From c2870527f700e919fbb543baef36032be5d626e0 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Thu, 20 Sep 2018 14:30:55 +0800 Subject: drm/amdgpu: Add fan RPM setting via sysfs 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 Signed-off-by: Rex Zhu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h | 3 + drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 190 ++++++++++++++++++++++++- drivers/gpu/drm/amd/include/kgd_pp_interface.h | 1 + drivers/gpu/drm/amd/powerplay/amd_powerplay.c | 19 +++ 4 files changed, 210 insertions(+), 3 deletions(-) (limited to 'drivers/gpu/drm') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h index 42568ae6b9f4..f972cd156795 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h @@ -278,6 +278,9 @@ enum amdgpu_pcie_gen { #define amdgpu_dpm_get_fan_speed_rpm(adev, s) \ ((adev)->powerplay.pp_funcs->get_fan_speed_rpm)((adev)->powerplay.pp_handle, (s)) +#define amdgpu_dpm_set_fan_speed_rpm(adev, s) \ + ((adev)->powerplay.pp_funcs->set_fan_speed_rpm)((adev)->powerplay.pp_handle, (s)) + #define amdgpu_dpm_get_sclk(adev, l) \ ((adev)->powerplay.pp_funcs->get_sclk((adev)->powerplay.pp_handle, (l))) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index 18d989e0e362..a9f68753ec7f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -1172,6 +1172,11 @@ static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev, struct amdgpu_device *adev = dev_get_drvdata(dev); int err; u32 speed = 0; + u32 pwm_mode; + + pwm_mode = amdgpu_dpm_get_fan_control_mode(adev); + if (pwm_mode != AMD_FAN_CTRL_MANUAL) + return -ENODATA; /* Can't adjust fan when the card is off */ if ((adev->flags & AMD_IS_PX) && @@ -1187,6 +1192,153 @@ static ssize_t amdgpu_hwmon_get_fan1_input(struct device *dev, return sprintf(buf, "%i\n", speed); } +static ssize_t amdgpu_hwmon_get_fan1_min(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + u32 min_rpm = 0; + u32 size = sizeof(min_rpm); + int r; + + if (!adev->powerplay.pp_funcs->read_sensor) + return -EINVAL; + + r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MIN_FAN_RPM, + (void *)&min_rpm, &size); + if (r) + return r; + + return snprintf(buf, PAGE_SIZE, "%d\n", min_rpm); +} + +static ssize_t amdgpu_hwmon_get_fan1_max(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + u32 max_rpm = 0; + u32 size = sizeof(max_rpm); + int r; + + if (!adev->powerplay.pp_funcs->read_sensor) + return -EINVAL; + + r = amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_MAX_FAN_RPM, + (void *)&max_rpm, &size); + if (r) + return r; + + return snprintf(buf, PAGE_SIZE, "%d\n", max_rpm); +} + +static ssize_t amdgpu_hwmon_get_fan1_target(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + int err; + u32 rpm = 0; + u32 pwm_mode; + + pwm_mode = amdgpu_dpm_get_fan_control_mode(adev); + if (pwm_mode != AMD_FAN_CTRL_MANUAL) + return -ENODATA; + + /* Can't adjust fan when the card is off */ + if ((adev->flags & AMD_IS_PX) && + (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON)) + return -EINVAL; + + if (adev->powerplay.pp_funcs->get_fan_speed_rpm) { + err = amdgpu_dpm_get_fan_speed_rpm(adev, &rpm); + if (err) + return err; + } + + return sprintf(buf, "%i\n", rpm); +} + +static ssize_t amdgpu_hwmon_set_fan1_target(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + int err; + u32 value; + u32 pwm_mode; + + pwm_mode = amdgpu_dpm_get_fan_control_mode(adev); + if (pwm_mode != AMD_FAN_CTRL_MANUAL) + return -ENODATA; + + /* Can't adjust fan when the card is off */ + if ((adev->flags & AMD_IS_PX) && + (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON)) + return -EINVAL; + + err = kstrtou32(buf, 10, &value); + if (err) + return err; + + if (adev->powerplay.pp_funcs->set_fan_speed_rpm) { + err = amdgpu_dpm_set_fan_speed_rpm(adev, value); + if (err) + return err; + } + + return count; +} + +static ssize_t amdgpu_hwmon_get_fan1_enable(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + u32 pwm_mode = 0; + + if (!adev->powerplay.pp_funcs->get_fan_control_mode) + return -EINVAL; + + pwm_mode = amdgpu_dpm_get_fan_control_mode(adev); + + return sprintf(buf, "%i\n", pwm_mode == AMD_FAN_CTRL_AUTO ? 0 : 1); +} + +static ssize_t amdgpu_hwmon_set_fan1_enable(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct amdgpu_device *adev = dev_get_drvdata(dev); + int err; + int value; + u32 pwm_mode; + + /* Can't adjust fan when the card is off */ + if ((adev->flags & AMD_IS_PX) && + (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON)) + return -EINVAL; + + if (!adev->powerplay.pp_funcs->set_fan_control_mode) + return -EINVAL; + + err = kstrtoint(buf, 10, &value); + if (err) + return err; + + if (value == 0) + pwm_mode = AMD_FAN_CTRL_AUTO; + else if (value == 1) + pwm_mode = AMD_FAN_CTRL_MANUAL; + else + return -EINVAL; + + amdgpu_dpm_set_fan_control_mode(adev, pwm_mode); + + return count; +} + static ssize_t amdgpu_hwmon_show_vddgfx(struct device *dev, struct device_attribute *attr, char *buf) @@ -1406,8 +1558,16 @@ static ssize_t amdgpu_hwmon_set_power_cap(struct device *dev, * * - pwm1_max: pulse width modulation fan control maximum level (255) * + * - fan1_min: an minimum value Unit: revolution/min (RPM) + * + * - fan1_max: an maxmum value Unit: revolution/max (RPM) + * * - fan1_input: fan speed in RPM * + * - fan[1-*]_target: Desired fan speed Unit: revolution/min (RPM) + * + * - fan[1-*]_enable: Enable or disable the sensors.1: Enable 0: Disable + * * You can use hwmon tools like sensors to view this information on your system. * */ @@ -1420,6 +1580,10 @@ static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_pwm1_ static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, amdgpu_hwmon_get_pwm1_min, NULL, 0); static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, amdgpu_hwmon_get_pwm1_max, NULL, 0); static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, amdgpu_hwmon_get_fan1_input, NULL, 0); +static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO, amdgpu_hwmon_get_fan1_min, NULL, 0); +static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, amdgpu_hwmon_get_fan1_max, NULL, 0); +static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_fan1_target, amdgpu_hwmon_set_fan1_target, 0); +static SENSOR_DEVICE_ATTR(fan1_enable, S_IRUGO | S_IWUSR, amdgpu_hwmon_get_fan1_enable, amdgpu_hwmon_set_fan1_enable, 0); static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, amdgpu_hwmon_show_vddgfx, NULL, 0); static SENSOR_DEVICE_ATTR(in0_label, S_IRUGO, amdgpu_hwmon_show_vddgfx_label, NULL, 0); static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, amdgpu_hwmon_show_vddnb, NULL, 0); @@ -1438,6 +1602,10 @@ static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_pwm1_min.dev_attr.attr, &sensor_dev_attr_pwm1_max.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan1_max.dev_attr.attr, + &sensor_dev_attr_fan1_target.dev_attr.attr, + &sensor_dev_attr_fan1_enable.dev_attr.attr, &sensor_dev_attr_in0_input.dev_attr.attr, &sensor_dev_attr_in0_label.dev_attr.attr, &sensor_dev_attr_in1_input.dev_attr.attr, @@ -1456,13 +1624,16 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj, struct amdgpu_device *adev = dev_get_drvdata(dev); umode_t effective_mode = attr->mode; - /* Skip fan attributes if fan is not present */ if (adev->pm.no_fan && (attr == &sensor_dev_attr_pwm1.dev_attr.attr || attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr || attr == &sensor_dev_attr_pwm1_max.dev_attr.attr || attr == &sensor_dev_attr_pwm1_min.dev_attr.attr || - attr == &sensor_dev_attr_fan1_input.dev_attr.attr)) + attr == &sensor_dev_attr_fan1_input.dev_attr.attr || + attr == &sensor_dev_attr_fan1_min.dev_attr.attr || + attr == &sensor_dev_attr_fan1_max.dev_attr.attr || + attr == &sensor_dev_attr_fan1_target.dev_attr.attr || + attr == &sensor_dev_attr_fan1_enable.dev_attr.attr)) return 0; /* Skip limit attributes if DPM is not enabled */ @@ -1472,7 +1643,12 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj, attr == &sensor_dev_attr_pwm1.dev_attr.attr || attr == &sensor_dev_attr_pwm1_enable.dev_attr.attr || attr == &sensor_dev_attr_pwm1_max.dev_attr.attr || - attr == &sensor_dev_attr_pwm1_min.dev_attr.attr)) + attr == &sensor_dev_attr_pwm1_min.dev_attr.attr || + attr == &sensor_dev_attr_fan1_input.dev_attr.attr || + attr == &sensor_dev_attr_fan1_min.dev_attr.attr || + attr == &sensor_dev_attr_fan1_max.dev_attr.attr || + attr == &sensor_dev_attr_fan1_target.dev_attr.attr || + attr == &sensor_dev_attr_fan1_enable.dev_attr.attr)) return 0; /* mask fan attributes if we have no bindings for this asic to expose */ @@ -1497,10 +1673,18 @@ static umode_t hwmon_attributes_visible(struct kobject *kobj, /* hide max/min values if we can't both query and manage the fan */ if ((!adev->powerplay.pp_funcs->set_fan_speed_percent && !adev->powerplay.pp_funcs->get_fan_speed_percent) && + (!adev->powerplay.pp_funcs->set_fan_speed_rpm && + !adev->powerplay.pp_funcs->get_fan_speed_rpm) && (attr == &sensor_dev_attr_pwm1_max.dev_attr.attr || attr == &sensor_dev_attr_pwm1_min.dev_attr.attr)) return 0; + if ((!adev->powerplay.pp_funcs->set_fan_speed_rpm && + !adev->powerplay.pp_funcs->get_fan_speed_rpm) && + (attr == &sensor_dev_attr_fan1_max.dev_attr.attr || + attr == &sensor_dev_attr_fan1_min.dev_attr.attr)) + return 0; + /* only APUs have vddnb */ if (!(adev->flags & AMD_IS_APU) && (attr == &sensor_dev_attr_in1_input.dev_attr.attr || diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index 97001a61aa31..980e696989b1 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -230,6 +230,7 @@ struct amd_pm_funcs { enum amd_dpm_forced_level (*get_performance_level)(void *handle); enum amd_pm_state_type (*get_current_power_state)(void *handle); int (*get_fan_speed_rpm)(void *handle, uint32_t *rpm); + int (*set_fan_speed_rpm)(void *handle, uint32_t rpm); int (*get_pp_num_states)(void *handle, struct pp_states_info *data); int (*get_pp_table)(void *handle, char **table); int (*set_pp_table)(void *handle, const char *buf, size_t size); diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c index 053c485baed0..9d8fa2e39bad 100644 --- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c @@ -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, -- cgit v1.2.3