From: Beeresh Gopal <gbeeresh@xxxxxxxxxxxxxx>
Using fb modifier flag, support NV12MT format in MDP4.
v2:
- rework the modifier's description [Daniel Vetter's comment]
- drop .set_mode_config() callback [Rob Clark's comment]
Signed-off-by: Beeresh Gopal <gbeeresh@xxxxxxxxxxxxxx>
Signed-off-by: Stephane Viau <sviau@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 2 ++
drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c | 22 ++++++++++++++++++++++
include/uapi/drm/drm_fourcc.h | 5 +++++
3 files changed, 29 insertions(+)
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
index d81e19d..6387881 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c
@@ -119,6 +119,8 @@ static int mdp4_hw_init(struct msm_kms *kms)
if (mdp4_kms->rev > 1)
mdp4_write(mdp4_kms, REG_MDP4_RESET_STATUS, 1);
+ dev->mode_config.allow_fb_modifiers = true;
+
out:
pm_runtime_put_sync(dev->dev);
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
index cde2500..2c2d6a5 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_plane.c
@@ -33,6 +33,21 @@ struct mdp4_plane {
};
#define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base)
+/* MDP format helper functions */
+static inline
+enum mdp4_frame_format mdp4_get_frame_format(struct drm_framebuffer *fb)
+{
+ bool is_tile = false;
+
+ if (fb->modifier[1] == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE)
+ is_tile = true;
+
+ if (fb->pixel_format == DRM_FORMAT_NV12 && is_tile)
+ return FRAME_TILE_YCBCR_420;
+
+ return FRAME_LINEAR;
+}
+
static void mdp4_plane_set_scanout(struct drm_plane *plane,
struct drm_framebuffer *fb);
static int mdp4_plane_mode_set(struct drm_plane *plane,
@@ -203,6 +218,7 @@ static int mdp4_plane_mode_set(struct drm_plane *plane,
uint32_t op_mode = 0;
uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT;
uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT;
+ enum mdp4_frame_format frame_type = mdp4_get_frame_format(fb);
if (!(crtc && fb)) {
DBG("%s: disabled!", mdp4_plane->name);
@@ -302,6 +318,7 @@ static int mdp4_plane_mode_set(struct drm_plane *plane,
MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) |
MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) |
+ MDP4_PIPE_SRC_FORMAT_FRAME_FORMAT(frame_type) |
COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT));
mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe),
@@ -322,6 +339,11 @@ static int mdp4_plane_mode_set(struct drm_plane *plane,
mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step);
mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step);
+ if (frame_type != FRAME_LINEAR)
+ mdp4_write(mdp4_kms, REG_MDP4_PIPE_SSTILE_FRAME_SIZE(pipe),
+ MDP4_PIPE_SSTILE_FRAME_SIZE_WIDTH(src_w) |
+ MDP4_PIPE_SSTILE_FRAME_SIZE_HEIGHT(src_h));
+
return 0;
}
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 188e61f..2ff79cb 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -161,4 +161,9 @@
* authoritative source for all of these.
*/
+/* Samsung framebuffer modifiers */
+
+/* Tiled: 64x32 pixel macroblocks */
+#define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
+
#endif /* DRM_FOURCC_H */
--
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