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 #include <linux/slab.h> 20 #include <linux/types.h> 21 22 #include "psmouse.h" 23 #include "lifebook.h" 24 25 struct lifebook_data { 26 struct input_dev *dev2; /* Relative device */ 27 char phys[32]; 28 }; 29 30 static bool lifebook_present; 31 32 static const char *desired_serio_phys; 33 34 static int lifebook_limit_serio3(const struct dmi_system_id *d) 35 { 36 desired_serio_phys = "isa0060/serio3"; 37 return 1; 38 } 39 40 static bool lifebook_use_6byte_proto; 41 42 static int lifebook_set_6byte_proto(const struct dmi_system_id *d) 43 { 44 lifebook_use_6byte_proto = true; 45 return 1; 46 } 47 48 static const struct dmi_system_id lifebook_dmi_table[] __initconst = { 49 { 50 /* FLORA-ie 55mi */ 51 .matches = { 52 DMI_MATCH(DMI_PRODUCT_NAME, "FLORA-ie 55mi"), 53 }, 54 }, 55 { 56 /* LifeBook B */ 57 .matches = { 58 DMI_MATCH(DMI_PRODUCT_NAME, "Lifebook B Series"), 59 }, 60 }, 61 { 62 /* LifeBook B */ 63 .matches = { 64 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B Series"), 65 }, 66 }, 67 { 68 /* Lifebook B */ 69 .matches = { 70 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK B Series"), 71 }, 72 }, 73 { 74 /* Lifebook B-2130 */ 75 .matches = { 76 DMI_MATCH(DMI_BOARD_NAME, "ZEPHYR"), 77 }, 78 }, 79 { 80 /* Lifebook B213x/B2150 */ 81 .matches = { 82 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B2131/B2133/B2150"), 83 }, 84 }, 85 { 86 /* Zephyr */ 87 .matches = { 88 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPHYR"), 89 }, 90 }, 91 { 92 /* Panasonic CF-18 */ 93 .matches = { 94 DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"), 95 }, 96 .callback = lifebook_limit_serio3, 97 }, 98 { 99 /* Panasonic CF-28 */ 100 .matches = { 101 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 102 DMI_MATCH(DMI_PRODUCT_NAME, "CF-28"), 103 }, 104 .callback = lifebook_set_6byte_proto, 105 }, 106 { 107 /* Panasonic CF-29 */ 108 .matches = { 109 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"), 110 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"), 111 }, 112 .callback = lifebook_set_6byte_proto, 113 }, 114 { 115 /* Panasonic CF-72 */ 116 .matches = { 117 DMI_MATCH(DMI_PRODUCT_NAME, "CF-72"), 118 }, 119 .callback = lifebook_set_6byte_proto, 120 }, 121 { 122 /* Lifebook B142 */ 123 .matches = { 124 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook B142"), 125 }, 126 }, 127 { } 128 }; 129 130 void __init lifebook_module_init(void) 131 { 132 lifebook_present = dmi_check_system(lifebook_dmi_table); 133 } 134 135 static psmouse_ret_t lifebook_process_byte(struct psmouse *psmouse) 136 { 137 struct lifebook_data *priv = psmouse->private; 138 struct input_dev *dev1 = psmouse->dev; 139 struct input_dev *dev2 = priv ? priv->dev2 : NULL; 140 u8 *packet = psmouse->packet; 141 bool relative_packet = packet[0] & 0x08; 142 143 if (relative_packet || !lifebook_use_6byte_proto) { 144 if (psmouse->pktcnt != 3) 145 return PSMOUSE_GOOD_DATA; 146 } else { 147 switch (psmouse->pktcnt) { 148 case 1: 149 return (packet[0] & 0xf8) == 0x00 ? 150 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 151 case 2: 152 return PSMOUSE_GOOD_DATA; 153 case 3: 154 return ((packet[2] & 0x30) << 2) == (packet[2] & 0xc0) ? 155 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 156 case 4: 157 return (packet[3] & 0xf8) == 0xc0 ? 158 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 159 case 5: 160 return (packet[4] & 0xc0) == (packet[2] & 0xc0) ? 161 PSMOUSE_GOOD_DATA : PSMOUSE_BAD_DATA; 162 case 6: 163 if (((packet[5] & 0x30) << 2) != (packet[5] & 0xc0)) 164 return PSMOUSE_BAD_DATA; 165 if ((packet[5] & 0xc0) != (packet[1] & 0xc0)) 166 return PSMOUSE_BAD_DATA; 167 break; /* report data */ 168 } 169 } 170 171 if (relative_packet) { 172 if (!dev2) 173 psmouse_warn(psmouse, 174 "got relative packet but no relative device set up\n"); 175 } else { 176 if (lifebook_use_6byte_proto) { 177 input_report_abs(dev1, ABS_X, 178 ((packet[1] & 0x3f) << 6) | (packet[2] & 0x3f)); 179 input_report_abs(dev1, ABS_Y, 180 4096 - (((packet[4] & 0x3f) << 6) | (packet[5] & 0x3f))); 181 } else { 182 input_report_abs(dev1, ABS_X, 183 (packet[1] | ((packet[0] & 0x30) << 4))); 184 input_report_abs(dev1, ABS_Y, 185 1024 - (packet[2] | ((packet[0] & 0xC0) << 2))); 186 } 187 input_report_key(dev1, BTN_TOUCH, packet[0] & 0x04); 188 input_sync(dev1); 189 } 190 191 if (dev2) { 192 if (relative_packet) 193 psmouse_report_standard_motion(dev2, packet); 194 195 psmouse_report_standard_buttons(dev2, packet[0]); 196 input_sync(dev2); 197 } 198 199 return PSMOUSE_FULL_PACKET; 200 } 201 202 static int lifebook_absolute_mode(struct psmouse *psmouse) 203 { 204 struct ps2dev *ps2dev = &psmouse->ps2dev; 205 u8 param; 206 int error; 207 208 error = psmouse_reset(psmouse); 209 if (error) 210 return error; 211 212 /* 213 * Enable absolute output -- ps2_command fails always but if 214 * you leave this call out the touchscreen will never send 215 * absolute coordinates 216 */ 217 param = lifebook_use_6byte_proto ? 0x08 : 0x07; 218 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 219 220 return 0; 221 } 222 223 static void lifebook_relative_mode(struct psmouse *psmouse) 224 { 225 struct ps2dev *ps2dev = &psmouse->ps2dev; 226 u8 param = 0x06; 227 228 ps2_command(ps2dev, ¶m, PSMOUSE_CMD_SETRES); 229 } 230 231 static void lifebook_set_resolution(struct psmouse *psmouse, unsigned int resolution) 232 { 233 static const u8 params[] = { 0, 1, 2, 2, 3 }; 234 u8 p; 235 236 if (resolution == 0 || resolution > 400) 237 resolution = 400; 238 239 p = params[resolution / 100]; 240 ps2_command(&psmouse->ps2dev, &p, PSMOUSE_CMD_SETRES); 241 psmouse->resolution = 50 << p; 242 } 243 244 static void lifebook_disconnect(struct psmouse *psmouse) 245 { 246 struct lifebook_data *priv = psmouse->private; 247 248 psmouse_reset(psmouse); 249 if (priv) { 250 input_unregister_device(priv->dev2); 251 kfree(priv); 252 } 253 psmouse->private = NULL; 254 } 255 256 int lifebook_detect(struct psmouse *psmouse, bool set_properties) 257 { 258 if (!lifebook_present) 259 return -ENXIO; 260 261 if (desired_serio_phys && 262 strcmp(psmouse->ps2dev.serio->phys, desired_serio_phys)) 263 return -ENXIO; 264 265 if (set_properties) { 266 psmouse->vendor = "Fujitsu"; 267 psmouse->name = "Lifebook TouchScreen"; 268 } 269 270 return 0; 271 } 272 273 static int lifebook_create_relative_device(struct psmouse *psmouse) 274 { 275 struct input_dev *dev2; 276 struct lifebook_data *priv; 277 int error = -ENOMEM; 278 279 priv = kzalloc(sizeof(struct lifebook_data), GFP_KERNEL); 280 dev2 = input_allocate_device(); 281 if (!priv || !dev2) 282 goto err_out; 283 284 priv->dev2 = dev2; 285 snprintf(priv->phys, sizeof(priv->phys), 286 "%s/input1", psmouse->ps2dev.serio->phys); 287 288 dev2->phys = priv->phys; 289 dev2->name = "LBPS/2 Fujitsu Lifebook Touchpad"; 290 dev2->id.bustype = BUS_I8042; 291 dev2->id.vendor = 0x0002; 292 dev2->id.product = PSMOUSE_LIFEBOOK; 293 dev2->id.version = 0x0000; 294 dev2->dev.parent = &psmouse->ps2dev.serio->dev; 295 296 input_set_capability(dev2, EV_REL, REL_X); 297 input_set_capability(dev2, EV_REL, REL_Y); 298 input_set_capability(dev2, EV_KEY, BTN_LEFT); 299 input_set_capability(dev2, EV_KEY, BTN_RIGHT); 300 301 error = input_register_device(priv->dev2); 302 if (error) 303 goto err_out; 304 305 psmouse->private = priv; 306 return 0; 307 308 err_out: 309 input_free_device(dev2); 310 kfree(priv); 311 return error; 312 } 313 314 int lifebook_init(struct psmouse *psmouse) 315 { 316 struct input_dev *dev1 = psmouse->dev; 317 int max_coord = lifebook_use_6byte_proto ? 4096 : 1024; 318 int error; 319 320 error = lifebook_absolute_mode(psmouse); 321 if (error) 322 return error; 323 324 /* Clear default capabilities */ 325 bitmap_zero(dev1->evbit, EV_CNT); 326 bitmap_zero(dev1->relbit, REL_CNT); 327 bitmap_zero(dev1->keybit, KEY_CNT); 328 329 input_set_capability(dev1, EV_KEY, BTN_TOUCH); 330 input_set_abs_params(dev1, ABS_X, 0, max_coord, 0, 0); 331 input_set_abs_params(dev1, ABS_Y, 0, max_coord, 0, 0); 332 333 if (!desired_serio_phys) { 334 error = lifebook_create_relative_device(psmouse); 335 if (error) { 336 lifebook_relative_mode(psmouse); 337 return error; 338 } 339 } 340 341 psmouse->protocol_handler = lifebook_process_byte; 342 psmouse->set_resolution = lifebook_set_resolution; 343 psmouse->disconnect = lifebook_disconnect; 344 psmouse->reconnect = lifebook_absolute_mode; 345 346 psmouse->model = lifebook_use_6byte_proto ? 6 : 3; 347 348 /* 349 * Use packet size = 3 even when using 6-byte protocol because 350 * that's what POLL will return on Lifebooks (according to spec). 351 */ 352 psmouse->pktsize = 3; 353 354 return 0; 355 } 356 357