target/linux/brcm2708/patches-4.4/0423-Add-support-for-Dion-Audio-LOCO-DAC-AMP-HAT.patch

   1 From 6fa4c2110478a814a9dd44d64522e7a81a1a2793 Mon Sep 17 00:00:00 2001
   2 From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
   3 Date: Sat, 2 Jul 2016 16:26:19 +0100
   4 Subject: [PATCH 423/423] Add support for Dion Audio LOCO DAC-AMP HAT
   5
   6 Using dedicated machine driver and pcm5102a codec driver.
   7
   8 Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
   9 ---
  10  arch/arm/boot/dts/overlays/Makefile                |   1 +
  11  arch/arm/boot/dts/overlays/README                  |   6 +
  12  .../boot/dts/overlays/dionaudio-loco-overlay.dts   |  39 +++++++
  13  arch/arm/configs/bcm2709_defconfig                 |   1 +
  14  arch/arm/configs/bcmrpi_defconfig                  |   1 +
  15  sound/soc/bcm/Kconfig                              |   7 ++
  16  sound/soc/bcm/Makefile                             |   3 +-
  17  sound/soc/bcm/dionaudio_loco.c                     | 121 +++++++++++++++++++++
  18  8 files changed, 178 insertions(+), 1 deletion(-)
  19  create mode 100644 arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
  20  create mode 100644 sound/soc/bcm/dionaudio_loco.c
  21
  22 --- a/arch/arm/boot/dts/overlays/Makefile
  23 +++ b/arch/arm/boot/dts/overlays/Makefile
  24 @@ -20,6 +20,7 @@ dtbo-$(RPI_DT_OVERLAYS) += at86rf233.dtb
  25  dtbo-$(RPI_DT_OVERLAYS) += audioinjector-wm8731-audio.dtbo
  26  dtbo-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor.dtbo
  27  dtbo-$(RPI_DT_OVERLAYS) += dht11.dtbo
  28 +dtbo-$(RPI_DT_OVERLAYS) += dionaudio-loco.dtbo
  29  dtbo-$(RPI_DT_OVERLAYS) += dpi24.dtbo
  30  dtbo-$(RPI_DT_OVERLAYS) += dwc-otg.dtbo
  31  dtbo-$(RPI_DT_OVERLAYS) += dwc2.dtbo
  32 --- a/arch/arm/boot/dts/overlays/README
  33 +++ b/arch/arm/boot/dts/overlays/README
  34 @@ -268,6 +268,12 @@ Params: gpiopin                 GPIO con
  35                                  (default 4)
  36
  37
  38 +Name:   dionaudio-loco
  39 +Info:   Configures the Dion Audio LOCO DAC-AMP
  40 +Load:   dtoverlay=dionaudio-loco
  41 +Params: <None>
  42 +
  43 +
  44  Name:   dpi24
  45  Info:   Overlay for a generic 24-bit DPI display
  46          This uses GPIOs 0-27 (so no I2C, uart etc.), and activates the output
  47 --- /dev/null
  48 +++ b/arch/arm/boot/dts/overlays/dionaudio-loco-overlay.dts
  49 @@ -0,0 +1,39 @@
  50 +// Definitions for Dion Audio LOCO DAC-AMP
  51 +
  52 +/*
  53 + * PCM5242 DAC (in hardware mode) and TPA3118 AMP.
  54 + */
  55 +
  56 +/dts-v1/;
  57 +/plugin/;
  58 +
  59 +/ {
  60 +       compatible = "brcm,bcm2708";
  61 +
  62 +       fragment@0 {
  63 +               target = <&i2s>;
  64 +               __overlay__ {
  65 +                       status = "okay";
  66 +               };
  67 +       };
  68 +
  69 +       fragment@1 {
  70 +               target-path = "/";
  71 +               __overlay__ {
  72 +                       pcm5102a-codec {
  73 +                               #sound-dai-cells = <0>;
  74 +                               compatible = "ti,pcm5102a";
  75 +                               status = "okay";
  76 +                       };
  77 +               };
  78 +       };
  79 +
  80 +       fragment@2 {
  81 +               target = <&sound>;
  82 +               __overlay__ {
  83 +                       compatible = "dionaudio,loco-pcm5242-tpa3118";
  84 +                       i2s-controller = <&i2s>;
  85 +                       status = "okay";
  86 +               };
  87 +       };
  88 +};
  89 --- a/arch/arm/configs/bcm2709_defconfig
  90 +++ b/arch/arm/configs/bcm2709_defconfig
  91 @@ -870,6 +870,7 @@ CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
  92  CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
  93  CONFIG_SND_DIGIDAC1_SOUNDCARD=m
  94  CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
  95 +CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
  96  CONFIG_SND_SOC_ADAU1701=m
  97  CONFIG_SND_SOC_WM8804_I2C=m
  98  CONFIG_SND_SIMPLE_CARD=m
  99 --- a/arch/arm/configs/bcmrpi_defconfig
 100 +++ b/arch/arm/configs/bcmrpi_defconfig
 101 @@ -862,6 +862,7 @@ CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
 102  CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
 103  CONFIG_SND_DIGIDAC1_SOUNDCARD=m
 104  CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
 105 +CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
 106  CONFIG_SND_SOC_ADAU1701=m
 107  CONFIG_SND_SOC_WM8804_I2C=m
 108  CONFIG_SND_SIMPLE_CARD=m
 109 --- a/sound/soc/bcm/Kconfig
 110 +++ b/sound/soc/bcm/Kconfig
 111 @@ -107,3 +107,10 @@ config SND_DIGIDAC1_SOUNDCARD
 112          select SND_SOC_WM8741
 113          help
 114           Say Y or M if you want to add support for Red Rocks Audio DigiDAC1 board.
 115 +
 116 +config SND_BCM2708_SOC_DIONAUDIO_LOCO
 117 +       tristate "Support for Dion Audio LOCO DAC-AMP"
 118 +       depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 119 +       select SND_SOC_PCM5102a
 120 +       help
 121 +         Say Y or M if you want to add support for Dion Audio LOCO.
 122 --- a/sound/soc/bcm/Makefile
 123 +++ b/sound/soc/bcm/Makefile
 124 @@ -18,6 +18,7 @@ snd-soc-iqaudio-digi-objs := iqaudio_dig
 125  snd-soc-raspidac3-objs := raspidac3.o
 126  snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
 127  snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
 128 +snd-soc-dionaudio-loco-objs := dionaudio_loco.o
 129
 130  obj-$(CONFIG_SND_BCM2708_SOC_ADAU1977_ADC) += snd-soc-adau1977-adc.o
 131  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
 132 @@ -33,4 +34,4 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIG
 133  obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
 134  obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
 135  obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
 136 -
 137 +obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
 138 --- /dev/null
 139 +++ b/sound/soc/bcm/dionaudio_loco.c
 140 @@ -0,0 +1,121 @@
 141 +/*
 142 + * ASoC Driver for Dion Audio LOCO DAC-AMP
 143 + *
 144 + * Author:      Miquel Blauw <info@dionaudio.nl>
 145 + *              Copyright 2016
 146 + *
 147 + * Based on the software of the RPi-DAC writen by Florian Meier
 148 + *
 149 + * This program is free software; you can redistribute it and/or
 150 + * modify it under the terms of the GNU General Public License
 151 + * version 2 as published by the Free Software Foundation.
 152 + *
 153 + * This program is distributed in the hope that it will be useful, but
 154 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 155 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 156 + * General Public License for more details.
 157 + */
 158 +
 159 +#include <linux/module.h>
 160 +#include <linux/platform_device.h>
 161 +
 162 +#include <sound/core.h>
 163 +#include <sound/pcm.h>
 164 +#include <sound/pcm_params.h>
 165 +#include <sound/soc.h>
 166 +#include <sound/jack.h>
 167 +
 168 +static int snd_rpi_dionaudio_loco_hw_params(
 169 +       struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
 170 +{
 171 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 172 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 173 +
 174 +       unsigned int sample_bits =
 175 +               snd_pcm_format_physical_width(params_format(params));
 176 +
 177 +       return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
 178 +}
 179 +
 180 +/* machine stream operations */
 181 +static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
 182 +       .hw_params = snd_rpi_dionaudio_loco_hw_params,
 183 +};
 184 +
 185 +static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
 186 +{
 187 +       .name           = "DionAudio LOCO",
 188 +       .stream_name    = "DionAudio LOCO DAC-AMP",
 189 +       .cpu_dai_name   = "bcm2708-i2s.0",
 190 +       .codec_dai_name = "pcm5102a-hifi",
 191 +       .platform_name  = "bcm2708-i2s.0",
 192 +       .codec_name     = "pcm5102a-codec",
 193 +       .dai_fmt        = SND_SOC_DAIFMT_I2S |
 194 +                         SND_SOC_DAIFMT_NB_NF |
 195 +                         SND_SOC_DAIFMT_CBS_CFS,
 196 +       .ops            = &snd_rpi_dionaudio_loco_ops,
 197 +},
 198 +};
 199 +
 200 +/* audio machine driver */
 201 +static struct snd_soc_card snd_rpi_dionaudio_loco = {
 202 +       .name           = "snd_rpi_dionaudio_loco",
 203 +       .dai_link       = snd_rpi_dionaudio_loco_dai,
 204 +       .num_links      = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
 205 +};
 206 +
 207 +static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
 208 +{
 209 +       struct device_node *np;
 210 +       int ret = 0;
 211 +
 212 +       snd_rpi_dionaudio_loco.dev = &pdev->dev;
 213 +
 214 +       np = pdev->dev.of_node;
 215 +       if (np) {
 216 +               struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
 217 +               struct device_node *i2s_np;
 218 +
 219 +               i2s_np = of_parse_phandle(np, "i2s-controller", 0);
 220 +               if (i2s_np) {
 221 +                       dai->cpu_dai_name = NULL;
 222 +                       dai->cpu_of_node = i2s_np;
 223 +                       dai->platform_name = NULL;
 224 +                       dai->platform_of_node = i2s_np;
 225 +               }
 226 +       }
 227 +
 228 +       ret = snd_soc_register_card(&snd_rpi_dionaudio_loco);
 229 +       if (ret)
 230 +               dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 231 +                       ret);
 232 +
 233 +       return ret;
 234 +}
 235 +
 236 +static int snd_rpi_dionaudio_loco_remove(struct platform_device *pdev)
 237 +{
 238 +       return snd_soc_unregister_card(&snd_rpi_dionaudio_loco);
 239 +}
 240 +
 241 +static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
 242 +       { .compatible = "dionaudio,loco-pcm5242-tpa3118", },
 243 +       { /* sentinel */ },
 244 +};
 245 +MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
 246 +
 247 +static struct platform_driver snd_rpi_dionaudio_loco_driver = {
 248 +       .driver = {
 249 +               .name           = "snd-dionaudio-loco",
 250 +               .owner          = THIS_MODULE,
 251 +               .of_match_table = snd_rpi_dionaudio_loco_of_match,
 252 +       },
 253 +       .probe  = snd_rpi_dionaudio_loco_probe,
 254 +       .remove = snd_rpi_dionaudio_loco_remove,
 255 +};
 256 +
 257 +module_platform_driver(snd_rpi_dionaudio_loco_driver);
 258 +
 259 +MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
 260 +MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
 261 +MODULE_LICENSE("GPL v2");