target/linux/bcm27xx/patches-5.4/950-0147-Added-IQaudIO-Pi-Codec-board-support-2969.patch

   1 From 1f912d3042032514c33736723300b3ed618ddd08 Mon Sep 17 00:00:00 2001
   2 From: IQaudIO <gordon@iqaudio.com>
   3 Date: Mon, 13 May 2019 21:53:05 +0100
   4 Subject: [PATCH] Added IQaudIO Pi-Codec board support (#2969)
   5
   6 Add support for the IQaudIO Pi-Codec board.
   7
   8 Signed-off-by: Gordon <gordon@iqaudio.com>
   9
  10 Fixed 48k timing issue
  11
  12 ASoC: iqaudio-codec: use modern dai_link style
  13
  14 Signed-off-by: Hui Wang <hui.wang@canonical.com>
  15 ---
  16  sound/soc/bcm/Kconfig         |   7 +
  17  sound/soc/bcm/Makefile        |   2 +
  18  sound/soc/bcm/iqaudio-codec.c | 274 ++++++++++++++++++++++++++++++++++
  19  3 files changed, 283 insertions(+)
  20  create mode 100644 sound/soc/bcm/iqaudio-codec.c
  21
  22 --- a/sound/soc/bcm/Kconfig
  23 +++ b/sound/soc/bcm/Kconfig
  24 @@ -104,6 +104,13 @@ config SND_BCM2708_SOC_JUSTBOOM_DIGI
  25         help
  26           Say Y or M if you want to add support for JustBoom Digi.
  27
  28 +config SND_BCM2708_SOC_IQAUDIO_CODEC
  29 +       tristate "Support for IQaudIO-CODEC"
  30 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  31 +       select SND_SOC_DA7213
  32 +       help
  33 +         Say Y or M if you want to add support for IQaudIO-CODEC.
  34 +
  35  config SND_BCM2708_SOC_IQAUDIO_DAC
  36         tristate "Support for IQaudIO-DAC"
  37         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
  38 --- a/sound/soc/bcm/Makefile
  39 +++ b/sound/soc/bcm/Makefile
  40 @@ -18,6 +18,7 @@ snd-soc-hifiberry-dacplusadc-objs := hif
  41  snd-soc-justboom-dac-objs := justboom-dac.o
  42  snd-soc-rpi-cirrus-objs := rpi-cirrus.o
  43  snd-soc-rpi-proto-objs := rpi-proto.o
  44 +snd-soc-iqaudio-codec-objs := iqaudio-codec.o
  45  snd-soc-iqaudio-dac-objs := iqaudio-dac.o
  46   snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
  47  snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
  48 @@ -41,6 +42,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_D
  49  obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
  50  obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
  51  obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
  52 +obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_CODEC) += snd-soc-iqaudio-codec.o
  53  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
  54   obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
  55  obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
  56 --- /dev/null
  57 +++ b/sound/soc/bcm/iqaudio-codec.c
  58 @@ -0,0 +1,274 @@
  59 +/*
  60 + * ASoC Driver for IQaudIO Raspberry Pi Codec board
  61 + *
  62 + * Author:     Gordon Garrity <gordon@iqaudio.com>
  63 + *             (C) Copyright IQaudio Limited, 2017-2019
  64 + *
  65 + * This program is free software; you can redistribute it and/or
  66 + * modify it under the terms of the GNU General Public License
  67 + * version 2 as published by the Free Software Foundation.
  68 + *
  69 + * This program is distributed in the hope that it will be useful, but
  70 + * WITHOUT ANY WARRANTY; without even the implied warranty of
  71 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  72 + * General Public License for more details.
  73 + */
  74 +
  75 +#include <linux/module.h>
  76 +#include <linux/gpio/consumer.h>
  77 +#include <linux/platform_device.h>
  78 +
  79 +#include <sound/core.h>
  80 +#include <sound/pcm.h>
  81 +#include <sound/pcm_params.h>
  82 +#include <sound/soc.h>
  83 +#include <sound/jack.h>
  84 +
  85 +#include <linux/acpi.h>
  86 +#include <linux/slab.h>
  87 +#include "../codecs/da7213.h"
  88 +
  89 +static int pll_out = DA7213_PLL_FREQ_OUT_90316800;
  90 +
  91 +static int snd_rpi_iqaudio_pll_control(struct snd_soc_dapm_widget *w,
  92 +                                      struct snd_kcontrol *k, int  event)
  93 +{
  94 +       int ret = 0;
  95 +       struct snd_soc_dapm_context *dapm = w->dapm;
  96 +       struct snd_soc_card *card = dapm->card;
  97 +       struct snd_soc_pcm_runtime *rtd =
  98 +               snd_soc_get_pcm_runtime(card, card->dai_link[0].name);
  99 +       struct snd_soc_dai *codec_dai = rtd->codec_dai;
 100 +
 101 +       if (SND_SOC_DAPM_EVENT_OFF(event)) {
 102 +               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_MCLK, 0,
 103 +                                         0);
 104 +               if (ret)
 105 +                       dev_err(card->dev, "Failed to bypass PLL: %d\n", ret);
 106 +               /* Allow PLL time to bypass */
 107 +               msleep(100);
 108 +       } else if (SND_SOC_DAPM_EVENT_ON(event)) {
 109 +               ret = snd_soc_dai_set_pll(codec_dai, 0, DA7213_SYSCLK_PLL, 0,
 110 +                                         pll_out);
 111 +               if (ret)
 112 +                       dev_err(card->dev, "Failed to enable PLL: %d\n", ret);
 113 +               /* Allow PLL time to lock */
 114 +               msleep(100);
 115 +       }
 116 +
 117 +       return ret;
 118 +}
 119 +
 120 +static int snd_rpi_iqaudio_post_dapm_event(struct snd_soc_dapm_widget *w,
 121 +                              struct snd_kcontrol *kcontrol,
 122 +                              int event)
 123 +{
 124 +     switch (event) {
 125 +     case SND_SOC_DAPM_POST_PMU:
 126 +           /* Delay for mic bias ramp */
 127 +           msleep(1000);
 128 +           break;
 129 +     default:
 130 +           break;
 131 +     }
 132 +
 133 +     return 0;
 134 +}
 135 +
 136 +static const struct snd_kcontrol_new dapm_controls[] = {
 137 +       SOC_DAPM_PIN_SWITCH("HP Jack"),
 138 +       SOC_DAPM_PIN_SWITCH("MIC Jack"),
 139 +       SOC_DAPM_PIN_SWITCH("Onboard MIC"),
 140 +       SOC_DAPM_PIN_SWITCH("AUX Jack"),
 141 +};
 142 +
 143 +static const struct snd_soc_dapm_widget dapm_widgets[] = {
 144 +       SND_SOC_DAPM_HP("HP Jack", NULL),
 145 +       SND_SOC_DAPM_MIC("MIC Jack", NULL),
 146 +       SND_SOC_DAPM_MIC("Onboard MIC", NULL),
 147 +       SND_SOC_DAPM_LINE("AUX Jack", NULL),
 148 +       SND_SOC_DAPM_SUPPLY("PLL Control", SND_SOC_NOPM, 0, 0,
 149 +                           snd_rpi_iqaudio_pll_control,
 150 +                           SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 151 +       SND_SOC_DAPM_POST("Post Power Up Event", snd_rpi_iqaudio_post_dapm_event),
 152 +};
 153 +
 154 +static const struct snd_soc_dapm_route audio_map[] = {
 155 +       {"HP Jack", NULL, "HPL"},
 156 +       {"HP Jack", NULL, "HPR"},
 157 +       {"HP Jack", NULL, "PLL Control"},
 158 +
 159 +       {"AUXR", NULL, "AUX Jack"},
 160 +       {"AUXL", NULL, "AUX Jack"},
 161 +       {"AUX Jack", NULL, "PLL Control"},
 162 +
 163 +       /* Assume Mic1 is linked to Headset and Mic2 to on-board mic */
 164 +       {"MIC1", NULL, "MIC Jack"},
 165 +       {"MIC Jack", NULL, "PLL Control"},
 166 +       {"MIC2", NULL, "Onboard MIC"},
 167 +       {"Onboard MIC", NULL, "PLL Control"},
 168 +};
 169 +
 170 +/* machine stream operations */
 171 +
 172 +static int snd_rpi_iqaudio_codec_init(struct snd_soc_pcm_runtime *rtd)
 173 +{
 174 +       struct snd_soc_dai *codec_dai = rtd->codec_dai;
 175 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 176 +       int ret;
 177 +
 178 +       /*
 179 +        * Disable AUX Jack Pin by default to prevent PLL being enabled at
 180 +        * startup. This avoids holding the PLL to a fixed SR config for
 181 +        * subsequent streams.
 182 +        *
 183 +        * This pin can still be enabled later, as required by user-space.
 184 +        */
 185 +       snd_soc_dapm_disable_pin(&rtd->card->dapm, "AUX Jack");
 186 +       snd_soc_dapm_sync(&rtd->card->dapm);
 187 +
 188 +       /* Set bclk ratio to align with codec's BCLK rate */
 189 +       ret = snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
 190 +       if (ret) {
 191 +               dev_err(rtd->dev, "Failed to set CPU BLCK ratio\n");
 192 +               return ret;
 193 +       }
 194 +
 195 +       /* Set MCLK frequency to codec, onboard 11.2896MHz clock */
 196 +       return snd_soc_dai_set_sysclk(codec_dai, DA7213_CLKSRC_MCLK, 11289600,
 197 +                                     SND_SOC_CLOCK_OUT);
 198 +}
 199 +
 200 +static int snd_rpi_iqaudio_codec_hw_params(struct snd_pcm_substream *substream,
 201 +                                          struct snd_pcm_hw_params *params)
 202 +{
 203 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 204 +       unsigned int samplerate = params_rate(params);
 205 +
 206 +       switch (samplerate) {
 207 +       case  8000:
 208 +       case 16000:
 209 +       case 32000:
 210 +       case 48000:
 211 +       case 96000:
 212 +               pll_out = DA7213_PLL_FREQ_OUT_98304000;
 213 +               return 0;
 214 +       case 44100:
 215 +       case 88200:
 216 +               pll_out = DA7213_PLL_FREQ_OUT_90316800;
 217 +               return 0;
 218 +       default:
 219 +               dev_err(rtd->dev,"Unsupported samplerate %d\n", samplerate);
 220 +               return -EINVAL;
 221 +       }
 222 +}
 223 +
 224 +static const struct snd_soc_ops snd_rpi_iqaudio_codec_ops = {
 225 +       .hw_params = snd_rpi_iqaudio_codec_hw_params,
 226 +};
 227 +
 228 +SND_SOC_DAILINK_DEFS(rpi_iqaudio,
 229 +       DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
 230 +       DAILINK_COMP_ARRAY(COMP_CODEC("da7213.1-001a", "da7213-hifi")),
 231 +       DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2835-i2s.0")));
 232 +
 233 +static struct snd_soc_dai_link snd_rpi_iqaudio_codec_dai[] = {
 234 +{
 235 +       .dai_fmt                = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 236 +                                 SND_SOC_DAIFMT_CBM_CFM,
 237 +       .init                   = snd_rpi_iqaudio_codec_init,
 238 +       .ops                    = &snd_rpi_iqaudio_codec_ops,
 239 +       .symmetric_rates        = 1,
 240 +       .symmetric_channels     = 1,
 241 +       .symmetric_samplebits   = 1,
 242 +       SND_SOC_DAILINK_REG(rpi_iqaudio),
 243 +},
 244 +};
 245 +
 246 +/* audio machine driver */
 247 +static struct snd_soc_card snd_rpi_iqaudio_codec = {
 248 +       .owner                  = THIS_MODULE,
 249 +       .dai_link               = snd_rpi_iqaudio_codec_dai,
 250 +       .num_links              = ARRAY_SIZE(snd_rpi_iqaudio_codec_dai),
 251 +       .controls               = dapm_controls,
 252 +       .num_controls           = ARRAY_SIZE(dapm_controls),
 253 +       .dapm_widgets           = dapm_widgets,
 254 +       .num_dapm_widgets       = ARRAY_SIZE(dapm_widgets),
 255 +       .dapm_routes            = audio_map,
 256 +       .num_dapm_routes        = ARRAY_SIZE(audio_map),
 257 +};
 258 +
 259 +static int snd_rpi_iqaudio_codec_probe(struct platform_device *pdev)
 260 +{
 261 +       int ret = 0;
 262 +
 263 +       snd_rpi_iqaudio_codec.dev = &pdev->dev;
 264 +
 265 +       if (pdev->dev.of_node) {
 266 +               struct device_node *i2s_node;
 267 +               struct snd_soc_card *card = &snd_rpi_iqaudio_codec;
 268 +               struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_codec_dai[0];
 269 +
 270 +               i2s_node = of_parse_phandle(pdev->dev.of_node,
 271 +                                           "i2s-controller", 0);
 272 +               if (i2s_node) {
 273 +                       dai->cpus->dai_name = NULL;
 274 +                       dai->cpus->of_node = i2s_node;
 275 +                       dai->platforms->name = NULL;
 276 +                       dai->platforms->of_node = i2s_node;
 277 +               }
 278 +
 279 +               if (of_property_read_string(pdev->dev.of_node, "card_name",
 280 +                                           &card->name))
 281 +                       card->name = "IQaudIOCODEC";
 282 +
 283 +               if (of_property_read_string(pdev->dev.of_node, "dai_name",
 284 +                                           &dai->name))
 285 +                       dai->name = "IQaudIO CODEC";
 286 +
 287 +               if (of_property_read_string(pdev->dev.of_node,
 288 +                                       "dai_stream_name", &dai->stream_name))
 289 +                       dai->stream_name = "IQaudIO CODEC HiFi v1.2";
 290 +
 291 +       }
 292 +
 293 +       ret = snd_soc_register_card(&snd_rpi_iqaudio_codec);
 294 +       if (ret) {
 295 +               if (ret != -EPROBE_DEFER)
 296 +                       dev_err(&pdev->dev,
 297 +                               "snd_soc_register_card() failed: %d\n", ret);
 298 +               return ret;
 299 +       }
 300 +
 301 +       return 0;
 302 +}
 303 +
 304 +static int snd_rpi_iqaudio_codec_remove(struct platform_device *pdev)
 305 +{
 306 +       return snd_soc_unregister_card(&snd_rpi_iqaudio_codec);
 307 +}
 308 +
 309 +static const struct of_device_id iqaudio_of_match[] = {
 310 +       { .compatible = "iqaudio,iqaudio-codec", },
 311 +       {},
 312 +};
 313 +
 314 +MODULE_DEVICE_TABLE(of, iqaudio_of_match);
 315 +
 316 +static struct platform_driver snd_rpi_iqaudio_codec_driver = {
 317 +       .driver = {
 318 +               .name   = "snd-rpi-iqaudio-codec",
 319 +               .owner  = THIS_MODULE,
 320 +               .of_match_table = iqaudio_of_match,
 321 +       },
 322 +       .probe          = snd_rpi_iqaudio_codec_probe,
 323 +       .remove         = snd_rpi_iqaudio_codec_remove,
 324 +};
 325 +
 326 +
 327 +
 328 +module_platform_driver(snd_rpi_iqaudio_codec_driver);
 329 +
 330 +MODULE_AUTHOR("Gordon Garrity <gordon@iqaudio.com>");
 331 +MODULE_DESCRIPTION("ASoC Driver for IQaudIO CODEC");
 332 +MODULE_LICENSE("GPL v2");