drivers/headset_observe/rk_headset_irq_hook_adc.c

   1 /* arch/arm/mach-rockchip/rk28_headset.c
   2  *
   3  * Copyright (C) 2009 Rockchip Corporation.
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  */
  15
  16 #include <linux/module.h>
  17 #include <linux/sysdev.h>
  18 #include <linux/device.h>
  19 #include <linux/fs.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/workqueue.h>
  22 #include <linux/irq.h>
  23 #include <linux/delay.h>
  24 #include <linux/types.h>
  25 #include <linux/input.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/mutex.h>
  28 #include <linux/errno.h>
  29 #include <linux/err.h>
  30 #include <linux/hrtimer.h>
  31 #include <linux/switch.h>
  32 #include <linux/input.h>
  33 #include <linux/debugfs.h>
  34 #include <linux/wakelock.h>
  35 #include <asm/gpio.h>
  36 #include <asm/atomic.h>
  37 #include <asm/mach-types.h>
  38 #include "rk_headset.h"
  39 #include <linux/earlysuspend.h>
  40 #include <linux/gpio.h>
  41 #include <mach/board.h>
  42 #include <linux/slab.h>
  43 #include <linux/adc.h>
  44 #include <linux/wakelock.h>
  45
  46 /* Debug */
  47 #if 1
  48 #define DBG(x...) printk(x)
  49 #else
  50 #define DBG(x...) do { } while (0)
  51 #endif
  52
  53 #define HOOK_ADC_SAMPLE_TIME    50
  54 #define HOOK_LEVEL_HIGH                 410             //1V*1024/2.5
  55 #define HOOK_LEVEL_LOW                  204             //0.5V*1024/2.5
  56 #define HOOK_DEFAULT_VAL                1024
  57
  58 #define BIT_HEADSET             (1 << 0)
  59 #define BIT_HEADSET_NO_MIC      (1 << 1)
  60
  61 #define HEADSET 0
  62 #define HOOK 1
  63
  64 #define HEADSET_IN 1
  65 #define HEADSET_OUT 0
  66 #define HOOK_DOWN 1
  67 #define HOOK_UP 0
  68 #define enable 1
  69 #define disable 0
  70
  71 #define HEADSET_TIMER 1
  72 #define HOOK_TIMER 2
  73
  74 #define WAIT 2
  75 #define BUSY 1
  76 #define IDLE 0
  77
  78 #ifdef CONFIG_SND_SOC_WM8994
  79 extern int wm8994_headset_mic_detect(bool headset_status);
  80 #endif
  81
  82 #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
  83 extern int rt3261_headset_mic_detect(int jack_insert);
  84 #endif
  85
  86 /* headset private data */
  87 struct headset_priv {
  88         struct input_dev *input_dev;
  89         struct rk_headset_pdata *pdata;
  90         unsigned int headset_status:1;
  91         unsigned int hook_status:1;
  92         int isMic;
  93         unsigned int heatset_irq_working;// headset interrupt working will not check hook key
  94         int cur_headset_status;
  95
  96         unsigned int irq[2];
  97         unsigned int irq_type[2];
  98         struct delayed_work h_delayed_work[2];
  99         struct switch_dev sdev;
 100         struct mutex mutex_lock[2];
 101         struct timer_list headset_timer;
 102         unsigned char *keycodes;
 103         struct adc_client *client;
 104         struct timer_list hook_timer;
 105         unsigned int hook_time;//ms
 106         struct wake_lock headset_on_wake;
 107 };
 108 static struct headset_priv *headset_info;
 109
 110 int Headset_isMic(void)
 111 {
 112         return headset_info->isMic;
 113 }
 114 EXPORT_SYMBOL_GPL(Headset_isMic);
 115
 116 //1
 117 static irqreturn_t headset_interrupt(int irq, void *dev_id)
 118 {
 119         struct rk_headset_pdata *pdata = headset_info->pdata;
 120         static unsigned int old_status = 0;
 121         int i,level = 0;
 122         int adc_value = 0;
 123         wake_lock(&headset_info->headset_on_wake);
 124         if(headset_info->heatset_irq_working == BUSY || headset_info->heatset_irq_working == WAIT)
 125                 return IRQ_HANDLED;
 126         DBG("In the headset_interrupt for read headset level  wake_lock headset_on_wake\n");
 127         headset_info->heatset_irq_working = BUSY;
 128         msleep(150);
 129         for(i=0; i<3; i++)
 130         {
 131                 level = gpio_get_value(pdata->Headset_gpio);
 132                 if(level < 0)
 133                 {
 134                         printk("%s:get pin level again,pin=%d,i=%d\n",__FUNCTION__,pdata->Headset_gpio,i);
 135                         msleep(1);
 136                         continue;
 137                 }
 138                 else
 139                 break;
 140         }
 141         if(level < 0)
 142         {
 143                 printk("%s:get pin level  err!\n",__FUNCTION__);
 144                 goto out;
 145         }
 146
 147         old_status = headset_info->headset_status;
 148         switch(pdata->headset_in_type)
 149         {
 150         case HEADSET_IN_HIGH:
 151                 if(level > 0)
 152                         headset_info->headset_status = HEADSET_IN;
 153                 else if(level == 0)
 154                         headset_info->headset_status = HEADSET_OUT;
 155                 break;
 156         case HEADSET_IN_LOW:
 157                 if(level == 0)
 158                         headset_info->headset_status = HEADSET_IN;
 159                 else if(level > 0)
 160                         headset_info->headset_status = HEADSET_OUT;
 161                 break;
 162         default:
 163                 DBG("---- ERROR: on headset headset_in_type error -----\n");
 164                 break;
 165         }
 166         if(old_status == headset_info->headset_status)
 167         {
 168                 DBG("Read Headset IO level old status == now status\n");
 169                 goto out;
 170         }
 171
 172         DBG("(headset in is %s)headset status is %s\n",
 173                 pdata->headset_in_type?"high level":"low level",
 174                 headset_info->headset_status?"in":"out");
 175         if(headset_info->headset_status == HEADSET_IN)
 176         {
 177                 #if 0
 178                 while(1)
 179                 {
 180                         if(adc_sync_read(headset_info->client) > HOOK_DEFAULT_VAL
 181                          || adc_sync_read(headset_info->client) < 0)
 182                         {
 183                                 printk("headset is showly inside\n");
 184                         }
 185                         else
 186                                 break;
 187                         msleep(50);
 188
 189                         if(pdata->headset_in_type == HEADSET_IN_HIGH)
 190                                 old_status = headset_info->headset_status = gpio_get_value(pdata->Headset_gpio)?HEADSET_IN:HEADSET_OUT;
 191                         else
 192                                 old_status = headset_info->headset_status = gpio_get_value(pdata->Headset_gpio)?HEADSET_OUT:HEADSET_IN;
 193                         if(headset_info->headset_status == HEADSET_OUT)
 194                                 goto out1;
 195                         msleep(5);
 196                 }
 197                 #endif
 198                 if(pdata->Hook_adc_chn>=0 && 3>=pdata->Hook_adc_chn)
 199                 {
 200                 // wait for find Hook key
 201                         //#ifdef CONFIG_SND_SOC_RT5625
 202                         CHECK_AGAIN:
 203                         //headset_info->isMic = rt5625_headset_mic_detect(true);
 204                         #ifdef CONFIG_SND_SOC_WM8994
 205                         wm8994_headset_mic_detect(true);
 206                         #endif
 207                         #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 208                         rt3261_headset_mic_detect(true);
 209                         #endif
 210                         //mdelay(400);
 211                         adc_value = adc_sync_read(headset_info->client);
 212                         if(adc_value >= 0 && adc_value < HOOK_LEVEL_LOW)
 213                         {
 214                                 headset_info->isMic= 0;//No microphone
 215                                 #ifdef CONFIG_SND_SOC_WM8994
 216                                 wm8994_headset_mic_detect(false);
 217                                 #endif
 218                                 #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 219                                 rt3261_headset_mic_detect(false);
 220                                 #endif
 221                         }
 222                         else if(adc_value >= HOOK_LEVEL_HIGH)
 223                                 headset_info->isMic = 1;//have mic
 224
 225                         if(headset_info->isMic < 0)
 226                         {
 227                                 printk("codec is error\n");
 228                                 headset_info->heatset_irq_working = WAIT;
 229                                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 230                                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_LOW|IRQF_ONESHOT);
 231                                 else
 232                                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_HIGH|IRQF_ONESHOT);
 233                                 schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(0));
 234                                 wake_unlock(&headset_info->headset_on_wake);
 235                                 return IRQ_HANDLED;
 236                         }
 237                         //adc_value = adc_sync_read(headset_info->client);
 238                         printk("headset adc value = %d\n",adc_value);
 239                         if(headset_info->isMic) {
 240                                 if(adc_value > HOOK_DEFAULT_VAL || adc_value < HOOK_LEVEL_HIGH)
 241                                         goto CHECK_AGAIN;
 242                                 mod_timer(&headset_info->hook_timer, jiffies + msecs_to_jiffies(1000));
 243                         }
 244                         //#endif
 245                         headset_info->cur_headset_status = headset_info->isMic ? BIT_HEADSET:BIT_HEADSET_NO_MIC;
 246                 }
 247                 else
 248                 {
 249                         headset_info->isMic= 0;//No microphone
 250                         headset_info->cur_headset_status = BIT_HEADSET_NO_MIC;
 251                 }
 252                 printk("headset->isMic = %d\n",headset_info->isMic);
 253                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 254                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_FALLING);
 255                 else
 256                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_RISING);
 257         }
 258         else if(headset_info->headset_status == HEADSET_OUT)
 259         {
 260                 headset_info->cur_headset_status = ~(BIT_HEADSET|BIT_HEADSET_NO_MIC);
 261                 del_timer(&headset_info->hook_timer);
 262                 if(headset_info->isMic)
 263                 {
 264                         headset_info->hook_status = HOOK_UP;
 265                         #ifdef CONFIG_SND_SOC_WM8994
 266                         //rt5625_headset_mic_detect(false);
 267                         wm8994_headset_mic_detect(false);
 268                         #endif
 269                         #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 270                         rt3261_headset_mic_detect(false);
 271                         #endif
 272                 }
 273                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 274                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_RISING);
 275                 else
 276                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_FALLING);
 277         }
 278
 279         rk28_send_wakeup_key();
 280         switch_set_state(&headset_info->sdev, headset_info->cur_headset_status);
 281         DBG("headset notice android headset status = %d\n",headset_info->cur_headset_status);
 282
 283 //      schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(0));
 284 out:
 285         headset_info->heatset_irq_working = IDLE;
 286         wake_unlock(&headset_info->headset_on_wake);
 287         return IRQ_HANDLED;
 288 }
 289
 290 static int headset_change_irqtype(int type,unsigned int irq_type)
 291 {
 292         int ret = 0;
 293         free_irq(headset_info->irq[type],NULL);
 294
 295         DBG("%s: type is %s irqtype is %s\n",__FUNCTION__,      type?"hook":"headset",(irq_type == IRQF_TRIGGER_RISING)?"RISING":"FALLING");
 296 //      DBG("%s: type is %s irqtype is %s\n",__FUNCTION__,      type?"hook":"headset",(irq_type == IRQF_TRIGGER_LOW)?"LOW":"HIGH");
 297         switch(type)
 298         {
 299         case HEADSET:
 300                 ret = request_threaded_irq(headset_info->irq[type],NULL, headset_interrupt, irq_type, "headset_input", NULL);
 301                 if (ret<0)
 302                         DBG("headset_change_irqtype: request irq failed\n");
 303                 break;
 304         default:
 305                 ret = -1;
 306                 break;
 307         }
 308         return ret;
 309 }
 310 //2
 311 static void headsetobserve_work(struct work_struct *work)
 312 {
 313         struct rk_headset_pdata *pdata = headset_info->pdata;
 314         DBG("In the headsetobserve_work headset_status is %s\n",headset_info->headset_status?"in":"out");
 315
 316         if(headset_info->heatset_irq_working == WAIT && headset_info->headset_status == HEADSET_IN)
 317         {
 318                 printk("wait for codec\n");
 319                 headset_info->heatset_irq_working = IDLE;
 320                 headset_info->headset_status = HEADSET_OUT;
 321
 322                 free_irq(headset_info->irq[HEADSET],NULL);
 323                 msleep(100);
 324                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 325                         headset_info->irq_type[HEADSET] = IRQF_TRIGGER_HIGH|IRQF_ONESHOT;
 326                 else
 327                         headset_info->irq_type[HEADSET] = IRQF_TRIGGER_LOW|IRQF_ONESHOT;
 328                 if(request_threaded_irq(headset_info->irq[HEADSET], NULL,headset_interrupt, headset_info->irq_type[HEADSET]|IRQF_NO_SUSPEND, "headset_input", NULL) < 0)
 329                         printk("headset request_threaded_irq error\n");
 330                 return;
 331         }
 332 /*
 333         if(pdata->headset_in_type == HEADSET_IN_HIGH && headset_info->headset_status == HEADSET_IN)
 334                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_FALLING);
 335         else if(pdata->headset_in_type == HEADSET_IN_LOW && headset_info->headset_status == HEADSET_IN)
 336                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_RISING);
 337
 338         if(pdata->headset_in_type == HEADSET_IN_HIGH && headset_info->headset_status == HEADSET_OUT)
 339                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_RISING);
 340         else if(pdata->headset_in_type == HEADSET_IN_LOW && headset_info->headset_status == HEADSET_OUT)
 341                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_FALLING);
 342 */
 343 }
 344 //4
 345 static void hook_adc_callback(struct adc_client *client, void *client_param, int result)
 346 {
 347         int level = result;
 348         struct headset_priv *headset = (struct headset_priv *)client_param;
 349         struct rk_headset_pdata *pdata = headset->pdata;
 350         static unsigned int old_status = HOOK_UP;
 351
 352 //      DBG("hook_adc_callback read adc value: %d\n",level);
 353
 354         if(level < 0)
 355         {
 356                 printk("%s:get adc level err = %d!\n",__FUNCTION__,level);
 357                 return;
 358         }
 359
 360         if(headset->headset_status == HEADSET_OUT
 361                 || headset->heatset_irq_working == BUSY
 362                 || headset->heatset_irq_working == WAIT
 363                 || pdata->headset_in_type?gpio_get_value(pdata->Headset_gpio) == 0:gpio_get_value(pdata->Headset_gpio) > 0)
 364         {
 365                 DBG("Headset is out or waiting for headset is in or out,after same time check HOOK key\n");
 366                 return;
 367         }
 368
 369         old_status = headset->hook_status;
 370         if(level < HOOK_LEVEL_LOW && level >= 0)
 371                 headset->hook_status = HOOK_DOWN;
 372         else if(level > HOOK_LEVEL_HIGH && level < HOOK_DEFAULT_VAL)
 373                 headset->hook_status = HOOK_UP;
 374         else{
 375                 DBG("hook_adc_callback read adc value.........outside showly....: %d\n",level);
 376                 del_timer(&headset->hook_timer);
 377                 mod_timer(&headset->hook_timer, jiffies + msecs_to_jiffies(500));
 378                 return;
 379         }
 380
 381         if(old_status == headset->hook_status)
 382         {
 383         //      DBG("Hook adc read old_status == headset->hook_status hook_time = %d\n",headset->hook_time);
 384                 return;
 385         }
 386
 387         DBG("HOOK status is %s , adc value = %d hook_time = %d\n",headset->hook_status?"down":"up",level,headset->hook_time);
 388         if(headset->headset_status == HEADSET_OUT
 389                 || headset->heatset_irq_working == BUSY
 390                 || headset->heatset_irq_working == WAIT
 391                 || (pdata->headset_in_type?gpio_get_value(pdata->Headset_gpio) == 0:gpio_get_value(pdata->Headset_gpio) > 0))
 392                 DBG("headset is out,HOOK status must discard\n");
 393         else
 394         {
 395                 input_report_key(headset->input_dev,pdata->hook_key_code,headset->hook_status);
 396                 input_sync(headset->input_dev);
 397         }
 398 }
 399 //3
 400 static void hook_timer_callback(unsigned long arg)
 401 {
 402         struct headset_priv *headset = (struct headset_priv *)(arg);
 403 //      DBG("hook_timer_callback\n");
 404         if(headset->headset_status == HEADSET_OUT
 405                 || headset->heatset_irq_working == BUSY
 406                 || headset->heatset_irq_working == WAIT)
 407                 return;
 408         adc_async_read(headset->client);
 409         mod_timer(&headset->hook_timer, jiffies + msecs_to_jiffies(headset->hook_time));
 410 }
 411
 412 static ssize_t h2w_print_name(struct switch_dev *sdev, char *buf)
 413 {
 414         return sprintf(buf, "Headset\n");
 415 }
 416
 417 #ifdef CONFIG_HAS_EARLYSUSPEND
 418 static void headset_early_resume(struct early_suspend *h)
 419 {
 420         schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(10));
 421         //DBG(">>>>>headset_early_resume\n");
 422 }
 423
 424 static struct early_suspend hs_early_suspend;
 425 #endif
 426
 427 static int rk_Hskey_open(struct input_dev *dev)
 428 {
 429         //struct rk28_adckey *adckey = input_get_drvdata(dev);
 430 //      DBG("===========rk_Hskey_open===========\n");
 431         return 0;
 432 }
 433
 434 static void rk_Hskey_close(struct input_dev *dev)
 435 {
 436 //      DBG("===========rk_Hskey_close===========\n");
 437 //      struct rk28_adckey *adckey = input_get_drvdata(dev);
 438
 439 }
 440
 441 static int rockchip_headsetobserve_probe(struct platform_device *pdev)
 442 {
 443         int ret;
 444         struct headset_priv *headset;
 445         struct rk_headset_pdata *pdata;
 446
 447         headset = kzalloc(sizeof(struct headset_priv), GFP_KERNEL);
 448         if (headset == NULL) {
 449                 dev_err(&pdev->dev, "failed to allocate driver data\n");
 450                 return -ENOMEM;
 451         }
 452         headset_info = headset;
 453         headset->pdata = pdev->dev.platform_data;
 454         pdata = headset->pdata;
 455         headset->headset_status = HEADSET_OUT;
 456         headset->heatset_irq_working = IDLE;
 457         headset->hook_status = HOOK_UP;
 458         headset->hook_time = HOOK_ADC_SAMPLE_TIME;
 459         headset->cur_headset_status = 0;
 460         headset->sdev.name = "h2w";
 461         headset->sdev.print_name = h2w_print_name;
 462         ret = switch_dev_register(&headset->sdev);
 463         if (ret < 0)
 464                 goto failed_free;
 465
 466 //      mutex_init(&headset->mutex_lock[HEADSET]);
 467 //      mutex_init(&headset->mutex_lock[HOOK]);
 468         wake_lock_init(&headset->headset_on_wake, WAKE_LOCK_SUSPEND, "headset_on_wake");
 469         INIT_DELAYED_WORK(&headset->h_delayed_work[HEADSET], headsetobserve_work);
 470
 471         headset->isMic = 0;
 472 //------------------------------------------------------------------
 473         // Create and register the input driver.
 474         headset->input_dev = input_allocate_device();
 475         if (!headset->input_dev) {
 476                 dev_err(&pdev->dev, "failed to allocate input device\n");
 477                 ret = -ENOMEM;
 478                 goto failed_free;
 479         }
 480         headset->input_dev->name = pdev->name;
 481         headset->input_dev->open = rk_Hskey_open;
 482         headset->input_dev->close = rk_Hskey_close;
 483         headset->input_dev->dev.parent = &pdev->dev;
 484         //input_dev->phys = KEY_PHYS_NAME;
 485         headset->input_dev->id.vendor = 0x0001;
 486         headset->input_dev->id.product = 0x0001;
 487         headset->input_dev->id.version = 0x0100;
 488         // Register the input device
 489         ret = input_register_device(headset->input_dev);
 490         if (ret) {
 491                 dev_err(&pdev->dev, "failed to register input device\n");
 492                 goto failed_free_dev;
 493         }
 494
 495         input_set_capability(headset->input_dev, EV_KEY, pdata->hook_key_code);
 496 //------------------------------------------------------------------
 497         if (pdata->Headset_gpio) {
 498                 ret = pdata->headset_io_init(pdata->Headset_gpio, pdata->headset_gpio_info.iomux_name, pdata->headset_gpio_info.iomux_mode);
 499                 if (ret)
 500                         goto failed_free;
 501
 502                 headset->irq[HEADSET] = gpio_to_irq(pdata->Headset_gpio);
 503
 504                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 505                         headset->irq_type[HEADSET] = IRQF_TRIGGER_HIGH|IRQF_ONESHOT;
 506                 else
 507                         headset->irq_type[HEADSET] = IRQF_TRIGGER_LOW|IRQF_ONESHOT;
 508                 ret = request_threaded_irq(headset->irq[HEADSET], NULL,headset_interrupt, headset->irq_type[HEADSET]|IRQF_NO_SUSPEND, "headset_input", NULL);
 509                 if (ret)
 510                         goto failed_free;
 511                 enable_irq_wake(headset->irq[HEADSET]);
 512         }
 513         else
 514                 goto failed_free;
 515 //------------------------------------------------------------------
 516         if(pdata->Hook_adc_chn>=0 && 3>=pdata->Hook_adc_chn)
 517         {
 518                 headset->client = adc_register(pdata->Hook_adc_chn, hook_adc_callback, (void *)headset);
 519                 if(!headset->client) {
 520                         printk("hook adc register error\n");
 521                         ret = -EINVAL;
 522                         goto failed_free;
 523                 }
 524                 setup_timer(&headset->hook_timer,hook_timer_callback, (unsigned long)headset);
 525                 printk("headset adc default value = %d\n",adc_sync_read(headset->client));
 526         }
 527
 528 #ifdef CONFIG_HAS_EARLYSUSPEND
 529         hs_early_suspend.suspend = NULL;
 530         hs_early_suspend.resume = headset_early_resume;
 531         hs_early_suspend.level = ~0x0;
 532         register_early_suspend(&hs_early_suspend);
 533 #endif
 534
 535         return 0;
 536
 537 failed_free_dev:
 538         platform_set_drvdata(pdev, NULL);
 539         input_free_device(headset->input_dev);
 540 failed_free:
 541         dev_err(&pdev->dev, "failed to headset probe\n");
 542         kfree(headset);
 543         return ret;
 544 }
 545
 546 static int rockchip_headsetobserve_suspend(struct platform_device *pdev, pm_message_t state)
 547 {
 548         DBG("%s----%d\n",__FUNCTION__,__LINE__);
 549 //      disable_irq(headset_info->irq[HEADSET]);
 550         del_timer(&headset_info->hook_timer);
 551         return 0;
 552 }
 553
 554 static int rockchip_headsetobserve_resume(struct platform_device *pdev)
 555 {
 556         DBG("%s----%d\n",__FUNCTION__,__LINE__);
 557 //      enable_irq(headset_info->irq[HEADSET]);
 558         if(headset_info->isMic)
 559                 mod_timer(&headset_info->hook_timer, jiffies + msecs_to_jiffies(1500));
 560         return 0;
 561 }
 562
 563 static struct platform_driver rockchip_headsetobserve_driver = {
 564         .probe  = rockchip_headsetobserve_probe,
 565         .resume =       rockchip_headsetobserve_resume,
 566         .suspend =      rockchip_headsetobserve_suspend,
 567         .driver = {
 568                 .name   = "rk_headsetdet",
 569                 .owner  = THIS_MODULE,
 570         },
 571 };
 572
 573 static int __init rockchip_headsetobserve_init(void)
 574 {
 575         platform_driver_register(&rockchip_headsetobserve_driver);
 576         return 0;
 577 }
 578 late_initcall(rockchip_headsetobserve_init);
 579 MODULE_DESCRIPTION("Rockchip Headset Driver");
 580 MODULE_LICENSE("GPL");
 581