sound/soc/samsung/jive_wm8750.c

   1 /* sound/soc/samsung/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 <sound/soc.h>
  15
  16 #include <asm/mach-types.h>
  17
  18 #include "s3c2412-i2s.h"
  19 #include "../codecs/wm8750.h"
  20
  21 static const struct snd_soc_dapm_route audio_map[] = {
  22         { "Headphone Jack", NULL, "LOUT1" },
  23         { "Headphone Jack", NULL, "ROUT1" },
  24         { "Internal Speaker", NULL, "LOUT2" },
  25         { "Internal Speaker", NULL, "ROUT2" },
  26         { "LINPUT1", NULL, "Line Input" },
  27         { "RINPUT1", NULL, "Line Input" },
  28 };
  29
  30 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
  31         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  32         SND_SOC_DAPM_SPK("Internal Speaker", NULL),
  33         SND_SOC_DAPM_LINE("Line In", NULL),
  34 };
  35
  36 static int jive_hw_params(struct snd_pcm_substream *substream,
  37                           struct snd_pcm_hw_params *params)
  38 {
  39         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  40         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  41         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  42         struct s3c_i2sv2_rate_calc div;
  43         unsigned int clk = 0;
  44         int ret = 0;
  45
  46         switch (params_rate(params)) {
  47         case 8000:
  48         case 16000:
  49         case 48000:
  50         case 96000:
  51                 clk = 12288000;
  52                 break;
  53         case 11025:
  54         case 22050:
  55         case 44100:
  56                 clk = 11289600;
  57                 break;
  58         }
  59
  60         s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
  61                                 s3c_i2sv2_get_clock(cpu_dai));
  62
  63         /* set codec DAI configuration */
  64         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
  65                                   SND_SOC_DAIFMT_NB_NF |
  66                                   SND_SOC_DAIFMT_CBS_CFS);
  67         if (ret < 0)
  68                 return ret;
  69
  70         /* set cpu DAI configuration */
  71         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
  72                                   SND_SOC_DAIFMT_NB_NF |
  73                                   SND_SOC_DAIFMT_CBS_CFS);
  74         if (ret < 0)
  75                 return ret;
  76
  77         /* set the codec system clock for DAC and ADC */
  78         ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  79                                      SND_SOC_CLOCK_IN);
  80         if (ret < 0)
  81                 return ret;
  82
  83         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
  84         if (ret < 0)
  85                 return ret;
  86
  87         ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
  88                                      div.clk_div - 1);
  89         if (ret < 0)
  90                 return ret;
  91
  92         return 0;
  93 }
  94
  95 static struct snd_soc_ops jive_ops = {
  96         .hw_params      = jive_hw_params,
  97 };
  98
  99 static int jive_wm8750_init(struct snd_soc_pcm_runtime *rtd)
 100 {
 101         struct snd_soc_codec *codec = rtd->codec;
 102         struct snd_soc_dapm_context *dapm = &codec->dapm;
 103         int err;
 104
 105         /* These endpoints are not being used. */
 106         snd_soc_dapm_nc_pin(dapm, "LINPUT2");
 107         snd_soc_dapm_nc_pin(dapm, "RINPUT2");
 108         snd_soc_dapm_nc_pin(dapm, "LINPUT3");
 109         snd_soc_dapm_nc_pin(dapm, "RINPUT3");
 110         snd_soc_dapm_nc_pin(dapm, "OUT3");
 111         snd_soc_dapm_nc_pin(dapm, "MONO");
 112
 113         /* Add jive specific widgets */
 114         err = snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
 115                                         ARRAY_SIZE(wm8750_dapm_widgets));
 116         if (err) {
 117                 printk(KERN_ERR "%s: failed to add widgets (%d)\n",
 118                        __func__, err);
 119                 return err;
 120         }
 121
 122         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 123         snd_soc_dapm_sync(dapm);
 124
 125         return 0;
 126 }
 127
 128 static struct snd_soc_dai_link jive_dai = {
 129         .name           = "wm8750",
 130         .stream_name    = "WM8750",
 131         .cpu_dai_name   = "s3c2412-i2s",
 132         .codec_dai_name = "wm8750-hifi",
 133         .platform_name  = "samsung-audio",
 134         .codec_name     = "wm8750-codec.0-001a",
 135         .init           = jive_wm8750_init,
 136         .ops            = &jive_ops,
 137 };
 138
 139 /* jive audio machine driver */
 140 static struct snd_soc_card snd_soc_machine_jive = {
 141         .name           = "Jive",
 142         .dai_link       = &jive_dai,
 143         .num_links      = 1,
 144 };
 145
 146 static struct platform_device *jive_snd_device;
 147
 148 static int __init jive_init(void)
 149 {
 150         int ret;
 151
 152         if (!machine_is_jive())
 153                 return 0;
 154
 155         printk("JIVE WM8750 Audio support\n");
 156
 157         jive_snd_device = platform_device_alloc("soc-audio", -1);
 158         if (!jive_snd_device)
 159                 return -ENOMEM;
 160
 161         platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
 162         ret = platform_device_add(jive_snd_device);
 163
 164         if (ret)
 165                 platform_device_put(jive_snd_device);
 166
 167         return ret;
 168 }
 169
 170 static void __exit jive_exit(void)
 171 {
 172         platform_device_unregister(jive_snd_device);
 173 }
 174
 175 module_init(jive_init);
 176 module_exit(jive_exit);
 177
 178 MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 179 MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
 180 MODULE_LICENSE("GPL");