linux-kernel - Re: [PATCH v4 17/20] extcon: intel-cht-wc: Support devs with Micro-B / USB-2 only Type-C connectors

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Message-ID: <48dad73d-7632-3367-98f7-98f7739d0c21@redhat.com>
Date:   Mon, 31 Jan 2022 16:21:37 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Andy Shevchenko <andriy.shevchenko@...el.com>
Cc:     "Rafael J . Wysocki" <rafael@...nel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Mark Gross <markgross@...nel.org>,
        Andy Shevchenko <andy@...nel.org>,
        Wolfram Sang <wsa@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Ard Biesheuvel <ardb@...nel.org>, Len Brown <lenb@...nel.org>,
        linux-acpi@...r.kernel.org, Yauhen Kharuzhy <jekhor@...il.com>,
        Tsuchiya Yuto <kitakar@...il.com>,
        Fabio Aiuto <fabioaiuto83@...il.com>,
        platform-driver-x86@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org
Subject: Re: [PATCH v4 17/20] extcon: intel-cht-wc: Support devs with Micro-B
 / USB-2 only Type-C connectors

Hi,

On 1/31/22 14:54, Andy Shevchenko wrote:
> On Sun, Jan 30, 2022 at 09:45:54PM +0100, Hans de Goede wrote:
>> So far the extcon-intel-cht-wc code has only been tested on devices with
>> a Type-C connector with USB-PD, USB3 (superspeed) and DP-altmode support
>> through a FUSB302 Type-C controller.
>>
>> Some devices with the intel-cht-wc PMIC however come with an USB-micro-B
>> connector, or an USB-2 only Type-C connector without USB-PD.
>>
>> Which device-model we are running on can be identified with the new
>> cht_wc_model intel_soc_pmic field. On models without a Type-C controller
>> the extcon code must control the Vbus 5V boost converter and the USB role
>> switch depending on the detected cable-type.
> 
> ...
> 
>> +	if (ext->vbus_boost && ext->vbus_boost_enabled != enable) {
>> +		if (enable)
>> +			ret = regulator_enable(ext->vbus_boost);
>> +		else
>> +			ret = regulator_disable(ext->vbus_boost);
> 
>> +		if (ret == 0)
>> +			ext->vbus_boost_enabled = enable;
>> +		else
>> +			dev_err(ext->dev, "Error updating Vbus boost regulator: %d\n", ret);
> 
> Can we go with
> 
> 		if (ret)
> 			dev_err(ext->dev, "Error updating Vbus boost regulator: %d\n", ret);
> 		else
> 			ext->vbus_boost_enabled = enable;
> 
> ?

Ack, fixed for v5.

Regards,

Hans