mmc: sdio: add power_restore support (d3fe37b1) · Commits · 戴 / test

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. Signed-off-by:

drivers/mmc/core/sdio.c

+18 −0

Original line number	Diff line number	Diff line
		@@ -638,11 +638,29 @@ static int mmc_sdio_resume(struct mmc_host *host)
		return err;
		}

		static int mmc_sdio_power_restore(struct mmc_host *host)
		{
		int ret;

		BUG_ON(!host);
		BUG_ON(!host->card);

		mmc_claim_host(host);
		ret = mmc_sdio_init_card(host, host->ocr, host->card,
		(host->pm_flags & MMC_PM_KEEP_POWER));
		if (!ret && host->sdio_irqs)
		mmc_signal_sdio_irq(host);
		mmc_release_host(host);

		return ret;
		}

		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,
		};