sound/soc/intel/boards/bytcr_rt5640.c

   1 /*
   2  *  byt_cr_dpcm_rt5640.c - ASoc Machine driver for Intel Byt CR platform
   3  *
   4  *  Copyright (C) 2014 Intel Corp
   5  *  Author: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
   6  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; version 2 of the License.
  11  *
  12  *  This program is distributed in the hope that it will be useful, but
  13  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  *  General Public License for more details.
  16  *
  17  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/module.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/device.h>
  24 #include <linux/slab.h>
  25 #include <linux/input.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include <sound/soc.h>
  29 #include "../../codecs/rt5640.h"
  30 #include "../atom/sst-atom-controls.h"
  31
  32 static const struct snd_soc_dapm_widget byt_dapm_widgets[] = {
  33         SND_SOC_DAPM_HP("Headphone", NULL),
  34         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  35         SND_SOC_DAPM_MIC("Int Mic", NULL),
  36         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  37 };
  38
  39 static const struct snd_soc_dapm_route byt_audio_map[] = {
  40         {"IN2P", NULL, "Headset Mic"},
  41         {"IN2N", NULL, "Headset Mic"},
  42         {"Headset Mic", NULL, "MICBIAS1"},
  43         {"IN1P", NULL, "MICBIAS1"},
  44         {"LDO2", NULL, "Int Mic"},
  45         {"Headphone", NULL, "HPOL"},
  46         {"Headphone", NULL, "HPOR"},
  47         {"Ext Spk", NULL, "SPOLP"},
  48         {"Ext Spk", NULL, "SPOLN"},
  49         {"Ext Spk", NULL, "SPORP"},
  50         {"Ext Spk", NULL, "SPORN"},
  51
  52         {"AIF1 Playback", NULL, "ssp2 Tx"},
  53         {"ssp2 Tx", NULL, "codec_out0"},
  54         {"ssp2 Tx", NULL, "codec_out1"},
  55         {"codec_in0", NULL, "ssp2 Rx"},
  56         {"codec_in1", NULL, "ssp2 Rx"},
  57         {"ssp2 Rx", NULL, "AIF1 Capture"},
  58 };
  59
  60 static const struct snd_kcontrol_new byt_mc_controls[] = {
  61         SOC_DAPM_PIN_SWITCH("Headphone"),
  62         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  63         SOC_DAPM_PIN_SWITCH("Int Mic"),
  64         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  65 };
  66
  67 static int byt_aif1_hw_params(struct snd_pcm_substream *substream,
  68                                         struct snd_pcm_hw_params *params)
  69 {
  70         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  71         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  72         int ret;
  73
  74         snd_soc_dai_set_bclk_ratio(codec_dai, 50);
  75
  76         ret = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_PLL1,
  77                                      params_rate(params) * 512,
  78                                      SND_SOC_CLOCK_IN);
  79         if (ret < 0) {
  80                 dev_err(rtd->dev, "can't set codec clock %d\n", ret);
  81                 return ret;
  82         }
  83
  84         ret = snd_soc_dai_set_pll(codec_dai, 0, RT5640_PLL1_S_BCLK1,
  85                                   params_rate(params) * 50,
  86                                   params_rate(params) * 512);
  87         if (ret < 0) {
  88                 dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
  89                 return ret;
  90         }
  91
  92         return 0;
  93 }
  94
  95 static const struct snd_soc_pcm_stream byt_dai_params = {
  96         .formats = SNDRV_PCM_FMTBIT_S24_LE,
  97         .rate_min = 48000,
  98         .rate_max = 48000,
  99         .channels_min = 2,
 100         .channels_max = 2,
 101 };
 102
 103 static int byt_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 104                             struct snd_pcm_hw_params *params)
 105 {
 106         struct snd_interval *rate = hw_param_interval(params,
 107                         SNDRV_PCM_HW_PARAM_RATE);
 108         struct snd_interval *channels = hw_param_interval(params,
 109                                                 SNDRV_PCM_HW_PARAM_CHANNELS);
 110
 111         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 112         rate->min = rate->max = 48000;
 113         channels->min = channels->max = 2;
 114
 115         /* set SSP2 to 24-bit */
 116         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 117         return 0;
 118 }
 119
 120 static int byt_aif1_startup(struct snd_pcm_substream *substream)
 121 {
 122         return snd_pcm_hw_constraint_single(substream->runtime,
 123                         SNDRV_PCM_HW_PARAM_RATE, 48000);
 124 }
 125
 126 static struct snd_soc_ops byt_aif1_ops = {
 127         .startup = byt_aif1_startup,
 128 };
 129
 130 static struct snd_soc_ops byt_be_ssp2_ops = {
 131         .hw_params = byt_aif1_hw_params,
 132 };
 133
 134 static struct snd_soc_dai_link byt_dailink[] = {
 135         [MERR_DPCM_AUDIO] = {
 136                 .name = "Baytrail Audio Port",
 137                 .stream_name = "Baytrail Audio",
 138                 .cpu_dai_name = "media-cpu-dai",
 139                 .codec_dai_name = "snd-soc-dummy-dai",
 140                 .codec_name = "snd-soc-dummy",
 141                 .platform_name = "sst-mfld-platform",
 142                 .ignore_suspend = 1,
 143                 .dynamic = 1,
 144                 .dpcm_playback = 1,
 145                 .dpcm_capture = 1,
 146                 .ops = &byt_aif1_ops,
 147         },
 148         [MERR_DPCM_COMPR] = {
 149                 .name = "Baytrail Compressed Port",
 150                 .stream_name = "Baytrail Compress",
 151                 .cpu_dai_name = "compress-cpu-dai",
 152                 .codec_dai_name = "snd-soc-dummy-dai",
 153                 .codec_name = "snd-soc-dummy",
 154                 .platform_name = "sst-mfld-platform",
 155         },
 156                 /* back ends */
 157         {
 158                 .name = "SSP2-Codec",
 159                 .be_id = 1,
 160                 .cpu_dai_name = "ssp2-port",
 161                 .platform_name = "sst-mfld-platform",
 162                 .no_pcm = 1,
 163                 .codec_dai_name = "rt5640-aif1",
 164                 .codec_name = "i2c-10EC5640:00",
 165                 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 166                                                 | SND_SOC_DAIFMT_CBS_CFS,
 167                 .be_hw_params_fixup = byt_codec_fixup,
 168                 .ignore_suspend = 1,
 169                 .dpcm_playback = 1,
 170                 .dpcm_capture = 1,
 171                 .ops = &byt_be_ssp2_ops,
 172         },
 173 };
 174
 175 /* SoC card */
 176 static struct snd_soc_card snd_soc_card_byt = {
 177         .name = "baytrailcraudio",
 178         .owner = THIS_MODULE,
 179         .dai_link = byt_dailink,
 180         .num_links = ARRAY_SIZE(byt_dailink),
 181         .dapm_widgets = byt_dapm_widgets,
 182         .num_dapm_widgets = ARRAY_SIZE(byt_dapm_widgets),
 183         .dapm_routes = byt_audio_map,
 184         .num_dapm_routes = ARRAY_SIZE(byt_audio_map),
 185         .controls = byt_mc_controls,
 186         .num_controls = ARRAY_SIZE(byt_mc_controls),
 187 };
 188
 189 static int snd_byt_mc_probe(struct platform_device *pdev)
 190 {
 191         int ret_val = 0;
 192
 193         /* register the soc card */
 194         snd_soc_card_byt.dev = &pdev->dev;
 195
 196         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_byt);
 197         if (ret_val) {
 198                 dev_err(&pdev->dev, "devm_snd_soc_register_card failed %d\n", ret_val);
 199                 return ret_val;
 200         }
 201         platform_set_drvdata(pdev, &snd_soc_card_byt);
 202         return ret_val;
 203 }
 204
 205 static struct platform_driver snd_byt_mc_driver = {
 206         .driver = {
 207                 .name = "bytt100_rt5640",
 208                 .pm = &snd_soc_pm_ops,
 209         },
 210         .probe = snd_byt_mc_probe,
 211 };
 212
 213 module_platform_driver(snd_byt_mc_driver);
 214
 215 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 216 MODULE_AUTHOR("Subhransu S. Prusty <subhransu.s.prusty@intel.com>");
 217 MODULE_LICENSE("GPL v2");
 218 MODULE_ALIAS("platform:bytt100_rt5640");