diff options
| author | Andrzej Pietrasiewicz <andrzej.p@collabora.com> | 2020-03-31 17:53:08 +0200 |
|---|---|---|
| committer | Andrzej Pietrasiewicz <andrzej.p@collabora.com> | 2020-04-01 14:11:22 +0200 |
| commit | bcf6293d7ae931159fac4fbd9924b0276f1edabd (patch) | |
| tree | d2cee9e3139ae3e4fa3dc9ed4d42383b67cf917d /drivers/gpu/drm/drm_gem_framebuffer_helper.c | |
| parent | 88f1b29a44b197852828d3aba5fefa0082d377ff (diff) | |
drm/core: Calculate bpp in afbc helper
Some drivers (komeda, malidp) don't set anything in cpp. If that is the
case the right value can be inferred from the format. Then the "bpp" member
can be eliminated from struct drm_afbc_framebuffer.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200331155308.6345-3-andrzej.p@collabora.com
Diffstat (limited to 'drivers/gpu/drm/drm_gem_framebuffer_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_gem_framebuffer_helper.c | 39 |
1 files changed, 32 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c index 6fb1841fa71c..cac15294aef6 100644 --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c @@ -309,11 +309,37 @@ drm_gem_fb_create_with_dirty(struct drm_device *dev, struct drm_file *file, } EXPORT_SYMBOL_GPL(drm_gem_fb_create_with_dirty); +static __u32 drm_gem_afbc_get_bpp(struct drm_device *dev, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + const struct drm_format_info *info; + + info = drm_get_format_info(dev, mode_cmd); + + /* use whatever a driver has set */ + if (info->cpp[0]) + return info->cpp[0] * 8; + + /* guess otherwise */ + switch (info->format) { + case DRM_FORMAT_YUV420_8BIT: + return 12; + case DRM_FORMAT_YUV420_10BIT: + return 15; + case DRM_FORMAT_VUY101010: + return 30; + default: + break; + } + + /* all attempts failed */ + return 0; +} + static int drm_gem_afbc_min_size(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_afbc_framebuffer *afbc_fb) { - const struct drm_format_info *info; __u32 n_blocks, w_alignment, h_alignment, hdr_alignment; /* remove bpp when all users properly encode cpp in drm_format_info */ __u32 bpp; @@ -351,12 +377,11 @@ static int drm_gem_afbc_min_size(struct drm_device *dev, afbc_fb->aligned_height = ALIGN(mode_cmd->height, h_alignment); afbc_fb->offset = mode_cmd->offsets[0]; - info = drm_get_format_info(dev, mode_cmd); - /* - * Change to always using info->cpp[0] - * when all users properly encode it - */ - bpp = info->cpp[0] ? info->cpp[0] * 8 : afbc_fb->bpp; + bpp = drm_gem_afbc_get_bpp(dev, mode_cmd); + if (!bpp) { + drm_dbg_kms(dev, "Invalid AFBC bpp value: %d\n", bpp); + return -EINVAL; + } n_blocks = (afbc_fb->aligned_width * afbc_fb->aligned_height) / AFBC_SUPERBLOCK_PIXELS; |