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| author | Sandeep Raghuraman <sandy.8925@gmail.com> | 2020-09-09 16:34:33 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-15 17:52:43 -0400 |
| commit | 052813d9fa22d52857b10356c2a7d9c53c285c72 (patch) | |
| tree | 69040050907b205b950789fdb1c6dd22cec38a2a /drivers/gpu/drm/radeon/radeon_pm.c | |
| parent | 05f59762bcbfb3b943da3416fa2bc5ea7fdb662b (diff) | |
| download | linux-052813d9fa22d52857b10356c2a7d9c53c285c72.tar.bz2 | |
drm/radeon: Add sclk frequency as hwmon sensor
This patch adds support for reporting sclk values for Radeon GPUs, where supported.
Signed-off-by: Sandeep Raghuraman <sandy.8925@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_pm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_pm.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 8c5d6fda0d75..05c4196a8212 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -712,6 +712,31 @@ static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, radeon_hwmon_get_pwm1_ static SENSOR_DEVICE_ATTR(pwm1_min, S_IRUGO, radeon_hwmon_get_pwm1_min, NULL, 0); static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO, radeon_hwmon_get_pwm1_max, NULL, 0); +static ssize_t radeon_hwmon_show_sclk(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct radeon_device *rdev = dev_get_drvdata(dev); + struct drm_device *ddev = rdev->ddev; + u32 sclk = 0; + + /* Can't get clock frequency when the card is off */ + if ((rdev->flags & RADEON_IS_PX) && + (ddev->switch_power_state != DRM_SWITCH_POWER_ON)) + return -EINVAL; + + if (rdev->asic->dpm.get_current_sclk) + sclk = radeon_dpm_get_current_sclk(rdev); + + /* Value returned by dpm is in 10 KHz units, need to convert it into Hz + for hwmon */ + sclk *= 10000; + + return snprintf(buf, PAGE_SIZE, "%u\n", sclk); +} + +static SENSOR_DEVICE_ATTR(freq1_input, S_IRUGO, radeon_hwmon_show_sclk, NULL, + 0); + static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, @@ -721,6 +746,7 @@ static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_pwm1_enable.dev_attr.attr, &sensor_dev_attr_pwm1_min.dev_attr.attr, &sensor_dev_attr_pwm1_max.dev_attr.attr, + &sensor_dev_attr_freq1_input.dev_attr.attr, NULL }; @@ -738,7 +764,8 @@ 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_freq1_input.dev_attr.attr)) return 0; /* Skip fan attributes if fan is not present */ |