On 04/14/2012 10:18 PM, jem_7@xxxxxx wrote:
> Want to give a short feedback for other user waiting for a solution.
>
> Thanks to Daniel the problem is solved now by the following patch:
Yes, but Joachim wanted to contact the vendor and ask for a firmware
upgrade to fix this on the device side. Only if they refuse to provide a
fix for that, we can merge this hack.
Thanks,
Daniel
>
> diff --git a/sound/usb/clock.c b/sound/usb/clock.c
> index 379baad..b05111d 100644
> --- a/sound/usb/clock.c
> +++ b/sound/usb/clock.c
> @@ -255,6 +255,13 @@ static int set_sample_rate_v2(struct snd_usb_audio
> *chip, int iface,
> int err, crate;
> int clock = snd_usb_clock_find_source(chip, fmt->clock);
> + /*
> + * Fractal Audio Systems AXE-FX II does not respond to sample rate
> + * set requests. The only valid rate is 48000.
> + */
> + if (chip->usb_id == USB_ID(0x2466, 0x8003) && rate == 48000)
> + return 0;
> +
> if (clock < 0)
> return clock;
> diff --git a/sound/usb/format.c b/sound/usb/format.c
> index ddfef57..7a9e82a 100644
> --- a/sound/usb/format.c
> +++ b/sound/usb/format.c
> @@ -279,6 +279,20 @@ static int parse_audio_format_rates_v2(struct
> snd_usb_audio *chip,
> int nr_triplets, data_size, ret = 0;
> int clock = snd_usb_clock_find_source(chip, fp->clock);
> + /*
> + * Fractal Audio Systems AXE-FX II does not respond to sample rate
> + * query requests. The only valid rate is 48000.
> + */
> + if (chip->usb_id == USB_ID(0x2466, 0x8003)) {
> + fp->nr_rates = 1;
> + fp->rate_min = 48000;
> + fp->rate_max = 48000;
> + fp->rates = SNDRV_PCM_RATE_48000;
> + fp->rate_table = kmalloc(sizeof(int), GFP_KERNEL);
> + fp->rate_table[0] = 48000;
> + return 0;
> + }
> +
> if (clock < 0) {
> snd_printk(KERN_ERR "%s(): unable to find clock source (clock
> %d)\n",
> __func__, clock);
>
> In addition to the previously posted patch it was necessary to modify
> clock.c also, because the Axe-FX II currently neither responds to get
> sample rate requests nor set sample rate requests.
>
> Many thanks again to Daniel.
>
> Best regards
>
> Joachim
>
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