Re: [alsa-devel] [PATCH] Allow to switch hardware sampe rate on EMU

At Mon, 25 Feb 2013 10:02:45 +0000, Mihail Zenkov wrote:

2013/2/25, Takashi Iwai tiwai@suse.de:

...

Ah, OK, then your patch would make sense. Could you update the patch description to elaborate a bit more about this?

Commit 57e5c63007955838043e34c732d224b2cbbb128f "emu10k1: allow to disable the SRC" force hardware use only one rate (48000 hz). EMU 0404/1010/1616 have support two hardware sampling rates (44100 and 48000 hz). This patch add check if we have EMU 0404/1010/1616 and choose correct sample rate to restrict.

Signed-off-by: Mihail Zenkov mihail.zenkov@gmail.com

OK, applied now. Thanks.

Takashi

--- linux-3.8/sound/pci/emu10k1/emupcm.c +++ linux-3.8-1/sound/pci/emu10k1/emupcm.c @@ -1127,7 +1127,7 @@ struct snd_emu10k1_pcm *epcm; struct snd_emu10k1_pcm_mixer *mix; struct snd_pcm_runtime *runtime = substream->runtime;

•   int i, err;
  

•   int i, err, sample_rate;
  
    epcm = kzalloc(sizeof(*epcm), GFP_KERNEL);
    if (epcm == NULL)
  

@@ -1146,7 +1146,11 @@ kfree(epcm); return err; }

•   err = snd_pcm_hw_rule_noresample(runtime, 48000);
  

•   if (emu->card_capabilities->emu_model &&
  

emu->emu1010.internal_clock == 0)

•           sample_rate = 44100;
  

•   else
  

•           sample_rate = 48000;
  

•   err = snd_pcm_hw_rule_noresample(runtime, sample_rate);
    if (err < 0) {
            kfree(epcm);
            return err;