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 bool lifebook_present; 29 30 static const char *desired_serio_phys; 31 32 static int lifebook_limit_serio3(const struct dmi_system_id *d) 33 { 34 desired_serio_phys = "isa0060/serio3"; 35 return 0; 36 } 37 38 static bool lifebook_use_6byte_proto; 39 40 static int lifebook_set_6byte_proto(const struct dmi_system_id *d) 41 { 42 lifebook_use_6byte_proto = true; 43 return 0; 44 } 45 46 static const struct dmi_system_id __initconst lifebook_dmi_table[] = { 47 #if defined(CONFIG_DMI) && defined(CONFIG_X86) 48 { 49 /* FLORA-ie 55mi */ 50 .matches = { 51 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"), 52 }, 53 }, 54 { 55 /* LifeBook B */ 56 .matches = { 57 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"), 58 }, 59 }, 60 { 61 /* Lifebook B */ 62 .matches = { 63 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), 64 }, 65 }, 66 { 67 /* Lifebook B-2130 */ 68 .matches = { 69 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"), 70 }, 71 }, 72 { 73 /* Lifebook B213x/B2150 */ 74 .matches = { 75 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"), 76 }, 77 }, 78 { 79 /* Zephyr */ 80 .matches = { 81 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"), 82 }, 83 }, 84 { 85 /* Panasonic CF-18 */ 86 .matches = { 87 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"), 88 }, 89 .callback = lifebook_limit_serio3, 90 }, 91 { 92 /* Panasonic CF-28 */ 93 .matches = { 94 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 95 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"), 96 }, 97 .callback = lifebook_set_6byte_proto, 98 }, 99 { 100 /* Panasonic CF-29 */ 101 .matches = { 102 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 103 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"), 104 }, 105 .callback = lifebook_set_6byte_proto, 106 }, 107 { 108 /* Panasonic CF-72 */ 109 .matches = { 110 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"), 111 }, 112 .callback = lifebook_set_6byte_proto, 113 }, 114 { 115 /* Lifebook B142 */ 116 .matches = { 117 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), 118 }, 119 }, 120 { } 121 #endif 122 }; 123 124 void __init lifebook_module_init(void) 125 { 126 lifebook_present = dmi_check_system(lifebook_dmi_table); 127 } 128 129 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) 130 { 131 struct lifebook_data *priv = psmouse->private; 132 struct input_dev *dev1 = psmouse->dev; 133 struct input_dev *dev2 = priv ? priv->dev2 : NULL; 134 unsigned char *packet = psmouse->packet; 135 bool relative_packet = packet[0] & 0x08; 136 137 if (relative_packet || !lifebook_use_6byte_proto) { 138 if (psmouse->pktcnt != 3) 139 return PSMOUSE_GOOD_DATA; 140 } else { 141 switch (psmouse->pktcnt) { 142 case 1: 143 return (packet[0] & 0xf8) == 0x00 ? 144 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 145 case 2: 146 return PSMOUSE_GOOD_DATA; 147 case 3: 148 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ? 149 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 150 case 4: 151 return (packet[3] & 0xf8) == 0xc0 ? 152 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 153 case 5: 154 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ? 155 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 156 case 6: 157 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0)) 158 return PSMOUSE_BAD_DATA; 159 if ((packet[5] & 0xc0) != (packet[1] & 0xc0)) 160 return PSMOUSE_BAD_DATA; 161 break; /* report data */ 162 } 163 } 164 165 if (relative_packet) { 166 if (!dev2) 167 printk(KERN_WARNING "lifebook.c: got relative packet " 168 "but no relative device set up\n"); 169 } else { 170 if (lifebook_use_6byte_proto) { 171 input_report_abs(dev1, ABS_X, 172 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f)); 173 input_report_abs(dev1, ABS_Y, 174 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f))); 175 } else { 176 input_report_abs(dev1, ABS_X, 177 (packet[1] | ((packet[0] & 0x30) << 4))); 178 input_report_abs(dev1, ABS_Y, 179 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); 180 } 181 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04); 182 input_sync(dev1); 183 } 184 185 if (dev2) { 186 if (relative_packet) { 187 input_report_rel(dev2, REL_X, 188 ((packet[0] & 0x10) ? packet[1] - 256 : packet[1])); 189 input_report_rel(dev2, REL_Y, 190 -(int)((packet[0] & 0x20) ? packet[2] - 256 : packet[2])); 191 } 192 input_report_key(dev2, BTN_LEFT, packet[0] & 0x01); 193 input_report_key(dev2, BTN_RIGHT, packet[0] & 0x02); 194 input_sync(dev2); 195 } 196 197 return PSMOUSE_FULL_PACKET; 198 } 199 200 static int lifebook_absolute_mode(struct psmouse *psmouse) 201 { 202 struct ps2dev *ps2dev = &psmouse->ps2dev; 203 unsigned char param; 204 205 if (psmouse_reset(psmouse)) 206 return -1; 207 208 /* 209 * Enable absolute output -- ps2_command fails always but if 210 * you leave this call out the touchsreen will never send 211 * absolute coordinates 212 */ 213 param = lifebook_use_6byte_proto ? 0x08 : 0x07; 214 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 215 216 return 0; 217 } 218 219 static void lifebook_relative_mode(struct psmouse *psmouse) 220 { 221 struct ps2dev *ps2dev = &psmouse->ps2dev; 222 unsigned char param = 0x06; 223 224 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 225 } 226 227 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) 228 { 229 static const unsigned char params[] = { 0, 1, 2, 2, 3 }; 230 unsigned char p; 231 232 if (resolution == 0 || resolution > 400) 233 resolution = 400; 234 235 p = params[resolution / 100]; 236 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); 237 psmouse->resolution = 50 << p; 238 } 239 240 static void lifebook_disconnect(struct psmouse *psmouse) 241 { 242 struct lifebook_data *priv = psmouse->private; 243 244 psmouse_reset(psmouse); 245 if (priv) { 246 input_unregister_device(priv->dev2); 247 kfree(priv); 248 } 249 psmouse->private = NULL; 250 } 251 252 int lifebook_detect(struct psmouse *psmouse, bool set_properties) 253 { 254 if (!lifebook_present) 255 return -1; 256 257 if (desired_serio_phys && 258 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys)) 259 return -1; 260 261 if (set_properties) { 262 psmouse->vendor = "Fujitsu"; 263 psmouse->name = "Lifebook TouchScreen"; 264 } 265 266 return 0; 267 } 268 269 static int lifebook_create_relative_device(struct psmouse *psmouse) 270 { 271 struct input_dev *dev2; 272 struct lifebook_data *priv; 273 int error = -ENOMEM; 274 275 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL); 276 dev2 = input_allocate_device(); 277 if (!priv || !dev2) 278 goto err_out; 279 280 priv->dev2 = dev2; 281 snprintf(priv->phys, sizeof(priv->phys), 282 "%s/input1", psmouse->ps2dev.serio->phys); 283 284 dev2->phys = priv->phys; 285 dev2->name = "PS/2 Touchpad"; 286 dev2->id.bustype = BUS_I8042; 287 dev2->id.vendor = 0x0002; 288 dev2->id.product = PSMOUSE_LIFEBOOK; 289 dev2->id.version = 0x0000; 290 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 291 292 dev2->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); 293 dev2->relbit[BIT_WORD(REL_X)] = BIT_MASK(REL_X) | BIT_MASK(REL_Y); 294 dev2->keybit[BIT_WORD(BTN_LEFT)] = 295 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT); 296 297 error = input_register_device(priv->dev2); 298 if (error) 299 goto err_out; 300 301 psmouse->private = priv; 302 return 0; 303 304 err_out: 305 input_free_device(dev2); 306 kfree(priv); 307 return error; 308 } 309 310 int lifebook_init(struct psmouse *psmouse) 311 { 312 struct input_dev *dev1 = psmouse->dev; 313 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024; 314 315 if (lifebook_absolute_mode(psmouse)) 316 return -1; 317 318 dev1->evbit[0] = BIT_MASK(EV_ABS) | BIT_MASK(EV_KEY); 319 dev1->relbit[0] = 0; 320 dev1->keybit[BIT_WORD(BTN_MOUSE)] = 0; 321 dev1->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); 322 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0); 323 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0); 324 325 if (!desired_serio_phys) { 326 if (lifebook_create_relative_device(psmouse)) { 327 lifebook_relative_mode(psmouse); 328 return -1; 329 } 330 } 331 332 psmouse->protocol_handler = lifebook_process_byte; 333 psmouse->set_resolution = lifebook_set_resolution; 334 psmouse->disconnect = lifebook_disconnect; 335 psmouse->reconnect = lifebook_absolute_mode; 336 337 psmouse->model = lifebook_use_6byte_proto ? 6 : 3; 338 339 /* 340 * Use packet size = 3 even when using 6-byte protocol because 341 * that's what POLL will return on Lifebooks (according to spec). 342 */ 343 psmouse->pktsize = 3; 344 345 return 0; 346 } 347 348