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/soc-acpi.h>
  29 #include <sound/jack.h>
  30 #include <linux/input.h>
  31 #include "../atom/sst-atom-controls.h"
  32 #include "../../codecs/nau8824.h"
  33
  34 struct cht_mc_private {
  35         struct snd_soc_jack jack;
  36 };
  37
  38 static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
  39         {
  40                 .pin = "Headphone",
  41                 .mask = SND_JACK_HEADPHONE,
  42         },
  43         {
  44                 .pin = "Headset Mic",
  45                 .mask = SND_JACK_MICROPHONE,
  46         },
  47 };
  48
  49 static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  50         SND_SOC_DAPM_HP("Headphone", NULL),
  51         SND_SOC_DAPM_MIC("Headset Mic", NULL),
  52         SND_SOC_DAPM_MIC("Int Mic", NULL),
  53         SND_SOC_DAPM_SPK("Ext Spk", NULL),
  54 };
  55
  56 static const struct snd_soc_dapm_route cht_audio_map[] = {
  57         {"Ext Spk", NULL, "SPKOUTL"},
  58         {"Ext Spk", NULL, "SPKOUTR"},
  59         {"Headphone", NULL, "HPOL"},
  60         {"Headphone", NULL, "HPOR"},
  61         {"MIC1", NULL, "Int Mic"},
  62         {"MIC2", NULL, "Int Mic"},
  63         {"HSMIC1", NULL, "Headset Mic"},
  64         {"HSMIC2", NULL, "Headset Mic"},
  65         {"Playback", NULL, "ssp2 Tx"},
  66         {"ssp2 Tx", NULL, "codec_out0"},
  67         {"ssp2 Tx", NULL, "codec_out1"},
  68         {"codec_in0", NULL, "ssp2 Rx" },
  69         {"codec_in1", NULL, "ssp2 Rx" },
  70         {"ssp2 Rx", NULL, "Capture"},
  71 };
  72
  73 static const struct snd_kcontrol_new cht_mc_controls[] = {
  74         SOC_DAPM_PIN_SWITCH("Headphone"),
  75         SOC_DAPM_PIN_SWITCH("Headset Mic"),
  76         SOC_DAPM_PIN_SWITCH("Int Mic"),
  77         SOC_DAPM_PIN_SWITCH("Ext Spk"),
  78 };
  79
  80 static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
  81         struct snd_pcm_hw_params *params)
  82 {
  83         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  84         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  85         int ret;
  86
  87         ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
  88                 SND_SOC_CLOCK_IN);
  89         if (ret < 0) {
  90                 dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
  91                 return ret;
  92         }
  93         ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
  94                 params_rate(params) * 256);
  95         if (ret < 0) {
  96                 dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
  97                 return ret;
  98         }
  99
 100         return 0;
 101 }
 102
 103 static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
 104 {
 105         struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
 106         struct snd_soc_jack *jack = &ctx->jack;
 107         struct snd_soc_dai *codec_dai = runtime->codec_dai;
 108         struct snd_soc_component *component = codec_dai->component;
 109         int ret, jack_type;
 110
 111         /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 112         ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf, 0x1, 4, 24);
 113         if (ret < 0) {
 114                 dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 115                 return ret;
 116         }
 117
 118         /* NAU88L24 supports 4 butons headset detection
 119          * KEY_MEDIA
 120          * KEY_VOICECOMMAND
 121          * KEY_VOLUMEUP
 122          * KEY_VOLUMEDOWN
 123          */
 124         jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 125                 SND_JACK_BTN_2 | SND_JACK_BTN_3;
 126         ret = snd_soc_card_jack_new(runtime->card, "Headset", jack_type, jack,
 127                 cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
 128         if (ret) {
 129                 dev_err(runtime->dev,
 130                         "Headset Jack creation failed %d\n", ret);
 131                 return ret;
 132         }
 133         snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_MEDIA);
 134         snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 135         snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 136         snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 137
 138         nau8824_enable_jack_detect(component, jack);
 139
 140         return ret;
 141 }
 142
 143 static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 144         struct snd_pcm_hw_params *params)
 145 {
 146         struct snd_interval *rate = hw_param_interval(params,
 147                 SNDRV_PCM_HW_PARAM_RATE);
 148         struct snd_interval *channels = hw_param_interval(params,
 149                 SNDRV_PCM_HW_PARAM_CHANNELS);
 150         struct snd_mask *fmt =
 151                 hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 152
 153         /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 154         rate->min = rate->max = 48000;
 155         channels->min = channels->max = 2;
 156
 157         /* set SSP2 to 24-bit */
 158         snd_mask_none(fmt);
 159         params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 160
 161         return 0;
 162 }
 163
 164 static int cht_aif1_startup(struct snd_pcm_substream *substream)
 165 {
 166         return snd_pcm_hw_constraint_single(substream->runtime,
 167                 SNDRV_PCM_HW_PARAM_RATE, 48000);
 168 }
 169
 170 static const struct snd_soc_ops cht_aif1_ops = {
 171         .startup = cht_aif1_startup,
 172 };
 173
 174 static const struct snd_soc_ops cht_be_ssp2_ops = {
 175         .hw_params = cht_aif1_hw_params,
 176 };
 177
 178 static struct snd_soc_dai_link cht_dailink[] = {
 179         /* Front End DAI links */
 180         [MERR_DPCM_AUDIO] = {
 181                 .name = "Audio Port",
 182                 .stream_name = "Audio",
 183                 .cpu_dai_name = "media-cpu-dai",
 184                 .codec_dai_name = "snd-soc-dummy-dai",
 185                 .codec_name = "snd-soc-dummy",
 186                 .platform_name = "sst-mfld-platform",
 187                 .nonatomic = true,
 188                 .dynamic = 1,
 189                 .dpcm_playback = 1,
 190                 .dpcm_capture = 1,
 191                 .ops = &cht_aif1_ops,
 192         },
 193         [MERR_DPCM_DEEP_BUFFER] = {
 194                 .name = "Deep-Buffer Audio Port",
 195                 .stream_name = "Deep-Buffer Audio",
 196                 .cpu_dai_name = "deepbuffer-cpu-dai",
 197                 .codec_dai_name = "snd-soc-dummy-dai",
 198                 .codec_name = "snd-soc-dummy",
 199                 .platform_name = "sst-mfld-platform",
 200                 .nonatomic = true,
 201                 .dynamic = 1,
 202                 .dpcm_playback = 1,
 203                 .ops = &cht_aif1_ops,
 204         },
 205         [MERR_DPCM_COMPR] = {
 206                 .name = "Compressed Port",
 207                 .stream_name = "Compress",
 208                 .cpu_dai_name = "compress-cpu-dai",
 209                 .codec_dai_name = "snd-soc-dummy-dai",
 210                 .codec_name = "snd-soc-dummy",
 211                 .platform_name = "sst-mfld-platform",
 212         },
 213         /* Back End DAI links */
 214         {
 215                 /* SSP2 - Codec */
 216                 .name = "SSP2-Codec",
 217                 .id = 1,
 218                 .cpu_dai_name = "ssp2-port",
 219                 .platform_name = "sst-mfld-platform",
 220                 .no_pcm = 1,
 221                 .codec_dai_name = NAU8824_CODEC_DAI,
 222                 .codec_name = "i2c-10508824:00",
 223                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 224                         | SND_SOC_DAIFMT_CBS_CFS,
 225                 .init = cht_codec_init,
 226                 .be_hw_params_fixup = cht_codec_fixup,
 227                 .dpcm_playback = 1,
 228                 .dpcm_capture = 1,
 229                 .ops = &cht_be_ssp2_ops,
 230         },
 231 };
 232
 233 /* SoC card */
 234 static struct snd_soc_card snd_soc_card_cht = {
 235         .name = "chtnau8824",
 236         .owner = THIS_MODULE,
 237         .dai_link = cht_dailink,
 238         .num_links = ARRAY_SIZE(cht_dailink),
 239         .dapm_widgets = cht_dapm_widgets,
 240         .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 241         .dapm_routes = cht_audio_map,
 242         .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 243         .controls = cht_mc_controls,
 244         .num_controls = ARRAY_SIZE(cht_mc_controls),
 245 };
 246
 247 static int snd_cht_mc_probe(struct platform_device *pdev)
 248 {
 249         struct cht_mc_private *drv;
 250         struct snd_soc_acpi_mach *mach;
 251         const char *platform_name;
 252         int ret_val;
 253
 254         drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 255         if (!drv)
 256                 return -ENOMEM;
 257         snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 258
 259         /* override plaform name, if required */
 260         mach = (&pdev->dev)->platform_data;
 261         platform_name = mach->mach_params.platform;
 262
 263         ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
 264                                                         platform_name);
 265         if (ret_val)
 266                 return ret_val;
 267
 268         /* register the soc card */
 269         snd_soc_card_cht.dev = &pdev->dev;
 270         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 271         if (ret_val) {
 272                 dev_err(&pdev->dev,
 273                         "snd_soc_register_card failed %d\n", ret_val);
 274                 return ret_val;
 275         }
 276         platform_set_drvdata(pdev, &snd_soc_card_cht);
 277
 278         return ret_val;
 279 }
 280
 281 static struct platform_driver snd_cht_mc_driver = {
 282         .driver = {
 283                 .name = "cht-bsw-nau8824",
 284         },
 285         .probe = snd_cht_mc_probe,
 286 };
 287
 288 module_platform_driver(snd_cht_mc_driver);
 289
 290 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 291 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
 292 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
 293 MODULE_LICENSE("GPL v2");
 294 MODULE_ALIAS("platform:cht-bsw-nau8824");