mmc: tegra: add pm_flags

Enable fast bcm4329 WIFI suspend/resume on Tegra2 board.

This patch allows the mach-tegra support to tell the tegra MMC host
controller to NOT turn off power for the MMC controller the WIFI part
lives behind.  Thus bcm4329 firmware doesn't need to be reloaded.

Signed-off-by: Venkat Rao <vrao@broadcom.com>
Tested-by: Grant Grundler <grundler@chromium.org>
Reviewed-by: Olof Johansson <olof@lixom.net>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/arch/arm/mach-tegra/include/mach/sdhci.h b/arch/arm/mach-tegra/include/mach/sdhci.h
index 3ad086e..4231bc7 100644 (file)
--- a/arch/arm/mach-tegra/include/mach/sdhci.h
+++ b/arch/arm/mach-tegra/include/mach/sdhci.h
@@ -24,6 +24,7 @@ struct tegra_sdhci_platform_data {
        int wp_gpio;
        int power_gpio;
        int is_8bit;
+       int pm_flags;
 };
 
 #endif

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index f7e1f96..343c97e 100644 (file)
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -184,6 +184,8 @@ static int tegra_sdhci_pltfm_init(struct sdhci_host *host,
        clk_enable(clk);
        pltfm_host->clk = clk;
 
+       host->mmc->pm_caps = plat->pm_flags;
+
        if (plat->is_8bit)
                host->mmc->caps |= MMC_CAP_8_BIT_DATA;