sound/soc/intel/boards/cht_bsw_nau8824.c

   1 /*
   2  *  cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
   3  *          platforms Cherrytrail and Braswell, with nau8824 codec.
   4  *
   5  *  Copyright (C) 2018 Intel Corp
   6  *  Copyright (C) 2018 Nuvoton Technology Corp
   7  *
   8  *  Author: Wang, Joseph C <joequant@gmail.com>
   9  *  Co-author: John Hsu <KCHSU0@nuvoton.com>
  10  *  This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
  11  *
  12  *  This program is free software; you can redistribute it and/or modify
  13  *  it under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; version 2 of the License.
  15  *
  16  *  This program is distributed in the hope that it will be useful, but
  17  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  *  General Public License for more details.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/slab.h>
  25 #include <sound/pcm.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/soc.h>
  28 #include <sound/jack.h>
  29 #include <linux/input.h>
  30 #include "../atom/sst-atom-controls.h"
  31 #include "../../codecs/nau8824.h"
  32
  33 struct cht_mc_private {
  34         struct snd_soc_jack jack;
  35 };
  36
  37 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
  38         {
  39                 .pin = "Headphone",
  40                 .mask = SND_JACK_HEADPHONE,
  41         },
  42         {
  43                 .pin = "Headset Mic",
  44                 .mask = SND_JACK_MICROPHONE,
  45         },
  46 };
  47
  48 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  49         SND_SOC_DAPM_HP("Headphone", NULL),
  50         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  51         SND_SOC_DAPM_MIC("Int Mic", NULL),
  52         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  53 };
  54
  55 static const struct snd_soc_dapm_route cht_audio_map[] = {
  56         {"Ext Spk", NULL, "SPKOUTL"},
  57         {"Ext Spk", NULL, "SPKOUTR"},
  58         {"Headphone", NULL, "HPOL"},
  59         {"Headphone", NULL, "HPOR"},
  60         {"MIC1", NULL, "Int Mic"},
  61         {"MIC2", NULL, "Int Mic"},
  62         {"HSMIC1", NULL, "Headset Mic"},
  63         {"HSMIC2", NULL, "Headset Mic"},
  64         {"Playback", NULL, "ssp2 Tx"},
  65         {"ssp2 Tx", NULL, "codec_out0"},
  66         {"ssp2 Tx", NULL, "codec_out1"},
  67         {"codec_in0", NULL, "ssp2 Rx" },
  68         {"codec_in1", NULL, "ssp2 Rx" },
  69         {"ssp2 Rx", NULL, "Capture"},
  70 };
  71
  72 static const struct snd_kcontrol_new cht_mc_controls[] = {
  73         SOC_DAPM_PIN_SWITCH("Headphone"),
  74         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  75         SOC_DAPM_PIN_SWITCH("Int Mic"),
  76         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  77 };
  78
  79 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
  80         struct snd_pcm_hw_params *params)
  81 {
  82         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  83         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  84         int ret;
  85
  86         ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
  87                 SND_SOC_CLOCK_IN);
  88         if (ret < 0) {
  89                 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
  90                 return ret;
  91         }
  92         ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
  93                 params_rate(params) * 256);
  94         if (ret < 0) {
  95                 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
  96                 return ret;
  97         }
  98
  99         return 0;
 100 }
 101
 102 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 103 {
 104         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 105         struct snd_soc_jack *jack = &ctx->jack;
 106         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 107         struct snd_soc_component *component = codec_dai->component;
 108         int ret, jack_type;
 109
 110         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 111         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf, 0x1, 4, 24);
 112         if (ret < 0) {
 113                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 114                 return ret;
 115         }
 116
 117         /* NAU88L24 supports 4 butons headset detection
 118          * KEY_MEDIA
 119          * KEY_VOICECOMMAND
 120          * KEY_VOLUMEUP
 121          * KEY_VOLUMEDOWN
 122          */
 123         jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 124                 SND_JACK_BTN_2 | SND_JACK_BTN_3;
 125         ret = snd_soc_card_jack_new(runtime->card, "Headset", jack_type, jack,
 126                 cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
 127         if (ret) {
 128                 dev_err(runtime->dev,
 129                         "Headset Jack creation failed %d\n", ret);
 130                 return ret;
 131         }
 132         snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
 133         snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 134         snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 135         snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 136
 137         nau8824_enable_jack_detect(component, jack);
 138
 139         return ret;
 140 }
 141
 142 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 143         struct snd_pcm_hw_params *params)
 144 {
 145         struct snd_interval *rate = hw_param_interval(params,
 146                 SNDRV_PCM_HW_PARAM_RATE);
 147         struct snd_interval *channels = hw_param_interval(params,
 148                 SNDRV_PCM_HW_PARAM_CHANNELS);
 149         struct snd_mask *fmt =
 150                 hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 151
 152         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 153         rate->min = rate->max = 48000;
 154         channels->min = channels->max = 2;
 155
 156         /* set SSP2 to 24-bit */
 157         snd_mask_none(fmt);
 158         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 159
 160         return 0;
 161 }
 162
 163 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 164 {
 165         return snd_pcm_hw_constraint_single(substream->runtime,
 166                 SNDRV_PCM_HW_PARAM_RATE, 48000);
 167 }
 168
 169 static const struct snd_soc_ops cht_aif1_ops = {
 170         .startup = cht_aif1_startup,
 171 };
 172
 173 static const struct snd_soc_ops cht_be_ssp2_ops = {
 174         .hw_params = cht_aif1_hw_params,
 175 };
 176
 177 static struct snd_soc_dai_link cht_dailink[] = {
 178         /* Front End DAI links */
 179         [MERR_DPCM_AUDIO] = {
 180                 .name = "Audio Port",
 181                 .stream_name = "Audio",
 182                 .cpu_dai_name = "media-cpu-dai",
 183                 .codec_dai_name = "snd-soc-dummy-dai",
 184                 .codec_name = "snd-soc-dummy",
 185                 .platform_name = "sst-mfld-platform",
 186                 .nonatomic = true,
 187                 .dynamic = 1,
 188                 .dpcm_playback = 1,
 189                 .dpcm_capture = 1,
 190                 .ops = &cht_aif1_ops,
 191         },
 192         [MERR_DPCM_DEEP_BUFFER] = {
 193                 .name = "Deep-Buffer Audio Port",
 194                 .stream_name = "Deep-Buffer Audio",
 195                 .cpu_dai_name = "deepbuffer-cpu-dai",
 196                 .codec_dai_name = "snd-soc-dummy-dai",
 197                 .codec_name = "snd-soc-dummy",
 198                 .platform_name = "sst-mfld-platform",
 199                 .nonatomic = true,
 200                 .dynamic = 1,
 201                 .dpcm_playback = 1,
 202                 .ops = &cht_aif1_ops,
 203         },
 204         [MERR_DPCM_COMPR] = {
 205                 .name = "Compressed Port",
 206                 .stream_name = "Compress",
 207                 .cpu_dai_name = "compress-cpu-dai",
 208                 .codec_dai_name = "snd-soc-dummy-dai",
 209                 .codec_name = "snd-soc-dummy",
 210                 .platform_name = "sst-mfld-platform",
 211         },
 212         /* Back End DAI links */
 213         {
 214                 /* SSP2 - Codec */
 215                 .name = "SSP2-Codec",
 216                 .id = 1,
 217                 .cpu_dai_name = "ssp2-port",
 218                 .platform_name = "sst-mfld-platform",
 219                 .no_pcm = 1,
 220                 .codec_dai_name = NAU8824_CODEC_DAI,
 221                 .codec_name = "i2c-10508824:00",
 222                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 223                         | SND_SOC_DAIFMT_CBS_CFS,
 224                 .init = cht_codec_init,
 225                 .be_hw_params_fixup = cht_codec_fixup,
 226                 .dpcm_playback = 1,
 227                 .dpcm_capture = 1,
 228                 .ops = &cht_be_ssp2_ops,
 229         },
 230 };
 231
 232 /* SoC card */
 233 static struct snd_soc_card snd_soc_card_cht = {
 234         .name = "chtnau8824",
 235         .owner = THIS_MODULE,
 236         .dai_link = cht_dailink,
 237         .num_links = ARRAY_SIZE(cht_dailink),
 238         .dapm_widgets = cht_dapm_widgets,
 239         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 240         .dapm_routes = cht_audio_map,
 241         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 242         .controls = cht_mc_controls,
 243         .num_controls = ARRAY_SIZE(cht_mc_controls),
 244 };
 245
 246 static int snd_cht_mc_probe(struct platform_device *pdev)
 247 {
 248         struct cht_mc_private *drv;
 249         int ret_val;
 250
 251         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 252         if (!drv)
 253                 return -ENOMEM;
 254         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 255
 256         /* register the soc card */
 257         snd_soc_card_cht.dev = &pdev->dev;
 258         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 259         if (ret_val) {
 260                 dev_err(&pdev->dev,
 261                         "snd_soc_register_card failed %d\n", ret_val);
 262                 return ret_val;
 263         }
 264         platform_set_drvdata(pdev, &snd_soc_card_cht);
 265
 266         return ret_val;
 267 }
 268
 269 static struct platform_driver snd_cht_mc_driver = {
 270         .driver = {
 271                 .name = "cht-bsw-nau8824",
 272         },
 273         .probe = snd_cht_mc_probe,
 274 };
 275
 276 module_platform_driver(snd_cht_mc_driver);
 277
 278 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 279 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
 280 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
 281 MODULE_LICENSE("GPL v2");
 282 MODULE_ALIAS("platform:cht-bsw-nau8824");