sound/soc/mediatek/mt_soc_audio_v1/mt_soc_pcm_voice.c

   1 /*
   2  * Copyright (C) 2007 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 /*******************************************************************************
  17  *
  18  * Filename:
  19  * ---------
  20  *   mt_soc_voice.c
  21  *
  22  * Project:
  23  * --------
  24  *   voice call platform driver
  25  *
  26  * Description:
  27  * ------------
  28  *
  29  *
  30  * Author:
  31  * -------
  32  * Chipeng Chang
  33  *
  34  *------------------------------------------------------------------------------
  35  * $Revision: #1 $
  36  * $Modtime:$
  37  * $Log:$
  38  *
  39  *
  40  *******************************************************************************/
  41
  42
  43 /*****************************************************************************
  44  *                     C O M P I L E R   F L A G S
  45  *****************************************************************************/
  46
  47
  48 /*****************************************************************************
  49  *                E X T E R N A L   R E F E R E N C E S
  50  *****************************************************************************/
  51
  52 #include <linux/dma-mapping.h>
  53 #include "AudDrv_Common.h"
  54 #include "AudDrv_Def.h"
  55 #include "AudDrv_Afe.h"
  56 #include "AudDrv_Ana.h"
  57 #include "AudDrv_Clk.h"
  58 #include "AudDrv_Kernel.h"
  59 #include "mt_soc_afe_control.h"
  60 #include "mt_soc_digital_type.h"
  61 #include "mt_soc_pcm_common.h"
  62
  63 /*
  64  *    function implementation
  65  */
  66
  67 static int mtk_voice_probe(struct platform_device *pdev);
  68 static int mtk_voice_close(struct snd_pcm_substream *substream);
  69 static int mtk_soc_voice_new(struct snd_soc_pcm_runtime *rtd);
  70 static int mtk_voice_platform_probe(struct snd_soc_platform *platform);
  71
  72 static uint16 Voice_Status = 0;
  73 static AudioDigtalI2S mAudioDigitalI2S;
  74 #define VOICE_UL_ON (1<<0)
  75 #define VOICE_DL_ON (1<<1)
  76 bool get_voice_status(void)
  77 {
  78     return (Voice_Status != 0) | GetExternalModemStatus();
  79 }
  80 EXPORT_SYMBOL(get_voice_status);
  81 static AudioDigitalPCM  Voice1Pcm =
  82 {
  83     .mTxLchRepeatSel = Soc_Aud_TX_LCH_RPT_TX_LCH_NO_REPEAT,
  84     .mVbt16kModeSel  = Soc_Aud_VBT_16K_MODE_VBT_16K_MODE_DISABLE,
  85     .mExtModemSel = Soc_Aud_EXT_MODEM_MODEM_2_USE_INTERNAL_MODEM,
  86     .mExtendBckSyncLength = 0,
  87     .mExtendBckSyncTypeSel = Soc_Aud_PCM_SYNC_TYPE_BCK_CYCLE_SYNC,
  88     .mSingelMicSel = Soc_Aud_BT_MODE_DUAL_MIC_ON_TX,
  89     .mAsyncFifoSel = Soc_Aud_BYPASS_SRC_SLAVE_USE_ASRC,
  90     .mSlaveModeSel = Soc_Aud_PCM_CLOCK_SOURCE_SALVE_MODE,
  91     .mPcmWordLength = Soc_Aud_PCM_WLEN_LEN_PCM_16BIT,
  92     .mPcmModeWidebandSel = false,
  93     .mPcmFormat = Soc_Aud_PCM_FMT_PCM_MODE_B,
  94     .mModemPcmOn = false,
  95 };
  96
  97 static struct snd_pcm_hw_constraint_list constraints_sample_rates =
  98 {
  99     .count = ARRAY_SIZE(soc_voice_supported_sample_rates),
 100     .list = soc_voice_supported_sample_rates,
 101     .mask = 0,
 102 };
 103
 104 static struct snd_pcm_hardware mtk_pcm_hardware =
 105 {
 106     .info = (SNDRV_PCM_INFO_MMAP |
 107     SNDRV_PCM_INFO_INTERLEAVED |
 108     SNDRV_PCM_INFO_RESUME |
 109     SNDRV_PCM_INFO_MMAP_VALID),
 110     .formats =      SND_SOC_STD_MT_FMTS,
 111     .rates =        SOC_NORMAL_USE_RATE,
 112     .rate_min =     SOC_NORMAL_USE_RATE_MIN,
 113     .rate_max =     SOC_NORMAL_USE_RATE_MAX,
 114     .channels_min =     SOC_NORMAL_USE_CHANNELS_MIN,
 115     .channels_max =     SOC_NORMAL_USE_CHANNELS_MAX,
 116     .buffer_bytes_max = MAX_BUFFER_SIZE,
 117     .period_bytes_max = MAX_PERIOD_SIZE,
 118     .periods_min =      1,
 119     .periods_max =      4096,
 120     .fifo_size =        0,
 121 };
 122
 123 static int mtk_voice_pcm_open(struct snd_pcm_substream *substream)
 124 {
 125     struct snd_pcm_runtime *runtime = substream->runtime;
 126     int err = 0;
 127     int ret = 0;
 128     AudDrv_Clk_On();
 129     AudDrv_ADC_Clk_On();
 130
 131     printk("mtk_voice_pcm_open\n");
 132
 133     if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 134     {
 135         printk("%s  with SNDRV_PCM_STREAM_CAPTURE \n",__func__);
 136         runtime->rate = 16000;
 137         if(Voice_Status != 0)
 138         {
 139             return 0;
 140         }
 141     }
 142     runtime->hw = mtk_pcm_hardware;
 143     memcpy((void *)(&(runtime->hw)), (void *)&mtk_pcm_hardware , sizeof(struct snd_pcm_hardware));
 144
 145     ret = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 146                                      &constraints_sample_rates);
 147     ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
 148
 149     if (ret < 0)
 150     {
 151         printk("snd_pcm_hw_constraint_integer failed\n");
 152     }
 153
 154     //print for hw pcm information
 155     printk("mtk_voice_pcm_open runtime rate = %d channels = %d \n", runtime->rate, runtime->channels);
 156
 157     runtime->hw.info |= SNDRV_PCM_INFO_INTERLEAVED;
 158     runtime->hw.info |= SNDRV_PCM_INFO_NONINTERLEAVED;
 159
 160     if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 161     {
 162         printk("SNDRV_PCM_STREAM_PLAYBACK mtkalsa_voice_constraints\n");
 163         runtime->rate = 16000;
 164     }
 165     else
 166     {
 167
 168     }
 169
 170     if (err < 0)
 171     {
 172         printk("mtk_voice_close\n");
 173         mtk_voice_close(substream);
 174         return err;
 175     }
 176     printk("mtk_voice_pcm_open return\n");
 177     return 0;
 178 }
 179
 180 static void ConfigAdcI2S(struct snd_pcm_substream *substream)
 181 {
 182     mAudioDigitalI2S.mLR_SWAP = Soc_Aud_LR_SWAP_NO_SWAP;
 183     mAudioDigitalI2S.mBuffer_Update_word = 8;
 184     mAudioDigitalI2S.mFpga_bit_test = 0;
 185     mAudioDigitalI2S.mFpga_bit = 0;
 186     mAudioDigitalI2S.mloopback = 0;
 187     mAudioDigitalI2S.mINV_LRCK = Soc_Aud_INV_LRCK_NO_INVERSE;
 188     mAudioDigitalI2S.mI2S_FMT = Soc_Aud_I2S_FORMAT_I2S;
 189     mAudioDigitalI2S.mI2S_WLEN = Soc_Aud_I2S_WLEN_WLEN_16BITS;
 190     mAudioDigitalI2S.mI2S_SAMPLERATE = (substream->runtime->rate);
 191 }
 192
 193 static int mtk_voice_close(struct snd_pcm_substream *substream)
 194 {
 195     printk("mtk_voice_close \n");
 196
 197     if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 198     {
 199         printk("%s  with SNDRV_PCM_STREAM_PLAYBACK \n",__func__);
 200         SetConnection(Soc_Aud_InterCon_DisConnect, Soc_Aud_InterConnectionInput_I14, Soc_Aud_InterConnectionOutput_O03);
 201         SetConnection(Soc_Aud_InterCon_DisConnect, Soc_Aud_InterConnectionInput_I14, Soc_Aud_InterConnectionOutput_O04);
 202         SetI2SDacEnable(false);
 203         SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_OUT_DAC, false);
 204         Voice_Status &= ~VOICE_DL_ON;
 205         if(Voice_Status == 0)
 206         {
 207             SetModemPcmEnable(MODEM_1, false);
 208         }
 209         EnableAfe(false);
 210         AudDrv_Clk_Off();
 211         AudDrv_ADC_Clk_Off();
 212     }
 213     else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 214     {
 215         printk("%s  with SNDRV_PCM_STREAM_CAPTURE \n",__func__);
 216         SetConnection(Soc_Aud_InterCon_DisConnect, Soc_Aud_InterConnectionInput_I03, Soc_Aud_InterConnectionOutput_O17);
 217         SetConnection(Soc_Aud_InterCon_DisConnect, Soc_Aud_InterConnectionInput_I04, Soc_Aud_InterConnectionOutput_O18);
 218         SetI2SAdcEnable(false);
 219         SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_ADC, false);
 220
 221         Voice_Status &= ~VOICE_UL_ON;
 222         if(Voice_Status == 0)
 223         {
 224             SetModemPcmEnable(MODEM_1, false);
 225         }
 226         EnableAfe(false);
 227         AudDrv_Clk_Off();
 228         AudDrv_ADC_Clk_Off();
 229     }
 230
 231     return 0;
 232 }
 233
 234 static int mtk_voice_trigger(struct snd_pcm_substream *substream, int cmd)
 235 {
 236     printk("mtk_voice_trigger cmd = %d\n", cmd);
 237     switch (cmd)
 238     {
 239         case SNDRV_PCM_TRIGGER_START:
 240         case SNDRV_PCM_TRIGGER_RESUME:
 241         case SNDRV_PCM_TRIGGER_STOP:
 242         case SNDRV_PCM_TRIGGER_SUSPEND:
 243             break;
 244     }
 245     return 0;
 246 }
 247
 248 static int mtk_voice_pcm_copy(struct snd_pcm_substream *substream,
 249                               int channel, snd_pcm_uframes_t pos,
 250                               void __user *dst, snd_pcm_uframes_t count)
 251 {
 252     return 0;
 253 }
 254
 255 static int mtk_voice_pcm_silence(struct snd_pcm_substream *substream,
 256                                  int channel, snd_pcm_uframes_t pos,
 257                                  snd_pcm_uframes_t count)
 258 {
 259     printk("mtk_voice_pcm_silence \n");
 260     return 0; /* do nothing */
 261 }
 262
 263 static void *dummy_page[2];
 264 static struct page *mtk_pcm_page(struct snd_pcm_substream *substream,
 265                                  unsigned long offset)
 266 {
 267     return virt_to_page(dummy_page[substream->stream]); /* the same page */
 268 }
 269
 270 static int mtk_voice1_prepare(struct snd_pcm_substream *substream)
 271 {
 272     struct snd_pcm_runtime *runtimeStream = substream->runtime;
 273     printk("mtk_voice1_prepare rate = %d  channels = %d period_size = %lu\n",
 274            runtimeStream->rate, runtimeStream->channels, runtimeStream->period_size);
 275
 276     if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 277     {
 278         printk("%s  with SNDRV_PCM_STREAM_PLAYBACK \n",__func__);
 279         SetConnection(Soc_Aud_InterCon_Connection, Soc_Aud_InterConnectionInput_I14, Soc_Aud_InterConnectionOutput_O03);
 280         SetConnection(Soc_Aud_InterCon_Connection, Soc_Aud_InterConnectionInput_I14, Soc_Aud_InterConnectionOutput_O04);
 281         // start I2S DAC out
 282         SetI2SDacOut(substream->runtime->rate);
 283         SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_OUT_DAC, true);
 284         SetI2SDacEnable(true);
 285         EnableAfe(true);
 286     }
 287     else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 288     {
 289         printk("%s  with SNDRV_PCM_STREAM_CAPTURE \n",__func__);
 290         SetConnection(Soc_Aud_InterCon_Connection, Soc_Aud_InterConnectionInput_I03, Soc_Aud_InterConnectionOutput_O17);
 291         SetConnection(Soc_Aud_InterCon_Connection, Soc_Aud_InterConnectionInput_I04, Soc_Aud_InterConnectionOutput_O18);
 292         ConfigAdcI2S(substream);
 293         SetI2SAdcIn(&mAudioDigitalI2S);
 294         SetMemoryPathEnable(Soc_Aud_Digital_Block_I2S_IN_ADC, true);
 295         SetI2SAdcEnable(true);
 296         EnableAfe(true);
 297
 298     }
 299     if(Voice_Status == 0)
 300     {
 301         Voice1Pcm.mPcmModeWidebandSel = (runtimeStream->rate == 8000) ? Soc_Aud_PCM_MODE_PCM_MODE_8K : Soc_Aud_PCM_MODE_PCM_MODE_16K;
 302         Voice1Pcm.mAsyncFifoSel = Soc_Aud_BYPASS_SRC_SLAVE_USE_ASYNC_FIFO;
 303         SetModemPcmConfig(MODEM_1, Voice1Pcm);
 304         SetModemPcmEnable(MODEM_1, true);
 305     }
 306     if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 307     {
 308         Voice_Status |= VOICE_DL_ON;
 309     }
 310     else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 311     {
 312         Voice_Status |= VOICE_UL_ON;
 313     }
 314
 315     return 0;
 316 }
 317
 318 static int mtk_pcm_hw_params(struct snd_pcm_substream *substream,
 319                              struct snd_pcm_hw_params *hw_params)
 320 {
 321     int ret = 0;
 322     printk("mtk_pcm_hw_params \n");
 323     return ret;
 324 }
 325
 326 static int mtk_voice_hw_free(struct snd_pcm_substream *substream)
 327 {
 328     PRINTK_AUDDRV("mtk_voice_hw_free \n");
 329     return snd_pcm_lib_free_pages(substream);
 330 }
 331
 332 static struct snd_pcm_ops mtk_voice_ops =
 333 {
 334     .open =     mtk_voice_pcm_open,
 335     .close =    mtk_voice_close,
 336     .ioctl =    snd_pcm_lib_ioctl,
 337     .hw_params =    mtk_pcm_hw_params,
 338     .hw_free =  mtk_voice_hw_free,
 339     .prepare =  mtk_voice1_prepare,
 340     .trigger =  mtk_voice_trigger,
 341     .copy =     mtk_voice_pcm_copy,
 342     .silence =  mtk_voice_pcm_silence,
 343     .page =     mtk_pcm_page,
 344 };
 345
 346 static struct snd_soc_platform_driver mtk_soc_voice_platform =
 347 {
 348     .ops        = &mtk_voice_ops,
 349     .pcm_new    = mtk_soc_voice_new,
 350     .probe      = mtk_voice_platform_probe,
 351 };
 352
 353 static int mtk_voice_probe(struct platform_device *pdev)
 354 {
 355     printk("mtk_voice_probe\n");
 356
 357     pdev->dev.coherent_dma_mask = DMA_BIT_MASK(64);
 358     if (!pdev->dev.dma_mask)
 359     {
 360         pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
 361     }
 362
 363     if (pdev->dev.of_node)
 364     {
 365         dev_set_name(&pdev->dev, "%s", MT_SOC_VOICE);
 366     }
 367     printk("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
 368     return snd_soc_register_platform(&pdev->dev,
 369                                      &mtk_soc_voice_platform);
 370 }
 371
 372 static int mtk_soc_voice_new(struct snd_soc_pcm_runtime *rtd)
 373 {
 374     int ret = 0;
 375     printk("%s\n", __func__);
 376     return ret;
 377 }
 378
 379 static int mtk_voice_platform_probe(struct snd_soc_platform *platform)
 380 {
 381     printk("mtk_voice_platform_probe\n");
 382     return 0;
 383 }
 384
 385 static int mtk_voice_remove(struct platform_device *pdev)
 386 {
 387     pr_debug("%s\n", __func__);
 388     snd_soc_unregister_platform(&pdev->dev);
 389     return 0;
 390 }
 391
 392
 393 //supend and resume function
 394 static int mtk_voice_pm_ops_suspend(struct device *device)
 395 {
 396    // if now in phone call state, not suspend!!
 397     bool b_modem1_speech_on;
 398     bool b_modem2_speech_on;
 399     AudDrv_Clk_On();//should enable clk for access reg
 400     b_modem1_speech_on = (bool)(Afe_Get_Reg(PCM2_INTF_CON) & 0x1);
 401     b_modem2_speech_on = (bool)(Afe_Get_Reg(PCM_INTF_CON) & 0x1);
 402     AudDrv_Clk_Off();//should enable clk for access reg
 403     if (b_modem1_speech_on == true || b_modem2_speech_on == true)
 404     {
 405         clkmux_sel(MT_MUX_AUDINTBUS, 0, "AUDIO"); //select 26M
 406         return 0;
 407     }
 408     return 0;
 409 }
 410
 411 static int mtk_voice_pm_ops_resume(struct device *device)
 412 {
 413     bool b_modem1_speech_on;
 414     bool b_modem2_speech_on;
 415     AudDrv_Clk_On();//should enable clk for access reg
 416     b_modem1_speech_on = (bool)(Afe_Get_Reg(PCM2_INTF_CON) & 0x1);
 417     b_modem2_speech_on = (bool)(Afe_Get_Reg(PCM_INTF_CON) & 0x1);
 418     AudDrv_Clk_Off();
 419     if (b_modem1_speech_on == true || b_modem2_speech_on == true)
 420     {
 421         clkmux_sel(MT_MUX_AUDINTBUS, 1, "AUDIO"); //mainpll
 422         return 0;
 423     }
 424     return 0;
 425 }
 426
 427 struct dev_pm_ops mtk_voice_pm_ops =
 428 {
 429     .suspend = mtk_voice_pm_ops_suspend,
 430     .resume = mtk_voice_pm_ops_resume,
 431     .freeze = NULL,
 432     .thaw = NULL,
 433     .poweroff = NULL,
 434     .restore = NULL,
 435     .restore_noirq = NULL,
 436 };
 437
 438 #ifdef CONFIG_OF
 439 static const struct of_device_id mt_soc_pcm_voice_of_ids[] =
 440 {
 441     { .compatible = "mediatek,mt_soc_pcm_voice", },
 442     {}
 443 };
 444 #endif
 445
 446 static struct platform_driver mtk_voice_driver =
 447 {
 448     .driver = {
 449         .name = MT_SOC_VOICE,
 450         .owner = THIS_MODULE,
 451         #ifdef CONFIG_OF
 452         .of_match_table = mt_soc_pcm_voice_of_ids,
 453         #endif
 454 #ifdef CONFIG_PM
 455         .pm     = &mtk_voice_pm_ops,
 456 #endif
 457     },
 458     .probe = mtk_voice_probe,
 459     .remove = mtk_voice_remove,
 460 };
 461
 462 #ifndef CONFIG_OF
 463 static struct platform_device *soc_mtk_voice_dev;
 464 #endif
 465
 466 static int __init mtk_soc_voice_platform_init(void)
 467 {
 468     int ret = 0;
 469     printk("%s\n", __func__);
 470     #ifndef CONFIG_OF
 471     soc_mtk_voice_dev = platform_device_alloc(MT_SOC_VOICE , -1);
 472     if (!soc_mtk_voice_dev)
 473     {
 474         return -ENOMEM;
 475     }
 476
 477     ret = platform_device_add(soc_mtk_voice_dev);
 478     if (ret != 0)
 479     {
 480         platform_device_put(soc_mtk_voice_dev);
 481         return ret;
 482     }
 483     #endif
 484     ret = platform_driver_register(&mtk_voice_driver);
 485
 486     return ret;
 487
 488 }
 489 module_init(mtk_soc_voice_platform_init);
 490
 491 static void __exit mtk_soc_voice_platform_exit(void)
 492 {
 493
 494     printk("%s\n", __func__);
 495     platform_driver_unregister(&mtk_voice_driver);
 496 }
 497 module_exit(mtk_soc_voice_platform_exit);
 498
 499 MODULE_DESCRIPTION("AFE PCM module platform driver");
 500 MODULE_LICENSE("GPL");
 501
 502