Re: [PATCH v2 2/2] drm/rockchip: dw_hdmi: Handle suspend/resume

[Doug Anderson]

Hi,

On Thu, May 16, 2019 at 2:40 PM Douglas Anderson <dianders@xxxxxxxxxxxx> wrote:
>
> On Rockchip rk3288-based Chromebooks when you do a suspend/resume
> cycle:
>
> 1. You lose the ability to detect an HDMI device being plugged in.
>
> 2. If you're using the i2c bus built in to dw_hdmi then it stops
> working.
>
> Let's call the core dw-hdmi's suspend/resume functions to restore
> things.
>
> NOTE: in downstream Chrome OS (based on kernel 3.14) we used the
> "late/early" versions of suspend/resume because we found that the VOP
> was sometimes resuming before dw_hdmi and then calling into us before
> we were fully resumed.  For now I have gone back to the normal
> suspend/resume because I can't reproduce the problems.
>
> Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
> ---
>
> Changes in v2:
> - Add forgotten static (Laurent)
> - No empty stub for suspend (Laurent)
>
>  drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)

Whoops, forgot that I should have carried forward:

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

-Doug