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mmc: sh_mmcif: support aggressive clock gating

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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: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski 2011-02-25 16:58:38 +01:00 committed by Chris Ball
parent b676f0391a
commit f5e0cec449
1 changed files with 7 additions and 7 deletions
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14
drivers/mmc/host/sh_mmcif.c
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@ -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_host *host = mmc_priv(mmc);
struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; 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) {
/* clock stop */
sh_mmcif_clock_control(host, 0);
if (p->down_pwr)
p->down_pwr(host->pd);
return;
} else if (ios->power_mode == MMC_POWER_UP) {
if (p->set_pwr) if (p->set_pwr)
p->set_pwr(host->pd, ios->power_mode); 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 (ios->power_mode == MMC_POWER_OFF && p->down_pwr)
p->down_pwr(host->pd);
return;
} }
if (ios->clock) if (ios->clock)