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authorAdrian Hunter <adrian.hunter@intel.com>2011-08-29 16:42:12 +0300
committerChris Ball <cjb@laptop.org>2011-10-26 16:32:06 -0400
commit20758b66dce76af0527363186f44b464d83e5666 (patch)
tree4502296e84da9dec326a8fcad054d7d956a67585
parentb2499518b5ad7e28bb3ed348fd3f370eeb1e36c0 (diff)
downloadlinux-20758b66dce76af0527363186f44b464d83e5666.tar.bz2
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>
-rw-r--r--drivers/mmc/host/sdhci.c9
-rw-r--r--drivers/mmc/host/sdhci.h2
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 0e02cc1df12e..d66a7a11a4fc 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1471,6 +1471,14 @@ static int sdhci_get_ro(struct mmc_host *mmc)
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)
{
struct sdhci_host *host;
@@ -1805,6 +1813,7 @@ static const struct mmc_host_ops sdhci_ops = {
.request = sdhci_request,
.set_ios = sdhci_set_ios,
.get_ro = sdhci_get_ro,
+ .hw_reset = sdhci_hw_reset,
.enable_sdio_irq = sdhci_enable_sdio_irq,
.start_signal_voltage_switch = sdhci_start_signal_voltage_switch,
.execute_tuning = sdhci_execute_tuning,
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 745c42fa41ed..7bd919c33cc2 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -273,7 +273,7 @@ struct sdhci_ops {
void (*platform_reset_enter)(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);
-
+ void (*hw_reset)(struct sdhci_host *host);
};
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS