| Message ID | 1528250454-25949-1-git-send-email-jsanka@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Jeykumar Sankaran <jsanka@codeaurora.org> writes: > Qualcomm Snapdragon chipsets uses compressed format > to optimize BW across multiple IP's. This change adds > needed modifier support in drm for a simple 4x4 tile > based compressed variants of base formats. > > Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org> This seems like a reasonable enough description. Reviewed-by: Eric Anholt <eric@anholt.net>
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index e04613d..81444e0 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -405,6 +405,19 @@ */ #define DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED fourcc_mod_code(BROADCOM, 1) +/* + * MSM compressed format + * + * Refers to the compressed variant of a base format. + * Implementation may be platform and base-format specific. + * + * Each macrotile consists of m x n (mostly 4 x 4) tiles. + * Pixel data pitch/stride is aligned with macrotile width. + * Pixel data height is aligned with macrotile height. + * Entire pixel data buffer is aligned with 4k(bytes). + */ +#define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1) + #if defined(__cplusplus) } #endif
Qualcomm Snapdragon chipsets uses compressed format to optimize BW across multiple IP's. This change adds needed modifier support in drm for a simple 4x4 tile based compressed variants of base formats. Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org> --- include/uapi/drm/drm_fourcc.h | 13 +++++++++++++ 1 file changed, 13 insertions(+)