sound/soc/sh/fsi-hdmi.c

   1 /*
   2  * FSI - HDMI sound support
   3  *
   4  * Copyright (C) 2010 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This file is subject to the terms and conditions of the GNU General Public
   8  * License.  See the file "COPYING" in the main directory of this archive
   9  * for more details.
  10  */
  11
  12 #include <linux/platform_device.h>
  13 #include <linux/module.h>
  14 #include <sound/sh_fsi.h>
  15
  16 struct fsi_hdmi_data {
  17         const char *cpu_dai;
  18         const char *card;
  19         int id;
  20 };
  21
  22 static int fsi_hdmi_dai_init(struct snd_soc_pcm_runtime *rtd)
  23 {
  24         struct snd_soc_dai *cpu = rtd->cpu_dai;
  25         int ret;
  26
  27         ret = snd_soc_dai_set_fmt(cpu, SND_SOC_DAIFMT_CBM_CFM);
  28
  29         return ret;
  30 }
  31
  32 static struct snd_soc_dai_link fsi_dai_link = {
  33         .name           = "HDMI",
  34         .stream_name    = "HDMI",
  35         .codec_dai_name = "sh_mobile_hdmi-hifi",
  36         .platform_name  = "sh_fsi2",
  37         .codec_name     = "sh-mobile-hdmi",
  38         .init           = fsi_hdmi_dai_init,
  39 };
  40
  41 static struct snd_soc_card fsi_soc_card  = {
  42         .dai_link       = &fsi_dai_link,
  43         .num_links      = 1,
  44 };
  45
  46 static struct platform_device *fsi_snd_device;
  47
  48 static int fsi_hdmi_probe(struct platform_device *pdev)
  49 {
  50         int ret = -ENOMEM;
  51         const struct platform_device_id *id_entry;
  52         struct fsi_hdmi_data *pdata;
  53
  54         id_entry = pdev->id_entry;
  55         if (!id_entry) {
  56                 dev_err(&pdev->dev, "unknown fsi hdmi\n");
  57                 return -ENODEV;
  58         }
  59
  60         pdata = (struct fsi_hdmi_data *)id_entry->driver_data;
  61
  62         fsi_snd_device = platform_device_alloc("soc-audio", pdata->id);
  63         if (!fsi_snd_device)
  64                 goto out;
  65
  66         fsi_dai_link.cpu_dai_name       = pdata->cpu_dai;
  67         fsi_soc_card.name               = pdata->card;
  68
  69         platform_set_drvdata(fsi_snd_device, &fsi_soc_card);
  70         ret = platform_device_add(fsi_snd_device);
  71
  72         if (ret)
  73                 platform_device_put(fsi_snd_device);
  74
  75 out:
  76         return ret;
  77 }
  78
  79 static int fsi_hdmi_remove(struct platform_device *pdev)
  80 {
  81         platform_device_unregister(fsi_snd_device);
  82         return 0;
  83 }
  84
  85 static struct fsi_hdmi_data fsi2_a_hdmi = {
  86         .cpu_dai        = "fsia-dai",
  87         .card           = "FSI2A-HDMI",
  88         .id             = FSI_PORT_A,
  89 };
  90
  91 static struct fsi_hdmi_data fsi2_b_hdmi = {
  92         .cpu_dai        = "fsib-dai",
  93         .card           = "FSI2B-HDMI",
  94         .id             = FSI_PORT_B,
  95 };
  96
  97 static struct platform_device_id fsi_id_table[] = {
  98         /* FSI 2 */
  99         { "sh_fsi2_a_hdmi",     (kernel_ulong_t)&fsi2_a_hdmi },
 100         { "sh_fsi2_b_hdmi",     (kernel_ulong_t)&fsi2_b_hdmi },
 101         {},
 102 };
 103
 104 static struct platform_driver fsi_hdmi = {
 105         .driver = {
 106                 .name   = "fsi-hdmi-audio",
 107         },
 108         .probe          = fsi_hdmi_probe,
 109         .remove         = fsi_hdmi_remove,
 110         .id_table       = fsi_id_table,
 111 };
 112
 113 static int __init fsi_hdmi_init(void)
 114 {
 115         return platform_driver_register(&fsi_hdmi);
 116 }
 117
 118 static void __exit fsi_hdmi_exit(void)
 119 {
 120         platform_driver_unregister(&fsi_hdmi);
 121 }
 122
 123 module_init(fsi_hdmi_init);
 124 module_exit(fsi_hdmi_exit);
 125
 126 MODULE_LICENSE("GPL");
 127 MODULE_DESCRIPTION("Generic SH4 FSI-HDMI sound card");
 128 MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");