[PATCH v8 09/14] 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 | 12 ++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c
index e69b28779ac551bde56c9c3d394e784275a9b69e..b90017409a23de2a214ca43d32ba537998ea0f78 100644
--- a/drivers/gpu/drm/i915/display/intel_crtc.c
+++ b/drivers/gpu/drm/i915/display/intel_crtc.c
@@ -28,6 +28,7 @@
 #include "intel_drrs.h"
 #include "intel_dsi.h"
 #include "intel_fifo_underrun.h"
+#include "intel_histogram.h"
 #include "intel_pipe_crc.h"
 #include "intel_psr.h"
 #include "intel_sprite.h"
@@ -211,6 +212,7 @@ 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);
 }
 
@@ -381,6 +383,11 @@ int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
 						BIT(DRM_SCALING_FILTER_DEFAULT) |
 						BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
 
+	intel_histogram_init(crtc);
+	if (drm_crtc_create_histogram_property(&crtc->base,
+					       crtc->histogram->caps))
+		drm_err(&dev_priv->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 7d68d652c1bc91acc68281c4761f688f3779bd79..c38a33ee90aef144931215254f178ba955f998b0 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -93,6 +93,7 @@
 #include "intel_fifo_underrun.h"
 #include "intel_frontbuffer.h"
 #include "intel_hdmi.h"
+#include "intel_histogram.h"
 #include "intel_hotplug.h"
 #include "intel_link_bw.h"
 #include "intel_lvds.h"
@@ -4675,6 +4676,12 @@ static int intel_crtc_atomic_check(struct intel_atomic_state *state,
 	if (ret)
 		return ret;
 
+	if (crtc_state->uapi.histogram_updated) {
+		ret = intel_histogram_atomic_check(crtc);
+		if (ret)
+			return ret;
+	}
+
 	return 0;
 }
 
@@ -7933,6 +7940,11 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state)
 		 */
 		old_crtc_state->dsb_color_vblank = fetch_and_zero(&new_crtc_state->dsb_color_vblank);
 		old_crtc_state->dsb_commit = fetch_and_zero(&new_crtc_state->dsb_commit);
+
+		if (new_crtc_state->uapi.histogram_updated)
+			intel_histogram_update(crtc,
+					       (struct drm_histogram_config *)
+					       new_crtc_state->uapi.histogram_enable->data);
 	}
 
 	/* Underruns don't always raise interrupts, so check manually */

-- 
2.25.1