| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * HID driver for Retrode 2 controller adapter and plug-in extensions |
| 3 | * |
| 4 | * Copyright (c) 2017 Bastien Nocera <hadess@hadess.net> |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the Free |
| 10 | * Software Foundation; either version 2 of the License, or (at your option) |
| 11 | * any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/input.h> |
| 15 | #include <linux/slab.h> |
| 16 | #include <linux/hid.h> |
| 17 | #include <linux/module.h> |
| 18 | #include "hid-ids.h" |
| 19 | |
| 20 | #define CONTROLLER_NAME_BASE "Retrode" |
| 21 | |
| 22 | static int retrode_input_configured(struct hid_device *hdev, |
| 23 | struct hid_input *hi) |
| 24 | { |
| 25 | struct hid_field *field = hi->report->field[0]; |
| 26 | const char *suffix; |
| 27 | int number = 0; |
| 28 | char *name; |
| 29 | |
| 30 | switch (field->report->id) { |
| 31 | case 0: |
| 32 | suffix = "SNES Mouse"; |
| 33 | break; |
| 34 | case 1: |
| 35 | case 2: |
| 36 | suffix = "SNES / N64"; |
| 37 | number = field->report->id; |
| 38 | break; |
| 39 | case 3: |
| 40 | case 4: |
| 41 | suffix = "Mega Drive"; |
| 42 | number = field->report->id - 2; |
| 43 | break; |
| 44 | default: |
| 45 | hid_err(hdev, "Got unhandled report id %d\n", field->report->id); |
| 46 | suffix = "Unknown"; |
| 47 | } |
| 48 | |
| 49 | if (number) |
| 50 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
| 51 | "%s %s #%d", CONTROLLER_NAME_BASE, |
| 52 | suffix, number); |
| 53 | else |
| 54 | name = devm_kasprintf(&hdev->dev, GFP_KERNEL, |
| 55 | "%s %s", CONTROLLER_NAME_BASE, suffix); |
| 56 | |
| 57 | if (!name) |
| 58 | return -ENOMEM; |
| 59 | |
| 60 | hi->input->name = name; |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | static int retrode_probe(struct hid_device *hdev, |
| 66 | const struct hid_device_id *id) |
| 67 | { |
| 68 | |
| 69 | int ret; |
| 70 | |
| 71 | /* Has no effect on the mouse device */ |
| 72 | hdev->quirks |= HID_QUIRK_MULTI_INPUT; |
| 73 | |
| 74 | ret = hid_parse(hdev); |
| 75 | if (ret) |
| 76 | return ret; |
| 77 | |
| 78 | ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); |
| 79 | if (ret) |
| 80 | return ret; |
| 81 | |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static const struct hid_device_id retrode_devices[] = { |
| 86 | { HID_USB_DEVICE(USB_VENDOR_ID_FUTURE_TECHNOLOGY, USB_DEVICE_ID_RETRODE2) }, |
| 87 | { } |
| 88 | }; |
| 89 | MODULE_DEVICE_TABLE(hid, retrode_devices); |
| 90 | |
| 91 | static struct hid_driver retrode_driver = { |
| 92 | .name = "hid-retrode", |
| 93 | .id_table = retrode_devices, |
| 94 | .input_configured = retrode_input_configured, |
| 95 | .probe = retrode_probe, |
| 96 | }; |
| 97 | |
| 98 | module_hid_driver(retrode_driver); |
| 99 | |
| 100 | MODULE_LICENSE("GPL"); |