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| author | james qian wang (Arm Technology China) <james.qian.wang@arm.com> | 2019-11-12 12:09:59 +0100 |
|---|---|---|
| committer | james qian wang (Arm Technology China) <james.qian.wang@arm.com> | 2019-11-14 03:29:18 +0100 |
| commit | 7ca7fcef13f494acd6d9c880ee7fb8134ed7d116 (patch) | |
| tree | a78acfb5008cc2651a49746baee416350d6f00df /drivers/gpu/drm/arm | |
| parent | drm/fb-helper: unexport drm_fb_helper_generic_probe (diff) | |
| download | linux-7ca7fcef13f494acd6d9c880ee7fb8134ed7d116.tar.xz linux-7ca7fcef13f494acd6d9c880ee7fb8134ed7d116.zip | |
drm: Add a new helper drm_color_ctm_s31_32_to_qm_n()
Add a new helper function drm_color_ctm_s31_32_to_qm_n() for driver to
convert S31.32 sign-magnitude to Qm.n 2's complement that supported by
hardware.
V4: Address Mihai, Daniel and Ilia's review comments.
V5: Includes the sign bit in the value of m (Qm.n).
V6: Allows m = 0 according to Mihail's comments.
V7: Address Mihail's comments.
V8: Use type 'u32' to replace 'uint32_t'
V9: Rebase.
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Reviewed-by: Mihail Atanassov <mihail.atanassov@arm.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191112110927.20931-2-james.qian.wang@arm.com
Diffstat (limited to 'drivers/gpu/drm/arm')
0 files changed, 0 insertions, 0 deletions