On 16 October 2013 16:32, Alexandre Belloni
<alexandre.belloni@xxxxxxxxxxxxxxxxxx> wrote:
> 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@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/mmc/host/atmel-mci.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
> index 69e438e..deffa1f 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -23,6 +23,7 @@
> #include <linux/of_device.h>
> #include <linux/of_gpio.h>
> #include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> #include <linux/scatterlist.h>
> #include <linux/seq_file.h>
> #include <linux/slab.h>
> @@ -2355,6 +2356,7 @@ static int __init atmci_probe(struct platform_device *pdev)
> struct mci_platform_data *pdata;
> struct atmel_mci *host;
> struct resource *regs;
> + struct regulator *reg_vmmc;
> unsigned int nr_slots;
> int irq;
> int ret;
> @@ -2371,6 +2373,16 @@ static int __init atmci_probe(struct platform_device *pdev)
> }
> }
>
> + reg_vmmc = devm_regulator_get(&pdev->dev, "vmmc");
Use "mmc_regulator_get_supply" instead. This will also try to setup
the "ocr_avail" mask, which is likely what you need as well.
Kind regards
Ulf Hansson
> + if (!IS_ERR(reg_vmmc)) {
> + ret = regulator_enable(reg_vmmc);
> + if (ret) {
> + dev_err(&pdev->dev,
> + "Failed to enable vmmc regulator: %d\n", ret);
> + return ret;
> + }
> + }
> +
> irq = platform_get_irq(pdev, 0);
> if (irq < 0)
> return irq;
> --
> 1.8.1.2
>
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