sound/soc/pxa/em-x270.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * SoC audio driver for EM-X270, eXeda and CM-X300
   4  *
   5  * Copyright 2007, 2009 CompuLab, Ltd.
   6  *
   7  * Author: Mike Rapoport <mike@compulab.co.il>
   8  *
   9  * Copied from tosa.c:
  10  * Copyright 2005 Wolfson Microelectronics PLC.
  11  * Copyright 2005 Openedhand Ltd.
  12  *
  13  * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
  14  *          Richard Purdie <richard@openedhand.com>
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/moduleparam.h>
  19 #include <linux/device.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/pcm.h>
  23 #include <sound/soc.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <mach/audio.h>
  27
  28 static struct snd_soc_dai_link em_x270_dai[] = {
  29         {
  30                 .name = "AC97",
  31                 .stream_name = "AC97 HiFi",
  32                 .cpu_dai_name = "pxa2xx-ac97",
  33                 .codec_dai_name = "wm9712-hifi",
  34                 .platform_name = "pxa-pcm-audio",
  35                 .codec_name = "wm9712-codec",
  36         },
  37         {
  38                 .name = "AC97 Aux",
  39                 .stream_name = "AC97 Aux",
  40                 .cpu_dai_name = "pxa2xx-ac97-aux",
  41                 .codec_dai_name = "wm9712-aux",
  42                 .platform_name = "pxa-pcm-audio",
  43                 .codec_name = "wm9712-codec",
  44         },
  45 };
  46
  47 static struct snd_soc_card em_x270 = {
  48         .name = "EM-X270",
  49         .owner = THIS_MODULE,
  50         .dai_link = em_x270_dai,
  51         .num_links = ARRAY_SIZE(em_x270_dai),
  52 };
  53
  54 static struct platform_device *em_x270_snd_device;
  55
  56 static int __init em_x270_init(void)
  57 {
  58         int ret;
  59
  60         if (!(machine_is_em_x270() || machine_is_exeda()
  61               || machine_is_cm_x300()))
  62                 return -ENODEV;
  63
  64         em_x270_snd_device = platform_device_alloc("soc-audio", -1);
  65         if (!em_x270_snd_device)
  66                 return -ENOMEM;
  67
  68         platform_set_drvdata(em_x270_snd_device, &em_x270);
  69         ret = platform_device_add(em_x270_snd_device);
  70
  71         if (ret)
  72                 platform_device_put(em_x270_snd_device);
  73
  74         return ret;
  75 }
  76
  77 static void __exit em_x270_exit(void)
  78 {
  79         platform_device_unregister(em_x270_snd_device);
  80 }
  81
  82 module_init(em_x270_init);
  83 module_exit(em_x270_exit);
  84
  85 /* Module information */
  86 MODULE_AUTHOR("Mike Rapoport");
  87 MODULE_DESCRIPTION("ALSA SoC EM-X270, eXeda and CM-X300");
  88 MODULE_LICENSE("GPL");