The purpose of the vdd_handler does not make sense. We remove it
and use a generic approach instead. A new ios_handler is added, the
purpose of which e.g. can be to control GPIO pins to a levelshifter.
Previously the vdd_handler was also used for making additional
changes to the power register bits. This option is superfluous and is
therefore removed.
Adaptaptions from the old vdd_handler to the new ios_handler is done for
mach-ux500 board, which was the only one using the vdd_handler.
This patch is based upon a patch from Sebastian Rasmussen.
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx>
Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@xxxxxxxxxxxxxx>
---
arch/arm/mach-ux500/board-mop500-sdi.c | 21 ++++++++-------------
drivers/mmc/host/mmci.c | 8 ++++----
include/linux/amba/mmci.h | 6 +++---
3 files changed, 15 insertions(+), 20 deletions(-)
diff --git a/arch/arm/mach-ux500/board-mop500-sdi.c b/arch/arm/mach-ux500/board-mop500-sdi.c
index 6826fae..3578c51 100644
--- a/arch/arm/mach-ux500/board-mop500-sdi.c
+++ b/arch/arm/mach-ux500/board-mop500-sdi.c
@@ -25,21 +25,13 @@
* SDI 0 (MicroSD slot)
*/
-/* MMCIPOWER bits */
-#define MCI_DATA2DIREN (1 << 2)
-#define MCI_CMDDIREN (1 << 3)
-#define MCI_DATA0DIREN (1 << 4)
-#define MCI_DATA31DIREN (1 << 5)
-#define MCI_FBCLKEN (1 << 7)
-
/* GPIO pins used by the sdi0 level shifter */
static int sdi0_en = -1;
static int sdi0_vsel = -1;
-static u32 mop500_sdi0_vdd_handler(struct device *dev, unsigned int vdd,
- unsigned char power_mode)
+static int mop500_sdi0_ios_handler(struct device *dev, struct mmc_ios *ios)
{
- switch (power_mode) {
+ switch (ios->power_mode) {
case MMC_POWER_UP:
case MMC_POWER_ON:
/*
@@ -59,8 +51,7 @@ static u32 mop500_sdi0_vdd_handler(struct device *dev, unsigned int vdd,
break;
}
- return MCI_FBCLKEN | MCI_CMDDIREN | MCI_DATA0DIREN |
- MCI_DATA2DIREN | MCI_DATA31DIREN;
+ return 0;
}
#ifdef CONFIG_STE_DMA40
@@ -84,13 +75,17 @@ static struct stedma40_chan_cfg mop500_sdi0_dma_cfg_tx = {
#endif
static struct mmci_platform_data mop500_sdi0_data = {
- .vdd_handler = mop500_sdi0_vdd_handler,
+ .ios_handler = mop500_sdi0_ios_handler,
.ocr_mask = MMC_VDD_29_30,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA |
MMC_CAP_SD_HIGHSPEED |
MMC_CAP_MMC_HIGHSPEED,
.gpio_wp = -1,
+ .sigdir = MCI_ST_FBCLKEN |
+ MCI_ST_CMDDIREN |
+ MCI_ST_DATA0DIREN |
+ MCI_ST_DATA2DIREN,
#ifdef CONFIG_STE_DMA40
.dma_filter = stedma40_filter,
.dma_rx_param = &mop500_sdi0_dma_cfg_rx,
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 55e460c..3c8ad6b 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1023,6 +1023,10 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
unsigned long flags;
int ret;
+ if (host->plat->ios_handler &&
+ host->plat->ios_handler(mmc_dev(mmc), ios))
+ dev_err(mmc_dev(mmc), "platform ios_handler failed\n");
+
switch (ios->power_mode) {
case MMC_POWER_OFF:
if (host->vcc)
@@ -1042,10 +1046,6 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
return;
}
}
- if (host->plat->vdd_handler)
- pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd,
- ios->power_mode);
-
/*
* The ST Micro variant doesn't have the PL180s MCI_PWR_UP
* and instead uses MCI_PWR_ON so apply whatever value is
diff --git a/include/linux/amba/mmci.h b/include/linux/amba/mmci.h
index 8ce34e8..84766fd 100644
--- a/include/linux/amba/mmci.h
+++ b/include/linux/amba/mmci.h
@@ -31,7 +31,8 @@ struct dma_chan;
* @ocr_mask: available voltages on the 4 pins from the block, this
* is ignored if a regulator is used, see the MMC_VDD_* masks in
* mmc/host.h
- * @vdd_handler: a callback function to translate a MMC_VDD_*
+ * @ios_handler: a callback function to act on specfic ios changes,
+ * used for example to control a levelshifter
* mask into a value to be binary (or set some other custom bits
* in MMCIPWR) or:ed and written into the MMCIPWR register of the
* block. May also control external power based on the power_mode.
@@ -60,8 +61,7 @@ struct dma_chan;
struct mmci_platform_data {
unsigned int f_max;
unsigned int ocr_mask;
- u32 (*vdd_handler)(struct device *, unsigned int vdd,
- unsigned char power_mode);
+ int (*ios_handler)(struct device *, struct mmc_ios *);
unsigned int (*status)(struct device *);
int gpio_wp;
int gpio_cd;
--
1.7.5.4
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