drm/i915: Add a .color_post_update() hook

We're going to need stuff after the color management
register latching has happened. Add a corresponding hook.

Cc: <stable@vger.kernel.org> #v5.19+
Cc: Manasi Navare <navaremanasi@google.com>
Cc: Drew Davenport <ddavenport@chromium.org>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320095438.17328-4-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index a503d82..833db35 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -46,6 +46,11 @@ struct intel_color_funcs {
         * registers involved with the same commit.
         */
        void (*color_commit_arm)(const struct intel_crtc_state *crtc_state);
+       /*
+        * Perform any extra tasks needed after all the
+        * double buffered registers have been latched.
+        */
+       void (*color_post_update)(const struct intel_crtc_state *crtc_state);
        /*
         * Load LUTs (and other single buffered color management
         * registers). Will (hopefully) be called during the vblank
@@ -1414,6 +1419,14 @@ void intel_color_commit_arm(const struct intel_crtc_state *crtc_state)
        i915->display.funcs.color->color_commit_arm(crtc_state);
 }
 
+void intel_color_post_update(const struct intel_crtc_state *crtc_state)
+{
+       struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
+
+       if (i915->display.funcs.color->color_post_update)
+               i915->display.funcs.color->color_post_update(crtc_state);
+}
+
 void intel_color_prepare_commit(struct intel_crtc_state *crtc_state)
 {
        struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);

diff --git a/drivers/gpu/drm/i915/display/intel_color.h b/drivers/gpu/drm/i915/display/intel_color.h
index d620b5b..8002492 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_color.h
+++ b/drivers/gpu/drm/i915/display/intel_color.h
@@ -21,6 +21,7 @@ void intel_color_prepare_commit(struct intel_crtc_state *crtc_state);
 void intel_color_cleanup_commit(struct intel_crtc_state *crtc_state);
 void intel_color_commit_noarm(const struct intel_crtc_state *crtc_state);
 void intel_color_commit_arm(const struct intel_crtc_state *crtc_state);
+void intel_color_post_update(const struct intel_crtc_state *crtc_state);
 void intel_color_load_luts(const struct intel_crtc_state *crtc_state);
 void intel_color_get_config(struct intel_crtc_state *crtc_state);
 bool intel_color_lut_equal(const struct intel_crtc_state *crtc_state,

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e044b97..c91dff8 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1115,6 +1115,9 @@ static void intel_post_plane_update(struct intel_atomic_state *state,
        if (needs_cursorclk_wa(old_crtc_state) &&
            !needs_cursorclk_wa(new_crtc_state))
                icl_wa_cursorclkgating(dev_priv, pipe, false);
+
+       if (intel_crtc_needs_color_update(new_crtc_state))
+               intel_color_post_update(new_crtc_state);
 }
 
 static void intel_crtc_enable_flip_done(struct intel_atomic_state *state,