diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-06-26 10:38:57 +0200 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-07-22 21:25:35 +0200 |
| commit | 4dc5a79f1350718ac31e4ab87eebce112b117a34 (patch) | |
| tree | 85f02a2db2ed28aadba76357e9127bd49ab13952 /drivers/mmc/host/mxs-mmc.c | |
| parent | mmc: core: correct invalid error checking (diff) | |
| download | linux-4dc5a79f1350718ac31e4ab87eebce112b117a34.tar.xz linux-4dc5a79f1350718ac31e4ab87eebce112b117a34.zip | |
mmc: mxs-mmc: enable regulator for mmc slot
If bootloader or platform initialization code does not enable the
power supply to mmc slot, we need to do it in mmc driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/mxs-mmc.c')
| -rw-r--r-- | drivers/mmc/host/mxs-mmc.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 277161d279b8..2247c50f9869 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -707,6 +707,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) struct pinctrl *pinctrl; int ret = 0, irq_err, irq_dma; dma_cap_mask_t mask; + struct regulator *reg_vmmc; iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0); @@ -747,6 +748,16 @@ static int mxs_mmc_probe(struct platform_device *pdev) host->mmc = mmc; host->sdio_irq_en = 0; + reg_vmmc = devm_regulator_get(&pdev->dev, "vmmc"); + if (!IS_ERR(reg_vmmc)) { + ret = regulator_enable(reg_vmmc); + if (ret) { + dev_err(&pdev->dev, + "Failed to enable vmmc regulator: %d\n", ret); + goto out_mmc_free; + } + } + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); if (IS_ERR(pinctrl)) { ret = PTR_ERR(pinctrl); |