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 #include <sound/soc-dapm.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <mach/hardware.h>
  37 #include <linux/gpio.h>
  38
  39 #include "../codecs/tlv320aic23.h"
  40 #include "atmel-pcm.h"
  41 #include "atmel_ssc_dai.h"
  42
  43 #define CODEC_CLOCK     12000000
  44
  45 static int afeb9260_hw_params(struct snd_pcm_substream *substream,
  46                          struct snd_pcm_hw_params *params)
  47 {
  48         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  49         struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
  50         struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
  51         int err;
  52
  53         /* Set codec DAI configuration */
  54         err = snd_soc_dai_set_fmt(codec_dai,
  55                                   SND_SOC_DAIFMT_I2S|
  56                                   SND_SOC_DAIFMT_NB_IF |
  57                                   SND_SOC_DAIFMT_CBM_CFM);
  58         if (err < 0) {
  59                 printk(KERN_ERR "can't set codec DAI configuration\n");
  60                 return err;
  61         }
  62
  63         /* Set cpu DAI configuration */
  64         err = snd_soc_dai_set_fmt(cpu_dai,
  65                                   SND_SOC_DAIFMT_I2S |
  66                                   SND_SOC_DAIFMT_NB_IF |
  67                                   SND_SOC_DAIFMT_CBM_CFM);
  68         if (err < 0) {
  69                 printk(KERN_ERR "can't set cpu DAI configuration\n");
  70                 return err;
  71         }
  72
  73         /* Set the codec system clock for DAC and ADC */
  74         err =
  75             snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
  76
  77         if (err < 0) {
  78                 printk(KERN_ERR "can't set codec system clock\n");
  79                 return err;
  80         }
  81
  82         return err;
  83 }
  84
  85 static struct snd_soc_ops afeb9260_ops = {
  86         .hw_params = afeb9260_hw_params,
  87 };
  88
  89 static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
  90         SND_SOC_DAPM_HP("Headphone Jack", NULL),
  91         SND_SOC_DAPM_LINE("Line In", NULL),
  92         SND_SOC_DAPM_MIC("Mic Jack", NULL),
  93 };
  94
  95 static const struct snd_soc_dapm_route audio_map[] = {
  96         {"Headphone Jack", NULL, "LHPOUT"},
  97         {"Headphone Jack", NULL, "RHPOUT"},
  98
  99         {"LLINEIN", NULL, "Line In"},
 100         {"RLINEIN", NULL, "Line In"},
 101
 102         {"MICIN", NULL, "Mic Jack"},
 103 };
 104
 105 static int afeb9260_tlv320aic23_init(struct snd_soc_codec *codec)
 106 {
 107
 108         /* Add afeb9260 specific widgets */
 109         snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
 110                                   ARRAY_SIZE(tlv320aic23_dapm_widgets));
 111
 112         /* Set up afeb9260 specific audio path audio_map */
 113         snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
 114
 115         snd_soc_dapm_enable_pin(codec, "Headphone Jack");
 116         snd_soc_dapm_enable_pin(codec, "Line In");
 117         snd_soc_dapm_enable_pin(codec, "Mic Jack");
 118
 119         snd_soc_dapm_sync(codec);
 120
 121         return 0;
 122 }
 123
 124 /* Digital audio interface glue - connects codec <--> CPU */
 125 static struct snd_soc_dai_link afeb9260_dai = {
 126         .name = "TLV320AIC23",
 127         .stream_name = "AIC23",
 128         .cpu_dai = &atmel_ssc_dai[0],
 129         .codec_dai = &tlv320aic23_dai,
 130         .init = afeb9260_tlv320aic23_init,
 131         .ops = &afeb9260_ops,
 132 };
 133
 134 /* Audio machine driver */
 135 static struct snd_soc_card snd_soc_machine_afeb9260 = {
 136         .name = "AFEB9260",
 137         .platform = &atmel_soc_platform,
 138         .dai_link = &afeb9260_dai,
 139         .num_links = 1,
 140 };
 141
 142 /* Audio subsystem */
 143 static struct snd_soc_device afeb9260_snd_devdata = {
 144         .card = &snd_soc_machine_afeb9260,
 145         .codec_dev = &soc_codec_dev_tlv320aic23,
 146 };
 147
 148 static struct platform_device *afeb9260_snd_device;
 149
 150 static int __init afeb9260_soc_init(void)
 151 {
 152         int err;
 153         struct device *dev;
 154         struct atmel_ssc_info *ssc_p = afeb9260_dai.cpu_dai->private_data;
 155         struct ssc_device *ssc = NULL;
 156
 157         if (!(machine_is_afeb9260()))
 158                 return -ENODEV;
 159
 160         ssc = ssc_request(0);
 161         if (IS_ERR(ssc)) {
 162                 printk(KERN_ERR "ASoC: Failed to request SSC 0\n");
 163                 err = PTR_ERR(ssc);
 164                 ssc = NULL;
 165                 goto err_ssc;
 166         }
 167         ssc_p->ssc = ssc;
 168
 169         afeb9260_snd_device = platform_device_alloc("soc-audio", -1);
 170         if (!afeb9260_snd_device) {
 171                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 172                 return -ENOMEM;
 173         }
 174
 175         platform_set_drvdata(afeb9260_snd_device, &afeb9260_snd_devdata);
 176         afeb9260_snd_devdata.dev = &afeb9260_snd_device->dev;
 177         err = platform_device_add(afeb9260_snd_device);
 178         if (err)
 179                 goto err1;
 180
 181         dev = &afeb9260_snd_device->dev;
 182
 183         return 0;
 184 err1:
 185         platform_device_del(afeb9260_snd_device);
 186         platform_device_put(afeb9260_snd_device);
 187 err_ssc:
 188         return err;
 189
 190 }
 191
 192 static void __exit afeb9260_soc_exit(void)
 193 {
 194         platform_device_unregister(afeb9260_snd_device);
 195 }
 196
 197 module_init(afeb9260_soc_init);
 198 module_exit(afeb9260_soc_exit);
 199
 200 MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>");
 201 MODULE_DESCRIPTION("ALSA SoC for AFEB9260");
 202 MODULE_LICENSE("GPL");
 203