diff options
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_hwmon.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_hwmon.c b/drivers/gpu/drm/nouveau/nouveau_hwmon.c index 24b40c5f0836..5ae3107d73df 100644 --- a/drivers/gpu/drm/nouveau/nouveau_hwmon.c +++ b/drivers/gpu/drm/nouveau/nouveau_hwmon.c @@ -764,6 +764,169 @@ static const struct hwmon_channel_info *nouveau_info[] = { &nouveau_power, NULL }; + +static umode_t +nouveau_chip_is_visible(const void *data, u32 attr, int channel) +{ + switch (attr) { + case hwmon_chip_update_interval: + return 0444; + default: + return 0; + } +} + +static umode_t +nouveau_power_is_visible(const void *data, u32 attr, int channel) +{ + struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data); + struct nvkm_iccsense *iccsense = nvxx_iccsense(&drm->client.device); + + if (!iccsense || !iccsense->data_valid || list_empty(&iccsense->rails)) + return 0; + + switch (attr) { + case hwmon_power_input: + return 0444; + case hwmon_power_max: + if (iccsense->power_w_max) + return 0444; + return 0; + case hwmon_power_crit: + if (iccsense->power_w_crit) + return 0444; + return 0; + default: + return 0; + } +} + +static umode_t +nouveau_temp_is_visible(const void *data, u32 attr, int channel) +{ + struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data); + struct nvkm_therm *therm = nvxx_therm(&drm->client.device); + + if (therm && therm->attr_get && nvkm_therm_temp_get(therm) < 0) + return 0; + + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_max: + case hwmon_temp_max_hyst: + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + case hwmon_temp_emergency: + case hwmon_temp_emergency_hyst: + return 0444; + default: + return 0; + } +} + +static umode_t +nouveau_pwm_is_visible(const void *data, u32 attr, int channel) +{ + struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data); + struct nvkm_therm *therm = nvxx_therm(&drm->client.device); + + if (therm && therm->attr_get && therm->fan_get && + therm->fan_get(therm) < 0) + return 0; + + switch (attr) { + case hwmon_pwm_enable: + case hwmon_pwm_input: + return 0644; + default: + return 0; + } +} + +static umode_t +nouveau_input_is_visible(const void *data, u32 attr, int channel) +{ + struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data); + struct nvkm_volt *volt = nvxx_volt(&drm->client.device); + + if (!volt || nvkm_volt_get(volt) < 0) + return 0; + + switch (attr) { + case hwmon_in_input: + case hwmon_in_label: + case hwmon_in_min: + case hwmon_in_max: + return 0444; + default: + return 0; + } +} + +static umode_t +nouveau_fan_is_visible(const void *data, u32 attr, int channel) +{ + struct nouveau_drm *drm = nouveau_drm((struct drm_device *)data); + struct nvkm_therm *therm = nvxx_therm(&drm->client.device); + + if (!therm || !therm->attr_get || nvkm_therm_fan_sense(therm) < 0) + return 0; + + switch (attr) { + case hwmon_fan_input: + return 0444; + default: + return 0; + } +} + +static umode_t +nouveau_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, + int channel) +{ + switch (type) { + case hwmon_chip: + return nouveau_chip_is_visible(data, attr, channel); + case hwmon_temp: + return nouveau_temp_is_visible(data, attr, channel); + case hwmon_fan: + return nouveau_fan_is_visible(data, attr, channel); + case hwmon_in: + return nouveau_input_is_visible(data, attr, channel); + case hwmon_pwm: + return nouveau_pwm_is_visible(data, attr, channel); + case hwmon_power: + return nouveau_power_is_visible(data, attr, channel); + default: + return 0; + } +} + +static const char input_label[] = "GPU core"; + +static int +nouveau_read_string(struct device *dev, enum hwmon_sensor_types type, u32 attr, + int channel, const char **buf) +{ + if (type == hwmon_in && attr == hwmon_in_label) { + *buf = input_label; + return 0; + } + + return -EOPNOTSUPP; +} + +static const struct hwmon_ops nouveau_hwmon_ops = { + .is_visible = nouveau_is_visible, + .read = NULL, + .read_string = nouveau_read_string, + .write = NULL, +}; + +static const struct hwmon_chip_info nouveau_chip_info = { + .ops = &nouveau_hwmon_ops, + .info = nouveau_info, +}; #endif int |