On a mode set, DRM makes the following sequence of calls: * for_each_encoder * bridge mode_fixup * encoder mode_fixup * crtc mode_fixup * for_each_encoder * bridge disable * encoder prepare * bridge post_disable * disable unused encoders * crtc prepare * crtc mode_set * for_each_encoder * encoder mode_set * bridge mode_set * crtc commit * for_each_encoder * bridge pre_enable * encoder commit * bridge enable
dw_hdmi enables the HDMI output in both the bridge mode_set() and also the bridge enable() step. This is duplicated work - we can avoid the setup in mode_set() and just do it in the enable() stage. This simplifies the code a little.
Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk --- drivers/gpu/drm/bridge/dw_hdmi.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c index 578d7362cd65..fbac8386552b 100644 --- a/drivers/gpu/drm/bridge/dw_hdmi.c +++ b/drivers/gpu/drm/bridge/dw_hdmi.c @@ -1389,8 +1389,6 @@ static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge, { struct dw_hdmi *hdmi = bridge->driver_private;
- dw_hdmi_setup(hdmi, mode); - /* Store the display mode for plugin/DKMS poweron events */ memcpy(&hdmi->previous_mode, mode, sizeof(hdmi->previous_mode)); }