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SubjectRe: [PATCH v2 1/2] extcon-intel-cht-wc: Make charger detection co-existed with OTG host mode
On Wed, Feb 20, 2019 at 12:24:40AM +0300, Yauhen Kharuzhy wrote:
> Whiskey Cove Cherry Trail PMIC requires disabling OTG host mode before
> of charger detection procedure. Do this by manipulationg of CHGRCTRL1
> register.
>
> Source: APCI DSDT code of Lenovo Yoga Book YB1-X91L and open-sourced
> Intel's drivers.

Some minor comments below.

Otherwise,

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> -#define CHT_WC_CHGRCTRL1 0x5e17
> +#define CHT_WC_CHGRCTRL1 0x5e17

Not related change?

> +#define CHT_WC_CHGRCTRL1_DBPEN_MASK BIT(7)

Drop the _MASK, it's one bit anyway.

> +#define CHT_WC_CHGRCTRL1_OTGMODE BIT(6)
> +#define CHT_WC_CHGRCTRL1_FTEMP_EVENT BIT(5)
> +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_1500 BIT(4)
> +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_900 BIT(3)
> +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_500 BIT(2)
> +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_150 BIT(1)
> +#define CHT_WC_CHGRCTRL1_FUSB_INLMT_100 BIT(0)

I think better to keep ascending order.

> +static void cht_wc_extcon_set_otgmode(struct cht_wc_extcon_data *ext,
> + bool enable)
> +{
> + unsigned int chgrctrl1;
> + int ret;
> +
> + ret = regmap_read(ext->regmap, CHT_WC_CHGRCTRL1, &chgrctrl1);
> + if (ret) {
> + dev_err(ext->dev, "Error reading CHGRCTRL1 reg: %d\n", ret);
> + return;
> + }
> +
> + if (enable)
> + chgrctrl1 |= CHT_WC_CHGRCTRL1_OTGMODE;
> + else
> + chgrctrl1 &= ~(CHT_WC_CHGRCTRL1_OTGMODE);

Redundant parens.

> +
> + ret = regmap_write(ext->regmap, CHT_WC_CHGRCTRL1, chgrctrl1);
> + if (ret)
> + dev_err(ext->dev,
> + "Error writing CHGRCTRL1 OTG mode bit: %d\n", ret);
> +}

--
With Best Regards,
Andy Shevchenko


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