linux-dev/drivers/gpu/drm/amd/display/dc/dml/dcn21, branch master

drm/amd/display: clean up some inconsistent indentings

2022-09-19T19:08:06Z

clean up some inconsistent indentings Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2182 Reported-by: Abaci Robot Signed-off-by: Yang Li Signed-off-by: Alex Deucher

drm/amd/display: Optimizations for DML math

2022-09-13T18:32:59Z

[why] Conditionals in the DML basic math functions significantly impact mode enumeration. [how] Remove conditionals for floor/ceil operations which are used frequently in DML and add an assertion for invalid callers using zero granuality. Fix existing callers that rely on 0 granularity. Tested-by: Daniel Wheeler Reviewed-by: Nevenko Stupar Acked-by: Pavle Kotarac Signed-off-by: Aric Cyr Signed-off-by: Alex Deucher

drm/amdgpu/display: Remove t_srx_delay_us.

2022-01-25T22:54:23Z

Unused. Convert the divisions into asserts on the divisor, to debug why it is zero. The divide by zero is suspected of causing kernel panics. While I have no idea where the zero is coming from I think this patch is a positive either way. Cc: stable@vger.kernel.org Reviewed-by: Harry Wentland Signed-off-by: Bas Nieuwenhuizen Signed-off-by: Alex Deucher

drm/amd/display: fix function scopes

2021-12-13T21:34:26Z

This turns previously global functions into static, thus removing compile-time warnings such as: warning: no previous prototype for 'get_highest_allowed_voltage_level' [-Wmissing-prototypes] 742 | unsigned int get_highest_allowed_voltage_level(uint32_t chip_family, uint32_t hw_internal_rev, uint32_t pci_revision_id) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ warning: no previous prototype for 'rv1_vbios_smu_send_msg_with_param' [-Wmissing-prototypes] 102 | int rv1_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, unsigned int msg_id, unsigned int param) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Changes since v1: - As suggested by Rodrigo Siqueira: 1. Rewrite function signatures to make them more readable. 2. Get rid of unused functions in order to remove 'defined but not used' warnings. Reviewed-by: Rodrigo Siqueira Signed-off-by: Isabella Basso Signed-off-by: Alex Deucher

drm/amd/display: Reduce stack size for dml21_ModeSupportAndSystemConfigurationFull

2021-09-23T19:17:30Z

[Why & How] With Werror enabled in the kernel we were failing the clang build since dml21_ModeSupportAndSystemConfigurationFull's stack frame is 1064 when building with clang, and exceeding the default 1024 stack frame limit. The culprit seems to be the Pipe struct, so pull the relevant block out into its own sub-function. Signed-off-by: Harry Wentland Acked-by: Arnd Bergmann Reviewed-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Fix rest of pass-by-value structs in DML

2021-09-23T19:17:30Z

Passing structs adds a lot of overhead. We don't ever want to pass anything bigger than primitives by value. This patch fixes these Coverity IDs: Addresses-Coverity-ID: 1424031: ("Big parameter passed by value") Addresses-Coverity-ID: 1424055: ("Big parameter passed by value") Addresses-Coverity-ID: 1424072: ("Big parameter passed by value") Addresses-Coverity-ID: 1423779: ("Big parameter passed by value") Signed-off-by: Harry Wentland Cc: Nick Desaulniers Cc: Linus Torvalds Cc: amd-gfx@lists.freedesktop.org Cc: Linux Kernel Mailing List Cc: Arnd Bergmann Cc: Leo Li Cc: Alex Deucher Cc: Christian König Cc: Xinhui Pan Cc: Nathan Chancellor Cc: Guenter Roeck Cc: llvm@lists.linux.dev Acked-by: Christian König Build-tested-by: Nathan Chancellor Reviewed-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Pass all structs in display_rq_dlg_helpers by pointer

2021-09-23T19:17:29Z

Passing structs adds a lot of overhead. We don't ever want to pass anything bigger than primitives by value. This patch fixes these Coverity IDs: Addresses-Coverity-ID: 1423868: ("Big parameter passed by value") Addresses-Coverity-ID: 1423870: ("Big parameter passed by value") Signed-off-by: Harry Wentland Cc: Nick Desaulniers Cc: Linus Torvalds Cc: amd-gfx@lists.freedesktop.org Cc: Linux Kernel Mailing List Cc: Arnd Bergmann Cc: Leo Li Cc: Alex Deucher Cc: Christian König Cc: Xinhui Pan Cc: Nathan Chancellor Cc: Guenter Roeck Cc: llvm@lists.linux.dev Acked-by: Christian König Build-tested-by: Nathan Chancellor Reviewed-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Pass display_pipe_params_st as const in DML

2021-09-23T19:17:29Z

[Why] This neither needs to be on the stack nor passed by value to each function call. In fact, when building with clang it seems to break the Linux's default 1024 byte stack frame limit. [How] We can simply pass this as a const pointer. This patch fixes these Coverity IDs Addresses-Coverity-ID: 1424031: ("Big parameter passed by value") Addresses-Coverity-ID: 1423970: ("Big parameter passed by value") Addresses-Coverity-ID: 1423941: ("Big parameter passed by value") Addresses-Coverity-ID: 1451742: ("Big parameter passed by value") Addresses-Coverity-ID: 1451887: ("Big parameter passed by value") Addresses-Coverity-ID: 1454146: ("Big parameter passed by value") Addresses-Coverity-ID: 1454152: ("Big parameter passed by value") Addresses-Coverity-ID: 1454413: ("Big parameter passed by value") Addresses-Coverity-ID: 1466144: ("Big parameter passed by value") Addresses-Coverity-ID: 1487237: ("Big parameter passed by value") Signed-off-by: Harry Wentland Fixes: 3fe617ccafd6 ("Enable '-Werror' by default for all kernel builds") Cc: Nick Desaulniers Cc: Linus Torvalds Cc: amd-gfx@lists.freedesktop.org Cc: Linux Kernel Mailing List Cc: Arnd Bergmann Cc: Leo Li Cc: Alex Deucher Cc: Christian König Cc: Xinhui Pan Cc: Nathan Chancellor Cc: Guenter Roeck Cc: llvm@lists.linux.dev Acked-by: Christian König Build-tested-by: Nathan Chancellor Reviewed-by: Leo Li Signed-off-by: Alex Deucher

drm/amd/display: Fix typo in comments

2021-08-02T21:21:25Z

Remove the repeated word 'the' from comments Signed-off-by: Cai Huoqing Signed-off-by: Alex Deucher

drm/amd/display: Guard DST_Y_PREFETCH register overflow in DCN21

2021-07-27T16:04:19Z

[why] DST_Y_PREFETCH can overflow when DestinationLinesForPrefetch values are too large due to the former being limited to 8 bits. [how] Set the maximum value of DestinationLinesForPrefetch to be 255 * refclk period. Reviewed-by: Laktyushkin Dmytro Acked-by: Solomon Chiu Signed-off-by: Victor Lu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher