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-rw-r--r--Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor31
-rw-r--r--Documentation/devicetree/bindings/memory-controllers/arm,pl353-smc.yaml131
-rw-r--r--Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt47
-rw-r--r--Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml53
-rw-r--r--Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt186
-rw-r--r--Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml242
-rw-r--r--Documentation/devicetree/bindings/mtd/common.txt16
-rw-r--r--Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml6
-rw-r--r--Documentation/devicetree/bindings/mtd/microchip,mchp48l640.yaml45
-rw-r--r--Documentation/devicetree/bindings/mtd/mtd.yaml89
-rw-r--r--Documentation/devicetree/bindings/mtd/nand-controller.yaml18
-rw-r--r--Documentation/devicetree/bindings/mtd/partitions/brcm,trx.txt5
-rw-r--r--Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt51
-rw-r--r--Documentation/devicetree/bindings/mtd/ti,am654-hbmc.yaml69
-rw-r--r--MAINTAINERS17
-rw-r--r--drivers/memory/pl353-smc.c314
-rw-r--r--drivers/mtd/chips/chipreg.c5
-rw-r--r--drivers/mtd/devices/Kconfig6
-rw-r--r--drivers/mtd/devices/Makefile1
-rw-r--r--drivers/mtd/devices/mchp48l640.c373
-rw-r--r--drivers/mtd/devices/ms02-nv.c1
-rw-r--r--drivers/mtd/devices/phram.c1
-rw-r--r--drivers/mtd/inftlmount.c17
-rw-r--r--drivers/mtd/maps/amd76xrom.c6
-rw-r--r--drivers/mtd/maps/ck804xrom.c8
-rw-r--r--drivers/mtd/maps/esb2rom.c7
-rw-r--r--drivers/mtd/maps/ichxrom.c6
-rw-r--r--drivers/mtd/maps/plat-ram.c1
-rw-r--r--drivers/mtd/maps/sun_uflash.c4
-rw-r--r--drivers/mtd/mtdcore.c246
-rw-r--r--drivers/mtd/mtdoops.c4
-rw-r--r--drivers/mtd/mtdpart.c9
-rw-r--r--drivers/mtd/nand/bbt.c2
-rw-r--r--drivers/mtd/nand/raw/Kconfig8
-rw-r--r--drivers/mtd/nand/raw/Makefile1
-rw-r--r--drivers/mtd/nand/raw/arasan-nand-controller.c341
-rw-r--r--drivers/mtd/nand/raw/atmel/nand-controller.c11
-rw-r--r--drivers/mtd/nand/raw/cadence-nand-controller.c6
-rw-r--r--drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h2
-rw-r--r--drivers/mtd/nand/raw/hisi504_nand.c4
-rw-r--r--drivers/mtd/nand/raw/internals.h5
-rw-r--r--drivers/mtd/nand/raw/marvell_nand.c6
-rw-r--r--drivers/mtd/nand/raw/mtk_ecc.c4
-rw-r--r--drivers/mtd/nand/raw/nand_base.c364
-rw-r--r--drivers/mtd/nand/raw/nand_legacy.c2
-rw-r--r--drivers/mtd/nand/raw/nand_onfi.c5
-rw-r--r--drivers/mtd/nand/raw/nand_timings.c370
-rw-r--r--drivers/mtd/nand/raw/omap2.c229
-rw-r--r--drivers/mtd/nand/raw/omap_elm.c2
-rw-r--r--drivers/mtd/nand/raw/pl35x-nand-controller.c1194
-rw-r--r--drivers/mtd/nand/raw/qcom_nandc.c23
-rw-r--r--drivers/mtd/nand/raw/r852.c7
-rw-r--r--drivers/mtd/nand/raw/sunxi_nand.c4
-rw-r--r--drivers/mtd/nand/spi/core.c129
-rw-r--r--drivers/mtd/nand/spi/macronix.c112
-rw-r--r--drivers/mtd/nftlcore.c1
-rw-r--r--drivers/mtd/nftlmount.c7
-rw-r--r--drivers/mtd/parsers/Kconfig2
-rw-r--r--drivers/mtd/parsers/parser_trx.c9
-rw-r--r--drivers/mtd/parsers/qcomsmempart.c10
-rw-r--r--drivers/mtd/parsers/redboot.c76
-rw-r--r--drivers/mtd/rfd_ftl.c5
-rw-r--r--drivers/mtd/sm_ftl.c51
-rw-r--r--drivers/mtd/spi-nor/Makefile2
-rw-r--r--drivers/mtd/spi-nor/controllers/intel-spi-pci.c1
-rw-r--r--drivers/mtd/spi-nor/controllers/nxp-spifi.c2
-rw-r--r--drivers/mtd/spi-nor/core.c22
-rw-r--r--drivers/mtd/spi-nor/core.h16
-rw-r--r--drivers/mtd/spi-nor/macronix.c5
-rw-r--r--drivers/mtd/spi-nor/otp.c160
-rw-r--r--drivers/mtd/spi-nor/sfdp.c58
-rw-r--r--drivers/mtd/spi-nor/sysfs.c93
-rw-r--r--drivers/mtd/spi-nor/winbond.c1
-rw-r--r--drivers/mtd/tests/oobtest.c7
-rw-r--r--drivers/mtd/tests/torturetest.c2
-rw-r--r--drivers/nvmem/core.c4
-rw-r--r--include/linux/mtd/mtd.h2
-rw-r--r--include/linux/mtd/onfi.h41
-rw-r--r--include/linux/mtd/rawnand.h161
-rw-r--r--include/linux/mtd/spi-nor.h2
-rw-r--r--include/linux/nvmem-provider.h2
-rw-r--r--include/linux/pl353-smc.h30
82 files changed, 4458 insertions, 1160 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor b/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor
new file mode 100644
index 000000000000..d76cd3946434
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-spi-devices-spi-nor
@@ -0,0 +1,31 @@
+What: /sys/bus/spi/devices/.../spi-nor/jedec_id
+Date: April 2021
+KernelVersion: 5.14
+Contact: linux-mtd@lists.infradead.org
+Description: (RO) The JEDEC ID of the SPI NOR flash as reported by the
+ flash device.
+
+
+What: /sys/bus/spi/devices/.../spi-nor/manufacturer
+Date: April 2021
+KernelVersion: 5.14
+Contact: linux-mtd@lists.infradead.org
+Description: (RO) Manufacturer of the SPI NOR flash.
+
+
+What: /sys/bus/spi/devices/.../spi-nor/partname
+Date: April 2021
+KernelVersion: 5.14
+Contact: linux-mtd@lists.infradead.org
+Description: (RO) Part name of the SPI NOR flash.
+
+
+What: /sys/bus/spi/devices/.../spi-nor/sfdp
+Date: April 2021
+KernelVersion: 5.14
+Contact: linux-mtd@lists.infradead.org
+Description: (RO) This attribute is only present if the SPI NOR flash
+ device supports the "Read SFDP" command (5Ah).
+
+ If present, it contains the complete SFDP (serial flash
+ discoverable parameters) binary data of the flash.
diff --git a/Documentation/devicetree/bindings/memory-controllers/arm,pl353-smc.yaml b/Documentation/devicetree/bindings/memory-controllers/arm,pl353-smc.yaml
new file mode 100644
index 000000000000..7a63c85ef8c5
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/arm,pl353-smc.yaml
@@ -0,0 +1,131 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/arm,pl353-smc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ARM PL353 Static Memory Controller (SMC) device-tree bindings
+
+maintainers:
+ - Miquel Raynal <miquel.raynal@bootlin.com>
+ - Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
+
+description:
+ The PL353 Static Memory Controller is a bus where you can connect two kinds
+ of memory interfaces, which are NAND and memory mapped interfaces (such as
+ SRAM or NOR).
+
+# We need a select here so we don't match all nodes with 'arm,primecell'
+select:
+ properties:
+ compatible:
+ contains:
+ const: arm,pl353-smc-r2p1
+ required:
+ - compatible
+
+properties:
+ $nodename:
+ pattern: "^memory-controller@[0-9a-f]+$"
+
+ compatible:
+ items:
+ - const: arm,pl353-smc-r2p1
+ - const: arm,primecell
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 1
+
+ reg:
+ items:
+ - description:
+ Configuration registers for the host and sub-controllers.
+ The three chip select regions are defined in 'ranges'.
+
+ clocks:
+ items:
+ - description: clock for the memory device bus
+ - description: main clock of the SMC
+
+ clock-names:
+ items:
+ - const: memclk
+ - const: apb_pclk
+
+ ranges:
+ minItems: 1
+ maxItems: 3
+ description: |
+ Memory bus areas for interacting with the devices. Reflects
+ the memory layout with four integer values following:
+ <cs-number> 0 <offset> <size>
+ items:
+ - description: NAND bank 0
+ - description: NOR/SRAM bank 0
+ - description: NOR/SRAM bank 1
+
+ interrupts: true
+
+patternProperties:
+ "@[0-3],[a-f0-9]+$":
+ type: object
+ description: |
+ The child device node represents the controller connected to the SMC
+ bus. The controller can be a NAND controller or a pair of any memory
+ mapped controllers such as NOR and SRAM controllers.
+
+ properties:
+ compatible:
+ description:
+ Compatible of memory controller.
+
+ reg:
+ items:
+ - items:
+ - description: |
+ Chip-select ID, as in the parent range property.
+ minimum: 0
+ maximum: 2
+ - description: |
+ Offset of the memory region requested by the device.
+ - description: |
+ Length of the memory region requested by the device.
+
+ required:
+ - compatible
+ - reg
+
+required:
+ - compatible
+ - reg
+ - clock-names
+ - clocks
+ - "#address-cells"
+ - "#size-cells"
+ - ranges
+
+additionalProperties: false
+
+examples:
+ - |
+ smcc: memory-controller@e000e000 {
+ compatible = "arm,pl353-smc-r2p1", "arm,primecell";
+ reg = <0xe000e000 0x0001000>;
+ clock-names = "memclk", "apb_pclk";
+ clocks = <&clkc 11>, <&clkc 44>;
+ ranges = <0x0 0x0 0xe1000000 0x1000000 /* Nand CS region */
+ 0x1 0x0 0xe2000000 0x2000000 /* SRAM/NOR CS0 region */
+ 0x2 0x0 0xe4000000 0x2000000>; /* SRAM/NOR CS1 region */
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ nfc0: nand-controller@0,0 {
+ compatible = "arm,pl353-nand-r2p1";
+ reg = <0 0 0x1000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt b/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt
deleted file mode 100644
index d56615fd343a..000000000000
--- a/Documentation/devicetree/bindings/memory-controllers/pl353-smc.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-Device tree bindings for ARM PL353 static memory controller
-
-PL353 static memory controller supports two kinds of memory
-interfaces.i.e NAND and SRAM/NOR interfaces.
-The actual devices are instantiated from the child nodes of pl353 smc node.
-
-Required properties:
-- compatible : Should be "arm,pl353-smc-r2p1", "arm,primecell".
-- reg : Controller registers map and length.
-- clock-names : List of input clock names - "memclk", "apb_pclk"
- (See clock bindings for details).
-- clocks : Clock phandles (see clock bindings for details).
-- address-cells : Must be 2.
-- size-cells : Must be 1.
-
-Child nodes:
- For NAND the "arm,pl353-nand-r2p1" and for NOR the "cfi-flash" drivers are
-supported as child nodes.
-
-for NAND partition information please refer the below file
-Documentation/devicetree/bindings/mtd/partition.txt
-
-Example:
- smcc: memory-controller@e000e000
- compatible = "arm,pl353-smc-r2p1", "arm,primecell";
- clock-names = "memclk", "apb_pclk";
- clocks = <&clkc 11>, <&clkc 44>;
- reg = <0xe000e000 0x1000>;
- #address-cells = <2>;
- #size-cells = <1>;
- ranges = <0x0 0x0 0xe1000000 0x1000000 //Nand CS Region
- 0x1 0x0 0xe2000000 0x2000000 //SRAM/NOR CS Region
- 0x2 0x0 0xe4000000 0x2000000>; //SRAM/NOR CS Region
- nand_0: flash@e1000000 {
- compatible = "arm,pl353-nand-r2p1"
- reg = <0 0 0x1000000>;
- (...)
- };
- nor0: flash@e2000000 {
- compatible = "cfi-flash";
- reg = <1 0 0x2000000>;
- };
- nor1: flash@e4000000 {
- compatible = "cfi-flash";
- reg = <2 0 0x2000000>;
- };
- };
diff --git a/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
new file mode 100644
index 000000000000..5f126bb9b202
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/arm,pl353-nand-r2p1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PL353 NAND Controller device tree bindings
+
+allOf:
+ - $ref: "nand-controller.yaml"
+
+maintainers:
+ - Miquel Raynal <miquel.raynal@bootlin.com>
+ - Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>
+
+properties:
+ compatible:
+ items:
+ - const: arm,pl353-nand-r2p1
+
+ reg:
+ items:
+ - items:
+ - description: CS with regard to the parent ranges property
+ - description: Offset of the memory region requested by the device
+ - description: Length of the memory region requested by the device
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ smcc: memory-controller@e000e000 {
+ compatible = "arm,pl353-smc-r2p1", "arm,primecell";
+ reg = <0xe000e000 0x0001000>;
+ clock-names = "memclk", "apb_pclk";
+ clocks = <&clkc 11>, <&clkc 44>;
+ ranges = <0x0 0x0 0xe1000000 0x1000000 /* Nand CS region */
+ 0x1 0x0 0xe2000000 0x2000000 /* SRAM/NOR CS0 region */
+ 0x2 0x0 0xe4000000 0x2000000>; /* SRAM/NOR CS1 region */
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ nfc0: nand-controller@0,0 {
+ compatible = "arm,pl353-nand-r2p1";
+ reg = <0 0 0x1000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
deleted file mode 100644
index 44335a4f8bfb..000000000000
--- a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.txt
+++ /dev/null
@@ -1,186 +0,0 @@
-* Broadcom STB NAND Controller
-
-The Broadcom Set-Top Box NAND controller supports low-level access to raw NAND
-flash chips. It has a memory-mapped register interface for both control
-registers and for its data input/output buffer. On some SoCs, this controller is
-paired with a custom DMA engine (inventively named "Flash DMA") which supports
-basic PROGRAM and READ functions, among other features.
-
-This controller was originally designed for STB SoCs (BCM7xxx) but is now
-available on a variety of Broadcom SoCs, including some BCM3xxx, BCM63xx, and
-iProc/Cygnus. Its history includes several similar (but not fully register
-compatible) versions.
-
-Required properties:
-- compatible : May contain an SoC-specific compatibility string (see below)
- to account for any SoC-specific hardware bits that may be
- added on top of the base core controller.
- In addition, must contain compatibility information about
- the core NAND controller, of the following form:
- "brcm,brcmnand" and an appropriate version compatibility
- string, like "brcm,brcmnand-v7.0"
- Possible values:
- brcm,brcmnand-v2.1
- brcm,brcmnand-v2.2
- brcm,brcmnand-v4.0
- brcm,brcmnand-v5.0
- brcm,brcmnand-v6.0
- brcm,brcmnand-v6.1
- brcm,brcmnand-v6.2
- brcm,brcmnand-v7.0
- brcm,brcmnand-v7.1
- brcm,brcmnand-v7.2
- brcm,brcmnand-v7.3
- brcm,brcmnand
-- reg : the register start and length for NAND register region.
- (optional) Flash DMA register range (if present)
- (optional) NAND flash cache range (if at non-standard offset)
-- reg-names : a list of the names corresponding to the previous register
- ranges. Should contain "nand" and (optionally)
- "flash-dma" or "flash-edu" and/or "nand-cache".
-- interrupts : The NAND CTLRDY interrupt, (if Flash DMA is available)
- FLASH_DMA_DONE and if EDU is avaialble and used FLASH_EDU_DONE
-- interrupt-names : May be "nand_ctlrdy" or "flash_dma_done" or "flash_edu_done",
- if broken out as individual interrupts.
- May be "nand", if the SoC has the individual NAND
- interrupts multiplexed behind another custom piece of
- hardware
-- #address-cells : <1> - subnodes give the chip-select number
-- #size-cells : <0>
-
-Optional properties:
-- clock : reference to the clock for the NAND controller
-- clock-names : "nand" (required for the above clock)
-- brcm,nand-has-wp : Some versions of this IP include a write-protect
- (WP) control bit. It is always available on >=
- v7.0. Use this property to describe the rare
- earlier versions of this core that include WP
-
- -- Additional SoC-specific NAND controller properties --
-
-The NAND controller is integrated differently on the variety of SoCs on which it
-is found. Part of this integration involves providing status and enable bits
-with which to control the 8 exposed NAND interrupts, as well as hardware for
-configuring the endianness of the data bus. On some SoCs, these features are
-handled via standard, modular components (e.g., their interrupts look like a
-normal IRQ chip), but on others, they are controlled in unique and interesting
-ways, sometimes with registers that lump multiple NAND-related functions
-together. The former case can be described simply by the standard interrupts
-properties in the main controller node. But for the latter exceptional cases,
-we define additional 'compatible' properties and associated register resources within the NAND controller node above.
-
- - compatible: Can be one of several SoC-specific strings. Each SoC may have
- different requirements for its additional properties, as described below each
- bullet point below.
-
- * "brcm,nand-bcm63138"
- - reg: (required) the 'NAND_INT_BASE' register range, with separate status
- and enable registers
- - reg-names: (required) "nand-int-base"
-
- * "brcm,nand-bcm6368"
- - compatible: should contain "brcm,nand-bcm<soc>", "brcm,nand-bcm6368"
- - reg: (required) the 'NAND_INTR_BASE' register range, with combined status
- and enable registers, and boot address registers
- - reg-names: (required) "nand-int-base"
-
- * "brcm,nand-iproc"
- - reg: (required) the "IDM" register range, for interrupt enable and APB
- bus access endianness configuration, and the "EXT" register range,
- for interrupt status/ack.
- - reg-names: (required) a list of the names corresponding to the previous
- register ranges. Should contain "iproc-idm" and "iproc-ext".
-
-
-* NAND chip-select
-
-Each controller (compatible: "brcm,brcmnand") may contain one or more subnodes
-to represent enabled chip-selects which (may) contain NAND flash chips. Their
-properties are as follows.
-
-Required properties:
-- compatible : should contain "brcm,nandcs"
-- reg : a single integer representing the chip-select
- number (e.g., 0, 1, 2, etc.)
-- #address-cells : see partition.txt
-- #size-cells : see partition.txt
-
-Optional properties:
-- nand-ecc-strength : see nand-controller.yaml
-- nand-ecc-step-size : must be 512 or 1024. See nand-controller.yaml
-- nand-on-flash-bbt : boolean, to enable the on-flash BBT for this
- chip-select. See nand-controller.yaml
-- brcm,nand-oob-sector-size : integer, to denote the spare area sector size
- expected for the ECC layout in use. This size, in
- addition to the strength and step-size,
- determines how the hardware BCH engine will lay
- out the parity bytes it stores on the flash.
- This property can be automatically determined by
- the flash geometry (particularly the NAND page
- and OOB size) in many cases, but when booting
- from NAND, the boot controller has only a limited
- number of available options for its default ECC
- layout.
-
-Each nandcs device node may optionally contain sub-nodes describing the flash
-partition mapping. See partition.txt for more detail.
-
-
-Example:
-
-nand@f0442800 {
- compatible = "brcm,brcmnand-v7.0", "brcm,brcmnand";
- reg = <0xF0442800 0x600>,
- <0xF0443000 0x100>;
- reg-names = "nand", "flash-dma";
- interrupt-parent = <&hif_intr2_intc>;
- interrupts = <24>, <4>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- nandcs@1 {
- compatible = "brcm,nandcs";
- reg = <1>; // Chip select 1
- nand-on-flash-bbt;
- nand-ecc-strength = <12>;
- nand-ecc-step-size = <512>;
-
- // Partitions
- #address-cells = <1>; // <2>, for 64-bit offset
- #size-cells = <1>; // <2>, for 64-bit length
- flash0.rootfs@0 {
- reg = <0 0x10000000>;
- };
- flash0@0 {
- reg = <0 0>; // MTDPART_SIZ_FULL
- };
- flash0.kernel@10000000 {
- reg = <0x10000000 0x400000>;
- };
- };
-};
-
-nand@10000200 {
- compatible = "brcm,nand-bcm63168", "brcm,nand-bcm6368",
- "brcm,brcmnand-v4.0", "brcm,brcmnand";
- reg = <0x10000200 0x180>,
- <0x10000600 0x200>,
- <0x100000b0 0x10>;
- reg-names = "nand", "nand-cache", "nand-int-base";
- interrupt-parent = <&periph_intc>;
- interrupts = <50>;
- clocks = <&periph_clk 20>;
- clock-names = "nand";
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- nand0: nandcs@0 {
- compatible = "brcm,nandcs";
- reg = <0>;
- nand-on-flash-bbt;
- nand-ecc-strength = <1>;
- nand-ecc-step-size = <512>;
- };
-};
diff --git a/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
new file mode 100644
index 000000000000..e5f1a33332a5
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
@@ -0,0 +1,242 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/brcm,brcmnand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom STB NAND Controller
+
+maintainers:
+ - Brian Norris <computersforpeace@gmail.com>
+ - Kamal Dasu <kdasu.kdev@gmail.com>
+
+description: |
+ The Broadcom Set-Top Box NAND controller supports low-level access to raw NAND
+ flash chips. It has a memory-mapped register interface for both control
+ registers and for its data input/output buffer. On some SoCs, this controller
+ is paired with a custom DMA engine (inventively named "Flash DMA") which
+ supports basic PROGRAM and READ functions, among other features.
+
+ This controller was originally designed for STB SoCs (BCM7xxx) but is now
+ available on a variety of Broadcom SoCs, including some BCM3xxx, BCM63xx, and
+ iProc/Cygnus. Its history includes several similar (but not fully register
+ compatible) versions.
+
+ -- Additional SoC-specific NAND controller properties --
+
+ The NAND controller is integrated differently on the variety of SoCs on which
+ it is found. Part of this integration involves providing status and enable
+ bits with which to control the 8 exposed NAND interrupts, as well as hardware
+ for configuring the endianness of the data bus. On some SoCs, these features
+ are handled via standard, modular components (e.g., their interrupts look like
+ a normal IRQ chip), but on others, they are controlled in unique and
+ interesting ways, sometimes with registers that lump multiple NAND-related
+ functions together. The former case can be described simply by the standard
+ interrupts properties in the main controller node. But for the latter
+ exceptional cases, we define additional 'compatible' properties and associated
+ register resources within the NAND controller node above.
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - brcm,brcmnand-v2.1
+ - brcm,brcmnand-v2.2
+ - brcm,brcmnand-v4.0
+ - brcm,brcmnand-v5.0
+ - brcm,brcmnand-v6.0
+ - brcm,brcmnand-v6.1
+ - brcm,brcmnand-v6.2
+ - brcm,brcmnand-v7.0
+ - brcm,brcmnand-v7.1
+ - brcm,brcmnand-v7.2
+ - brcm,brcmnand-v7.3
+ - const: brcm,brcmnand
+ - description: BCM63138 SoC-specific NAND controller
+ items:
+ - const: brcm,nand-bcm63138
+ - enum:
+ - brcm,brcmnand-v7.0
+ - brcm,brcmnand-v7.1
+ - const: brcm,brcmnand
+ - description: iProc SoC-specific NAND controller
+ items:
+ - const: brcm,nand-iproc
+ - const: brcm,brcmnand-v6.1
+ - const: brcm,brcmnand
+ - description: BCM63168 SoC-specific NAND controller
+ items:
+ - const: brcm,nand-bcm63168
+ - const: brcm,nand-bcm6368
+ - const: brcm,brcmnand-v4.0
+ - const: brcm,brcmnand
+
+ reg:
+ minItems: 1
+ maxItems: 6
+
+ reg-names:
+ minItems: 1
+ maxItems: 6
+ items:
+ enum: [ nand, flash-dma, flash-edu, nand-cache, nand-int-base, iproc-idm, iproc-ext ]
+
+ interrupts:
+ minItems: 1
+ maxItems: 3
+ items:
+ - description: NAND CTLRDY interrupt
+ - description: FLASH_DMA_DONE if flash DMA is available
+ - description: FLASH_EDU_DONE if EDU is available
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 3
+ items:
+ - const: nand_ctlrdy
+ - const: flash_dma_done
+ - const: flash_edu_done
+
+ clocks:
+ maxItems: 1
+ description: reference to the clock for the NAND controller
+
+ clock-names:
+ const: nand
+
+ brcm,nand-has-wp:
+ description: >
+ Some versions of this IP include a write-protect
+ (WP) control bit. It is always available on >=
+ v7.0. Use this property to describe the rare
+ earlier versions of this core that include WP
+ type: boolean
+
+patternProperties:
+ "^nand@[a-f0-9]$":
+ type: object
+ properties:
+ compatible:
+ const: brcm,nandcs
+
+ nand-ecc-step-size:
+ enum: [ 512, 1024 ]
+
+ brcm,nand-oob-sector-size:
+ description: |
+ integer, to denote the spare area sector size
+ expected for the ECC layout in use. This size, in
+ addition to the strength and step-size,
+ determines how the hardware BCH engine will lay
+ out the parity bytes it stores on the flash.
+ This property can be automatically determined by
+ the flash geometry (particularly the NAND page
+ and OOB size) in many cases, but when booting
+ from NAND, the boot controller has only a limited
+ number of available options for its default ECC
+ layout.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+allOf:
+ - $ref: nand-controller.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,nand-bcm63138
+ then:
+ properties:
+ reg-names:
+ minItems: 2
+ maxItems: 2
+ items:
+ - const: nand
+ - const: nand-int-base
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,nand-bcm6368
+ then:
+ properties:
+ reg-names:
+ minItems: 3
+ maxItems: 3
+ items:
+ - const: nand
+ - const: nand-int-base
+ - const: nand-cache
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,nand-iproc
+ then:
+ properties:
+ reg-names:
+ minItems: 3
+ maxItems: 3
+ items:
+ - const: nand
+ - const: iproc-idm
+ - const: iproc-ext
+
+unevaluatedProperties: false
+
+required:
+ - reg
+ - reg-names
+ - interrupts
+
+examples:
+ - |
+ nand-controller@f0442800 {
+ compatible = "brcm,brcmnand-v7.0", "brcm,brcmnand";
+ reg = <0xf0442800 0x600>,
+ <0xf0443000 0x100>;
+ reg-names = "nand", "flash-dma";
+ interrupt-parent = <&hif_intr2_intc>;
+ interrupts = <24>, <4>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nand@1 {
+ compatible = "brcm,nandcs";
+ reg = <1>; // Chip select 1
+ nand-on-flash-bbt;
+ nand-ecc-strength = <12>;
+ nand-ecc-step-size = <512>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
+ - |
+ nand-controller@10000200 {
+ compatible = "brcm,nand-bcm63168", "brcm,nand-bcm6368",
+ "brcm,brcmnand-v4.0", "brcm,brcmnand";
+ reg = <0x10000200 0x180>,
+ <0x100000b0 0x10>,
+ <0x10000600 0x200>;
+ reg-names = "nand", "nand-int-base", "nand-cache";
+ interrupt-parent = <&periph_intc>;
+ interrupts = <50>;
+ clocks = <&periph_clk 20>;
+ clock-names = "nand";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nand@0 {
+ compatible = "brcm,nandcs";
+ reg = <0>;
+ nand-on-flash-bbt;
+ nand-ecc-strength = <1>;
+ nand-ecc-step-size = <512>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/mtd/common.txt b/Documentation/devicetree/bindings/mtd/common.txt
index fc068b923d7a..ae16f9ea8606 100644
--- a/Documentation/devicetree/bindings/mtd/common.txt
+++ b/Documentation/devicetree/bindings/mtd/common.txt
@@ -1,15 +1 @@
-* Common properties of all MTD devices
-
-Optional properties:
-- label: user-defined MTD device name. Can be used to assign user
- friendly names to MTD devices (instead of the flash model or flash
- controller based name) in order to ease flash device identification
- and/or describe what they are used for.
-
-Example:
-
- flash@0 {
- label = "System-firmware";
-
- /* flash type specific properties */
- };
+This file has been moved to mtd.yaml.
diff --git a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
index 5e7e5349f9a1..ed590d7c6e37 100644
--- a/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
+++ b/Documentation/devicetree/bindings/mtd/jedec,spi-nor.yaml
@@ -9,6 +9,9 @@ title: SPI NOR flash ST M25Pxx (and similar) serial flash chips
maintainers:
- Rob Herring <robh@kernel.org>
+allOf:
+ - $ref: "mtd.yaml#"
+
properties:
compatible:
oneOf:
@@ -82,6 +85,9 @@ patternProperties:
'^partition@':
type: object
+ "^otp(-[0-9]+)?$":
+ type: object
+
additionalProperties: false
examples:
diff --git a/Documentation/devicetree/bindings/mtd/microchip,mchp48l640.yaml b/Documentation/devicetree/bindings/mtd/microchip,mchp48l640.yaml
new file mode 100644
index 000000000000..2cdf6bf3dc4a
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/microchip,mchp48l640.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/mtd/microchip,mchp48l640.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Microchip 48l640 (and similar) serial EERAM bindings
+
+maintainers:
+ - Heiko Schocher <hs@denx.de>
+
+description: |
+ The Microchip 48l640 is a 8KByte EERAM connected via SPI.
+
+ datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/20006055B.pdf
+
+properties:
+ compatible:
+ items:
+ - const: microchip,48l640
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency: true
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ eeram@0 {
+ compatible = "microchip,48l640";
+ reg = <0>;
+ spi-max-frequency = <20000000>;
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml b/Documentation/devicetree/bindings/mtd/mtd.yaml
new file mode 100644
index 000000000000..376b679cfc70
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/mtd.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/mtd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MTD (Memory Technology Device) Device Tree Bindings
+
+maintainers:
+ - Miquel Raynal <miquel.raynal@bootlin.com>
+ - Richard Weinberger <richard@nod.at>
+
+properties:
+ $nodename:
+ pattern: "^flash(@.*)?$"
+
+ label:
+ description:
+ User-defined MTD device name. Can be used to assign user friendly
+ names to MTD devices (instead of the flash model or flash controller
+ based name) in order to ease flash device identification and/or
+ describe what they are used for.
+
+patternProperties:
+ "^otp(-[0-9]+)?$":
+ type: object
+ $ref: ../nvmem/nvmem.yaml#
+
+ description: |
+ An OTP memory region. Some flashes provide a one-time-programmable
+ memory whose content can either be programmed by a user or is already
+ pre-programmed by the factory. Some flashes might provide both.
+
+ properties:
+ compatible:
+ enum:
+ - user-otp
+ - factory-otp
+
+ required:
+ - compatible
+
+additionalProperties: true
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ reg = <0>;
+ compatible = "jedec,spi-nor";
+ label = "System-firmware";
+ };
+ };
+
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ reg = <0>;
+ compatible = "jedec,spi-nor";
+
+ otp-1 {
+ compatible = "factory-otp";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ electronic-serial-number@0 {
+ reg = <0 8>;
+ };
+ };
+
+ otp-2 {
+ compatible = "user-otp";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ mac-address@0 {
+ reg = <0 6>;
+ };
+ };
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
index 678b39952502..bd217e6f5018 100644
--- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
+++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
@@ -38,6 +38,17 @@ properties:
ranges: true
+ cs-gpios:
+ minItems: 1
+ maxItems: 8
+ description:
+ Array of chip-select available to the controller. The first
+ entries are a 1:1 mapping of the available chip-select on the
+ NAND controller (even if they are not used). As many additional
+ chip-select as needed may follow and should be phandles of GPIO
+ lines. 'reg' entries of the NAND chip subnodes become indexes of
+ this array when this property is present.
+
patternProperties:
"^nand@[a-f0-9]$":
type: object
@@ -164,14 +175,19 @@ examples:
nand-controller {
#address-cells = <1>;
#size-cells = <0>;
+ cs-gpios = <0>, <&gpioA 1>; /* A single native CS is available */
/* controller specific properties */
nand@0 {
- reg = <0>;
+ reg = <0>; /* Native CS */
nand-use-soft-ecc-engine;
nand-ecc-algo = "bch";
/* controller specific properties */
};
+
+ nand@1 {
+ reg = <1>; /* GPIO CS */
+ };
};
diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,trx.txt b/Documentation/devicetree/bindings/mtd/partitions/brcm,trx.txt
index b677147ca4e1..c2175d3c82ec 100644
--- a/Documentation/devicetree/bindings/mtd/partitions/brcm,trx.txt
+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,trx.txt
@@ -28,6 +28,11 @@ detected by a software parsing TRX header.
Required properties:
- compatible : (required) must be "brcm,trx"
+Optional properties:
+
+- brcm,trx-magic: TRX magic, if it is different from the default magic
+ 0x30524448 as a u32.
+
Example:
flash@0 {
diff --git a/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
deleted file mode 100644
index ccfd37b8a0ad..000000000000
--- a/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.txt
+++ /dev/null
@@ -1,51 +0,0 @@
-Bindings for HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs
-
-Required properties:
-- compatible : "ti,am654-hbmc" for AM654 SoC
-- reg : Two entries:
- First entry pointed to the register space of HBMC controller
- Second entry pointing to the memory map region dedicated for
- MMIO access to attached flash devices
-- ranges : Address translation from offset within CS to allocated MMIO
- space in SoC
-
-Optional properties:
-- mux-controls : phandle to the multiplexer that controls selection of
- HBMC vs OSPI inside Flash SubSystem (FSS). Default is OSPI,
- if property is absent.
- See Documentation/devicetree/bindings/mux/reg-mux.yaml
- for mmio-mux binding details
-
-Example:
-
- system-controller@47000000 {
- compatible = "syscon", "simple-mfd";
- reg = <0x0 0x47000000 0x0 0x100>;
- #address-cells = <2>;
- #size-cells = <2>;
- ranges;
-
- hbmc_mux: multiplexer {
- compatible = "mmio-mux";
- #mux-control-cells = <1>;
- mux-reg-masks = <0x4 0x2>; /* 0: reg 0x4, bit 1 */
- };
- };
-
- hbmc: hyperbus@47034000 {
- compatible = "ti,am654-hbmc";
- reg = <0x0 0x47034000 0x0 0x100>,
- <0x5 0x00000000 0x1 0x0000000>;
- power-domains = <&k3_pds 55>;
- #address-cells = <2>;
- #size-cells = <1>;
- ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */
- <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */
- mux-controls = <&hbmc_mux 0>;
-
- /* Slave flash node */
- flash@0,0 {
- compatible = "cypress,hyperflash", "cfi-flash";
- reg = <0x0 0x0 0x4000000>;
- };
- };
diff --git a/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.yaml b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.yaml
new file mode 100644
index 000000000000..30b458c41cac
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/ti,am654-hbmc.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/ti,am654-hbmc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HyperBus Memory Controller (HBMC) on TI's K3 family of SoCs
+
+maintainers:
+ - Vignesh Raghavendra <vigneshr@ti.com>
+
+properties:
+ compatible:
+ const: ti,am654-hbmc
+
+ reg:
+ maxItems: 2
+
+ power-domains: true
+ '#address-cells': true
+ '#size-cells': true
+ ranges: true
+
+ mux-controls:
+ description: MMIO mux controller node to select b/w OSPI and HBMC.
+
+ clocks:
+ maxItems: 1
+
+patternProperties:
+ "^flash@[0-1],[0-9a-f]+$":
+ type: object
+
+required:
+ - compatible
+ - reg
+ - ranges
+ - clocks
+ - '#address-cells'
+ - '#size-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ hbmc: memory-controller@47034000 {
+ compatible = "ti,am654-hbmc";
+ reg = <0x0 0x47034000 0x0 0x100>,
+ <0x5 0x00000000 0x1 0x0000000>;
+ ranges = <0x0 0x0 0x5 0x00000000 0x4000000>, /* CS0 - 64MB */
+ <0x1 0x0 0x5 0x04000000 0x4000000>; /* CS1 - 64MB */
+ clocks = <&k3_clks 102 0>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ power-domains = <&k3_pds 55>;
+ mux-controls = <&hbmc_mux 0>;
+
+ flash@0,0 {
+ compatible = "cypress,hyperflash", "cfi-flash";
+ reg = <0x0 0x0 0x4000000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 3ccd3b0d7832..7b9c0197b2a7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1319,6 +1319,7 @@ W: http://www.aquantia.com
F: drivers/net/ethernet/aquantia/atlantic/aq_ptp*
ARASAN NAND CONTROLLER DRIVER
+M: Miquel Raynal <miquel.raynal@bootlin.com>
M: Naga Sureshkumar Relli <nagasure@xilinx.com>
L: linux-mtd@lists.infradead.org
S: Maintained
@@ -1460,6 +1461,22 @@ S: Odd Fixes
F: drivers/amba/
F: include/linux/amba/bus.h
+ARM PRIMECELL PL35X NAND CONTROLLER DRIVER
+M: Miquel Raynal <miquel.raynal@bootlin.com@bootlin.com>
+M: Naga Sureshkumar Relli <nagasure@xilinx.com>
+L: linux-mtd@lists.infradead.org
+S: Maintained
+F: Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
+F: drivers/mtd/nand/raw/pl35x-nand-controller.c
+
+ARM PRIMECELL PL35X SMC DRIVER
+M: Miquel Raynal <miquel.raynal@bootlin.com@bootlin.com>
+M: Naga Sureshkumar Relli <nagasure@xilinx.com>
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S: Maintained
+F: Documentation/devicetree/bindings/mtd/arm,pl353-smc.yaml
+F: drivers/memory/pl353-smc.c
+
ARM PRIMECELL CLCD PL110 DRIVER
M: Russell King <linux@armlinux.org.uk>
S: Odd Fixes
diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c
index 9c0a28416777..925d856663ac 100644
--- a/drivers/memory/pl353-smc.c
+++ b/drivers/memory/pl353-smc.c
@@ -8,263 +8,22 @@
*/
#include <linux/clk.h>
-#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/pl353-smc.h>
#include <linux/amba/bus.h>
-/* Register definitions */
-#define PL353_SMC_MEMC_STATUS_OFFS 0 /* Controller status reg, RO */
-#define PL353_SMC_CFG_CLR_OFFS 0xC /* Clear config reg, WO */
-#define PL353_SMC_DIRECT_CMD_OFFS 0x10 /* Direct command reg, WO */
-#define PL353_SMC_SET_CYCLES_OFFS 0x14 /* Set cycles register, WO */
-#define PL353_SMC_SET_OPMODE_OFFS 0x18 /* Set opmode register, WO */
-#define PL353_SMC_ECC_STATUS_OFFS 0x400 /* ECC status register */
-#define PL353_SMC_ECC_MEMCFG_OFFS 0x404 /* ECC mem config reg */
-#define PL353_SMC_ECC_MEMCMD1_OFFS 0x408 /* ECC mem cmd1 reg */
-#define PL353_SMC_ECC_MEMCMD2_OFFS 0x40C /* ECC mem cmd2 reg */
-#define PL353_SMC_ECC_VALUE0_OFFS 0x418 /* ECC value 0 reg */
-
-/* Controller status register specific constants */
-#define PL353_SMC_MEMC_STATUS_RAW_INT_1_SHIFT 6
-
-/* Clear configuration register specific constants */
-#define PL353_SMC_CFG_CLR_INT_CLR_1 0x10
-#define PL353_SMC_CFG_CLR_ECC_INT_DIS_1 0x40
-#define PL353_SMC_CFG_CLR_INT_DIS_1 0x2
-#define PL353_SMC_CFG_CLR_DEFAULT_MASK (PL353_SMC_CFG_CLR_INT_CLR_1 | \
- PL353_SMC_CFG_CLR_ECC_INT_DIS_1 | \
- PL353_SMC_CFG_CLR_INT_DIS_1)
-
-/* Set cycles register specific constants */
-#define PL353_SMC_SET_CYCLES_T0_MASK 0xF
-#define PL353_SMC_SET_CYCLES_T0_SHIFT 0
-#define PL353_SMC_SET_CYCLES_T1_MASK 0xF
-#define PL353_SMC_SET_CYCLES_T1_SHIFT 4
-#define PL353_SMC_SET_CYCLES_T2_MASK 0x7
-#define PL353_SMC_SET_CYCLES_T2_SHIFT 8
-#define PL353_SMC_SET_CYCLES_T3_MASK 0x7
-#define PL353_SMC_SET_CYCLES_T3_SHIFT 11
-#define PL353_SMC_SET_CYCLES_T4_MASK 0x7
-#define PL353_SMC_SET_CYCLES_T4_SHIFT 14
-#define PL353_SMC_SET_CYCLES_T5_MASK 0x7
-#define PL353_SMC_SET_CYCLES_T5_SHIFT 17
-#define PL353_SMC_SET_CYCLES_T6_MASK 0xF
-#define PL353_SMC_SET_CYCLES_T6_SHIFT 20
-
-/* ECC status register specific constants */
-#define PL353_SMC_ECC_STATUS_BUSY BIT(6)
-#define PL353_SMC_ECC_REG_SIZE_OFFS 4
-
-/* ECC memory config register specific constants */
-#define PL353_SMC_ECC_MEMCFG_MODE_MASK 0xC
-#define PL353_SMC_ECC_MEMCFG_MODE_SHIFT 2
-#define PL353_SMC_ECC_MEMCFG_PGSIZE_MASK 0x3
-
-#define PL353_SMC_DC_UPT_NAND_REGS ((4 << 23) | /* CS: NAND chip */ \
- (2 << 21)) /* UpdateRegs operation */
-
-#define PL353_NAND_ECC_CMD1 ((0x80) | /* Write command */ \
- (0 << 8) | /* Read command */ \
- (0x30 << 16) | /* Read End command */ \
- (1 << 24)) /* Read End command calid */
-
-#define PL353_NAND_ECC_CMD2 ((0x85) | /* Write col change cmd */ \
- (5 << 8) | /* Read col change cmd */ \
- (0xE0 << 16) | /* Read col change end cmd */ \
- (1 << 24)) /* Read col change end cmd valid */
-#define PL353_NAND_ECC_BUSY_TIMEOUT (1 * HZ)
/**
* struct pl353_smc_data - Private smc driver structure
* @memclk: Pointer to the peripheral clock
- * @aclk: Pointer to the APER clock
+ * @aclk: Pointer to the AXI peripheral clock
*/
struct pl353_smc_data {
struct clk *memclk;
struct clk *aclk;
};
-/* SMC virtual register base */
-static void __iomem *pl353_smc_base;
-
-/**
- * pl353_smc_set_buswidth - Set memory buswidth
- * @bw: Memory buswidth (8 | 16)
- * Return: 0 on success or negative errno.
- */
-int pl353_smc_set_buswidth(unsigned int bw)
-{
- if (bw != PL353_SMC_MEM_WIDTH_8 && bw != PL353_SMC_MEM_WIDTH_16)
- return -EINVAL;
-
- writel(bw, pl353_smc_base + PL353_SMC_SET_OPMODE_OFFS);
- writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
- PL353_SMC_DIRECT_CMD_OFFS);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(pl353_smc_set_buswidth);
-
-/**
- * pl353_smc_set_cycles - Set memory timing parameters
- * @timings: NAND controller timing parameters
- *
- * Sets NAND chip specific timing parameters.
- */
-void pl353_smc_set_cycles(u32 timings[])
-{
- /*
- * Set write pulse timing. This one is easy to extract:
- *
- * NWE_PULSE = tWP
- */
- timings[0] &= PL353_SMC_SET_CYCLES_T0_MASK;
- timings[1] = (timings[1] & PL353_SMC_SET_CYCLES_T1_MASK) <<
- PL353_SMC_SET_CYCLES_T1_SHIFT;
- timings[2] = (timings[2] & PL353_SMC_SET_CYCLES_T2_MASK) <<
- PL353_SMC_SET_CYCLES_T2_SHIFT;
- timings[3] = (timings[3] & PL353_SMC_SET_CYCLES_T3_MASK) <<
- PL353_SMC_SET_CYCLES_T3_SHIFT;
- timings[4] = (timings[4] & PL353_SMC_SET_CYCLES_T4_MASK) <<
- PL353_SMC_SET_CYCLES_T4_SHIFT;
- timings[5] = (timings[5] & PL353_SMC_SET_CYCLES_T5_MASK) <<
- PL353_SMC_SET_CYCLES_T5_SHIFT;
- timings[6] = (timings[6] & PL353_SMC_SET_CYCLES_T6_MASK) <<
- PL353_SMC_SET_CYCLES_T6_SHIFT;
- timings[0] |= timings[1] | timings[2] | timings[3] |
- timings[4] | timings[5] | timings[6];
-
- writel(timings[0], pl353_smc_base + PL353_SMC_SET_CYCLES_OFFS);
- writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
- PL353_SMC_DIRECT_CMD_OFFS);
-}
-EXPORT_SYMBOL_GPL(pl353_smc_set_cycles);
-
-/**
- * pl353_smc_ecc_is_busy - Read ecc busy flag
- * Return: the ecc_status bit from the ecc_status register. 1 = busy, 0 = idle
- */
-bool pl353_smc_ecc_is_busy(void)
-{
- return ((readl(pl353_smc_base + PL353_SMC_ECC_STATUS_OFFS) &
- PL353_SMC_ECC_STATUS_BUSY) == PL353_SMC_ECC_STATUS_BUSY);
-}
-EXPORT_SYMBOL_GPL(pl353_smc_ecc_is_busy);
-
-/**
- * pl353_smc_get_ecc_val - Read ecc_valueN registers
- * @ecc_reg: Index of the ecc_value reg (0..3)
- * Return: the content of the requested ecc_value register.
- *
- * There are four valid ecc_value registers. The argument is truncated to stay
- * within this valid boundary.
- */
-u32 pl353_smc_get_ecc_val(int ecc_reg)
-{
- u32 addr, reg;
-
- addr = PL353_SMC_ECC_VALUE0_OFFS +
- (ecc_reg * PL353_SMC_ECC_REG_SIZE_OFFS);
- reg = readl(pl353_smc_base + addr);
-
- return reg;
-}
-EXPORT_SYMBOL_GPL(pl353_smc_get_ecc_val);
-
-/**
- * pl353_smc_get_nand_int_status_raw - Get NAND interrupt status bit
- * Return: the raw_int_status1 bit from the memc_status register
- */
-int pl353_smc_get_nand_int_status_raw(void)
-{
- u32 reg;
-
- reg = readl(pl353_smc_base + PL353_SMC_MEMC_STATUS_OFFS);
- reg >>= PL353_SMC_MEMC_STATUS_RAW_INT_1_SHIFT;
- reg &= 1;
-
- return reg;
-}
-EXPORT_SYMBOL_GPL(pl353_smc_get_nand_int_status_raw);
-
-/**
- * pl353_smc_clr_nand_int - Clear NAND interrupt
- */
-void pl353_smc_clr_nand_int(void)
-{
- writel(PL353_SMC_CFG_CLR_INT_CLR_1,
- pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
-}
-EXPORT_SYMBOL_GPL(pl353_smc_clr_nand_int);
-
-/**
- * pl353_smc_set_ecc_mode - Set SMC ECC mode
- * @mode: ECC mode (BYPASS, APB, MEM)
- * Return: 0 on success or negative errno.
- */
-int pl353_smc_set_ecc_mode(enum pl353_smc_ecc_mode mode)
-{
- u32 reg;
- int ret = 0;
-
- switch (mode) {
- case PL353_SMC_ECCMODE_BYPASS:
- case PL353_SMC_ECCMODE_APB:
- case PL353_SMC_ECCMODE_MEM:
-
- reg = readl(pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
- reg &= ~PL353_SMC_ECC_MEMCFG_MODE_MASK;
- reg |= mode << PL353_SMC_ECC_MEMCFG_MODE_SHIFT;
- writel(reg, pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
-
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-EXPORT_SYMBOL_GPL(pl353_smc_set_ecc_mode);
-
-/**
- * pl353_smc_set_ecc_pg_size - Set SMC ECC page size
- * @pg_sz: ECC page size
- * Return: 0 on success or negative errno.
- */
-int pl353_smc_set_ecc_pg_size(unsigned int pg_sz)
-{
- u32 reg, sz;
-
- switch (pg_sz) {
- case 0:
- sz = 0;
- break;
- case SZ_512:
- sz = 1;
- break;
- case SZ_1K:
- sz = 2;
- break;
- case SZ_2K:
- sz = 3;
- break;
- default:
- return -EINVAL;
- }
-
- reg = readl(pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
- reg &= ~PL353_SMC_ECC_MEMCFG_PGSIZE_MASK;
- reg |= sz;
- writel(reg, pl353_smc_base + PL353_SMC_ECC_MEMCFG_OFFS);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(pl353_smc_set_ecc_pg_size);
-
static int __maybe_unused pl353_smc_suspend(struct device *dev)
{
struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev);
@@ -277,8 +36,8 @@ static int __maybe_unused pl353_smc_suspend(struct device *dev)
static int __maybe_unused pl353_smc_resume(struct device *dev)
{
- int ret;
struct pl353_smc_data *pl353_smc = dev_get_drvdata(dev);
+ int ret;
ret = clk_enable(pl353_smc->aclk);
if (ret) {
@@ -296,77 +55,31 @@ static int __maybe_unused pl353_smc_resume(struct device *dev)
return ret;
}
-static struct amba_driver pl353_smc_driver;
-
static SIMPLE_DEV_PM_OPS(pl353_smc_dev_pm_ops, pl353_smc_suspend,
pl353_smc_resume);
-/**
- * pl353_smc_init_nand_interface - Initialize the NAND interface
- * @adev: Pointer to the amba_device struct
- * @nand_node: Pointer to the pl353_nand device_node struct
- */
-static void pl353_smc_init_nand_interface(struct amba_device *adev,
- struct device_node *nand_node)
-{
- unsigned long timeout;
-
- pl353_smc_set_buswidth(PL353_SMC_MEM_WIDTH_8);
- writel(PL353_SMC_CFG_CLR_INT_CLR_1,
- pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
- writel(PL353_SMC_DC_UPT_NAND_REGS, pl353_smc_base +
- PL353_SMC_DIRECT_CMD_OFFS);
-
- timeout = jiffies + PL353_NAND_ECC_BUSY_TIMEOUT;
- /* Wait till the ECC operation is complete */
- do {
- if (pl353_smc_ecc_is_busy())
- cpu_relax();
- else
- break;
- } while (!time_after_eq(jiffies, timeout));
-
- if (time_after_eq(jiffies, timeout))
- return;
-
- writel(PL353_NAND_ECC_CMD1,
- pl353_smc_base + PL353_SMC_ECC_MEMCMD1_OFFS);
- writel(PL353_NAND_ECC_CMD2,
- pl353_smc_base + PL353_SMC_ECC_MEMCMD2_OFFS);
-}
-
static const struct of_device_id pl353_smc_supported_children[] = {
{
.compatible = "cfi-flash"
},
{
.compatible = "arm,pl353-nand-r2p1",
- .data = pl353_smc_init_nand_interface
},
{}
};
static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
{
+ struct device_node *of_node = adev->dev.of_node;
+ const struct of_device_id *match = NULL;
struct pl353_smc_data *pl353_smc;
struct device_node *child;
- struct resource *res;
int err;
- struct device_node *of_node = adev->dev.of_node;
- static void (*init)(struct amba_device *adev,
- struct device_node *nand_node);
- const struct of_device_id *match = NULL;
pl353_smc = devm_kzalloc(&adev->dev, sizeof(*pl353_smc), GFP_KERNEL);
if (!pl353_smc)
return -ENOMEM;
- /* Get the NAND controller virtual address */
- res = &adev->res;
- pl353_smc_base = devm_ioremap_resource(&adev->dev, res);
- if (IS_ERR(pl353_smc_base))
- return PTR_ERR(pl353_smc_base);
-
pl353_smc->aclk = devm_clk_get(&adev->dev, "apb_pclk");
if (IS_ERR(pl353_smc->aclk)) {
dev_err(&adev->dev, "aclk clock not found.\n");
@@ -388,15 +101,11 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
err = clk_prepare_enable(pl353_smc->memclk);
if (err) {
dev_err(&adev->dev, "Unable to enable memory clock.\n");
- goto out_clk_dis_aper;
+ goto disable_axi_clk;
}
amba_set_drvdata(adev, pl353_smc);
- /* clear interrupts */
- writel(PL353_SMC_CFG_CLR_DEFAULT_MASK,
- pl353_smc_base + PL353_SMC_CFG_CLR_OFFS);
-
/* Find compatible children. Only a single child is supported */
for_each_available_child_of_node(of_node, child) {
match = of_match_node(pl353_smc_supported_children, child);
@@ -408,19 +117,16 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id)
}
if (!match) {
dev_err(&adev->dev, "no matching children\n");
- goto out_clk_disable;
+ goto disable_mem_clk;
}
- init = match->data;
- if (init)
- init(adev, child);
of_platform_device_create(child, NULL, &adev->dev);
return 0;
-out_clk_disable:
+disable_mem_clk:
clk_disable_unprepare(pl353_smc->memclk);
-out_clk_dis_aper:
+disable_axi_clk:
clk_disable_unprepare(pl353_smc->aclk);
return err;
@@ -436,8 +142,8 @@ static void pl353_smc_remove(struct amba_device *adev)
static const struct amba_id pl353_ids[] = {
{
- .id = 0x00041353,
- .mask = 0x000fffff,
+ .id = 0x00041353,
+ .mask = 0x000fffff,
},
{ 0, 0 },
};
diff --git a/drivers/mtd/chips/chipreg.c b/drivers/mtd/chips/chipreg.c
index ff86373d7d24..a05e103682a4 100644
--- a/drivers/mtd/chips/chipreg.c
+++ b/drivers/mtd/chips/chipreg.c
@@ -31,14 +31,11 @@ void unregister_mtd_chip_driver(struct mtd_chip_driver *drv)
static struct mtd_chip_driver *get_mtd_chip_driver (const char *name)
{
- struct list_head *pos;
struct mtd_chip_driver *ret = NULL, *this;
spin_lock(&chip_drvs_lock);
- list_for_each(pos, &chip_drvs_list) {
- this = list_entry(pos, typeof(*this), list);
-
+ list_for_each_entry(this, &chip_drvs_list, list) {
if (!strcmp(this->name, name)) {
ret = this;
break;
diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
index 0f4c2d823de8..79cb981ececc 100644
--- a/drivers/mtd/devices/Kconfig
+++ b/drivers/mtd/devices/Kconfig
@@ -89,6 +89,12 @@ config MTD_MCHP23K256
platform data, or a device tree description if you want to
specify device partitioning
+config MTD_MCHP48L640
+ tristate "Microchip 48L640 EERAM"
+ depends on SPI_MASTER
+ help
+ This enables access to Microchip 48L640 EERAM chips, using SPI.
+
config MTD_SPEAR_SMI
tristate "SPEAR MTD NOR Support through SMI controller"
depends on PLAT_SPEAR || COMPILE_TEST
diff --git a/drivers/mtd/devices/Makefile b/drivers/mtd/devices/Makefile
index 991c8d12c016..0362cf6bdc67 100644
--- a/drivers/mtd/devices/Makefile
+++ b/drivers/mtd/devices/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_MTD_LART) += lart.o
obj-$(CONFIG_MTD_BLOCK2MTD) += block2mtd.o
obj-$(CONFIG_MTD_DATAFLASH) += mtd_dataflash.o
obj-$(CONFIG_MTD_MCHP23K256) += mchp23k256.o
+obj-$(CONFIG_MTD_MCHP48L640) += mchp48l640.o
obj-$(CONFIG_MTD_SPEAR_SMI) += spear_smi.o
obj-$(CONFIG_MTD_SST25L) += sst25l.o
obj-$(CONFIG_MTD_BCM47XXSFLASH) += bcm47xxsflash.o
diff --git a/drivers/mtd/devices/mchp48l640.c b/drivers/mtd/devices/mchp48l640.c
new file mode 100644
index 000000000000..efc2003bd13a
--- /dev/null
+++ b/drivers/mtd/devices/mchp48l640.c
@@ -0,0 +1,373 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Microchip 48L640 64 Kb SPI Serial EERAM
+ *
+ * Copyright Heiko Schocher <hs@denx.de>
+ *
+ * datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/20006055B.pdf
+ *
+ * we set continuous mode but reading/writing more bytes than
+ * pagesize seems to bring chip into state where readden values
+ * are wrong ... no idea why.
+ *
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mutex.h>
+#include <linux/sched.h>
+#include <linux/sizes.h>
+#include <linux/spi/flash.h>
+#include <linux/spi/spi.h>
+#include <linux/of_device.h>
+
+struct mchp48_caps {
+ unsigned int size;
+ unsigned int page_size;
+};
+
+struct mchp48l640_flash {
+ struct spi_device *spi;
+ struct mutex lock;
+ struct mtd_info mtd;
+ const struct mchp48_caps *caps;
+};
+
+#define MCHP48L640_CMD_WREN 0x06
+#define MCHP48L640_CMD_WRDI 0x04
+#define MCHP48L640_CMD_WRITE 0x02
+#define MCHP48L640_CMD_READ 0x03
+#define MCHP48L640_CMD_WRSR 0x01
+#define MCHP48L640_CMD_RDSR 0x05
+
+#define MCHP48L640_STATUS_RDY 0x01
+#define MCHP48L640_STATUS_WEL 0x02
+#define MCHP48L640_STATUS_BP0 0x04
+#define MCHP48L640_STATUS_BP1 0x08
+#define MCHP48L640_STATUS_SWM 0x10
+#define MCHP48L640_STATUS_PRO 0x20
+#define MCHP48L640_STATUS_ASE 0x40
+
+#define MCHP48L640_TIMEOUT 100
+
+#define MAX_CMD_SIZE 0x10
+
+#define to_mchp48l640_flash(x) container_of(x, struct mchp48l640_flash, mtd)
+
+static int mchp48l640_mkcmd(struct mchp48l640_flash *flash, u8 cmd, loff_t addr, char *buf)
+{
+ buf[0] = cmd;
+ buf[1] = addr >> 8;
+ buf[2] = addr;
+
+ return 3;
+}
+
+static int mchp48l640_read_status(struct mchp48l640_flash *flash, int *status)
+{
+ unsigned char cmd[2];
+ int ret;
+
+ cmd[0] = MCHP48L640_CMD_RDSR;
+ cmd[1] = 0x00;
+ mutex_lock(&flash->lock);
+ ret = spi_write_then_read(flash->spi, &cmd[0], 1, &cmd[1], 1);
+ mutex_unlock(&flash->lock);
+ if (!ret)
+ *status = cmd[1];
+ dev_dbg(&flash->spi->dev, "read status ret: %d status: %x", ret, *status);
+
+ return ret;
+}
+
+static int mchp48l640_waitforbit(struct mchp48l640_flash *flash, int bit, bool set)
+{
+ int ret, status;
+ unsigned long deadline;
+
+ deadline = jiffies + msecs_to_jiffies(MCHP48L640_TIMEOUT);
+ do {
+ ret = mchp48l640_read_status(flash, &status);
+ dev_dbg(&flash->spi->dev, "read status ret: %d bit: %x %sset status: %x",
+ ret, bit, (set ? "" : "not"), status);
+ if (ret)
+ return ret;
+
+ if (set) {
+ if ((status & bit) == bit)
+ return 0;
+ } else {
+ if ((status & bit) == 0)
+ return 0;
+ }
+
+ usleep_range(1000, 2000);
+ } while (!time_after_eq(jiffies, deadline));
+
+ dev_err(&flash->spi->dev, "Timeout waiting for bit %x %s set in status register.",
+ bit, (set ? "" : "not"));
+ return -ETIMEDOUT;
+}
+
+static int mchp48l640_write_prepare(struct mchp48l640_flash *flash, bool enable)
+{
+ unsigned char cmd[2];
+ int ret;
+
+ if (enable)
+ cmd[0] = MCHP48L640_CMD_WREN;
+ else
+ cmd[0] = MCHP48L640_CMD_WRDI;
+
+ mutex_lock(&flash->lock);
+ ret = spi_write(flash->spi, cmd, 1);
+ mutex_unlock(&flash->lock);
+
+ if (ret)
+ dev_err(&flash->spi->dev, "write %sable failed ret: %d",
+ (enable ? "en" : "dis"), ret);
+
+ dev_dbg(&flash->spi->dev, "write %sable success ret: %d",
+ (enable ? "en" : "dis"), ret);
+ if (enable)
+ return mchp48l640_waitforbit(flash, MCHP48L640_STATUS_WEL, true);
+
+ return ret;
+}
+
+static int mchp48l640_set_mode(struct mchp48l640_flash *flash)
+{
+ unsigned char cmd[2];
+ int ret;
+
+ ret = mchp48l640_write_prepare(flash, true);
+ if (ret)
+ return ret;
+
+ cmd[0] = MCHP48L640_CMD_WRSR;
+ cmd[1] = MCHP48L640_STATUS_PRO;
+
+ mutex_lock(&flash->lock);
+ ret = spi_write(flash->spi, cmd, 2);
+ mutex_unlock(&flash->lock);
+ if (ret)
+ dev_err(&flash->spi->dev, "Could not set continuous mode ret: %d", ret);
+
+ return mchp48l640_waitforbit(flash, MCHP48L640_STATUS_PRO, true);
+}
+
+static int mchp48l640_wait_rdy(struct mchp48l640_flash *flash)
+{
+ return mchp48l640_waitforbit(flash, MCHP48L640_STATUS_RDY, false);
+};
+
+static int mchp48l640_write_page(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const unsigned char *buf)
+{
+ struct mchp48l640_flash *flash = to_mchp48l640_flash(mtd);
+ unsigned char *cmd;
+ int ret;
+ int cmdlen;
+
+ cmd = kmalloc((3 + len), GFP_KERNEL | GFP_DMA);
+ if (!cmd)
+ return -ENOMEM;
+
+ ret = mchp48l640_wait_rdy(flash);
+ if (ret)
+ goto fail;
+
+ ret = mchp48l640_write_prepare(flash, true);
+ if (ret)
+ goto fail;
+
+ mutex_lock(&flash->lock);
+ cmdlen = mchp48l640_mkcmd(flash, MCHP48L640_CMD_WRITE, to, cmd);
+ memcpy(&cmd[cmdlen], buf, len);
+ ret = spi_write(flash->spi, cmd, cmdlen + len);
+ mutex_unlock(&flash->lock);
+ if (!ret)
+ *retlen += len;
+ else
+ goto fail;
+
+ ret = mchp48l640_waitforbit(flash, MCHP48L640_STATUS_WEL, false);
+ if (ret)
+ goto fail;
+
+ kfree(cmd);
+ return 0;
+fail:
+ kfree(cmd);
+ dev_err(&flash->spi->dev, "write fail with: %d", ret);
+ return ret;
+};
+
+static int mchp48l640_write(struct mtd_info *mtd, loff_t to, size_t len,
+ size_t *retlen, const unsigned char *buf)
+{
+ struct mchp48l640_flash *flash = to_mchp48l640_flash(mtd);
+ int ret;
+ size_t wlen = 0;
+ loff_t woff = to;
+ size_t ws;
+ size_t page_sz = flash->caps->page_size;
+
+ /*
+ * we set PRO bit (page rollover), but writing length > page size
+ * does result in total chaos, so write in 32 byte chunks.
+ */
+ while (wlen < len) {
+ ws = min((len - wlen), page_sz);
+ ret = mchp48l640_write_page(mtd, woff, ws, retlen, &buf[wlen]);
+ if (ret)
+ return ret;
+ wlen += ws;
+ woff += ws;
+ }
+
+ return ret;
+}
+
+static int mchp48l640_read_page(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, unsigned char *buf)
+{
+ struct mchp48l640_flash *flash = to_mchp48l640_flash(mtd);
+ unsigned char *cmd;
+ int ret;
+ int cmdlen;
+
+ cmd = kmalloc((3 + len), GFP_KERNEL | GFP_DMA);
+ if (!cmd)
+ return -ENOMEM;
+
+ ret = mchp48l640_wait_rdy(flash);
+ if (ret)
+ goto fail;
+
+ mutex_lock(&flash->lock);
+ cmdlen = mchp48l640_mkcmd(flash, MCHP48L640_CMD_READ, from, cmd);
+ ret = spi_write_then_read(flash->spi, cmd, cmdlen, buf, len);
+ mutex_unlock(&flash->lock);
+ if (!ret)
+ *retlen += len;
+
+ return ret;
+
+fail:
+ kfree(cmd);
+ dev_err(&flash->spi->dev, "read fail with: %d", ret);
+ return ret;
+}
+
+static int mchp48l640_read(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, unsigned char *buf)
+{
+ struct mchp48l640_flash *flash = to_mchp48l640_flash(mtd);
+ int ret;
+ size_t wlen = 0;
+ loff_t woff = from;
+ size_t ws;
+ size_t page_sz = flash->caps->page_size;
+
+ /*
+ * we set PRO bit (page rollover), but if read length > page size
+ * does result in total chaos in result ...
+ */
+ while (wlen < len) {
+ ws = min((len - wlen), page_sz);
+ ret = mchp48l640_read_page(mtd, woff, ws, retlen, &buf[wlen]);
+ if (ret)
+ return ret;
+ wlen += ws;
+ woff += ws;
+ }
+
+ return ret;
+};
+
+static const struct mchp48_caps mchp48l640_caps = {
+ .size = SZ_8K,
+ .page_size = 32,
+};
+
+static int mchp48l640_probe(struct spi_device *spi)
+{
+ struct mchp48l640_flash *flash;
+ struct flash_platform_data *data;
+ int err;
+ int status;
+
+ flash = devm_kzalloc(&spi->dev, sizeof(*flash), GFP_KERNEL);
+ if (!flash)
+ return -ENOMEM;
+
+ flash->spi = spi;
+ mutex_init(&flash->lock);
+ spi_set_drvdata(spi, flash);
+
+ err = mchp48l640_read_status(flash, &status);
+ if (err)
+ return err;
+
+ err = mchp48l640_set_mode(flash);
+ if (err)
+ return err;
+
+ data = dev_get_platdata(&spi->dev);
+
+ flash->caps = of_device_get_match_data(&spi->dev);
+ if (!flash->caps)
+ flash->caps = &mchp48l640_caps;
+
+ mtd_set_of_node(&flash->mtd, spi->dev.of_node);
+ flash->mtd.dev.parent = &spi->dev;
+ flash->mtd.type = MTD_RAM;
+ flash->mtd.flags = MTD_CAP_RAM;
+ flash->mtd.writesize = flash->caps->page_size;
+ flash->mtd.size = flash->caps->size;
+ flash->mtd._read = mchp48l640_read;
+ flash->mtd._write = mchp48l640_write;
+
+ err = mtd_device_register(&flash->mtd, data ? data->parts : NULL,
+ data ? data->nr_parts : 0);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int mchp48l640_remove(struct spi_device *spi)
+{
+ struct mchp48l640_flash *flash = spi_get_drvdata(spi);
+
+ return mtd_device_unregister(&flash->mtd);
+}
+
+static const struct of_device_id mchp48l640_of_table[] = {
+ {
+ .compatible = "microchip,48l640",
+ .data = &mchp48l640_caps,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(of, mchp48l640_of_table);
+
+static struct spi_driver mchp48l640_driver = {
+ .driver = {
+ .name = "mchp48l640",
+ .of_match_table = of_match_ptr(mchp48l640_of_table),
+ },
+ .probe = mchp48l640_probe,
+ .remove = mchp48l640_remove,
+};
+
+module_spi_driver(mchp48l640_driver);
+
+MODULE_DESCRIPTION("MTD SPI driver for Microchip 48l640 EERAM chips");
+MODULE_AUTHOR("Heiko Schocher <hs@denx.de>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("spi:mchp48l640");
diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c
index fb4a6aa24543..08f76ff839a7 100644
--- a/drivers/mtd/devices/ms02-nv.c
+++ b/drivers/mtd/devices/ms02-nv.c
@@ -286,7 +286,6 @@ static int __init ms02nv_init(void)
break;
default:
return -ENODEV;
- break;
}
for (i = 0; i < ARRAY_SIZE(ms02nv_addrs); i++)
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index 5b04ae6c3057..6ed6c51fac69 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -270,6 +270,7 @@ static int phram_setup(const char *val)
if (len == 0 || erasesize == 0 || erasesize > len
|| erasesize > UINT_MAX || rem) {
parse_err("illegal erasesize or len\n");
+ ret = -EINVAL;
goto error;
}
diff --git a/drivers/mtd/inftlmount.c b/drivers/mtd/inftlmount.c
index af16d3485de0..6276daa296da 100644
--- a/drivers/mtd/inftlmount.c
+++ b/drivers/mtd/inftlmount.c
@@ -259,20 +259,13 @@ static int find_boot_record(struct INFTLrecord *inftl)
/* Memory alloc */
inftl->PUtable = kmalloc_array(inftl->nb_blocks, sizeof(u16),
GFP_KERNEL);
- if (!inftl->PUtable) {
- printk(KERN_WARNING "INFTL: allocation of PUtable "
- "failed (%zd bytes)\n",
- inftl->nb_blocks * sizeof(u16));
+ if (!inftl->PUtable)
return -ENOMEM;
- }
inftl->VUtable = kmalloc_array(inftl->nb_blocks, sizeof(u16),
GFP_KERNEL);
if (!inftl->VUtable) {
kfree(inftl->PUtable);
- printk(KERN_WARNING "INFTL: allocation of VUtable "
- "failed (%zd bytes)\n",
- inftl->nb_blocks * sizeof(u16));
return -ENOMEM;
}
@@ -330,7 +323,7 @@ static int check_free_sectors(struct INFTLrecord *inftl, unsigned int address,
buf = kmalloc(SECTORSIZE + mtd->oobsize, GFP_KERNEL);
if (!buf)
- return -1;
+ return -ENOMEM;
ret = -1;
for (i = 0; i < len; i += SECTORSIZE) {
@@ -558,12 +551,8 @@ int INFTL_mount(struct INFTLrecord *s)
/* Temporary buffer to store ANAC numbers. */
ANACtable = kcalloc(s->nb_blocks, sizeof(u8), GFP_KERNEL);
- if (!ANACtable) {
- printk(KERN_WARNING "INFTL: allocation of ANACtable "
- "failed (%zd bytes)\n",
- s->nb_blocks * sizeof(u8));
+ if (!ANACtable)
return -ENOMEM;
- }
/*
* First pass is to explore each physical unit, and construct the
diff --git a/drivers/mtd/maps/amd76xrom.c b/drivers/mtd/maps/amd76xrom.c
index 42a95ba40f2c..281fcbaa74e7 100644
--- a/drivers/mtd/maps/amd76xrom.c
+++ b/drivers/mtd/maps/amd76xrom.c
@@ -189,10 +189,8 @@ static int amd76xrom_init_one(struct pci_dev *pdev,
if (!map) {
map = kmalloc(sizeof(*map), GFP_KERNEL);
- }
- if (!map) {
- printk(KERN_ERR MOD_NAME ": kmalloc failed");
- goto out;
+ if (!map)
+ goto out;
}
memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
index 460494212f6a..c0216bc740cc 100644
--- a/drivers/mtd/maps/ck804xrom.c
+++ b/drivers/mtd/maps/ck804xrom.c
@@ -217,12 +217,10 @@ static int __init ck804xrom_init_one(struct pci_dev *pdev,
unsigned long offset;
int i;
- if (!map)
- map = kmalloc(sizeof(*map), GFP_KERNEL);
-
if (!map) {
- printk(KERN_ERR MOD_NAME ": kmalloc failed");
- goto out;
+ map = kmalloc(sizeof(*map), GFP_KERNEL);
+ if (!map)
+ goto out;
}
memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
diff --git a/drivers/mtd/maps/esb2rom.c b/drivers/mtd/maps/esb2rom.c
index 85e14150a073..15d5b76ff504 100644
--- a/drivers/mtd/maps/esb2rom.c
+++ b/drivers/mtd/maps/esb2rom.c
@@ -277,11 +277,10 @@ static int __init esb2rom_init_one(struct pci_dev *pdev,
unsigned long offset;
int i;
- if (!map)
- map = kmalloc(sizeof(*map), GFP_KERNEL);
if (!map) {
- printk(KERN_ERR MOD_NAME ": kmalloc failed");
- goto out;
+ map = kmalloc(sizeof(*map), GFP_KERNEL);
+ if (!map)
+ goto out;
}
memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
diff --git a/drivers/mtd/maps/ichxrom.c b/drivers/mtd/maps/ichxrom.c
index fda72c5fd8f9..c8b2793691db 100644
--- a/drivers/mtd/maps/ichxrom.c
+++ b/drivers/mtd/maps/ichxrom.c
@@ -213,10 +213,8 @@ static int __init ichxrom_init_one(struct pci_dev *pdev,
if (!map) {
map = kmalloc(sizeof(*map), GFP_KERNEL);
- }
- if (!map) {
- printk(KERN_ERR MOD_NAME ": kmalloc failed");
- goto out;
+ if (!map)
+ goto out;
}
memset(map, 0, sizeof(*map));
INIT_LIST_HEAD(&map->list);
diff --git a/drivers/mtd/maps/plat-ram.c b/drivers/mtd/maps/plat-ram.c
index 0bec7c791d17..cedd8ef9a6bf 100644
--- a/drivers/mtd/maps/plat-ram.c
+++ b/drivers/mtd/maps/plat-ram.c
@@ -127,7 +127,6 @@ static int platram_probe(struct platform_device *pdev)
info->map.virt = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(info->map.virt)) {
err = PTR_ERR(info->map.virt);
- dev_err(&pdev->dev, "failed to ioremap() region\n");
goto exit_free;
}
diff --git a/drivers/mtd/maps/sun_uflash.c b/drivers/mtd/maps/sun_uflash.c
index f9cfb084c029..6c0c91bfec05 100644
--- a/drivers/mtd/maps/sun_uflash.c
+++ b/drivers/mtd/maps/sun_uflash.c
@@ -62,10 +62,8 @@ int uflash_devinit(struct platform_device *op, struct device_node *dp)
}
up = kzalloc(sizeof(struct uflash_dev), GFP_KERNEL);
- if (!up) {
- printk(KERN_ERR PFX "Cannot allocate struct uflash_dev\n");
+ if (!up)
return -ENOMEM;
- }
/* copy defaults and tweak parameters */
memcpy(&up->map, &uflash_map_templ, sizeof(uflash_map_templ));
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 9aaeadd53eb4..b5ccd3037788 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -96,6 +96,12 @@ static void mtd_release(struct device *dev)
device_destroy(&mtd_class, index + 1);
}
+#define MTD_DEVICE_ATTR_RO(name) \
+static DEVICE_ATTR(name, 0444, mtd_##name##_show, NULL)
+
+#define MTD_DEVICE_ATTR_RW(name) \
+static DEVICE_ATTR(name, 0644, mtd_##name##_show, mtd_##name##_store)
+
static ssize_t mtd_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -131,46 +137,45 @@ static ssize_t mtd_type_show(struct device *dev,
type = "unknown";
}
- return snprintf(buf, PAGE_SIZE, "%s\n", type);
+ return sysfs_emit(buf, "%s\n", type);
}
-static DEVICE_ATTR(type, S_IRUGO, mtd_type_show, NULL);
+MTD_DEVICE_ATTR_RO(type);
static ssize_t mtd_flags_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "0x%lx\n", (unsigned long)mtd->flags);
+ return sysfs_emit(buf, "0x%lx\n", (unsigned long)mtd->flags);
}
-static DEVICE_ATTR(flags, S_IRUGO, mtd_flags_show, NULL);
+MTD_DEVICE_ATTR_RO(flags);
static ssize_t mtd_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%llu\n",
- (unsigned long long)mtd->size);
+ return sysfs_emit(buf, "%llu\n", (unsigned long long)mtd->size);
}
-static DEVICE_ATTR(size, S_IRUGO, mtd_size_show, NULL);
+MTD_DEVICE_ATTR_RO(size);
static ssize_t mtd_erasesize_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->erasesize);
+ return sysfs_emit(buf, "%lu\n", (unsigned long)mtd->erasesize);
}
-static DEVICE_ATTR(erasesize, S_IRUGO, mtd_erasesize_show, NULL);
+MTD_DEVICE_ATTR_RO(erasesize);
static ssize_t mtd_writesize_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->writesize);
+ return sysfs_emit(buf, "%lu\n", (unsigned long)mtd->writesize);
}
-static DEVICE_ATTR(writesize, S_IRUGO, mtd_writesize_show, NULL);
+MTD_DEVICE_ATTR_RO(writesize);
static ssize_t mtd_subpagesize_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -178,55 +183,54 @@ static ssize_t mtd_subpagesize_show(struct device *dev,
struct mtd_info *mtd = dev_get_drvdata(dev);
unsigned int subpagesize = mtd->writesize >> mtd->subpage_sft;
- return snprintf(buf, PAGE_SIZE, "%u\n", subpagesize);
+ return sysfs_emit(buf, "%u\n", subpagesize);
}
-static DEVICE_ATTR(subpagesize, S_IRUGO, mtd_subpagesize_show, NULL);
+MTD_DEVICE_ATTR_RO(subpagesize);
static ssize_t mtd_oobsize_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->oobsize);
+ return sysfs_emit(buf, "%lu\n", (unsigned long)mtd->oobsize);
}
-static DEVICE_ATTR(oobsize, S_IRUGO, mtd_oobsize_show, NULL);
+MTD_DEVICE_ATTR_RO(oobsize);
static ssize_t mtd_oobavail_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%u\n", mtd->oobavail);
+ return sysfs_emit(buf, "%u\n", mtd->oobavail);
}
-static DEVICE_ATTR(oobavail, S_IRUGO, mtd_oobavail_show, NULL);
+MTD_DEVICE_ATTR_RO(oobavail);
static ssize_t mtd_numeraseregions_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%u\n", mtd->numeraseregions);
+ return sysfs_emit(buf, "%u\n", mtd->numeraseregions);
}
-static DEVICE_ATTR(numeraseregions, S_IRUGO, mtd_numeraseregions_show,
- NULL);
+MTD_DEVICE_ATTR_RO(numeraseregions);
static ssize_t mtd_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%s\n", mtd->name);
+ return sysfs_emit(buf, "%s\n", mtd->name);
}
-static DEVICE_ATTR(name, S_IRUGO, mtd_name_show, NULL);
+MTD_DEVICE_ATTR_RO(name);
static ssize_t mtd_ecc_strength_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_strength);
+ return sysfs_emit(buf, "%u\n", mtd->ecc_strength);
}
-static DEVICE_ATTR(ecc_strength, S_IRUGO, mtd_ecc_strength_show, NULL);
+MTD_DEVICE_ATTR_RO(ecc_strength);
static ssize_t mtd_bitflip_threshold_show(struct device *dev,
struct device_attribute *attr,
@@ -234,7 +238,7 @@ static ssize_t mtd_bitflip_threshold_show(struct device *dev,
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%u\n", mtd->bitflip_threshold);
+ return sysfs_emit(buf, "%u\n", mtd->bitflip_threshold);
}
static ssize_t mtd_bitflip_threshold_store(struct device *dev,
@@ -252,60 +256,57 @@ static ssize_t mtd_bitflip_threshold_store(struct device *dev,
mtd->bitflip_threshold = bitflip_threshold;
return count;
}
-static DEVICE_ATTR(bitflip_threshold, S_IRUGO | S_IWUSR,
- mtd_bitflip_threshold_show,
- mtd_bitflip_threshold_store);
+MTD_DEVICE_ATTR_RW(bitflip_threshold);
static ssize_t mtd_ecc_step_size_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%u\n", mtd->ecc_step_size);
+ return sysfs_emit(buf, "%u\n", mtd->ecc_step_size);
}
-static DEVICE_ATTR(ecc_step_size, S_IRUGO, mtd_ecc_step_size_show, NULL);
+MTD_DEVICE_ATTR_RO(ecc_step_size);
-static ssize_t mtd_ecc_stats_corrected_show(struct device *dev,
+static ssize_t mtd_corrected_bits_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;
- return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->corrected);
+ return sysfs_emit(buf, "%u\n", ecc_stats->corrected);
}
-static DEVICE_ATTR(corrected_bits, S_IRUGO,
- mtd_ecc_stats_corrected_show, NULL);
+MTD_DEVICE_ATTR_RO(corrected_bits); /* ecc stats corrected */
-static ssize_t mtd_ecc_stats_errors_show(struct device *dev,
+static ssize_t mtd_ecc_failures_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;
- return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->failed);
+ return sysfs_emit(buf, "%u\n", ecc_stats->failed);
}
-static DEVICE_ATTR(ecc_failures, S_IRUGO, mtd_ecc_stats_errors_show, NULL);
+MTD_DEVICE_ATTR_RO(ecc_failures); /* ecc stats errors */
-static ssize_t mtd_badblocks_show(struct device *dev,
+static ssize_t mtd_bad_blocks_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;
- return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->badblocks);
+ return sysfs_emit(buf, "%u\n", ecc_stats->badblocks);
}
-static DEVICE_ATTR(bad_blocks, S_IRUGO, mtd_badblocks_show, NULL);
+MTD_DEVICE_ATTR_RO(bad_blocks);
-static ssize_t mtd_bbtblocks_show(struct device *dev,
+static ssize_t mtd_bbt_blocks_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
struct mtd_ecc_stats *ecc_stats = &mtd->ecc_stats;
- return snprintf(buf, PAGE_SIZE, "%u\n", ecc_stats->bbtblocks);
+ return sysfs_emit(buf, "%u\n", ecc_stats->bbtblocks);
}
-static DEVICE_ATTR(bbt_blocks, S_IRUGO, mtd_bbtblocks_show, NULL);
+MTD_DEVICE_ATTR_RO(bbt_blocks);
static struct attribute *mtd_attrs[] = {
&dev_attr_type.attr,
@@ -361,6 +362,7 @@ static struct dentry *dfs_dir_mtd;
static void mtd_debugfs_populate(struct mtd_info *mtd)
{
+ struct mtd_info *master = mtd_get_master(mtd);
struct device *dev = &mtd->dev;
struct dentry *root;
@@ -370,12 +372,12 @@ static void mtd_debugfs_populate(struct mtd_info *mtd)
root = debugfs_create_dir(dev_name(dev), dfs_dir_mtd);
mtd->dbg.dfs_dir = root;
- if (mtd->dbg.partid)
- debugfs_create_file("partid", 0400, root, mtd,
+ if (master->dbg.partid)
+ debugfs_create_file("partid", 0400, root, master,
&mtd_partid_debug_fops);
- if (mtd->dbg.partname)
- debugfs_create_file("partname", 0400, root, mtd,
+ if (master->dbg.partname)
+ debugfs_create_file("partname", 0400, root, master,
&mtd_partname_debug_fops);
}
@@ -777,6 +779,148 @@ static void mtd_set_dev_defaults(struct mtd_info *mtd)
mutex_init(&mtd->master.chrdev_lock);
}
+static ssize_t mtd_otp_size(struct mtd_info *mtd, bool is_user)
+{
+ struct otp_info *info;
+ ssize_t size = 0;
+ unsigned int i;
+ size_t retlen;
+ int ret;
+
+ info = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ if (is_user)
+ ret = mtd_get_user_prot_info(mtd, PAGE_SIZE, &retlen, info);
+ else
+ ret = mtd_get_fact_prot_info(mtd, PAGE_SIZE, &retlen, info);
+ if (ret)
+ goto err;
+
+ for (i = 0; i < retlen / sizeof(*info); i++)
+ size += info[i].length;
+
+ kfree(info);
+ return size;
+
+err:
+ kfree(info);
+ return ret;
+}
+
+static struct nvmem_device *mtd_otp_nvmem_register(struct mtd_info *mtd,
+ const char *compatible,
+ int size,
+ nvmem_reg_read_t reg_read)
+{
+ struct nvmem_device *nvmem = NULL;
+ struct nvmem_config config = {};
+ struct device_node *np;
+
+ /* DT binding is optional */
+ np = of_get_compatible_child(mtd->dev.of_node, compatible);
+
+ /* OTP nvmem will be registered on the physical device */
+ config.dev = mtd->dev.parent;
+ /* just reuse the compatible as name */
+ config.name = compatible;
+ config.id = NVMEM_DEVID_NONE;
+ config.owner = THIS_MODULE;
+ config.type = NVMEM_TYPE_OTP;
+ config.root_only = true;
+ config.reg_read = reg_read;
+ config.size = size;
+ config.of_node = np;
+ config.priv = mtd;
+
+ nvmem = nvmem_register(&config);
+ /* Just ignore if there is no NVMEM support in the kernel */
+ if (IS_ERR(nvmem) && PTR_ERR(nvmem) == -EOPNOTSUPP)
+ nvmem = NULL;
+
+ of_node_put(np);
+
+ return nvmem;
+}
+
+static int mtd_nvmem_user_otp_reg_read(void *priv, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct mtd_info *mtd = priv;
+ size_t retlen;
+ int ret;
+
+ ret = mtd_read_user_prot_reg(mtd, offset, bytes, &retlen, val);
+ if (ret)
+ return ret;
+
+ return retlen == bytes ? 0 : -EIO;
+}
+
+static int mtd_nvmem_fact_otp_reg_read(void *priv, unsigned int offset,
+ void *val, size_t bytes)
+{
+ struct mtd_info *mtd = priv;
+ size_t retlen;
+ int ret;
+
+ ret = mtd_read_fact_prot_reg(mtd, offset, bytes, &retlen, val);
+ if (ret)
+ return ret;
+
+ return retlen == bytes ? 0 : -EIO;
+}
+
+static int mtd_otp_nvmem_add(struct mtd_info *mtd)
+{
+ struct nvmem_device *nvmem;
+ ssize_t size;
+ int err;
+
+ if (mtd->_get_user_prot_info && mtd->_read_user_prot_reg) {
+ size = mtd_otp_size(mtd, true);
+ if (size < 0)
+ return size;
+
+ if (size > 0) {
+ nvmem = mtd_otp_nvmem_register(mtd, "user-otp", size,
+ mtd_nvmem_user_otp_reg_read);
+ if (IS_ERR(nvmem)) {
+ dev_err(&mtd->dev, "Failed to register OTP NVMEM device\n");
+ return PTR_ERR(nvmem);
+ }
+ mtd->otp_user_nvmem = nvmem;
+ }
+ }
+
+ if (mtd->_get_fact_prot_info && mtd->_read_fact_prot_reg) {
+ size = mtd_otp_size(mtd, false);
+ if (size < 0) {
+ err = size;
+ goto err;
+ }
+
+ if (size > 0) {
+ nvmem = mtd_otp_nvmem_register(mtd, "factory-otp", size,
+ mtd_nvmem_fact_otp_reg_read);
+ if (IS_ERR(nvmem)) {
+ dev_err(&mtd->dev, "Failed to register OTP NVMEM device\n");
+ err = PTR_ERR(nvmem);
+ goto err;
+ }
+ mtd->otp_factory_nvmem = nvmem;
+ }
+ }
+
+ return 0;
+
+err:
+ if (mtd->otp_user_nvmem)
+ nvmem_unregister(mtd->otp_user_nvmem);
+ return err;
+}
+
/**
* mtd_device_parse_register - parse partitions and register an MTD device.
*
@@ -852,6 +996,8 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
register_reboot_notifier(&mtd->reboot_notifier);
}
+ ret = mtd_otp_nvmem_add(mtd);
+
out:
if (ret && device_is_registered(&mtd->dev))
del_mtd_device(mtd);
@@ -873,6 +1019,12 @@ int mtd_device_unregister(struct mtd_info *master)
if (master->_reboot)
unregister_reboot_notifier(&master->reboot_notifier);
+ if (master->otp_user_nvmem)
+ nvmem_unregister(master->otp_user_nvmem);
+
+ if (master->otp_factory_nvmem)
+ nvmem_unregister(master->otp_factory_nvmem);
+
err = del_mtd_partitions(master);
if (err)
return err;
diff --git a/drivers/mtd/mtdoops.c b/drivers/mtd/mtdoops.c
index 862c4a889234..227df24387df 100644
--- a/drivers/mtd/mtdoops.c
+++ b/drivers/mtd/mtdoops.c
@@ -401,10 +401,8 @@ static int __init mtdoops_init(void)
cxt->mtd_index = mtd_index;
cxt->oops_buf = vmalloc(record_size);
- if (!cxt->oops_buf) {
- printk(KERN_ERR "mtdoops: failed to allocate buffer workspace\n");
+ if (!cxt->oops_buf)
return -ENOMEM;
- }
memset(cxt->oops_buf, 0xff, record_size);
cxt->oops_buf_busy = 0;
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 665fd9020b76..04af12b66110 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -212,15 +212,14 @@ out_register:
return child;
}
-static ssize_t mtd_partition_offset_show(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = dev_get_drvdata(dev);
- return snprintf(buf, PAGE_SIZE, "%lld\n", mtd->part.offset);
+ return sysfs_emit(buf, "%lld\n", mtd->part.offset);
}
-
-static DEVICE_ATTR(offset, S_IRUGO, mtd_partition_offset_show, NULL);
+static DEVICE_ATTR_RO(offset); /* mtd partition offset */
static const struct attribute *mtd_partition_attrs[] = {
&dev_attr_offset.attr,
diff --git a/drivers/mtd/nand/bbt.c b/drivers/mtd/nand/bbt.c
index 044adf913854..64af6898131d 100644
--- a/drivers/mtd/nand/bbt.c
+++ b/drivers/mtd/nand/bbt.c
@@ -123,7 +123,7 @@ int nanddev_bbt_set_block_status(struct nand_device *nand, unsigned int entry,
unsigned int rbits = bits_per_block + offs - BITS_PER_LONG;
pos[1] &= ~GENMASK(rbits - 1, 0);
- pos[1] |= val >> rbits;
+ pos[1] |= val >> (bits_per_block - rbits);
}
return 0;
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig
index 30f061939560..630728de4b7c 100644
--- a/drivers/mtd/nand/raw/Kconfig
+++ b/drivers/mtd/nand/raw/Kconfig
@@ -453,6 +453,14 @@ config MTD_NAND_ROCKCHIP
NFC v800: RK3308, RV1108
NFC v900: PX30, RK3326
+config MTD_NAND_PL35X
+ tristate "ARM PL35X NAND controller"
+ depends on OF || COMPILE_TEST
+ depends on PL353_SMC
+ help
+ Enables support for PrimeCell SMC PL351 and PL353 NAND
+ controller found on Zynq7000.
+
comment "Misc"
config MTD_SM_COMMON
diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile
index d011c6c53f8f..2f97958c3a33 100644
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -57,6 +57,7 @@ obj-$(CONFIG_MTD_NAND_CADENCE) += cadence-nand-controller.o
obj-$(CONFIG_MTD_NAND_ARASAN) += arasan-nand-controller.o
obj-$(CONFIG_MTD_NAND_INTEL_LGM) += intel-nand-controller.o
obj-$(CONFIG_MTD_NAND_ROCKCHIP) += rockchip-nand-controller.o
+obj-$(CONFIG_MTD_NAND_PL35X) += pl35x-nand-controller.o
nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
nand-objs += nand_onfi.o
diff --git a/drivers/mtd/nand/raw/arasan-nand-controller.c b/drivers/mtd/nand/raw/arasan-nand-controller.c
index 549aac00228e..9cbcc698c64d 100644
--- a/drivers/mtd/nand/raw/arasan-nand-controller.c
+++ b/drivers/mtd/nand/raw/arasan-nand-controller.c
@@ -15,6 +15,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
+#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/iopoll.h>
#include <linux/module.h>
@@ -53,6 +54,7 @@
#define PROG_RST BIT(8)
#define PROG_GET_FEATURE BIT(9)
#define PROG_SET_FEATURE BIT(10)
+#define PROG_CHG_RD_COL_ENH BIT(14)
#define INTR_STS_EN_REG 0x14
#define INTR_SIG_EN_REG 0x18
@@ -70,6 +72,15 @@
#define FLASH_STS_REG 0x28
+#define TIMING_REG 0x2C
+#define TCCS_TIME_500NS 0
+#define TCCS_TIME_300NS 3
+#define TCCS_TIME_200NS 2
+#define TCCS_TIME_100NS 1
+#define FAST_TCAD BIT(2)
+#define DQS_BUFF_SEL_IN(x) FIELD_PREP(GENMASK(6, 3), (x))
+#define DQS_BUFF_SEL_OUT(x) FIELD_PREP(GENMASK(18, 15), (x))
+
#define DATA_PORT_REG 0x30
#define ECC_CONF_REG 0x34
@@ -91,7 +102,7 @@
#define DATA_INTERFACE_REG 0x6C
#define DIFACE_SDR_MODE(x) FIELD_PREP(GENMASK(2, 0), (x))
-#define DIFACE_DDR_MODE(x) FIELD_PREP(GENMASK(5, 3), (X))
+#define DIFACE_DDR_MODE(x) FIELD_PREP(GENMASK(5, 3), (x))
#define DIFACE_SDR 0
#define DIFACE_NVDDR BIT(9)
@@ -107,6 +118,8 @@
#define ANFC_XLNX_SDR_DFLT_CORE_CLK 100000000
#define ANFC_XLNX_SDR_HS_CORE_CLK 80000000
+static struct gpio_desc *anfc_default_cs_array[2] = {NULL, NULL};
+
/**
* struct anfc_op - Defines how to execute an operation
* @pkt_reg: Packet register
@@ -137,11 +150,11 @@ struct anfc_op {
* struct anand - Defines the NAND chip related information
* @node: Used to store NAND chips into a list
* @chip: NAND chip information structure
- * @cs: Chip select line
* @rb: Ready-busy line
* @page_sz: Register value of the page_sz field to use
* @clk: Expected clock frequency to use
- * @timings: Data interface timing mode to use
+ * @data_iface: Data interface timing mode to use
+ * @timings: NV-DDR specific timings to use
* @ecc_conf: Hardware ECC configuration value
* @strength: Register value of the ECC strength
* @raddr_cycles: Row address cycle information
@@ -151,14 +164,17 @@ struct anfc_op {
* @errloc: Array of errors located with soft BCH
* @hw_ecc: Buffer to store syndromes computed by hardware
* @bch: BCH structure
+ * @cs_idx: Array of chip-select for this device, values are indexes
+ * of the controller structure @gpio_cs array
+ * @ncs_idx: Size of the @cs_idx array
*/
struct anand {
struct list_head node;
struct nand_chip chip;
- unsigned int cs;
unsigned int rb;
unsigned int page_sz;
unsigned long clk;
+ u32 data_iface;
u32 timings;
u32 ecc_conf;
u32 strength;
@@ -169,6 +185,8 @@ struct anand {
unsigned int *errloc;
u8 *hw_ecc;
struct bch_control *bch;
+ int *cs_idx;
+ int ncs_idx;
};
/**
@@ -179,8 +197,14 @@ struct anand {
* @bus_clk: Pointer to the flash clock
* @controller: Base controller structure
* @chips: List of all NAND chips attached to the controller
- * @assigned_cs: Bitmask describing already assigned CS lines
* @cur_clk: Current clock rate
+ * @cs_array: CS array. Native CS are left empty, the other cells are
+ * populated with their corresponding GPIO descriptor.
+ * @ncs: Size of @cs_array
+ * @cur_cs: Index in @cs_array of the currently in use CS
+ * @native_cs: Currently selected native CS
+ * @spare_cs: Native CS that is not wired (may be selected when a GPIO
+ * CS is in use)
*/
struct arasan_nfc {
struct device *dev;
@@ -189,8 +213,12 @@ struct arasan_nfc {
struct clk *bus_clk;
struct nand_controller controller;
struct list_head chips;
- unsigned long assigned_cs;
unsigned int cur_clk;
+ struct gpio_desc **cs_array;
+ unsigned int ncs;
+ int cur_cs;
+ unsigned int native_cs;
+ unsigned int spare_cs;
};
static struct anand *to_anand(struct nand_chip *nand)
@@ -273,6 +301,72 @@ static int anfc_pkt_len_config(unsigned int len, unsigned int *steps,
return 0;
}
+static bool anfc_is_gpio_cs(struct arasan_nfc *nfc, int nfc_cs)
+{
+ return nfc_cs >= 0 && nfc->cs_array[nfc_cs];
+}
+
+static int anfc_relative_to_absolute_cs(struct anand *anand, int num)
+{
+ return anand->cs_idx[num];
+}
+
+static void anfc_assert_cs(struct arasan_nfc *nfc, unsigned int nfc_cs_idx)
+{
+ /* CS did not change: do nothing */
+ if (nfc->cur_cs == nfc_cs_idx)
+ return;
+
+ /* Deassert the previous CS if it was a GPIO */
+ if (anfc_is_gpio_cs(nfc, nfc->cur_cs))
+ gpiod_set_value_cansleep(nfc->cs_array[nfc->cur_cs], 1);
+
+ /* Assert the new one */
+ if (anfc_is_gpio_cs(nfc, nfc_cs_idx)) {
+ nfc->native_cs = nfc->spare_cs;
+ gpiod_set_value_cansleep(nfc->cs_array[nfc_cs_idx], 0);
+ } else {
+ nfc->native_cs = nfc_cs_idx;
+ }
+
+ nfc->cur_cs = nfc_cs_idx;
+}
+
+static int anfc_select_target(struct nand_chip *chip, int target)
+{
+ struct anand *anand = to_anand(chip);
+ struct arasan_nfc *nfc = to_anfc(chip->controller);
+ unsigned int nfc_cs_idx = anfc_relative_to_absolute_cs(anand, target);
+ int ret;
+
+ anfc_assert_cs(nfc, nfc_cs_idx);
+
+ /* Update the controller timings and the potential ECC configuration */
+ writel_relaxed(anand->data_iface, nfc->base + DATA_INTERFACE_REG);
+ writel_relaxed(anand->timings, nfc->base + TIMING_REG);
+
+ /* Update clock frequency */
+ if (nfc->cur_clk != anand->clk) {
+ clk_disable_unprepare(nfc->controller_clk);
+ ret = clk_set_rate(nfc->controller_clk, anand->clk);
+ if (ret) {
+ dev_err(nfc->dev, "Failed to change clock rate\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(nfc->controller_clk);
+ if (ret) {
+ dev_err(nfc->dev,
+ "Failed to re-enable the controller clock\n");
+ return ret;
+ }
+
+ nfc->cur_clk = anand->clk;
+ }
+
+ return 0;
+}
+
/*
* When using the embedded hardware ECC engine, the controller is in charge of
* feeding the engine with, first, the ECC residue present in the data array.
@@ -315,7 +409,7 @@ static int anfc_read_page_hw_ecc(struct nand_chip *chip, u8 *buf,
.addr2_reg =
((page >> 16) & 0xFF) |
ADDR2_STRENGTH(anand->strength) |
- ADDR2_CS(anand->cs),
+ ADDR2_CS(nfc->native_cs),
.cmd_reg =
CMD_1(NAND_CMD_READ0) |
CMD_2(NAND_CMD_READSTART) |
@@ -401,6 +495,18 @@ static int anfc_read_page_hw_ecc(struct nand_chip *chip, u8 *buf,
return 0;
}
+static int anfc_sel_read_page_hw_ecc(struct nand_chip *chip, u8 *buf,
+ int oob_required, int page)
+{
+ int ret;
+
+ ret = anfc_select_target(chip, chip->cur_cs);
+ if (ret)
+ return ret;
+
+ return anfc_read_page_hw_ecc(chip, buf, oob_required, page);
+};
+
static int anfc_write_page_hw_ecc(struct nand_chip *chip, const u8 *buf,
int oob_required, int page)
{
@@ -420,7 +526,7 @@ static int anfc_write_page_hw_ecc(struct nand_chip *chip, const u8 *buf,
.addr2_reg =
((page >> 16) & 0xFF) |
ADDR2_STRENGTH(anand->strength) |
- ADDR2_CS(anand->cs),
+ ADDR2_CS(nfc->native_cs),
.cmd_reg =
CMD_1(NAND_CMD_SEQIN) |
CMD_2(NAND_CMD_PAGEPROG) |
@@ -461,11 +567,24 @@ static int anfc_write_page_hw_ecc(struct nand_chip *chip, const u8 *buf,
return ret;
}
+static int anfc_sel_write_page_hw_ecc(struct nand_chip *chip, const u8 *buf,
+ int oob_required, int page)
+{
+ int ret;
+
+ ret = anfc_select_target(chip, chip->cur_cs);
+ if (ret)
+ return ret;
+
+ return anfc_write_page_hw_ecc(chip, buf, oob_required, page);
+};
+
/* NAND framework ->exec_op() hooks and related helpers */
static int anfc_parse_instructions(struct nand_chip *chip,
const struct nand_subop *subop,
struct anfc_op *nfc_op)
{
+ struct arasan_nfc *nfc = to_anfc(chip->controller);
struct anand *anand = to_anand(chip);
const struct nand_op_instr *instr = NULL;
bool first_cmd = true;
@@ -473,7 +592,7 @@ static int anfc_parse_instructions(struct nand_chip *chip,
int ret, i;
memset(nfc_op, 0, sizeof(*nfc_op));
- nfc_op->addr2_reg = ADDR2_CS(anand->cs);
+ nfc_op->addr2_reg = ADDR2_CS(nfc->native_cs);
nfc_op->cmd_reg = CMD_PAGE_SIZE(anand->page_sz);
for (op_id = 0; op_id < subop->ninstrs; op_id++) {
@@ -622,7 +741,23 @@ static int anfc_param_read_type_exec(struct nand_chip *chip,
static int anfc_data_read_type_exec(struct nand_chip *chip,
const struct nand_subop *subop)
{
- return anfc_misc_data_type_exec(chip, subop, PROG_PGRD);
+ u32 prog_reg = PROG_PGRD;
+
+ /*
+ * Experience shows that while in SDR mode sending a CHANGE READ COLUMN
+ * command through the READ PAGE "type" always works fine, when in
+ * NV-DDR mode the same command simply fails. However, it was also
+ * spotted that any CHANGE READ COLUMN command sent through the CHANGE
+ * READ COLUMN ENHANCED "type" would correctly work in both cases (SDR
+ * and NV-DDR). So, for simplicity, let's program the controller with
+ * the CHANGE READ COLUMN ENHANCED "type" whenever we are requested to
+ * perform a CHANGE READ COLUMN operation.
+ */
+ if (subop->instrs[0].ctx.cmd.opcode == NAND_CMD_RNDOUT &&
+ subop->instrs[2].ctx.cmd.opcode == NAND_CMD_RNDOUTSTART)
+ prog_reg = PROG_CHG_RD_COL_ENH;
+
+ return anfc_misc_data_type_exec(chip, subop, prog_reg);
}
static int anfc_param_write_type_exec(struct nand_chip *chip,
@@ -753,37 +888,6 @@ static const struct nand_op_parser anfc_op_parser = NAND_OP_PARSER(
NAND_OP_PARSER_PAT_WAITRDY_ELEM(false)),
);
-static int anfc_select_target(struct nand_chip *chip, int target)
-{
- struct anand *anand = to_anand(chip);
- struct arasan_nfc *nfc = to_anfc(chip->controller);
- int ret;
-
- /* Update the controller timings and the potential ECC configuration */
- writel_relaxed(anand->timings, nfc->base + DATA_INTERFACE_REG);
-
- /* Update clock frequency */
- if (nfc->cur_clk != anand->clk) {
- clk_disable_unprepare(nfc->controller_clk);
- ret = clk_set_rate(nfc->controller_clk, anand->clk);
- if (ret) {
- dev_err(nfc->dev, "Failed to change clock rate\n");
- return ret;
- }
-
- ret = clk_prepare_enable(nfc->controller_clk);
- if (ret) {
- dev_err(nfc->dev,
- "Failed to re-enable the controller clock\n");
- return ret;
- }
-
- nfc->cur_clk = anand->clk;
- }
-
- return 0;
-}
-
static int anfc_check_op(struct nand_chip *chip,
const struct nand_operation *op)
{
@@ -861,21 +965,79 @@ static int anfc_setup_interface(struct nand_chip *chip, int target,
struct anand *anand = to_anand(chip);
struct arasan_nfc *nfc = to_anfc(chip->controller);
struct device_node *np = nfc->dev->of_node;
+ const struct nand_sdr_timings *sdr;
+ const struct nand_nvddr_timings *nvddr;
+ unsigned int tccs_min, dqs_mode, fast_tcad;
+
+ if (nand_interface_is_nvddr(conf)) {
+ nvddr = nand_get_nvddr_timings(conf);
+ if (IS_ERR(nvddr))
+ return PTR_ERR(nvddr);
+ } else {
+ sdr = nand_get_sdr_timings(conf);
+ if (IS_ERR(sdr))
+ return PTR_ERR(sdr);
+ }
if (target < 0)
return 0;
- anand->timings = DIFACE_SDR | DIFACE_SDR_MODE(conf->timings.mode);
+ if (nand_interface_is_sdr(conf)) {
+ anand->data_iface = DIFACE_SDR |
+ DIFACE_SDR_MODE(conf->timings.mode);
+ anand->timings = 0;
+ } else {
+ anand->data_iface = DIFACE_NVDDR |
+ DIFACE_DDR_MODE(conf->timings.mode);
+
+ if (conf->timings.nvddr.tCCS_min <= 100000)
+ tccs_min = TCCS_TIME_100NS;
+ else if (conf->timings.nvddr.tCCS_min <= 200000)
+ tccs_min = TCCS_TIME_200NS;
+ else if (conf->timings.nvddr.tCCS_min <= 300000)
+ tccs_min = TCCS_TIME_300NS;
+ else
+ tccs_min = TCCS_TIME_500NS;
+
+ fast_tcad = 0;
+ if (conf->timings.nvddr.tCAD_min < 45000)
+ fast_tcad = FAST_TCAD;
+
+ switch (conf->timings.mode) {
+ case 5:
+ case 4:
+ dqs_mode = 2;
+ break;
+ case 3:
+ dqs_mode = 3;
+ break;
+ case 2:
+ dqs_mode = 4;
+ break;
+ case 1:
+ dqs_mode = 5;
+ break;
+ case 0:
+ default:
+ dqs_mode = 6;
+ break;
+ }
+
+ anand->timings = tccs_min | fast_tcad |
+ DQS_BUFF_SEL_IN(dqs_mode) |
+ DQS_BUFF_SEL_OUT(dqs_mode);
+ }
+
anand->clk = ANFC_XLNX_SDR_DFLT_CORE_CLK;
/*
* Due to a hardware bug in the ZynqMP SoC, SDR timing modes 0-1 work
* with f > 90MHz (default clock is 100MHz) but signals are unstable
* with higher modes. Hence we decrease a little bit the clock rate to
- * 80MHz when using modes 2-5 with this SoC.
+ * 80MHz when using SDR modes 2-5 with this SoC.
*/
if (of_device_is_compatible(np, "xlnx,zynqmp-nand-controller") &&
- conf->timings.mode >= 2)
+ nand_interface_is_sdr(conf) && conf->timings.mode >= 2)
anand->clk = ANFC_XLNX_SDR_HS_CORE_CLK;
return 0;
@@ -1007,8 +1169,8 @@ static int anfc_init_hw_ecc_controller(struct arasan_nfc *nfc,
if (!anand->bch)
return -EINVAL;
- ecc->read_page = anfc_read_page_hw_ecc;
- ecc->write_page = anfc_write_page_hw_ecc;
+ ecc->read_page = anfc_sel_read_page_hw_ecc;
+ ecc->write_page = anfc_sel_write_page_hw_ecc;
return 0;
}
@@ -1094,37 +1256,43 @@ static int anfc_chip_init(struct arasan_nfc *nfc, struct device_node *np)
struct anand *anand;
struct nand_chip *chip;
struct mtd_info *mtd;
- int cs, rb, ret;
+ int rb, ret, i;
anand = devm_kzalloc(nfc->dev, sizeof(*anand), GFP_KERNEL);
if (!anand)
return -ENOMEM;
- /* We do not support multiple CS per chip yet */
- if (of_property_count_elems_of_size(np, "reg", sizeof(u32)) != 1) {
+ /* Chip-select init */
+ anand->ncs_idx = of_property_count_elems_of_size(np, "reg", sizeof(u32));
+ if (anand->ncs_idx <= 0 || anand->ncs_idx > nfc->ncs) {
dev_err(nfc->dev, "Invalid reg property\n");
return -EINVAL;
}
- ret = of_property_read_u32(np, "reg", &cs);
- if (ret)
- return ret;
+ anand->cs_idx = devm_kcalloc(nfc->dev, anand->ncs_idx,
+ sizeof(*anand->cs_idx), GFP_KERNEL);
+ if (!anand->cs_idx)
+ return -ENOMEM;
+ for (i = 0; i < anand->ncs_idx; i++) {
+ ret = of_property_read_u32_index(np, "reg", i,
+ &anand->cs_idx[i]);
+ if (ret) {
+ dev_err(nfc->dev, "invalid CS property: %d\n", ret);
+ return ret;
+ }
+ }
+
+ /* Ready-busy init */
ret = of_property_read_u32(np, "nand-rb", &rb);
if (ret)
return ret;
- if (cs >= ANFC_MAX_CS || rb >= ANFC_MAX_CS) {
- dev_err(nfc->dev, "Wrong CS %d or RB %d\n", cs, rb);
- return -EINVAL;
- }
-
- if (test_and_set_bit(cs, &nfc->assigned_cs)) {
- dev_err(nfc->dev, "Already assigned CS %d\n", cs);
+ if (rb >= ANFC_MAX_CS) {
+ dev_err(nfc->dev, "Wrong RB %d\n", rb);
return -EINVAL;
}
- anand->cs = cs;
anand->rb = rb;
chip = &anand->chip;
@@ -1140,7 +1308,7 @@ static int anfc_chip_init(struct arasan_nfc *nfc, struct device_node *np)
return -EINVAL;
}
- ret = nand_scan(chip, 1);
+ ret = nand_scan(chip, anand->ncs_idx);
if (ret) {
dev_err(nfc->dev, "Scan operation failed\n");
return ret;
@@ -1178,7 +1346,7 @@ static int anfc_chips_init(struct arasan_nfc *nfc)
int nchips = of_get_child_count(np);
int ret;
- if (!nchips || nchips > ANFC_MAX_CS) {
+ if (!nchips) {
dev_err(nfc->dev, "Incorrect number of NAND chips (%d)\n",
nchips);
return -EINVAL;
@@ -1203,6 +1371,47 @@ static void anfc_reset(struct arasan_nfc *nfc)
/* Enable interrupt status */
writel_relaxed(EVENT_MASK, nfc->base + INTR_STS_EN_REG);
+
+ nfc->cur_cs = -1;
+}
+
+static int anfc_parse_cs(struct arasan_nfc *nfc)
+{
+ int ret;
+
+ /* Check the gpio-cs property */
+ ret = rawnand_dt_parse_gpio_cs(nfc->dev, &nfc->cs_array, &nfc->ncs);
+ if (ret)
+ return ret;
+
+ /*
+ * The controller native CS cannot be both disabled at the same time.
+ * Hence, only one native CS can be used if GPIO CS are needed, so that
+ * the other is selected when a non-native CS must be asserted (not
+ * wired physically or configured as GPIO instead of NAND CS). In this
+ * case, the "not" chosen CS is assigned to nfc->spare_cs and selected
+ * whenever a GPIO CS must be asserted.
+ */
+ if (nfc->cs_array && nfc->ncs > 2) {
+ if (!nfc->cs_array[0] && !nfc->cs_array[1]) {
+ dev_err(nfc->dev,
+ "Assign a single native CS when using GPIOs\n");
+ return -EINVAL;
+ }
+
+ if (nfc->cs_array[0])
+ nfc->spare_cs = 0;
+ else
+ nfc->spare_cs = 1;
+ }
+
+ if (!nfc->cs_array) {
+ nfc->cs_array = anfc_default_cs_array;
+ nfc->ncs = ANFC_MAX_CS;
+ return 0;
+ }
+
+ return 0;
}
static int anfc_probe(struct platform_device *pdev)
@@ -1241,6 +1450,14 @@ static int anfc_probe(struct platform_device *pdev)
if (ret)
goto disable_controller_clk;
+ ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+ if (ret)
+ goto disable_bus_clk;
+
+ ret = anfc_parse_cs(nfc);
+ if (ret)
+ goto disable_bus_clk;
+
ret = anfc_chips_init(nfc);
if (ret)
goto disable_bus_clk;
diff --git a/drivers/mtd/nand/raw/atmel/nand-controller.c b/drivers/mtd/nand/raw/atmel/nand-controller.c
index 8aab1017b460..f3276ee9e4fe 100644
--- a/drivers/mtd/nand/raw/atmel/nand-controller.c
+++ b/drivers/mtd/nand/raw/atmel/nand-controller.c
@@ -1246,7 +1246,7 @@ static int atmel_smc_nand_prepare_smcconf(struct atmel_nand *nand,
nc = to_nand_controller(nand->base.controller);
/* DDR interface not supported. */
- if (conf->type != NAND_SDR_IFACE)
+ if (!nand_interface_is_sdr(conf))
return -ENOTSUPP;
/*
@@ -1524,8 +1524,13 @@ static int atmel_nand_setup_interface(struct nand_chip *chip, int csline,
const struct nand_interface_config *conf)
{
struct atmel_nand *nand = to_atmel_nand(chip);
+ const struct nand_sdr_timings *sdr;
struct atmel_nand_controller *nc;
+ sdr = nand_get_sdr_timings(conf);
+ if (IS_ERR(sdr))
+ return PTR_ERR(sdr);
+
nc = to_nand_controller(nand->base.controller);
if (csline >= nand->numcs ||
@@ -1629,10 +1634,8 @@ static struct atmel_nand *atmel_nand_create(struct atmel_nand_controller *nc,
}
nand = devm_kzalloc(nc->dev, struct_size(nand, cs, numcs), GFP_KERNEL);
- if (!nand) {
- dev_err(nc->dev, "Failed to allocate NAND object\n");
+ if (!nand)
return ERR_PTR(-ENOMEM);
- }
nand->numcs = numcs;
diff --git a/drivers/mtd/nand/raw/cadence-nand-controller.c b/drivers/mtd/nand/raw/cadence-nand-controller.c
index b46786cd53e0..7eec60ea9056 100644
--- a/drivers/mtd/nand/raw/cadence-nand-controller.c
+++ b/drivers/mtd/nand/raw/cadence-nand-controller.c
@@ -2348,9 +2348,9 @@ cadence_nand_setup_interface(struct nand_chip *chip, int chipnr,
* for tRP and tRH timings. If it is NOT possible to sample data
* with optimal tRP/tRH settings, the parameters will be extended.
* If clk_period is 50ns (the lowest value) this condition is met
- * for asynchronous timing modes 1, 2, 3, 4 and 5.
- * If clk_period is 20ns the condition is met only
- * for asynchronous timing mode 5.
+ * for SDR timing modes 1, 2, 3, 4 and 5.
+ * If clk_period is 20ns the condition is met only for SDR timing
+ * mode 5.
*/
if (sdr->tRC_min <= clk_period &&
sdr->tRP_min <= (clk_period / 2) &&
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
index fdc5ed7de083..5e1c3ddae5f8 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.h
@@ -79,7 +79,7 @@ enum gpmi_type {
struct gpmi_devdata {
enum gpmi_type type;
int bch_max_ecc_strength;
- int max_chain_delay; /* See the async EDO mode */
+ int max_chain_delay; /* See the SDR EDO mode */
const char * const *clks;
const int clks_count;
};
diff --git a/drivers/mtd/nand/raw/hisi504_nand.c b/drivers/mtd/nand/raw/hisi504_nand.c
index 8b2122ce6ec3..78c4e05434e2 100644
--- a/drivers/mtd/nand/raw/hisi504_nand.c
+++ b/drivers/mtd/nand/raw/hisi504_nand.c
@@ -761,10 +761,8 @@ static int hisi_nfc_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
host->mmio = devm_ioremap_resource(dev, res);
- if (IS_ERR(host->mmio)) {
- dev_err(dev, "devm_ioremap_resource[1] fail\n");
+ if (IS_ERR(host->mmio))
return PTR_ERR(host->mmio);
- }
mtd->name = "hisi_nand";
mtd->dev.parent = &pdev->dev;
diff --git a/drivers/mtd/nand/raw/internals.h b/drivers/mtd/nand/raw/internals.h
index 012876e14317..7016e0f38398 100644
--- a/drivers/mtd/nand/raw/internals.h
+++ b/drivers/mtd/nand/raw/internals.h
@@ -90,9 +90,14 @@ void onfi_fill_interface_config(struct nand_chip *chip,
unsigned int timing_mode);
unsigned int
onfi_find_closest_sdr_mode(const struct nand_sdr_timings *spec_timings);
+unsigned int
+onfi_find_closest_nvddr_mode(const struct nand_nvddr_timings *spec_timings);
int nand_choose_best_sdr_timings(struct nand_chip *chip,
struct nand_interface_config *iface,
struct nand_sdr_timings *spec_timings);
+int nand_choose_best_nvddr_timings(struct nand_chip *chip,
+ struct nand_interface_config *iface,
+ struct nand_nvddr_timings *spec_timings);
const struct nand_interface_config *nand_get_reset_interface_config(void);
int nand_get_features(struct nand_chip *chip, int addr, u8 *subfeature_param);
int nand_set_features(struct nand_chip *chip, int addr, u8 *subfeature_param);
diff --git a/drivers/mtd/nand/raw/marvell_nand.c b/drivers/mtd/nand/raw/marvell_nand.c
index 79da6b02e209..2455a581fd70 100644
--- a/drivers/mtd/nand/raw/marvell_nand.c
+++ b/drivers/mtd/nand/raw/marvell_nand.c
@@ -451,7 +451,7 @@ struct marvell_nfc_timings {
};
/**
- * Derives a duration in numbers of clock cycles.
+ * TO_CYCLES() - Derives a duration in numbers of clock cycles.
*
* @ps: Duration in pico-seconds
* @period_ns: Clock period in nano-seconds
@@ -3030,8 +3030,10 @@ static int __maybe_unused marvell_nfc_resume(struct device *dev)
return ret;
ret = clk_prepare_enable(nfc->reg_clk);
- if (ret < 0)
+ if (ret < 0) {
+ clk_disable_unprepare(nfc->core_clk);
return ret;
+ }
/*
* Reset nfc->selected_chip so the next command will cause the timing
diff --git a/drivers/mtd/nand/raw/mtk_ecc.c b/drivers/mtd/nand/raw/mtk_ecc.c
index 75f1fa3d4d35..c437d97debb8 100644
--- a/drivers/mtd/nand/raw/mtk_ecc.c
+++ b/drivers/mtd/nand/raw/mtk_ecc.c
@@ -515,10 +515,8 @@ static int mtk_ecc_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
ecc->regs = devm_ioremap_resource(dev, res);
- if (IS_ERR(ecc->regs)) {
- dev_err(dev, "failed to map regs: %ld\n", PTR_ERR(ecc->regs));
+ if (IS_ERR(ecc->regs))
return PTR_ERR(ecc->regs);
- }
ecc->clk = devm_clk_get(dev, NULL);
if (IS_ERR(ecc->clk)) {
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index fb072c444495..57a583149cc0 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -42,6 +42,7 @@
#include <linux/io.h>
#include <linux/mtd/partitions.h>
#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/gpio/consumer.h>
#include "internals.h"
@@ -647,7 +648,7 @@ static int nand_block_checkbad(struct nand_chip *chip, loff_t ofs, int allowbbt)
*/
int nand_soft_waitrdy(struct nand_chip *chip, unsigned long timeout_ms)
{
- const struct nand_sdr_timings *timings;
+ const struct nand_interface_config *conf;
u8 status = 0;
int ret;
@@ -655,8 +656,8 @@ int nand_soft_waitrdy(struct nand_chip *chip, unsigned long timeout_ms)
return -ENOTSUPP;
/* Wait tWB before polling the STATUS reg. */
- timings = nand_get_sdr_timings(nand_get_interface_config(chip));
- ndelay(PSEC_TO_NSEC(timings->tWB_max));
+ conf = nand_get_interface_config(chip);
+ ndelay(NAND_COMMON_TIMING_NS(conf, tWB_max));
ret = nand_status_op(chip, NULL);
if (ret)
@@ -832,7 +833,7 @@ static int nand_reset_interface(struct nand_chip *chip, int chipnr)
static int nand_setup_interface(struct nand_chip *chip, int chipnr)
{
const struct nand_controller_ops *ops = chip->controller->ops;
- u8 tmode_param[ONFI_SUBFEATURE_PARAM_LEN] = { };
+ u8 tmode_param[ONFI_SUBFEATURE_PARAM_LEN] = { }, request;
int ret;
if (!nand_controller_can_setup_interface(chip))
@@ -848,7 +849,12 @@ static int nand_setup_interface(struct nand_chip *chip, int chipnr)
if (!chip->best_interface_config)
return 0;
- tmode_param[0] = chip->best_interface_config->timings.mode;
+ request = chip->best_interface_config->timings.mode;
+ if (nand_interface_is_sdr(chip->best_interface_config))
+ request |= ONFI_DATA_INTERFACE_SDR;
+ else
+ request |= ONFI_DATA_INTERFACE_NVDDR;
+ tmode_param[0] = request;
/* Change the mode on the chip side (if supported by the NAND chip) */
if (nand_supports_set_features(chip, ONFI_FEATURE_ADDR_TIMING_MODE)) {
@@ -877,9 +883,13 @@ static int nand_setup_interface(struct nand_chip *chip, int chipnr)
if (ret)
goto err_reset_chip;
- if (tmode_param[0] != chip->best_interface_config->timings.mode) {
- pr_warn("timing mode %d not acknowledged by the NAND chip\n",
+ if (request != tmode_param[0]) {
+ pr_warn("%s timing mode %d not acknowledged by the NAND chip\n",
+ nand_interface_is_nvddr(chip->best_interface_config) ? "NV-DDR" : "SDR",
chip->best_interface_config->timings.mode);
+ pr_debug("NAND chip would work in %s timing mode %d\n",
+ tmode_param[0] & ONFI_DATA_INTERFACE_NVDDR ? "NV-DDR" : "SDR",
+ (unsigned int)ONFI_TIMING_MODE_PARAM(tmode_param[0]));
goto err_reset_chip;
}
@@ -935,7 +945,7 @@ int nand_choose_best_sdr_timings(struct nand_chip *chip,
/* Fallback to slower modes */
best_mode = iface->timings.mode;
} else if (chip->parameters.onfi) {
- best_mode = fls(chip->parameters.onfi->async_timing_mode) - 1;
+ best_mode = fls(chip->parameters.onfi->sdr_timing_modes) - 1;
}
for (mode = best_mode; mode >= 0; mode--) {
@@ -943,13 +953,87 @@ int nand_choose_best_sdr_timings(struct nand_chip *chip,
ret = ops->setup_interface(chip, NAND_DATA_IFACE_CHECK_ONLY,
iface);
- if (!ret)
+ if (!ret) {
+ chip->best_interface_config = iface;
break;
+ }
}
- chip->best_interface_config = iface;
+ return ret;
+}
- return 0;
+/**
+ * nand_choose_best_nvddr_timings - Pick up the best NVDDR timings that both the
+ * NAND controller and the NAND chip support
+ * @chip: the NAND chip
+ * @iface: the interface configuration (can eventually be updated)
+ * @spec_timings: specific timings, when not fitting the ONFI specification
+ *
+ * If specific timings are provided, use them. Otherwise, retrieve supported
+ * timing modes from ONFI information.
+ */
+int nand_choose_best_nvddr_timings(struct nand_chip *chip,
+ struct nand_interface_config *iface,
+ struct nand_nvddr_timings *spec_timings)
+{
+ const struct nand_controller_ops *ops = chip->controller->ops;
+ int best_mode = 0, mode, ret;
+
+ iface->type = NAND_NVDDR_IFACE;
+
+ if (spec_timings) {
+ iface->timings.nvddr = *spec_timings;
+ iface->timings.mode = onfi_find_closest_nvddr_mode(spec_timings);
+
+ /* Verify the controller supports the requested interface */
+ ret = ops->setup_interface(chip, NAND_DATA_IFACE_CHECK_ONLY,
+ iface);
+ if (!ret) {
+ chip->best_interface_config = iface;
+ return ret;
+ }
+
+ /* Fallback to slower modes */
+ best_mode = iface->timings.mode;
+ } else if (chip->parameters.onfi) {
+ best_mode = fls(chip->parameters.onfi->nvddr_timing_modes) - 1;
+ }
+
+ for (mode = best_mode; mode >= 0; mode--) {
+ onfi_fill_interface_config(chip, iface, NAND_NVDDR_IFACE, mode);
+
+ ret = ops->setup_interface(chip, NAND_DATA_IFACE_CHECK_ONLY,
+ iface);
+ if (!ret) {
+ chip->best_interface_config = iface;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+/**
+ * nand_choose_best_timings - Pick up the best NVDDR or SDR timings that both
+ * NAND controller and the NAND chip support
+ * @chip: the NAND chip
+ * @iface: the interface configuration (can eventually be updated)
+ *
+ * If specific timings are provided, use them. Otherwise, retrieve supported
+ * timing modes from ONFI information.
+ */
+static int nand_choose_best_timings(struct nand_chip *chip,
+ struct nand_interface_config *iface)
+{
+ int ret;
+
+ /* Try the fastest timings: NV-DDR */
+ ret = nand_choose_best_nvddr_timings(chip, iface, NULL);
+ if (!ret)
+ return 0;
+
+ /* Fallback to SDR timings otherwise */
+ return nand_choose_best_sdr_timings(chip, iface, NULL);
}
/**
@@ -980,7 +1064,7 @@ static int nand_choose_interface_config(struct nand_chip *chip)
if (chip->ops.choose_interface_config)
ret = chip->ops.choose_interface_config(chip, iface);
else
- ret = nand_choose_best_sdr_timings(chip, iface, NULL);
+ ret = nand_choose_best_timings(chip, iface);
if (ret)
kfree(iface);
@@ -1046,15 +1130,15 @@ static int nand_sp_exec_read_page_op(struct nand_chip *chip, unsigned int page,
unsigned int offset_in_page, void *buf,
unsigned int len)
{
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct mtd_info *mtd = nand_to_mtd(chip);
u8 addrs[4];
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_READ0, 0),
- NAND_OP_ADDR(3, addrs, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tR_max),
- PSEC_TO_NSEC(sdr->tRR_min)),
+ NAND_OP_ADDR(3, addrs, NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tR_max),
+ NAND_COMMON_TIMING_NS(conf, tRR_min)),
NAND_OP_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1089,15 +1173,15 @@ static int nand_lp_exec_read_page_op(struct nand_chip *chip, unsigned int page,
unsigned int offset_in_page, void *buf,
unsigned int len)
{
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
u8 addrs[5];
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_READ0, 0),
NAND_OP_ADDR(4, addrs, 0),
- NAND_OP_CMD(NAND_CMD_READSTART, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tR_max),
- PSEC_TO_NSEC(sdr->tRR_min)),
+ NAND_OP_CMD(NAND_CMD_READSTART, NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tR_max),
+ NAND_COMMON_TIMING_NS(conf, tRR_min)),
NAND_OP_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1186,13 +1270,14 @@ int nand_read_param_page_op(struct nand_chip *chip, u8 page, void *buf,
return -EINVAL;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_PARAM, 0),
- NAND_OP_ADDR(1, &page, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tR_max),
- PSEC_TO_NSEC(sdr->tRR_min)),
+ NAND_OP_ADDR(1, &page,
+ NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tR_max),
+ NAND_COMMON_TIMING_NS(conf, tRR_min)),
NAND_OP_8BIT_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1241,14 +1326,14 @@ int nand_change_read_column_op(struct nand_chip *chip,
return -ENOTSUPP;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
u8 addrs[2] = {};
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_RNDOUT, 0),
NAND_OP_ADDR(2, addrs, 0),
NAND_OP_CMD(NAND_CMD_RNDOUTSTART,
- PSEC_TO_NSEC(sdr->tCCS_min)),
+ NAND_COMMON_TIMING_NS(conf, tCCS_min)),
NAND_OP_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1316,8 +1401,8 @@ static int nand_exec_prog_page_op(struct nand_chip *chip, unsigned int page,
unsigned int offset_in_page, const void *buf,
unsigned int len, bool prog)
{
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct mtd_info *mtd = nand_to_mtd(chip);
u8 addrs[5] = {};
struct nand_op_instr instrs[] = {
@@ -1328,10 +1413,11 @@ static int nand_exec_prog_page_op(struct nand_chip *chip, unsigned int page,
*/
NAND_OP_CMD(NAND_CMD_READ0, 0),
NAND_OP_CMD(NAND_CMD_SEQIN, 0),
- NAND_OP_ADDR(0, addrs, PSEC_TO_NSEC(sdr->tADL_min)),
+ NAND_OP_ADDR(0, addrs, NAND_COMMON_TIMING_NS(conf, tADL_min)),
NAND_OP_DATA_OUT(len, buf, 0),
- NAND_OP_CMD(NAND_CMD_PAGEPROG, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tPROG_max), 0),
+ NAND_OP_CMD(NAND_CMD_PAGEPROG,
+ NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tPROG_max), 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
int naddrs = nand_fill_column_cycles(chip, addrs, offset_in_page);
@@ -1430,12 +1516,13 @@ int nand_prog_page_end_op(struct nand_chip *chip)
u8 status;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_PAGEPROG,
- PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tPROG_max), 0),
+ NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tPROG_max),
+ 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1548,12 +1635,12 @@ int nand_change_write_column_op(struct nand_chip *chip,
return -ENOTSUPP;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
u8 addrs[2];
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_RNDIN, 0),
- NAND_OP_ADDR(2, addrs, PSEC_TO_NSEC(sdr->tCCS_min)),
+ NAND_OP_ADDR(2, addrs, NAND_COMMON_TIMING_NS(conf, tCCS_min)),
NAND_OP_DATA_OUT(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1597,26 +1684,46 @@ int nand_readid_op(struct nand_chip *chip, u8 addr, void *buf,
unsigned int len)
{
unsigned int i;
- u8 *id = buf;
+ u8 *id = buf, *ddrbuf = NULL;
if (len && !buf)
return -EINVAL;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_READID, 0),
- NAND_OP_ADDR(1, &addr, PSEC_TO_NSEC(sdr->tADL_min)),
+ NAND_OP_ADDR(1, &addr,
+ NAND_COMMON_TIMING_NS(conf, tADL_min)),
NAND_OP_8BIT_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
+ int ret;
+
+ /* READ_ID data bytes are received twice in NV-DDR mode */
+ if (len && nand_interface_is_nvddr(conf)) {
+ ddrbuf = kzalloc(len * 2, GFP_KERNEL);
+ if (!ddrbuf)
+ return -ENOMEM;
+
+ instrs[2].ctx.data.len *= 2;
+ instrs[2].ctx.data.buf.in = ddrbuf;
+ }
/* Drop the DATA_IN instruction if len is set to 0. */
if (!len)
op.ninstrs--;
- return nand_exec_op(chip, &op);
+ ret = nand_exec_op(chip, &op);
+ if (!ret && len && nand_interface_is_nvddr(conf)) {
+ for (i = 0; i < len; i++)
+ id[i] = ddrbuf[i * 2];
+ }
+
+ kfree(ddrbuf);
+
+ return ret;
}
chip->legacy.cmdfunc(chip, NAND_CMD_READID, addr, -1);
@@ -1642,19 +1749,31 @@ EXPORT_SYMBOL_GPL(nand_readid_op);
int nand_status_op(struct nand_chip *chip, u8 *status)
{
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
+ u8 ddrstatus[2];
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_STATUS,
- PSEC_TO_NSEC(sdr->tADL_min)),
+ NAND_COMMON_TIMING_NS(conf, tADL_min)),
NAND_OP_8BIT_DATA_IN(1, status, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
+ int ret;
+
+ /* The status data byte will be received twice in NV-DDR mode */
+ if (status && nand_interface_is_nvddr(conf)) {
+ instrs[1].ctx.data.len *= 2;
+ instrs[1].ctx.data.buf.in = ddrstatus;
+ }
if (!status)
op.ninstrs--;
- return nand_exec_op(chip, &op);
+ ret = nand_exec_op(chip, &op);
+ if (!ret && status && nand_interface_is_nvddr(conf))
+ *status = ddrstatus[0];
+
+ return ret;
}
chip->legacy.cmdfunc(chip, NAND_CMD_STATUS, -1, -1);
@@ -1711,15 +1830,16 @@ int nand_erase_op(struct nand_chip *chip, unsigned int eraseblock)
u8 status;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
u8 addrs[3] = { page, page >> 8, page >> 16 };
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_ERASE1, 0),
NAND_OP_ADDR(2, addrs, 0),
NAND_OP_CMD(NAND_CMD_ERASE2,
- PSEC_TO_MSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tBERS_max), 0),
+ NAND_COMMON_TIMING_MS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tBERS_max),
+ 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1770,14 +1890,17 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature,
int i, ret;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_SET_FEATURES, 0),
- NAND_OP_ADDR(1, &feature, PSEC_TO_NSEC(sdr->tADL_min)),
+ NAND_OP_ADDR(1, &feature, NAND_COMMON_TIMING_NS(conf,
+ tADL_min)),
NAND_OP_8BIT_DATA_OUT(ONFI_SUBFEATURE_PARAM_LEN, data,
- PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tFEAT_max), 0),
+ NAND_COMMON_TIMING_NS(conf,
+ tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tFEAT_max),
+ 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1813,23 +1936,37 @@ static int nand_set_features_op(struct nand_chip *chip, u8 feature,
static int nand_get_features_op(struct nand_chip *chip, u8 feature,
void *data)
{
- u8 *params = data;
+ u8 *params = data, ddrbuf[ONFI_SUBFEATURE_PARAM_LEN * 2];
int i;
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_CMD(NAND_CMD_GET_FEATURES, 0),
- NAND_OP_ADDR(1, &feature, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tFEAT_max),
- PSEC_TO_NSEC(sdr->tRR_min)),
+ NAND_OP_ADDR(1, &feature,
+ NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tFEAT_max),
+ NAND_COMMON_TIMING_NS(conf, tRR_min)),
NAND_OP_8BIT_DATA_IN(ONFI_SUBFEATURE_PARAM_LEN,
data, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
+ int ret;
- return nand_exec_op(chip, &op);
+ /* GET_FEATURE data bytes are received twice in NV-DDR mode */
+ if (nand_interface_is_nvddr(conf)) {
+ instrs[3].ctx.data.len *= 2;
+ instrs[3].ctx.data.buf.in = ddrbuf;
+ }
+
+ ret = nand_exec_op(chip, &op);
+ if (nand_interface_is_nvddr(conf)) {
+ for (i = 0; i < ONFI_SUBFEATURE_PARAM_LEN; i++)
+ params[i] = ddrbuf[i * 2];
+ }
+
+ return ret;
}
chip->legacy.cmdfunc(chip, NAND_CMD_GET_FEATURES, feature, -1);
@@ -1874,11 +2011,13 @@ static int nand_wait_rdy_op(struct nand_chip *chip, unsigned int timeout_ms,
int nand_reset_op(struct nand_chip *chip)
{
if (nand_has_exec_op(chip)) {
- const struct nand_sdr_timings *sdr =
- nand_get_sdr_timings(nand_get_interface_config(chip));
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
- NAND_OP_CMD(NAND_CMD_RESET, PSEC_TO_NSEC(sdr->tWB_max)),
- NAND_OP_WAIT_RDY(PSEC_TO_MSEC(sdr->tRST_max), 0),
+ NAND_OP_CMD(NAND_CMD_RESET,
+ NAND_COMMON_TIMING_NS(conf, tWB_max)),
+ NAND_OP_WAIT_RDY(NAND_COMMON_TIMING_MS(conf, tRST_max),
+ 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
@@ -1913,17 +2052,50 @@ int nand_read_data_op(struct nand_chip *chip, void *buf, unsigned int len,
return -EINVAL;
if (nand_has_exec_op(chip)) {
+ const struct nand_interface_config *conf =
+ nand_get_interface_config(chip);
struct nand_op_instr instrs[] = {
NAND_OP_DATA_IN(len, buf, 0),
};
struct nand_operation op = NAND_OPERATION(chip->cur_cs, instrs);
+ u8 *ddrbuf = NULL;
+ int ret, i;
instrs[0].ctx.data.force_8bit = force_8bit;
- if (check_only)
- return nand_check_op(chip, &op);
+ /*
+ * Parameter payloads (ID, status, features, etc) do not go
+ * through the same pipeline as regular data, hence the
+ * force_8bit flag must be set and this also indicates that in
+ * case NV-DDR timings are being used the data will be received
+ * twice.
+ */
+ if (force_8bit && nand_interface_is_nvddr(conf)) {
+ ddrbuf = kzalloc(len * 2, GFP_KERNEL);
+ if (!ddrbuf)
+ return -ENOMEM;
- return nand_exec_op(chip, &op);
+ instrs[0].ctx.data.len *= 2;
+ instrs[0].ctx.data.buf.in = ddrbuf;
+ }
+
+ if (check_only) {
+ ret = nand_check_op(chip, &op);
+ kfree(ddrbuf);
+ return ret;
+ }
+
+ ret = nand_exec_op(chip, &op);
+ if (!ret && force_8bit && nand_interface_is_nvddr(conf)) {
+ u8 *dst = buf;
+
+ for (i = 0; i < len; i++)
+ dst[i] = ddrbuf[i * 2];
+ }
+
+ kfree(ddrbuf);
+
+ return ret;
}
if (check_only)
@@ -3136,13 +3308,13 @@ static int nand_setup_read_retry(struct nand_chip *chip, int retry_mode)
static void nand_wait_readrdy(struct nand_chip *chip)
{
- const struct nand_sdr_timings *sdr;
+ const struct nand_interface_config *conf;
if (!(chip->options & NAND_NEED_READRDY))
return;
- sdr = nand_get_sdr_timings(nand_get_interface_config(chip));
- WARN_ON(nand_wait_rdy_op(chip, PSEC_TO_MSEC(sdr->tR_max), 0));
+ conf = nand_get_interface_config(chip);
+ WARN_ON(nand_wait_rdy_op(chip, NAND_COMMON_TIMING_MS(conf, tR_max), 0));
}
/**
@@ -5078,6 +5250,44 @@ static int of_get_nand_secure_regions(struct nand_chip *chip)
return 0;
}
+/**
+ * rawnand_dt_parse_gpio_cs - Parse the gpio-cs property of a controller
+ * @dev: Device that will be parsed. Also used for managed allocations.
+ * @cs_array: Array of GPIO desc pointers allocated on success
+ * @ncs_array: Number of entries in @cs_array updated on success.
+ * @return 0 on success, an error otherwise.
+ */
+int rawnand_dt_parse_gpio_cs(struct device *dev, struct gpio_desc ***cs_array,
+ unsigned int *ncs_array)
+{
+ struct device_node *np = dev->of_node;
+ struct gpio_desc **descs;
+ int ndescs, i;
+
+ ndescs = of_gpio_named_count(np, "cs-gpios");
+ if (ndescs < 0) {
+ dev_dbg(dev, "No valid cs-gpios property\n");
+ return 0;
+ }
+
+ descs = devm_kcalloc(dev, ndescs, sizeof(*descs), GFP_KERNEL);
+ if (!descs)
+ return -ENOMEM;
+
+ for (i = 0; i < ndescs; i++) {
+ descs[i] = gpiod_get_index_optional(dev, "cs", i,
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(descs[i]))
+ return PTR_ERR(descs[i]);
+ }
+
+ *ncs_array = ndescs;
+ *cs_array = descs;
+
+ return 0;
+}
+EXPORT_SYMBOL(rawnand_dt_parse_gpio_cs);
+
static int rawnand_dt_init(struct nand_chip *chip)
{
struct nand_device *nand = mtd_to_nanddev(nand_to_mtd(chip));
diff --git a/drivers/mtd/nand/raw/nand_legacy.c b/drivers/mtd/nand/raw/nand_legacy.c
index eccc18b266d5..743792edf98d 100644
--- a/drivers/mtd/nand/raw/nand_legacy.c
+++ b/drivers/mtd/nand/raw/nand_legacy.c
@@ -369,7 +369,7 @@ static void nand_ccs_delay(struct nand_chip *chip)
* Wait tCCS_min if it is correctly defined, otherwise wait 500ns
* (which should be safe for all NANDs).
*/
- if (nand_controller_can_setup_interface(chip))
+ if (!IS_ERR(sdr) && nand_controller_can_setup_interface(chip))
ndelay(sdr->tCCS_min / 1000);
else
ndelay(500);
diff --git a/drivers/mtd/nand/raw/nand_onfi.c b/drivers/mtd/nand/raw/nand_onfi.c
index 45649e03797d..7586befce7f9 100644
--- a/drivers/mtd/nand/raw/nand_onfi.c
+++ b/drivers/mtd/nand/raw/nand_onfi.c
@@ -315,7 +315,10 @@ int nand_onfi_detect(struct nand_chip *chip)
onfi->tBERS = le16_to_cpu(p->t_bers);
onfi->tR = le16_to_cpu(p->t_r);
onfi->tCCS = le16_to_cpu(p->t_ccs);
- onfi->async_timing_mode = le16_to_cpu(p->async_timing_mode);
+ onfi->fast_tCAD = le16_to_cpu(p->nvddr_nvddr2_features) & BIT(0);
+ onfi->sdr_timing_modes = le16_to_cpu(p->sdr_timing_modes);
+ if (le16_to_cpu(p->features) & ONFI_FEATURE_NV_DDR)
+ onfi->nvddr_timing_modes = le16_to_cpu(p->nvddr_timing_modes);
onfi->vendor_revision = le16_to_cpu(p->vendor_revision);
memcpy(onfi->vendor, p->vendor, sizeof(p->vendor));
chip->parameters.onfi = onfi;
diff --git a/drivers/mtd/nand/raw/nand_timings.c b/drivers/mtd/nand/raw/nand_timings.c
index 94d832646487..7b41afc372d2 100644
--- a/drivers/mtd/nand/raw/nand_timings.c
+++ b/drivers/mtd/nand/raw/nand_timings.c
@@ -292,6 +292,261 @@ static const struct nand_interface_config onfi_sdr_timings[] = {
},
};
+static const struct nand_interface_config onfi_nvddr_timings[] = {
+ /* Mode 0 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 0,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 10000,
+ .tCALH_min = 10000,
+ .tCALS_min = 10000,
+ .tCAS_min = 10000,
+ .tCEH_min = 20000,
+ .tCH_min = 10000,
+ .tCK_min = 50000,
+ .tCS_min = 35000,
+ .tDH_min = 5000,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 5000,
+ .tDS_min = 5000,
+ .tDSC_min = 50000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 6000,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+ /* Mode 1 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 1,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 5000,
+ .tCALH_min = 5000,
+ .tCALS_min = 5000,
+ .tCAS_min = 5000,
+ .tCEH_min = 20000,
+ .tCH_min = 5000,
+ .tCK_min = 30000,
+ .tCS_min = 25000,
+ .tDH_min = 2500,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 2500,
+ .tDS_min = 3000,
+ .tDSC_min = 30000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 3000,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+ /* Mode 2 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 2,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 4000,
+ .tCALH_min = 4000,
+ .tCALS_min = 4000,
+ .tCAS_min = 4000,
+ .tCEH_min = 20000,
+ .tCH_min = 4000,
+ .tCK_min = 20000,
+ .tCS_min = 15000,
+ .tDH_min = 1700,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 1700,
+ .tDS_min = 2000,
+ .tDSC_min = 20000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 2000,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+ /* Mode 3 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 3,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 3000,
+ .tCALH_min = 3000,
+ .tCALS_min = 3000,
+ .tCAS_min = 3000,
+ .tCEH_min = 20000,
+ .tCH_min = 3000,
+ .tCK_min = 15000,
+ .tCS_min = 15000,
+ .tDH_min = 1300,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 1300,
+ .tDS_min = 1500,
+ .tDSC_min = 15000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 1500,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+ /* Mode 4 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 4,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 2500,
+ .tCALH_min = 2500,
+ .tCALS_min = 2500,
+ .tCAS_min = 2500,
+ .tCEH_min = 20000,
+ .tCH_min = 2500,
+ .tCK_min = 12000,
+ .tCS_min = 15000,
+ .tDH_min = 1100,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 1000,
+ .tDS_min = 1100,
+ .tDSC_min = 12000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 1200,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+ /* Mode 5 */
+ {
+ .type = NAND_NVDDR_IFACE,
+ .timings.mode = 5,
+ .timings.nvddr = {
+ .tCCS_min = 500000,
+ .tR_max = 200000000,
+ .tPROG_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tBERS_max = 1000000ULL * ONFI_DYN_TIMING_MAX,
+ .tAC_min = 3000,
+ .tAC_max = 25000,
+ .tADL_min = 400000,
+ .tCAD_min = 45000,
+ .tCAH_min = 2000,
+ .tCALH_min = 2000,
+ .tCALS_min = 2000,
+ .tCAS_min = 2000,
+ .tCEH_min = 20000,
+ .tCH_min = 2000,
+ .tCK_min = 10000,
+ .tCS_min = 15000,
+ .tDH_min = 900,
+ .tDQSCK_min = 3000,
+ .tDQSCK_max = 25000,
+ .tDQSD_min = 0,
+ .tDQSD_max = 18000,
+ .tDQSHZ_max = 20000,
+ .tDQSQ_max = 850,
+ .tDS_min = 900,
+ .tDSC_min = 10000,
+ .tFEAT_max = 1000000,
+ .tITC_max = 1000000,
+ .tQHS_max = 1000,
+ .tRHW_min = 100000,
+ .tRR_min = 20000,
+ .tRST_max = 500000000,
+ .tWB_max = 100000,
+ .tWHR_min = 80000,
+ .tWRCK_min = 20000,
+ .tWW_min = 100000,
+ },
+ },
+};
+
/* All NAND chips share the same reset data interface: SDR mode 0 */
const struct nand_interface_config *nand_get_reset_interface_config(void)
{
@@ -346,23 +601,60 @@ onfi_find_closest_sdr_mode(const struct nand_sdr_timings *spec_timings)
}
/**
- * onfi_fill_interface_config - Initialize an interface config from a given
- * ONFI mode
+ * onfi_find_closest_nvddr_mode - Derive the closest ONFI NVDDR timing mode
+ * given a set of timings
+ * @spec_timings: the timings to challenge
+ */
+unsigned int
+onfi_find_closest_nvddr_mode(const struct nand_nvddr_timings *spec_timings)
+{
+ const struct nand_nvddr_timings *onfi_timings;
+ int mode;
+
+ for (mode = ARRAY_SIZE(onfi_nvddr_timings) - 1; mode > 0; mode--) {
+ onfi_timings = &onfi_nvddr_timings[mode].timings.nvddr;
+
+ if (spec_timings->tCCS_min <= onfi_timings->tCCS_min &&
+ spec_timings->tAC_min <= onfi_timings->tAC_min &&
+ spec_timings->tADL_min <= onfi_timings->tADL_min &&
+ spec_timings->tCAD_min <= onfi_timings->tCAD_min &&
+ spec_timings->tCAH_min <= onfi_timings->tCAH_min &&
+ spec_timings->tCALH_min <= onfi_timings->tCALH_min &&
+ spec_timings->tCALS_min <= onfi_timings->tCALS_min &&
+ spec_timings->tCAS_min <= onfi_timings->tCAS_min &&
+ spec_timings->tCEH_min <= onfi_timings->tCEH_min &&
+ spec_timings->tCH_min <= onfi_timings->tCH_min &&
+ spec_timings->tCK_min <= onfi_timings->tCK_min &&
+ spec_timings->tCS_min <= onfi_timings->tCS_min &&
+ spec_timings->tDH_min <= onfi_timings->tDH_min &&
+ spec_timings->tDQSCK_min <= onfi_timings->tDQSCK_min &&
+ spec_timings->tDQSD_min <= onfi_timings->tDQSD_min &&
+ spec_timings->tDS_min <= onfi_timings->tDS_min &&
+ spec_timings->tDSC_min <= onfi_timings->tDSC_min &&
+ spec_timings->tRHW_min <= onfi_timings->tRHW_min &&
+ spec_timings->tRR_min <= onfi_timings->tRR_min &&
+ spec_timings->tWHR_min <= onfi_timings->tWHR_min &&
+ spec_timings->tWRCK_min <= onfi_timings->tWRCK_min &&
+ spec_timings->tWW_min <= onfi_timings->tWW_min)
+ return mode;
+ }
+
+ return 0;
+}
+
+/*
+ * onfi_fill_sdr_interface_config - Initialize a SDR interface config from a
+ * given ONFI mode
* @chip: The NAND chip
* @iface: The interface configuration to fill
- * @type: The interface type
* @timing_mode: The ONFI timing mode
*/
-void onfi_fill_interface_config(struct nand_chip *chip,
- struct nand_interface_config *iface,
- enum nand_interface_type type,
- unsigned int timing_mode)
+static void onfi_fill_sdr_interface_config(struct nand_chip *chip,
+ struct nand_interface_config *iface,
+ unsigned int timing_mode)
{
struct onfi_params *onfi = chip->parameters.onfi;
- if (WARN_ON(type != NAND_SDR_IFACE))
- return;
-
if (WARN_ON(timing_mode >= ARRAY_SIZE(onfi_sdr_timings)))
return;
@@ -385,3 +677,61 @@ void onfi_fill_interface_config(struct nand_chip *chip,
timings->tCCS_min = 1000UL * onfi->tCCS;
}
}
+
+/**
+ * onfi_fill_nvddr_interface_config - Initialize a NVDDR interface config from a
+ * given ONFI mode
+ * @chip: The NAND chip
+ * @iface: The interface configuration to fill
+ * @timing_mode: The ONFI timing mode
+ */
+static void onfi_fill_nvddr_interface_config(struct nand_chip *chip,
+ struct nand_interface_config *iface,
+ unsigned int timing_mode)
+{
+ struct onfi_params *onfi = chip->parameters.onfi;
+
+ if (WARN_ON(timing_mode >= ARRAY_SIZE(onfi_nvddr_timings)))
+ return;
+
+ *iface = onfi_nvddr_timings[timing_mode];
+
+ /*
+ * Initialize timings that cannot be deduced from timing mode:
+ * tPROG, tBERS, tR, tCCS and tCAD.
+ * These information are part of the ONFI parameter page.
+ */
+ if (onfi) {
+ struct nand_nvddr_timings *timings = &iface->timings.nvddr;
+
+ /* microseconds -> picoseconds */
+ timings->tPROG_max = 1000000ULL * onfi->tPROG;
+ timings->tBERS_max = 1000000ULL * onfi->tBERS;
+ timings->tR_max = 1000000ULL * onfi->tR;
+
+ /* nanoseconds -> picoseconds */
+ timings->tCCS_min = 1000UL * onfi->tCCS;
+
+ if (onfi->fast_tCAD)
+ timings->tCAD_min = 25000;
+ }
+}
+
+/**
+ * onfi_fill_interface_config - Initialize an interface config from a given
+ * ONFI mode
+ * @chip: The NAND chip
+ * @iface: The interface configuration to fill
+ * @type: The interface type
+ * @timing_mode: The ONFI timing mode
+ */
+void onfi_fill_interface_config(struct nand_chip *chip,
+ struct nand_interface_config *iface,
+ enum nand_interface_type type,
+ unsigned int timing_mode)
+{
+ if (type == NAND_SDR_IFACE)
+ return onfi_fill_sdr_interface_config(chip, iface, timing_mode);
+ else
+ return onfi_fill_nvddr_interface_config(chip, iface, timing_mode);
+}
diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c
index c75e7a0b101f..b1839eef5b65 100644
--- a/drivers/mtd/nand/raw/omap2.c
+++ b/drivers/mtd/nand/raw/omap2.c
@@ -131,7 +131,7 @@
#define BCH_ECC_SIZE0 0x0 /* ecc_size0 = 0, no oob protection */
#define BCH_ECC_SIZE1 0x20 /* ecc_size1 = 32 */
-#define BADBLOCK_MARKER_LENGTH 2
+#define BBM_LEN 2
static u_char bch16_vector[] = {0xf5, 0x24, 0x1c, 0xd0, 0x61, 0xb3, 0xf1, 0x55,
0x2e, 0x2c, 0x86, 0xa3, 0xed, 0x36, 0x1b, 0x78,
@@ -171,6 +171,10 @@ struct omap_nand_info {
struct device *elm_dev;
/* NAND ready gpio */
struct gpio_desc *ready_gpiod;
+ unsigned int neccpg;
+ unsigned int nsteps_per_eccpg;
+ unsigned int eccpg_size;
+ unsigned int eccpg_bytes;
};
static inline struct omap_nand_info *mtd_to_omap(struct mtd_info *mtd)
@@ -1355,7 +1359,7 @@ static int omap_elm_correct_data(struct nand_chip *chip, u_char *data,
{
struct omap_nand_info *info = mtd_to_omap(nand_to_mtd(chip));
struct nand_ecc_ctrl *ecc = &info->nand.ecc;
- int eccsteps = info->nand.ecc.steps;
+ int eccsteps = info->nsteps_per_eccpg;
int i , j, stat = 0;
int eccflag, actual_eccbytes;
struct elm_errorvec err_vec[ERROR_VECTOR_MAX];
@@ -1525,24 +1529,37 @@ static int omap_write_page_bch(struct nand_chip *chip, const uint8_t *buf,
int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
- int ret;
+ struct omap_nand_info *info = mtd_to_omap(mtd);
uint8_t *ecc_calc = chip->ecc.calc_buf;
+ unsigned int eccpg;
+ int ret;
- nand_prog_page_begin_op(chip, page, 0, NULL, 0);
+ ret = nand_prog_page_begin_op(chip, page, 0, NULL, 0);
+ if (ret)
+ return ret;
- /* Enable GPMC ecc engine */
- chip->ecc.hwctl(chip, NAND_ECC_WRITE);
+ for (eccpg = 0; eccpg < info->neccpg; eccpg++) {
+ /* Enable GPMC ecc engine */
+ chip->ecc.hwctl(chip, NAND_ECC_WRITE);
- /* Write data */
- chip->legacy.write_buf(chip, buf, mtd->writesize);
+ /* Write data */
+ chip->legacy.write_buf(chip, buf + (eccpg * info->eccpg_size),
+ info->eccpg_size);
- /* Update ecc vector from GPMC result registers */
- omap_calculate_ecc_bch_multi(mtd, buf, &ecc_calc[0]);
+ /* Update ecc vector from GPMC result registers */
+ ret = omap_calculate_ecc_bch_multi(mtd,
+ buf + (eccpg * info->eccpg_size),
+ ecc_calc);
+ if (ret)
+ return ret;
- ret = mtd_ooblayout_set_eccbytes(mtd, ecc_calc, chip->oob_poi, 0,
- chip->ecc.total);
- if (ret)
- return ret;
+ ret = mtd_ooblayout_set_eccbytes(mtd, ecc_calc,
+ chip->oob_poi,
+ eccpg * info->eccpg_bytes,
+ info->eccpg_bytes);
+ if (ret)
+ return ret;
+ }
/* Write ecc vector to OOB area */
chip->legacy.write_buf(chip, chip->oob_poi, mtd->oobsize);
@@ -1566,12 +1583,13 @@ static int omap_write_subpage_bch(struct nand_chip *chip, u32 offset,
int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
+ struct omap_nand_info *info = mtd_to_omap(mtd);
u8 *ecc_calc = chip->ecc.calc_buf;
int ecc_size = chip->ecc.size;
int ecc_bytes = chip->ecc.bytes;
- int ecc_steps = chip->ecc.steps;
u32 start_step = offset / ecc_size;
u32 end_step = (offset + data_len - 1) / ecc_size;
+ unsigned int eccpg;
int step, ret = 0;
/*
@@ -1580,36 +1598,48 @@ static int omap_write_subpage_bch(struct nand_chip *chip, u32 offset,
* ECC is calculated for all subpages but we choose
* only what we want.
*/
- nand_prog_page_begin_op(chip, page, 0, NULL, 0);
-
- /* Enable GPMC ECC engine */
- chip->ecc.hwctl(chip, NAND_ECC_WRITE);
-
- /* Write data */
- chip->legacy.write_buf(chip, buf, mtd->writesize);
+ ret = nand_prog_page_begin_op(chip, page, 0, NULL, 0);
+ if (ret)
+ return ret;
- for (step = 0; step < ecc_steps; step++) {
- /* mask ECC of un-touched subpages by padding 0xFF */
- if (step < start_step || step > end_step)
- memset(ecc_calc, 0xff, ecc_bytes);
- else
- ret = _omap_calculate_ecc_bch(mtd, buf, ecc_calc, step);
+ for (eccpg = 0; eccpg < info->neccpg; eccpg++) {
+ /* Enable GPMC ECC engine */
+ chip->ecc.hwctl(chip, NAND_ECC_WRITE);
+
+ /* Write data */
+ chip->legacy.write_buf(chip, buf + (eccpg * info->eccpg_size),
+ info->eccpg_size);
+
+ for (step = 0; step < info->nsteps_per_eccpg; step++) {
+ unsigned int base_step = eccpg * info->nsteps_per_eccpg;
+ const u8 *bufoffs = buf + (eccpg * info->eccpg_size);
+
+ /* Mask ECC of un-touched subpages with 0xFFs */
+ if ((step + base_step) < start_step ||
+ (step + base_step) > end_step)
+ memset(ecc_calc + (step * ecc_bytes), 0xff,
+ ecc_bytes);
+ else
+ ret = _omap_calculate_ecc_bch(mtd,
+ bufoffs + (step * ecc_size),
+ ecc_calc + (step * ecc_bytes),
+ step);
+
+ if (ret)
+ return ret;
+ }
+ /*
+ * Copy the calculated ECC for the whole page including the
+ * masked values (0xFF) corresponding to unwritten subpages.
+ */
+ ret = mtd_ooblayout_set_eccbytes(mtd, ecc_calc, chip->oob_poi,
+ eccpg * info->eccpg_bytes,
+ info->eccpg_bytes);
if (ret)
return ret;
-
- buf += ecc_size;
- ecc_calc += ecc_bytes;
}
- /* copy calculated ECC for whole page to chip->buffer->oob */
- /* this include masked-value(0xFF) for unwritten subpages */
- ecc_calc = chip->ecc.calc_buf;
- ret = mtd_ooblayout_set_eccbytes(mtd, ecc_calc, chip->oob_poi, 0,
- chip->ecc.total);
- if (ret)
- return ret;
-
/* write OOB buffer to NAND device */
chip->legacy.write_buf(chip, chip->oob_poi, mtd->oobsize);
@@ -1634,40 +1664,60 @@ static int omap_read_page_bch(struct nand_chip *chip, uint8_t *buf,
int oob_required, int page)
{
struct mtd_info *mtd = nand_to_mtd(chip);
+ struct omap_nand_info *info = mtd_to_omap(mtd);
uint8_t *ecc_calc = chip->ecc.calc_buf;
uint8_t *ecc_code = chip->ecc.code_buf;
+ unsigned int max_bitflips = 0, eccpg;
int stat, ret;
- unsigned int max_bitflips = 0;
-
- nand_read_page_op(chip, page, 0, NULL, 0);
- /* Enable GPMC ecc engine */
- chip->ecc.hwctl(chip, NAND_ECC_READ);
+ ret = nand_read_page_op(chip, page, 0, NULL, 0);
+ if (ret)
+ return ret;
- /* Read data */
- chip->legacy.read_buf(chip, buf, mtd->writesize);
+ for (eccpg = 0; eccpg < info->neccpg; eccpg++) {
+ /* Enable GPMC ecc engine */
+ chip->ecc.hwctl(chip, NAND_ECC_READ);
- /* Read oob bytes */
- nand_change_read_column_op(chip,
- mtd->writesize + BADBLOCK_MARKER_LENGTH,
- chip->oob_poi + BADBLOCK_MARKER_LENGTH,
- chip->ecc.total, false);
+ /* Read data */
+ ret = nand_change_read_column_op(chip, eccpg * info->eccpg_size,
+ buf + (eccpg * info->eccpg_size),
+ info->eccpg_size, false);
+ if (ret)
+ return ret;
- /* Calculate ecc bytes */
- omap_calculate_ecc_bch_multi(mtd, buf, ecc_calc);
+ /* Read oob bytes */
+ ret = nand_change_read_column_op(chip,
+ mtd->writesize + BBM_LEN +
+ (eccpg * info->eccpg_bytes),
+ chip->oob_poi + BBM_LEN +
+ (eccpg * info->eccpg_bytes),
+ info->eccpg_bytes, false);
+ if (ret)
+ return ret;
- ret = mtd_ooblayout_get_eccbytes(mtd, ecc_code, chip->oob_poi, 0,
- chip->ecc.total);
- if (ret)
- return ret;
+ /* Calculate ecc bytes */
+ ret = omap_calculate_ecc_bch_multi(mtd,
+ buf + (eccpg * info->eccpg_size),
+ ecc_calc);
+ if (ret)
+ return ret;
- stat = chip->ecc.correct(chip, buf, ecc_code, ecc_calc);
+ ret = mtd_ooblayout_get_eccbytes(mtd, ecc_code,
+ chip->oob_poi,
+ eccpg * info->eccpg_bytes,
+ info->eccpg_bytes);
+ if (ret)
+ return ret;
- if (stat < 0) {
- mtd->ecc_stats.failed++;
- } else {
- mtd->ecc_stats.corrected += stat;
- max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ stat = chip->ecc.correct(chip,
+ buf + (eccpg * info->eccpg_size),
+ ecc_code, ecc_calc);
+ if (stat < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+ mtd->ecc_stats.corrected += stat;
+ max_bitflips = max_t(unsigned int, max_bitflips, stat);
+ }
}
return max_bitflips;
@@ -1820,7 +1870,7 @@ static int omap_ooblayout_ecc(struct mtd_info *mtd, int section,
{
struct omap_nand_info *info = mtd_to_omap(mtd);
struct nand_chip *chip = &info->nand;
- int off = BADBLOCK_MARKER_LENGTH;
+ int off = BBM_LEN;
if (info->ecc_opt == OMAP_ECC_HAM1_CODE_HW &&
!(chip->options & NAND_BUSWIDTH_16))
@@ -1840,7 +1890,7 @@ static int omap_ooblayout_free(struct mtd_info *mtd, int section,
{
struct omap_nand_info *info = mtd_to_omap(mtd);
struct nand_chip *chip = &info->nand;
- int off = BADBLOCK_MARKER_LENGTH;
+ int off = BBM_LEN;
if (info->ecc_opt == OMAP_ECC_HAM1_CODE_HW &&
!(chip->options & NAND_BUSWIDTH_16))
@@ -1870,7 +1920,7 @@ static int omap_sw_ooblayout_ecc(struct mtd_info *mtd, int section,
struct nand_device *nand = mtd_to_nanddev(mtd);
unsigned int nsteps = nanddev_get_ecc_nsteps(nand);
unsigned int ecc_bytes = nanddev_get_ecc_bytes_per_step(nand);
- int off = BADBLOCK_MARKER_LENGTH;
+ int off = BBM_LEN;
if (section >= nsteps)
return -ERANGE;
@@ -1891,7 +1941,7 @@ static int omap_sw_ooblayout_free(struct mtd_info *mtd, int section,
struct nand_device *nand = mtd_to_nanddev(mtd);
unsigned int nsteps = nanddev_get_ecc_nsteps(nand);
unsigned int ecc_bytes = nanddev_get_ecc_bytes_per_step(nand);
- int off = BADBLOCK_MARKER_LENGTH;
+ int off = BBM_LEN;
if (section)
return -ERANGE;
@@ -1920,7 +1970,8 @@ static int omap_nand_attach_chip(struct nand_chip *chip)
struct mtd_info *mtd = nand_to_mtd(chip);
struct omap_nand_info *info = mtd_to_omap(mtd);
struct device *dev = &info->pdev->dev;
- int min_oobbytes = BADBLOCK_MARKER_LENGTH;
+ int min_oobbytes = BBM_LEN;
+ int elm_bch_strength = -1;
int oobbytes_per_step;
dma_cap_mask_t mask;
int err;
@@ -2074,12 +2125,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip)
chip->ecc.write_subpage = omap_write_subpage_bch;
mtd_set_ooblayout(mtd, &omap_ooblayout_ops);
oobbytes_per_step = chip->ecc.bytes;
-
- err = elm_config(info->elm_dev, BCH4_ECC,
- mtd->writesize / chip->ecc.size,
- chip->ecc.size, chip->ecc.bytes);
- if (err < 0)
- return err;
+ elm_bch_strength = BCH4_ECC;
break;
case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW:
@@ -2116,13 +2162,7 @@ static int omap_nand_attach_chip(struct nand_chip *chip)
chip->ecc.write_subpage = omap_write_subpage_bch;
mtd_set_ooblayout(mtd, &omap_ooblayout_ops);
oobbytes_per_step = chip->ecc.bytes;
-
- err = elm_config(info->elm_dev, BCH8_ECC,
- mtd->writesize / chip->ecc.size,
- chip->ecc.size, chip->ecc.bytes);
- if (err < 0)
- return err;
-
+ elm_bch_strength = BCH8_ECC;
break;
case OMAP_ECC_BCH16_CODE_HW:
@@ -2138,19 +2178,32 @@ static int omap_nand_attach_chip(struct nand_chip *chip)
chip->ecc.write_subpage = omap_write_subpage_bch;
mtd_set_ooblayout(mtd, &omap_ooblayout_ops);
oobbytes_per_step = chip->ecc.bytes;
-
- err = elm_config(info->elm_dev, BCH16_ECC,
- mtd->writesize / chip->ecc.size,
- chip->ecc.size, chip->ecc.bytes);
- if (err < 0)
- return err;
-
+ elm_bch_strength = BCH16_ECC;
break;
default:
dev_err(dev, "Invalid or unsupported ECC scheme\n");
return -EINVAL;
}
+ if (elm_bch_strength >= 0) {
+ chip->ecc.steps = mtd->writesize / chip->ecc.size;
+ info->neccpg = chip->ecc.steps / ERROR_VECTOR_MAX;
+ if (info->neccpg) {
+ info->nsteps_per_eccpg = ERROR_VECTOR_MAX;
+ } else {
+ info->neccpg = 1;
+ info->nsteps_per_eccpg = chip->ecc.steps;
+ }
+ info->eccpg_size = info->nsteps_per_eccpg * chip->ecc.size;
+ info->eccpg_bytes = info->nsteps_per_eccpg * chip->ecc.bytes;
+
+ err = elm_config(info->elm_dev, elm_bch_strength,
+ info->nsteps_per_eccpg, chip->ecc.size,
+ chip->ecc.bytes);
+ if (err < 0)
+ return err;
+ }
+
/* Check if NAND device's OOB is enough to store ECC signatures */
min_oobbytes += (oobbytes_per_step *
(mtd->writesize / chip->ecc.size));
diff --git a/drivers/mtd/nand/raw/omap_elm.c b/drivers/mtd/nand/raw/omap_elm.c
index 550695a4c1ab..2b21ce04b3ec 100644
--- a/drivers/mtd/nand/raw/omap_elm.c
+++ b/drivers/mtd/nand/raw/omap_elm.c
@@ -116,7 +116,7 @@ int elm_config(struct device *dev, enum bch_ecc bch_type,
return -EINVAL;
}
/* ELM support 8 error syndrome process */
- if (ecc_steps > ERROR_VECTOR_MAX) {
+ if (ecc_steps > ERROR_VECTOR_MAX && ecc_steps % ERROR_VECTOR_MAX) {
dev_err(dev, "unsupported config ecc-step=%d\n", ecc_steps);
return -EINVAL;
}
diff --git a/drivers/mtd/nand/raw/pl35x-nand-controller.c b/drivers/mtd/nand/raw/pl35x-nand-controller.c
new file mode 100644
index 000000000000..8a91e069ee2e
--- /dev/null
+++ b/drivers/mtd/nand/raw/pl35x-nand-controller.c
@@ -0,0 +1,1194 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ARM PL35X NAND flash controller driver
+ *
+ * Copyright (C) 2017 Xilinx, Inc
+ * Author:
+ * Miquel Raynal <miquel.raynal@bootlin.com>
+ * Original work (rewritten):
+ * Punnaiah Choudary Kalluri <punnaia@xilinx.com>
+ * Naga Sureshkumar Relli <nagasure@xilinx.com>
+ */
+
+#include <linux/amba/bus.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/iopoll.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/rawnand.h>
+#include <linux/mtd/partitions.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/clk.h>
+
+#define PL35X_NANDC_DRIVER_NAME "pl35x-nand-controller"
+
+/* SMC controller status register (RO) */
+#define PL35X_SMC_MEMC_STATUS 0x0
+#define PL35X_SMC_MEMC_STATUS_RAW_INT_STATUS1 BIT(6)
+/* SMC clear config register (WO) */
+#define PL35X_SMC_MEMC_CFG_CLR 0xC
+#define PL35X_SMC_MEMC_CFG_CLR_INT_DIS_1 BIT(1)
+#define PL35X_SMC_MEMC_CFG_CLR_INT_CLR_1 BIT(4)
+#define PL35X_SMC_MEMC_CFG_CLR_ECC_INT_DIS_1 BIT(6)
+/* SMC direct command register (WO) */
+#define PL35X_SMC_DIRECT_CMD 0x10
+#define PL35X_SMC_DIRECT_CMD_NAND_CS (0x4 << 23)
+#define PL35X_SMC_DIRECT_CMD_UPD_REGS (0x2 << 21)
+/* SMC set cycles register (WO) */
+#define PL35X_SMC_CYCLES 0x14
+#define PL35X_SMC_NAND_TRC_CYCLES(x) ((x) << 0)
+#define PL35X_SMC_NAND_TWC_CYCLES(x) ((x) << 4)
+#define PL35X_SMC_NAND_TREA_CYCLES(x) ((x) << 8)
+#define PL35X_SMC_NAND_TWP_CYCLES(x) ((x) << 11)
+#define PL35X_SMC_NAND_TCLR_CYCLES(x) ((x) << 14)
+#define PL35X_SMC_NAND_TAR_CYCLES(x) ((x) << 17)
+#define PL35X_SMC_NAND_TRR_CYCLES(x) ((x) << 20)
+/* SMC set opmode register (WO) */
+#define PL35X_SMC_OPMODE 0x18
+#define PL35X_SMC_OPMODE_BW_8 0
+#define PL35X_SMC_OPMODE_BW_16 1
+/* SMC ECC status register (RO) */
+#define PL35X_SMC_ECC_STATUS 0x400
+#define PL35X_SMC_ECC_STATUS_ECC_BUSY BIT(6)
+/* SMC ECC configuration register */
+#define PL35X_SMC_ECC_CFG 0x404
+#define PL35X_SMC_ECC_CFG_MODE_MASK 0xC
+#define PL35X_SMC_ECC_CFG_MODE_BYPASS 0
+#define PL35X_SMC_ECC_CFG_MODE_APB BIT(2)
+#define PL35X_SMC_ECC_CFG_MODE_MEM BIT(3)
+#define PL35X_SMC_ECC_CFG_PGSIZE_MASK 0x3
+/* SMC ECC command 1 register */
+#define PL35X_SMC_ECC_CMD1 0x408
+#define PL35X_SMC_ECC_CMD1_WRITE(x) ((x) << 0)
+#define PL35X_SMC_ECC_CMD1_READ(x) ((x) << 8)
+#define PL35X_SMC_ECC_CMD1_READ_END(x) ((x) << 16)
+#define PL35X_SMC_ECC_CMD1_READ_END_VALID(x) ((x) << 24)
+/* SMC ECC command 2 register */
+#define PL35X_SMC_ECC_CMD2 0x40C
+#define PL35X_SMC_ECC_CMD2_WRITE_COL_CHG(x) ((x) << 0)
+#define PL35X_SMC_ECC_CMD2_READ_COL_CHG(x) ((x) << 8)
+#define PL35X_SMC_ECC_CMD2_READ_COL_CHG_END(x) ((x) << 16)
+#define PL35X_SMC_ECC_CMD2_READ_COL_CHG_END_VALID(x) ((x) << 24)
+/* SMC ECC value registers (RO) */
+#define PL35X_SMC_ECC_VALUE(x) (0x418 + (4 * (x)))
+#define PL35X_SMC_ECC_VALUE_IS_CORRECTABLE(x) ((x) & BIT(27))
+#define PL35X_SMC_ECC_VALUE_HAS_FAILED(x) ((x) & BIT(28))
+#define PL35X_SMC_ECC_VALUE_IS_VALID(x) ((x) & BIT(30))
+
+/* NAND AXI interface */
+#define PL35X_SMC_CMD_PHASE 0
+#define PL35X_SMC_CMD_PHASE_CMD0(x) ((x) << 3)
+#define PL35X_SMC_CMD_PHASE_CMD1(x) ((x) << 11)
+#define PL35X_SMC_CMD_PHASE_CMD1_VALID BIT(20)
+#define PL35X_SMC_CMD_PHASE_ADDR(pos, x) ((x) << (8 * (pos)))
+#define PL35X_SMC_CMD_PHASE_NADDRS(x) ((x) << 21)
+#define PL35X_SMC_DATA_PHASE BIT(19)
+#define PL35X_SMC_DATA_PHASE_ECC_LAST BIT(10)
+#define PL35X_SMC_DATA_PHASE_CLEAR_CS BIT(21)
+
+#define PL35X_NAND_MAX_CS 1
+#define PL35X_NAND_LAST_XFER_SZ 4
+#define TO_CYCLES(ps, period_ns) (DIV_ROUND_UP((ps) / 1000, period_ns))
+
+#define PL35X_NAND_ECC_BITS_MASK 0xFFF
+#define PL35X_NAND_ECC_BYTE_OFF_MASK 0x1FF
+#define PL35X_NAND_ECC_BIT_OFF_MASK 0x7
+
+struct pl35x_nand_timings {
+ unsigned int t_rc:4;
+ unsigned int t_wc:4;
+ unsigned int t_rea:3;
+ unsigned int t_wp:3;
+ unsigned int t_clr:3;
+ unsigned int t_ar:3;
+ unsigned int t_rr:4;
+ unsigned int rsvd:8;
+};
+
+struct pl35x_nand {
+ struct list_head node;
+ struct nand_chip chip;
+ unsigned int cs;
+ unsigned int addr_cycles;
+ u32 ecc_cfg;
+ u32 timings;
+};
+
+/**
+ * struct pl35x_nandc - NAND flash controller driver structure
+ * @dev: Kernel device
+ * @conf_regs: SMC configuration registers for command phase
+ * @io_regs: NAND data registers for data phase
+ * @controller: Core NAND controller structure
+ * @chip: NAND chip information structure
+ * @selected_chip: NAND chip currently selected by the controller
+ * @assigned_cs: List of assigned CS
+ * @ecc_buf: Temporary buffer to extract ECC bytes
+ */
+struct pl35x_nandc {
+ struct device *dev;
+ void __iomem *conf_regs;
+ void __iomem *io_regs;
+ struct nand_controller controller;
+ struct list_head chips;
+ struct nand_chip *selected_chip;
+ unsigned long assigned_cs;
+ u8 *ecc_buf;
+};
+
+static inline struct pl35x_nandc *to_pl35x_nandc(struct nand_controller *ctrl)
+{
+ return container_of(ctrl, struct pl35x_nandc, controller);
+}
+
+static inline struct pl35x_nand *to_pl35x_nand(struct nand_chip *chip)
+{
+ return container_of(chip, struct pl35x_nand, chip);
+}
+
+static int pl35x_ecc_ooblayout16_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
+ if (section >= chip->ecc.steps)
+ return -ERANGE;
+
+ oobregion->offset = (section * chip->ecc.bytes);
+ oobregion->length = chip->ecc.bytes;
+
+ return 0;
+}
+
+static int pl35x_ecc_ooblayout16_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ struct nand_chip *chip = mtd_to_nand(mtd);
+
+ if (section >= chip->ecc.steps)
+ return -ERANGE;
+
+ oobregion->offset = (section * chip->ecc.bytes) + 8;
+ oobregion->length = 8;
+
+ return 0;
+}
+
+static const struct mtd_ooblayout_ops pl35x_ecc_ooblayout16_ops = {
+ .ecc = pl35x_ecc_ooblayout16_ecc,
+ .free = pl35x_ecc_ooblayout16_free,
+};
+
+/* Generic flash bbt decriptors */
+static u8 bbt_pattern[] = { 'B', 'b', 't', '0' };
+static u8 mirror_pattern[] = { '1', 't', 'b', 'B' };
+
+static struct nand_bbt_descr bbt_main_descr = {
+ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
+ | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ .offs = 4,
+ .len = 4,
+ .veroffs = 20,
+ .maxblocks = 4,
+ .pattern = bbt_pattern
+};
+
+static struct nand_bbt_descr bbt_mirror_descr = {
+ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
+ | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP,
+ .offs = 4,
+ .len = 4,
+ .veroffs = 20,
+ .maxblocks = 4,
+ .pattern = mirror_pattern
+};
+
+static void pl35x_smc_update_regs(struct pl35x_nandc *nfc)
+{
+ writel(PL35X_SMC_DIRECT_CMD_NAND_CS |
+ PL35X_SMC_DIRECT_CMD_UPD_REGS,
+ nfc->conf_regs + PL35X_SMC_DIRECT_CMD);
+}
+
+static int pl35x_smc_set_buswidth(struct pl35x_nandc *nfc, unsigned int bw)
+{
+ if (bw != PL35X_SMC_OPMODE_BW_8 && bw != PL35X_SMC_OPMODE_BW_16)
+ return -EINVAL;
+
+ writel(bw, nfc->conf_regs + PL35X_SMC_OPMODE);
+ pl35x_smc_update_regs(nfc);
+
+ return 0;
+}
+
+static void pl35x_smc_clear_irq(struct pl35x_nandc *nfc)
+{
+ writel(PL35X_SMC_MEMC_CFG_CLR_INT_CLR_1,
+ nfc->conf_regs + PL35X_SMC_MEMC_CFG_CLR);
+}
+
+static int pl35x_smc_wait_for_irq(struct pl35x_nandc *nfc)
+{
+ u32 reg;
+ int ret;
+
+ ret = readl_poll_timeout(nfc->conf_regs + PL35X_SMC_MEMC_STATUS, reg,
+ reg & PL35X_SMC_MEMC_STATUS_RAW_INT_STATUS1,
+ 10, 1000000);
+ if (ret)
+ dev_err(nfc->dev,
+ "Timeout polling on NAND controller interrupt (0x%x)\n",
+ reg);
+
+ pl35x_smc_clear_irq(nfc);
+
+ return ret;
+}
+
+static int pl35x_smc_wait_for_ecc_done(struct pl35x_nandc *nfc)
+{
+ u32 reg;
+ int ret;
+
+ ret = readl_poll_timeout(nfc->conf_regs + PL35X_SMC_ECC_STATUS, reg,
+ !(reg & PL35X_SMC_ECC_STATUS_ECC_BUSY),
+ 10, 1000000);
+ if (ret)
+ dev_err(nfc->dev,
+ "Timeout polling on ECC controller interrupt\n");
+
+ return ret;
+}
+
+static int pl35x_smc_set_ecc_mode(struct pl35x_nandc *nfc,
+ struct nand_chip *chip,
+ unsigned int mode)
+{
+ struct pl35x_nand *plnand;
+ u32 ecc_cfg;
+
+ ecc_cfg = readl(nfc->conf_regs + PL35X_SMC_ECC_CFG);
+ ecc_cfg &= ~PL35X_SMC_ECC_CFG_MODE_MASK;
+ ecc_cfg |= mode;
+ writel(ecc_cfg, nfc->conf_regs + PL35X_SMC_ECC_CFG);
+
+ if (chip) {
+ plnand = to_pl35x_nand(chip);
+ plnand->ecc_cfg = ecc_cfg;
+ }
+
+ if (mode != PL35X_SMC_ECC_CFG_MODE_BYPASS)
+ return pl35x_smc_wait_for_ecc_done(nfc);
+
+ return 0;
+}
+
+static void pl35x_smc_force_byte_access(struct nand_chip *chip,
+ bool force_8bit)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ int ret;
+
+ if (!(chip->options & NAND_BUSWIDTH_16))
+ return;
+
+ if (force_8bit)
+ ret = pl35x_smc_set_buswidth(nfc, PL35X_SMC_OPMODE_BW_8);
+ else
+ ret = pl35x_smc_set_buswidth(nfc, PL35X_SMC_OPMODE_BW_16);
+
+ if (ret)
+ dev_err(nfc->dev, "Error in Buswidth\n");
+}
+
+static void pl35x_nand_select_target(struct nand_chip *chip,
+ unsigned int die_nr)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+
+ if (chip == nfc->selected_chip)
+ return;
+
+ /* Setup the timings */
+ writel(plnand->timings, nfc->conf_regs + PL35X_SMC_CYCLES);
+ pl35x_smc_update_regs(nfc);
+
+ /* Configure the ECC engine */
+ writel(plnand->ecc_cfg, nfc->conf_regs + PL35X_SMC_ECC_CFG);
+
+ nfc->selected_chip = chip;
+}
+
+static void pl35x_nand_read_data_op(struct nand_chip *chip, u8 *in,
+ unsigned int len, bool force_8bit,
+ unsigned int flags, unsigned int last_flags)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ unsigned int buf_end = len / 4;
+ unsigned int in_start = round_down(len, 4);
+ unsigned int data_phase_addr;
+ u32 *buf32 = (u32 *)in;
+ u8 *buf8 = (u8 *)in;
+ int i;
+
+ if (force_8bit)
+ pl35x_smc_force_byte_access(chip, true);
+
+ for (i = 0; i < buf_end; i++) {
+ data_phase_addr = PL35X_SMC_DATA_PHASE + flags;
+ if (i + 1 == buf_end)
+ data_phase_addr = PL35X_SMC_DATA_PHASE + last_flags;
+
+ buf32[i] = readl(nfc->io_regs + data_phase_addr);
+ }
+
+ /* No working extra flags on unaligned data accesses */
+ for (i = in_start; i < len; i++)
+ buf8[i] = readb(nfc->io_regs + PL35X_SMC_DATA_PHASE);
+
+ if (force_8bit)
+ pl35x_smc_force_byte_access(chip, false);
+}
+
+static void pl35x_nand_write_data_op(struct nand_chip *chip, const u8 *out,
+ int len, bool force_8bit,
+ unsigned int flags,
+ unsigned int last_flags)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ unsigned int buf_end = len / 4;
+ unsigned int in_start = round_down(len, 4);
+ const u32 *buf32 = (const u32 *)out;
+ const u8 *buf8 = (const u8 *)out;
+ unsigned int data_phase_addr;
+ int i;
+
+ if (force_8bit)
+ pl35x_smc_force_byte_access(chip, true);
+
+ for (i = 0; i < buf_end; i++) {
+ data_phase_addr = PL35X_SMC_DATA_PHASE + flags;
+ if (i + 1 == buf_end)
+ data_phase_addr = PL35X_SMC_DATA_PHASE + last_flags;
+
+ writel(buf32[i], nfc->io_regs + data_phase_addr);
+ }
+
+ /* No working extra flags on unaligned data accesses */
+ for (i = in_start; i < len; i++)
+ writeb(buf8[i], nfc->io_regs + PL35X_SMC_DATA_PHASE);
+
+ if (force_8bit)
+ pl35x_smc_force_byte_access(chip, false);
+}
+
+static int pl35x_nand_correct_data(struct pl35x_nandc *nfc, unsigned char *buf,
+ unsigned char *read_ecc,
+ unsigned char *calc_ecc)
+{
+ unsigned short ecc_odd, ecc_even, read_ecc_lower, read_ecc_upper;
+ unsigned short calc_ecc_lower, calc_ecc_upper;
+ unsigned short byte_addr, bit_addr;
+
+ read_ecc_lower = (read_ecc[0] | (read_ecc[1] << 8)) &
+ PL35X_NAND_ECC_BITS_MASK;
+ read_ecc_upper = ((read_ecc[1] >> 4) | (read_ecc[2] << 4)) &
+ PL35X_NAND_ECC_BITS_MASK;
+
+ calc_ecc_lower = (calc_ecc[0] | (calc_ecc[1] << 8)) &
+ PL35X_NAND_ECC_BITS_MASK;
+ calc_ecc_upper = ((calc_ecc[1] >> 4) | (calc_ecc[2] << 4)) &
+ PL35X_NAND_ECC_BITS_MASK;
+
+ ecc_odd = read_ecc_lower ^ calc_ecc_lower;
+ ecc_even = read_ecc_upper ^ calc_ecc_upper;
+
+ /* No error */
+ if (likely(!ecc_odd && !ecc_even))
+ return 0;
+
+ /* One error in the main data; to be corrected */
+ if (ecc_odd == (~ecc_even & PL35X_NAND_ECC_BITS_MASK)) {
+ /* Bits [11:3] of error code give the byte offset */
+ byte_addr = (ecc_odd >> 3) & PL35X_NAND_ECC_BYTE_OFF_MASK;
+ /* Bits [2:0] of error code give the bit offset */
+ bit_addr = ecc_odd & PL35X_NAND_ECC_BIT_OFF_MASK;
+ /* Toggle the faulty bit */
+ buf[byte_addr] ^= (BIT(bit_addr));
+
+ return 1;
+ }
+
+ /* One error in the ECC data; no action needed */
+ if (hweight32(ecc_odd | ecc_even) == 1)
+ return 1;
+
+ return -EBADMSG;
+}
+
+static void pl35x_nand_ecc_reg_to_array(struct nand_chip *chip, u32 ecc_reg,
+ u8 *ecc_array)
+{
+ u32 ecc_value = ~ecc_reg;
+ unsigned int ecc_byte;
+
+ for (ecc_byte = 0; ecc_byte < chip->ecc.bytes; ecc_byte++)
+ ecc_array[ecc_byte] = ecc_value >> (8 * ecc_byte);
+}
+
+static int pl35x_nand_read_eccbytes(struct pl35x_nandc *nfc,
+ struct nand_chip *chip, u8 *read_ecc)
+{
+ u32 ecc_value;
+ int chunk;
+
+ for (chunk = 0; chunk < chip->ecc.steps;
+ chunk++, read_ecc += chip->ecc.bytes) {
+ ecc_value = readl(nfc->conf_regs + PL35X_SMC_ECC_VALUE(chunk));
+ if (!PL35X_SMC_ECC_VALUE_IS_VALID(ecc_value))
+ return -EINVAL;
+
+ pl35x_nand_ecc_reg_to_array(chip, ecc_value, read_ecc);
+ }
+
+ return 0;
+}
+
+static int pl35x_nand_recover_data_hwecc(struct pl35x_nandc *nfc,
+ struct nand_chip *chip, u8 *data,
+ u8 *read_ecc)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ unsigned int max_bitflips = 0, chunk;
+ u8 calc_ecc[3];
+ u32 ecc_value;
+ int stats;
+
+ for (chunk = 0; chunk < chip->ecc.steps;
+ chunk++, data += chip->ecc.size, read_ecc += chip->ecc.bytes) {
+ /* Read ECC value for each chunk */
+ ecc_value = readl(nfc->conf_regs + PL35X_SMC_ECC_VALUE(chunk));
+
+ if (!PL35X_SMC_ECC_VALUE_IS_VALID(ecc_value))
+ return -EINVAL;
+
+ if (PL35X_SMC_ECC_VALUE_HAS_FAILED(ecc_value)) {
+ mtd->ecc_stats.failed++;
+ continue;
+ }
+
+ pl35x_nand_ecc_reg_to_array(chip, ecc_value, calc_ecc);
+ stats = pl35x_nand_correct_data(nfc, data, read_ecc, calc_ecc);
+ if (stats < 0) {
+ mtd->ecc_stats.failed++;
+ } else {
+ mtd->ecc_stats.corrected += stats;
+ max_bitflips = max_t(unsigned int, max_bitflips, stats);
+ }
+ }
+
+ return max_bitflips;
+}
+
+static int pl35x_nand_write_page_hwecc(struct nand_chip *chip,
+ const u8 *buf, int oob_required,
+ int page)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ unsigned int first_row = (mtd->writesize <= 512) ? 1 : 2;
+ unsigned int nrows = plnand->addr_cycles;
+ u32 addr1 = 0, addr2 = 0, row;
+ u32 cmd_addr;
+ int i, ret;
+
+ ret = pl35x_smc_set_ecc_mode(nfc, chip, PL35X_SMC_ECC_CFG_MODE_APB);
+ if (ret)
+ return ret;
+
+ cmd_addr = PL35X_SMC_CMD_PHASE |
+ PL35X_SMC_CMD_PHASE_NADDRS(plnand->addr_cycles) |
+ PL35X_SMC_CMD_PHASE_CMD0(NAND_CMD_SEQIN);
+
+ for (i = 0, row = first_row; row < nrows; i++, row++) {
+ u8 addr = page >> ((i * 8) & 0xFF);
+
+ if (row < 4)
+ addr1 |= PL35X_SMC_CMD_PHASE_ADDR(row, addr);
+ else
+ addr2 |= PL35X_SMC_CMD_PHASE_ADDR(row - 4, addr);
+ }
+
+ /* Send the command and address cycles */
+ writel(addr1, nfc->io_regs + cmd_addr);
+ if (plnand->addr_cycles > 4)
+ writel(addr2, nfc->io_regs + cmd_addr);
+
+ /* Write the data with the engine enabled */
+ pl35x_nand_write_data_op(chip, buf, mtd->writesize, false,
+ 0, PL35X_SMC_DATA_PHASE_ECC_LAST);
+ ret = pl35x_smc_wait_for_ecc_done(nfc);
+ if (ret)
+ goto disable_ecc_engine;
+
+ /* Copy the HW calculated ECC bytes in the OOB buffer */
+ ret = pl35x_nand_read_eccbytes(nfc, chip, nfc->ecc_buf);
+ if (ret)
+ goto disable_ecc_engine;
+
+ if (!oob_required)
+ memset(chip->oob_poi, 0xFF, mtd->oobsize);
+
+ ret = mtd_ooblayout_set_eccbytes(mtd, nfc->ecc_buf, chip->oob_poi,
+ 0, chip->ecc.total);
+ if (ret)
+ goto disable_ecc_engine;
+
+ /* Write the spare area with ECC bytes */
+ pl35x_nand_write_data_op(chip, chip->oob_poi, mtd->oobsize, false, 0,
+ PL35X_SMC_CMD_PHASE_CMD1(NAND_CMD_PAGEPROG) |
+ PL35X_SMC_CMD_PHASE_CMD1_VALID |
+ PL35X_SMC_DATA_PHASE_CLEAR_CS);
+ ret = pl35x_smc_wait_for_irq(nfc);
+ if (ret)
+ goto disable_ecc_engine;
+
+disable_ecc_engine:
+ pl35x_smc_set_ecc_mode(nfc, chip, PL35X_SMC_ECC_CFG_MODE_BYPASS);
+
+ return ret;
+}
+
+/*
+ * This functions reads data and checks the data integrity by comparing hardware
+ * generated ECC values and read ECC values from spare area.
+ *
+ * There is a limitation with SMC controller: ECC_LAST must be set on the
+ * last data access to tell the ECC engine not to expect any further data.
+ * In practice, this implies to shrink the last data transfert by eg. 4 bytes,
+ * and doing a last 4-byte transfer with the additional bit set. The last block
+ * should be aligned with the end of an ECC block. Because of this limitation,
+ * it is not possible to use the core routines.
+ */
+static int pl35x_nand_read_page_hwecc(struct nand_chip *chip,
+ u8 *buf, int oob_required, int page)
+{
+ const struct nand_sdr_timings *sdr =
+ nand_get_sdr_timings(nand_get_interface_config(chip));
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ unsigned int first_row = (mtd->writesize <= 512) ? 1 : 2;
+ unsigned int nrows = plnand->addr_cycles;
+ unsigned int addr1 = 0, addr2 = 0, row;
+ u32 cmd_addr;
+ int i, ret;
+
+ ret = pl35x_smc_set_ecc_mode(nfc, chip, PL35X_SMC_ECC_CFG_MODE_APB);
+ if (ret)
+ return ret;
+
+ cmd_addr = PL35X_SMC_CMD_PHASE |
+ PL35X_SMC_CMD_PHASE_NADDRS(plnand->addr_cycles) |
+ PL35X_SMC_CMD_PHASE_CMD0(NAND_CMD_READ0) |
+ PL35X_SMC_CMD_PHASE_CMD1(NAND_CMD_READSTART) |
+ PL35X_SMC_CMD_PHASE_CMD1_VALID;
+
+ for (i = 0, row = first_row; row < nrows; i++, row++) {
+ u8 addr = page >> ((i * 8) & 0xFF);
+
+ if (row < 4)
+ addr1 |= PL35X_SMC_CMD_PHASE_ADDR(row, addr);
+ else
+ addr2 |= PL35X_SMC_CMD_PHASE_ADDR(row - 4, addr);
+ }
+
+ /* Send the command and address cycles */
+ writel(addr1, nfc->io_regs + cmd_addr);
+ if (plnand->addr_cycles > 4)
+ writel(addr2, nfc->io_regs + cmd_addr);
+
+ /* Wait the data to be available in the NAND cache */
+ ndelay(PSEC_TO_NSEC(sdr->tRR_min));
+ ret = pl35x_smc_wait_for_irq(nfc);
+ if (ret)
+ goto disable_ecc_engine;
+
+ /* Retrieve the raw data with the engine enabled */
+ pl35x_nand_read_data_op(chip, buf, mtd->writesize, false,
+ 0, PL35X_SMC_DATA_PHASE_ECC_LAST);
+ ret = pl35x_smc_wait_for_ecc_done(nfc);
+ if (ret)
+ goto disable_ecc_engine;
+
+ /* Retrieve the stored ECC bytes */
+ pl35x_nand_read_data_op(chip, chip->oob_poi, mtd->oobsize, false,
+ 0, PL35X_SMC_DATA_PHASE_CLEAR_CS);
+ ret = mtd_ooblayout_get_eccbytes(mtd, nfc->ecc_buf, chip->oob_poi, 0,
+ chip->ecc.total);
+ if (ret)
+ goto disable_ecc_engine;
+
+ pl35x_smc_set_ecc_mode(nfc, chip, PL35X_SMC_ECC_CFG_MODE_BYPASS);
+
+ /* Correct the data and report failures */
+ return pl35x_nand_recover_data_hwecc(nfc, chip, buf, nfc->ecc_buf);
+
+disable_ecc_engine:
+ pl35x_smc_set_ecc_mode(nfc, chip, PL35X_SMC_ECC_CFG_MODE_BYPASS);
+
+ return ret;
+}
+
+static int pl35x_nand_exec_op(struct nand_chip *chip,
+ const struct nand_subop *subop)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ const struct nand_op_instr *instr, *data_instr = NULL;
+ unsigned int rdy_tim_ms = 0, naddrs = 0, cmds = 0, last_flags = 0;
+ u32 addr1 = 0, addr2 = 0, cmd0 = 0, cmd1 = 0, cmd_addr = 0;
+ unsigned int op_id, len, offset, rdy_del_ns;
+ int last_instr_type = -1;
+ bool cmd1_valid = false;
+ const u8 *addrs;
+ int i, ret;
+
+ for (op_id = 0; op_id < subop->ninstrs; op_id++) {
+ instr = &subop->instrs[op_id];
+
+ switch (instr->type) {
+ case NAND_OP_CMD_INSTR:
+ if (!cmds) {
+ cmd0 = PL35X_SMC_CMD_PHASE_CMD0(instr->ctx.cmd.opcode);
+ } else {
+ cmd1 = PL35X_SMC_CMD_PHASE_CMD1(instr->ctx.cmd.opcode);
+ if (last_instr_type != NAND_OP_DATA_OUT_INSTR)
+ cmd1_valid = true;
+ }
+ cmds++;
+ break;
+
+ case NAND_OP_ADDR_INSTR:
+ offset = nand_subop_get_addr_start_off(subop, op_id);
+ naddrs = nand_subop_get_num_addr_cyc(subop, op_id);
+ addrs = &instr->ctx.addr.addrs[offset];
+ cmd_addr |= PL35X_SMC_CMD_PHASE_NADDRS(naddrs);
+
+ for (i = offset; i < naddrs; i++) {
+ if (i < 4)
+ addr1 |= PL35X_SMC_CMD_PHASE_ADDR(i, addrs[i]);
+ else
+ addr2 |= PL35X_SMC_CMD_PHASE_ADDR(i - 4, addrs[i]);
+ }
+ break;
+
+ case NAND_OP_DATA_IN_INSTR:
+ case NAND_OP_DATA_OUT_INSTR:
+ data_instr = instr;
+ len = nand_subop_get_data_len(subop, op_id);
+ break;
+
+ case NAND_OP_WAITRDY_INSTR:
+ rdy_tim_ms = instr->ctx.waitrdy.timeout_ms;
+ rdy_del_ns = instr->delay_ns;
+ break;
+ }
+
+ last_instr_type = instr->type;
+ }
+
+ /* Command phase */
+ cmd_addr |= PL35X_SMC_CMD_PHASE | cmd0 | cmd1 |
+ (cmd1_valid ? PL35X_SMC_CMD_PHASE_CMD1_VALID : 0);
+ writel(addr1, nfc->io_regs + cmd_addr);
+ if (naddrs > 4)
+ writel(addr2, nfc->io_regs + cmd_addr);
+
+ /* Data phase */
+ if (data_instr && data_instr->type == NAND_OP_DATA_OUT_INSTR) {
+ last_flags = PL35X_SMC_DATA_PHASE_CLEAR_CS;
+ if (cmds == 2)
+ last_flags |= cmd1 | PL35X_SMC_CMD_PHASE_CMD1_VALID;
+
+ pl35x_nand_write_data_op(chip, data_instr->ctx.data.buf.out,
+ len, data_instr->ctx.data.force_8bit,
+ 0, last_flags);
+ }
+
+ if (rdy_tim_ms) {
+ ndelay(rdy_del_ns);
+ ret = pl35x_smc_wait_for_irq(nfc);
+ if (ret)
+ return ret;
+ }
+
+ if (data_instr && data_instr->type == NAND_OP_DATA_IN_INSTR)
+ pl35x_nand_read_data_op(chip, data_instr->ctx.data.buf.in,
+ len, data_instr->ctx.data.force_8bit,
+ 0, PL35X_SMC_DATA_PHASE_CLEAR_CS);
+
+ return 0;
+}
+
+static const struct nand_op_parser pl35x_nandc_op_parser = NAND_OP_PARSER(
+ NAND_OP_PARSER_PATTERN(pl35x_nand_exec_op,
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(true, 7),
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true),
+ NAND_OP_PARSER_PAT_DATA_IN_ELEM(true, 2112)),
+ NAND_OP_PARSER_PATTERN(pl35x_nand_exec_op,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, 7),
+ NAND_OP_PARSER_PAT_DATA_OUT_ELEM(false, 2112),
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true)),
+ NAND_OP_PARSER_PATTERN(pl35x_nand_exec_op,
+ NAND_OP_PARSER_PAT_CMD_ELEM(false),
+ NAND_OP_PARSER_PAT_ADDR_ELEM(false, 7),
+ NAND_OP_PARSER_PAT_DATA_OUT_ELEM(false, 2112),
+ NAND_OP_PARSER_PAT_CMD_ELEM(true),
+ NAND_OP_PARSER_PAT_WAITRDY_ELEM(true)),
+ );
+
+static int pl35x_nfc_exec_op(struct nand_chip *chip,
+ const struct nand_operation *op,
+ bool check_only)
+{
+ if (!check_only)
+ pl35x_nand_select_target(chip, op->cs);
+
+ return nand_op_parser_exec_op(chip, &pl35x_nandc_op_parser,
+ op, check_only);
+}
+
+static int pl35x_nfc_setup_interface(struct nand_chip *chip, int cs,
+ const struct nand_interface_config *conf)
+{
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+ struct pl35x_nand_timings tmgs = {};
+ const struct nand_sdr_timings *sdr;
+ unsigned int period_ns, val;
+ struct clk *mclk;
+
+ sdr = nand_get_sdr_timings(conf);
+ if (IS_ERR(sdr))
+ return PTR_ERR(sdr);
+
+ mclk = of_clk_get_by_name(nfc->dev->parent->of_node, "memclk");
+ if (IS_ERR(mclk)) {
+ dev_err(nfc->dev, "Failed to retrieve SMC memclk\n");
+ return PTR_ERR(mclk);
+ }
+
+ /*
+ * SDR timings are given in pico-seconds while NFC timings must be
+ * expressed in NAND controller clock cycles. We use the TO_CYCLE()
+ * macro to convert from one to the other.
+ */
+ period_ns = NSEC_PER_SEC / clk_get_rate(mclk);
+
+ /*
+ * PL35X SMC needs one extra read cycle in SDR Mode 5. This is not
+ * written anywhere in the datasheet but is an empirical observation.
+ */
+ val = TO_CYCLES(sdr->tRC_min, period_ns);
+ if (sdr->tRC_min <= 20000)
+ val++;
+
+ tmgs.t_rc = val;
+ if (tmgs.t_rc != val || tmgs.t_rc < 2)
+ return -EINVAL;
+
+ val = TO_CYCLES(sdr->tWC_min, period_ns);
+ tmgs.t_wc = val;
+ if (tmgs.t_wc != val || tmgs.t_wc < 2)
+ return -EINVAL;
+
+ /*
+ * For all SDR modes, PL35X SMC needs tREA_max being 1,
+ * this is also an empirical result.
+ */
+ tmgs.t_rea = 1;
+
+ val = TO_CYCLES(sdr->tWP_min, period_ns);
+ tmgs.t_wp = val;
+ if (tmgs.t_wp != val || tmgs.t_wp < 1)
+ return -EINVAL;
+
+ val = TO_CYCLES(sdr->tCLR_min, period_ns);
+ tmgs.t_clr = val;
+ if (tmgs.t_clr != val)
+ return -EINVAL;
+
+ val = TO_CYCLES(sdr->tAR_min, period_ns);
+ tmgs.t_ar = val;
+ if (tmgs.t_ar != val)
+ return -EINVAL;
+
+ val = TO_CYCLES(sdr->tRR_min, period_ns);
+ tmgs.t_rr = val;
+ if (tmgs.t_rr != val)
+ return -EINVAL;
+
+ if (cs == NAND_DATA_IFACE_CHECK_ONLY)
+ return 0;
+
+ plnand->timings = PL35X_SMC_NAND_TRC_CYCLES(tmgs.t_rc) |
+ PL35X_SMC_NAND_TWC_CYCLES(tmgs.t_wc) |
+ PL35X_SMC_NAND_TREA_CYCLES(tmgs.t_rea) |
+ PL35X_SMC_NAND_TWP_CYCLES(tmgs.t_wp) |
+ PL35X_SMC_NAND_TCLR_CYCLES(tmgs.t_clr) |
+ PL35X_SMC_NAND_TAR_CYCLES(tmgs.t_ar) |
+ PL35X_SMC_NAND_TRR_CYCLES(tmgs.t_rr);
+
+ return 0;
+}
+
+static void pl35x_smc_set_ecc_pg_size(struct pl35x_nandc *nfc,
+ struct nand_chip *chip,
+ unsigned int pg_sz)
+{
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+ u32 sz;
+
+ switch (pg_sz) {
+ case SZ_512:
+ sz = 1;
+ break;
+ case SZ_1K:
+ sz = 2;
+ break;
+ case SZ_2K:
+ sz = 3;
+ break;
+ default:
+ sz = 0;
+ break;
+ }
+
+ plnand->ecc_cfg = readl(nfc->conf_regs + PL35X_SMC_ECC_CFG);
+ plnand->ecc_cfg &= ~PL35X_SMC_ECC_CFG_PGSIZE_MASK;
+ plnand->ecc_cfg |= sz;
+ writel(plnand->ecc_cfg, nfc->conf_regs + PL35X_SMC_ECC_CFG);
+}
+
+static int pl35x_nand_init_hw_ecc_controller(struct pl35x_nandc *nfc,
+ struct nand_chip *chip)
+{
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ int ret = 0;
+
+ if (mtd->writesize < SZ_512 || mtd->writesize > SZ_2K) {
+ dev_err(nfc->dev,
+ "The hardware ECC engine is limited to pages up to 2kiB\n");
+ return -EOPNOTSUPP;
+ }
+
+ chip->ecc.strength = 1;
+ chip->ecc.bytes = 3;
+ chip->ecc.size = SZ_512;
+ chip->ecc.steps = mtd->writesize / chip->ecc.size;
+ chip->ecc.read_page = pl35x_nand_read_page_hwecc;
+ chip->ecc.write_page = pl35x_nand_write_page_hwecc;
+ chip->ecc.write_page_raw = nand_monolithic_write_page_raw;
+ pl35x_smc_set_ecc_pg_size(nfc, chip, mtd->writesize);
+
+ nfc->ecc_buf = devm_kmalloc(nfc->dev, chip->ecc.bytes * chip->ecc.steps,
+ GFP_KERNEL);
+ if (!nfc->ecc_buf)
+ return -ENOMEM;
+
+ switch (mtd->oobsize) {
+ case 16:
+ /* Legacy Xilinx layout */
+ mtd_set_ooblayout(mtd, &pl35x_ecc_ooblayout16_ops);
+ chip->bbt_options |= NAND_BBT_NO_OOB_BBM;
+ break;
+ case 64:
+ mtd_set_ooblayout(mtd, nand_get_large_page_ooblayout());
+ break;
+ default:
+ dev_err(nfc->dev, "Unsupported OOB size\n");
+ return -EOPNOTSUPP;
+ }
+
+ return ret;
+}
+
+static int pl35x_nand_attach_chip(struct nand_chip *chip)
+{
+ const struct nand_ecc_props *requirements =
+ nanddev_get_ecc_requirements(&chip->base);
+ struct pl35x_nandc *nfc = to_pl35x_nandc(chip->controller);
+ struct pl35x_nand *plnand = to_pl35x_nand(chip);
+ struct mtd_info *mtd = nand_to_mtd(chip);
+ int ret;
+
+ if (chip->ecc.engine_type != NAND_ECC_ENGINE_TYPE_NONE &&
+ (!chip->ecc.size || !chip->ecc.strength)) {
+ if (requirements->step_size && requirements->strength) {
+ chip->ecc.size = requirements->step_size;
+ chip->ecc.strength = requirements->strength;
+ } else {
+ dev_info(nfc->dev,
+ "No minimum ECC strength, using 1b/512B\n");
+ chip->ecc.size = 512;
+ chip->ecc.strength = 1;
+ }
+ }
+
+ if (mtd->writesize <= SZ_512)
+ plnand->addr_cycles = 1;
+ else
+ plnand->addr_cycles = 2;
+
+ if (chip->options & NAND_ROW_ADDR_3)
+ plnand->addr_cycles += 3;
+ else
+ plnand->addr_cycles += 2;
+
+ switch (chip->ecc.engine_type) {
+ case NAND_ECC_ENGINE_TYPE_ON_DIE:
+ /* Keep these legacy BBT descriptors for ON_DIE situations */
+ chip->bbt_td = &bbt_main_descr;
+ chip->bbt_md = &bbt_mirror_descr;
+ fallthrough;
+ case NAND_ECC_ENGINE_TYPE_NONE:
+ case NAND_ECC_ENGINE_TYPE_SOFT:
+ break;
+ case NAND_ECC_ENGINE_TYPE_ON_HOST:
+ ret = pl35x_nand_init_hw_ecc_controller(nfc, chip);
+ if (ret)
+ return ret;
+ break;
+ default:
+ dev_err(nfc->dev, "Unsupported ECC mode: %d\n",
+ chip->ecc.engine_type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct nand_controller_ops pl35x_nandc_ops = {
+ .attach_chip = pl35x_nand_attach_chip,
+ .exec_op = pl35x_nfc_exec_op,
+ .setup_interface = pl35x_nfc_setup_interface,
+};
+
+static int pl35x_nand_reset_state(struct pl35x_nandc *nfc)
+{
+ int ret;
+
+ /* Disable interrupts and clear their status */
+ writel(PL35X_SMC_MEMC_CFG_CLR_INT_CLR_1 |
+ PL35X_SMC_MEMC_CFG_CLR_ECC_INT_DIS_1 |
+ PL35X_SMC_MEMC_CFG_CLR_INT_DIS_1,
+ nfc->conf_regs + PL35X_SMC_MEMC_CFG_CLR);
+
+ /* Set default bus width to 8-bit */
+ ret = pl35x_smc_set_buswidth(nfc, PL35X_SMC_OPMODE_BW_8);
+ if (ret)
+ return ret;
+
+ /* Ensure the ECC controller is bypassed by default */
+ ret = pl35x_smc_set_ecc_mode(nfc, NULL, PL35X_SMC_ECC_CFG_MODE_BYPASS);
+ if (ret)
+ return ret;
+
+ /*
+ * Configure the commands that the ECC block uses to detect the
+ * operations it should start/end.
+ */
+ writel(PL35X_SMC_ECC_CMD1_WRITE(NAND_CMD_SEQIN) |
+ PL35X_SMC_ECC_CMD1_READ(NAND_CMD_READ0) |
+ PL35X_SMC_ECC_CMD1_READ_END(NAND_CMD_READSTART) |
+ PL35X_SMC_ECC_CMD1_READ_END_VALID(NAND_CMD_READ1),
+ nfc->conf_regs + PL35X_SMC_ECC_CMD1);
+ writel(PL35X_SMC_ECC_CMD2_WRITE_COL_CHG(NAND_CMD_RNDIN) |
+ PL35X_SMC_ECC_CMD2_READ_COL_CHG(NAND_CMD_RNDOUT) |
+ PL35X_SMC_ECC_CMD2_READ_COL_CHG_END(NAND_CMD_RNDOUTSTART) |
+ PL35X_SMC_ECC_CMD2_READ_COL_CHG_END_VALID(NAND_CMD_READ1),
+ nfc->conf_regs + PL35X_SMC_ECC_CMD2);
+
+ return 0;
+}
+
+static int pl35x_nand_chip_init(struct pl35x_nandc *nfc,
+ struct device_node *np)
+{
+ struct pl35x_nand *plnand;
+ struct nand_chip *chip;
+ struct mtd_info *mtd;
+ int cs, ret;
+
+ plnand = devm_kzalloc(nfc->dev, sizeof(*plnand), GFP_KERNEL);
+ if (!plnand)
+ return -ENOMEM;
+
+ ret = of_property_read_u32(np, "reg", &cs);
+ if (ret)
+ return ret;
+
+ if (cs >= PL35X_NAND_MAX_CS) {
+ dev_err(nfc->dev, "Wrong CS %d\n", cs);
+ return -EINVAL;
+ }
+
+ if (test_and_set_bit(cs, &nfc->assigned_cs)) {
+ dev_err(nfc->dev, "Already assigned CS %d\n", cs);
+ return -EINVAL;
+ }
+
+ plnand->cs = cs;
+
+ chip = &plnand->chip;
+ chip->options = NAND_BUSWIDTH_AUTO | NAND_USES_DMA | NAND_NO_SUBPAGE_WRITE;
+ chip->bbt_options = NAND_BBT_USE_FLASH;
+ chip->controller = &nfc->controller;
+ mtd = nand_to_mtd(chip);
+ mtd->dev.parent = nfc->dev;
+ nand_set_flash_node(chip, nfc->dev->of_node);
+ if (!mtd->name) {
+ mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL,
+ "%s", PL35X_NANDC_DRIVER_NAME);
+ if (!mtd->name) {
+ dev_err(nfc->dev, "Failed to allocate mtd->name\n");
+ return -ENOMEM;
+ }
+ }
+
+ ret = nand_scan(chip, 1);
+ if (ret)
+ return ret;
+
+ ret = mtd_device_register(mtd, NULL, 0);
+ if (ret) {
+ nand_cleanup(chip);
+ return ret;
+ }
+
+ list_add_tail(&plnand->node, &nfc->chips);
+
+ return ret;
+}
+
+static void pl35x_nand_chips_cleanup(struct pl35x_nandc *nfc)
+{
+ struct pl35x_nand *plnand, *tmp;
+ struct nand_chip *chip;
+ int ret;
+
+ list_for_each_entry_safe(plnand, tmp, &nfc->chips, node) {
+ chip = &plnand->chip;
+ ret = mtd_device_unregister(nand_to_mtd(chip));
+ WARN_ON(ret);
+ nand_cleanup(chip);
+ list_del(&plnand->node);
+ }
+}
+
+static int pl35x_nand_chips_init(struct pl35x_nandc *nfc)
+{
+ struct device_node *np = nfc->dev->of_node, *nand_np;
+ int nchips = of_get_child_count(np);
+ int ret;
+
+ if (!nchips || nchips > PL35X_NAND_MAX_CS) {
+ dev_err(nfc->dev, "Incorrect number of NAND chips (%d)\n",
+ nchips);
+ return -EINVAL;
+ }
+
+ for_each_child_of_node(np, nand_np) {
+ ret = pl35x_nand_chip_init(nfc, nand_np);
+ if (ret) {
+ of_node_put(nand_np);
+ pl35x_nand_chips_cleanup(nfc);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static int pl35x_nand_probe(struct platform_device *pdev)
+{
+ struct device *smc_dev = pdev->dev.parent;
+ struct amba_device *smc_amba = to_amba_device(smc_dev);
+ struct pl35x_nandc *nfc;
+ u32 ret;
+
+ nfc = devm_kzalloc(&pdev->dev, sizeof(*nfc), GFP_KERNEL);
+ if (!nfc)
+ return -ENOMEM;
+
+ nfc->dev = &pdev->dev;
+ nand_controller_init(&nfc->controller);
+ nfc->controller.ops = &pl35x_nandc_ops;
+ INIT_LIST_HEAD(&nfc->chips);
+
+ nfc->conf_regs = devm_ioremap_resource(&smc_amba->dev, &smc_amba->res);
+ if (IS_ERR(nfc->conf_regs))
+ return PTR_ERR(nfc->conf_regs);
+
+ nfc->io_regs = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(nfc->io_regs))
+ return PTR_ERR(nfc->io_regs);
+
+ ret = pl35x_nand_reset_state(nfc);
+ if (ret)
+ return ret;
+
+ ret = pl35x_nand_chips_init(nfc);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, nfc);
+
+ return 0;
+}
+
+static int pl35x_nand_remove(struct platform_device *pdev)
+{
+ struct pl35x_nandc *nfc = platform_get_drvdata(pdev);
+
+ pl35x_nand_chips_cleanup(nfc);
+
+ return 0;
+}
+
+static const struct of_device_id pl35x_nand_of_match[] = {
+ { .compatible = "arm,pl353-nand-r2p1" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pl35x_nand_of_match);
+
+static struct platform_driver pl35x_nandc_driver = {
+ .probe = pl35x_nand_probe,
+ .remove = pl35x_nand_remove,
+ .driver = {
+ .name = PL35X_NANDC_DRIVER_NAME,
+ .of_match_table = pl35x_nand_of_match,
+ },
+};
+module_platform_driver(pl35x_nandc_driver);
+
+MODULE_AUTHOR("Xilinx, Inc.");
+MODULE_ALIAS("platform:" PL35X_NANDC_DRIVER_NAME);
+MODULE_DESCRIPTION("ARM PL35X NAND controller driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/mtd/nand/raw/qcom_nandc.c b/drivers/mtd/nand/raw/qcom_nandc.c
index a64fb6ce915d..ef0badea4f41 100644
--- a/drivers/mtd/nand/raw/qcom_nandc.c
+++ b/drivers/mtd/nand/raw/qcom_nandc.c
@@ -734,6 +734,7 @@ static void update_rw_regs(struct qcom_nand_host *host, int num_cw, bool read, i
{
struct nand_chip *chip = &host->chip;
u32 cmd, cfg0, cfg1, ecc_bch_cfg;
+ struct qcom_nand_controller *nandc = get_qcom_nand_controller(chip);
if (read) {
if (host->use_ecc)
@@ -762,7 +763,8 @@ static void update_rw_regs(struct qcom_nand_host *host, int num_cw, bool read, i
nandc_set_reg(chip, NAND_DEV0_CFG0, cfg0);
nandc_set_reg(chip, NAND_DEV0_CFG1, cfg1);
nandc_set_reg(chip, NAND_DEV0_ECC_CFG, ecc_bch_cfg);
- nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, host->ecc_buf_cfg);
+ if (!nandc->props->qpic_v2)
+ nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, host->ecc_buf_cfg);
nandc_set_reg(chip, NAND_FLASH_STATUS, host->clrflashstatus);
nandc_set_reg(chip, NAND_READ_STATUS, host->clrreadstatus);
nandc_set_reg(chip, NAND_EXEC_CMD, 1);
@@ -1133,7 +1135,8 @@ static void config_nand_page_read(struct nand_chip *chip)
write_reg_dma(nandc, NAND_ADDR0, 2, 0);
write_reg_dma(nandc, NAND_DEV0_CFG0, 3, 0);
- write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1, 0);
+ if (!nandc->props->qpic_v2)
+ write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1, 0);
write_reg_dma(nandc, NAND_ERASED_CW_DETECT_CFG, 1, 0);
write_reg_dma(nandc, NAND_ERASED_CW_DETECT_CFG, 1,
NAND_ERASED_CW_SET | NAND_BAM_NEXT_SGL);
@@ -1191,8 +1194,9 @@ static void config_nand_page_write(struct nand_chip *chip)
write_reg_dma(nandc, NAND_ADDR0, 2, 0);
write_reg_dma(nandc, NAND_DEV0_CFG0, 3, 0);
- write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1,
- NAND_BAM_NEXT_SGL);
+ if (!nandc->props->qpic_v2)
+ write_reg_dma(nandc, NAND_EBI2_ECC_BUF_CFG, 1,
+ NAND_BAM_NEXT_SGL);
}
/*
@@ -1248,7 +1252,8 @@ static int nandc_param(struct qcom_nand_host *host)
| 2 << WR_RD_BSY_GAP
| 0 << WIDE_FLASH
| 1 << DEV0_CFG1_ECC_DISABLE);
- nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, 1 << ECC_CFG_ECC_DISABLE);
+ if (!nandc->props->qpic_v2)
+ nandc_set_reg(chip, NAND_EBI2_ECC_BUF_CFG, 1 << ECC_CFG_ECC_DISABLE);
/* configure CMD1 and VLD for ONFI param probing in QPIC v1 */
if (!nandc->props->qpic_v2) {
@@ -1850,8 +1855,7 @@ static int parse_read_errors(struct qcom_nand_host *host, u8 *data_buf,
* ERASED_CW bits are set.
*/
if (host->bch_enabled) {
- erased = (erased_cw & ERASED_CW) == ERASED_CW ?
- true : false;
+ erased = (erased_cw & ERASED_CW) == ERASED_CW;
/*
* For RS ECC, HW reports the erased CW by placing
* special characters at certain offsets in the buffer.
@@ -2689,7 +2693,8 @@ static int qcom_nand_attach_chip(struct nand_chip *chip)
| ecc_mode << ECC_MODE
| host->ecc_bytes_hw << ECC_PARITY_SIZE_BYTES_BCH;
- host->ecc_buf_cfg = 0x203 << NUM_STEPS;
+ if (!nandc->props->qpic_v2)
+ host->ecc_buf_cfg = 0x203 << NUM_STEPS;
host->clrflashstatus = FS_READY_BSY_N;
host->clrreadstatus = 0xc0;
@@ -2882,7 +2887,7 @@ static int qcom_nandc_setup(struct qcom_nand_controller *nandc)
return 0;
}
-static const char * const probes[] = { "qcomsmem", NULL };
+static const char * const probes[] = { "cmdlinepart", "ofpart", "qcomsmem", NULL };
static int qcom_nand_host_init_and_register(struct qcom_nand_controller *nandc,
struct qcom_nand_host *host,
diff --git a/drivers/mtd/nand/raw/r852.c b/drivers/mtd/nand/raw/r852.c
index ebe859ca49cb..ed0cf732d20e 100644
--- a/drivers/mtd/nand/raw/r852.c
+++ b/drivers/mtd/nand/raw/r852.c
@@ -583,8 +583,8 @@ static void r852_update_card_detect(struct r852_device *dev)
r852_write_reg(dev, R852_CARD_IRQ_ENABLE, card_detect_reg);
}
-static ssize_t r852_media_type_show(struct device *sys_dev,
- struct device_attribute *attr, char *buf)
+static ssize_t media_type_show(struct device *sys_dev,
+ struct device_attribute *attr, char *buf)
{
struct mtd_info *mtd = container_of(sys_dev, struct mtd_info, dev);
struct r852_device *dev = r852_get_dev(mtd);
@@ -593,8 +593,7 @@ static ssize_t r852_media_type_show(struct device *sys_dev,
strcpy(buf, data);
return strlen(data);
}
-
-static DEVICE_ATTR(media_type, S_IRUGO, r852_media_type_show, NULL);
+static DEVICE_ATTR_RO(media_type);
/* Detect properties of card in slot */
diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index 923a9e236fcf..ea953e31933e 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -1972,10 +1972,8 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc,
sunxi_nand = devm_kzalloc(dev, struct_size(sunxi_nand, sels, nsels),
GFP_KERNEL);
- if (!sunxi_nand) {
- dev_err(dev, "could not allocate chip\n");
+ if (!sunxi_nand)
return -ENOMEM;
- }
sunxi_nand->nsels = nsels;
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index 3131fae0c715..446ba8d43fbc 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -138,20 +138,12 @@ int spinand_select_target(struct spinand_device *spinand, unsigned int target)
return 0;
}
-static int spinand_init_cfg_cache(struct spinand_device *spinand)
+static int spinand_read_cfg(struct spinand_device *spinand)
{
struct nand_device *nand = spinand_to_nand(spinand);
- struct device *dev = &spinand->spimem->spi->dev;
unsigned int target;
int ret;
- spinand->cfg_cache = devm_kcalloc(dev,
- nand->memorg.ntargets,
- sizeof(*spinand->cfg_cache),
- GFP_KERNEL);
- if (!spinand->cfg_cache)
- return -ENOMEM;
-
for (target = 0; target < nand->memorg.ntargets; target++) {
ret = spinand_select_target(spinand, target);
if (ret)
@@ -170,6 +162,21 @@ static int spinand_init_cfg_cache(struct spinand_device *spinand)
return 0;
}
+static int spinand_init_cfg_cache(struct spinand_device *spinand)
+{
+ struct nand_device *nand = spinand_to_nand(spinand);
+ struct device *dev = &spinand->spimem->spi->dev;
+
+ spinand->cfg_cache = devm_kcalloc(dev,
+ nand->memorg.ntargets,
+ sizeof(*spinand->cfg_cache),
+ GFP_KERNEL);
+ if (!spinand->cfg_cache)
+ return -ENOMEM;
+
+ return 0;
+}
+
static int spinand_init_quad_enable(struct spinand_device *spinand)
{
bool enable = false;
@@ -290,6 +297,8 @@ static int spinand_ondie_ecc_finish_io_req(struct nand_device *nand,
{
struct spinand_ondie_ecc_conf *engine_conf = nand->ecc.ctx.priv;
struct spinand_device *spinand = nand_to_spinand(nand);
+ struct mtd_info *mtd = spinand_to_mtd(spinand);
+ int ret;
if (req->mode == MTD_OPS_RAW)
return 0;
@@ -299,7 +308,13 @@ static int spinand_ondie_ecc_finish_io_req(struct nand_device *nand,
return 0;
/* Finish a page write: check the status, report errors/bitflips */
- return spinand_check_ecc_status(spinand, engine_conf->status);
+ ret = spinand_check_ecc_status(spinand, engine_conf->status);
+ if (ret == -EBADMSG)
+ mtd->ecc_stats.failed++;
+ else if (ret > 0)
+ mtd->ecc_stats.corrected += ret;
+
+ return ret;
}
static struct nand_ecc_engine_ops spinand_ondie_ecc_engine_ops = {
@@ -635,13 +650,10 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from,
if (ret < 0 && ret != -EBADMSG)
break;
- if (ret == -EBADMSG) {
+ if (ret == -EBADMSG)
ecc_failed = true;
- mtd->ecc_stats.failed++;
- } else {
- mtd->ecc_stats.corrected += ret;
+ else
max_bitflips = max_t(unsigned int, max_bitflips, ret);
- }
ret = 0;
ops->retlen += iter.req.datalen;
@@ -1093,12 +1105,71 @@ static int spinand_detect(struct spinand_device *spinand)
return 0;
}
+static int spinand_init_flash(struct spinand_device *spinand)
+{
+ struct device *dev = &spinand->spimem->spi->dev;
+ struct nand_device *nand = spinand_to_nand(spinand);
+ int ret, i;
+
+ ret = spinand_read_cfg(spinand);
+ if (ret)
+ return ret;
+
+ ret = spinand_init_quad_enable(spinand);
+ if (ret)
+ return ret;
+
+ ret = spinand_upd_cfg(spinand, CFG_OTP_ENABLE, 0);
+ if (ret)
+ return ret;
+
+ ret = spinand_manufacturer_init(spinand);
+ if (ret) {
+ dev_err(dev,
+ "Failed to initialize the SPI NAND chip (err = %d)\n",
+ ret);
+ return ret;
+ }
+
+ /* After power up, all blocks are locked, so unlock them here. */
+ for (i = 0; i < nand->memorg.ntargets; i++) {
+ ret = spinand_select_target(spinand, i);
+ if (ret)
+ break;
+
+ ret = spinand_lock_block(spinand, BL_ALL_UNLOCKED);
+ if (ret)
+ break;
+ }
+
+ if (ret)
+ spinand_manufacturer_cleanup(spinand);
+
+ return ret;
+}
+
+static void spinand_mtd_resume(struct mtd_info *mtd)
+{
+ struct spinand_device *spinand = mtd_to_spinand(mtd);
+ int ret;
+
+ ret = spinand_reset_op(spinand);
+ if (ret)
+ return;
+
+ ret = spinand_init_flash(spinand);
+ if (ret)
+ return;
+
+ spinand_ecc_enable(spinand, false);
+}
+
static int spinand_init(struct spinand_device *spinand)
{
struct device *dev = &spinand->spimem->spi->dev;
struct mtd_info *mtd = spinand_to_mtd(spinand);
struct nand_device *nand = mtd_to_nanddev(mtd);
- int ret, i;
+ int ret;
/*
* We need a scratch buffer because the spi_mem interface requires that
@@ -1131,22 +1202,10 @@ static int spinand_init(struct spinand_device *spinand)
if (ret)
goto err_free_bufs;
- ret = spinand_init_quad_enable(spinand);
+ ret = spinand_init_flash(spinand);
if (ret)
goto err_free_bufs;
- ret = spinand_upd_cfg(spinand, CFG_OTP_ENABLE, 0);
- if (ret)
- goto err_free_bufs;
-
- ret = spinand_manufacturer_init(spinand);
- if (ret) {
- dev_err(dev,
- "Failed to initialize the SPI NAND chip (err = %d)\n",
- ret);
- goto err_free_bufs;
- }
-
ret = spinand_create_dirmaps(spinand);
if (ret) {
dev_err(dev,
@@ -1155,17 +1214,6 @@ static int spinand_init(struct spinand_device *spinand)
goto err_manuf_cleanup;
}
- /* After power up, all blocks are locked, so unlock them here. */
- for (i = 0; i < nand->memorg.ntargets; i++) {
- ret = spinand_select_target(spinand, i);
- if (ret)
- goto err_manuf_cleanup;
-
- ret = spinand_lock_block(spinand, BL_ALL_UNLOCKED);
- if (ret)
- goto err_manuf_cleanup;
- }
-
ret = nanddev_init(nand, &spinand_ops, THIS_MODULE);
if (ret)
goto err_manuf_cleanup;
@@ -1186,6 +1234,7 @@ static int spinand_init(struct spinand_device *spinand)
mtd->_block_isreserved = spinand_mtd_block_isreserved;
mtd->_erase = spinand_mtd_erase;
mtd->_max_bad_blocks = nanddev_mtd_max_bad_blocks;
+ mtd->_resume = spinand_mtd_resume;
if (nand->ecc.engine) {
ret = mtd_ooblayout_count_freebytes(mtd);
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c
index 6701aaa21a49..a9890350db02 100644
--- a/drivers/mtd/nand/spi/macronix.c
+++ b/drivers/mtd/nand/spi/macronix.c
@@ -186,6 +186,118 @@ static const struct spinand_info macronix_spinand_table[] = {
0 /*SPINAND_HAS_QE_BIT*/,
SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
mx35lf1ge4ab_ecc_get_status)),
+
+ SPINAND_INFO("MX35LF2G14AC",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x20),
+ NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
+ NAND_ECCREQ(4, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF4G24AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb5),
+ NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 2, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF4GE4AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xb7),
+ NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF2G14AC",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa0),
+ NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
+ NAND_ECCREQ(4, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF2G24AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa4),
+ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF2GE4AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa6),
+ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF2GE4AC",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xa2),
+ NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
+ NAND_ECCREQ(4, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF1G14AC",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x90),
+ NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(4, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF1G24AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x94),
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF1GE4AD",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x96),
+ NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+ SPINAND_INFO("MX35UF1GE4AC",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92),
+ NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+ NAND_ECCREQ(4, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
+ mx35lf1ge4ab_ecc_get_status)),
+
};
static const struct spinand_manufacturer_ops macronix_spinand_manuf_ops = {
diff --git a/drivers/mtd/nftlcore.c b/drivers/mtd/nftlcore.c
index bcd0094f172d..913db0dd6a8d 100644
--- a/drivers/mtd/nftlcore.c
+++ b/drivers/mtd/nftlcore.c
@@ -619,7 +619,6 @@ static inline u16 NFTL_findwriteunit(struct NFTLrecord *nftl, unsigned block)
return BLOCK_NIL;
}
//printk("Restarting scan\n");
- lastEUN = BLOCK_NIL;
continue;
}
diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
index 444a77bb7692..75e86ed3e678 100644
--- a/drivers/mtd/nftlmount.c
+++ b/drivers/mtd/nftlmount.c
@@ -188,17 +188,14 @@ device is already correct.
/* memory alloc */
nftl->EUNtable = kmalloc_array(nftl->nb_blocks, sizeof(u16),
GFP_KERNEL);
- if (!nftl->EUNtable) {
- printk(KERN_NOTICE "NFTL: allocation of EUNtable failed\n");
+ if (!nftl->EUNtable)
return -ENOMEM;
- }
nftl->ReplUnitTable = kmalloc_array(nftl->nb_blocks,
sizeof(u16),
GFP_KERNEL);
if (!nftl->ReplUnitTable) {
kfree(nftl->EUNtable);
- printk(KERN_NOTICE "NFTL: allocation of ReplUnitTable failed\n");
return -ENOMEM;
}
@@ -269,7 +266,7 @@ static int check_free_sectors(struct NFTLrecord *nftl, unsigned int address, int
buf = kmalloc(SECTORSIZE + mtd->oobsize, GFP_KERNEL);
if (!buf)
- return -1;
+ return -ENOMEM;
ret = -1;
for (i = 0; i < len; i += SECTORSIZE) {
diff --git a/drivers/mtd/parsers/Kconfig b/drivers/mtd/parsers/Kconfig
index 9babe678c41b..337ea8b9a4c3 100644
--- a/drivers/mtd/parsers/Kconfig
+++ b/drivers/mtd/parsers/Kconfig
@@ -115,7 +115,7 @@ config MTD_AFS_PARTS
config MTD_PARSER_TRX
tristate "Parser for TRX format partitions"
- depends on MTD && (BCM47XX || ARCH_BCM_5301X || COMPILE_TEST)
+ depends on MTD && (BCM47XX || ARCH_BCM_5301X || ARCH_MEDIATEK || COMPILE_TEST)
help
TRX is a firmware format used by Broadcom on their devices. It
may contain up to 3/4 partitions (depending on the version).
diff --git a/drivers/mtd/parsers/parser_trx.c b/drivers/mtd/parsers/parser_trx.c
index 8541182134d4..4814cf218e17 100644
--- a/drivers/mtd/parsers/parser_trx.c
+++ b/drivers/mtd/parsers/parser_trx.c
@@ -51,13 +51,20 @@ static int parser_trx_parse(struct mtd_info *mtd,
const struct mtd_partition **pparts,
struct mtd_part_parser_data *data)
{
+ struct device_node *np = mtd_get_of_node(mtd);
struct mtd_partition *parts;
struct mtd_partition *part;
struct trx_header trx;
size_t bytes_read;
uint8_t curr_part = 0, i = 0;
+ uint32_t trx_magic = TRX_MAGIC;
int err;
+ /* Get different magic from device tree if specified */
+ err = of_property_read_u32(np, "brcm,trx-magic", &trx_magic);
+ if (err != 0 && err != -EINVAL)
+ pr_err("failed to parse \"brcm,trx-magic\" DT attribute, using default: %d\n", err);
+
parts = kcalloc(TRX_PARSER_MAX_PARTS, sizeof(struct mtd_partition),
GFP_KERNEL);
if (!parts)
@@ -70,7 +77,7 @@ static int parser_trx_parse(struct mtd_info *mtd,
return err;
}
- if (trx.magic != TRX_MAGIC) {
+ if (trx.magic != trx_magic) {
kfree(parts);
return -ENOENT;
}
diff --git a/drivers/mtd/parsers/qcomsmempart.c b/drivers/mtd/parsers/qcomsmempart.c
index d9083308f6ba..06a818cd2433 100644
--- a/drivers/mtd/parsers/qcomsmempart.c
+++ b/drivers/mtd/parsers/qcomsmempart.c
@@ -159,6 +159,15 @@ out_free_parts:
return ret;
}
+static void parse_qcomsmem_cleanup(const struct mtd_partition *pparts,
+ int nr_parts)
+{
+ int i;
+
+ for (i = 0; i < nr_parts; i++)
+ kfree(pparts[i].name);
+}
+
static const struct of_device_id qcomsmem_of_match_table[] = {
{ .compatible = "qcom,smem-part" },
{},
@@ -167,6 +176,7 @@ MODULE_DEVICE_TABLE(of, qcomsmem_of_match_table);
static struct mtd_part_parser mtd_parser_qcomsmem = {
.parse_fn = parse_qcomsmem_part,
+ .cleanup = parse_qcomsmem_cleanup,
.name = "qcomsmem",
.of_match_table = qcomsmem_of_match_table,
};
diff --git a/drivers/mtd/parsers/redboot.c b/drivers/mtd/parsers/redboot.c
index 91146bdc4713..feb44a573d44 100644
--- a/drivers/mtd/parsers/redboot.c
+++ b/drivers/mtd/parsers/redboot.c
@@ -17,15 +17,15 @@
#include <linux/module.h>
struct fis_image_desc {
- unsigned char name[16]; // Null terminated name
- uint32_t flash_base; // Address within FLASH of image
- uint32_t mem_base; // Address in memory where it executes
- uint32_t size; // Length of image
- uint32_t entry_point; // Execution entry point
- uint32_t data_length; // Length of actual data
- unsigned char _pad[256-(16+7*sizeof(uint32_t))];
- uint32_t desc_cksum; // Checksum over image descriptor
- uint32_t file_cksum; // Checksum over image data
+ unsigned char name[16]; // Null terminated name
+ u32 flash_base; // Address within FLASH of image
+ u32 mem_base; // Address in memory where it executes
+ u32 size; // Length of image
+ u32 entry_point; // Execution entry point
+ u32 data_length; // Length of actual data
+ unsigned char _pad[256 - (16 + 7 * sizeof(u32))];
+ u32 desc_cksum; // Checksum over image descriptor
+ u32 file_cksum; // Checksum over image data
};
struct fis_list {
@@ -45,6 +45,7 @@ static inline int redboot_checksum(struct fis_image_desc *img)
static void parse_redboot_of(struct mtd_info *master)
{
struct device_node *np;
+ struct device_node *npart;
u32 dirblock;
int ret;
@@ -52,7 +53,11 @@ static void parse_redboot_of(struct mtd_info *master)
if (!np)
return;
- ret = of_property_read_u32(np, "fis-index-block", &dirblock);
+ npart = of_get_child_by_name(np, "partitions");
+ if (!npart)
+ return;
+
+ ret = of_property_read_u32(npart, "fis-index-block", &dirblock);
if (ret)
return;
@@ -85,12 +90,12 @@ static int parse_redboot_partitions(struct mtd_info *master,
parse_redboot_of(master);
- if ( directory < 0 ) {
+ if (directory < 0) {
offset = master->size + directory * master->erasesize;
while (mtd_block_isbad(master, offset)) {
if (!offset) {
- nogood:
- printk(KERN_NOTICE "Failed to find a non-bad block to check for RedBoot partition table\n");
+nogood:
+ pr_notice("Failed to find a non-bad block to check for RedBoot partition table\n");
return -EIO;
}
offset -= master->erasesize;
@@ -108,8 +113,8 @@ static int parse_redboot_partitions(struct mtd_info *master,
if (!buf)
return -ENOMEM;
- printk(KERN_NOTICE "Searching for RedBoot partition table in %s at offset 0x%lx\n",
- master->name, offset);
+ pr_notice("Searching for RedBoot partition table in %s at offset 0x%lx\n",
+ master->name, offset);
ret = mtd_read(master, offset, master->erasesize, &retlen,
(void *)buf);
@@ -145,14 +150,13 @@ static int parse_redboot_partitions(struct mtd_info *master,
&& swab32(buf[i].size) < master->erasesize)) {
int j;
/* Update numslots based on actual FIS directory size */
- numslots = swab32(buf[i].size) / sizeof (struct fis_image_desc);
+ numslots = swab32(buf[i].size) / sizeof(struct fis_image_desc);
for (j = 0; j < numslots; ++j) {
-
/* A single 0xff denotes a deleted entry.
* Two of them in a row is the end of the table.
*/
if (buf[j].name[0] == 0xff) {
- if (buf[j].name[1] == 0xff) {
+ if (buf[j].name[1] == 0xff) {
break;
} else {
continue;
@@ -179,8 +183,8 @@ static int parse_redboot_partitions(struct mtd_info *master,
}
if (i == numslots) {
/* Didn't find it */
- printk(KERN_NOTICE "No RedBoot partition table detected in %s\n",
- master->name);
+ pr_notice("No RedBoot partition table detected in %s\n",
+ master->name);
ret = 0;
goto out;
}
@@ -199,7 +203,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
break;
new_fl = kmalloc(sizeof(struct fis_list), GFP_KERNEL);
- namelen += strlen(buf[i].name)+1;
+ namelen += strlen(buf[i].name) + 1;
if (!new_fl) {
ret = -ENOMEM;
goto out;
@@ -208,13 +212,13 @@ static int parse_redboot_partitions(struct mtd_info *master,
if (data && data->origin)
buf[i].flash_base -= data->origin;
else
- buf[i].flash_base &= master->size-1;
+ buf[i].flash_base &= master->size - 1;
/* I'm sure the JFFS2 code has done me permanent damage.
* I now think the following is _normal_
*/
prev = &fl;
- while(*prev && (*prev)->img->flash_base < new_fl->img->flash_base)
+ while (*prev && (*prev)->img->flash_base < new_fl->img->flash_base)
prev = &(*prev)->next;
new_fl->next = *prev;
*prev = new_fl;
@@ -234,7 +238,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
}
}
#endif
- parts = kzalloc(sizeof(*parts)*nrparts + nulllen + namelen, GFP_KERNEL);
+ parts = kzalloc(sizeof(*parts) * nrparts + nulllen + namelen, GFP_KERNEL);
if (!parts) {
ret = -ENOMEM;
@@ -243,23 +247,22 @@ static int parse_redboot_partitions(struct mtd_info *master,
nullname = (char *)&parts[nrparts];
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
- if (nulllen > 0) {
+ if (nulllen > 0)
strcpy(nullname, nullstring);
- }
#endif
names = nullname + nulllen;
- i=0;
+ i = 0;
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
if (fl->img->flash_base) {
- parts[0].name = nullname;
- parts[0].size = fl->img->flash_base;
- parts[0].offset = 0;
+ parts[0].name = nullname;
+ parts[0].size = fl->img->flash_base;
+ parts[0].offset = 0;
i++;
}
#endif
- for ( ; i<nrparts; i++) {
+ for ( ; i < nrparts; i++) {
parts[i].size = fl->img->size;
parts[i].offset = fl->img->flash_base;
parts[i].name = names;
@@ -267,17 +270,17 @@ static int parse_redboot_partitions(struct mtd_info *master,
strcpy(names, fl->img->name);
#ifdef CONFIG_MTD_REDBOOT_PARTS_READONLY
if (!memcmp(names, "RedBoot", 8) ||
- !memcmp(names, "RedBoot config", 15) ||
- !memcmp(names, "FIS directory", 14)) {
+ !memcmp(names, "RedBoot config", 15) ||
+ !memcmp(names, "FIS directory", 14)) {
parts[i].mask_flags = MTD_WRITEABLE;
}
#endif
- names += strlen(names)+1;
+ names += strlen(names) + 1;
#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
- if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
+ if (fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
i++;
- parts[i].offset = parts[i-1].size + parts[i-1].offset;
+ parts[i].offset = parts[i - 1].size + parts[i - 1].offset;
parts[i].size = fl->next->img->flash_base - parts[i].offset;
parts[i].name = nullname;
}
@@ -291,6 +294,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
out:
while (fl) {
struct fis_list *old = fl;
+
fl = fl->next;
kfree(old);
}
diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index cce3bf6f99b4..6e0d5ce9b010 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -192,11 +192,8 @@ static int scan_header(struct partition *part)
part->sector_map = vmalloc(array_size(sizeof(u_long),
part->sector_count));
- if (!part->sector_map) {
- printk(KERN_ERR PREFIX "'%s': unable to allocate memory for "
- "sector map", part->mbd.mtd->name);
+ if (!part->sector_map)
goto err;
- }
for (i=0; i<part->sector_count; i++)
part->sector_map[i] = -1;
diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index 4d1ae25507ab..0cff2cda1b5a 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -265,7 +265,8 @@ static int sm_read_sector(struct sm_ftl *ftl,
again:
if (try++) {
/* Avoid infinite recursion on CIS reads, sm_recheck_media
- won't help anyway */
+ * won't help anyway
+ */
if (zone == 0 && block == ftl->cis_block && boffset ==
ftl->cis_boffset)
return ret;
@@ -276,7 +277,8 @@ again:
}
/* Unfortunately, oob read will _always_ succeed,
- despite card removal..... */
+ * despite card removal.....
+ */
ret = mtd_read_oob(mtd, sm_mkoffset(ftl, zone, block, boffset), &ops);
/* Test for unknown errors */
@@ -411,9 +413,10 @@ restart:
/* If write fails. try to erase the block */
/* This is safe, because we never write in blocks
- that contain valuable data.
- This is intended to repair block that are marked
- as erased, but that isn't fully erased*/
+ * that contain valuable data.
+ * This is intended to repair block that are marked
+ * as erased, but that isn't fully erased
+ */
if (sm_erase_block(ftl, zone, block, 0))
return -EIO;
@@ -448,7 +451,8 @@ static void sm_mark_block_bad(struct sm_ftl *ftl, int zone, int block)
/* We aren't checking the return value, because we don't care */
/* This also fails on fake xD cards, but I guess these won't expose
- any bad blocks till fail completely */
+ * any bad blocks till fail completely
+ */
for (boffset = 0; boffset < ftl->block_size; boffset += SM_SECTOR_SIZE)
sm_write_sector(ftl, zone, block, boffset, NULL, &oob);
}
@@ -505,7 +509,8 @@ static int sm_check_block(struct sm_ftl *ftl, int zone, int block)
/* First just check that block doesn't look fishy */
/* Only blocks that are valid or are sliced in two parts, are
- accepted */
+ * accepted
+ */
for (boffset = 0; boffset < ftl->block_size;
boffset += SM_SECTOR_SIZE) {
@@ -554,7 +559,8 @@ static const uint8_t cis_signature[] = {
0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20
};
/* Find out media parameters.
- * This ideally has to be based on nand id, but for now device size is enough */
+ * This ideally has to be based on nand id, but for now device size is enough
+ */
static int sm_get_media_info(struct sm_ftl *ftl, struct mtd_info *mtd)
{
int i;
@@ -607,7 +613,8 @@ static int sm_get_media_info(struct sm_ftl *ftl, struct mtd_info *mtd)
}
/* Minimum xD size is 16MiB. Also, all xD cards have standard zone
- sizes. SmartMedia cards exist up to 128 MiB and have same layout*/
+ * sizes. SmartMedia cards exist up to 128 MiB and have same layout
+ */
if (size_in_megs >= 16) {
ftl->zone_count = size_in_megs / 16;
ftl->zone_size = 1024;
@@ -782,7 +789,8 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
}
/* Test to see if block is erased. It is enough to test
- first sector, because erase happens in one shot */
+ * first sector, because erase happens in one shot
+ */
if (sm_block_erased(&oob)) {
kfifo_in(&zone->free_sectors,
(unsigned char *)&block, 2);
@@ -792,7 +800,8 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
/* If block is marked as bad, skip it */
/* This assumes we can trust first sector*/
/* However the way the block valid status is defined, ensures
- very low probability of failure here */
+ * very low probability of failure here
+ */
if (!sm_block_valid(&oob)) {
dbg("PH %04d <-> <marked bad>", block);
continue;
@@ -803,7 +812,8 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
/* Invalid LBA means that block is damaged. */
/* We can try to erase it, or mark it as bad, but
- lets leave that to recovery application */
+ * lets leave that to recovery application
+ */
if (lba == -2 || lba >= ftl->max_lba) {
dbg("PH %04d <-> LBA %04d(bad)", block, lba);
continue;
@@ -811,7 +821,8 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
/* If there is no collision,
- just put the sector in the FTL table */
+ * just put the sector in the FTL table
+ */
if (zone->lba_to_phys_table[lba] < 0) {
dbg_verbose("PH %04d <-> LBA %04d", block, lba);
zone->lba_to_phys_table[lba] = block;
@@ -834,9 +845,9 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
}
/* If both blocks are valid and share same LBA, it means that
- they hold different versions of same data. It not
- known which is more recent, thus just erase one of them
- */
+ * they hold different versions of same data. It not
+ * known which is more recent, thus just erase one of them
+ */
sm_printk("both blocks are valid, erasing the later");
sm_erase_block(ftl, zone_num, block, 1);
}
@@ -845,7 +856,8 @@ static int sm_init_zone(struct sm_ftl *ftl, int zone_num)
zone->initialized = 1;
/* No free sectors, means that the zone is heavily damaged, write won't
- work, but it can still can be (partially) read */
+ * work, but it can still can be (partially) read
+ */
if (!kfifo_len(&zone->free_sectors)) {
sm_printk("no free blocks in zone %d", zone_num);
return 0;
@@ -952,8 +964,9 @@ restart:
/* If there are no spare blocks, */
/* we could still continue by erasing/writing the current block,
- but for such worn out media it doesn't worth the trouble,
- and the dangers */
+ * but for such worn out media it doesn't worth the trouble,
+ * and the dangers
+ */
if (kfifo_out(&zone->free_sectors,
(unsigned char *)&write_sector, 2) != 2) {
dbg("no free sectors for write!");
diff --git a/drivers/mtd/spi-nor/Makefile b/drivers/mtd/spi-nor/Makefile
index 136f245c91dc..6b904e439372 100644
--- a/drivers/mtd/spi-nor/Makefile
+++ b/drivers/mtd/spi-nor/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
-spi-nor-objs := core.o sfdp.o swp.o otp.o
+spi-nor-objs := core.o sfdp.o swp.o otp.o sysfs.o
spi-nor-objs += atmel.o
spi-nor-objs += catalyst.o
spi-nor-objs += eon.o
diff --git a/drivers/mtd/spi-nor/controllers/intel-spi-pci.c b/drivers/mtd/spi-nor/controllers/intel-spi-pci.c
index 825610a2e9dc..1bc53b8bb88a 100644
--- a/drivers/mtd/spi-nor/controllers/intel-spi-pci.c
+++ b/drivers/mtd/spi-nor/controllers/intel-spi-pci.c
@@ -74,6 +74,7 @@ static const struct pci_device_id intel_spi_pci_ids[] = {
{ PCI_VDEVICE(INTEL, 0x4b24), (unsigned long)&bxt_info },
{ PCI_VDEVICE(INTEL, 0x4da4), (unsigned long)&bxt_info },
{ PCI_VDEVICE(INTEL, 0x51a4), (unsigned long)&cnl_info },
+ { PCI_VDEVICE(INTEL, 0x54a4), (unsigned long)&cnl_info },
{ PCI_VDEVICE(INTEL, 0x7aa4), (unsigned long)&cnl_info },
{ PCI_VDEVICE(INTEL, 0xa0a4), (unsigned long)&bxt_info },
{ PCI_VDEVICE(INTEL, 0xa1a4), (unsigned long)&bxt_info },
diff --git a/drivers/mtd/spi-nor/controllers/nxp-spifi.c b/drivers/mtd/spi-nor/controllers/nxp-spifi.c
index 5703e8313980..2635c80231bb 100644
--- a/drivers/mtd/spi-nor/controllers/nxp-spifi.c
+++ b/drivers/mtd/spi-nor/controllers/nxp-spifi.c
@@ -326,7 +326,7 @@ static int nxp_spifi_setup_flash(struct nxp_spifi *spifi,
ctrl |= SPIFI_CTRL_DUAL;
}
- switch (mode & (SPI_CPHA | SPI_CPOL)) {
+ switch (mode & SPI_MODE_X_MASK) {
case SPI_MODE_0:
ctrl &= ~SPIFI_CTRL_MODE3;
break;
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index bd2c7717eb10..cc08bd707378 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -1318,7 +1318,7 @@ static u32 spi_nor_convert_addr(struct spi_nor *nor, loff_t addr)
/*
* Initiate the erasure of a single sector
*/
-static int spi_nor_erase_sector(struct spi_nor *nor, u32 addr)
+int spi_nor_erase_sector(struct spi_nor *nor, u32 addr)
{
int i;
@@ -1411,9 +1411,7 @@ spi_nor_find_best_erase_type(const struct spi_nor_erase_map *map,
continue;
spi_nor_div_by_erase_size(erase, addr, &rem);
- if (rem)
- continue;
- else
+ if (!rem)
return erase;
}
@@ -2839,6 +2837,21 @@ static int spi_nor_init(struct spi_nor *nor)
return 0;
}
+/**
+ * spi_nor_soft_reset() - Perform a software reset
+ * @nor: pointer to 'struct spi_nor'
+ *
+ * Performs a "Soft Reset and Enter Default Protocol Mode" sequence which resets
+ * the device to its power-on-reset state. This is useful when the software has
+ * made some changes to device (volatile) registers and needs to reset it before
+ * shutting down, for example.
+ *
+ * Not every flash supports this sequence. The same set of opcodes might be used
+ * for some other operation on a flash that does not support this. Support for
+ * this sequence can be discovered via SFDP in the BFPT table.
+ *
+ * Return: 0 on success, -errno otherwise.
+ */
static void spi_nor_soft_reset(struct spi_nor *nor)
{
struct spi_mem_op op;
@@ -3444,6 +3457,7 @@ static struct spi_mem_driver spi_nor_driver = {
.driver = {
.name = "spi-nor",
.of_match_table = spi_nor_of_table,
+ .dev_groups = spi_nor_sysfs_groups,
},
.id_table = spi_nor_dev_ids,
},
diff --git a/drivers/mtd/spi-nor/core.h b/drivers/mtd/spi-nor/core.h
index 28a2e0be97a3..3348e1dd1445 100644
--- a/drivers/mtd/spi-nor/core.h
+++ b/drivers/mtd/spi-nor/core.h
@@ -207,6 +207,7 @@ struct spi_nor_otp_organization {
* @read: read from the SPI NOR OTP area.
* @write: write to the SPI NOR OTP area.
* @lock: lock an OTP region.
+ * @erase: erase an OTP region.
* @is_locked: check if an OTP region of the SPI NOR is locked.
*/
struct spi_nor_otp_ops {
@@ -214,6 +215,7 @@ struct spi_nor_otp_ops {
int (*write)(struct spi_nor *nor, loff_t addr, size_t len,
const u8 *buf);
int (*lock)(struct spi_nor *nor, unsigned int region);
+ int (*erase)(struct spi_nor *nor, loff_t addr);
int (*is_locked)(struct spi_nor *nor, unsigned int region);
};
@@ -459,6 +461,16 @@ struct spi_nor_manufacturer {
const struct spi_nor_fixups *fixups;
};
+/**
+ * struct sfdp - SFDP data
+ * @num_dwords: number of entries in the dwords array
+ * @dwords: array of double words of the SFDP data
+ */
+struct sfdp {
+ size_t num_dwords;
+ u32 *dwords;
+};
+
/* Manufacturer drivers. */
extern const struct spi_nor_manufacturer spi_nor_atmel;
extern const struct spi_nor_manufacturer spi_nor_catalyst;
@@ -478,6 +490,8 @@ extern const struct spi_nor_manufacturer spi_nor_winbond;
extern const struct spi_nor_manufacturer spi_nor_xilinx;
extern const struct spi_nor_manufacturer spi_nor_xmc;
+extern const struct attribute_group *spi_nor_sysfs_groups[];
+
void spi_nor_spimem_setup_op(const struct spi_nor *nor,
struct spi_mem_op *op,
const enum spi_nor_protocol proto);
@@ -503,10 +517,12 @@ ssize_t spi_nor_read_data(struct spi_nor *nor, loff_t from, size_t len,
u8 *buf);
ssize_t spi_nor_write_data(struct spi_nor *nor, loff_t to, size_t len,
const u8 *buf);
+int spi_nor_erase_sector(struct spi_nor *nor, u32 addr);
int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf);
int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len,
const u8 *buf);
+int spi_nor_otp_erase_secr(struct spi_nor *nor, loff_t addr);
int spi_nor_otp_lock_sr2(struct spi_nor *nor, unsigned int region);
int spi_nor_otp_is_locked_sr2(struct spi_nor *nor, unsigned int region);
diff --git a/drivers/mtd/spi-nor/macronix.c b/drivers/mtd/spi-nor/macronix.c
index 42c2cf31702e..27498ed0cc0d 100644
--- a/drivers/mtd/spi-nor/macronix.c
+++ b/drivers/mtd/spi-nor/macronix.c
@@ -49,7 +49,8 @@ static const struct flash_info macronix_parts[] = {
{ "mx25u4035", INFO(0xc22533, 0, 64 * 1024, 8, SECT_4K) },
{ "mx25u8035", INFO(0xc22534, 0, 64 * 1024, 16, SECT_4K) },
{ "mx25u6435f", INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) },
- { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, SECT_4K) },
+ { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, SECT_4K |
+ SPI_NOR_HAS_LOCK | SPI_NOR_4BIT_BP) },
{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
{ "mx25r1635f", INFO(0xc22815, 0, 64 * 1024, 32,
SECT_4K | SPI_NOR_DUAL_READ |
@@ -72,7 +73,7 @@ static const struct flash_info macronix_parts[] = {
SECT_4K | SPI_NOR_DUAL_READ |
SPI_NOR_QUAD_READ) },
{ "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
- { "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024,
+ { "mx66l51235f", INFO(0xc2201a, 0, 64 * 1024, 1024,
SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
SPI_NOR_4B_OPCODES) },
{ "mx66u51235f", INFO(0xc2253a, 0, 64 * 1024, 1024,
diff --git a/drivers/mtd/spi-nor/otp.c b/drivers/mtd/spi-nor/otp.c
index fcf38d260345..983e40b19134 100644
--- a/drivers/mtd/spi-nor/otp.c
+++ b/drivers/mtd/spi-nor/otp.c
@@ -15,14 +15,21 @@
#define spi_nor_otp_n_regions(nor) ((nor)->params->otp.org->n_regions)
/**
- * spi_nor_otp_read_secr() - read OTP data
+ * spi_nor_otp_read_secr() - read security register
* @nor: pointer to 'struct spi_nor'
- * @from: offset to read from
+ * @addr: offset to read from
* @len: number of bytes to read
* @buf: pointer to dst buffer
*
- * Read OTP data from one region by using the SPINOR_OP_RSECR commands. This
- * method is used on GigaDevice and Winbond flashes.
+ * Read a security register by using the SPINOR_OP_RSECR commands.
+ *
+ * In Winbond/GigaDevice datasheets the term "security register" stands for
+ * an one-time-programmable memory area, consisting of multiple bytes (usually
+ * 256). Thus one "security register" maps to one OTP region.
+ *
+ * This method is used on GigaDevice and Winbond flashes.
+ *
+ * Please note, the read must not span multiple registers.
*
* Return: number of bytes read successfully, -errno otherwise
*/
@@ -40,7 +47,6 @@ int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf)
rdesc = nor->dirmap.rdesc;
nor->read_opcode = SPINOR_OP_RSECR;
- nor->addr_width = 3;
nor->read_dummy = 8;
nor->read_proto = SNOR_PROTO_1_1_1;
nor->dirmap.rdesc = NULL;
@@ -57,16 +63,20 @@ int spi_nor_otp_read_secr(struct spi_nor *nor, loff_t addr, size_t len, u8 *buf)
}
/**
- * spi_nor_otp_write_secr() - write OTP data
+ * spi_nor_otp_write_secr() - write security register
* @nor: pointer to 'struct spi_nor'
- * @to: offset to write to
+ * @addr: offset to write to
* @len: number of bytes to write
* @buf: pointer to src buffer
*
- * Write OTP data to one region by using the SPINOR_OP_PSECR commands. This
- * method is used on GigaDevice and Winbond flashes.
+ * Write a security register by using the SPINOR_OP_PSECR commands.
+ *
+ * For more information on the term "security register", see the documentation
+ * of spi_nor_otp_read_secr().
*
- * Please note, the write must not span multiple OTP regions.
+ * This method is used on GigaDevice and Winbond flashes.
+ *
+ * Please note, the write must not span multiple registers.
*
* Return: number of bytes written successfully, -errno otherwise
*/
@@ -84,13 +94,12 @@ int spi_nor_otp_write_secr(struct spi_nor *nor, loff_t addr, size_t len,
wdesc = nor->dirmap.wdesc;
nor->program_opcode = SPINOR_OP_PSECR;
- nor->addr_width = 3;
nor->write_proto = SNOR_PROTO_1_1_1;
nor->dirmap.wdesc = NULL;
/*
* We only support a write to one single page. For now all winbond
- * flashes only have one page per OTP region.
+ * flashes only have one page per security register.
*/
ret = spi_nor_write_enable(nor);
if (ret)
@@ -111,6 +120,38 @@ out:
return ret ?: written;
}
+/**
+ * spi_nor_otp_erase_secr() - erase a security register
+ * @nor: pointer to 'struct spi_nor'
+ * @addr: offset of the security register to be erased
+ *
+ * Erase a security register by using the SPINOR_OP_ESECR command.
+ *
+ * For more information on the term "security register", see the documentation
+ * of spi_nor_otp_read_secr().
+ *
+ * This method is used on GigaDevice and Winbond flashes.
+ *
+ * Return: 0 on success, -errno otherwise
+ */
+int spi_nor_otp_erase_secr(struct spi_nor *nor, loff_t addr)
+{
+ u8 erase_opcode = nor->erase_opcode;
+ int ret;
+
+ ret = spi_nor_write_enable(nor);
+ if (ret)
+ return ret;
+
+ nor->erase_opcode = SPINOR_OP_ESECR;
+ ret = spi_nor_erase_sector(nor, addr);
+ nor->erase_opcode = erase_opcode;
+ if (ret)
+ return ret;
+
+ return spi_nor_wait_till_ready(nor);
+}
+
static int spi_nor_otp_lock_bit_cr(unsigned int region)
{
static const int lock_bits[] = { SR2_LB1, SR2_LB2, SR2_LB3 };
@@ -240,6 +281,29 @@ out:
return ret;
}
+static int spi_nor_mtd_otp_range_is_locked(struct spi_nor *nor, loff_t ofs,
+ size_t len)
+{
+ const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ unsigned int region;
+ int locked;
+
+ /*
+ * If any of the affected OTP regions are locked the entire range is
+ * considered locked.
+ */
+ for (region = spi_nor_otp_offset_to_region(nor, ofs);
+ region <= spi_nor_otp_offset_to_region(nor, ofs + len - 1);
+ region++) {
+ locked = ops->is_locked(nor, region);
+ /* take the branch it is locked or in case of an error */
+ if (locked)
+ return locked;
+ }
+
+ return 0;
+}
+
static int spi_nor_mtd_otp_read_write(struct mtd_info *mtd, loff_t ofs,
size_t total_len, size_t *retlen,
const u8 *buf, bool is_write)
@@ -255,14 +319,26 @@ static int spi_nor_mtd_otp_read_write(struct mtd_info *mtd, loff_t ofs,
if (ofs < 0 || ofs >= spi_nor_otp_size(nor))
return 0;
+ /* don't access beyond the end */
+ total_len = min_t(size_t, total_len, spi_nor_otp_size(nor) - ofs);
+
+ if (!total_len)
+ return 0;
+
ret = spi_nor_lock_and_prep(nor);
if (ret)
return ret;
- /* don't access beyond the end */
- total_len = min_t(size_t, total_len, spi_nor_otp_size(nor) - ofs);
+ if (is_write) {
+ ret = spi_nor_mtd_otp_range_is_locked(nor, ofs, total_len);
+ if (ret < 0) {
+ goto out;
+ } else if (ret) {
+ ret = -EROFS;
+ goto out;
+ }
+ }
- *retlen = 0;
while (total_len) {
/*
* The OTP regions are mapped into a contiguous area starting
@@ -316,6 +392,59 @@ static int spi_nor_mtd_otp_write(struct mtd_info *mtd, loff_t to, size_t len,
return spi_nor_mtd_otp_read_write(mtd, to, len, retlen, buf, true);
}
+static int spi_nor_mtd_otp_erase(struct mtd_info *mtd, loff_t from, size_t len)
+{
+ struct spi_nor *nor = mtd_to_spi_nor(mtd);
+ const struct spi_nor_otp_ops *ops = nor->params->otp.ops;
+ const size_t rlen = spi_nor_otp_region_len(nor);
+ unsigned int region;
+ loff_t rstart;
+ int ret;
+
+ /* OTP erase is optional */
+ if (!ops->erase)
+ return -EOPNOTSUPP;
+
+ if (!len)
+ return 0;
+
+ if (from < 0 || (from + len) > spi_nor_otp_size(nor))
+ return -EINVAL;
+
+ /* the user has to explicitly ask for whole regions */
+ if (!IS_ALIGNED(len, rlen) || !IS_ALIGNED(from, rlen))
+ return -EINVAL;
+
+ ret = spi_nor_lock_and_prep(nor);
+ if (ret)
+ return ret;
+
+ ret = spi_nor_mtd_otp_range_is_locked(nor, from, len);
+ if (ret < 0) {
+ goto out;
+ } else if (ret) {
+ ret = -EROFS;
+ goto out;
+ }
+
+ while (len) {
+ region = spi_nor_otp_offset_to_region(nor, from);
+ rstart = spi_nor_otp_region_start(nor, region);
+
+ ret = ops->erase(nor, rstart);
+ if (ret)
+ goto out;
+
+ len -= rlen;
+ from += rlen;
+ }
+
+out:
+ spi_nor_unlock_and_unprep(nor);
+
+ return ret;
+}
+
static int spi_nor_mtd_otp_lock(struct mtd_info *mtd, loff_t from, size_t len)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
@@ -374,4 +503,5 @@ void spi_nor_otp_init(struct spi_nor *nor)
mtd->_read_user_prot_reg = spi_nor_mtd_otp_read;
mtd->_write_user_prot_reg = spi_nor_mtd_otp_write;
mtd->_lock_user_prot_reg = spi_nor_mtd_otp_lock;
+ mtd->_erase_user_prot_reg = spi_nor_mtd_otp_erase;
}
diff --git a/drivers/mtd/spi-nor/sfdp.c b/drivers/mtd/spi-nor/sfdp.c
index 23c28e91f698..c500c2118a5d 100644
--- a/drivers/mtd/spi-nor/sfdp.c
+++ b/drivers/mtd/spi-nor/sfdp.c
@@ -16,6 +16,7 @@
(((p)->parameter_table_pointer[2] << 16) | \
((p)->parameter_table_pointer[1] << 8) | \
((p)->parameter_table_pointer[0] << 0))
+#define SFDP_PARAM_HEADER_PARAM_LEN(p) ((p)->length * 4)
#define SFDP_BFPT_ID 0xff00 /* Basic Flash Parameter Table */
#define SFDP_SECTOR_MAP_ID 0xff81 /* Sector Map Table */
@@ -1245,6 +1246,8 @@ int spi_nor_parse_sfdp(struct spi_nor *nor)
struct sfdp_parameter_header *param_headers = NULL;
struct sfdp_header header;
struct device *dev = nor->dev;
+ struct sfdp *sfdp;
+ size_t sfdp_size;
size_t psize;
int i, err;
@@ -1267,6 +1270,9 @@ int spi_nor_parse_sfdp(struct spi_nor *nor)
bfpt_header->major != SFDP_JESD216_MAJOR)
return -EINVAL;
+ sfdp_size = SFDP_PARAM_HEADER_PTP(bfpt_header) +
+ SFDP_PARAM_HEADER_PARAM_LEN(bfpt_header);
+
/*
* Allocate memory then read all parameter headers with a single
* Read SFDP command. These parameter headers will actually be parsed
@@ -1294,6 +1300,58 @@ int spi_nor_parse_sfdp(struct spi_nor *nor)
}
/*
+ * Cache the complete SFDP data. It is not (easily) possible to fetch
+ * SFDP after probe time and we need it for the sysfs access.
+ */
+ for (i = 0; i < header.nph; i++) {
+ param_header = &param_headers[i];
+ sfdp_size = max_t(size_t, sfdp_size,
+ SFDP_PARAM_HEADER_PTP(param_header) +
+ SFDP_PARAM_HEADER_PARAM_LEN(param_header));
+ }
+
+ /*
+ * Limit the total size to a reasonable value to avoid allocating too
+ * much memory just of because the flash returned some insane values.
+ */
+ if (sfdp_size > PAGE_SIZE) {
+ dev_dbg(dev, "SFDP data (%zu) too big, truncating\n",
+ sfdp_size);
+ sfdp_size = PAGE_SIZE;
+ }
+
+ sfdp = devm_kzalloc(dev, sizeof(*sfdp), GFP_KERNEL);
+ if (!sfdp) {
+ err = -ENOMEM;
+ goto exit;
+ }
+
+ /*
+ * The SFDP is organized in chunks of DWORDs. Thus, in theory, the
+ * sfdp_size should be a multiple of DWORDs. But in case a flash
+ * is not spec compliant, make sure that we have enough space to store
+ * the complete SFDP data.
+ */
+ sfdp->num_dwords = DIV_ROUND_UP(sfdp_size, sizeof(*sfdp->dwords));
+ sfdp->dwords = devm_kcalloc(dev, sfdp->num_dwords,
+ sizeof(*sfdp->dwords), GFP_KERNEL);
+ if (!sfdp->dwords) {
+ err = -ENOMEM;
+ devm_kfree(dev, sfdp);
+ goto exit;
+ }
+
+ err = spi_nor_read_sfdp(nor, 0, sfdp_size, sfdp->dwords);
+ if (err < 0) {
+ dev_dbg(dev, "failed to read SFDP data\n");
+ devm_kfree(dev, sfdp->dwords);
+ devm_kfree(dev, sfdp);
+ goto exit;
+ }
+
+ nor->sfdp = sfdp;
+
+ /*
* Check other parameter headers to get the latest revision of
* the basic flash parameter table.
*/
diff --git a/drivers/mtd/spi-nor/sysfs.c b/drivers/mtd/spi-nor/sysfs.c
new file mode 100644
index 000000000000..9aec9d8a98ad
--- /dev/null
+++ b/drivers/mtd/spi-nor/sysfs.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/mtd/spi-nor.h>
+#include <linux/spi/spi.h>
+#include <linux/spi/spi-mem.h>
+#include <linux/sysfs.h>
+
+#include "core.h"
+
+static ssize_t manufacturer_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct spi_mem *spimem = spi_get_drvdata(spi);
+ struct spi_nor *nor = spi_mem_get_drvdata(spimem);
+
+ return sysfs_emit(buf, "%s\n", nor->manufacturer->name);
+}
+static DEVICE_ATTR_RO(manufacturer);
+
+static ssize_t partname_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct spi_mem *spimem = spi_get_drvdata(spi);
+ struct spi_nor *nor = spi_mem_get_drvdata(spimem);
+
+ return sysfs_emit(buf, "%s\n", nor->info->name);
+}
+static DEVICE_ATTR_RO(partname);
+
+static ssize_t jedec_id_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct spi_mem *spimem = spi_get_drvdata(spi);
+ struct spi_nor *nor = spi_mem_get_drvdata(spimem);
+
+ return sysfs_emit(buf, "%*phN\n", nor->info->id_len, nor->info->id);
+}
+static DEVICE_ATTR_RO(jedec_id);
+
+static struct attribute *spi_nor_sysfs_entries[] = {
+ &dev_attr_manufacturer.attr,
+ &dev_attr_partname.attr,
+ &dev_attr_jedec_id.attr,
+ NULL
+};
+
+static ssize_t sfdp_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t off, size_t count)
+{
+ struct spi_device *spi = to_spi_device(kobj_to_dev(kobj));
+ struct spi_mem *spimem = spi_get_drvdata(spi);
+ struct spi_nor *nor = spi_mem_get_drvdata(spimem);
+ struct sfdp *sfdp = nor->sfdp;
+ size_t sfdp_size = sfdp->num_dwords * sizeof(*sfdp->dwords);
+
+ return memory_read_from_buffer(buf, count, &off, nor->sfdp->dwords,
+ sfdp_size);
+}
+static BIN_ATTR_RO(sfdp, 0);
+
+static struct bin_attribute *spi_nor_sysfs_bin_entries[] = {
+ &bin_attr_sfdp,
+ NULL
+};
+
+static umode_t spi_nor_sysfs_is_bin_visible(struct kobject *kobj,
+ struct bin_attribute *attr, int n)
+{
+ struct spi_device *spi = to_spi_device(kobj_to_dev(kobj));
+ struct spi_mem *spimem = spi_get_drvdata(spi);
+ struct spi_nor *nor = spi_mem_get_drvdata(spimem);
+
+ if (attr == &bin_attr_sfdp && nor->sfdp)
+ return 0444;
+
+ return 0;
+}
+
+static const struct attribute_group spi_nor_sysfs_group = {
+ .name = "spi-nor",
+ .is_bin_visible = spi_nor_sysfs_is_bin_visible,
+ .attrs = spi_nor_sysfs_entries,
+ .bin_attrs = spi_nor_sysfs_bin_entries,
+};
+
+const struct attribute_group *spi_nor_sysfs_groups[] = {
+ &spi_nor_sysfs_group,
+ NULL
+};
diff --git a/drivers/mtd/spi-nor/winbond.c b/drivers/mtd/spi-nor/winbond.c
index 9a81c67a60c6..96573f61caf5 100644
--- a/drivers/mtd/spi-nor/winbond.c
+++ b/drivers/mtd/spi-nor/winbond.c
@@ -139,6 +139,7 @@ static int winbond_set_4byte_addr_mode(struct spi_nor *nor, bool enable)
static const struct spi_nor_otp_ops winbond_otp_ops = {
.read = spi_nor_otp_read_secr,
.write = spi_nor_otp_write_secr,
+ .erase = spi_nor_otp_erase_secr,
.lock = spi_nor_otp_lock_sr2,
.is_locked = spi_nor_otp_is_locked_sr2,
};
diff --git a/drivers/mtd/tests/oobtest.c b/drivers/mtd/tests/oobtest.c
index c71daa89bfce..532997e10e29 100644
--- a/drivers/mtd/tests/oobtest.c
+++ b/drivers/mtd/tests/oobtest.c
@@ -506,7 +506,6 @@ static int __init mtd_oobtest_init(void)
err = mtd_write_oob(mtd, addr0, &ops);
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: can write past end of OOB\n");
errcnt += 1;
@@ -529,7 +528,6 @@ static int __init mtd_oobtest_init(void)
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: can read past end of OOB\n");
errcnt += 1;
@@ -553,7 +551,6 @@ static int __init mtd_oobtest_init(void)
err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: wrote past end of device\n");
errcnt += 1;
@@ -576,7 +573,6 @@ static int __init mtd_oobtest_init(void)
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: read past end of device\n");
errcnt += 1;
@@ -600,7 +596,6 @@ static int __init mtd_oobtest_init(void)
err = mtd_write_oob(mtd, mtd->size - mtd->writesize, &ops);
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: wrote past end of device\n");
errcnt += 1;
@@ -623,7 +618,6 @@ static int __init mtd_oobtest_init(void)
if (err) {
pr_info("error occurred as expected\n");
- err = 0;
} else {
pr_err("error: read past end of device\n");
errcnt += 1;
@@ -701,6 +695,7 @@ static int __init mtd_oobtest_init(void)
(long long)addr);
errcnt += 1;
if (errcnt > 1000) {
+ err = -EINVAL;
pr_err("error: too many errors\n");
goto out;
}
diff --git a/drivers/mtd/tests/torturetest.c b/drivers/mtd/tests/torturetest.c
index 6787ac5471a9..841689b4d86d 100644
--- a/drivers/mtd/tests/torturetest.c
+++ b/drivers/mtd/tests/torturetest.c
@@ -230,8 +230,6 @@ static int __init tort_init(void)
if (!bad_ebs)
goto out_check_buf;
- err = 0;
-
/* Initialize patterns */
memset(patt_FF, 0xFF, mtd->erasesize);
for (i = 0; i < mtd->erasesize / pgsize; i++) {
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index bca671ff4e54..62d363a399d3 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -789,7 +789,9 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
nvmem->reg_write = config->reg_write;
nvmem->keepout = config->keepout;
nvmem->nkeepout = config->nkeepout;
- if (!config->no_of_node)
+ if (config->of_node)
+ nvmem->dev.of_node = config->of_node;
+ else if (!config->no_of_node)
nvmem->dev.of_node = config->dev->of_node;
switch (config->id) {
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index a89955f3cbc8..88227044fc86 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -380,6 +380,8 @@ struct mtd_info {
int usecount;
struct mtd_debug_info dbg;
struct nvmem_device *nvmem;
+ struct nvmem_device *otp_user_nvmem;
+ struct nvmem_device *otp_factory_nvmem;
/*
* Parent device from the MTD partition point of view.
diff --git a/include/linux/mtd/onfi.h b/include/linux/mtd/onfi.h
index 339ac798568e..a7376f9beddf 100644
--- a/include/linux/mtd/onfi.h
+++ b/include/linux/mtd/onfi.h
@@ -11,6 +11,7 @@
#define __LINUX_MTD_ONFI_H
#include <linux/types.h>
+#include <linux/bitfield.h>
/* ONFI version bits */
#define ONFI_VERSION_1_0 BIT(1)
@@ -24,17 +25,22 @@
#define ONFI_VERSION_4_0 BIT(9)
/* ONFI features */
-#define ONFI_FEATURE_16_BIT_BUS (1 << 0)
-#define ONFI_FEATURE_EXT_PARAM_PAGE (1 << 7)
+#define ONFI_FEATURE_16_BIT_BUS BIT(0)
+#define ONFI_FEATURE_NV_DDR BIT(5)
+#define ONFI_FEATURE_EXT_PARAM_PAGE BIT(7)
/* ONFI timing mode, used in both asynchronous and synchronous mode */
-#define ONFI_TIMING_MODE_0 (1 << 0)
-#define ONFI_TIMING_MODE_1 (1 << 1)
-#define ONFI_TIMING_MODE_2 (1 << 2)
-#define ONFI_TIMING_MODE_3 (1 << 3)
-#define ONFI_TIMING_MODE_4 (1 << 4)
-#define ONFI_TIMING_MODE_5 (1 << 5)
-#define ONFI_TIMING_MODE_UNKNOWN (1 << 6)
+#define ONFI_DATA_INTERFACE_SDR 0
+#define ONFI_DATA_INTERFACE_NVDDR BIT(4)
+#define ONFI_DATA_INTERFACE_NVDDR2 BIT(5)
+#define ONFI_TIMING_MODE_0 BIT(0)
+#define ONFI_TIMING_MODE_1 BIT(1)
+#define ONFI_TIMING_MODE_2 BIT(2)
+#define ONFI_TIMING_MODE_3 BIT(3)
+#define ONFI_TIMING_MODE_4 BIT(4)
+#define ONFI_TIMING_MODE_5 BIT(5)
+#define ONFI_TIMING_MODE_UNKNOWN BIT(6)
+#define ONFI_TIMING_MODE_PARAM(x) FIELD_GET(GENMASK(3, 0), (x))
/* ONFI feature number/address */
#define ONFI_FEATURE_NUMBER 256
@@ -49,7 +55,7 @@
#define ONFI_SUBFEATURE_PARAM_LEN 4
/* ONFI optional commands SET/GET FEATURES supported? */
-#define ONFI_OPT_CMD_SET_GET_FEATURES (1 << 2)
+#define ONFI_OPT_CMD_SET_GET_FEATURES BIT(2)
struct nand_onfi_params {
/* rev info and features block */
@@ -93,14 +99,15 @@ struct nand_onfi_params {
/* electrical parameter block */
u8 io_pin_capacitance_max;
- __le16 async_timing_mode;
+ __le16 sdr_timing_modes;
__le16 program_cache_timing_mode;
__le16 t_prog;
__le16 t_bers;
__le16 t_r;
__le16 t_ccs;
- __le16 src_sync_timing_mode;
- u8 src_ssync_features;
+ u8 nvddr_timing_modes;
+ u8 nvddr2_timing_modes;
+ u8 nvddr_nvddr2_features;
__le16 clk_pin_capacitance_typ;
__le16 io_pin_capacitance_typ;
__le16 input_pin_capacitance_typ;
@@ -160,7 +167,9 @@ struct onfi_ext_param_page {
* @tBERS: Block erase time
* @tR: Page read time
* @tCCS: Change column setup time
- * @async_timing_mode: Supported asynchronous timing mode
+ * @fast_tCAD: Command/Address/Data slow or fast delay (NV-DDR only)
+ * @sdr_timing_modes: Supported asynchronous/SDR timing modes
+ * @nvddr_timing_modes: Supported source synchronous/NV-DDR timing modes
* @vendor_revision: Vendor specific revision number
* @vendor: Vendor specific data
*/
@@ -170,7 +179,9 @@ struct onfi_params {
u16 tBERS;
u16 tR;
u16 tCCS;
- u16 async_timing_mode;
+ bool fast_tCAD;
+ u16 sdr_timing_modes;
+ u16 nvddr_timing_modes;
u16 vendor_revision;
u8 vendor[88];
};
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 29df2f43dcb5..b2f9dd3cbd69 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -24,6 +24,7 @@
#include <linux/types.h>
struct nand_chip;
+struct gpio_desc;
/* The maximum number of NAND chips in an array */
#define NAND_MAX_CHIPS 8
@@ -385,8 +386,8 @@ struct nand_ecc_ctrl {
* This struct defines the timing requirements of a SDR NAND chip.
* These information can be found in every NAND datasheets and the timings
* meaning are described in the ONFI specifications:
- * www.onfi.org/~/media/ONFI/specs/onfi_3_1_spec.pdf (chapter 4.15 Timing
- * Parameters)
+ * https://media-www.micron.com/-/media/client/onfi/specs/onfi_3_1_spec.pdf
+ * (chapter 4.15 Timing Parameters)
*
* All these timings are expressed in picoseconds.
*
@@ -472,11 +473,127 @@ struct nand_sdr_timings {
};
/**
+ * struct nand_nvddr_timings - NV-DDR NAND chip timings
+ *
+ * This struct defines the timing requirements of a NV-DDR NAND data interface.
+ * These information can be found in every NAND datasheets and the timings
+ * meaning are described in the ONFI specifications:
+ * https://media-www.micron.com/-/media/client/onfi/specs/onfi_4_1_gold.pdf
+ * (chapter 4.18.2 NV-DDR)
+ *
+ * All these timings are expressed in picoseconds.
+ *
+ * @tBERS_max: Block erase time
+ * @tCCS_min: Change column setup time
+ * @tPROG_max: Page program time
+ * @tR_max: Page read time
+ * @tAC_min: Access window of DQ[7:0] from CLK
+ * @tAC_max: Access window of DQ[7:0] from CLK
+ * @tADL_min: ALE to data loading time
+ * @tCAD_min: Command, Address, Data delay
+ * @tCAH_min: Command/Address DQ hold time
+ * @tCALH_min: W/R_n, CLE and ALE hold time
+ * @tCALS_min: W/R_n, CLE and ALE setup time
+ * @tCAS_min: Command/address DQ setup time
+ * @tCEH_min: CE# high hold time
+ * @tCH_min: CE# hold time
+ * @tCK_min: Average clock cycle time
+ * @tCS_min: CE# setup time
+ * @tDH_min: Data hold time
+ * @tDQSCK_min: Start of the access window of DQS from CLK
+ * @tDQSCK_max: End of the access window of DQS from CLK
+ * @tDQSD_min: Min W/R_n low to DQS/DQ driven by device
+ * @tDQSD_max: Max W/R_n low to DQS/DQ driven by device
+ * @tDQSHZ_max: W/R_n high to DQS/DQ tri-state by device
+ * @tDQSQ_max: DQS-DQ skew, DQS to last DQ valid, per access
+ * @tDS_min: Data setup time
+ * @tDSC_min: DQS cycle time
+ * @tFEAT_max: Busy time for Set Features and Get Features
+ * @tITC_max: Interface and Timing Mode Change time
+ * @tQHS_max: Data hold skew factor
+ * @tRHW_min: Data output cycle to command, address, or data input cycle
+ * @tRR_min: Ready to RE# low (data only)
+ * @tRST_max: Device reset time, measured from the falling edge of R/B# to the
+ * rising edge of R/B#.
+ * @tWB_max: WE# high to SR[6] low
+ * @tWHR_min: WE# high to RE# low
+ * @tWRCK_min: W/R_n low to data output cycle
+ * @tWW_min: WP# transition to WE# low
+ */
+struct nand_nvddr_timings {
+ u64 tBERS_max;
+ u32 tCCS_min;
+ u64 tPROG_max;
+ u64 tR_max;
+ u32 tAC_min;
+ u32 tAC_max;
+ u32 tADL_min;
+ u32 tCAD_min;
+ u32 tCAH_min;
+ u32 tCALH_min;
+ u32 tCALS_min;
+ u32 tCAS_min;
+ u32 tCEH_min;
+ u32 tCH_min;
+ u32 tCK_min;
+ u32 tCS_min;
+ u32 tDH_min;
+ u32 tDQSCK_min;
+ u32 tDQSCK_max;
+ u32 tDQSD_min;
+ u32 tDQSD_max;
+ u32 tDQSHZ_max;
+ u32 tDQSQ_max;
+ u32 tDS_min;
+ u32 tDSC_min;
+ u32 tFEAT_max;
+ u32 tITC_max;
+ u32 tQHS_max;
+ u32 tRHW_min;
+ u32 tRR_min;
+ u32 tRST_max;
+ u32 tWB_max;
+ u32 tWHR_min;
+ u32 tWRCK_min;
+ u32 tWW_min;
+};
+
+/*
+ * While timings related to the data interface itself are mostly different
+ * between SDR and NV-DDR, timings related to the internal chip behavior are
+ * common. IOW, the following entries which describe the internal delays have
+ * the same definition and are shared in both SDR and NV-DDR timing structures:
+ * - tADL_min
+ * - tBERS_max
+ * - tCCS_min
+ * - tFEAT_max
+ * - tPROG_max
+ * - tR_max
+ * - tRR_min
+ * - tRST_max
+ * - tWB_max
+ *
+ * The below macros return the value of a given timing, no matter the interface.
+ */
+#define NAND_COMMON_TIMING_PS(conf, timing_name) \
+ nand_interface_is_sdr(conf) ? \
+ nand_get_sdr_timings(conf)->timing_name : \
+ nand_get_nvddr_timings(conf)->timing_name
+
+#define NAND_COMMON_TIMING_MS(conf, timing_name) \
+ PSEC_TO_MSEC(NAND_COMMON_TIMING_PS((conf), timing_name))
+
+#define NAND_COMMON_TIMING_NS(conf, timing_name) \
+ PSEC_TO_NSEC(NAND_COMMON_TIMING_PS((conf), timing_name))
+
+/**
* enum nand_interface_type - NAND interface type
* @NAND_SDR_IFACE: Single Data Rate interface
+ * @NAND_NVDDR_IFACE: Double Data Rate interface
*/
enum nand_interface_type {
NAND_SDR_IFACE,
+ NAND_NVDDR_IFACE,
};
/**
@@ -485,6 +602,7 @@ enum nand_interface_type {
* @timings: The timing information
* @timings.mode: Timing mode as defined in the specification
* @timings.sdr: Use it when @type is %NAND_SDR_IFACE.
+ * @timings.nvddr: Use it when @type is %NAND_NVDDR_IFACE.
*/
struct nand_interface_config {
enum nand_interface_type type;
@@ -492,24 +610,56 @@ struct nand_interface_config {
unsigned int mode;
union {
struct nand_sdr_timings sdr;
+ struct nand_nvddr_timings nvddr;
};
} timings;
};
/**
+ * nand_interface_is_sdr - get the interface type
+ * @conf: The data interface
+ */
+static bool nand_interface_is_sdr(const struct nand_interface_config *conf)
+{
+ return conf->type == NAND_SDR_IFACE;
+}
+
+/**
+ * nand_interface_is_nvddr - get the interface type
+ * @conf: The data interface
+ */
+static bool nand_interface_is_nvddr(const struct nand_interface_config *conf)
+{
+ return conf->type == NAND_NVDDR_IFACE;
+}
+
+/**
* nand_get_sdr_timings - get SDR timing from data interface
* @conf: The data interface
*/
static inline const struct nand_sdr_timings *
nand_get_sdr_timings(const struct nand_interface_config *conf)
{
- if (conf->type != NAND_SDR_IFACE)
+ if (!nand_interface_is_sdr(conf))
return ERR_PTR(-EINVAL);
return &conf->timings.sdr;
}
/**
+ * nand_get_nvddr_timings - get NV-DDR timing from data interface
+ * @conf: The data interface
+ */
+static inline const struct nand_nvddr_timings *
+nand_get_nvddr_timings(const struct nand_interface_config *conf)
+{
+ if (!nand_interface_is_nvddr(conf))
+ return ERR_PTR(-EINVAL);
+
+ return &conf->timings.nvddr;
+}
+
+/**
* struct nand_op_cmd_instr - Definition of a command instruction
* @opcode: the command to issue in one cycle
*/
@@ -1413,7 +1563,6 @@ void nand_cleanup(struct nand_chip *chip);
* instruction and have no physical pin to check it.
*/
int nand_soft_waitrdy(struct nand_chip *chip, unsigned long timeout_ms);
-struct gpio_desc;
int nand_gpio_waitrdy(struct nand_chip *chip, struct gpio_desc *gpiod,
unsigned long timeout_ms);
@@ -1446,4 +1595,8 @@ static inline void *nand_get_data_buf(struct nand_chip *chip)
return chip->data_buf;
}
+/* Parse the gpio-cs property */
+int rawnand_dt_parse_gpio_cs(struct device *dev, struct gpio_desc ***cs_array,
+ unsigned int *ncs_array);
+
#endif /* __LINUX_MTD_RAWNAND_H */
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 98ed91b529ea..f67457748ed8 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -383,6 +383,7 @@ struct spi_nor_flash_parameter;
* @read_proto: the SPI protocol for read operations
* @write_proto: the SPI protocol for write operations
* @reg_proto: the SPI protocol for read_reg/write_reg/erase operations
+ * @sfdp: the SFDP data of the flash
* @controller_ops: SPI NOR controller driver specific operations.
* @params: [FLASH-SPECIFIC] SPI NOR flash parameters and settings.
* The structure includes legacy flash parameters and
@@ -412,6 +413,7 @@ struct spi_nor {
bool sst_write_second;
u32 flags;
enum spi_nor_cmd_ext cmd_ext_type;
+ struct sfdp *sfdp;
const struct spi_nor_controller_ops *controller_ops;
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index e162b757b6d5..471cb7b9e896 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -57,6 +57,7 @@ struct nvmem_keepout {
* @type: Type of the nvmem storage
* @read_only: Device is read-only.
* @root_only: Device is accessibly to root only.
+ * @of_node: If given, this will be used instead of the parent's of_node.
* @no_of_node: Device should not use the parent's of_node even if it's !NULL.
* @reg_read: Callback to read data.
* @reg_write: Callback to write data.
@@ -86,6 +87,7 @@ struct nvmem_config {
enum nvmem_type type;
bool read_only;
bool root_only;
+ struct device_node *of_node;
bool no_of_node;
nvmem_reg_read_t reg_read;
nvmem_reg_write_t reg_write;
diff --git a/include/linux/pl353-smc.h b/include/linux/pl353-smc.h
deleted file mode 100644
index 0e0d3df9bf72..000000000000
--- a/include/linux/pl353-smc.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * ARM PL353 SMC Driver Header
- *
- * Copyright (C) 2012 - 2018 Xilinx, Inc
- */
-
-#ifndef __LINUX_PL353_SMC_H
-#define __LINUX_PL353_SMC_H
-
-enum pl353_smc_ecc_mode {
- PL353_SMC_ECCMODE_BYPASS = 0,
- PL353_SMC_ECCMODE_APB = 1,
- PL353_SMC_ECCMODE_MEM = 2
-};
-
-enum pl353_smc_mem_width {
- PL353_SMC_MEM_WIDTH_8 = 0,
- PL353_SMC_MEM_WIDTH_16 = 1
-};
-
-u32 pl353_smc_get_ecc_val(int ecc_reg);
-bool pl353_smc_ecc_is_busy(void);
-int pl353_smc_get_nand_int_status_raw(void);
-void pl353_smc_clr_nand_int(void);
-int pl353_smc_set_ecc_mode(enum pl353_smc_ecc_mode mode);
-int pl353_smc_set_ecc_pg_size(unsigned int pg_sz);
-int pl353_smc_set_buswidth(unsigned int bw);
-void pl353_smc_set_cycles(u32 timings[]);
-#endif