drm/msm/dp: Add basic PSR support for eDP
Add support for basic panel self refresh (PSR) feature for eDP. Add a new interface to set PSR state in the sink from DPU. Program the eDP controller to issue PSR enter and exit SDP to the sink. Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com> Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/524734/ Link: https://lore.kernel.org/r/1677774797-31063-10-git-send-email-quic_vpolimer@quicinc.comSigned-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
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