drm/msm/mdp5: Add hflip/vflip support to MDP5 planes (v2)

Commit Message

jilai wang July 31, 2015, 2:13 p.m. UTC

MDP5 SSPPs can flip the input source horizontally or vertically.
This change is to add this support to MDP5 planes.
v1: Initial change
v2: Use existing "rotation" property instead of creating msm specific
    properties. In order to be compatiable with legacy non-atomic
    set_property, switch to drm_atomic_helper_plane_set_property
    helper function.

Signed-off-by: Jilai Wang <[e-mail]>
---
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c | 49 ++++++++++++++++++++++++++-----
 1 file changed, 41 insertions(+), 8 deletions(-)

Patch

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
index 1fbb17d..ec5b24c6 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
@@ -88,6 +88,26 @@  static const struct drm_prop_enum_list premultiplied_prop_enum_list[] = {
 	{ 1, "true" },
 };
 
+static void mdp5_plane_install_rotation_property(struct drm_device *dev,
+		struct drm_plane *plane)
+{
+	struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
+
+	if (!(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP) &&
+		!(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP))
+		return;
+
+	if (!dev->mode_config.rotation_property)
+		dev->mode_config.rotation_property =
+			drm_mode_create_rotation_property(dev,
+			BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y));
+
+	if (dev->mode_config.rotation_property)
+		drm_object_attach_property(&plane->base,
+			dev->mode_config.rotation_property,
+			0);
+}
+
 /* helper to install properties which are common to planes and crtcs */
 void mdp5_plane_install_properties(struct drm_plane *plane,
 		struct drm_mode_object *obj)
@@ -125,6 +145,8 @@  void mdp5_plane_install_properties(struct drm_plane *plane,
 	INSTALL_RANGE_PROPERTY(alpha, ALPHA, 0, 255, 255);
 	INSTALL_ENUM_PROPERTY(premultiplied, PREMULTIPLIED, 0);
 
+	mdp5_plane_install_rotation_property(dev, plane);
+
 #undef INSTALL_RANGE_PROPERTY
 #undef INSTALL_ENUM_PROPERTY
 #undef INSTALL_PROPERTY
@@ -160,13 +182,6 @@  done:
 #undef SET_PROPERTY
 }
 
-static int mdp5_plane_set_property(struct drm_plane *plane,
-		struct drm_property *property, uint64_t val)
-{
-	return mdp5_plane_atomic_set_property(plane, plane->state, property,
-		val);
-}
-
 static int mdp5_plane_atomic_get_property(struct drm_plane *plane,
 		const struct drm_plane_state *state,
 		struct drm_property *property, uint64_t *val)
@@ -254,7 +269,7 @@  static const struct drm_plane_funcs mdp5_plane_funcs = {
 		.update_plane = drm_atomic_helper_update_plane,
 		.disable_plane = drm_atomic_helper_disable_plane,
 		.destroy = mdp5_plane_destroy,
-		.set_property = mdp5_plane_set_property,
+		.set_property = drm_atomic_helper_plane_set_property,
 		.atomic_set_property = mdp5_plane_atomic_set_property,
 		.atomic_get_property = mdp5_plane_atomic_get_property,
 		.reset = mdp5_plane_reset,
@@ -290,6 +305,7 @@  static int mdp5_plane_atomic_check(struct drm_plane *plane,
 	struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 	struct drm_plane_state *old_state = plane->state;
 	const struct mdp_format *format;
+	bool vflip, hflip;
 
 	DBG("%s: check (%d -> %d)", mdp5_plane->name,
 			plane_enabled(old_state), plane_enabled(state));
@@ -314,6 +330,16 @@  static int mdp5_plane_atomic_check(struct drm_plane *plane,
 
 			return -EINVAL;
 		}
+
+		hflip = !!(state->rotation & BIT(DRM_REFLECT_X));
+		vflip = !!(state->rotation & BIT(DRM_REFLECT_Y));
+		if ((vflip && !(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP)) ||
+			(hflip && !(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP))) {
+			dev_err(plane->dev->dev,
+				"Pipe doesn't support flip\n");
+
+			return -EINVAL;
+		}
 	}
 
 	if (plane_enabled(state) && plane_enabled(old_state)) {
@@ -565,6 +591,7 @@  static int mdp5_plane_mode_set(struct drm_plane *plane,
 		uint32_t src_w, uint32_t src_h)
 {
 	struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
+	struct drm_plane_state *pstate = plane->state;
 	struct mdp5_kms *mdp5_kms = get_kms(plane);
 	struct device *dev = mdp5_kms->dev->dev;
 	enum mdp5_pipe pipe = mdp5_plane->pipe;
@@ -574,6 +601,7 @@  static int mdp5_plane_mode_set(struct drm_plane *plane,
 	uint32_t phasex_step[2] = {0,}, phasey_step[2] = {0,};
 	uint32_t hdecm = 0, vdecm = 0;
 	uint32_t pix_format;
+	bool vflip, hflip;
 	unsigned long flags;
 	int ret;
 
@@ -634,6 +662,9 @@  static int mdp5_plane_mode_set(struct drm_plane *plane,
 		config |= get_scaley_config(src_h, crtc_h);
 	}
 
+	hflip = !!(pstate->rotation & BIT(DRM_REFLECT_X));
+	vflip = !!(pstate->rotation & BIT(DRM_REFLECT_Y));
+
 	spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 
 	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe),
@@ -675,6 +706,8 @@  static int mdp5_plane_mode_set(struct drm_plane *plane,
 			MDP5_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
 
 	mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_OP_MODE(pipe),
+			(hflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_LR : 0) |
+			(vflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_UD : 0) |
 			MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS));
 
 	/* not using secure mode: */