LXR linux/sound/soc/atmel/snd-soc-afeb9260.c

   1/*
   2 * afeb9260.c  --  SoC audio for AFEB9260
   3 *
   4 * Copyright (C) 2009 Sergey Lapin <slapin@ossfans.org>
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public License
   8 * version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful, but
  11 * WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 * General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18 * 02110-1301 USA
  19 *
  20 */
  21
  22#include <linux/module.h>
  23#include <linux/moduleparam.h>
  24#include <linux/kernel.h>
  25#include <linux/clk.h>
  26#include <linux/platform_device.h>
  27
  28#include <linux/atmel-ssc.h>
  29#include <sound/core.h>
  30#include <sound/pcm.h>
  31#include <sound/pcm_params.h>
  32#include <sound/soc.h>
  33
  34#include <asm/mach-types.h>
  35#include <mach/hardware.h>
  36#include <linux/gpio.h>
  37
  38#include "../codecs/tlv320aic23.h"
  39#include "atmel-pcm.h"
  40#include "atmel_ssc_dai.h"
  41
  42#define CODEC_CLOCK     12000000
  43
  44static int afeb9260_hw_params(struct snd_pcm_substream *substream,
  45                         struct snd_pcm_hw_params *params)
  46{
  47        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  48        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  49        int err;
  50
  51        /* Set the codec system clock for DAC and ADC */
  52        err =
  53            snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
  54
  55        if (err < 0) {
  56                printk(KERN_ERR "can't set codec system clock\n");
  57                return err;
  58        }
  59
  60        return err;
  61}
  62
  63static struct snd_soc_ops afeb9260_ops = {
  64        .hw_params = afeb9260_hw_params,
  65};
  66
  67static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  68        SND_SOC_DAPM_HP("Headphone Jack", NULL),
  69        SND_SOC_DAPM_LINE("Line In", NULL),
  70        SND_SOC_DAPM_MIC("Mic Jack", NULL),
  71};
  72
  73static const struct snd_soc_dapm_route afeb9260_audio_map[] = {
  74        {"Headphone Jack", NULL, "LHPOUT"},
  75        {"Headphone Jack", NULL, "RHPOUT"},
  76
  77        {"LLINEIN", NULL, "Line In"},
  78        {"RLINEIN", NULL, "Line In"},
  79
  80        {"MICIN", NULL, "Mic Jack"},
  81};
  82
  83static int afeb9260_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
  84{
  85        struct snd_soc_codec *codec = rtd->codec;
  86        struct snd_soc_dapm_context *dapm = &codec->dapm;
  87
  88        snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
  89        snd_soc_dapm_enable_pin(dapm, "Line In");
  90        snd_soc_dapm_enable_pin(dapm, "Mic Jack");
  91
  92        return 0;
  93}
  94
  95/* Digital audio interface glue - connects codec <--> CPU */
  96static struct snd_soc_dai_link afeb9260_dai = {
  97        .name = "TLV320AIC23",
  98        .stream_name = "AIC23",
  99        .cpu_dai_name = "atmel-ssc-dai.0",
 100        .codec_dai_name = "tlv320aic23-hifi",
 101        .platform_name = "atmel_pcm-audio",
 102        .codec_name = "tlv320aic23-codec.0-001a",
 103        .init = afeb9260_tlv320aic23_init,
 104        .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_IF |
 105                   SND_SOC_DAIFMT_CBM_CFM,
 106        .ops = &afeb9260_ops,
 107};
 108
 109/* Audio machine driver */
 110static struct snd_soc_card snd_soc_machine_afeb9260 = {
 111        .name = "AFEB9260",
 112        .owner = THIS_MODULE,
 113        .dai_link = &afeb9260_dai,
 114        .num_links = 1,
 115
 116        .dapm_widgets = tlv320aic23_dapm_widgets,
 117        .num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
 118        .dapm_routes = afeb9260_audio_map,
 119        .num_dapm_routes = ARRAY_SIZE(afeb9260_audio_map),
 120};
 121
 122static struct platform_device *afeb9260_snd_device;
 123
 124static int __init afeb9260_soc_init(void)
 125{
 126        int err;
 127        struct device *dev;
 128
 129        if (!(machine_is_afeb9260()))
 130                return -ENODEV;
 131
 132
 133        afeb9260_snd_device = platform_device_alloc("soc-audio", -1);
 134        if (!afeb9260_snd_device) {
 135                printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 136                return -ENOMEM;
 137        }
 138
 139        platform_set_drvdata(afeb9260_snd_device, &snd_soc_machine_afeb9260);
 140        err = platform_device_add(afeb9260_snd_device);
 141        if (err)
 142                goto err1;
 143
 144        dev = &afeb9260_snd_device->dev;
 145
 146        return 0;
 147err1:
 148        platform_device_put(afeb9260_snd_device);
 149        return err;
 150}
 151
 152static void __exit afeb9260_soc_exit(void)
 153{
 154        platform_device_unregister(afeb9260_snd_device);
 155}
 156
 157module_init(afeb9260_soc_init);
 158module_exit(afeb9260_soc_exit);
 159
 160MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
 161MODULE_DESCRIPTION("ALSA SoC for AFEB9260");
 162MODULE_LICENSE("GPL");
 163
 164