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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 05:04:00 +08:00

drm/msm/mdp4: Support NV12MT format in mdp4

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]
v3:
- change VENDOR's name and restrict usage to NV12 [pointed by Daniel]

Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2015-01-30 20:18:11 +05:30
parent af6cb4c1a4
commit 570655b09b
4 changed files with 57 additions and 0 deletions

View File

@ -3255,6 +3255,24 @@ static int framebuffer_check(const struct drm_mode_fb_cmd2 *r)
r->modifier[i], i);
return -EINVAL;
}
/* modifier specific checks: */
switch (r->modifier[i]) {
case DRM_FORMAT_MOD_SAMSUNG_64_32_TILE:
/* NOTE: the pitch restriction may be lifted later if it turns
* out that no hw has this restriction:
*/
if (r->pixel_format != DRM_FORMAT_NV12 ||
width % 128 || height % 32 ||
r->pitches[i] % 128) {
DRM_DEBUG_KMS("bad modifier data for plane %d\n", i);
return -EINVAL;
}
break;
default:
break;
}
}
for (i = num_planes; i < 4; i++) {

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@ -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);

View File

@ -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,
@ -205,6 +220,7 @@ 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);
@ -304,6 +320,7 @@ 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),
@ -324,6 +341,11 @@ 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;
}

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@ -207,4 +207,19 @@
*/
#define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3)
/*
* Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks
*
* Macroblocks are laid in a Z-shape, and each pixel data is following the
* standard NV12 style.
* As for NV12, an image is the result of two frame buffers: one for Y,
* one for the interleaved Cb/Cr components (1/2 the height of the Y buffer).
* Alignment requirements are (for each buffer):
* - multiple of 128 pixels for the width
* - multiple of 32 pixels for the height
*
* For more information: see http://linuxtv.org/downloads/v4l-dvb-apis/re32.html
*/
#define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE fourcc_mod_code(SAMSUNG, 1)
#endif /* DRM_FOURCC_H */