Commit 5e290226 authored by Ayan Kumar Halder's avatar Ayan Kumar Halder Committed by Ayan kumar halder

drm/arm/malidp:- Define a common list of AFBC format modifiers supported for DP500, DP550 and DP650

We need to define a common list of format modifiers supported by each of
the Mali display processors.

The following are the constraints with AFBC:-

1. AFBC is not supported for the formats defined in
malidp_hw_format_is_linear_only()

2. Some of the formats are supported only with AFBC modifiers. Thus we have
introduced a new function 'malidp_hw_format_is_afbc_only()' which verifies
the same.

3. AFBC_FORMAT_MOD_YTR needs to be provided for any RGB format.

4. Formats <= 16bpp cannot support AFBC_FORMAT_MOD_SPLIT.

5. CBR should not be set for non-subsampled formats.

6. SMART layer does not support framebuffer with AFBC modifiers.
Return -EINVAL for such a scenario.

7. AFBC_FORMAT_MOD_YTR is not supported for any YUV formats.

8. Formats which are subsampled cannot support AFBC_FORMAT_MOD_SPLIT.
However in DP550, YUV_420_10BIT is supported with AFBC_FORMAT_MOD_SPLIT.
This feature has been identified with
MALIDP_DEVICE_AFBC_YUV_420_10_SUPPORT_SPLIT.

9. In DP550 and DP650, for YUYV, the hardware supports different
format-ids to be used with and without AFBC modifier. We have used the
feature 'MALIDP_DEVICE_AFBC_YUYV_USE_422_P2' to identify this
characteristic.

10. DP500 does not support split mode (ie AFBC_FORMAT_MOD_SPLIT). We have
used the feature 'MALIDP_DEVICE_AFBC_SUPPORT_SPLIT' to identify the DPs
which support SPLIT mode.

11. DP550 supports YUV420 with split mode. We have defined the feature
'AFBC_SUPPORT_SPLIT_WITH_YUV_420_10' to identify this characteristic.

Changes since v1:-
- Merged https://patchwork.freedesktop.org/patch/265215/ into this patch
- As Liviu pointed out in the last patch, we can pull the checks outside
of the 'while (*modifiers != DRM_FORMAT_MOD_INVALID)' loop
- Rebased

Changes since v3 (series):
- Added the ack
- Rebased on the latest drm-misc-next
Signed-off-by: default avatarAyan Kumar halder <ayan.halder@arm.com>
Reviewed-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
Acked-by: default avatarAlyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patchwork.freedesktop.org/patch/291762/?series=57895&rev=1
parent ed893860
......@@ -264,37 +264,17 @@ static bool
malidp_verify_afbc_framebuffer_caps(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
const struct drm_format_info *info;
if ((mode_cmd->modifier[0] >> 56) != DRM_FORMAT_MOD_VENDOR_ARM) {
DRM_DEBUG_KMS("Unknown modifier (not Arm)\n");
if (malidp_format_mod_supported(dev, mode_cmd->pixel_format,
mode_cmd->modifier[0]) == false)
return false;
}
if (mode_cmd->modifier[0] &
~DRM_FORMAT_MOD_ARM_AFBC(AFBC_MOD_VALID_BITS)) {
DRM_DEBUG_KMS("Unsupported modifiers\n");
return false;
}
info = drm_get_format_info(dev, mode_cmd);
if (!info) {
DRM_DEBUG_KMS("Unable to get the format information\n");
return false;
}
if (info->num_planes != 1) {
DRM_DEBUG_KMS("AFBC buffers expect one plane\n");
return false;
}
if (mode_cmd->offsets[0] != 0) {
DRM_DEBUG_KMS("AFBC buffers' plane offset should be 0\n");
return false;
}
switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
case AFBC_SIZE_16X16:
if ((mode_cmd->width % 16) || (mode_cmd->height % 16)) {
DRM_DEBUG_KMS("AFBC buffers must be aligned to 16 pixels\n");
return false;
......@@ -319,8 +299,8 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
u32 afbc_superblock_width = 0, afbc_size = 0;
switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
case AFBC_SIZE_16X16:
afbc_superblock_height = 16;
afbc_superblock_width = 16;
break;
......
......@@ -90,6 +90,12 @@ struct malidp_crtc_state {
int malidp_de_planes_init(struct drm_device *drm);
int malidp_crtc_init(struct drm_device *drm);
bool malidp_hw_format_is_linear_only(u32 format);
bool malidp_hw_format_is_afbc_only(u32 format);
bool malidp_format_mod_supported(struct drm_device *drm,
u32 format, u64 modifier);
#ifdef CONFIG_DEBUG_FS
void malidp_error(struct malidp_drm *malidp,
struct malidp_error_stats *error_stats, u32 status,
......
......@@ -60,6 +60,8 @@ static const struct malidp_format_id malidp500_de_formats[] = {
#define MALIDP_ID(__group, __format) \
((((__group) & 0x7) << 3) | ((__format) & 0x7))
#define AFBC_YUV_422_FORMAT_ID MALIDP_ID(5, 1)
#define MALIDP_COMMON_FORMATS \
/* fourcc, layers supporting the format, internal id */ \
{ DRM_FORMAT_ARGB2101010, DE_VIDEO1 | DE_GRAPHICS1 | DE_VIDEO2 | SE_MEMWRITE, MALIDP_ID(0, 0) }, \
......@@ -162,6 +164,32 @@ static const struct malidp_layer malidp650_layers[] = {
ROTATE_NONE, 0 },
};
const u64 malidp_format_modifiers[] = {
/* All RGB formats (except XRGB, RGBX, XBGR, BGRX) */
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR),
/* All RGB formats > 16bpp (except XRGB, RGBX, XBGR, BGRX) */
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE | AFBC_SPLIT),
/* All 8 or 10 bit YUV 444 formats. */
/* In DP550, 10 bit YUV 420 format also supported */
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE | AFBC_SPLIT),
/* YUV 420, 422 P1 8 bit and YUV 444 8 bit/10 bit formats */
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16),
/* YUV 420, 422 P1 8, 10 bit formats */
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR | AFBC_SPARSE),
DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR),
/* All formats */
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
#define SE_N_SCALING_COEFFS 96
static const u16 dp500_se_scaling_coeffs[][SE_N_SCALING_COEFFS] = {
[MALIDP_UPSCALING_COEFFS - 1] = {
......@@ -866,7 +894,10 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
.se_base = MALIDP550_SE_BASE,
.dc_base = MALIDP550_DC_BASE,
.out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
.features = MALIDP_REGMAP_HAS_CLEARIRQ,
.features = MALIDP_REGMAP_HAS_CLEARIRQ |
MALIDP_DEVICE_AFBC_SUPPORT_SPLIT |
MALIDP_DEVICE_AFBC_YUV_420_10_SUPPORT_SPLIT |
MALIDP_DEVICE_AFBC_YUYV_USE_422_P2,
.n_layers = ARRAY_SIZE(malidp550_layers),
.layers = malidp550_layers,
.de_irq_map = {
......@@ -912,7 +943,9 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
.se_base = MALIDP550_SE_BASE,
.dc_base = MALIDP550_DC_BASE,
.out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
.features = MALIDP_REGMAP_HAS_CLEARIRQ,
.features = MALIDP_REGMAP_HAS_CLEARIRQ |
MALIDP_DEVICE_AFBC_SUPPORT_SPLIT |
MALIDP_DEVICE_AFBC_YUYV_USE_422_P2,
.n_layers = ARRAY_SIZE(malidp650_layers),
.layers = malidp650_layers,
.de_irq_map = {
......@@ -961,19 +994,72 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
};
u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
u8 layer_id, u32 format)
u8 layer_id, u32 format, bool has_modifier)
{
unsigned int i;
for (i = 0; i < map->n_pixel_formats; i++) {
if (((map->pixel_formats[i].layer & layer_id) == layer_id) &&
(map->pixel_formats[i].format == format))
return map->pixel_formats[i].id;
(map->pixel_formats[i].format == format)) {
/*
* In some DP550 and DP650, DRM_FORMAT_YUYV + AFBC modifier
* is supported by a different h/w format id than
* DRM_FORMAT_YUYV (only).
*/
if (format == DRM_FORMAT_YUYV &&
(has_modifier) &&
(map->features & MALIDP_DEVICE_AFBC_YUYV_USE_422_P2))
return AFBC_YUV_422_FORMAT_ID;
else
return map->pixel_formats[i].id;
}
}
return MALIDP_INVALID_FORMAT_ID;
}
bool malidp_hw_format_is_linear_only(u32 format)
{
switch (format) {
case DRM_FORMAT_ARGB2101010:
case DRM_FORMAT_RGBA1010102:
case DRM_FORMAT_BGRA1010102:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_BGRA8888:
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_RGBX8888:
case DRM_FORMAT_BGRX8888:
case DRM_FORMAT_RGB888:
case DRM_FORMAT_RGB565:
case DRM_FORMAT_ARGB1555:
case DRM_FORMAT_RGBA5551:
case DRM_FORMAT_BGRA5551:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_XYUV8888:
case DRM_FORMAT_XVYU2101010:
case DRM_FORMAT_X0L2:
case DRM_FORMAT_X0L0:
return true;
default:
return false;
}
}
bool malidp_hw_format_is_afbc_only(u32 format)
{
switch (format) {
case DRM_FORMAT_VUY888:
case DRM_FORMAT_VUY101010:
case DRM_FORMAT_YUV420_8BIT:
case DRM_FORMAT_YUV420_10BIT:
return true;
default:
return false;
}
}
static void malidp_hw_clear_irq(struct malidp_hw_device *hwdev, u8 block, u32 irq)
{
u32 base = malidp_get_block_base(hwdev, block);
......
......@@ -95,7 +95,10 @@ struct malidp_se_config {
};
/* regmap features */
#define MALIDP_REGMAP_HAS_CLEARIRQ (1 << 0)
#define MALIDP_REGMAP_HAS_CLEARIRQ BIT(0)
#define MALIDP_DEVICE_AFBC_SUPPORT_SPLIT BIT(1)
#define MALIDP_DEVICE_AFBC_YUV_420_10_SUPPORT_SPLIT BIT(2)
#define MALIDP_DEVICE_AFBC_YUYV_USE_422_P2 BIT(3)
struct malidp_hw_regmap {
/* address offset of the DE register bank */
......@@ -321,7 +324,7 @@ int malidp_se_irq_init(struct drm_device *drm, int irq);
void malidp_se_irq_fini(struct malidp_hw_device *hwdev);
u8 malidp_hw_get_format_id(const struct malidp_hw_regmap *map,
u8 layer_id, u32 format);
u8 layer_id, u32 format, bool has_modifier);
static inline u8 malidp_hw_get_pitch_align(struct malidp_hw_device *hwdev, bool rotated)
{
......@@ -390,9 +393,18 @@ static inline void malidp_se_set_enh_coeffs(struct malidp_hw_device *hwdev)
#define MALIDP_GAMMA_LUT_SIZE 4096
#define AFBC_MOD_VALID_BITS (AFBC_FORMAT_MOD_BLOCK_SIZE_MASK | \
AFBC_FORMAT_MOD_YTR | AFBC_FORMAT_MOD_SPLIT | \
AFBC_FORMAT_MOD_SPARSE | AFBC_FORMAT_MOD_CBR | \
AFBC_FORMAT_MOD_TILED | AFBC_FORMAT_MOD_SC)
#define AFBC_SIZE_MASK AFBC_FORMAT_MOD_BLOCK_SIZE_MASK
#define AFBC_SIZE_16X16 AFBC_FORMAT_MOD_BLOCK_SIZE_16x16
#define AFBC_YTR AFBC_FORMAT_MOD_YTR
#define AFBC_SPARSE AFBC_FORMAT_MOD_SPARSE
#define AFBC_CBR AFBC_FORMAT_MOD_CBR
#define AFBC_SPLIT AFBC_FORMAT_MOD_SPLIT
#define AFBC_TILED AFBC_FORMAT_MOD_TILED
#define AFBC_SC AFBC_FORMAT_MOD_SC
#define AFBC_MOD_VALID_BITS (AFBC_SIZE_MASK | AFBC_YTR | AFBC_SPLIT | \
AFBC_SPARSE | AFBC_CBR | AFBC_TILED | AFBC_SC)
extern const u64 malidp_format_modifiers[];
#endif /* __MALIDP_HW_H__ */
......@@ -143,7 +143,7 @@ malidp_mw_encoder_atomic_check(struct drm_encoder *encoder,
mw_state->format =
malidp_hw_get_format_id(&malidp->dev->hw->map, SE_MEMWRITE,
fb->format->format);
fb->format->format, !!fb->modifier);
if (mw_state->format == MALIDP_INVALID_FORMAT_ID) {
struct drm_format_name_buf format_name;
......
......@@ -52,6 +52,8 @@
#define MALIDP550_LS_ENABLE 0x01c
#define MALIDP550_LS_R1_IN_SIZE 0x020
#define MODIFIERS_COUNT_MAX 15
/*
* This 4-entry look-up-table is used to determine the full 8-bit alpha value
* for formats with 1- or 2-bit alpha channels.
......@@ -145,6 +147,119 @@ static void malidp_plane_atomic_print_state(struct drm_printer *p,
drm_printf(p, "\tmmu_prefetch_pgsize=%d\n", ms->mmu_prefetch_pgsize);
}
bool malidp_format_mod_supported(struct drm_device *drm,
u32 format, u64 modifier)
{
const struct drm_format_info *info;
const u64 *modifiers;
struct malidp_drm *malidp = drm->dev_private;
const struct malidp_hw_regmap *map = &malidp->dev->hw->map;
if (WARN_ON(modifier == DRM_FORMAT_MOD_INVALID))
return false;
/* Some pixel formats are supported without any modifier */
if (modifier == DRM_FORMAT_MOD_LINEAR) {
/*
* However these pixel formats need to be supported with
* modifiers only
*/
return !malidp_hw_format_is_afbc_only(format);
}
if ((modifier >> 56) != DRM_FORMAT_MOD_VENDOR_ARM) {
DRM_ERROR("Unknown modifier (not Arm)\n");
return false;
}
if (modifier &
~DRM_FORMAT_MOD_ARM_AFBC(AFBC_MOD_VALID_BITS)) {
DRM_DEBUG_KMS("Unsupported modifiers\n");
return false;
}
modifiers = malidp_format_modifiers;
/* SPLIT buffers must use SPARSE layout */
if (WARN_ON_ONCE((modifier & AFBC_SPLIT) && !(modifier & AFBC_SPARSE)))
return false;
/* CBR only applies to YUV formats, where YTR should be always 0 */
if (WARN_ON_ONCE((modifier & AFBC_CBR) && (modifier & AFBC_YTR)))
return false;
while (*modifiers != DRM_FORMAT_MOD_INVALID) {
if (*modifiers == modifier)
break;
modifiers++;
}
/* return false, if the modifier was not found */
if (*modifiers == DRM_FORMAT_MOD_INVALID) {
DRM_DEBUG_KMS("Unsupported modifier\n");
return false;
}
info = drm_format_info(format);
if (info->num_planes != 1) {
DRM_DEBUG_KMS("AFBC buffers expect one plane\n");
return false;
}
if (malidp_hw_format_is_linear_only(format) == true) {
DRM_DEBUG_KMS("Given format (0x%x) is supported is linear mode only\n",
format);
return false;
}
/*
* RGB formats need to provide YTR modifier and YUV formats should not
* provide YTR modifier.
*/
if (!(info->is_yuv) != !!(modifier & AFBC_FORMAT_MOD_YTR)) {
DRM_DEBUG_KMS("AFBC_FORMAT_MOD_YTR is %s for %s formats\n",
info->is_yuv ? "disallowed" : "mandatory",
info->is_yuv ? "YUV" : "RGB");
return false;
}
if (modifier & AFBC_SPLIT) {
if (!info->is_yuv) {
if (drm_format_plane_cpp(format, 0) <= 2) {
DRM_DEBUG_KMS("RGB formats <= 16bpp are not supported with SPLIT\n");
return false;
}
}
if ((drm_format_horz_chroma_subsampling(format) != 1) ||
(drm_format_vert_chroma_subsampling(format) != 1)) {
if (!(format == DRM_FORMAT_YUV420_10BIT &&
(map->features & MALIDP_DEVICE_AFBC_YUV_420_10_SUPPORT_SPLIT))) {
DRM_DEBUG_KMS("Formats which are sub-sampled should never be split\n");
return false;
}
}
}
if (modifier & AFBC_CBR) {
if ((drm_format_horz_chroma_subsampling(format) == 1) ||
(drm_format_vert_chroma_subsampling(format) == 1)) {
DRM_DEBUG_KMS("Formats which are not sub-sampled should not have CBR set\n");
return false;
}
}
return true;
}
static bool malidp_format_mod_supported_per_plane(struct drm_plane *plane,
u32 format, u64 modifier)
{
return malidp_format_mod_supported(plane->dev, format, modifier);
}
static const struct drm_plane_funcs malidp_de_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
......@@ -153,6 +268,7 @@ static const struct drm_plane_funcs malidp_de_plane_funcs = {
.atomic_duplicate_state = malidp_duplicate_plane_state,
.atomic_destroy_state = malidp_destroy_plane_state,
.atomic_print_state = malidp_plane_atomic_print_state,
.format_mod_supported = malidp_format_mod_supported_per_plane,
};
static int malidp_se_check_scaling(struct malidp_plane *mp,
......@@ -406,8 +522,8 @@ static int malidp_de_plane_check(struct drm_plane *plane,
fb = state->fb;
ms->format = malidp_hw_get_format_id(&mp->hwdev->hw->map,
mp->layer->id,
fb->format->format);
mp->layer->id, fb->format->format,
!!fb->modifier);
if (ms->format == MALIDP_INVALID_FORMAT_ID)
return -EINVAL;
......@@ -469,6 +585,12 @@ static int malidp_de_plane_check(struct drm_plane *plane,
return -EINVAL;
}
/* SMART layer does not support AFBC */
if (mp->layer->id == DE_SMART && fb->modifier) {
DRM_ERROR("AFBC framebuffer not supported in SMART layer");
return -EINVAL;
}
ms->rotmem_size = 0;
if (state->rotation & MALIDP_ROTATED_MASK) {
int val;
......
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