git.oblomov.eu Git - linux-2.6/blob - sound/soc/s3c24xx/jive_wm8750.c

   1 /* sound/soc/s3c24xx/jive_wm8750.c
   2  *
   3  * Copyright 2007,2008 Simtec Electronics
   4  *
   5  * Based on sound/soc/pxa/spitz.c
   6  *      Copyright 2005 Wolfson Microelectronics PLC.
   7  *      Copyright 2005 Openedhand Ltd.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  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 <linux/clk.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/soc.h>
  24 #include <sound/soc-dapm.h>
  25
  26 #include <asm/mach-types.h>
  27
  28 #include "s3c24xx-pcm.h"
  29 #include "s3c2412-i2s.h"
  30
  31 #include "../codecs/wm8750.h"
  32
  33 static const struct snd_soc_dapm_route audio_map[] = {
  34         { "Headphone Jack", NULL, "LOUT1" },
  35         { "Headphone Jack", NULL, "ROUT1" },
  36         { "Internal Speaker", NULL, "LOUT2" },
  37         { "Internal Speaker", NULL, "ROUT2" },
  38         { "LINPUT1", NULL, "Line Input" },
  39         { "RINPUT1", NULL, "Line Input" },
  40 };
  41
  42 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
  43         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  44         SND_SOC_DAPM_SPK("Internal Speaker", NULL),
  45         SND_SOC_DAPM_LINE("Line In", NULL),
  46 };
  47
  48 static int jive_startup(struct snd_pcm_substream *substream)
  49 {
  50         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  51         struct snd_soc_codec *codec = rtd->socdev->codec;
  52
  53         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
  54         snd_soc_dapm_enable_pin(codec, "Internal Speaker");
  55         snd_soc_dapm_enable_pin(codec, "Line In");
  56
  57         snd_soc_dapm_sync(codec);
  58
  59         return 0;
  60 }
  61
  62 static int jive_hw_params(struct snd_pcm_substream *substream,
  63                           struct snd_pcm_hw_params *params)
  64 {
  65         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  66         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  67         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  68         struct s3c_i2sv2_rate_calc div;
  69         unsigned int clk = 0;
  70         int ret = 0;
  71
  72         switch (params_rate(params)) {
  73         case 8000:
  74         case 16000:
  75         case 48000:
  76         case 96000:
  77                 clk = 12288000;
  78                 break;
  79         case 11025:
  80         case 22050:
  81         case 44100:
  82                 clk = 11289600;
  83                 break;
  84         }
  85
  86         s3c_i2sv2_calc_rate(&div, NULL, params_rate(params),
  87                             s3c2412_get_iisclk());
  88
  89         /* set codec DAI configuration */
  90         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  91                                   SND_SOC_DAIFMT_NB_NF |
  92                                   SND_SOC_DAIFMT_CBS_CFS);
  93         if (ret < 0)
  94                 return ret;
  95
  96         /* set cpu DAI configuration */
  97         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  98                                   SND_SOC_DAIFMT_NB_NF |
  99                                   SND_SOC_DAIFMT_CBS_CFS);
 100         if (ret < 0)
 101                 return ret;
 102
 103         /* set the codec system clock for DAC and ADC */
 104         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 105                                      SND_SOC_CLOCK_IN);
 106         if (ret < 0)
 107                 return ret;
 108
 109         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
 110         if (ret < 0)
 111                 return ret;
 112
 113         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
 114                                      div.clk_div - 1);
 115         if (ret < 0)
 116                 return ret;
 117
 118         return 0;
 119 }
 120
 121 static struct snd_soc_ops jive_ops = {
 122         .startup        = jive_startup,
 123         .hw_params      = jive_hw_params,
 124 };
 125
 126 static int jive_wm8750_init(struct snd_soc_codec *codec)
 127 {
 128         int err;
 129
 130         /* These endpoints are not being used. */
 131         snd_soc_dapm_disable_pin(codec, "LINPUT2");
 132         snd_soc_dapm_disable_pin(codec, "RINPUT2");
 133         snd_soc_dapm_disable_pin(codec, "LINPUT3");
 134         snd_soc_dapm_disable_pin(codec, "RINPUT3");
 135         snd_soc_dapm_disable_pin(codec, "OUT3");
 136         snd_soc_dapm_disable_pin(codec, "MONO");
 137
 138         /* Add jive specific widgets */
 139         err = snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
 140                                         ARRAY_SIZE(wm8750_dapm_widgets));
 141         if (err) {
 142                 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
 143                        __func__, err);
 144                 return err;
 145         }
 146
 147         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 148         snd_soc_dapm_sync(codec);
 149
 150         return 0;
 151 }
 152
 153 static struct snd_soc_dai_link jive_dai = {
 154         .name           = "wm8750",
 155         .stream_name    = "WM8750",
 156         .cpu_dai        = &s3c2412_i2s_dai,
 157         .codec_dai      = &wm8750_dai,
 158         .init           = jive_wm8750_init,
 159         .ops            = &jive_ops,
 160 };
 161
 162 /* jive audio machine driver */
 163 static struct snd_soc_machine snd_soc_machine_jive = {
 164         .name           = "Jive",
 165         .dai_link       = &jive_dai,
 166         .num_links      = 1,
 167 };
 168
 169 /* jive audio private data */
 170 static struct wm8750_setup_data jive_wm8750_setup = {
 171 };
 172
 173 /* jive audio subsystem */
 174 static struct snd_soc_device jive_snd_devdata = {
 175         .machine        = &snd_soc_machine_jive,
 176         .platform       = &s3c24xx_soc_platform,
 177         .codec_dev      = &soc_codec_dev_wm8750_spi,
 178         .codec_data     = &jive_wm8750_setup,
 179 };
 180
 181 static struct platform_device *jive_snd_device;
 182
 183 static int __init jive_init(void)
 184 {
 185         int ret;
 186
 187         if (!machine_is_jive())
 188                 return 0;
 189
 190         printk("JIVE WM8750 Audio support\n");
 191
 192         jive_snd_device = platform_device_alloc("soc-audio", -1);
 193         if (!jive_snd_device)
 194                 return -ENOMEM;
 195
 196         platform_set_drvdata(jive_snd_device, &jive_snd_devdata);
 197         jive_snd_devdata.dev = &jive_snd_device->dev;
 198         ret = platform_device_add(jive_snd_device);
 199
 200         if (ret)
 201                 platform_device_put(jive_snd_device);
 202
 203         return ret;
 204 }
 205
 206 static void __exit jive_exit(void)
 207 {
 208         platform_device_unregister(jive_snd_device);
 209 }
 210
 211 module_init(jive_init);
 212 module_exit(jive_exit);
 213
 214 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 215 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
 216 MODULE_LICENSE("GPL");