LXR linux/sound/soc/samsung/jive

   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 <linux/module.h>
  15#include <sound/soc.h>
  16
  17#include <asm/mach-types.h>
  18
  19#include "s3c2412-i2s.h"
  20#include "../codecs/wm8750.h"
  21
  22static const struct snd_soc_dapm_route audio_map[] = {
  23        { "Headphone Jack", NULL, "LOUT1" },
  24        { "Headphone Jack", NULL, "ROUT1" },
  25        { "Internal Speaker", NULL, "LOUT2" },
  26        { "Internal Speaker", NULL, "ROUT2" },
  27        { "LINPUT1", NULL, "Line Input" },
  28        { "RINPUT1", NULL, "Line Input" },
  29};
  30
  31static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
  32        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  33        SND_SOC_DAPM_SPK("Internal Speaker", NULL),
  34        SND_SOC_DAPM_LINE("Line In", NULL),
  35};
  36
  37static int jive_hw_params(struct snd_pcm_substream *substream,
  38                          struct snd_pcm_hw_params *params)
  39{
  40        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  41        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  42        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  43        struct s3c_i2sv2_rate_calc div;
  44        unsigned int clk = 0;
  45        int ret = 0;
  46
  47        switch (params_rate(params)) {
  48        case 8000:
  49        case 16000:
  50        case 48000:
  51        case 96000:
  52                clk = 12288000;
  53                break;
  54        case 11025:
  55        case 22050:
  56        case 44100:
  57                clk = 11289600;
  58                break;
  59        }
  60
  61        s3c_i2sv2_iis_calc_rate(&div, NULL, params_rate(params),
  62                                s3c_i2sv2_get_clock(cpu_dai));
  63
  64        /* set the codec system clock for DAC and ADC */
  65        ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
  66                                     SND_SOC_CLOCK_IN);
  67        if (ret < 0)
  68                return ret;
  69
  70        ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_RCLK, div.fs_div);
  71        if (ret < 0)
  72                return ret;
  73
  74        ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C2412_DIV_PRESCALER,
  75                                     div.clk_div - 1);
  76        if (ret < 0)
  77                return ret;
  78
  79        return 0;
  80}
  81
  82static struct snd_soc_ops jive_ops = {
  83        .hw_params      = jive_hw_params,
  84};
  85
  86static struct snd_soc_dai_link jive_dai = {
  87        .name           = "wm8750",
  88        .stream_name    = "WM8750",
  89        .cpu_dai_name   = "s3c2412-i2s",
  90        .codec_dai_name = "wm8750-hifi",
  91        .platform_name  = "s3c2412-i2s",
  92        .codec_name     = "wm8750.0-001a",
  93        .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
  94                          SND_SOC_DAIFMT_CBS_CFS,
  95        .ops            = &jive_ops,
  96};
  97
  98/* jive audio machine driver */
  99static struct snd_soc_card snd_soc_machine_jive = {
 100        .name           = "Jive",
 101        .owner          = THIS_MODULE,
 102        .dai_link       = &jive_dai,
 103        .num_links      = 1,
 104
 105        .dapm_widgets   = wm8750_dapm_widgets,
 106        .num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
 107        .dapm_routes    = audio_map,
 108        .num_dapm_routes = ARRAY_SIZE(audio_map),
 109        .fully_routed   = true,
 110};
 111
 112static struct platform_device *jive_snd_device;
 113
 114static int __init jive_init(void)
 115{
 116        int ret;
 117
 118        if (!machine_is_jive())
 119                return 0;
 120
 121        printk("JIVE WM8750 Audio support\n");
 122
 123        jive_snd_device = platform_device_alloc("soc-audio", -1);
 124        if (!jive_snd_device)
 125                return -ENOMEM;
 126
 127        platform_set_drvdata(jive_snd_device, &snd_soc_machine_jive);
 128        ret = platform_device_add(jive_snd_device);
 129
 130        if (ret)
 131                platform_device_put(jive_snd_device);
 132
 133        return ret;
 134}
 135
 136static void __exit jive_exit(void)
 137{
 138        platform_device_unregister(jive_snd_device);
 139}
 140
 141module_init(jive_init);
 142module_exit(jive_exit);
 143
 144MODULE_AUTHOR("Ben Dooks <ben@simtec.co.uk>");
 145MODULE_DESCRIPTION("ALSA SoC Jive Audio support");
 146MODULE_LICENSE("GPL");
 147