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ALSA: ice1724 - pro-rate-locking makes sense only for internal clock mode

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* pro-rate-locking applies to internal clock mode only
* required rate and current rate are compared for internal clock mode only

Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Pavel Hofman 2009-09-16 22:25:39 +02:00 committed by Takashi Iwai
parent 494703062b
commit 6796d5a05f
1 changed files with 16 additions and 7 deletions
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23
sound/pci/ice1712/ice1724.c
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@ -118,9 +118,12 @@ static inline int stdclock_is_spdif_master(struct snd_ice1712 *ice)
return (inb(ICEMT1724(ice, RATE)) & VT1724_SPDIF_MASTER) ? 1 : 0;
}
/*
* locking rate makes sense only for internal clock mode
*/
static inline int is_pro_rate_locked(struct snd_ice1712 *ice)
{
return ice->is_spdif_master(ice) || PRO_RATE_LOCKED;
return (!ice->is_spdif_master(ice)) && PRO_RATE_LOCKED;
}
/*
@ -668,16 +671,22 @@ static int snd_vt1724_set_pro_rate(struct snd_ice1712 *ice, unsigned int rate,
return -EBUSY;
}
if (!force && is_pro_rate_locked(ice)) {
/* comparing required and current rate - makes sense for
* internal clock only */
spin_unlock_irqrestore(&ice->reg_lock, flags);
return (rate == ice->cur_rate) ? 0 : -EBUSY;
}
old_rate = ice->get_rate(ice);
if (force || (old_rate != rate))
ice->set_rate(ice, rate);
else if (rate == ice->cur_rate) {
spin_unlock_irqrestore(&ice->reg_lock, flags);
return 0;
if (force || !ice->is_spdif_master(ice)) {
/* force means the rate was switched by ucontrol, otherwise
* setting clock rate for internal clock mode */
old_rate = ice->get_rate(ice);
if (force || (old_rate != rate))
ice->set_rate(ice, rate);
else if (rate == ice->cur_rate) {
spin_unlock_irqrestore(&ice->reg_lock, flags);
return 0;
}
}
ice->cur_rate = rate;