|
|
@@ -0,0 +1,1115 @@
|
|
|
+// SPDX-License-Identifier: GPL-2.0+
|
|
|
+/*
|
|
|
+ * HID driver for Valve Steam Controller
|
|
|
+ *
|
|
|
+ * Copyright (c) 2018 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
|
|
|
+ *
|
|
|
+ * Supports both the wired and wireless interfaces.
|
|
|
+ *
|
|
|
+ * This controller has a builtin emulation of mouse and keyboard: the right pad
|
|
|
+ * can be used as a mouse, the shoulder buttons are mouse buttons, A and B
|
|
|
+ * buttons are ENTER and ESCAPE, and so on. This is implemented as additional
|
|
|
+ * HID interfaces.
|
|
|
+ *
|
|
|
+ * This is known as the "lizard mode", because apparently lizards like to use
|
|
|
+ * the computer from the coach, without a proper mouse and keyboard.
|
|
|
+ *
|
|
|
+ * This driver will disable the lizard mode when the input device is opened
|
|
|
+ * and re-enable it when the input device is closed, so as not to break user
|
|
|
+ * mode behaviour. The lizard_mode parameter can be used to change that.
|
|
|
+ *
|
|
|
+ * There are a few user space applications (notably Steam Client) that use
|
|
|
+ * the hidraw interface directly to create input devices (XTest, uinput...).
|
|
|
+ * In order to avoid breaking them this driver creates a layered hidraw device,
|
|
|
+ * so it can detect when the client is running and then:
|
|
|
+ * - it will not send any command to the controller.
|
|
|
+ * - this input device will be disabled, to avoid double input of the same
|
|
|
+ * user action.
|
|
|
+ *
|
|
|
+ * For additional functions, such as changing the right-pad margin or switching
|
|
|
+ * the led, you can use the user-space tool at:
|
|
|
+ *
|
|
|
+ * https://github.com/rodrigorc/steamctrl
|
|
|
+ */
|
|
|
+
|
|
|
+#include <linux/device.h>
|
|
|
+#include <linux/input.h>
|
|
|
+#include <linux/hid.h>
|
|
|
+#include <linux/module.h>
|
|
|
+#include <linux/workqueue.h>
|
|
|
+#include <linux/mutex.h>
|
|
|
+#include <linux/rcupdate.h>
|
|
|
+#include <linux/delay.h>
|
|
|
+#include <linux/power_supply.h>
|
|
|
+#include "hid-ids.h"
|
|
|
+
|
|
|
+MODULE_LICENSE("GPL");
|
|
|
+MODULE_AUTHOR("Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>");
|
|
|
+
|
|
|
+static bool lizard_mode = true;
|
|
|
+
|
|
|
+static DEFINE_MUTEX(steam_devices_lock);
|
|
|
+static LIST_HEAD(steam_devices);
|
|
|
+
|
|
|
+#define STEAM_QUIRK_WIRELESS BIT(0)
|
|
|
+
|
|
|
+/* Touch pads are 40 mm in diameter and 65535 units */
|
|
|
+#define STEAM_PAD_RESOLUTION 1638
|
|
|
+/* Trigger runs are about 5 mm and 256 units */
|
|
|
+#define STEAM_TRIGGER_RESOLUTION 51
|
|
|
+/* Joystick runs are about 5 mm and 256 units */
|
|
|
+#define STEAM_JOYSTICK_RESOLUTION 51
|
|
|
+
|
|
|
+#define STEAM_PAD_FUZZ 256
|
|
|
+
|
|
|
+/*
|
|
|
+ * Commands that can be sent in a feature report.
|
|
|
+ * Thanks to Valve for some valuable hints.
|
|
|
+ */
|
|
|
+#define STEAM_CMD_SET_MAPPINGS 0x80
|
|
|
+#define STEAM_CMD_CLEAR_MAPPINGS 0x81
|
|
|
+#define STEAM_CMD_GET_MAPPINGS 0x82
|
|
|
+#define STEAM_CMD_GET_ATTRIB 0x83
|
|
|
+#define STEAM_CMD_GET_ATTRIB_LABEL 0x84
|
|
|
+#define STEAM_CMD_DEFAULT_MAPPINGS 0x85
|
|
|
+#define STEAM_CMD_FACTORY_RESET 0x86
|
|
|
+#define STEAM_CMD_WRITE_REGISTER 0x87
|
|
|
+#define STEAM_CMD_CLEAR_REGISTER 0x88
|
|
|
+#define STEAM_CMD_READ_REGISTER 0x89
|
|
|
+#define STEAM_CMD_GET_REGISTER_LABEL 0x8a
|
|
|
+#define STEAM_CMD_GET_REGISTER_MAX 0x8b
|
|
|
+#define STEAM_CMD_GET_REGISTER_DEFAULT 0x8c
|
|
|
+#define STEAM_CMD_SET_MODE 0x8d
|
|
|
+#define STEAM_CMD_DEFAULT_MOUSE 0x8e
|
|
|
+#define STEAM_CMD_FORCEFEEDBAK 0x8f
|
|
|
+#define STEAM_CMD_REQUEST_COMM_STATUS 0xb4
|
|
|
+#define STEAM_CMD_GET_SERIAL 0xae
|
|
|
+
|
|
|
+/* Some useful register ids */
|
|
|
+#define STEAM_REG_LPAD_MODE 0x07
|
|
|
+#define STEAM_REG_RPAD_MODE 0x08
|
|
|
+#define STEAM_REG_RPAD_MARGIN 0x18
|
|
|
+#define STEAM_REG_LED 0x2d
|
|
|
+#define STEAM_REG_GYRO_MODE 0x30
|
|
|
+
|
|
|
+/* Raw event identifiers */
|
|
|
+#define STEAM_EV_INPUT_DATA 0x01
|
|
|
+#define STEAM_EV_CONNECT 0x03
|
|
|
+#define STEAM_EV_BATTERY 0x04
|
|
|
+
|
|
|
+/* Values for GYRO_MODE (bitmask) */
|
|
|
+#define STEAM_GYRO_MODE_OFF 0x0000
|
|
|
+#define STEAM_GYRO_MODE_STEERING 0x0001
|
|
|
+#define STEAM_GYRO_MODE_TILT 0x0002
|
|
|
+#define STEAM_GYRO_MODE_SEND_ORIENTATION 0x0004
|
|
|
+#define STEAM_GYRO_MODE_SEND_RAW_ACCEL 0x0008
|
|
|
+#define STEAM_GYRO_MODE_SEND_RAW_GYRO 0x0010
|
|
|
+
|
|
|
+/* Other random constants */
|
|
|
+#define STEAM_SERIAL_LEN 10
|
|
|
+
|
|
|
+struct steam_device {
|
|
|
+ struct list_head list;
|
|
|
+ spinlock_t lock;
|
|
|
+ struct hid_device *hdev, *client_hdev;
|
|
|
+ struct mutex mutex;
|
|
|
+ bool client_opened, input_opened;
|
|
|
+ struct input_dev __rcu *input;
|
|
|
+ unsigned long quirks;
|
|
|
+ struct work_struct work_connect;
|
|
|
+ bool connected;
|
|
|
+ char serial_no[STEAM_SERIAL_LEN + 1];
|
|
|
+ struct power_supply_desc battery_desc;
|
|
|
+ struct power_supply __rcu *battery;
|
|
|
+ u8 battery_charge;
|
|
|
+ u16 voltage;
|
|
|
+};
|
|
|
+
|
|
|
+static int steam_recv_report(struct steam_device *steam,
|
|
|
+ u8 *data, int size)
|
|
|
+{
|
|
|
+ struct hid_report *r;
|
|
|
+ u8 *buf;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0];
|
|
|
+ if (hid_report_len(r) < 64)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ buf = hid_alloc_report_buf(r, GFP_KERNEL);
|
|
|
+ if (!buf)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * The report ID is always 0, so strip the first byte from the output.
|
|
|
+ * hid_report_len() is not counting the report ID, so +1 to the length
|
|
|
+ * or else we get a EOVERFLOW. We are safe from a buffer overflow
|
|
|
+ * because hid_alloc_report_buf() allocates +7 bytes.
|
|
|
+ */
|
|
|
+ ret = hid_hw_raw_request(steam->hdev, 0x00,
|
|
|
+ buf, hid_report_len(r) + 1,
|
|
|
+ HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
|
|
|
+ if (ret > 0)
|
|
|
+ memcpy(data, buf + 1, min(size, ret - 1));
|
|
|
+ kfree(buf);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_send_report(struct steam_device *steam,
|
|
|
+ u8 *cmd, int size)
|
|
|
+{
|
|
|
+ struct hid_report *r;
|
|
|
+ u8 *buf;
|
|
|
+ unsigned int retries = 50;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0];
|
|
|
+ if (hid_report_len(r) < 64)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ buf = hid_alloc_report_buf(r, GFP_KERNEL);
|
|
|
+ if (!buf)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ /* The report ID is always 0 */
|
|
|
+ memcpy(buf + 1, cmd, size);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Sometimes the wireless controller fails with EPIPE
|
|
|
+ * when sending a feature report.
|
|
|
+ * Doing a HID_REQ_GET_REPORT and waiting for a while
|
|
|
+ * seems to fix that.
|
|
|
+ */
|
|
|
+ do {
|
|
|
+ ret = hid_hw_raw_request(steam->hdev, 0,
|
|
|
+ buf, size + 1,
|
|
|
+ HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
|
|
|
+ if (ret != -EPIPE)
|
|
|
+ break;
|
|
|
+ msleep(20);
|
|
|
+ } while (--retries);
|
|
|
+
|
|
|
+ kfree(buf);
|
|
|
+ if (ret < 0)
|
|
|
+ hid_err(steam->hdev, "%s: error %d (%*ph)\n", __func__,
|
|
|
+ ret, size, cmd);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static inline int steam_send_report_byte(struct steam_device *steam, u8 cmd)
|
|
|
+{
|
|
|
+ return steam_send_report(steam, &cmd, 1);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_write_registers(struct steam_device *steam,
|
|
|
+ /* u8 reg, u16 val */...)
|
|
|
+{
|
|
|
+ /* Send: 0x87 len (reg valLo valHi)* */
|
|
|
+ u8 reg;
|
|
|
+ u16 val;
|
|
|
+ u8 cmd[64] = {STEAM_CMD_WRITE_REGISTER, 0x00};
|
|
|
+ va_list args;
|
|
|
+
|
|
|
+ va_start(args, steam);
|
|
|
+ for (;;) {
|
|
|
+ reg = va_arg(args, int);
|
|
|
+ if (reg == 0)
|
|
|
+ break;
|
|
|
+ val = va_arg(args, int);
|
|
|
+ cmd[cmd[1] + 2] = reg;
|
|
|
+ cmd[cmd[1] + 3] = val & 0xff;
|
|
|
+ cmd[cmd[1] + 4] = val >> 8;
|
|
|
+ cmd[1] += 3;
|
|
|
+ }
|
|
|
+ va_end(args);
|
|
|
+
|
|
|
+ return steam_send_report(steam, cmd, 2 + cmd[1]);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_get_serial(struct steam_device *steam)
|
|
|
+{
|
|
|
+ /*
|
|
|
+ * Send: 0xae 0x15 0x01
|
|
|
+ * Recv: 0xae 0x15 0x01 serialnumber (10 chars)
|
|
|
+ */
|
|
|
+ int ret;
|
|
|
+ u8 cmd[] = {STEAM_CMD_GET_SERIAL, 0x15, 0x01};
|
|
|
+ u8 reply[3 + STEAM_SERIAL_LEN + 1];
|
|
|
+
|
|
|
+ ret = steam_send_report(steam, cmd, sizeof(cmd));
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+ ret = steam_recv_report(steam, reply, sizeof(reply));
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+ if (reply[0] != 0xae || reply[1] != 0x15 || reply[2] != 0x01)
|
|
|
+ return -EIO;
|
|
|
+ reply[3 + STEAM_SERIAL_LEN] = 0;
|
|
|
+ strlcpy(steam->serial_no, reply + 3, sizeof(steam->serial_no));
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * This command requests the wireless adaptor to post an event
|
|
|
+ * with the connection status. Useful if this driver is loaded when
|
|
|
+ * the controller is already connected.
|
|
|
+ */
|
|
|
+static inline int steam_request_conn_status(struct steam_device *steam)
|
|
|
+{
|
|
|
+ return steam_send_report_byte(steam, STEAM_CMD_REQUEST_COMM_STATUS);
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_set_lizard_mode(struct steam_device *steam, bool enable)
|
|
|
+{
|
|
|
+ if (enable) {
|
|
|
+ /* enable esc, enter, cursors */
|
|
|
+ steam_send_report_byte(steam, STEAM_CMD_DEFAULT_MAPPINGS);
|
|
|
+ /* enable mouse */
|
|
|
+ steam_send_report_byte(steam, STEAM_CMD_DEFAULT_MOUSE);
|
|
|
+ steam_write_registers(steam,
|
|
|
+ STEAM_REG_RPAD_MARGIN, 0x01, /* enable margin */
|
|
|
+ 0);
|
|
|
+ } 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);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_update_lizard_mode(struct steam_device *steam)
|
|
|
+{
|
|
|
+ mutex_lock(&steam->mutex);
|
|
|
+ if (!steam->client_opened) {
|
|
|
+ if (steam->input_opened)
|
|
|
+ steam_set_lizard_mode(steam, false);
|
|
|
+ else
|
|
|
+ steam_set_lizard_mode(steam, lizard_mode);
|
|
|
+ }
|
|
|
+ mutex_unlock(&steam->mutex);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_input_open(struct input_dev *dev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = input_get_drvdata(dev);
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = hid_hw_open(steam->hdev);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ mutex_lock(&steam->mutex);
|
|
|
+ steam->input_opened = true;
|
|
|
+ if (!steam->client_opened && lizard_mode)
|
|
|
+ steam_set_lizard_mode(steam, false);
|
|
|
+ mutex_unlock(&steam->mutex);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_input_close(struct input_dev *dev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = input_get_drvdata(dev);
|
|
|
+
|
|
|
+ mutex_lock(&steam->mutex);
|
|
|
+ steam->input_opened = false;
|
|
|
+ if (!steam->client_opened && lizard_mode)
|
|
|
+ steam_set_lizard_mode(steam, true);
|
|
|
+ mutex_unlock(&steam->mutex);
|
|
|
+
|
|
|
+ hid_hw_close(steam->hdev);
|
|
|
+}
|
|
|
+
|
|
|
+static enum power_supply_property steam_battery_props[] = {
|
|
|
+ POWER_SUPPLY_PROP_PRESENT,
|
|
|
+ POWER_SUPPLY_PROP_SCOPE,
|
|
|
+ POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
|
|
+ POWER_SUPPLY_PROP_CAPACITY,
|
|
|
+};
|
|
|
+
|
|
|
+static int steam_battery_get_property(struct power_supply *psy,
|
|
|
+ enum power_supply_property psp,
|
|
|
+ union power_supply_propval *val)
|
|
|
+{
|
|
|
+ struct steam_device *steam = power_supply_get_drvdata(psy);
|
|
|
+ unsigned long flags;
|
|
|
+ s16 volts;
|
|
|
+ u8 batt;
|
|
|
+ int ret = 0;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&steam->lock, flags);
|
|
|
+ volts = steam->voltage;
|
|
|
+ batt = steam->battery_charge;
|
|
|
+ spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
+
|
|
|
+ switch (psp) {
|
|
|
+ case POWER_SUPPLY_PROP_PRESENT:
|
|
|
+ val->intval = 1;
|
|
|
+ break;
|
|
|
+ case POWER_SUPPLY_PROP_SCOPE:
|
|
|
+ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
|
|
|
+ break;
|
|
|
+ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
|
|
+ val->intval = volts * 1000; /* mV -> uV */
|
|
|
+ break;
|
|
|
+ case POWER_SUPPLY_PROP_CAPACITY:
|
|
|
+ val->intval = batt;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ ret = -EINVAL;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_battery_register(struct steam_device *steam)
|
|
|
+{
|
|
|
+ struct power_supply *battery;
|
|
|
+ struct power_supply_config battery_cfg = { .drv_data = steam, };
|
|
|
+ unsigned long flags;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ steam->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
|
|
|
+ steam->battery_desc.properties = steam_battery_props;
|
|
|
+ steam->battery_desc.num_properties = ARRAY_SIZE(steam_battery_props);
|
|
|
+ steam->battery_desc.get_property = steam_battery_get_property;
|
|
|
+ steam->battery_desc.name = devm_kasprintf(&steam->hdev->dev,
|
|
|
+ GFP_KERNEL, "steam-controller-%s-battery",
|
|
|
+ steam->serial_no);
|
|
|
+ if (!steam->battery_desc.name)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ /* avoid the warning of 0% battery while waiting for the first info */
|
|
|
+ spin_lock_irqsave(&steam->lock, flags);
|
|
|
+ steam->voltage = 3000;
|
|
|
+ steam->battery_charge = 100;
|
|
|
+ spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
+
|
|
|
+ battery = power_supply_register(&steam->hdev->dev,
|
|
|
+ &steam->battery_desc, &battery_cfg);
|
|
|
+ if (IS_ERR(battery)) {
|
|
|
+ ret = PTR_ERR(battery);
|
|
|
+ hid_err(steam->hdev,
|
|
|
+ "%s:power_supply_register failed with error %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+ rcu_assign_pointer(steam->battery, battery);
|
|
|
+ power_supply_powers(battery, &steam->hdev->dev);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_register(struct steam_device *steam)
|
|
|
+{
|
|
|
+ struct hid_device *hdev = steam->hdev;
|
|
|
+ struct input_dev *input;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ rcu_read_lock();
|
|
|
+ input = rcu_dereference(steam->input);
|
|
|
+ rcu_read_unlock();
|
|
|
+ if (input) {
|
|
|
+ dbg_hid("%s: already connected\n", __func__);
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Unlikely, but getting the serial could fail, and it is not so
|
|
|
+ * important, so make up a serial number and go on.
|
|
|
+ */
|
|
|
+ if (steam_get_serial(steam) < 0)
|
|
|
+ strlcpy(steam->serial_no, "XXXXXXXXXX",
|
|
|
+ sizeof(steam->serial_no));
|
|
|
+
|
|
|
+ hid_info(hdev, "Steam Controller '%s' connected",
|
|
|
+ steam->serial_no);
|
|
|
+
|
|
|
+ input = input_allocate_device();
|
|
|
+ if (!input)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ input_set_drvdata(input, steam);
|
|
|
+ input->dev.parent = &hdev->dev;
|
|
|
+ input->open = steam_input_open;
|
|
|
+ input->close = steam_input_close;
|
|
|
+
|
|
|
+ input->name = (steam->quirks & STEAM_QUIRK_WIRELESS) ?
|
|
|
+ "Wireless Steam Controller" :
|
|
|
+ "Steam Controller";
|
|
|
+ input->phys = hdev->phys;
|
|
|
+ input->uniq = steam->serial_no;
|
|
|
+ input->id.bustype = hdev->bus;
|
|
|
+ input->id.vendor = hdev->vendor;
|
|
|
+ input->id.product = hdev->product;
|
|
|
+ input->id.version = hdev->version;
|
|
|
+
|
|
|
+ input_set_capability(input, EV_KEY, BTN_TR2);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_TL2);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_TR);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_TL);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_Y);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_B);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_X);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_A);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_DPAD_UP);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_DPAD_RIGHT);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_DPAD_LEFT);
|
|
|
+ input_set_capability(input, EV_KEY, BTN_DPAD_DOWN);
|
|
|
+ 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);
|
|
|
+
|
|
|
+ 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);
|
|
|
+ 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)
|
|
|
+ goto input_register_fail;
|
|
|
+
|
|
|
+ rcu_assign_pointer(steam->input, input);
|
|
|
+
|
|
|
+ /* ignore battery errors, we can live without it */
|
|
|
+ if (steam->quirks & STEAM_QUIRK_WIRELESS)
|
|
|
+ steam_battery_register(steam);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+input_register_fail:
|
|
|
+ input_free_device(input);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_unregister(struct steam_device *steam)
|
|
|
+{
|
|
|
+ struct input_dev *input;
|
|
|
+ struct power_supply *battery;
|
|
|
+
|
|
|
+ rcu_read_lock();
|
|
|
+ input = rcu_dereference(steam->input);
|
|
|
+ battery = rcu_dereference(steam->battery);
|
|
|
+ rcu_read_unlock();
|
|
|
+
|
|
|
+ if (battery) {
|
|
|
+ RCU_INIT_POINTER(steam->battery, NULL);
|
|
|
+ synchronize_rcu();
|
|
|
+ power_supply_unregister(battery);
|
|
|
+ }
|
|
|
+ if (input) {
|
|
|
+ RCU_INIT_POINTER(steam->input, NULL);
|
|
|
+ synchronize_rcu();
|
|
|
+ hid_info(steam->hdev, "Steam Controller '%s' disconnected",
|
|
|
+ steam->serial_no);
|
|
|
+ input_unregister_device(input);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_work_connect_cb(struct work_struct *work)
|
|
|
+{
|
|
|
+ struct steam_device *steam = container_of(work, struct steam_device,
|
|
|
+ work_connect);
|
|
|
+ unsigned long flags;
|
|
|
+ bool connected;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&steam->lock, flags);
|
|
|
+ connected = steam->connected;
|
|
|
+ spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
+
|
|
|
+ if (connected) {
|
|
|
+ ret = steam_register(steam);
|
|
|
+ if (ret) {
|
|
|
+ hid_err(steam->hdev,
|
|
|
+ "%s:steam_register failed with error %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ steam_unregister(steam);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+static bool steam_is_valve_interface(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct hid_report_enum *rep_enum;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * The wired device creates 3 interfaces:
|
|
|
+ * 0: emulated mouse.
|
|
|
+ * 1: emulated keyboard.
|
|
|
+ * 2: the real game pad.
|
|
|
+ * The wireless device creates 5 interfaces:
|
|
|
+ * 0: emulated keyboard.
|
|
|
+ * 1-4: slots where up to 4 real game pads will be connected to.
|
|
|
+ * We know which one is the real gamepad interface because they are the
|
|
|
+ * only ones with a feature report.
|
|
|
+ */
|
|
|
+ rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
|
|
|
+ return !list_empty(&rep_enum->report_list);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_client_ll_parse(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+
|
|
|
+ return hid_parse_report(hdev, steam->hdev->dev_rdesc,
|
|
|
+ steam->hdev->dev_rsize);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_client_ll_start(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_client_ll_stop(struct hid_device *hdev)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_client_ll_open(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = hid_hw_open(steam->hdev);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ mutex_lock(&steam->mutex);
|
|
|
+ steam->client_opened = true;
|
|
|
+ mutex_unlock(&steam->mutex);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_client_ll_close(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+
|
|
|
+ mutex_lock(&steam->mutex);
|
|
|
+ steam->client_opened = false;
|
|
|
+ if (steam->input_opened)
|
|
|
+ steam_set_lizard_mode(steam, false);
|
|
|
+ else
|
|
|
+ steam_set_lizard_mode(steam, lizard_mode);
|
|
|
+ mutex_unlock(&steam->mutex);
|
|
|
+
|
|
|
+ hid_hw_close(steam->hdev);
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_client_ll_raw_request(struct hid_device *hdev,
|
|
|
+ unsigned char reportnum, u8 *buf,
|
|
|
+ size_t count, unsigned char report_type,
|
|
|
+ int reqtype)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+
|
|
|
+ return hid_hw_raw_request(steam->hdev, reportnum, buf, count,
|
|
|
+ report_type, reqtype);
|
|
|
+}
|
|
|
+
|
|
|
+static struct hid_ll_driver steam_client_ll_driver = {
|
|
|
+ .parse = steam_client_ll_parse,
|
|
|
+ .start = steam_client_ll_start,
|
|
|
+ .stop = steam_client_ll_stop,
|
|
|
+ .open = steam_client_ll_open,
|
|
|
+ .close = steam_client_ll_close,
|
|
|
+ .raw_request = steam_client_ll_raw_request,
|
|
|
+};
|
|
|
+
|
|
|
+static struct hid_device *steam_create_client_hid(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct hid_device *client_hdev;
|
|
|
+
|
|
|
+ client_hdev = hid_allocate_device();
|
|
|
+ if (IS_ERR(client_hdev))
|
|
|
+ return client_hdev;
|
|
|
+
|
|
|
+ client_hdev->ll_driver = &steam_client_ll_driver;
|
|
|
+ client_hdev->dev.parent = hdev->dev.parent;
|
|
|
+ client_hdev->bus = hdev->bus;
|
|
|
+ client_hdev->vendor = hdev->vendor;
|
|
|
+ client_hdev->product = hdev->product;
|
|
|
+ client_hdev->version = hdev->version;
|
|
|
+ client_hdev->type = hdev->type;
|
|
|
+ client_hdev->country = hdev->country;
|
|
|
+ strlcpy(client_hdev->name, hdev->name,
|
|
|
+ sizeof(client_hdev->name));
|
|
|
+ strlcpy(client_hdev->phys, hdev->phys,
|
|
|
+ sizeof(client_hdev->phys));
|
|
|
+ /*
|
|
|
+ * Since we use the same device info than the real interface to
|
|
|
+ * trick userspace, we will be calling steam_probe recursively.
|
|
|
+ * We need to recognize the client interface somehow.
|
|
|
+ */
|
|
|
+ client_hdev->group = HID_GROUP_STEAM;
|
|
|
+ return client_hdev;
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_probe(struct hid_device *hdev,
|
|
|
+ const struct hid_device_id *id)
|
|
|
+{
|
|
|
+ struct steam_device *steam;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = hid_parse(hdev);
|
|
|
+ if (ret) {
|
|
|
+ hid_err(hdev,
|
|
|
+ "%s:parse of hid interface failed\n", __func__);
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * The virtual client_dev is only used for hidraw.
|
|
|
+ * Also avoid the recursive probe.
|
|
|
+ */
|
|
|
+ if (hdev->group == HID_GROUP_STEAM)
|
|
|
+ return hid_hw_start(hdev, HID_CONNECT_HIDRAW);
|
|
|
+ /*
|
|
|
+ * The non-valve interfaces (mouse and keyboard emulation) are
|
|
|
+ * connected without changes.
|
|
|
+ */
|
|
|
+ if (!steam_is_valve_interface(hdev))
|
|
|
+ return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
|
|
|
+
|
|
|
+ steam = devm_kzalloc(&hdev->dev, sizeof(*steam), GFP_KERNEL);
|
|
|
+ if (!steam) {
|
|
|
+ ret = -ENOMEM;
|
|
|
+ goto steam_alloc_fail;
|
|
|
+ }
|
|
|
+ steam->hdev = hdev;
|
|
|
+ hid_set_drvdata(hdev, steam);
|
|
|
+ spin_lock_init(&steam->lock);
|
|
|
+ mutex_init(&steam->mutex);
|
|
|
+ steam->quirks = id->driver_data;
|
|
|
+ INIT_WORK(&steam->work_connect, steam_work_connect_cb);
|
|
|
+
|
|
|
+ steam->client_hdev = steam_create_client_hid(hdev);
|
|
|
+ if (IS_ERR(steam->client_hdev)) {
|
|
|
+ ret = PTR_ERR(steam->client_hdev);
|
|
|
+ goto client_hdev_fail;
|
|
|
+ }
|
|
|
+ hid_set_drvdata(steam->client_hdev, steam);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * With the real steam controller interface, do not connect hidraw.
|
|
|
+ * Instead, create the client_hid and connect that.
|
|
|
+ */
|
|
|
+ ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_HIDRAW);
|
|
|
+ if (ret)
|
|
|
+ goto hid_hw_start_fail;
|
|
|
+
|
|
|
+ ret = hid_add_device(steam->client_hdev);
|
|
|
+ if (ret)
|
|
|
+ goto client_hdev_add_fail;
|
|
|
+
|
|
|
+ if (steam->quirks & STEAM_QUIRK_WIRELESS) {
|
|
|
+ ret = hid_hw_open(hdev);
|
|
|
+ if (ret) {
|
|
|
+ hid_err(hdev,
|
|
|
+ "%s:hid_hw_open for wireless\n",
|
|
|
+ __func__);
|
|
|
+ goto hid_hw_open_fail;
|
|
|
+ }
|
|
|
+ hid_info(hdev, "Steam wireless receiver connected");
|
|
|
+ steam_request_conn_status(steam);
|
|
|
+ } else {
|
|
|
+ ret = steam_register(steam);
|
|
|
+ if (ret) {
|
|
|
+ hid_err(hdev,
|
|
|
+ "%s:steam_register failed with error %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ goto input_register_fail;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ mutex_lock(&steam_devices_lock);
|
|
|
+ steam_update_lizard_mode(steam);
|
|
|
+ list_add(&steam->list, &steam_devices);
|
|
|
+ mutex_unlock(&steam_devices_lock);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+
|
|
|
+hid_hw_open_fail:
|
|
|
+input_register_fail:
|
|
|
+client_hdev_add_fail:
|
|
|
+ hid_hw_stop(hdev);
|
|
|
+hid_hw_start_fail:
|
|
|
+ hid_destroy_device(steam->client_hdev);
|
|
|
+client_hdev_fail:
|
|
|
+ cancel_work_sync(&steam->work_connect);
|
|
|
+steam_alloc_fail:
|
|
|
+ hid_err(hdev, "%s: failed with error %d\n",
|
|
|
+ __func__, ret);
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_remove(struct hid_device *hdev)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+
|
|
|
+ if (!steam || hdev->group == HID_GROUP_STEAM) {
|
|
|
+ hid_hw_stop(hdev);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ mutex_lock(&steam_devices_lock);
|
|
|
+ list_del(&steam->list);
|
|
|
+ mutex_unlock(&steam_devices_lock);
|
|
|
+
|
|
|
+ hid_destroy_device(steam->client_hdev);
|
|
|
+ steam->client_opened = false;
|
|
|
+ cancel_work_sync(&steam->work_connect);
|
|
|
+ if (steam->quirks & STEAM_QUIRK_WIRELESS) {
|
|
|
+ hid_info(hdev, "Steam wireless receiver disconnected");
|
|
|
+ hid_hw_close(hdev);
|
|
|
+ }
|
|
|
+ hid_hw_stop(hdev);
|
|
|
+ steam_unregister(steam);
|
|
|
+}
|
|
|
+
|
|
|
+static void steam_do_connect_event(struct steam_device *steam, bool connected)
|
|
|
+{
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ spin_lock_irqsave(&steam->lock, flags);
|
|
|
+ steam->connected = connected;
|
|
|
+ spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
+
|
|
|
+ if (schedule_work(&steam->work_connect) == 0)
|
|
|
+ dbg_hid("%s: connected=%d event already queued\n",
|
|
|
+ __func__, connected);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Some input data in the protocol has the opposite sign.
|
|
|
+ * Clamp the values to 32767..-32767 so that the range is
|
|
|
+ * symmetrical and can be negated safely.
|
|
|
+ */
|
|
|
+static inline s16 steam_le16(u8 *data)
|
|
|
+{
|
|
|
+ s16 x = (s16) le16_to_cpup((__le16 *)data);
|
|
|
+
|
|
|
+ return x == -32768 ? -32767 : x;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * The size for this message payload is 60.
|
|
|
+ * The known values are:
|
|
|
+ * (* values are not sent through wireless)
|
|
|
+ * (* accelerator/gyro is disabled by default)
|
|
|
+ * Offset| Type | Mapped to |Meaning
|
|
|
+ * -------+-------+-----------+--------------------------
|
|
|
+ * 4-7 | u32 | -- | sequence number
|
|
|
+ * 8-10 | 24bit | see below | buttons
|
|
|
+ * 11 | u8 | ABS_HAT2Y | left trigger
|
|
|
+ * 12 | u8 | ABS_HAT2X | right trigger
|
|
|
+ * 13-15 | -- | -- | always 0
|
|
|
+ * 16-17 | s16 | ABS_X/ABS_HAT0X | X value
|
|
|
+ * 18-19 | s16 | ABS_Y/ABS_HAT0Y | Y value
|
|
|
+ * 20-21 | s16 | ABS_RX | right-pad X value
|
|
|
+ * 22-23 | s16 | ABS_RY | right-pad Y value
|
|
|
+ * 24-25 | s16 | -- | * left trigger
|
|
|
+ * 26-27 | s16 | -- | * right trigger
|
|
|
+ * 28-29 | s16 | -- | * accelerometer X value
|
|
|
+ * 30-31 | s16 | -- | * accelerometer Y value
|
|
|
+ * 32-33 | s16 | -- | * accelerometer Z value
|
|
|
+ * 34-35 | s16 | -- | gyro X value
|
|
|
+ * 36-36 | s16 | -- | gyro Y value
|
|
|
+ * 38-39 | s16 | -- | gyro Z value
|
|
|
+ * 40-41 | s16 | -- | quaternion W value
|
|
|
+ * 42-43 | s16 | -- | quaternion X value
|
|
|
+ * 44-45 | s16 | -- | quaternion Y value
|
|
|
+ * 46-47 | s16 | -- | quaternion Z value
|
|
|
+ * 48-49 | -- | -- | always 0
|
|
|
+ * 50-51 | s16 | -- | * left trigger (uncalibrated)
|
|
|
+ * 52-53 | s16 | -- | * right trigger (uncalibrated)
|
|
|
+ * 54-55 | s16 | -- | * joystick X value (uncalibrated)
|
|
|
+ * 56-57 | s16 | -- | * joystick Y value (uncalibrated)
|
|
|
+ * 58-59 | s16 | -- | * left-pad X value
|
|
|
+ * 60-61 | s16 | -- | * left-pad Y value
|
|
|
+ * 62-63 | u16 | -- | * battery voltage
|
|
|
+ *
|
|
|
+ * 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 | 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
|
|
|
+ * 9.4 | BTN_SELECT | menu left
|
|
|
+ * 9.5 | BTN_MODE | steam logo
|
|
|
+ * 9.6 | BTN_START | menu right
|
|
|
+ * 9.7 | BTN_GEAR_DOWN | left back lever
|
|
|
+ * 10.0 | BTN_GEAR_UP | right back lever
|
|
|
+ * 10.1 | -- | left-pad clicked
|
|
|
+ * 10.2 | BTN_THUMBR | right-pad clicked
|
|
|
+ * 10.3 | BTN_THUMB | left-pad touched (but see explanation below)
|
|
|
+ * 10.4 | BTN_THUMB2 | right-pad touched
|
|
|
+ * 10.5 | -- | unknown
|
|
|
+ * 10.6 | BTN_THUMBL | joystick clicked
|
|
|
+ * 10.7 | -- | lpad_and_joy
|
|
|
+ */
|
|
|
+
|
|
|
+static void steam_do_input_event(struct steam_device *steam,
|
|
|
+ struct input_dev *input, u8 *data)
|
|
|
+{
|
|
|
+ /* 24 bits of buttons */
|
|
|
+ u8 b8, b9, b10;
|
|
|
+ s16 x, y;
|
|
|
+ bool lpad_touched, lpad_and_joy;
|
|
|
+
|
|
|
+ b8 = data[8];
|
|
|
+ b9 = data[9];
|
|
|
+ b10 = data[10];
|
|
|
+
|
|
|
+ input_report_abs(input, ABS_HAT2Y, data[11]);
|
|
|
+ input_report_abs(input, ABS_HAT2X, data[12]);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * These two bits tells how to interpret the values X and Y.
|
|
|
+ * lpad_and_joy tells that the joystick and the lpad are used at the
|
|
|
+ * same time.
|
|
|
+ * lpad_touched tells whether X/Y are to be read as lpad coord or
|
|
|
+ * joystick values.
|
|
|
+ * (lpad_touched || lpad_and_joy) tells if the lpad is really touched.
|
|
|
+ */
|
|
|
+ lpad_touched = b10 & BIT(3);
|
|
|
+ lpad_and_joy = b10 & BIT(7);
|
|
|
+ x = steam_le16(data + 16);
|
|
|
+ y = -steam_le16(data + 18);
|
|
|
+
|
|
|
+ input_report_abs(input, lpad_touched ? ABS_HAT0X : ABS_X, x);
|
|
|
+ input_report_abs(input, lpad_touched ? ABS_HAT0Y : ABS_Y, y);
|
|
|
+ /* Check if joystick is centered */
|
|
|
+ if (lpad_touched && !lpad_and_joy) {
|
|
|
+ input_report_abs(input, ABS_X, 0);
|
|
|
+ input_report_abs(input, ABS_Y, 0);
|
|
|
+ }
|
|
|
+ /* Check if lpad is untouched */
|
|
|
+ if (!(lpad_touched || lpad_and_joy)) {
|
|
|
+ input_report_abs(input, ABS_HAT0X, 0);
|
|
|
+ input_report_abs(input, ABS_HAT0Y, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+ input_report_abs(input, ABS_RX, steam_le16(data + 20));
|
|
|
+ input_report_abs(input, ABS_RY, -steam_le16(data + 22));
|
|
|
+
|
|
|
+ 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_GEAR_DOWN, !!(b9 & BIT(7)));
|
|
|
+ input_event(input, EV_KEY, BTN_GEAR_UP, !!(b10 & BIT(0)));
|
|
|
+ input_event(input, EV_KEY, BTN_THUMBR, !!(b10 & BIT(2)));
|
|
|
+ input_event(input, EV_KEY, BTN_THUMBL, !!(b10 & BIT(6)));
|
|
|
+ input_event(input, EV_KEY, BTN_THUMB, lpad_touched || lpad_and_joy);
|
|
|
+ input_event(input, EV_KEY, BTN_THUMB2, !!(b10 & BIT(4)));
|
|
|
+ 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_sync(input);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * The size for this message payload is 11.
|
|
|
+ * The known values are:
|
|
|
+ * Offset| Type | Meaning
|
|
|
+ * -------+-------+---------------------------
|
|
|
+ * 4-7 | u32 | sequence number
|
|
|
+ * 8-11 | -- | always 0
|
|
|
+ * 12-13 | u16 | voltage (mV)
|
|
|
+ * 14 | u8 | battery percent
|
|
|
+ */
|
|
|
+static void steam_do_battery_event(struct steam_device *steam,
|
|
|
+ struct power_supply *battery, u8 *data)
|
|
|
+{
|
|
|
+ unsigned long flags;
|
|
|
+
|
|
|
+ s16 volts = steam_le16(data + 12);
|
|
|
+ u8 batt = data[14];
|
|
|
+
|
|
|
+ /* Creating the battery may have failed */
|
|
|
+ rcu_read_lock();
|
|
|
+ battery = rcu_dereference(steam->battery);
|
|
|
+ if (likely(battery)) {
|
|
|
+ spin_lock_irqsave(&steam->lock, flags);
|
|
|
+ steam->voltage = volts;
|
|
|
+ steam->battery_charge = batt;
|
|
|
+ spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
+ power_supply_changed(battery);
|
|
|
+ }
|
|
|
+ rcu_read_unlock();
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_raw_event(struct hid_device *hdev,
|
|
|
+ struct hid_report *report, u8 *data,
|
|
|
+ int size)
|
|
|
+{
|
|
|
+ struct steam_device *steam = hid_get_drvdata(hdev);
|
|
|
+ struct input_dev *input;
|
|
|
+ struct power_supply *battery;
|
|
|
+
|
|
|
+ if (!steam)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ if (steam->client_opened)
|
|
|
+ hid_input_report(steam->client_hdev, HID_FEATURE_REPORT,
|
|
|
+ data, size, 0);
|
|
|
+ /*
|
|
|
+ * All messages are size=64, all values little-endian.
|
|
|
+ * The format is:
|
|
|
+ * Offset| Meaning
|
|
|
+ * -------+--------------------------------------------
|
|
|
+ * 0-1 | always 0x01, 0x00, maybe protocol version?
|
|
|
+ * 2 | type of message
|
|
|
+ * 3 | length of the real payload (not checked)
|
|
|
+ * 4-n | payload data, depends on the type
|
|
|
+ *
|
|
|
+ * There are these known types of message:
|
|
|
+ * 0x01: input data (60 bytes)
|
|
|
+ * 0x03: wireless connect/disconnect (1 byte)
|
|
|
+ * 0x04: battery status (11 bytes)
|
|
|
+ */
|
|
|
+
|
|
|
+ if (size != 64 || data[0] != 1 || data[1] != 0)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ switch (data[2]) {
|
|
|
+ case STEAM_EV_INPUT_DATA:
|
|
|
+ if (steam->client_opened)
|
|
|
+ return 0;
|
|
|
+ rcu_read_lock();
|
|
|
+ input = rcu_dereference(steam->input);
|
|
|
+ if (likely(input)) {
|
|
|
+ steam_do_input_event(steam, input, data);
|
|
|
+ } else {
|
|
|
+ dbg_hid("%s: input data without connect event\n",
|
|
|
+ __func__);
|
|
|
+ steam_do_connect_event(steam, true);
|
|
|
+ }
|
|
|
+ rcu_read_unlock();
|
|
|
+ break;
|
|
|
+ case STEAM_EV_CONNECT:
|
|
|
+ /*
|
|
|
+ * The payload of this event is a single byte:
|
|
|
+ * 0x01: disconnected.
|
|
|
+ * 0x02: connected.
|
|
|
+ */
|
|
|
+ switch (data[4]) {
|
|
|
+ case 0x01:
|
|
|
+ steam_do_connect_event(steam, false);
|
|
|
+ break;
|
|
|
+ case 0x02:
|
|
|
+ steam_do_connect_event(steam, true);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case STEAM_EV_BATTERY:
|
|
|
+ if (steam->quirks & STEAM_QUIRK_WIRELESS) {
|
|
|
+ rcu_read_lock();
|
|
|
+ battery = rcu_dereference(steam->battery);
|
|
|
+ if (likely(battery)) {
|
|
|
+ steam_do_battery_event(steam, battery, data);
|
|
|
+ } else {
|
|
|
+ dbg_hid(
|
|
|
+ "%s: battery data without connect event\n",
|
|
|
+ __func__);
|
|
|
+ steam_do_connect_event(steam, true);
|
|
|
+ }
|
|
|
+ rcu_read_unlock();
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int steam_param_set_lizard_mode(const char *val,
|
|
|
+ const struct kernel_param *kp)
|
|
|
+{
|
|
|
+ struct steam_device *steam;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = param_set_bool(val, kp);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ mutex_lock(&steam_devices_lock);
|
|
|
+ list_for_each_entry(steam, &steam_devices, list) {
|
|
|
+ steam_update_lizard_mode(steam);
|
|
|
+ }
|
|
|
+ mutex_unlock(&steam_devices_lock);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static const struct kernel_param_ops steam_lizard_mode_ops = {
|
|
|
+ .set = steam_param_set_lizard_mode,
|
|
|
+ .get = param_get_bool,
|
|
|
+};
|
|
|
+
|
|
|
+module_param_cb(lizard_mode, &steam_lizard_mode_ops, &lizard_mode, 0644);
|
|
|
+MODULE_PARM_DESC(lizard_mode,
|
|
|
+ "Enable mouse and keyboard emulation (lizard mode) when the gamepad is not in use");
|
|
|
+
|
|
|
+static const struct hid_device_id steam_controllers[] = {
|
|
|
+ { /* Wired Steam Controller */
|
|
|
+ HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
|
|
|
+ USB_DEVICE_ID_STEAM_CONTROLLER)
|
|
|
+ },
|
|
|
+ { /* Wireless Steam Controller */
|
|
|
+ HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
|
|
|
+ USB_DEVICE_ID_STEAM_CONTROLLER_WIRELESS),
|
|
|
+ .driver_data = STEAM_QUIRK_WIRELESS
|
|
|
+ },
|
|
|
+ {}
|
|
|
+};
|
|
|
+
|
|
|
+MODULE_DEVICE_TABLE(hid, steam_controllers);
|
|
|
+
|
|
|
+static struct hid_driver steam_controller_driver = {
|
|
|
+ .name = "hid-steam",
|
|
|
+ .id_table = steam_controllers,
|
|
|
+ .probe = steam_probe,
|
|
|
+ .remove = steam_remove,
|
|
|
+ .raw_event = steam_raw_event,
|
|
|
+};
|
|
|
+
|
|
|
+module_hid_driver(steam_controller_driver);
|
Linus Torvalds