| Mark Brown | 9b8dc66 | 2011-04-12 17:24:39 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Speyside audio support |
| 3 | * |
| 4 | * Copyright 2011 Wolfson Microelectronics |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <sound/soc.h> |
| 13 | #include <sound/soc-dapm.h> |
| 14 | |
| 15 | #include "../codecs/wm8915.h" |
| 16 | |
| 17 | static int speyside_hw_params(struct snd_pcm_substream *substream, |
| 18 | struct snd_pcm_hw_params *params) |
| 19 | { |
| 20 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 21 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
| 22 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 23 | int ret; |
| 24 | |
| 25 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
| 26 | | SND_SOC_DAIFMT_NB_NF |
| 27 | | SND_SOC_DAIFMT_CBM_CFM); |
| 28 | if (ret < 0) |
| 29 | return ret; |
| 30 | |
| 31 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
| 32 | | SND_SOC_DAIFMT_NB_NF |
| 33 | | SND_SOC_DAIFMT_CBM_CFM); |
| 34 | if (ret < 0) |
| 35 | return ret; |
| 36 | |
| 37 | ret = snd_soc_dai_set_pll(codec_dai, 0, WM8915_FLL_MCLK1, |
| 38 | 32768, 256 * 48000); |
| 39 | if (ret < 0) |
| 40 | return ret; |
| 41 | |
| 42 | ret = snd_soc_dai_set_sysclk(codec_dai, WM8915_SYSCLK_FLL, |
| 43 | 256 * 48000, SND_SOC_CLOCK_IN); |
| 44 | if (ret < 0) |
| 45 | return ret; |
| 46 | |
| 47 | return 0; |
| 48 | } |
| 49 | |
| 50 | static struct snd_soc_ops speyside_ops = { |
| 51 | .hw_params = speyside_hw_params, |
| 52 | }; |
| 53 | |
| 54 | static struct snd_soc_dai_link speyside_dai[] = { |
| 55 | { |
| 56 | .name = "CPU", |
| 57 | .stream_name = "CPU", |
| 58 | .cpu_dai_name = "samsung-i2s.0", |
| 59 | .codec_dai_name = "wm8915-aif1", |
| 60 | .platform_name = "samsung-audio", |
| 61 | .codec_name = "wm8915.1-001a", |
| 62 | .ops = &speyside_ops, |
| 63 | }, |
| 64 | }; |
| 65 | |
| 66 | static struct snd_soc_card speyside = { |
| 67 | .name = "Speyside", |
| 68 | .dai_link = speyside_dai, |
| 69 | .num_links = ARRAY_SIZE(speyside_dai), |
| 70 | }; |
| 71 | |
| 72 | static __devinit int speyside_probe(struct platform_device *pdev) |
| 73 | { |
| 74 | struct snd_soc_card *card = &speyside; |
| 75 | int ret; |
| 76 | |
| 77 | card->dev = &pdev->dev; |
| 78 | |
| 79 | ret = snd_soc_register_card(card); |
| 80 | if (ret) { |
| 81 | dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", |
| 82 | ret); |
| 83 | return ret; |
| 84 | } |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | static int __devexit speyside_remove(struct platform_device *pdev) |
| 90 | { |
| 91 | struct snd_soc_card *card = platform_get_drvdata(pdev); |
| 92 | |
| 93 | snd_soc_unregister_card(card); |
| 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | static struct platform_driver speyside_driver = { |
| 99 | .driver = { |
| 100 | .name = "speyside", |
| 101 | .owner = THIS_MODULE, |
| 102 | .pm = &snd_soc_pm_ops, |
| 103 | }, |
| 104 | .probe = speyside_probe, |
| 105 | .remove = __devexit_p(speyside_remove), |
| 106 | }; |
| 107 | |
| 108 | static int __init speyside_audio_init(void) |
| 109 | { |
| 110 | return platform_driver_register(&speyside_driver); |
| 111 | } |
| 112 | module_init(speyside_audio_init); |
| 113 | |
| 114 | static void __exit speyside_audio_exit(void) |
| 115 | { |
| 116 | platform_driver_unregister(&speyside_driver); |
| 117 | } |
| 118 | module_exit(speyside_audio_exit); |
| 119 | |
| 120 | MODULE_DESCRIPTION("Speyside audio support"); |
| 121 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 122 | MODULE_LICENSE("GPL"); |
| 123 | MODULE_ALIAS("platform:speyside"); |