diff options
Diffstat (limited to 'drivers/hid/hid-winwing.c')
| -rw-r--r-- | drivers/hid/hid-winwing.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/hid/hid-winwing.c b/drivers/hid/hid-winwing.c new file mode 100644 index 000000000000..ab65dc12d1e0 --- /dev/null +++ b/drivers/hid/hid-winwing.c @@ -0,0 +1,268 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * HID driver for WinWing Orion 2 throttle + * + * Copyright (c) 2023 Ivan Gorinov + */ + +#include <linux/device.h> +#include <linux/hid.h> +#include <linux/hidraw.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> + +#define MAX_REPORT 16 + +struct winwing_led { + struct led_classdev cdev; + struct hid_device *hdev; + int number; +}; + +struct winwing_led_info { + int number; + int max_brightness; + const char *led_name; +}; + +static const struct winwing_led_info led_info[3] = { + { 0, 255, "backlight" }, + { 1, 1, "a-a" }, + { 2, 1, "a-g" }, +}; + +struct winwing_drv_data { + struct hid_device *hdev; + __u8 *report_buf; + struct mutex lock; + int map_more_buttons; + unsigned int num_leds; + struct winwing_led leds[]; +}; + +static int winwing_led_write(struct led_classdev *cdev, + enum led_brightness br) +{ + struct winwing_led *led = (struct winwing_led *) cdev; + struct winwing_drv_data *data = hid_get_drvdata(led->hdev); + __u8 *buf = data->report_buf; + int ret; + + mutex_lock(&data->lock); + + buf[0] = 0x02; + buf[1] = 0x60; + buf[2] = 0xbe; + buf[3] = 0x00; + buf[4] = 0x00; + buf[5] = 0x03; + buf[6] = 0x49; + buf[7] = led->number; + buf[8] = br; + buf[9] = 0x00; + buf[10] = 0; + buf[11] = 0; + buf[12] = 0; + buf[13] = 0; + + ret = hid_hw_output_report(led->hdev, buf, 14); + + mutex_unlock(&data->lock); + + return ret; +} + +static int winwing_init_led(struct hid_device *hdev, + struct input_dev *input) +{ + struct winwing_drv_data *data; + struct winwing_led *led; + int ret; + int i; + + data = hid_get_drvdata(hdev); + + if (!data) + return -EINVAL; + + data->report_buf = devm_kmalloc(&hdev->dev, MAX_REPORT, GFP_KERNEL); + + if (!data->report_buf) + return -ENOMEM; + + for (i = 0; i < 3; i += 1) { + const struct winwing_led_info *info = &led_info[i]; + + led = &data->leds[i]; + led->hdev = hdev; + led->number = info->number; + led->cdev.max_brightness = info->max_brightness; + led->cdev.brightness_set_blocking = winwing_led_write; + led->cdev.flags = LED_HW_PLUGGABLE; + led->cdev.name = devm_kasprintf(&hdev->dev, GFP_KERNEL, + "%s::%s", + dev_name(&input->dev), + info->led_name); + + if (!led->cdev.name) + return -ENOMEM; + + ret = devm_led_classdev_register(&hdev->dev, &led->cdev); + if (ret) + return ret; + } + + return ret; +} + +static int winwing_map_button(int button, int map_more_buttons) +{ + if (button < 1) + return KEY_RESERVED; + + if (button > 112) + return KEY_RESERVED; + + if (button <= 16) { + /* + * Grip buttons [1 .. 16] are mapped to + * key codes BTN_TRIGGER .. BTN_DEAD + */ + return (button - 1) + BTN_JOYSTICK; + } + + if (button >= 65) { + /* + * Base buttons [65 .. 112] are mapped to + * key codes BTN_TRIGGER_HAPPY17 .. KEY_MAX + */ + return (button - 65) + BTN_TRIGGER_HAPPY17; + } + + if (!map_more_buttons) { + /* + * Not mapping numbers [33 .. 64] which + * are not assigned to any real buttons + */ + if (button >= 33) + return KEY_RESERVED; + /* + * Grip buttons [17 .. 32] are mapped to + * BTN_TRIGGER_HAPPY1 .. BTN_TRIGGER_HAPPY16 + */ + return (button - 17) + BTN_TRIGGER_HAPPY1; + } + + if (button >= 49) { + /* + * Grip buttons [49 .. 64] are mapped to + * BTN_TRIGGER_HAPPY1 .. BTN_TRIGGER_HAPPY16 + */ + return (button - 49) + BTN_TRIGGER_HAPPY1; + } + + /* + * Grip buttons [17 .. 44] are mapped to + * key codes KEY_MACRO1 .. KEY_MACRO28; + * also mapping numbers [45 .. 48] which + * are not assigned to any real buttons. + */ + return (button - 17) + KEY_MACRO1; +} + +static int winwing_input_mapping(struct hid_device *hdev, + struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, + unsigned long **bit, int *max) +{ + struct winwing_drv_data *data; + int code = KEY_RESERVED; + int button = 0; + + data = hid_get_drvdata(hdev); + + if (!data) + return -EINVAL; + + if ((usage->hid & HID_USAGE_PAGE) != HID_UP_BUTTON) + return 0; + + if (field->application != HID_GD_JOYSTICK) + return 0; + + /* Button numbers start with 1 */ + button = usage->hid & HID_USAGE; + + code = winwing_map_button(button, data->map_more_buttons); + + hid_map_usage(hi, usage, bit, max, EV_KEY, code); + + return 1; +} + +static int winwing_probe(struct hid_device *hdev, + const struct hid_device_id *id) +{ + struct winwing_drv_data *data; + size_t data_size = struct_size(data, leds, 3); + int ret; + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "parse failed\n"); + return ret; + } + + data = devm_kzalloc(&hdev->dev, data_size, GFP_KERNEL); + + if (!data) + return -ENOMEM; + + data->map_more_buttons = id->driver_data; + + hid_set_drvdata(hdev, data); + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); + if (ret) { + hid_err(hdev, "hw start failed\n"); + return ret; + } + + return 0; +} + +static int winwing_input_configured(struct hid_device *hdev, + struct hid_input *hidinput) +{ + int ret; + + ret = winwing_init_led(hdev, hidinput->input); + + if (ret) + hid_err(hdev, "led init failed\n"); + + return ret; +} + +static const struct hid_device_id winwing_devices[] = { + { HID_USB_DEVICE(0x4098, 0xbd65), .driver_data = 1 }, /* TGRIP-15E */ + { HID_USB_DEVICE(0x4098, 0xbd64), .driver_data = 1 }, /* TGRIP-15EX */ + { HID_USB_DEVICE(0x4098, 0xbe68), .driver_data = 0 }, /* TGRIP-16EX */ + { HID_USB_DEVICE(0x4098, 0xbe62), .driver_data = 0 }, /* TGRIP-18 */ + {} +}; + +MODULE_DEVICE_TABLE(hid, winwing_devices); + +static struct hid_driver winwing_driver = { + .name = "winwing", + .id_table = winwing_devices, + .input_configured = winwing_input_configured, + .input_mapping = winwing_input_mapping, + .probe = winwing_probe, +}; +module_hid_driver(winwing_driver); + +MODULE_DESCRIPTION("HID driver for WinWing Orion 2 throttle"); +MODULE_LICENSE("GPL"); |