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| author | Ayan Kumar Halder <ayan.halder@arm.com> | 2018-07-17 14:11:09 +0300 |
|---|---|---|
| committer | Ayan kumar halder <ayan.halder@arm.com> | 2019-03-12 21:25:07 +0300 |
| commit | 5e290226b11b19ab2300f25644359990e7c1b1d1 (patch) | |
| tree | 56a9023db03ff59f69c9747654aea215f36c87e1 /drivers/gpu/drm/arm/malidp_drv.h | |
| parent | ed893860ee535f95b619e8cc493e0a5553362d80 (diff) | |
| download | linux-5e290226b11b19ab2300f25644359990e7c1b1d1.tar.xz | |
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: Ayan Kumar halder <ayan.halder@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patchwork.freedesktop.org/patch/291762/?series=57895&rev=1
Diffstat (limited to 'drivers/gpu/drm/arm/malidp_drv.h')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_drv.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/malidp_drv.h b/drivers/gpu/drm/arm/malidp_drv.h index b76c86f18a56..019a682b2716 100644 --- a/drivers/gpu/drm/arm/malidp_drv.h +++ b/drivers/gpu/drm/arm/malidp_drv.h @@ -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, |