drm/i915/glk: Enable pipe CSC

Now that the pre-csc degamma table is set up correctly in Geminilake,
pipe CSC can be enabled without causing a black screen.

v2: Rebase.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170217120630.6143-3-ander.conselvan.de.oliveira@intel.com

2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5443ba8430da..b60373812d34 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3327,6 +3327,7 @@ static void skylake_update_primary_plane(struct drm_plane *plane,
         if (IS_GEMINILAKE(dev_priv)) {
                 I915_WRITE(PLANE_COLOR_CTL(pipe, plane_id),
                            PLANE_COLOR_PIPE_GAMMA_ENABLE |
+                           PLANE_COLOR_PIPE_CSC_ENABLE |
                            PLANE_COLOR_PLANE_GAMMA_DISABLE);
         } else {
                 plane_ctl |=
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index b16a29591803..27e0752d1578 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -224,6 +224,7 @@ skl_update_plane(struct drm_plane *drm_plane,
         if (IS_GEMINILAKE(dev_priv)) {
                 I915_WRITE(PLANE_COLOR_CTL(pipe, plane_id),
                            PLANE_COLOR_PIPE_GAMMA_ENABLE |
+                           PLANE_COLOR_PIPE_CSC_ENABLE |
                            PLANE_COLOR_PLANE_GAMMA_DISABLE);
         } else {
                 plane_ctl |=