[PATCH v2 4/7] drm/mediatek: Plumb supported rotation values from components to plane init

[Sean Paul <sean@poorly.run>]

From: Sean Paul <seanpaul@chromium.org>

This patch adds the ability for components to expose supported rotations
which will be exposed to userspace via a plane rotation property.

No functional changes in this patch.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
---
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c     |  4 +++-
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 10 ++++++++++
 drivers/gpu/drm/mediatek/mtk_drm_plane.c    | 12 +++++++++++-
 drivers/gpu/drm/mediatek/mtk_drm_plane.h    |  4 +++-
 4 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 04e7e4bdbdb5..f80a8ba75977 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -600,13 +600,15 @@ static int mtk_drm_crtc_init_comp_planes(struct drm_device *drm_dev,
 					 int comp_idx, int pipe)
 {
 	int num_planes = mtk_drm_crtc_num_comp_planes(mtk_crtc, comp_idx);
+	struct mtk_ddp_comp *comp = mtk_crtc->ddp_comp[comp_idx];
 	int i, ret;
 
 	for (i = 0; i < num_planes; i++) {
 		ret = mtk_plane_init(drm_dev,
 				&mtk_crtc->planes[mtk_crtc->layer_nr],
 				BIT(pipe),
-				mtk_drm_crtc_plane_type(mtk_crtc->layer_nr));
+				mtk_drm_crtc_plane_type(mtk_crtc->layer_nr),
+				mtk_ddp_comp_supported_rotations(comp));
 		if (ret)
 			return ret;
 
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
index 3de371e28bdf..2f1e9e75b8da 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h
@@ -77,6 +77,7 @@ struct mtk_ddp_comp_funcs {
 	void (*stop)(struct mtk_ddp_comp *comp);
 	void (*enable_vblank)(struct mtk_ddp_comp *comp, struct drm_crtc *crtc);
 	void (*disable_vblank)(struct mtk_ddp_comp *comp);
+	unsigned int (*supported_rotations)(struct mtk_ddp_comp *comp);
 	unsigned int (*layer_nr)(struct mtk_ddp_comp *comp);
 	void (*layer_on)(struct mtk_ddp_comp *comp, unsigned int idx);
 	void (*layer_off)(struct mtk_ddp_comp *comp, unsigned int idx);
@@ -133,6 +134,15 @@ static inline void mtk_ddp_comp_disable_vblank(struct mtk_ddp_comp *comp)
 		comp->funcs->disable_vblank(comp);
 }
 
+static inline
+unsigned int mtk_ddp_comp_supported_rotations(struct mtk_ddp_comp *comp)
+{
+	if (comp->funcs && comp->funcs->supported_rotations)
+		return comp->funcs->supported_rotations(comp);
+
+	return 0;
+}
+
 static inline unsigned int mtk_ddp_comp_layer_nr(struct mtk_ddp_comp *comp)
 {
 	if (comp->funcs && comp->funcs->layer_nr)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index 58b02fffe321..cd7c97eb7ee6 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -138,6 +138,7 @@ static void mtk_plane_atomic_update(struct drm_plane *plane,
 	state->pending.y = plane->state->dst.y1;
 	state->pending.width = drm_rect_width(&plane->state->dst);
 	state->pending.height = drm_rect_height(&plane->state->dst);
+	state->pending.rotation = plane->state->rotation;
 	wmb(); /* Make sure the above parameters are set before update */
 	state->pending.dirty = true;
 }
@@ -160,7 +161,8 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
 };
 
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
-		   unsigned long possible_crtcs, enum drm_plane_type type)
+		   unsigned long possible_crtcs, enum drm_plane_type type,
+		   unsigned int supported_rotations)
 {
 	int err;
 
@@ -172,6 +174,14 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		return err;
 	}
 
+	if (supported_rotations & ~DRM_MODE_ROTATE_0) {
+		err = drm_plane_create_rotation_property(plane,
+							 DRM_MODE_ROTATE_0,
+							 supported_rotations);
+		if (err)
+			DRM_INFO("Create rotation property failed\n");
+	}
+
 	drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
 
 	return 0;
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
index 6f842df722c7..760885e35b27 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h
@@ -20,6 +20,7 @@ struct mtk_plane_pending_state {
 	unsigned int			y;
 	unsigned int			width;
 	unsigned int			height;
+	unsigned int			rotation;
 	bool				dirty;
 };
 
@@ -35,6 +36,7 @@ to_mtk_plane_state(struct drm_plane_state *state)
 }
 
 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
-		   unsigned long possible_crtcs, enum drm_plane_type type);
+		   unsigned long possible_crtcs, enum drm_plane_type type,
+		   unsigned int supported_rotations);
 
 #endif
-- 
Sean Paul, Software Engineer, Google / Chromium OS


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