ALSA CVS update - Takashi Iwai <tiwai@suse.de>

YMFPCI driver
Clemens Ladisch <clemens@ladisch.de>:

- added the support for the timer on ymfpci chips.

include/sound/ymfpci.h

@@ -25,6 +25,7 @@
 #include "pcm.h"
 #include "rawmidi.h"
 #include "ac97_codec.h"
+#include "timer.h"
 #include <linux/gameport.h>
 
 #ifndef PCI_VENDOR_ID_YAMAHA
@@ -347,6 +348,7 @@ struct _snd_ymfpci {
 
 	ac97_t *ac97;
 	snd_rawmidi_t *rawmidi;
+	snd_timer_t *timer;
 
 	struct pci_dev *pci;
 	snd_card_t *card;
@@ -387,6 +389,7 @@ int snd_ymfpci_pcm2(ymfpci_t *chip, int device, snd_pcm_t **rpcm);
 int snd_ymfpci_pcm_spdif(ymfpci_t *chip, int device, snd_pcm_t **rpcm);
 int snd_ymfpci_pcm_4ch(ymfpci_t *chip, int device, snd_pcm_t **rpcm);
 int snd_ymfpci_mixer(ymfpci_t *chip, int rear_switch);
+int snd_ymfpci_timer(ymfpci_t *chip, int device);
 
 int snd_ymfpci_voice_alloc(ymfpci_t *chip, ymfpci_voice_type_t type, int pair, ymfpci_voice_t **rvoice);
 int snd_ymfpci_voice_free(ymfpci_t *chip, ymfpci_voice_t *pvoice);

sound/pci/ymfpci/ymfpci.c

@@ -267,6 +267,10 @@ static int __devinit snd_card_ymfpci_probe(struct pci_dev *pci,
 		snd_card_free(card);
 		return err;
 	}
+	if ((err = snd_ymfpci_timer(chip, 0)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
 	if (chip->mpu_res) {
 		if ((err = snd_mpu401_uart_new(card, 0, MPU401_HW_YMFPCI,
 					       mpu_port[dev], 1,

sound/pci/ymfpci/ymfpci_main.c

@@ -779,7 +779,8 @@ static irqreturn_t snd_ymfpci_interrupt(int irq, void *dev_id, struct pt_regs *r
 
 	status = snd_ymfpci_readw(chip, YDSXGR_INTFLAG);
 	if (status & 1) {
-		/* timer handler */
+		if (chip->timer)
+			snd_timer_interrupt(chip->timer, chip->timer->sticks);
 	}
 	snd_ymfpci_writew(chip, YDSXGR_INTFLAG, status);
 
@@ -1702,6 +1703,77 @@ int __devinit snd_ymfpci_mixer(ymfpci_t *chip, int rear_switch)
 }
 
 
+/*
+ * timer
+ */
+
+static int snd_ymfpci_timer_start(snd_timer_t *timer)
+{
+	ymfpci_t *chip;
+	unsigned long flags;
+	unsigned int count;
+
+	chip = snd_timer_chip(timer);
+	count = timer->sticks - 1;
+	if (count == 0) /* minimum time is 20.8 us */
+		count = 1;
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ymfpci_writew(chip, YDSXGR_TIMERCOUNT, count);
+	snd_ymfpci_writeb(chip, YDSXGR_TIMERCTRL, 0x03);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_ymfpci_timer_stop(snd_timer_t *timer)
+{
+	ymfpci_t *chip;
+	unsigned long flags;
+
+	chip = snd_timer_chip(timer);
+	spin_lock_irqsave(&chip->reg_lock, flags);
+	snd_ymfpci_writeb(chip, YDSXGR_TIMERCTRL, 0x00);
+	spin_unlock_irqrestore(&chip->reg_lock, flags);
+	return 0;
+}
+
+static int snd_ymfpci_timer_precise_resolution(snd_timer_t *timer,
+					       unsigned long *num, unsigned long *den)
+{
+	*num = 1;
+	*den = 96000;
+	return 0;
+}
+
+static struct _snd_timer_hardware snd_ymfpci_timer_hw = {
+	.flags = SNDRV_TIMER_HW_AUTO,
+	.resolution = 10417, /* 1/2fs = 10.41666...us */
+	.ticks = 65536,
+	.start = snd_ymfpci_timer_start,
+	.stop = snd_ymfpci_timer_stop,
+	.precise_resolution = snd_ymfpci_timer_precise_resolution,
+};
+
+int __devinit snd_ymfpci_timer(ymfpci_t *chip, int device)
+{
+	snd_timer_t *timer = NULL;
+	snd_timer_id_t tid;
+	int err;
+
+	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
+	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
+	tid.card = chip->card->number;
+	tid.device = device;
+	tid.subdevice = 0;
+	if ((err = snd_timer_new(chip->card, "YMFPCI", &tid, &timer)) >= 0) {
+		strcpy(timer->name, "YMFPCI timer");
+		timer->private_data = chip;
+		timer->hw = snd_ymfpci_timer_hw;
+	}
+	chip->timer = timer;
+	return err;
+}
+
+
 /*
  *  proc interface
  */