diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/bus.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index da3c01b214ec..af8dc6a2a317 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -14,6 +14,7 @@ #include <linux/device.h> #include <linux/err.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> @@ -141,6 +142,41 @@ static int mmc_bus_resume(struct device *dev) return ret; } +#ifdef CONFIG_PM_RUNTIME + +static int mmc_runtime_suspend(struct device *dev) +{ + struct mmc_card *card = mmc_dev_to_card(dev); + + return mmc_power_save_host(card->host); +} + +static int mmc_runtime_resume(struct device *dev) +{ + struct mmc_card *card = mmc_dev_to_card(dev); + + return mmc_power_restore_host(card->host); +} + +static int mmc_runtime_idle(struct device *dev) +{ + return pm_runtime_suspend(dev); +} + +static const struct dev_pm_ops mmc_bus_pm_ops = { + .runtime_suspend = mmc_runtime_suspend, + .runtime_resume = mmc_runtime_resume, + .runtime_idle = mmc_runtime_idle, +}; + +#define MMC_PM_OPS_PTR (&mmc_bus_pm_ops) + +#else /* !CONFIG_PM_RUNTIME */ + +#define MMC_PM_OPS_PTR NULL + +#endif /* !CONFIG_PM_RUNTIME */ + static struct bus_type mmc_bus_type = { .name = "mmc", .dev_attrs = mmc_dev_attrs, @@ -150,6 +186,7 @@ static struct bus_type mmc_bus_type = { .remove = mmc_bus_remove, .suspend = mmc_bus_suspend, .resume = mmc_bus_resume, + .pm = MMC_PM_OPS_PTR, }; int mmc_register_bus(void) |
