projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| be461ba8 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> | |
| 37a5ddf4 | 19 | #include <linux/slab.h> |
| be461ba8 C |
20 | #include <sound/soc.h> |
| 21 | #include <sound/pcm.h> | |
| 3a642915 | 22 | #include <sound/initval.h> |
| 1b7c8b35 | 23 | #include <linux/of.h> |
| be461ba8 | 24 | |
| 6ae759e8 | 25 | #define DRV_NAME "spdif-dit" |
| 0a0cf58d | 26 | |
| be461ba8 C |
27 | #define STUB_RATES SNDRV_PCM_RATE_8000_96000 |
| 28 | #define STUB_FORMATS SNDRV_PCM_FMTBIT_S16_LE | |
| 29 | ||
| 3a642915 | 30 | |
| f0fba2ad | 31 | static struct snd_soc_codec_driver soc_codec_spdif_dit; |
| 3a642915 | 32 | |
| f0fba2ad LG |
33 | static struct snd_soc_dai_driver dit_stub_dai = { |
| 34 | .name = "dit-hifi", | |
| be461ba8 C |
35 | .playback = { |
| 36 | .stream_name = "Playback", | |
| 37 | .channels_min = 1, | |
| 38 | .channels_max = 384, | |
| 39 | .rates = STUB_RATES, | |
| 40 | .formats = STUB_FORMATS, | |
| 41 | }, | |
| 42 | }; | |
| 43 | ||
| 44 | static int spdif_dit_probe(struct platform_device *pdev) | |
| 45 | { | |
| f0fba2ad LG |
46 | return snd_soc_register_codec(&pdev->dev, &soc_codec_spdif_dit, |
| 47 | &dit_stub_dai, 1); | |
| be461ba8 C |
48 | } |
| 49 | ||
| 50 | static int spdif_dit_remove(struct platform_device *pdev) | |
| 51 | { | |
| f0fba2ad | 52 | snd_soc_unregister_codec(&pdev->dev); |
| be461ba8 C |
53 | return 0; |
| 54 | } | |
| 55 | ||
| 1b7c8b35 MB |
56 | #ifdef CONFIG_OF |
| 57 | static const struct of_device_id spdif_dit_dt_ids[] = { | |
| 58 | { .compatible = "linux,spdif-dit", }, | |
| 59 | { } | |
| 60 | }; | |
| 61 | MODULE_DEVICE_TABLE(of, spdif_dit_dt_ids); | |
| 62 | #endif | |
| 63 | ||
| be461ba8 C |
64 | static struct platform_driver spdif_dit_driver = { |
| 65 | .probe = spdif_dit_probe, | |
| 66 | .remove = spdif_dit_remove, | |
| 67 | .driver = { | |
| 6ae759e8 | 68 | .name = DRV_NAME, |
| be461ba8 | 69 | .owner = THIS_MODULE, |
| 1b7c8b35 | 70 | .of_match_table = of_match_ptr(spdif_dit_dt_ids), |
| be461ba8 C |
71 | }, |
| 72 | }; | |
| 73 | ||
| 5bbcc3c0 | 74 | module_platform_driver(spdif_dit_driver); |
| be461ba8 | 75 | |
| 6ae759e8 SW |
76 | MODULE_AUTHOR("Steve Chen <schen@mvista.com>"); |
| 77 | MODULE_DESCRIPTION("SPDIF dummy codec driver"); | |
| 78 | MODULE_LICENSE("GPL"); | |
| 79 | MODULE_ALIAS("platform:" DRV_NAME); |