target/linux/xburst/patches-2.6.35/065-qi_lb60-sound.patch

   1 From 498365d473a863fdfceff28315ce8561752bc356 Mon Sep 17 00:00:00 2001
   2 From: Lars-Peter Clausen <lars@metafoo.de>
   3 Date: Sat, 19 Jun 2010 16:52:51 +0200
   4 Subject: [PATCH] ASoC: JZ4740: Add qi_lb60 board driver
   5
   6 This patch adds ASoC support for the qi_lb60 board.
   7
   8 Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
   9 Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
  10 Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
  11 ---
  12  sound/soc/jz4740/Kconfig   |    9 +++
  13  sound/soc/jz4740/Makefile  |    4 +
  14  sound/soc/jz4740/qi_lb60.c |  166 ++++++++++++++++++++++++++++++++++++++++++++
  15  3 files changed, 179 insertions(+), 0 deletions(-)
  16  create mode 100644 sound/soc/jz4740/qi_lb60.c
  17
  18 --- a/sound/soc/jz4740/Kconfig
  19 +++ b/sound/soc/jz4740/Kconfig
  20 @@ -12,3 +12,12 @@ config SND_JZ4740_SOC_I2S
  21         help
  22           Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740
  23           based boards.
  24 +
  25 +config SND_JZ4740_SOC_QI_LB60
  26 +       tristate "SoC Audio support for Qi LB60"
  27 +       depends on SND_JZ4740_SOC && JZ4740_QI_LB60
  28 +       select SND_JZ4740_SOC_I2S
  29 +    select SND_SOC_JZ4740_CODEC
  30 +       help
  31 +         Say Y if you want to add support for ASoC audio on the Qi LB60 board
  32 +         a.k.a Qi Ben NanoNote.
  33 --- a/sound/soc/jz4740/Makefile
  34 +++ b/sound/soc/jz4740/Makefile
  35 @@ -7,3 +7,7 @@ snd-soc-jz4740-i2s-objs := jz4740-i2s.o
  36  obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o
  37  obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
  38
  39 +# Jz4740 Machine Support
  40 +snd-soc-qi-lb60-objs := qi_lb60.o
  41 +
  42 +obj-$(CONFIG_SND_JZ4740_SOC_QI_LB60) += snd-soc-qi-lb60.o
  43 --- /dev/null
  44 +++ b/sound/soc/jz4740/qi_lb60.c
  45 @@ -0,0 +1,166 @@
  46 +/*
  47 + * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
  48 + *
  49 + * This program is free software; you can redistribute it and/or modify
  50 + * it under the terms of the GNU General Public License version 2 as
  51 + * published by the Free Software Foundation.
  52 + *
  53 + *  You should have received a copy of the  GNU General Public License along
  54 + *  with this program; if not, write  to the Free Software Foundation, Inc.,
  55 + *  675 Mass Ave, Cambridge, MA 02139, USA.
  56 + *
  57 + */
  58 +
  59 +#include <linux/module.h>
  60 +#include <linux/moduleparam.h>
  61 +#include <linux/timer.h>
  62 +#include <linux/interrupt.h>
  63 +#include <linux/platform_device.h>
  64 +#include <sound/core.h>
  65 +#include <sound/pcm.h>
  66 +#include <sound/soc.h>
  67 +#include <sound/soc-dapm.h>
  68 +#include <linux/gpio.h>
  69 +
  70 +#include "../codecs/jz4740.h"
  71 +#include "jz4740-pcm.h"
  72 +#include "jz4740-i2s.h"
  73 +
  74 +
  75 +#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
  76 +#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
  77 +
  78 +static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
  79 +                            struct snd_kcontrol *ctrl, int event)
  80 +{
  81 +       int on = 0;
  82 +       if (event & SND_SOC_DAPM_POST_PMU)
  83 +               on = 1;
  84 +       else if (event & SND_SOC_DAPM_PRE_PMD)
  85 +               on = 0;
  86 +
  87 +       gpio_set_value(QI_LB60_SND_GPIO, on);
  88 +       gpio_set_value(QI_LB60_AMP_GPIO, on);
  89 +
  90 +       return 0;
  91 +}
  92 +
  93 +static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
  94 +       SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
  95 +       SND_SOC_DAPM_MIC("Mic", NULL),
  96 +};
  97 +
  98 +static const struct snd_soc_dapm_route qi_lb60_routes[] = {
  99 +       {"Mic", NULL, "MIC"},
 100 +       {"Speaker", NULL, "LOUT"},
 101 +       {"Speaker", NULL, "ROUT"},
 102 +};
 103 +
 104 +#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
 105 +                       SND_SOC_DAIFMT_NB_NF | \
 106 +                       SND_SOC_DAIFMT_CBM_CFM)
 107 +
 108 +static int qi_lb60_codec_init(struct snd_soc_codec *codec)
 109 +{
 110 +       int ret;
 111 +       struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_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(cpu_dai, QI_LB60_DAIFMT);
 117 +       if (ret < 0) {
 118 +               dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
 119 +               return ret;
 120 +       }
 121 +
 122 +       snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
 123 +       snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
 124 +       snd_soc_dapm_sync(codec);
 125 +
 126 +       return 0;
 127 +}
 128 +
 129 +static struct snd_soc_dai_link qi_lb60_dai = {
 130 +       .name = "jz4740",
 131 +       .stream_name = "jz4740",
 132 +       .cpu_dai = &jz4740_i2s_dai,
 133 +       .codec_dai = &jz4740_codec_dai,
 134 +       .init = qi_lb60_codec_init,
 135 +};
 136 +
 137 +static struct snd_soc_card qi_lb60 = {
 138 +       .name = "QI LB60",
 139 +       .dai_link = &qi_lb60_dai,
 140 +       .num_links = 1,
 141 +       .platform = &jz4740_soc_platform,
 142 +};
 143 +
 144 +static struct snd_soc_device qi_lb60_snd_devdata = {
 145 +       .card = &qi_lb60,
 146 +       .codec_dev = &soc_codec_dev_jz4740_codec,
 147 +};
 148 +
 149 +static struct platform_device *qi_lb60_snd_device;
 150 +
 151 +static int __init qi_lb60_init(void)
 152 +{
 153 +       int ret;
 154 +
 155 +       qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
 156 +
 157 +       if (!qi_lb60_snd_device)
 158 +               return -ENOMEM;
 159 +
 160 +       ret = gpio_request(QI_LB60_SND_GPIO, "SND");
 161 +       if (ret) {
 162 +               pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
 163 +                               QI_LB60_SND_GPIO, ret);
 164 +               goto err_device_put;
 165 +       }
 166 +
 167 +       ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
 168 +       if (ret) {
 169 +               pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
 170 +                               QI_LB60_AMP_GPIO, ret);
 171 +               goto err_gpio_free_snd;
 172 +       }
 173 +
 174 +       gpio_direction_output(QI_LB60_SND_GPIO, 0);
 175 +       gpio_direction_output(QI_LB60_AMP_GPIO, 0);
 176 +
 177 +       platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata);
 178 +       qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;
 179 +
 180 +       ret = platform_device_add(qi_lb60_snd_device);
 181 +       if (ret) {
 182 +               pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
 183 +               goto err_unset_pdata;
 184 +       }
 185 +
 186 +        return 0;
 187 +
 188 +err_unset_pdata:
 189 +       platform_set_drvdata(qi_lb60_snd_device, NULL);
 190 +/*err_gpio_free_amp:*/
 191 +       gpio_free(QI_LB60_AMP_GPIO);
 192 +err_gpio_free_snd:
 193 +       gpio_free(QI_LB60_SND_GPIO);
 194 +err_device_put:
 195 +       platform_device_put(qi_lb60_snd_device);
 196 +
 197 +       return ret;
 198 +}
 199 +module_init(qi_lb60_init);
 200 +
 201 +static void __exit qi_lb60_exit(void)
 202 +{
 203 +       gpio_free(QI_LB60_AMP_GPIO);
 204 +       gpio_free(QI_LB60_SND_GPIO);
 205 +       platform_device_unregister(qi_lb60_snd_device);
 206 +}
 207 +module_exit(qi_lb60_exit);
 208 +
 209 +MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 210 +MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
 211 +MODULE_LICENSE("GPL v2");