linux/sound/soc/intel/boards/cht_bsw_nau8824.c
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   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
  33struct cht_mc_private {
  34        struct snd_soc_jack jack;
  35};
  36
  37static 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
  48static 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
  55static 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
  72static 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
  79static 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
 102static 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
 142static 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
 163static 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
 169static const struct snd_soc_ops cht_aif1_ops = {
 170        .startup = cht_aif1_startup,
 171};
 172
 173static const struct snd_soc_ops cht_be_ssp2_ops = {
 174        .hw_params = cht_aif1_hw_params,
 175};
 176
 177static 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 */
 233static 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
 246static 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
 269static struct platform_driver snd_cht_mc_driver = {
 270        .driver = {
 271                .name = "cht-bsw-nau8824",
 272        },
 273        .probe = snd_cht_mc_probe,
 274};
 275
 276module_platform_driver(snd_cht_mc_driver);
 277
 278MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 279MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
 280MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
 281MODULE_LICENSE("GPL v2");
 282MODULE_ALIAS("platform:cht-bsw-nau8824");
 283