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mmc: sdhci: fix vmmc handling 

Presently the vmmc regulator is enabled when the host
controller is added and disabled when it is removed.
However, the vmmc regulator should be under the control
of the upper layers via ->set_ios().  Make it so.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter 2011-12-27 15:48:41 +02:00 committed by Chris Ball
parent 17e9ff559a
commit ceb6143b2d
1 changed files with 21 additions and 22 deletions
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43
drivers/mmc/host/sdhci.c
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@ -1170,7 +1170,7 @@ out:
host->clock = clock;
}
static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
{
u8 pwr = 0;
@ -1193,13 +1193,13 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
}
if (host->pwr == pwr)
return;
return -1;
host->pwr = pwr;
if (pwr == 0) {
sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
return;
return 0;
}
/*
@ -1226,6 +1226,8 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
*/
if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
mdelay(10);
return power;
}
/*****************************************************************************\
@ -1307,12 +1309,17 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
{
unsigned long flags;
int vdd_bit = -1;
u8 ctrl;
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD)
goto out;
if (host->flags & SDHCI_DEVICE_DEAD) {
spin_unlock_irqrestore(&host->lock, flags);
if (host->vmmc && ios->power_mode == MMC_POWER_OFF)
mmc_regulator_set_ocr(host->mmc, host->vmmc, 0);
return;
}
/*
* Reset the chip on each power off.
@ -1326,9 +1333,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
sdhci_set_clock(host, ios->clock);
if (ios->power_mode == MMC_POWER_OFF)
sdhci_set_power(host, -1);
vdd_bit = sdhci_set_power(host, -1);
else
sdhci_set_power(host, ios->vdd);
vdd_bit = sdhci_set_power(host, ios->vdd);
if (host->vmmc && vdd_bit != -1) {
spin_unlock_irqrestore(&host->lock, flags);
mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit);
spin_lock_irqsave(&host->lock, flags);
}
if (host->ops->platform_send_init_74_clocks)
host->ops->platform_send_init_74_clocks(host, ios->power_mode);
@ -1453,7 +1466,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
out:
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
@ -2357,9 +2369,6 @@ int sdhci_suspend_host(struct sdhci_host *host)
free_irq(host->irq, host);
if (host->vmmc)
ret = regulator_disable(host->vmmc);
return ret;
}
@ -2369,12 +2378,6 @@ int sdhci_resume_host(struct sdhci_host *host)
{
int ret;
if (host->vmmc) {
int ret = regulator_enable(host->vmmc);
if (ret)
return ret;
}
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma)
host->ops->enable_dma(host);
@ -2936,8 +2939,6 @@ int sdhci_add_host(struct sdhci_host *host)
if (IS_ERR(host->vmmc)) {
pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc));
host->vmmc = NULL;
} else {
regulator_enable(host->vmmc);
}
sdhci_init(host, 0);
@ -3026,10 +3027,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
if (host->vmmc) {
regulator_disable(host->vmmc);
if (host->vmmc)
regulator_put(host->vmmc);
}
kfree(host->adma_desc);
kfree(host->align_buffer);