[PATCH 02/12] drm: Create Color Management DRM properties

Kausal Malladi
2015-07-03T03:31:37Z

Color Management is an extension to Kernel display framework. It allows
abstraction of hardware color correction and enhancement capabilities by
virtue of DRM properties.

This patch initializes color management framework by :
1. Introducing new pointers in DRM mode_config structure to
carry CTM and Palette color correction properties.
2. Creating these DRM properties in DRM standard properties creation
sequence.

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Kausal Malladi <Kausal.Malladi@intel.com>
---
drivers/gpu/drm/drm_crtc.c | 24 ++++++++++++++++++++++++
include/drm/drm_crtc.h | 6 ++++++
2 files changed, 30 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 2d57fc5..5d12ea9 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1462,6 +1462,30 @@ static int drm_mode_create_standard_properties(struct drm_device *dev)
return -ENOMEM;
dev->mode_config.prop_mode_id = prop;

+ /* Color Management properties */
+ prop = drm_property_create(dev,
+ DRM_MODE_PROP_BLOB | DRM_MODE_PROP_IMMUTABLE,
+ "COLOR_CAPABILITIES", 0);
+ dev->mode_config.prop_color_capabilities = prop;
+
+ prop = drm_property_create(dev,
+ DRM_MODE_PROP_BLOB, "PALETTE_AFTER_CTM", 0);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_palette_after_ctm = prop;
+
+ prop = drm_property_create(dev,
+ DRM_MODE_PROP_BLOB, "PALETTE_BEFORE_CTM", 0);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_palette_before_ctm = prop;
+
+ prop = drm_property_create(dev,
+ DRM_MODE_PROP_BLOB, "CTM", 0);
+ if (!prop)
+ return -ENOMEM;
+ dev->mode_config.prop_ctm = prop;
+
return 0;
}

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 57ca8cc..408d39a 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1178,6 +1178,12 @@ struct drm_mode_config {
struct drm_property *suggested_x_property;
struct drm_property *suggested_y_property;

+ /* Color Management Properties */
+ struct drm_property *prop_color_capabilities;
+ struct drm_property *prop_palette_before_ctm;
+ struct drm_property *prop_palette_after_ctm;
+ struct drm_property *prop_ctm;
+
/* dumb ioctl parameters */
uint32_t preferred_depth, prefer_shadow;