projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 91157888 EB |
1 | /* |
| 2 | * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode | |
| 3 | * | |
| 4 | * Copyright 2010 Eric Bénard, Eukréa Electromatique <eric@eukrea.com> | |
| 5 | * | |
| 6 | * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c | |
| 7 | * which is Copyright 2009 Simtec Electronics | |
| 8 | * and on sound/soc/imx/phycore-ac97.c which is | |
| 9 | * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de> | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify it | |
| 12 | * under the terms of the GNU General Public License as published by the | |
| 13 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 14 | * option) any later version. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/module.h> | |
| 19 | #include <linux/moduleparam.h> | |
| 20 | #include <linux/device.h> | |
| 21 | #include <linux/i2c.h> | |
| 22 | #include <sound/core.h> | |
| 23 | #include <sound/pcm.h> | |
| 24 | #include <sound/soc.h> | |
| 25 | #include <sound/soc-dapm.h> | |
| 26 | #include <asm/mach-types.h> | |
| 27 | ||
| 28 | #include "../codecs/tlv320aic23.h" | |
| 29 | #include "imx-ssi.h" | |
| 30 | ||
| 31 | #define CODEC_CLOCK 12000000 | |
| 32 | ||
| 33 | static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, | |
| 34 | struct snd_pcm_hw_params *params) | |
| 35 | { | |
| 36 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
| 37 | struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; | |
| 38 | struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; | |
| 39 | int ret; | |
| 40 | ||
| 41 | ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | | |
| 42 | SND_SOC_DAIFMT_NB_NF | | |
| 43 | SND_SOC_DAIFMT_CBM_CFM); | |
| 44 | if (ret) { | |
| 45 | pr_err("%s: failed set cpu dai format\n", __func__); | |
| 46 | return ret; | |
| 47 | } | |
| 48 | ||
| 49 | ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | | |
| 50 | SND_SOC_DAIFMT_NB_NF | | |
| 51 | SND_SOC_DAIFMT_CBM_CFM); | |
| 52 | if (ret) { | |
| 53 | pr_err("%s: failed set codec dai format\n", __func__); | |
| 54 | return ret; | |
| 55 | } | |
| 56 | ||
| 57 | ret = snd_soc_dai_set_sysclk(codec_dai, 0, | |
| 58 | CODEC_CLOCK, SND_SOC_CLOCK_OUT); | |
| 59 | if (ret) { | |
| 60 | pr_err("%s: failed setting codec sysclk\n", __func__); | |
| 61 | return ret; | |
| 62 | } | |
| 63 | ||
| 64 | ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, | |
| 65 | SND_SOC_CLOCK_IN); | |
| 66 | if (ret) { | |
| 67 | pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n"); | |
| 68 | return ret; | |
| 69 | } | |
| 70 | ||
| 71 | return 0; | |
| 72 | } | |
| 73 | ||
| 74 | static struct snd_soc_ops eukrea_tlv320_snd_ops = { | |
| 75 | .hw_params = eukrea_tlv320_hw_params, | |
| 76 | }; | |
| 77 | ||
| 78 | static struct snd_soc_dai_link eukrea_tlv320_dai = { | |
| 79 | .name = "tlv320aic23", | |
| 80 | .stream_name = "TLV320AIC23", | |
| 81 | .codec_dai = &tlv320aic23_dai, | |
| 82 | .ops = &eukrea_tlv320_snd_ops, | |
| 83 | }; | |
| 84 | ||
| 85 | static struct snd_soc_card eukrea_tlv320 = { | |
| 86 | .name = "cpuimx-audio", | |
| 87 | .platform = &imx_soc_platform, | |
| 88 | .dai_link = &eukrea_tlv320_dai, | |
| 89 | .num_links = 1, | |
| 90 | }; | |
| 91 | ||
| 92 | static struct snd_soc_device eukrea_tlv320_snd_devdata = { | |
| 93 | .card = &eukrea_tlv320, | |
| 94 | .codec_dev = &soc_codec_dev_tlv320aic23, | |
| 95 | }; | |
| 96 | ||
| 97 | static struct platform_device *eukrea_tlv320_snd_device; | |
| 98 | ||
| 99 | static int __init eukrea_tlv320_init(void) | |
| 100 | { | |
| 101 | int ret; | |
| 102 | ||
| 103 | if (!machine_is_eukrea_cpuimx27()) | |
| 104 | /* return happy. We might run on a totally different machine */ | |
| 105 | return 0; | |
| 106 | ||
| 107 | eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1); | |
| 108 | if (!eukrea_tlv320_snd_device) | |
| 109 | return -ENOMEM; | |
| 110 | ||
| 111 | eukrea_tlv320_dai.cpu_dai = &imx_ssi_pcm_dai[0]; | |
| 112 | ||
| 113 | platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320_snd_devdata); | |
| 114 | eukrea_tlv320_snd_devdata.dev = &eukrea_tlv320_snd_device->dev; | |
| 115 | ret = platform_device_add(eukrea_tlv320_snd_device); | |
| 116 | ||
| 117 | if (ret) { | |
| 118 | printk(KERN_ERR "ASoC: Platform device allocation failed\n"); | |
| 119 | platform_device_put(eukrea_tlv320_snd_device); | |
| 120 | } | |
| 121 | ||
| 122 | return ret; | |
| 123 | } | |
| 124 | ||
| 125 | static void __exit eukrea_tlv320_exit(void) | |
| 126 | { | |
| 127 | platform_device_unregister(eukrea_tlv320_snd_device); | |
| 128 | } | |
| 129 | ||
| 130 | module_init(eukrea_tlv320_init); | |
| 131 | module_exit(eukrea_tlv320_exit); | |
| 132 | ||
| 133 | MODULE_AUTHOR("Eric Bénard <eric@eukrea.com>"); | |
| 134 | MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); | |
| 135 | MODULE_LICENSE("GPL"); |