On 1/25/23 21:14, Wesley Cheng wrote:
> Create a USB BE component that will register a new USB port to the ASoC USB
> framework. This will handle determination on if the requested audio
> profile is supported by the USB device currently selected.
Can you clarify how? because ...
> +static struct snd_soc_dai_driver q6usb_be_dais[] = {
> + {
> + .playback = {
> + .stream_name = "USB BE RX",
> + .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |
> + SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |
> + SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
> + SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 |
> + SNDRV_PCM_RATE_192000,
> + .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
> + SNDRV_PCM_FMTBIT_U16_LE | SNDRV_PCM_FMTBIT_U16_BE |
> + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE |
> + SNDRV_PCM_FMTBIT_U24_LE | SNDRV_PCM_FMTBIT_U24_BE,
> + .channels_min = 1,
> + .channels_max = 2,
> + .rate_max = 192000,
> + .rate_min = 8000,
> + },
> + .id = USB_RX,
> + .name = "USB_RX_BE",
> + .ops = &q6usb_ops,
> + },
> +};
... here I see a single DAI, so presumably ONE endpoint can be supported?
I didn't see in the rest of the code how a card with multiple endpoint
would be rejected, nor how the capabilities are checked?
