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platform/x86: asus-wmi: Implement TUF laptop keyboard LED modes

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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@ljones.dev>
Link: https://lore.kernel.org/r/20220825232251.345893-2-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 2022-08-26 11:22:50 +12:00 committed by Hans de Goede
parent 12ff4c803d
commit e305a71cea
2 changed files with 76 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
drivers/platform/x86/asus-wmi.c
View File

@ -239,6 +239,8 @@ 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;
@ -722,6 +724,69 @@ 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 */
@ -1040,7 +1105,10 @@ 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)
@ -1068,6 +1136,9 @@ 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)
@ -3589,6 +3660,7 @@ static int asus_wmi_add(struct platform_device *pdev)
asus->egpu_enable_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_EGPU);
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);
asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
err = fan_boost_mode_check_present(asus);

3
include/linux/platform_data/x86/asus-wmi.h
View File

@ -104,6 +104,9 @@
/* gpu mux switch, 0 = dGPU, 1 = Optimus */
#define ASUS_WMI_DEVID_GPU_MUX 0x00090016
/* TUF laptop RGB modes/colours */
#define ASUS_WMI_DEVID_TUF_RGB_MODE 0x00100056
/* DSTS masks */
#define ASUS_WMI_DSTS_STATUS_BIT 0x00000001
#define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002