From mboxrd@z Thu Jan  1 00:00:00 1970
From: dmitry.torokhov@gmail.com (Dmitry Torokhov)
Date: Wed, 20 Aug 2014 14:29:17 -0500
Subject: [PATCH v3 2/4] pwm: rockchip: Allow polarity invert on rk3288
In-Reply-To: <CAD=FV=U9gOiY=4s7WmAQcm0n9s67nWdqQ3A0L2B7Dg83dNotjQ@mail.gmail.com>
References: <1408464476-28316-1-git-send-email-dianders@chromium.org>
 <1408464476-28316-3-git-send-email-dianders@chromium.org>
 <20140820100447.GG15414@ulmo>
 <CAD=FV=U9gOiY=4s7WmAQcm0n9s67nWdqQ3A0L2B7Dg83dNotjQ@mail.gmail.com>
Message-ID: <387c82a0-efeb-431d-b8a5-200f24bc47ff@email.android.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On August 20, 2014 1:54:11 PM CDT, Doug Anderson <dianders@chromium.org> wrote:
>On Wed, Aug 20, 2014 at 3:04 AM, Thierry Reding
><thierry.reding@gmail.com> wrote:
>> On Tue, Aug 19, 2014 at 09:07:54AM -0700, Doug Anderson wrote:
>>> The rk3288 has the ability to invert 
>>> +     struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
>>> +
>>> +     if (!pc->data->has_invert)
>>> +             return -ENOSYS;
>>> +

At the kernel summit hpa also mentioned that ENOSYS should only be used for missing syscalls. Not sure what error code would suit better here though...


Thanks.

-- 
Dmitry