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amdgpu/pm: Implement new API function "emit" that accepts buffer base and write offset

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(v3)
     Rewrote patchset to order patches as (API, hw impl, usecase)

     - added API for new power management function emit_clk_levels
       This function should duplicate the functionality of print_clk_levels,
       but this solution passes the buffer base and write offset down the stack.
     - new powerplay function emit_clock_levels, implemented by smu_emit_ppclk_levels()
       This function parallels the implementation of smu_print_ppclk_levels and
       calls emit_clk_levels, and allows the returns of errors
     - new helper function smu_convert_to_smuclk called by smu_print_ppclk_levels and
       smu_emit_ppclk_levels

Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-By: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Darren Powell 2021-12-04 00:23:52 -05:00 • committed by Alex Deucher
parent 4f860edecd
commit 5d64f9bbb6
5 changed files with 77 additions and 5 deletions
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1
drivers/gpu/drm/amd/include/kgd_pp_interface.h
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@ -321,6 +321,7 @@ struct amd_pm_funcs {
int (*get_fan_speed_pwm)(void *handle, u32 *speed);
int (*force_clock_level)(void *handle, enum pp_clock_type type, uint32_t mask);
int (*print_clock_levels)(void *handle, enum pp_clock_type type, char *buf);
int (*emit_clock_levels)(void *handle, enum pp_clock_type type, char *buf, int *offset);
int (*force_performance_level)(void *handle, enum amd_dpm_forced_level level);
int (*get_sclk_od)(void *handle);
int (*set_sclk_od)(void *handle, uint32_t value);