drm/amd/powerplay: implement sensor of thermal_get_temperature for smu11

add sensor interface of thermal temperature for debugfs and hwmon.

Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index 659e911..d84593a 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -45,6 +45,8 @@ MODULE_FIRMWARE("amdgpu/vega20_smc.bin");
 #define SMU11_THERMAL_MINIMUM_ALERT_TEMP      0
 #define SMU11_THERMAL_MAXIMUM_ALERT_TEMP      255
 
+#define SMU11_TEMPERATURE_UNITS_PER_CENTIGRADES 1000
+
 static int smu_v11_0_send_msg_without_waiting(struct smu_context *smu,
                                              uint16_t msg)
 {
@@ -1010,6 +1012,26 @@ static int smu_v11_0_get_current_activity_percent(struct smu_context *smu,
        return 0;
 }
 
+static int smu_v11_0_thermal_get_temperature(struct smu_context *smu, uint32_t *value)
+{
+       struct amdgpu_device *adev = smu->adev;
+       uint32_t temp = 0;
+
+       if (!value)
+               return -EINVAL;
+
+       temp = RREG32_SOC15(THM, 0, mmCG_MULT_THERMAL_STATUS);
+       temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >>
+                       CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT;
+
+       temp = temp & 0x1ff;
+       temp *= SMU11_TEMPERATURE_UNITS_PER_CENTIGRADES;
+
+       *value = temp;
+
+       return 0;
+}
+
 static int smu_v11_0_read_sensor(struct smu_context *smu,
                                 enum amd_pp_sensors sensor,
                                 void *data, uint32_t *size)
@@ -1029,6 +1051,10 @@ static int smu_v11_0_read_sensor(struct smu_context *smu,
                ret = smu_get_current_clk_freq(smu, PPCLK_GFXCLK, (uint32_t *)data);
                *size = 4;
                break;
+       case AMDGPU_PP_SENSOR_GPU_TEMP:
+               ret = smu_v11_0_thermal_get_temperature(smu, (uint32_t *)data);
+               *size = 4;
+               break;
        default:
                ret = -EINVAL;
                break;

diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index 16eb5a1..55e1b8d 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -794,6 +794,7 @@ static const struct pptable_funcs vega20_ppt_funcs = {
        .populate_umd_state_clk = vega20_populate_umd_state_clk,
        .print_clk_levels = vega20_print_clk_levels,
        .force_clk_levels = vega20_force_clk_levels,
+
 };
 
 void vega20_set_ppt_funcs(struct smu_context *smu)

diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.h b/drivers/gpu/drm/amd/powerplay/vega20_ppt.h
index ceba4f7..419dae3 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.h
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.h
@@ -28,7 +28,6 @@
 
 #define MAX_REGULAR_DPM_NUMBER 16
 #define MAX_PCIE_CONF 2
-
 struct vega20_dpm_level {
         bool            enabled;
         uint32_t        value;