linux/sound/soc/intel/boards/cht_bsw_nau8824.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  cht-bsw-nau8824.c - ASoc Machine driver for Intel Cherryview-based
   4 *          platforms Cherrytrail and Braswell, with nau8824 codec.
   5 *
   6 *  Copyright (C) 2018 Intel Corp
   7 *  Copyright (C) 2018 Nuvoton Technology Corp
   8 *
   9 *  Author: Wang, Joseph C <joequant@gmail.com>
  10 *  Co-author: John Hsu <KCHSU0@nuvoton.com>
  11 *  This file is based on cht_bsw_rt5672.c and cht-bsw-max98090.c
  12 */
  13
  14#include <linux/module.h>
  15#include <linux/platform_device.h>
  16#include <linux/slab.h>
  17#include <sound/pcm.h>
  18#include <sound/pcm_params.h>
  19#include <sound/soc.h>
  20#include <sound/soc-acpi.h>
  21#include <sound/jack.h>
  22#include <linux/input.h>
  23#include "../atom/sst-atom-controls.h"
  24#include "../../codecs/nau8824.h"
  25
  26struct cht_mc_private {
  27        struct snd_soc_jack jack;
  28};
  29
  30static struct snd_soc_jack_pin cht_bsw_jack_pins[] = {
  31        {
  32                .pin = "Headphone",
  33                .mask = SND_JACK_HEADPHONE,
  34        },
  35        {
  36                .pin = "Headset Mic",
  37                .mask = SND_JACK_MICROPHONE,
  38        },
  39};
  40
  41static const struct snd_soc_dapm_widget cht_dapm_widgets[] = {
  42        SND_SOC_DAPM_HP("Headphone", NULL),
  43        SND_SOC_DAPM_MIC("Headset Mic", NULL),
  44        SND_SOC_DAPM_MIC("Int Mic", NULL),
  45        SND_SOC_DAPM_SPK("Ext Spk", NULL),
  46};
  47
  48static const struct snd_soc_dapm_route cht_audio_map[] = {
  49        {"Ext Spk", NULL, "SPKOUTL"},
  50        {"Ext Spk", NULL, "SPKOUTR"},
  51        {"Headphone", NULL, "HPOL"},
  52        {"Headphone", NULL, "HPOR"},
  53        {"MIC1", NULL, "Int Mic"},
  54        {"MIC2", NULL, "Int Mic"},
  55        {"HSMIC1", NULL, "Headset Mic"},
  56        {"HSMIC2", NULL, "Headset Mic"},
  57        {"Playback", NULL, "ssp2 Tx"},
  58        {"ssp2 Tx", NULL, "codec_out0"},
  59        {"ssp2 Tx", NULL, "codec_out1"},
  60        {"codec_in0", NULL, "ssp2 Rx" },
  61        {"codec_in1", NULL, "ssp2 Rx" },
  62        {"ssp2 Rx", NULL, "Capture"},
  63};
  64
  65static const struct snd_kcontrol_new cht_mc_controls[] = {
  66        SOC_DAPM_PIN_SWITCH("Headphone"),
  67        SOC_DAPM_PIN_SWITCH("Headset Mic"),
  68        SOC_DAPM_PIN_SWITCH("Int Mic"),
  69        SOC_DAPM_PIN_SWITCH("Ext Spk"),
  70};
  71
  72static int cht_aif1_hw_params(struct snd_pcm_substream *substream,
  73        struct snd_pcm_hw_params *params)
  74{
  75        struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
  76        struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
  77        int ret;
  78
  79        ret = snd_soc_dai_set_sysclk(codec_dai, NAU8824_CLK_FLL_FS, 0,
  80                SND_SOC_CLOCK_IN);
  81        if (ret < 0) {
  82                dev_err(codec_dai->dev, "can't set FS clock %d\n", ret);
  83                return ret;
  84        }
  85        ret = snd_soc_dai_set_pll(codec_dai, 0, 0, params_rate(params),
  86                params_rate(params) * 256);
  87        if (ret < 0) {
  88                dev_err(codec_dai->dev, "can't set FLL: %d\n", ret);
  89                return ret;
  90        }
  91
  92        return 0;
  93}
  94
  95static int cht_codec_init(struct snd_soc_pcm_runtime *runtime)
  96{
  97        struct cht_mc_private *ctx = snd_soc_card_get_drvdata(runtime->card);
  98        struct snd_soc_jack *jack = &ctx->jack;
  99        struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
 100        struct snd_soc_component *component = codec_dai->component;
 101        int ret, jack_type;
 102
 103        /* TDM 4 slots 24 bit, set Rx & Tx bitmask to 4 active slots */
 104        ret = snd_soc_dai_set_tdm_slot(codec_dai, 0xf, 0x1, 4, 24);
 105        if (ret < 0) {
 106                dev_err(runtime->dev, "can't set codec TDM slot %d\n", ret);
 107                return ret;
 108        }
 109
 110        /* NAU88L24 supports 4 butons headset detection
 111         * KEY_PLAYPAUSE
 112         * KEY_VOICECOMMAND
 113         * KEY_VOLUMEUP
 114         * KEY_VOLUMEDOWN
 115         */
 116        jack_type = SND_JACK_HEADSET | SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 117                SND_JACK_BTN_2 | SND_JACK_BTN_3;
 118        ret = snd_soc_card_jack_new(runtime->card, "Headset", jack_type, jack,
 119                cht_bsw_jack_pins, ARRAY_SIZE(cht_bsw_jack_pins));
 120        if (ret) {
 121                dev_err(runtime->dev,
 122                        "Headset Jack creation failed %d\n", ret);
 123                return ret;
 124        }
 125        snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
 126        snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOICECOMMAND);
 127        snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEUP);
 128        snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN);
 129
 130        nau8824_enable_jack_detect(component, jack);
 131
 132        return ret;
 133}
 134
 135static int cht_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 136        struct snd_pcm_hw_params *params)
 137{
 138        struct snd_interval *rate = hw_param_interval(params,
 139                SNDRV_PCM_HW_PARAM_RATE);
 140        struct snd_interval *channels = hw_param_interval(params,
 141                SNDRV_PCM_HW_PARAM_CHANNELS);
 142        struct snd_mask *fmt =
 143                hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT);
 144
 145        /* The DSP will covert the FE rate to 48k, stereo, 24bits */
 146        rate->min = rate->max = 48000;
 147        channels->min = channels->max = 2;
 148
 149        /* set SSP2 to 24-bit */
 150        snd_mask_none(fmt);
 151        params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
 152
 153        return 0;
 154}
 155
 156static int cht_aif1_startup(struct snd_pcm_substream *substream)
 157{
 158        return snd_pcm_hw_constraint_single(substream->runtime,
 159                SNDRV_PCM_HW_PARAM_RATE, 48000);
 160}
 161
 162static const struct snd_soc_ops cht_aif1_ops = {
 163        .startup = cht_aif1_startup,
 164};
 165
 166static const struct snd_soc_ops cht_be_ssp2_ops = {
 167        .hw_params = cht_aif1_hw_params,
 168};
 169
 170SND_SOC_DAILINK_DEF(dummy,
 171        DAILINK_COMP_ARRAY(COMP_DUMMY()));
 172
 173SND_SOC_DAILINK_DEF(media,
 174        DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
 175
 176SND_SOC_DAILINK_DEF(deepbuffer,
 177        DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
 178
 179SND_SOC_DAILINK_DEF(compress,
 180        DAILINK_COMP_ARRAY(COMP_CPU("compress-cpu-dai")));
 181
 182SND_SOC_DAILINK_DEF(ssp2_port,
 183        DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
 184SND_SOC_DAILINK_DEF(ssp2_codec,
 185        DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
 186                                      NAU8824_CODEC_DAI)));
 187
 188SND_SOC_DAILINK_DEF(platform,
 189        DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
 190
 191static struct snd_soc_dai_link cht_dailink[] = {
 192        /* Front End DAI links */
 193        [MERR_DPCM_AUDIO] = {
 194                .name = "Audio Port",
 195                .stream_name = "Audio",
 196                .nonatomic = true,
 197                .dynamic = 1,
 198                .dpcm_playback = 1,
 199                .dpcm_capture = 1,
 200                .ops = &cht_aif1_ops,
 201                SND_SOC_DAILINK_REG(media, dummy, platform),
 202        },
 203        [MERR_DPCM_DEEP_BUFFER] = {
 204                .name = "Deep-Buffer Audio Port",
 205                .stream_name = "Deep-Buffer Audio",
 206                .nonatomic = true,
 207                .dynamic = 1,
 208                .dpcm_playback = 1,
 209                .ops = &cht_aif1_ops,
 210                SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
 211        },
 212        [MERR_DPCM_COMPR] = {
 213                .name = "Compressed Port",
 214                .stream_name = "Compress",
 215                SND_SOC_DAILINK_REG(compress, dummy, platform),
 216        },
 217        /* Back End DAI links */
 218        {
 219                /* SSP2 - Codec */
 220                .name = "SSP2-Codec",
 221                .id = 1,
 222                .no_pcm = 1,
 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                SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
 231        },
 232};
 233
 234#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
 235/* use space before codec name to simplify card ID, and simplify driver name */
 236#define CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
 237#define DRIVER_NAME "SOF"
 238#else
 239#define CARD_NAME "chtnau8824"
 240#define DRIVER_NAME NULL /* card name will be used for driver name */
 241#endif
 242
 243/* SoC card */
 244static struct snd_soc_card snd_soc_card_cht = {
 245        .name = CARD_NAME,
 246        .driver_name = DRIVER_NAME,
 247        .owner = THIS_MODULE,
 248        .dai_link = cht_dailink,
 249        .num_links = ARRAY_SIZE(cht_dailink),
 250        .dapm_widgets = cht_dapm_widgets,
 251        .num_dapm_widgets = ARRAY_SIZE(cht_dapm_widgets),
 252        .dapm_routes = cht_audio_map,
 253        .num_dapm_routes = ARRAY_SIZE(cht_audio_map),
 254        .controls = cht_mc_controls,
 255        .num_controls = ARRAY_SIZE(cht_mc_controls),
 256};
 257
 258static int snd_cht_mc_probe(struct platform_device *pdev)
 259{
 260        struct cht_mc_private *drv;
 261        struct snd_soc_acpi_mach *mach;
 262        const char *platform_name;
 263        int ret_val;
 264
 265        drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
 266        if (!drv)
 267                return -ENOMEM;
 268        snd_soc_card_set_drvdata(&snd_soc_card_cht, drv);
 269
 270        /* override plaform name, if required */
 271        snd_soc_card_cht.dev = &pdev->dev;
 272        mach = pdev->dev.platform_data;
 273        platform_name = mach->mach_params.platform;
 274
 275        ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
 276                                                        platform_name);
 277        if (ret_val)
 278                return ret_val;
 279
 280        /* register the soc card */
 281        ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 282        if (ret_val) {
 283                dev_err(&pdev->dev,
 284                        "snd_soc_register_card failed %d\n", ret_val);
 285                return ret_val;
 286        }
 287        platform_set_drvdata(pdev, &snd_soc_card_cht);
 288
 289        return ret_val;
 290}
 291
 292static struct platform_driver snd_cht_mc_driver = {
 293        .driver = {
 294                .name = "cht-bsw-nau8824",
 295#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
 296                .pm = &snd_soc_pm_ops,
 297#endif
 298        },
 299        .probe = snd_cht_mc_probe,
 300};
 301
 302module_platform_driver(snd_cht_mc_driver);
 303
 304MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 305MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
 306MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
 307MODULE_LICENSE("GPL v2");
 308MODULE_ALIAS("platform:cht-bsw-nau8824");
 309