drm/i915: Enable/disable DRRS

Calling enable/disable DRRS when enable/disable DDI are called.
These functions are responsible for setup of drrs data (in enable) and
reset of drrs (in disable).
has_drrs is true when downclock_mode is found and SEAMLESS_DRRS is set in
the VBT. A check has been added for has_drrs in these functions, to make
sure the functions go through only if DRRS will work on the platform with
the attached panel.

V2: [By Ram]: WARN_ON is used when intel_edp_drrs_enable() is called more than
once [Rodrigo]

Signed-off-by: Vandana Kannan <vandana.kannan@intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index f10ec26..ad8b73d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1610,6 +1610,7 @@ static void intel_enable_ddi(struct intel_encoder *intel_encoder)
 
                intel_edp_backlight_on(intel_dp);
                intel_psr_enable(intel_dp);
+               intel_edp_drrs_enable(intel_dp);
        }
 
        if (intel_crtc->config->has_audio) {
@@ -1635,6 +1636,7 @@ static void intel_disable_ddi(struct intel_encoder *intel_encoder)
        if (type == INTEL_OUTPUT_EDP) {
                struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
 
+               intel_edp_drrs_disable(intel_dp);
                intel_psr_disable(intel_dp);
                intel_edp_backlight_off(intel_dp);
        }

diff --cc drivers/gpu/drm/i915/intel_dp.c
Simple merge

diff --cc drivers/gpu/drm/i915/intel_drv.h
Simple merge