[PATCH 2/2] drm/msm/mdp5: Add hflip/vflip support to MDP5 planes

[Jilai Wang]

MDP5 SSPPs can flip the input source horizontally or vertically.
This change is to support this feature by adding vflip/hflip properties
to MDP5 planes.

Signed-off-by: Jilai Wang <jilaiw at codeaurora.org>
---
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h   |  2 ++
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c | 25 +++++++++++++++++++++++++
 drivers/gpu/drm/msm/msm_drv.h             |  2 ++
 3 files changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
index 8542b30..93545ec 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.h
@@ -74,6 +74,8 @@ struct mdp5_plane_state {
 	uint8_t premultiplied;
 	uint8_t zpos;
 	uint8_t alpha;
+	uint8_t hflip;
+	uint8_t vflip;
 
 	/* assigned by crtc blender */
 	enum mdp_mixer_stage_id stage;
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
index 1fbb17d..edd20025 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
@@ -88,6 +88,16 @@ static const struct drm_prop_enum_list premultiplied_prop_enum_list[] = {
 	{ 1, "true" },
 };
 
+static const struct drm_prop_enum_list hflip_prop_enum_list[] = {
+	{ 0, "off" },
+	{ 1, "on" },
+};
+
+static const struct drm_prop_enum_list vflip_prop_enum_list[] = {
+	{ 0, "off" },
+	{ 1, "on" },
+};
+
 /* 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)
@@ -95,6 +105,7 @@ void mdp5_plane_install_properties(struct drm_plane *plane,
 	struct drm_device *dev = plane->dev;
 	struct msm_drm_private *dev_priv = dev->dev_private;
 	struct drm_property *prop;
+	struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 
 #define INSTALL_PROPERTY(name, NAME, init_val, fnc, ...) do { \
 		prop = dev_priv->plane_property[PLANE_PROP_##NAME]; \
@@ -125,6 +136,11 @@ void mdp5_plane_install_properties(struct drm_plane *plane,
 	INSTALL_RANGE_PROPERTY(alpha, ALPHA, 0, 255, 255);
 	INSTALL_ENUM_PROPERTY(premultiplied, PREMULTIPLIED, 0);
 
+	if (mdp5_plane->caps & MDP_PIPE_CAP_HFLIP)
+		INSTALL_ENUM_PROPERTY(hflip, HFLIP, 0);
+	if (mdp5_plane->caps & MDP_PIPE_CAP_VFLIP)
+		INSTALL_ENUM_PROPERTY(vflip, VFLIP, 0);
+
 #undef INSTALL_RANGE_PROPERTY
 #undef INSTALL_ENUM_PROPERTY
 #undef INSTALL_PROPERTY
@@ -152,6 +168,8 @@ static int mdp5_plane_atomic_set_property(struct drm_plane *plane,
 	SET_PROPERTY(zpos, ZPOS, uint8_t);
 	SET_PROPERTY(alpha, ALPHA, uint8_t);
 	SET_PROPERTY(premultiplied, PREMULTIPLIED, uint8_t);
+	SET_PROPERTY(hflip, HFLIP, uint8_t);
+	SET_PROPERTY(vflip, VFLIP, uint8_t);
 
 	dev_err(dev->dev, "Invalid property\n");
 	ret = -EINVAL;
@@ -189,6 +207,8 @@ static int mdp5_plane_atomic_get_property(struct drm_plane *plane,
 	GET_PROPERTY(zpos, ZPOS, uint8_t);
 	GET_PROPERTY(alpha, ALPHA, uint8_t);
 	GET_PROPERTY(premultiplied, PREMULTIPLIED, uint8_t);
+	GET_PROPERTY(hflip, HFLIP, uint8_t);
+	GET_PROPERTY(vflip, VFLIP, uint8_t);
 
 	dev_err(dev->dev, "Invalid property\n");
 	ret = -EINVAL;
@@ -210,6 +230,8 @@ static void mdp5_plane_reset(struct drm_plane *plane)
 	/* assign default blend parameters */
 	mdp5_state->alpha = 255;
 	mdp5_state->premultiplied = 0;
+	mdp5_state->hflip = 0;
+	mdp5_state->vflip = 0;
 
 	if (plane->type == DRM_PLANE_TYPE_PRIMARY)
 		mdp5_state->zpos = STAGE_BASE;
@@ -565,6 +587,7 @@ 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 mdp5_plane_state *pstate = to_mdp5_plane_state(plane->state);
 	struct mdp5_kms *mdp5_kms = get_kms(plane);
 	struct device *dev = mdp5_kms->dev->dev;
 	enum mdp5_pipe pipe = mdp5_plane->pipe;
@@ -675,6 +698,8 @@ 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),
+			(pstate->hflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_LR : 0) |
+			(pstate->vflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_UD : 0) |
 			MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS));
 
 	/* not using secure mode: */
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index bd64a82..e047fec 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -68,6 +68,8 @@ enum msm_mdp_plane_property {
 	PLANE_PROP_ZPOS,
 	PLANE_PROP_ALPHA,
 	PLANE_PROP_PREMULTIPLIED,
+	PLANE_PROP_HFLIP,
+	PLANE_PROP_VFLIP,
 	PLANE_PROP_MAX_NUM
 };
 
-- 
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