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         for(i=0; i<3; i++)
 129         {
 130                 level = gpio_get_value(pdata->Headset_gpio);
 131                 if(level < 0)
 132                 {
 133                         printk("%s:get pin level again,pin=%d,i=%d\n",__FUNCTION__,pdata->Headset_gpio,i);
 134                         msleep(1);
 135                         continue;
 136                 }
 137                 else
 138                 break;
 139         }
 140         if(level < 0)
 141         {
 142                 printk("%s:get pin level  err!\n",__FUNCTION__);
 143                 goto out;
 144         }
 145
 146         old_status = headset_info->headset_status;
 147         switch(pdata->headset_in_type)
 148         {
 149         case HEADSET_IN_HIGH:
 150                 if(level > 0)
 151                         headset_info->headset_status = HEADSET_IN;
 152                 else if(level == 0)
 153                         headset_info->headset_status = HEADSET_OUT;
 154                 break;
 155         case HEADSET_IN_LOW:
 156                 if(level == 0)
 157                         headset_info->headset_status = HEADSET_IN;
 158                 else if(level > 0)
 159                         headset_info->headset_status = HEADSET_OUT;
 160                 break;
 161         default:
 162                 DBG("---- ERROR: on headset headset_in_type error -----\n");
 163                 break;
 164         }
 165         if(old_status == headset_info->headset_status)
 166         {
 167                 DBG("Read Headset IO level old status == now status\n");
 168                 goto out;
 169         }
 170
 171         DBG("(headset in is %s)headset status is %s\n",
 172                 pdata->headset_in_type?"high level":"low level",
 173                 headset_info->headset_status?"in":"out");
 174         if(headset_info->headset_status == HEADSET_IN)
 175         {
 176                 #if 0
 177                 while(1)
 178                 {
 179                         if(adc_sync_read(headset_info->client) > HOOK_DEFAULT_VAL
 180                          || adc_sync_read(headset_info->client) < 0)
 181                         {
 182                                 printk("headset is showly inside\n");
 183                         }
 184                         else
 185                                 break;
 186                         msleep(50);
 187
 188                         if(pdata->headset_in_type == HEADSET_IN_HIGH)
 189                                 old_status = headset_info->headset_status = gpio_get_value(pdata->Headset_gpio)?HEADSET_IN:HEADSET_OUT;
 190                         else
 191                                 old_status = headset_info->headset_status = gpio_get_value(pdata->Headset_gpio)?HEADSET_OUT:HEADSET_IN;
 192                         if(headset_info->headset_status == HEADSET_OUT)
 193                                 goto out1;
 194                         msleep(5);
 195                 }
 196                 #endif
 197                 if(pdata->Hook_adc_chn>=0 && 3>=pdata->Hook_adc_chn)
 198                 {
 199                 // wait for find Hook key
 200                         //#ifdef CONFIG_SND_SOC_RT5625
 201                         CHECK_AGAIN:
 202                         //headset_info->isMic = rt5625_headset_mic_detect(true);
 203                         #ifdef CONFIG_SND_SOC_WM8994
 204                         wm8994_headset_mic_detect(true);
 205                         #endif
 206                         #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 207                         rt3261_headset_mic_detect(true);
 208                         #endif
 209                         //mdelay(400);
 210                         adc_value = adc_sync_read(headset_info->client);
 211                         if(adc_value >= 0 && adc_value < HOOK_LEVEL_LOW)
 212                         {
 213                                 headset_info->isMic= 0;//No microphone
 214                                 #ifdef CONFIG_SND_SOC_WM8994
 215                                 wm8994_headset_mic_detect(false);
 216                                 #endif
 217                                 #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 218                                 rt3261_headset_mic_detect(false);
 219                                 #endif
 220                         }
 221                         else if(adc_value >= HOOK_LEVEL_HIGH)
 222                                 headset_info->isMic = 1;//have mic
 223
 224                         if(headset_info->isMic < 0)
 225                         {
 226                                 printk("codec is error\n");
 227                                 headset_info->heatset_irq_working = WAIT;
 228                                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 229                                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_LOW|IRQF_ONESHOT);
 230                                 else
 231                                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_HIGH|IRQF_ONESHOT);
 232                                 schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(0));
 233                                 wake_unlock(&headset_info->headset_on_wake);
 234                                 return IRQ_HANDLED;
 235                         }
 236                         //adc_value = adc_sync_read(headset_info->client);
 237                         printk("headset adc value = %d\n",adc_value);
 238                         if(headset_info->isMic) {
 239                                 if(adc_value > HOOK_DEFAULT_VAL || adc_value < HOOK_LEVEL_HIGH)
 240                                         goto CHECK_AGAIN;
 241                                 mod_timer(&headset_info->hook_timer, jiffies + msecs_to_jiffies(1000));
 242                         }
 243                         //#endif
 244                         headset_info->cur_headset_status = headset_info->isMic ? BIT_HEADSET:BIT_HEADSET_NO_MIC;
 245                 }
 246                 else
 247                 {
 248                         headset_info->isMic= 0;//No microphone
 249                         headset_info->cur_headset_status = BIT_HEADSET_NO_MIC;
 250                 }
 251                 printk("headset->isMic = %d\n",headset_info->isMic);
 252                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 253                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_FALLING);
 254                 else
 255                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_RISING);
 256         }
 257         else if(headset_info->headset_status == HEADSET_OUT)
 258         {
 259                 headset_info->cur_headset_status = ~(BIT_HEADSET|BIT_HEADSET_NO_MIC);
 260                 del_timer(&headset_info->hook_timer);
 261                 if(headset_info->isMic)
 262                 {
 263                         headset_info->hook_status = HOOK_UP;
 264                         #ifdef CONFIG_SND_SOC_WM8994
 265                         //rt5625_headset_mic_detect(false);
 266                         wm8994_headset_mic_detect(false);
 267                         #endif
 268                         #if defined (CONFIG_SND_SOC_RT3261) || defined (CONFIG_SND_SOC_RT3224)
 269                         rt3261_headset_mic_detect(false);
 270                         #endif
 271                 }
 272                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 273                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_RISING);
 274                 else
 275                         irq_set_irq_type(headset_info->irq[HEADSET],IRQF_TRIGGER_FALLING);
 276         }
 277
 278         rk28_send_wakeup_key();
 279         switch_set_state(&headset_info->sdev, headset_info->cur_headset_status);
 280         DBG("headset notice android headset status = %d\n",headset_info->cur_headset_status);
 281
 282 //      schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(0));
 283 out:
 284         headset_info->heatset_irq_working = IDLE;
 285         wake_unlock(&headset_info->headset_on_wake);
 286         return IRQ_HANDLED;
 287 }
 288
 289 static int headset_change_irqtype(int type,unsigned int irq_type)
 290 {
 291         int ret = 0;
 292         free_irq(headset_info->irq[type],NULL);
 293
 294         DBG("%s: type is %s irqtype is %s\n",__FUNCTION__,      type?"hook":"headset",(irq_type == IRQF_TRIGGER_RISING)?"RISING":"FALLING");
 295 //      DBG("%s: type is %s irqtype is %s\n",__FUNCTION__,      type?"hook":"headset",(irq_type == IRQF_TRIGGER_LOW)?"LOW":"HIGH");
 296         switch(type)
 297         {
 298         case HEADSET:
 299                 ret = request_threaded_irq(headset_info->irq[type],NULL, headset_interrupt, irq_type, "headset_input", NULL);
 300                 if (ret<0)
 301                         DBG("headset_change_irqtype: request irq failed\n");
 302                 break;
 303         default:
 304                 ret = -1;
 305                 break;
 306         }
 307         return ret;
 308 }
 309 //2
 310 static void headsetobserve_work(struct work_struct *work)
 311 {
 312         struct rk_headset_pdata *pdata = headset_info->pdata;
 313         DBG("In the headsetobserve_work headset_status is %s\n",headset_info->headset_status?"in":"out");
 314
 315         if(headset_info->heatset_irq_working == WAIT && headset_info->headset_status == HEADSET_IN)
 316         {
 317                 printk("wait for codec\n");
 318                 headset_info->heatset_irq_working = IDLE;
 319                 headset_info->headset_status = HEADSET_OUT;
 320
 321                 free_irq(headset_info->irq[HEADSET],NULL);
 322                 msleep(100);
 323                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 324                         headset_info->irq_type[HEADSET] = IRQF_TRIGGER_HIGH|IRQF_ONESHOT;
 325                 else
 326                         headset_info->irq_type[HEADSET] = IRQF_TRIGGER_LOW|IRQF_ONESHOT;
 327                 if(request_threaded_irq(headset_info->irq[HEADSET], NULL,headset_interrupt, headset_info->irq_type[HEADSET]|IRQF_NO_SUSPEND, "headset_input", NULL) < 0)
 328                         printk("headset request_threaded_irq error\n");
 329                 return;
 330         }
 331 /*
 332         if(pdata->headset_in_type == HEADSET_IN_HIGH && headset_info->headset_status == HEADSET_IN)
 333                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_FALLING);
 334         else if(pdata->headset_in_type == HEADSET_IN_LOW && headset_info->headset_status == HEADSET_IN)
 335                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_RISING);
 336
 337         if(pdata->headset_in_type == HEADSET_IN_HIGH && headset_info->headset_status == HEADSET_OUT)
 338                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_RISING);
 339         else if(pdata->headset_in_type == HEADSET_IN_LOW && headset_info->headset_status == HEADSET_OUT)
 340                 headset_change_irqtype(HEADSET,IRQF_TRIGGER_FALLING);
 341 */
 342 }
 343 //4
 344 static void hook_adc_callback(struct adc_client *client, void *client_param, int result)
 345 {
 346         int level = result;
 347         struct headset_priv *headset = (struct headset_priv *)client_param;
 348         struct rk_headset_pdata *pdata = headset->pdata;
 349         static unsigned int old_status = HOOK_UP;
 350
 351 //      DBG("hook_adc_callback read adc value: %d\n",level);
 352
 353         if(level < 0)
 354         {
 355                 printk("%s:get adc level err = %d!\n",__FUNCTION__,level);
 356                 return;
 357         }
 358
 359         if(headset->headset_status == HEADSET_OUT
 360                 || headset->heatset_irq_working == BUSY
 361                 || headset->heatset_irq_working == WAIT
 362                 || pdata->headset_in_type?gpio_get_value(pdata->Headset_gpio) == 0:gpio_get_value(pdata->Headset_gpio) > 0)
 363         {
 364                 DBG("Headset is out or waiting for headset is in or out,after same time check HOOK key\n");
 365                 return;
 366         }
 367
 368         old_status = headset->hook_status;
 369         if(level < HOOK_LEVEL_LOW && level >= 0)
 370                 headset->hook_status = HOOK_DOWN;
 371         else if(level > HOOK_LEVEL_HIGH && level < HOOK_DEFAULT_VAL)
 372                 headset->hook_status = HOOK_UP;
 373         else{
 374                 DBG("hook_adc_callback read adc value.........outside showly....: %d\n",level);
 375                 del_timer(&headset->hook_timer);
 376                 mod_timer(&headset->hook_timer, jiffies + msecs_to_jiffies(500));
 377                 return;
 378         }
 379
 380         if(old_status == headset->hook_status)
 381         {
 382         //      DBG("Hook adc read old_status == headset->hook_status hook_time = %d\n",headset->hook_time);
 383                 return;
 384         }
 385
 386         DBG("HOOK status is %s , adc value = %d hook_time = %d\n",headset->hook_status?"down":"up",level,headset->hook_time);
 387         if(headset->headset_status == HEADSET_OUT
 388                 || headset->heatset_irq_working == BUSY
 389                 || headset->heatset_irq_working == WAIT
 390                 || (pdata->headset_in_type?gpio_get_value(pdata->Headset_gpio) == 0:gpio_get_value(pdata->Headset_gpio) > 0))
 391                 DBG("headset is out,HOOK status must discard\n");
 392         else
 393         {
 394                 input_report_key(headset->input_dev,pdata->hook_key_code,headset->hook_status);
 395                 input_sync(headset->input_dev);
 396         }
 397 }
 398 //3
 399 static void hook_timer_callback(unsigned long arg)
 400 {
 401         struct headset_priv *headset = (struct headset_priv *)(arg);
 402 //      DBG("hook_timer_callback\n");
 403         if(headset->headset_status == HEADSET_OUT
 404                 || headset->heatset_irq_working == BUSY
 405                 || headset->heatset_irq_working == WAIT)
 406                 return;
 407         adc_async_read(headset->client);
 408         mod_timer(&headset->hook_timer, jiffies + msecs_to_jiffies(headset->hook_time));
 409 }
 410
 411 static ssize_t h2w_print_name(struct switch_dev *sdev, char *buf)
 412 {
 413         return sprintf(buf, "Headset\n");
 414 }
 415
 416 #ifdef CONFIG_HAS_EARLYSUSPEND
 417 static void headset_early_resume(struct early_suspend *h)
 418 {
 419         schedule_delayed_work(&headset_info->h_delayed_work[HEADSET], msecs_to_jiffies(10));
 420         //DBG(">>>>>headset_early_resume\n");
 421 }
 422
 423 static struct early_suspend hs_early_suspend;
 424 #endif
 425
 426 static int rk_Hskey_open(struct input_dev *dev)
 427 {
 428         //struct rk28_adckey *adckey = input_get_drvdata(dev);
 429 //      DBG("===========rk_Hskey_open===========\n");
 430         return 0;
 431 }
 432
 433 static void rk_Hskey_close(struct input_dev *dev)
 434 {
 435 //      DBG("===========rk_Hskey_close===========\n");
 436 //      struct rk28_adckey *adckey = input_get_drvdata(dev);
 437
 438 }
 439
 440 static int rockchip_headsetobserve_probe(struct platform_device *pdev)
 441 {
 442         int ret;
 443         struct headset_priv *headset;
 444         struct rk_headset_pdata *pdata;
 445
 446         headset = kzalloc(sizeof(struct headset_priv), GFP_KERNEL);
 447         if (headset == NULL) {
 448                 dev_err(&pdev->dev, "failed to allocate driver data\n");
 449                 return -ENOMEM;
 450         }
 451         headset_info = headset;
 452         headset->pdata = pdev->dev.platform_data;
 453         pdata = headset->pdata;
 454         headset->headset_status = HEADSET_OUT;
 455         headset->heatset_irq_working = IDLE;
 456         headset->hook_status = HOOK_UP;
 457         headset->hook_time = HOOK_ADC_SAMPLE_TIME;
 458         headset->cur_headset_status = 0;
 459         headset->sdev.name = "h2w";
 460         headset->sdev.print_name = h2w_print_name;
 461         ret = switch_dev_register(&headset->sdev);
 462         if (ret < 0)
 463                 goto failed_free;
 464
 465 //      mutex_init(&headset->mutex_lock[HEADSET]);
 466 //      mutex_init(&headset->mutex_lock[HOOK]);
 467         wake_lock_init(&headset->headset_on_wake, WAKE_LOCK_SUSPEND, "headset_on_wake");
 468         INIT_DELAYED_WORK(&headset->h_delayed_work[HEADSET], headsetobserve_work);
 469
 470         headset->isMic = 0;
 471 //------------------------------------------------------------------
 472         // Create and register the input driver.
 473         headset->input_dev = input_allocate_device();
 474         if (!headset->input_dev) {
 475                 dev_err(&pdev->dev, "failed to allocate input device\n");
 476                 ret = -ENOMEM;
 477                 goto failed_free;
 478         }
 479         headset->input_dev->name = pdev->name;
 480         headset->input_dev->open = rk_Hskey_open;
 481         headset->input_dev->close = rk_Hskey_close;
 482         headset->input_dev->dev.parent = &pdev->dev;
 483         //input_dev->phys = KEY_PHYS_NAME;
 484         headset->input_dev->id.vendor = 0x0001;
 485         headset->input_dev->id.product = 0x0001;
 486         headset->input_dev->id.version = 0x0100;
 487         // Register the input device
 488         ret = input_register_device(headset->input_dev);
 489         if (ret) {
 490                 dev_err(&pdev->dev, "failed to register input device\n");
 491                 goto failed_free_dev;
 492         }
 493
 494         input_set_capability(headset->input_dev, EV_KEY, pdata->hook_key_code);
 495 //------------------------------------------------------------------
 496         if (pdata->Headset_gpio) {
 497                 ret = pdata->headset_io_init(pdata->Headset_gpio, pdata->headset_gpio_info.iomux_name, pdata->headset_gpio_info.iomux_mode);
 498                 if (ret)
 499                         goto failed_free;
 500
 501                 headset->irq[HEADSET] = gpio_to_irq(pdata->Headset_gpio);
 502
 503                 if(pdata->headset_in_type == HEADSET_IN_HIGH)
 504                         headset->irq_type[HEADSET] = IRQF_TRIGGER_HIGH|IRQF_ONESHOT;
 505                 else
 506                         headset->irq_type[HEADSET] = IRQF_TRIGGER_LOW|IRQF_ONESHOT;
 507                 ret = request_threaded_irq(headset->irq[HEADSET], NULL,headset_interrupt, headset->irq_type[HEADSET]|IRQF_NO_SUSPEND, "headset_input", NULL);
 508                 if (ret)
 509                         goto failed_free;
 510                 enable_irq_wake(headset->irq[HEADSET]);
 511         }
 512         else
 513                 goto failed_free;
 514 //------------------------------------------------------------------
 515         if(pdata->Hook_adc_chn>=0 && 3>=pdata->Hook_adc_chn)
 516         {
 517                 headset->client = adc_register(pdata->Hook_adc_chn, hook_adc_callback, (void *)headset);
 518                 if(!headset->client) {
 519                         printk("hook adc register error\n");
 520                         ret = -EINVAL;
 521                         goto failed_free;
 522                 }
 523                 setup_timer(&headset->hook_timer,hook_timer_callback, (unsigned long)headset);
 524                 printk("headset adc default value = %d\n",adc_sync_read(headset->client));
 525         }
 526
 527 #ifdef CONFIG_HAS_EARLYSUSPEND
 528         hs_early_suspend.suspend = NULL;
 529         hs_early_suspend.resume = headset_early_resume;
 530         hs_early_suspend.level = ~0x0;
 531         register_early_suspend(&hs_early_suspend);
 532 #endif
 533
 534         return 0;
 535
 536 failed_free_dev:
 537         platform_set_drvdata(pdev, NULL);
 538         input_free_device(headset->input_dev);
 539 failed_free:
 540         dev_err(&pdev->dev, "failed to headset probe\n");
 541         kfree(headset);
 542         return ret;
 543 }
 544
 545 static int rockchip_headsetobserve_suspend(struct platform_device *pdev, pm_message_t state)
 546 {
 547         DBG("%s----%d\n",__FUNCTION__,__LINE__);
 548 //      disable_irq(headset_info->irq[HEADSET]);
 549         del_timer(&headset_info->hook_timer);
 550         return 0;
 551 }
 552
 553 static int rockchip_headsetobserve_resume(struct platform_device *pdev)
 554 {
 555         DBG("%s----%d\n",__FUNCTION__,__LINE__);
 556 //      enable_irq(headset_info->irq[HEADSET]);
 557         if(headset_info->isMic)
 558                 mod_timer(&headset_info->hook_timer, jiffies + msecs_to_jiffies(1500));
 559         return 0;
 560 }
 561
 562 static struct platform_driver rockchip_headsetobserve_driver = {
 563         .probe  = rockchip_headsetobserve_probe,
 564         .resume =       rockchip_headsetobserve_resume,
 565         .suspend =      rockchip_headsetobserve_suspend,
 566         .driver = {
 567                 .name   = "rk_headsetdet",
 568                 .owner  = THIS_MODULE,
 569         },
 570 };
 571
 572 static int __init rockchip_headsetobserve_init(void)
 573 {
 574         platform_driver_register(&rockchip_headsetobserve_driver);
 575         return 0;
 576 }
 577 late_initcall(rockchip_headsetobserve_init);
 578 MODULE_DESCRIPTION("Rockchip Headset Driver");
 579 MODULE_LICENSE("GPL");
 580