sound/soc/fsl/phycore-ac97.c

   1 /*
   2  * phycore-ac97.c  --  SoC audio for imx_phycore in AC97 mode
   3  *
   4  * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation;  either version 2 of the  License, or (at your
   9  *  option) any later version.
  10  *
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/device.h>
  16 #include <linux/i2c.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/soc.h>
  20 #include <asm/mach-types.h>
  21
  22 #include "imx-audmux.h"
  23
  24 static struct snd_soc_card imx_phycore;
  25
  26 static const struct snd_soc_ops imx_phycore_hifi_ops = {
  27 };
  28
  29 static struct snd_soc_dai_link imx_phycore_dai_ac97[] = {
  30         {
  31                 .name           = "HiFi",
  32                 .stream_name    = "HiFi",
  33                 .codec_dai_name         = "wm9712-hifi",
  34                 .codec_name     = "wm9712-codec",
  35                 .cpu_dai_name   = "imx-ssi.0",
  36                 .platform_name  = "imx-ssi.0",
  37                 .ops            = &imx_phycore_hifi_ops,
  38         },
  39 };
  40
  41 static struct snd_soc_card imx_phycore = {
  42         .name           = "PhyCORE-ac97-audio",
  43         .owner          = THIS_MODULE,
  44         .dai_link       = imx_phycore_dai_ac97,
  45         .num_links      = ARRAY_SIZE(imx_phycore_dai_ac97),
  46 };
  47
  48 static struct platform_device *imx_phycore_snd_ac97_device;
  49 static struct platform_device *imx_phycore_snd_device;
  50
  51 static int __init imx_phycore_init(void)
  52 {
  53         int ret;
  54
  55         if (machine_is_pca100()) {
  56                 imx_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
  57                         IMX_AUDMUX_V1_PCR_SYN | /* 4wire mode */
  58                         IMX_AUDMUX_V1_PCR_TFCSEL(3) |
  59                         IMX_AUDMUX_V1_PCR_TCLKDIR | /* clock is output */
  60                         IMX_AUDMUX_V1_PCR_RXDSEL(3));
  61                 imx_audmux_v1_configure_port(3,
  62                         IMX_AUDMUX_V1_PCR_SYN | /* 4wire mode */
  63                         IMX_AUDMUX_V1_PCR_TFCSEL(0) |
  64                         IMX_AUDMUX_V1_PCR_TFSDIR |
  65                         IMX_AUDMUX_V1_PCR_RXDSEL(0));
  66         } else if (machine_is_pcm043()) {
  67                 imx_audmux_v2_configure_port(3,
  68                         IMX_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
  69                         IMX_AUDMUX_V2_PTCR_TFSEL(0) |
  70                         IMX_AUDMUX_V2_PTCR_TFSDIR,
  71                         IMX_AUDMUX_V2_PDCR_RXDSEL(0));
  72                 imx_audmux_v2_configure_port(0,
  73                         IMX_AUDMUX_V2_PTCR_SYN | /* 4wire mode */
  74                         IMX_AUDMUX_V2_PTCR_TCSEL(3) |
  75                         IMX_AUDMUX_V2_PTCR_TCLKDIR, /* clock is output */
  76                         IMX_AUDMUX_V2_PDCR_RXDSEL(3));
  77         } else {
  78                 /* return happy. We might run on a totally different machine */
  79                 return 0;
  80         }
  81
  82         imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
  83         if (!imx_phycore_snd_ac97_device)
  84                 return -ENOMEM;
  85
  86         platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
  87         ret = platform_device_add(imx_phycore_snd_ac97_device);
  88         if (ret)
  89                 goto fail1;
  90
  91         imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
  92         if (!imx_phycore_snd_device) {
  93                 ret = -ENOMEM;
  94                 goto fail2;
  95         }
  96         ret = platform_device_add(imx_phycore_snd_device);
  97
  98         if (ret) {
  99                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
 100                 goto fail3;
 101         }
 102
 103         return 0;
 104
 105 fail3:
 106         platform_device_put(imx_phycore_snd_device);
 107 fail2:
 108         platform_device_del(imx_phycore_snd_ac97_device);
 109 fail1:
 110         platform_device_put(imx_phycore_snd_ac97_device);
 111         return ret;
 112 }
 113
 114 static void __exit imx_phycore_exit(void)
 115 {
 116         platform_device_unregister(imx_phycore_snd_device);
 117         platform_device_unregister(imx_phycore_snd_ac97_device);
 118 }
 119
 120 late_initcall(imx_phycore_init);
 121 module_exit(imx_phycore_exit);
 122
 123 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
 124 MODULE_DESCRIPTION("PhyCORE ALSA SoC driver");
 125 MODULE_LICENSE("GPL");