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platform/x86: asus-wmi: add WMI method to show if egpu connected

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Exposes the WMI method which tells if the eGPU is properly connected
on the devices that support it.

Signed-off-by: Luke D. Jones <luke@ljones.dev>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20230630053552.976579-5-luke@ljones.dev
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Luke D. Jones
2023-06-30 17:35:48 +12:00
committed by Hans de Goede
parent ee887807d0
commit d4eca58aaf
3 changed files with 34 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/ABI/testing/sysfs-platform-asus-wmi
+10 -1
View File
@@ -107,4 +107,13 @@ Description:
Get the current charging mode being used:
* 1 - Barrel connected charger,
* 2 - USB-C charging
* 3 - Both connected, barrel used for charging
* 3 - Both connected, barrel used for charging
What: /sys/devices/platform/<platform>/egpu_connected
Date: Jun 2023
KernelVersion: 6.5
Contact: "Luke Jones" <luke@ljones.dev>
Description:
Show if the egpu (XG Mobile) is correctly connected:
* 0 - False,
* 1 - True
drivers/platform/x86/asus-wmi.c
+21
View File
@@ -243,6 +243,7 @@ struct asus_wmi {
bool charge_mode_available;
bool egpu_enable_available;
bool egpu_connect_available;
bool dgpu_disable_available;
bool gpu_mux_mode_available;
@@ -709,6 +710,22 @@ static ssize_t egpu_enable_store(struct device *dev,
}
static DEVICE_ATTR_RW(egpu_enable);
/* Is eGPU connected? *********************************************************/
static ssize_t egpu_connected_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct asus_wmi *asus = dev_get_drvdata(dev);
int result;
result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_EGPU_CONNECTED);
if (result < 0)
return result;
return sysfs_emit(buf, "%d\n", result);
}
static DEVICE_ATTR_RO(egpu_connected);
/* gpu mux switch *************************************************************/
static ssize_t gpu_mux_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -3645,6 +3662,7 @@ static struct attribute *platform_attributes[] = {
&dev_attr_touchpad.attr,
&dev_attr_charge_mode.attr,
&dev_attr_egpu_enable.attr,
&dev_attr_egpu_connected.attr,
&dev_attr_dgpu_disable.attr,
&dev_attr_gpu_mux_mode.attr,
&dev_attr_lid_resume.attr,
@@ -3677,6 +3695,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->charge_mode_available;
else if (attr == &dev_attr_egpu_enable.attr)
ok = asus->egpu_enable_available;
else if (attr == &dev_attr_egpu_connected.attr)
ok = asus->egpu_connect_available;
else if (attr == &dev_attr_dgpu_disable.attr)
ok = asus->dgpu_disable_available;
else if (attr == &dev_attr_gpu_mux_mode.attr)
@@ -3943,6 +3963,7 @@ static int asus_wmi_add(struct platform_device *pdev)
asus->charge_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_CHARGE_MODE);
asus->egpu_enable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU);
asus->egpu_connect_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU_CONNECTED);
asus->dgpu_disable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_DGPU);
asus->gpu_mux_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_GPU_MUX);
asus->kbd_rgb_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_MODE);
include/linux/platform_data/x86/asus-wmi.h
+3 -1
View File
@@ -100,7 +100,9 @@
/* Charging mode - 1=Barrel, 2=USB */
#define ASUS_WMI_DEVID_CHARGE_MODE 0x0012006C
/* dgpu on/off */
/* epu is connected? 1 == true */
#define ASUS_WMI_DEVID_EGPU_CONNECTED 0x00090018
/* egpu on/off */
#define ASUS_WMI_DEVID_EGPU 0x00090019
/* dgpu on/off */