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Commit 7405df4c authored by Ulf Hansson's avatar Ulf Hansson
Browse files

mmc: core: Implement ->sw_reset bus ops for SDIO 



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: default avatarUlf Hansson <ulf.hansson@linaro.org>
Tested-by: default avatarQuentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: default avatarShawn Lin <shawn.lin@rock-chips.com>
parent 508c9864

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,

};