* HID driver for Valve Steam Controller
*
* Copyright (c) 2018 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
+ * Copyright (c) 2022 Valve Software
*
* Supports both the wired and wireless interfaces.
*
static LIST_HEAD(steam_devices);
#define STEAM_QUIRK_WIRELESS BIT(0)
+#define STEAM_QUIRK_DECK BIT(1)
/* Touch pads are 40 mm in diameter and 65535 units */
#define STEAM_PAD_RESOLUTION 1638
#define STEAM_TRIGGER_RESOLUTION 51
/* Joystick runs are about 5 mm and 256 units */
#define STEAM_JOYSTICK_RESOLUTION 51
+/* Trigger runs are about 6 mm and 32768 units */
+#define STEAM_DECK_TRIGGER_RESOLUTION 5461
+/* Joystick runs are about 5 mm and 32768 units */
+#define STEAM_DECK_JOYSTICK_RESOLUTION 6553
#define STEAM_PAD_FUZZ 256
#define STEAM_REG_RPAD_MARGIN 0x18
#define STEAM_REG_LED 0x2d
#define STEAM_REG_GYRO_MODE 0x30
+#define STEAM_REG_LPAD_CLICK_PRESSURE 0x34
+#define STEAM_REG_RPAD_CLICK_PRESSURE 0x35
/* Raw event identifiers */
#define STEAM_EV_INPUT_DATA 0x01
#define STEAM_EV_CONNECT 0x03
#define STEAM_EV_BATTERY 0x04
+#define STEAM_EV_DECK_INPUT_DATA 0x09
/* Values for GYRO_MODE (bitmask) */
#define STEAM_GYRO_MODE_OFF 0x0000
struct power_supply __rcu *battery;
u8 battery_charge;
u16 voltage;
+ struct delayed_work heartbeat;
};
static int steam_recv_report(struct steam_device *steam,
*/
do {
ret = hid_hw_raw_request(steam->hdev, 0,
- buf, size + 1,
+ buf, max(size, 64) + 1,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
if (ret != -EPIPE)
break;
u8 reg;
u16 val;
u8 cmd[64] = {STEAM_CMD_WRITE_REGISTER, 0x00};
+ int ret;
va_list args;
va_start(args, steam);
}
va_end(args);
- return steam_send_report(steam, cmd, 2 + cmd[1]);
+ ret = steam_send_report(steam, cmd, 2 + cmd[1]);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Sometimes a lingering report for this command can
+ * get read back instead of the last set report if
+ * this isn't explicitly queried
+ */
+ return steam_recv_report(steam, cmd, 2 + cmd[1]);
}
static int steam_get_serial(struct steam_device *steam)
steam_write_registers(steam,
STEAM_REG_RPAD_MARGIN, 0x01, /* enable margin */
0);
+
+ cancel_delayed_work_sync(&steam->heartbeat);
} else {
/* disable esc, enter, cursor */
steam_send_report_byte(steam, STEAM_CMD_CLEAR_MAPPINGS);
- steam_write_registers(steam,
- STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
- STEAM_REG_RPAD_MARGIN, 0x00, /* disable margin */
- 0);
+
+ if (steam->quirks & STEAM_QUIRK_DECK) {
+ steam_write_registers(steam,
+ STEAM_REG_RPAD_MARGIN, 0x00, /* disable margin */
+ STEAM_REG_LPAD_MODE, 0x07, /* disable mouse */
+ STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
+ STEAM_REG_LPAD_CLICK_PRESSURE, 0xFFFF, /* disable clicky pad */
+ STEAM_REG_RPAD_CLICK_PRESSURE, 0xFFFF, /* disable clicky pad */
+ 0);
+ /*
+ * The Steam Deck has a watchdog that automatically enables
+ * lizard mode if it doesn't see any traffic for too long
+ */
+ if (!work_busy(&steam->heartbeat.work))
+ schedule_delayed_work(&steam->heartbeat, 5 * HZ);
+ } else {
+ steam_write_registers(steam,
+ STEAM_REG_RPAD_MARGIN, 0x00, /* disable margin */
+ STEAM_REG_LPAD_MODE, 0x07, /* disable mouse */
+ STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
+ 0);
+ }
}
}
input->open = steam_input_open;
input->close = steam_input_close;
- input->name = (steam->quirks & STEAM_QUIRK_WIRELESS) ?
- "Wireless Steam Controller" :
+ input->name = (steam->quirks & STEAM_QUIRK_WIRELESS) ? "Wireless Steam Controller" :
+ (steam->quirks & STEAM_QUIRK_DECK) ? "Steam Deck" :
"Steam Controller";
input->phys = hdev->phys;
input->uniq = steam->serial_no;
input_set_capability(input, EV_KEY, BTN_SELECT);
input_set_capability(input, EV_KEY, BTN_MODE);
input_set_capability(input, EV_KEY, BTN_START);
- input_set_capability(input, EV_KEY, BTN_GEAR_DOWN);
- input_set_capability(input, EV_KEY, BTN_GEAR_UP);
input_set_capability(input, EV_KEY, BTN_THUMBR);
input_set_capability(input, EV_KEY, BTN_THUMBL);
input_set_capability(input, EV_KEY, BTN_THUMB);
input_set_capability(input, EV_KEY, BTN_THUMB2);
+ if (steam->quirks & STEAM_QUIRK_DECK) {
+ input_set_capability(input, EV_KEY, BTN_BASE);
+ input_set_capability(input, EV_KEY, BTN_TRIGGER_HAPPY1);
+ input_set_capability(input, EV_KEY, BTN_TRIGGER_HAPPY2);
+ input_set_capability(input, EV_KEY, BTN_TRIGGER_HAPPY3);
+ input_set_capability(input, EV_KEY, BTN_TRIGGER_HAPPY4);
+ } else {
+ input_set_capability(input, EV_KEY, BTN_GEAR_DOWN);
+ input_set_capability(input, EV_KEY, BTN_GEAR_UP);
+ }
- input_set_abs_params(input, ABS_HAT2Y, 0, 255, 0, 0);
- input_set_abs_params(input, ABS_HAT2X, 0, 255, 0, 0);
input_set_abs_params(input, ABS_X, -32767, 32767, 0, 0);
input_set_abs_params(input, ABS_Y, -32767, 32767, 0, 0);
- input_set_abs_params(input, ABS_RX, -32767, 32767,
- STEAM_PAD_FUZZ, 0);
- input_set_abs_params(input, ABS_RY, -32767, 32767,
- STEAM_PAD_FUZZ, 0);
+
input_set_abs_params(input, ABS_HAT0X, -32767, 32767,
STEAM_PAD_FUZZ, 0);
input_set_abs_params(input, ABS_HAT0Y, -32767, 32767,
STEAM_PAD_FUZZ, 0);
- input_abs_set_res(input, ABS_X, STEAM_JOYSTICK_RESOLUTION);
- input_abs_set_res(input, ABS_Y, STEAM_JOYSTICK_RESOLUTION);
- input_abs_set_res(input, ABS_RX, STEAM_PAD_RESOLUTION);
- input_abs_set_res(input, ABS_RY, STEAM_PAD_RESOLUTION);
+
+ if (steam->quirks & STEAM_QUIRK_DECK) {
+ input_set_abs_params(input, ABS_HAT2Y, 0, 32767, 0, 0);
+ input_set_abs_params(input, ABS_HAT2X, 0, 32767, 0, 0);
+
+ input_set_abs_params(input, ABS_RX, -32767, 32767, 0, 0);
+ input_set_abs_params(input, ABS_RY, -32767, 32767, 0, 0);
+
+ input_set_abs_params(input, ABS_HAT1X, -32767, 32767,
+ STEAM_PAD_FUZZ, 0);
+ input_set_abs_params(input, ABS_HAT1Y, -32767, 32767,
+ STEAM_PAD_FUZZ, 0);
+
+ input_abs_set_res(input, ABS_X, STEAM_DECK_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_Y, STEAM_DECK_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_RX, STEAM_DECK_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_RY, STEAM_DECK_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT1X, STEAM_PAD_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT1Y, STEAM_PAD_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT2Y, STEAM_DECK_TRIGGER_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT2X, STEAM_DECK_TRIGGER_RESOLUTION);
+ } else {
+ input_set_abs_params(input, ABS_HAT2Y, 0, 255, 0, 0);
+ input_set_abs_params(input, ABS_HAT2X, 0, 255, 0, 0);
+
+ input_set_abs_params(input, ABS_RX, -32767, 32767,
+ STEAM_PAD_FUZZ, 0);
+ input_set_abs_params(input, ABS_RY, -32767, 32767,
+ STEAM_PAD_FUZZ, 0);
+
+ input_abs_set_res(input, ABS_X, STEAM_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_Y, STEAM_JOYSTICK_RESOLUTION);
+ input_abs_set_res(input, ABS_RX, STEAM_PAD_RESOLUTION);
+ input_abs_set_res(input, ABS_RY, STEAM_PAD_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT2Y, STEAM_TRIGGER_RESOLUTION);
+ input_abs_set_res(input, ABS_HAT2X, STEAM_TRIGGER_RESOLUTION);
+ }
input_abs_set_res(input, ABS_HAT0X, STEAM_PAD_RESOLUTION);
input_abs_set_res(input, ABS_HAT0Y, STEAM_PAD_RESOLUTION);
- input_abs_set_res(input, ABS_HAT2Y, STEAM_TRIGGER_RESOLUTION);
- input_abs_set_res(input, ABS_HAT2X, STEAM_TRIGGER_RESOLUTION);
ret = input_register_device(input);
if (ret)
return !list_empty(&rep_enum->report_list);
}
+static void steam_lizard_mode_heartbeat(struct work_struct *work)
+{
+ struct steam_device *steam = container_of(work, struct steam_device,
+ heartbeat.work);
+
+ mutex_lock(&steam->mutex);
+ if (!steam->client_opened && steam->client_hdev) {
+ steam_send_report_byte(steam, STEAM_CMD_CLEAR_MAPPINGS);
+ steam_write_registers(steam,
+ STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
+ 0);
+ schedule_delayed_work(&steam->heartbeat, 5 * HZ);
+ }
+ mutex_unlock(&steam->mutex);
+}
+
static int steam_client_ll_parse(struct hid_device *hdev)
{
struct steam_device *steam = hdev->driver_data;
steam->quirks = id->driver_data;
INIT_WORK(&steam->work_connect, steam_work_connect_cb);
INIT_LIST_HEAD(&steam->list);
+ INIT_DEFERRABLE_WORK(&steam->heartbeat, steam_lizard_mode_heartbeat);
steam->client_hdev = steam_create_client_hid(hdev);
if (IS_ERR(steam->client_hdev)) {
hid_destroy_device(steam->client_hdev);
client_hdev_fail:
cancel_work_sync(&steam->work_connect);
+ cancel_delayed_work_sync(&steam->heartbeat);
steam_alloc_fail:
hid_err(hdev, "%s: failed with error %d\n",
__func__, ret);
}
hid_destroy_device(steam->client_hdev);
+ mutex_lock(&steam->mutex);
+ steam->client_hdev = NULL;
steam->client_opened = false;
+ cancel_delayed_work_sync(&steam->heartbeat);
+ mutex_unlock(&steam->mutex);
cancel_work_sync(&steam->work_connect);
if (steam->quirks & STEAM_QUIRK_WIRELESS) {
hid_info(hdev, "Steam wireless receiver disconnected");
* 8.5 | BTN_B | button B
* 8.6 | BTN_X | button X
* 8.7 | BTN_A | button A
- * 9.0 | BTN_DPAD_UP | lef-pad up
- * 9.1 | BTN_DPAD_RIGHT | lef-pad right
- * 9.2 | BTN_DPAD_LEFT | lef-pad left
- * 9.3 | BTN_DPAD_DOWN | lef-pad down
+ * 9.0 | BTN_DPAD_UP | left-pad up
+ * 9.1 | BTN_DPAD_RIGHT | left-pad right
+ * 9.2 | BTN_DPAD_LEFT | left-pad left
+ * 9.3 | BTN_DPAD_DOWN | left-pad down
* 9.4 | BTN_SELECT | menu left
* 9.5 | BTN_MODE | steam logo
* 9.6 | BTN_START | menu right
input_sync(input);
}
+/*
+ * The size for this message payload is 56.
+ * The known values are:
+ * Offset| Type | Mapped to |Meaning
+ * -------+-------+-----------+--------------------------
+ * 4-7 | u32 | -- | sequence number
+ * 8-15 | u64 | see below | buttons
+ * 16-17 | s16 | ABS_HAT0X | left-pad X value
+ * 18-19 | s16 | ABS_HAT0Y | left-pad Y value
+ * 20-21 | s16 | ABS_HAT1X | right-pad X value
+ * 22-23 | s16 | ABS_HAT1Y | right-pad Y value
+ * 24-25 | s16 | -- | accelerometer X value
+ * 26-27 | s16 | -- | accelerometer Y value
+ * 28-29 | s16 | -- | accelerometer Z value
+ * 30-31 | s16 | -- | gyro X value
+ * 32-33 | s16 | -- | gyro Y value
+ * 34-35 | s16 | -- | gyro Z value
+ * 36-37 | s16 | -- | quaternion W value
+ * 38-39 | s16 | -- | quaternion X value
+ * 40-41 | s16 | -- | quaternion Y value
+ * 42-43 | s16 | -- | quaternion Z value
+ * 44-45 | u16 | ABS_HAT2Y | left trigger (uncalibrated)
+ * 46-47 | u16 | ABS_HAT2X | right trigger (uncalibrated)
+ * 48-49 | s16 | ABS_X | left joystick X
+ * 50-51 | s16 | ABS_Y | left joystick Y
+ * 52-53 | s16 | ABS_RX | right joystick X
+ * 54-55 | s16 | ABS_RY | right joystick Y
+ * 56-57 | u16 | -- | left pad pressure
+ * 58-59 | u16 | -- | right pad pressure
+ *
+ * The buttons are:
+ * Bit | Mapped to | Description
+ * ------+------------+--------------------------------
+ * 8.0 | BTN_TR2 | right trigger fully pressed
+ * 8.1 | BTN_TL2 | left trigger fully pressed
+ * 8.2 | BTN_TR | right shoulder
+ * 8.3 | BTN_TL | left shoulder
+ * 8.4 | BTN_Y | button Y
+ * 8.5 | BTN_B | button B
+ * 8.6 | BTN_X | button X
+ * 8.7 | BTN_A | button A
+ * 9.0 | BTN_DPAD_UP | left-pad up
+ * 9.1 | BTN_DPAD_RIGHT | left-pad right
+ * 9.2 | BTN_DPAD_LEFT | left-pad left
+ * 9.3 | BTN_DPAD_DOWN | left-pad down
+ * 9.4 | BTN_SELECT | menu left
+ * 9.5 | BTN_MODE | steam logo
+ * 9.6 | BTN_START | menu right
+ * 9.7 | BTN_TRIGGER_HAPPY3 | left bottom grip button
+ * 10.0 | BTN_TRIGGER_HAPPY4 | right bottom grip button
+ * 10.1 | BTN_THUMB | left pad pressed
+ * 10.2 | BTN_THUMB2 | right pad pressed
+ * 10.3 | -- | left pad touched
+ * 10.4 | -- | right pad touched
+ * 10.5 | -- | unknown
+ * 10.6 | BTN_THUMBL | left joystick clicked
+ * 10.7 | -- | unknown
+ * 11.0 | -- | unknown
+ * 11.1 | -- | unknown
+ * 11.2 | BTN_THUMBR | right joystick clicked
+ * 11.3 | -- | unknown
+ * 11.4 | -- | unknown
+ * 11.5 | -- | unknown
+ * 11.6 | -- | unknown
+ * 11.7 | -- | unknown
+ * 12.0 | -- | unknown
+ * 12.1 | -- | unknown
+ * 12.2 | -- | unknown
+ * 12.3 | -- | unknown
+ * 12.4 | -- | unknown
+ * 12.5 | -- | unknown
+ * 12.6 | -- | unknown
+ * 12.7 | -- | unknown
+ * 13.0 | -- | unknown
+ * 13.1 | BTN_TRIGGER_HAPPY1 | left top grip button
+ * 13.2 | BTN_TRIGGER_HAPPY2 | right top grip button
+ * 13.3 | -- | unknown
+ * 13.4 | -- | unknown
+ * 13.5 | -- | unknown
+ * 13.6 | -- | left joystick touched
+ * 13.7 | -- | right joystick touched
+ * 14.0 | -- | unknown
+ * 14.1 | -- | unknown
+ * 14.2 | BTN_BASE | quick access button
+ * 14.3 | -- | unknown
+ * 14.4 | -- | unknown
+ * 14.5 | -- | unknown
+ * 14.6 | -- | unknown
+ * 14.7 | -- | unknown
+ * 15.0 | -- | unknown
+ * 15.1 | -- | unknown
+ * 15.2 | -- | unknown
+ * 15.3 | -- | unknown
+ * 15.4 | -- | unknown
+ * 15.5 | -- | unknown
+ * 15.6 | -- | unknown
+ * 15.7 | -- | unknown
+ */
+static void steam_do_deck_input_event(struct steam_device *steam,
+ struct input_dev *input, u8 *data)
+{
+ u8 b8, b9, b10, b11, b13, b14;
+ bool lpad_touched, rpad_touched;
+
+ b8 = data[8];
+ b9 = data[9];
+ b10 = data[10];
+ b11 = data[11];
+ b13 = data[13];
+ b14 = data[14];
+
+ lpad_touched = b10 & BIT(3);
+ rpad_touched = b10 & BIT(4);
+
+ if (lpad_touched) {
+ input_report_abs(input, ABS_HAT0X, steam_le16(data + 16));
+ input_report_abs(input, ABS_HAT0Y, steam_le16(data + 18));
+ } else {
+ input_report_abs(input, ABS_HAT0X, 0);
+ input_report_abs(input, ABS_HAT0Y, 0);
+ }
+
+ if (rpad_touched) {
+ input_report_abs(input, ABS_HAT1X, steam_le16(data + 20));
+ input_report_abs(input, ABS_HAT1Y, steam_le16(data + 22));
+ } else {
+ input_report_abs(input, ABS_HAT1X, 0);
+ input_report_abs(input, ABS_HAT1Y, 0);
+ }
+
+ input_report_abs(input, ABS_X, steam_le16(data + 48));
+ input_report_abs(input, ABS_Y, -steam_le16(data + 50));
+ input_report_abs(input, ABS_RX, steam_le16(data + 52));
+ input_report_abs(input, ABS_RY, -steam_le16(data + 54));
+
+ input_report_abs(input, ABS_HAT2Y, steam_le16(data + 44));
+ input_report_abs(input, ABS_HAT2X, steam_le16(data + 46));
+
+ input_event(input, EV_KEY, BTN_TR2, !!(b8 & BIT(0)));
+ input_event(input, EV_KEY, BTN_TL2, !!(b8 & BIT(1)));
+ input_event(input, EV_KEY, BTN_TR, !!(b8 & BIT(2)));
+ input_event(input, EV_KEY, BTN_TL, !!(b8 & BIT(3)));
+ input_event(input, EV_KEY, BTN_Y, !!(b8 & BIT(4)));
+ input_event(input, EV_KEY, BTN_B, !!(b8 & BIT(5)));
+ input_event(input, EV_KEY, BTN_X, !!(b8 & BIT(6)));
+ input_event(input, EV_KEY, BTN_A, !!(b8 & BIT(7)));
+ input_event(input, EV_KEY, BTN_SELECT, !!(b9 & BIT(4)));
+ input_event(input, EV_KEY, BTN_MODE, !!(b9 & BIT(5)));
+ input_event(input, EV_KEY, BTN_START, !!(b9 & BIT(6)));
+ input_event(input, EV_KEY, BTN_TRIGGER_HAPPY3, !!(b9 & BIT(7)));
+ input_event(input, EV_KEY, BTN_TRIGGER_HAPPY4, !!(b10 & BIT(0)));
+ input_event(input, EV_KEY, BTN_THUMBL, !!(b10 & BIT(6)));
+ input_event(input, EV_KEY, BTN_THUMBR, !!(b11 & BIT(2)));
+ input_event(input, EV_KEY, BTN_DPAD_UP, !!(b9 & BIT(0)));
+ input_event(input, EV_KEY, BTN_DPAD_RIGHT, !!(b9 & BIT(1)));
+ input_event(input, EV_KEY, BTN_DPAD_LEFT, !!(b9 & BIT(2)));
+ input_event(input, EV_KEY, BTN_DPAD_DOWN, !!(b9 & BIT(3)));
+ input_event(input, EV_KEY, BTN_THUMB, !!(b10 & BIT(1)));
+ input_event(input, EV_KEY, BTN_THUMB2, !!(b10 & BIT(2)));
+ input_event(input, EV_KEY, BTN_TRIGGER_HAPPY1, !!(b13 & BIT(1)));
+ input_event(input, EV_KEY, BTN_TRIGGER_HAPPY2, !!(b13 & BIT(2)));
+ input_event(input, EV_KEY, BTN_BASE, !!(b14 & BIT(2)));
+
+ input_sync(input);
+}
+
/*
* The size for this message payload is 11.
* The known values are:
* 0x01: input data (60 bytes)
* 0x03: wireless connect/disconnect (1 byte)
* 0x04: battery status (11 bytes)
+ * 0x09: Steam Deck input data (56 bytes)
*/
if (size != 64 || data[0] != 1 || data[1] != 0)
steam_do_input_event(steam, input, data);
rcu_read_unlock();
break;
+ case STEAM_EV_DECK_INPUT_DATA:
+ if (steam->client_opened)
+ return 0;
+ rcu_read_lock();
+ input = rcu_dereference(steam->input);
+ if (likely(input))
+ steam_do_deck_input_event(steam, input, data);
+ rcu_read_unlock();
+ break;
case STEAM_EV_CONNECT:
/*
* The payload of this event is a single byte:
USB_DEVICE_ID_STEAM_CONTROLLER_WIRELESS),
.driver_data = STEAM_QUIRK_WIRELESS
},
+ { /* Steam Deck */
+ HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
+ USB_DEVICE_ID_STEAM_DECK),
+ .driver_data = STEAM_QUIRK_DECK
+ },
{}
};
projects / linux.git / commitdiff