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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2011-02-25 16:58:38 +0100
committerChris Ball <cjb@laptop.org>2011-03-16 12:30:25 -0400
commitf5e0cec4495398b259b3ede7cbc3ce4bd0e1cef0 (patch)
tree1ba09ad3756365de0fcd64185592014e33e5376e /drivers/mmc/host/sh_mmcif.c
parentb676f0391a5f6816c047cbd1e2ad2a897f3c161a (diff)
downloadop-kernel-dev-f5e0cec4495398b259b3ede7cbc3ce4bd0e1cef0.zip
op-kernel-dev-f5e0cec4495398b259b3ede7cbc3ce4bd0e1cef0.tar.gz
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: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/sh_mmcif.c')
-rw-r--r--drivers/mmc/host/sh_mmcif.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index aea8626..af97015 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -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)
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