Adds support for changing the laptop keyboard LED mode and colour.
The modes are visible effects such as static, rainbow, pulsing,
colour cycles.
These sysfs attributes are added to asus::kbd_backlight:
- kbd_rgb_mode
- kbd_rgb_mode_index
Signed-off-by: Luke D. Jones <luke@xxxxxxxxxx>
---
drivers/platform/x86/asus-wmi.c | 76
+++++++++++++++++++++-
include/linux/platform_data/x86/asus-wmi.h | 3 +
2 files changed, 78 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/asus-wmi.c
b/drivers/platform/x86/asus-wmi.c
index 0f9f79f249c7..92f16bb9b4ef 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -237,6 +237,8 @@ struct asus_wmi {
bool dgpu_disable_available;
bool gpu_mux_mode_available;
+ bool kbd_rgb_mode_available;
+
bool throttle_thermal_policy_available;
u8 throttle_thermal_policy_mode;
@@ -720,6 +722,69 @@ static ssize_t gpu_mux_mode_store(struct
device *dev,
}
static DEVICE_ATTR_RW(gpu_mux_mode);
+/* TUF Laptop Keyboard RGB Modes
**********************************************/
+static ssize_t kbd_rgb_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ u32 cmd, mode, r, g, b, speed;
+ int err;
+
+ if (sscanf(buf, "%d %d %d %d %d %d", &cmd, &mode, &r, &g, &b,
&speed) != 6)
+ return -EINVAL;
+
+ cmd = !!cmd;
+
+ /* These are the known usable modes across all TUF/ROG */
+ if (mode >= 12 || mode == 9)
+ mode = 10;
+
+ switch (speed) {
+ case 0:
+ speed = 0xe1;
+ break;
+ case 1:
+ speed = 0xeb;
+ break;
+ case 2:
+ speed = 0xf5;
+ break;
+ default:
+ speed = 0xeb;
+ }
+
+ err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,
ASUS_WMI_DEVID_TUF_RGB_MODE,
+ cmd | (mode << 8) | (r << 16) | (g << 24), b | (speed << 8),
NULL);
+ if (err)
+ return err;
+
+ return count;
+}
+static DEVICE_ATTR_WO(kbd_rgb_mode);
+
+static ssize_t kbd_rgb_mode_index_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sysfs_emit(buf, "%s\n", "cmd mode red green blue speed");
+}
+static DEVICE_ATTR_RO(kbd_rgb_mode_index);
+
+static struct attribute *kbd_rgb_mode_attrs[] = {
+ &dev_attr_kbd_rgb_mode.attr,
+ &dev_attr_kbd_rgb_mode_index.attr,
+ NULL,
+};
+
+static const struct attribute_group kbd_rgb_mode_group = {
+ .attrs = kbd_rgb_mode_attrs,
+};
+
+const struct attribute_group *kbd_rgb_mode_groups[] = {
+ NULL,
+ NULL,
+};
+
/* Battery
********************************************************************/
/* The battery maximum charging percentage */
@@ -1038,7 +1103,10 @@ static void asus_wmi_led_exit(struct
asus_wmi *asus)
static int asus_wmi_led_init(struct asus_wmi *asus)
{
- int rv = 0, led_val;
+ int rv = 0, num_rgb_groups = 0, led_val;
+
+ if (asus->kbd_rgb_mode_available)
+ kbd_rgb_mode_groups[num_rgb_groups++] = &kbd_rgb_mode_group;
asus->led_workqueue =
create_singlethread_workqueue("led_workqueue");
if (!asus->led_workqueue)
@@ -1066,6 +1134,9 @@ static int asus_wmi_led_init(struct asus_wmi
*asus)
asus->kbd_led.brightness_get = kbd_led_get;
asus->kbd_led.max_brightness = 3;
+ if (num_rgb_groups != 0)
+ asus->kbd_led.groups = kbd_rgb_mode_groups;
+
rv = led_classdev_register(&asus->platform_device->dev,
&asus->kbd_led);
if (rv)
@@ -3253,6 +3324,8 @@ 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_dgpu_disable.attr)
+ ok = asus->dgpu_disable_available;
else if (attr == &dev_attr_gpu_mux_mode.attr)
ok = asus->gpu_mux_mode_available;
else if (attr == &dev_attr_fan_boost_mode.attr)
