1 files changed, 18 insertions, 8 deletions

diff --git a/sound/pci/emu10k1/timer.c b/sound/pci/emu10k1/timer.c
index 2435d3ba68f7..f3c78adf3248 100644
--- a/sound/pci/emu10k1/timer.c
+++ b/sound/pci/emu10k1/timer.c
@@ -18,46 +18,56 @@
 static int snd_emu10k1_timer_start(struct snd_timer *timer)
 {
 	struct snd_emu10k1 *emu;
-	unsigned long flags;
 	unsigned int delay;
 
 	emu = snd_timer_chip(timer);
 	delay = timer->sticks - 1;
 	if (delay < 5 ) /* minimum time is 5 ticks */
 		delay = 5;
-	spin_lock_irqsave(&emu->reg_lock, flags);
 	snd_emu10k1_intr_enable(emu, INTE_INTERVALTIMERENB);
 	outw(delay & TIMER_RATE_MASK, emu->port + TIMER);
-	spin_unlock_irqrestore(&emu->reg_lock, flags);
 	return 0;
 }
 
 static int snd_emu10k1_timer_stop(struct snd_timer *timer)
 {
 	struct snd_emu10k1 *emu;
-	unsigned long flags;
 
 	emu = snd_timer_chip(timer);
-	spin_lock_irqsave(&emu->reg_lock, flags);
 	snd_emu10k1_intr_disable(emu, INTE_INTERVALTIMERENB);
-	spin_unlock_irqrestore(&emu->reg_lock, flags);
 	return 0;
 }
 
+static unsigned long snd_emu10k1_timer_c_resolution(struct snd_timer *timer)
+{
+	struct snd_emu10k1 *emu = snd_timer_chip(timer);
+
+	if (emu->card_capabilities->emu_model &&
+	    emu->emu1010.word_clock == 44100)
+		return 22676;  // 1 sample @ 44.1 kHz = 22.675736...us
+	else
+		return 20833;  // 1 sample @ 48 kHz = 20.833...us
+}
+
 static int snd_emu10k1_timer_precise_resolution(struct snd_timer *timer,
 					       unsigned long *num, unsigned long *den)
 {
+	struct snd_emu10k1 *emu = snd_timer_chip(timer);
+
 	*num = 1;
-	*den = 48000;
+	if (emu->card_capabilities->emu_model)
+		*den = emu->emu1010.word_clock;
+	else
+		*den = 48000;
 	return 0;
 }
 
 static const struct snd_timer_hardware snd_emu10k1_timer_hw = {
 	.flags = SNDRV_TIMER_HW_AUTO,
-	.resolution = 20833, /* 1 sample @ 48KHZ = 20.833...us */
 	.ticks = 1024,
 	.start = snd_emu10k1_timer_start,
 	.stop = snd_emu10k1_timer_stop,
+	.c_resolution = snd_emu10k1_timer_c_resolution,
 	.precise_resolution = snd_emu10k1_timer_precise_resolution,
 };