drivers/input/touchscreen/ili2102_ts.c

   1 #include <linux/module.h>
   2 #include <linux/delay.h>
   3 #include <linux/earlysuspend.h>
   4 #include <linux/hrtimer.h>
   5 #include <linux/i2c.h>
   6 #include <linux/input.h>
   7 #include <linux/interrupt.h>
   8 #include <linux/io.h>
   9 #include <linux/gpio.h>
  10 #include <linux/types.h>
  11 #include <mach/iomux.h>
  12 #include <linux/platform_device.h>
  13 #include <linux/kthread.h>
  14 #include <linux/sched.h>
  15 #include <linux/irq.h>
  16 #include <linux/cdev.h>
  17 #include <asm/uaccess.h>
  18 #include <linux/proc_fs.h>
  19
  20 #include "ili2102_ts.h"
  21
  22 static int  ts_dbg_enable = 0;
  23
  24 #define DBG(msg...) \
  25         ({if(ts_dbg_enable == 1) printk(msg);})
  26
  27 #define TOUCH_NUMBER 2
  28
  29 static volatile int touch_state[TOUCH_NUMBER] = {TOUCH_UP,TOUCH_UP};
  30 static volatile unsigned int g_x[TOUCH_NUMBER] =  {0},g_y[TOUCH_NUMBER] = {0};
  31
  32 struct ili2102_ts_data {
  33         u16             model;                  /* 801. */
  34         bool    swap_xy;                /* swap x and y axes */
  35         u16             x_min, x_max;
  36         u16             y_min, y_max;
  37         uint16_t addr;
  38         int     use_irq;
  39         int     pendown;
  40         int     gpio_pendown;
  41         int     gpio_reset;
  42         int     gpio_reset_active_low;
  43         int             pendown_iomux_mode;
  44         int             resetpin_iomux_mode;
  45         char    pendown_iomux_name[IOMUX_NAME_SIZE];
  46         char    resetpin_iomux_name[IOMUX_NAME_SIZE];
  47         char    phys[32];
  48         char    name[32];
  49         int             valid_i2c_register;
  50         struct  i2c_client *client;
  51         struct  input_dev *input_dev;
  52         struct  hrtimer timer;
  53         struct  delayed_work    work;
  54         struct  workqueue_struct *ts_wq;
  55         struct  early_suspend early_suspend;
  56 };
  57
  58 #ifdef CONFIG_HAS_EARLYSUSPEND
  59 static void ili2102_ts_early_suspend(struct early_suspend *h);
  60 static void ili2102_ts_late_resume(struct early_suspend *h);
  61 #endif
  62
  63 #define ILI2102_TS_APK_SUPPORT 1
  64
  65 #if ILI2102_TS_APK_SUPPORT
  66 // device data
  67 struct dev_data {
  68         // device number
  69         dev_t devno;
  70         // character device
  71         struct cdev cdev;
  72         // class device
  73         struct class *class;
  74 };
  75
  76 // global variables
  77 static struct ili2102_ts_data *g_ts;
  78 static struct dev_data g_dev;
  79
  80 // definitions
  81 #define ILITEK_I2C_RETRY_COUNT                  3
  82 #define ILITEK_FILE_DRIVER_NAME                 "ilitek_file"
  83 #define ILITEK_DEBUG_LEVEL                      KERN_INFO
  84 #define ILITEK_ERROR_LEVEL                      KERN_ALERT
  85
  86 // i2c command for ilitek touch screen
  87 #define ILITEK_TP_CMD_READ_DATA                 0x10
  88 #define ILITEK_TP_CMD_READ_SUB_DATA             0x11
  89 #define ILITEK_TP_CMD_GET_RESOLUTION            0x20
  90 #define ILITEK_TP_CMD_GET_FIRMWARE_VERSION      0x40
  91 #define ILITEK_TP_CMD_GET_PROTOCOL_VERSION      0x42
  92 #define ILITEK_TP_CMD_CALIBRATION               0xCC
  93 #define ILITEK_TP_CMD_ERASE_BACKGROUND          0xCE
  94
  95 // define the application command
  96 #define ILITEK_IOCTL_BASE                       100
  97 #define ILITEK_IOCTL_I2C_WRITE_DATA             _IOWR(ILITEK_IOCTL_BASE, 0, unsigned char*)
  98 #define ILITEK_IOCTL_I2C_WRITE_LENGTH           _IOWR(ILITEK_IOCTL_BASE, 1, int)
  99 #define ILITEK_IOCTL_I2C_READ_DATA              _IOWR(ILITEK_IOCTL_BASE, 2, unsigned char*)
 100 #define ILITEK_IOCTL_I2C_READ_LENGTH            _IOWR(ILITEK_IOCTL_BASE, 3, int)
 101 #define ILITEK_IOCTL_USB_WRITE_DATA             _IOWR(ILITEK_IOCTL_BASE, 4, unsigned char*)
 102 #define ILITEK_IOCTL_USB_WRITE_LENGTH           _IOWR(ILITEK_IOCTL_BASE, 5, int)
 103 #define ILITEK_IOCTL_USB_READ_DATA              _IOWR(ILITEK_IOCTL_BASE, 6, unsigned char*)
 104 #define ILITEK_IOCTL_USB_READ_LENGTH            _IOWR(ILITEK_IOCTL_BASE, 7, int)
 105 #define ILITEK_IOCTL_I2C_UPDATE_RESOLUTION      _IOWR(ILITEK_IOCTL_BASE, 8, int)
 106 #define ILITEK_IOCTL_USB_UPDATE_RESOLUTION      _IOWR(ILITEK_IOCTL_BASE, 9, int)
 107 #define ILITEK_IOCTL_I2C_SET_ADDRESS            _IOWR(ILITEK_IOCTL_BASE, 10, int)
 108 #define ILITEK_IOCTL_I2C_UPDATE                 _IOWR(ILITEK_IOCTL_BASE, 11, int)
 109 #define ILITEK_IOCTL_STOP_READ_DATA             _IOWR(ILITEK_IOCTL_BASE, 12, int)
 110 #define ILITEK_IOCTL_START_READ_DATA            _IOWR(ILITEK_IOCTL_BASE, 13, int)
 111
 112
 113 static ssize_t ili2102_proc_write(struct file *file, const char __user *buffer,
 114                            unsigned long count, void *data)
 115 {
 116         char c;
 117         int rc;
 118
 119         rc = get_user(c, buffer);
 120         if (rc)
 121                 return rc;
 122
 123         if (c == '1')
 124                 ts_dbg_enable = 1;
 125         else if (c == '0')
 126                 ts_dbg_enable = 0;
 127
 128         return count;
 129 }
 130
 131 static const struct file_operations ili2102_proc_fops = {
 132         .owner          = THIS_MODULE,
 133         .write          = ili2102_proc_write,
 134 };
 135
 136 static int ilitek_file_open(struct inode *inode, struct file *filp)
 137 {
 138         return 0;
 139 }
 140
 141 static ssize_t ilitek_file_write(struct file *filp, const char *buf, size_t count, loff_t *f_pos)
 142 {
 143         int ret;
 144         unsigned char buffer[128]={0};
 145         struct i2c_msg msg[2];
 146
 147         msg[0].addr = g_ts->client->addr;
 148         msg[0].flags = g_ts->client->flags;
 149         msg[0].len = count;
 150         msg[0].buf = buffer;
 151         msg[0].scl_rate = 400*1000;
 152         msg[0].udelay = 80;
 153
 154         DBG("%s:count=0x%x\n",__FUNCTION__,count);
 155
 156         // before sending data to touch device, we need to check whether the device is working or not
 157         if(g_ts->valid_i2c_register == 0){
 158                 printk(ILITEK_ERROR_LEVEL "%s, i2c device driver doesn't be registered\n", __func__);
 159                 return -1;
 160         }
 161
 162         // check the buffer size whether it exceeds the local buffer size or not
 163         if(count > 128){
 164                 printk(ILITEK_ERROR_LEVEL "%s, buffer exceed 128 bytes\n", __func__);
 165                 return -1;
 166         }
 167
 168         // copy data from user space
 169         ret = copy_from_user(buffer, buf, count-1);
 170         if(ret < 0){
 171                 printk(ILITEK_ERROR_LEVEL "%s, copy data from user space, failed", __func__);
 172                 return -1;
 173         }
 174
 175         // parsing command
 176         if(strcmp(buffer, "calibrate") == 0){
 177                 buffer[0] = ILITEK_TP_CMD_ERASE_BACKGROUND;
 178         msg[0].len = 1;
 179         ret = i2c_transfer(g_ts->client->adapter, msg, 1);
 180         if(ret < 0){
 181                 printk(ILITEK_DEBUG_LEVEL "%s, i2c erase background, failed\n", __func__);
 182         }
 183         else{
 184                 printk(ILITEK_DEBUG_LEVEL "%s, i2c erase background, success\n", __func__);
 185         }
 186
 187                 buffer[0] = ILITEK_TP_CMD_CALIBRATION;
 188         msg[0].len = 1;
 189         msleep(2000);
 190         ret = i2c_transfer(g_ts->client->adapter, msg, 1);
 191                 if(ret < 0){
 192         printk(ILITEK_DEBUG_LEVEL "%s, i2c calibration, failed\n", __func__);
 193         }
 194                 else{
 195         printk(ILITEK_DEBUG_LEVEL "%s, i2c calibration, success\n", __func__);
 196                 }
 197                 msleep(1000);
 198                 return count;
 199         }
 200         return -1;
 201 }
 202
 203
 204 static int ilitek_file_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
 205 {
 206         static unsigned char buffer[64]={0};
 207         static int len=0;
 208         int ret;
 209         struct i2c_msg msg[2];
 210
 211         msg[0].addr = g_ts->client->addr;
 212         msg[0].flags = g_ts->client->flags;
 213         msg[0].len = len;
 214         msg[0].buf = buffer;
 215         msg[0].scl_rate = 400*1000;
 216         msg[0].udelay = 80;
 217
 218         // parsing ioctl command
 219         switch(cmd){
 220         case ILITEK_IOCTL_I2C_WRITE_DATA:
 221                 ret = copy_from_user(buffer, (unsigned char*)arg, len);
 222                 if(ret < 0){
 223         printk(ILITEK_ERROR_LEVEL "%s, copy data from user space, failed\n", __func__);
 224         return -1;
 225         }
 226                 ret = i2c_transfer(g_ts->client->adapter, msg, 1);
 227                 if(ret < 0){
 228                 printk(ILITEK_ERROR_LEVEL "%s, i2c write, failed\n", __func__);
 229                 return -1;
 230                 }
 231                 break;
 232
 233         case ILITEK_IOCTL_I2C_READ_DATA:
 234                 msg[0].addr = g_ts->client->addr;
 235                 msg[0].flags = g_ts->client->flags | I2C_M_RD;
 236                 msg[0].len = len;
 237                 msg[0].buf = buffer;
 238                 msg[0].scl_rate = 400*1000;
 239                 msg[0].udelay = 80;
 240                 ret = i2c_transfer(g_ts->client->adapter, msg, 1);
 241                 if(ret < 0){
 242         printk(ILITEK_ERROR_LEVEL "%s, i2c read, failed\n", __func__);
 243                 return -1;
 244         }
 245                 ret = copy_to_user((unsigned char*)arg, buffer, len);
 246                 if(ret < 0){
 247         printk(ILITEK_ERROR_LEVEL "%s, copy data to user space, failed\n", __func__);
 248         return -1;
 249         }
 250                 break;
 251         case ILITEK_IOCTL_I2C_WRITE_LENGTH:
 252         case ILITEK_IOCTL_I2C_READ_LENGTH:
 253                 len = arg;
 254                 break;
 255         case ILITEK_IOCTL_I2C_UPDATE_RESOLUTION:
 256         case ILITEK_IOCTL_I2C_SET_ADDRESS:
 257         case ILITEK_IOCTL_I2C_UPDATE:
 258                 break;
 259         case ILITEK_IOCTL_START_READ_DATA:
 260                 //g_ts.stop_polling = 0;
 261                 break;
 262         case ILITEK_IOCTL_STOP_READ_DATA:
 263                 //g_ts.stop_polling = 1;
 264                 break;
 265         default:
 266                 return -1;
 267         }
 268
 269         DBG("%s:cmd=0x%x\n",__FUNCTION__,cmd);
 270
 271         return 0;
 272 }
 273
 274
 275 static ssize_t ilitek_file_read(struct file *filp, char *buf, size_t count, loff_t *f_pos)
 276 {
 277         return 0;
 278 }
 279
 280
 281 static int ilitek_file_close(struct inode *inode, struct file *filp)
 282 {
 283         return 0;
 284 }
 285
 286
 287 // declare file operations
 288 struct file_operations ilitek_fops = {
 289         .ioctl = ilitek_file_ioctl,
 290         .read = ilitek_file_read,
 291         .write = ilitek_file_write,
 292         .open = ilitek_file_open,
 293         .release = ilitek_file_close,
 294 };
 295
 296 #endif
 297 static int verify_coord(struct ili2102_ts_data *ts,unsigned int *x,unsigned int *y)
 298 {
 299
 300         //DBG("%s:(%d/%d)\n",__FUNCTION__,*x, *y);
 301         #ifndef CONFIG_MACH_RK29_TD8801_V2
 302         if((*x< ts->x_min) || (*x > ts->x_max))
 303                 return -1;
 304
 305         if((*y< ts->y_min) || (*y > ts->y_max))
 306                 return -1;
 307     #endif
 308
 309         /*android do not support min and max value*/
 310         if(*x == ts->x_min)
 311                 *x = ts->x_min + 1;
 312         if(*y == ts->y_min)
 313                 *y = ts->y_min + 1;
 314         if(*x == ts->x_max)
 315                 *x = ts->x_max - 1;
 316         if(*y == ts->y_max)
 317                 *y = ts->y_max - 1;
 318
 319
 320         return 0;
 321 }
 322 static int ili2102_init_panel(struct ili2102_ts_data *ts)
 323 {
 324         gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
 325         mdelay(1);
 326         gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
 327         return 0;
 328 }
 329
 330 static void ili2102_ts_work_func(struct work_struct *work)
 331 {
 332         int i,ret,num=1;
 333         int syn_flag = 0;
 334         unsigned int x, y;
 335         struct i2c_msg msg[2];
 336         uint8_t start_reg;
 337         uint8_t buf[9];//uint32_t buf[4];
 338         struct ili2102_ts_data *ts = container_of(work, struct ili2102_ts_data, work);
 339
 340         DBG("ili2102_ts_work_func\n");
 341
 342         /*Touch Information Report*/
 343         start_reg = 0x10;
 344
 345         msg[0].addr = ts->client->addr;
 346         msg[0].flags = ts->client->flags;
 347         msg[0].len = 1;
 348         msg[0].buf = &start_reg;
 349         msg[0].scl_rate = 200*1000;
 350         msg[0].udelay = 200;
 351
 352         msg[1].addr = ts->client->addr;
 353         msg[1].flags = ts->client->flags | I2C_M_RD;
 354         msg[1].len = 9;
 355         msg[1].buf = buf;
 356         msg[1].scl_rate = 200*1000;
 357         msg[1].udelay = 0;
 358
 359         ret = i2c_transfer(ts->client->adapter, msg, 2);
 360         if (ret < 0)
 361         {
 362                 printk("%s:i2c_transfer fail, ret=%d\n",__FUNCTION__,ret);
 363                 goto out;
 364         }
 365         if(buf[0]&0x02 == 0x02)
 366                 num = 2;
 367         else
 368                 num = 1;
 369
 370         for(i=0; i<num; i++)
 371         {
 372
 373                 if(!((buf[0]>>i)&0x01))
 374                 {
 375                         if (touch_state[i] == TOUCH_DOWN)
 376                         {
 377                                 DBG("ili2102_ts_work_func:buf[%d]=%d\n",i,buf[i]);
 378                                 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); //Finger Size
 379                                 input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0); //Touch Size
 380                                 input_mt_sync(ts->input_dev);
 381                                 syn_flag = 1;
 382                                 touch_state[i] = TOUCH_UP;
 383                                 DBG("i=%d,touch_up \n",i);
 384                         }
 385
 386                 }
 387                 else
 388                 {
 389                         if((buf[0]>>i)&0x01)
 390                         {
 391                                 x = buf[1+(i<<2)] | (buf[2+(i<<2)] << 8);
 392                                 y = buf[3+(i<<2)] | (buf[4+(i<<2)] << 8);
 393
 394                                 if (ts->swap_xy)
 395                                 swap(x, y);
 396
 397                                 if (verify_coord(ts,&x,&y))//goto out;
 398                                 {
 399                                         printk("err:x=%d,y=%d\n",x,y);
 400                                         x = g_x[i];
 401                                         y = g_y[i];
 402                                 }
 403                                 #ifdef CONFIG_MACH_RK29_TD8801_V2
 404                                 if( y >=80 ) y-=80;
 405                                 if( x >= 50 ) x-=50;
 406                                 #endif
 407                                 g_x[i] = x;
 408                                 g_y[i] = y;
 409                                 input_event(ts->input_dev, EV_ABS, ABS_MT_TRACKING_ID, i);
 410                         input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 1); //Finger Size
 411                         input_report_abs(ts->input_dev, ABS_MT_POSITION_X, x);
 412                         input_report_abs(ts->input_dev, ABS_MT_POSITION_Y, y);
 413                         input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 5); //Touch Size
 414                         input_mt_sync(ts->input_dev);
 415                                 syn_flag = 1;
 416                                 touch_state[i] = TOUCH_DOWN;
 417                                  ts->pendown = 1;
 418                                 DBG("touch_down i=%d X = %d, Y = %d\n",i, x, y);
 419                         }
 420
 421                 }
 422         }
 423
 424         if(syn_flag)
 425         input_sync(ts->input_dev);
 426 out:
 427 #if 0
 428         if(ts->pendown)
 429         {
 430                 schedule_delayed_work(&ts->work, msecs_to_jiffies(12));
 431                 ts->pendown = 0;
 432         }
 433         else
 434         {
 435                 if (ts->use_irq)
 436                 enable_irq(ts->client->irq);
 437         }
 438 #else
 439         enable_irq(ts->client->irq);//intterupt pin will be high after i2c read so could enable irq at once
 440 #endif
 441         DBG("pin=%d,level=%d,irq=%d\n\n",irq_to_gpio(ts->client->irq),gpio_get_value(irq_to_gpio(ts->client->irq)),ts->client->irq);
 442
 443 }
 444
 445 static irqreturn_t ili2102_ts_irq_handler(int irq, void *dev_id)
 446 {
 447         struct ili2102_ts_data *ts = dev_id;
 448         DBG("ili2102_ts_irq_handler=%d,%d\n",ts->client->irq,ts->use_irq);
 449
 450         disable_irq_nosync(ts->client->irq); //disable_irq(ts->client->irq);
 451         queue_delayed_work(ts->ts_wq, &ts->work, 0);
 452         return IRQ_HANDLED;
 453 }
 454
 455 static int __devinit setup_resetPin(struct i2c_client *client, struct ili2102_ts_data *ts)
 456 {
 457         struct ili2102_platform_data    *pdata = client->dev.platform_data;
 458         int err;
 459
 460         ts->gpio_reset = pdata->gpio_reset;
 461         strcpy(ts->resetpin_iomux_name,pdata->resetpin_iomux_name);
 462         ts->resetpin_iomux_mode = pdata->resetpin_iomux_mode;
 463         ts->gpio_reset_active_low = pdata->gpio_reset_active_low;
 464
 465         DBG("%s=%d,%s,%d,%d\n",__FUNCTION__,ts->gpio_reset,ts->resetpin_iomux_name,ts->resetpin_iomux_mode,ts->gpio_reset_active_low);
 466
 467         if (!gpio_is_valid(ts->gpio_reset)) {
 468                 dev_err(&client->dev, "no gpio_reset?\n");
 469                 return -EINVAL;
 470         }
 471
 472         rk29_mux_api_set(ts->resetpin_iomux_name,ts->resetpin_iomux_mode);
 473         err = gpio_request(ts->gpio_reset, "ili2102_resetPin");
 474         if (err) {
 475                 dev_err(&client->dev, "failed to request resetPin GPIO%d\n",
 476                                 ts->gpio_reset);
 477                 return err;
 478         }
 479
 480         //gpio_direction_output(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
 481
 482         err = gpio_direction_output(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_LOW:GPIO_HIGH);
 483         if (err) {
 484                 dev_err(&client->dev, "failed to set resetPin GPIO%d\n",
 485                                 ts->gpio_reset);
 486                 gpio_free(ts->gpio_reset);
 487                 return err;
 488         }
 489
 490         mdelay(5);
 491
 492         gpio_set_value(ts->gpio_reset, ts->gpio_reset_active_low? GPIO_HIGH:GPIO_LOW);
 493
 494         mdelay(200);
 495
 496         return 0;
 497 }
 498
 499 static int __devinit setup_pendown(struct i2c_client *client, struct ili2102_ts_data *ts)
 500 {
 501         int err;
 502         struct ili2102_platform_data    *pdata = client->dev.platform_data;
 503
 504         if (!client->irq) {
 505                 dev_dbg(&client->dev, "no IRQ?\n");
 506                 return -ENODEV;
 507         }
 508
 509         if (!gpio_is_valid(pdata->gpio_pendown)) {
 510                 dev_err(&client->dev, "no gpio_pendown?\n");
 511                 return -EINVAL;
 512         }
 513
 514         ts->gpio_pendown = pdata->gpio_pendown;
 515         strcpy(ts->pendown_iomux_name,pdata->pendown_iomux_name);
 516         ts->pendown_iomux_mode = pdata->pendown_iomux_mode;
 517
 518         DBG("%s=%d,%s,%d\n",__FUNCTION__,ts->gpio_pendown,ts->pendown_iomux_name,ts->pendown_iomux_mode);
 519
 520         if (!gpio_is_valid(ts->gpio_pendown)) {
 521                 dev_err(&client->dev, "no gpio_pendown?\n");
 522                 return -EINVAL;
 523         }
 524
 525         rk29_mux_api_set(ts->pendown_iomux_name,ts->pendown_iomux_mode);
 526         err = gpio_request(ts->gpio_pendown, "ili2102_pendown");
 527         if (err) {
 528                 dev_err(&client->dev, "failed to request pendown GPIO%d\n",
 529                                 ts->gpio_pendown);
 530                 return err;
 531         }
 532
 533         err = gpio_pull_updown(ts->gpio_pendown, PullDisable);
 534         if (err) {
 535                 dev_err(&client->dev, "failed to pullup pendown GPIO%d\n",
 536                                 ts->gpio_pendown);
 537                 gpio_free(ts->gpio_pendown);
 538                 return err;
 539         }
 540         return 0;
 541 }
 542
 543 static int ili2102_chip_Init(struct i2c_client *client)
 544 {
 545         int ret = 0;
 546         uint8_t start_reg;
 547         uint8_t buf[6];
 548         struct i2c_msg msg[2];
 549
 550         /* get panel information:6bytes */
 551         start_reg = 0x20;
 552         msg[0].addr =client->addr;
 553         msg[0].flags = client->flags;
 554         msg[0].len = 1;
 555         msg[0].buf = &start_reg;
 556         msg[0].scl_rate = 400*1000;
 557         msg[0].udelay = 200;
 558
 559         ret = i2c_transfer(client->adapter, msg, 1);
 560         if (ret < 0) {
 561         printk("%s:err\n",__FUNCTION__);
 562         }
 563
 564         mdelay(5);//tp need delay
 565
 566         msg[0].addr = client->addr;
 567         msg[0].flags = client->flags |I2C_M_RD;
 568         msg[0].len = 6;
 569         msg[0].buf = (u8*)&buf[0];
 570         msg[0].scl_rate = 400*1000;
 571         msg[0].udelay = 200;
 572
 573         ret = i2c_transfer(client->adapter, msg, 1);
 574         if (ret < 0) {
 575         printk("%s:err\n",__FUNCTION__);
 576         }
 577
 578         printk("%s:max_x=%d,max_y=%d,b[4]=0x%x,b[5]=0x%x\n",
 579                 __FUNCTION__,buf[0]|(buf[1]<<8),buf[2]|(buf[3]<<8),buf[4],buf[5]);
 580
 581         /*get firmware version:3bytes */
 582         start_reg = 0x40;
 583         msg[0].addr =client->addr;
 584         msg[0].flags = client->flags;
 585         msg[0].len = 1;
 586         msg[0].buf = &start_reg;
 587         msg[0].scl_rate = 400*1000;
 588         msg[0].udelay = 200;
 589
 590         ret = i2c_transfer(client->adapter, msg, 1);
 591         if (ret < 0) {
 592         printk("%s:err\n",__FUNCTION__);
 593         }
 594
 595         mdelay(5);//tp need delay
 596
 597         msg[0].addr = client->addr;
 598         msg[0].flags = client->flags | I2C_M_RD;
 599         msg[0].len = 3;
 600         msg[0].buf = (u8*)&buf[0];
 601         msg[0].scl_rate =400*1000;
 602         msg[0].udelay = 200;
 603
 604         ret = i2c_transfer(client->adapter, msg, 1);
 605         if (ret < 0) {
 606         printk("%s:err\n",__FUNCTION__);
 607         }
 608
 609         printk("%s:Ver %d.%d.%d\n",__FUNCTION__,buf[0],buf[1],buf[2]);
 610
 611         return ret;
 612
 613 }
 614
 615 static int ili2102_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
 616 {
 617         struct ili2102_ts_data *ts;
 618         struct ili2102_platform_data    *pdata = client->dev.platform_data;
 619         int ret = 0;
 620
 621         printk("ili2102 TS probe\n");
 622
 623         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 624             printk(KERN_ERR "ili2102_ts_probe: need I2C_FUNC_I2C\n");
 625             ret = -ENODEV;
 626             goto err_check_functionality_failed;
 627         }
 628
 629         ts = kzalloc(sizeof(*ts), GFP_KERNEL);
 630         if (ts == NULL) {
 631             ret = -ENOMEM;
 632             goto err_alloc_data_failed;
 633         }
 634
 635         ts->ts_wq = create_singlethread_workqueue("ts_wq");
 636         if (!ts->ts_wq)
 637         {
 638                 printk("%s:fail to create ts_wq,ret=0x%x\n",__FUNCTION__, ENOMEM);
 639                 return -ENOMEM;
 640         }
 641         //INIT_WORK(&ts->work, ili2102_ts_work_func);
 642         INIT_DELAYED_WORK(&ts->work, ili2102_ts_work_func);
 643         ts->client = client;
 644         i2c_set_clientdata(client, ts);
 645
 646         ret = setup_resetPin(client,ts);
 647         if(ret)
 648         {
 649                  printk("ili2102 TS setup_resetPin fail\n");
 650                  goto err_alloc_data_failed;
 651         }
 652
 653         ret=ili2102_chip_Init(ts->client);
 654         if(ret<0)
 655         {
 656                 printk("%s:chips init failed\n",__FUNCTION__);
 657                 goto err_resetpin_failed;
 658         }
 659
 660         /* allocate input device */
 661         ts->input_dev = input_allocate_device();
 662         if (ts->input_dev == NULL) {
 663             ret = -ENOMEM;
 664             printk(KERN_ERR "ili2102_ts_probe: Failed to allocate input device\n");
 665             goto err_input_dev_alloc_failed;
 666         }
 667
 668         ts->model = pdata->model ? : 801;
 669         ts->swap_xy = pdata->swap_xy;
 670         ts->x_min = pdata->x_min;
 671         ts->x_max = pdata->x_max;
 672         ts->y_min = pdata->y_min;
 673         ts->y_max = pdata->y_max;
 674         snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&client->dev));
 675         snprintf(ts->name, sizeof(ts->name), "ili%d-touchscreen", ts->model);
 676         ts->input_dev->phys = ts->phys;
 677         ts->input_dev->name = ts->name;
 678         ts->input_dev->dev.parent = &client->dev;
 679         ts->pendown = 0;
 680         ts->valid_i2c_register = 1;
 681
 682         ts->input_dev->evbit[0] = BIT_MASK(EV_SYN) | BIT_MASK(EV_ABS);
 683         //ts->input_dev->absbit[0] =
 684                 //BIT(ABS_MT_POSITION_X) | BIT(ABS_MT_POSITION_Y) |
 685                 //BIT(ABS_MT_TOUCH_MAJOR) | BIT(ABS_MT_WIDTH_MAJOR);  // for android
 686         input_set_abs_params(ts->input_dev, ABS_MT_POSITION_X,
 687                     ts->x_min ? : 0,
 688                         ts->x_max ? : 480,
 689                         0, 0);
 690         input_set_abs_params(ts->input_dev, ABS_MT_POSITION_Y,
 691                         ts->y_min ? : 0,
 692                         ts->y_max ? : 800,
 693                         0, 0);
 694         input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 1, 0, 0); //Finger Size
 695         input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 10, 0, 0); //Touch Size
 696
 697         /* ts->input_dev->name = ts->keypad_info->name; */
 698         ret = input_register_device(ts->input_dev);
 699         if (ret) {
 700             printk(KERN_ERR "ili2102_ts_probe: Unable to register %s input device\n", ts->input_dev->name);
 701             goto err_input_register_device_failed;
 702         }
 703
 704         client->irq = gpio_to_irq(client->irq);
 705         if (client->irq)
 706         {
 707                 ret = setup_pendown(client,ts);
 708                 if(ret)
 709                 {
 710                          printk("ili2102 TS setup_pendown fail\n");
 711                          goto err_input_register_device_failed;
 712                 }
 713
 714         ret = request_irq(client->irq, ili2102_ts_irq_handler, IRQF_DISABLED | IRQF_TRIGGER_LOW, client->name, ts);
 715         if (ret == 0) {
 716             DBG("ili2102 TS register ISR (irq=%d)\n", client->irq);
 717             ts->use_irq = 1;
 718         }
 719         else
 720                 dev_err(&client->dev, "request_irq failed\n");
 721     }
 722
 723 #if ILI2102_TS_APK_SUPPORT
 724         // initialize global variable
 725         g_ts = ts;
 726         memset(&g_dev, 0, sizeof(struct dev_data));
 727
 728         // allocate character device driver buffer
 729         ret = alloc_chrdev_region(&g_dev.devno, 0, 1, ILITEK_FILE_DRIVER_NAME);
 730         if(ret){
 731                 printk(ILITEK_ERROR_LEVEL "%s, can't allocate chrdev\n", __func__);
 732                 return ret;
 733         }
 734         printk(ILITEK_DEBUG_LEVEL "%s, register chrdev(%d, %d)\n", __func__, MAJOR(g_dev.devno), MINOR(g_dev.devno));
 735
 736         // initialize character device driver
 737         cdev_init(&g_dev.cdev, &ilitek_fops);
 738         g_dev.cdev.owner = THIS_MODULE;
 739         ret = cdev_add(&g_dev.cdev, g_dev.devno, 1);
 740         if(ret < 0){
 741                 printk(ILITEK_ERROR_LEVEL "%s, add character device error, ret %d\n", __func__, ret);
 742                 return ret;
 743         }
 744         g_dev.class = class_create(THIS_MODULE, ILITEK_FILE_DRIVER_NAME);
 745         if(IS_ERR(g_dev.class)){
 746                 printk(ILITEK_ERROR_LEVEL "%s, create class, error\n", __func__);
 747                 return ret;
 748         }
 749         device_create(g_dev.class, NULL, g_dev.devno, NULL, "ilitek_ctrl");
 750 #endif
 751
 752 #ifdef CONFIG_HAS_EARLYSUSPEND
 753         ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
 754         ts->early_suspend.suspend = ili2102_ts_early_suspend;
 755         ts->early_suspend.resume = ili2102_ts_late_resume;
 756         register_early_suspend(&ts->early_suspend);
 757 #endif
 758
 759         struct proc_dir_entry *ili2102_proc_entry;
 760         ili2102_proc_entry = proc_create("driver/ili2102", 0777, NULL, &ili2102_proc_fops);
 761
 762         printk(KERN_INFO "ili2102_ts_probe: Start touchscreen %s in %s mode\n", ts->input_dev->name, ts->use_irq ? "interrupt" : "polling");
 763
 764         return 0;
 765
 766         err_input_register_device_failed:
 767         input_free_device(ts->input_dev);
 768         err_resetpin_failed:
 769         gpio_free(ts->gpio_reset);
 770         err_input_dev_alloc_failed:
 771         kfree(ts);
 772         err_alloc_data_failed:
 773         err_check_functionality_failed:
 774         return ret;
 775 }
 776
 777 static int ili2102_ts_remove(struct i2c_client *client)
 778 {
 779         struct ili2102_ts_data *ts = i2c_get_clientdata(client);
 780         unregister_early_suspend(&ts->early_suspend);
 781         if (ts->use_irq)
 782         free_irq(client->irq, ts);
 783         else
 784         hrtimer_cancel(&ts->timer);
 785         input_unregister_device(ts->input_dev);
 786         if (ts->ts_wq)
 787         cancel_delayed_work_sync(&ts->work);
 788         kfree(ts);
 789
 790 #if ILI2102_TS_APK_SUPPORT
 791         // delete character device driver
 792         cdev_del(&g_dev.cdev);
 793         unregister_chrdev_region(g_dev.devno, 1);
 794         device_destroy(g_dev.class, g_dev.devno);
 795         class_destroy(g_dev.class);
 796 #endif
 797
 798         return 0;
 799 }
 800
 801 static int ili2102_ts_suspend(struct i2c_client *client, pm_message_t mesg)
 802 {
 803         int ret;
 804         struct ili2102_ts_data *ts = i2c_get_clientdata(client);
 805         uint8_t buf[1] = {0x30};
 806         struct i2c_msg msg[1];
 807
 808         //to do suspend
 809         msg[0].addr =client->addr;
 810         msg[0].flags = 0;
 811         msg[0].len = 1;
 812         msg[0].buf = buf;
 813
 814         ret = i2c_transfer(client->adapter, msg, 1);
 815         if (ret < 0) {
 816         printk("%s:err\n",__FUNCTION__);
 817         }
 818
 819         ret = cancel_delayed_work_sync(&ts->work);
 820         if (ret && ts->use_irq) /* if work was pending disable-count is now 2 */
 821         enable_irq(client->irq);
 822
 823         if (ts->use_irq)
 824         {
 825                 free_irq(client->irq, ts);
 826                 //change irq type to IRQF_TRIGGER_FALLING to avoid system death
 827                 ret = request_irq(client->irq, ili2102_ts_irq_handler, IRQF_DISABLED | IRQF_TRIGGER_FALLING, client->name, ts);
 828             if (ret == 0) {
 829                 disable_irq_nosync(client->irq);
 830                 ts->use_irq = 1;
 831             }
 832             else
 833                 printk("%s:request irq=%d failed,ret=%d\n",__FUNCTION__, ts->client->irq, ret);
 834         }
 835         else
 836         hrtimer_cancel(&ts->timer);
 837
 838         DBG("%s\n",__FUNCTION__);
 839
 840         return 0;
 841 }
 842
 843
 844 static void ili2102_ts_resume_work_func(struct work_struct *work)
 845 {
 846         struct ili2102_ts_data *ts = container_of(work, struct ili2102_ts_data, work);
 847         int ret;
 848
 849         //report touch up to android
 850         input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0); //Finger Size
 851         input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0); //Touch Size
 852         input_mt_sync(ts->input_dev);
 853         input_sync(ts->input_dev);
 854
 855         PREPARE_DELAYED_WORK(&ts->work, ili2102_ts_work_func);
 856         mdelay(100); //wait for 100ms before i2c operation
 857
 858         free_irq(ts->client->irq, ts);
 859         ret = request_irq(ts->client->irq, ili2102_ts_irq_handler, IRQF_DISABLED | IRQF_TRIGGER_LOW, ts->client->name, ts);
 860         if (ret == 0) {
 861         ts->use_irq = 1;
 862         //enable_irq(ts->client->irq);
 863         }
 864         else
 865         printk("%s:request irq=%d failed,ret=%d\n",__FUNCTION__,ts->client->irq,ret);
 866
 867         DBG("%s,irq=%d\n",__FUNCTION__,ts->client->irq);
 868 }
 869
 870
 871 static int ili2102_ts_resume(struct i2c_client *client)
 872 {
 873     struct ili2102_ts_data *ts = i2c_get_clientdata(client);
 874
 875     ili2102_init_panel(ts);
 876
 877     if (ts->use_irq) {
 878         if(!delayed_work_pending(&ts->work)){
 879                 PREPARE_DELAYED_WORK(&ts->work, ili2102_ts_resume_work_func);
 880                 queue_delayed_work(ts->ts_wq, &ts->work, 0);
 881         }
 882     }
 883     else {
 884         hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
 885     }
 886
 887         DBG("%s\n",__FUNCTION__);
 888
 889     return 0;
 890 }
 891
 892
 893 #ifdef CONFIG_HAS_EARLYSUSPEND
 894 static void ili2102_ts_early_suspend(struct early_suspend *h)
 895 {
 896     struct ili2102_ts_data *ts;
 897     ts = container_of(h, struct ili2102_ts_data, early_suspend);
 898     ili2102_ts_suspend(ts->client, PMSG_SUSPEND);
 899 }
 900
 901 static void ili2102_ts_late_resume(struct early_suspend *h)
 902 {
 903     struct ili2102_ts_data *ts;
 904     ts = container_of(h, struct ili2102_ts_data, early_suspend);
 905     ili2102_ts_resume(ts->client);
 906 }
 907 #endif
 908
 909 #define ILI2102_TS_NAME "ili2102_ts"
 910
 911 static const struct i2c_device_id ili2102_ts_id[] = {
 912     { ILI2102_TS_NAME, 0 },
 913     { }
 914 };
 915
 916 static struct i2c_driver ili2102_ts_driver = {
 917     .probe      = ili2102_ts_probe,
 918     .remove     = ili2102_ts_remove,
 919 #ifndef CONFIG_HAS_EARLYSUSPEND
 920     .suspend    = ili2102_ts_early_suspend,
 921     .resume     = ili2102_ts_late_resume,
 922 #endif
 923     .id_table   = ili2102_ts_id,
 924     .driver = {
 925         .name   = ILI2102_TS_NAME,
 926     },
 927 };
 928
 929 static int __devinit ili2102_ts_init(void)
 930 {
 931     return i2c_add_driver(&ili2102_ts_driver);
 932 }
 933
 934 static void __exit ili2102_ts_exit(void)
 935 {
 936         i2c_del_driver(&ili2102_ts_driver);
 937 }
 938
 939 module_init(ili2102_ts_init);
 940 module_exit(ili2102_ts_exit);
 941
 942 MODULE_DESCRIPTION("ili2102 Touchscreen Driver");
 943 MODULE_LICENSE("GPL");