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path: root/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
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2024-07-23drm/amd/display: remove dc dependencies from SPL librarySamson Tam
[Why] Make SPL library dc-independent so it can be reused by other components [How] Create separate set of fixed31_32 calls in SPL Make all inputs and outputs to SPL use primitive types For ratios and inits, return as uint32 from SPL. So add conversion from uint32 back to fixed point in SPL-to-dc translate function Reviewed-by: Relja Vojvodic <relja.vojvodic@amd.com> Signed-off-by: Jerry Zuo <jerry.zuo@amd.com> Signed-off-by: Samson Tam <samson.tam@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-06-14drm/amd/display: Remove reduntant comparisons by CoverityIvan Lipski
[WHY] Coverity analysis of the Upstream display driver code (amd-staging-drm-next) flagged these three functions as containing 'CONSTANT_EXPRESSION_RESULT' errors, i. e. the conditionals are reduntant since their result is predetermined. fixpt31_32.c: The two flagged 'ASSERT' lines redundant since they are always true: - LONG_MAX equals to the largest 'signed long long' number - res.value is type 'signed long long', So, the condition inside the 'ASSERTS's is always link_dp_training.c: The flagged conditional statement is always false: - 'max_requested.FFE_PRESET.settings.level' is 4 bits, so its max possible value is 15 - 'DP_FFE_PRESET_MAX_LEVEL' equals to 15. So, the conditional statement is always false and the wrapped code never executes. [HOW] Removed lines flagged by Coverity analysis. Reviewed-by: Sun peng Li <sunpeng.li@amd.com> Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com> Signed-off-by: Ivan Lipski <ivlipski@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-12-01drm/amd/display/dc/basics/fixpt31_32: Remove unused variable 'dc_fixpt_pi'Lee Jones
Fixes the following W=1 kernel build warning(s): drivers/gpu/drm/amd/amdgpu/../display/dc/basics/fixpt31_32.c:29:32: warning: ‘dc_fixpt_pi’ defined but not used [-Wunused-const-variable=] Cc: Harry Wentland <harry.wentland@amd.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Lee Jones <lee.jones@linaro.org> Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-11-10drm/amd/display/dc/basics/fixpt31_32: Move variables to where they're usedLee Jones
Also rid some unused ones. This patch solves 2000 warnings! Fixes the following W=1 kernel build warning(s): In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_types.h:33, from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services_types.h:30, from drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h:35, from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_helpers.c:35: At top level: drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:76:32: warning: ‘dc_fixpt_ln2_div_2’ defined but not used [-Wunused-const-variable=] 76 | static const struct fixed31_32 dc_fixpt_ln2_div_2 = { 1488522236LL }; | ^~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:75:32: warning: ‘dc_fixpt_ln2’ defined but not used [-Wunused-const-variable=] 75 | static const struct fixed31_32 dc_fixpt_ln2 = { 2977044471LL }; | ^~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:74:32: warning: ‘dc_fixpt_e’ defined but not used [-Wunused-const-variable=] 74 | static const struct fixed31_32 dc_fixpt_e = { 11674931555LL }; | ^~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:73:32: warning: ‘dc_fixpt_two_pi’ defined but not used [-Wunused-const-variable=] 73 | static const struct fixed31_32 dc_fixpt_two_pi = { 26986075409LL }; | ^~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/fixed31_32.h:72:32: warning: ‘dc_fixpt_pi’ defined but not used [-Wunused-const-variable=] 72 | static const struct fixed31_32 dc_fixpt_pi = { 13493037705LL }; | ^~~~~~~~~~~ Cc: Harry Wentland <harry.wentland@amd.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19drm/amd/display: Add function to create 4d19 fixed pointTyler DiBattista
[Why] Implemented for future use Signed-off-by: Tyler DiBattista <tyler.dibattista@amd.com> Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-29drm/amd/display: fix dscl_manual_ratio_initDmytro Laktyushkin
This change will fix wb and display scaling when ratios of 4 or more are involved Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-18drm/amd/display: inline more of fixed point codeDmytro Laktyushkin
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-18drm/amd/display: get rid of 32.32 unsigned fixed pointDmytro Laktyushkin
32.32 is redundant, 31.32 does everything we use 32.32 for Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15drm/amd/display: Do not use os typesAnthony Koo
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-02-19drm/amd/display: WBSCL filter init calculation fixesKen Chalmers
* Previous code did some calculations with a mix of normal integers and integers aligned as U2.24 fixed-point values. * There were bugs in the conversion of the final result into the S4.19 values required for the registers. Signed-off-by: Ken Chalmers <ken.chalmers@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-14drm/amd/display: use clamping rather than truncation for CM fp conversionsDmytro Laktyushkin
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-12-14drm/amd/display: Build unity lut for shaperVitaly Prosyak
Add color module to diagnostic compilation Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-29amdgpu/dc: inline fixed31_32 div_intDave Airlie
Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-29amdgpu/dc: use the builtin constant p trick on the 31/32 fixed point.Dave Airlie
This only gets us 100 bytes, but may as well be consistent. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-29amdgpu/dc: inline a bunch of the fixed 31_32 helpers.Dave Airlie
This decreases code size by a few hundred bytes. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-26drm/amd/display: Output Transfer Function Regamma RefactorAmy Zhang
- Create translation function to translate logical format to hw format - Refactor to use transfer function in dc instead of input gamma Signed-off-by: Amy Zhang <Amy.Zhang@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-26drm/amd/dc: Add dc display driver (v2)Harry Wentland
Supported DCE versions: 8.0, 10.0, 11.0, 11.2 v2: rebase against 4.11 Signed-off-by: Harry Wentland <harry.wentland@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>