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mmc: sdhci: add eMMC hardware reset support 

Add an SDHCI operation for hardware reset and connect it to the
host controller operation.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter 2011-08-29 16:42:12 +03:00 committed by Chris Ball
parent b2499518b5
commit 20758b66dc
2 changed files with 10 additions and 1 deletions
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9
drivers/mmc/host/sdhci.c
View File

@ -1471,6 +1471,14 @@ static int sdhci_get_ro(struct mmc_host *mmc)
return 0; return 0;
} }
static void sdhci_hw_reset(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
if (host->ops && host->ops->hw_reset)
host->ops->hw_reset(host);
}
static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
{ {
struct sdhci_host *host; struct sdhci_host *host;
@ -1805,6 +1813,7 @@ static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request, .request = sdhci_request,
.set_ios = sdhci_set_ios, .set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro, .get_ro = sdhci_get_ro,
.hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq, .enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning, .execute_tuning = sdhci_execute_tuning,

2
drivers/mmc/host/sdhci.h
View File

@ -273,7 +273,7 @@ struct sdhci_ops {
void (*platform_reset_enter)(struct sdhci_host *host, u8 mask); void (*platform_reset_enter)(struct sdhci_host *host, u8 mask);
void (*platform_reset_exit)(struct sdhci_host *host, u8 mask); void (*platform_reset_exit)(struct sdhci_host *host, u8 mask);
int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
void (*hw_reset)(struct sdhci_host *host);
}; };
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS