From fffe5d5aa05b4e69f79bc75a51c5ee0fc6203fa5 Mon Sep 17 00:00:00 2001
From: Qiang Liu <qiang.liu@freescale.com>
Date: Tue, 8 Nov 2011 08:43:08 -0500
Subject: mmc: sd: Macro name cleanup for high speed dtr

Add new macros for the high speed 50MHz case, rather than having
a confusing reuse of the value for UHS SDR50, which is 100MHz.

Reported-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/core/sd.c    | 4 ++--
 include/linux/mmc/card.h | 3 +++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index f2a05ea40f2a..f54392c4638a 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -307,8 +307,8 @@ static int mmc_read_switch(struct mmc_card *card)
 		goto out;
 	}
 
-	if (status[13] & UHS_SDR50_BUS_SPEED)
-		card->sw_caps.hs_max_dtr = 50000000;
+	if (status[13] & SD_MODE_HIGH_SPEED)
+		card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR;
 
 	if (card->scr.sda_spec3) {
 		card->sw_caps.sd3_bus_mode = status[13];
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index c8ef9bc54d50..2c9be29684cf 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -110,6 +110,7 @@ struct sd_ssr {
 struct sd_switch_caps {
 	unsigned int		hs_max_dtr;
 	unsigned int		uhs_max_dtr;
+#define HIGH_SPEED_MAX_DTR	50000000
 #define UHS_SDR104_MAX_DTR	208000000
 #define UHS_SDR50_MAX_DTR	100000000
 #define UHS_DDR50_MAX_DTR	50000000
@@ -117,11 +118,13 @@ struct sd_switch_caps {
 #define UHS_SDR12_MAX_DTR	25000000
 	unsigned int		sd3_bus_mode;
 #define UHS_SDR12_BUS_SPEED	0
+#define HIGH_SPEED_BUS_SPEED	1
 #define UHS_SDR25_BUS_SPEED	1
 #define UHS_SDR50_BUS_SPEED	2
 #define UHS_SDR104_BUS_SPEED	3
 #define UHS_DDR50_BUS_SPEED	4
 
+#define SD_MODE_HIGH_SPEED	(1 << HIGH_SPEED_BUS_SPEED)
 #define SD_MODE_UHS_SDR12	(1 << UHS_SDR12_BUS_SPEED)
 #define SD_MODE_UHS_SDR25	(1 << UHS_SDR25_BUS_SPEED)
 #define SD_MODE_UHS_SDR50	(1 << UHS_SDR50_BUS_SPEED)
-- 
cgit v1.2.2


From 052d81da6e6f0f8839ef6d5a46f215fc8cd99d5a Mon Sep 17 00:00:00 2001
From: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Date: Wed, 26 Oct 2011 10:52:17 +0200
Subject: mmc: sdio: Fix to support any block size optimally

This patch allows any block size to be set on the SDIO link,
and still have an arbitrary sized packet (adjusted in size by
using sdio_align_size) transferred in an optimal way
(preferably one transfer).

Previously if the block size was larger than the default of
512 bytes and the transfer size was exactly one block size
(possibly thanks to using sdio_align_size to get an optimal
transfer size), it was sent as a number of byte transfers instead
of one block transfer. Also if the number of blocks was
(max_blocks * N) + 1, the tranfer would be conducted with a number
of blocks and finished off with a number of byte transfers.

When doing this change it was also possible to break out the quirk
for broken byte mode in a much cleaner way, and collect the logic of
when to do byte or block transfer in one function instead of two.

Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/core/sdio_io.c  |  8 ++++++--
 drivers/mmc/core/sdio_ops.c | 14 +++++---------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index b1f3168f791b..8f6f5ac131fc 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -196,6 +196,9 @@ static inline unsigned int sdio_max_byte_size(struct sdio_func *func)
 	else
 		mval = min(mval, func->max_blksize);
 
+	if (mmc_card_broken_byte_mode_512(func->card))
+		return min(mval, 511u);
+
 	return min(mval, 512u); /* maximum size for byte mode */
 }
 
@@ -314,7 +317,7 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
 			func->card->host->max_seg_size / func->cur_blksize);
 		max_blocks = min(max_blocks, 511u);
 
-		while (remainder > func->cur_blksize) {
+		while (remainder >= func->cur_blksize) {
 			unsigned blocks;
 
 			blocks = remainder / func->cur_blksize;
@@ -339,8 +342,9 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write,
 	while (remainder > 0) {
 		size = min(remainder, sdio_max_byte_size(func));
 
+		/* Indicate byte mode by setting "blocks" = 0 */
 		ret = mmc_io_rw_extended(func->card, write, func->num, addr,
-			 incr_addr, buf, 1, size);
+			 incr_addr, buf, 0, size);
 		if (ret)
 			return ret;
 
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index b0517cc06200..d29e20630eed 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -128,8 +128,6 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
 
 	BUG_ON(!card);
 	BUG_ON(fn > 7);
-	BUG_ON(blocks == 1 && blksz > 512);
-	WARN_ON(blocks == 0);
 	WARN_ON(blksz == 0);
 
 	/* sanity check */
@@ -144,22 +142,20 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
 	cmd.arg |= fn << 28;
 	cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
 	cmd.arg |= addr << 9;
-	if (blocks == 1 && blksz < 512)
-		cmd.arg |= blksz;			/* byte mode */
-	else if (blocks == 1 && blksz == 512 &&
-		 !(mmc_card_broken_byte_mode_512(card)))
-		cmd.arg |= 0;				/* byte mode, 0==512 */
+	if (blocks == 0)
+		cmd.arg |= (blksz == 512) ? 0 : blksz;	/* byte mode */
 	else
 		cmd.arg |= 0x08000000 | blocks;		/* block mode */
 	cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
 
 	data.blksz = blksz;
-	data.blocks = blocks;
+	/* Code in host drivers/fwk assumes that "blocks" always is >=1 */
+	data.blocks = blocks ? blocks : 1;
 	data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
 	data.sg = &sg;
 	data.sg_len = 1;
 
-	sg_init_one(&sg, buf, blksz * blocks);
+	sg_init_one(&sg, buf, data.blksz * data.blocks);
 
 	mmc_set_data_timeout(&data, card);
 
-- 
cgit v1.2.2


From df16219f365f7f5a2d88a6e123251d57255cca3f Mon Sep 17 00:00:00 2001
From: Giuseppe CAVALLARO <peppe.cavallaro@st.com>
Date: Fri, 4 Nov 2011 13:53:19 +0100
Subject: mmc: debugfs: expose the SDCLK frq in sys ios

This patch is to expose the actual SDCLK frequency in
/sys/kernel/debug/mmcX/ios entry.

For example, if the max clk for a normal speed card is 20MHz this
is reported in /sys/kernel/debug/mmcX/ios.  Unfortunately the actual
SDCLK frequency (i.e. Baseclock / divisor) is not reported at all:
for example, in that case, on Arasan HC, it should be 48/4=12 (MHz).

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/core/debugfs.c |  2 ++
 drivers/mmc/host/sdhci.c   | 10 ++++++++++
 include/linux/mmc/host.h   |  2 ++
 3 files changed, 14 insertions(+)

diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 3923880118b6..027615d3bf3e 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -57,6 +57,8 @@ static int mmc_ios_show(struct seq_file *s, void *data)
 	const char *str;
 
 	seq_printf(s, "clock:\t\t%u Hz\n", ios->clock);
+	if (host->actual_clock)
+		seq_printf(s, "actual clock:\t%u Hz\n", host->actual_clock);
 	seq_printf(s, "vdd:\t\t%u ", ios->vdd);
 	if ((1 << ios->vdd) & MMC_VDD_165_195)
 		seq_printf(s, "(1.65 - 1.95 V)\n");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 19ed580f2cab..a7c23118dab2 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1066,12 +1066,15 @@ static void sdhci_finish_command(struct sdhci_host *host)
 static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 {
 	int div = 0; /* Initialized for compiler warning */
+	int real_div = div, clk_mul = 1;
 	u16 clk = 0;
 	unsigned long timeout;
 
 	if (clock == host->clock)
 		return;
 
+	host->mmc->actual_clock = 0;
+
 	if (host->ops->set_clock) {
 		host->ops->set_clock(host, clock);
 		if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
@@ -1109,6 +1112,8 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 				 * Control register.
 				 */
 				clk = SDHCI_PROG_CLOCK_MODE;
+				real_div = div;
+				clk_mul = host->clk_mul;
 				div--;
 			}
 		} else {
@@ -1122,6 +1127,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 						break;
 				}
 			}
+			real_div = div;
 			div >>= 1;
 		}
 	} else {
@@ -1130,9 +1136,13 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
 			if ((host->max_clk / div) <= clock)
 				break;
 		}
+		real_div = div;
 		div >>= 1;
 	}
 
+	if (real_div)
+		host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
+
 	clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
 	clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
 		<< SDHCI_DIVIDER_HI_SHIFT;
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index a3ac9c48e5de..cea064f73514 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -323,6 +323,8 @@ struct mmc_host {
 	struct fault_attr	fail_mmc_request;
 #endif
 
+	unsigned int		actual_clock;	/* Actual HC clock rate */
+
 	unsigned long		private[0] ____cacheline_aligned;
 };
 
-- 
cgit v1.2.2


From c59d44739a8519cb7abdcd7cb7fd88f807dec9fd Mon Sep 17 00:00:00 2001
From: Chris Ball <cjb@laptop.org>
Date: Fri, 11 Nov 2011 22:01:43 -0500
Subject: mmc: card: Use manufacturer ID symbols in card quirks.

No functional change; adds macros for card manufacturer IDs.

Signed-off-by: Chris Ball <cjb@laptop.org>
Cc: Andrei E. Warkentin <andrey.warkentin@gmail.com>
Cc: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
---
 drivers/mmc/card/block.c | 27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1e0e27cbe987..c80bb6de40b8 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1584,13 +1584,22 @@ static int mmc_add_disk(struct mmc_blk_data *md)
 	return ret;
 }
 
+#define CID_MANFID_SANDISK	0x2
+#define CID_MANFID_TOSHIBA	0x11
+#define CID_MANFID_MICRON	0x13
+
 static const struct mmc_fixup blk_fixups[] =
 {
-	MMC_FIXUP("SEM02G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
-	MMC_FIXUP("SEM04G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
-	MMC_FIXUP("SEM08G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
-	MMC_FIXUP("SEM16G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
-	MMC_FIXUP("SEM32G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38),
+	MMC_FIXUP("SEM02G", CID_MANFID_SANDISK, 0x100, add_quirk,
+		  MMC_QUIRK_INAND_CMD38),
+	MMC_FIXUP("SEM04G", CID_MANFID_SANDISK, 0x100, add_quirk,
+		  MMC_QUIRK_INAND_CMD38),
+	MMC_FIXUP("SEM08G", CID_MANFID_SANDISK, 0x100, add_quirk,
+		  MMC_QUIRK_INAND_CMD38),
+	MMC_FIXUP("SEM16G", CID_MANFID_SANDISK, 0x100, add_quirk,
+		  MMC_QUIRK_INAND_CMD38),
+	MMC_FIXUP("SEM32G", CID_MANFID_SANDISK, 0x100, add_quirk,
+		  MMC_QUIRK_INAND_CMD38),
 
 	/*
 	 * Some MMC cards experience performance degradation with CMD23
@@ -1600,18 +1609,18 @@ static const struct mmc_fixup blk_fixups[] =
 	 *
 	 * N.B. This doesn't affect SD cards.
 	 */
-	MMC_FIXUP("MMC08G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
+	MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_BLK_NO_CMD23),
-	MMC_FIXUP("MMC16G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
+	MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_BLK_NO_CMD23),
-	MMC_FIXUP("MMC32G", 0x11, CID_OEMID_ANY, add_quirk_mmc,
+	MMC_FIXUP("MMC32G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
 		  MMC_QUIRK_BLK_NO_CMD23),
 
 	/*
 	 * Some Micron MMC cards needs longer data read timeout than
 	 * indicated in CSD.
 	 */
-	MMC_FIXUP(CID_NAME_ANY, 0x13, 0x200, add_quirk_mmc,
+	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
 		  MMC_QUIRK_LONG_READ_TIME),
 
 	END_FIXUP
-- 
cgit v1.2.2


From 597dd9d79cfbbb1636d00a7fd0880355d9b20c41 Mon Sep 17 00:00:00 2001
From: Sujit Reddy Thumma <sthumma@codeaurora.org>
Date: Mon, 14 Nov 2011 13:53:29 +0530
Subject: mmc: core: Use delayed work in clock gating framework

Current clock gating framework disables the MCI clock as soon as the
request is completed and enables it when a request arrives. This aggressive
clock gating framework, when enabled, cause following issues:

When there are back-to-back requests from the Queue layer, we unnecessarily
end up disabling and enabling the clocks between these requests since 8MCLK
clock cycles is a very short duration compared to the time delay between
back to back requests reaching the MMC layer. This overhead can effect the
overall performance depending on how long the clock enable and disable
calls take which is platform dependent. For example on some platforms we
can have clock control not on the local processor, but on a different
subsystem and the time taken to perform the clock enable/disable can add
significant overhead.

Also if the host controller driver decides to disable the host clock too
when mmc_set_ios function is called with ios.clock=0, it adds additional
delay and it is highly possible that the next request had already arrived
and unnecessarily blocked in enabling the clocks. This is seen frequently
when the processor is executing at high speeds and in multi-core platforms
thus reduces the overall throughput compared to if clock gating is
disabled.

Fix this by delaying turning off the clocks by posting request on
delayed workqueue. Also cancel the unscheduled pending work, if any,
when there is access to card.

sysfs entry is provided to tune the delay as needed, default
value set to 200ms.

Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 Documentation/mmc/mmc-dev-attrs.txt | 10 +++++++
 drivers/mmc/core/host.c             | 57 ++++++++++++++++++++++++++++++++++---
 include/linux/mmc/host.h            |  4 ++-
 3 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev-attrs.txt
index 8898a95b41e5..b0245565875a 100644
--- a/Documentation/mmc/mmc-dev-attrs.txt
+++ b/Documentation/mmc/mmc-dev-attrs.txt
@@ -64,3 +64,13 @@ Note on Erase Size and Preferred Erase Size:
 	size specified by the card.
 
 	"preferred_erase_size" is in bytes.
+
+SD/MMC/SDIO Clock Gating Attribute
+==================================
+
+Read and write access is provided to following attribute.
+This attribute appears only if CONFIG_MMC_CLKGATE is enabled.
+
+	clkgate_delay	Tune the clock gating delay with desired value in milli seconds.
+
+echo <desired delay> > /sys/class/mmc_host/mmcX/clkgate_delay
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index d31c78b72b0f..817a76039743 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -54,6 +54,31 @@ static DEFINE_IDR(mmc_host_idr);
 static DEFINE_SPINLOCK(mmc_host_lock);
 
 #ifdef CONFIG_MMC_CLKGATE
+static ssize_t clkgate_delay_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct mmc_host *host = cls_dev_to_mmc_host(dev);
+	return snprintf(buf, PAGE_SIZE, "%lu millisecs\n",
+			host->clkgate_delay);
+}
+
+static ssize_t clkgate_delay_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct mmc_host *host = cls_dev_to_mmc_host(dev);
+	unsigned long flags, value;
+
+	if (kstrtoul(buf, 0, &value))
+		return -EINVAL;
+
+	spin_lock_irqsave(&host->clk_lock, flags);
+	host->clkgate_delay = value;
+	spin_unlock_irqrestore(&host->clk_lock, flags);
+
+	pr_info("%s: clock gate delay set to %lu ms\n",
+			mmc_hostname(host), value);
+	return count;
+}
 
 /*
  * Enabling clock gating will make the core call out to the host
@@ -114,7 +139,7 @@ static void mmc_host_clk_gate_delayed(struct mmc_host *host)
 static void mmc_host_clk_gate_work(struct work_struct *work)
 {
 	struct mmc_host *host = container_of(work, struct mmc_host,
-					      clk_gate_work);
+					      clk_gate_work.work);
 
 	mmc_host_clk_gate_delayed(host);
 }
@@ -131,6 +156,8 @@ void mmc_host_clk_hold(struct mmc_host *host)
 {
 	unsigned long flags;
 
+	/* cancel any clock gating work scheduled by mmc_host_clk_release() */
+	cancel_delayed_work_sync(&host->clk_gate_work);
 	mutex_lock(&host->clk_gate_mutex);
 	spin_lock_irqsave(&host->clk_lock, flags);
 	if (host->clk_gated) {
@@ -180,7 +207,8 @@ void mmc_host_clk_release(struct mmc_host *host)
 	host->clk_requests--;
 	if (mmc_host_may_gate_card(host->card) &&
 	    !host->clk_requests)
-		queue_work(system_nrt_wq, &host->clk_gate_work);
+		queue_delayed_work(system_nrt_wq, &host->clk_gate_work,
+				msecs_to_jiffies(host->clkgate_delay));
 	spin_unlock_irqrestore(&host->clk_lock, flags);
 }
 
@@ -213,8 +241,13 @@ static inline void mmc_host_clk_init(struct mmc_host *host)
 	host->clk_requests = 0;
 	/* Hold MCI clock for 8 cycles by default */
 	host->clk_delay = 8;
+	/*
+	 * Default clock gating delay is 200ms.
+	 * This value can be tuned by writing into sysfs entry.
+	 */
+	host->clkgate_delay = 200;
 	host->clk_gated = false;
-	INIT_WORK(&host->clk_gate_work, mmc_host_clk_gate_work);
+	INIT_DELAYED_WORK(&host->clk_gate_work, mmc_host_clk_gate_work);
 	spin_lock_init(&host->clk_lock);
 	mutex_init(&host->clk_gate_mutex);
 }
@@ -229,7 +262,7 @@ static inline void mmc_host_clk_exit(struct mmc_host *host)
 	 * Wait for any outstanding gate and then make sure we're
 	 * ungated before exiting.
 	 */
-	if (cancel_work_sync(&host->clk_gate_work))
+	if (cancel_delayed_work_sync(&host->clk_gate_work))
 		mmc_host_clk_gate_delayed(host);
 	if (host->clk_gated)
 		mmc_host_clk_hold(host);
@@ -237,6 +270,17 @@ static inline void mmc_host_clk_exit(struct mmc_host *host)
 	WARN_ON(host->clk_requests > 1);
 }
 
+static inline void mmc_host_clk_sysfs_init(struct mmc_host *host)
+{
+	host->clkgate_delay_attr.show = clkgate_delay_show;
+	host->clkgate_delay_attr.store = clkgate_delay_store;
+	sysfs_attr_init(&host->clkgate_delay_attr.attr);
+	host->clkgate_delay_attr.attr.name = "clkgate_delay";
+	host->clkgate_delay_attr.attr.mode = S_IRUGO | S_IWUSR;
+	if (device_create_file(&host->class_dev, &host->clkgate_delay_attr))
+		pr_err("%s: Failed to create clkgate_delay sysfs entry\n",
+				mmc_hostname(host));
+}
 #else
 
 static inline void mmc_host_clk_init(struct mmc_host *host)
@@ -247,6 +291,10 @@ static inline void mmc_host_clk_exit(struct mmc_host *host)
 {
 }
 
+static inline void mmc_host_clk_sysfs_init(struct mmc_host *host)
+{
+}
+
 #endif
 
 /**
@@ -335,6 +383,7 @@ int mmc_add_host(struct mmc_host *host)
 #ifdef CONFIG_DEBUG_FS
 	mmc_add_host_debugfs(host);
 #endif
+	mmc_host_clk_sysfs_init(host);
 
 	mmc_start_host(host);
 	register_pm_notifier(&host->pm_notify);
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index cea064f73514..706f72279a17 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -253,10 +253,12 @@ struct mmc_host {
 	int			clk_requests;	/* internal reference counter */
 	unsigned int		clk_delay;	/* number of MCI clk hold cycles */
 	bool			clk_gated;	/* clock gated */
-	struct work_struct	clk_gate_work; /* delayed clock gate */
+	struct delayed_work	clk_gate_work; /* delayed clock gate */
 	unsigned int		clk_old;	/* old clock value cache */
 	spinlock_t		clk_lock;	/* lock for clk fields */
 	struct mutex		clk_gate_mutex;	/* mutex for clock gating */
+	struct device_attribute clkgate_delay_attr;
+	unsigned long           clkgate_delay;
 #endif
 
 	/* host specific block data */
-- 
cgit v1.2.2


From b70a7fab26db65f7daaf04f49a3bd673250f48c7 Mon Sep 17 00:00:00 2001
From: Viresh Kumar <viresh.kumar@st.com>
Date: Tue, 15 Nov 2011 16:24:40 +0530
Subject: mmc: sdhci-spear: Implement suspend/resume

Suspend/Resume is missing from sdhci-spear driver. This patch adds
support for suspend/resume for this driver.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/sdhci-spear.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 63cc8b6a1c9e..dee70b66305a 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/pm.h>
 #include <linux/slab.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/sdhci-spear.h>
@@ -271,10 +272,49 @@ static int __devexit sdhci_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_PM
+static int sdhci_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct spear_sdhci *sdhci = dev_get_platdata(dev);
+	pm_message_t state = {.event = 0};
+	int ret;
+
+	ret = sdhci_suspend_host(host, state);
+	if (!ret)
+		clk_disable(sdhci->clk);
+
+	return ret;
+}
+
+static int sdhci_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct spear_sdhci *sdhci = dev_get_platdata(dev);
+	int ret;
+
+	ret = clk_enable(sdhci->clk);
+	if (ret) {
+		dev_dbg(dev, "Resume: Error enabling clock\n");
+		return ret;
+	}
+
+	return sdhci_resume_host(host);
+}
+
+const struct dev_pm_ops sdhci_pm_ops = {
+	.suspend	= sdhci_suspend,
+	.resume		= sdhci_resume,
+};
+#endif
+
 static struct platform_driver sdhci_driver = {
 	.driver = {
 		.name	= "sdhci",
 		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm	= &sdhci_pm_ops,
+#endif
 	},
 	.probe		= sdhci_probe,
 	.remove		= __devexit_p(sdhci_remove),
-- 
cgit v1.2.2


From a303c5319c8e6ab0e744ebca118da8420043b2c3 Mon Sep 17 00:00:00 2001
From: Philip Rakity <prakity@marvell.com>
Date: Mon, 14 Nov 2011 19:14:38 -0800
Subject: mmc: sdio: support SDIO UHS cards

This patch adds support for sdio UHS cards per the version 3.0
spec.

UHS mode is only enabled for version 3.0 cards when both the
host and the controller support UHS modes.

1.8v signaling support is removed if both the card and the
host do not support UHS.  This is done to maintain
compatibility and some system/card combinations break when
1.8v signaling is enabled when the host does not support UHS.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Aaron Lu <Aaron.lu@amd.com>
Reviewed-by: Arindam Nath <arindam.nath@amd.com>
Tested-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/core/bus.c   |   2 +-
 drivers/mmc/core/sd.c    |   2 +-
 drivers/mmc/core/sdio.c  | 329 +++++++++++++++++++++++++++++++++++++++++++----
 include/linux/mmc/card.h |   4 +-
 include/linux/mmc/sdio.h |  29 ++++-
 5 files changed, 336 insertions(+), 30 deletions(-)

diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 6be49249895a..f8a228a61fd4 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -305,7 +305,7 @@ int mmc_add_card(struct mmc_card *card)
 	} else {
 		printk(KERN_INFO "%s: new %s%s%s card at address %04x\n",
 			mmc_hostname(card->host),
-			mmc_sd_card_uhs(card) ? "ultra high speed " :
+			mmc_card_uhs(card) ? "ultra high speed " :
 			(mmc_card_highspeed(card) ? "high speed " : ""),
 			mmc_card_ddr_mode(card) ? "DDR " : "",
 			type, card->rca);
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index f54392c4638a..85b858f6d5d4 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -960,7 +960,7 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
 			goto free_card;
 
 		/* Card is an ultra-high-speed card */
-		mmc_sd_card_set_uhs(card);
+		mmc_card_set_uhs(card);
 
 		/*
 		 * Since initialization is now complete, enable preset
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 3ab565e32a6a..8c04f7f46dec 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -102,6 +102,7 @@ static int sdio_read_cccr(struct mmc_card *card)
 	int ret;
 	int cccr_vsn;
 	unsigned char data;
+	unsigned char speed;
 
 	memset(&card->cccr, 0, sizeof(struct sdio_cccr));
 
@@ -140,12 +141,60 @@ static int sdio_read_cccr(struct mmc_card *card)
 	}
 
 	if (cccr_vsn >= SDIO_CCCR_REV_1_20) {
-		ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &data);
+		ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed);
 		if (ret)
 			goto out;
 
-		if (data & SDIO_SPEED_SHS)
-			card->cccr.high_speed = 1;
+		card->scr.sda_spec3 = 0;
+		card->sw_caps.sd3_bus_mode = 0;
+		card->sw_caps.sd3_drv_type = 0;
+		if (cccr_vsn >= SDIO_CCCR_REV_3_00) {
+			card->scr.sda_spec3 = 1;
+			ret = mmc_io_rw_direct(card, 0, 0,
+				SDIO_CCCR_UHS, 0, &data);
+			if (ret)
+				goto out;
+
+			if (card->host->caps &
+				(MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
+				 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
+				 MMC_CAP_UHS_DDR50)) {
+				if (data & SDIO_UHS_DDR50)
+					card->sw_caps.sd3_bus_mode
+						|= SD_MODE_UHS_DDR50;
+
+				if (data & SDIO_UHS_SDR50)
+					card->sw_caps.sd3_bus_mode
+						|= SD_MODE_UHS_SDR50;
+
+				if (data & SDIO_UHS_SDR104)
+					card->sw_caps.sd3_bus_mode
+						|= SD_MODE_UHS_SDR104;
+			}
+
+			ret = mmc_io_rw_direct(card, 0, 0,
+				SDIO_CCCR_DRIVE_STRENGTH, 0, &data);
+			if (ret)
+				goto out;
+
+			if (data & SDIO_DRIVE_SDTA)
+				card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A;
+			if (data & SDIO_DRIVE_SDTC)
+				card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C;
+			if (data & SDIO_DRIVE_SDTD)
+				card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D;
+		}
+
+		/* if no uhs mode ensure we check for high speed */
+		if (!card->sw_caps.sd3_bus_mode) {
+			if (speed & SDIO_SPEED_SHS) {
+				card->cccr.high_speed = 1;
+				card->sw_caps.hs_max_dtr = 50000000;
+			} else {
+				card->cccr.high_speed = 0;
+				card->sw_caps.hs_max_dtr = 25000000;
+			}
+		}
 	}
 
 out:
@@ -327,6 +376,193 @@ static unsigned mmc_sdio_get_max_clock(struct mmc_card *card)
 	return max_dtr;
 }
 
+static unsigned char host_drive_to_sdio_drive(int host_strength)
+{
+	switch (host_strength) {
+	case MMC_SET_DRIVER_TYPE_A:
+		return SDIO_DTSx_SET_TYPE_A;
+	case MMC_SET_DRIVER_TYPE_B:
+		return SDIO_DTSx_SET_TYPE_B;
+	case MMC_SET_DRIVER_TYPE_C:
+		return SDIO_DTSx_SET_TYPE_C;
+	case MMC_SET_DRIVER_TYPE_D:
+		return SDIO_DTSx_SET_TYPE_D;
+	default:
+		return SDIO_DTSx_SET_TYPE_B;
+	}
+}
+
+static void sdio_select_driver_type(struct mmc_card *card)
+{
+	int host_drv_type = SD_DRIVER_TYPE_B;
+	int card_drv_type = SD_DRIVER_TYPE_B;
+	int drive_strength;
+	unsigned char card_strength;
+	int err;
+
+	/*
+	 * If the host doesn't support any of the Driver Types A,C or D,
+	 * or there is no board specific handler then default Driver
+	 * Type B is used.
+	 */
+	if (!(card->host->caps &
+		(MMC_CAP_DRIVER_TYPE_A |
+		 MMC_CAP_DRIVER_TYPE_C |
+		 MMC_CAP_DRIVER_TYPE_D)))
+		return;
+
+	if (!card->host->ops->select_drive_strength)
+		return;
+
+	if (card->host->caps & MMC_CAP_DRIVER_TYPE_A)
+		host_drv_type |= SD_DRIVER_TYPE_A;
+
+	if (card->host->caps & MMC_CAP_DRIVER_TYPE_C)
+		host_drv_type |= SD_DRIVER_TYPE_C;
+
+	if (card->host->caps & MMC_CAP_DRIVER_TYPE_D)
+		host_drv_type |= SD_DRIVER_TYPE_D;
+
+	if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A)
+		card_drv_type |= SD_DRIVER_TYPE_A;
+
+	if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C)
+		card_drv_type |= SD_DRIVER_TYPE_C;
+
+	if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D)
+		card_drv_type |= SD_DRIVER_TYPE_D;
+
+	/*
+	 * The drive strength that the hardware can support
+	 * depends on the board design.  Pass the appropriate
+	 * information and let the hardware specific code
+	 * return what is possible given the options
+	 */
+	drive_strength = card->host->ops->select_drive_strength(
+		card->sw_caps.uhs_max_dtr,
+		host_drv_type, card_drv_type);
+
+	/* if error just use default for drive strength B */
+	err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_DRIVE_STRENGTH, 0,
+		&card_strength);
+	if (err)
+		return;
+
+	card_strength &= ~(SDIO_DRIVE_DTSx_MASK<<SDIO_DRIVE_DTSx_SHIFT);
+	card_strength |= host_drive_to_sdio_drive(drive_strength);
+
+	err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_DRIVE_STRENGTH,
+		card_strength, NULL);
+
+	/* if error default to drive strength B */
+	if (!err)
+		mmc_set_driver_type(card->host, drive_strength);
+}
+
+
+static int sdio_set_bus_speed_mode(struct mmc_card *card)
+{
+	unsigned int bus_speed, timing;
+	int err;
+	unsigned char speed;
+
+	/*
+	 * If the host doesn't support any of the UHS-I modes, fallback on
+	 * default speed.
+	 */
+	if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
+	    MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)))
+		return 0;
+
+	bus_speed = SDIO_SPEED_SDR12;
+	timing = MMC_TIMING_UHS_SDR12;
+	if ((card->host->caps & MMC_CAP_UHS_SDR104) &&
+	    (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) {
+			bus_speed = SDIO_SPEED_SDR104;
+			timing = MMC_TIMING_UHS_SDR104;
+			card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR;
+	} else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&
+		   (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) {
+			bus_speed = SDIO_SPEED_DDR50;
+			timing = MMC_TIMING_UHS_DDR50;
+			card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR;
+	} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+		    MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode &
+		    SD_MODE_UHS_SDR50)) {
+			bus_speed = SDIO_SPEED_SDR50;
+			timing = MMC_TIMING_UHS_SDR50;
+			card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR;
+	} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+		    MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) &&
+		   (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) {
+			bus_speed = SDIO_SPEED_SDR25;
+			timing = MMC_TIMING_UHS_SDR25;
+			card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR;
+	} else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+		    MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 |
+		    MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode &
+		    SD_MODE_UHS_SDR12)) {
+			bus_speed = SDIO_SPEED_SDR12;
+			timing = MMC_TIMING_UHS_SDR12;
+			card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR;
+	}
+
+	err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed);
+	if (err)
+		return err;
+
+	speed &= ~SDIO_SPEED_BSS_MASK;
+	speed |= bus_speed;
+	err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL);
+	if (err)
+		return err;
+
+	if (bus_speed) {
+		mmc_set_timing(card->host, timing);
+		mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr);
+	}
+
+	return 0;
+}
+
+/*
+ * UHS-I specific initialization procedure
+ */
+static int mmc_sdio_init_uhs_card(struct mmc_card *card)
+{
+	int err;
+
+	if (!card->scr.sda_spec3)
+		return 0;
+
+	/*
+	 * Switch to wider bus (if supported).
+	 */
+	if (card->host->caps & MMC_CAP_4_BIT_DATA) {
+		err = sdio_enable_4bit_bus(card);
+		if (err > 0) {
+			mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
+			err = 0;
+		}
+	}
+
+	/* Set the driver strength for the card */
+	sdio_select_driver_type(card);
+
+	/* Set bus speed mode of the card */
+	err = sdio_set_bus_speed_mode(card);
+	if (err)
+		goto out;
+
+	/* Initialize and start re-tuning timer */
+	if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning)
+		err = card->host->ops->execute_tuning(card->host);
+
+out:
+
+	return err;
+}
+
 /*
  * Handle the detection and initialisation of a card.
  *
@@ -393,6 +629,30 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 	if (host->ops->init_card)
 		host->ops->init_card(host, card);
 
+	/*
+	 * If the host and card support UHS-I mode request the card
+	 * to switch to 1.8V signaling level.  No 1.8v signalling if
+	 * UHS mode is not enabled to maintain compatibilty and some
+	 * systems that claim 1.8v signalling in fact do not support
+	 * it.
+	 */
+	if ((ocr & R4_18V_PRESENT) &&
+		(host->caps &
+			(MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 |
+			 MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 |
+			 MMC_CAP_UHS_DDR50))) {
+		err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180,
+				true);
+		if (err) {
+			ocr &= ~R4_18V_PRESENT;
+			host->ocr &= ~R4_18V_PRESENT;
+		}
+		err = 0;
+	} else {
+		ocr &= ~R4_18V_PRESENT;
+		host->ocr &= ~R4_18V_PRESENT;
+	}
+
 	/*
 	 * For native busses:  set card RCA and quit open drain mode.
 	 */
@@ -492,29 +752,39 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
 	if (err)
 		goto remove;
 
-	/*
-	 * Switch to high-speed (if supported).
-	 */
-	err = sdio_enable_hs(card);
-	if (err > 0)
-		mmc_sd_go_highspeed(card);
-	else if (err)
-		goto remove;
+	/* Initialization sequence for UHS-I cards */
+	/* Only if card supports 1.8v and UHS signaling */
+	if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) {
+		err = mmc_sdio_init_uhs_card(card);
+		if (err)
+			goto remove;
 
-	/*
-	 * Change to the card's maximum speed.
-	 */
-	mmc_set_clock(host, mmc_sdio_get_max_clock(card));
+		/* Card is an ultra-high-speed card */
+		mmc_card_set_uhs(card);
+	} else {
+		/*
+		 * Switch to high-speed (if supported).
+		 */
+		err = sdio_enable_hs(card);
+		if (err > 0)
+			mmc_sd_go_highspeed(card);
+		else if (err)
+			goto remove;
 
-	/*
-	 * Switch to wider bus (if supported).
-	 */
-	err = sdio_enable_4bit_bus(card);
-	if (err > 0)
-		mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
-	else if (err)
-		goto remove;
+		/*
+		 * Change to the card's maximum speed.
+		 */
+		mmc_set_clock(host, mmc_sdio_get_max_clock(card));
 
+		/*
+		 * Switch to wider bus (if supported).
+		 */
+		err = sdio_enable_4bit_bus(card);
+		if (err > 0)
+			mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
+		else if (err)
+			goto remove;
+	}
 finish:
 	if (!oldcard)
 		host->card = card;
@@ -797,8 +1067,17 @@ int mmc_attach_sdio(struct mmc_host *host)
 	 * Detect and init the card.
 	 */
 	err = mmc_sdio_init_card(host, host->ocr, NULL, 0);
-	if (err)
-		goto err;
+	if (err) {
+		if (err == -EAGAIN) {
+			/*
+			 * Retry initialization with S18R set to 0.
+			 */
+			host->ocr &= ~R4_18V_PRESENT;
+			err = mmc_sdio_init_card(host, host->ocr, NULL, 0);
+		}
+		if (err)
+			goto err;
+	}
 	card = host->card;
 
 	/*
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 2c9be29684cf..534974c3ef0c 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -367,7 +367,8 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
 #define mmc_card_highspeed(c)	((c)->state & MMC_STATE_HIGHSPEED)
 #define mmc_card_blockaddr(c)	((c)->state & MMC_STATE_BLOCKADDR)
 #define mmc_card_ddr_mode(c)	((c)->state & MMC_STATE_HIGHSPEED_DDR)
-#define mmc_sd_card_uhs(c) ((c)->state & MMC_STATE_ULTRAHIGHSPEED)
+#define mmc_card_uhs(c)		((c)->state & MMC_STATE_ULTRAHIGHSPEED)
+#define mmc_sd_card_uhs(c)	((c)->state & MMC_STATE_ULTRAHIGHSPEED)
 #define mmc_card_ext_capacity(c) ((c)->state & MMC_CARD_SDXC)
 
 #define mmc_card_set_present(c)	((c)->state |= MMC_STATE_PRESENT)
@@ -375,6 +376,7 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data)
 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 #define mmc_card_set_ddr_mode(c) ((c)->state |= MMC_STATE_HIGHSPEED_DDR)
+#define mmc_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED)
 #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC)
 
diff --git a/include/linux/mmc/sdio.h b/include/linux/mmc/sdio.h
index e0b1123497b9..c9fe66c58f8f 100644
--- a/include/linux/mmc/sdio.h
+++ b/include/linux/mmc/sdio.h
@@ -38,6 +38,7 @@
  *      [8:0] Byte/block count
  */
 
+#define R4_18V_PRESENT (1<<24)
 #define R4_MEMORY_PRESENT (1 << 27)
 
 /*
@@ -85,6 +86,7 @@
 #define  SDIO_SD_REV_1_01	0	/* SD Physical Spec Version 1.01 */
 #define  SDIO_SD_REV_1_10	1	/* SD Physical Spec Version 1.10 */
 #define  SDIO_SD_REV_2_00	2	/* SD Physical Spec Version 2.00 */
+#define  SDIO_SD_REV_3_00	3	/* SD Physical Spev Version 3.00 */
 
 #define SDIO_CCCR_IOEx		0x02
 #define SDIO_CCCR_IORx		0x03
@@ -134,8 +136,31 @@
 #define SDIO_CCCR_SPEED		0x13
 
 #define  SDIO_SPEED_SHS		0x01	/* Supports High-Speed mode */
-#define  SDIO_SPEED_EHS		0x02	/* Enable High-Speed mode */
-
+#define  SDIO_SPEED_BSS_SHIFT	1
+#define  SDIO_SPEED_BSS_MASK	(7<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_SDR12	(0<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_SDR25	(1<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_SDR50	(2<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_SDR104	(3<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_DDR50	(4<<SDIO_SPEED_BSS_SHIFT)
+#define  SDIO_SPEED_EHS		SDIO_SPEED_SDR25	/* Enable High-Speed */
+
+#define SDIO_CCCR_UHS		0x14
+#define  SDIO_UHS_SDR50		0x01
+#define  SDIO_UHS_SDR104	0x02
+#define  SDIO_UHS_DDR50		0x04
+
+#define SDIO_CCCR_DRIVE_STRENGTH 0x15
+#define  SDIO_SDTx_MASK		0x07
+#define  SDIO_DRIVE_SDTA	(1<<0)
+#define  SDIO_DRIVE_SDTC	(1<<1)
+#define  SDIO_DRIVE_SDTD	(1<<2)
+#define  SDIO_DRIVE_DTSx_MASK	0x03
+#define  SDIO_DRIVE_DTSx_SHIFT	4
+#define  SDIO_DTSx_SET_TYPE_B	(0 << SDIO_DRIVE_DTSx_SHIFT)
+#define  SDIO_DTSx_SET_TYPE_A	(1 << SDIO_DRIVE_DTSx_SHIFT)
+#define  SDIO_DTSx_SET_TYPE_C	(2 << SDIO_DRIVE_DTSx_SHIFT)
+#define  SDIO_DTSx_SET_TYPE_D	(3 << SDIO_DRIVE_DTSx_SHIFT)
 /*
  * Function Basic Registers (FBR)
  */
-- 
cgit v1.2.2


From 5a09262744a0b84719b933ac66801de058776755 Mon Sep 17 00:00:00 2001
From: Per Forlin <per.forlin@stericsson.com>
Date: Mon, 14 Nov 2011 12:02:28 +0100
Subject: mmc: mmci: add capabilities2 for MMC_CAP2

Signed-off-by: Per Forlin <per.forlin@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/mmci.c   | 1 +
 include/linux/amba/mmci.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 50b5f9926f64..8eabf999a858 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1239,6 +1239,7 @@ static int __devinit mmci_probe(struct amba_device *dev,
 	if (host->vcc == NULL)
 		mmc->ocr_avail = plat->ocr_mask;
 	mmc->caps = plat->capabilities;
+	mmc->caps2 = plat->capabilities2;
 
 	/*
 	 * We can do SGIO
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h
index 21114810c7c0..0101e9c17fa1 100644
--- a/include/linux/amba/mmci.h
+++ b/include/linux/amba/mmci.h
@@ -30,6 +30,7 @@ struct dma_chan;
  * @cd_invert: true if the gpio_cd pin value is active low
  * @capabilities: the capabilities of the block as implemented in
  * this platform, signify anything MMC_CAP_* from mmc/host.h
+ * @capabilities2: more capabilities, MMC_CAP2_* from mmc/host.h
  * @dma_filter: function used to select an appropriate RX and TX
  * DMA channel to be used for DMA, if and only if you're deploying the
  * generic DMA engine
@@ -52,6 +53,7 @@ struct mmci_platform_data {
 	int	gpio_cd;
 	bool	cd_invert;
 	unsigned long capabilities;
+	unsigned long capabilities2;
 	bool (*dma_filter)(struct dma_chan *chan, void *filter_param);
 	void *dma_rx_param;
 	void *dma_tx_param;
-- 
cgit v1.2.2


From 739c69c964fb4c040df451ef2e4cd6ea4f8b8e2d Mon Sep 17 00:00:00 2001
From: Per Forlin <per.forlin@stericsson.com>
Date: Mon, 14 Nov 2011 12:04:24 +0100
Subject: mmc: mmc_test: align max_seg_size

If max_seg_size is unaligned, mmc_test_map_sg() may create sg element
sizes that are not aligned with 512 byte. Fix, align max_seg_size at
mmc_test_area_init().

Signed-off-by: Per Forlin <per.forlin@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/card/mmc_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index b038c4a9468b..584899889e8f 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -1581,6 +1581,7 @@ static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill)
 
 	t->max_segs = test->card->host->max_segs;
 	t->max_seg_sz = test->card->host->max_seg_size;
+	t->max_seg_sz -= t->max_seg_sz % 512;
 
 	t->max_tfr = t->max_sz;
 	if (t->max_tfr >> 9 > test->card->host->max_blk_count)
-- 
cgit v1.2.2


From 4ee5ebaf74ba1b3e2e3f9aad442bf38db96c20d2 Mon Sep 17 00:00:00 2001
From: Tony Lin <tony.lin@freescale.com>
Date: Tue, 22 Nov 2011 14:42:30 +0800
Subject: mmc: sdhci-esdhc: Change delay after setting clock from 100ms to 1ms

1ms is enough for hardware to change the clock to stable.
100ms is too long in the tasklet.

Signed-off-by: Tony Lin <tony.lin@freescale.com>
CC: Xiaobo Xie <X.Xie@freescale.com>
CC: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/sdhci-esdhc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index c3b08f111942..b97b2f5dafdb 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -73,7 +73,7 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
 		| (div << ESDHC_DIVIDER_SHIFT)
 		| (pre_div << ESDHC_PREDIV_SHIFT));
 	sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
-	mdelay(100);
+	mdelay(1);
 out:
 	host->clock = clock;
 }
-- 
cgit v1.2.2


From 4d6144de8ba263eb3691a737c547e5b2fdc45287 Mon Sep 17 00:00:00 2001
From: Johan Rudholm <johan.rudholm@stericsson.com>
Date: Wed, 23 Nov 2011 09:05:58 +0100
Subject: mmc: core: check for zero length ioctl data

If the read or write buffer size associated with the command sent
through the mmc_blk_ioctl is zero, do not prepare data buffer.

This enables a ioctl(2) call to for instance send a MMC_SWITCH to set
a byte in the ext_csd.

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/card/block.c | 82 ++++++++++++++++++++++++++----------------------
 1 file changed, 45 insertions(+), 37 deletions(-)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c80bb6de40b8..ad0fb8d74dda 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -266,6 +266,9 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
 		goto idata_err;
 	}
 
+	if (!idata->buf_bytes)
+		return idata;
+
 	idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL);
 	if (!idata->buf) {
 		err = -ENOMEM;
@@ -312,25 +315,6 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	if (IS_ERR(idata))
 		return PTR_ERR(idata);
 
-	cmd.opcode = idata->ic.opcode;
-	cmd.arg = idata->ic.arg;
-	cmd.flags = idata->ic.flags;
-
-	data.sg = &sg;
-	data.sg_len = 1;
-	data.blksz = idata->ic.blksz;
-	data.blocks = idata->ic.blocks;
-
-	sg_init_one(data.sg, idata->buf, idata->buf_bytes);
-
-	if (idata->ic.write_flag)
-		data.flags = MMC_DATA_WRITE;
-	else
-		data.flags = MMC_DATA_READ;
-
-	mrq.cmd = &cmd;
-	mrq.data = &data;
-
 	md = mmc_blk_get(bdev->bd_disk);
 	if (!md) {
 		err = -EINVAL;
@@ -343,6 +327,48 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 		goto cmd_done;
 	}
 
+	cmd.opcode = idata->ic.opcode;
+	cmd.arg = idata->ic.arg;
+	cmd.flags = idata->ic.flags;
+
+	if (idata->buf_bytes) {
+		data.sg = &sg;
+		data.sg_len = 1;
+		data.blksz = idata->ic.blksz;
+		data.blocks = idata->ic.blocks;
+
+		sg_init_one(data.sg, idata->buf, idata->buf_bytes);
+
+		if (idata->ic.write_flag)
+			data.flags = MMC_DATA_WRITE;
+		else
+			data.flags = MMC_DATA_READ;
+
+		/* data.flags must already be set before doing this. */
+		mmc_set_data_timeout(&data, card);
+
+		/* Allow overriding the timeout_ns for empirical tuning. */
+		if (idata->ic.data_timeout_ns)
+			data.timeout_ns = idata->ic.data_timeout_ns;
+
+		if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
+			/*
+			 * Pretend this is a data transfer and rely on the
+			 * host driver to compute timeout.  When all host
+			 * drivers support cmd.cmd_timeout for R1B, this
+			 * can be changed to:
+			 *
+			 *     mrq.data = NULL;
+			 *     cmd.cmd_timeout = idata->ic.cmd_timeout_ms;
+			 */
+			data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000;
+		}
+
+		mrq.data = &data;
+	}
+
+	mrq.cmd = &cmd;
+
 	mmc_claim_host(card->host);
 
 	if (idata->ic.is_acmd) {
@@ -351,24 +377,6 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 			goto cmd_rel_host;
 	}
 
-	/* data.flags must already be set before doing this. */
-	mmc_set_data_timeout(&data, card);
-	/* Allow overriding the timeout_ns for empirical tuning. */
-	if (idata->ic.data_timeout_ns)
-		data.timeout_ns = idata->ic.data_timeout_ns;
-
-	if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) {
-		/*
-		 * Pretend this is a data transfer and rely on the host driver
-		 * to compute timeout.  When all host drivers support
-		 * cmd.cmd_timeout for R1B, this can be changed to:
-		 *
-		 *     mrq.data = NULL;
-		 *     cmd.cmd_timeout = idata->ic.cmd_timeout_ms;
-		 */
-		data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000;
-	}
-
 	mmc_wait_for_req(card->host, &mrq);
 
 	if (cmd.error) {
-- 
cgit v1.2.2


From 86df174585de79a460e3515ec413ea1f5a0bcf68 Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Wed, 23 Nov 2011 15:52:30 +0100
Subject: mmc: sh_mmcif: simplify clock divisor calculation

Replace ilog2(__rounddown_pow_of_two(x)) with the equivalent but much
simpler fls(x) - 1.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/sh_mmcif.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index d5505f3fe2a1..2ec23b0053b6 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -16,6 +16,7 @@
  *
  */
 
+#include <linux/bitops.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
@@ -399,7 +400,7 @@ static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
 		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK);
 	else
 		sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR &
-			(ilog2(__rounddown_pow_of_two(host->clk / clk)) << 16));
+				((fls(host->clk / clk) - 1) << 16));
 
 	sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE);
 }
-- 
cgit v1.2.2


From 6601056a96034fa08120b10b8dc728f213f91ec4 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Thu, 24 Nov 2011 16:29:17 +0100
Subject: mmc: Remove redundant spi driver bus initialization

In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register(),
so we can drop the manual assignment.

The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
	.driver = {
-		.bus = &spi_bus_type,
	},
};
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/mmc_spi.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 92946b84e9fa..273306c68d58 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1525,7 +1525,6 @@ static struct of_device_id mmc_spi_of_match_table[] __devinitdata = {
 static struct spi_driver mmc_spi_driver = {
 	.driver = {
 		.name =		"mmc_spi",
-		.bus =		&spi_bus_type,
 		.owner =	THIS_MODULE,
 		.of_match_table = mmc_spi_of_match_table,
 	},
-- 
cgit v1.2.2


From d1f81a64a4250bdd776978be06ae2b8e13ec7471 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@gmail.com>
Date: Sat, 26 Nov 2011 12:55:43 +0800
Subject: mmc: convert drivers/mmc/host/* to use module_platform_driver()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This patch converts the drivers in drivers/mmc/host/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Acked-by: David Brown <davidb@codeaurora.org>
Acked-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/bfin_sdh.c        | 12 +-----------
 drivers/mmc/host/cb710-mmc.c       | 13 +------------
 drivers/mmc/host/jz4740_mmc.c      | 12 +-----------
 drivers/mmc/host/msm_sdcc.c        | 13 +------------
 drivers/mmc/host/mxcmmc.c          | 13 +------------
 drivers/mmc/host/mxs-mmc.c         | 13 +------------
 drivers/mmc/host/pxamci.c          | 13 +------------
 drivers/mmc/host/s3cmci.c          | 13 +------------
 drivers/mmc/host/sdhci-cns3xxx.c   | 12 +-----------
 drivers/mmc/host/sdhci-dove.c      | 12 +-----------
 drivers/mmc/host/sdhci-esdhc-imx.c | 12 +-----------
 drivers/mmc/host/sdhci-of-esdhc.c  | 12 +-----------
 drivers/mmc/host/sdhci-of-hlwd.c   | 12 +-----------
 drivers/mmc/host/sdhci-pxav2.c     | 12 +-----------
 drivers/mmc/host/sdhci-pxav3.c     | 12 +-----------
 drivers/mmc/host/sdhci-s3c.c       | 13 +------------
 drivers/mmc/host/sdhci-spear.c     | 12 +-----------
 drivers/mmc/host/sdhci-tegra.c     | 12 +-----------
 drivers/mmc/host/sh_mmcif.c        | 14 +-------------
 drivers/mmc/host/sh_mobile_sdhi.c  | 13 +------------
 drivers/mmc/host/tmio_mmc.c        | 14 +-------------
 21 files changed, 21 insertions(+), 243 deletions(-)

diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 0371bf502249..03666174ca48 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -627,17 +627,7 @@ static struct platform_driver sdh_driver = {
 	},
 };
 
-static int __init sdh_init(void)
-{
-	return platform_driver_register(&sdh_driver);
-}
-module_init(sdh_init);
-
-static void __exit sdh_exit(void)
-{
-	platform_driver_unregister(&sdh_driver);
-}
-module_exit(sdh_exit);
+module_platform_driver(sdh_driver);
 
 MODULE_DESCRIPTION("Blackfin Secure Digital Host Driver");
 MODULE_AUTHOR("Cliff Cai, Roy Huang");
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index ce2a47b71dd6..83693fd7c6b3 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -780,18 +780,7 @@ static struct platform_driver cb710_mmc_driver = {
 #endif
 };
 
-static int __init cb710_mmc_init_module(void)
-{
-	return platform_driver_register(&cb710_mmc_driver);
-}
-
-static void __exit cb710_mmc_cleanup_module(void)
-{
-	platform_driver_unregister(&cb710_mmc_driver);
-}
-
-module_init(cb710_mmc_init_module);
-module_exit(cb710_mmc_cleanup_module);
+module_platform_driver(cb710_mmc_driver);
 
 MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>");
 MODULE_DESCRIPTION("ENE CB710 memory card reader driver - MMC/SD part");
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index 74218ad677e4..c8852a8128a9 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -1012,17 +1012,7 @@ static struct platform_driver jz4740_mmc_driver = {
 	},
 };
 
-static int __init jz4740_mmc_init(void)
-{
-	return platform_driver_register(&jz4740_mmc_driver);
-}
-module_init(jz4740_mmc_init);
-
-static void __exit jz4740_mmc_exit(void)
-{
-	platform_driver_unregister(&jz4740_mmc_driver);
-}
-module_exit(jz4740_mmc_exit);
+module_platform_driver(jz4740_mmc_driver);
 
 MODULE_DESCRIPTION("JZ4740 SD/MMC controller driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 80d8eb143b48..475596653c19 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1480,18 +1480,7 @@ static struct platform_driver msmsdcc_driver = {
 	},
 };
 
-static int __init msmsdcc_init(void)
-{
-	return platform_driver_register(&msmsdcc_driver);
-}
-
-static void __exit msmsdcc_exit(void)
-{
-	platform_driver_unregister(&msmsdcc_driver);
-}
-
-module_init(msmsdcc_init);
-module_exit(msmsdcc_exit);
+module_platform_driver(msmsdcc_driver);
 
 MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 8e0fbe994047..7088b40f9579 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -1047,18 +1047,7 @@ static struct platform_driver mxcmci_driver = {
 	}
 };
 
-static int __init mxcmci_init(void)
-{
-	return platform_driver_register(&mxcmci_driver);
-}
-
-static void __exit mxcmci_exit(void)
-{
-	platform_driver_unregister(&mxcmci_driver);
-}
-
-module_init(mxcmci_init);
-module_exit(mxcmci_exit);
+module_platform_driver(mxcmci_driver);
 
 MODULE_DESCRIPTION("i.MX Multimedia Card Interface Driver");
 MODULE_AUTHOR("Sascha Hauer, Pengutronix");
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index 99b449d26a4d..cf18fc2b24cd 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -855,18 +855,7 @@ static struct platform_driver mxs_mmc_driver = {
 	},
 };
 
-static int __init mxs_mmc_init(void)
-{
-	return platform_driver_register(&mxs_mmc_driver);
-}
-
-static void __exit mxs_mmc_exit(void)
-{
-	platform_driver_unregister(&mxs_mmc_driver);
-}
-
-module_init(mxs_mmc_init);
-module_exit(mxs_mmc_exit);
+module_platform_driver(mxs_mmc_driver);
 
 MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral");
 MODULE_AUTHOR("Freescale Semiconductor");
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index fc4356e00d46..cb2dc0e75ba7 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -872,18 +872,7 @@ static struct platform_driver pxamci_driver = {
 	},
 };
 
-static int __init pxamci_init(void)
-{
-	return platform_driver_register(&pxamci_driver);
-}
-
-static void __exit pxamci_exit(void)
-{
-	platform_driver_unregister(&pxamci_driver);
-}
-
-module_init(pxamci_init);
-module_exit(pxamci_exit);
+module_platform_driver(pxamci_driver);
 
 MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 720f99334a7f..1bcfd6dbb5cc 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1914,18 +1914,7 @@ static struct platform_driver s3cmci_driver = {
 	.shutdown	= s3cmci_shutdown,
 };
 
-static int __init s3cmci_init(void)
-{
-	return platform_driver_register(&s3cmci_driver);
-}
-
-static void __exit s3cmci_exit(void)
-{
-	platform_driver_unregister(&s3cmci_driver);
-}
-
-module_init(s3cmci_init);
-module_exit(s3cmci_exit);
+module_platform_driver(s3cmci_driver);
 
 MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index b4257e700617..28a870804f60 100644
--- a/drivers/mmc/host/sdhci-cns3xxx.c
+++ b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -115,17 +115,7 @@ static struct platform_driver sdhci_cns3xxx_driver = {
 	.remove		= __devexit_p(sdhci_cns3xxx_remove),
 };
 
-static int __init sdhci_cns3xxx_init(void)
-{
-	return platform_driver_register(&sdhci_cns3xxx_driver);
-}
-module_init(sdhci_cns3xxx_init);
-
-static void __exit sdhci_cns3xxx_exit(void)
-{
-	platform_driver_unregister(&sdhci_cns3xxx_driver);
-}
-module_exit(sdhci_cns3xxx_exit);
+module_platform_driver(sdhci_cns3xxx_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for CNS3xxx");
 MODULE_AUTHOR("Scott Shu, "
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index a81312c91f70..46fd1fd1b605 100644
--- a/drivers/mmc/host/sdhci-dove.c
+++ b/drivers/mmc/host/sdhci-dove.c
@@ -88,17 +88,7 @@ static struct platform_driver sdhci_dove_driver = {
 	.remove		= __devexit_p(sdhci_dove_remove),
 };
 
-static int __init sdhci_dove_init(void)
-{
-	return platform_driver_register(&sdhci_dove_driver);
-}
-module_init(sdhci_dove_init);
-
-static void __exit sdhci_dove_exit(void)
-{
-	platform_driver_unregister(&sdhci_dove_driver);
-}
-module_exit(sdhci_dove_exit);
+module_platform_driver(sdhci_dove_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Dove");
 MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, "
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 38ebc4ea259f..d601e41af282 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -606,17 +606,7 @@ static struct platform_driver sdhci_esdhc_imx_driver = {
 	.remove		= __devexit_p(sdhci_esdhc_imx_remove),
 };
 
-static int __init sdhci_esdhc_imx_init(void)
-{
-	return platform_driver_register(&sdhci_esdhc_imx_driver);
-}
-module_init(sdhci_esdhc_imx_init);
-
-static void __exit sdhci_esdhc_imx_exit(void)
-{
-	platform_driver_unregister(&sdhci_esdhc_imx_driver);
-}
-module_exit(sdhci_esdhc_imx_exit);
+module_platform_driver(sdhci_esdhc_imx_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC");
 MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 01e5f627e0f0..ff4adc018041 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -131,17 +131,7 @@ static struct platform_driver sdhci_esdhc_driver = {
 	.remove = __devexit_p(sdhci_esdhc_remove),
 };
 
-static int __init sdhci_esdhc_init(void)
-{
-	return platform_driver_register(&sdhci_esdhc_driver);
-}
-module_init(sdhci_esdhc_init);
-
-static void __exit sdhci_esdhc_exit(void)
-{
-	platform_driver_unregister(&sdhci_esdhc_driver);
-}
-module_exit(sdhci_esdhc_exit);
+module_platform_driver(sdhci_esdhc_driver);
 
 MODULE_DESCRIPTION("SDHCI OF driver for Freescale MPC eSDHC");
 MODULE_AUTHOR("Xiaobo Xie <X.Xie@freescale.com>, "
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 3619adc7d9fc..0ce088ae0228 100644
--- a/drivers/mmc/host/sdhci-of-hlwd.c
+++ b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -93,17 +93,7 @@ static struct platform_driver sdhci_hlwd_driver = {
 	.remove = __devexit_p(sdhci_hlwd_remove),
 };
 
-static int __init sdhci_hlwd_init(void)
-{
-	return platform_driver_register(&sdhci_hlwd_driver);
-}
-module_init(sdhci_hlwd_init);
-
-static void __exit sdhci_hlwd_exit(void)
-{
-	platform_driver_unregister(&sdhci_hlwd_driver);
-}
-module_exit(sdhci_hlwd_exit);
+module_platform_driver(sdhci_hlwd_driver);
 
 MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver");
 MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz");
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index 7a039c3cb1f1..dbb75bfbcffb 100644
--- a/drivers/mmc/host/sdhci-pxav2.c
+++ b/drivers/mmc/host/sdhci-pxav2.c
@@ -223,18 +223,8 @@ static struct platform_driver sdhci_pxav2_driver = {
 	.probe		= sdhci_pxav2_probe,
 	.remove		= __devexit_p(sdhci_pxav2_remove),
 };
-static int __init sdhci_pxav2_init(void)
-{
-	return platform_driver_register(&sdhci_pxav2_driver);
-}
-
-static void __exit sdhci_pxav2_exit(void)
-{
-	platform_driver_unregister(&sdhci_pxav2_driver);
-}
 
-module_init(sdhci_pxav2_init);
-module_exit(sdhci_pxav2_exit);
+module_platform_driver(sdhci_pxav2_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for pxav2");
 MODULE_AUTHOR("Marvell International Ltd.");
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 15673a7ee6a5..f29695683556 100644
--- a/drivers/mmc/host/sdhci-pxav3.c
+++ b/drivers/mmc/host/sdhci-pxav3.c
@@ -269,18 +269,8 @@ static struct platform_driver sdhci_pxav3_driver = {
 	.probe		= sdhci_pxav3_probe,
 	.remove		= __devexit_p(sdhci_pxav3_remove),
 };
-static int __init sdhci_pxav3_init(void)
-{
-	return platform_driver_register(&sdhci_pxav3_driver);
-}
-
-static void __exit sdhci_pxav3_exit(void)
-{
-	platform_driver_unregister(&sdhci_pxav3_driver);
-}
 
-module_init(sdhci_pxav3_init);
-module_exit(sdhci_pxav3_exit);
+module_platform_driver(sdhci_pxav3_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for pxav3");
 MODULE_AUTHOR("Marvell International Ltd.");
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 0d33ff0d67fb..55c1e870da83 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -657,18 +657,7 @@ static struct platform_driver sdhci_s3c_driver = {
 	},
 };
 
-static int __init sdhci_s3c_init(void)
-{
-	return platform_driver_register(&sdhci_s3c_driver);
-}
-
-static void __exit sdhci_s3c_exit(void)
-{
-	platform_driver_unregister(&sdhci_s3c_driver);
-}
-
-module_init(sdhci_s3c_init);
-module_exit(sdhci_s3c_exit);
+module_platform_driver(sdhci_s3c_driver);
 
 MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index dee70b66305a..883548eaa09e 100644
--- a/drivers/mmc/host/sdhci-spear.c
+++ b/drivers/mmc/host/sdhci-spear.c
@@ -320,17 +320,7 @@ static struct platform_driver sdhci_driver = {
 	.remove		= __devexit_p(sdhci_remove),
 };
 
-static int __init sdhci_init(void)
-{
-	return platform_driver_register(&sdhci_driver);
-}
-module_init(sdhci_init);
-
-static void __exit sdhci_exit(void)
-{
-	platform_driver_unregister(&sdhci_driver);
-}
-module_exit(sdhci_exit);
+module_platform_driver(sdhci_driver);
 
 MODULE_DESCRIPTION("SPEAr Secure Digital Host Controller Interface driver");
 MODULE_AUTHOR("Viresh Kumar <viresh.kumar@st.com>");
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index e2e18d3f949c..78a36eba4df0 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -324,17 +324,7 @@ static struct platform_driver sdhci_tegra_driver = {
 	.remove		= __devexit_p(sdhci_tegra_remove),
 };
 
-static int __init sdhci_tegra_init(void)
-{
-	return platform_driver_register(&sdhci_tegra_driver);
-}
-module_init(sdhci_tegra_init);
-
-static void __exit sdhci_tegra_exit(void)
-{
-	platform_driver_unregister(&sdhci_tegra_driver);
-}
-module_exit(sdhci_tegra_exit);
+module_platform_driver(sdhci_tegra_driver);
 
 MODULE_DESCRIPTION("SDHCI driver for Tegra");
 MODULE_AUTHOR(" Google, Inc.");
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 2ec23b0053b6..7bec007bcefa 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -1207,19 +1207,7 @@ static struct platform_driver sh_mmcif_driver = {
 	},
 };
 
-static int __init sh_mmcif_init(void)
-{
-	return platform_driver_register(&sh_mmcif_driver);
-}
-
-static void __exit sh_mmcif_exit(void)
-{
-	platform_driver_unregister(&sh_mmcif_driver);
-}
-
-module_init(sh_mmcif_init);
-module_exit(sh_mmcif_exit);
-
+module_platform_driver(sh_mmcif_driver);
 
 MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 41ae6466bd83..58da3c44acc5 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -282,18 +282,7 @@ static struct platform_driver sh_mobile_sdhi_driver = {
 	.remove		= __devexit_p(sh_mobile_sdhi_remove),
 };
 
-static int __init sh_mobile_sdhi_init(void)
-{
-	return platform_driver_register(&sh_mobile_sdhi_driver);
-}
-
-static void __exit sh_mobile_sdhi_exit(void)
-{
-	platform_driver_unregister(&sh_mobile_sdhi_driver);
-}
-
-module_init(sh_mobile_sdhi_init);
-module_exit(sh_mobile_sdhi_exit);
+module_platform_driver(sh_mobile_sdhi_driver);
 
 MODULE_DESCRIPTION("SuperH Mobile SDHI driver");
 MODULE_AUTHOR("Magnus Damm");
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index a4ea10242787..113ce6c9cf32 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -138,19 +138,7 @@ static struct platform_driver tmio_mmc_driver = {
 	.resume = tmio_mmc_resume,
 };
 
-
-static int __init tmio_mmc_init(void)
-{
-	return platform_driver_register(&tmio_mmc_driver);
-}
-
-static void __exit tmio_mmc_exit(void)
-{
-	platform_driver_unregister(&tmio_mmc_driver);
-}
-
-module_init(tmio_mmc_init);
-module_exit(tmio_mmc_exit);
+module_platform_driver(tmio_mmc_driver);
 
 MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
-- 
cgit v1.2.2


From 482fce997e143a8d5429406fe066d31aa76ef70a Mon Sep 17 00:00:00 2001
From: Cong Wang <amwang@redhat.com>
Date: Sun, 27 Nov 2011 13:27:00 +0800
Subject: mmc: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
---
 drivers/mmc/host/at91_mci.c |  8 ++++----
 drivers/mmc/host/msm_sdcc.c |  6 +++---
 drivers/mmc/host/sdhci.c    |  4 ++--
 drivers/mmc/host/tifm_sd.c  | 16 ++++++++--------
 drivers/mmc/host/tmio_mmc.h |  4 ++--
 5 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index a8b4d2aa18e5..9a32922265e5 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -236,7 +236,7 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data
 
 		sg = &data->sg[i];
 
-		sgbuffer = kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ)