mmc: core: Implement ->sw_reset bus ops for SDIO (7405df4c) · Commits · 戴 / test

Let's implement the ->sw_reset() bus ops to allow SDIO func drivers, in particular, to make a SW reset without doing a full power cycle of the SDIO card. Signed-off-by:

Ulf Hansson <ulf.hansson@linaro.org> Tested-by:

Quentin Schulz <quentin.schulz@bootlin.com> Reviewed-by:

Shawn Lin <shawn.lin@rock-chips.com>

drivers/mmc/core/sdio.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -1056,6 +1056,18 @@ static int mmc_sdio_hw_reset(struct mmc_host *host)
		return mmc_sdio_power_restore(host);
		}

		static int mmc_sdio_sw_reset(struct mmc_host *host)
		{
		mmc_set_clock(host, host->f_init);
		sdio_reset(host);
		mmc_go_idle(host);

		mmc_set_initial_state(host);
		mmc_set_initial_signal_voltage(host);

		return mmc_sdio_reinit_card(host, 0);
		}

		static const struct mmc_bus_ops mmc_sdio_ops = {
		.remove = mmc_sdio_remove,
		.detect = mmc_sdio_detect,
		@@ -1067,6 +1079,7 @@ static const struct mmc_bus_ops mmc_sdio_ops = {
		.power_restore = mmc_sdio_power_restore,
		.alive = mmc_sdio_alive,
		.hw_reset = mmc_sdio_hw_reset,
		.sw_reset = mmc_sdio_sw_reset,
		};

Admin message