Valve Steam Deck

VID:PID 0x28de:0x1205

Vendor valve

Interfaces

ID	Class	EP IN	EP OUT
0	hid	—	—

Report: `main` (64 bytes, interface 0)

Match: byte[1] = 0x09

Fields

Name	Offset	Type	Transform
`touch1_y`	22	`i16le`	—
`touch0_y`	18	`i16le`	—
`accel_x`	24	`i16le`	—
`touch0_x`	16	`i16le`	—
`left_x`	48	`i16le`	—
`lt`	44	`u16le`	scale(0, 255)
`touch1_x`	20	`i16le`	—
`touch1_active`	bits[10,4,1]	`unsigned`	—
`touch0_active`	bits[10,3,1]	`unsigned`	—
`accel_y`	26	`i16le`	—
`accel_z`	28	`i16le`	—
`gyro_z`	34	`i16le`	—
`gyro_x`	30	`i16le`	—
`gyro_y`	32	`i16le`	—
`right_x`	52	`i16le`	—
`rt`	46	`u16le`	scale(0, 255)
`left_y`	50	`i16le`	negate
`right_y`	54	`i16le`	negate

Button Map

Source: offset 8, size 4 byte(s)

Button	Bit Index
`M2`	13
`LT`	1
`M1`	12
`DPadUp`	8
`RT`	0
`DPadRight`	9
`B`	5
`LS`	3
`RS`	2
`X`	6
`DPadLeft`	10
`DPadDown`	11
`A`	7
`Home`	17
`Select`	18
`M4`	15
`Y`	4
`M3`	14
`Start`	16

Commands

Name	Interface	Template
`rumble`	0	`8f 00 {strong:u8} 00 00 10 00 01 00...`

Output Capabilities

uinput device name: Valve Steam Deck | VID 0x28de | PID 0x1205

Axes

Field	Code	Min	Max	Fuzz	Flat
`lt`	`ABS_Z`	0	255	0	0
`left_x`	`ABS_X`	-32768	32767	16	128
`rt`	`ABS_RZ`	0	255	0	0
`right_x`	`ABS_RX`	-32768	32767	16	128
`left_y`	`ABS_Y`	-32768	32767	16	128
`right_y`	`ABS_RY`	-32768	32767	16	128

Buttons

Button	Event Code
`M2`	`BTN_TRIGGER_HAPPY2`
`LT`	`BTN_TL2`
`M1`	`BTN_TRIGGER_HAPPY1`
`RT`	`BTN_TR2`
`B`	`BTN_EAST`
`LS`	`BTN_THUMBL`
`RS`	`BTN_THUMBR`
`X`	`BTN_WEST`
`A`	`BTN_SOUTH`
`Select`	`BTN_SELECT`
`Home`	`BTN_MODE`
`Start`	`BTN_START`
`Y`	`BTN_NORTH`
`M3`	`BTN_TRIGGER_HAPPY3`
`M4`	`BTN_TRIGGER_HAPPY4`

Force feedback: type=rumble, max_effects=4