Bluetooth: "Revert Align minimum encryption key size for LE and BR/EDR connections"
[linux-4.9.git] / sound / soc / codecs / spdif_transmitter.c
1 /*
2  * ALSA SoC SPDIF DIT driver
3  *
4  *  This driver is used by controllers which can operate in DIT (SPDI/F) where
5  *  no codec is needed.  This file provides stub codec that can be used
6  *  in these configurations. TI DaVinci Audio controller uses this driver.
7  *
8  * Author:      Steve Chen,  <schen@mvista.com>
9  * Copyright:   (C) 2009 MontaVista Software, Inc., <source@mvista.com>
10  * Copyright:   (C) 2009  Texas Instruments, India
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License version 2 as
14  * published by the Free Software Foundation.
15  */
16
17 #include <linux/module.h>
18 #include <linux/moduleparam.h>
19 #include <linux/slab.h>
20 #include <sound/soc.h>
21 #include <sound/pcm.h>
22 #include <sound/initval.h>
23 #include <linux/of.h>
24
25 #define DRV_NAME "spdif-dit"
26
27 #define STUB_RATES      SNDRV_PCM_RATE_8000_192000
28 #define STUB_FORMATS    (SNDRV_PCM_FMTBIT_S16_LE | \
29                         SNDRV_PCM_FMTBIT_S20_3LE | \
30                         SNDRV_PCM_FMTBIT_S24_LE | \
31                         SNDRV_PCM_FMTBIT_S32_LE)
32
33 static const struct snd_soc_dapm_widget dit_widgets[] = {
34         SND_SOC_DAPM_OUTPUT("OUT"),
35         SND_SOC_DAPM_INPUT("IN"),
36 };
37
38 static const struct snd_soc_dapm_route dit_routes[] = {
39         { "OUT", NULL, "Playback" },
40         { "Capture", NULL, "IN" },
41 };
42
43 static struct snd_soc_codec_driver soc_codec_spdif_dit = {
44         .component_driver = {
45                 .dapm_widgets           = dit_widgets,
46                 .num_dapm_widgets       = ARRAY_SIZE(dit_widgets),
47                 .dapm_routes            = dit_routes,
48                 .num_dapm_routes        = ARRAY_SIZE(dit_routes),
49         },
50 };
51
52 static struct snd_soc_dai_driver dit_stub_dai = {
53         .name           = "dit-hifi",
54         .playback       = {
55                 .stream_name    = "Playback",
56                 .channels_min   = 1,
57                 .channels_max   = 384,
58                 .rates          = STUB_RATES,
59                 .formats        = STUB_FORMATS,
60         },
61         .capture        = {
62                 .stream_name    = "Capture",
63                 .channels_min   = 1,
64                 .channels_max   = 384,
65                 .rates          = STUB_RATES,
66                 .formats        = STUB_FORMATS,
67         },
68 };
69
70 static int spdif_dit_probe(struct platform_device *pdev)
71 {
72         return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_dit,
73                         &dit_stub_dai, 1);
74 }
75
76 static int spdif_dit_remove(struct platform_device *pdev)
77 {
78         snd_soc_unregister_codec(&pdev->dev);
79         return 0;
80 }
81
82 #ifdef CONFIG_OF
83 static const struct of_device_id spdif_dit_dt_ids[] = {
84         { .compatible = "linux,spdif-dit", },
85         { }
86 };
87 MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids);
88 #endif
89
90 static struct platform_driver spdif_dit_driver = {
91         .probe          = spdif_dit_probe,
92         .remove         = spdif_dit_remove,
93         .driver         = {
94                 .name   = DRV_NAME,
95                 .of_match_table = of_match_ptr(spdif_dit_dt_ids),
96         },
97 };
98
99 module_platform_driver(spdif_dit_driver);
100
101 MODULE_AUTHOR("Steve Chen <schen@mvista.com>");
102 MODULE_DESCRIPTION("SPDIF dummy codec driver");
103 MODULE_LICENSE("GPL");
104 MODULE_ALIAS("platform:" DRV_NAME);