mmc: sh_mmcif: support aggressive clock gating

Commit Message

Guennadi Liakhovetski Feb. 25, 2011, 3:58 p.m. UTC

None

Patch

diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 12884c2..3d735da 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -850,15 +850,15 @@  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)