On 07/26/2018 02:09 AM, Jeykumar Sankaran wrote: > On 2018-07-25 07:09, Stanimir Varbanov wrote: >> Hi, >> >> On 07/20/2018 11:42 PM, Sean Paul wrote: >>> From: Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx> >>> >>> 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. >>> >>> Changes in v3: >>> - Removed duplicate entry for DRM_FORMAT_MOD_QCOM_COMPRESSED (Rob Clark) >>> >>> Signed-off-by: Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx> >>> Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> >>> --- >>> include/uapi/drm/drm_fourcc.h | 37 +++++++++++++++++++++++++++++++++++ >>> 1 file changed, 37 insertions(+) >>> >>> diff --git a/include/uapi/drm/drm_fourcc.h >>> b/include/uapi/drm/drm_fourcc.h >>> index e04613d30a13..1c9a6bf8c81e 100644 >>> --- a/include/uapi/drm/drm_fourcc.h >>> +++ b/include/uapi/drm/drm_fourcc.h >>> @@ -298,6 +298,43 @@ extern "C" { >>> */ >>> #define DRM_FORMAT_MOD_SAMSUNG_64_32_TILE >>> fourcc_mod_code(SAMSUNG, 1) >>> >>> +/* >>> + * Qualcomm Compressed Format >>> + * >>> + * Refers to a compressed variant of the base format that is >>> compressed. >>> + * 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) >>> + >>> +/* >>> + * QTI DX Format >>> + * >>> + * Refers to a DX variant of the base format. >>> + * Implementation may be platform and base-format specific. >>> + */ >>> +#define DRM_FORMAT_MOD_QCOM_DX fourcc_mod_code(QCOM, 0x2) >> >> What DX stands for? > > _DX is QCOM modifier for identifying 10bit version of NV12 format since > there is no fourcc_code for the same. > Did you mean such as COLOR_FMT_P010? And how DX is translated to ? -- regards, Stan -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html