[Intel-gfx] [PATCH 3/6] drm/i915/display: global histogram restrictions

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

For global histogram the panel should be edp and should have pwm based
backlight controller. Flags are updated accordingly.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/i915/display/intel_modeset_setup.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_modeset_setup.c b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
index cd21b0ddbabb..975d6bdb59f3 100644
--- a/drivers/gpu/drm/i915/display/intel_modeset_setup.c
+++ b/drivers/gpu/drm/i915/display/intel_modeset_setup.c
@@ -17,12 +17,14 @@
 #include "intel_crtc_state_dump.h"
 #include "intel_ddi.h"
 #include "intel_de.h"
+#include "intel_dp.h"
 #include "intel_display.h"
 #include "intel_display_power.h"
 #include "intel_display_types.h"
 #include "intel_modeset_setup.h"
 #include "intel_pch_display.h"
 #include "intel_pm.h"
+#include "intel_global_hist.h"
 
 static void intel_crtc_disable_noatomic(struct intel_crtc *crtc,
 					struct drm_modeset_acquire_ctx *ctx)
@@ -309,6 +311,7 @@ static void intel_sanitize_encoder(struct intel_encoder *encoder)
 	struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
 	struct intel_crtc_state *crtc_state = crtc ?
 		to_intel_crtc_state(crtc->base.state) : NULL;
+	struct intel_panel *panel;
 
 	/*
 	 * We need to check both for a crtc link (meaning that the encoder is
@@ -376,6 +379,15 @@ static void intel_sanitize_encoder(struct intel_encoder *encoder)
 
 	if (HAS_DDI(i915))
 		intel_ddi_sanitize_encoder_pll_mapping(encoder);
+
+	/* validate the global hist struct elements */
+	if (intel_dp_is_port_edp(i915, encoder->port)) {
+		crtc->global_hist->has_edp = true;
+		panel = &connector->panel;
+		if (panel->backlight.present == true)
+			crtc->global_hist->has_pwm = true;
+	}
+
 }
 
 /* FIXME read out full plane state for all planes */
-- 
2.25.1