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 diff --git a/arch/arm/configs/bcmrpi_defconfig b/arch/arm/configs/bcmrpi_defconfig
  18 index c363a10..28547eb 100644
  19 --- a/arch/arm/configs/bcmrpi_defconfig
  20 +++ b/arch/arm/configs/bcmrpi_defconfig
  21 @@ -756,6 +756,7 @@ CONFIG_SND_USB_6FIRE=m
  22  CONFIG_SND_SOC=m
  23  CONFIG_SND_BCM2708_SOC_I2S=m
  24  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
  25 +CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
  26  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
  27  CONFIG_SND_BCM2708_SOC_RPI_DAC=m
  28  CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
  29 diff --git a/arch/arm/mach-bcm2708/bcm2708.c b/arch/arm/mach-bcm2708/bcm2708.c
  30 index 5ff1299..aa62e55 100644
  31 --- a/arch/arm/mach-bcm2708/bcm2708.c
  32 +++ b/arch/arm/mach-bcm2708/bcm2708.c
  33 @@ -645,6 +645,20 @@ static struct platform_device snd_pcm5102a_codec_device = {
  34  };
  35  #endif
  36
  37 +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
  38 +static struct platform_device snd_rpi_hifiberry_dacplus_device = {
  39 +        .name = "snd-rpi-hifiberry-dacplus",
  40 +        .id = 0,
  41 +        .num_resources = 0,
  42 +};
  43 +
  44 +static struct i2c_board_info __initdata snd_pcm512x_hbdacplus_i2c_devices[] = {
  45 +        {
  46 +                I2C_BOARD_INFO("pcm5122", 0x4d)
  47 +        },
  48 +};
  49 +#endif
  50 +
  51  #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
  52  static struct platform_device snd_hifiberry_digi_device = {
  53          .name = "snd-hifiberry-digi",
  54 @@ -845,6 +859,11 @@ void __init bcm2708_init(void)
  55          bcm_register_device(&snd_pcm5102a_codec_device);
  56  #endif
  57
  58 +#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS_MODULE)
  59 +        bcm_register_device(&snd_rpi_hifiberry_dacplus_device);
  60 +        i2c_register_board_info(1, snd_pcm512x_hbdacplus_i2c_devices, ARRAY_SIZE(snd_pcm512x_hbdacplus_i2c_devices));
  61 +#endif
  62 +
  63  #if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI_MODULE)
  64          bcm_register_device(&snd_hifiberry_digi_device);
  65          i2c_register_board_info(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices));
  66 diff --git a/sound/soc/bcm/Kconfig b/sound/soc/bcm/Kconfig
  67 index c621a5e..926a82b 100644
  68 --- a/sound/soc/bcm/Kconfig
  69 +++ b/sound/soc/bcm/Kconfig
  70 @@ -26,6 +26,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
  71          help
  72           Say Y or M if you want to add support for HifiBerry DAC.
  73
  74 +config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
  75 +        tristate "Support for HifiBerry DAC+"
  76 +        depends on SND_BCM2708_SOC_I2S
  77 +        select SND_SOC_PCM512x
  78 +        help
  79 +         Say Y or M if you want to add support for HifiBerry DAC+.
  80 +
  81  config SND_BCM2708_SOC_HIFIBERRY_DIGI
  82          tristate "Support for HifiBerry Digi"
  83          depends on SND_BCM2708_SOC_I2S
  84 diff --git a/sound/soc/bcm/Makefile b/sound/soc/bcm/Makefile
  85 index d597fb0..c02e3a2 100644
  86 --- a/sound/soc/bcm/Makefile
  87 +++ b/sound/soc/bcm/Makefile
  88 @@ -10,11 +10,13 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd-soc-bcm2708-i2s.o
  89
  90  # BCM2708 Machine Support
  91  snd-soc-hifiberry-dac-objs := hifiberry_dac.o
  92 +snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
  93  snd-soc-hifiberry-digi-objs := hifiberry_digi.o
  94  snd-soc-rpi-dac-objs := rpi-dac.o
  95  snd-soc-iqaudio-dac-objs := iqaudio-dac.o
  96
  97  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
  98 +obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
  99  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
 100  obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
 101  obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
 102 diff --git a/sound/soc/bcm/hifiberry_dacplus.c b/sound/soc/bcm/hifiberry_dacplus.c
 103 new file mode 100644
 104 index 0000000..c63387b
 105 --- /dev/null
 106 +++ b/sound/soc/bcm/hifiberry_dacplus.c
 107 @@ -0,0 +1,119 @@
 108 +/*
 109 + * ASoC Driver for HiFiBerry DAC+
 110 + *
 111 + * Author:     Daniel Matuschek
 112 + *             Copyright 2014
 113 + *             based on code by Florian Meier <florian.meier@koalo.de>
 114 + *
 115 + * This program is free software; you can redistribute it and/or
 116 + * modify it under the terms of the GNU General Public License
 117 + * version 2 as published by the Free Software Foundation.
 118 + *
 119 + * This program is distributed in the hope that it will be useful, but
 120 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 121 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 122 + * General Public License for more details.
 123 + */
 124 +
 125 +#include <linux/module.h>
 126 +#include <linux/platform_device.h>
 127 +
 128 +#include <sound/core.h>
 129 +#include <sound/pcm.h>
 130 +#include <sound/pcm_params.h>
 131 +#include <sound/soc.h>
 132 +#include <sound/jack.h>
 133 +
 134 +#include "../codecs/pcm512x.h"
 135 +
 136 +static int snd_rpi_hifiberry_dacplus_init(struct snd_soc_pcm_runtime *rtd)
 137 +{
 138 +       struct snd_soc_codec *codec = rtd->codec;
 139 +       snd_soc_update_bits(codec, PCM512x_GPIO_EN, 0x08, 0x08);
 140 +       snd_soc_update_bits(codec, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
 141 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 142 +       return 0;
 143 +}
 144 +
 145 +static int snd_rpi_hifiberry_dacplus_hw_params(struct snd_pcm_substream *substream,
 146 +                                      struct snd_pcm_hw_params *params)
 147 +{
 148 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 149 +       struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 150 +       return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
 151 +}
 152 +
 153 +static int snd_rpi_hifiberry_dacplus_startup(struct snd_pcm_substream *substream) {
 154 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 155 +       struct snd_soc_codec *codec = rtd->codec;
 156 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
 157 +       return 0;
 158 +}
 159 +
 160 +static void snd_rpi_hifiberry_dacplus_shutdown(struct snd_pcm_substream *substream) {
 161 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 162 +       struct snd_soc_codec *codec = rtd->codec;
 163 +       snd_soc_update_bits(codec, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
 164 +}
 165 +
 166 +/* machine stream operations */
 167 +static struct snd_soc_ops snd_rpi_hifiberry_dacplus_ops = {
 168 +       .hw_params = snd_rpi_hifiberry_dacplus_hw_params,
 169 +       .startup = snd_rpi_hifiberry_dacplus_startup,
 170 +       .shutdown = snd_rpi_hifiberry_dacplus_shutdown,
 171 +};
 172 +
 173 +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplus_dai[] = {
 174 +{
 175 +       .name           = "HiFiBerry DAC+",
 176 +       .stream_name    = "HiFiBerry DAC+ HiFi",
 177 +       .cpu_dai_name   = "bcm2708-i2s.0",
 178 +       .codec_dai_name = "pcm512x-hifi",
 179 +       .platform_name  = "bcm2708-i2s.0",
 180 +       .codec_name     = "pcm512x.1-004d",
 181 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 182 +                               SND_SOC_DAIFMT_CBS_CFS,
 183 +       .ops            = &snd_rpi_hifiberry_dacplus_ops,
 184 +       .init           = snd_rpi_hifiberry_dacplus_init,
 185 +},
 186 +};
 187 +
 188 +/* audio machine driver */
 189 +static struct snd_soc_card snd_rpi_hifiberry_dacplus = {
 190 +       .name         = "snd_rpi_hifiberry_dacplus",
 191 +       .dai_link     = snd_rpi_hifiberry_dacplus_dai,
 192 +       .num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplus_dai),
 193 +};
 194 +
 195 +static int snd_rpi_hifiberry_dacplus_probe(struct platform_device *pdev)
 196 +{
 197 +       int ret = 0;
 198 +
 199 +       snd_rpi_hifiberry_dacplus.dev = &pdev->dev;
 200 +       ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplus);
 201 +       if (ret)
 202 +               dev_err(&pdev->dev,
 203 +                       "snd_soc_register_card() failed: %d\n", ret);
 204 +
 205 +       return ret;
 206 +}
 207 +
 208 +static int snd_rpi_hifiberry_dacplus_remove(struct platform_device *pdev)
 209 +{
 210 +       return snd_soc_unregister_card(&snd_rpi_hifiberry_dacplus);
 211 +}
 212 +
 213 +static struct platform_driver snd_rpi_hifiberry_dacplus_driver = {
 214 +       .driver = {
 215 +               .name   = "snd-rpi-hifiberry-dacplus",
 216 +               .owner  = THIS_MODULE,
 217 +       },
 218 +       .probe          = snd_rpi_hifiberry_dacplus_probe,
 219 +       .remove         = snd_rpi_hifiberry_dacplus_remove,
 220 +};
 221 +
 222 +module_platform_driver(snd_rpi_hifiberry_dacplus_driver);
 223 +
 224 +MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
 225 +MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+");
 226 +MODULE_LICENSE("GPL v2");
 227 --
 228 1.8.3.2
 229