/* * eukrea-tlv320.c -- SoC audio for eukrea_cpuimxXX in I2S mode * * Copyright 2010 Eric Bénard, Eukréa Electromatique * * based on sound/soc/s3c24xx/s3c24xx_simtec_tlv320aic23.c * which is Copyright 2009 Simtec Electronics * and on sound/soc/imx/phycore-ac97.c which is * Copyright 2009 Sascha Hauer, Pengutronix * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include #include #include #include #include #include #include #include #include #include "../codecs/tlv320aic23.h" #include "imx-ssi.h" #define CODEC_CLOCK 12000000 static int eukrea_tlv320_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *codec_dai = rtd->dai->codec_dai; struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai; int ret; ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret) { pr_err("%s: failed set cpu dai format\n", __func__); return ret; } ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret) { pr_err("%s: failed set codec dai format\n", __func__); return ret; } ret = snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_OUT); if (ret) { pr_err("%s: failed setting codec sysclk\n", __func__); return ret; } snd_soc_dai_set_tdm_slot(cpu_dai, 0xffffffc, 0xffffffc, 2, 0); ret = snd_soc_dai_set_sysclk(cpu_dai, IMX_SSP_SYS_CLK, 0, SND_SOC_CLOCK_IN); if (ret) { pr_err("can't set CPU system clock IMX_SSP_SYS_CLK\n"); return ret; } return 0; } static struct snd_soc_ops eukrea_tlv320_snd_ops = { .hw_params = eukrea_tlv320_hw_params, }; static struct snd_soc_dai_link eukrea_tlv320_dai = { .name = "tlv320aic23", .stream_name = "TLV320AIC23", .codec_dai = &tlv320aic23_dai, .ops = &eukrea_tlv320_snd_ops, }; static struct snd_soc_card eukrea_tlv320 = { .name = "cpuimx-audio", .platform = &imx_soc_platform, .dai_link = &eukrea_tlv320_dai, .num_links = 1, }; static struct snd_soc_device eukrea_tlv320_snd_devdata = { .card = &eukrea_tlv320, .codec_dev = &soc_codec_dev_tlv320aic23, }; static struct platform_device *eukrea_tlv320_snd_device; static int __init eukrea_tlv320_init(void) { int ret; if (!machine_is_eukrea_cpuimx27() && !machine_is_eukrea_cpuimx25sd()) /* return happy. We might run on a totally different machine */ return 0; eukrea_tlv320_snd_device = platform_device_alloc("soc-audio", -1); if (!eukrea_tlv320_snd_device) return -ENOMEM; eukrea_tlv320_dai.cpu_dai = &imx_ssi_pcm_dai[0]; platform_set_drvdata(eukrea_tlv320_snd_device, &eukrea_tlv320_snd_devdata); eukrea_tlv320_snd_devdata.dev = &eukrea_tlv320_snd_device->dev; ret = platform_device_add(eukrea_tlv320_snd_device); if (ret) { printk(KERN_ERR "ASoC: Platform device allocation failed\n"); platform_device_put(eukrea_tlv320_snd_device); } return ret; } static void __exit eukrea_tlv320_exit(void) { platform_device_unregister(eukrea_tlv320_snd_device); } module_init(eukrea_tlv320_init); module_exit(eukrea_tlv320_exit); MODULE_AUTHOR("Eric Bénard "); MODULE_DESCRIPTION("CPUIMX ALSA SoC driver"); MODULE_LICENSE("GPL");