[PATCH v3] drm/bridge: ti-sn65dsi86: Associate PWM device to auxiliary device

[Doug Anderson]

Hi,

On Sat, Dec 9, 2023 at 7:31 AM Uwe Kleine-König
<u.kleine-koenig at pengutronix.de> wrote:
>
> It's the ti_sn65dsi86.pwm auxiliary driver that creates the pwmchip, so
> let the auxiliary device be the parent of the pwm device.
>
> Note that getting a reference to the ti-sn65dsi86's pwm using pwm_get()
> isn't affected by this change as ti_sn65dsi86_add_aux_device() sets the
> auxiliary device's of_node to that of the main device.
>
> Also change PM runtime tracking and diagnostic messages to use that one.
> After enabling runtime PM operation for the auxiliary device, all works
> as expected as parent devices are handled just fine.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> ---
> Changes since v2
> (https://lore.kernel.org/dri-devel/20231209152520.1987483-2-u.kleine-koenig@pengutronix.de):
>
>  - Make use of devm_pm_runtime_enable as suggested by Douglas Anderson
>    in reply to v1 already. (Sorry, missed that while preparing v2 :-\)
>
> Changes since (implicit) v1
> (https://lore.kernel.org/dri-devel/20231127101547.734061-2-u.kleine-koenig@pengutronix.de):
>
>  - Add a call to pm_runtime_enable() for the aux device
>    (tested and diagnosed by Nikita Travkin).
>  - Rebased to yesterday's next, which required some (easy) conflict
>    resolution for commit c9d99c73940e ("drm/bridge: ti-sn65dsi86:
>    Simplify using pm_runtime_resume_and_get()").
>
> Best regards
> Uwe
>
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 16 +++++++++-------
>  1 file changed, 9 insertions(+), 7 deletions(-)

Reviewed-by: Douglas Anderson <dianders at chromium.org>

I'll also note that, via IRC, Steev also confirmed that "on the c630
with the devm_pm.... display works too"

Pushed to drm-misc-next:

eb3f7cbee294 drm/bridge: ti-sn65dsi86: Associate PWM device to auxiliary device