ALSA: emu10k1: Allow to switch hardware sampe rate on EMU

Commit 57e5c63 "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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emupcm.c

@@ -1127,7 +1127,7 @@ static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream)
 	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 @@ static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream)
 		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;