target/linux/brcm2708/patches-4.14/950-0073-Add-Support-for-JustBoom-Audio-boards.patch

   1 From c86b5cd0c5a5ba9b9937bc9cecbc3b25a4f037ad Mon Sep 17 00:00:00 2001
   2 From: Aaron Shaw <shawaj@gmail.com>
   3 Date: Thu, 7 Apr 2016 21:26:21 +0100
   4 Subject: [PATCH 073/454] Add Support for JustBoom Audio boards
   5
   6 justboom-dac: Adjust for ALSA API change
   7
   8 As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
   9 rather than a struct snd_soc_codec *.
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  12 ---
  13  sound/soc/bcm/Kconfig         |  14 +++
  14  sound/soc/bcm/Makefile        |   4 +
  15  sound/soc/bcm/justboom-dac.c  | 163 +++++++++++++++++++++++++
  16  sound/soc/bcm/justboom-digi.c | 216 ++++++++++++++++++++++++++++++++++
  17  4 files changed, 397 insertions(+)
  18  create mode 100644 sound/soc/bcm/justboom-dac.c
  19  create mode 100644 sound/soc/bcm/justboom-digi.c
  20
  21 --- a/sound/soc/bcm/Kconfig
  22 +++ b/sound/soc/bcm/Kconfig
  23 @@ -60,6 +60,20 @@ config SND_BCM2708_SOC_RPI_PROTO
  24         help
  25           Say Y or M if you want to add support for Audio Codec Board PROTO (WM8731).
  26
  27 +config SND_BCM2708_SOC_JUSTBOOM_DAC
  28 +       tristate "Support for JustBoom DAC"
  29 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  30 +       select SND_SOC_PCM512x
  31 +       help
  32 +         Say Y or M if you want to add support for JustBoom DAC.
  33 +
  34 +config SND_BCM2708_SOC_JUSTBOOM_DIGI
  35 +       tristate "Support for JustBoom Digi"
  36 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  37 +       select SND_SOC_WM8804
  38 +       help
  39 +         Say Y or M if you want to add support for JustBoom Digi.
  40 +
  41  config SND_BCM2708_SOC_IQAUDIO_DAC
  42         tristate "Support for IQaudIO-DAC"
  43         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  44 --- a/sound/soc/bcm/Makefile
  45 +++ b/sound/soc/bcm/Makefile
  46 @@ -13,6 +13,8 @@ snd-soc-hifiberry-amp-objs := hifiberry_
  47  snd-soc-hifiberry-dac-objs := hifiberry_dac.o
  48  snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
  49  snd-soc-hifiberry-digi-objs := hifiberry_digi.o
  50 +snd-soc-justboom-dac-objs := justboom-dac.o
  51 +snd-soc-justboom-digi-objs := justboom-digi.o
  52  snd-soc-rpi-dac-objs := rpi-dac.o
  53  snd-soc-rpi-proto-objs := rpi-proto.o
  54  snd-soc-iqaudio-dac-objs := iqaudio-dac.o
  55 @@ -22,6 +24,8 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_A
  56  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
  57  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
  58  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
  59 +obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
  60 +obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI) += snd-soc-justboom-digi.o
  61  obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
  62  obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
  63  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
  64 --- /dev/null
  65 +++ b/sound/soc/bcm/justboom-dac.c
  66 @@ -0,0 +1,163 @@
  67 +/*
  68 + * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
  69 + *
  70 + * Author:     Milan Neskovic
  71 + *             Copyright 2016
  72 + *             based on code by Daniel Matuschek <info@crazy-audio.com>
  73 + *             based on code by Florian Meier <florian.meier@koalo.de>
  74 + *
  75 + * This program is free software; you can redistribute it and/or
  76 + * modify it under the terms of the GNU General Public License
  77 + * version 2 as published by the Free Software Foundation.
  78 + *
  79 + * This program is distributed in the hope that it will be useful, but
  80 + * WITHOUT ANY WARRANTY; without even the implied warranty of
  81 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  82 + * General Public License for more details.
  83 + */
  84 +
  85 +#include <linux/module.h>
  86 +#include <linux/platform_device.h>
  87 +
  88 +#include <sound/core.h>
  89 +#include <sound/pcm.h>
  90 +#include <sound/pcm_params.h>
  91 +#include <sound/soc.h>
  92 +#include <sound/jack.h>
  93 +
  94 +#include "../codecs/pcm512x.h"
  95 +
  96 +static bool digital_gain_0db_limit = true;
  97 +
  98 +static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
  99 +{
 100 +       struct snd_soc_codec *codec = rtd->codec;
 101 +       snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
 102 +       snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
 103 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 104 +
 105 +       if (digital_gain_0db_limit)
 106 +       {
 107 +               int ret;
 108 +               struct snd_soc_card *card = rtd->card;
 109 +
 110 +               ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
 111 +               if (ret < 0)
 112 +                       dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
 113 +       }
 114 +
 115 +       return 0;
 116 +}
 117 +
 118 +static int snd_rpi_justboom_dac_hw_params(struct snd_pcm_substream *substream,
 119 +                                      struct snd_pcm_hw_params *params)
 120 +{
 121 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 122 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 123 +       /*return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);*/
 124 +       unsigned int sample_bits =
 125 +               snd_pcm_format_physical_width(params_format(params));
 126 +       return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
 127 +}
 128 +
 129 +static int snd_rpi_justboom_dac_startup(struct snd_pcm_substream *substream) {
 130 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 131 +       struct snd_soc_codec *codec = rtd->codec;
 132 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 133 +       return 0;
 134 +}
 135 +
 136 +static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) {
 137 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 138 +       struct snd_soc_codec *codec = rtd->codec;
 139 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
 140 +}
 141 +
 142 +/* machine stream operations */
 143 +static struct snd_soc_ops snd_rpi_justboom_dac_ops = {
 144 +       .hw_params = snd_rpi_justboom_dac_hw_params,
 145 +       .startup = snd_rpi_justboom_dac_startup,
 146 +       .shutdown = snd_rpi_justboom_dac_shutdown,
 147 +};
 148 +
 149 +static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
 150 +{
 151 +       .name           = "JustBoom DAC",
 152 +       .stream_name    = "JustBoom DAC HiFi",
 153 +       .cpu_dai_name   = "bcm2708-i2s.0",
 154 +       .codec_dai_name = "pcm512x-hifi",
 155 +       .platform_name  = "bcm2708-i2s.0",
 156 +       .codec_name     = "pcm512x.1-004d",
 157 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 158 +                               SND_SOC_DAIFMT_CBS_CFS,
 159 +       .ops            = &snd_rpi_justboom_dac_ops,
 160 +       .init           = snd_rpi_justboom_dac_init,
 161 +},
 162 +};
 163 +
 164 +/* audio machine driver */
 165 +static struct snd_soc_card snd_rpi_justboom_dac = {
 166 +       .name         = "snd_rpi_justboom_dac",
 167 +       .driver_name  = "JustBoomDac",
 168 +       .owner        = THIS_MODULE,
 169 +       .dai_link     = snd_rpi_justboom_dac_dai,
 170 +       .num_links    = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
 171 +};
 172 +
 173 +static int snd_rpi_justboom_dac_probe(struct platform_device *pdev)
 174 +{
 175 +       int ret = 0;
 176 +
 177 +       snd_rpi_justboom_dac.dev = &pdev->dev;
 178 +
 179 +       if (pdev->dev.of_node) {
 180 +           struct device_node *i2s_node;
 181 +           struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_dai[0];
 182 +           i2s_node = of_parse_phandle(pdev->dev.of_node,
 183 +                                       "i2s-controller", 0);
 184 +
 185 +           if (i2s_node) {
 186 +                       dai->cpu_dai_name = NULL;
 187 +                       dai->cpu_of_node = i2s_node;
 188 +                       dai->platform_name = NULL;
 189 +                       dai->platform_of_node = i2s_node;
 190 +           }
 191 +
 192 +           digital_gain_0db_limit = !of_property_read_bool(
 193 +                       pdev->dev.of_node, "justboom,24db_digital_gain");
 194 +       }
 195 +
 196 +       ret = snd_soc_register_card(&snd_rpi_justboom_dac);
 197 +       if (ret && ret != -EPROBE_DEFER)
 198 +               dev_err(&pdev->dev,
 199 +                       "snd_soc_register_card() failed: %d\n", ret);
 200 +
 201 +       return ret;
 202 +}
 203 +
 204 +static int snd_rpi_justboom_dac_remove(struct platform_device *pdev)
 205 +{
 206 +       return snd_soc_unregister_card(&snd_rpi_justboom_dac);
 207 +}
 208 +
 209 +static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
 210 +       { .compatible = "justboom,justboom-dac", },
 211 +       {},
 212 +};
 213 +MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
 214 +
 215 +static struct platform_driver snd_rpi_justboom_dac_driver = {
 216 +       .driver = {
 217 +               .name   = "snd-rpi-justboom-dac",
 218 +               .owner  = THIS_MODULE,
 219 +               .of_match_table = snd_rpi_justboom_dac_of_match,
 220 +       },
 221 +       .probe          = snd_rpi_justboom_dac_probe,
 222 +       .remove         = snd_rpi_justboom_dac_remove,
 223 +};
 224 +
 225 +module_platform_driver(snd_rpi_justboom_dac_driver);
 226 +
 227 +MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
 228 +MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
 229 +MODULE_LICENSE("GPL v2");
 230 --- /dev/null
 231 +++ b/sound/soc/bcm/justboom-digi.c
 232 @@ -0,0 +1,216 @@
 233 +/*
 234 + * ASoC Driver for JustBoom Raspberry Pi Digi HAT Sound Card
 235 + *
 236 + * Author:     Milan Neskovic
 237 + *             Copyright 2016
 238 + *             based on code by Daniel Matuschek <info@crazy-audio.com>
 239 + *             based on code by Florian Meier <florian.meier@koalo.de>
 240 + *
 241 + * This program is free software; you can redistribute it and/or
 242 + * modify it under the terms of the GNU General Public License
 243 + * version 2 as published by the Free Software Foundation.
 244 + *
 245 + * This program is distributed in the hope that it will be useful, but
 246 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 247 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 248 + * General Public License for more details.
 249 + */
 250 +
 251 +#include <linux/module.h>
 252 +#include <linux/platform_device.h>
 253 +
 254 +#include <sound/core.h>
 255 +#include <sound/pcm.h>
 256 +#include <sound/pcm_params.h>
 257 +#include <sound/soc.h>
 258 +#include <sound/jack.h>
 259 +
 260 +#include "../codecs/wm8804.h"
 261 +
 262 +static int snd_rpi_justboom_digi_init(struct snd_soc_pcm_runtime *rtd)
 263 +{
 264 +       struct snd_soc_codec *codec = rtd->codec;
 265 +
 266 +       /* enable TX output */
 267 +       snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
 268 +
 269 +       return 0;
 270 +}
 271 +
 272 +static int snd_rpi_justboom_digi_startup(struct snd_pcm_substream *substream) {
 273 +       /* turn on digital output */
 274 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 275 +       struct snd_soc_codec *codec = rtd->codec;
 276 +       snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
 277 +       return 0;
 278 +}
 279 +
 280 +static void snd_rpi_justboom_digi_shutdown(struct snd_pcm_substream *substream) {
 281 +       /* turn off output */
 282 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 283 +       struct snd_soc_codec *codec = rtd->codec;
 284 +       snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
 285 +}
 286 +
 287 +static int snd_rpi_justboom_digi_hw_params(struct snd_pcm_substream *substream,
 288 +                                      struct snd_pcm_hw_params *params)
 289 +{
 290 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 291 +       struct snd_soc_dai *codec_dai = rtd->codec_dai;
 292 +       struct snd_soc_codec *codec = rtd->codec;
 293 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 294 +
 295 +       int sysclk = 27000000; /* This is fixed on this board */
 296 +
 297 +       long mclk_freq=0;
 298 +       int mclk_div=1;
 299 +       int sampling_freq=1;
 300 +
 301 +       int ret;
 302 +
 303 +       int samplerate = params_rate(params);
 304 +
 305 +       if (samplerate<=96000) {
 306 +               mclk_freq=samplerate*256;
 307 +               mclk_div=WM8804_MCLKDIV_256FS;
 308 +       } else {
 309 +               mclk_freq=samplerate*128;
 310 +               mclk_div=WM8804_MCLKDIV_128FS;
 311 +       }
 312 +
 313 +       switch (samplerate) {
 314 +               case 32000:
 315 +                       sampling_freq=0x03;
 316 +                       break;
 317 +               case 44100:
 318 +                       sampling_freq=0x00;
 319 +                       break;
 320 +               case 48000:
 321 +                       sampling_freq=0x02;
 322 +                       break;
 323 +               case 88200:
 324 +                       sampling_freq=0x08;
 325 +                       break;
 326 +               case 96000:
 327 +                       sampling_freq=0x0a;
 328 +                       break;
 329 +               case 176400:
 330 +                       sampling_freq=0x0c;
 331 +                       break;
 332 +               case 192000:
 333 +                       sampling_freq=0x0e;
 334 +                       break;
 335 +               default:
 336 +                       dev_err(codec->dev,
 337 +                       "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
 338 +                       samplerate);
 339 +       }
 340 +
 341 +       snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
 342 +       snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
 343 +
 344 +       ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
 345 +                                       sysclk, SND_SOC_CLOCK_OUT);
 346 +       if (ret < 0) {
 347 +               dev_err(codec->dev,
 348 +               "Failed to set WM8804 SYSCLK: %d\n", ret);
 349 +               return ret;
 350 +       }
 351 +
 352 +       /* Enable TX output */
 353 +       snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
 354 +
 355 +       /* Power on */
 356 +       snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
 357 +
 358 +       /* set sampling frequency status bits */
 359 +       snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
 360 +
 361 +       return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
 362 +}
 363 +
 364 +/* machine stream operations */
 365 +static struct snd_soc_ops snd_rpi_justboom_digi_ops = {
 366 +       .hw_params = snd_rpi_justboom_digi_hw_params,
 367 +        .startup = snd_rpi_justboom_digi_startup,
 368 +        .shutdown = snd_rpi_justboom_digi_shutdown,
 369 +};
 370 +
 371 +static struct snd_soc_dai_link snd_rpi_justboom_digi_dai[] = {
 372 +{
 373 +       .name           = "JustBoom Digi",
 374 +       .stream_name    = "JustBoom Digi HiFi",
 375 +       .cpu_dai_name   = "bcm2708-i2s.0",
 376 +       .codec_dai_name = "wm8804-spdif",
 377 +       .platform_name  = "bcm2708-i2s.0",
 378 +       .codec_name     = "wm8804.1-003b",
 379 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 380 +                               SND_SOC_DAIFMT_CBM_CFM,
 381 +       .ops            = &snd_rpi_justboom_digi_ops,
 382 +       .init           = snd_rpi_justboom_digi_init,
 383 +},
 384 +};
 385 +
 386 +/* audio machine driver */
 387 +static struct snd_soc_card snd_rpi_justboom_digi = {
 388 +       .name         = "snd_rpi_justboom_digi",
 389 +       .driver_name  = "JustBoomDigi",
 390 +       .owner        = THIS_MODULE,
 391 +       .dai_link     = snd_rpi_justboom_digi_dai,
 392 +       .num_links    = ARRAY_SIZE(snd_rpi_justboom_digi_dai),
 393 +};
 394 +
 395 +static int snd_rpi_justboom_digi_probe(struct platform_device *pdev)
 396 +{
 397 +       int ret = 0;
 398 +
 399 +       snd_rpi_justboom_digi.dev = &pdev->dev;
 400 +
 401 +       if (pdev->dev.of_node) {
 402 +           struct device_node *i2s_node;
 403 +           struct snd_soc_dai_link *dai = &snd_rpi_justboom_digi_dai[0];
 404 +           i2s_node = of_parse_phandle(pdev->dev.of_node,
 405 +                                       "i2s-controller", 0);
 406 +
 407 +           if (i2s_node) {
 408 +                       dai->cpu_dai_name = NULL;
 409 +                       dai->cpu_of_node = i2s_node;
 410 +                       dai->platform_name = NULL;
 411 +                       dai->platform_of_node = i2s_node;
 412 +           }
 413 +       }
 414 +
 415 +       ret = snd_soc_register_card(&snd_rpi_justboom_digi);
 416 +       if (ret && ret != -EPROBE_DEFER)
 417 +               dev_err(&pdev->dev,
 418 +                       "snd_soc_register_card() failed: %d\n", ret);
 419 +
 420 +       return ret;
 421 +}
 422 +
 423 +static int snd_rpi_justboom_digi_remove(struct platform_device *pdev)
 424 +{
 425 +       return snd_soc_unregister_card(&snd_rpi_justboom_digi);
 426 +}
 427 +
 428 +static const struct of_device_id snd_rpi_justboom_digi_of_match[] = {
 429 +       { .compatible = "justboom,justboom-digi", },
 430 +       {},
 431 +};
 432 +MODULE_DEVICE_TABLE(of, snd_rpi_justboom_digi_of_match);
 433 +
 434 +static struct platform_driver snd_rpi_justboom_digi_driver = {
 435 +       .driver = {
 436 +               .name   = "snd-rpi-justboom-digi",
 437 +               .owner  = THIS_MODULE,
 438 +               .of_match_table = snd_rpi_justboom_digi_of_match,
 439 +       },
 440 +       .probe          = snd_rpi_justboom_digi_probe,
 441 +       .remove         = snd_rpi_justboom_digi_remove,
 442 +};
 443 +
 444 +module_platform_driver(snd_rpi_justboom_digi_driver);
 445 +
 446 +MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
 447 +MODULE_DESCRIPTION("ASoC Driver for JustBoom PI Digi HAT Sound Card");
 448 +MODULE_LICENSE("GPL v2");