Commit 03dbaa04a2e5 ("mmc: slot-gpio: Add support to enable irq wake on
cd_irq") enabled wakeup irrespective of the host controller's PM flags.
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@xxxxxxxxx>
---
drivers/mmc/core/slot-gpio.c | 2 --
drivers/mmc/host/sdhci-pci-core.c | 18 ++++++++++++++----
drivers/mmc/host/sdhci.c | 4 ++++
3 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/mmc/core/slot-gpio.c b/drivers/mmc/core/slot-gpio.c
index 817d668aae34..02d5dd815099 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..bd6ee968bcd9 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -41,18 +41,25 @@
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)
@@ -1698,6 +1705,9 @@ 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);
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 565d24ccb2f2..511a9a51b1c7 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2977,6 +2977,8 @@ int sdhci_suspend_host(struct sdhci_host *host)
free_irq(host->irq, host);
}
+ mmc_gpio_set_cd_wake(host->mmc, true);
+
return 0;
}
@@ -3004,6 +3006,8 @@ int sdhci_resume_host(struct sdhci_host *host)
mmiowb();
}
+ mmc_gpio_set_cd_wake(host->mmc, false);
+
if (host->irq_wake_enabled) {
sdhci_disable_irq_wakeups(host);
} else {
--
1.9.1
--
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