Merge tag 'mmc-v4.7' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add TRACE support to be able to debug request flow
   - Extend/improve reset support for (e)MMC
   - Convert MMC pwrseq to platform device drivers
   - Use IDA for indexes
   - Some additional minor improvements

  MMC host:
   - sdhci: Re-factoring, clean-ups and improvements
   - sdhci-acpi|pci: Use MMC_CAP_AGGRESSIVE_PM for Broxton
   - omap/omap_hsmmc: Convert to use dma_request_chan()
   - usdhi6rol0: Add support for UHS modes
   - sh_mmcif: Update runtime PM support
   - tmio: Wolfram Sang steps in as maintainer
   - tmio: Add UHS-I mode support
   - sh_mobile_sdhi: Add UHS-I mode support
   - tmio/sdhi: Re-factoring, clean-ups and improvements
   - dw_mmc: Re-factoring and clean-ups
   - davinci: Convert to use dma_request_chan()"

* tag 'mmc-v4.7' of git://git.linaro.org/people/ulf.hansson/mmc: (99 commits)
  mmc: mmc: Fix partition switch timeout for some eMMCs
  mmc: sh_mobile_sdhi: enable SDIO IRQs for RCar Gen3
  mmc: sdio: fall back to SDIO 1.0 for broken 1.1 cards
  mmc: sdhci-st: correct name of sd-uhs-sdr50 property
  MAINTAINERS: update entry for TMIO MMC driver
  mmc: block: improve logging of handling emmc timeouts
  mmc: sdhci: removed unneeded function wrappers
  mmc: core: remove the invalid message in mmc_select_timing
  mmc: core: fix using wrong io voltage if mmc_select_hs200 fails
  mmc: sdhci-of-arasan: fix set_clock when a phy is supported
  mmc: omap: Use dma_request_chan() for requesting DMA channel
  mmc: mmc: Attempt to flush cache before reset
  mmc: sh_mobile_sdhi: check return value when changing clk
  mmc: sh_mobile_sdhi: only change the clock on RCar Gen2+
  mmc: tmio/sdhi: introduce flag for RCar 2+ specific features
  mmc: sh_mobile_sdhi: make clk_update function more compact
  mmc: omap_hsmmc: Use dma_request_chan() for requesting DMA channel
  mmc: sdhci-of-at91: add presets setup
  mmc: usdhi6rol0: add pinctrl to set pin drive strength
  mmc: usdhi6rol0: add support for UHS modes
  ...

6 files changed, 215 insertions, 95 deletions

diff --git a/include/linux/mfd/tmio.h b/include/linux/mfd/tmio.h
index 05d58ee5e6a7..7a26286db895 100644
--- a/include/linux/mfd/tmio.h
+++ b/include/linux/mfd/tmio.h
@@ -66,8 +66,8 @@
  */
 #define TMIO_MMC_SDIO_IRQ		(1 << 2)
 
-/* Some controllers don't need to wait 10ms for clock changes */
-#define TMIO_MMC_FAST_CLK_CHG		(1 << 3)
+/* Some features are only available or tested on RCar Gen2 or later */
+#define TMIO_MMC_MIN_RCAR2		(1 << 3)
 
 /*
  * Some controllers require waiting for the SD bus to become
diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h
index 7b41c6db1bb6..f7ed271a1d54 100644
--- a/include/linux/mmc/dw_mmc.h
+++ b/include/linux/mmc/dw_mmc.h
@@ -36,7 +36,6 @@ enum {
 	EVENT_XFER_COMPLETE,
 	EVENT_DATA_COMPLETE,
 	EVENT_DATA_ERROR,
-	EVENT_XFER_ERROR
 };
 
 struct mmc_data;
@@ -55,6 +54,7 @@ struct dw_mci_dma_slave {
 /**
  * struct dw_mci - MMC controller state shared between all slots
  * @lock: Spinlock protecting the queue and associated data.
+ * @irq_lock: Spinlock protecting the INTMASK setting.
  * @regs: Pointer to MMIO registers.
  * @fifo_reg: Pointer to MMIO registers for data FIFO
  * @sg: Scatterlist entry currently being processed by PIO code, if any.
@@ -65,6 +65,9 @@ struct dw_mci_dma_slave {
  * @cmd: The command currently being sent to the card, or NULL.
  * @data: The data currently being transferred, or NULL if no data
  *	transfer is in progress.
+ * @stop_abort: The command currently prepared for stoping transfer.
+ * @prev_blksz: The former transfer blksz record.
+ * @timing: Record of current ios timing.
  * @use_dma: Whether DMA channel is initialized or not.
  * @using_dma: Whether DMA is in use for the current transfer.
  * @dma_64bit_address: Whether DMA supports 64-bit address mode or not.
@@ -72,7 +75,10 @@ struct dw_mci_dma_slave {
  * @sg_cpu: Virtual address of DMA buffer.
  * @dma_ops: Pointer to platform-specific DMA callbacks.
  * @cmd_status: Snapshot of SR taken upon completion of the current
+ * @ring_size: Buffer size for idma descriptors.
  *	command. Only valid when EVENT_CMD_COMPLETE is pending.
+ * @dms: structure of slave-dma private data.
+ * @phy_regs: physical address of controller's register map
  * @data_status: Snapshot of SR taken upon completion of the current
  *	data transfer. Only valid when EVENT_DATA_COMPLETE or
  *	EVENT_DATA_ERROR is pending.
@@ -80,7 +86,6 @@ struct dw_mci_dma_slave {
  *	to be sent.
  * @dir_status: Direction of current transfer.
  * @tasklet: Tasklet running the request state machine.
- * @card_tasklet: Tasklet handling card detect.
  * @pending_events: Bitmask of events flagged by the interrupt handler
  *	to be processed by the tasklet.
  * @completed_events: Bitmask of events which the state machine has
@@ -91,6 +96,7 @@ struct dw_mci_dma_slave {
  *	rate and timeout calculations.
  * @current_speed: Configured rate of the controller.
  * @num_slots: Number of slots available.
+ * @fifoth_val: The value of FIFOTH register.
  * @verid: Denote Version ID.
  * @dev: Device associated with the MMC controller.
  * @pdata: Platform data associated with the MMC controller.
@@ -107,9 +113,11 @@ struct dw_mci_dma_slave {
  * @push_data: Pointer to FIFO push function.
  * @pull_data: Pointer to FIFO pull function.
  * @quirks: Set of quirks that apply to specific versions of the IP.
+ * @vqmmc_enabled: Status of vqmmc, should be true or false.
  * @irq_flags: The flags to be passed to request_irq.
  * @irq: The irq value to be passed to request_irq.
  * @sdio_id0: Number of slot0 in the SDIO interrupt registers.
+ * @cmd11_timer: Timer for SD3.0 voltage switch over scheme.
  * @dto_timer: Timer for broken data transfer over scheme.
  *
  * Locking
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 8dd4d290ab0d..85800b48241f 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -93,28 +93,39 @@ struct mmc_host_ops {
 	void	(*pre_req)(struct mmc_host *host, struct mmc_request *req,
 			   bool is_first_req);
 	void	(*request)(struct mmc_host *host, struct mmc_request *req);
+
+	/*
+	 * Avoid calling the next three functions too often or in a "fast
+	 * path", since underlaying controller might implement them in an
+	 * expensive and/or slow way. Also note that these functions might
+	 * sleep, so don't call them in the atomic contexts!
+	 */
+
+	/*
+	 * Notes to the set_ios callback:
+	 * ios->clock might be 0. For some controllers, setting 0Hz
+	 * as any other frequency works. However, some controllers
+	 * explicitly need to disable the clock. Otherwise e.g. voltage
+	 * switching might fail because the SDCLK is not really quiet.
+	 */
+	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
+
 	/*
-	 * Avoid calling these three functions too often or in a "fast path",
-	 * since underlaying controller might implement them in an expensive
-	 * and/or slow way.
-	 *
-	 * Also note that these functions might sleep, so don't call them
-	 * in the atomic contexts!
-	 *
 	 * Return values for the get_ro callback should be:
 	 *   0 for a read/write card
 	 *   1 for a read-only card
 	 *   -ENOSYS when not supported (equal to NULL callback)
 	 *   or a negative errno value when something bad happened
-	 *
+	 */
+	int	(*get_ro)(struct mmc_host *host);
+
+	/*
 	 * Return values for the get_cd callback should be:
 	 *   0 for a absent card
 	 *   1 for a present card
 	 *   -ENOSYS when not supported (equal to NULL callback)
 	 *   or a negative errno value when something bad happened
 	 */
-	void	(*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
-	int	(*get_ro)(struct mmc_host *host);
 	int	(*get_cd)(struct mmc_host *host);
 
 	void	(*enable_sdio_irq)(struct mmc_host *host, int enable);
diff --git a/include/linux/mmc/sh_mobile_sdhi.h b/include/linux/mmc/sh_mobile_sdhi.h
deleted file mode 100644
index 95d6f0314a7d..000000000000
--- a/include/linux/mmc/sh_mobile_sdhi.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef LINUX_MMC_SH_MOBILE_SDHI_H
-#define LINUX_MMC_SH_MOBILE_SDHI_H
-
-#include <linux/types.h>
-
-#define SH_MOBILE_SDHI_IRQ_CARD_DETECT	"card_detect"
-#define SH_MOBILE_SDHI_IRQ_SDCARD	"sdcard"
-#define SH_MOBILE_SDHI_IRQ_SDIO		"sdio"
-
-#endif /* LINUX_MMC_SH_MOBILE_SDHI_H */
diff --git a/include/linux/mmc/tmio.h b/include/linux/mmc/tmio.h
deleted file mode 100644
index 5f5cd80e9765..000000000000
--- a/include/linux/mmc/tmio.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * include/linux/mmc/tmio.h
- *
- * Copyright (C) 2016 Sang Engineering, Wolfram Sang
- * Copyright (C) 2015-16 Renesas Electronics Corporation
- * Copyright (C) 2007 Ian Molton
- * Copyright (C) 2004 Ian Molton
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Driver for the MMC / SD / SDIO cell found in:
- *
- * TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
- */
-#ifndef LINUX_MMC_TMIO_H
-#define LINUX_MMC_TMIO_H
-
-#define CTL_SD_CMD 0x00
-#define CTL_ARG_REG 0x04
-#define CTL_STOP_INTERNAL_ACTION 0x08
-#define CTL_XFER_BLK_COUNT 0xa
-#define CTL_RESPONSE 0x0c
-#define CTL_STATUS 0x1c
-#define CTL_STATUS2 0x1e
-#define CTL_IRQ_MASK 0x20
-#define CTL_SD_CARD_CLK_CTL 0x24
-#define CTL_SD_XFER_LEN 0x26
-#define CTL_SD_MEM_CARD_OPT 0x28
-#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
-#define CTL_SD_DATA_PORT 0x30
-#define CTL_TRANSACTION_CTL 0x34
-#define CTL_SDIO_STATUS 0x36
-#define CTL_SDIO_IRQ_MASK 0x38
-#define CTL_DMA_ENABLE 0xd8
-#define CTL_RESET_SD 0xe0
-#define CTL_VERSION 0xe2
-#define CTL_SDIO_REGS 0x100
-#define CTL_CLK_AND_WAIT_CTL 0x138
-#define CTL_RESET_SDIO 0x1e0
-
-/* Definitions for values the CTRL_STATUS register can take. */
-#define TMIO_STAT_CMDRESPEND    0x00000001
-#define TMIO_STAT_DATAEND       0x00000004
-#define TMIO_STAT_CARD_REMOVE   0x00000008
-#define TMIO_STAT_CARD_INSERT   0x00000010
-#define TMIO_STAT_SIGSTATE      0x00000020
-#define TMIO_STAT_WRPROTECT     0x00000080
-#define TMIO_STAT_CARD_REMOVE_A 0x00000100
-#define TMIO_STAT_CARD_INSERT_A 0x00000200
-#define TMIO_STAT_SIGSTATE_A    0x00000400
-#define TMIO_STAT_CMD_IDX_ERR   0x00010000
-#define TMIO_STAT_CRCFAIL       0x00020000
-#define TMIO_STAT_STOPBIT_ERR   0x00040000
-#define TMIO_STAT_DATATIMEOUT   0x00080000
-#define TMIO_STAT_RXOVERFLOW    0x00100000
-#define TMIO_STAT_TXUNDERRUN    0x00200000
-#define TMIO_STAT_CMDTIMEOUT    0x00400000
-#define TMIO_STAT_RXRDY         0x01000000
-#define TMIO_STAT_TXRQ          0x02000000
-#define TMIO_STAT_ILL_FUNC      0x20000000
-#define TMIO_STAT_CMD_BUSY      0x40000000
-#define TMIO_STAT_ILL_ACCESS    0x80000000
-
-#define	CLK_CTL_DIV_MASK	0xff
-#define	CLK_CTL_SCLKEN		BIT(8)
-
-#define TMIO_BBS		512		/* Boot block size */
-
-#endif /* LINUX_MMC_TMIO_H */
diff --git a/include/trace/events/mmc.h b/include/trace/events/mmc.h
new file mode 100644
index 000000000000..a72f9b94c80b
--- /dev/null
+++ b/include/trace/events/mmc.h
@@ -0,0 +1,182 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM mmc
+
+#if !defined(_TRACE_MMC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_MMC_H
+
+#include <linux/blkdev.h>
+#include <linux/mmc/core.h>
+#include <linux/mmc/host.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(mmc_request_start,
+
+	TP_PROTO(struct mmc_host *host, struct mmc_request *mrq),
+
+	TP_ARGS(host, mrq),
+
+	TP_STRUCT__entry(
+		__field(u32,			cmd_opcode)
+		__field(u32,			cmd_arg)
+		__field(unsigned int,		cmd_flags)
+		__field(unsigned int,		cmd_retries)
+		__field(u32,			stop_opcode)
+		__field(u32,			stop_arg)
+		__field(unsigned int,		stop_flags)
+		__field(unsigned int,		stop_retries)
+		__field(u32,			sbc_opcode)
+		__field(u32,			sbc_arg)
+		__field(unsigned int,		sbc_flags)
+		__field(unsigned int,		sbc_retries)
+		__field(unsigned int,		blocks)
+		__field(unsigned int,		blksz)
+		__field(unsigned int,		data_flags)
+		__field(unsigned int,		can_retune)
+		__field(unsigned int,		doing_retune)
+		__field(unsigned int,		retune_now)
+		__field(int,			need_retune)
+		__field(int,			hold_retune)
+		__field(unsigned int,		retune_period)
+		__field(struct mmc_request *,	mrq)
+		__string(name,			mmc_hostname(host))
+	),
+
+	TP_fast_assign(
+		__entry->cmd_opcode = mrq->cmd->opcode;
+		__entry->cmd_arg = mrq->cmd->arg;
+		__entry->cmd_flags = mrq->cmd->flags;
+		__entry->cmd_retries = mrq->cmd->retries;
+		__entry->stop_opcode = mrq->stop ? mrq->stop->opcode : 0;
+		__entry->stop_arg = mrq->stop ? mrq->stop->arg : 0;
+		__entry->stop_flags = mrq->stop ? mrq->stop->flags : 0;
+		__entry->stop_retries = mrq->stop ? mrq->stop->retries : 0;
+		__entry->sbc_opcode = mrq->sbc ? mrq->sbc->opcode : 0;
+		__entry->sbc_arg = mrq->sbc ? mrq->sbc->arg : 0;
+		__entry->sbc_flags = mrq->sbc ? mrq->sbc->flags : 0;
+		__entry->sbc_retries = mrq->sbc ? mrq->sbc->retries : 0;
+		__entry->blksz = mrq->data ? mrq->data->blksz : 0;
+		__entry->blocks = mrq->data ? mrq->data->blocks : 0;
+		__entry->data_flags = mrq->data ? mrq->data->flags : 0;
+		__entry->can_retune = host->can_retune;
+		__entry->doing_retune = host->doing_retune;
+		__entry->retune_now = host->retune_now;
+		__entry->need_retune = host->need_retune;
+		__entry->hold_retune = host->hold_retune;
+		__entry->retune_period = host->retune_period;
+		__assign_str(name, mmc_hostname(host));
+		__entry->mrq = mrq;
+	),
+
+	TP_printk("%s: start struct mmc_request[%p]: "
+		  "cmd_opcode=%u cmd_arg=0x%x cmd_flags=0x%x cmd_retries=%u "
+		  "stop_opcode=%u stop_arg=0x%x stop_flags=0x%x stop_retries=%u "
+		  "sbc_opcode=%u sbc_arg=0x%x sbc_flags=0x%x sbc_retires=%u "
+		  "blocks=%u block_size=%u data_flags=0x%x "
+		  "can_retune=%u doing_retune=%u retune_now=%u "
+		  "need_retune=%d hold_retune=%d retune_period=%u",
+		  __get_str(name), __entry->mrq,
+		  __entry->cmd_opcode, __entry->cmd_arg,
+		  __entry->cmd_flags, __entry->cmd_retries,
+		  __entry->stop_opcode, __entry->stop_arg,
+		  __entry->stop_flags, __entry->stop_retries,
+		  __entry->sbc_opcode, __entry->sbc_arg,
+		  __entry->sbc_flags, __entry->sbc_retries,
+		  __entry->blocks, __entry->blksz, __entry->data_flags,
+		  __entry->can_retune, __entry->doing_retune,
+		  __entry->retune_now, __entry->need_retune,
+		  __entry->hold_retune, __entry->retune_period)
+);
+
+TRACE_EVENT(mmc_request_done,
+
+	TP_PROTO(struct mmc_host *host, struct mmc_request *mrq),
+
+	TP_ARGS(host, mrq),
+
+	TP_STRUCT__entry(
+		__field(u32,			cmd_opcode)
+		__field(int,			cmd_err)
+		__array(u32,			cmd_resp,	4)
+		__field(unsigned int,		cmd_retries)
+		__field(u32,			stop_opcode)
+		__field(int,			stop_err)
+		__array(u32,			stop_resp,	4)
+		__field(unsigned int,		stop_retries)
+		__field(u32,			sbc_opcode)
+		__field(int,			sbc_err)
+		__array(u32,			sbc_resp,	4)
+		__field(unsigned int,		sbc_retries)
+		__field(unsigned int,		bytes_xfered)
+		__field(int,			data_err)
+		__field(unsigned int,		can_retune)
+		__field(unsigned int,		doing_retune)
+		__field(unsigned int,		retune_now)
+		__field(int,			need_retune)
+		__field(int,			hold_retune)
+		__field(unsigned int,		retune_period)
+		__field(struct mmc_request *,	mrq)
+		__string(name,			mmc_hostname(host))
+	),
+
+	TP_fast_assign(
+		__entry->cmd_opcode = mrq->cmd->opcode;
+		__entry->cmd_err = mrq->cmd->error;
+		memcpy(__entry->cmd_resp, mrq->cmd->resp, 4);
+		__entry->cmd_retries = mrq->cmd->retries;
+		__entry->stop_opcode = mrq->stop ? mrq->stop->opcode : 0;
+		__entry->stop_err = mrq->stop ? mrq->stop->error : 0;
+		__entry->stop_resp[0] = mrq->stop ? mrq->stop->resp[0] : 0;
+		__entry->stop_resp[1] = mrq->stop ? mrq->stop->resp[1] : 0;
+		__entry->stop_resp[2] = mrq->stop ? mrq->stop->resp[2] : 0;
+		__entry->stop_resp[3] = mrq->stop ? mrq->stop->resp[3] : 0;
+		__entry->stop_retries = mrq->stop ? mrq->stop->retries : 0;
+		__entry->sbc_opcode = mrq->sbc ? mrq->sbc->opcode : 0;
+		__entry->sbc_err = mrq->sbc ? mrq->sbc->error : 0;
+		__entry->sbc_resp[0] = mrq->sbc ? mrq->sbc->resp[0] : 0;
+		__entry->sbc_resp[1] = mrq->sbc ? mrq->sbc->resp[1] : 0;
+		__entry->sbc_resp[2] = mrq->sbc ? mrq->sbc->resp[2] : 0;
+		__entry->sbc_resp[3] = mrq->sbc ? mrq->sbc->resp[3] : 0;
+		__entry->sbc_retries = mrq->sbc ? mrq->sbc->retries : 0;
+		__entry->bytes_xfered = mrq->data ? mrq->data->bytes_xfered : 0;
+		__entry->data_err = mrq->data ? mrq->data->error : 0;
+		__entry->can_retune = host->can_retune;
+		__entry->doing_retune = host->doing_retune;
+		__entry->retune_now = host->retune_now;
+		__entry->need_retune = host->need_retune;
+		__entry->hold_retune = host->hold_retune;
+		__entry->retune_period = host->retune_period;
+		__assign_str(name, mmc_hostname(host));
+		__entry->mrq = mrq;
+	),
+
+	TP_printk("%s: end struct mmc_request[%p]: "
+		  "cmd_opcode=%u cmd_err=%d cmd_resp=0x%x 0x%x 0x%x 0x%x "
+		  "cmd_retries=%u stop_opcode=%u stop_err=%d "
+		  "stop_resp=0x%x 0x%x 0x%x 0x%x stop_retries=%u "
+		  "sbc_opcode=%u sbc_err=%d sbc_resp=0x%x 0x%x 0x%x 0x%x "
+		  "sbc_retries=%u bytes_xfered=%u data_err=%d "
+		  "can_retune=%u doing_retune=%u retune_now=%u need_retune=%d "
+		  "hold_retune=%d retune_period=%u",
+		  __get_str(name), __entry->mrq,
+		  __entry->cmd_opcode, __entry->cmd_err,
+		  __entry->cmd_resp[0], __entry->cmd_resp[1],
+		  __entry->cmd_resp[2], __entry->cmd_resp[3],
+		  __entry->cmd_retries,
+		  __entry->stop_opcode, __entry->stop_err,
+		  __entry->stop_resp[0], __entry->stop_resp[1],
+		  __entry->stop_resp[2], __entry->stop_resp[3],
+		  __entry->stop_retries,
+		  __entry->sbc_opcode, __entry->sbc_err,
+		  __entry->sbc_resp[0], __entry->sbc_resp[1],
+		  __entry->sbc_resp[2], __entry->sbc_resp[3],
+		  __entry->sbc_retries,
+		  __entry->bytes_xfered, __entry->data_err,
+		  __entry->can_retune, __entry->doing_retune,
+		  __entry->retune_now, __entry->need_retune,
+		  __entry->hold_retune, __entry->retune_period)
+);
+
+#endif /* _TRACE_MMC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>