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drm/komeda: Adds internal bpp computing for arm afbc only format YU08 YU10

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The drm_format_info doesn't have any cpp or block_size (both are zero)
information for arm only afbc format YU08/YU10. we need to compute it
by ourselves.

Changes since v1:
1. Removed redundant warning check in komeda_get_afbc_format_bpp();
2. Removed a redundant empty line;
3. Rebased the branch.

Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1565073104-24047-1-git-send-email-lowry.li@arm.com
Link: https://patchwork.freedesktop.org/patch/msgid/1565073104-24047-1-git-send-email-lowry.li@arm.com
This commit is contained in:
Lowry Li (Arm Technology China) 2019-08-06 06:31:56 +00:00 committed by james qian wang (Arm Technology China)
parent 1109635b29
commit a9577f1921
3 changed files with 25 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
View File

@ -35,6 +35,25 @@ komeda_get_format_caps(struct komeda_format_caps_table *table,
return NULL;
}
u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info, u64 modifier)
{
u32 bpp;
switch (info->format) {
case DRM_FORMAT_YUV420_8BIT:
bpp = 12;
break;
case DRM_FORMAT_YUV420_10BIT:
bpp = 15;
break;
default:
bpp = info->cpp[0] * 8;
break;
}
return bpp;
}
/* Two assumptions
* 1. RGB always has YTR
* 2. Tiled RGB always has SC

3
drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
View File

@ -97,6 +97,9 @@ const struct komeda_format_caps *
komeda_get_format_caps(struct komeda_format_caps_table *table,
u32 fourcc, u64 modifier);
u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
u64 modifier);
u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
u32 layer_type, u32 *n_fmts);

5
drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
View File

@ -43,7 +43,7 @@ komeda_fb_afbc_size_check(struct komeda_fb *kfb, struct drm_file *file,
struct drm_framebuffer *fb = &kfb->base;
const struct drm_format_info *info = fb->format;
struct drm_gem_object *obj;
u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks;
u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks, bpp;
u64 min_size;
obj = drm_gem_object_lookup(file, mode_cmd->handles[0]);
@ -88,8 +88,9 @@ komeda_fb_afbc_size_check(struct komeda_fb *kfb, struct drm_file *file,
kfb->offset_payload = ALIGN(n_blocks * AFBC_HEADER_SIZE,
alignment_header);
bpp = komeda_get_afbc_format_bpp(info, fb->modifier);
kfb->afbc_size = kfb->offset_payload + n_blocks *
ALIGN(info->cpp[0] * AFBC_SUPERBLK_PIXELS,
ALIGN(bpp * AFBC_SUPERBLK_PIXELS / 8,
AFBC_SUPERBLK_ALIGNMENT);
min_size = kfb->afbc_size + fb->offsets[0];
if (min_size > obj->size) {