linux-kernel - Re: [PATCH v6 04/10] regulator: fixed: add support for ACPI interface

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Date:	Fri, 29 Apr 2016 08:31:39 +0800
From:	Lu Baolu <baolu.lu@...ux.intel.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	felipe.balbi@...ux.intel.com,
	Mathias Nyman <mathias.nyman@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Lee Jones <lee.jones@...aro.org>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 04/10] regulator: fixed: add support for ACPI interface

Hi,

On 04/29/2016 01:15 AM, Mark Brown wrote:
> On Thu, Apr 28, 2016 at 01:55:35PM +0800, Lu Baolu wrote:
>
>> How about below code?
>> +       gpiod = gpiod_get(dev, "vbus_en", GPIOD_ASIS);
>> +       if (IS_ERR(gpiod))
>> +               return PTR_ERR(gpiod);
>> +
>> +       config->gpio = desc_to_gpio(gpiod);
>> +       config->enable_high = device_property_read_bool(dev,
>> +                                                       "enable-active-high");
>> +       gpiod_put(gpiod);
>
> That looks reasonable, though if you use "gpio" as the name like DT you
> could keep the code the same which would be even better?  Not super
> crticial though.

Systems might implement the name mapping in BIOS by implementing _DSD.
The "gpio" looks a little generic. I'd like to use a function specific name.

I will send a refreshed patch later.

Best regards,
Lu Baolu