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drm/amdgpu: Add fan RPM setting via sysfs

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Add fan1_target for get/set fan speed in RPM unit
Add fan1_min/fan1_max for get min, max fan speed in RPM unit
Add fan1_enable to enable/disable the fan1 sensor

v3: drop the hardcode value of min/max rpm in comments pointed
    out by Alex.
v2: query the min/max rpm gpu support instand of hardcode value.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu
2018-09-20 14:30:55 +08:00
committed by Alex Deucher
parent d5f480372c
commit c2870527f7
4 changed files with 210 additions and 3 deletions
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19
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
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@@ -576,6 +576,24 @@ static int pp_dpm_get_fan_speed_rpm(void *handle, uint32_t *rpm)
return ret;
}
static int pp_dpm_set_fan_speed_rpm(void *handle, uint32_t rpm)
{
struct pp_hwmgr *hwmgr = handle;
int ret = 0;
if (!hwmgr || !hwmgr->pm_en)
return -EINVAL;
if (hwmgr->hwmgr_func->set_fan_speed_rpm == NULL) {
pr_info("%s was not implemented.\n", __func__);
return 0;
}
mutex_lock(&hwmgr->smu_lock);
ret = hwmgr->hwmgr_func->set_fan_speed_rpm(hwmgr, rpm);
mutex_unlock(&hwmgr->smu_lock);
return ret;
}
static int pp_dpm_get_pp_num_states(void *handle,
struct pp_states_info *data)
{
@@ -1297,6 +1315,7 @@ static const struct amd_pm_funcs pp_dpm_funcs = {
.set_fan_speed_percent = pp_dpm_set_fan_speed_percent,
.get_fan_speed_percent = pp_dpm_get_fan_speed_percent,
.get_fan_speed_rpm = pp_dpm_get_fan_speed_rpm,
.set_fan_speed_rpm = pp_dpm_set_fan_speed_rpm,
.get_pp_num_states = pp_dpm_get_pp_num_states,
.get_pp_table = pp_dpm_get_pp_table,
.set_pp_table = pp_dpm_set_pp_table,