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
  44 static 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         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  50         int err;
  51
  52         /* Set codec DAI configuration */
  53         err = snd_soc_dai_set_fmt(codec_dai,
  54                                   SND_SOC_DAIFMT_I2S|
  55                                   SND_SOC_DAIFMT_NB_IF |
  56                                   SND_SOC_DAIFMT_CBM_CFM);
  57         if (err < 0) {
  58                 printk(KERN_ERR "can't set codec DAI configuration\n");
  59                 return err;
  60         }
  61
  62         /* Set cpu DAI configuration */
  63         err = snd_soc_dai_set_fmt(cpu_dai,
  64                                   SND_SOC_DAIFMT_I2S |
  65                                   SND_SOC_DAIFMT_NB_IF |
  66                                   SND_SOC_DAIFMT_CBM_CFM);
  67         if (err < 0) {
  68                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  69                 return err;
  70         }
  71
  72         /* Set the codec system clock for DAC and ADC */
  73         err =
  74             snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
  75
  76         if (err < 0) {
  77                 printk(KERN_ERR "can't set codec system clock\n");
  78                 return err;
  79         }
  80
  81         return err;
  82 }
  83
  84 static struct snd_soc_ops afeb9260_ops = {
  85         .hw_params = afeb9260_hw_params,
  86 };
  87
  88 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  89         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  90         SND_SOC_DAPM_LINE("Line In", NULL),
  91         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  92 };
  93
  94 static const struct snd_soc_dapm_route audio_map[] = {
  95         {"Headphone Jack", NULL, "LHPOUT"},
  96         {"Headphone Jack", NULL, "RHPOUT"},
  97
  98         {"LLINEIN", NULL, "Line In"},
  99         {"RLINEIN", NULL, "Line In"},
 100
 101         {"MICIN", NULL, "Mic Jack"},
 102 };
 103
 104 static int afeb9260_tlv320aic23_init(struct snd_soc_pcm_runtime *rtd)
 105 {
 106         struct snd_soc_codec *codec = rtd->codec;
 107         struct snd_soc_dapm_context *dapm = &codec->dapm;
 108
 109         /* Add afeb9260 specific widgets */
 110         snd_soc_dapm_new_controls(dapm, tlv320aic23_dapm_widgets,
 111                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 112
 113         /* Set up afeb9260 specific audio path audio_map */
 114         snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
 115
 116         snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
 117         snd_soc_dapm_enable_pin(dapm, "Line In");
 118         snd_soc_dapm_enable_pin(dapm, "Mic Jack");
 119
 120         return 0;
 121 }
 122
 123 /* Digital audio interface glue - connects codec <--> CPU */
 124 static struct snd_soc_dai_link afeb9260_dai = {
 125         .name = "TLV320AIC23",
 126         .stream_name = "AIC23",
 127         .cpu_dai_name = "atmel-ssc-dai.0",
 128         .codec_dai_name = "tlv320aic23-hifi",
 129         .platform_name = "atmel_pcm-audio",
 130         .codec_name = "tlv320aic23-codec.0-001a",
 131         .init = afeb9260_tlv320aic23_init,
 132         .ops = &afeb9260_ops,
 133 };
 134
 135 /* Audio machine driver */
 136 static struct snd_soc_card snd_soc_machine_afeb9260 = {
 137         .name = "AFEB9260",
 138         .owner = THIS_MODULE,
 139         .dai_link = &afeb9260_dai,
 140         .num_links = 1,
 141 };
 142
 143 static struct platform_device *afeb9260_snd_device;
 144
 145 static int __init afeb9260_soc_init(void)
 146 {
 147         int err;
 148         struct device *dev;
 149
 150         if (!(machine_is_afeb9260()))
 151                 return -ENODEV;
 152
 153
 154         afeb9260_snd_device = platform_device_alloc("soc-audio", -1);
 155         if (!afeb9260_snd_device) {
 156                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 157                 return -ENOMEM;
 158         }
 159
 160         platform_set_drvdata(afeb9260_snd_device, &snd_soc_machine_afeb9260);
 161         err = platform_device_add(afeb9260_snd_device);
 162         if (err)
 163                 goto err1;
 164
 165         dev = &afeb9260_snd_device->dev;
 166
 167         return 0;
 168 err1:
 169         platform_device_put(afeb9260_snd_device);
 170         return err;
 171 }
 172
 173 static void __exit afeb9260_soc_exit(void)
 174 {
 175         platform_device_unregister(afeb9260_snd_device);
 176 }
 177
 178 module_init(afeb9260_soc_init);
 179 module_exit(afeb9260_soc_exit);
 180
 181 MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
 182 MODULE_DESCRIPTION("ALSA SoC for AFEB9260");
 183 MODULE_LICENSE("GPL");
 184