Dear members,

Please, let me explain my setup: I'm using DM3730 soc https://www.isee.biz/products/igep-processor-boards/igepv2-dm3730 with McBSP3 and I2C2 to drive audio and control to the TLV320AIC3106 codec (which it is acting as master). Currently I'm using 2.6.37 kernel version http://git.isee.biz/?p=pub/scm/linux-omap-2.6.git;a=tree.

For reference I've used BBB Audio Cape http://elinux.org/CircuitCo:Audio_Cape_RevA as base design.

Right now I've got playback working as expected (codec generates BCLK and WCLK). Whenever I try to record using "arecor,d -f cd -Dhw:1,0" it's only showing wave header but no audio is captured at all. I can not see any clocks running on the codec.

How can I debug or go further with this issue? Any thoughts will be appreciated!!

BTW this is the init code:

static int TLV320AIC3106_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->codec_dai; struct snd_soc_dai *cpu_dai = rtd->cpu_dai; int ret;

printk(KERN_ERR "+tlv_hw_params(%p,%p) %p, %p, %p\n", substream, params, rtd, codec_dai, cpu_dai);

// Set codec DAI configuration ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM); if (ret < 0) { printk(KERN_ERR "tlv_hw_params: can't set codec DAI configuration\n"); return ret; }

// Set cpu DAI configuration ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);

if (ret < 0) { printk(KERN_ERR "tlv_hw_params: can't set cpu DAI configuration\n"); return ret; }

// Set the codec system clock for DAC and ADC ret = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000, SND_SOC_CLOCK_IN); if (ret < 0) { printk(KERN_ERR "tlv_hw_params: can't set codec system clock\n"); return ret; }

printk(KERN_ERR "-tlv_hw_params\n"); return 0; }

BR, Sergio