target/linux/brcm2708/patches-3.18/0060-Added-support-for-HiFiBerry-DAC.patch

   1 From fb7a1cc51aee2d66232d3a170e1343dfbb7b3485 Mon Sep 17 00:00:00 2001
   2 From: Daniel Matuschek <info@crazy-audio.com>
   3 Date: Mon, 4 Aug 2014 10:06:56 +0200
   4 Subject: [PATCH 060/114] Added support for HiFiBerry DAC+
   5
   6 The driver is based on the HiFiBerry DAC driver. However HiFiBerry DAC+ uses
   7 a different codec chip (PCM5122), therefore a new driver is necessary.
   8 ---
   9  arch/arm/configs/bcmrpi_defconfig |   1 +
  10  arch/arm/mach-bcm2708/bcm2708.c   |  19 ++++++
  11  sound/soc/bcm/Kconfig             |   7 +++
  12  sound/soc/bcm/Makefile            |   2 +
  13  sound/soc/bcm/hifiberry_dacplus.c | 119 ++++++++++++++++++++++++++++++++++++++
  14  5 files changed, 148 insertions(+)
  15  create mode 100644 sound/soc/bcm/hifiberry_dacplus.c
  16
  17 --- a/arch/arm/configs/bcmrpi_defconfig
  18 +++ b/arch/arm/configs/bcmrpi_defconfig
  19 @@ -756,6 +756,7 @@ CONFIG_SND_USB_6FIRE=m
  20  CONFIG_SND_SOC=m
  21  CONFIG_SND_BCM2708_SOC_I2S=m
  22  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
  23 +CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
  24  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
  25  CONFIG_SND_BCM2708_SOC_RPI_DAC=m
  26  CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
  27 --- a/arch/arm/mach-bcm2708/bcm2708.c
  28 +++ b/arch/arm/mach-bcm2708/bcm2708.c
  29 @@ -645,6 +645,20 @@ static struct platform_device snd_pcm510
  30  };
  31  #endif
  32
  33 +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
  34 +static struct platform_device snd_rpi_hifiberry_dacplus_device = {
  35 +        .name = "snd-rpi-hifiberry-dacplus",
  36 +        .id = 0,
  37 +        .num_resources = 0,
  38 +};
  39 +
  40 +static struct i2c_board_info __initdata snd_pcm512x_hbdacplus_i2c_devices[] = {
  41 +        {
  42 +                I2C_BOARD_INFO("pcm5122", 0x4d)
  43 +        },
  44 +};
  45 +#endif
  46 +
  47  #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
  48  static struct platform_device snd_hifiberry_digi_device = {
  49          .name = "snd-hifiberry-digi",
  50 @@ -845,6 +859,11 @@ void __init bcm2708_init(void)
  51          bcm_register_device(&snd_pcm5102a_codec_device);
  52  #endif
  53
  54 +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
  55 +        bcm_register_device(&snd_rpi_hifiberry_dacplus_device);
  56 +        i2c_register_board_info(1, snd_pcm512x_hbdacplus_i2c_devices, ARRAY_SIZE(snd_pcm512x_hbdacplus_i2c_devices));
  57 +#endif
  58 +
  59  #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
  60          bcm_register_device(&snd_hifiberry_digi_device);
  61          i2c_register_board_info(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices));
  62 --- a/sound/soc/bcm/Kconfig
  63 +++ b/sound/soc/bcm/Kconfig
  64 @@ -26,6 +26,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
  65          help
  66           Say Y or M if you want to add support for HifiBerry DAC.
  67
  68 +config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
  69 +        tristate "Support for HifiBerry DAC+"
  70 +        depends on SND_BCM2708_SOC_I2S
  71 +        select SND_SOC_PCM512x
  72 +        help
  73 +         Say Y or M if you want to add support for HifiBerry DAC+.
  74 +
  75  config SND_BCM2708_SOC_HIFIBERRY_DIGI
  76          tristate "Support for HifiBerry Digi"
  77          depends on SND_BCM2708_SOC_I2S
  78 --- a/sound/soc/bcm/Makefile
  79 +++ b/sound/soc/bcm/Makefile
  80 @@ -10,11 +10,13 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd
  81
  82  # BCM2708 Machine Support
  83  snd-soc-hifiberry-dac-objs := hifiberry_dac.o
  84 +snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
  85  snd-soc-hifiberry-digi-objs := hifiberry_digi.o
  86  snd-soc-rpi-dac-objs := rpi-dac.o
  87  snd-soc-iqaudio-dac-objs := iqaudio-dac.o
  88
  89  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
  90 +obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
  91  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
  92  obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
  93  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
  94 --- /dev/null
  95 +++ b/sound/soc/bcm/hifiberry_dacplus.c
  96 @@ -0,0 +1,119 @@
  97 +/*
  98 + * ASoC Driver for HiFiBerry DAC+
  99 + *
 100 + * Author:     Daniel Matuschek
 101 + *             Copyright 2014
 102 + *             based on code by Florian Meier <florian.meier@koalo.de>
 103 + *
 104 + * This program is free software; you can redistribute it and/or
 105 + * modify it under the terms of the GNU General Public License
 106 + * version 2 as published by the Free Software Foundation.
 107 + *
 108 + * This program is distributed in the hope that it will be useful, but
 109 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 110 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 111 + * General Public License for more details.
 112 + */
 113 +
 114 +#include <linux/module.h>
 115 +#include <linux/platform_device.h>
 116 +
 117 +#include <sound/core.h>
 118 +#include <sound/pcm.h>
 119 +#include <sound/pcm_params.h>
 120 +#include <sound/soc.h>
 121 +#include <sound/jack.h>
 122 +
 123 +#include "../codecs/pcm512x.h"
 124 +
 125 +static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
 126 +{
 127 +       struct snd_soc_codec *codec = rtd->codec;
 128 +       snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
 129 +       snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
 130 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 131 +       return 0;
 132 +}
 133 +
 134 +static int snd_rpi_hifiberry_dacplus_hw_params(struct snd_pcm_substream *substream,
 135 +                                      struct snd_pcm_hw_params *params)
 136 +{
 137 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 138 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 139 +       return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
 140 +}
 141 +
 142 +static int snd_rpi_hifiberry_dacplus_startup(struct snd_pcm_substream *substream) {
 143 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 144 +       struct snd_soc_codec *codec = rtd->codec;
 145 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 146 +       return 0;
 147 +}
 148 +
 149 +static void snd_rpi_hifiberry_dacplus_shutdown(struct snd_pcm_substream *substream) {
 150 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 151 +       struct snd_soc_codec *codec = rtd->codec;
 152 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
 153 +}
 154 +
 155 +/* machine stream operations */
 156 +static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
 157 +       .hw_params = snd_rpi_hifiberry_dacplus_hw_params,
 158 +       .startup = snd_rpi_hifiberry_dacplus_startup,
 159 +       .shutdown = snd_rpi_hifiberry_dacplus_shutdown,
 160 +};
 161 +
 162 +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
 163 +{
 164 +       .name           = "HiFiBerry DAC+",
 165 +       .stream_name    = "HiFiBerry DAC+ HiFi",
 166 +       .cpu_dai_name   = "bcm2708-i2s.0",
 167 +       .codec_dai_name = "pcm512x-hifi",
 168 +       .platform_name  = "bcm2708-i2s.0",
 169 +       .codec_name     = "pcm512x.1-004d",
 170 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 171 +                               SND_SOC_DAIFMT_CBS_CFS,
 172 +       .ops            = &snd_rpi_hifiberry_dacplus_ops,
 173 +       .init           = snd_rpi_hifiberry_dacplus_init,
 174 +},
 175 +};
 176 +
 177 +/* audio machine driver */
 178 +static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
 179 +       .name         = "snd_rpi_hifiberry_dacplus",
 180 +       .dai_link     = snd_rpi_hifiberry_dacplus_dai,
 181 +       .num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
 182 +};
 183 +
 184 +static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
 185 +{
 186 +       int ret = 0;
 187 +
 188 +       snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
 189 +       ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus);
 190 +       if (ret)
 191 +               dev_err(&pdev->dev,
 192 +                       "snd_soc_register_card() failed: %d\n", ret);
 193 +
 194 +       return ret;
 195 +}
 196 +
 197 +static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
 198 +{
 199 +       return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
 200 +}
 201 +
 202 +static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
 203 +       .driver = {
 204 +               .name   = "snd-rpi-hifiberry-dacplus",
 205 +               .owner  = THIS_MODULE,
 206 +       },
 207 +       .probe          = snd_rpi_hifiberry_dacplus_probe,
 208 +       .remove         = snd_rpi_hifiberry_dacplus_remove,
 209 +};
 210 +
 211 +module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
 212 +
 213 +MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
 214 +MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
 215 +MODULE_LICENSE("GPL v2");