Some panel will default to zero brightness when turning the panel off and on again. This patch stores last brightness level before turning off and set them back when panel is turning on.
Signed-off-by: Puthikorn Voravootivat <[email protected]> --- drivers/gpu/drm/i915/intel_dp_aux_backlight.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c index ae1b6fe67feb..f99cf0a6ae44 100644 --- a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c +++ b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c @@ -95,6 +95,7 @@ intel_dp_aux_set_backlight(struct intel_connector *connector, u32 level) DRM_DEBUG_KMS("Failed to write aux backlight level\n"); return; } + connector->panel.backlight.level = level; } /* @@ -150,6 +151,7 @@ static void intel_dp_aux_enable_backlight(struct intel_connector *connector) drm_dp_dpcd_writeb(&intel_dp->aux, DP_EDP_BACKLIGHT_MODE_SET_REGISTER, new_dpcd_buf); } + intel_dp_aux_set_backlight(connector, connector->panel.backlight.level); } static void intel_dp_aux_disable_backlight(struct intel_connector *connector) -- 2.12.2.816.g2cccc81164-goog _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
