apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 1 | /* |
| 2 | * kirkwood-openrd.c |
| 3 | * |
| 4 | * (c) 2010 Arnaud Patard <apatard@mandriva.com> |
Arnaud Patard (Rtp) | 6973789 | 2010-09-09 14:10:33 +0200 | [diff] [blame] | 5 | * (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org> |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License as published by the |
| 9 | * Free Software Foundation; either version 2 of the License, or (at your |
| 10 | * option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/moduleparam.h> |
| 15 | #include <linux/interrupt.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <sound/soc.h> |
| 19 | #include <mach/kirkwood.h> |
| 20 | #include <plat/audio.h> |
| 21 | #include <asm/mach-types.h> |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 22 | #include "../codecs/cs42l51.h" |
| 23 | |
| 24 | static int openrd_client_hw_params(struct snd_pcm_substream *substream, |
| 25 | struct snd_pcm_hw_params *params) |
| 26 | { |
| 27 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 28 | struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| 29 | struct snd_soc_dai *cpu_dai = rtd->cpu_dai; |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 30 | int ret; |
| 31 | unsigned int freq, fmt; |
| 32 | |
| 33 | fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS; |
| 34 | ret = snd_soc_dai_set_fmt(cpu_dai, fmt); |
| 35 | if (ret < 0) |
| 36 | return ret; |
| 37 | |
| 38 | ret = snd_soc_dai_set_fmt(codec_dai, fmt); |
| 39 | if (ret < 0) |
| 40 | return ret; |
| 41 | |
| 42 | switch (params_rate(params)) { |
| 43 | default: |
| 44 | case 44100: |
| 45 | freq = 11289600; |
| 46 | break; |
| 47 | case 48000: |
| 48 | freq = 12288000; |
| 49 | break; |
| 50 | case 96000: |
| 51 | freq = 24576000; |
| 52 | break; |
| 53 | } |
| 54 | |
| 55 | return snd_soc_dai_set_sysclk(codec_dai, 0, freq, SND_SOC_CLOCK_IN); |
| 56 | |
| 57 | } |
| 58 | |
| 59 | static struct snd_soc_ops openrd_client_ops = { |
| 60 | .hw_params = openrd_client_hw_params, |
| 61 | }; |
| 62 | |
| 63 | |
| 64 | static struct snd_soc_dai_link openrd_client_dai[] = { |
| 65 | { |
| 66 | .name = "CS42L51", |
| 67 | .stream_name = "CS42L51 HiFi", |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 68 | .cpu_dai_name = "kirkwood-i2s", |
| 69 | .platform_name = "kirkwood-pcm-audio", |
Arnaud Patard (Rtp) | c88e7b9 | 2010-08-30 16:00:05 +0200 | [diff] [blame] | 70 | .codec_dai_name = "cs42l51-hifi", |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 71 | .codec_name = "cs42l51-codec.0-004a", |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 72 | .ops = &openrd_client_ops, |
| 73 | }, |
| 74 | }; |
| 75 | |
| 76 | |
| 77 | static struct snd_soc_card openrd_client = { |
| 78 | .name = "OpenRD Client", |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 79 | .dai_link = openrd_client_dai, |
| 80 | .num_links = ARRAY_SIZE(openrd_client_dai), |
| 81 | }; |
| 82 | |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 83 | static struct platform_device *openrd_client_snd_device; |
| 84 | |
| 85 | static int __init openrd_client_init(void) |
| 86 | { |
| 87 | int ret; |
| 88 | |
| 89 | if (!machine_is_openrd_client()) |
| 90 | return 0; |
| 91 | |
| 92 | openrd_client_snd_device = platform_device_alloc("soc-audio", -1); |
| 93 | if (!openrd_client_snd_device) |
| 94 | return -ENOMEM; |
| 95 | |
| 96 | platform_set_drvdata(openrd_client_snd_device, |
Liam Girdwood | f0fba2a | 2010-03-17 20:15:21 +0000 | [diff] [blame] | 97 | &openrd_client); |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 98 | |
| 99 | ret = platform_device_add(openrd_client_snd_device); |
| 100 | if (ret) { |
| 101 | printk(KERN_ERR "%s: platform_device_add failed\n", __func__); |
| 102 | platform_device_put(openrd_client_snd_device); |
| 103 | } |
| 104 | |
| 105 | return ret; |
| 106 | } |
| 107 | |
| 108 | static void __exit openrd_client_exit(void) |
| 109 | { |
| 110 | platform_device_unregister(openrd_client_snd_device); |
| 111 | } |
| 112 | |
| 113 | module_init(openrd_client_init); |
| 114 | module_exit(openrd_client_exit); |
| 115 | |
| 116 | /* Module information */ |
Arnaud Patard (Rtp) | 6973789 | 2010-09-09 14:10:33 +0200 | [diff] [blame] | 117 | MODULE_AUTHOR("Arnaud Patard <arnaud.patard@rtp-net.org>"); |
apatard@mandriva.com | 2e8693e | 2010-05-31 13:49:15 +0200 | [diff] [blame] | 118 | MODULE_DESCRIPTION("ALSA SoC OpenRD Client"); |
| 119 | MODULE_LICENSE("GPL"); |
| 120 | MODULE_ALIAS("platform:soc-audio"); |