[Intel-gfx] [PATCH 2/6] drm/i915/display: global histogram irq handler

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

With the enablement of global histogram, upon generation of histogram,
an interrupt is triggered. This patch handles the irq.

Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
---
 drivers/gpu/drm/i915/i915_irq.c | 6 +++++-
 drivers/gpu/drm/i915/i915_reg.h | 5 +++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index e28bfb5f7347..d72fb6d9282d 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -43,6 +43,7 @@
 #include "display/intel_hotplug.h"
 #include "display/intel_lpe_audio.h"
 #include "display/intel_psr.h"
+#include "display/intel_global_hist.h"
 
 #include "gt/intel_breadcrumbs.h"
 #include "gt/intel_gt.h"
@@ -2765,6 +2766,9 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl)
 		ret = IRQ_HANDLED;
 		intel_uncore_write(&dev_priv->uncore, GEN8_DE_PIPE_IIR(pipe), iir);
 
+		if (iir & GEN9_PIPE_GLOBAL_HIST_EVENT)
+			intel_global_hist_irq_handler(dev_priv, pipe);
+
 		if (iir & GEN8_PIPE_VBLANK)
 			intel_handle_vblank(dev_priv, pipe);
 
@@ -5043,7 +5047,7 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv)
 	struct intel_uncore *uncore = &dev_priv->uncore;
 
 	u32 de_pipe_masked = gen8_de_pipe_fault_mask(dev_priv) |
-		GEN8_PIPE_CDCLK_CRC_DONE;
+		GEN8_PIPE_CDCLK_CRC_DONE | GEN9_PIPE_GLOBAL_HIST_EVENT;
 	u32 de_pipe_enables;
 	u32 de_port_masked = gen8_de_port_aux_mask(dev_priv);
 	u32 de_port_enables;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 94d0c8d14d43..546207ac4859 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3887,7 +3887,7 @@
 #define   PIPE_HOTPLUG_INTERRUPT_ENABLE		(1UL << 26)
 #define   PIPE_VSYNC_INTERRUPT_ENABLE		(1UL << 25)
 #define   PIPE_DISPLAY_LINE_COMPARE_ENABLE	(1UL << 24)
-#define   PIPE_DPST_EVENT_ENABLE		(1UL << 23)
+#define   PIPE_GLOBAL_HIST_EVENT_ENABLE		(1UL << 23)
 #define   SPRITE0_FLIP_DONE_INT_EN_VLV		(1UL << 22)
 #define   PIPE_LEGACY_BLC_EVENT_ENABLE		(1UL << 22)
 #define   PIPE_ODD_FIELD_INTERRUPT_ENABLE	(1UL << 21)
@@ -3910,7 +3910,7 @@
 #define   PIPE_HOTPLUG_INTERRUPT_STATUS		(1UL << 10)
 #define   PIPE_VSYNC_INTERRUPT_STATUS		(1UL << 9)
 #define   PIPE_DISPLAY_LINE_COMPARE_STATUS	(1UL << 8)
-#define   PIPE_DPST_EVENT_STATUS		(1UL << 7)
+#define   PIPE_GLOBAL_HIST_EVENT_STATUS		(1UL << 7)
 #define   PIPE_A_PSR_STATUS_VLV			(1UL << 6)
 #define   PIPE_LEGACY_BLC_EVENT_STATUS		(1UL << 6)
 #define   PIPE_ODD_FIELD_INTERRUPT_STATUS	(1UL << 5)
@@ -5815,6 +5815,7 @@
 #define  GEN8_PIPE_VSYNC		(1 << 1)
 #define  GEN8_PIPE_VBLANK		(1 << 0)
 #define  GEN9_PIPE_CURSOR_FAULT		(1 << 11)
+#define  GEN9_PIPE_GLOBAL_HIST_EVENT	(1 << 12)
 #define  GEN11_PIPE_PLANE7_FAULT	(1 << 22)
 #define  GEN11_PIPE_PLANE6_FAULT	(1 << 21)
 #define  GEN11_PIPE_PLANE5_FAULT	(1 << 20)
-- 
2.25.1