Add a power_restore handler to the SDIO bus ops,
in order to support waking up SDIO cards that
were powered off by runtime pm.
Note: this approach would also require changing
the power_restore/save bus handlers to support
a return value.
Signed-off-by: Ohad Ben-Cohen <o...@wizery.com>
---
drivers/mmc/core/sdio.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 645f173..ddbb9d3 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -511,11 +511,27 @@ static int mmc_sdio_resume(struct mmc_host *host)
return err;
}
+static void mmc_sdio_power_restore(struct mmc_host *host)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+ err = mmc_sdio_init_card(host, host->ocr, host->card,
+ (host->pm_flags & MMC_PM_KEEP_POWER));
+ if (!err && host->sdio_irqs)
+ mmc_signal_sdio_irq(host);
+ mmc_release_host(host);
+}
+
static const struct mmc_bus_ops mmc_sdio_ops = {
.remove = mmc_sdio_remove,
.detect = mmc_sdio_detect,
.suspend = mmc_sdio_suspend,
.resume = mmc_sdio_resume,
+ .power_restore = mmc_sdio_power_restore,
};
--
1.7.0.4
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