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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>
hifive-unleashed-5.1
Jaehoon Chung 2013-03-26 21:36:14 +09:00 committed by Chris Ball
parent e065162ae4
commit 4366dcc52a
1 changed files with 6 additions and 0 deletions
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6
drivers/mmc/host/dw_mmc.c
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@ -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;