diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-06-13 15:07:51 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-06-20 10:30:49 +0200 |
| commit | 03dbaa04a2e5bac0ae907a9ed31472bc4bb56fd3 (patch) | |
| tree | 74384a33ffcde72122f4c45a088852d4b3587fad | |
| parent | d2a47176a877b1eccd3086a4c8d790d644d594cb (diff) | |
mmc: slot-gpio: Add support to enable irq wake on cd_irq
Add host capability MMC_CAP_CD_WAKE to enable irq wake on the card detect
irq.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/core.c | 5 | ||||
| -rw-r--r-- | drivers/mmc/core/slot-gpio.c | 2 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 2 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index d40697fae911..26431267a3e2 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2652,8 +2652,11 @@ void mmc_stop_host(struct mmc_host *host) host->removed = 1; spin_unlock_irqrestore(&host->lock, flags); #endif - if (host->slot.cd_irq >= 0) + if (host->slot.cd_irq >= 0) { + if (host->slot.cd_wake_enabled) + disable_irq_wake(host->slot.cd_irq); disable_irq(host->slot.cd_irq); + } host->rescan_disable = 1; cancel_delayed_work_sync(&host->detect); diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c index a8450a8701e4..863f1dbbfc1b 100644 --- a/drivers/mmc/core/slot-gpio.c +++ b/drivers/mmc/core/slot-gpio.c @@ -151,6 +151,8 @@ void mmc_gpiod_request_cd_irq(struct mmc_host *host) if (irq < 0) host->caps |= MMC_CAP_NEEDS_POLL; + else if ((host->caps & MMC_CAP_CD_WAKE) && !enable_irq_wake(irq)) + host->slot.cd_wake_enabled = true; } EXPORT_SYMBOL(mmc_gpiod_request_cd_irq); diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index c81380a2181f..ebd1cebbef0c 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -185,6 +185,7 @@ struct mmc_async_req { */ struct mmc_slot { int cd_irq; + bool cd_wake_enabled; void *handler_priv; }; @@ -275,6 +276,7 @@ struct mmc_host { #define MMC_CAP_DRIVER_TYPE_A (1 << 23) /* Host supports Driver Type A */ #define MMC_CAP_DRIVER_TYPE_C (1 << 24) /* Host supports Driver Type C */ #define MMC_CAP_DRIVER_TYPE_D (1 << 25) /* Host supports Driver Type D */ +#define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ #define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ |