From: Jeykumar Sankaran jsanka@codeaurora.org
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@codeaurora.org Signed-off-by: Sean Paul seanpaul@chromium.org --- 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) + +/* + * QTI Tight Format + * + * Refers to a tightly packed variant of the base format. + * Implementation may be platform and base-format specific. + */ +#define DRM_FORMAT_MOD_QCOM_TIGHT fourcc_mod_code(QCOM, 0x4) + +/* + * QTI Tile Format + * + * Refers to a tile variant of the base format. + * Implementation may be platform and base-format specific. + */ +#define DRM_FORMAT_MOD_QCOM_TILE fourcc_mod_code(QCOM, 0x8) + /* Vivante framebuffer modifiers */
/*