target/linux/xburst/patches-2.6.34/067-n526-sound.patch

   1 From c2ac996d78f5015d759375792ba390739c1acd00 Mon Sep 17 00:00:00 2001
   2 From: Lars-Peter Clausen <lars@metafoo.de>
   3 Date: Sat, 24 Apr 2010 12:38:41 +0200
   4 Subject: [PATCH] Add N526 sound SoC board driver
   5
   6 ---
   7  sound/soc/jz4740/Kconfig  |    8 ++
   8  sound/soc/jz4740/Makefile |    2 +
   9  sound/soc/jz4740/n526.c   |  169 +++++++++++++++++++++++++++++++++++++++++++++
  10  3 files changed, 179 insertions(+), 0 deletions(-)
  11  create mode 100644 sound/soc/jz4740/n526.c
  12
  13 diff --git a/sound/soc/jz4740/Kconfig b/sound/soc/jz4740/Kconfig
  14 index fea440d..cd00c8c 100644
  15 --- a/sound/soc/jz4740/Kconfig
  16 +++ b/sound/soc/jz4740/Kconfig
  17 @@ -27,3 +27,11 @@ config SND_JZ4740_SOC_N516
  18      select SND_SOC_JZCODEC
  19         help
  20           Say Y if you want to enable support for SoC audio on the Hanvon N516.
  21 +
  22 +config SND_JZ4740_SOC_N526
  23 +       tristate "SoC Audio support for Hanvon N526 eBook reader"
  24 +       depends on SND_JZ4740_SOC && JZ4740_N526
  25 +       select SND_JZ4740_SOC_I2S
  26 +    select SND_SOC_JZCODEC
  27 +       help
  28 +         Say Y if you want to enable support for SoC audio on the Hanvon N526.
  29 diff --git a/sound/soc/jz4740/Makefile b/sound/soc/jz4740/Makefile
  30 index b64d912..e7952d3 100644
  31 --- a/sound/soc/jz4740/Makefile
  32 +++ b/sound/soc/jz4740/Makefile
  33 @@ -10,6 +10,8 @@ obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
  34  # Jz4740 Machine Support
  35  snd-soc-qi-lb60-objs := qi_lb60.o
  36  snd-soc-n516-objs := n516.o
  37 +snd-soc-n526-objs := n526.o
  38
  39  obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
  40  obj-$(CONFIG_SND_JZ4740_SOC_N516) += snd-soc-n516.o
  41 +obj-$(CONFIG_SND_JZ4740_SOC_N526) += snd-soc-n526.o
  42 diff --git a/sound/soc/jz4740/n526.c b/sound/soc/jz4740/n526.c
  43 new file mode 100644
  44 index 0000000..2283904
  45 --- /dev/null
  46 +++ b/sound/soc/jz4740/n526.c
  47 @@ -0,0 +1,169 @@
  48 +/*
  49 + * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
  50 + *
  51 + * This program is free software; you can redistribute it and/or modify
  52 + * it under the terms of the GNU General Public License version 2 as
  53 + * published by the Free Software Foundation.
  54 + *
  55 + *  You should have received a copy of the  GNU General Public License along
  56 + *  with this program; if not, write  to the Free Software Foundation, Inc.,
  57 + *  675 Mass Ave, Cambridge, MA 02139, USA.
  58 + *
  59 + */
  60 +
  61 +#include <linux/module.h>
  62 +#include <linux/moduleparam.h>
  63 +#include <linux/timer.h>
  64 +#include <linux/interrupt.h>
  65 +#include <linux/platform_device.h>
  66 +#include <sound/core.h>
  67 +#include <sound/pcm.h>
  68 +#include <sound/soc.h>
  69 +#include <sound/soc-dapm.h>
  70 +#include <linux/gpio.h>
  71 +
  72 +#include "../codecs/jzcodec.h"
  73 +#include "jz4740-pcm.h"
  74 +#include "jz4740-i2s.h"
  75 +
  76 +#define N526_AMP_EN_GPIO JZ_GPIO_PORTD(4)
  77 +
  78 +static int n526_spk_event(struct snd_soc_dapm_widget *widget,
  79 +                            struct snd_kcontrol *ctrl, int event)
  80 +{
  81 +       gpio_set_value(N526_AMP_EN_GPIO, !SND_SOC_DAPM_EVENT_OFF(event));
  82 +       return 0;
  83 +}
  84 +
  85 +static const struct snd_soc_dapm_widget n526_widgets[] = {
  86 +       SND_SOC_DAPM_SPK("Speaker", n526_spk_event),
  87 +       SND_SOC_DAPM_HP("Headphone", NULL),
  88 +       SND_SOC_DAPM_MIC("Mic", NULL),
  89 +};
  90 +
  91 +static const struct snd_soc_dapm_route n526_routes[] = {
  92 +       {"Mic", NULL, "MIC"},
  93 +       {"Speaker", NULL, "LOUT"},
  94 +       {"Speaker", NULL, "ROUT"},
  95 +       {"Headphone", NULL, "LOUT"},
  96 +       {"Headphone", NULL, "ROUT"},
  97 +};
  98 +
  99 +static const struct snd_kcontrol_new n526_controls[] = {
 100 +       SOC_DAPM_PIN_SWITCH("Speaker"),
 101 +};
 102 +
 103 +#define N526_DAIFMT (SND_SOC_DAIFMT_I2S | \
 104 +                       SND_SOC_DAIFMT_NB_NF | \
 105 +                       SND_SOC_DAIFMT_CBM_CFM)
 106 +
 107 +static int n526_codec_init(struct snd_soc_codec *codec)
 108 +{
 109 +       int ret;
 110 +       struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
 111 +       struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
 112 +
 113 +       snd_soc_dapm_nc_pin(codec, "LIN");
 114 +       snd_soc_dapm_nc_pin(codec, "RIN");
 115 +
 116 +       ret = snd_soc_dai_set_fmt(codec_dai, N526_DAIFMT);
 117 +       if (ret < 0) {
 118 +               dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
 119 +               return ret;
 120 +       }
 121 +
 122 +       ret = snd_soc_dai_set_fmt(cpu_dai, N526_DAIFMT);
 123 +       if (ret < 0) {
 124 +               dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
 125 +               return ret;
 126 +       }
 127 +
 128 +       ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
 129 +               SND_SOC_CLOCK_IN);
 130 +       if (ret < 0) {
 131 +               dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
 132 +               return ret;
 133 +       }
 134 +
 135 +       snd_soc_dapm_new_controls(codec, n526_widgets, ARRAY_SIZE(n526_widgets));
 136 +
 137 +       snd_soc_add_controls(codec, n526_controls,
 138 +                               ARRAY_SIZE(n526_controls));
 139 +
 140 +       snd_soc_dapm_add_routes(codec, n526_routes, ARRAY_SIZE(n526_routes));
 141 +
 142 +       snd_soc_dapm_sync(codec);
 143 +
 144 +       return 0;
 145 +}
 146 +
 147 +static struct snd_soc_dai_link n526_dai = {
 148 +       .name = "jz-codec",
 149 +       .stream_name = "JZCODEC",
 150 +       .cpu_dai = &jz4740_i2s_dai,
 151 +       .codec_dai = &jz_codec_dai,
 152 +       .init = n526_codec_init,
 153 +};
 154 +
 155 +static struct snd_soc_card n526 = {
 156 +       .name = "N526",
 157 +       .dai_link = &n526_dai,
 158 +       .num_links = 1,
 159 +       .platform = &jz4740_soc_platform,
 160 +};
 161 +
 162 +static struct snd_soc_device n526_snd_devdata = {
 163 +       .card = &n526,
 164 +       .codec_dev = &soc_codec_dev_jzcodec,
 165 +};
 166 +
 167 +static struct platform_device *n526_snd_device;
 168 +
 169 +static int __init n526_init(void)
 170 +{
 171 +       int ret;
 172 +
 173 +       n526_snd_device = platform_device_alloc("soc-audio", -1);
 174 +
 175 +       if (!n526_snd_device)
 176 +               return -ENOMEM;
 177 +
 178 +       ret = gpio_request(N526_AMP_EN_GPIO, "AMP");
 179 +       if (ret) {
 180 +               pr_err("n526 snd: Failed to request AMP GPIO(%d): %d\n",
 181 +                               N526_AMP_EN_GPIO, ret);
 182 +               goto err_device_put;
 183 +       }
 184 +
 185 +       gpio_direction_output(JZ_GPIO_PORTD(4), 0);
 186 +
 187 +       platform_set_drvdata(n526_snd_device, &n526_snd_devdata);
 188 +       n526_snd_devdata.dev = &n526_snd_device->dev;
 189 +       ret = platform_device_add(n526_snd_device);
 190 +       if (ret) {
 191 +               pr_err("n526 snd: Failed to add snd soc device: %d\n", ret);
 192 +               goto err_unset_pdata;
 193 +       }
 194 +
 195 +        return 0;
 196 +
 197 +err_unset_pdata:
 198 +       platform_set_drvdata(n526_snd_device, NULL);
 199 +       gpio_free(N526_AMP_EN_GPIO);
 200 +err_device_put:
 201 +       platform_device_put(n526_snd_device);
 202 +
 203 +       return ret;
 204 +}
 205 +module_init(n526_init);
 206 +
 207 +static void __exit n526_exit(void)
 208 +{
 209 +       gpio_free(N526_AMP_EN_GPIO);
 210 +       platform_device_unregister(n526_snd_device);
 211 +}
 212 +module_exit(n526_exit);
 213 +
 214 +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 215 +MODULE_DESCRIPTION("ALSA SoC N526 audio support");
 216 +MODULE_LICENSE("GPL v2");
 217 --
 218 1.5.6.5
 219