kernel/sound/soc/intel/boards/cht_bsw_rt5645.c

   1 /*
   2  *  cht-bsw-rt5645.c - ASoc Machine driver for Intel Cherryview-based platforms
   3  *                     Cherrytrail and Braswell, with RT5645 codec.
   4  *
   5  *  Copyright (C) 2015 Intel Corp
   6  *  Author: Fang, Yang A <yang.a.fang@intel.com>
   7  *              N,Harshapriya <harshapriya.n@intel.com>
   8  *  This file is modified from cht_bsw_rt5672.c
   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  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/slab.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29 #include <sound/jack.h>
  30 #include "../../codecs/rt5645.h"
  31 #include "../atom/sst-atom-controls.h"
  32
  33 #define CHT_PLAT_CLK_3_HZ       19200000
  34 #define CHT_CODEC_DAI   "rt5645-aif1"
  35
  36 struct cht_mc_private {
  37         struct snd_soc_jack hp_jack;
  38         struct snd_soc_jack mic_jack;
  39 };
  40
  41 static inline struct snd_soc_dai *cht_get_codec_dai(struct snd_soc_card *card)
  42 {
  43         int i;
  44
  45         for (i = 0; i < card->num_rtd; i++) {
  46                 struct snd_soc_pcm_runtime *rtd;
  47
  48                 rtd = card->rtd + i;
  49                 if (!strncmp(rtd->codec_dai->name, CHT_CODEC_DAI,
  50                              strlen(CHT_CODEC_DAI)))
  51                         return rtd->codec_dai;
  52         }
  53         return NULL;
  54 }
  55
  56 static int platform_clock_control(struct snd_soc_dapm_widget *w,
  57                 struct snd_kcontrol *k, int  event)
  58 {
  59         struct snd_soc_dapm_context *dapm = w->dapm;
  60         struct snd_soc_card *card = dapm->card;
  61         struct snd_soc_dai *codec_dai;
  62         int ret;
  63
  64         codec_dai = cht_get_codec_dai(card);
  65         if (!codec_dai) {
  66                 dev_err(card->dev, "Codec dai not found; Unable to set platform clock\n");
  67                 return -EIO;
  68         }
  69
  70         if (!SND_SOC_DAPM_EVENT_OFF(event))
  71                 return 0;
  72
  73         /* Set codec sysclk source to its internal clock because codec PLL will
  74          * be off when idle and MCLK will also be off by ACPI when codec is
  75          * runtime suspended. Codec needs clock for jack detection and button
  76          * press.
  77          */
  78         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_RCCLK,
  79                         0, SND_SOC_CLOCK_IN);
  80         if (ret < 0) {
  81                 dev_err(card->dev, "can't set codec sysclk: %d\n", ret);
  82                 return ret;
  83         }
  84
  85         return 0;
  86 }
  87
  88 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  89         SND_SOC_DAPM_HP("Headphone", NULL),
  90         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  91         SND_SOC_DAPM_MIC("Int Mic", NULL),
  92         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  93         SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0,
  94                         platform_clock_control, SND_SOC_DAPM_POST_PMD),
  95 };
  96
  97 static const struct snd_soc_dapm_route cht_audio_map[] = {
  98         {"IN1P", NULL, "Headset Mic"},
  99         {"IN1N", NULL, "Headset Mic"},
 100         {"DMIC L1", NULL, "Int Mic"},
 101         {"DMIC R1", NULL, "Int Mic"},
 102         {"Headphone", NULL, "HPOL"},
 103         {"Headphone", NULL, "HPOR"},
 104         {"Ext Spk", NULL, "SPOL"},
 105         {"Ext Spk", NULL, "SPOR"},
 106         {"AIF1 Playback", NULL, "ssp2 Tx"},
 107         {"ssp2 Tx", NULL, "codec_out0"},
 108         {"ssp2 Tx", NULL, "codec_out1"},
 109         {"codec_in0", NULL, "ssp2 Rx" },
 110         {"codec_in1", NULL, "ssp2 Rx" },
 111         {"ssp2 Rx", NULL, "AIF1 Capture"},
 112         {"Headphone", NULL, "Platform Clock"},
 113         {"Headset Mic", NULL, "Platform Clock"},
 114         {"Int Mic", NULL, "Platform Clock"},
 115         {"Ext Spk", NULL, "Platform Clock"},
 116 };
 117
 118 static const struct snd_kcontrol_new cht_mc_controls[] = {
 119         SOC_DAPM_PIN_SWITCH("Headphone"),
 120         SOC_DAPM_PIN_SWITCH("Headset Mic"),
 121         SOC_DAPM_PIN_SWITCH("Int Mic"),
 122         SOC_DAPM_PIN_SWITCH("Ext Spk"),
 123 };
 124
 125 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
 126                              struct snd_pcm_hw_params *params)
 127 {
 128         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 129         struct snd_soc_dai *codec_dai = rtd->codec_dai;
 130         int ret;
 131
 132         /* set codec PLL source to the 19.2MHz platform clock (MCLK) */
 133         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5645_PLL1_S_MCLK,
 134                                   CHT_PLAT_CLK_3_HZ, params_rate(params) * 512);
 135         if (ret < 0) {
 136                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
 137                 return ret;
 138         }
 139
 140         ret = snd_soc_dai_set_sysclk(codec_dai, RT5645_SCLK_S_PLL1,
 141                                 params_rate(params) * 512, SND_SOC_CLOCK_IN);
 142         if (ret < 0) {
 143                 dev_err(rtd->dev, "can't set codec sysclk: %d\n", ret);
 144                 return ret;
 145         }
 146
 147         return 0;
 148 }
 149
 150 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 151 {
 152         int ret;
 153         struct snd_soc_codec *codec = runtime->codec;
 154         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 155         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 156
 157         /* Select clk_i2s1_asrc as ASRC clock source */
 158         rt5645_sel_asrc_clk_src(codec,
 159                                 RT5645_DA_STEREO_FILTER |
 160                                 RT5645_DA_MONO_L_FILTER |
 161                                 RT5645_DA_MONO_R_FILTER |
 162                                 RT5645_AD_STEREO_FILTER,
 163                                 RT5645_CLK_SEL_I2S1_ASRC);
 164
 165         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 166         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xF, 0xF, 4, 24);
 167         if (ret < 0) {
 168                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 169                 return ret;
 170         }
 171
 172         ret = snd_soc_card_jack_new(runtime->card, "Headphone Jack",
 173                                     SND_JACK_HEADPHONE, &ctx->hp_jack,
 174                                     NULL, 0);
 175         if (ret) {
 176                 dev_err(runtime->dev, "HP jack creation failed %d\n", ret);
 177                 return ret;
 178         }
 179
 180         ret = snd_soc_card_jack_new(runtime->card, "Mic Jack",
 181                                     SND_JACK_MICROPHONE, &ctx->mic_jack,
 182                                     NULL, 0);
 183         if (ret) {
 184                 dev_err(runtime->dev, "Mic jack creation failed %d\n", ret);
 185                 return ret;
 186         }
 187
 188         rt5645_set_jack_detect(codec, &ctx->hp_jack, &ctx->mic_jack);
 189
 190         return ret;
 191 }
 192
 193 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 194                             struct snd_pcm_hw_params *params)
 195 {
 196         struct snd_interval *rate = hw_param_interval(params,
 197                         SNDRV_PCM_HW_PARAM_RATE);
 198         struct snd_interval *channels = hw_param_interval(params,
 199                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 200
 201         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 202         rate->min = rate->max = 48000;
 203         channels->min = channels->max = 2;
 204
 205         /* set SSP2 to 24-bit */
 206         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 207         return 0;
 208 }
 209
 210 static unsigned int rates_48000[] = {
 211         48000,
 212 };
 213
 214 static struct snd_pcm_hw_constraint_list constraints_48000 = {
 215         .count = ARRAY_SIZE(rates_48000),
 216         .list  = rates_48000,
 217 };
 218
 219 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 220 {
 221         return snd_pcm_hw_constraint_list(substream->runtime, 0,
 222                         SNDRV_PCM_HW_PARAM_RATE,
 223                         &constraints_48000);
 224 }
 225
 226 static struct snd_soc_ops cht_aif1_ops = {
 227         .startup = cht_aif1_startup,
 228 };
 229
 230 static struct snd_soc_ops cht_be_ssp2_ops = {
 231         .hw_params = cht_aif1_hw_params,
 232 };
 233
 234 static struct snd_soc_dai_link cht_dailink[] = {
 235         [MERR_DPCM_AUDIO] = {
 236                 .name = "Audio Port",
 237                 .stream_name = "Audio",
 238                 .cpu_dai_name = "media-cpu-dai",
 239                 .codec_dai_name = "snd-soc-dummy-dai",
 240                 .codec_name = "snd-soc-dummy",
 241                 .platform_name = "sst-mfld-platform",
 242                 .ignore_suspend = 1,
 243                 .dynamic = 1,
 244                 .dpcm_playback = 1,
 245                 .dpcm_capture = 1,
 246                 .ops = &cht_aif1_ops,
 247         },
 248         [MERR_DPCM_COMPR] = {
 249                 .name = "Compressed Port",
 250                 .stream_name = "Compress",
 251                 .cpu_dai_name = "compress-cpu-dai",
 252                 .codec_dai_name = "snd-soc-dummy-dai",
 253                 .codec_name = "snd-soc-dummy",
 254                 .platform_name = "sst-mfld-platform",
 255         },
 256         /* CODEC<->CODEC link */
 257         /* back ends */
 258         {
 259                 .name = "SSP2-Codec",
 260                 .be_id = 1,
 261                 .cpu_dai_name = "ssp2-port",
 262                 .platform_name = "sst-mfld-platform",
 263                 .no_pcm = 1,
 264                 .codec_dai_name = "rt5645-aif1",
 265                 .codec_name = "i2c-10EC5645:00",
 266                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 267                                         | SND_SOC_DAIFMT_CBS_CFS,
 268                 .init = cht_codec_init,
 269                 .be_hw_params_fixup = cht_codec_fixup,
 270                 .ignore_suspend = 1,
 271                 .dpcm_playback = 1,
 272                 .dpcm_capture = 1,
 273                 .ops = &cht_be_ssp2_ops,
 274         },
 275 };
 276
 277 /* SoC card */
 278 static struct snd_soc_card snd_soc_card_cht = {
 279         .name = "chtrt5645",
 280         .dai_link = cht_dailink,
 281         .num_links = ARRAY_SIZE(cht_dailink),
 282         .dapm_widgets = cht_dapm_widgets,
 283         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 284         .dapm_routes = cht_audio_map,
 285         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 286         .controls = cht_mc_controls,
 287         .num_controls = ARRAY_SIZE(cht_mc_controls),
 288 };
 289
 290 static int snd_cht_mc_probe(struct platform_device *pdev)
 291 {
 292         int ret_val = 0;
 293         struct cht_mc_private *drv;
 294
 295         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_ATOMIC);
 296         if (!drv)
 297                 return -ENOMEM;
 298
 299         snd_soc_card_cht.dev = &pdev->dev;
 300         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 301         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 302         if (ret_val) {
 303                 dev_err(&pdev->dev,
 304                         "snd_soc_register_card failed %d\n", ret_val);
 305                 return ret_val;
 306         }
 307         platform_set_drvdata(pdev, &snd_soc_card_cht);
 308         return ret_val;
 309 }
 310
 311 static struct platform_driver snd_cht_mc_driver = {
 312         .driver = {
 313                 .name = "cht-bsw-rt5645",
 314                 .pm = &snd_soc_pm_ops,
 315         },
 316         .probe = snd_cht_mc_probe,
 317 };
 318
 319 module_platform_driver(snd_cht_mc_driver)
 320
 321 MODULE_DESCRIPTION("ASoC Intel(R) Braswell Machine driver");
 322 MODULE_AUTHOR("Fang, Yang A,N,Harshapriya");
 323 MODULE_LICENSE("GPL v2");
 324 MODULE_ALIAS("platform:cht-bsw-rt5645");