drm/amd/powerplay: add fan input interface for hwmon

Add fan1_input and fan1_target interface to get fan speed info for hwmon.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index ccdb0f6..d140b3d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -1503,7 +1503,11 @@ static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev,
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;
 
-       if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
+       if (is_support_sw_smu(adev)) {
+               err = smu_get_current_rpm(&adev->smu, &speed);
+               if (err)
+                       return err;
+       } else if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
                err = amdgpu_dpm_get_fan_speed_rpm(adev, &speed);
                if (err)
                        return err;
@@ -1559,7 +1563,11 @@ static ssize_t amdgpu_hwmon_get_fan1_target(struct device *dev,
             (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
                return -EINVAL;
 
-       if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
+       if (is_support_sw_smu(adev)) {
+               err = smu_get_current_rpm(&adev->smu, &rpm);
+               if (err)
+                       return err;
+       } else if (adev->powerplay.pp_funcs->get_fan_speed_rpm) {
                err = amdgpu_dpm_get_fan_speed_rpm(adev, &rpm);
                if (err)
                        return err;

diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index d7f26e1..2cc7129 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -530,6 +530,7 @@ struct smu_funcs
        int (*dpm_set_vce_enable)(struct smu_context *smu, bool enable);
        uint32_t (*get_sclk)(struct smu_context *smu, bool low);
        uint32_t (*get_mclk)(struct smu_context *smu, bool low);
+       int (*get_current_rpm)(struct smu_context *smu, uint32_t *speed);
 };
 
 #define smu_init_microcode(smu) \
@@ -580,6 +581,8 @@ struct smu_funcs
        ((smu)->funcs->set_od8_default_settings ? (smu)->funcs->set_od8_default_settings((smu)) : 0)
 #define smu_update_od8_settings(smu, index, value) \
        ((smu)->funcs->update_od8_settings ? (smu)->funcs->update_od8_settings((smu), (index), (value)) : 0)
+#define smu_get_current_rpm(smu, speed) \
+       ((smu)->funcs->get_current_rpm ? (smu)->funcs->get_current_rpm((smu), (speed)) : 0)
 #define smu_send_smc_msg(smu, msg) \
        ((smu)->funcs->send_smc_msg? (smu)->funcs->send_smc_msg((smu), (msg)) : 0)
 #define smu_send_smc_msg_with_param(smu, msg, param) \

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index 8d25318..6333c18 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1712,6 +1712,23 @@ static int smu_v11_0_dpm_set_vce_enable(struct smu_context *smu, bool enable)
        return smu_feature_set_enabled(smu, FEATURE_DPM_UVD_BIT, enable);
 }
 
+static int smu_v11_0_get_current_rpm(struct smu_context *smu,
+                                    uint32_t *current_rpm)
+{
+       int ret;
+
+       ret = smu_send_smc_msg(smu, SMU_MSG_GetCurrentRpm);
+
+       if (ret) {
+               pr_err("Attempt to get current RPM from SMC Failed!\n");
+               return ret;
+       }
+
+       smu_read_smc_arg(smu, current_rpm);
+
+       return 0;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
        .init_microcode = smu_v11_0_init_microcode,
        .load_microcode = smu_v11_0_load_microcode,
@@ -1761,7 +1778,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
        .update_od8_settings = smu_v11_0_update_od8_settings,
        .dpm_set_uvd_enable = smu_v11_0_dpm_set_uvd_enable,
        .dpm_set_vce_enable = smu_v11_0_dpm_set_vce_enable,
-
+       .get_current_rpm = smu_v11_0_get_current_rpm,
 };
 
 void smu_v11_0_set_smu_funcs(struct smu_context *smu)