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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2013-10-17 12:46:48 +0200
committerChris Ball <chris@printf.net>2014-01-13 13:03:40 -0500
commit9e7861f500ea2777c82e69b77b965fb8220cd1c5 (patch)
tree1b8994a516651776d1b42043a9ce465342c47b5f
parent390145f9adcf2730fcee81c8a51fd7c6c08f705f (diff)
mmc: atmel-mci: add vmmc-supply support
Other MMC hosts handle a regulator named vmmc-supply that allows to power the MMC card or SDIO device before communicating on the bus. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Chris Ball <chris@printf.net>
-rw-r--r--drivers/mmc/host/atmel-mci.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 945a31d7736..42706ea0ba8 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1402,8 +1402,14 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
clk_unprepare(host->mck);
switch (ios->power_mode) {
+ case MMC_POWER_OFF:
+ if (!IS_ERR(mmc->supply.vmmc))
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+ break;
case MMC_POWER_UP:
set_bit(ATMCI_CARD_NEED_INIT, &slot->flags);
+ if (!IS_ERR(mmc->supply.vmmc))
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
break;
default:
/*
@@ -2215,6 +2221,7 @@ static int __init atmci_init_slot(struct atmel_mci *host,
}
host->slot[id] = slot;
+ mmc_regulator_get_supply(mmc);
mmc_add_host(mmc);
if (gpio_is_valid(slot->detect_pin)) {