Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 | // SPDX-License-Identifier: GPL-2.0-or-later /* * ION iCade input driver * * Copyright (c) 2012 Bastien Nocera <hadess@hadess.net> * Copyright (c) 2012 Benjamin Tissoires <benjamin.tissoires@gmail.com> */ /* */ #include <linux/device.h> #include <linux/hid.h> #include <linux/module.h> #include "hid-ids.h" /* * ↑ A C Y L * ← → * ↓ B X Z R * * * UP ON,OFF = w,e * RT ON,OFF = d,c * DN ON,OFF = x,z * LT ON,OFF = a,q * A ON,OFF = y,t * B ON,OFF = h,r * C ON,OFF = u,f * X ON,OFF = j,n * Y ON,OFF = i,m * Z ON,OFF = k,p * L ON,OFF = o,g * R ON,OFF = l,v */ /* The translation code uses HID usage instead of input layer * keys. This code generates a lookup table that makes * translation quick. * * #include <linux/input.h> * #include <stdio.h> * #include <assert.h> * * #define unk KEY_UNKNOWN * * < copy of hid_keyboard[] from hid-input.c > * * struct icade_key_translation { * int from; * const char *to; * int press; * }; * * static const struct icade_key_translation icade_keys[] = { * { KEY_W, "KEY_UP", 1 }, * { KEY_E, "KEY_UP", 0 }, * { KEY_D, "KEY_RIGHT", 1 }, * { KEY_C, "KEY_RIGHT", 0 }, * { KEY_X, "KEY_DOWN", 1 }, * { KEY_Z, "KEY_DOWN", 0 }, * { KEY_A, "KEY_LEFT", 1 }, * { KEY_Q, "KEY_LEFT", 0 }, * { KEY_Y, "BTN_A", 1 }, * { KEY_T, "BTN_A", 0 }, * { KEY_H, "BTN_B", 1 }, * { KEY_R, "BTN_B", 0 }, * { KEY_U, "BTN_C", 1 }, * { KEY_F, "BTN_C", 0 }, * { KEY_J, "BTN_X", 1 }, * { KEY_N, "BTN_X", 0 }, * { KEY_I, "BTN_Y", 1 }, * { KEY_M, "BTN_Y", 0 }, * { KEY_K, "BTN_Z", 1 }, * { KEY_P, "BTN_Z", 0 }, * { KEY_O, "BTN_THUMBL", 1 }, * { KEY_G, "BTN_THUMBL", 0 }, * { KEY_L, "BTN_THUMBR", 1 }, * { KEY_V, "BTN_THUMBR", 0 }, * * { } * }; * * static int * usage_for_key (int key) * { * int i; * for (i = 0; i < 256; i++) { * if (hid_keyboard[i] == key) * return i; * } * assert(0); * } * * int main (int argc, char **argv) * { * const struct icade_key_translation *trans; * int max_usage = 0; * * for (trans = icade_keys; trans->from; trans++) { * int usage = usage_for_key (trans->from); * max_usage = usage > max_usage ? usage : max_usage; * } * * printf ("#define ICADE_MAX_USAGE %d\n\n", max_usage); * printf ("struct icade_key {\n"); * printf ("\tu16 to;\n"); * printf ("\tu8 press:1;\n"); * printf ("};\n\n"); * printf ("static const struct icade_key " * "icade_usage_table[%d] = {\n", max_usage + 1); * for (trans = icade_keys; trans->from; trans++) { * printf ("\t[%d] = { %s, %d },\n", * usage_for_key (trans->from), trans->to, trans->press); * } * printf ("};\n"); * * return 0; * } */ #define ICADE_MAX_USAGE 29 struct icade_key { u16 to; u8 press:1; }; static const struct icade_key icade_usage_table[30] = { [26] = { KEY_UP, 1 }, [8] = { KEY_UP, 0 }, [7] = { KEY_RIGHT, 1 }, [6] = { KEY_RIGHT, 0 }, [27] = { KEY_DOWN, 1 }, [29] = { KEY_DOWN, 0 }, [4] = { KEY_LEFT, 1 }, [20] = { KEY_LEFT, 0 }, [28] = { BTN_A, 1 }, [23] = { BTN_A, 0 }, [11] = { BTN_B, 1 }, [21] = { BTN_B, 0 }, [24] = { BTN_C, 1 }, [9] = { BTN_C, 0 }, [13] = { BTN_X, 1 }, [17] = { BTN_X, 0 }, [12] = { BTN_Y, 1 }, [16] = { BTN_Y, 0 }, [14] = { BTN_Z, 1 }, [19] = { BTN_Z, 0 }, [18] = { BTN_THUMBL, 1 }, [10] = { BTN_THUMBL, 0 }, [15] = { BTN_THUMBR, 1 }, [25] = { BTN_THUMBR, 0 }, }; static const struct icade_key *icade_find_translation(u16 from) { if (from > ICADE_MAX_USAGE) return NULL; return &icade_usage_table[from]; } static int icade_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { const struct icade_key *trans; if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || !usage->type) return 0; /* We ignore the fake key up, and act only on key down */ if (!value) return 1; trans = icade_find_translation(usage->hid & HID_USAGE); if (!trans) return 1; input_event(field->hidinput->input, usage->type, trans->to, trans->press); return 1; } static int icade_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { const struct icade_key *trans; if ((usage->hid & HID_USAGE_PAGE) == HID_UP_KEYBOARD) { trans = icade_find_translation(usage->hid & HID_USAGE); if (!trans) return -1; hid_map_usage(hi, usage, bit, max, EV_KEY, trans->to); set_bit(trans->to, hi->input->keybit); return 1; } /* ignore others */ return -1; } static int icade_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { if (usage->type == EV_KEY) set_bit(usage->type, hi->input->evbit); return -1; } static const struct hid_device_id icade_devices[] = { { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) }, { } }; MODULE_DEVICE_TABLE(hid, icade_devices); static struct hid_driver icade_driver = { .name = "icade", .id_table = icade_devices, .event = icade_event, .input_mapped = icade_input_mapped, .input_mapping = icade_input_mapping, }; module_hid_driver(icade_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>"); MODULE_DESCRIPTION("ION iCade input driver"); |