On Wed, 18 May 2011 12:42:12 -0700 Mark Brown <broo...@opensource.wolfsonmicro.com> wrote:
> On Wed, May 18, 2011 at 07:23:20PM +0200, Antonio Ospite wrote:
>
[...]
> > 2. Add a proper function with all the needed parameters to abstract
> > the actual var names, this would be something like:
> > mmc_regulator_set_power(mmc, power_mode, vdd, vcc, pdata)
> > and yet checking for pdata->setpower can be tricky as 'setpower'
> > is an arbitrary name.
>
> This would be good.
A WIP patch, I don't have a lot of time to spend on this, I tried to
handle the driver specific 'setpower' callback with a macro, let me
know if you have a better idea:
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index bcb793e..dbbe535 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -298,6 +298,32 @@ static inline int mmc_regulator_set_ocr(struct mmc_host
*mmc,
}
#endif
+#define STRUCT_FIELD(s, f) ((s) && (s)->f ? (s)->f : NULL )
+
+static inline int mmc_regulator_set_power(struct mmc_host *mmc,
+ unsigned char power_mode,
+ struct regulator *supply,
+ unsigned short vdd_bit,
+ struct device *device,
+ void (*setpower_cb)(struct device *, unsigned
int))
+{
+ if (supply) {
+ int ret;
+
+ if (power_mode == MMC_POWER_OFF)
+ vdd_bit = 0;
+
+ ret = mmc_regulator_set_ocr(mmc, supply, vdd_bit);
+ if (ret)
+ return ret;
+ } else {
+ if (setpower_cb)
+ setpower_cb(device, vdd_bit);
+ }
+
+ return 0;
+}
+
int mmc_card_awake(struct mmc_host *host);
int mmc_card_sleep(struct mmc_host *host);
int mmc_card_can_sleep(struct mmc_host *host);
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 2e8db20..c9a229f 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1231,21 +1231,18 @@ static inline int mmc_spi_setpower(struct mmc_spi_host
*host,
unsigned char power_mode,
unsigned int vdd)
{
+ int ret;
+
if (!mmc_spi_canpower(host))
return -ENOSYS;
- if (host->vcc) {
- int ret;
- if (power_mode == MMC_POWER_OFF)
- vdd = 0;
+ ret = mmc_regulator_set_power(host->mmc, power_mode, host->vcc, vdd,
+ &host->spi->dev,
+ STRUCT_FIELD(host->pdata, setpower));
+ if (ret)
+ return ret;
- ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
- if (ret)
- return ret;
- } else {
- host->pdata->setpower(&host->spi->dev, vdd);
- }
if (power_mode == MMC_POWER_UP)
msleep(host->powerup_msecs);
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index fbdb21e..f5d9529 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -103,29 +103,20 @@ static inline int pxamci_set_power(struct pxamci_host
*host,
unsigned int vdd)
{
int on;
+ int ret;
- if (host->vcc) {
- int ret;
+ ret = mmc_regulator_set_power(host->mmc, power_mode, host->vcc, vdd,
+ mmc_dev(host->mmc),
+ STRUCT_FIELD(host->pdata, setpower));
+ if (ret)
+ return ret;
- if (power_mode == MMC_POWER_UP) {
- ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
- if (ret)
- return ret;
- } else if (power_mode == MMC_POWER_OFF) {
- ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0);
- if (ret)
- return ret;
- }
- }
if (!host->vcc && host->pdata &&
gpio_is_valid(host->pdata->gpio_power)) {
on = ((1 << vdd) & host->pdata->ocr_mask);
gpio_set_value(host->pdata->gpio_power,
!!on ^ host->pdata->gpio_power_invert);
}
- if (!host->vcc && host->pdata && host->pdata->setpower)
- host->pdata->setpower(mmc_dev(host->mmc), vdd);
-
return 0;
}
--
Antonio Ospite
http://ao2.it
PGP public key ID: 0x4553B001
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