Adds support for changing the laptop keyboard LED modes. These
are visible effects such as static, rainbow, pulsing, colour cycles.
Two sysfs attributes are added to asus-nb-wmi:
- keyboard_rgb_mode
- keyboard_rgb_mode_index
Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
---
drivers/platform/x86/asus-wmi.c | 83 +++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 233e73f4313d..4c2bdd9dac30 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -246,6 +246,7 @@ struct asus_wmi {
bool dgpu_disable_available;
bool dgpu_disable;
+ bool keyboard_rgb_mode_available;
struct keyboard_rgb_led keyboard_rgb_mode;
bool throttle_thermal_policy_available;
@@ -748,6 +749,77 @@ static ssize_t egpu_enable_store(struct device *dev,
static DEVICE_ATTR_RW(egpu_enable);
+/* TUF Laptop Keyboard RGB Modes **********************************************/
+static int keyboard_rgb_mode_check_present(struct asus_wmi *asus)
+{
+ u32 result;
+ int err;
+
+ asus->keyboard_rgb_mode_available = false;
+
+ err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_TUF_RGB_MODE, &result);
+ if (err) {
+ if (err == -ENODEV)
+ return 0;
+ return err;
+ }
+
+ if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
+ asus->keyboard_rgb_mode_available = true;
+
+ return 0;
+}
+
+static ssize_t keyboard_rgb_mode_store(struct device *device,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u8 save, mode, speed;
+ int err;
+
+ struct asus_wmi *asus = dev_get_drvdata(device);
+ struct led_classdev *cdev = &asus->keyboard_rgb_mode.dev.led_cdev;
+
+ if (sscanf(buf, "%hhd %hhd %hhd", &save, &mode, &speed) != 3)
+ return -EINVAL;
+
+ asus->keyboard_rgb_mode.save = !!save;
+
+ /* These are the known usable modes across all TUF/ROG */
+ asus->keyboard_rgb_mode.mode = mode < 12 && mode != 9 ? mode : 0x0a;
+
+ switch (speed) {
+ case 0:
+ asus->keyboard_rgb_mode.speed = 0xe1;
+ break;
+ case 1:
+ asus->keyboard_rgb_mode.speed = 0xeb;
+ break;
+ case 2:
+ asus->keyboard_rgb_mode.speed = 0xf5;
+ break;
+ default:
+ asus->keyboard_rgb_mode.speed = 0xeb;
+ }
+
+ err = tuf_rgb_brightness_set(cdev, cdev->brightness);
+ if (err)
+ return err;
+
+ return count;
+}
+
+static DEVICE_ATTR_WO(keyboard_rgb_mode);
+
+static ssize_t keyboard_rgb_mode_index_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n", "save mode speed");
+}
+
+static DEVICE_ATTR_RO(keyboard_rgb_mode_index);
+
/* Battery ********************************************************************/
/* The battery maximum charging percentage */
@@ -3338,6 +3410,8 @@ static struct attribute *platform_attributes[] = {
&dev_attr_touchpad.attr,
&dev_attr_egpu_enable.attr,
&dev_attr_dgpu_disable.attr,
+ &dev_attr_keyboard_rgb_mode.attr,
+ &dev_attr_keyboard_rgb_mode_index.attr,
&dev_attr_lid_resume.attr,
&dev_attr_als_enable.attr,
&dev_attr_fan_boost_mode.attr,
@@ -3368,6 +3442,10 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
ok = asus->egpu_enable_available;
else if (attr == &dev_attr_dgpu_disable.attr)
ok = asus->dgpu_disable_available;
+ else if (attr == &dev_attr_keyboard_rgb_mode.attr)
+ ok = asus->keyboard_rgb_mode_available;
+ else if (attr == &dev_attr_keyboard_rgb_mode_index.attr)
+ ok = asus->keyboard_rgb_mode_available;
else if (attr == &dev_attr_fan_boost_mode.attr)
ok = asus->fan_boost_mode_available;
else if (attr == &dev_attr_throttle_thermal_policy.attr)
@@ -3637,6 +3715,10 @@ static int asus_wmi_add(struct platform_device *pdev)
if (err)
goto fail_dgpu_disable;
+ err = keyboard_rgb_mode_check_present(asus);
+ if (err)
+ goto fail_keyboard_rgb_mode;
+
err = fan_boost_mode_check_present(asus);
if (err)
goto fail_fan_boost_mode;
@@ -3751,6 +3833,7 @@ static int asus_wmi_add(struct platform_device *pdev)
fail_fan_boost_mode:
fail_egpu_enable:
fail_dgpu_disable:
+fail_keyboard_rgb_mode:
fail_platform:
fail_panel_od:
kfree(asus);
--
2.37.1
