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