korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-20 01:24:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/radeon: Add sclk frequency as hwmon sensor

Browse Source 
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>
This commit is contained in:
Sandeep Raghuraman 2020-09-09 16:34:33 +05:30 committed by Alex Deucher
parent 05f59762bc
commit 052813d9fa
1 changed files with 28 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/gpu/drm/radeon/radeon_pm.c
View File

@ -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 */