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1488 lines
44 KiB
C
1488 lines
44 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* HID driver for Valve Steam Controller
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*
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* Copyright (c) 2018 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
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* Copyright (c) 2022 Valve Software
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*
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* Supports both the wired and wireless interfaces.
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*
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* This controller has a builtin emulation of mouse and keyboard: the right pad
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* can be used as a mouse, the shoulder buttons are mouse buttons, A and B
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* buttons are ENTER and ESCAPE, and so on. This is implemented as additional
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* HID interfaces.
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*
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* This is known as the "lizard mode", because apparently lizards like to use
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* the computer from the coach, without a proper mouse and keyboard.
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*
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* This driver will disable the lizard mode when the input device is opened
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* and re-enable it when the input device is closed, so as not to break user
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* mode behaviour. The lizard_mode parameter can be used to change that.
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*
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* There are a few user space applications (notably Steam Client) that use
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* the hidraw interface directly to create input devices (XTest, uinput...).
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* In order to avoid breaking them this driver creates a layered hidraw device,
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* so it can detect when the client is running and then:
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* - it will not send any command to the controller.
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* - this input device will be removed, to avoid double input of the same
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* user action.
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* When the client is closed, this input device will be created again.
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*
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* For additional functions, such as changing the right-pad margin or switching
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* the led, you can use the user-space tool at:
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*
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* https://github.com/rodrigorc/steamctrl
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*/
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#include <linux/device.h>
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#include <linux/input.h>
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#include <linux/hid.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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#include <linux/mutex.h>
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#include <linux/rcupdate.h>
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#include <linux/delay.h>
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#include <linux/power_supply.h>
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#include "hid-ids.h"
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>");
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static bool lizard_mode = true;
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static DEFINE_MUTEX(steam_devices_lock);
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static LIST_HEAD(steam_devices);
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#define STEAM_QUIRK_WIRELESS BIT(0)
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#define STEAM_QUIRK_DECK BIT(1)
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/* Touch pads are 40 mm in diameter and 65535 units */
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#define STEAM_PAD_RESOLUTION 1638
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/* Trigger runs are about 5 mm and 256 units */
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#define STEAM_TRIGGER_RESOLUTION 51
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/* Joystick runs are about 5 mm and 256 units */
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#define STEAM_JOYSTICK_RESOLUTION 51
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/* Trigger runs are about 6 mm and 32768 units */
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#define STEAM_DECK_TRIGGER_RESOLUTION 5461
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/* Joystick runs are about 5 mm and 32768 units */
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#define STEAM_DECK_JOYSTICK_RESOLUTION 6553
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#define STEAM_PAD_FUZZ 256
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/*
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* Commands that can be sent in a feature report.
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* Thanks to Valve for some valuable hints.
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*/
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#define STEAM_CMD_SET_MAPPINGS 0x80
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#define STEAM_CMD_CLEAR_MAPPINGS 0x81
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#define STEAM_CMD_GET_MAPPINGS 0x82
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#define STEAM_CMD_GET_ATTRIB 0x83
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#define STEAM_CMD_GET_ATTRIB_LABEL 0x84
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#define STEAM_CMD_DEFAULT_MAPPINGS 0x85
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#define STEAM_CMD_FACTORY_RESET 0x86
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#define STEAM_CMD_WRITE_REGISTER 0x87
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#define STEAM_CMD_CLEAR_REGISTER 0x88
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#define STEAM_CMD_READ_REGISTER 0x89
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#define STEAM_CMD_GET_REGISTER_LABEL 0x8a
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#define STEAM_CMD_GET_REGISTER_MAX 0x8b
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#define STEAM_CMD_GET_REGISTER_DEFAULT 0x8c
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#define STEAM_CMD_SET_MODE 0x8d
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#define STEAM_CMD_DEFAULT_MOUSE 0x8e
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#define STEAM_CMD_FORCEFEEDBAK 0x8f
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#define STEAM_CMD_REQUEST_COMM_STATUS 0xb4
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#define STEAM_CMD_GET_SERIAL 0xae
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#define STEAM_CMD_HAPTIC_RUMBLE 0xeb
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/* Some useful register ids */
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#define STEAM_REG_LPAD_MODE 0x07
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#define STEAM_REG_RPAD_MODE 0x08
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#define STEAM_REG_RPAD_MARGIN 0x18
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#define STEAM_REG_LED 0x2d
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#define STEAM_REG_GYRO_MODE 0x30
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#define STEAM_REG_LPAD_CLICK_PRESSURE 0x34
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#define STEAM_REG_RPAD_CLICK_PRESSURE 0x35
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/* Raw event identifiers */
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#define STEAM_EV_INPUT_DATA 0x01
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#define STEAM_EV_CONNECT 0x03
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#define STEAM_EV_BATTERY 0x04
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#define STEAM_EV_DECK_INPUT_DATA 0x09
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/* Values for GYRO_MODE (bitmask) */
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#define STEAM_GYRO_MODE_OFF 0x0000
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#define STEAM_GYRO_MODE_STEERING 0x0001
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#define STEAM_GYRO_MODE_TILT 0x0002
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#define STEAM_GYRO_MODE_SEND_ORIENTATION 0x0004
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#define STEAM_GYRO_MODE_SEND_RAW_ACCEL 0x0008
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#define STEAM_GYRO_MODE_SEND_RAW_GYRO 0x0010
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/* Other random constants */
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#define STEAM_SERIAL_LEN 10
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struct steam_device {
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struct list_head list;
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spinlock_t lock;
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struct hid_device *hdev, *client_hdev;
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struct mutex mutex;
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bool client_opened;
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struct input_dev __rcu *input;
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unsigned long quirks;
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struct work_struct work_connect;
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bool connected;
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char serial_no[STEAM_SERIAL_LEN + 1];
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struct power_supply_desc battery_desc;
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struct power_supply __rcu *battery;
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u8 battery_charge;
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u16 voltage;
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struct delayed_work heartbeat;
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struct work_struct rumble_work;
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u16 rumble_left;
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u16 rumble_right;
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};
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static int steam_recv_report(struct steam_device *steam,
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u8 *data, int size)
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{
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struct hid_report *r;
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u8 *buf;
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int ret;
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r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0];
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if (!r) {
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hid_err(steam->hdev, "No HID_FEATURE_REPORT submitted - nothing to read\n");
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return -EINVAL;
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}
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if (hid_report_len(r) < 64)
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return -EINVAL;
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buf = hid_alloc_report_buf(r, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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/*
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* The report ID is always 0, so strip the first byte from the output.
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* hid_report_len() is not counting the report ID, so +1 to the length
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* or else we get a EOVERFLOW. We are safe from a buffer overflow
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* because hid_alloc_report_buf() allocates +7 bytes.
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*/
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ret = hid_hw_raw_request(steam->hdev, 0x00,
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buf, hid_report_len(r) + 1,
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HID_FEATURE_REPORT, HID_REQ_GET_REPORT);
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if (ret > 0)
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memcpy(data, buf + 1, min(size, ret - 1));
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kfree(buf);
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return ret;
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}
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static int steam_send_report(struct steam_device *steam,
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u8 *cmd, int size)
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{
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struct hid_report *r;
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u8 *buf;
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unsigned int retries = 50;
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int ret;
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r = steam->hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0];
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if (!r) {
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hid_err(steam->hdev, "No HID_FEATURE_REPORT submitted - nothing to read\n");
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return -EINVAL;
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}
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if (hid_report_len(r) < 64)
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return -EINVAL;
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buf = hid_alloc_report_buf(r, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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/* The report ID is always 0 */
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memcpy(buf + 1, cmd, size);
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/*
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* Sometimes the wireless controller fails with EPIPE
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* when sending a feature report.
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* Doing a HID_REQ_GET_REPORT and waiting for a while
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* seems to fix that.
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*/
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do {
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ret = hid_hw_raw_request(steam->hdev, 0,
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buf, max(size, 64) + 1,
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HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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if (ret != -EPIPE)
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break;
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msleep(20);
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} while (--retries);
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kfree(buf);
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if (ret < 0)
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hid_err(steam->hdev, "%s: error %d (%*ph)\n", __func__,
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ret, size, cmd);
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return ret;
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}
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static inline int steam_send_report_byte(struct steam_device *steam, u8 cmd)
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{
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return steam_send_report(steam, &cmd, 1);
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}
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static int steam_write_registers(struct steam_device *steam,
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/* u8 reg, u16 val */...)
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{
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/* Send: 0x87 len (reg valLo valHi)* */
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u8 reg;
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u16 val;
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u8 cmd[64] = {STEAM_CMD_WRITE_REGISTER, 0x00};
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int ret;
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va_list args;
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va_start(args, steam);
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for (;;) {
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reg = va_arg(args, int);
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if (reg == 0)
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break;
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val = va_arg(args, int);
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cmd[cmd[1] + 2] = reg;
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cmd[cmd[1] + 3] = val & 0xff;
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cmd[cmd[1] + 4] = val >> 8;
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cmd[1] += 3;
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}
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va_end(args);
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ret = steam_send_report(steam, cmd, 2 + cmd[1]);
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if (ret < 0)
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return ret;
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/*
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* Sometimes a lingering report for this command can
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* get read back instead of the last set report if
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* this isn't explicitly queried
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*/
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return steam_recv_report(steam, cmd, 2 + cmd[1]);
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}
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static int steam_get_serial(struct steam_device *steam)
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{
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/*
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* Send: 0xae 0x15 0x01
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* Recv: 0xae 0x15 0x01 serialnumber (10 chars)
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*/
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int ret;
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u8 cmd[] = {STEAM_CMD_GET_SERIAL, 0x15, 0x01};
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u8 reply[3 + STEAM_SERIAL_LEN + 1];
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ret = steam_send_report(steam, cmd, sizeof(cmd));
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if (ret < 0)
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return ret;
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ret = steam_recv_report(steam, reply, sizeof(reply));
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if (ret < 0)
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return ret;
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if (reply[0] != 0xae || reply[1] != 0x15 || reply[2] != 0x01)
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return -EIO;
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reply[3 + STEAM_SERIAL_LEN] = 0;
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strscpy(steam->serial_no, reply + 3, sizeof(steam->serial_no));
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return 0;
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}
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/*
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* This command requests the wireless adaptor to post an event
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* with the connection status. Useful if this driver is loaded when
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* the controller is already connected.
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*/
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static inline int steam_request_conn_status(struct steam_device *steam)
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{
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return steam_send_report_byte(steam, STEAM_CMD_REQUEST_COMM_STATUS);
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}
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static inline int steam_haptic_rumble(struct steam_device *steam,
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u16 intensity, u16 left_speed, u16 right_speed,
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u8 left_gain, u8 right_gain)
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{
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u8 report[11] = {STEAM_CMD_HAPTIC_RUMBLE, 9};
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report[3] = intensity & 0xFF;
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report[4] = intensity >> 8;
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report[5] = left_speed & 0xFF;
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report[6] = left_speed >> 8;
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report[7] = right_speed & 0xFF;
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report[8] = right_speed >> 8;
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report[9] = left_gain;
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report[10] = right_gain;
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return steam_send_report(steam, report, sizeof(report));
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}
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static void steam_haptic_rumble_cb(struct work_struct *work)
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{
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struct steam_device *steam = container_of(work, struct steam_device,
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rumble_work);
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steam_haptic_rumble(steam, 0, steam->rumble_left,
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steam->rumble_right, 2, 0);
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}
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#ifdef CONFIG_STEAM_FF
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static int steam_play_effect(struct input_dev *dev, void *data,
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struct ff_effect *effect)
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{
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struct steam_device *steam = input_get_drvdata(dev);
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steam->rumble_left = effect->u.rumble.strong_magnitude;
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steam->rumble_right = effect->u.rumble.weak_magnitude;
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return schedule_work(&steam->rumble_work);
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}
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#endif
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static void steam_set_lizard_mode(struct steam_device *steam, bool enable)
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{
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if (enable) {
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/* enable esc, enter, cursors */
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steam_send_report_byte(steam, STEAM_CMD_DEFAULT_MAPPINGS);
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/* enable mouse */
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steam_send_report_byte(steam, STEAM_CMD_DEFAULT_MOUSE);
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steam_write_registers(steam,
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STEAM_REG_RPAD_MARGIN, 0x01, /* enable margin */
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0);
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cancel_delayed_work_sync(&steam->heartbeat);
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} else {
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/* disable esc, enter, cursor */
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steam_send_report_byte(steam, STEAM_CMD_CLEAR_MAPPINGS);
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if (steam->quirks & STEAM_QUIRK_DECK) {
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steam_write_registers(steam,
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STEAM_REG_RPAD_MARGIN, 0x00, /* disable margin */
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STEAM_REG_LPAD_MODE, 0x07, /* disable mouse */
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STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
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STEAM_REG_LPAD_CLICK_PRESSURE, 0xFFFF, /* disable clicky pad */
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STEAM_REG_RPAD_CLICK_PRESSURE, 0xFFFF, /* disable clicky pad */
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0);
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/*
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* The Steam Deck has a watchdog that automatically enables
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* lizard mode if it doesn't see any traffic for too long
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*/
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if (!work_busy(&steam->heartbeat.work))
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schedule_delayed_work(&steam->heartbeat, 5 * HZ);
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} else {
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steam_write_registers(steam,
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STEAM_REG_RPAD_MARGIN, 0x00, /* disable margin */
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STEAM_REG_LPAD_MODE, 0x07, /* disable mouse */
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STEAM_REG_RPAD_MODE, 0x07, /* disable mouse */
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0);
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}
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}
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}
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static int steam_input_open(struct input_dev *dev)
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{
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struct steam_device *steam = input_get_drvdata(dev);
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mutex_lock(&steam->mutex);
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if (!steam->client_opened && lizard_mode)
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steam_set_lizard_mode(steam, false);
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mutex_unlock(&steam->mutex);
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return 0;
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}
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static void steam_input_close(struct input_dev *dev)
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{
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struct steam_device *steam = input_get_drvdata(dev);
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mutex_lock(&steam->mutex);
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if (!steam->client_opened && lizard_mode)
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steam_set_lizard_mode(steam, true);
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mutex_unlock(&steam->mutex);
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}
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static enum power_supply_property steam_battery_props[] = {
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_SCOPE,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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};
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static int steam_battery_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct steam_device *steam = power_supply_get_drvdata(psy);
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unsigned long flags;
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s16 volts;
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u8 batt;
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int ret = 0;
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spin_lock_irqsave(&steam->lock, flags);
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volts = steam->voltage;
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batt = steam->battery_charge;
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spin_unlock_irqrestore(&steam->lock, flags);
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switch (psp) {
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case POWER_SUPPLY_PROP_PRESENT:
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val->intval = 1;
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break;
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case POWER_SUPPLY_PROP_SCOPE:
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val->intval = POWER_SUPPLY_SCOPE_DEVICE;
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_NOW:
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val->intval = volts * 1000; /* mV -> uV */
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break;
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case POWER_SUPPLY_PROP_CAPACITY:
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val->intval = batt;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int steam_battery_register(struct steam_device *steam)
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{
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struct power_supply *battery;
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struct power_supply_config battery_cfg = { .drv_data = steam, };
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unsigned long flags;
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int ret;
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steam->battery_desc.type = POWER_SUPPLY_TYPE_BATTERY;
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steam->battery_desc.properties = steam_battery_props;
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steam->battery_desc.num_properties = ARRAY_SIZE(steam_battery_props);
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steam->battery_desc.get_property = steam_battery_get_property;
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steam->battery_desc.name = devm_kasprintf(&steam->hdev->dev,
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GFP_KERNEL, "steam-controller-%s-battery",
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steam->serial_no);
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if (!steam->battery_desc.name)
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return -ENOMEM;
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/* avoid the warning of 0% battery while waiting for the first info */
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spin_lock_irqsave(&steam->lock, flags);
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steam->voltage = 3000;
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steam->battery_charge = 100;
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spin_unlock_irqrestore(&steam->lock, flags);
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battery = power_supply_register(&steam->hdev->dev,
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&steam->battery_desc, &battery_cfg);
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if (IS_ERR(battery)) {
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ret = PTR_ERR(battery);
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hid_err(steam->hdev,
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"%s:power_supply_register failed with error %d\n",
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__func__, ret);
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return ret;
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}
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rcu_assign_pointer(steam->battery, battery);
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power_supply_powers(battery, &steam->hdev->dev);
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return 0;
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}
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|
|
static int steam_input_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;
|
|
}
|
|
|
|
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->quirks & STEAM_QUIRK_DECK) ? "Steam Deck" :
|
|
"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_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_X, -32767, 32767, 0, 0);
|
|
input_set_abs_params(input, ABS_Y, -32767, 32767, 0, 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);
|
|
|
|
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);
|
|
|
|
#ifdef CONFIG_STEAM_FF
|
|
if (steam->quirks & STEAM_QUIRK_DECK) {
|
|
input_set_capability(input, EV_FF, FF_RUMBLE);
|
|
ret = input_ff_create_memless(input, NULL, steam_play_effect);
|
|
if (ret)
|
|
goto input_register_fail;
|
|
}
|
|
#endif
|
|
|
|
ret = input_register_device(input);
|
|
if (ret)
|
|
goto input_register_fail;
|
|
|
|
rcu_assign_pointer(steam->input, input);
|
|
return 0;
|
|
|
|
input_register_fail:
|
|
input_free_device(input);
|
|
return ret;
|
|
}
|
|
|
|
static void steam_input_unregister(struct steam_device *steam)
|
|
{
|
|
struct input_dev *input;
|
|
rcu_read_lock();
|
|
input = rcu_dereference(steam->input);
|
|
rcu_read_unlock();
|
|
if (!input)
|
|
return;
|
|
RCU_INIT_POINTER(steam->input, NULL);
|
|
synchronize_rcu();
|
|
input_unregister_device(input);
|
|
}
|
|
|
|
static void steam_battery_unregister(struct steam_device *steam)
|
|
{
|
|
struct power_supply *battery;
|
|
|
|
rcu_read_lock();
|
|
battery = rcu_dereference(steam->battery);
|
|
rcu_read_unlock();
|
|
|
|
if (!battery)
|
|
return;
|
|
RCU_INIT_POINTER(steam->battery, NULL);
|
|
synchronize_rcu();
|
|
power_supply_unregister(battery);
|
|
}
|
|
|
|
static int steam_register(struct steam_device *steam)
|
|
{
|
|
int ret;
|
|
bool client_opened;
|
|
|
|
/*
|
|
* This function can be called several times in a row with the
|
|
* wireless adaptor, without steam_unregister() between them, because
|
|
* another client send a get_connection_status command, for example.
|
|
* The battery and serial number are set just once per device.
|
|
*/
|
|
if (!steam->serial_no[0]) {
|
|
/*
|
|
* Unlikely, but getting the serial could fail, and it is not so
|
|
* important, so make up a serial number and go on.
|
|
*/
|
|
mutex_lock(&steam->mutex);
|
|
if (steam_get_serial(steam) < 0)
|
|
strscpy(steam->serial_no, "XXXXXXXXXX",
|
|
sizeof(steam->serial_no));
|
|
mutex_unlock(&steam->mutex);
|
|
|
|
hid_info(steam->hdev, "Steam Controller '%s' connected",
|
|
steam->serial_no);
|
|
|
|
/* ignore battery errors, we can live without it */
|
|
if (steam->quirks & STEAM_QUIRK_WIRELESS)
|
|
steam_battery_register(steam);
|
|
|
|
mutex_lock(&steam_devices_lock);
|
|
if (list_empty(&steam->list))
|
|
list_add(&steam->list, &steam_devices);
|
|
mutex_unlock(&steam_devices_lock);
|
|
}
|
|
|
|
mutex_lock(&steam->mutex);
|
|
client_opened = steam->client_opened;
|
|
if (!client_opened)
|
|
steam_set_lizard_mode(steam, lizard_mode);
|
|
mutex_unlock(&steam->mutex);
|
|
|
|
if (!client_opened)
|
|
ret = steam_input_register(steam);
|
|
else
|
|
ret = 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void steam_unregister(struct steam_device *steam)
|
|
{
|
|
steam_battery_unregister(steam);
|
|
steam_input_unregister(steam);
|
|
if (steam->serial_no[0]) {
|
|
hid_info(steam->hdev, "Steam Controller '%s' disconnected",
|
|
steam->serial_no);
|
|
mutex_lock(&steam_devices_lock);
|
|
list_del_init(&steam->list);
|
|
mutex_unlock(&steam_devices_lock);
|
|
steam->serial_no[0] = 0;
|
|
}
|
|
}
|
|
|
|
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 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;
|
|
|
|
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 = hdev->driver_data;
|
|
|
|
mutex_lock(&steam->mutex);
|
|
steam->client_opened = true;
|
|
mutex_unlock(&steam->mutex);
|
|
|
|
steam_input_unregister(steam);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void steam_client_ll_close(struct hid_device *hdev)
|
|
{
|
|
struct steam_device *steam = hdev->driver_data;
|
|
|
|
unsigned long flags;
|
|
bool connected;
|
|
|
|
spin_lock_irqsave(&steam->lock, flags);
|
|
connected = steam->connected;
|
|
spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
|
mutex_lock(&steam->mutex);
|
|
steam->client_opened = false;
|
|
if (connected)
|
|
steam_set_lizard_mode(steam, lizard_mode);
|
|
mutex_unlock(&steam->mutex);
|
|
|
|
if (connected)
|
|
steam_input_register(steam);
|
|
}
|
|
|
|
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 = hdev->driver_data;
|
|
|
|
return hid_hw_raw_request(steam->hdev, reportnum, buf, count,
|
|
report_type, reqtype);
|
|
}
|
|
|
|
static const 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;
|
|
strscpy(client_hdev->name, hdev->name,
|
|
sizeof(client_hdev->name));
|
|
strscpy(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);
|
|
INIT_LIST_HEAD(&steam->list);
|
|
INIT_DEFERRABLE_WORK(&steam->heartbeat, steam_lizard_mode_heartbeat);
|
|
INIT_WORK(&steam->rumble_work, steam_haptic_rumble_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;
|
|
}
|
|
steam->client_hdev->driver_data = 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;
|
|
|
|
ret = hid_hw_open(hdev);
|
|
if (ret) {
|
|
hid_err(hdev,
|
|
"%s:hid_hw_open\n",
|
|
__func__);
|
|
goto hid_hw_open_fail;
|
|
}
|
|
|
|
if (steam->quirks & STEAM_QUIRK_WIRELESS) {
|
|
hid_info(hdev, "Steam wireless receiver connected");
|
|
/* If using a wireless adaptor ask for connection status */
|
|
steam->connected = false;
|
|
steam_request_conn_status(steam);
|
|
} else {
|
|
/* A wired connection is always present */
|
|
steam->connected = true;
|
|
ret = steam_register(steam);
|
|
if (ret) {
|
|
hid_err(hdev,
|
|
"%s:steam_register failed with error %d\n",
|
|
__func__, ret);
|
|
goto input_register_fail;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
input_register_fail:
|
|
hid_hw_open_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);
|
|
cancel_delayed_work_sync(&steam->heartbeat);
|
|
cancel_work_sync(&steam->rumble_work);
|
|
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;
|
|
}
|
|
|
|
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");
|
|
}
|
|
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;
|
|
bool changed;
|
|
|
|
spin_lock_irqsave(&steam->lock, flags);
|
|
changed = steam->connected != connected;
|
|
steam->connected = connected;
|
|
spin_unlock_irqrestore(&steam->lock, flags);
|
|
|
|
if (changed && 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 | 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_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 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:
|
|
* 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)
|
|
* 0x09: Steam Deck input data (56 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);
|
|
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:
|
|
* 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) {
|
|
mutex_lock(&steam->mutex);
|
|
if (!steam->client_opened)
|
|
steam_set_lizard_mode(steam, lizard_mode);
|
|
mutex_unlock(&steam->mutex);
|
|
}
|
|
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
|
|
},
|
|
{ /* Steam Deck */
|
|
HID_USB_DEVICE(USB_VENDOR_ID_VALVE,
|
|
USB_DEVICE_ID_STEAM_DECK),
|
|
.driver_data = STEAM_QUIRK_DECK
|
|
},
|
|
{}
|
|
};
|
|
|
|
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);
|