This patch series adds support for reporting sclk and vddc values for Radeon
GPUs, where supported.
Signed-off-by: Sandeep Raghuraman <sandy.8...@gmail.com>
---
drivers/gpu/drm/radeon/radeon_pm.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
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 */
--
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