Andrea Bondavalli

Hi, the problem seems to be related to kernel compiled with the THUMB2 instructions set enabled. In you kernel defconfig check if you have the following option enabled. CONFIG_THUMB2_KERNEL=y and disable it in case. This worked for me. BTW: the problem for me started when compiling the kernel using Yocto "rocko" release and it was not present in previous Yocto "pyro" release.

I don’t know the status in linux-sunxi I created the patch by looking at the implementation of the audio playback part in the mainline kernel. I will check and submit it eventually. No, not yet.

Hi all, I created a patch that applies to the mainline kernel v.14-rc6 to enable 32/24bits audio captures for H2+/H3 SoC. Just wanted to share this with the community. Kind regards, Andrea --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -346,11 +346,6 @@ 0x3 << 8, 0x1 << 8); - /* Fill most significant bits with valid data MSB */ - regmap_field_update_bits(scodec->reg_adc_fifoc, - BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE), - BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE)); - return 0; } @@ -490,6 +485,31 @@ BIT(SUN4I_CODEC_ADC_FIFOC_MONO_EN), 0); + /* Set the number of sample bits to either 16 or 24 bits */ + if (hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min == 32) { + regmap_field_update_bits(scodec->reg_adc_fifoc, SUN4I_CODEC_ADC_FIFOC, + BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS), + BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS)); + + + regmap_field_update_bits(scodec->reg_adc_fifoc, SUN4I_CODEC_ADC_FIFOC, + BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE), + 0); + + scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + } else { + regmap_field_update_bits(scodec->reg_adc_fifoc, SUN4I_CODEC_ADC_FIFOC, + BIT(SUN4I_CODEC_ADC_FIFOC_RX_SAMPLE_BITS), + 0); + + /* Fill most significant bits with valid data MSB */ + regmap_field_update_bits(scodec->reg_adc_fifoc, SUN4I_CODEC_ADC_FIFOC, + BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE), + BIT(SUN4I_CODEC_ADC_FIFOC_RX_FIFO_MODE)); + + scodec->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + } + return 0; }