[alsa-devel] [PATCH v3] add native DSD support for XMOS based DACs

[Takashi Iwai]

At Fri,  5 Sep 2014 18:14:46 +0200,
Jurgen Kramer wrote:
> 
> Add quirks for XMOS based DACs for native DSD playback support using the new
> DSD_U32_LE sample format.
> 
> This version adds native DSD support for:
> - iFi Audio micro iDSD/nano iDSD (they use the same prod. id)
> - DIYINHK USB to I2S/DSD converter
> 
> Changes from v2:
> - fix and simplify switch statement
> Changes from v1:
> - use specific product id and alt setting per XMOS based device
> 
> Signed-off-by: Jurgen Kramer <gtmkramer at xs4all.nl>

Applied with a minor coding style fix.  At the next time, please run
scripts/checkpatch.pl before the submission.

Also, don't forget to put maintainers to Cc, and align the subject
line with the other commits for the target code. 


thanks,

Takashi


> ---
>  sound/usb/quirks.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
> index 19a921e..bd5a95e 100644
> --- a/sound/usb/quirks.c
> +++ b/sound/usb/quirks.c
> @@ -1174,5 +1174,21 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
>  		}
>  	}
>  
> +	/* XMOS based USB DACs */
> +	switch(chip->usb_id) {
> +	/* iFi Audio micro/nano iDSD */
> +	case USB_ID(0x20b1, 0x3008):
> +		if (fp->altsetting == 2)
> +			return SNDRV_PCM_FMTBIT_DSD_U32_LE;
> +		break;
> +	/* DIYINHK DSD DXD 384kHz USB to I2S/DSD */
> +	case USB_ID(0x20b1, 0x2009):
> +		if (fp->altsetting == 3)
> +			return SNDRV_PCM_FMTBIT_DSD_U32_LE;
> +		break;
> +	default:
> +		break;
> +	}
> +
>  	return 0;
>  }
> -- 
> 1.9.3
> 
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