codec 驱动.docx

strict snd_soc_dai_ops rt5621_hifi_ops = {.hw_params = rt5621_pcm_hw_params,.set_fmt = rt5621_set_dai_fmt,.set_sysclk = rt5621_set_dai_sysclk,.set_pll = rt5621_set_dai_pll,#if !USE_DAPM_CONTROL.prepare = rt5621_pcm_hw_prepare,//.shutdown = rt5621_shutdown,#endif strict snd_soc_dai rt5621_dai = { .name = RT5621,.playback = {.stream_name = HiFi Playback,.channels_min = 1,.channels_max = 2,.rates = RT5621_HIFI_RATES,.formats = RT5621_FORMATS,},.capture = {.stream_name = HiFi Capture,.channels_min = 1,.channels_max = 2,.rates = RT5621_HIFI_RATES,.formats = RT5621_FORMATS,},.ops = rt5621_hifi_ops,};DAI 注册RT5621.cstatic int __init rt5621_modinit(void){return snd_soc_register_dai(rt5621_dai);}static void __exit rt5621_exit(void){snd_soc_unregister_dai(rt5621_dai);}二 I2C 注册static int __init smdkc100_audio_init(void){int ret;u32 val;u32 reg;#include mach/map.h#define S3C_VA_AUDSSS3C_ADDR(0/* Audio SubSystem */#include mach/regs-audss.h/* We use I2SCLK for rate generation, so set EPLLout as * the parent of I2SCLK. */ …smdkc100_snd_device = platform_device_alloc(soc-audio, 0);if (!smdkc100_snd_device)return -ENOMEM;platform_set_drvdata(smdkc100_snd_device, smdkc100_snd_devdata);smdkc100_snd_devdata.dev = smdkc100_snd_device-dev; static struct snd_soc_device smdkc100_snd_devdata = {.card = smdkc100,.codec_dev = soc_codec_dev_rt5621,};ret = platform_device_add(smdkc100_snd_device);if (ret)platform_device_put(smdkc100_snd_device);return ret;struct snd_soc_platform s3c_dma_wrapper = {.name= samsung-audio,.pcm_ops= s3c_wrpdma_ops,.pcm_new= s3c_wrpdma_pcm_new,.pcm_free= s3c_wrpdma_pcm_free,};static struct snd_soc_dai_link smdkc100_dai[] = {{.name = RT5621 HiFi,.stream_name = HiFi Playback,.cpu_dai = s3c64xx_i2s_v4_dai[I2S_NUM],.codec_dai = rt5621_dai,.init = smdkc100_rt5621_init,.ops = smdkc100_ops,},{.name = RT5621 HiFi,.stream_name = HiFi Capture,.cpu_dai = s3c64xx_i2s_v4_dai[I2S_NUM],//.codec_dai = wm8580_dai[WM8580_DAI_PAIFRX],@robin.codec_dai = rt5621_dai,.init = smdk