From 3bc965f15e96b51c7e683eaf72e93a2dc6dac471 Mon Sep 17 00:00:00 2001 From: Sankeerth Billakanti Date: Mon, 25 Apr 2022 17:14:32 +0530 Subject: drm/msm/dp: Support the eDP modes given by panel The eDP controller does not have a reliable way keep panel powered on to read the sink capabilities. So, the controller driver cannot validate if a mode can be supported by the source. We will rely on the panel driver to populate only the supported modes for now. Signed-off-by: Sankeerth Billakanti Reviewed-by: Douglas Anderson Reviewed-by: Stephen Boyd Patchwork: https://patchwork.freedesktop.org/patch/483313/ Link: https://lore.kernel.org/r/1650887072-16652-5-git-send-email-quic_sbillaka@quicinc.com Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/dp/dp_display.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'drivers/gpu/drm/msm') diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 0e52c0ab2174..c38832304353 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -980,6 +980,14 @@ enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge, return -EINVAL; } + /* + * The eDP controller currently does not have a reliable way of + * enabling panel power to read sink capabilities. So, we rely + * on the panel driver to populate only supported modes for now. + */ + if (dp->is_edp) + return MODE_OK; + if (mode->clock > DP_MAX_PIXEL_CLK_KHZ) return MODE_BAD; -- cgit v1.2.3