Commit 4dc5a79f authored by Shawn Guo's avatar Shawn Guo Committed by Chris Ball
Browse files

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: default avatarShawn Guo <shawn.guo@linaro.org>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent b63b5e81

drivers/mmc/host/mxs-mmc.c

+11 −0
Original line number Diff line number Diff line
@@ -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);