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Commit f5e0cec4 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Chris Ball
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mmc: sh_mmcif: support aggressive clock gating 



To support MMC aggressive clock gating the driver has to stop the
interface clock when the .set_ios() method is called with .clock == 0.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent b676f039

drivers/mmc/host/sh_mmcif.c

+5 −5
Original line number Diff line number Diff line
@@ -844,15 +844,15 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 
	struct sh_mmcif_host *host = mmc_priv(mmc);

	struct sh_mmcif_plat_data *p = host->pd->dev.platform_data;



	if (ios->power_mode == MMC_POWER_OFF) {

	if (ios->power_mode == MMC_POWER_UP) {

		if (p->set_pwr)

			p->set_pwr(host->pd, ios->power_mode);

	} else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {

		/* clock stop */

		sh_mmcif_clock_control(host, 0);

		if (p->down_pwr)

		if (ios->power_mode == MMC_POWER_OFF && p->down_pwr)

			p->down_pwr(host->pd);

		return;

	} else if (ios->power_mode == MMC_POWER_UP) {

		if (p->set_pwr)

			p->set_pwr(host->pd, ios->power_mode);

	}



	if (ios->clock)