drm/amd/display: Silence type conversion warnings in dml2

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[Why]
Compiler build generates type conversion warnings throughout dc/dml2_0
where values are implicitly narrowed (e.g. int/uint32_t/uint64_t assigned
to uint8_t, unsigned char, char, bool, or dml_bool_t), cluttering build
output and masking genuine issues.

[How]
Add explicit casts at each narrowing assignment with ASSERT guards
to catch out-of-range values in debug builds:
- uint8_t: otg_inst, num_planes, pipe_idx, vblank_index fields
- unsigned char: pipe_dlg_param.otg_inst from tg->inst
- char: mcache num_pipes from num_dpps_required
- bool/dml_bool_t: INTERLACE bitfield and fams2 enable flag use != 0
- uint64_t: widen min_hardware_refresh_in_uhz to hold div64_u64 result,
  then cast to unsigned long for min_refresh_uhz with ASSERT

Reviewed-by: Austin Zheng <austin.zheng@amd.com>
Signed-off-by: Gaghik Khachatrian <gaghik.khachatrian@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Gaghik Khachatrian 2026-03-16 11:34:49 -04:00 • committed by Alex Deucher

parent c3f327a9a3

commit 3722df98c2

7 changed files with 41 additions and 19 deletions

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13

drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_translation_helper.c

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15

drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_utils.c

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6

drivers/gpu/drm/amd/display/dc/dml2_0/dml21/dml21_wrapper_fpu.c

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18

drivers/gpu/drm/amd/display/dc/dml2_0/dml2_dc_resource_mgmt.c

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3

drivers/gpu/drm/amd/display/dc/dml2_0/dml2_mall_phantom.c

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2

drivers/gpu/drm/amd/display/dc/dml2_0/dml2_translation_helper.c

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3

drivers/gpu/drm/amd/display/dc/dml2_0/dml2_utils.c

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