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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-04-12 17:20:06 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-04-18 08:56:29 +0200
commit2e38178e23e63b193654af9a11bb4a3cb4b999a5 (patch)
treea60d3031c91ce2484bebb162d9bc9bf55fd6af2a /include/drm/drm_crtc.h
parentccb92b945e9ac718f1c7b37216eaae02ccde032f (diff)
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drm/doc: Interlink color manager docs better
Motivated by a request from Eric. v2: Take in suggestions from Lionel Cc: Eric Anholt <eric@anholt.net> Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170412152006.12233-1-daniel.vetter@ffwll.ch
Diffstat (limited to 'include/drm/drm_crtc.h')
-rw-r--r--include/drm/drm_crtc.h34
1 files changed, 28 insertions, 6 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index a8176a836e25..adf4e91a9399 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -93,11 +93,6 @@ struct drm_plane_helper_funcs;
* @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
* @mode: current mode timings
* @mode_blob: &drm_property_blob for @mode
- * @degamma_lut: Lookup table for converting framebuffer pixel data
- * before apply the conversion matrix
- * @ctm: Transformation matrix
- * @gamma_lut: Lookup table for converting pixel data after the
- * conversion matrix
* @state: backpointer to global drm_atomic_state
*
* Note that the distinction between @enable and @active is rather subtile:
@@ -144,9 +139,30 @@ struct drm_crtc_state {
/* blob property to expose current mode to atomic userspace */
struct drm_property_blob *mode_blob;
- /* blob property to expose color management to userspace */
+ /**
+ * @degamma_lut:
+ *
+ * Lookup table for converting framebuffer pixel data before apply the
+ * color conversion matrix @ctm. See drm_crtc_enable_color_mgmt(). The
+ * blob (if not NULL) is an array of &struct drm_color_lut.
+ */
struct drm_property_blob *degamma_lut;
+
+ /**
+ * @ctm:
+ *
+ * Color transformation matrix. See drm_crtc_enable_color_mgmt(). The
+ * blob (if not NULL) is a &struct drm_color_ctm.
+ */
struct drm_property_blob *ctm;
+
+ /**
+ * @gamma_lut:
+ *
+ * Lookup table for converting pixel data after the color conversion
+ * matrix @ctm. See drm_crtc_enable_color_mgmt(). The blob (if not
+ * NULL) is an array of &struct drm_color_lut.
+ */
struct drm_property_blob *gamma_lut;
/**
@@ -313,6 +329,12 @@ struct drm_crtc_funcs {
*
* This callback is optional.
*
+ * Atomic drivers who want to support gamma tables should implement the
+ * atomic color management support, enabled by calling
+ * drm_crtc_enable_color_mgmt(), which then supports the legacy gamma
+ * interface through the drm_atomic_helper_legacy_gamma_set()
+ * compatibility implementation.
+ *
* NOTE:
*
* Drivers that support gamma tables and also fbdev emulation through