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
  31 #include "rockchip_gslX680_rk3168.h"
  32
  33 //#define GSL_DEBUG
  34 //#define GSL_TIMER
  35 #define REPORT_DATA_ANDROID_4_0
  36
  37 //#define HAVE_TOUCH_KEY
  38
  39 #define GSLX680_I2C_NAME        "gslX680"
  40 #define GSLX680_I2C_ADDR        0x40
  41
  42 #define IRQ_PORT                        RK2928_PIN1_PB0
  43 #define WAKE_PORT                       RK2928_PIN0_PD3
  44
  45 #define GSL_DATA_REG            0x80
  46 #define GSL_STATUS_REG          0xe0
  47 #define GSL_PAGE_REG            0xf0
  48
  49 #define PRESS_MAX               255
  50 #define MAX_FINGERS             5
  51 #define MAX_CONTACTS            10
  52 #define DMA_TRANS_LEN           0x20
  53 //#define FILTER_POINT
  54 #ifdef FILTER_POINT
  55 #define FILTER_MAX      6
  56 #endif
  57
  58 #define I2C_SPEED 200*1000
  59
  60 #ifdef HAVE_TOUCH_KEY
  61 static u16 key = 0;
  62 static int key_state_flag = 0;
  63 struct key_data {
  64         u16 key;
  65         u16 x_min;
  66         u16 x_max;
  67         u16 y_min;
  68         u16 y_max;
  69 };
  70
  71 const u16 key_array[]={
  72                                       KEY_BACK,
  73                                       KEY_HOME,
  74                                       KEY_MENU,
  75                                       KEY_SEARCH,
  76                                      };
  77 #define MAX_KEY_NUM     (sizeof(key_array)/sizeof(key_array[0]))
  78
  79 struct key_data gsl_key_data[MAX_KEY_NUM] = {
  80         {KEY_BACK, 2048, 2048, 2048, 2048},
  81         {KEY_HOME, 2048, 2048, 2048, 2048},
  82         {KEY_MENU, 2048, 2048, 2048, 2048},
  83         {KEY_SEARCH, 2048, 2048, 2048, 2048},
  84 };
  85 #endif
  86
  87 struct gsl_ts_data {
  88         u8 x_index;
  89         u8 y_index;
  90         u8 z_index;
  91         u8 id_index;
  92         u8 touch_index;
  93         u8 data_reg;
  94         u8 status_reg;
  95         u8 data_size;
  96         u8 touch_bytes;
  97         u8 update_data;
  98         u8 touch_meta_data;
  99         u8 finger_size;
 100 };
 101
 102 static struct gsl_ts_data devices[] = {
 103         {
 104                 .x_index = 6,
 105                 .y_index = 4,
 106                 .z_index = 5,
 107                 .id_index = 7,
 108                 .data_reg = GSL_DATA_REG,
 109                 .status_reg = GSL_STATUS_REG,
 110                 .update_data = 0x4,
 111                 .touch_bytes = 4,
 112                 .touch_meta_data = 4,
 113                 .finger_size = 70,
 114         },
 115 };
 116
 117 struct gsl_ts {
 118         struct i2c_client *client;
 119         struct input_dev *input;
 120         struct delayed_work work;
 121         struct workqueue_struct *wq;
 122         struct gsl_ts_data *dd;
 123         u8 *touch_data;
 124         u8 device_id;
 125         u8 prev_touches;
 126         bool is_suspended;
 127         bool int_pending;
 128         struct mutex sus_lock;
 129 //      uint32_t gpio_irq;
 130         int irq;
 131 #if defined(CONFIG_HAS_EARLYSUSPEND)
 132         struct early_suspend early_suspend;
 133 #endif
 134 #ifdef GSL_TIMER
 135         struct timer_list gsl_timer;
 136 #endif
 137      int                reset_gpio;   //lizhengwei
 138
 139 };
 140
 141 #ifdef GSL_DEBUG
 142 #define print_info(fmt, args...)   \
 143         do{                              \
 144                 printk(fmt, ##args);     \
 145         }while(0)
 146 #else
 147 #define print_info(fmt, args...)
 148 #endif
 149
 150 static   int  ts_global_reset_pin;              //lizhengwei add
 151
 152 static u32 id_sign[MAX_CONTACTS+1] = {0};
 153 static u8 id_state_flag[MAX_CONTACTS+1] = {0};
 154 static u8 id_state_old_flag[MAX_CONTACTS+1] = {0};
 155 static u16 x_old[MAX_CONTACTS+1] = {0};
 156 static u16 y_old[MAX_CONTACTS+1] = {0};
 157 static u16 x_new = 0;
 158 static u16 y_new = 0;
 159 #if 0
 160 static int gslX680_chip_init(void)
 161 {
 162     if (WAKE_PORT > 0) {
 163         gpio_free(WAKE_PORT);
 164         if (gpio_request(WAKE_PORT, "gslx680 wake")) {
 165                 printk("pjf gpio_request(WAKE_PORT) error\n");
 166             goto exit_alloc_gpio_wake_failed;
 167         }
 168     }
 169     gpio_direction_output(WAKE_PORT, 0);
 170     gpio_set_value(WAKE_PORT,GPIO_HIGH);
 171
 172     if (IRQ_PORT > 0) {
 173         gpio_free(IRQ_PORT);
 174         if (gpio_request(IRQ_PORT, "gslx680 irq")) {
 175                 printk("pjf gpio_request(IRQ_PORT) error\n");
 176             goto exit_alloc_gpio_irg_failed;
 177         }
 178     }
 179     gpio_pull_updown(IRQ_PORT, 1);
 180
 181         msleep(20);
 182         return 0;
 183
 184 exit_alloc_gpio_irg_failed:
 185     gpio_free(IRQ_PORT);
 186 exit_alloc_gpio_wake_failed:
 187     gpio_free(WAKE_PORT);
 188         return -EIO;
 189 }
 190 #endif
 191 static int gslX680_shutdown_low(void)
 192 {
 193         gpio_direction_output(ts_global_reset_pin, 0);
 194         gpio_set_value(ts_global_reset_pin,GPIO_LOW);
 195         return 0;
 196 }
 197
 198 static int gslX680_shutdown_high(void)
 199 {
 200         gpio_direction_output(ts_global_reset_pin, 0);
 201         gpio_set_value(ts_global_reset_pin,GPIO_HIGH);
 202         return 0;
 203 }
 204
 205 static inline u16 join_bytes(u8 a, u8 b)
 206 {
 207         u16 ab = 0;
 208         ab = ab | a;
 209         ab = ab << 8 | b;
 210         return ab;
 211 }
 212
 213 static u32 gsl_read_interface(struct i2c_client *client, u8 reg, u8 *buf, u32 num)
 214 {
 215         struct i2c_msg xfer_msg[2];
 216
 217         xfer_msg[0].addr = client->addr;
 218         xfer_msg[0].len = 1;
 219         xfer_msg[0].flags = client->flags & I2C_M_TEN;
 220         xfer_msg[0].buf = &reg;
 221
 222         xfer_msg[1].addr = client->addr;
 223         xfer_msg[1].len = num;
 224         xfer_msg[1].flags |= I2C_M_RD;
 225         xfer_msg[1].buf = buf;
 226
 227         if (reg < 0x80) {
 228                 i2c_transfer(client->adapter, xfer_msg, ARRAY_SIZE(xfer_msg));
 229                 msleep(5);
 230         }
 231
 232         return i2c_transfer(client->adapter, xfer_msg, ARRAY_SIZE(xfer_msg)) == ARRAY_SIZE(xfer_msg) ? 0 : -EFAULT;
 233 }
 234
 235 static u32 gsl_write_interface(struct i2c_client *client, const u8 reg, u8 *buf, u32 num)
 236 {
 237         struct i2c_msg xfer_msg[1];
 238
 239         buf[0] = reg;
 240
 241         xfer_msg[0].addr = client->addr;
 242         xfer_msg[0].len = num + 1;
 243         xfer_msg[0].flags = client->flags & I2C_M_TEN;
 244         xfer_msg[0].buf = buf;
 245         xfer_msg[0].scl_rate = I2C_SPEED;
 246
 247         return i2c_transfer(client->adapter, xfer_msg, 1) == 1 ? 0 : -EFAULT;
 248 }
 249
 250 static int gsl_ts_write(struct i2c_client *client, u8 addr, u8 *pdata, int datalen)
 251 {
 252         int ret = 0;
 253         u8 tmp_buf[128];
 254         unsigned int bytelen = 0;
 255         if (datalen > 125)
 256         {
 257                 printk("%s too big datalen = %d!\n", __func__, datalen);
 258                 return -1;
 259         }
 260
 261         tmp_buf[0] = addr;
 262         bytelen++;
 263
 264         if (datalen != 0 && pdata != NULL)
 265         {
 266                 memcpy(&tmp_buf[bytelen], pdata, datalen);
 267                 bytelen += datalen;
 268         }
 269
 270         ret = i2c_master_send(client, tmp_buf, bytelen);
 271         return ret;
 272 }
 273
 274 static int gsl_ts_read(struct i2c_client *client, u8 addr, u8 *pdata, unsigned int datalen)
 275 {
 276         int ret = 0;
 277
 278         if (datalen > 126)
 279         {
 280                 printk("%s too big datalen = %d!\n", __func__, datalen);
 281                 return -1;
 282         }
 283
 284         ret = gsl_ts_write(client, addr, NULL, 0);
 285         if (ret < 0)
 286         {
 287                 printk("%s set data address fail!\n", __func__);
 288                 return ret;
 289         }
 290
 291         return i2c_master_recv(client, pdata, datalen);
 292 }
 293
 294
 295 static __inline__ void fw2buf(u8 *buf, const u32 *fw)
 296 {
 297         u32 *u32_buf = (int *)buf;
 298         *u32_buf = *fw;
 299 }
 300
 301 static void gsl_load_fw(struct i2c_client *client)
 302 {
 303         u8 buf[DMA_TRANS_LEN*4 + 1] = {0};
 304         u8 send_flag = 1;
 305         u8 *cur = buf + 1;
 306         u32 source_line = 0;
 307         u32 source_len;
 308         u8 read_buf[4] = {0};
 309         struct fw_data *ptr_fw;
 310
 311         printk("=============gsl_load_fw start==============\n");
 312
 313 #ifdef GSL1680E_COMPATIBLE
 314         msleep(50);
 315         gsl_ts_read(client, 0xfc, read_buf, 4);
 316         //printk("read 0xfc = %x %x %x %x\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 317
 318         if(read_buf[2] != 0x82 && read_buf[2] != 0x88)
 319         {
 320                 msleep(100);
 321                 gsl_ts_read(client, 0xfc, read_buf, 4);
 322                 //printk("read 0xfc = %x %x %x %x\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 323         }
 324
 325         if(read_buf[2] == 0x82)
 326         {
 327                 ptr_fw = GSL1680E_FW;
 328                 source_len = ARRAY_SIZE(GSL1680E_FW);
 329         }
 330         else
 331 #endif
 332         {
 333                 ptr_fw = GSLX680_FW;
 334                 source_len = ARRAY_SIZE(GSLX680_FW);
 335         }
 336
 337         for (source_line = 0; source_line < source_len; source_line++)
 338         {
 339                 /* init page trans, set the page val */
 340                 if (GSL_PAGE_REG == ptr_fw[source_line].offset)
 341                 {
 342                         fw2buf(cur, &ptr_fw[source_line].val);
 343                         gsl_write_interface(client, GSL_PAGE_REG, buf, 4);
 344                         send_flag = 1;
 345                 }
 346                 else
 347                 {
 348                         if (1 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
 349                                 buf[0] = (u8)ptr_fw[source_line].offset;
 350
 351                         fw2buf(cur, &ptr_fw[source_line].val);
 352                         cur += 4;
 353
 354                         if (0 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
 355                         {
 356                                 gsl_write_interface(client, buf[0], buf, cur - buf - 1);
 357                                 cur = buf + 1;
 358                         }
 359
 360                         send_flag++;
 361                 }
 362         }
 363
 364         printk("=============gsl_load_fw end==============\n");
 365
 366 }
 367
 368
 369 static void test_i2c(struct i2c_client *client)
 370 {
 371         u8 read_buf = 0;
 372         u8 write_buf = 0x12;
 373         int ret;
 374         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
 375         if  (ret  < 0)
 376         {
 377                 pr_info("I2C transfer error!\n");
 378         }
 379         else
 380         {
 381                 pr_info("I read reg 0xf0 is %x\n", read_buf);
 382         }
 383         msleep(10);
 384
 385         ret = gsl_ts_write(client, 0xf0, &write_buf, sizeof(write_buf));
 386         if  (ret  < 0)
 387         {
 388                 pr_info("I2C transfer error!\n");
 389         }
 390         else
 391         {
 392                 pr_info("I write reg 0xf0 0x12\n");
 393         }
 394         msleep(10);
 395
 396         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
 397         if  (ret  <  0 )
 398         {
 399                 pr_info("I2C transfer error!\n");
 400         }
 401         else
 402         {
 403                 pr_info("I read reg 0xf0 is 0x%x\n", read_buf);
 404         }
 405         msleep(10);
 406
 407 }
 408
 409
 410 static void startup_chip(struct i2c_client *client)
 411 {
 412         u8 tmp = 0x00;
 413         gsl_ts_write(client, 0xe0, &tmp, 1);
 414         msleep(10);
 415 }
 416
 417 static void reset_chip(struct i2c_client *client)
 418 {
 419         u8 buf[4] = {0x00};
 420         u8 tmp = 0x88;
 421         gsl_ts_write(client, 0xe0, &tmp, sizeof(tmp));
 422         msleep(10);
 423
 424         tmp = 0x04;
 425         gsl_ts_write(client, 0xe4, &tmp, sizeof(tmp));
 426         msleep(10);
 427
 428         gsl_ts_write(client, 0xbc, buf, sizeof(buf));
 429         msleep(10);
 430 }
 431
 432 static void init_chip(struct i2c_client *client)
 433 {
 434         gslX680_shutdown_low();
 435         msleep(50);
 436         gslX680_shutdown_high();
 437         msleep(30);
 438         reset_chip(client);
 439         gsl_load_fw(client);
 440         startup_chip(client);
 441         reset_chip(client);
 442         startup_chip(client);
 443 }
 444
 445 static void check_mem_data(struct i2c_client *client)
 446 {
 447         char write_buf;
 448         char read_buf[4]  = {0};
 449
 450         msleep(30);
 451         write_buf = 0x00;
 452         gsl_ts_write(client,0xf0, &write_buf, sizeof(write_buf));
 453         gsl_ts_read(client,0x00, read_buf, sizeof(read_buf));
 454         gsl_ts_read(client,0x00, read_buf, sizeof(read_buf));
 455         if (read_buf[3] != 0x1 || read_buf[2] != 0 || read_buf[1] != 0 || read_buf[0] != 0)
 456         {
 457                 printk("!!!!!!!!!!!page: %x offset: %x val: %x %x %x %x\n",0x0, 0x0, read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 458                 init_chip(client);
 459         }
 460 }
 461
 462 #ifdef FILTER_POINT
 463 static void filter_point(u16 x, u16 y , u8 id)
 464 {
 465         u16 x_err =0;
 466         u16 y_err =0;
 467         u16 filter_step_x = 0, filter_step_y = 0;
 468
 469         id_sign[id] = id_sign[id] + 1;
 470         if(id_sign[id] == 1)
 471         {
 472                 x_old[id] = x;
 473                 y_old[id] = y;
 474         }
 475
 476         x_err = x > x_old[id] ? (x -x_old[id]) : (x_old[id] - x);
 477         y_err = y > y_old[id] ? (y -y_old[id]) : (y_old[id] - y);
 478
 479         if( (x_err > FILTER_MAX && y_err > FILTER_MAX/3) || (x_err > FILTER_MAX/3 && y_err > FILTER_MAX) )
 480         {
 481                 filter_step_x = x_err;
 482                 filter_step_y = y_err;
 483         }
 484         else
 485         {
 486                 if(x_err > FILTER_MAX)
 487                         filter_step_x = x_err;
 488                 if(y_err> FILTER_MAX)
 489                         filter_step_y = y_err;
 490         }
 491
 492         if(x_err <= 2*FILTER_MAX && y_err <= 2*FILTER_MAX)
 493         {
 494                 filter_step_x >>= 2;
 495                 filter_step_y >>= 2;
 496         }
 497         else if(x_err <= 3*FILTER_MAX && y_err <= 3*FILTER_MAX)
 498         {
 499                 filter_step_x >>= 1;
 500                 filter_step_y >>= 1;
 501         }
 502
 503         x_new = x > x_old[id] ? (x_old[id] + filter_step_x) : (x_old[id] - filter_step_x);
 504         y_new = y > y_old[id] ? (y_old[id] + filter_step_y) : (y_old[id] - filter_step_y);
 505
 506         x_old[id] = x_new;
 507         y_old[id] = y_new;
 508 }
 509 #else
 510
 511 static void record_point(u16 x, u16 y , u8 id)
 512 {
 513         u16 x_err =0;
 514         u16 y_err =0;
 515
 516         id_sign[id]=id_sign[id]+1;
 517
 518         if(id_sign[id]==1){
 519                 x_old[id]=x;
 520                 y_old[id]=y;
 521         }
 522
 523         x = (x_old[id] + x)/2;
 524         y = (y_old[id] + y)/2;
 525
 526         if(x>x_old[id]){
 527                 x_err=x -x_old[id];
 528         }
 529         else{
 530                 x_err=x_old[id]-x;
 531         }
 532
 533         if(y>y_old[id]){
 534                 y_err=y -y_old[id];
 535         }
 536         else{
 537                 y_err=y_old[id]-y;
 538         }
 539
 540         if( (x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3) ){
 541                 x_new = x;     x_old[id] = x;
 542                 y_new = y;     y_old[id] = y;
 543         }
 544         else{
 545                 if(x_err > 3){
 546                         x_new = x;     x_old[id] = x;
 547                 }
 548                 else
 549                         x_new = x_old[id];
 550                 if(y_err> 3){
 551                         y_new = y;     y_old[id] = y;
 552                 }
 553                 else
 554                         y_new = y_old[id];
 555         }
 556
 557         if(id_sign[id]==1){
 558                 x_new= x_old[id];
 559                 y_new= y_old[id];
 560         }
 561
 562 }
 563 #endif
 564
 565 #ifdef HAVE_TOUCH_KEY
 566 static void report_key(struct gsl_ts *ts, u16 x, u16 y)
 567 {
 568         u16 i = 0;
 569
 570         for(i = 0; i < MAX_KEY_NUM; i++)
 571         {
 572                 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))
 573                 {
 574                         key = gsl_key_data[i].key;
 575                         input_report_key(ts->input, key, 1);
 576                         input_sync(ts->input);
 577                         key_state_flag = 1;
 578                         break;
 579                 }
 580         }
 581 }
 582 #endif
 583
 584 static void report_data(struct gsl_ts *ts, u16 x, u16 y, u8 pressure, u8 id)
 585 {
 586         swap(x, y);
 587
 588         print_info("#####id=%d,x=%d,y=%d######\n",id,x,y);
 589
 590         if(x>=SCREEN_MAX_X||y>=SCREEN_MAX_Y)
 591         {
 592         #ifdef HAVE_TOUCH_KEY
 593                 report_key(ts,x,y);
 594         #endif
 595                 return;
 596         }
 597
 598 #ifdef REPORT_DATA_ANDROID_4_0
 599         input_mt_slot(ts->input, id);
 600         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 601         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 602         input_report_abs(ts->input, ABS_MT_POSITION_X, x);
 603         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 604         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 605 #else
 606         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 607         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 608         input_report_abs(ts->input, ABS_MT_POSITION_X,x);
 609         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 610         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 611         input_mt_sync(ts->input);
 612 #endif
 613 }
 614
 615 static void process_gslX680_data(struct gsl_ts *ts)
 616 {
 617         u8 id, touches;
 618         u16 x, y;
 619         int i = 0;
 620
 621         touches = ts->touch_data[ts->dd->touch_index];
 622         for(i=1;i<=MAX_CONTACTS;i++)
 623         {
 624                 if(touches == 0)
 625                         id_sign[i] = 0;
 626                 id_state_flag[i] = 0;
 627         }
 628         for(i= 0;i < (touches > MAX_FINGERS ? MAX_FINGERS : touches);i ++)
 629         {
 630                 x = join_bytes( ( ts->touch_data[ts->dd->x_index  + 4 * i + 1] & 0xf),
 631                                 ts->touch_data[ts->dd->x_index + 4 * i]);
 632                 y = join_bytes(ts->touch_data[ts->dd->y_index + 4 * i + 1],
 633                                 ts->touch_data[ts->dd->y_index + 4 * i ]);
 634                 id = ts->touch_data[ts->dd->id_index + 4 * i] >> 4;
 635
 636                 if(1 <=id && id <= MAX_CONTACTS)
 637                 {
 638                 #ifdef FILTER_POINT
 639                         filter_point(x, y ,id);
 640                 #else
 641                         record_point(x, y , id);
 642                 #endif
 643                         report_data(ts, x_new, y_new, 50, id);
 644                         id_state_flag[id] = 1;
 645                 }
 646         }
 647         for(i=1;i<=MAX_CONTACTS;i++)
 648         {
 649                 if( (0 == touches) || ((0 != id_state_old_flag[i]) && (0 == id_state_flag[i])) )
 650                 {
 651                 #ifdef REPORT_DATA_ANDROID_4_0
 652                         input_mt_slot(ts->input, i);
 653                         input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
 654                         input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
 655                 #endif
 656                         id_sign[i]=0;
 657                 }
 658                 id_state_old_flag[i] = id_state_flag[i];
 659         }
 660 #ifndef REPORT_DATA_ANDROID_4_0
 661         if(0 == touches)
 662         {
 663                 input_mt_sync(ts->input);
 664         #ifdef HAVE_TOUCH_KEY
 665                 if(key_state_flag)
 666                 {
 667                         input_report_key(ts->input, key, 0);
 668                         input_sync(ts->input);
 669                         key_state_flag = 0;
 670                 }
 671         #endif
 672         }
 673 #endif
 674         input_sync(ts->input);
 675         ts->prev_touches = touches;
 676 }
 677
 678
 679 static void gsl_ts_xy_worker(struct work_struct *work)
 680 {
 681         int rc;
 682         u8 read_buf[4] = {0};
 683
 684         struct gsl_ts *ts = container_of(work, struct gsl_ts,work);
 685
 686         print_info("---gsl_ts_xy_worker---\n");
 687
 688         /* read data from DATA_REG */
 689         rc = gsl_ts_read(ts->client, 0x80, ts->touch_data, ts->dd->data_size);
 690         print_info("---touches: %d ---\n",ts->touch_data[0]);
 691
 692         if (rc < 0)
 693         {
 694                 dev_err(&ts->client->dev, "read failed\n");
 695                 goto schedule;
 696         }
 697
 698         if (ts->touch_data[ts->dd->touch_index] == 0xff) {
 699                 goto schedule;
 700         }
 701
 702         rc = gsl_ts_read( ts->client, 0xbc, read_buf, sizeof(read_buf));
 703         if (rc < 0)
 704         {
 705                 dev_err(&ts->client->dev, "read 0xbc failed\n");
 706                 goto schedule;
 707         }
 708         print_info("//////// reg %x : %x %x %x %x\n",0xbc, read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 709
 710         if (read_buf[3] == 0 && read_buf[2] == 0 && read_buf[1] == 0 && read_buf[0] == 0)
 711         {
 712                 process_gslX680_data(ts);
 713         }
 714         else
 715         {
 716                 reset_chip(ts->client);
 717                 startup_chip(ts->client);
 718         }
 719
 720 schedule:
 721         enable_irq(ts->irq);
 722
 723 }
 724
 725 static irqreturn_t gsl_ts_irq(int irq, void *dev_id)
 726 {
 727         struct gsl_ts *ts = dev_id;
 728
 729         print_info("==========GSLX680 Interrupt============\n");
 730
 731         disable_irq_nosync(ts->irq);
 732
 733 //      if (!work_pending(&ts->work))
 734         {
 735                 queue_delayed_work(ts->wq, &ts->work,msecs_to_jiffies(10));
 736         }
 737
 738         return IRQ_HANDLED;
 739
 740 }
 741
 742 #ifdef GSL_TIMER
 743 static void gsl_timer_handle(unsigned long data)
 744 {
 745         struct gsl_ts *ts = (struct gsl_ts *)data;
 746
 747 #ifdef GSL_DEBUG
 748         printk("----------------gsl_timer_handle-----------------\n");
 749 #endif
 750
 751         disable_irq_nosync(ts->irq);
 752         check_mem_data(ts->client);
 753         ts->gsl_timer.expires = jiffies + 3 * HZ;
 754         add_timer(&ts->gsl_timer);
 755         enable_irq(ts->irq);
 756
 757 }
 758 #endif
 759
 760 static int gsl_ts_init_ts(struct i2c_client *client, struct gsl_ts *ts)
 761 {
 762         struct input_dev *input_device;
 763         int i, rc = 0;
 764
 765         printk("[GSLX680] Enter %s\n", __func__);
 766
 767
 768         ts->dd = &devices[ts->device_id];
 769
 770         if (ts->device_id == 0) {
 771                 ts->dd->data_size = MAX_FINGERS * ts->dd->touch_bytes + ts->dd->touch_meta_data;
 772                 ts->dd->touch_index = 0;
 773         }
 774
 775         ts->touch_data = kzalloc(ts->dd->data_size, GFP_KERNEL);
 776         if (!ts->touch_data) {
 777                 pr_err("%s: Unable to allocate memory\n", __func__);
 778                 return -ENOMEM;
 779         }
 780
 781         ts->prev_touches = 0;
 782
 783         input_device = input_allocate_device();
 784         if (!input_device) {
 785                 rc = -ENOMEM;
 786                 goto error_alloc_dev;
 787         }
 788
 789         ts->input = input_device;
 790         input_device->name = GSLX680_I2C_NAME;
 791         input_device->id.bustype = BUS_I2C;
 792         input_device->dev.parent = &client->dev;
 793         input_set_drvdata(input_device, ts);
 794
 795 #ifdef REPORT_DATA_ANDROID_4_0
 796         __set_bit(EV_ABS, input_device->evbit);
 797         __set_bit(EV_KEY, input_device->evbit);
 798         __set_bit(EV_REP, input_device->evbit);
 799         __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
 800         input_mt_init_slots(input_device, (MAX_CONTACTS+1));
 801 #else
 802         input_set_abs_params(input_device,ABS_MT_TRACKING_ID, 0, (MAX_CONTACTS+1), 0, 0);
 803         set_bit(EV_ABS, input_device->evbit);
 804         set_bit(EV_KEY, input_device->evbit);
 805 #endif
 806
 807 #ifdef HAVE_TOUCH_KEY
 808         input_device->evbit[0] = BIT_MASK(EV_KEY);
 809         //input_device->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
 810         for (i = 0; i < MAX_KEY_NUM; i++)
 811                 set_bit(key_array[i], input_device->keybit);
 812 #endif
 813
 814         set_bit(ABS_MT_POSITION_X, input_device->absbit);
 815         set_bit(ABS_MT_POSITION_Y, input_device->absbit);
 816         set_bit(ABS_MT_TOUCH_MAJOR, input_device->absbit);
 817         set_bit(ABS_MT_WIDTH_MAJOR, input_device->absbit);
 818
 819         input_set_abs_params(input_device,ABS_MT_POSITION_X, 0, SCREEN_MAX_X, 0, 0);
 820         input_set_abs_params(input_device,ABS_MT_POSITION_Y, 0, SCREEN_MAX_Y, 0, 0);
 821         input_set_abs_params(input_device,ABS_MT_TOUCH_MAJOR, 0, PRESS_MAX, 0, 0);
 822         input_set_abs_params(input_device,ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
 823
 824         client->irq = ts->irq; //IRQ_PORT,
 825         //ts->irq = client->irq;
 826
 827         ts->wq = create_singlethread_workqueue("kworkqueue_ts");
 828         if (!ts->wq) {
 829                 dev_err(&client->dev, "Could not create workqueue\n");
 830                 goto error_wq_create;
 831         }
 832         flush_workqueue(ts->wq);
 833
 834         INIT_DELAYED_WORK(&ts->work, gsl_ts_xy_worker);
 835
 836         rc = input_register_device(input_device);
 837         if (rc)
 838                 goto error_unreg_device;
 839
 840         return 0;
 841
 842 error_unreg_device:
 843         destroy_workqueue(ts->wq);
 844 error_wq_create:
 845         input_free_device(input_device);
 846 error_alloc_dev:
 847         kfree(ts->touch_data);
 848         return rc;
 849 }
 850
 851 static int gsl_ts_suspend(struct device *dev)
 852 {
 853         struct gsl_ts *ts = dev_get_drvdata(dev);
 854         int rc = 0;
 855
 856         printk("I'am in gsl_ts_suspend() start\n");
 857
 858 #ifdef GSL_TIMER
 859         printk( "gsl_ts_suspend () : delete gsl_timer\n");
 860
 861         del_timer(&ts->gsl_timer);
 862 #endif
 863         disable_irq_nosync(ts->irq);
 864
 865         gslX680_shutdown_low();
 866
 867         return 0;
 868 }
 869
 870 static int gsl_ts_resume(struct device *dev)
 871 {
 872         struct gsl_ts *ts = dev_get_drvdata(dev);
 873         int rc = 0;
 874
 875         printk("I'am in gsl_ts_resume() start\n");
 876
 877         gslX680_shutdown_low();
 878         msleep(50);
 879         gslX680_shutdown_high();
 880         msleep(30);
 881         reset_chip(ts->client);
 882         startup_chip(ts->client);
 883         check_mem_data(ts->client);
 884
 885 #ifdef GSL_TIMER
 886         printk( "gsl_ts_resume () : add gsl_timer\n");
 887
 888         init_timer(&ts->gsl_timer);
 889         ts->gsl_timer.expires = jiffies + 3 * HZ;
 890         ts->gsl_timer.function = &gsl_timer_handle;
 891         ts->gsl_timer.data = (unsigned long)ts;
 892         add_timer(&ts->gsl_timer);
 893 #endif
 894
 895         enable_irq(ts->irq);
 896
 897         return 0;
 898 }
 899
 900 #ifdef CONFIG_HAS_EARLYSUSPEND
 901 static void gsl_ts_early_suspend(struct early_suspend *h)
 902 {
 903         struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
 904         printk("[GSL1680] Enter %s\n", __func__);
 905         gsl_ts_suspend(&ts->client->dev);
 906 }
 907
 908 static void gsl_ts_late_resume(struct early_suspend *h)
 909 {
 910         struct gsl_ts *ts = container_of(h, struct gsl_ts, early_suspend);
 911         printk("[GSL1680] Enter %s\n", __func__);
 912         gsl_ts_resume(&ts->client->dev);
 913 }
 914 #endif
 915
 916 static int __devinit gsl_ts_probe(struct i2c_client *client,
 917                         const struct i2c_device_id *id)
 918 {
 919         struct ts_hw_data *pdata = client->dev.platform_data;
 920
 921         struct gsl_ts *ts;
 922         int rc;
 923
 924         printk("GSLX680 Enter %s\n", __func__);
 925         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 926                 dev_err(&client->dev, "I2C functionality not supported\n");
 927                 return -ENODEV;
 928         }
 929
 930         ts = kzalloc(sizeof(*ts), GFP_KERNEL);
 931         if (!ts)
 932                 return -ENOMEM;
 933         printk("==kzalloc success=\n");
 934
 935         ts->client = client;
 936         ts->device_id = id->driver_data;
 937
 938         ts->is_suspended = false;
 939         ts->int_pending = false;
 940         ts->reset_gpio = pdata->reset_gpio;   //lizhengwei
 941         ts->irq= gpio_to_irq(pdata->touch_en_gpio);        //lizhengwei
 942         mutex_init(&ts->sus_lock);
 943
 944 ts_global_reset_pin=ts->reset_gpio;
 945
 946         i2c_set_clientdata(client, ts);
 947
 948         if (pdata->init_platform_hw)
 949                 pdata->init_platform_hw();
 950
 951         rc = gsl_ts_init_ts(client, ts);
 952         if (rc < 0) {
 953                 dev_err(&client->dev, "GSLX680 init failed\n");
 954                 goto error_mutex_destroy;
 955         }
 956
 957         rc=  request_irq(client->irq, gsl_ts_irq, IRQF_TRIGGER_RISING, client->name, ts);
 958         if (rc < 0) {
 959                 printk( "gsl_probe: request irq failed\n");
 960                 goto error_req_irq_fail;
 961         }
 962
 963   //lizhengwei add
 964   if(1)
 965   {
 966   u8 read_buf = 0;
 967         int ret;
 968         ret = gsl_ts_read( client, 0xf0, &read_buf, sizeof(read_buf) );
 969         if  (ret  < 0)
 970          {
 971                 pr_info("gslx680  I2C transfer error!\n");
 972                 goto error_req_irq_fail;
 973          }
 974   }
 975
 976
 977         //gslX680_chip_init();
 978         init_chip(ts->client);
 979         check_mem_data(ts->client);
 980
 981
 982 #ifdef GSL_TIMER
 983         printk( "gsl_ts_probe () : add gsl_timer\n");
 984
 985         init_timer(&ts->gsl_timer);
 986         ts->gsl_timer.expires = jiffies + 3 * HZ;       //¶¨Ê±3  ÃëÖÓ
 987         ts->gsl_timer.function = &gsl_timer_handle;
 988         ts->gsl_timer.data = (unsigned long)ts;
 989         add_timer(&ts->gsl_timer);
 990 #endif
 991
 992         /* create debug attribute */
 993         //rc = device_create_file(&ts->input->dev, &dev_attr_debug_enable);
 994
 995 #ifdef CONFIG_HAS_EARLYSUSPEND
 996         ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
 997         ts->early_suspend.suspend = gsl_ts_early_suspend;
 998         ts->early_suspend.resume = gsl_ts_late_resume;
 999         register_early_suspend(&ts->early_suspend);
1000 #endif
1001
1002         printk("[GSLX680] End %s\n", __func__);
1003
1004         return 0;
1005
1006 //exit_set_irq_mode:
1007 error_req_irq_fail:
1008     free_irq(ts->irq, ts);
1009
1010 error_mutex_destroy:
1011         mutex_destroy(&ts->sus_lock);
1012         input_free_device(ts->input);
1013         kfree(ts);
1014         return rc;
1015 }
1016
1017 static int __devexit gsl_ts_remove(struct i2c_client *client)
1018 {
1019         struct gsl_ts *ts = i2c_get_clientdata(client);
1020         printk("==gsl_ts_remove=\n");
1021
1022 #ifdef CONFIG_HAS_EARLYSUSPEND
1023         unregister_early_suspend(&ts->early_suspend);
1024 #endif
1025
1026         device_init_wakeup(&client->dev, 0);
1027         cancel_delayed_work_sync(&ts->work);
1028         free_irq(ts->irq, ts);
1029         destroy_workqueue(ts->wq);
1030         input_unregister_device(ts->input);
1031         mutex_destroy(&ts->sus_lock);
1032
1033         //device_remove_file(&ts->input->dev, &dev_attr_debug_enable);
1034
1035         kfree(ts->touch_data);
1036         kfree(ts);
1037
1038         return 0;
1039 }
1040
1041 static const struct i2c_device_id gsl_ts_id[] = {
1042         {GSLX680_I2C_NAME, 0},
1043         {}
1044 };
1045 MODULE_DEVICE_TABLE(i2c, gsl_ts_id);
1046
1047
1048 static struct i2c_driver gsl_ts_driver = {
1049         .driver = {
1050                 .name = GSLX680_I2C_NAME,
1051                 .owner = THIS_MODULE,
1052         },
1053 #ifndef CONFIG_HAS_EARLYSUSPEND
1054         .suspend        = gsl_ts_suspend,
1055         .resume = gsl_ts_resume,
1056 #endif
1057         .probe          = gsl_ts_probe,
1058         .remove         = __devexit_p(gsl_ts_remove),
1059         .id_table       = gsl_ts_id,
1060 };
1061
1062 static int __init gsl_ts_init(void)
1063 {
1064     int ret;
1065         printk("==gsl_ts_init==\n");
1066         ret = i2c_add_driver(&gsl_ts_driver);
1067         printk("ret=%d\n",ret);
1068         return ret;
1069 }
1070 static void __exit gsl_ts_exit(void)
1071 {
1072         printk("==gsl_ts_exit==\n");
1073         i2c_del_driver(&gsl_ts_driver);
1074         return;
1075 }
1076
1077 module_init(gsl_ts_init);
1078 module_exit(gsl_ts_exit);
1079
1080 MODULE_LICENSE("GPL");
1081 MODULE_DESCRIPTION("GSLX680 touchscreen controller driver");
1082 MODULE_AUTHOR("Guan Yuwei, guanyuwei@basewin.com");
1083 MODULE_ALIAS("platform:gsl_ts");