LXR linux/sound/soc/cirrus/snappercl15.c

   1/*
   2 * snappercl15.c -- SoC audio for Bluewater Systems Snapper CL15 module
   3 *
   4 * Copyright (C) 2008 Bluewater Systems Ltd
   5 * Author: Ryan Mallon
   6 *
   7 *  This program is free software; you can redistribute  it and/or modify it
   8 *  under  the terms of  the GNU General  Public License as published by the
   9 *  Free Software Foundation;  either version 2 of the  License, or (at your
  10 *  option) any later version.
  11 *
  12 */
  13
  14#include <linux/platform_device.h>
  15#include <linux/module.h>
  16#include <sound/core.h>
  17#include <sound/pcm.h>
  18#include <sound/soc.h>
  19
  20#include <asm/mach-types.h>
  21#include <mach/hardware.h>
  22
  23#include "../codecs/tlv320aic23.h"
  24
  25#define CODEC_CLOCK 5644800
  26
  27static int snappercl15_hw_params(struct snd_pcm_substream *substream,
  28                                 struct snd_pcm_hw_params *params)
  29{
  30        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  31        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  32        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  33        int err;
  34
  35        err = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, 
  36                                     SND_SOC_CLOCK_IN);
  37        if (err)
  38                return err;
  39
  40        err = snd_soc_dai_set_sysclk(cpu_dai, 0, CODEC_CLOCK, 
  41                                     SND_SOC_CLOCK_OUT);
  42        if (err)
  43                return err;
  44
  45        return 0;
  46}
  47
  48static struct snd_soc_ops snappercl15_ops = {
  49        .hw_params      = snappercl15_hw_params,
  50};
  51
  52static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  53        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  54        SND_SOC_DAPM_LINE("Line In", NULL),
  55        SND_SOC_DAPM_MIC("Mic Jack", NULL),
  56};
  57
  58static const struct snd_soc_dapm_route audio_map[] = {
  59        {"Headphone Jack", NULL, "LHPOUT"},
  60        {"Headphone Jack", NULL, "RHPOUT"},
  61
  62        {"LLINEIN", NULL, "Line In"},
  63        {"RLINEIN", NULL, "Line In"},
  64
  65        {"MICIN", NULL, "Mic Jack"},
  66};
  67
  68static struct snd_soc_dai_link snappercl15_dai = {
  69        .name           = "tlv320aic23",
  70        .stream_name    = "AIC23",
  71        .cpu_dai_name   = "ep93xx-i2s",
  72        .codec_dai_name = "tlv320aic23-hifi",
  73        .codec_name     = "tlv320aic23-codec.0-001a",
  74        .platform_name  = "ep93xx-i2s",
  75        .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
  76                          SND_SOC_DAIFMT_CBS_CFS,
  77        .ops            = &snappercl15_ops,
  78};
  79
  80static struct snd_soc_card snd_soc_snappercl15 = {
  81        .name           = "Snapper CL15",
  82        .owner          = THIS_MODULE,
  83        .dai_link       = &snappercl15_dai,
  84        .num_links      = 1,
  85
  86        .dapm_widgets           = tlv320aic23_dapm_widgets,
  87        .num_dapm_widgets       = ARRAY_SIZE(tlv320aic23_dapm_widgets),
  88        .dapm_routes            = audio_map,
  89        .num_dapm_routes        = ARRAY_SIZE(audio_map),
  90};
  91
  92static int snappercl15_probe(struct platform_device *pdev)
  93{
  94        struct snd_soc_card *card = &snd_soc_snappercl15;
  95        int ret;
  96
  97        ret = ep93xx_i2s_acquire();
  98        if (ret)
  99                return ret;
 100
 101        card->dev = &pdev->dev;
 102
 103        ret = snd_soc_register_card(card);
 104        if (ret) {
 105                dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
 106                        ret);
 107                ep93xx_i2s_release();
 108        }
 109
 110        return ret;
 111}
 112
 113static int snappercl15_remove(struct platform_device *pdev)
 114{
 115        struct snd_soc_card *card = platform_get_drvdata(pdev);
 116
 117        snd_soc_unregister_card(card);
 118        ep93xx_i2s_release();
 119
 120        return 0;
 121}
 122
 123static struct platform_driver snappercl15_driver = {
 124        .driver         = {
 125                .name   = "snappercl15-audio",
 126        },
 127        .probe          = snappercl15_probe,
 128        .remove         = snappercl15_remove,
 129};
 130
 131module_platform_driver(snappercl15_driver);
 132
 133MODULE_AUTHOR("Ryan Mallon");
 134MODULE_DESCRIPTION("ALSA SoC Snapper CL15");
 135MODULE_LICENSE("GPL");
 136MODULE_ALIAS("platform:snappercl15-audio");
 137