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platform/x86: asus-wmi: Expand support of GPU fan to read RPM and label 

The previously added patch to add support for pwm change for TUF laptops
also is usuable for more than TUF. The same method `0x00110014` is
used to read the fan RPM.

Add two extra attributes for reading fan2 plus fan2 label.

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220916004623.10992-1-luke@ljones.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Luke D. Jones 2022-09-16 12:46:23 +12:00 committed by Hans de Goede
parent 096575db0b
commit 9180991873
1 changed files with 34 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/platform/x86/asus-wmi.c
View File

@ -72,6 +72,7 @@ module_param(fnlock_default, bool, 0444);
#define ASUS_WMI_FNLOCK_BIOS_DISABLED BIT(0)
#define ASUS_GPU_FAN_DESC "gpu_fan"
#define ASUS_FAN_DESC "cpu_fan"
#define ASUS_FAN_MFUN 0x13
#define ASUS_FAN_SFUN_READ 0x06
@ -2078,6 +2079,30 @@ static ssize_t asus_hwmon_temp1(struct device *dev,
}
/* GPU fan on modern ROG laptops */
static ssize_t fan2_input_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct asus_wmi *asus = dev_get_drvdata(dev);
int value;
int ret;
ret = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_GPU_FAN_CTRL, &value);
if (ret < 0)
return ret;
value &= 0xffff;
return sysfs_emit(buf, "%d\n", value * 100);
}
static ssize_t fan2_label_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%s\n", ASUS_GPU_FAN_DESC);
}
static ssize_t pwm2_enable_show(struct device *dev,
struct device_attribute *attr,
char *buf)
@ -2127,9 +2152,12 @@ static ssize_t pwm2_enable_store(struct device *dev,
/* Fan1 */
static DEVICE_ATTR_RW(pwm1);
static DEVICE_ATTR_RW(pwm1_enable);
static DEVICE_ATTR_RW(pwm2_enable);
static DEVICE_ATTR_RO(fan1_input);
static DEVICE_ATTR_RO(fan1_label);
/* Fan2 - GPU fan */
static DEVICE_ATTR_RW(pwm2_enable);
static DEVICE_ATTR_RO(fan2_input);
static DEVICE_ATTR_RO(fan2_label);
/* Temperature */
static DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL);
@ -2140,6 +2168,8 @@ static struct attribute *hwmon_attributes[] = {
&dev_attr_pwm2_enable.attr,
&dev_attr_fan1_input.attr,
&dev_attr_fan1_label.attr,
&dev_attr_fan2_input.attr,
&dev_attr_fan2_label.attr,
&dev_attr_temp1_input.attr,
NULL
@ -2160,7 +2190,9 @@ static umode_t asus_hwmon_sysfs_is_visible(struct kobject *kobj,
|| attr == &dev_attr_pwm1_enable.attr) {
if (asus->fan_type == FAN_TYPE_NONE)
return 0;
} else if (attr == &dev_attr_pwm2_enable.attr) {
} else if (attr == &dev_attr_fan2_input.attr
|| attr == &dev_attr_fan2_label.attr
|| attr == &dev_attr_pwm2_enable.attr) {
if (asus->gpu_fan_type == FAN_TYPE_NONE)
return 0;
} else if (attr == &dev_attr_temp1_input.attr) {