linux-kernel - Re: [PATCH v3] extcon: intel-cht-wc: Add Intel Cherry Trail Whiskey Cove PMIC extcon driver

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Date:   Fri, 24 Mar 2017 13:38:03 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Hans de Goede <hdegoede@...hat.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>
Cc:     Takashi Iwai <tiwai@...e.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] extcon: intel-cht-wc: Add Intel Cherry Trail Whiskey
 Cove PMIC extcon driver

Hi,

On 2017년 03월 24일 01:01, Hans de Goede wrote:
> Add a driver for charger detection / control on the Intel Cherrytrail
> Whiskey Cove PMIC.
> 
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> ---
> Changes in v2:
> -Improve wait for charger detection loop, use jiffies to get an accurate timeout
> -Sort registers by address, remove duplicate definition
> -Return IRQ_NONE on interrupt handling errors
> -Various small style cleanups
> -Fix reporting no charger cable being present when detecting the same
>  charger type 2 times in a row
> -Reset to autonomous / hw-mode on probe-error and on remove
> Changes in v3:
> -Add intel prefix to Kconfig symbol and filename
> -Clarified "Unhandled charger type" warning msg
> -Dropped usb_id sysfs attribute
> ---
>  drivers/extcon/Kconfig               |   7 +
>  drivers/extcon/Makefile              |   1 +
>  drivers/extcon/extcon-intel-cht-wc.c | 352 +++++++++++++++++++++++++++++++++++
>  3 files changed, 360 insertions(+)
>  create mode 100644 drivers/extcon/extcon-intel-cht-wc.c
> 

Applied it on extcon-next branch.

[snip]

> +	usbsrc = (usbsrc & CHT_WC_USBSRC_TYPE_MASK) >> CHT_WC_USBSRC_TYPE_SHIFT;
> +	switch (usbsrc) {
> +	default:
> +		dev_warn(ext->dev, "Unhandled charger type %d, defaulting to SDP\n",

Nit:
This line is over length 80. So, I changed it as following

		dev_warn(ext->dev,
			"Unhandled charger type %d, defaulting to SDP\n",

> +			 ret);
> +		/* Fall through, treat as SDP */
> +	case CHT_WC_USBSRC_TYPE_SDP:
> +	case CHT_WC_USBSRC_TYPE_FLOAT_DP_DN:
> +	case CHT_WC_USBSRC_TYPE_OTHER:
> +		return EXTCON_CHG_USB_SDP;
> +	case CHT_WC_USBSRC_TYPE_CDP:
> +		return EXTCON_CHG_USB_CDP;
> +	case CHT_WC_USBSRC_TYPE_DCP:
> +	case CHT_WC_USBSRC_TYPE_DCP_EXTPHY:
> +	case CHT_WC_USBSRC_TYPE_MHL: /* MHL2+ delivers upto 2A, treat as DCP */
> +		return EXTCON_CHG_USB_DCP;
> +	case CHT_WC_USBSRC_TYPE_ACA:
> +		return EXTCON_CHG_USB_ACA;
> +	}
> +}

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics