Hi Marek,
Looks good to me. But, the patch subject is wrong as following:
- max88743 -> max77843
If you fix the subject, feel free to add my acked-tag.
Acked-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
Regards,
Chanwoo Choi
On 2017년 10월 18일 18:28, Marek Szyprowski wrote:
> Enabling power on VBUS micro-usb pin is required only when passive OTG
> cable is connected. Initially OTG VBUS power control was planned to be
> done in charger driver. However such information is not really available
> from the extcon notifications, so VBUS power control has to be done
> directly in MUIC driver, which has all information about the attached
> accessory.
>
> For example SmartDock is externally powered accessory, provides OTG
> (USB HOST) functionality and use VBUS pin for charging a device battery,
> so the VBUS charging pump should be disabled in such case.
>
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> drivers/extcon/extcon-max77843.c | 16 ++++++++++++++++
> include/linux/mfd/max77843-private.h | 3 +++
> 2 files changed, 19 insertions(+)
>
> diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
> index 6e722d552cf1..217c743405f8 100644
> --- a/drivers/extcon/extcon-max77843.c
> +++ b/drivers/extcon/extcon-max77843.c
> @@ -240,6 +240,21 @@ static int max77843_muic_set_path(struct max77843_muic_info *info,
> return 0;
> }
>
> +static void max77843_charger_set_otg_vbus(struct max77843_muic_info *info,
> + bool on)
> +{
> + struct max77693_dev *max77843 = info->max77843;
> + unsigned int cnfg00;
> +
> + if (on)
> + cnfg00 = MAX77843_CHG_OTG_MASK | MAX77843_CHG_BOOST_MASK;
> + else
> + cnfg00 = MAX77843_CHG_ENABLE | MAX77843_CHG_BUCK_MASK;
> +
> + regmap_update_bits(max77843->regmap_chg, MAX77843_CHG_REG_CHG_CNFG_00,
> + MAX77843_CHG_MODE_MASK, cnfg00);
> +}
> +
> static int max77843_muic_get_cable_type(struct max77843_muic_info *info,
> enum max77843_muic_cable_group group, bool *attached)
> {
> @@ -355,6 +370,7 @@ static int max77843_muic_adc_gnd_handler(struct max77843_muic_info *info)
> return ret;
>
> extcon_set_state_sync(info->edev, EXTCON_USB_HOST, attached);
> + max77843_charger_set_otg_vbus(info, attached);
> break;
> case MAX77843_MUIC_GND_MHL_VB:
> case MAX77843_MUIC_GND_MHL:
> diff --git a/include/linux/mfd/max77843-private.h b/include/linux/mfd/max77843-private.h
> index c19303b0ccfd..0223cd5941c8 100644
> --- a/include/linux/mfd/max77843-private.h
> +++ b/include/linux/mfd/max77843-private.h
> @@ -245,10 +245,13 @@ enum max77843_irq_muic {
> #define MAX77843_CHG_OVER_CURRENT_BAT (0x06 << 4)
>
> /* MAX77843 CHG_CNFG_00 register */
> +#define MAX77843_CHG_MODE_MASK 0x0f
> #define MAX77843_CHG_DISABLE 0x00
> #define MAX77843_CHG_ENABLE 0x05
> #define MAX77843_CHG_MASK 0x01
> +#define MAX77843_CHG_OTG_MASK 0x02
> #define MAX77843_CHG_BUCK_MASK 0x04
> +#define MAX77843_CHG_BOOST_MASK 0x08
>
> /* MAX77843 CHG_CNFG_01 register */
> #define MAX77843_CHG_RESTART_THRESHOLD_100 0x00
>
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