1 /* 2 * Fujitsu B-series Lifebook PS/2 TouchScreen driver 3 * 4 * Copyright (c) 2005 Vojtech Pavlik <vojtech@suse.cz> 5 * Copyright (c) 2005 Kenan Esau <kenan.esau@conan.de> 6 * 7 * TouchScreen detection, absolute mode setting and packet layout is taken from 8 * Harald Hoyer's description of the device. 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License version 2 as published by 12 * the Free Software Foundation. 13 */ 14 15 #include <linux/input.h> 16 #include <linux/serio.h> 17 #include <linux/libps2.h> 18 #include <linux/dmi.h> 19 20 #include "psmouse.h" 21 #include "lifebook.h" 22 23 struct lifebook_data { 24 struct input_dev *dev2; /* Relative device */ 25 char phys[32]; 26 }; 27 28 static const char *desired_serio_phys; 29 30 static int lifebook_set_serio_phys(const struct dmi_system_id *d) 31 { 32 desired_serio_phys = d->driver_data; 33 return 0; 34 } 35 36 static bool lifebook_use_6byte_proto; 37 38 static int lifebook_set_6byte_proto(const struct dmi_system_id *d) 39 { 40 lifebook_use_6byte_proto = true; 41 return 0; 42 } 43 44 static const struct dmi_system_id lifebook_dmi_table[] = { 45 { 46 .ident = "FLORA-ie 55mi", 47 .matches = { 48 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"), 49 }, 50 }, 51 { 52 .ident = "LifeBook B", 53 .matches = { 54 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"), 55 }, 56 }, 57 { 58 .ident = "Lifebook B", 59 .matches = { 60 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), 61 }, 62 }, 63 { 64 .ident = "Lifebook B-2130", 65 .matches = { 66 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"), 67 }, 68 }, 69 { 70 .ident = "Lifebook B213x/B2150", 71 .matches = { 72 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"), 73 }, 74 }, 75 { 76 .ident = "Zephyr", 77 .matches = { 78 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"), 79 }, 80 }, 81 { 82 .ident = "CF-18", 83 .matches = { 84 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"), 85 }, 86 .callback = lifebook_set_serio_phys, 87 .driver_data = "isa0060/serio3", 88 }, 89 { 90 .ident = "Panasonic CF-28", 91 .matches = { 92 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 93 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"), 94 }, 95 .callback = lifebook_set_6byte_proto, 96 }, 97 { 98 .ident = "Panasonic CF-29", 99 .matches = { 100 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 101 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"), 102 }, 103 .callback = lifebook_set_6byte_proto, 104 }, 105 { 106 .ident = "CF-72", 107 .matches = { 108 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"), 109 }, 110 .callback = lifebook_set_serio_phys, 111 .driver_data = "isa0060/serio3", 112 }, 113 { 114 .ident = "Lifebook B142", 115 .matches = { 116 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), 117 }, 118 }, 119 { } 120 }; 121 122 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) 123 { 124 struct lifebook_data *priv = psmouse->private; 125 struct input_dev *dev1 = psmouse->dev; 126 struct input_dev *dev2 = priv ? priv->dev2 : NULL; 127 unsigned char *packet = psmouse->packet; 128 bool relative_packet = packet[0] & 0x08; 129 130 if (relative_packet || !lifebook_use_6byte_proto) { 131 if (psmouse->pktcnt != 3) 132 return PSMOUSE_GOOD_DATA; 133 } else { 134 switch (psmouse->pktcnt) { 135 case 1: 136 return (packet[0] & 0xf8) == 0x00 ? 137 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 138 case 2: 139 return PSMOUSE_GOOD_DATA; 140 case 3: 141 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ? 142 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 143 case 4: 144 return (packet[3] & 0xf8) == 0xc0 ? 145 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 146 case 5: 147 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ? 148 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 149 case 6: 150 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0)) 151 return PSMOUSE_BAD_DATA; 152 if ((packet[5] & 0xc0) != (packet[1] & 0xc0)) 153 return PSMOUSE_BAD_DATA; 154 break; /* report data */ 155 } 156 } 157 158 if (relative_packet) { 159 if (!dev2) 160 printk(KERN_WARNING "lifebook.c: got relative packet " 161 "but no relative device set up\n"); 162 } else { 163 if (lifebook_use_6byte_proto) { 164 input_report_abs(dev1, ABS_X, 165 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f)); 166 input_report_abs(dev1, ABS_Y, 167 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f))); 168 } else { 169 input_report_abs(dev1, ABS_X, 170 (packet[1] | ((packet[0] & 0x30) << 4))); 171 input_report_abs(dev1, ABS_Y, 172 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); 173 } 174 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04); 175 input_sync(dev1); 176 } 177 178 if (dev2) { 179 if (relative_packet) { 180 input_report_rel(dev2, REL_X, 181 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1])); 182 input_report_rel(dev2, REL_Y, 183 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2])); 184 } 185 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01); 186 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02); 187 input_sync(dev2); 188 } 189 190 return PSMOUSE_FULL_PACKET; 191 } 192 193 static int lifebook_absolute_mode(struct psmouse *psmouse) 194 { 195 struct ps2dev *ps2dev = &psmouse->ps2dev; 196 unsigned char param; 197 198 if (psmouse_reset(psmouse)) 199 return -1; 200 201 /* 202 Enable absolute output -- ps2_command fails always but if 203 you leave this call out the touchsreen will never send 204 absolute coordinates 205 */ 206 param = lifebook_use_6byte_proto ? 0x08 : 0x07; 207 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 208 209 return 0; 210 } 211 212 static void lifebook_relative_mode(struct psmouse *psmouse) 213 { 214 struct ps2dev *ps2dev = &psmouse->ps2dev; 215 unsigned char param = 0x06; 216 217 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 218 } 219 220 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) 221 { 222 static const unsigned char params[] = { 0, 1, 2, 2, 3 }; 223 unsigned char p; 224 225 if (resolution == 0 || resolution > 400) 226 resolution = 400; 227 228 p = params[resolution / 100]; 229 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); 230 psmouse->resolution = 50 << p; 231 } 232 233 static void lifebook_disconnect(struct psmouse *psmouse) 234 { 235 struct lifebook_data *priv = psmouse->private; 236 237 psmouse_reset(psmouse); 238 if (priv) { 239 input_unregister_device(priv->dev2); 240 kfree(priv); 241 } 242 psmouse->private = NULL; 243 } 244 245 int lifebook_detect(struct psmouse *psmouse, bool set_properties) 246 { 247 if (!dmi_check_system(lifebook_dmi_table)) 248 return -1; 249 250 if (desired_serio_phys && 251 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys)) 252 return -1; 253 254 if (set_properties) { 255 psmouse->vendor = "Fujitsu"; 256 psmouse->name = "Lifebook TouchScreen"; 257 } 258 259 return 0; 260 } 261 262 static int lifebook_create_relative_device(struct psmouse *psmouse) 263 { 264 struct input_dev *dev2; 265 struct lifebook_data *priv; 266 int error = -ENOMEM; 267 268 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL); 269 dev2 = input_allocate_device(); 270 if (!priv || !dev2) 271 goto err_out; 272 273 priv->dev2 = dev2; 274 snprintf(priv->phys, sizeof(priv->phys), 275 "%s/input1", psmouse->ps2dev.serio->phys); 276 277 dev2->phys = priv->phys; 278 dev2->name = "PS/2 Touchpad"; 279 dev2->id.bustype = BUS_I8042; 280 dev2->id.vendor = 0x0002; 281 dev2->id.product = PSMOUSE_LIFEBOOK; 282 dev2->id.version = 0x0000; 283 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 284 285 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 286 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 287 dev2->keybit[BIT_WORD(BTN_LEFT)] = BIT_MASK(BTN_LEFT) | 288 BIT_MASK(BTN_RIGHT); 289 290 error = input_register_device(priv->dev2); 291 if (error) 292 goto err_out; 293 294 psmouse->private = priv; 295 return 0; 296 297 err_out: 298 input_free_device(dev2); 299 kfree(priv); 300 return error; 301 } 302 303 int lifebook_init(struct psmouse *psmouse) 304 { 305 struct input_dev *dev1 = psmouse->dev; 306 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024; 307 308 if (lifebook_absolute_mode(psmouse)) 309 return -1; 310 311 dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY); 312 dev1->relbit[0] = 0; 313 dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); 314 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0); 315 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0); 316 317 if (!desired_serio_phys) { 318 if (lifebook_create_relative_device(psmouse)) { 319 lifebook_relative_mode(psmouse); 320 return -1; 321 } 322 } 323 324 psmouse->protocol_handler = lifebook_process_byte; 325 psmouse->set_resolution = lifebook_set_resolution; 326 psmouse->disconnect = lifebook_disconnect; 327 psmouse->reconnect = lifebook_absolute_mode; 328 329 psmouse->model = lifebook_use_6byte_proto ? 6 : 3; 330 331 /* 332 * Use packet size = 3 even when using 6-byte protocol because 333 * that's what POLL will return on Lifebooks (according to spec). 334 */ 335 psmouse->pktsize = 3; 336 337 return 0; 338 } 339 340