diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index e219c97a02a4..d9e8c2b7f4c5 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -151,15 +151,25 @@ static int mmc_bus_resume(struct device *dev) static int mmc_runtime_suspend(struct device *dev) { struct mmc_card *card = mmc_dev_to_card(dev); + struct mmc_host *host = card->host; + int ret = 0; - return mmc_power_save_host(card->host); + if (host->bus_ops->runtime_suspend) + ret = host->bus_ops->runtime_suspend(host); + + return ret; } static int mmc_runtime_resume(struct device *dev) { struct mmc_card *card = mmc_dev_to_card(dev); + struct mmc_host *host = card->host; + int ret = 0; - return mmc_power_restore_host(card->host); + if (host->bus_ops->runtime_resume) + ret = host->bus_ops->runtime_resume(host); + + return ret; } static int mmc_runtime_idle(struct device *dev) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index d856871ed6cb..dc0cb5929c64 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1478,7 +1478,7 @@ void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type) * If a host does all the power sequencing itself, ignore the * initial MMC_POWER_UP stage. */ -static void mmc_power_up(struct mmc_host *host) +void mmc_power_up(struct mmc_host *host) { int bit; diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index b9f18a2a8874..6242ffb789c4 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -22,6 +22,8 @@ struct mmc_bus_ops { void (*detect)(struct mmc_host *); int (*suspend)(struct mmc_host *); int (*resume)(struct mmc_host *); + int (*runtime_suspend)(struct mmc_host *); + int (*runtime_resume)(struct mmc_host *); int (*power_save)(struct mmc_host *); int (*power_restore)(struct mmc_host *); int (*alive)(struct mmc_host *); @@ -44,6 +46,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); int __mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage); void mmc_set_timing(struct mmc_host *host, unsigned int timing); void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type); +void mmc_power_up(struct mmc_host *host); void mmc_power_off(struct mmc_host *host); void mmc_power_cycle(struct mmc_host *host); diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 444668c210b2..1fbbd1bc55ec 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -1059,11 +1059,27 @@ out: return ret; } +static int mmc_sdio_runtime_suspend(struct mmc_host *host) +{ + /* No references to the card, cut the power to it. */ + mmc_power_off(host); + return 0; +} + +static int mmc_sdio_runtime_resume(struct mmc_host *host) +{ + /* Restore power and re-initialize. */ + mmc_power_up(host); + return mmc_sdio_power_restore(host); +} + static const struct mmc_bus_ops mmc_sdio_ops = { .remove = mmc_sdio_remove, .detect = mmc_sdio_detect, .suspend = mmc_sdio_suspend, .resume = mmc_sdio_resume, + .runtime_suspend = mmc_sdio_runtime_suspend, + .runtime_resume = mmc_sdio_runtime_resume, .power_restore = mmc_sdio_power_restore, .alive = mmc_sdio_alive, };