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2015-02-17Merge tag 'cleanup-for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Olof Johansson: "This is a good healthy set of various code removals. Total net delta is 8100 lines removed. Among the larger cleanups are: - Removal of old Samsung S3C DMA infrastructure by Arnd - Removal of the non-DT version of the 'lager' board by Magnus Damm - General stale code removal on OMAP and Davinci by Rickard Strandqvist - Removal of non-DT support on am3517 platforms by Tony Lindgren ... plus several other cleanups of various platforms across the board" * tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (47 commits) ARM: sirf: drop redundant function and marco declaration arm: omap: specify PMUs are for ARMv7 CPUs arm: shmobile: specify PMUs are for ARMv7 CPUs arm: iop: specify PMUs are for XScale CPUs arm: pxa: specify PMUs are for XScale CPUs arm: realview: specify PMU types ARM: SAMSUNG: remove unused DMA infrastructure ARM: OMAP3: Add back Kconfig option MACH_OMAP3517EVM for ASoC ARM: davinci: Remove CDCE949 driver ARM: at91: remove useless at91rm9200_set_type() ARM: at91: remove useless at91rm9200_dt_initialize() ARM: at91: move debug-macro.S into the common space ARM: at91: remove useless at91_sysirq_mask_rtx ARM: at91: remove useless config MACH_AT91SAM9_DT ARM: at91: remove useless config MACH_AT91RM9200_DT ARM: at91: remove unused mach/memory.h ARM: at91: remove useless header file includes ARM: at91: remove unneeded header file rtc: at91/Kconfig: remove useless options ARM: at91/Documentation: add a README for Atmel SoCs ...
2015-02-05resources: Move struct resource_list_entry from ACPI into resource coreJiang Liu1-5/+5
Currently ACPI, PCI and pnp all implement the same resource list management with different data structure. We need to transfer from one data structure into another when passing resources from one subsystem into another subsystem. So move struct resource_list_entry from ACPI into resource core and rename it as resource_entry, then it could be reused by different subystems and avoid the data structure conversion. Introduce dedicated header file resource_ext.h instead of embedding it into ioport.h to avoid header file inclusion order issues. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-01-24ARM: SAMSUNG: remove unused DMA infrastructureArnd Bergmann1-1/+1
Everything uses dmaengine now, so there is no reason to keep this around any longer. Thanks to everyone who was involved in moving the users over to use the dmaengine APIs. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-01-13dmaengine: dw: balance PM runtime callsAndy Shevchenko2-2/+5
In case of PCI driver we will get a warning: dw_dmac_pci 0000:00:18.0: Unbalanced pm_runtime_enable! dw_dmac_pci 0000:00:18.0: DesignWare DMA Controller, 8 channels This happens due to pm_runtime_enable() call from the driver when PM runtime is enabled by core. This patch moves that call to the platform driver where it might make sense. Fixes: bb32baf76e56 (dmaengine: dw: enable runtime PM) Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds14-14/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-12Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-armLinus Torvalds1-4/+95
Pull ARM updates from Russell King: "The major updates included in this update are: - Clang compatible stack pointer accesses by Behan Webster. - SA11x0 updates from Dmitry Eremin-Solenikov. - kgdb handling of breakpoints with read-only text/modules - Support for Privileged-no-execute feature on ARMv7 to prevent userspace code execution by the kernel. - AMBA primecell bus handling of irq-safe runtime PM - Unwinding support for memset/memzero/memmove/memcpy functions - VFP fixes for Krait CPUs and improvements in detecting the VFP architecture - A number of code cleanups (using pr_*, removing or reducing the severity of a couple of kernel messages, splitting ftrace asm code out to a separate file, etc.) - Add machine name to stack dump output" * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (62 commits) ARM: 8247/2: pcmcia: sa1100: make use of device clock ARM: 8246/2: pcmcia: sa1111: provide device clock ARM: 8245/1: pcmcia: soc-common: enable/disable socket clocks ARM: 8244/1: fbdev: sa1100fb: make use of device clock ARM: 8243/1: sa1100: add a clock alias for sa1111 pcmcia device ARM: 8242/1: sa1100: add cpu clock ARM: 8221/1: PJ4: allow building in Thumb-2 mode ARM: 8234/1: sa1100: reorder IRQ handling code ARM: 8233/1: sa1100: switch to hwirq usage ARM: 8232/1: sa1100: merge GPIO multiplexer IRQ to "normal" irq domain ARM: 8231/1: sa1100: introduce irqdomains support ARM: 8230/1: sa1100: shift IRQs by one ARM: 8229/1: sa1100: replace irq numbers with names in irq driver ARM: 8228/1: sa1100: drop entry-macro.S ARM: 8227/1: sa1100: switch to MULTI_IRQ_HANDLER ARM: 8241/1: Update processor_modes for hyp and monitor mode ARM: 8240/1: MCPM: document mcpm_sync_init() ARM: 8239/1: Introduce {set,clear}_pte_bit ARM: 8238/1: mm: Refine set_memory_* functions ARM: 8237/1: fix flush_pfn_alias ...
2014-12-12Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds36-266/+1953
Pull dmaengine updates from Vinod Koul: "Main features this time are: - BAM v1.3.0 support form qcom bam dma - support for Allwinner sun8i dma - atmels eXtended DMA Controller driver - chancnt cleanup by Maxime - fixes spread over drivers" * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (56 commits) dmaenegine: Delete a check before free_percpu() dmaengine: ioatdma: fix dma mapping errors dma: cppi41: add a delay while setting the TD bit dma: cppi41: wait longer for the HW to return the descriptor dmaengine: fsl-edma: fixup reg offset and hw S/G support in big-endian model dmaengine: fsl-edma: fix calculation of remaining bytes drivers/dma/pch_dma: declare pch_dma_id_table as static dmaengine: ste_dma40: fix error return code dma: imx-sdma: clarify about firmware not found error Documentation: devicetree: Fix Xilinx VDMA specification dmaengine: pl330: update author info dmaengine: clarify the issue_pending expectations dmaengine: at_xdmac: Add DMA_PRIVATE ARM: dts: at_xdmac: fix bad value of dma-cells in documentation dmaengine: at_xdmac: fix missing spin_unlock dmaengine: at_xdmac: fix a bug in transfer residue computation dmaengine: at_xdmac: fix software lockup at_xdmac_tx_status() dmaengine: at_xdmac: remove chancnt affectation dmaengine: at_xdmac: prefer usage of readl/writel_relaxed dmaengine: xdmac: fix print warning on dma_addr_t variable ...
2014-12-11Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2-3/+3
Pull MIPS updates from Ralf Baechle: "This is an unusually large pull request for MIPS - in parts because lots of patches missed the 3.18 deadline but primarily because some folks opened the flood gates. - Retire the MIPS-specific phys_t with the generic phys_addr_t. - Improvments for the backtrace code used by oprofile. - Better backtraces on SMP systems. - Cleanups for the Octeon platform code. - Cleanups and fixes for the Loongson platform code. - Cleanups and fixes to the firmware library. - Switch ATH79 platform to use the firmware library. - Grand overhault to the SEAD3 and Malta interrupt code. - Move the GIC interrupt code to drivers/irqchip - Lots of GIC cleanups and updates to the GIC code to use modern IRQ infrastructures and features of the kernel. - OF documentation updates for the GIC bindings - Move GIC clocksource driver to drivers/clocksource - Merge GIC clocksource driver with clockevent driver. - Further updates to bring the GIC clocksource driver up to date. - R3000 TLB code cleanups - Improvments to the Loongson 3 platform code. - Convert pr_warning to pr_warn. - Merge a bunch of small lantiq and ralink fixes that have been staged/lingering inside the openwrt tree for a while. - Update archhelp for IP22/IP32 - Fix a number of issues for Loongson 1B. - New clocksource and clockevent driver for Loongson 1B. - Further work on clk handling for Loongson 1B. - Platform work for Broadcom BMIPS. - Error handling cleanups for TurboChannel. - Fixes and optimization to the microMIPS support. - Option to disable the FTLB. - Dump more relevant information on machine check exception - Change binfmt to allow arch to examine PT_*PROC headers - Support for new style FPU register model in O32 - VDSO randomization. - BCM47xx cleanups - BCM47xx reimplement the way the kernel accesses NVRAM information. - Random cleanups - Add support for ATH25 platforms - Remove pointless locking code in some PCI platforms. - Some improvments to EVA support - Minor Alchemy cleanup" * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (185 commits) MIPS: Add MFHC0 and MTHC0 instructions to uasm. MIPS: Cosmetic cleanups of page table headers. MIPS: Add CP0 macros for extended EntryLo registers MIPS: Remove now unused definition of phys_t. MIPS: Replace use of phys_t with phys_addr_t. MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BIT PCMCIA: Alchemy Don't select 64BIT_PHYS_ADDR in Kconfig. MIPS: lib: memset: Clean up some MIPS{EL,EB} ifdefery MIPS: iomap: Use __mem_{read,write}{b,w,l} for MMIO MIPS: <asm/types.h> fix indentation. MAINTAINERS: Add entry for BMIPS multiplatform kernel MIPS: Enable VDSO randomization MIPS: Remove a temporary hack for debugging cache flushes in SMTC configuration MIPS: Remove declaration of obsolete arch_init_clk_ops() MIPS: atomic.h: Reformat to fit in 79 columns MIPS: Apply `.insn' to fixup labels throughout MIPS: Fix microMIPS LL/SC immediate offsets MIPS: Kconfig: Only allow 32-bit microMIPS builds MIPS: signal.c: Fix an invalid cast in ISA mode bit handling MIPS: mm: Only build one microassembler that is suitable ...
2014-12-09dmaenegine: Delete a check before free_percpu()Markus Elfring1-2/+1
The free_percpu() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-09dmaengine: ioatdma: fix dma mapping errorsPrarit Bhargava1-6/+29
Several systems are showing the following stack trace: WARNING: CPU: 0 PID: 2352 at lib/dma-debug.c:1140 check_unmap+0x4ee/0x9e0() ioatdma 0000:00:04.0: DMA-API: device driver failed to check map error[device address=0x0000000465bad000] [size=4096 bytes] [mapped as page] Modules linked in: ioatdma(E+) nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel cdc_ether ses ghash_clmulni_intel usbnet mii enclosure aesni_intel lrw gf128mul glue_helper iTCO_wdt shpchp ablk_helper iTCO_vendor_support cryptd pcspkr ipmi_devintf sb_edac lpc_ich edac_core mfd_core ipmi_si i2c_i801 wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt drm_kms_helper ttm igb drm ptp pps_core dca i2c_algo_bit i2ccore megaraid_sas dm_mirror dm_region_hash dm_log dm_mod [last unloaded: ioatdma] CPU: 0 PID: 2352 Comm: insmod Tainted: G E 3.17.0-rc4+ #14 Hardware name: HP ProLiant m300 Server Cartridge/, BIOS H02 01/30/2014 0000000000000009 ffff88007994b7d8 ffffffff816e7225 ffff88007994b820 ffff88007994b810 ffffffff8107e51d ffff88045fc56c00 ffff88046643ee90 ffffffff8338ccd0 0000000000000286 ffffffff81956629 ffff88007994b870 Call Trace: [<ffffffff816e7225>] dump_stack+0x4d/0x66 [<ffffffff8107e51d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff8107e58c>] warn_slowpath_fmt+0x4c/0x50 [<ffffffff81381e6e>] check_unmap+0x4ee/0x9e0 [<ffffffff813823bf>] debug_dma_unmap_page+0x5f/0x70 [<ffffffffa04546d8>] ioat_xor_val_self_test+0x498/0xcf0 [ioatdma] [<ffffffff81204f0a>] ? kfree+0xda/0x2b0 [<ffffffffa044d510>] ? ioat_dma_setup_interrupts+0x120/0x2d0 [ioatdma] [<ffffffffa0454f4e>] ioat3_dma_self_test+0x1e/0x30 [ioatdma] [<ffffffffa044f904>] ioat_probe+0xf4/0x110 [ioatdma] [<ffffffffa04550f8>] ioat3_dma_probe+0x198/0x3a0 [ioatdma] [<ffffffffa044d18e>] ioat_pci_probe+0x11e/0x1b0 [ioatdma] [<ffffffff81393a15>] local_pci_probe+0x45/0xa0 [<ffffffff81394be5>] ? pci_match_device+0xe5/0x110 [<ffffffff81394d29>] pci_device_probe+0xd9/0x130 [<ffffffff81462860>] driver_probe_device+0x90/0x3c0 [<ffffffff81462c63>] __driver_attach+0x93/0xa0 [<ffffffff81462bd0>] ? __device_attach+0x40/0x40 [<ffffffff8146080b>] bus_for_each_dev+0x6b/0xb0 [<ffffffff814622ce>] driver_attach+0x1e/0x20 [<ffffffff81461ed8>] bus_add_driver+0x188/0x260 [<ffffffffa0423000>] ? 0xffffffffa0423000 [<ffffffff81463734>] driver_register+0x64/0xf0 [<ffffffff813933a0>] __pci_register_driver+0x60/0x70 [<ffffffffa0423089>] ioat_init_module+0x89/0x1000 [ioatdma] [<ffffffff8100212c>] do_one_initcall+0xbc/0x200 [<ffffffff811e8b22>] ? __vunmap+0xd2/0x120 [<ffffffff8111e73c>] load_module+0x14ec/0x1b50 [<ffffffff81119970>] ? store_uevent+0x40/0x40 [<ffffffff8111ef36>] SyS_finit_module+0x86/0xb0 [<ffffffff816f1469>] system_call_fastpath+0x16/0x1b ---[ end trace 1052ccbbc3db4d08 ]--- Mapped at: [<ffffffff81380be1>] debug_dma_map_page+0x91/0x140 [<ffffffffa045440e>] ioat_xor_val_self_test+0x1ce/0xcf0 [ioatdma] [<ffffffffa0454f4e>] ioat3_dma_self_test+0x1e/0x30 [ioatdma] [<ffffffffa044f904>] ioat_probe+0xf4/0x110 [ioatdma] [<ffffffffa04550f8>] ioat3_dma_probe+0x198/0x3a0 [ioatdma] This happens because the current ioatdma DMA test code does not check the return value of dma_map_page() calls with dma_mapping_error(). In addition, it was noticed that mapping for the variable dest_dma is free'd before the last use. This patch fixes these errors by initializing the dma_srcs[] array and checking the returns with dma_mapping_error(). Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-09dma: cppi41: add a delay while setting the TD bitSebastian Andrzej Siewior1-2/+7
The manual says that we need to (repeatedly) set the TearDown-bit for the endpoint in order to get the active transfer descriptor released. Doing this "real" quick over and over again seems to work but it also seems that the hardware might not have enough time to breathe. So I though, hey lets add a udelay() between between the individual sets of the bit. This change with the g_zero testcase resulted in a warning about missing transfer descriptor (we got the tear-down one). It seems that if the hardware has some time it manages to release the transfer-descriptor on the completion queue after the teaddown descriptor. With this change, I observe that the transfer descriptor is released after 20-30 retry loops. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-09dma: cppi41: wait longer for the HW to return the descriptorSebastian Andrzej Siewior1-1/+1
For a "complete" teardown we have to wait until the teardown descriptor is returned by the hardware. The g_zero testcase "testusb -a -t 9" triggers the following warning quite reliable: |------------[ cut here ]------------ |WARNING: CPU: 0 PID: 0 at drivers/dma/cppi41.c:609 cppi41_dma_control+0x198/0x304() |[<c003f84c>] (warn_slowpath_null) from [<c02be8d8>] |[<c02be8d8>] (cppi41_dma_control) from [<bf08d25c>] |[<bf08d25c>] (cppi41_dma_channel_abort [musb_hdrc]) |[<bf08bc38>] (nuke.constprop.10 [musb_hdrc]) |[<bf08bd08>] (musb_gadget_disable [musb_hdrc]) |[<bf252524>] (disable_endpoints [usb_f_ss_lb]) |[<bf2525d8>] (disable_source_sink [usb_f_ss_lb]) |[<bf25260c>] (sourcesink_set_alt [usb_f_ss_lb]) |[<bf23ad24>] (composite_setup [libcomposite]) |[<bf08a2f4>] (musb_g_ep0_irq [musb_hdrc]) |[<bf085ec4>] (musb_interrupt [musb_hdrc]) |[<bf0aeaf4>] (dsps_interrupt [musb_dsps]) |[<c0080ea8>] (handle_irq_event_percpu) |[<c008112c>] (handle_irq_event) |[<c008348c>] (handle_level_irq) |[<c00807a8>] (generic_handle_irq) |[<c000ee80>] (handle_IRQ) |[<c00085f0>] (omap3_intc_handle_irq) and complains about a TD descriptor which is not returned. I've been looking at several things and haven't noticed anything unusual that might lead to this. The manual says "to try again" until the descriptor comes out. I limited the amount of retries to 100 retries in order to avoid an infinite number of retries and so a busy-loop. Back then testing revealed that the number of retries were around 20-30 so 100 seemed a good upper limit. This g_zero test reaches without a problem 98 retries and it jumps sometimes to 101 on am335x-evm and so the WARN_ON() triggers. Same test run on beaglebone black and the retries start at 122 and my max value so far was at 128. So lets rise the limit to 500. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-09dmaengine: fsl-edma: fixup reg offset and hw S/G support in big-endian modelJingchang Lu1-93/+96
The offset of all 8-/16-bit registers in big-endian eDMA model are swapped in a 32-bit size opposite those in the little-endian model. The hardware Scatter/Gather requires the subsequent TCDs stored in memory in little endian independent of the register endian model, the eDMA engine will do the swap if need. This patch also use regular assignment for tcd variables r/w instead of with io function previously that may not always be true. Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-08dmaengine: fsl-edma: fix calculation of remaining bytesStefan Agner1-1/+1
If the current transfer control descriptor (TCD) was not yet started, the address will be the same as the initial address. Hence test if the current address is less than or equal to the start address of each TCD. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki2-2/+2
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM in drivers/dma/nbpfaxi.c and drivers/dma/tegra20-apb-dma.c. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05drivers/dma/pch_dma: declare pch_dma_id_table as staticMichele Curti1-1/+1
pch_dma_id_table is used in pch_dma.c only, so declare it as static Signed-off-by: Michele Curti <michele.curti@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05dmaengine: ste_dma40: fix error return codeJulia Lawall1-0/+1
Return a negative error code on failure. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05dma: imx-sdma: clarify about firmware not found errorSascha Hauer1-1/+2
When a firmware cannot be found for the SDMA engine then we can continue with the internal ROM firmware. The meaning of this message is frequently asked for, so make clear that the driver still works with the internal ROM firmware and reduce the loglevel from err to info. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05dmaengine: pl330: update author infoJassi Brar1-1/+1
Update email-id to a personal one, as I have changed employment. Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-12-05Merge branch 'topic/at_xdmac' into for-linusVinod Koul2-31/+45
2014-12-04PM: Merge the SET*_RUNTIME_PM_OPS() macrosRafael J. Wysocki1-1/+1
The SET_PM_RUNTIME_PM_OPS() and SET_RUNTIME_PM_OPS() macros are identical except that one of them is not empty for CONFIG_PM set, while the other one is not empty for CONFIG_PM_RUNTIME set, respectively. However, after commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so one of these macros is now redundant. For this reason, replace SET_PM_RUNTIME_PM_OPS() with SET_RUNTIME_PM_OPS() everywhere and redefine the SET_PM_RUNTIME_PM_OPS symbol as SET_RUNTIME_PM_OPS in case new code is starting to use the macro being removed here. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-04Merge branch 'acpi-lpss' into pm-runtimeRafael J. Wysocki1-0/+11
2014-11-27ARM: 8206/1: dmaengine: pl330: Add PM sleep supportKrzysztof Kozlowski1-0/+41
Add system suspend/resume capabilities to the pl330 driver so the amba bus clock could be also unprepared to conserve energy. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-11-24MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BITRalf Baechle2-3/+3
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-21Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2-38/+46
Pull dmaengine fixes from Vinod Koul: "We have couple of fixes for dmaengine queued up: - dma mempcy fix for dma configuration of sun6i by Maxime - pl330 fixes: First the fixing allocation for data buffers by Liviu and then Jon's fixe for fifo width and usage" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: Fix allocation size for PL330 data buffer depth. dmaengine: pl330: Limit MFIFO usage for memcpy to avoid exhausting entries dmaengine: pl330: Align DMA memcpy operations to MFIFO width dmaengine: sun6i: Fix memcpy operation
2014-11-17ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12Krzysztof Kozlowski1-4/+54
This patch adds runtime PM support to pl330 DMA engine driver. The runtime power management for pl330 DMA driver allows gating of AMBA clock (PDMA) in FSYS clock domain, when the device is not processing any requests. This is necessary to enter low power modes on Exynos SoCs (e.g. LPA on Exynos4x12 or W-AFTR on Exynos3250). Runtime PM resuming of the device may happen in atomic context (during call device_issue_pending()) so pm_runtime_irq_safe() is used. This will lead only to disabling/enabling of the clock but this is sufficient for gating the clock and for reducing energy usage. Driver uses runtime PM callbacks from amba/bus.c driver only. Suggested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-11-17dmaengine: at_xdmac: Add DMA_PRIVATELudovic Desroches1-0/+5
same issue as commit 7f5ae3553685: "Without DMA_PRIVATE the driver is not able to allocate more than one channel. Since it uses dma_get_any_slave_channel that calls private_candidate, the second allocation fails at /* some channels are already publicly allocated */ " Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: fix missing spin_unlockLudovic Desroches1-0/+1
Lock taken when entering the function but unlock missing before it returns. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: fix a bug in transfer residue computationCyrille Pitchen1-1/+3
The total size of the transfer was wrong in at_xdmac_prep_slave_sg() resulting in bad computation of the transfer residue by at_xdmac_tx_status(). Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: fix software lockup at_xdmac_tx_status()Cyrille Pitchen1-5/+12
According to the Atmel eXtended DMA controller datasheet, requesting a DMA transfer flush for a channel is only revelant when this transfer is source peripheral synchronized. So we have to check this condition before requesting a channel flush by writing the channel bit into the Global channel SoftWare Flush (GSWF) register then waiting for flush to complete by monitoring the end of Flush Interrupt Status (FIS) bit in the Channel Interrupt Status (CIS) register. Indeed, for non source peripheral synchronized transfer, writing the channel bit into the GSWF register does nothing. Especially, the FIS bit is never set into the CIS register. The former code looped forever waiting for this bit to be set. Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: remove chancnt affectationLudovic Desroches1-1/+0
Remove chancnt affectation since it is done in dma_async_device_regiser. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: prefer usage of readl/writel_relaxedLudovic Desroches2-5/+5
_relaxed version of readl and writel are not implemented on all architecture so COMPILE_TEST has to be removed in order to not cause some build failures. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: xdmac: fix print warning on dma_addr_t variableVinod Koul1-20/+20
As documented in printk-formats.txt the dma_addr_t should be printed with %pad specfiers. This way it works on all archs. make.cross ARCH=s390 All warnings: drivers/dma/at_xdmac.c: In function 'at_xdmac_prep_slave_sg': >> drivers/dma/at_xdmac.c:621:3: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ >> drivers/dma/at_xdmac.c:621:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] >> drivers/dma/at_xdmac.c:628:4: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ drivers/dma/at_xdmac.c: In function 'at_xdmac_prep_dma_cyclic': >> drivers/dma/at_xdmac.c:663:2: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), "%s: buf_addr=0x%08x, buf_len=%d, period_len=%d, dir=%s, flags=0x%lx\n", ^ >> drivers/dma/at_xdmac.c:690:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ >> drivers/dma/at_xdmac.c:709:3: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ >> drivers/dma/at_xdmac.c:709:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] >> drivers/dma/at_xdmac.c:716:4: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), >> drivers/dma/at_xdmac.c:731:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ drivers/dma/at_xdmac.c: In function 'at_xdmac_prep_dma_memcpy': >> drivers/dma/at_xdmac.c:765:2: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), "%s: src=0x%08x, dest=0x%08x, len=%d, flags=0x%lx\n", ^ >> drivers/dma/at_xdmac.c:765:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), "%s: remaining_size=%u\n", __func__, remaining_size); ^ >> drivers/dma/at_xdmac.c:845:3: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ >> drivers/dma/at_xdmac.c:845:3: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] >> drivers/dma/at_xdmac.c:852:4: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), ^ drivers/dma/at_xdmac.c: In function 'at_xdmac_tx_status': >> drivers/dma/at_xdmac.c:929:2: warning: format '%x' expects argument of type 'unsigned int', but argument 6 has type 'dma_addr_t' [-Wformat=] dev_dbg(chan2dev(chan), Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: xdmac: fix print warning on size_t variableVinod Koul1-4/+4
As documented in printk-formats.txt the size_t should be printed with %zu/%zd specfiers. This way it works on all archs. make.cross ARCH=avr32 All warnings: drivers/dma/at_xdmac.c: In function 'at_xdmac_prep_dma_cyclic': >> drivers/dma/at_xdmac.c:663: warning: format '%d' expects type 'int', but argument 6 has type 'size_t' >> drivers/dma/at_xdmac.c:663: warning: format '%d' expects type 'int', but argument 7 has type 'size_t' drivers/dma/at_xdmac.c: In function 'at_xdmac_prep_dma_memcpy': >> drivers/dma/at_xdmac.c:765: warning: format '%d' expects type 'int', but argument 7 has type 'size_t' >> drivers/dma/at_xdmac.c:794: warning: format '%u' expects type 'unsigned int', but argument 5 has type 'size_t' >> drivers/dma/at_xdmac.c:815: warning: format '%u' expects type 'unsigned int', but argument 5 has type 'size_t' Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: fix usage of read, write wrappersVinod Koul1-4/+4
This driver uses read_relaxed and writel_relaxed to read, write to IO memory. the config defines COMPILE_TEST so gets compiled on different archs. This causes issue as few archs like x86 etc don't define it. So use readl/writel which is defined in all archs Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: at_xdmac: fix semicolon.cocci warningskbuild test robot1-1/+1
drivers/dma/at_xdmac.c:702:3-4: Unneeded semicolon Removes unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: k3dma: Add CONFIG_PM_SLEEP to suspend/resume functionsJingoo Han1-0/+2
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SIMPLE_DEV_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/dma/k3dma.c:790:12: warning: 'k3_dma_suspend' defined but not used [-Wunused-function] drivers/dma/k3dma.c:806:12: warning: 'k3_dma_resume' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: sirf: Add CONFIG_PM_SLEEP to suspend/resume functionsJingoo Han1-0/+2
Add CONFIG_PM_SLEEP to suspend/resume functions to fix the following build warning when CONFIG_PM_SLEEP is not selected. This is because sleep PM callbacks defined by SET_SYSTEM_SLEEP_PM_OPS are only used when the CONFIG_PM_SLEEP is enabled. drivers/dma/sirf-dma.c:838:12: warning: 'sirfsoc_dma_pm_suspend' defined but not used [-Wunused-function] drivers/dma/sirf-dma.c:879:12: warning: 'sirfsoc_dma_pm_resume' defined but not used [-Wunused-function] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: imx-sdma: Add a new DMATYPE for SAINicolin Chen1-0/+1
This patch simply adds a new DMATYPE for SAI which's included in i.MX6 Solo X. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: shdma: fix a race condition in __ld_cleanup()Yoshihiro Shimoda1-0/+2
This patch fixes a race condition about a list of shdma-base driver. If we don't apply this patch, a dma slave driver (especially a usb peripheral driver) may not be able to start the transfer. If a dma slave driver has a callback, __ld_cleanup() will call the callback before this driver removes the list. After the callback, since the return value of __ld_cleanup() is not zero, shdma_chan_ld_cleanup() calls __ld_cleanup() again. And, __ld_clean() will removes the list. At this time, if a dma slave driver calls dmaengine_submit() before this driver removes the list, this driver will set schan->pm_state to SHDMA_PM_PENDING in shdma_tx_submit(). And then, even if a dma slave driver calls dma_async_issue_pending(), this driver don't start the transfer because the schan->pm_state is SHDMA_PM_PENDING in shdma_issue_pending(). So, this patch adds a new condition in __ld_clean() to check if the schan->pm_state is SHDMA_PM_PENDING or not. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: qcom_bam_dma: Add BAM v1.3.0 supportArchit Taneja1-8/+50
We currently have register offset information only for BAM IPs with revision 1.4.0. We add register offset table entries for the legacy (v1.3.0) version of BAM IPs found on SoCs like APQ8064 and MSM8960. The register offset table pointers are stored in DT data corresponding to the BAM IP version specified in the compatible string. Reviewed-by: Kumar Gala <galak@codeaurora.org> Reviewed-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: qcom_bam_dma: Generalize BAM register offset calculationsArchit Taneja1-63/+113
The BAM DMA IP comes in different versions. The register offset layout varies among these versions. The layouts depend on which generation/family of SoCs they belong to. The current SoCs(like 8084, 8074) have a layout where the Top level registers come in the beginning of the address range, followed by pipe and event registers. The BAM revision numbers fall above 1.4.0. The older SoCs (like 8064, 8960) have a layout where the pipe registers come first, and the top level come later. These have BAM revision numbers lesser than 1.4.0. It isn't suitable to have macros provide the register offsets with the layouts changed. Future BAM revisions may have different register layouts too. The register addresses are now calculated by referring a table which contains a base offset and multipliers for pipe/evnt/ee registers. We have a common function bam_addr() which computes addresses for all the registers. When computing address of top level/ee registers, we pass 0 to the pipe argument in addr() since they don't have any multiple instances. Some of the unused register definitions are removed. We can add new registers as we need them. Reviewed-by: Kumar Gala <galak@codeaurora.org> Reviewed-by: Andy Gross <agross@codeaurora.org> Signed-off-by: Archit Taneja <architt@codeaurora.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: sun6i: Add support for Allwinner A23 (sun8i) variantChen-Yu Tsai2-2/+29
The A23 SoC has the same dma engine as the A31 (sun6i), with a reduced amount of endpoints and physical channels. Add the proper config data and compatible string to support it. A slight difference in sun8i is an undocumented register needs to be toggled for dma to function. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: sun6i: support parameterized compatible stringsChen-Yu Tsai1-34/+60
This patch adds support for hardware parameters tied to compatible strings, so similar hardware can reuse the driver. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dma: imx-sdma: remove incorrect __init annotation from sdma_init()Jingoo Han1-1/+1
When platform_driver_probe() is not used, sdma_probe() can be called by bind/unbind via sysfs. In addition, sdma_init() can be called by sdma_probe(). Thus, __init annotation should be removed from sdma_init(), Also, this patch fixes section mismatch warning. WARNING: drivers/dma/built-in.o(.text+0xd6e4): Section mismatch in reference from the function sdma_probe() to the function .init.text:sdma_init() The function sdma_probe() references the function __init sdma_init(). This is often because sdma_probe lacks a __init annotation or the annotation of sdma_init is wrong. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: pl330: Correct device assignment.Andrew Jackson1-2/+3
Commit f6f2421c0a1c removed pl330_info structure by embedding it into pl330_dmac structure, but did not ensure that the dmac->ddma.dev pointer gets initialised before use. When dma_alloc_coherent() gets called on arm64 a WARN() gets triggered due to dev being NULL. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1 at arch/arm64/mm/dma-mapping.c:49 __dma_alloc_coherent+0xd0/0xe0() Use an actual device structure for DMA allocation Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.17.0+ #5 Call trace: [<ffffffc000087f24>] dump_backtrace+0x0/0x130 [<ffffffc000088064>] show_stack+0x10/0x1c [<ffffffc0004e8af8>] dump_stack+0x74/0xb8 [<ffffffc0000aa444>] warn_slowpath_common+0x8c/0xb4 [<ffffffc0000aa4b8>] warn_slowpath_fmt+0x4c/0x58 [<ffffffc000092580>] __dma_alloc_coherent+0xcc/0xe0 [<ffffffc000092734>] __dma_alloc_noncoherent+0x64/0x158 [<ffffffc000312cd8>] pl330_probe+0x650/0x8f0 [<ffffffc00030e1d4>] amba_probe+0xa0/0xc8 [<ffffffc000350240>] really_probe+0xc4/0x22c [<ffffffc0003504b4>] __driver_attach+0xa0/0xa8 [<ffffffc00034e5fc>] bus_for_each_dev+0x54/0x98 [<ffffffc00034fd8c>] driver_attach+0x1c/0x28 [<ffffffc00034fa08>] bus_add_driver+0x14c/0x204 [<ffffffc000350b84>] driver_register+0x64/0x130 [<ffffffc00030dcf8>] amba_driver_register+0x50/0x5c [<ffffffc0006a60d0>] pl330_driver_init+0x10/0x1c [<ffffffc0000814ac>] do_one_initcall+0x88/0x19c [<ffffffc00068dab8>] kernel_init_freeable+0x140/0x1e0 [<ffffffc0004e5e18>] kernel_init+0x10/0xd4 ---[ end trace 76f2d47a444e523e ]--- (NULL device *): dmac_alloc_resources:1821 Can't allocate memory! (NULL device *): Unable to create channels for DMAC This patch will also ensure that any dev_err messages are printed with the appropriate device name. Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: Fix allocation size for PL330 data buffer depth.Liviu Dudau1-2/+2
The datasheet for PL330 says that the data buffer value in the CRD register is 10bits wide. However, the value stored is "minus one", which the driver corrects for. Maximum value that the data buffer depth can have is 1024 lines, which requires 11 bits for storage. While making updates I found printing the peripheral ID as a hex value to be more useful as the datasheet shows the values that way. Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: pl330: Limit MFIFO usage for memcpy to avoid exhausting entriesJon Medhurst1-1/+1
The MFIFO is shared by all channels so restrict each memcpy to it's fair share. This is being over cautious, but without a global view of DMA channel usage on a system it's not possible to come up with a more optimum safe limit. Signed-off-by: Jon Medhurst <tixy@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-17dmaengine: pl330: Align DMA memcpy operations to MFIFO widthJon Medhurst1-4/+13
The algorithm used for programming the DMA Controller doesn't take into consideration the requirements of transfers that are not aligned to the bus width. This failure may result in DMA transferring one too few MFIFO entries (so too few bytes are copied) or the DMA trying to write one too many MFIFO entries and hanging because this is never provided. See "MFIFO Usage Overview" chapter in the the TRM for "CoreLink DMA Controller DMA-330", Revision r1p1. We work around these shortcomings by making sure we pick a burst size and length which ensures no bursts straddle an MFIFO entry. Signed-off-by: Jon Medhurst <tixy@linaro.org> [squashed linker error "undefined reference to `__aeabi_uldivmod] Reported-by: kbuild test robot <fengguang.wu@intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-12dmaengine: sun6i: Fix memcpy operationMaxime Ripard1-31/+30
The prep_memcpy call was not setting any meaningful burst and width because it was relying on the dma_slave_config was not set already. Rework the needed conversion functions, and hardcode the width and burst to use. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: stable@vger.kernel.org Signed-off-by: Vinod Koul <vinod.koul@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 22:04:30 +0000