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authorJaehoon Chung <jh80.chung@samsung.com>2013-03-26 21:36:14 +0900
committerChris Ball <cjb@laptop.org>2013-04-04 10:08:37 -0400
commit4366dcc52a43746066e43c3eb8b3c5e0cca2e6f6 (patch)
tree7b7bdf457d8c1578b2d7c3e38d619ca5ef279089 /drivers/mmc/host
parente065162ae476f55376ba06f9e80f41b28f769938 (diff)
downloadvexpress-lsk-4366dcc52a43746066e43c3eb8b3c5e0cca2e6f6.tar.gz
mmc: dw_mmc: control the power-enable register
When card is power-on/off, need to control the power-enable register. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: James Hogan <james.hogan@imgtec.com> Acked-by: Seungwon Jeon <tgih.jun@samsung.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/dw_mmc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 753c55c20c5..c6caedc2e84 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -821,11 +821,17 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
/* Power up slot */
if (slot->host->pdata->setpower)
slot->host->pdata->setpower(slot->id, mmc->ocr_avail);
+ regs = mci_readl(slot->host, PWREN);
+ regs |= (1 << slot->id);
+ mci_writel(slot->host, PWREN, regs);
break;
case MMC_POWER_OFF:
/* Power down slot */
if (slot->host->pdata->setpower)
slot->host->pdata->setpower(slot->id, 0);
+ regs = mci_readl(slot->host, PWREN);
+ regs &= ~(1 << slot->id);
+ mci_writel(slot->host, PWREN, regs);
break;
default:
break;