Prepare for mmc3 regulator power control by splitting the power
control functions of mmc2 and mmc3, and expecting mmc3 to have
a single, dedicated, regulator support.
Signed-off-by: Ohad Ben-Cohen <o...@wizery.com>
---
arch/arm/mach-omap2/hsmmc.c | 10 ++++--
drivers/mmc/host/omap_hsmmc.c | 67 ++++++++++++++++++++++++++++++++++++----
2 files changed, 66 insertions(+), 11 deletions(-)
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c
index 1ef54b0..5d3d789 100644
--- a/arch/arm/mach-omap2/hsmmc.c
+++ b/arch/arm/mach-omap2/hsmmc.c
@@ -174,7 +174,7 @@ static void omap4_hsmmc1_after_set_reg(struct device *dev,
int slot,
}
}
-static void hsmmc23_before_set_reg(struct device *dev, int slot,
+static void hsmmc2_before_set_reg(struct device *dev, int slot,
int power_on, int vdd)
{
struct omap_mmc_platform_data *mmc = dev->platform_data;
@@ -325,14 +325,16 @@ void __init omap2_hsmmc_init(struct omap2_hsmmc_info
*controllers)
c->transceiver = 1;
if (c->transceiver && c->wires > 4)
c->wires = 4;
- /* FALLTHROUGH */
- case 3:
if (mmc->slots[0].features & HSMMC_HAS_PBIAS) {
/* off-chip level shifting, or none */
- mmc->slots[0].before_set_reg =
hsmmc23_before_set_reg;
+ mmc->slots[0].before_set_reg =
hsmmc2_before_set_reg;
mmc->slots[0].after_set_reg = NULL;
}
break;
+ case 3:
+ mmc->slots[0].before_set_reg = NULL;
+ mmc->slots[0].after_set_reg = NULL;
+ break;
default:
pr_err("MMC%d configuration not supported!\n", c->mmc);
kfree(mmc);
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d50e917..6f5cea0 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -258,7 +258,7 @@ static int omap_hsmmc_1_set_power(struct device *dev, int
slot, int power_on,
return ret;
}
-static int omap_hsmmc_23_set_power(struct device *dev, int slot, int power_on,
+static int omap_hsmmc_2_set_power(struct device *dev, int slot, int power_on,
int vdd)
{
struct omap_hsmmc_host *host =
@@ -309,6 +309,31 @@ static int omap_hsmmc_23_set_power(struct device *dev, int
slot, int power_on,
return ret;
}
+static int omap_hsmmc_3_set_power(struct device *dev, int slot, int power_on,
+ int vdd)
+{
+ struct omap_hsmmc_host *host =
+ platform_get_drvdata(to_platform_device(dev));
+ int ret = 0;
+
+ if (power_on) {
+ ret = mmc_regulator_set_ocr(host->vcc, vdd);
+ /* Enable interface voltage rail, if needed */
+ if (ret == 0 && host->vcc) {
+ ret = regulator_enable(host->vcc);
+ if (ret < 0)
+ ret = mmc_regulator_set_ocr(host->vcc, 0);
+ }
+ } else {
+ if (host->vcc)
+ ret = regulator_disable(host->vcc);
+ if (ret == 0)
+ ret = mmc_regulator_set_ocr(host->vcc, 0);
+ }
+
+ return ret;
+}
+
static int omap_hsmmc_1_set_sleep(struct device *dev, int slot, int sleep,
int vdd, int cardsleep)
{
@@ -319,7 +344,7 @@ static int omap_hsmmc_1_set_sleep(struct device *dev, int
slot, int sleep,
return regulator_set_mode(host->vcc, mode);
}
-static int omap_hsmmc_23_set_sleep(struct device *dev, int slot, int sleep,
+static int omap_hsmmc_2_set_sleep(struct device *dev, int slot, int sleep,
int vdd, int cardsleep)
{
struct omap_hsmmc_host *host =
@@ -358,6 +383,31 @@ static int omap_hsmmc_23_set_sleep(struct device *dev, int
slot, int sleep,
return regulator_enable(host->vcc_aux);
}
+static int omap_hsmmc_3_set_sleep(struct device *dev, int slot, int sleep,
+ int vdd, int cardsleep)
+{
+ struct omap_hsmmc_host *host =
+ platform_get_drvdata(to_platform_device(dev));
+ int err = 0;
+
+ /*
+ * If we don't see a Vcc regulator, assume it's a fixed
+ * voltage always-on regulator.
+ */
+ if (!host->vcc)
+ return 0;
+
+ if (cardsleep) {
+ /* VCC can be turned off if card is asleep */
+ if (sleep)
+ err = mmc_regulator_set_ocr(host->vcc, 0);
+ else
+ err = mmc_regulator_set_ocr(host->vcc, vdd);
+ }
+
+ return err;
+}
+
static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
{
struct regulator *reg;
@@ -370,10 +420,13 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host
*host)
mmc_slot(host).set_sleep = omap_hsmmc_1_set_sleep;
break;
case OMAP_MMC2_DEVID:
- case OMAP_MMC3_DEVID:
/* Off-chip level shifting, or none */
- mmc_slot(host).set_power = omap_hsmmc_23_set_power;
- mmc_slot(host).set_sleep = omap_hsmmc_23_set_sleep;
+ mmc_slot(host).set_power = omap_hsmmc_2_set_power;
+ mmc_slot(host).set_sleep = omap_hsmmc_2_set_sleep;
+ break;
+ case OMAP_MMC3_DEVID:
+ mmc_slot(host).set_power = omap_hsmmc_3_set_power;
+ mmc_slot(host).set_sleep = omap_hsmmc_3_set_sleep;
break;
default:
pr_err("MMC%d configuration not supported!\n", host->id);
@@ -386,9 +439,9 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
/*
* HACK: until fixed.c regulator is usable,
* we don't require a main regulator
- * for MMC2 or MMC3
+ * for MMC2
*/
- if (host->id == OMAP_MMC1_DEVID) {
+ if (host->id != OMAP_MMC2_DEVID) {
ret = PTR_ERR(reg);
goto err;
}
--
1.7.0.4
--
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