From: Jeykumar Sankaran Date: Wed, 6 Jun 2018 02:00:54 +0000 (-0700) Subject: drm: add msm compressed format modifiers X-Git-Tag: v4.19~298^2~6^2~47 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2a8536f6e8464b8988baa7db881f30721616b0da;p=platform%2Fkernel%2Flinux-rpi.git drm: add msm compressed format modifiers 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) Changes in v4: - Remove all modifiers aside from COMPRESSED, this includes tiled and 10-bit Signed-off-by: Jeykumar Sankaran Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index d43949b..721ab7e 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -299,6 +299,19 @@ 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) + /* Vivante framebuffer modifiers */ /*