[Intel-gfx] [PATCH 13/23] drm/i915: CHV: Load gamma color correction values

[Shashank Sharma]

DRM color manager allows the driver to showcase its best color
correction capabilities using the cm_crtc_palette_capabilities_property.
Driver loads the no. of coefficients for various color correction
as per the platform, during the init time.

This patch adds no of coefficitents for best gamma color correction
modes possible in CHV, in device info structure, which is:
Gamma(10 bit, CGM HW unit):- 257 coeff
These values will be loaded in cm_crtc_palette_capabilities_property
during the CRTC init section, by color manager's attach function.

Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c            | 2 ++
 drivers/gpu/drm/i915/intel_color_manager.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index bdec64c..04a8e45 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -34,6 +34,7 @@
 #include "i915_drv.h"
 #include "i915_trace.h"
 #include "intel_drv.h"
+#include "intel_color_manager.h"
 
 #include <linux/console.h>
 #include <linux/module.h>
@@ -349,6 +350,7 @@ static const struct intel_device_info intel_cherryview_info = {
 	.gen = 8, .num_pipes = 3,
 	.need_gfx_hws = 1, .has_hotplug = 1,
 	.ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
+	.num_samples_after_ctm = CHV_10BIT_GAMMA_MAX_VALS,
 	.is_valleyview = 1,
 	.display_mmio_offset = VLV_DISPLAY_BASE,
 	GEN_CHV_PIPEOFFSETS,
diff --git a/drivers/gpu/drm/i915/intel_color_manager.h b/drivers/gpu/drm/i915/intel_color_manager.h
index 1a42244..99ef646 100644
--- a/drivers/gpu/drm/i915/intel_color_manager.h
+++ b/drivers/gpu/drm/i915/intel_color_manager.h
@@ -29,3 +29,4 @@
 #include "i915_drv.h"
 
 #define COLOR_STRUCT_VERSION			1
+#define CHV_10BIT_GAMMA_MAX_VALS		257
-- 
1.9.1