drivers/input/touchscreen/rockchip_gslX680_rk3168.c

   1 /*
   2  * drivers/input/touchscreen/gslX680.c
   3  *
   4  * Copyright (c) 2012 Shanghai Basewin
   5  *      Guan Yuwei<guanyuwei@basewin.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License version 2 as
   9  *  published by the Free Software Foundation.
  10  */
  11
  12
  13 #include <linux/module.h>
  14 #include <linux/delay.h>
  15 #include <linux/earlysuspend.h>
  16 #include <linux/hrtimer.h>
  17 #include <linux/i2c.h>
  18 #include <linux/input.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/io.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/async.h>
  23 #include <mach/gpio.h>
  24 #include <mach/iomux.h>
  25 #include <linux/irq.h>
  26 #include <mach/board.h>
  27 #include <linux/workqueue.h>
  28 #include <linux/proc_fs.h>
  29 #include <linux/input/mt.h>
  30 #include "rockchip_gslX680_rk3168.h"
  31
  32 //#define GSL_DEBUG
  33 //#define GSL_TIMER
  34 #define REPORT_DATA_ANDROID_4_0
  35
  36 //#define HAVE_TOUCH_KEY
  37
  38 #define GSLX680_I2C_NAME        "gslX680"
  39 #define GSLX680_I2C_ADDR        0x40
  40
  41 #define IRQ_PORT                        RK2928_PIN1_PB0
  42 #define WAKE_PORT                       RK2928_PIN0_PD3
  43
  44 #define GSL_DATA_REG            0x80
  45 #define GSL_STATUS_REG          0xe0
  46 #define GSL_PAGE_REG            0xf0
  47
  48 #define PRESS_MAX               255
  49 #define MAX_FINGERS             5
  50 #define MAX_CONTACTS            10
  51 #define DMA_TRANS_LEN           0x20
  52 //#define FILTER_POINT
  53 #ifdef FILTER_POINT
  54 #define FILTER_MAX      6
  55 #endif
  56
  57 #define WRITE_I2C_SPEED 350*1000
  58 #define I2C_SPEED  200*1000
  59
  60 //ÐÝÃßÊ±ÊÇ·ñÐèÒª¹Ø±ÕTPµçÔ´
  61 //Òì³£Ê±ÊÇ·ñÐèÒª¹Ø±ÕµçÔ´
  62 #define CLOSE_TP_POWER   1
  63
  64 #if CLOSE_TP_POWER
  65 static void set_tp_power(bool flag);
  66 #endif
  67
  68 #ifdef HAVE_TOUCH_KEY
  69 static u16 key = 0;
  70 static int key_state_flag = 0;
  71
  72
  73 struct key_data {
  74         u16 key;
  75         u16 x_min;
  76         u16 x_max;
  77         u16 y_min;
  78         u16 y_max;
  79 };
  80
  81 const u16 key_array[]={
  82                                       KEY_BACK,
  83                                       KEY_HOME,
  84                                       KEY_MENU,
  85                                       KEY_SEARCH,
  86                                      };
  87 #define MAX_KEY_NUM     (sizeof(key_array)/sizeof(key_array[0]))
  88
  89 struct key_data gsl_key_data[MAX_KEY_NUM] = {
  90         {KEY_BACK, 2048, 2048, 2048, 2048},
  91         {KEY_HOME, 2048, 2048, 2048, 2048},
  92         {KEY_MENU, 2048, 2048, 2048, 2048},
  93         {KEY_SEARCH, 2048, 2048, 2048, 2048},
  94 };
  95 #endif
  96
  97 struct gsl_ts_data {
  98         u8 x_index;
  99         u8 y_index;
 100         u8 z_index;
 101         u8 id_index;
 102         u8 touch_index;
 103         u8 data_reg;
 104         u8 status_reg;
 105         u8 data_size;
 106         u8 touch_bytes;
 107         u8 update_data;
 108         u8 touch_meta_data;
 109         u8 finger_size;
 110 };
 111
 112 static struct gsl_ts_data devices[] = {
 113         {
 114                 .x_index = 6,
 115                 .y_index = 4,
 116                 .z_index = 5,
 117                 .id_index = 7,
 118                 .data_reg = GSL_DATA_REG,
 119                 .status_reg = GSL_STATUS_REG,
 120                 .update_data = 0x4,
 121                 .touch_bytes = 4,
 122                 .touch_meta_data = 4,
 123                 .finger_size = 70,
 124         },
 125 };
 126
 127 struct gsl_ts {
 128         struct i2c_client *client;
 129         struct input_dev *input;
 130         struct work_struct work;
 131         struct workqueue_struct *wq;
 132         struct gsl_ts_data *dd;
 133         u8 *touch_data;
 134         u8 device_id;
 135 //      uint32_t gpio_irq;
 136         int irq;
 137 #if defined(CONFIG_HAS_EARLYSUSPEND)
 138         struct early_suspend early_suspend;
 139 #endif
 140 #ifdef GSL_TIMER
 141         struct timer_list gsl_timer;
 142 #endif
 143      int                reset_gpio;   //lizhengwei
 144
 145 };
 146
 147 #ifdef GSL_DEBUG
 148 #define print_info(fmt, args...)   \
 149         do{                              \
 150                 printk(fmt, ##args);     \
 151         }while(0)
 152 #else
 153 #define print_info(fmt, args...)
 154 #endif
 155
 156 static   int  ts_global_reset_pin;              //lizhengwei add
 157
 158 static u32 id_sign[MAX_CONTACTS+1] = {0};
 159 static u8 id_state_flag[MAX_CONTACTS+1] = {0};
 160 static u8 id_state_old_flag[MAX_CONTACTS+1] = {0};
 161 static u16 x_old[MAX_CONTACTS+1] = {0};
 162 static u16 y_old[MAX_CONTACTS+1] = {0};
 163 static u16 x_new = 0;
 164 static u16 y_new = 0;
 165 #if 0
 166 static int gslX680_chip_init(void)
 167 {
 168     if (WAKE_PORT > 0) {
 169         gpio_free(WAKE_PORT);
 170         if (gpio_request(WAKE_PORT, "gslx680 wake")) {
 171                 printk("pjf gpio_request(WAKE_PORT) error\n");
 172             goto exit_alloc_gpio_wake_failed;
 173         }
 174     }
 175     gpio_direction_output(WAKE_PORT, 0);
 176     gpio_set_value(WAKE_PORT,GPIO_HIGH);
 177
 178     if (IRQ_PORT > 0) {
 179         gpio_free(IRQ_PORT);
 180         if (gpio_request(IRQ_PORT, "gslx680 irq")) {
 181                 printk("pjf gpio_request(IRQ_PORT) error\n");
 182             goto exit_alloc_gpio_irg_failed;
 183         }
 184     }
 185     gpio_pull_updown(IRQ_PORT, 1);
 186
 187         msleep(20);
 188         return 0;
 189
 190 exit_alloc_gpio_irg_failed:
 191     gpio_free(IRQ_PORT);
 192 exit_alloc_gpio_wake_failed:
 193     gpio_free(WAKE_PORT);
 194         return -EIO;
 195 }
 196 #endif
 197 static int gslX680_shutdown_low(void)
 198 {
 199         gpio_direction_output(ts_global_reset_pin, GPIO_LOW);
 200         gpio_set_value(ts_global_reset_pin,GPIO_LOW);
 201         return 0;
 202 }
 203
 204 static int gslX680_shutdown_high(void)
 205 {
 206         gpio_direction_output(ts_global_reset_pin, GPIO_HIGH);
 207         gpio_set_value(ts_global_reset_pin,GPIO_HIGH);
 208         return 0;
 209 }
 210
 211 static int gslX680_shutdown_realse(void)
 212 {
 213         gpio_direction_input(ts_global_reset_pin);
 214         return 0;
 215 }
 216
 217 static inline u16 join_bytes(u8 a, u8 b)
 218 {
 219         u16 ab = 0;
 220         ab = ab | a;
 221         ab = ab << 8 | b;
 222         return ab;
 223 }
 224
 225 static u32 gsl_read_interface(struct i2c_client *client, u8 reg, u8 *buf, u32 num)
 226 {
 227         struct i2c_msg xfer_msg[2];
 228
 229         xfer_msg[0].addr = client->addr;
 230         xfer_msg[0].len = 1;
 231         xfer_msg[0].flags = client->flags & I2C_M_TEN;
 232         xfer_msg[0].buf = &reg;
 233   xfer_msg[0].scl_rate = I2C_SPEED;
 234
 235         xfer_msg[1].addr = client->addr;
 236         xfer_msg[1].len = num;
 237         xfer_msg[1].flags |= I2C_M_RD;
 238         xfer_msg[1].buf = buf;
 239   xfer_msg[1].scl_rate = I2C_SPEED;
 240
 241         if (reg < 0x80) {
 242                 i2c_transfer(client->adapter, xfer_msg, ARRAY_SIZE(xfer_msg));
 243                 msleep(5);
 244         }
 245
 246         return i2c_transfer(client->adapter, xfer_msg, ARRAY_SIZE(xfer_msg)) == ARRAY_SIZE(xfer_msg) ? 0 : -EFAULT;
 247 }
 248
 249 static u32 gsl_write_interface(struct i2c_client *client, const u8 reg, u8 *buf, u32 num)
 250 {
 251         struct i2c_msg xfer_msg[1];
 252
 253         buf[0] = reg;
 254
 255         xfer_msg[0].addr = client->addr;
 256         xfer_msg[0].len = num + 1;
 257         xfer_msg[0].flags = client->flags & I2C_M_TEN;
 258         xfer_msg[0].buf = buf;
 259         xfer_msg[0].scl_rate = WRITE_I2C_SPEED;
 260
 261         return i2c_transfer(client->adapter, xfer_msg, 1) == 1 ? 0 : -EFAULT;
 262 }
 263
 264 static int gsl_ts_write(struct i2c_client *client, u8 addr, u8 *pdata, int datalen)
 265 {
 266         int ret = 0;
 267         u8 tmp_buf[128];
 268         unsigned int bytelen = 0;
 269         if (datalen > 125)
 270         {
 271                 printk("%s too big datalen = %d!\n", __func__, datalen);
 272                 return -1;
 273         }
 274
 275         tmp_buf[0] = addr;
 276         bytelen++;
 277
 278         if (datalen != 0 && pdata != NULL)
 279         {
 280                 memcpy(&tmp_buf[bytelen], pdata, datalen);
 281                 bytelen += datalen;
 282         }
 283
 284         ret = i2c_master_normal_send(client, tmp_buf, bytelen,I2C_SPEED);
 285         return ret;
 286 }
 287
 288 static int gsl_ts_read(struct i2c_client *client, u8 addr, u8 *pdata, unsigned int datalen)
 289 {
 290         int ret = 0;
 291
 292         if (datalen > 126)
 293         {
 294                 printk("%s too big datalen = %d!\n", __func__, datalen);
 295                 return -1;
 296         }
 297
 298         ret = gsl_ts_write(client, addr, NULL, 0);
 299         if (ret < 0)
 300         {
 301                 printk("%s set data address fail!\n", __func__);
 302                 return ret;
 303         }
 304
 305         return i2c_master_normal_recv(client, pdata, datalen,I2C_SPEED);
 306 }
 307
 308
 309 static __inline__ void fw2buf(u8 *buf, const u32 *fw)
 310 {
 311         u32 *u32_buf = (int *)buf;
 312         *u32_buf = *fw;
 313 }
 314
 315 static void gsl_load_fw(struct i2c_client *client)
 316 {
 317         u8 buf[DMA_TRANS_LEN*4 + 1] = {0};
 318         u8 send_flag = 1;
 319         u8 *cur = buf + 1;
 320         u32 source_line = 0;
 321         u32 source_len;
 322         u8 read_buf[4] = {0};
 323         struct fw_data *ptr_fw;
 324
 325         printk("=============gsl_load_fw start==============\n");
 326
 327 #ifdef GSL1680E_COMPATIBLE
 328         msleep(50);
 329         gsl_ts_read(client, 0xfc, read_buf, 4);
 330         //printk("read 0xfc = %x %x %x %x\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 331
 332         if(read_buf[2] != 0x82 && read_buf[2] != 0x88)
 333         {
 334                 msleep(100);
 335                 gsl_ts_read(client, 0xfc, read_buf, 4);
 336                 //printk("read 0xfc = %x %x %x %x\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 337         }
 338
 339         if(read_buf[2] == 0x82)
 340         {
 341                 ptr_fw = GSL1680E_FW;
 342                 source_len = ARRAY_SIZE(GSL1680E_FW);
 343         }
 344         else
 345 #endif
 346         {
 347                 ptr_fw = GSLX680_FW;
 348                 source_len = ARRAY_SIZE(GSLX680_FW);
 349         }
 350
 351         for (source_line = 0; source_line < source_len; source_line++)
 352         {
 353                 /* init page trans, set the page val */
 354                 if (GSL_PAGE_REG == ptr_fw[source_line].offset)
 355                 {
 356                         fw2buf(cur, &ptr_fw[source_line].val);
 357                         gsl_write_interface(client, GSL_PAGE_REG, buf, 4);
 358                         send_flag = 1;
 359                 }
 360                 else
 361                 {
 362                         if (1 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
 363                                 buf[0] = (u8)ptr_fw[source_line].offset;
 364
 365                         fw2buf(cur, &ptr_fw[source_line].val);
 366                         cur += 4;
 367
 368                         if (0 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
 369                         {
 370                                 gsl_write_interface(client, buf[0], buf, cur - buf - 1);
 371                                 cur = buf + 1;
 372                         }
 373
 374                         send_flag++;
 375                 }
 376         }
 377
 378         printk("=============gsl_load_fw end==============\n");
 379
 380 }
 381
 382
 383 static void test_i2c(struct i2c_client *client)
 384 {
 385         u8 read_buf = 0;
 386         u8 write_buf = 0x12;
 387         int ret;
 388         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
 389         if  (ret  < 0)
 390         {
 391                 pr_info("I2C transfer error!\n");
 392         }
 393         else
 394         {
 395                 pr_info("I read reg 0xf0 is %x\n", read_buf);
 396         }
 397         msleep(10);
 398
 399         ret = gsl_ts_write(client, 0xf0, &write_buf, sizeof(write_buf));
 400         if  (ret  < 0)
 401         {
 402                 pr_info("I2C transfer error!\n");
 403         }
 404         else
 405         {
 406                 pr_info("I write reg 0xf0 0x12\n");
 407         }
 408         msleep(10);
 409
 410         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
 411         if  (ret  <  0 )
 412         {
 413                 pr_info("I2C transfer error!\n");
 414         }
 415         else
 416         {
 417                 pr_info("I read reg 0xf0 is 0x%x\n", read_buf);
 418         }
 419         msleep(10);
 420
 421 }
 422
 423
 424 static void startup_chip(struct i2c_client *client)
 425 {
 426         u8 tmp = 0x00;
 427         u8 buf[4] = {0x00};
 428         buf[3] = 0x01;
 429         buf[2] = 0xfe;
 430         buf[1] = 0x10;
 431         buf[0] = 0x00;
 432         gsl_ts_write(client, 0xf0, buf, sizeof(buf));
 433         buf[3] = 0x00;
 434         buf[2] = 0x00;
 435         buf[1] = 0x00;
 436         buf[0] = 0x0f;
 437         gsl_ts_write(client, 0x04, buf, sizeof(buf));
 438         msleep(20);
 439         gsl_ts_write(client, 0xe0, &tmp, 1);
 440         msleep(10);
 441 }
 442
 443 static void reset_chip(struct i2c_client *client)
 444 {
 445         u8 tmp = 0x88;
 446         u8 buf[4] = {0x00};
 447
 448         gsl_ts_write(client, 0xe0, &tmp, sizeof(tmp));
 449         msleep(20);
 450         tmp = 0x04;
 451         gsl_ts_write(client, 0xe4, &tmp, sizeof(tmp));
 452         msleep(10);
 453         gsl_ts_write(client, 0xbc, buf, sizeof(buf));
 454         msleep(10);
 455 }
 456
 457 static void clr_reg(struct i2c_client *client)
 458 {
 459         u8 write_buf[4] = {0};
 460
 461         write_buf[0] = 0x88;
 462         gsl_ts_write(client, 0xe0, &write_buf[0], 1);
 463         msleep(20);
 464         write_buf[0] = 0x01;
 465         gsl_ts_write(client, 0x80, &write_buf[0], 1);
 466         msleep(5);
 467         write_buf[0] = 0x04;
 468         gsl_ts_write(client, 0xe4, &write_buf[0], 1);
 469         msleep(5);
 470         write_buf[0] = 0x00;
 471         gsl_ts_write(client, 0xe0, &write_buf[0], 1);
 472         msleep(20);
 473 }
 474
 475 static void init_chip(struct i2c_client *client)
 476 {
 477         gslX680_shutdown_low();
 478         msleep(20);
 479         gslX680_shutdown_high();
 480         msleep(20);
 481         clr_reg(client);
 482         reset_chip(client);
 483         gsl_load_fw(client);
 484         startup_chip(client);
 485         reset_chip(client);
 486         startup_chip(client);
 487 }
 488
 489 static void check_mem_data(struct i2c_client *client)
 490 {
 491         u8 read_buf[4]  = {0};
 492
 493         msleep(50);
 494         gsl_ts_read(client,0xb0, read_buf, sizeof(read_buf));
 495         if (read_buf[3] != 0x5a || read_buf[2] != 0x5a || read_buf[1] != 0x5a || read_buf[0] != 0x5a)
 496         {
 497          printk("#########check mem read 0xb0 = %x %x %x %x #########\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 498    #if CLOSE_TP_POWER
 499           set_tp_power(false);
 500           msleep(200);
 501           set_tp_power(true);
 502           msleep(100);
 503    #endif
 504          init_chip(client);
 505         }
 506 }
 507
 508 #ifdef FILTER_POINT
 509 static void filter_point(u16 x, u16 y , u8 id)
 510 {
 511         u16 x_err =0;
 512         u16 y_err =0;
 513         u16 filter_step_x = 0, filter_step_y = 0;
 514
 515         id_sign[id] = id_sign[id] + 1;
 516         if(id_sign[id] == 1)
 517         {
 518                 x_old[id] = x;
 519                 y_old[id] = y;
 520         }
 521
 522         x_err = x > x_old[id] ? (x -x_old[id]) : (x_old[id] - x);
 523         y_err = y > y_old[id] ? (y -y_old[id]) : (y_old[id] - y);
 524
 525         if( (x_err > FILTER_MAX && y_err > FILTER_MAX/3) || (x_err > FILTER_MAX/3 && y_err > FILTER_MAX) )
 526         {
 527                 filter_step_x = x_err;
 528                 filter_step_y = y_err;
 529         }
 530         else
 531         {
 532                 if(x_err > FILTER_MAX)
 533                         filter_step_x = x_err;
 534                 if(y_err> FILTER_MAX)
 535                         filter_step_y = y_err;
 536         }
 537
 538         if(x_err <= 2*FILTER_MAX && y_err <= 2*FILTER_MAX)
 539         {
 540                 filter_step_x >>= 2;
 541                 filter_step_y >>= 2;
 542         }
 543         else if(x_err <= 3*FILTER_MAX && y_err <= 3*FILTER_MAX)
 544         {
 545                 filter_step_x >>= 1;
 546                 filter_step_y >>= 1;
 547         }
 548         else if(x_err <= 4*FILTER_MAX && y_err <= 4*FILTER_MAX)
 549         {
 550                 filter_step_x = filter_step_x*3/4;
 551                 filter_step_y = filter_step_y*3/4;
 552         }
 553         x_new = x > x_old[id] ? (x_old[id] + filter_step_x) : (x_old[id] - filter_step_x);
 554         y_new = y > y_old[id] ? (y_old[id] + filter_step_y) : (y_old[id] - filter_step_y);
 555
 556         x_old[id] = x_new;
 557         y_old[id] = y_new;
 558 }
 559 #else
 560
 561 static void record_point(u16 x, u16 y , u8 id)
 562 {
 563         u16 x_err =0;
 564         u16 y_err =0;
 565
 566         id_sign[id]=id_sign[id]+1;
 567
 568         if(id_sign[id]==1){
 569                 x_old[id]=x;
 570                 y_old[id]=y;
 571         }
 572
 573         x = (x_old[id] + x)/2;
 574         y = (y_old[id] + y)/2;
 575
 576         if(x>x_old[id]){
 577                 x_err=x -x_old[id];
 578         }
 579         else{
 580                 x_err=x_old[id]-x;
 581         }
 582
 583         if(y>y_old[id]){
 584                 y_err=y -y_old[id];
 585         }
 586         else{
 587                 y_err=y_old[id]-y;
 588         }
 589
 590         if( (x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3) ){
 591                 x_new = x;     x_old[id] = x;
 592                 y_new = y;     y_old[id] = y;
 593         }
 594         else{
 595                 if(x_err > 3){
 596                         x_new = x;     x_old[id] = x;
 597                 }
 598                 else
 599                         x_new = x_old[id];
 600                 if(y_err> 3){
 601                         y_new = y;     y_old[id] = y;
 602                 }
 603                 else
 604                         y_new = y_old[id];
 605         }
 606
 607         if(id_sign[id]==1){
 608                 x_new= x_old[id];
 609                 y_new= y_old[id];
 610         }
 611
 612 }
 613 #endif
 614
 615 #ifdef HAVE_TOUCH_KEY
 616 static void report_key(struct gsl_ts *ts, u16 x, u16 y)
 617 {
 618         u16 i = 0;
 619
 620         for(i = 0; i < MAX_KEY_NUM; i++)
 621         {
 622                 if((gsl_key_data[i].x_min < x) && (x < gsl_key_data[i].x_max)&&(gsl_key_data[i].y_min < y) && (y < gsl_key_data[i].y_max))
 623                 {
 624                         key = gsl_key_data[i].key;
 625                         input_report_key(ts->input, key, 1);
 626                         input_sync(ts->input);
 627                         key_state_flag = 1;
 628                         break;
 629                 }
 630         }
 631 }
 632 #endif
 633
 634 static void report_data(struct gsl_ts *ts, u16 x, u16 y, u8 pressure, u8 id)
 635 {
 636         swap(x, y);
 637
 638         print_info("#####id=%d,x=%d,y=%d######\n",id,x,y);
 639
 640         if(x > SCREEN_MAX_X || y > SCREEN_MAX_Y)
 641         {
 642         #ifdef HAVE_TOUCH_KEY
 643                 report_key(ts,x,y);
 644         #endif
 645                 return;
 646         }
 647
 648 #ifdef REPORT_DATA_ANDROID_4_0
 649         input_mt_slot(ts->input, id);
 650         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 651         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 652         input_report_abs(ts->input, ABS_MT_POSITION_X, x);
 653         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 654         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 655 #else
 656         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 657         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 658         input_report_abs(ts->input, ABS_MT_POSITION_X,x);
 659         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 660         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 661         input_mt_sync(ts->input);
 662 #endif
 663 }
 664
 665 static void process_gslX680_data(struct gsl_ts *ts)
 666 {
 667         u8 id, touches;
 668         u16 x, y;
 669         int i = 0;
 670
 671         touches = ts->touch_data[ts->dd->touch_index];
 672         for(i=1;i<=MAX_CONTACTS;i++)
 673         {
 674                 if(touches == 0)
 675                         id_sign[i] = 0;
 676                 id_state_flag[i] = 0;
 677         }
 678         for(i= 0;i < (touches > MAX_FINGERS ? MAX_FINGERS : touches);i ++)
 679         {
 680                 x = join_bytes( ( ts->touch_data[ts->dd->x_index  + 4 * i + 1] & 0xf),
 681                                 ts->touch_data[ts->dd->x_index + 4 * i]);
 682                 y = join_bytes(ts->touch_data[ts->dd->y_index + 4 * i + 1],
 683                                 ts->touch_data[ts->dd->y_index + 4 * i ]);
 684                 id = ts->touch_data[ts->dd->id_index + 4 * i] >> 4;
 685
 686                 if(1 <=id && id <= MAX_CONTACTS)
 687                 {
 688                 #ifdef FILTER_POINT
 689                         filter_point(x, y ,id);
 690                 #else
 691                         record_point(x, y , id);
 692                 #endif
 693                         report_data(ts, x_new, y_new, 50, id);
 694                         id_state_flag[id] = 1;
 695                 }
 696         }
 697         for(i=1;i<=MAX_CONTACTS;i++)
 698         {
 699                 if( (0 == touches) || ((0 != id_state_old_flag[i]) && (0 == id_state_flag[i])) )
 700                 {
 701                 #ifdef REPORT_DATA_ANDROID_4_0
 702                         input_mt_slot(ts->input, i);
 703                         input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
 704                         input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
 705                 #endif
 706                         id_sign[i]=0;
 707                 }
 708                 id_state_old_flag[i] = id_state_flag[i];
 709         }
 710 #ifndef REPORT_DATA_ANDROID_4_0
 711         if(0 == touches)
 712         {
 713                 input_mt_sync(ts->input);
 714         #ifdef HAVE_TOUCH_KEY
 715                 if(key_state_flag)
 716                 {
 717                         input_report_key(ts->input, key, 0);
 718                         input_sync(ts->input);
 719                         key_state_flag = 0;
 720                 }
 721         #endif
 722         }
 723 #endif
 724         input_sync(ts->input);
 725 }
 726
 727
 728 static void gsl_ts_xy_worker(struct work_struct *work)
 729 {
 730         int rc;
 731         u8 read_buf[4] = {0};
 732
 733         struct gsl_ts *ts = container_of(work, struct gsl_ts,work);
 734
 735         print_info("---gsl_ts_xy_worker---\n");
 736         /* read data from DATA_REG */
 737         rc = gsl_ts_read(ts->client, 0x80, ts->touch_data, ts->dd->data_size);
 738         print_info("---touches: %d ---\n",ts->touch_data[0]);
 739
 740         if (rc < 0)
 741         {
 742                 dev_err(&ts->client->dev, "read failed\n");
 743                 goto schedule;
 744         }
 745
 746         if (ts->touch_data[ts->dd->touch_index] == 0xff) {
 747                 goto schedule;
 748         }
 749
 750         rc = gsl_ts_read( ts->client, 0xbc, read_buf, sizeof(read_buf));
 751         if (rc < 0)
 752         {
 753                 dev_err(&ts->client->dev, "read 0xbc failed\n");
 754                 goto schedule;
 755         }
 756         print_info("//////// reg %x : %x %x %x %x\n",0xbc, read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 757
 758         if (read_buf[3] == 0 && read_buf[2] == 0 && read_buf[1] == 0 && read_buf[0] == 0)
 759         {
 760                 process_gslX680_data(ts);
 761         }
 762         else
 763         {
 764                 reset_chip(ts->client);
 765                 startup_chip(ts->client);
 766         }
 767
 768 schedule:
 769         enable_irq(ts->irq);
 770
 771 }
 772
 773 static irqreturn_t gsl_ts_irq(int irq, void *dev_id)
 774 {
 775         struct gsl_ts *ts = dev_id;
 776
 777         print_info("==========GSLX680 Interrupt============\n");
 778
 779         disable_irq_nosync(ts->irq);
 780
 781         if (!work_pending(&ts->work))
 782         {
 783                 queue_work(ts->wq, &ts->work);
 784         }
 785
 786         return IRQ_HANDLED;
 787
 788 }
 789
 790 #ifdef GSL_TIMER
 791 static void gsl_timer_handle(unsigned long data)
 792 {
 793         struct gsl_ts *ts = (struct gsl_ts *)data;
 794
 795 #ifdef GSL_DEBUG
 796         printk("----------------gsl_timer_handle-----------------\n");
 797 #endif
 798
 799         disable_irq_nosync(ts->irq);
 800         check_mem_data(ts->client);
 801         ts->gsl_timer.expires = jiffies + 3 * HZ;
 802         add_timer(&ts->gsl_timer);
 803         enable_irq(ts->irq);
 804
 805 }
 806 #endif
 807
 808 static int gsl_ts_init_ts(struct i2c_client *client, struct gsl_ts *ts)
 809 {
 810         struct input_dev *input_device;
 811 #ifdef CONFIG_MACH_RK_FAC
 812         struct tp_platform_data *pdata = client->dev.platform_data;
 813 #endif
 814         int i, rc = 0;
 815
 816         printk("[GSLX680] Enter %s\n", __func__);
 817
 818
 819         ts->dd = &devices[ts->device_id];
 820
 821         if (ts->device_id == 0) {
 822                 ts->dd->data_size = MAX_FINGERS * ts->dd->touch_bytes + ts->dd->touch_meta_data;
 823                 ts->dd->touch_index = 0;
 824         }
 825
 826         ts->touch_data = kzalloc(ts->dd->data_size, GFP_KERNEL);
 827         if (!ts->touch_data) {
 828                 pr_err("%s: Unable to allocate memory\n", __func__);
 829                 return -ENOMEM;
 830         }
 831
 832
 833         input_device = input_allocate_device();
 834         if (!input_device) {
 835                 rc = -ENOMEM;
 836                 goto error_alloc_dev;
 837         }
 838
 839         ts->input = input_device;
 840         input_device->name = GSLX680_I2C_NAME;
 841         input_device->id.bustype = BUS_I2C;
 842         input_device->dev.parent = &client->dev;
 843         input_set_drvdata(input_device, ts);
 844
 845 #ifdef REPORT_DATA_ANDROID_4_0
 846         __set_bit(EV_ABS, input_device->evbit);
 847         __set_bit(EV_KEY, input_device->evbit);
 848         __set_bit(EV_REP, input_device->evbit);
 849         __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
 850         input_mt_init_slots(input_device, (MAX_CONTACTS+1));
 851 #else
 852         input_set_abs_params(input_device,ABS_MT_TRACKING_ID, 0, (MAX_CONTACTS+1), 0, 0);
 853         set_bit(EV_ABS, input_device->evbit);
 854         set_bit(EV_KEY, input_device->evbit);
 855 #endif
 856
 857 #ifdef HAVE_TOUCH_KEY
 858         input_device->evbit[0] = BIT_MASK(EV_KEY);
 859         for (i = 0; i < MAX_KEY_NUM; i++)
 860                 set_bit(key_array[i], input_device->keybit);
 861 #endif
 862
 863         set_bit(ABS_MT_POSITION_X, input_device->absbit);
 864         set_bit(ABS_MT_POSITION_Y, input_device->absbit);
 865         set_bit(ABS_MT_TOUCH_MAJOR, input_device->absbit);
 866         set_bit(ABS_MT_WIDTH_MAJOR, input_device->absbit);
 867 #ifdef CONFIG_MACH_RK_FAC
 868         input_set_abs_params(input_device,ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
 869         input_set_abs_params(input_device,ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
 870 #else
 871         input_set_abs_params(input_device,ABS_MT_POSITION_X, 0, SCREEN_MAX_X, 0, 0);
 872         input_set_abs_params(input_device,ABS_MT_POSITION_Y, 0, SCREEN_MAX_Y, 0, 0);
 873 #endif
 874         input_set_abs_params(input_device,ABS_MT_TOUCH_MAJOR, 0, PRESS_MAX, 0, 0);
 875         input_set_abs_params(input_device,ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
 876
 877         client->irq = ts->irq; //IRQ_PORT,
 878
 879         ts->wq = create_singlethread_workqueue("kworkqueue_ts");
 880         if (!ts->wq) {
 881                 dev_err(&client->dev, "Could not create workqueue\n");
 882                 goto error_wq_create;
 883         }
 884         flush_workqueue(ts->wq);
 885
 886         INIT_WORK(&ts->work, gsl_ts_xy_worker);
 887
 888         rc = input_register_device(input_device);
 889         if (rc)
 890                 goto error_unreg_device;
 891
 892         return 0;
 893
 894 error_unreg_device:
 895         destroy_workqueue(ts->wq);
 896 error_wq_create:
 897         input_free_device(input_device);
 898 error_alloc_dev:
 899         kfree(ts->touch_data);
 900         return rc;
 901 }
 902
 903 #if CLOSE_TP_POWER
 904 #include <linux/regulator/rk29-pwm-regulator.h>
 905 #include <linux/mfd/tps65910.h>
 906 static void set_tp_power(bool flag)
 907 {
 908          struct regulator *ldo=NULL;
 909          ldo = regulator_get(NULL, "vaux33");
 910
 911          if(ldo==NULL){
 912                  printk("set_tp_power ldo is null\n");
 913                  return;
 914          }
 915          if(flag){
 916                   regulator_set_voltage(ldo, 3300000, 3300000);
 917             regulator_enable(ldo);
 918             regulator_put(ldo);
 919
 920          }else{
 921                   regulator_disable(ldo);
 922         regulator_put(ldo);
 923          }
 924 }
 925 #endif
 926
 927 static int gsl_ts_suspend(struct device *dev)
 928 {
 929         struct gsl_ts *ts = dev_get_drvdata(dev);
 930   printk("I'am in gsl_ts_suspend() start\n");
 931   flush_workqueue(ts->wq);
 932 #ifdef GSL_TIMER
 933         printk( "gsl_ts_suspend () : delete gsl_timer\n");
 934         del_timer(&ts->gsl_timer);
 935 #endif
 936         disable_irq_nosync(ts->irq);
 937         gslX680_shutdown_low();
 938         return 0;
 939 }
 940
 941 static int gsl_ts_resume(struct device *dev)
 942 {
 943         struct gsl_ts *ts = dev_get_drvdata(dev);
 944         int i,rc = 0;
 945   printk("I'am in gsl_ts_resume() start\n");
 946         gslX680_shutdown_high();
 947         msleep(20);
 948         reset_chip(ts->client);
 949         startup_chip(ts->client);
 950         check_mem_data(ts->client);
 951         //add
 952         msleep(100);
 953         reset_chip(ts->client);
 954         startup_chip(ts->client);
 955         msleep(100);
 956         reset_chip(ts->client);
 957         startup_chip(ts->client);
 958 #ifdef GSL_TIMER
 959         printk( "gsl_ts_resume () : add gsl_timer\n");
 960         init_timer(&ts->gsl_timer);
 961         ts->gsl_timer.expires = jiffies + 3 * HZ;
 962         ts->gsl_timer.function = &gsl_timer_handle;
 963         ts->gsl_timer.data = (unsigned long)ts;
 964         add_timer(&ts->gsl_timer);
 965 #endif
 966
 967   for(i=1;i<=MAX_CONTACTS;i++){
 968                 if(0!= id_state_old_flag[i])
 969                 {
 970                 #ifdef REPORT_DATA_ANDROID_4_0
 971                         input_mt_slot(ts->input, i);
 972                         input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
 973                         input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
 974                         input_sync(ts->input);
 975                 #endif
 976                         id_sign[i]=0;
 977                 }
 978                 id_state_old_flag[i] = id_state_flag[i]=0;
 979         }
 980         enable_irq(ts->irq);
 981         return 0;
 982
 983
 984 }
 985
 986 #ifdef CONFIG_HAS_EARLYSUSPEND
 987 static void gsl_ts_early_suspend(struct early_suspend *h)
 988 {
 989         struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
 990         gsl_ts_suspend(&ts->client->dev);
 991 }
 992
 993 static void gsl_ts_late_resume(struct early_suspend *h)
 994 {
 995         struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
 996         gsl_ts_resume(&ts->client->dev);
 997 }
 998 #endif
 999
1000 static int __devinit gsl_ts_probe(struct i2c_client *client,
1001                         const struct i2c_device_id *id)
1002 {
1003         #ifdef CONFIG_MACH_RK_FAC
1004         struct tp_platform_data *pdata = client->dev.platform_data;
1005         #else
1006         struct ts_hw_data *pdata = client->dev.platform_data;
1007         #endif
1008         struct gsl_ts *ts;
1009         int rc;
1010
1011         printk("GSLX680 Enter %s\n", __func__);
1012         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
1013                 dev_err(&client->dev, "I2C functionality not supported\n");
1014                 return -ENODEV;
1015         }
1016
1017         ts = kzalloc(sizeof(*ts), GFP_KERNEL);
1018         if (!ts)
1019                 return -ENOMEM;
1020         printk("==kzalloc success=\n");
1021
1022         ts->client = client;
1023         ts->device_id = id->driver_data;
1024
1025 #ifdef CONFIG_MACH_RK_FAC
1026         ts->reset_gpio = pdata->reset_pin;   //lizhengwei
1027         ts->irq= gpio_to_irq(pdata->irq_pin);        //lizhengwei
1028 #else
1029         ts->reset_gpio = pdata->reset_gpio;   //lizhengwei
1030         ts->irq= gpio_to_irq(pdata->touch_en_gpio);        //lizhengwei
1031
1032 #endif
1033   ts_global_reset_pin=ts->reset_gpio;
1034
1035         i2c_set_clientdata(client, ts);
1036
1037         if (pdata->init_platform_hw)
1038                 pdata->init_platform_hw();
1039
1040         rc = gsl_ts_init_ts(client, ts);
1041         if (rc < 0) {
1042                 dev_err(&client->dev, "GSLX680 init failed\n");
1043                 goto error_mutex_destroy;
1044         }
1045
1046         init_chip(ts->client);
1047         check_mem_data(ts->client);
1048
1049         rc=  request_irq(client->irq, gsl_ts_irq, IRQF_TRIGGER_RISING, client->name, ts);
1050         if (rc < 0) {
1051                 printk( "gsl_probe: request irq failed\n");
1052                 goto error_req_irq_fail;
1053         }
1054
1055   //lizhengwei add
1056   if(1)
1057   {
1058   u8 read_buf = 0;
1059         int ret;
1060         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
1061         if  (ret  < 0)
1062          {
1063                 pr_info("gslx680  I2C transfer error!\n");
1064                 goto error_req_irq_fail;
1065          }
1066   }
1067
1068
1069
1070 #ifdef GSL_TIMER
1071         printk( "gsl_ts_probe () : add gsl_timer\n");
1072
1073         init_timer(&ts->gsl_timer);
1074         ts->gsl_timer.expires = jiffies + 3 * HZ;       //¶¨Ê±3  ÃëÖÓ
1075         ts->gsl_timer.function = &gsl_timer_handle;
1076         ts->gsl_timer.data = (unsigned long)ts;
1077         add_timer(&ts->gsl_timer);
1078 #endif
1079
1080         /* create debug attribute */
1081         //rc = device_create_file(&ts->input->dev, &dev_attr_debug_enable);
1082
1083 #ifdef CONFIG_HAS_EARLYSUSPEND
1084         ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
1085         ts->early_suspend.suspend = gsl_ts_early_suspend;
1086         ts->early_suspend.resume = gsl_ts_late_resume;
1087         register_early_suspend(&ts->early_suspend);
1088 #endif
1089
1090         printk("[GSLX680] End %s\n", __func__);
1091
1092         return 0;
1093
1094 //exit_set_irq_mode:
1095 error_req_irq_fail:
1096     free_irq(ts->irq, ts);
1097
1098 error_mutex_destroy:
1099         input_free_device(ts->input);
1100         kfree(ts);
1101         return rc;
1102 }
1103
1104 static int __devexit gsl_ts_remove(struct i2c_client *client)
1105 {
1106         struct gsl_ts *ts = i2c_get_clientdata(client);
1107         printk("==gsl_ts_remove=\n");
1108
1109 #ifdef CONFIG_HAS_EARLYSUSPEND
1110         unregister_early_suspend(&ts->early_suspend);
1111 #endif
1112
1113         device_init_wakeup(&client->dev, 0);
1114         cancel_work_sync(&ts->work);
1115         free_irq(ts->irq, ts);
1116         destroy_workqueue(ts->wq);
1117         input_unregister_device(ts->input);
1118
1119         //device_remove_file(&ts->input->dev, &dev_attr_debug_enable);
1120
1121         kfree(ts->touch_data);
1122         kfree(ts);
1123
1124         return 0;
1125 }
1126
1127 static const struct i2c_device_id gsl_ts_id[] = {
1128         {GSLX680_I2C_NAME, 0},
1129         {}
1130 };
1131 MODULE_DEVICE_TABLE(i2c, gsl_ts_id);
1132
1133
1134 static struct i2c_driver gsl_ts_driver = {
1135         .driver = {
1136                 .name = GSLX680_I2C_NAME,
1137                 .owner = THIS_MODULE,
1138         },
1139 #ifndef CONFIG_HAS_EARLYSUSPEND
1140         .suspend        = gsl_ts_suspend,
1141         .resume = gsl_ts_resume,
1142 #endif
1143         .probe          = gsl_ts_probe,
1144         .remove         = __devexit_p(gsl_ts_remove),
1145         .id_table       = gsl_ts_id,
1146 };
1147
1148 static int __init gsl_ts_init(void)
1149 {
1150     int ret;
1151         printk("==gsl_ts_init==\n");
1152         ret = i2c_add_driver(&gsl_ts_driver);
1153         printk("ret=%d\n",ret);
1154         return ret;
1155 }
1156 static void __exit gsl_ts_exit(void)
1157 {
1158         printk("==gsl_ts_exit==\n");
1159         i2c_del_driver(&gsl_ts_driver);
1160         return;
1161 }
1162
1163 module_init(gsl_ts_init);
1164 module_exit(gsl_ts_exit);
1165
1166 MODULE_LICENSE("GPL");
1167 MODULE_DESCRIPTION("GSLX680 touchscreen controller driver");
1168 MODULE_AUTHOR("Guan Yuwei, guanyuwei@basewin.com");
1169 MODULE_ALIAS("platform:gsl_ts");