drm: samsung: add rcd_id property

Add property to report rcd id.

Bug: 227584297
Test: get rcd id in hwc
Change-Id: I0c38eaa310f9b18c946805a7904e56f123dd2ab7
Signed-off-by: Weizhung Ding <weizhungding@google.com>

2 files changed, 27 insertions, 0 deletions

diff --git a/samsung/exynos_drm_crtc.c b/samsung/exynos_drm_crtc.c
index 6a5987a..eff9eb8 100644
--- a/samsung/exynos_drm_crtc.c
+++ b/samsung/exynos_drm_crtc.c
@@ -624,6 +624,8 @@ static int exynos_drm_crtc_get_property(struct drm_crtc *crtc,
 			dma_buf_fd(exynos_crtc_state->cgc_gem->dma_buf, 0) : 0;
 	else if (property == exynos_crtc->props.expected_present_time)
 		*val = exynos_crtc_state->expected_present_time;
+	else if (property == exynos_crtc->props.rcd_plane_id)
+		*val = decon->rcd->plane.base.base.id;
 	else
 		return -EINVAL;
 
@@ -881,6 +883,23 @@ exynos_drm_crtc_create_partial_property(struct exynos_drm_crtc *exynos_crtc)
 	return 0;
 }
 
+static int exynos_drm_crtc_create_rcd_id_property(struct exynos_drm_crtc *exynos_crtc,
+						  u32 rcd_plane_id)
+{
+	struct drm_crtc *crtc = &exynos_crtc->base;
+	struct drm_property *prop;
+
+	prop = drm_property_create_range(crtc->dev, DRM_MODE_PROP_IMMUTABLE, "rcd_plane_id", 0,
+					 UINT_MAX);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&crtc->base, prop, rcd_plane_id);
+	exynos_crtc->props.rcd_plane_id = prop;
+
+	return 0;
+}
+
 struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 					struct drm_plane *plane,
 					enum exynos_drm_output_type type,
@@ -972,6 +991,13 @@ struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
 			goto err_crtc;
 	}
 
+	if (decon->rcd) {
+		ret = exynos_drm_crtc_create_rcd_id_property(exynos_crtc,
+							     decon->rcd->plane.base.base.id);
+		if (ret)
+			goto err_crtc;
+	}
+
 	ret = exynos_drm_crtc_create_partial_property(exynos_crtc);
 	if (ret)
 		goto err_crtc;
diff --git a/samsung/exynos_drm_drv.h b/samsung/exynos_drm_drv.h
index 3a56368..88ea0b8 100644
--- a/samsung/exynos_drm_drv.h
+++ b/samsung/exynos_drm_drv.h
@@ -318,6 +318,7 @@ struct exynos_drm_crtc {
 		struct drm_property *partial;
 		struct drm_property *cgc_lut_fd;
 		struct drm_property *expected_present_time;
+		struct drm_property *rcd_plane_id;
 	} props;
 	u8 active_state;
 	u32 rcd_plane_mask;