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drm/amd/pm: Add LightSBR SMU MSG support

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This new MSG provide the interface for driver to enable/disable the Light Secondary Bus Reset
support from SMU. When enabled, SMU will only do minimum NBIO response to the SBR request and
leave the real HW reset to be handled by driver later. When disabled (default state),SMU will
pass the request to PSP for a HW reset

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2021-03-10 12:03:37 -05:00
committed by Alex Deucher
parent e5086659d0
commit 0e92159640
7 changed files with 42 additions and 0 deletions
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13
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
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@@ -2972,6 +2972,19 @@ int smu_gfx_state_change_set(struct smu_context *smu, uint32_t state)
return ret;
}
int smu_set_light_sbr(struct smu_context *smu, bool enable)
{
int ret = 0;
mutex_lock(&smu->mutex);
if (smu->ppt_funcs->set_light_sbr)
ret = smu->ppt_funcs->set_light_sbr(smu, enable);
mutex_unlock(&smu->mutex);
return ret;
}
static const struct amd_pm_funcs swsmu_pm_funcs = {
/* export for sysfs */
.set_fan_control_mode = smu_pp_set_fan_control_mode,