diff options
| author | Ulf Hansson <ulf.hansson@stericsson.com> | 2012-02-24 11:22:42 +0100 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@linaro.org> | 2012-03-06 17:30:19 +0100 |
| commit | de905ebabc69d9618b61896f0c45310134c76e05 (patch) | |
| tree | a7cf7a32213a36fd3bbd1cc4d01ad92552820490 | |
| parent | 85dfb19d74d7de94c21eaec00a459bed8c555af9 (diff) | |
mmc: mmci: Add support for start_signal_voltage_switch
This function switches I/O voltage, which is needed to
support UHS-I cards with 1.8V I/O.
Change-Id: Id33a9c6e15bd4ba598e533bf9115cb7583369706
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/50383
Reviewed-by: Per FORLIN <per.forlin@stericsson.com>
| -rw-r--r-- | drivers/mmc/host/mmci.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index fdf7d8f894e..6d42941c600 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1232,6 +1232,21 @@ static int mmci_get_cd(struct mmc_host *mmc) return status; } +static int mmci_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios) +{ + struct mmci_host *host = mmc_priv(mmc); + int ret = 0; + + if (host->plat->ios_handler) { + pm_runtime_get_sync(mmc_dev(mmc)); + ret = host->plat->ios_handler(mmc_dev(mmc), ios); + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); + } + + return ret; +} + static irqreturn_t mmci_cd_irq(int irq, void *dev_id) { struct mmci_host *host = dev_id; @@ -1248,6 +1263,7 @@ static const struct mmc_host_ops mmci_ops = { .set_ios = mmci_set_ios, .get_ro = mmci_get_ro, .get_cd = mmci_get_cd, + .start_signal_voltage_switch = mmci_sig_volt_switch, }; static int __devinit mmci_probe(struct amba_device *dev, |