target/linux/xburst/files-2.6.32/sound/soc/jz4740/qi_lb60.c

   1 /*
   2  * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  *  You should have received a copy of the  GNU General Public License along
   9  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  10  *  675 Mass Ave, Cambridge, MA 02139, USA.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/timer.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/platform_device.h>
  19 #include <sound/core.h>
  20 #include <sound/pcm.h>
  21 #include <sound/soc.h>
  22 #include <sound/soc-dapm.h>
  23 #include <linux/gpio.h>
  24
  25 #include "../codecs/jzcodec.h"
  26 #include "jz4740-pcm.h"
  27 #include "jz4740-i2s.h"
  28
  29
  30 #define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
  31 #define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
  32
  33 static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
  34                              struct snd_kcontrol *ctrl, int event)
  35 {
  36         int on = 0;
  37         if (event & SND_SOC_DAPM_POST_PMU)
  38                 on = 1;
  39         else if (event & SND_SOC_DAPM_PRE_PMD)
  40                 on = 0;
  41
  42         gpio_set_value(QI_LB60_SND_GPIO, on);
  43         gpio_set_value(QI_LB60_AMP_GPIO, on);
  44
  45         return 0;
  46 }
  47
  48 static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
  49         SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
  50         SND_SOC_DAPM_MIC("Mic", NULL),
  51 };
  52
  53 static const struct snd_soc_dapm_route qi_lb60_routes[] = {
  54         {"Mic", NULL, "MIC"},
  55         {"Speaker", NULL, "LOUT"},
  56         {"Speaker", NULL, "ROUT"},
  57 };
  58
  59 #define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
  60                         SND_SOC_DAIFMT_NB_NF | \
  61                         SND_SOC_DAIFMT_CBM_CFM)
  62
  63 static int qi_lb60_codec_init(struct snd_soc_codec *codec)
  64 {
  65         int ret;
  66         struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
  67         struct snd_soc_dai *codec_dai = codec->socdev->card->dai_link->codec_dai;
  68
  69         snd_soc_dapm_nc_pin(codec, "LIN");
  70         snd_soc_dapm_nc_pin(codec, "RIN");
  71
  72         ret = snd_soc_dai_set_fmt(codec_dai, QI_LB60_DAIFMT);
  73         if (ret < 0) {
  74                 dev_err(codec->dev, "Failed to set codec dai format: %d\n", ret);
  75                 return ret;
  76         }
  77
  78         ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
  79         if (ret < 0) {
  80                 dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
  81                 return ret;
  82         }
  83
  84         ret = snd_soc_dai_set_sysclk(codec_dai, JZCODEC_SYSCLK, 111,
  85                 SND_SOC_CLOCK_IN);
  86         if (ret < 0) {
  87                 dev_err(codec->dev, "Failed to set codec dai sysclk: %d\n", ret);
  88                 return ret;
  89         }
  90
  91         snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
  92
  93         snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
  94
  95         snd_soc_dapm_sync(codec);
  96
  97         return 0;
  98 }
  99
 100 static struct snd_soc_dai_link qi_lb60_dai = {
 101         .name = "jz-codec",
 102         .stream_name = "JZCODEC",
 103         .cpu_dai = &jz4740_i2s_dai,
 104         .codec_dai = &jz_codec_dai,
 105         .init = qi_lb60_codec_init,
 106 };
 107
 108 static struct snd_soc_card qi_lb60 = {
 109         .name = "QI LB60",
 110         .dai_link = &qi_lb60_dai,
 111         .num_links = 1,
 112         .platform = &jz4740_soc_platform,
 113 };
 114
 115 static struct snd_soc_device qi_lb60_snd_devdata = {
 116         .card = &qi_lb60,
 117         .codec_dev = &soc_codec_dev_jzcodec,
 118 };
 119
 120 static struct platform_device *qi_lb60_snd_device;
 121
 122 static int __init qi_lb60_init(void)
 123 {
 124         int ret;
 125
 126         qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
 127
 128         if (!qi_lb60_snd_device)
 129                 return -ENOMEM;
 130
 131
 132         ret = gpio_request(QI_LB60_SND_GPIO, "SND");
 133         if (ret) {
 134                 pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
 135                                 QI_LB60_SND_GPIO, ret);
 136                 goto err_device_put;
 137         }
 138
 139         ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
 140         if (ret) {
 141                 pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
 142                                 QI_LB60_AMP_GPIO, ret);
 143                 goto err_gpio_free_snd;
 144         }
 145
 146         gpio_direction_output(JZ_GPIO_PORTB(29), 0);
 147         gpio_direction_output(JZ_GPIO_PORTD(4), 0);
 148
 149         platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata);
 150         qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;
 151         ret = platform_device_add(qi_lb60_snd_device);
 152         if (ret) {
 153                 pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
 154                 goto err_unset_pdata;
 155         }
 156
 157          return 0;
 158
 159 err_unset_pdata:
 160         platform_set_drvdata(qi_lb60_snd_device, NULL);
 161 /*err_gpio_free_amp:*/
 162         gpio_free(QI_LB60_AMP_GPIO);
 163 err_gpio_free_snd:
 164         gpio_free(QI_LB60_SND_GPIO);
 165 err_device_put:
 166         platform_device_put(qi_lb60_snd_device);
 167
 168         return ret;
 169 }
 170 module_init(qi_lb60_init);
 171
 172 static void __exit qi_lb60_exit(void)
 173 {
 174         gpio_free(QI_LB60_AMP_GPIO);
 175         gpio_free(QI_LB60_SND_GPIO);
 176         platform_device_unregister(qi_lb60_snd_device);
 177 }
 178 module_exit(qi_lb60_exit);
 179
 180 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 181 MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
 182 MODULE_LICENSE("GPL v2");