[PATCH v9 14/20] drm/i915/histogram: Hook i915 histogram with drm histogram

[Arun R Murthy <arun.r.murthy@intel.com>]

Handle histogram caps and histogram config property in i915 driver. Fill
the histogram hardware capability and act upon the histogram config
property to enable/disable histogram in i915.

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_crtc.c    |  7 +++++++
 drivers/gpu/drm/i915/display/intel_display.c | 15 +++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index 2fe645860385df9b64aedc408dc5908b475a0b40..036a347d7540d33faa3f7d7588dc860e6b717a56 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -17,6 +17,7 @@
 #include "icl_dsi.h"
 #include "intel_atomic.h"
 #include "intel_color.h"
+#include "intel_color_pipeline.h"
 #include "intel_crtc.h"
 #include "intel_cursor.h"
 #include "intel_display_debugfs.h"
@@ -26,6 +27,7 @@
 #include "intel_drrs.h"
 #include "intel_dsi.h"
 #include "intel_fifo_underrun.h"
+#include "intel_histogram.h"
 #include "intel_parent.h"
 #include "intel_pipe_crc.h"
 #include "intel_plane.h"
@@ -215,6 +217,7 @@ static struct intel_crtc *intel_crtc_alloc(void)
 static void intel_crtc_free(struct intel_crtc *crtc)
 {
 	intel_crtc_destroy_state(&crtc->base, crtc->base.state);
+	intel_histogram_finish(crtc);
 	kfree(crtc);
 }
 
@@ -387,6 +390,10 @@ int intel_crtc_init(struct intel_display *display, enum pipe pipe)
 						BIT(DRM_SCALING_FILTER_DEFAULT) |
 						BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
 
+	intel_histogram_init(crtc);
+	if (intel_color_pipeline_crtc_init(&crtc->base))
+		drm_err(display->drm, "Failed to initialize histogram properties\n");
+
 	intel_color_crtc_init(crtc);
 	intel_drrs_crtc_init(crtc);
 	intel_crtc_crc_init(crtc);
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index e5ce47efc809604cf6f7f01bdc9c679d608be3ef..191a830009e78a31e1ad3d9ca8e0596e1a1ff71e 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -99,6 +99,7 @@
 #include "intel_flipq.h"
 #include "intel_frontbuffer.h"
 #include "intel_hdmi.h"
+#include "intel_histogram.h"
 #include "intel_hotplug.h"
 #include "intel_link_bw.h"
 #include "intel_lt_phy.h"
@@ -4252,6 +4253,7 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	struct intel_display *display = to_intel_display(crtc);
 	struct intel_crtc_state *crtc_state =
 		intel_atomic_get_new_crtc_state(state, crtc);
+	struct drm_colorop *colorop = crtc_state->uapi.color_pipeline;
 	int ret;
 
 	if (DISPLAY_VER(display) < 5 && !display->platform.g4x &&
@@ -4313,6 +4315,12 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	if (ret)
 		return ret;
 
+	if (colorop->state->histogram_updated) {
+		ret = intel_histogram_atomic_check(crtc);
+		if (ret)
+			return ret;
+	}
+
 	return 0;
 }
 
@@ -7547,6 +7555,8 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 	intel_dbuf_post_plane_update(state);
 
 	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+		struct drm_colorop *colorop = new_crtc_state->uapi.color_pipeline;
+
 		intel_post_plane_update(state, crtc);
 
 		intel_modeset_put_crtc_power_domains(crtc, &put_domains[crtc->pipe]);
@@ -7564,6 +7574,11 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 		 */
 		old_crtc_state->dsb_color = fetch_and_zero(&new_crtc_state->dsb_color);
 		old_crtc_state->dsb_commit = fetch_and_zero(&new_crtc_state->dsb_commit);
+
+		if (colorop->state->histogram_updated)
+			intel_histogram_update(crtc,
+					       (struct drm_histogram_config *)
+					       colorop->state->histogram_enable->data);
 	}
 
 	/* Underruns don't always raise interrupts, so check manually */

-- 
2.25.1