[PATCH v2] drm/msm/dp: only signal audio when disconnected detected at dp_pm_resume

[Stephen Boyd]

Quoting Kuogee Hsieh (2021-09-29 09:17:04)
> Currently there is audio not working problem after system resume from suspend
> if hdmi monitor stay plugged in at DUT. However this problem does not happen
> at normal operation but at a particular test case. The root cause is DP driver
> signal audio with connected state at resume which trigger audio trying to setup
> audio data path through DP main link but failed due to display port is not setup
> and enabled by upper layer framework yet. This patch only have DP driver signal
> audio only when DP is in disconnected state so that audio option shows correct
> state after system resume. DP driver will not signal audio with connected state
> until display enabled executed by upper layer framework where display port is
> setup completed and main link is running.
>
> Changes in V2:
> -- add details commit text
>
> Fixes: 078867ce04ed ("drm/msm/dp: signal audio plugged change at dp_pm_resume")
> Signed-off-by: Kuogee Hsieh <khsieh at codeaurora.org>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>