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authorAdrian Hunter <adrian.hunter@intel.com>2018-02-27 14:51:26 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2018-03-05 13:04:33 +0100
commitd56ee1ff30860b12d6a072676114abb9d63f03b9 (patch)
tree918f9648f41a8bcb33cd7b60544f646d88e3c47d /drivers/mmc
parent36f1d7e817a5540f6624ce1007339688bd443308 (diff)
downloadlinux-d56ee1ff30860b12d6a072676114abb9d63f03b9.tar.bz2
mmc: sdhci-pci: Respect PM flags when enabling card detect GPIO IRQ wakeup
Commit 03dbaa04a2e5 ("mmc: slot-gpio: Add support to enable irq wake on cd_irq") enabled wakeup at initialization. However, users also want to control it from sysfs power/wakeup attribute. That means the driver needs to check the PM flags before enabling it in the suspend callback. Add support for that in sdhci-pci, which is the only driver presently using the MMC_CAP_CD_WAKE flag, and remove the enabling in mmc_gpiod_request_cd_irq() Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/slot-gpio.c2
-rw-r--r--drivers/mmc/host/sdhci-pci-core.c23
2 files changed, 19 insertions, 6 deletions
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index dccbc52af5c4..31f7dbb15668 100644
--- a/drivers/mmc/core/slot-gpio.c
+++ b/drivers/mmc/core/slot-gpio.c
@@ -149,8 +149,6 @@ 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/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index ce21d86a8141..787434e5589d 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -41,18 +41,25 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host);
static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip)
{
mmc_pm_flag_t pm_flags = 0;
+ bool cap_cd_wake = false;
int i;
for (i = 0; i < chip->num_slots; i++) {
struct sdhci_pci_slot *slot = chip->slots[i];
- if (slot)
+ if (slot) {
pm_flags |= slot->host->mmc->pm_flags;
+ if (slot->host->mmc->caps & MMC_CAP_CD_WAKE)
+ cap_cd_wake = true;
+ }
}
- return device_set_wakeup_enable(&chip->pdev->dev,
- (pm_flags & MMC_PM_KEEP_POWER) &&
- (pm_flags & MMC_PM_WAKE_SDIO_IRQ));
+ if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ))
+ return device_wakeup_enable(&chip->pdev->dev);
+ else if (!cap_cd_wake)
+ return device_wakeup_disable(&chip->pdev->dev);
+
+ return 0;
}
static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
@@ -76,6 +83,9 @@ static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip)
ret = sdhci_suspend_host(host);
if (ret)
goto err_pci_suspend;
+
+ if (device_may_wakeup(&chip->pdev->dev))
+ mmc_gpio_set_cd_wake(host->mmc, true);
}
return 0;
@@ -99,6 +109,8 @@ int sdhci_pci_resume_host(struct sdhci_pci_chip *chip)
ret = sdhci_resume_host(slot->host);
if (ret)
return ret;
+
+ mmc_gpio_set_cd_wake(slot->host->mmc, false);
}
return 0;
@@ -1698,6 +1710,9 @@ static struct sdhci_pci_slot *sdhci_pci_probe_slot(
if (device_can_wakeup(&pdev->dev))
host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ;
+ if (host->mmc->caps & MMC_CAP_CD_WAKE)
+ device_init_wakeup(&pdev->dev, true);
+
if (slot->cd_idx >= 0) {
ret = mmc_gpiod_request_cd(host->mmc, NULL, slot->cd_idx,
slot->cd_override_level, 0, NULL);