drm/amdgpu/powerplay: implement thermal sensor for CZ/ST

Add missing functionality.

Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
index 7e4fcbb..9604249 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c
@@ -1785,6 +1785,21 @@ static int cz_get_max_high_clocks(struct pp_hwmgr *hwmgr, struct amd_pp_simple_c
        return 0;
 }
 
+static int cz_thermal_get_temperature(struct pp_hwmgr *hwmgr)
+{
+       int actual_temp = 0;
+       uint32_t val = cgs_read_ind_register(hwmgr->device,
+                                            CGS_IND_REG__SMC, ixTHM_TCON_CUR_TMP);
+       uint32_t temp = PHM_GET_FIELD(val, THM_TCON_CUR_TMP, CUR_TEMP);
+
+       if (PHM_GET_FIELD(val, THM_TCON_CUR_TMP, CUR_TEMP_RANGE_SEL))
+               actual_temp = ((temp / 8) - 49) * PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
+       else
+               actual_temp = (temp / 8) * PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
+
+       return actual_temp;
+}
+
 static int cz_read_sensor(struct pp_hwmgr *hwmgr, int idx, int32_t *value)
 {
        struct cz_hwmgr *cz_hwmgr = (struct cz_hwmgr *)(hwmgr->backend);
@@ -1881,6 +1896,9 @@ static int cz_read_sensor(struct pp_hwmgr *hwmgr, int idx, int32_t *value)
        case AMDGPU_PP_SENSOR_VCE_POWER:
                *value = cz_hwmgr->vce_power_gated ? 0 : 1;
                return 0;
+       case AMDGPU_PP_SENSOR_GPU_TEMP:
+               *value = cz_thermal_get_temperature(hwmgr);
+               return 0;
        default:
                return -EINVAL;
        }