[PATCH v3 1/4] omap4 hsmmc: Adding card detect support for MMC1

kishore kadiyala kishorek.kadiyala at gmail.com
Thu Sep 23 01:52:20 EDT 2010


Hi Hari,

On Thu, Sep 23, 2010 at 1:19 AM, Kanigeri, Hari <h-kanigeri2 at ti.com> wrote:
> Kishore,
>
>> +int twl6030_mmc_card_detect(struct device *dev, int slot)
>> +{
>> +     int ret = -EIO;
>> +     u8 read_reg = 0;
>> +     struct platform_device *pdev = to_platform_device(dev);
>> +
>> +     switch (pdev->id) {
>> +     case 0:
>> +             /*
>> +              * BIT0 of REG_MMC_CTRL
>> +              * 0 - Card not present ,1 - Card present
>> +              */
>> +             ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &read_reg,
>> +                                                     TWL6030_MMCCTRL);
>> +             if (ret >= 0)
>> +                     ret = read_reg & STS_MMC;
>> +             break;
>
> nitpick: may be you don't need a switch statement for only one case.



More information about the linux-arm-kernel mailing list