1 /* 2 * Stowaway keyboard driver for Linux 3 */ 4 5 /* 6 * Copyright (c) 2006 Marek Vasut 7 * 8 * Based on Newton keyboard driver for Linux 9 * by Justin Cormack 10 */ 11 12 /* 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License as published by 15 * the Free Software Foundation; either version 2 of the License, or 16 * (at your option) any later version. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public License 24 * along with this program; if not, write to the Free Software 25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 26 * 27 * Should you need to contact me, the author, you can do so either by 28 * e-mail - mail your message to <marek.vasut@gmail.com>, or by paper mail: 29 * Marek Vasut, Liskovecka 559, Frydek-Mistek, 738 01 Czech Republic 30 */ 31 32 #include <linux/slab.h> 33 #include <linux/module.h> 34 #include <linux/input.h> 35 #include <linux/serio.h> 36 37 #define DRIVER_DESC "Stowaway keyboard driver" 38 39 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>"); 40 MODULE_DESCRIPTION(DRIVER_DESC); 41 MODULE_LICENSE("GPL"); 42 43 #define SKBD_KEY_MASK 0x7f 44 #define SKBD_RELEASE 0x80 45 46 static unsigned char skbd_keycode[128] = { 47 KEY_1, KEY_2, KEY_3, KEY_Z, KEY_4, KEY_5, KEY_6, KEY_7, 48 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_GRAVE, 49 KEY_X, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_SPACE, 50 KEY_CAPSLOCK, KEY_TAB, KEY_LEFTCTRL, 0, 0, 0, 0, 0, 51 0, 0, 0, KEY_LEFTALT, 0, 0, 0, 0, 52 0, 0, 0, 0, KEY_C, KEY_V, KEY_B, KEY_N, 53 KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, KEY_HOME, KEY_8, KEY_9, KEY_0, KEY_ESC, 54 KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, KEY_END, KEY_U, KEY_I, KEY_O, KEY_P, 55 KEY_APOSTROPHE, KEY_ENTER, KEY_PAGEUP,0, KEY_J, KEY_K, KEY_L, KEY_SEMICOLON, 56 KEY_SLASH, KEY_UP, KEY_PAGEDOWN, 0,KEY_M, KEY_COMMA, KEY_DOT, KEY_INSERT, 57 KEY_DELETE, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 58 KEY_LEFTSHIFT, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 59 0, 0, 0, 0, 0, 0, 0, 0, 60 0, 0, 0, 0, 0, 0, 0, 0, 61 0, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, 62 KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_F12, 0, 0, 0 63 }; 64 65 struct skbd { 66 unsigned char keycode[128]; 67 struct input_dev *dev; 68 struct serio *serio; 69 char phys[32]; 70 }; 71 72 static irqreturn_t skbd_interrupt(struct serio *serio, unsigned char data, 73 unsigned int flags) 74 { 75 struct skbd *skbd = serio_get_drvdata(serio); 76 struct input_dev *dev = skbd->dev; 77 78 if (skbd->keycode[data & SKBD_KEY_MASK]) { 79 input_report_key(dev, skbd->keycode[data & SKBD_KEY_MASK], 80 !(data & SKBD_RELEASE)); 81 input_sync(dev); 82 } 83 84 return IRQ_HANDLED; 85 } 86 87 static int skbd_connect(struct serio *serio, struct serio_driver *drv) 88 { 89 struct skbd *skbd; 90 struct input_dev *input_dev; 91 int err = -ENOMEM; 92 int i; 93 94 skbd = kzalloc(sizeof(struct skbd), GFP_KERNEL); 95 input_dev = input_allocate_device(); 96 if (!skbd || !input_dev) 97 goto fail1; 98 99 skbd->serio = serio; 100 skbd->dev = input_dev; 101 snprintf(skbd->phys, sizeof(skbd->phys), "%s/input0", serio->phys); 102 memcpy(skbd->keycode, skbd_keycode, sizeof(skbd->keycode)); 103 104 input_dev->name = "Stowaway Keyboard"; 105 input_dev->phys = skbd->phys; 106 input_dev->id.bustype = BUS_RS232; 107 input_dev->id.vendor = SERIO_STOWAWAY; 108 input_dev->id.product = 0x0001; 109 input_dev->id.version = 0x0100; 110 input_dev->dev.parent = &serio->dev; 111 112 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); 113 input_dev->keycode = skbd->keycode; 114 input_dev->keycodesize = sizeof(unsigned char); 115 input_dev->keycodemax = ARRAY_SIZE(skbd_keycode); 116 for (i = 0; i < ARRAY_SIZE(skbd_keycode); i++) 117 set_bit(skbd_keycode[i], input_dev->keybit); 118 clear_bit(0, input_dev->keybit); 119 120 serio_set_drvdata(serio, skbd); 121 122 err = serio_open(serio, drv); 123 if (err) 124 goto fail2; 125 126 err = input_register_device(skbd->dev); 127 if (err) 128 goto fail3; 129 130 return 0; 131 132 fail3: serio_close(serio); 133 fail2: serio_set_drvdata(serio, NULL); 134 fail1: input_free_device(input_dev); 135 kfree(skbd); 136 return err; 137 } 138 139 static void skbd_disconnect(struct serio *serio) 140 { 141 struct skbd *skbd = serio_get_drvdata(serio); 142 143 serio_close(serio); 144 serio_set_drvdata(serio, NULL); 145 input_unregister_device(skbd->dev); 146 kfree(skbd); 147 } 148 149 static struct serio_device_id skbd_serio_ids[] = { 150 { 151 .type = SERIO_RS232, 152 .proto = SERIO_STOWAWAY, 153 .id = SERIO_ANY, 154 .extra = SERIO_ANY, 155 }, 156 { 0 } 157 }; 158 159 MODULE_DEVICE_TABLE(serio, skbd_serio_ids); 160 161 static struct serio_driver skbd_drv = { 162 .driver = { 163 .name = "stowaway", 164 }, 165 .description = DRIVER_DESC, 166 .id_table = skbd_serio_ids, 167 .interrupt = skbd_interrupt, 168 .connect = skbd_connect, 169 .disconnect = skbd_disconnect, 170 }; 171 172 module_serio_driver(skbd_drv); 173