projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2e8693ee | 1 | /* |
| 2 | * kirkwood-openrd.c | |
| 3 | * | |
| 4 | * (c) 2010 Arnaud Patard <apatard@mandriva.com> | |
| 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 <linux/module.h> | |
| 13 | #include <linux/moduleparam.h> | |
| 14 | #include <linux/interrupt.h> | |
| 15 | #include <linux/platform_device.h> | |
| 16 | #include <linux/slab.h> | |
| 17 | #include <sound/soc.h> | |
| 18 | #include <mach/kirkwood.h> | |
| 19 | #include <plat/audio.h> | |
| 20 | #include <asm/mach-types.h> | |
| 2e8693ee | 21 | #include "../codecs/cs42l51.h" |
| 22 | ||
| 23 | static int openrd_client_hw_params(struct snd_pcm_substream *substream, | |
| 24 | struct snd_pcm_hw_params *params) | |
| 25 | { | |
| 26 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
| f0fba2ad LG |
27 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 28 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; | |
| 2e8693ee | 29 | int ret; |
| 30 | unsigned int freq, fmt; | |
| 31 | ||
| 32 | fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS; | |
| 33 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); | |
| 34 | if (ret < 0) | |
| 35 | return ret; | |
| 36 | ||
| 37 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); | |
| 38 | if (ret < 0) | |
| 39 | return ret; | |
| 40 | ||
| 41 | switch (params_rate(params)) { | |
| 42 | default: | |
| 43 | case 44100: | |
| 44 | freq = 11289600; | |
| 45 | break; | |
| 46 | case 48000: | |
| 47 | freq = 12288000; | |
| 48 | break; | |
| 49 | case 96000: | |
| 50 | freq = 24576000; | |
| 51 | break; | |
| 52 | } | |
| 53 | ||
| 54 | return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN); | |
| 55 | ||
| 56 | } | |
| 57 | ||
| 58 | static struct snd_soc_ops openrd_client_ops = { | |
| 59 | .hw_params = openrd_client_hw_params, | |
| 60 | }; | |
| 61 | ||
| 62 | ||
| 63 | static struct snd_soc_dai_link openrd_client_dai[] = { | |
| 64 | { | |
| 65 | .name = "CS42L51", | |
| 66 | .stream_name = "CS42L51 HiFi", | |
| f0fba2ad LG |
67 | .cpu_dai_name = "kirkwood-i2s", |
| 68 | .platform_name = "kirkwood-pcm-audio", | |
| 69 | .codec_dai_name = "cs42l51_hifi", | |
| 70 | .codec_name = "cs42l51-codec.0-004a", | |
| 2e8693ee | 71 | .ops = &openrd_client_ops, |
| 72 | }, | |
| 73 | }; | |
| 74 | ||
| 75 | ||
| 76 | static struct snd_soc_card openrd_client = { | |
| 77 | .name = "OpenRD Client", | |
| 2e8693ee | 78 | .dai_link = openrd_client_dai, |
| 79 | .num_links = ARRAY_SIZE(openrd_client_dai), | |
| 80 | }; | |
| 81 | ||
| 2e8693ee | 82 | static struct platform_device *openrd_client_snd_device; |
| 83 | ||
| 84 | static int __init openrd_client_init(void) | |
| 85 | { | |
| 86 | int ret; | |
| 87 | ||
| 88 | if (!machine_is_openrd_client()) | |
| 89 | return 0; | |
| 90 | ||
| 91 | openrd_client_snd_device = platform_device_alloc("soc-audio", -1); | |
| 92 | if (!openrd_client_snd_device) | |
| 93 | return -ENOMEM; | |
| 94 | ||
| 95 | platform_set_drvdata(openrd_client_snd_device, | |
| f0fba2ad | 96 | &openrd_client); |
| 2e8693ee | 97 | |
| 98 | ret = platform_device_add(openrd_client_snd_device); | |
| 99 | if (ret) { | |
| 100 | printk(KERN_ERR "%s: platform_device_add failed\n", __func__); | |
| 101 | platform_device_put(openrd_client_snd_device); | |
| 102 | } | |
| 103 | ||
| 104 | return ret; | |
| 105 | } | |
| 106 | ||
| 107 | static void __exit openrd_client_exit(void) | |
| 108 | { | |
| 109 | platform_device_unregister(openrd_client_snd_device); | |
| 110 | } | |
| 111 | ||
| 112 | module_init(openrd_client_init); | |
| 113 | module_exit(openrd_client_exit); | |
| 114 | ||
| 115 | /* Module information */ | |
| 116 | MODULE_AUTHOR("Arnaud Patard <apatard@mandriva.com>"); | |
| 117 | MODULE_DESCRIPTION("ALSA SoC OpenRD Client"); | |
| 118 | MODULE_LICENSE("GPL"); | |
| 119 | MODULE_ALIAS("platform:soc-audio"); |