drivers/staging/intel_sst/intelmid.c

   1 /*
   2  *   intelmid.c - Intel Sound card driver for MID
   3  *
   4  *  Copyright (C) 2008-10 Intel Corp
   5  *  Authors:    Harsha Priya <priya.harsha@intel.com>
   6  *              Vinod Koul <vinod.koul@intel.com>
   7  *              Dharageswari R <dharageswari.r@intel.com>
   8  *              KP Jeeja <jeeja.kp@intel.com>
   9  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License as published by
  13  *  the Free Software Foundation; version 2 of the License.
  14  *
  15  *  This program is distributed in the hope that it will be useful, but
  16  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  *  General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License along
  21  *  with this program; if not, write to the Free Software Foundation, Inc.,
  22  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  23  *
  24  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  25  * ALSA driver for Intel MID sound card chipset
  26  */
  27
  28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  29
  30 #include <linux/slab.h>
  31 #include <linux/io.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/interrupt.h>
  34 #include <linux/sched.h>
  35 #include <linux/firmware.h>
  36 #include <sound/control.h>
  37 #include <asm/mrst.h>
  38 #include <sound/pcm.h>
  39 #include "jack.h"
  40 #include <sound/pcm_params.h>
  41 #include <sound/initval.h>
  42 #include "intel_sst.h"
  43 #include "intel_sst_ioctl.h"
  44 #include "intel_sst_fw_ipc.h"
  45 #include "intel_sst_common.h"
  46 #include "intelmid_snd_control.h"
  47 #include "intelmid.h"
  48
  49 MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
  50 MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
  51 MODULE_AUTHOR("Dharageswari R <dharageswari.r@intel.com>");
  52 MODULE_AUTHOR("KP Jeeja <jeeja.kp@intel.com>");
  53 MODULE_DESCRIPTION("Intel MAD Sound card driver");
  54 MODULE_LICENSE("GPL v2");
  55 MODULE_SUPPORTED_DEVICE("{Intel,Intel_MAD}");
  56
  57
  58 static int card_index = SNDRV_DEFAULT_IDX1;/* Index 0-MAX */
  59 static char *card_id = SNDRV_DEFAULT_STR1;      /* ID for this card */
  60
  61 module_param(card_index, int, 0444);
  62 MODULE_PARM_DESC(card_index, "Index value for INTELMAD soundcard.");
  63 module_param(card_id, charp, 0444);
  64 MODULE_PARM_DESC(card_id, "ID string for INTELMAD soundcard.");
  65
  66 int     sst_card_vendor_id;
  67 int intelmid_audio_interrupt_enable;/*checkpatch fix*/
  68
  69 /* Data path functionalities */
  70 static struct snd_pcm_hardware snd_intelmad_stream = {
  71         .info = (SNDRV_PCM_INFO_INTERLEAVED |
  72                         SNDRV_PCM_INFO_DOUBLE |
  73                         SNDRV_PCM_INFO_PAUSE |
  74                         SNDRV_PCM_INFO_RESUME |
  75                         SNDRV_PCM_INFO_MMAP|
  76                         SNDRV_PCM_INFO_MMAP_VALID |
  77                         SNDRV_PCM_INFO_BLOCK_TRANSFER |
  78                         SNDRV_PCM_INFO_SYNC_START),
  79         .formats = (SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_U16 |
  80                         SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_U24 |
  81                         SNDRV_PCM_FMTBIT_S32 | SNDRV_PCM_FMTBIT_U32),
  82         .rates = (SNDRV_PCM_RATE_8000|
  83                         SNDRV_PCM_RATE_44100 |
  84                         SNDRV_PCM_RATE_48000),
  85         .rate_min = MIN_RATE,
  86
  87         .rate_max = MAX_RATE,
  88         .channels_min = MIN_CHANNEL,
  89         .channels_max = MAX_CHANNEL_AMIC,
  90         .buffer_bytes_max = MAX_BUFFER,
  91         .period_bytes_min = MIN_PERIOD_BYTES,
  92         .period_bytes_max = MAX_PERIOD_BYTES,
  93         .periods_min = MIN_PERIODS,
  94         .periods_max = MAX_PERIODS,
  95         .fifo_size = FIFO_SIZE,
  96 };
  97
  98
  99 /**
 100  * snd_intelmad_pcm_trigger - stream activities are handled here
 101  *
 102  * @substream:substream for which the stream function is called
 103  * @cmd:the stream commamd that requested from upper layer
 104  *
 105  * This function is called whenever an a stream activity is invoked
 106  */
 107 static int snd_intelmad_pcm_trigger(struct snd_pcm_substream *substream,
 108                                         int cmd)
 109 {
 110         int ret_val = 0, str_id;
 111         struct snd_intelmad *intelmaddata;
 112         struct mad_stream_pvt *stream;
 113         struct intel_sst_pcm_control *sst_ops;
 114
 115         WARN_ON(!substream);
 116
 117         intelmaddata = snd_pcm_substream_chip(substream);
 118         stream = substream->runtime->private_data;
 119
 120         WARN_ON(!intelmaddata->sstdrv_ops);
 121         WARN_ON(!intelmaddata->sstdrv_ops->scard_ops);
 122         sst_ops  = intelmaddata->sstdrv_ops->pcm_control;
 123         str_id = stream->stream_info.str_id;
 124
 125         switch (cmd) {
 126         case SNDRV_PCM_TRIGGER_START:
 127                 pr_debug("Trigger Start\n");
 128                 ret_val = sst_ops->device_control(SST_SND_START, &str_id);
 129                 if (ret_val)
 130                         return ret_val;
 131                 stream->stream_status = RUNNING;
 132                 stream->substream = substream;
 133                 break;
 134         case SNDRV_PCM_TRIGGER_STOP:
 135                 pr_debug("in stop\n");
 136                 ret_val = sst_ops->device_control(SST_SND_DROP, &str_id);
 137                 if (ret_val)
 138                         return ret_val;
 139                 stream->stream_status = DROPPED;
 140                 break;
 141         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 142                 pr_debug("in pause\n");
 143                 ret_val = sst_ops->device_control(SST_SND_PAUSE, &str_id);
 144                 if (ret_val)
 145                         return ret_val;
 146                 stream->stream_status = PAUSED;
 147                 break;
 148         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 149                 pr_debug("in pause release\n");
 150                 ret_val = sst_ops->device_control(SST_SND_RESUME, &str_id);
 151                 if (ret_val)
 152                         return ret_val;
 153                 stream->stream_status = RUNNING;
 154                 break;
 155         default:
 156                 return -EINVAL;
 157         }
 158         return ret_val;
 159 }
 160
 161 /**
 162 * snd_intelmad_pcm_prepare- internal preparation before starting a stream
 163 *
 164 * @substream:  substream for which the function is called
 165 *
 166 * This function is called when a stream is started for internal preparation.
 167 */
 168 static int snd_intelmad_pcm_prepare(struct snd_pcm_substream *substream)
 169 {
 170         struct mad_stream_pvt *stream;
 171         int ret_val = 0;
 172         struct snd_intelmad *intelmaddata;
 173
 174         pr_debug("pcm_prepare called\n");
 175
 176         WARN_ON(!substream);
 177         stream = substream->runtime->private_data;
 178         intelmaddata = snd_pcm_substream_chip(substream);
 179         pr_debug("pb cnt = %d cap cnt = %d\n",\
 180                 intelmaddata->playback_cnt,
 181                 intelmaddata->capture_cnt);
 182
 183         if (stream->stream_info.str_id) {
 184                 pr_debug("Prepare called for already set stream\n");
 185                 ret_val = intelmaddata->sstdrv_ops->pcm_control->device_control(
 186                                 SST_SND_DROP, &stream->stream_info.str_id);
 187                 return ret_val;
 188         }
 189
 190          ret_val = snd_intelmad_alloc_stream(substream);
 191         if (ret_val < 0)
 192                 return ret_val;
 193         stream->dbg_cum_bytes = 0;
 194         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 195                         intelmaddata->playback_cnt++;
 196         else
 197                 intelmaddata->capture_cnt++;
 198         /* return back the stream id */
 199         snprintf(substream->pcm->id, sizeof(substream->pcm->id),
 200                         "%d", stream->stream_info.str_id);
 201         pr_debug("stream id to user = %s\n",
 202                         substream->pcm->id);
 203
 204         ret_val = snd_intelmad_init_stream(substream);
 205         if (ret_val)
 206                 return ret_val;
 207         substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
 208         return ret_val;
 209 }
 210
 211 static int snd_intelmad_hw_params(struct snd_pcm_substream *substream,
 212                                     struct snd_pcm_hw_params *hw_params)
 213 {
 214         int ret_val;
 215
 216         pr_debug("snd_intelmad_hw_params called\n");
 217         ret_val = snd_pcm_lib_malloc_pages(substream,
 218                         params_buffer_bytes(hw_params));
 219         memset(substream->runtime->dma_area, 0,
 220                         params_buffer_bytes(hw_params));
 221
 222         return ret_val;
 223 }
 224
 225 static int snd_intelmad_hw_free(struct snd_pcm_substream *substream)
 226 {
 227         pr_debug("snd_intelmad_hw_free called\n");
 228         return snd_pcm_lib_free_pages(substream);
 229 }
 230
 231 /**
 232  * snd_intelmad_pcm_pointer- to send the current buffer pointer processed by hw
 233  *
 234  * @substream:  substream for which the function is called
 235  *
 236  * This function is called by ALSA framework to get the current hw buffer ptr
 237  * when a period is elapsed
 238  */
 239 static snd_pcm_uframes_t snd_intelmad_pcm_pointer
 240                         (struct snd_pcm_substream *substream)
 241 {
 242         /* struct snd_pcm_runtime *runtime = substream->runtime; */
 243         struct mad_stream_pvt *stream;
 244         struct snd_intelmad *intelmaddata;
 245         int ret_val;
 246
 247         WARN_ON(!substream);
 248
 249         intelmaddata = snd_pcm_substream_chip(substream);
 250         stream = substream->runtime->private_data;
 251         if (stream->stream_status == INIT)
 252                 return 0;
 253
 254         ret_val = intelmaddata->sstdrv_ops->pcm_control->device_control(
 255                         SST_SND_BUFFER_POINTER, &stream->stream_info);
 256         if (ret_val) {
 257                 pr_err("error code = 0x%x\n", ret_val);
 258                 return ret_val;
 259         }
 260         pr_debug("samples reported out 0x%llx\n",
 261                         stream->stream_info.buffer_ptr);
 262         pr_debug("Frame bits:: %d period_count :: %d\n",
 263                         (int)substream->runtime->frame_bits,
 264                         (int)substream->runtime->period_size);
 265
 266         return stream->stream_info.buffer_ptr;
 267
 268 }
 269
 270 /**
 271  * snd_intelmad_close- to free parameteres when stream is stopped
 272  *
 273  * @substream:  substream for which the function is called
 274  *
 275  * This function is called by ALSA framework when stream is stopped
 276  */
 277 static int snd_intelmad_close(struct snd_pcm_substream *substream)
 278 {
 279         struct snd_intelmad *intelmaddata;
 280         struct mad_stream_pvt *stream;
 281         int ret_val = 0, str_id;
 282
 283         WARN_ON(!substream);
 284
 285         stream = substream->runtime->private_data;
 286         str_id = stream->stream_info.str_id;
 287
 288         pr_debug("sst: snd_intelmad_close called for %d\n", str_id);
 289         intelmaddata = snd_pcm_substream_chip(substream);
 290
 291         pr_debug("str id = %d\n", stream->stream_info.str_id);
 292         if (stream->stream_info.str_id) {
 293                 /* SST API to actually stop/free the stream */
 294                 ret_val = intelmaddata->sstdrv_ops->pcm_control->close(str_id);
 295                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 296                         intelmaddata->playback_cnt--;
 297                 else
 298                         intelmaddata->capture_cnt--;
 299         }
 300         pr_debug("snd_intelmad_close : pb cnt = %d cap cnt = %d\n",
 301                 intelmaddata->playback_cnt, intelmaddata->capture_cnt);
 302         kfree(substream->runtime->private_data);
 303         return ret_val;
 304 }
 305
 306 /**
 307  * snd_intelmad_open- to set runtime parameters during stream start
 308  *
 309  * @substream:  substream for which the function is called
 310  * @type: audio device type
 311  *
 312  * This function is called by ALSA framework when stream is started
 313  */
 314 static int snd_intelmad_open(struct snd_pcm_substream *substream,
 315                         enum snd_sst_audio_device_type type)
 316 {
 317         struct snd_intelmad *intelmaddata;
 318         struct snd_pcm_runtime *runtime;
 319         struct mad_stream_pvt *stream;
 320
 321         WARN_ON(!substream);
 322
 323         pr_debug("snd_intelmad_open called\n");
 324
 325         intelmaddata = snd_pcm_substream_chip(substream);
 326         runtime = substream->runtime;
 327         /* set the runtime hw parameter with local snd_pcm_hardware struct */
 328         runtime->hw = snd_intelmad_stream;
 329         if (intelmaddata->cpu_id == CPU_CHIP_PENWELL) {
 330                 runtime->hw = snd_intelmad_stream;
 331                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
 332                 runtime->hw.rate_min = MAX_RATE;
 333                 runtime->hw.formats = (SNDRV_PCM_FMTBIT_S24 |
 334                                                 SNDRV_PCM_FMTBIT_U24);
 335                 if (intelmaddata->sstdrv_ops->scard_ops->input_dev_id == AMIC)
 336                         runtime->hw.channels_max = MAX_CHANNEL_AMIC;
 337                 else
 338                         runtime->hw.channels_max = MAX_CHANNEL_DMIC;
 339
 340         }
 341         /* setup the internal datastruture stream pointers based on it being
 342         playback or capture stream */
 343         stream = kzalloc(sizeof(*stream), GFP_KERNEL);
 344         if (!stream)
 345                 return -ENOMEM;
 346         stream->stream_info.str_id = 0;
 347         stream->device = type;
 348         stream->stream_status = INIT;
 349         runtime->private_data = stream;
 350         return snd_pcm_hw_constraint_integer(runtime,
 351                          SNDRV_PCM_HW_PARAM_PERIODS);
 352 }
 353
 354 static int snd_intelmad_headset_open(struct snd_pcm_substream *substream)
 355 {
 356         return snd_intelmad_open(substream, SND_SST_DEVICE_HEADSET);
 357 }
 358
 359 static int snd_intelmad_ihf_open(struct snd_pcm_substream *substream)
 360 {
 361         return snd_intelmad_open(substream, SND_SST_DEVICE_IHF);
 362 }
 363
 364 static int snd_intelmad_vibra_open(struct snd_pcm_substream *substream)
 365 {
 366         return snd_intelmad_open(substream, SND_SST_DEVICE_VIBRA);
 367 }
 368
 369 static int snd_intelmad_haptic_open(struct snd_pcm_substream *substream)
 370 {
 371         return snd_intelmad_open(substream, SND_SST_DEVICE_HAPTIC);
 372 }
 373
 374 static struct snd_pcm_ops snd_intelmad_headset_ops = {
 375         .open = snd_intelmad_headset_open,
 376         .close = snd_intelmad_close,
 377         .ioctl = snd_pcm_lib_ioctl,
 378         .hw_params = snd_intelmad_hw_params,
 379         .hw_free = snd_intelmad_hw_free,
 380         .prepare = snd_intelmad_pcm_prepare,
 381         .trigger = snd_intelmad_pcm_trigger,
 382         .pointer = snd_intelmad_pcm_pointer,
 383 };
 384
 385 static struct snd_pcm_ops snd_intelmad_ihf_ops = {
 386         .open = snd_intelmad_ihf_open,
 387         .close = snd_intelmad_close,
 388         .ioctl = snd_pcm_lib_ioctl,
 389         .hw_params = snd_intelmad_hw_params,
 390         .hw_free = snd_intelmad_hw_free,
 391         .prepare = snd_intelmad_pcm_prepare,
 392         .trigger = snd_intelmad_pcm_trigger,
 393         .pointer = snd_intelmad_pcm_pointer,
 394 };
 395
 396 static struct snd_pcm_ops snd_intelmad_vibra_ops = {
 397         .open = snd_intelmad_vibra_open,
 398         .close = snd_intelmad_close,
 399         .ioctl = snd_pcm_lib_ioctl,
 400         .hw_params = snd_intelmad_hw_params,
 401         .hw_free = snd_intelmad_hw_free,
 402         .prepare = snd_intelmad_pcm_prepare,
 403         .trigger = snd_intelmad_pcm_trigger,
 404         .pointer = snd_intelmad_pcm_pointer,
 405 };
 406
 407 static struct snd_pcm_ops snd_intelmad_haptic_ops = {
 408         .open = snd_intelmad_haptic_open,
 409         .close = snd_intelmad_close,
 410         .ioctl = snd_pcm_lib_ioctl,
 411         .hw_params = snd_intelmad_hw_params,
 412         .hw_free = snd_intelmad_hw_free,
 413         .prepare = snd_intelmad_pcm_prepare,
 414         .trigger = snd_intelmad_pcm_trigger,
 415         .pointer = snd_intelmad_pcm_pointer,
 416 };
 417
 418 static struct snd_pcm_ops snd_intelmad_capture_ops = {
 419         .open = snd_intelmad_headset_open,
 420         .close = snd_intelmad_close,
 421         .ioctl = snd_pcm_lib_ioctl,
 422         .hw_params = snd_intelmad_hw_params,
 423         .hw_free = snd_intelmad_hw_free,
 424         .prepare = snd_intelmad_pcm_prepare,
 425         .trigger = snd_intelmad_pcm_trigger,
 426         .pointer = snd_intelmad_pcm_pointer,
 427 };
 428
 429
 430 /**
 431  * snd_intelmad_intr_handler- interrupt handler
 432  *
 433  * @irq :  irq number of the interrupt received
 434  * @dev: device context
 435  *
 436  * This function is called when an interrupt is raised at the sound card
 437  */
 438 static irqreturn_t snd_intelmad_intr_handler(int irq, void *dev)
 439 {
 440         struct snd_intelmad *intelmaddata =
 441                         (struct snd_intelmad *)dev;
 442         u8 intsts;
 443
 444         memcpy_fromio(&intsts,
 445                         ((void *)(intelmaddata->int_base)),
 446                         sizeof(u8));
 447         intelmaddata->mad_jack_msg.intsts = intsts;
 448         intelmaddata->mad_jack_msg.intelmaddata = intelmaddata;
 449
 450         queue_work(intelmaddata->mad_jack_wq, &intelmaddata->mad_jack_msg.wq);
 451
 452         return IRQ_HANDLED;
 453 }
 454
 455 void sst_mad_send_jack_report(struct snd_jack *jack,
 456                                 int buttonpressevent , int status)
 457 {
 458
 459         if (!jack) {
 460                 pr_debug("MAD error jack empty\n");
 461
 462         } else {
 463                 pr_debug("MAD send jack report for = %d!!!\n", status);
 464                 pr_debug("MAD send jack report %d\n", jack->type);
 465                 snd_jack_report(jack, status);
 466
 467                 /*button pressed and released */
 468                 if (buttonpressevent)
 469                         snd_jack_report(jack, 0);
 470                 pr_debug("MAD sending jack report Done !!!\n");
 471         }
 472
 473
 474
 475 }
 476
 477 void sst_mad_jackdetection_fs(u8 intsts , struct snd_intelmad *intelmaddata)
 478 {
 479         struct snd_jack *jack = NULL;
 480         unsigned int present = 0, jack_event_flag = 0, buttonpressflag = 0;
 481         struct sc_reg_access sc_access[] = {
 482                                 {0x187, 0x00, MASK7},
 483                                 {0x188, 0x10, MASK4},
 484                                 {0x18b, 0x10, MASK4},
 485         };
 486
 487         struct sc_reg_access sc_access_write[] = {
 488                                 {0x198, 0x00, 0x0},
 489         };
 490
 491         if (intsts & 0x4) {
 492
 493                 if (!(intelmid_audio_interrupt_enable)) {
 494                         pr_debug("Audio interrupt enable\n");
 495                         sst_sc_reg_access(sc_access, PMIC_READ_MODIFY, 3);
 496
 497                         sst_sc_reg_access(sc_access_write, PMIC_WRITE, 1);
 498                         intelmid_audio_interrupt_enable = 1;
 499                         intelmaddata->jack[0].jack_status = 0;
 500                         intelmaddata->jack[1].jack_status = 0;
 501
 502                 }
 503                 /* send headphone detect */
 504                 pr_debug("MAD headphone %d\n", intsts & 0x4);
 505                 jack = &intelmaddata->jack[0].jack;
 506                 present = !(intelmaddata->jack[0].jack_status);
 507                 intelmaddata->jack[0].jack_status = present;
 508                 jack_event_flag = 1;
 509
 510         }
 511
 512         if (intsts & 0x2) {
 513                 /* send short push */
 514                 pr_debug("MAD short push %d\n", intsts & 0x2);
 515                 jack = &intelmaddata->jack[2].jack;
 516                 present = 1;
 517                 jack_event_flag = 1;
 518                 buttonpressflag = 1;
 519         }
 520         if (intsts & 0x1) {
 521                 /* send long push */
 522                 pr_debug("MAD long push %d\n", intsts & 0x1);
 523                 jack = &intelmaddata->jack[3].jack;
 524                 present = 1;
 525                 jack_event_flag = 1;
 526                 buttonpressflag = 1;
 527         }
 528         if (intsts & 0x8) {
 529                 if (!(intelmid_audio_interrupt_enable)) {
 530                         pr_debug("Audio interrupt enable\n");
 531                         sst_sc_reg_access(sc_access, PMIC_READ_MODIFY, 3);
 532
 533                         sst_sc_reg_access(sc_access_write, PMIC_WRITE, 1);
 534                         intelmid_audio_interrupt_enable = 1;
 535                         intelmaddata->jack[0].jack_status = 0;
 536                         intelmaddata->jack[1].jack_status = 0;
 537                 }
 538                 /* send headset detect */
 539                 pr_debug("MAD headset = %d\n", intsts & 0x8);
 540                 jack = &intelmaddata->jack[1].jack;
 541                 present = !(intelmaddata->jack[1].jack_status);
 542                 intelmaddata->jack[1].jack_status = present;
 543                 jack_event_flag = 1;
 544         }
 545
 546         if (jack_event_flag)
 547                 sst_mad_send_jack_report(jack, buttonpressflag, present);
 548 }
 549
 550
 551 void sst_mad_jackdetection_mx(u8 intsts, struct snd_intelmad *intelmaddata)
 552 {
 553         u8 value = 0, jack_prev_state = 0;
 554         struct snd_jack *jack = NULL;
 555         unsigned int present = 0, jack_event_flag = 0, buttonpressflag = 0;
 556         time_t  timediff;
 557         struct sc_reg_access sc_access_read = {0,};
 558         struct snd_pmic_ops *scard_ops;
 559
 560         scard_ops = intelmaddata->sstdrv_ops->scard_ops;
 561
 562         pr_debug("previous value: %x\n", intelmaddata->jack_prev_state);
 563
 564         if (!(intelmid_audio_interrupt_enable)) {
 565                 pr_debug("Audio interrupt enable\n");
 566                 intelmaddata->jack_prev_state = 0xC0;
 567                 intelmid_audio_interrupt_enable = 1;
 568         }
 569
 570         if (intsts & 0x2) {
 571                 jack_prev_state = intelmaddata->jack_prev_state;
 572                 if (intelmaddata->pmic_status == PMIC_INIT) {
 573                         sc_access_read.reg_addr = 0x201;
 574                         sst_sc_reg_access(&sc_access_read, PMIC_READ, 1);
 575                         value = (sc_access_read.value);
 576                         pr_debug("value returned = 0x%x\n", value);
 577                 }
 578
 579                 if (jack_prev_state == 0xc0 && value == 0x40) {
 580                         /*headset detected. */
 581                         pr_debug("MAD headset inserted\n");
 582                         jack = &intelmaddata->jack[1].jack;
 583                         present = 1;
 584                         jack_event_flag = 1;
 585                         intelmaddata->jack[1].jack_status = 1;
 586
 587                 }
 588
 589                 if (jack_prev_state == 0xc0 && value == 0x00) {
 590                         /* headphone  detected. */
 591                         pr_debug("MAD headphone inserted\n");
 592                         jack = &intelmaddata->jack[0].jack;
 593                         present = 1;
 594                         jack_event_flag = 1;
 595
 596                 }
 597
 598                 if (jack_prev_state == 0x40 && value == 0xc0) {
 599                         /*headset  removed*/
 600                         pr_debug("Jack headset status %d\n",
 601                                 intelmaddata->jack[1].jack_status);
 602                         pr_debug("MAD headset removed\n");
 603                         jack = &intelmaddata->jack[1].jack;
 604                         present = 0;
 605                         jack_event_flag = 1;
 606                         intelmaddata->jack[1].jack_status = 0;
 607                 }
 608
 609                 if (jack_prev_state == 0x00 && value == 0xc0) {
 610                         /* headphone  detected. */
 611                         pr_debug("Jack headphone status %d\n",
 612                                         intelmaddata->jack[0].jack_status);
 613                         pr_debug("headphone removed\n");
 614                         jack = &intelmaddata->jack[0].jack;
 615                         present = 0;
 616                         jack_event_flag = 1;
 617                 }
 618
 619                 if (jack_prev_state == 0x40 && value == 0x00) {
 620                         /*button pressed*/
 621                         do_gettimeofday(&intelmaddata->jack[1].buttonpressed);
 622                         pr_debug("MAD button press detected\n");
 623                 }
 624
 625
 626                 if (jack_prev_state == 0x00 && value == 0x40) {
 627                         if (intelmaddata->jack[1].jack_status) {
 628                                 /*button pressed*/
 629                                 do_gettimeofday(
 630                                         &intelmaddata->jack[1].buttonreleased);
 631                                 /*button pressed */
 632                                 pr_debug("Button Released detected\n");
 633                                 timediff = intelmaddata->jack[1].
 634                                         buttonreleased.tv_sec - intelmaddata->
 635                                         jack[1].buttonpressed.tv_sec;
 636                                 buttonpressflag = 1;
 637                                 if (timediff > 1) {
 638                                         pr_debug("long press detected\n");
 639                                         /* send headphone detect/undetect */
 640                                         jack = &intelmaddata->jack[3].jack;
 641                                         present = 1;
 642                                         jack_event_flag = 1;
 643                                 } else {
 644                                         pr_debug("short press detected\n");
 645                                         /* send headphone detect/undetect */
 646                                         jack = &intelmaddata->jack[2].jack;
 647                                         present = 1;
 648                                         jack_event_flag = 1;
 649                                 }
 650                         }
 651
 652                 }
 653                 intelmaddata->jack_prev_state = value;
 654         }
 655         if (jack_event_flag)
 656                 sst_mad_send_jack_report(jack, buttonpressflag, present);
 657 }
 658
 659
 660 void sst_mad_jackdetection_nec(u8 intsts, struct snd_intelmad *intelmaddata)
 661 {
 662         u8 value = 0;
 663         struct snd_jack *jack = NULL;
 664         unsigned int present = 0, jack_event_flag = 0, buttonpressflag = 0;
 665         struct sc_reg_access sc_access_read = {0,};
 666
 667         if (intelmaddata->pmic_status == PMIC_INIT) {
 668                 sc_access_read.reg_addr = 0x132;
 669                 sst_sc_reg_access(&sc_access_read, PMIC_READ, 1);
 670                 value = (sc_access_read.value);
 671                 pr_debug("value returned = 0x%x\n", value);
 672         }
 673         if (intsts & 0x1) {
 674                 pr_debug("headset detected\n");
 675                 /* send headset detect/undetect */
 676                 jack = &intelmaddata->jack[1].jack;
 677                 present = (value == 0x1) ? 1 : 0;
 678                 jack_event_flag = 1;
 679         }
 680         if (intsts & 0x2) {
 681                 pr_debug("headphone detected\n");
 682                 /* send headphone detect/undetect */
 683                 jack = &intelmaddata->jack[0].jack;
 684                 present = (value == 0x2) ? 1 : 0;
 685                 jack_event_flag = 1;
 686         }
 687         if (intsts & 0x4) {
 688                 pr_debug("short push detected\n");
 689                 /* send short push */
 690                 jack = &intelmaddata->jack[2].jack;
 691                 present = 1;
 692                 jack_event_flag = 1;
 693                 buttonpressflag = 1;
 694         }
 695         if (intsts & 0x8) {
 696                 pr_debug("long push detected\n");
 697                 /* send long push */
 698                 jack = &intelmaddata->jack[3].jack;
 699                 present = 1;
 700                 jack_event_flag = 1;
 701                 buttonpressflag = 1;
 702         }
 703
 704         if (jack_event_flag)
 705                 sst_mad_send_jack_report(jack, buttonpressflag, present);
 706
 707
 708 }
 709
 710 void sst_process_mad_jack_detection(struct work_struct *work)
 711 {
 712         u8 intsts;
 713         struct mad_jack_msg_wq *mad_jack_detect =
 714                         container_of(work, struct mad_jack_msg_wq, wq);
 715
 716         struct snd_intelmad *intelmaddata =
 717                         mad_jack_detect->intelmaddata;
 718
 719         intsts = mad_jack_detect->intsts;
 720
 721         switch (intelmaddata->sstdrv_ops->vendor_id) {
 722         case SND_FS:
 723                 sst_mad_jackdetection_fs(intsts , intelmaddata);
 724                 break;
 725         case SND_MX:
 726                 sst_mad_jackdetection_mx(intsts , intelmaddata);
 727                 break;
 728         case SND_NC:
 729                 sst_mad_jackdetection_nec(intsts , intelmaddata);
 730                 break;
 731         }
 732 }
 733
 734
 735 static int __devinit snd_intelmad_register_irq(
 736                                         struct snd_intelmad *intelmaddata)
 737 {
 738         int ret_val;
 739         u32 regbase = AUDINT_BASE, regsize = 8;
 740         char *drv_name;
 741
 742         pr_debug("irq reg done, regbase 0x%x, regsize 0x%x\n",
 743                                         regbase, regsize);
 744         intelmaddata->int_base = ioremap_nocache(regbase, regsize);
 745         if (!intelmaddata->int_base)
 746                 pr_err("Mapping of cache failed\n");
 747         pr_debug("irq = 0x%x\n", intelmaddata->irq);
 748         if (intelmaddata->cpu_id == CPU_CHIP_PENWELL)
 749                 drv_name = DRIVER_NAME_MFLD;
 750         else
 751                 drv_name = DRIVER_NAME_MRST;
 752         ret_val = request_irq(intelmaddata->irq,
 753                                 snd_intelmad_intr_handler,
 754                                 IRQF_SHARED, drv_name,
 755                                 intelmaddata);
 756         if (ret_val)
 757                 pr_err("cannot register IRQ\n");
 758         return ret_val;
 759 }
 760
 761 static int __devinit snd_intelmad_sst_register(
 762                         struct snd_intelmad *intelmaddata)
 763 {
 764         int ret_val = 0;
 765         struct snd_pmic_ops *intelmad_vendor_ops[MAX_VENDORS] = {
 766                 &snd_pmic_ops_fs,
 767                 &snd_pmic_ops_mx,
 768                 &snd_pmic_ops_nc,
 769                 &snd_msic_ops
 770         };
 771
 772         struct sc_reg_access vendor_addr = {0x00, 0x00, 0x00};
 773
 774         if (intelmaddata->cpu_id == CPU_CHIP_LINCROFT) {
 775                 ret_val = sst_sc_reg_access(&vendor_addr, PMIC_READ, 1);
 776                 if (ret_val)
 777                         return ret_val;
 778                 sst_card_vendor_id = (vendor_addr.value & (MASK2|MASK1|MASK0));
 779                 pr_debug("original n extrated vendor id = 0x%x %d\n",
 780                                 vendor_addr.value, sst_card_vendor_id);
 781                 if (sst_card_vendor_id < 0 || sst_card_vendor_id > 2) {
 782                         pr_err("vendor card not supported!!\n");
 783                         return -EIO;
 784                 }
 785         } else
 786                 sst_card_vendor_id = 0x3;
 787
 788         intelmaddata->sstdrv_ops->module_name = SST_CARD_NAMES;
 789         intelmaddata->sstdrv_ops->vendor_id = sst_card_vendor_id;
 790         BUG_ON(!intelmad_vendor_ops[sst_card_vendor_id]);
 791         intelmaddata->sstdrv_ops->scard_ops =
 792                         intelmad_vendor_ops[sst_card_vendor_id];
 793
 794         if (intelmaddata->cpu_id == CPU_CHIP_PENWELL) {
 795                 intelmaddata->sstdrv_ops->scard_ops->pb_on = 0;
 796                 intelmaddata->sstdrv_ops->scard_ops->cap_on = 0;
 797                 intelmaddata->sstdrv_ops->scard_ops->input_dev_id = DMIC;
 798                 intelmaddata->sstdrv_ops->scard_ops->output_dev_id =
 799                                                         STEREO_HEADPHONE;
 800         }
 801
 802         /* registering with SST driver to get access to SST APIs to use */
 803         ret_val = register_sst_card(intelmaddata->sstdrv_ops);
 804         if (ret_val) {
 805                 pr_err("sst card registration failed\n");
 806                 return ret_val;
 807         }
 808         sst_drv_ctx->scard_ops->card_status = SND_CARD_UN_INIT;
 809
 810         sst_card_vendor_id = intelmaddata->sstdrv_ops->vendor_id;
 811         intelmaddata->pmic_status = PMIC_UNINIT;
 812         return ret_val;
 813 }
 814
 815 /* Driver Init/exit functionalities */
 816 /**
 817  * snd_intelmad_pcm_new - to setup pcm for the card
 818  *
 819  * @card:  pointer to the sound card structure
 820  * @intelmaddata: pointer to internal context
 821  * @pb: playback count for this card
 822  * @cap: capture count for this card
 823  * @index: device index
 824  *
 825  * This function is called from probe function to set up pcm params
 826  * and functions
 827  */
 828 static int __devinit snd_intelmad_pcm_new(struct snd_card *card,
 829                         struct snd_intelmad *intelmaddata,
 830                         unsigned int pb, unsigned int cap, unsigned int index)
 831 {
 832         int ret_val = 0;
 833         struct snd_pcm *pcm;
 834         char name[32] = INTEL_MAD;
 835         struct snd_pcm_ops *pb_ops = NULL, *cap_ops = NULL;
 836
 837         pr_debug("called for pb %d, cp %d, idx %d\n", pb, cap, index);
 838         ret_val = snd_pcm_new(card, name, index, pb, cap, &pcm);
 839         if (ret_val)
 840                 return ret_val;
 841         /* setup the ops for playback and capture streams */
 842         switch (index) {
 843         case 0:
 844                 pb_ops = &snd_intelmad_headset_ops;
 845                 cap_ops = &snd_intelmad_capture_ops;
 846                 break;
 847         case 1:
 848                 pb_ops = &snd_intelmad_ihf_ops;
 849                 cap_ops = &snd_intelmad_capture_ops;
 850                 break;
 851         case 2:
 852                 pb_ops = &snd_intelmad_vibra_ops;
 853                 cap_ops = &snd_intelmad_capture_ops;
 854                 break;
 855         case 3:
 856                 pb_ops = &snd_intelmad_haptic_ops;
 857                 cap_ops = &snd_intelmad_capture_ops;
 858                 break;
 859         }
 860         if (pb)
 861                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, pb_ops);
 862         if (cap)
 863                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, cap_ops);
 864         /* setup private data which can be retrieved when required */
 865         pcm->private_data = intelmaddata;
 866         pcm->info_flags = 0;
 867         strncpy(pcm->name, card->shortname, strlen(card->shortname));
 868         /* allocate dma pages for ALSA stream operations */
 869         snd_pcm_lib_preallocate_pages_for_all(pcm,
 870                         SNDRV_DMA_TYPE_CONTINUOUS,
 871                         snd_dma_continuous_data(GFP_KERNEL),
 872                         MIN_BUFFER, MAX_BUFFER);
 873         return ret_val;
 874 }
 875
 876 static int __devinit snd_intelmad_pcm(struct snd_card *card,
 877                                 struct snd_intelmad *intelmaddata)
 878 {
 879         int ret_val = 0;
 880
 881         WARN_ON(!card);
 882         WARN_ON(!intelmaddata);
 883         pr_debug("snd_intelmad_pcm called\n");
 884         ret_val = snd_intelmad_pcm_new(card, intelmaddata, 1, 1, 0);
 885         if (intelmaddata->cpu_id == CPU_CHIP_LINCROFT)
 886                 return ret_val;
 887         ret_val = snd_intelmad_pcm_new(card, intelmaddata, 1, 0, 1);
 888         if (ret_val)
 889                 return ret_val;
 890         ret_val = snd_intelmad_pcm_new(card, intelmaddata, 1, 0, 2);
 891         if (ret_val)
 892                 return ret_val;
 893         return snd_intelmad_pcm_new(card, intelmaddata, 1, 0, 3);
 894 }
 895
 896 /**
 897  * snd_intelmad_jack- to setup jack settings of the card
 898  *
 899  * @intelmaddata: pointer to internal context
 900  *
 901  * This function is called send jack events
 902  */
 903 static int snd_intelmad_jack(struct snd_intelmad *intelmaddata)
 904 {
 905         struct snd_jack *jack;
 906         int retval;
 907
 908         pr_debug("snd_intelmad_jack called\n");
 909         jack = &intelmaddata->jack[0].jack;
 910         retval = snd_jack_new(intelmaddata->card, "Headphone",
 911                                 SND_JACK_HEADPHONE, &jack);
 912         if (retval < 0)
 913                 return retval;
 914         snd_jack_report(jack, 0);
 915
 916         jack->private_data = jack;
 917         intelmaddata->jack[0].jack = *jack;
 918
 919
 920         jack = &intelmaddata->jack[1].jack;
 921         retval = snd_jack_new(intelmaddata->card, "Headset",
 922                                 SND_JACK_HEADSET, &jack);
 923         if (retval < 0)
 924                 return retval;
 925
 926
 927
 928         jack->private_data = jack;
 929         intelmaddata->jack[1].jack = *jack;
 930
 931
 932         jack = &intelmaddata->jack[2].jack;
 933         retval = snd_jack_new(intelmaddata->card, "Short Press",
 934                                 SND_JACK_HS_SHORT_PRESS, &jack);
 935         if (retval < 0)
 936                 return retval;
 937
 938
 939         jack->private_data = jack;
 940         intelmaddata->jack[2].jack = *jack;
 941
 942
 943         jack = &intelmaddata->jack[3].jack;
 944         retval = snd_jack_new(intelmaddata->card, "Long Press",
 945                                 SND_JACK_HS_LONG_PRESS, &jack);
 946         if (retval < 0)
 947                 return retval;
 948
 949
 950         jack->private_data = jack;
 951         intelmaddata->jack[3].jack = *jack;
 952
 953         return retval;
 954 }
 955
 956 /**
 957  * snd_intelmad_mixer- to setup mixer settings of the card
 958  *
 959  * @intelmaddata: pointer to internal context
 960  *
 961  * This function is called from probe function to set up mixer controls
 962  */
 963 static int __devinit snd_intelmad_mixer(struct snd_intelmad *intelmaddata)
 964 {
 965         struct snd_card *card;
 966         unsigned int idx;
 967         int ret_val = 0, max_controls = 0;
 968         char *mixername = "IntelMAD Controls";
 969         struct snd_kcontrol_new *controls;
 970
 971         WARN_ON(!intelmaddata);
 972
 973         card = intelmaddata->card;
 974         strncpy(card->mixername, mixername, sizeof(card->mixername)-1);
 975         /* add all widget controls and expose the same */
 976         if (intelmaddata->cpu_id == CPU_CHIP_PENWELL) {
 977                 max_controls = MAX_CTRL_MFLD;
 978                 controls = snd_intelmad_controls_mfld;
 979         } else {
 980                 max_controls = MAX_CTRL_MRST;
 981                 controls = snd_intelmad_controls_mrst;
 982         }
 983         for (idx = 0; idx < max_controls; idx++) {
 984                 ret_val = snd_ctl_add(card,
 985                                 snd_ctl_new1(&controls[idx],
 986                                 intelmaddata));
 987                 pr_debug("mixer[idx]=%d added\n", idx);
 988                 if (ret_val) {
 989                         pr_err("in adding of control index = %d\n", idx);
 990                         break;
 991                 }
 992         }
 993         return ret_val;
 994 }
 995
 996 static int snd_intelmad_dev_free(struct snd_device *device)
 997 {
 998         struct snd_intelmad *intelmaddata;
 999
1000         WARN_ON(!device);
1001
1002         intelmaddata = device->device_data;
1003
1004         pr_debug("snd_intelmad_dev_free called\n");
1005         snd_card_free(intelmaddata->card);
1006         /*genl_unregister_family(&audio_event_genl_family);*/
1007         unregister_sst_card(intelmaddata->sstdrv_ops);
1008
1009         /* free allocated memory for internal context */
1010         destroy_workqueue(intelmaddata->mad_jack_wq);
1011         kfree(intelmaddata->sstdrv_ops);
1012         kfree(intelmaddata);
1013         return 0;
1014 }
1015
1016 static int __devinit snd_intelmad_create(
1017                 struct snd_intelmad *intelmaddata,
1018                 struct snd_card *card)
1019 {
1020         int ret_val;
1021         static struct snd_device_ops ops = {
1022                 .dev_free =     snd_intelmad_dev_free,
1023         };
1024
1025         WARN_ON(!intelmaddata);
1026         WARN_ON(!card);
1027         /* ALSA api to register for the device */
1028         ret_val = snd_device_new(card, SNDRV_DEV_LOWLEVEL, intelmaddata, &ops);
1029         return ret_val;
1030 }
1031
1032 /**
1033 * snd_intelmad_probe- function registred for init
1034 * @pdev :  pointer to the device struture
1035 * This function is called when the device is initialized
1036 */
1037 int __devinit snd_intelmad_probe(struct platform_device *pdev)
1038 {
1039         struct snd_card *card;
1040         int ret_val;
1041         struct snd_intelmad *intelmaddata;
1042         const struct platform_device_id *id = platform_get_device_id(pdev);
1043         unsigned int cpu_id = (unsigned int)id->driver_data;
1044
1045         pr_debug("probe for %s cpu_id %d\n", pdev->name, cpu_id);
1046         if (!strcmp(pdev->name, DRIVER_NAME_MRST))
1047                 pr_debug("detected MRST\n");
1048         else if (!strcmp(pdev->name, DRIVER_NAME_MFLD))
1049                 pr_debug("detected MFLD\n");
1050         else {
1051                 pr_err("detected unknown device abort!!\n");
1052                 return -EIO;
1053         }
1054         if ((cpu_id < CPU_CHIP_LINCROFT) || (cpu_id > CPU_CHIP_PENWELL)) {
1055                 pr_err("detected unknown cpu_id abort!!\n");
1056                 return -EIO;
1057         }
1058         /* allocate memory for saving internal context and working */
1059         intelmaddata = kzalloc(sizeof(*intelmaddata), GFP_KERNEL);
1060         if (!intelmaddata) {
1061                 pr_debug("mem alloctn fail\n");
1062                 return -ENOMEM;
1063         }
1064
1065         /* allocate memory for LPE API set */
1066         intelmaddata->sstdrv_ops = kzalloc(sizeof(struct intel_sst_card_ops),
1067                                         GFP_KERNEL);
1068         if (!intelmaddata->sstdrv_ops) {
1069                 pr_err("mem allocation for ops fail\n");
1070                 kfree(intelmaddata);
1071                 return -ENOMEM;
1072         }
1073
1074         intelmaddata->cpu_id = cpu_id;
1075         /* create a card instance with ALSA framework */
1076         ret_val = snd_card_create(card_index, card_id, THIS_MODULE, 0, &card);
1077         if (ret_val) {
1078                 pr_err("snd_card_create fail\n");
1079                 goto free_allocs;
1080         }
1081
1082         intelmaddata->pdev = pdev;
1083         intelmaddata->irq = platform_get_irq(pdev, 0);
1084         platform_set_drvdata(pdev, intelmaddata);
1085         intelmaddata->card = card;
1086         intelmaddata->card_id = card_id;
1087         intelmaddata->card_index = card_index;
1088         intelmaddata->master_mute = UNMUTE;
1089         intelmaddata->playback_cnt =  intelmaddata->capture_cnt = 0;
1090         strncpy(card->driver, INTEL_MAD, strlen(INTEL_MAD));
1091         strncpy(card->shortname, INTEL_MAD, strlen(INTEL_MAD));
1092
1093         intelmaddata->sstdrv_ops->module_name = SST_CARD_NAMES;
1094         /* registering with LPE driver to get access to SST APIs to use */
1095         ret_val = snd_intelmad_sst_register(intelmaddata);
1096         if (ret_val) {
1097                 pr_err("snd_intelmad_sst_register failed\n");
1098                 goto free_allocs;
1099         }
1100
1101         intelmaddata->pmic_status = PMIC_INIT;
1102
1103         ret_val = snd_intelmad_pcm(card, intelmaddata);
1104         if (ret_val) {
1105                 pr_err("snd_intelmad_pcm failed\n");
1106                 goto free_allocs;
1107         }
1108
1109         ret_val = snd_intelmad_mixer(intelmaddata);
1110         if (ret_val) {
1111                 pr_err("snd_intelmad_mixer failed\n");
1112                 goto free_allocs;
1113         }
1114
1115         ret_val = snd_intelmad_jack(intelmaddata);
1116         if (ret_val) {
1117                 pr_err("snd_intelmad_jack failed\n");
1118                 goto free_allocs;
1119         }
1120
1121         /*create work queue for jack interrupt*/
1122         INIT_WORK(&intelmaddata->mad_jack_msg.wq,
1123                 sst_process_mad_jack_detection);
1124
1125         intelmaddata->mad_jack_wq = create_workqueue("sst_mad_jack_wq");
1126         if (!intelmaddata->mad_jack_wq)
1127                 goto free_mad_jack_wq;
1128
1129         ret_val = snd_intelmad_register_irq(intelmaddata);
1130         if (ret_val) {
1131                 pr_err("snd_intelmad_register_irq fail\n");
1132                 goto free_allocs;
1133         }
1134
1135         /* internal function call to register device with ALSA */
1136         ret_val = snd_intelmad_create(intelmaddata, card);
1137         if (ret_val) {
1138                 pr_err("snd_intelmad_create failed\n");
1139                 goto free_allocs;
1140         }
1141         card->private_data = &intelmaddata;
1142         snd_card_set_dev(card, &pdev->dev);
1143         ret_val = snd_card_register(card);
1144         if (ret_val) {
1145                 pr_err("snd_card_register failed\n");
1146                 goto free_allocs;
1147         }
1148
1149         pr_debug("snd_intelmad_probe complete\n");
1150         return ret_val;
1151
1152 free_mad_jack_wq:
1153         destroy_workqueue(intelmaddata->mad_jack_wq);
1154 free_allocs:
1155         pr_err("probe failed\n");
1156         snd_card_free(card);
1157         kfree(intelmaddata->sstdrv_ops);
1158         kfree(intelmaddata);
1159         return ret_val;
1160 }
1161
1162
1163 static int snd_intelmad_remove(struct platform_device *pdev)
1164 {
1165         struct snd_intelmad *intelmaddata = platform_get_drvdata(pdev);
1166
1167         if (intelmaddata) {
1168                 snd_card_free(intelmaddata->card);
1169                 unregister_sst_card(intelmaddata->sstdrv_ops);
1170                 /* free allocated memory for internal context */
1171                 destroy_workqueue(intelmaddata->mad_jack_wq);
1172                 kfree(intelmaddata->sstdrv_ops);
1173                 kfree(intelmaddata);
1174         }
1175         return 0;
1176 }
1177
1178 /*********************************************************************
1179  *              Driver initialization and exit
1180  *********************************************************************/
1181 static const struct platform_device_id snd_intelmad_ids[] = {
1182         {DRIVER_NAME_MRST, CPU_CHIP_LINCROFT},
1183         {DRIVER_NAME_MFLD, CPU_CHIP_PENWELL},
1184         {"", 0},
1185
1186 };
1187
1188 static struct platform_driver snd_intelmad_driver = {
1189         .driver = {
1190                 .owner = THIS_MODULE,
1191                 .name = "intel_mid_sound_card",
1192         },
1193         .id_table = snd_intelmad_ids,
1194         .probe = snd_intelmad_probe,
1195         .remove = __devexit_p(snd_intelmad_remove),
1196 };
1197
1198 /*
1199  * alsa_card_intelmad_init- driver init function
1200  *
1201  * This function is called when driver module is inserted
1202  */
1203 static int __init alsa_card_intelmad_init(void)
1204 {
1205         pr_debug("mad_init called\n");
1206         return platform_driver_register(&snd_intelmad_driver);
1207 }
1208
1209 /**
1210  * alsa_card_intelmad_exit- driver exit function
1211  *
1212  * This function is called when driver module is removed
1213  */
1214 static void __exit alsa_card_intelmad_exit(void)
1215 {
1216         pr_debug("mad_exit called\n");
1217         return platform_driver_unregister(&snd_intelmad_driver);
1218 }
1219
1220 module_init(alsa_card_intelmad_init)
1221 module_exit(alsa_card_intelmad_exit)
1222