sound/soc/intel/boards/cht_bsw_nau8824.c

   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
  26 struct cht_mc_private {
  27         struct snd_soc_jack jack;
  28 };
  29
  30 static 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
  41 static 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
  48 static 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
  65 static 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
  72 static 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
  95 static 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
 135 static 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
 156 static 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
 162 static const struct snd_soc_ops cht_aif1_ops = {
 163         .startup = cht_aif1_startup,
 164 };
 165
 166 static const struct snd_soc_ops cht_be_ssp2_ops = {
 167         .hw_params = cht_aif1_hw_params,
 168 };
 169
 170 SND_SOC_DAILINK_DEF(dummy,
 171         DAILINK_COMP_ARRAY(COMP_DUMMY()));
 172
 173 SND_SOC_DAILINK_DEF(media,
 174         DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
 175
 176 SND_SOC_DAILINK_DEF(deepbuffer,
 177         DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
 178
 179 SND_SOC_DAILINK_DEF(ssp2_port,
 180         DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
 181 SND_SOC_DAILINK_DEF(ssp2_codec,
 182         DAILINK_COMP_ARRAY(COMP_CODEC("i2c-10508824:00",
 183                                       NAU8824_CODEC_DAI)));
 184
 185 SND_SOC_DAILINK_DEF(platform,
 186         DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
 187
 188 static struct snd_soc_dai_link cht_dailink[] = {
 189         /* Front End DAI links */
 190         [MERR_DPCM_AUDIO] = {
 191                 .name = "Audio Port",
 192                 .stream_name = "Audio",
 193                 .nonatomic = true,
 194                 .dynamic = 1,
 195                 .dpcm_playback = 1,
 196                 .dpcm_capture = 1,
 197                 .ops = &cht_aif1_ops,
 198                 SND_SOC_DAILINK_REG(media, dummy, platform),
 199         },
 200         [MERR_DPCM_DEEP_BUFFER] = {
 201                 .name = "Deep-Buffer Audio Port",
 202                 .stream_name = "Deep-Buffer Audio",
 203                 .nonatomic = true,
 204                 .dynamic = 1,
 205                 .dpcm_playback = 1,
 206                 .ops = &cht_aif1_ops,
 207                 SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
 208         },
 209         /* Back End DAI links */
 210         {
 211                 /* SSP2 - Codec */
 212                 .name = "SSP2-Codec",
 213                 .id = 0,
 214                 .no_pcm = 1,
 215                 .dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF
 216                         | SND_SOC_DAIFMT_CBS_CFS,
 217                 .init = cht_codec_init,
 218                 .be_hw_params_fixup = cht_codec_fixup,
 219                 .dpcm_playback = 1,
 220                 .dpcm_capture = 1,
 221                 .ops = &cht_be_ssp2_ops,
 222                 SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
 223         },
 224 };
 225
 226 /* use space before codec name to simplify card ID, and simplify driver name */
 227 #define SOF_CARD_NAME "bytcht nau8824" /* card name will be 'sof-bytcht nau8824 */
 228 #define SOF_DRIVER_NAME "SOF"
 229
 230 #define CARD_NAME "chtnau8824"
 231 #define DRIVER_NAME NULL /* card name will be used for driver name */
 232
 233 /* SoC card */
 234 static struct snd_soc_card snd_soc_card_cht = {
 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         struct snd_soc_acpi_mach *mach;
 250         const char *platform_name;
 251         bool sof_parent;
 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         snd_soc_card_cht.dev = &pdev->dev;
 261         mach = pdev->dev.platform_data;
 262         platform_name = mach->mach_params.platform;
 263
 264         ret_val = snd_soc_fixup_dai_links_platform_name(&snd_soc_card_cht,
 265                                                         platform_name);
 266         if (ret_val)
 267                 return ret_val;
 268
 269         sof_parent = snd_soc_acpi_sof_parent(&pdev->dev);
 270
 271         /* set card and driver name */
 272         if (sof_parent) {
 273                 snd_soc_card_cht.name = SOF_CARD_NAME;
 274                 snd_soc_card_cht.driver_name = SOF_DRIVER_NAME;
 275         } else {
 276                 snd_soc_card_cht.name = CARD_NAME;
 277                 snd_soc_card_cht.driver_name = DRIVER_NAME;
 278         }
 279
 280         /* set pm ops */
 281         if (sof_parent)
 282                 pdev->dev.driver->pm = &snd_soc_pm_ops;
 283
 284         /* register the soc card */
 285         ret_val = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_cht);
 286         if (ret_val) {
 287                 dev_err(&pdev->dev,
 288                         "snd_soc_register_card failed %d\n", ret_val);
 289                 return ret_val;
 290         }
 291         platform_set_drvdata(pdev, &snd_soc_card_cht);
 292
 293         return ret_val;
 294 }
 295
 296 static struct platform_driver snd_cht_mc_driver = {
 297         .driver = {
 298                 .name = "cht-bsw-nau8824",
 299         },
 300         .probe = snd_cht_mc_probe,
 301 };
 302
 303 module_platform_driver(snd_cht_mc_driver);
 304
 305 MODULE_DESCRIPTION("ASoC Intel(R) Baytrail CR Machine driver");
 306 MODULE_AUTHOR("Wang, Joseph C <joequant@gmail.com>");
 307 MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
 308 MODULE_LICENSE("GPL v2");
 309 MODULE_ALIAS("platform:cht-bsw-nau8824");