Commit 61f64515 authored by Luke D. Jones's avatar Luke D. Jones Committed by Hans de Goede
Browse files

platform/x86: asus-wmi: Implement TUF laptop keyboard power states 



Adds support for setting various power states of TUF keyboards.
These states are combinations of:
- boot, set if a boot animation is shown on keyboard
- awake, set if the keyboard LEDs are visible while laptop is on
- sleep, set if an animation is displayed while the laptop is suspended
- keyboard (unknown effect)

Adds two sysfs attributes to asus::kbd_backlight:
- kbd_rgb_state
- kbd_rgb_state_index

Signed-off-by: default avatarLuke D. Jones <luke@ljones.dev>
Link: https://lore.kernel.org/r/20220825232251.345893-3-luke@ljones.dev


Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent e305a71c

drivers/platform/x86/asus-wmi.c

+57 −0
Original line number Diff line number Diff line
@@ -240,6 +240,7 @@ struct asus_wmi { 
	bool gpu_mux_mode_available;



	bool kbd_rgb_mode_available;

	bool kbd_rgb_state_available;



	bool throttle_thermal_policy_available;

	u8 throttle_thermal_policy_mode;
@@ -782,9 +783,62 @@ static const struct attribute_group kbd_rgb_mode_group = { 
	.attrs = kbd_rgb_mode_attrs,

};



/* TUF Laptop Keyboard RGB State **********************************************/

static ssize_t kbd_rgb_state_store(struct device *dev,

				 struct device_attribute *attr,

				 const char *buf, size_t count)

{

	u32 flags, cmd, boot, awake, sleep, keyboard;

	int err;



	if (sscanf(buf, "%d %d %d %d %d", &cmd, &boot, &awake, &sleep, &keyboard) != 5)

		return -EINVAL;



	if (cmd)

		cmd = BIT(2);



	flags = 0;

	if (boot)

		flags |= BIT(1);

	if (awake)

		flags |= BIT(3);

	if (sleep)

		flags |= BIT(5);

	if (keyboard)

		flags |= BIT(7);



	/* 0xbd is the required default arg0 for the method. Nothing happens otherwise */

	err = asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS,

			ASUS_WMI_DEVID_TUF_RGB_STATE, 0xbd | cmd << 8 | (flags << 16), 0, NULL);

	if (err)

		return err;



	return count;

}

static DEVICE_ATTR_WO(kbd_rgb_state);



static ssize_t kbd_rgb_state_index_show(struct device *device,

						 struct device_attribute *attr,

						 char *buf)

{

	return sysfs_emit(buf, "%s\n", "cmd boot awake sleep keyboard");

}

static DEVICE_ATTR_RO(kbd_rgb_state_index);



static struct attribute *kbd_rgb_state_attrs[] = {

	&dev_attr_kbd_rgb_state.attr,

	&dev_attr_kbd_rgb_state_index.attr,

	NULL,

};



static const struct attribute_group kbd_rgb_state_group = {

	.attrs = kbd_rgb_state_attrs,

};



const struct attribute_group *kbd_rgb_mode_groups[] = {

	NULL,

	NULL,

	NULL,

};



/* Battery ********************************************************************/
@@ -1109,6 +1163,8 @@ static int asus_wmi_led_init(struct asus_wmi *asus) 


	if (asus->kbd_rgb_mode_available)

		kbd_rgb_mode_groups[num_rgb_groups++] = &kbd_rgb_mode_group;

	if (asus->kbd_rgb_state_available)

		kbd_rgb_mode_groups[num_rgb_groups++] = &kbd_rgb_state_group;



	asus->led_workqueue = create_singlethread_workqueue("led_workqueue");

	if (!asus->led_workqueue)
@@ -3661,6 +3717,7 @@ static int asus_wmi_add(struct platform_device *pdev) 
	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->kbd_rgb_state_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_STATE);

	asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);



	err = fan_boost_mode_check_present(asus);

include/linux/platform_data/x86/asus-wmi.h

+3 −0
Original line number Diff line number Diff line
@@ -107,6 +107,9 @@ 
/* TUF laptop RGB modes/colours */

#define ASUS_WMI_DEVID_TUF_RGB_MODE	0x00100056



/* TUF laptop RGB power/state */

#define ASUS_WMI_DEVID_TUF_RGB_STATE	0x00100057



/* DSTS masks */

#define ASUS_WMI_DSTS_STATUS_BIT	0x00000001

#define ASUS_WMI_DSTS_UNKNOWN_BIT	0x00000002