/* * DB1200 ASoC audio fabric support code. * * (c) 2008-9 Manuel Lauss <manuel.lauss@gmail.com> * */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> #include <sound/soc-dapm.h> #include <asm/mach-au1x00/au1000.h> #include <asm/mach-au1x00/au1xxx_psc.h> #include <asm/mach-au1x00/au1xxx_dbdma.h> #include <asm/mach-db1x00/bcsr.h> #include "../codecs/ac97.h" #include "../codecs/wm8731.h" #include "psc.h" /*------------------------- AC97 PART ---------------------------*/ static struct snd_soc_dai_link db1200_ac97_dai = { .name = "AC97", .stream_name = "AC97 HiFi", .cpu_dai = &au1xpsc_ac97_dai, .codec_dai = &ac97_dai, }; static struct snd_soc_card db1200_ac97_machine = { .name = "DB1200_AC97", .dai_link = &db1200_ac97_dai, .num_links = 1, .platform = &au1xpsc_soc_platform, }; static struct snd_soc_device db1200_ac97_devdata = { .card = &db1200_ac97_machine, .codec_dev = &soc_codec_dev_ac97, }; /*------------------------- I2S PART ---------------------------*/ static int db1200_i2s_startup(struct snd_pcm_substream *substream) { 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; /* WM8731 has its own 12MHz crystal */ snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK, 12000000, SND_SOC_CLOCK_IN); /* codec is bitclock and lrclk master */ ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) goto out; ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) goto out; ret = 0; out: return ret; } static struct snd_soc_ops db1200_i2s_wm8731_ops = { .startup = db1200_i2s_startup, }; static struct snd_soc_dai_link db1200_i2s_dai = { .name = "WM8731", .stream_name = "WM8731 PCM", .cpu_dai = &au1xpsc_i2s_dai, .codec_dai = &wm8731_dai, .ops = &db1200_i2s_wm8731_ops, }; static struct snd_soc_card db1200_i2s_machine = { .name = "DB1200_I2S", .dai_link = &db1200_i2s_dai, .num_links = 1, .platform = &au1xpsc_soc_platform, }; static struct snd_soc_device db1200_i2s_devdata = { .card = &db1200_i2s_machine, .codec_dev = &soc_codec_dev_wm8731, }; /*------------------------- COMMON PART ---------------------------*/ static struct platform_device *db1200_asoc_dev; static int __init db1200_audio_load(void) { int ret; ret = -ENOMEM; db1200_asoc_dev = platform_device_alloc("soc-audio", -1); if (!db1200_asoc_dev) goto out; /* DB1200 board setup set PSC1MUX to preferred audio device */ if (bcsr_read(BCSR_RESETS) & BCSR_RESETS_PSC1MUX) platform_set_drvdata(db1200_asoc_dev, &db1200_i2s_devdata); else platform_set_drvdata(db1200_asoc_dev, &db1200_ac97_devdata); db1200_ac97_devdata.dev = &db1200_asoc_dev->dev; db1200_i2s_devdata.dev = &db1200_asoc_dev->dev; ret = platform_device_add(db1200_asoc_dev); if (ret) { platform_device_put(db1200_asoc_dev); db1200_asoc_dev = NULL; } out: return ret; } static void __exit db1200_audio_unload(void) { platform_device_unregister(db1200_asoc_dev); } module_init(db1200_audio_load); module_exit(db1200_audio_unload); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("DB1200 ASoC audio support"); MODULE_AUTHOR("Manuel Lauss");