diff options
| author | Bitan Biswas <bbiswas@nvidia.com> | 2012-01-02 13:05:11 +0530 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2012-01-04 11:45:35 +0530 |
| commit | 11d18187ac92974548268a8a92fee1272298600e (patch) | |
| tree | 8b8533c84e5410d0ed379698f0584d887f3b6f83 /drivers | |
| parent | 9b81082b053ee72f5b3185152c0157f8e85c99eb (diff) | |
mmc: tegra: io dpd support added
Enabled io dpd when clock is disabled for each SD instance.
Clock enable for the SD instance causes io dpd to be disabled.
bug 919993
Change-Id: I7d58517a7c51ce969a167abf7bb90ea89731d999
Signed-off-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-on: http://git-master/r/72027
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index c429cc754964..1cca7cfe9bc0 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -26,6 +26,7 @@ #include <mach/gpio.h> #include <mach/sdhci.h> +#include <mach/io_dpd.h> #include "sdhci-pltfm.h" @@ -91,6 +92,7 @@ struct tegra_sdhci_host { unsigned int vddio_max_uv; /* max clk supported by the platform */ unsigned int max_clk_limit; + struct tegra_io_dpd *dpd; }; static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg) @@ -423,6 +425,9 @@ static void tegra_sdhci_set_clock(struct sdhci_host *sdhci, unsigned int clock) mmc_hostname(sdhci->mmc), clock, tegra_host->clk_enabled); if (clock) { + /* bring out sd instance from io dpd mode */ + tegra_io_dpd_disable(tegra_host->dpd); + if (!tegra_host->clk_enabled) { clk_enable(pltfm_host->clk); ctrl = sdhci_readb(sdhci, SDHCI_VENDOR_CLOCK_CNTRL); @@ -441,6 +446,8 @@ static void tegra_sdhci_set_clock(struct sdhci_host *sdhci, unsigned int clock) sdhci_writeb(sdhci, ctrl, SDHCI_VENDOR_CLOCK_CNTRL); clk_disable(pltfm_host->clk); tegra_host->clk_enabled = false; + /* io dpd enable call for sd instance */ + tegra_io_dpd_enable(tegra_host->dpd); } } @@ -744,6 +751,7 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) tegra_host->clk_enabled = true; tegra_host->max_clk_limit = plat->max_clk_limit; tegra_host->instance = pdev->id; + tegra_host->dpd = tegra_io_dpd_get(mmc_dev(host->mmc)); host->mmc->pm_caps = plat->pm_flags; |