[PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[Venkatraman S]

Chris,
   Here are a group of fixes posted by Felipe and Balaji for the
OMAP hsmmc driver in the past few days. 
   I've rebased them to the lastest mmc-next and posted them
here again. These have also been tested on OMAP4 development platform.

Please feel to apply directly or pull if that's convenient.

The following changes since commit 5f0390f10c0e9c9c504cdbf4af802252628a2490:

  mmc: omap_hsmmc: Avoid a regulator voltage change with dt (2012-03-14 11:33:20 -0400)

are available in the git repository at:

  git://github.com/svenkatr/linux.git omap-mmc-pending-for-3.4

for you to fetch changes up to a6caaa13374ab72e37f9cb2e4cebfe3d266fbaf3:

  mmc: omap4: hsmmc: fix module re-insertion (2012-03-15 19:45:49 +0530)

----------------------------------------------------------------
Balaji T K (5):
      mmc: omap: Enable Auto CMD12
      mmc: omap: add DDR support to omap_hsmmc
      mmc: omap: use runtime put sync in probe error patch
      mmc: omap: context save after enabling runtime pm
      mmc: omap4: hsmmc: fix module re-insertion

Felipe Balbi (3):
      mmc: host: omap_hsmmc: trivial cleanups
      mmc: host: omap_hsmmc: make it behave well as a module
      mmc: host: omap_hsmmc: convert to module_platform_driver

 drivers/mmc/host/omap_hsmmc.c |  203 ++++++++++++++++++++++-----------------------
 1 file changed, 98 insertions(+), 105 deletions(-)

[PATCH RESEND 1/8] mmc: omap: Enable Auto CMD12

[Venkatraman S]

From: Balaji T K <balajitk@ti.com>

Enable Auto-CMD12 for multi block read/write on HSMMC
Tested on OMAP4430, OMAP3430 and OMAP2430 SDP

Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |   17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f29e1a2..b1e9be7 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -85,6 +85,7 @@
 #define BRR_ENABLE		(1 << 5)
 #define DTO_ENABLE		(1 << 20)
 #define INIT_STREAM		(1 << 1)
+#define ACEN_ACMD12		(1 << 2)
 #define DP_SELECT		(1 << 21)
 #define DDIR			(1 << 4)
 #define DMA_EN			0x1
@@ -115,6 +116,7 @@
 #define OMAP_MMC_MAX_CLOCK	52000000
 #define DRIVER_NAME		"omap_hsmmc"
 
+#define AUTO_CMD12		(1 << 0)	/* Auto CMD12 support */
 /*
  * One controller can have multiple slots, like on some omap boards using
  * omap.c controller driver. Luckily this is not currently done on any known
@@ -175,6 +177,7 @@ struct omap_hsmmc_host {
 	int			reqs_blocked;
 	int			use_reg;
 	int			req_in_progress;
+	unsigned int		flags;
 	struct omap_hsmmc_next	next_data;
 
 	struct	omap_mmc_platform_data	*pdata;
@@ -766,6 +769,8 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,
 		cmdtype = 0x3;
 
 	cmdreg = (cmd->opcode << 24) | (resptype << 16) | (cmdtype << 22);
+	if ((host->flags & AUTO_CMD12) && mmc_op_multi(cmd->opcode))
+		cmdreg |= ACEN_ACMD12;
 
 	if (data) {
 		cmdreg |= DP_SELECT | MSBS | BCE;
@@ -837,11 +842,16 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data)
 	else
 		data->bytes_xfered = 0;
 
-	if (!data->stop) {
+	if (data->stop && ((!(host->flags & AUTO_CMD12)) || data->error))
+		omap_hsmmc_start_command(host, data->stop, NULL);
+	else {
+		if (data->stop)
+			data->stop->resp[0] = OMAP_HSMMC_READ(host->base,
+							RSP76);
 		omap_hsmmc_request_done(host, data->mrq);
-		return;
 	}
-	omap_hsmmc_start_command(host, data->stop, NULL);
+
+	return;
 }
 
 /*
@@ -1826,6 +1836,7 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	host->mapbase	= res->start;
 	host->base	= ioremap(host->mapbase, SZ_4K);
 	host->power_mode = MMC_POWER_OFF;
+	host->flags	= AUTO_CMD12;
 	host->next_data.cookie = 1;
 
 	platform_set_drvdata(pdev, host);
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 2/8] mmc: omap: add DDR support to omap_hsmmc

[Venkatraman S]

From: Balaji T K <balajitk@ti.com>

Add Dual data rate support for omap_hsmmc

Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b1e9be7..db8af43 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -92,6 +92,7 @@
 #define MSBS			(1 << 5)
 #define BCE			(1 << 1)
 #define FOUR_BIT		(1 << 1)
+#define DDR			(1 << 19)
 #define DW8			(1 << 5)
 #define CC			0x1
 #define TC			0x02
@@ -523,6 +524,10 @@ static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host *host)
 	u32 con;
 
 	con = OMAP_HSMMC_READ(host->base, CON);
+	if (ios->timing == MMC_TIMING_UHS_DDR50)
+		con |= DDR;	/* configure in DDR mode */
+	else
+		con &= ~DDR;
 	switch (ios->bus_width) {
 	case MMC_BUS_WIDTH_8:
 		OMAP_HSMMC_WRITE(host->base, CON, con | DW8);
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 3/8] mmc: omap: use runtime put sync in probe error patch

[Venkatraman S]

From: Balaji T K <balajitk@ti.com>

pm_runtime_put_sync instead of autosuspend pm runtime API
because iounmap(host->base) follows immediately.

Reported-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index db8af43..0f8d34b 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2014,8 +2014,7 @@ err_reg:
 err_irq_cd_init:
 	free_irq(host->irq, host);
 err_irq:
-	pm_runtime_mark_last_busy(host->dev);
-	pm_runtime_put_autosuspend(host->dev);
+	pm_runtime_put_sync(host->dev);
 	pm_runtime_disable(host->dev);
 	clk_put(host->fclk);
 	if (host->got_dbclk) {
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 4/8] mmc: omap: context save after enabling runtime pm

[Venkatraman S]

From: Balaji T K <balajitk@ti.com>

call context save api after enabling runtime pm
to make sure register access in context save api happens with clk enabled.

Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 0f8d34b..9fa2f39 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1871,8 +1871,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 		goto err1;
 	}
 
-	omap_hsmmc_context_save(host);
-
 	if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
 		dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
 		mmc->caps2 |= MMC_CAP2_NO_MULTI_READ;
@@ -1883,6 +1881,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY);
 	pm_runtime_use_autosuspend(host->dev);
 
+	omap_hsmmc_context_save(host);
+
 	if (cpu_is_omap2430()) {
 		host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
 		/*
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 5/8] mmc: host: omap_hsmmc: trivial cleanups

[Venkatraman S]

From: Felipe Balbi <balbi@ti.com>

a bunch of non-functional cleanups to the omap_hsmmc
driver.

It basically decreases indentation level, drop unneded
dereferences and drop unneded accesses to the platform_device
structure.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |  147 ++++++++++++++++++++---------------------
 1 file changed, 70 insertions(+), 77 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 9fa2f39..6b30782 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2037,30 +2037,28 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
 	struct resource *res;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
-		mmc_remove_host(host->mmc);
-		if (host->use_reg)
-			omap_hsmmc_reg_put(host);
-		if (host->pdata->cleanup)
-			host->pdata->cleanup(&pdev->dev);
-		free_irq(host->irq, host);
-		if (mmc_slot(host).card_detect_irq)
-			free_irq(mmc_slot(host).card_detect_irq, host);
-
-		pm_runtime_put_sync(host->dev);
-		pm_runtime_disable(host->dev);
-		clk_put(host->fclk);
-		if (host->got_dbclk) {
-			clk_disable(host->dbclk);
-			clk_put(host->dbclk);
-		}
+	pm_runtime_get_sync(host->dev);
+	mmc_remove_host(host->mmc);
+	if (host->use_reg)
+		omap_hsmmc_reg_put(host);
+	if (host->pdata->cleanup)
+		host->pdata->cleanup(&pdev->dev);
+	free_irq(host->irq, host);
+	if (mmc_slot(host).card_detect_irq)
+		free_irq(mmc_slot(host).card_detect_irq, host);
 
-		mmc_free_host(host->mmc);
-		iounmap(host->base);
-		omap_hsmmc_gpio_free(pdev->dev.platform_data);
+	pm_runtime_put_sync(host->dev);
+	pm_runtime_disable(host->dev);
+	clk_put(host->fclk);
+	if (host->got_dbclk) {
+		clk_disable(host->dbclk);
+		clk_put(host->dbclk);
 	}
 
+	mmc_free_host(host->mmc);
+	iounmap(host->base);
+	omap_hsmmc_gpio_free(pdev->dev.platform_data);
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (res)
 		release_mem_region(res->start, resource_size(res));
@@ -2073,49 +2071,45 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
 static int omap_hsmmc_suspend(struct device *dev)
 {
 	int ret = 0;
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
+	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
 
-	if (host && host->suspended)
+	if (!host)
 		return 0;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
-		host->suspended = 1;
-		if (host->pdata->suspend) {
-			ret = host->pdata->suspend(&pdev->dev,
-							host->slot_id);
-			if (ret) {
-				dev_dbg(mmc_dev(host->mmc),
-					"Unable to handle MMC board"
-					" level suspend\n");
-				host->suspended = 0;
-				return ret;
-			}
-		}
-		ret = mmc_suspend_host(host->mmc);
+	if (host && host->suspended)
+		return 0;
 
+	pm_runtime_get_sync(host->dev);
+	host->suspended = 1;
+	if (host->pdata->suspend) {
+		ret = host->pdata->suspend(dev, host->slot_id);
 		if (ret) {
+			dev_dbg(dev, "Unable to handle MMC board"
+					" level suspend\n");
 			host->suspended = 0;
-			if (host->pdata->resume) {
-				ret = host->pdata->resume(&pdev->dev,
-							  host->slot_id);
-				if (ret)
-					dev_dbg(mmc_dev(host->mmc),
-						"Unmask interrupt failed\n");
-			}
-			goto err;
+			return ret;
 		}
+	}
+	ret = mmc_suspend_host(host->mmc);
 
-		if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) {
-			omap_hsmmc_disable_irq(host);
-			OMAP_HSMMC_WRITE(host->base, HCTL,
-				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
+	if (ret) {
+		host->suspended = 0;
+		if (host->pdata->resume) {
+			ret = host->pdata->resume(dev, host->slot_id);
+			if (ret)
+				dev_dbg(dev, "Unmask interrupt failed\n");
 		}
-		if (host->got_dbclk)
-			clk_disable(host->dbclk);
+		goto err;
+	}
 
+	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) {
+		omap_hsmmc_disable_irq(host);
+		OMAP_HSMMC_WRITE(host->base, HCTL,
+				OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
 	}
+
+	if (host->got_dbclk)
+		clk_disable(host->dbclk);
 err:
 	pm_runtime_put_sync(host->dev);
 	return ret;
@@ -2125,38 +2119,37 @@ err:
 static int omap_hsmmc_resume(struct device *dev)
 {
 	int ret = 0;
-	struct platform_device *pdev = to_platform_device(dev);
-	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
+	struct omap_hsmmc_host *host = dev_get_drvdata(dev);
+
+	if (!host)
+		return 0;
 
 	if (host && !host->suspended)
 		return 0;
 
-	if (host) {
-		pm_runtime_get_sync(host->dev);
+	pm_runtime_get_sync(host->dev);
 
-		if (host->got_dbclk)
-			clk_enable(host->dbclk);
+	if (host->got_dbclk)
+		clk_enable(host->dbclk);
 
-		if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
-			omap_hsmmc_conf_bus_power(host);
+	if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER))
+		omap_hsmmc_conf_bus_power(host);
 
-		if (host->pdata->resume) {
-			ret = host->pdata->resume(&pdev->dev, host->slot_id);
-			if (ret)
-				dev_dbg(mmc_dev(host->mmc),
-					"Unmask interrupt failed\n");
-		}
+	if (host->pdata->resume) {
+		ret = host->pdata->resume(dev, host->slot_id);
+		if (ret)
+			dev_dbg(dev, "Unmask interrupt failed\n");
+	}
 
-		omap_hsmmc_protect_card(host);
+	omap_hsmmc_protect_card(host);
 
-		/* Notify the core to resume the host */
-		ret = mmc_resume_host(host->mmc);
-		if (ret == 0)
-			host->suspended = 0;
+	/* Notify the core to resume the host */
+	ret = mmc_resume_host(host->mmc);
+	if (ret == 0)
+		host->suspended = 0;
 
-		pm_runtime_mark_last_busy(host->dev);
-		pm_runtime_put_autosuspend(host->dev);
-	}
+	pm_runtime_mark_last_busy(host->dev);
+	pm_runtime_put_autosuspend(host->dev);
 
 	return ret;
 
@@ -2173,7 +2166,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev)
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_save(host);
-	dev_dbg(mmc_dev(host->mmc), "disabled\n");
+	dev_dbg(dev, "disabled\n");
 
 	return 0;
 }
@@ -2184,7 +2177,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
 
 	host = platform_get_drvdata(to_platform_device(dev));
 	omap_hsmmc_context_restore(host);
-	dev_dbg(mmc_dev(host->mmc), "enabled\n");
+	dev_dbg(dev, "enabled\n");
 
 	return 0;
 }
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 6/8] mmc: host: omap_hsmmc: make it behave well as a module

[Venkatraman S]

From: Felipe Balbi <balbi@ti.com>

if we put probe() on __init section, that will never
work for multiple module insertions/removals.

In order to make it work properly, move probe to
__devinit section and use platform_driver_register()
instead of platform_driver_probe().

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 6b30782..67cb63e 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1780,7 +1780,7 @@ static inline struct omap_mmc_platform_data
 }
 #endif
 
-static int __init omap_hsmmc_probe(struct platform_device *pdev)
+static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 {
 	struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
 	struct mmc_host *mmc;
@@ -2032,7 +2032,7 @@ err:
 	return ret;
 }
 
-static int omap_hsmmc_remove(struct platform_device *pdev)
+static int __devexit omap_hsmmc_remove(struct platform_device *pdev)
 {
 	struct omap_hsmmc_host *host = platform_get_drvdata(pdev);
 	struct resource *res;
@@ -2190,7 +2190,8 @@ static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
 };
 
 static struct platform_driver omap_hsmmc_driver = {
-	.remove		= omap_hsmmc_remove,
+	.probe		= omap_hsmmc_probe,
+	.remove		= __devexit_p(omap_hsmmc_remove),
 	.driver		= {
 		.name = DRIVER_NAME,
 		.owner = THIS_MODULE,
@@ -2202,7 +2203,7 @@ static struct platform_driver omap_hsmmc_driver = {
 static int __init omap_hsmmc_init(void)
 {
 	/* Register the MMC driver */
-	return platform_driver_probe(&omap_hsmmc_driver, omap_hsmmc_probe);
+	return platform_driver_register(&omap_hsmmc_driver);
 }
 
 static void __exit omap_hsmmc_cleanup(void)
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 7/8] mmc: host: omap_hsmmc: convert to module_platform_driver

[Venkatraman S]

From: Felipe Balbi <balbi@ti.com>

this will delete some boilerplate code, no functional
changes.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |   16 +---------------
 1 file changed, 1 insertion(+), 15 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 67cb63e..4476b26 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -2200,21 +2200,7 @@ static struct platform_driver omap_hsmmc_driver = {
 	},
 };
 
-static int __init omap_hsmmc_init(void)
-{
-	/* Register the MMC driver */
-	return platform_driver_register(&omap_hsmmc_driver);
-}
-
-static void __exit omap_hsmmc_cleanup(void)
-{
-	/* Unregister MMC driver */
-	platform_driver_unregister(&omap_hsmmc_driver);
-}
-
-module_init(omap_hsmmc_init);
-module_exit(omap_hsmmc_cleanup);
-
+module_platform_driver(omap_hsmmc_driver);
 MODULE_DESCRIPTION("OMAP High Speed Multimedia Card driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:" DRIVER_NAME);
-- 
1.7.10.rc0.41.gfa678

[PATCH RESEND 8/8] mmc: omap4: hsmmc: fix module re-insertion

[Venkatraman S]

From: Balaji T K <balajitk@ti.com>

OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
Addng the offset to platform_device resource structure
increments the start address for every insmod operation.
MMC command fails on re-insertion as module due to incorrect register base.
Fix this by updating the ioremap base address only.

Signed-off-by: Balaji T K <balajitk@ti.com>
---
 drivers/mmc/host/omap_hsmmc.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 4476b26..f324cf4 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1813,8 +1813,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 	if (res == NULL || irq < 0)
 		return -ENXIO;
 
-	res->start += pdata->reg_offset;
-	res->end += pdata->reg_offset;
 	res = request_mem_region(res->start, resource_size(res), pdev->name);
 	if (res == NULL)
 		return -EBUSY;
@@ -1838,7 +1836,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
 	host->dma_ch	= -1;
 	host->irq	= irq;
 	host->slot_id	= 0;
-	host->mapbase	= res->start;
+	host->mapbase	= res->start + pdata->reg_offset;
 	host->base	= ioremap(host->mapbase, SZ_4K);
 	host->power_mode = MMC_POWER_OFF;
 	host->flags	= AUTO_CMD12;
-- 
1.7.10.rc0.41.gfa678

Re: [PATCH RESEND 1/8] mmc: omap: Enable Auto CMD12

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 997 bytes --]

Hi,

On Thu, Mar 15, 2012 at 08:03:35PM +0530, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
> @@ -766,6 +769,8 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd,
>  		cmdtype = 0x3;
>  
>  	cmdreg = (cmd->opcode << 24) | (resptype << 16) | (cmdtype << 22);
> +	if ((host->flags & AUTO_CMD12) && mmc_op_multi(cmd->opcode))

This should have braces too.

> @@ -837,11 +842,16 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data)
>  	else
>  		data->bytes_xfered = 0;
>  
> -	if (!data->stop) {
> +	if (data->stop && ((!(host->flags & AUTO_CMD12)) || data->error))
> +		omap_hsmmc_start_command(host, data->stop, NULL);
> +	else {
> +		if (data->stop)
> +			data->stop->resp[0] = OMAP_HSMMC_READ(host->base,
> +							RSP76);
>  		omap_hsmmc_request_done(host, data->mrq);
> -		return;
>  	}
> -	omap_hsmmc_start_command(host, data->stop, NULL);
> +
> +	return;

return is unnecessary.

-- 
balbi

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Re: [PATCH RESEND 1/8] mmc: omap: Enable Auto CMD12

[Felipe Balbi]

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On Thu, Mar 15, 2012 at 08:03:35PM +0530, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
> 
> Enable Auto-CMD12 for multi block read/write on HSMMC
> Tested on OMAP4430, OMAP3430 and OMAP2430 SDP
> 
> Signed-off-by: Balaji T K <balajitk@ti.com>

BTW, since patches are flowing through you now, they should have your
SoB line.

-- 
balbi

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Re: [PATCH RESEND 3/8] mmc: omap: use runtime put sync in probe error patch

[Felipe Balbi]

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On Thu, Mar 15, 2012 at 08:03:37PM +0530, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
> 
> pm_runtime_put_sync instead of autosuspend pm runtime API
> because iounmap(host->base) follows immediately.
> 
> Reported-by: Rajendra Nayak <rnayak@ti.com>
> Signed-off-by: Balaji T K <balajitk@ti.com>

should this one go to stable too ?

-- 
balbi

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Re: [PATCH RESEND 4/8] mmc: omap: context save after enabling runtime pm

[Felipe Balbi]

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On Thu, Mar 15, 2012 at 08:03:38PM +0530, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
> 
> call context save api after enabling runtime pm
> to make sure register access in context save api happens with clk enabled.
> 
> Signed-off-by: Balaji T K <balajitk@ti.com>

Cc stable ?

-- 
balbi

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Re: [PATCH RESEND 8/8] mmc: omap4: hsmmc: fix module re-insertion

[Felipe Balbi]

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Hi,

On Thu, Mar 15, 2012 at 08:03:42PM +0530, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
> 
> OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
> Addng the offset to platform_device resource structure
> increments the start address for every insmod operation.
> MMC command fails on re-insertion as module due to incorrect register base.
> Fix this by updating the ioremap base address only.
> 
> Signed-off-by: Balaji T K <balajitk@ti.com>
> ---
>  drivers/mmc/host/omap_hsmmc.c |    4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index 4476b26..f324cf4 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -1813,8 +1813,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
>  	if (res == NULL || irq < 0)
>  		return -ENXIO;
>  
> -	res->start += pdata->reg_offset;
> -	res->end += pdata->reg_offset;
>  	res = request_mem_region(res->start, resource_size(res), pdev->name);
>  	if (res == NULL)
>  		return -EBUSY;
> @@ -1838,7 +1836,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
>  	host->dma_ch	= -1;
>  	host->irq	= irq;
>  	host->slot_id	= 0;
> -	host->mapbase	= res->start;
> +	host->mapbase	= res->start + pdata->reg_offset;

could this be done with a revision check at some point so we drop the
pdata requirement ? Not part of $SUBJECT though, because you're just
moving the increment.

-- 
balbi

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Re: [PATCH RESEND 4/8] mmc: omap: context save after enabling runtime pm

[Shubhrajyoti]

On Thursday 15 March 2012 08:03 PM, Venkatraman S wrote:
> From: Balaji T K <balajitk@ti.com>
>
> call context save api after enabling runtime pm
> to make sure register access in context save api
If I am not mistaken  the api  would
store the number of power state changes and accesses no registers.

Am I missing something?

>  happens with clk enabled.
>
> Signed-off-by: Balaji T K <balajitk@ti.com>
> ---
>  drivers/mmc/host/omap_hsmmc.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> index 0f8d34b..9fa2f39 100644
> --- a/drivers/mmc/host/omap_hsmmc.c
> +++ b/drivers/mmc/host/omap_hsmmc.c
> @@ -1871,8 +1871,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
>  		goto err1;
>  	}
>  
> -	omap_hsmmc_context_save(host);
> -
>  	if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
>  		dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
>  		mmc->caps2 |= MMC_CAP2_NO_MULTI_READ;
> @@ -1883,6 +1881,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
>  	pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY);
>  	pm_runtime_use_autosuspend(host->dev);
>  
> +	omap_hsmmc_context_save(host);
> +
>  	if (cpu_is_omap2430()) {
>  		host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
>  		/*

Re: [PATCH RESEND 1/8] mmc: omap: Enable Auto CMD12

[S, Venkatraman]

On Thu, Mar 15, 2012 at 8:27 PM, Felipe Balbi <balbi@ti.com> wrote:
> On Thu, Mar 15, 2012 at 08:03:35PM +0530, Venkatraman S wrote:
>> From: Balaji T K <balajitk@ti.com>
>>
>> Enable Auto-CMD12 for multi block read/write on HSMMC
>> Tested on OMAP4430, OMAP3430 and OMAP2430 SDP
>>
>> Signed-off-by: Balaji T K <balajitk@ti.com>
>
> BTW, since patches are flowing through you now, they should have your
> SoB line.
>

Sure. I'll edit and send again.

Re: [PATCH RESEND 8/8] mmc: omap4: hsmmc: fix module re-insertion

[S, Venkatraman]

On Thu, Mar 15, 2012 at 8:34 PM, Felipe Balbi <balbi@ti.com> wrote:
> Hi,
>
> On Thu, Mar 15, 2012 at 08:03:42PM +0530, Venkatraman S wrote:
>> From: Balaji T K <balajitk@ti.com>
>>
>> OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
>> Addng the offset to platform_device resource structure
>> increments the start address for every insmod operation.
>> MMC command fails on re-insertion as module due to incorrect register base.
>> Fix this by updating the ioremap base address only.
>>
>> Signed-off-by: Balaji T K <balajitk@ti.com>
>> ---
>>  drivers/mmc/host/omap_hsmmc.c |    4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
>> index 4476b26..f324cf4 100644
>> --- a/drivers/mmc/host/omap_hsmmc.c
>> +++ b/drivers/mmc/host/omap_hsmmc.c
>> @@ -1813,8 +1813,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
>>       if (res == NULL || irq < 0)
>>               return -ENXIO;
>>
>> -     res->start += pdata->reg_offset;
>> -     res->end += pdata->reg_offset;
>>       res = request_mem_region(res->start, resource_size(res), pdev->name);
>>       if (res == NULL)
>>               return -EBUSY;
>> @@ -1838,7 +1836,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
>>       host->dma_ch    = -1;
>>       host->irq       = irq;
>>       host->slot_id   = 0;
>> -     host->mapbase   = res->start;
>> +     host->mapbase   = res->start + pdata->reg_offset;
>
> could this be done with a revision check at some point so we drop the
> pdata requirement ? Not part of $SUBJECT though, because you're just
> moving the increment.
>
That's a good idea. Will post that patch as part of another clean up series in
the pipeline.
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Re: [PATCH RESEND 8/8] mmc: omap4: hsmmc: fix module re-insertion

[Felipe Balbi]

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On Fri, Mar 16, 2012 at 04:02:16PM +0530, S, Venkatraman wrote:
> On Thu, Mar 15, 2012 at 8:34 PM, Felipe Balbi <balbi@ti.com> wrote:
> > Hi,
> >
> > On Thu, Mar 15, 2012 at 08:03:42PM +0530, Venkatraman S wrote:
> >> From: Balaji T K <balajitk@ti.com>
> >>
> >> OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
> >> Addng the offset to platform_device resource structure
> >> increments the start address for every insmod operation.
> >> MMC command fails on re-insertion as module due to incorrect register base.
> >> Fix this by updating the ioremap base address only.
> >>
> >> Signed-off-by: Balaji T K <balajitk@ti.com>
> >> ---
> >>  drivers/mmc/host/omap_hsmmc.c |    4 +---
> >>  1 file changed, 1 insertion(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
> >> index 4476b26..f324cf4 100644
> >> --- a/drivers/mmc/host/omap_hsmmc.c
> >> +++ b/drivers/mmc/host/omap_hsmmc.c
> >> @@ -1813,8 +1813,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
> >>       if (res == NULL || irq < 0)
> >>               return -ENXIO;
> >>
> >> -     res->start += pdata->reg_offset;
> >> -     res->end += pdata->reg_offset;
> >>       res = request_mem_region(res->start, resource_size(res), pdev->name);
> >>       if (res == NULL)
> >>               return -EBUSY;
> >> @@ -1838,7 +1836,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
> >>       host->dma_ch    = -1;
> >>       host->irq       = irq;
> >>       host->slot_id   = 0;
> >> -     host->mapbase   = res->start;
> >> +     host->mapbase   = res->start + pdata->reg_offset;
> >
> > could this be done with a revision check at some point so we drop the
> > pdata requirement ? Not part of $SUBJECT though, because you're just
> > moving the increment.
> >
> That's a good idea. Will post that patch as part of another clean up series in
> the pipeline.

sounds good to me ;-)

-- 
balbi

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Re: [PATCH RESEND 4/8] mmc: omap: context save after enabling runtime pm

[T Krishnamoorthy, Balaji]

On Thu, Mar 15, 2012 at 8:42 PM, Shubhrajyoti <shubhrajyoti@ti.com> wrote:
> On Thursday 15 March 2012 08:03 PM, Venkatraman S wrote:
>> From: Balaji T K <balajitk@ti.com>
>>
>> call context save api after enabling runtime pm
>> to make sure register access in context save api
> If I am not mistaken  the api  would
> store the number of power state changes and accesses no registers.
>
> Am I missing something?

Yes, as of now no registers are accessed in context store. However
this patch is needed if registers are accessed in context save api.

>
>>  happens with clk enabled.
>>
>> Signed-off-by: Balaji T K <balajitk@ti.com>
>> ---
>>  drivers/mmc/host/omap_hsmmc.c |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
>> index 0f8d34b..9fa2f39 100644
>> --- a/drivers/mmc/host/omap_hsmmc.c
>> +++ b/drivers/mmc/host/omap_hsmmc.c
>> @@ -1871,8 +1871,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
>>               goto err1;
>>       }
>>
>> -     omap_hsmmc_context_save(host);
>> -
>>       if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
>>               dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n");
>>               mmc->caps2 |= MMC_CAP2_NO_MULTI_READ;
>> @@ -1883,6 +1881,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
>>       pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY);
>>       pm_runtime_use_autosuspend(host->dev);
>>
>> +     omap_hsmmc_context_save(host);
>> +
>>       if (cpu_is_omap2430()) {
>>               host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
>>               /*
>
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[PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[Venkatraman S]

Chris,
   Here are a group of fixes posted by Felipe and Balaji for the
OMAP hsmmc driver in the past few days. 
   I've rebased them to the lastest mmc-next and posted them
here again. These have also been tested on OMAP4 development platform.

Please feel to apply directly or pull if that's convenient.

Changes since yesterday (v1):-
	Fixed formatting issues as suggested by Felipe
	Marked some patches for stable.

The following changes since commit 5f0390f10c0e9c9c504cdbf4af802252628a2490:

  mmc: omap_hsmmc: Avoid a regulator voltage change with dt (2012-03-14 11:33:20 -0400)

are available in the git repository at:

  git://github.com/svenkatr/linux.git omap-mmc-pending-for-3.4

for you to fetch changes up to 8d54766b608915035b47616ea564e4e9b4dda29c:

  mmc: omap4: hsmmc: fix module re-insertion (2012-03-16 11:38:41 +0530)

----------------------------------------------------------------
Balaji T K (5):
      mmc: omap: Enable Auto CMD12
      mmc: omap: add DDR support to omap_hsmmc
      mmc: omap: use runtime put sync in probe error patch
      mmc: omap: context save after enabling runtime pm
      mmc: omap4: hsmmc: fix module re-insertion

Felipe Balbi (3):
      mmc: host: omap_hsmmc: trivial cleanups
      mmc: host: omap_hsmmc: make it behave well as a module
      mmc: host: omap_hsmmc: convert to module_platform_driver

 drivers/mmc/host/omap_hsmmc.c |  202 ++++++++++++++++++++++------------------------
 1 file changed, 97 insertions(+), 105 deletions(-)

Re: [PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[Chris Ball]

Hi,

On Fri, Mar 16 2012, Venkatraman S wrote:
> Chris,
>    Here are a group of fixes posted by Felipe and Balaji for the
> OMAP hsmmc driver in the past few days. 
>    I've rebased them to the lastest mmc-next and posted them
> here again. These have also been tested on OMAP4 development platform.
>
> Please feel to apply directly or pull if that's convenient.
>
> Changes since yesterday (v1):-
> 	Fixed formatting issues as suggested by Felipe
> 	Marked some patches for stable.
>
> The following changes since commit 5f0390f10c0e9c9c504cdbf4af802252628a2490:
>
>   mmc: omap_hsmmc: Avoid a regulator voltage change with dt (2012-03-14 11:33:20 -0400)
>
> are available in the git repository at:
>
>   git://github.com/svenkatr/linux.git omap-mmc-pending-for-3.4
>
> for you to fetch changes up to 8d54766b608915035b47616ea564e4e9b4dda29c:
>
>   mmc: omap4: hsmmc: fix module re-insertion (2012-03-16 11:38:41 +0530)

I've just rebased mmc-next on top of 3.4-rc1, and now there are many
conflicts against your tree -- please could you resend patches 3-8
against that base?  I'll take them for 3.4, and will take patches 1-2
for 3.5.

Thanks!

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child

Re: [PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[S, Venkatraman]

On Sun, Apr 1, 2012 at 10:10 AM, Chris Ball <cjb@laptop.org> wrote:
> Hi,
>
> On Fri, Mar 16 2012, Venkatraman S wrote:
>> Chris,
>>    Here are a group of fixes posted by Felipe and Balaji for the
>> OMAP hsmmc driver in the past few days.
>>    I've rebased them to the lastest mmc-next and posted them
>> here again. These have also been tested on OMAP4 development platform.
>>
>> Please feel to apply directly or pull if that's convenient.
>>
>> Changes since yesterday (v1):-
>>       Fixed formatting issues as suggested by Felipe
>>       Marked some patches for stable.
>>
>> The following changes since commit 5f0390f10c0e9c9c504cdbf4af802252628a2490:
>>
>>   mmc: omap_hsmmc: Avoid a regulator voltage change with dt (2012-03-14 11:33:20 -0400)
>>
>> are available in the git repository at:
>>
>>   git://github.com/svenkatr/linux.git omap-mmc-pending-for-3.4
>>
>> for you to fetch changes up to 8d54766b608915035b47616ea564e4e9b4dda29c:
>>
>>   mmc: omap4: hsmmc: fix module re-insertion (2012-03-16 11:38:41 +0530)
>
> I've just rebased mmc-next on top of 3.4-rc1, and now there are many
> conflicts against your tree -- please could you resend patches 3-8
> against that base?  I'll take them for 3.4, and will take patches 1-2
> for 3.5.
>
I've rebased patches 3-8 into a new branch (See below).
I'll send you 1-2 on top of 3.4-rc2 once it's out. Is it Ok ?
==============
The following changes since commit a4dfa827bb5b9a984d4000ffb80134b9495e4d8a:

  mmc: sdio: Use empty system suspend/resume callbacks at the bus
level (2012-04-01 00:35:06 -0400)

are available in the git repository at:

  git://github.com/svenkatr/linux.git omap-mmc-fixes-3.4

for you to fetch changes up to 80f833a2f77b8d6464209c0bb00a39ad835356a0:

  mmc: omap4: hsmmc: fix module re-insertion (2012-04-02 12:26:47 +0530)

----------------------------------------------------------------
Balaji T K (3):
      mmc: omap: use runtime put sync in probe error patch
      mmc: omap: context save after enabling runtime pm
      mmc: omap4: hsmmc: fix module re-insertion

Felipe Balbi (3):
      mmc: host: omap_hsmmc: trivial cleanups
      mmc: host: omap_hsmmc: make it behave well as a module
      mmc: host: omap_hsmmc: convert to module_platform_driver

 drivers/mmc/host/omap_hsmmc.c |  181
+++++++++++++++++++++--------------------------
 1 file changed, 79 insertions(+), 102 deletions(-)

Regards,
Venkat.

Re: [PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window

[Chris Ball]

Hi,

On Mon, Apr 02 2012, S, Venkatraman wrote:
> I've rebased patches 3-8 into a new branch (See below).
> I'll send you 1-2 on top of 3.4-rc2 once it's out. Is it Ok ?

Yes, thanks.

> > ==============
> The following changes since commit a4dfa827bb5b9a984d4000ffb80134b9495e4d8a:
>
>   mmc: sdio: Use empty system suspend/resume callbacks at the bus
> level (2012-04-01 00:35:06 -0400)
>
> are available in the git repository at:
>
>   git://github.com/svenkatr/linux.git omap-mmc-fixes-3.4
>
> for you to fetch changes up to 80f833a2f77b8d6464209c0bb00a39ad835356a0:
>
>   mmc: omap4: hsmmc: fix module re-insertion (2012-04-02 12:26:47 +0530)
>
> ----------------------------------------------------------------
> Balaji T K (3):
>       mmc: omap: use runtime put sync in probe error patch
>       mmc: omap: context save after enabling runtime pm
>       mmc: omap4: hsmmc: fix module re-insertion
>
> Felipe Balbi (3):
>       mmc: host: omap_hsmmc: trivial cleanups
>       mmc: host: omap_hsmmc: make it behave well as a module
>       mmc: host: omap_hsmmc: convert to module_platform_driver

Pushed to mmc-next for 3.4, and I normalized the commit message first
lines to:

        mmc: omap_hsmmc: description

Thanks very much,

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child