[PATCH v3 05/21] drm: Introduce DRM_CAP_CRTC_COLOR_PIPELINE

[Ariel D'Alessandro]

From: "Nícolas F. R. A. Prado" <nfraprado at collabora.com>

Add a new cap that drivers can set to signal they support CRTC (a.k.a.
post-blend) color pipelines.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>
Co-developed-by: Ariel D'Alessandro <ariel.dalessandro at collabora.com>
Signed-off-by: Ariel D'Alessandro <ariel.dalessandro at collabora.com>
Reviewed-by: Louis Chauvet <louis.chauvet at bootlin.com>
---
 drivers/gpu/drm/drm_ioctl.c | 3 +++
 include/drm/drm_drv.h       | 6 ++++++
 include/uapi/drm/drm.h      | 6 ++++++
 3 files changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index ff193155129e7..2884075660ddd 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -304,6 +304,9 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_
 		req->value = drm_core_check_feature(dev, DRIVER_ATOMIC) &&
 			     dev->mode_config.async_page_flip;
 		break;
+	case DRM_CAP_CRTC_COLOR_PIPELINE:
+		req->value = drm_core_check_feature(dev, DRIVER_CRTC_COLOR_PIPELINE);
+		break;
 	default:
 		return -EINVAL;
 	}
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 42fc085f986de..2a57c50b4223e 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -122,6 +122,12 @@ enum drm_driver_feature {
 	 * the cursor planes to work correctly).
 	 */
 	DRIVER_CURSOR_HOTSPOT           = BIT(9),
+	/**
+	 * @DRIVER_CRTC_COLOR_PIPELINE:
+	 *
+	 * Driver supports CRTC (post-blend) color pipeline.
+	 */
+	DRIVER_CRTC_COLOR_PIPELINE	= BIT(10),
 
 	/* IMPORTANT: Below are all the legacy flags, add new ones above. */
 
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 27cc159c1d275..d726828bdf408 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -812,6 +812,12 @@ struct drm_gem_change_handle {
  * commits.
  */
 #define DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP	0x15
+/**
+ * DRM_CAP_CRTC_COLOR_PIPELINE
+ *
+ * If set to 1, the driver supports CRTC (post-blend) color pipelines.
+ */
+#define DRM_CAP_CRTC_COLOR_PIPELINE	0x16
 
 /* DRM_IOCTL_GET_CAP ioctl argument type */
 struct drm_get_cap {

-- 
2.51.0