mmc: at91_mci: wakeup on card insertion (or removal)
This piece of code enable the system to be wake-up by a card insertion or removal.
Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Nicolas Ferre <nicolas.ferre@rfo.atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 28c8818..15aab37 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -903,8 +903,10 @@
/*
* Add host to MMC layer
*/
- if (host->board->det_pin)
+ if (host->board->det_pin) {
host->present = !at91_get_gpio_value(host->board->det_pin);
+ device_init_wakeup(&pdev->dev, 1);
+ }
else
host->present = -1;
@@ -940,6 +942,7 @@
host = mmc_priv(mmc);
if (host->present != -1) {
+ device_init_wakeup(&pdev->dev, 0);
free_irq(host->board->det_pin, host);
cancel_delayed_work(&host->mmc->detect);
}
@@ -966,8 +969,12 @@
static int at91_mci_suspend(struct platform_device *pdev, pm_message_t state)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(host->board->det_pin);
+
if (mmc)
ret = mmc_suspend_host(mmc, state);
@@ -977,8 +984,12 @@
static int at91_mci_resume(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
+ struct at91mci_host *host = mmc_priv(mmc);
int ret = 0;
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(host->board->det_pin);
+
if (mmc)
ret = mmc_resume_host(mmc);