drm/i915: Correctly enable backlight brightness adjustment via DPCD
intel_dp_aux_enable_backlight() assumed that the register BACKLIGHT_BRIGHTNESS_CONTROL_MODE can only has value 01 (DP_EDP_BACKLIGHT_CONTROL_MODE_PRESET) when initialize. This patch fixed that by handling all cases of that register. Signed-off-by: NPuthikorn Voravootivat <puthik@chromium.org> Reviewed-by: NDhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Signed-off-by: NJani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170511230225.142870-3-puthik@chromium.org
Showing
想要评论请 注册 或 登录