drivers/input/touchscreen/rockchip_gslX680_rk3128.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 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/delay.h>
  15 #include <linux/hrtimer.h>
  16 #include <linux/i2c.h>
  17 #include <linux/input.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/io.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/async.h>
  22 #include <linux/irq.h>
  23 #include <linux/workqueue.h>
  24 #include <linux/proc_fs.h>
  25 #include <linux/input/mt.h>
  26 #include "rockchip_gslX680_rk3128.h"
  27 #include <linux/of_gpio.h>
  28 #include <linux/gpio.h>
  29 #include <linux/slab.h>
  30 #include <linux/device.h>
  31 #include "tp_suspend.h"
  32
  33 #define GPIO_HIGH 1
  34 #define GPIO_LOW 0
  35
  36 /* #define GSL_DEBUG */
  37 /* #define GSL_TIMER */
  38 #define REPORT_DATA_ANDROID_4_0
  39
  40 /* #define HAVE_TOUCH_KEY */
  41
  42 #define GSLX680_I2C_NAME "gslX680"
  43 #define GSLX680_I2C_ADDR 0x40
  44
  45 /* #define IRQ_PORT                     RK2928_PIN1_PB0 */
  46 /* #define WAKE_PORT                    RK2928_PIN0_PD3 */
  47
  48 #define GSL_DATA_REG            0x80
  49 #define GSL_STATUS_REG          0xe0
  50 #define GSL_PAGE_REG            0xf0
  51
  52 #define PRESS_MAX       255
  53 #define MAX_FINGERS     5
  54 #define MAX_CONTACTS    10
  55 #define DMA_TRANS_LEN   0x20
  56 /* #define FILTER_POINT */
  57 #ifdef FILTER_POINT
  58 #define FILTER_MAX      6
  59 #endif
  60
  61 #define WRITE_I2C_SPEED (350*1000)
  62 #define I2C_SPEED  (200*1000)
  63
  64
  65
  66 #define CLOSE_TP_POWER  0
  67
  68 #if CLOSE_TP_POWER
  69 static void set_tp_power(bool flag);
  70 #endif
  71
  72 #ifdef HAVE_TOUCH_KEY
  73 static u16 key;
  74 static int key_state_flag;
  75
  76
  77 struct key_data {
  78         u16 key;
  79         u16 x_min;
  80         u16 x_max;
  81         u16 y_min;
  82         u16 y_max;
  83 };
  84
  85 const u16 key_array[] = {
  86         KEY_BACK,
  87         KEY_HOME,
  88         KEY_MENU,
  89         KEY_SEARCH,
  90         };
  91
  92 #define MAX_KEY_NUM     (sizeof(key_array)/sizeof(key_array[0]))
  93
  94 struct key_data gsl_key_data[MAX_KEY_NUM] = {
  95         {KEY_BACK, 2048, 2048, 2048, 2048},
  96         {KEY_HOME, 2048, 2048, 2048, 2048},
  97         {KEY_MENU, 2048, 2048, 2048, 2048},
  98         {KEY_SEARCH, 2048, 2048, 2048, 2048},
  99 };
 100 #endif
 101
 102 struct gsl_ts_data {
 103         u8 x_index;
 104         u8 y_index;
 105         u8 z_index;
 106         u8 id_index;
 107         u8 touch_index;
 108         u8 data_reg;
 109         u8 status_reg;
 110         u8 data_size;
 111         u8 touch_bytes;
 112         u8 update_data;
 113         u8 touch_meta_data;
 114         u8 finger_size;
 115 };
 116
 117 static struct gsl_ts_data devices[] = {
 118         {
 119                 .x_index = 6,
 120                 .y_index = 4,
 121                 .z_index = 5,
 122                 .id_index = 7,
 123                 .data_reg = GSL_DATA_REG,
 124                 .status_reg = GSL_STATUS_REG,
 125                 .update_data = 0x4,
 126                 .touch_bytes = 4,
 127                 .touch_meta_data = 4,
 128                 .finger_size = 70,
 129         },
 130 };
 131
 132 struct gsl_ts {
 133         struct i2c_client *client;
 134         struct input_dev *input;
 135         struct work_struct work;
 136         struct workqueue_struct *wq;
 137         struct gsl_ts_data *dd;
 138         u8 *touch_data;
 139         u8 device_id;
 140         int irq;
 141 #if defined(CONFIG_HAS_EARLYSUSPEND)
 142         struct early_suspend early_suspend;
 143 #endif
 144 #ifdef GSL_TIMER
 145         struct timer_list gsl_timer;
 146 #endif
 147         int reset_gpio;
 148 };
 149
 150 static struct gsl_ts *g_gsl_ts;
 151
 152 #ifdef GSL_DEBUG
 153 #define print_info(fmt, args...) printk(fmt, ##args)
 154 #else
 155 #define print_info(fmt, args...)
 156 #endif
 157
 158 static int ts_global_reset_pin;
 159
 160 static u32 id_sign[MAX_CONTACTS+1] = {0};
 161 static u8 id_state_flag[MAX_CONTACTS+1] = {0};
 162 static u8 id_state_old_flag[MAX_CONTACTS+1] = {0};
 163 static u16 x_old[MAX_CONTACTS+1] = {0};
 164 static u16 y_old[MAX_CONTACTS+1] = {0};
 165 static u16 x_new;
 166 static u16 y_new;
 167
 168 int i2c_master_normal_send(const struct i2c_client *client, const char *buf, int count, int scl_rate)
 169 {
 170         int ret;
 171         struct i2c_adapter *adap = client->adapter;
 172         struct i2c_msg msg;
 173
 174         msg.addr = client->addr;
 175         msg.flags = client->flags;
 176         msg.len = count;
 177         msg.buf = (char *)buf;
 178         msg.scl_rate = scl_rate;
 179         ret = i2c_transfer(adap, &msg, 1);
 180         return (ret == 1) ? count : ret;
 181 }
 182
 183 int i2c_master_normal_recv(const struct i2c_client *client, char *buf, int count, int scl_rate)
 184 {
 185         struct i2c_adapter *adap = client->adapter;
 186         struct i2c_msg msg;
 187         int ret;
 188
 189         msg.addr = client->addr;
 190         msg.flags = client->flags | I2C_M_RD;
 191         msg.len = count;
 192         msg.buf = (char *)buf;
 193         msg.scl_rate = scl_rate;
 194
 195         ret = i2c_transfer(adap, &msg, 1);
 196
 197         return (ret == 1) ? count : ret;
 198 }
 199
 200 static int gslX680_shutdown_low(void)
 201 {
 202         gpio_direction_output(ts_global_reset_pin, GPIO_LOW);
 203         gpio_set_value(ts_global_reset_pin, GPIO_LOW);
 204         return 0;
 205 }
 206
 207 static int gslX680_shutdown_high(void)
 208 {
 209         gpio_direction_output(ts_global_reset_pin, GPIO_HIGH);
 210         gpio_set_value(ts_global_reset_pin, GPIO_HIGH);
 211         return 0;
 212 }
 213 static inline u16 join_bytes(u8 a, u8 b)
 214 {
 215         u16 ab = 0;
 216
 217         ab = ab | a;
 218         ab = ab << 8 | b;
 219         return ab;
 220 }
 221
 222 static u32 gsl_write_interface(struct i2c_client *client, const u8 reg, u8 *buf, u32 num)
 223 {
 224         struct i2c_msg xfer_msg[1];
 225
 226         buf[0] = reg;
 227
 228         xfer_msg[0].addr = client->addr;
 229         xfer_msg[0].len = num + 1;
 230         xfer_msg[0].flags = client->flags & I2C_M_TEN;
 231         xfer_msg[0].buf = buf;
 232         xfer_msg[0].scl_rate = WRITE_I2C_SPEED;
 233
 234         return i2c_transfer(client->adapter, xfer_msg, 1) == 1 ? 0 : -EFAULT;
 235 }
 236
 237 static int gsl_ts_write(struct i2c_client *client, u8 addr, u8 *pdata, int datalen)
 238 {
 239         int ret = 0;
 240         u8 tmp_buf[128];
 241         unsigned int bytelen;
 242
 243         bytelen = 0;
 244
 245         if (datalen > 125) {
 246                 printk("%s too big datalen = %d!\n", __func__, datalen);
 247                 return -1;
 248         }
 249
 250         tmp_buf[0] = addr;
 251         bytelen++;
 252         if (datalen != 0 && pdata != NULL) {
 253                 memcpy(&tmp_buf[bytelen], pdata, datalen);
 254                 bytelen += datalen;
 255         }
 256         ret = i2c_master_normal_send(client, tmp_buf, bytelen, I2C_SPEED);
 257         return ret;
 258 }
 259
 260 static int gsl_ts_read(struct i2c_client *client, u8 addr, u8 *pdata, unsigned int datalen)
 261 {
 262         int ret = 0;
 263
 264         if (datalen > 126) {
 265                 printk("%s too big datalen = %d!\n", __func__, datalen);
 266                 return -1;
 267         }
 268
 269         ret = gsl_ts_write(client, addr, NULL, 0);
 270         if (ret < 0) {
 271                 printk("%s set data address fail!\n", __func__);
 272                 return ret;
 273         }
 274         return i2c_master_normal_recv(client, pdata, datalen, I2C_SPEED);
 275 }
 276
 277
 278 static __inline__ void fw2buf(u8 *buf, const u32 *fw)
 279 {
 280         u32 *u32_buf = (int *)buf;
 281         *u32_buf = *fw;
 282 }
 283
 284 static void gsl_load_fw(struct i2c_client *client)
 285 {
 286         u8 buf[DMA_TRANS_LEN*4 + 1] = {0};
 287         u8 send_flag = 1;
 288         u8 *cur = buf + 1;
 289         u32 source_line = 0;
 290         u32 source_len;
 291         u8 read_buf[4] = {0};
 292         const struct fw_data *ptr_fw;
 293         printk("=============gsl_load_fw start==============\n");
 294
 295 #ifdef GSL1680E_COMPATIBLE
 296         msleep(50);
 297         gsl_ts_read(client, 0xfc, read_buf, 4);
 298
 299
 300         if (read_buf[2] != 0x82 && read_buf[2] != 0x88) {
 301                 msleep(100);
 302                 gsl_ts_read(client, 0xfc, read_buf, 4);
 303         }
 304         if (read_buf[2] == 0x82) {
 305                 ptr_fw = GSL1680E_FW;
 306                 source_len = ARRAY_SIZE(GSL1680E_FW);
 307         } else
 308 #endif
 309         {
 310                 ptr_fw = GSLX680_FW;
 311                 source_len = ARRAY_SIZE(GSLX680_FW);
 312         }
 313
 314         for (source_line = 0; source_line < source_len; source_line++) {
 315                 /* init page trans, set the page val */
 316                 if (GSL_PAGE_REG == ptr_fw[source_line].offset) {
 317                         fw2buf(cur, &ptr_fw[source_line].val);
 318                         gsl_write_interface(client, GSL_PAGE_REG, buf, 4);
 319                         send_flag = 1;
 320                 } else {
 321                         if (1 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20))
 322                                 buf[0] = (u8)ptr_fw[source_line].offset;
 323
 324                         fw2buf(cur, &ptr_fw[source_line].val);
 325                         cur += 4;
 326
 327                         if (0 == send_flag % (DMA_TRANS_LEN < 0x20 ? DMA_TRANS_LEN : 0x20)) {
 328                                 gsl_write_interface(client, buf[0], buf, cur - buf - 1);
 329                                 cur = buf + 1;
 330                         }
 331
 332                         send_flag++;
 333                 }
 334         }
 335
 336         printk("=============gsl_load_fw end==============\n");
 337 }
 338
 339
 340 static void startup_chip(struct i2c_client *client)
 341 {
 342         u8 tmp = 0x00;
 343         u8 buf[4] = {0x00};
 344
 345         buf[3] = 0x01;
 346         buf[2] = 0xfe;
 347         buf[1] = 0x10;
 348         buf[0] = 0x00;
 349         gsl_ts_write(client, 0xf0, buf, sizeof(buf));
 350         buf[3] = 0x00;
 351         buf[2] = 0x00;
 352         buf[1] = 0x00;
 353         buf[0] = 0x0f;
 354         gsl_ts_write(client, 0x04, buf, sizeof(buf));
 355         msleep(20);
 356         gsl_ts_write(client, 0xe0, &tmp, 1);
 357         msleep(10);
 358 }
 359
 360 static void reset_chip(struct i2c_client *client)
 361 {
 362         u8 tmp = 0x88;
 363         u8 buf[4] = {0x00};
 364
 365         gsl_ts_write(client, 0xe0, &tmp, sizeof(tmp));
 366         msleep(20);
 367         tmp = 0x04;
 368         gsl_ts_write(client, 0xe4, &tmp, sizeof(tmp));
 369         msleep(10);
 370         gsl_ts_write(client, 0xbc, buf, sizeof(buf));
 371         msleep(10);
 372 }
 373
 374 static void clr_reg(struct i2c_client *client)
 375 {
 376         u8 write_buf[4] = {0};
 377
 378         write_buf[0] = 0x88;
 379         gsl_ts_write(client, 0xe0, &write_buf[0], 1);
 380         msleep(20);
 381         write_buf[0] = 0x01;
 382         gsl_ts_write(client, 0x80, &write_buf[0], 1);
 383         msleep(5);
 384         write_buf[0] = 0x04;
 385         gsl_ts_write(client, 0xe4, &write_buf[0], 1);
 386         msleep(5);
 387         write_buf[0] = 0x00;
 388         gsl_ts_write(client, 0xe0, &write_buf[0], 1);
 389         msleep(20);
 390 }
 391
 392 static void init_chip(struct i2c_client *client)
 393 {
 394         gslX680_shutdown_low();
 395         msleep(20);
 396         gslX680_shutdown_high();
 397         msleep(20);
 398         clr_reg(client);
 399         reset_chip(client);
 400         gsl_load_fw(client);
 401         startup_chip(client);
 402         reset_chip(client);
 403         startup_chip(client);
 404 }
 405
 406 static void check_mem_data(struct i2c_client *client)
 407 {
 408         u8 read_buf[4]  = {0};
 409
 410         msleep(50);
 411         gsl_ts_read(client, 0xb0, read_buf, sizeof(read_buf));
 412
 413         if (read_buf[3] != 0x5a || read_buf[2] != 0x5a || read_buf[1] != 0x5a || read_buf[0] != 0x5a) {
 414          printk("#########check mem read 0xb0 = %x %x %x %x #########\n", read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 415    #if CLOSE_TP_POWER
 416           set_tp_power(false);
 417           msleep(200);
 418           set_tp_power(true);
 419           msleep(100);
 420    #endif
 421          init_chip(client);
 422         }
 423 }
 424
 425 static void record_point(u16 x, u16 y , u8 id)
 426 {
 427         u16 x_err = 0;
 428         u16 y_err = 0;
 429
 430         id_sign[id] = id_sign[id] + 1;
 431
 432         if (id_sign[id] == 1) {
 433                 x_old[id] = x;
 434                 y_old[id] = y;
 435         }
 436
 437         x = (x_old[id] + x)/2;
 438         y = (y_old[id] + y)/2;
 439
 440         if (x > x_old[id]) {
 441                 x_err = x - x_old[id];
 442         } else {
 443                 x_err = x_old[id]-x;
 444         }
 445
 446         if (y > y_old[id]) {
 447                 y_err = y - y_old[id];
 448         } else {
 449                 y_err = y_old[id] - y;
 450         }
 451
 452         if ((x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3)) {
 453                 x_new = x;
 454                 x_old[id] = x;
 455                 y_new = y;
 456                 y_old[id] = y;
 457         } else {
 458                 if (x_err > 3) {
 459                         x_new = x;
 460                         x_old[id] = x;
 461                 } else
 462                         x_new = x_old[id];
 463
 464                 if (y_err > 3) {
 465                         y_new = y;
 466                         y_old[id] = y;
 467                 } else
 468                         y_new = y_old[id];
 469         }
 470
 471         if (id_sign[id] == 1) {
 472                 x_new = x_old[id];
 473                 y_new = y_old[id];
 474         }
 475 }
 476
 477 static void report_data(struct gsl_ts *ts, u16 x, u16 y, u8 pressure, u8 id)
 478 {
 479         swap(x, y);
 480
 481         print_info("#####id=%d,x=%d,y=%d######\n", id, x, y);
 482         x = 1024 - x;
 483         y = 600 - y;
 484
 485         if (x > SCREEN_MAX_X || y > SCREEN_MAX_Y) {
 486         #ifdef HAVE_TOUCH_KEY
 487                 report_key(ts, x, y);
 488         #endif
 489                 return;
 490         }
 491
 492 #ifdef REPORT_DATA_ANDROID_4_0
 493         input_mt_slot(ts->input, id);
 494         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 495         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 496         input_report_abs(ts->input, ABS_MT_POSITION_X, x);
 497         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 498         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 499 #else
 500         input_report_abs(ts->input, ABS_MT_TRACKING_ID, id);
 501         input_report_abs(ts->input, ABS_MT_TOUCH_MAJOR, pressure);
 502         input_report_abs(ts->input, ABS_MT_POSITION_X, x);
 503         input_report_abs(ts->input, ABS_MT_POSITION_Y, y);
 504         input_report_abs(ts->input, ABS_MT_WIDTH_MAJOR, 1);
 505         input_mt_sync(ts->input);
 506 #endif
 507 }
 508
 509 static void process_gslX680_data(struct gsl_ts *ts)
 510 {
 511         u8 id, touches;
 512         u16 x, y;
 513         int i = 0;
 514
 515         touches = ts->touch_data[ts->dd->touch_index];
 516         for (i = 1; i <= MAX_CONTACTS; i++) {
 517                 if (touches == 0)
 518                         id_sign[i] = 0;
 519                 id_state_flag[i] = 0;
 520         }
 521
 522         for (i = 0; i < (touches > MAX_FINGERS ? MAX_FINGERS : touches); i++) {
 523                 x = join_bytes((ts->touch_data[ts->dd->x_index + 4*i + 1] & 0xf), ts->touch_data[ts->dd->x_index + 4*i]);
 524                 y = join_bytes(ts->touch_data[ts->dd->y_index + 4*i + 1], ts->touch_data[ts->dd->y_index + 4*i]);
 525                 id = ts->touch_data[ts->dd->id_index + 4*i] >> 4;
 526
 527                 if (1 <= id && id <= MAX_CONTACTS) {
 528                 #ifdef FILTER_POINT
 529                         filter_point(x, y, id);
 530                 #else
 531                         record_point(x, y, id);
 532                 #endif
 533                         report_data(ts, x_new, y_new, 50, id);
 534                         id_state_flag[id] = 1;
 535                 }
 536         }
 537
 538         for (i = 1; i <= MAX_CONTACTS; i++) {
 539                 if ((0 == touches) || ((0 != id_state_old_flag[i]) && (0 == id_state_flag[i]))) {
 540                 #ifdef REPORT_DATA_ANDROID_4_0
 541                         input_mt_slot(ts->input, i);
 542                         input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
 543                         input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
 544                 #endif
 545                         id_sign[i] = 0;
 546                 }
 547                 id_state_old_flag[i] = id_state_flag[i];
 548         }
 549 #ifndef REPORT_DATA_ANDROID_4_0
 550         if (0 == touches) {
 551                 input_mt_sync(ts->input);
 552         #ifdef HAVE_TOUCH_KEY
 553                 if (key_state_flag) {
 554                         input_report_key(ts->input, key, 0);
 555                         input_sync(ts->input);
 556                         key_state_flag = 0;
 557                 }
 558         #endif
 559         }
 560 #endif
 561         input_sync(ts->input);
 562 }
 563
 564
 565 static void gsl_ts_xy_worker(struct work_struct *work)
 566 {
 567         int rc;
 568         u8 read_buf[4] = {0};
 569
 570         struct gsl_ts *ts = container_of(work, struct gsl_ts, work);
 571         print_info("---gsl_ts_xy_worker---\n");
 572
 573         /* read data from DATA_REG */
 574         rc = gsl_ts_read(ts->client, 0x80, ts->touch_data, ts->dd->data_size);
 575         print_info("---touches: %d ---\n", ts->touch_data[0]);
 576
 577         if (rc < 0) {
 578                 dev_err(&ts->client->dev, "read failed\n");
 579                 goto schedule;
 580         }
 581
 582         if (ts->touch_data[ts->dd->touch_index] == 0xff) {
 583                 goto schedule;
 584         }
 585
 586         rc = gsl_ts_read(ts->client, 0xbc, read_buf, sizeof(read_buf));
 587         if (rc < 0) {
 588                 dev_err(&ts->client->dev, "read 0xbc failed\n");
 589                 goto schedule;
 590         }
 591         print_info("//////// reg %x : %x %x %x %x\n", 0xbc, read_buf[3], read_buf[2], read_buf[1], read_buf[0]);
 592
 593         if (read_buf[3] == 0 && read_buf[2] == 0 && read_buf[1] == 0 && read_buf[0] == 0) {
 594                 process_gslX680_data(ts);
 595         } else {
 596                 reset_chip(ts->client);
 597                 startup_chip(ts->client);
 598         }
 599 schedule:
 600         enable_irq(ts->irq);
 601 }
 602
 603 static irqreturn_t gsl_ts_irq(int irq, void *dev_id)
 604 {
 605         struct gsl_ts *ts = dev_id;
 606
 607         print_info("==========GSLX680 Interrupt============\n");
 608
 609         disable_irq_nosync(ts->irq);
 610
 611         if (!work_pending(&ts->work)) {
 612                 queue_work(ts->wq, &ts->work);
 613         }
 614
 615         return IRQ_HANDLED;
 616
 617 }
 618
 619 #ifdef GSL_TIMER
 620 static void gsl_timer_handle(unsigned long data)
 621 {
 622         struct gsl_ts *ts = (struct gsl_ts *)data;
 623
 624 #ifdef GSL_DEBUG
 625         printk("----------------gsl_timer_handle-----------------\n");
 626 #endif
 627
 628         disable_irq_nosync(ts->irq);
 629         check_mem_data(ts->client);
 630         ts->gsl_timer.expires = jiffies + 3 * HZ;
 631         add_timer(&ts->gsl_timer);
 632         enable_irq(ts->irq);
 633 }
 634 #endif
 635
 636 static int gsl_ts_init_ts(struct i2c_client *client, struct gsl_ts *ts)
 637 {
 638         struct input_dev *input_device;
 639 #ifdef CONFIG_MACH_RK_FAC
 640         struct tp_platform_data *pdata = client->dev.platform_data;
 641 #endif
 642         int rc = 0;
 643
 644         printk("[GSLX680] Enter %s\n", __func__);
 645
 646         ts->dd = &devices[ts->device_id];
 647
 648         if (ts->device_id == 0) {
 649                 ts->dd->data_size = MAX_FINGERS * ts->dd->touch_bytes + ts->dd->touch_meta_data;
 650                 ts->dd->touch_index = 0;
 651         }
 652
 653         ts->touch_data = kzalloc(ts->dd->data_size, GFP_KERNEL);
 654         if (!ts->touch_data) {
 655                 pr_err("%s: Unable to allocate memory\n", __func__);
 656                 return -ENOMEM;
 657         }
 658
 659
 660         input_device = input_allocate_device();
 661         if (!input_device) {
 662                 rc = -ENOMEM;
 663                 goto error_alloc_dev;
 664         }
 665
 666         ts->input = input_device;
 667         input_device->name = GSLX680_I2C_NAME;
 668         input_device->id.bustype = BUS_I2C;
 669         input_device->dev.parent = &client->dev;
 670         input_set_drvdata(input_device, ts);
 671
 672 #ifdef REPORT_DATA_ANDROID_4_0
 673         __set_bit(EV_ABS, input_device->evbit);
 674         __set_bit(EV_KEY, input_device->evbit);
 675         __set_bit(EV_REP, input_device->evbit);
 676         __set_bit(INPUT_PROP_DIRECT, input_device->propbit);
 677         input_mt_init_slots(input_device, (MAX_CONTACTS+1), 0);
 678 #else
 679         input_set_abs_params(input_device, ABS_MT_TRACKING_ID, 0, (MAX_CONTACTS+1), 0, 0);
 680         set_bit(EV_ABS, input_device->evbit);
 681         set_bit(EV_KEY, input_device->evbit);
 682 #endif
 683
 684 #ifdef HAVE_TOUCH_KEY
 685         input_device->evbit[0] = BIT_MASK(EV_KEY);
 686         for (i = 0; i < MAX_KEY_NUM; i++)
 687                 set_bit(key_array[i], input_device->keybit);
 688 #endif
 689
 690         set_bit(ABS_MT_POSITION_X, input_device->absbit);
 691         set_bit(ABS_MT_POSITION_Y, input_device->absbit);
 692         set_bit(ABS_MT_TOUCH_MAJOR, input_device->absbit);
 693         set_bit(ABS_MT_WIDTH_MAJOR, input_device->absbit);
 694 #ifdef CONFIG_MACH_RK_FAC
 695         input_set_abs_params(input_device, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0);
 696         input_set_abs_params(input_device, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0);
 697 #else
 698         input_set_abs_params(input_device, ABS_MT_POSITION_X, 0, SCREEN_MAX_X, 0, 0);
 699         input_set_abs_params(input_device, ABS_MT_POSITION_Y, 0, SCREEN_MAX_Y, 0, 0);
 700 #endif
 701         input_set_abs_params(input_device, ABS_MT_TOUCH_MAJOR, 0, PRESS_MAX, 0, 0);
 702         input_set_abs_params(input_device, ABS_MT_WIDTH_MAJOR, 0, 200, 0, 0);
 703
 704         client->irq = ts->irq;
 705
 706         ts->wq = create_singlethread_workqueue("kworkqueue_ts");
 707         if (!ts->wq) {
 708                 dev_err(&client->dev, "Could not create workqueue\n");
 709                 goto error_wq_create;
 710         }
 711         flush_workqueue(ts->wq);
 712
 713         INIT_WORK(&ts->work, gsl_ts_xy_worker);
 714
 715         rc = input_register_device(input_device);
 716         if (rc)
 717                 goto error_unreg_device;
 718
 719         return 0;
 720
 721 error_unreg_device:
 722         destroy_workqueue(ts->wq);
 723 error_wq_create:
 724         input_free_device(input_device);
 725 error_alloc_dev:
 726         kfree(ts->touch_data);
 727         return rc;
 728 }
 729
 730
 731 #if 1
 732 static int gsl_ts_suspend(void)
 733 {
 734         struct gsl_ts *ts = g_gsl_ts;
 735         printk("I'am in gsl_ts_suspend() start\n");
 736         flush_workqueue(ts->wq);
 737 #ifdef GSL_TIMER
 738         printk("gsl_ts_suspend () : delete gsl_timer\n");
 739         del_timer(&ts->gsl_timer);
 740 #endif
 741         disable_irq_nosync(ts->irq);
 742         gslX680_shutdown_low();
 743         return 0;
 744 }
 745
 746 static int gsl_ts_resume(void)
 747 {
 748         struct gsl_ts *ts = g_gsl_ts;
 749         int i = 0;
 750
 751         printk("I'am in gsl_ts_resume() start\n");
 752
 753         gslX680_shutdown_high();
 754         msleep(20);
 755         reset_chip(ts->client);
 756         startup_chip(ts->client);
 757         check_mem_data(ts->client);
 758
 759         msleep(100);
 760         reset_chip(ts->client);
 761         startup_chip(ts->client);
 762         msleep(100);
 763         reset_chip(ts->client);
 764         startup_chip(ts->client);
 765 #ifdef GSL_TIMER
 766         printk("gsl_ts_resume () : add gsl_timer\n");
 767         init_timer(&ts->gsl_timer);
 768         ts->gsl_timer.expires = jiffies + 3 * HZ;
 769         ts->gsl_timer.function = &gsl_timer_handle;
 770         ts->gsl_timer.data = (unsigned long)ts;
 771         add_timer(&ts->gsl_timer);
 772 #endif
 773
 774   for (i = 1; i <= MAX_CONTACTS; i++) {
 775                 if (0 != id_state_old_flag[i]) {
 776                 #ifdef REPORT_DATA_ANDROID_4_0
 777                         input_mt_slot(ts->input, i);
 778                         input_report_abs(ts->input, ABS_MT_TRACKING_ID, -1);
 779                         input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, false);
 780                         input_sync(ts->input);
 781                 #endif
 782                         id_sign[i] = 0;
 783                 }
 784                 id_state_old_flag[i] = id_state_flag[i] = 0;
 785         }
 786         enable_irq(ts->irq);
 787         return 0;
 788 }
 789
 790 static int gsl_ts_fb_event_notify(struct notifier_block *self,
 791                                       unsigned long action, void *data)
 792 {
 793         struct fb_event *event = data;
 794         int blank_mode = *((int *)event->data);
 795
 796         if (action == FB_EARLY_EVENT_BLANK) {
 797                 switch (blank_mode) {
 798                 case FB_BLANK_UNBLANK:
 799                         break;
 800                 default:
 801                         gsl_ts_suspend();
 802                         break;
 803                 }
 804         } else if (action == FB_EVENT_BLANK) {
 805                 switch (blank_mode) {
 806                 case FB_BLANK_UNBLANK:
 807                         gsl_ts_resume();
 808                         break;
 809                 default:
 810                         break;
 811                 }
 812         }
 813
 814         return NOTIFY_OK;
 815 }
 816
 817 static struct notifier_block gsl_ts_fb_notifier = {
 818         .notifier_call = gsl_ts_fb_event_notify,
 819 };
 820
 821 #endif
 822
 823 int gslx680_config_hw(struct gsl_ts *ts)
 824 {
 825         struct device_node *np;
 826         enum of_gpio_flags rst_flags;
 827         unsigned long irq_flags;
 828         unsigned int irq_gpio;
 829         struct device *dev;
 830
 831         dev = &ts->client->dev;
 832         np = dev->of_node;
 833
 834         irq_gpio = of_get_named_gpio_flags(np, "touch-gpio", 0, (enum of_gpio_flags *)&irq_flags);
 835         ts->irq = gpio_to_irq(irq_gpio);
 836         ts->reset_gpio = of_get_named_gpio_flags(np, "reset-gpio", 0, &rst_flags);
 837
 838         if (gpio_request(ts->reset_gpio, NULL) != 0) {
 839                 gpio_free(ts->reset_gpio);
 840                 printk("gslx680_init_platform_hw gpio_request error\n");
 841                 return -EIO;
 842         }
 843
 844         if (gpio_request(irq_gpio, NULL) != 0) {
 845              gpio_free(irq_gpio);
 846              printk("gslx680_init_platform_hw  gpio_request error\n");
 847              return -EIO;
 848         }
 849
 850         gpio_direction_output(ts->reset_gpio, GPIO_HIGH);
 851         mdelay(10);
 852         gpio_set_value(ts->reset_gpio, GPIO_LOW);
 853         mdelay(10);
 854         gpio_set_value(ts->reset_gpio, GPIO_HIGH);
 855         msleep(300);
 856         return 0;
 857
 858 }
 859
 860
 861 static int  gsl_ts_probe(struct i2c_client *client,
 862                         const struct i2c_device_id *id)
 863 {
 864         struct gsl_ts *ts;
 865         int rc;
 866         u8 read_buf = 0;
 867         int ret;
 868
 869         printk("GSLX680 Enter %s\n", __func__);
 870         if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 871                 dev_err(&client->dev, "I2C functionality not supported\n");
 872                 return -ENODEV;
 873         }
 874
 875         ts = kzalloc(sizeof(*ts), GFP_KERNEL);
 876         if (!ts)
 877                 return -ENOMEM;
 878         printk("==kzalloc success=\n");
 879         g_gsl_ts = ts;
 880
 881         ts->client = client;
 882         ts->device_id = id->driver_data;
 883
 884         gslx680_config_hw(ts);
 885         ts_global_reset_pin = ts->reset_gpio;
 886         i2c_set_clientdata(client, ts);
 887
 888         rc = gsl_ts_init_ts(client, ts);
 889         if (rc < 0) {
 890                 dev_err(&client->dev, "GSLX680 init failed\n");
 891                 goto error_mutex_destroy;
 892         }
 893
 894         init_chip(ts->client);
 895         check_mem_data(ts->client);
 896
 897         rc = request_irq(client->irq, gsl_ts_irq, IRQF_TRIGGER_RISING, client->name, ts);
 898         if (rc < 0) {
 899                 printk("gsl_probe: request irq failed\n");
 900                 goto error_req_irq_fail;
 901         }
 902
 903         disable_irq(client->irq);
 904
 905         ret = gsl_ts_read(client, 0xf0, &read_buf, sizeof(read_buf));
 906         if (ret  < 0) {
 907                 pr_info("gslx680  I2C transfer error!\n");
 908                 goto error_req_irq_fail;
 909         }
 910
 911 #ifdef GSL_TIMER
 912         printk("gsl_ts_probe () : add gsl_timer\n");
 913
 914         init_timer(&ts->gsl_timer);
 915         ts->gsl_timer.expires = jiffies + 3 * HZ;
 916         ts->gsl_timer.function = &gsl_timer_handle;
 917         ts->gsl_timer.data = (unsigned long)ts;
 918         add_timer(&ts->gsl_timer);
 919 #endif
 920         fb_register_client(&gsl_ts_fb_notifier);
 921
 922         printk("[GSLX680] End %s\n", __func__);
 923
 924         return 0;
 925
 926 error_req_irq_fail:
 927     free_irq(ts->irq, ts);
 928
 929 error_mutex_destroy:
 930         input_free_device(ts->input);
 931         kfree(ts);
 932         return rc;
 933 }
 934
 935 static int  gsl_ts_remove(struct i2c_client *client)
 936 {
 937         struct gsl_ts *ts = i2c_get_clientdata(client);
 938         printk("==gsl_ts_remove=\n");
 939         device_init_wakeup(&client->dev, 0);
 940         cancel_work_sync(&ts->work);
 941         free_irq(ts->irq, ts);
 942         destroy_workqueue(ts->wq);
 943         input_unregister_device(ts->input);
 944
 945         kfree(ts->touch_data);
 946         kfree(ts);
 947
 948         return 0;
 949 }
 950
 951 static const struct i2c_device_id gsl_ts_id[] = {
 952         {GSLX680_I2C_NAME, 0},
 953         {}
 954 };
 955 MODULE_DEVICE_TABLE(i2c, gsl_ts_id);
 956
 957 static struct of_device_id gslX680_dt_ids[] = {
 958         { .compatible = "gslX680" },
 959 };
 960
 961 static struct i2c_driver gsl_ts_driver = {
 962         .driver = {
 963                 .name = GSLX680_I2C_NAME,
 964                 .owner = THIS_MODULE,
 965                 .of_match_table = of_match_ptr(gslX680_dt_ids),
 966         },
 967         .probe          = gsl_ts_probe,
 968         .remove         = gsl_ts_remove,
 969         .id_table       = gsl_ts_id,
 970 };
 971
 972 static int __init gsl_ts_init(void)
 973 {
 974     int ret;
 975         printk("==gsl_ts_init==\n");
 976         ret = i2c_add_driver(&gsl_ts_driver);
 977         printk("ret=%d\n", ret);
 978         return ret;
 979 }
 980 static void __exit gsl_ts_exit(void)
 981 {
 982         printk("==gsl_ts_exit==\n");
 983         i2c_del_driver(&gsl_ts_driver);
 984         return;
 985 }
 986
 987 module_init(gsl_ts_init);
 988 module_exit(gsl_ts_exit);
 989
 990 MODULE_LICENSE("GPL");
 991 MODULE_DESCRIPTION("GSLX680 touchscreen controller driver");
 992 MODULE_AUTHOR("Guan Yuwei, guanyuwei@basewin.com");
 993 MODULE_ALIAS("platform:gsl_ts");