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| Rev | Author | Line No. | Line |
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| 519 | mauro | 1 | /* |
| 2 | * $Id: mouse.c,v 1.1 2004-03-22 14:48:15 mauro Exp $ |
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| 3 | * |
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| 4 | * Copyright (c) 1999-2001 Vojtech Pavlik |
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| 5 | */ |
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| 6 | |||
| 7 | /* |
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| 8 | * Input driver event debug module - dumps all events into syslog |
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| 9 | */ |
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| 10 | |||
| 11 | /* |
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| 12 | * This program is free software; you can redistribute it and/or modify |
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| 13 | * it under the terms of the GNU General Public License as published by |
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| 14 | * the Free Software Foundation; either version 2 of the License, or |
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| 15 | * (at your option) any later version. |
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| 16 | * |
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| 17 | * This program is distributed in the hope that it will be useful, |
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| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 20 | * GNU General Public License for more details. |
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| 21 | */ |
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| 22 | |||
| 23 | #include <linuxcomp.h> |
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| 24 | |||
| 25 | #include <linux/slab.h> |
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| 26 | #include <linux/module.h> |
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| 27 | #include <linux/input.h> |
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| 28 | #include <linux/init.h> |
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| 29 | #include <linux/device.h> |
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| 30 | |||
| 31 | #define DEBUG_MOUSE |
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| 32 | |||
| 33 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
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| 34 | MODULE_DESCRIPTION("Input driver event debug module"); |
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| 35 | MODULE_LICENSE("GPL"); |
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| 36 | |||
| 37 | extern void shark_mouse_task(void); |
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| 38 | |||
| 39 | #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_X |
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| 40 | #define CONFIG_INPUT_MOUSEDEV_SCREEN_X 1024 |
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| 41 | #endif |
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| 42 | #ifndef CONFIG_INPUT_MOUSEDEV_SCREEN_Y |
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| 43 | #define CONFIG_INPUT_MOUSEDEV_SCREEN_Y 768 |
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| 44 | #endif |
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| 45 | |||
| 46 | static int xres = CONFIG_INPUT_MOUSEDEV_SCREEN_X; |
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| 47 | static int yres = CONFIG_INPUT_MOUSEDEV_SCREEN_Y; |
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| 48 | |||
| 49 | /* Buffer Ssize */ |
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| 50 | #define MOUSE_BUFFERSIZE 256 |
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| 51 | |||
| 52 | /* Buffer Mask ( i=(i+1)&MASK is better than i=(i+1)%SIZE ) */ |
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| 53 | #define MOUSE_BUFFERMASK 0xff |
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| 54 | |||
| 55 | /* Circular Buffer */ |
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| 56 | static struct mouse_event { |
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| 57 | unsigned long buttons; |
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| 58 | int dx, dy, dz; |
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| 59 | } mbuffer[MOUSE_BUFFERSIZE]; |
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| 60 | |||
| 61 | /* |
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| 62 | * Buffer Pointers |
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| 63 | * data is inserted to mhead |
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| 64 | * data is kept from mtail+1 |
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| 65 | * (mhead point to mtail+1 when buffer is empty) |
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| 66 | */ |
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| 67 | static unsigned mtail, mhead; |
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| 68 | |||
| 69 | static char mouse_name[] = "mouse"; |
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| 70 | |||
| 71 | struct mouse_list { |
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| 72 | int dx, dy, dz, oldx, oldy; |
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| 73 | signed char ps2[6]; |
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| 74 | unsigned long buttons; |
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| 75 | /*unsigned char ready, buffer, bufsiz; |
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| 76 | unsigned char mode, imexseq, impsseq;*/ |
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| 77 | int finger; |
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| 78 | }; |
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| 79 | |||
| 80 | static struct mouse_list m_list; |
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| 81 | static struct mouse_list *list = &m_list; |
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| 82 | |||
| 83 | /* |
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| 84 | * Get data from the mouse |
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| 85 | * |
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| 86 | * it's follow the port_receive() semantic |
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| 87 | */ |
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| 88 | int mouse_get(int *dx, int *dy, int *dz, unsigned long *buttons) |
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| 89 | { |
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| 90 | if ( ((mtail+1) & MOUSE_BUFFERMASK) == ((mhead) & MOUSE_BUFFERMASK) ) |
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| 91 | return -1; |
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| 92 | |||
| 93 | mtail = (mtail+1) & MOUSE_BUFFERMASK; |
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| 94 | |||
| 95 | *dx = mbuffer[mtail].dx; |
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| 96 | *dy = mbuffer[mtail].dy; |
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| 97 | *dz = mbuffer[mtail].dx; |
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| 98 | *buttons = mbuffer[mtail].buttons; |
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| 99 | |||
| 100 | return 0; |
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| 101 | } |
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| 102 | |||
| 103 | static void mouse_abs_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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| 104 | { |
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| 105 | int size; |
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| 106 | |||
| 107 | /* Ignore joysticks */ |
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| 108 | if (test_bit(BTN_TRIGGER, handle->dev->keybit)) |
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| 109 | return; |
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| 110 | |||
| 111 | /* Handle touchpad data */ |
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| 112 | if (test_bit(BTN_TOOL_FINGER, handle->dev->keybit)) { |
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| 113 | |||
| 114 | if (list->finger && list->finger < 3) |
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| 115 | list->finger++; |
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| 116 | |||
| 117 | switch (code) { |
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| 118 | case ABS_X: |
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| 119 | if (list->finger == 3) |
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| 120 | list->dx += (value - list->oldx) / 8; |
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| 121 | list->oldx = value; |
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| 122 | return; |
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| 123 | case ABS_Y: |
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| 124 | if (list->finger == 3) |
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| 125 | list->dy -= (value - list->oldy) / 8; |
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| 126 | list->oldy = value; |
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| 127 | return; |
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| 128 | } |
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| 129 | return; |
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| 130 | } |
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| 131 | |||
| 132 | /* Handle tablet data */ |
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| 133 | switch (code) { |
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| 134 | case ABS_X: |
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| 135 | size = handle->dev->absmax[ABS_X] - handle->dev->absmin[ABS_X]; |
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| 136 | if (size == 0) size = xres; |
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| 137 | list->dx += (value * xres - list->oldx) / size; |
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| 138 | list->oldx += list->dx * size; |
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| 139 | return; |
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| 140 | case ABS_Y: |
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| 141 | size = handle->dev->absmax[ABS_Y] - handle->dev->absmin[ABS_Y]; |
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| 142 | if (size == 0) size = yres; |
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| 143 | list->dy -= (value * yres - list->oldy) / size; |
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| 144 | list->oldy -= list->dy * size; |
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| 145 | return; |
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| 146 | } |
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| 147 | } |
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| 148 | |||
| 149 | static void mouse_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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| 150 | { |
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| 151 | int index; |
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| 152 | |||
| 153 | #ifdef DEBUG_MOUSE |
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| 154 | printk(KERN_DEBUG "mouse.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, code, value); |
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| 155 | #endif |
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| 156 | |||
| 157 | switch (type) { |
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| 158 | case EV_ABS: |
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| 159 | mouse_abs_event(handle, type, code, value); |
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| 160 | break; |
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| 161 | |||
| 162 | case EV_REL: |
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| 163 | switch (code) { |
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| 164 | case REL_X: list->dx += value; break; |
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| 165 | case REL_Y: list->dy -= value; break; |
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| 166 | case REL_WHEEL: list->dz -= value; break; |
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| 167 | } |
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| 168 | break; |
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| 169 | |||
| 170 | case EV_KEY: |
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| 171 | switch (code) { |
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| 172 | case BTN_TOUCH: /* Handle touchpad data */ |
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| 173 | if (test_bit(BTN_TOOL_FINGER, handle->dev->keybit)) { |
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| 174 | list->finger = value; |
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| 175 | return; |
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| 176 | } |
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| 177 | case BTN_0: |
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| 178 | case BTN_FORWARD: |
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| 179 | case BTN_LEFT: index = 0; break; |
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| 180 | case BTN_4: |
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| 181 | case BTN_EXTRA: index = 4; break; |
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| 182 | case BTN_STYLUS: |
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| 183 | case BTN_1: |
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| 184 | case BTN_RIGHT: index = 1; break; |
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| 185 | case BTN_3: |
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| 186 | case BTN_BACK: |
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| 187 | case BTN_SIDE: index = 3; break; |
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| 188 | case BTN_2: |
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| 189 | case BTN_STYLUS2: |
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| 190 | case BTN_MIDDLE: index = 2; break; |
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| 191 | default: return; |
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| 192 | } |
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| 193 | switch (value) { |
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| 194 | case 0: clear_bit(index, &list->buttons); break; |
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| 195 | case 1: set_bit(index, &list->buttons); break; |
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| 196 | case 2: return; |
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| 197 | } |
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| 198 | break; |
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| 199 | |||
| 200 | case EV_SYN: |
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| 201 | switch (code) { |
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| 202 | case SYN_REPORT: |
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| 203 | if (mtail != mhead) { |
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| 204 | mbuffer[mhead].buttons = list->buttons; |
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| 205 | mbuffer[mhead].dx = list->dx; |
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| 206 | mbuffer[mhead].dy = list->dy; |
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| 207 | mbuffer[mhead].dz = list->dz; |
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| 208 | mhead = (mhead+1) & MOUSE_BUFFERMASK; |
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| 209 | list->dx = list->dx = list->dx = 0; |
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| 210 | } |
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| 211 | shark_mouse_task(); |
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| 212 | break; |
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| 213 | } |
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| 214 | } |
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| 215 | } |
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| 216 | |||
| 217 | static struct input_handle *mouse_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id) |
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| 218 | { |
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| 219 | struct input_handle *handle; |
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| 220 | |||
| 221 | if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL))) |
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| 222 | return NULL; |
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| 223 | memset(handle, 0, sizeof(struct input_handle)); |
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| 224 | |||
| 225 | handle->dev = dev; |
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| 226 | handle->handler = handler; |
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| 227 | handle->name = mouse_name; |
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| 228 | |||
| 229 | input_open_device(handle); |
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| 230 | |||
| 231 | #ifdef DEBUG_MOUSE |
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| 232 | printk(KERN_DEBUG "mouse.c: Connected device: \"%s\", %s\n", dev->name, dev->phys); |
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| 233 | #endif |
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| 234 | |||
| 235 | return handle; |
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| 236 | } |
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| 237 | |||
| 238 | static void mouse_disconnect(struct input_handle *handle) |
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| 239 | { |
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| 240 | #ifdef DEBUG_MOUSE |
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| 241 | printk(KERN_DEBUG "mouse.c: Disconnected device: %s\n", handle->dev->phys); |
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| 242 | #endif |
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| 243 | |||
| 244 | input_close_device(handle); |
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| 245 | |||
| 246 | kfree(handle); |
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| 247 | } |
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| 248 | |||
| 249 | /*static struct input_device_id mouse_ids[] = { |
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| 250 | { .driver_info = 1 }, // Matches all devices |
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| 251 | { }, // Terminating zero entry |
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| 252 | };*/ |
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| 253 | |||
| 254 | static struct input_device_id mouse_ids[] = { |
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| 255 | { |
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| 256 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_RELBIT, |
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| 257 | .evbit = { BIT(EV_KEY) | BIT(EV_REL) }, |
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| 258 | .keybit = { [LONG(BTN_LEFT)] = BIT(BTN_LEFT) }, |
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| 259 | .relbit = { BIT(REL_X) | BIT(REL_Y) }, |
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| 260 | }, // A mouse like device, at least one button, two relative axes |
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| 261 | { |
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| 262 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_RELBIT, |
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| 263 | .evbit = { BIT(EV_KEY) | BIT(EV_REL) }, |
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| 264 | .relbit = { BIT(REL_WHEEL) }, |
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| 265 | }, // A separate scrollwheel |
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| 266 | { |
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| 267 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
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| 268 | .evbit = { BIT(EV_KEY) | BIT(EV_ABS) }, |
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| 269 | .keybit = { [LONG(BTN_TOUCH)] = BIT(BTN_TOUCH) }, |
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| 270 | .absbit = { BIT(ABS_X) | BIT(ABS_Y) }, |
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| 271 | }, // A tablet like device, at least touch detection, two absolute axes |
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| 272 | { |
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| 273 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT | INPUT_DEVICE_ID_MATCH_ABSBIT, |
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| 274 | .evbit = { BIT(EV_KEY) | BIT(EV_ABS) }, |
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| 275 | .keybit = { [LONG(BTN_TOOL_FINGER)] = BIT(BTN_TOOL_FINGER) }, |
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| 276 | .absbit = { BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE) | BIT(ABS_TOOL_WIDTH) }, |
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| 277 | }, // A touchpad |
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| 278 | |||
| 279 | { }, // Terminating entry |
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| 280 | }; |
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| 281 | |||
| 282 | MODULE_DEVICE_TABLE(input, mouse_ids); |
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| 283 | |||
| 284 | static struct input_handler mouse_handler = { |
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| 285 | .event = mouse_event, |
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| 286 | .connect = mouse_connect, |
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| 287 | .disconnect = mouse_disconnect, |
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| 288 | .name = "mouse", |
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| 289 | .id_table = mouse_ids, |
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| 290 | }; |
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| 291 | |||
| 292 | int __init mouse_init(void) |
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| 293 | { |
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| 294 | input_register_handler(&mouse_handler); |
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| 295 | return 0; |
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| 296 | } |
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| 297 | |||
| 298 | void __exit mouse_exit(void) |
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| 299 | { |
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| 300 | input_unregister_handler(&mouse_handler); |
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| 301 | } |
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| 302 | |||
| 303 | module_init(mouse_init); |
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| 304 | module_exit(mouse_exit); |