git.librecmc.org Git - oweals/openwrt.git/blob

   1 From 9dc67d61a5cd72eb80482aa1540e08a51e37172c Mon Sep 17 00:00:00 2001
   2 From: Matt Flax <flatmax@flatmax.org>
   3 Date: Wed, 8 Mar 2017 20:04:13 +1100
   4 Subject: [PATCH 086/454] Add support for the AudioInjector.net Octo sound card
   5
   6 AudioInjector Octo: sample rates, regulators, reset
   7
   8 This patch adds new sample rates to the Audioinjector Octo sound card. The
   9 new supported rates are (in kHz) :
  10 96, 48, 32, 24, 16, 8, 88.2, 44.1, 29.4, 22.05, 14.7
  11
  12 Reference the bcm270x DT regulators in the overlay.
  13
  14 This patch adds a reset GPIO for the AudioInjector.net octo sound card.
  15
  16 Audioinjector octo : Make the playback and capture symmetric
  17
  18 This patch ensures that the sample rate and channel count of the audioinjector
  19 octo sound card are symmetric.
  20 ---
  21  sound/soc/bcm/Kconfig                        |   7 +
  22  sound/soc/bcm/Makefile                       |   2 +
  23  sound/soc/bcm/audioinjector-octo-soundcard.c | 341 +++++++++++++++++++
  24  3 files changed, 350 insertions(+)
  25  create mode 100644 sound/soc/bcm/audioinjector-octo-soundcard.c
  26
  27 --- a/sound/soc/bcm/Kconfig
  28 +++ b/sound/soc/bcm/Kconfig
  29 @@ -119,6 +119,13 @@ config SND_AUDIOINJECTOR_PI_SOUNDCARD
  30         help
  31           Say Y or M if you want to add support for audioinjector.net Pi Hat
  32
  33 +config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
  34 +       tristate "Support for audioinjector.net Octo channel (Hat) soundcard"
  35 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  36 +       select SND_SOC_CS42XX8_I2C
  37 +       help
  38 +         Say Y or M if you want to add support for audioinjector.net octo add on
  39 +
  40  config SND_DIGIDAC1_SOUNDCARD
  41          tristate "Support for Red Rocks Audio DigiDAC1"
  42          depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  43 --- a/sound/soc/bcm/Makefile
  44 +++ b/sound/soc/bcm/Makefile
  45 @@ -23,6 +23,7 @@ snd-soc-iqaudio-dac-objs := iqaudio-dac.
  46  snd-soc-iqaudio-digi-objs := iqaudio_digi.o
  47  snd-soc-raspidac3-objs := raspidac3.o
  48  snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
  49 +snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
  50  snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
  51  snd-soc-dionaudio-loco-objs := dionaudio_loco.o
  52  snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
  53 @@ -46,6 +47,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC
  54  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
  55  obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
  56  obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
  57 +obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
  58  obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
  59  obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
  60  obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
  61 --- /dev/null
  62 +++ b/sound/soc/bcm/audioinjector-octo-soundcard.c
  63 @@ -0,0 +1,341 @@
  64 +/*
  65 + * ASoC Driver for AudioInjector Pi octo channel soundcard (hat)
  66 + *
  67 + *  Created on: 27-October-2016
  68 + *      Author: flatmax@flatmax.org
  69 + *              based on audioinjector-pi-soundcard.c
  70 + *
  71 + * Copyright (C) 2016 Flatmax Pty. Ltd.
  72 + *
  73 + * This program is free software; you can redistribute it and/or
  74 + * modify it under the terms of the GNU General Public License
  75 + * version 2 as published by the Free Software Foundation.
  76 + *
  77 + * This program is distributed in the hope that it will be useful, but
  78 + * WITHOUT ANY WARRANTY; without even the implied warranty of
  79 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  80 + * General Public License for more details.
  81 + */
  82 +
  83 +#include <linux/module.h>
  84 +#include <linux/types.h>
  85 +#include <linux/gpio/consumer.h>
  86 +
  87 +#include <sound/core.h>
  88 +#include <sound/soc.h>
  89 +#include <sound/pcm_params.h>
  90 +#include <sound/control.h>
  91 +
  92 +static struct gpio_descs *mult_gpios;
  93 +static struct gpio_desc *codec_rst_gpio;
  94 +static unsigned int audioinjector_octo_rate;
  95 +
  96 +static const unsigned int audioinjector_octo_rates[] = {
  97 +       96000, 48000, 32000, 24000, 16000, 8000, 88200, 44100, 29400, 22050, 14700,
  98 +};
  99 +
 100 +static struct snd_pcm_hw_constraint_list audioinjector_octo_constraints = {
 101 +       .list = audioinjector_octo_rates,
 102 +       .count = ARRAY_SIZE(audioinjector_octo_rates),
 103 +};
 104 +
 105 +static int audioinjector_octo_dai_init(struct snd_soc_pcm_runtime *rtd)
 106 +{
 107 +       return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, 64);
 108 +}
 109 +
 110 +static int audioinjector_octo_startup(struct snd_pcm_substream *substream)
 111 +{
 112 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 113 +       rtd->cpu_dai->driver->playback.channels_min = 8;
 114 +       rtd->cpu_dai->driver->playback.channels_max = 8;
 115 +       rtd->cpu_dai->driver->capture.channels_min = 8;
 116 +       rtd->cpu_dai->driver->capture.channels_max = 8;
 117 +       rtd->codec_dai->driver->capture.channels_max = 8;
 118 +
 119 +       snd_pcm_hw_constraint_list(substream->runtime, 0,
 120 +                               SNDRV_PCM_HW_PARAM_RATE,
 121 +                               &audioinjector_octo_constraints);
 122 +
 123 +       return 0;
 124 +}
 125 +
 126 +static void audioinjector_octo_shutdown(struct snd_pcm_substream *substream)
 127 +{
 128 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 129 +       rtd->cpu_dai->driver->playback.channels_min = 2;
 130 +       rtd->cpu_dai->driver->playback.channels_max = 2;
 131 +       rtd->cpu_dai->driver->capture.channels_min = 2;
 132 +       rtd->cpu_dai->driver->capture.channels_max = 2;
 133 +       rtd->codec_dai->driver->capture.channels_max = 6;
 134 +}
 135 +
 136 +static int audioinjector_octo_hw_params(struct snd_pcm_substream *substream,
 137 +       struct snd_pcm_hw_params *params)
 138 +{
 139 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 140 +
 141 +       // set codec DAI configuration
 142 +       int ret = snd_soc_dai_set_fmt(rtd->codec_dai,
 143 +                       SND_SOC_DAIFMT_CBS_CFS|SND_SOC_DAIFMT_DSP_A|
 144 +                       SND_SOC_DAIFMT_NB_NF);
 145 +       if (ret < 0)
 146 +               return ret;
 147 +
 148 +       // set cpu DAI configuration
 149 +       ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
 150 +                       SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|
 151 +                       SND_SOC_DAIFMT_NB_NF);
 152 +       if (ret < 0)
 153 +               return ret;
 154 +
 155 +       audioinjector_octo_rate = params_rate(params);
 156 +
 157 +       // Set the correct sysclock for the codec
 158 +       switch (audioinjector_octo_rate) {
 159 +       case 96000:
 160 +       case 48000:
 161 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000,
 162 +                                                                       0);
 163 +               break;
 164 +       case 24000:
 165 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/2,
 166 +                                                                       0);
 167 +               break;
 168 +       case 32000:
 169 +       case 16000:
 170 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/3,
 171 +                                                                       0);
 172 +               break;
 173 +       case 8000:
 174 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 49152000/6,
 175 +                                                                       0);
 176 +               break;
 177 +       case 88200:
 178 +       case 44100:
 179 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400,
 180 +                                                                       0);
 181 +               break;
 182 +       case 22050:
 183 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/2,
 184 +                                                                       0);
 185 +               break;
 186 +       case 29400:
 187 +       case 14700:
 188 +               return snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 45185400/3,
 189 +                                                                       0);
 190 +               break;
 191 +       default:
 192 +               return -EINVAL;
 193 +       }
 194 +}
 195 +
 196 +static int audioinjector_octo_trigger(struct snd_pcm_substream *substream,
 197 +                                                               int cmd){
 198 +       int mult[4];
 199 +       mult[0] = 0;
 200 +       mult[1] = 0;
 201 +       mult[2] = 0;
 202 +       mult[3] = 0;
 203 +
 204 +       switch (cmd) {
 205 +       case SNDRV_PCM_TRIGGER_START:
 206 +       case SNDRV_PCM_TRIGGER_RESUME:
 207 +       case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 208 +               switch (audioinjector_octo_rate) {
 209 +               case 96000:
 210 +                       mult[3] = 1;
 211 +               case 88200:
 212 +                       mult[1] = 1;
 213 +                       mult[2] = 1;
 214 +                       break;
 215 +               case 48000:
 216 +                       mult[3] = 1;
 217 +               case 44100:
 218 +                       mult[2] = 1;
 219 +                       break;
 220 +               case 32000:
 221 +                       mult[3] = 1;
 222 +               case 29400:
 223 +                       mult[0] = 1;
 224 +                       mult[1] = 1;
 225 +                       break;
 226 +               case 24000:
 227 +                       mult[3] = 1;
 228 +               case 22050:
 229 +                       mult[1] = 1;
 230 +                       break;
 231 +               case 16000:
 232 +                       mult[3] = 1;
 233 +               case 14700:
 234 +                       mult[0] = 1;
 235 +                       break;
 236 +               case 8000:
 237 +                       mult[3] = 1;
 238 +                       break;
 239 +               default:
 240 +                       return -EINVAL;
 241 +               }
 242 +               break;
 243 +       case SNDRV_PCM_TRIGGER_STOP:
 244 +       case SNDRV_PCM_TRIGGER_SUSPEND:
 245 +       case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 246 +               break;
 247 +       default:
 248 +               return -EINVAL;
 249 +       }
 250 +       gpiod_set_array_value_cansleep(mult_gpios->ndescs, mult_gpios->desc,
 251 +                                                                       mult);
 252 +
 253 +       return 0;
 254 +}
 255 +
 256 +static struct snd_soc_ops audioinjector_octo_ops = {
 257 +       .startup        = audioinjector_octo_startup,
 258 +       .shutdown       = audioinjector_octo_shutdown,
 259 +       .hw_params = audioinjector_octo_hw_params,
 260 +       .trigger = audioinjector_octo_trigger,
 261 +};
 262 +
 263 +static struct snd_soc_dai_link audioinjector_octo_dai[] = {
 264 +       {
 265 +               .name = "AudioInjector Octo",
 266 +               .stream_name = "AudioInject-HIFI",
 267 +               .codec_dai_name = "cs42448",
 268 +               .ops = &audioinjector_octo_ops,
 269 +               .init = audioinjector_octo_dai_init,
 270 +               .symmetric_rates = 1,
 271 +               .symmetric_channels = 1,
 272 +       },
 273 +};
 274 +
 275 +static const struct snd_soc_dapm_widget audioinjector_octo_widgets[] = {
 276 +       SND_SOC_DAPM_OUTPUT("OUTPUTS0"),
 277 +       SND_SOC_DAPM_OUTPUT("OUTPUTS1"),
 278 +       SND_SOC_DAPM_OUTPUT("OUTPUTS2"),
 279 +       SND_SOC_DAPM_OUTPUT("OUTPUTS3"),
 280 +       SND_SOC_DAPM_INPUT("INPUTS0"),
 281 +       SND_SOC_DAPM_INPUT("INPUTS1"),
 282 +       SND_SOC_DAPM_INPUT("INPUTS2"),
 283 +};
 284 +
 285 +static const struct snd_soc_dapm_route audioinjector_octo_route[] = {
 286 +       /* Balanced outputs */
 287 +       {"OUTPUTS0", NULL, "AOUT1L"},
 288 +       {"OUTPUTS0", NULL, "AOUT1R"},
 289 +       {"OUTPUTS1", NULL, "AOUT2L"},
 290 +       {"OUTPUTS1", NULL, "AOUT2R"},
 291 +       {"OUTPUTS2", NULL, "AOUT3L"},
 292 +       {"OUTPUTS2", NULL, "AOUT3R"},
 293 +       {"OUTPUTS3", NULL, "AOUT4L"},
 294 +       {"OUTPUTS3", NULL, "AOUT4R"},
 295 +
 296 +       /* Balanced inputs */
 297 +       {"AIN1L", NULL, "INPUTS0"},
 298 +       {"AIN1R", NULL, "INPUTS0"},
 299 +       {"AIN2L", NULL, "INPUTS1"},
 300 +       {"AIN2R", NULL, "INPUTS1"},
 301 +       {"AIN3L", NULL, "INPUTS2"},
 302 +       {"AIN3R", NULL, "INPUTS2"},
 303 +};
 304 +
 305 +static struct snd_soc_card snd_soc_audioinjector_octo = {
 306 +       .name = "audioinjector-octo-soundcard",
 307 +       .dai_link = audioinjector_octo_dai,
 308 +       .num_links = ARRAY_SIZE(audioinjector_octo_dai),
 309 +
 310 +       .dapm_widgets = audioinjector_octo_widgets,
 311 +       .num_dapm_widgets = ARRAY_SIZE(audioinjector_octo_widgets),
 312 +       .dapm_routes = audioinjector_octo_route,
 313 +       .num_dapm_routes = ARRAY_SIZE(audioinjector_octo_route),
 314 +};
 315 +
 316 +static int audioinjector_octo_probe(struct platform_device *pdev)
 317 +{
 318 +       struct snd_soc_card *card = &snd_soc_audioinjector_octo;
 319 +       int ret;
 320 +
 321 +       card->dev = &pdev->dev;
 322 +
 323 +       if (pdev->dev.of_node) {
 324 +               struct snd_soc_dai_link *dai = &audioinjector_octo_dai[0];
 325 +               struct device_node *i2s_node =
 326 +                                       of_parse_phandle(pdev->dev.of_node,
 327 +                                                       "i2s-controller", 0);
 328 +               struct device_node *codec_node =
 329 +                                       of_parse_phandle(pdev->dev.of_node,
 330 +                                                               "codec", 0);
 331 +
 332 +               mult_gpios = devm_gpiod_get_array_optional(&pdev->dev, "mult",
 333 +                                                               GPIOD_OUT_LOW);
 334 +               if (IS_ERR(mult_gpios))
 335 +                       return PTR_ERR(mult_gpios);
 336 +
 337 +               codec_rst_gpio = devm_gpiod_get_optional(&pdev->dev, "reset",
 338 +                                                               GPIOD_OUT_LOW);
 339 +               if (IS_ERR(codec_rst_gpio))
 340 +                       return PTR_ERR(codec_rst_gpio);
 341 +
 342 +               if (codec_rst_gpio)
 343 +                       gpiod_set_value(codec_rst_gpio, 1);
 344 +               msleep(500);
 345 +               if (codec_rst_gpio)
 346 +                       gpiod_set_value(codec_rst_gpio, 0);
 347 +               msleep(500);
 348 +               if (codec_rst_gpio)
 349 +                       gpiod_set_value(codec_rst_gpio, 1);
 350 +               msleep(500);
 351 +
 352 +               if (i2s_node && codec_node) {
 353 +                       dai->cpu_dai_name = NULL;
 354 +                       dai->cpu_of_node = i2s_node;
 355 +                       dai->platform_name = NULL;
 356 +                       dai->platform_of_node = i2s_node;
 357 +                       dai->codec_name = NULL;
 358 +                       dai->codec_of_node = codec_node;
 359 +               } else
 360 +                       if (!dai->cpu_of_node) {
 361 +                               dev_err(&pdev->dev,
 362 +                               "i2s-controller missing or invalid in DT\n");
 363 +                               return -EINVAL;
 364 +                       } else {
 365 +                               dev_err(&pdev->dev,
 366 +                               "Property 'codec' missing or invalid\n");
 367 +                               return -EINVAL;
 368 +                       }
 369 +       }
 370 +
 371 +       ret = snd_soc_register_card(card);
 372 +       if (ret != 0)
 373 +               dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
 374 +       return ret;
 375 +}
 376 +
 377 +static int audioinjector_octo_remove(struct platform_device *pdev)
 378 +{
 379 +       struct snd_soc_card *card = platform_get_drvdata(pdev);
 380 +
 381 +       return snd_soc_unregister_card(card);
 382 +}
 383 +
 384 +static const struct of_device_id audioinjector_octo_of_match[] = {
 385 +       { .compatible = "ai,audioinjector-octo-soundcard", },
 386 +       {},
 387 +};
 388 +MODULE_DEVICE_TABLE(of, audioinjector_octo_of_match);
 389 +
 390 +static struct platform_driver audioinjector_octo_driver = {
 391 +       .driver = {
 392 +               .name                   = "audioinjector-octo",
 393 +               .owner                  = THIS_MODULE,
 394 +               .of_match_table = audioinjector_octo_of_match,
 395 +       },
 396 +       .probe  = audioinjector_octo_probe,
 397 +       .remove = audioinjector_octo_remove,
 398 +};
 399 +
 400 +module_platform_driver(audioinjector_octo_driver);
 401 +MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
 402 +MODULE_DESCRIPTION("AudioInjector.net octo Soundcard");
 403 +MODULE_LICENSE("GPL v2");
 404 +MODULE_ALIAS("platform:audioinjector-octo-soundcard");