From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Since CHV has the CGM unit we require a custom implementation
of .color_check().
This fixes the computation of gamma_enable as previously we
left it enabled even when were using the CGM gamma instead.
Now we turn off the legacy LUT unless it's actually required.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_color.c | 28 ++++++++++++++++++++++++----
1 file changed, 24 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 3d19b1a7ee95..cb88651f1da4 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -848,6 +848,29 @@ static u32 chv_cgm_mode(const struct intel_crtc_state *crtc_state)
return cgm_mode;
}
+static int chv_color_check(struct intel_crtc_state *crtc_state)
+{
+ int ret;
+
+ ret = check_luts(crtc_state);
+ if (ret)
+ return ret;
+
+ crtc_state->gamma_enable =
+ crtc_state_is_legacy_gamma(crtc_state) &&
+ !crtc_state->c8_planes;
+
+ crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
+
+ crtc_state->cgm_mode = chv_cgm_mode(crtc_state);
+
+ ret = intel_color_add_affected_planes(crtc_state);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
static int _intel_color_check(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
@@ -877,9 +900,6 @@ static int _intel_color_check(struct intel_crtc_state *crtc_state)
crtc_state->csc_mode = 0;
- if (IS_CHERRYVIEW(dev_priv))
- crtc_state->cgm_mode = chv_cgm_mode(crtc_state);
-
if (!crtc_state->gamma_enable ||
crtc_state_is_legacy_gamma(crtc_state))
crtc_state->gamma_mode = GAMMA_MODE_MODE_8BIT;
@@ -917,7 +937,7 @@ void intel_color_init(struct intel_crtc *crtc)
if (HAS_GMCH(dev_priv)) {
if (IS_CHERRYVIEW(dev_priv)) {
- dev_priv->display.color_check = _intel_color_check;
+ dev_priv->display.color_check = chv_color_check;
dev_priv->display.color_commit = i9xx_color_commit;
dev_priv->display.load_luts = cherryview_load_luts;
} else {
--
2.19.2
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