[linux-block.git] / sound / drivers / opl3 / opl3_lib.c

/*
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
 *                   Hannu Savolainen 1993-1996,
 *                   Rob Hooft
 *                   
 *  Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)
 *
 *  Most if code is ported from OSS/Lite.
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <sound/opl3.h>
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/minors.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Hannu Savolainen 1993-1996, Rob Hooft");
MODULE_DESCRIPTION("Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)");
MODULE_LICENSE("GPL");

extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];

static void snd_opl2_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
{
	unsigned long flags;
	unsigned long port;

	/*
	 * The original 2-OP synth requires a quite long delay
	 * after writing to a register.
	 */

	port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;

	spin_lock_irqsave(&opl3->reg_lock, flags);

	outb((unsigned char) cmd, port);
	udelay(10);

	outb((unsigned char) val, port + 1);
	udelay(30);

	spin_unlock_irqrestore(&opl3->reg_lock, flags);
}

static void snd_opl3_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
{
	unsigned long flags;
	unsigned long port;

	/*
	 * The OPL-3 survives with just two INBs
	 * after writing to a register.
	 */

	port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;

	spin_lock_irqsave(&opl3->reg_lock, flags);

	outb((unsigned char) cmd, port);
	inb(opl3->l_port);
	inb(opl3->l_port);

	outb((unsigned char) val, port + 1);
	inb(opl3->l_port);
	inb(opl3->l_port);

	spin_unlock_irqrestore(&opl3->reg_lock, flags);
}

static int snd_opl3_detect(struct snd_opl3 * opl3)
{
	/*
	 * This function returns 1 if the FM chip is present at the given I/O port
	 * The detection algorithm plays with the timer built in the FM chip and
	 * looks for a change in the status register.
	 *
	 * Note! The timers of the FM chip are not connected to AdLib (and compatible)
	 * boards.
	 *
	 * Note2! The chip is initialized if detected.
	 */

	unsigned char stat1, stat2, signature;

	/* Reset timers 1 and 2 */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK | OPL3_TIMER2_MASK);
	/* Reset the IRQ of the FM chip */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
	signature = stat1 = inb(opl3->l_port);	/* Status register */
	if ((stat1 & 0xe0) != 0x00) {	/* Should be 0x00 */
		snd_printd("OPL3: stat1 = 0x%x\n", stat1);
		return -ENODEV;
	}
	/* Set timer1 to 0xff */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER1, 0xff);
	/* Unmask and start timer 1 */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER2_MASK | OPL3_TIMER1_START);
	/* Now we have to delay at least 80us */
	udelay(200);
	/* Read status after timers have expired */
	stat2 = inb(opl3->l_port);
	/* Stop the timers */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK | OPL3_TIMER2_MASK);
	/* Reset the IRQ of the FM chip */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
	if ((stat2 & 0xe0) != 0xc0) {	/* There is no YM3812 */
		snd_printd("OPL3: stat2 = 0x%x\n", stat2);
		return -ENODEV;
	}

	/* If the toplevel code knows exactly the type of chip, don't try
	   to detect it. */
	if (opl3->hardware != OPL3_HW_AUTO)
		return 0;

	/* There is a FM chip on this address. Detect the type (OPL2 to OPL4) */
	if (signature == 0x06) {	/* OPL2 */
		opl3->hardware = OPL3_HW_OPL2;
	} else {
		/*
		 * If we had an OPL4 chip, opl3->hardware would have been set
		 * by the OPL4 driver; so we can assume OPL3 here.
		 */
		snd_assert(opl3->r_port != 0, return -ENODEV);
		opl3->hardware = OPL3_HW_OPL3;
	}
	return 0;
}

/*
 *  AdLib timers
 */

/*
 *  Timer 1 - 80us
 */

static int snd_opl3_timer1_start(struct snd_timer * timer)
{
	unsigned long flags;
	unsigned char tmp;
	unsigned int ticks;
	struct snd_opl3 *opl3;

	opl3 = snd_timer_chip(timer);
	spin_lock_irqsave(&opl3->timer_lock, flags);
	ticks = timer->sticks;
	tmp = (opl3->timer_enable | OPL3_TIMER1_START) & ~OPL3_TIMER1_MASK;
	opl3->timer_enable = tmp;
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER1, 256 - ticks);	/* timer 1 count */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp);	/* enable timer 1 IRQ */
	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	return 0;
}

static int snd_opl3_timer1_stop(struct snd_timer * timer)
{
	unsigned long flags;
	unsigned char tmp;
	struct snd_opl3 *opl3;

	opl3 = snd_timer_chip(timer);
	spin_lock_irqsave(&opl3->timer_lock, flags);
	tmp = (opl3->timer_enable | OPL3_TIMER1_MASK) & ~OPL3_TIMER1_START;
	opl3->timer_enable = tmp;
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp);	/* disable timer #1 */
	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	return 0;
}

/*
 *  Timer 2 - 320us
 */

static int snd_opl3_timer2_start(struct snd_timer * timer)
{
	unsigned long flags;
	unsigned char tmp;
	unsigned int ticks;
	struct snd_opl3 *opl3;

	opl3 = snd_timer_chip(timer);
	spin_lock_irqsave(&opl3->timer_lock, flags);
	ticks = timer->sticks;
	tmp = (opl3->timer_enable | OPL3_TIMER2_START) & ~OPL3_TIMER2_MASK;
	opl3->timer_enable = tmp;
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER2, 256 - ticks);	/* timer 1 count */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp);	/* enable timer 1 IRQ */
	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	return 0;
}

static int snd_opl3_timer2_stop(struct snd_timer * timer)
{
	unsigned long flags;
	unsigned char tmp;
	struct snd_opl3 *opl3;

	opl3 = snd_timer_chip(timer);
	spin_lock_irqsave(&opl3->timer_lock, flags);
	tmp = (opl3->timer_enable | OPL3_TIMER2_MASK) & ~OPL3_TIMER2_START;
	opl3->timer_enable = tmp;
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TIMER_CONTROL, tmp);	/* disable timer #1 */
	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	return 0;
}

/*

 */

static struct snd_timer_hardware snd_opl3_timer1 =
{
	.flags =	SNDRV_TIMER_HW_STOP,
	.resolution =	80000,
	.ticks =	256,
	.start =	snd_opl3_timer1_start,
	.stop =		snd_opl3_timer1_stop,
};

static struct snd_timer_hardware snd_opl3_timer2 =
{
	.flags =	SNDRV_TIMER_HW_STOP,
	.resolution =	320000,
	.ticks =	256,
	.start =	snd_opl3_timer2_start,
	.stop =		snd_opl3_timer2_stop,
};

static int snd_opl3_timer1_init(struct snd_opl3 * opl3, int timer_no)
{
	struct snd_timer *timer = NULL;
	struct snd_timer_id tid;
	int err;

	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
	tid.card = opl3->card->number;
	tid.device = timer_no;
	tid.subdevice = 0;
	if ((err = snd_timer_new(opl3->card, "AdLib timer #1", &tid, &timer)) >= 0) {
		strcpy(timer->name, "AdLib timer #1");
		timer->private_data = opl3;
		timer->hw = snd_opl3_timer1;
	}
	opl3->timer1 = timer;
	return err;
}

static int snd_opl3_timer2_init(struct snd_opl3 * opl3, int timer_no)
{
	struct snd_timer *timer = NULL;
	struct snd_timer_id tid;
	int err;

	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
	tid.card = opl3->card->number;
	tid.device = timer_no;
	tid.subdevice = 0;
	if ((err = snd_timer_new(opl3->card, "AdLib timer #2", &tid, &timer)) >= 0) {
		strcpy(timer->name, "AdLib timer #2");
		timer->private_data = opl3;
		timer->hw = snd_opl3_timer2;
	}
	opl3->timer2 = timer;
	return err;
}

/*

 */

void snd_opl3_interrupt(struct snd_hwdep * hw)
{
	unsigned char status;
	struct snd_opl3 *opl3;
	struct snd_timer *timer;

	if (hw == NULL)
		return;

	opl3 = hw->private_data;
	status = inb(opl3->l_port);
#if 0
	snd_printk("AdLib IRQ status = 0x%x\n", status);
#endif
	if (!(status & 0x80))
		return;

	if (status & 0x40) {
		timer = opl3->timer1;
		snd_timer_interrupt(timer, timer->sticks);
	}
	if (status & 0x20) {
		timer = opl3->timer2;
		snd_timer_interrupt(timer, timer->sticks);
	}
}

/*

 */

static int snd_opl3_free(struct snd_opl3 *opl3)
{
	snd_assert(opl3 != NULL, return -ENXIO);
	if (opl3->private_free)
		opl3->private_free(opl3);
	release_and_free_resource(opl3->res_l_port);
	release_and_free_resource(opl3->res_r_port);
	kfree(opl3);
	return 0;
}

static int snd_opl3_dev_free(struct snd_device *device)
{
	struct snd_opl3 *opl3 = device->device_data;
	return snd_opl3_free(opl3);
}

int snd_opl3_new(struct snd_card *card,
		 unsigned short hardware,
		 struct snd_opl3 **ropl3)
{
	static struct snd_device_ops ops = {
		.dev_free = snd_opl3_dev_free,
	};
	struct snd_opl3 *opl3;
	int err;

	*ropl3 = NULL;
	opl3 = kzalloc(sizeof(*opl3), GFP_KERNEL);
	if (opl3 == NULL) {
		snd_printk(KERN_ERR "opl3: cannot allocate\n");
		return -ENOMEM;
	}

	opl3->card = card;
	opl3->hardware = hardware;
	spin_lock_init(&opl3->reg_lock);
	spin_lock_init(&opl3->timer_lock);
	mutex_init(&opl3->access_mutex);

	if ((err = snd_device_new(card, SNDRV_DEV_CODEC, opl3, &ops)) < 0) {
		snd_opl3_free(opl3);
		return err;
	}

	*ropl3 = opl3;
	return 0;
}

int snd_opl3_init(struct snd_opl3 *opl3)
{
	if (! opl3->command) {
		printk(KERN_ERR "snd_opl3_init: command not defined!\n");
		return -EINVAL;
	}

	opl3->command(opl3, OPL3_LEFT | OPL3_REG_TEST, OPL3_ENABLE_WAVE_SELECT);
	/* Melodic mode */
	opl3->command(opl3, OPL3_LEFT | OPL3_REG_PERCUSSION, 0x00);

	switch (opl3->hardware & OPL3_HW_MASK) {
	case OPL3_HW_OPL2:
		opl3->max_voices = MAX_OPL2_VOICES;
		break;
	case OPL3_HW_OPL3:
	case OPL3_HW_OPL4:
		opl3->max_voices = MAX_OPL3_VOICES;
		/* Enter OPL3 mode */
		opl3->command(opl3, OPL3_RIGHT | OPL3_REG_MODE, OPL3_OPL3_ENABLE);
	}
	return 0;
}

int snd_opl3_create(struct snd_card *card,
		    unsigned long l_port,
		    unsigned long r_port,
		    unsigned short hardware,
		    int integrated,
		    struct snd_opl3 ** ropl3)
{
	struct snd_opl3 *opl3;
	int err;

	*ropl3 = NULL;
	if ((err = snd_opl3_new(card, hardware, &opl3)) < 0)
		return err;
	if (! integrated) {
		if ((opl3->res_l_port = request_region(l_port, 2, "OPL2/3 (left)")) == NULL) {
			snd_printk(KERN_ERR "opl3: can't grab left port 0x%lx\n", l_port);
			snd_device_free(card, opl3);
			return -EBUSY;
		}
		if (r_port != 0 &&
		    (opl3->res_r_port = request_region(r_port, 2, "OPL2/3 (right)")) == NULL) {
			snd_printk(KERN_ERR "opl3: can't grab right port 0x%lx\n", r_port);
			snd_device_free(card, opl3);
			return -EBUSY;
		}
	}
	opl3->l_port = l_port;
	opl3->r_port = r_port;

	switch (opl3->hardware) {
	/* some hardware doesn't support timers */
	case OPL3_HW_OPL3_SV:
	case OPL3_HW_OPL3_CS:
	case OPL3_HW_OPL3_FM801:
		opl3->command = &snd_opl3_command;
		break;
	default:
		opl3->command = &snd_opl2_command;
		if ((err = snd_opl3_detect(opl3)) < 0) {
			snd_printd("OPL2/3 chip not detected at 0x%lx/0x%lx\n",
				   opl3->l_port, opl3->r_port);
			snd_device_free(card, opl3);
			return err;
		}
		/* detect routine returns correct hardware type */
		switch (opl3->hardware & OPL3_HW_MASK) {
		case OPL3_HW_OPL3:
		case OPL3_HW_OPL4:
			opl3->command = &snd_opl3_command;
		}
	}

	snd_opl3_init(opl3);

	*ropl3 = opl3;
	return 0;
}

int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev)
{
	int err;

	if (timer1_dev >= 0)
		if ((err = snd_opl3_timer1_init(opl3, timer1_dev)) < 0)
			return err;
	if (timer2_dev >= 0) {
		if ((err = snd_opl3_timer2_init(opl3, timer2_dev)) < 0) {
			snd_device_free(opl3->card, opl3->timer1);
			opl3->timer1 = NULL;
			return err;
		}
	}
	return 0;
}

int snd_opl3_hwdep_new(struct snd_opl3 * opl3,
		       int device, int seq_device,
		       struct snd_hwdep ** rhwdep)
{
	struct snd_hwdep *hw;
	struct snd_card *card = opl3->card;
	int err;

	if (rhwdep)
		*rhwdep = NULL;

	/* create hardware dependent device (direct FM) */

	if ((err = snd_hwdep_new(card, "OPL2/OPL3", device, &hw)) < 0) {
		snd_device_free(card, opl3);
		return err;
	}
	hw->private_data = opl3;
#ifdef CONFIG_SND_OSSEMUL
	if (device == 0) {
		hw->oss_type = SNDRV_OSS_DEVICE_TYPE_DMFM;
		sprintf(hw->oss_dev, "dmfm%i", card->number);
	}
#endif
	strcpy(hw->name, hw->id);
	switch (opl3->hardware & OPL3_HW_MASK) {
	case OPL3_HW_OPL2:
		strcpy(hw->name, "OPL2 FM");
		hw->iface = SNDRV_HWDEP_IFACE_OPL2;
		break;
	case OPL3_HW_OPL3:
		strcpy(hw->name, "OPL3 FM");
		hw->iface = SNDRV_HWDEP_IFACE_OPL3;
		break;
	case OPL3_HW_OPL4:
		strcpy(hw->name, "OPL4 FM");
		hw->iface = SNDRV_HWDEP_IFACE_OPL4;
		break;
	}

	/* operators - only ioctl */
	hw->ops.open = snd_opl3_open;
	hw->ops.ioctl = snd_opl3_ioctl;
	hw->ops.release = snd_opl3_release;

	opl3->seq_dev_num = seq_device;
#if defined(CONFIG_SND_SEQUENCER) || (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
	if (snd_seq_device_new(card, seq_device, SNDRV_SEQ_DEV_ID_OPL3,
			       sizeof(struct snd_opl3 *), &opl3->seq_dev) >= 0) {
		strcpy(opl3->seq_dev->name, hw->name);
		*(struct snd_opl3 **)SNDRV_SEQ_DEVICE_ARGPTR(opl3->seq_dev) = opl3;
	}
#endif
	if (rhwdep)
		*rhwdep = hw;
	return 0;
}

EXPORT_SYMBOL(snd_opl3_interrupt);
EXPORT_SYMBOL(snd_opl3_new);
EXPORT_SYMBOL(snd_opl3_init);
EXPORT_SYMBOL(snd_opl3_create);
EXPORT_SYMBOL(snd_opl3_timer_new);
EXPORT_SYMBOL(snd_opl3_hwdep_new);

/* opl3_synth.c */
EXPORT_SYMBOL(snd_opl3_regmap);
EXPORT_SYMBOL(snd_opl3_reset);

/*
 *  INIT part
 */

static int __init alsa_opl3_init(void)
{
	return 0;
}

static void __exit alsa_opl3_exit(void)
{
}

module_init(alsa_opl3_init)
module_exit(alsa_opl3_exit)
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
	3	* Hannu Savolainen 1993-1996,
	4	* Rob Hooft
	5	*
	6	* Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)
	7	*
	8	* Most if code is ported from OSS/Lite.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*
	24	*/
	25
	26	#include <sound/opl3.h>
	27	#include <asm/io.h>
	28	#include <linux/delay.h>
	29	#include <linux/init.h>
	30	#include <linux/slab.h>
	31	#include <linux/ioport.h>
	32	#include <sound/minors.h>
	33
	34	MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Hannu Savolainen 1993-1996, Rob Hooft");
	35	MODULE_DESCRIPTION("Routines for control of AdLib FM cards (OPL2/OPL3/OPL4 chips)");
	36	MODULE_LICENSE("GPL");
	37
	38	extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
	39
5b1646a8	40	static void snd_opl2_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
1da177e4 LT	41	{
	42	unsigned long flags;
	43	unsigned long port;
	44
	45	/*
	46	* The original 2-OP synth requires a quite long delay
	47	* after writing to a register.
	48	*/
	49
	50	port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;
	51
	52	spin_lock_irqsave(&opl3->reg_lock, flags);
	53
	54	outb((unsigned char) cmd, port);
	55	udelay(10);
	56
	57	outb((unsigned char) val, port + 1);
	58	udelay(30);
	59
	60	spin_unlock_irqrestore(&opl3->reg_lock, flags);
	61	}
	62
5b1646a8	63	static void snd_opl3_command(struct snd_opl3 * opl3, unsigned short cmd, unsigned char val)
1da177e4 LT	64	{
	65	unsigned long flags;
	66	unsigned long port;
	67
	68	/*
	69	* The OPL-3 survives with just two INBs
	70	* after writing to a register.
	71	*/
	72
	73	port = (cmd & OPL3_RIGHT) ? opl3->r_port : opl3->l_port;
	74
	75	spin_lock_irqsave(&opl3->reg_lock, flags);
	76
	77	outb((unsigned char) cmd, port);
	78	inb(opl3->l_port);
	79	inb(opl3->l_port);
	80
	81	outb((unsigned char) val, port + 1);
	82	inb(opl3->l_port);
	83	inb(opl3->l_port);
	84
	85	spin_unlock_irqrestore(&opl3->reg_lock, flags);
	86	}
	87
5b1646a8	88	static int snd_opl3_detect(struct snd_opl3 * opl3)
1da177e4 LT	89	{
	90	/*
	91	* This function returns 1 if the FM chip is present at the given I/O port
	92	* The detection algorithm plays with the timer built in the FM chip and
	93	* looks for a change in the status register.
	94	*
	95	* Note! The timers of the FM chip are not connected to AdLib (and compatible)
	96	* boards.
	97	*
	98	* Note2! The chip is initialized if detected.
	99	*/
	100
	101	unsigned char stat1, stat2, signature;
	102
	103	/* Reset timers 1 and 2 */
	104	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK \| OPL3_TIMER2_MASK);
	105	/* Reset the IRQ of the FM chip */
	106	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
	107	signature = stat1 = inb(opl3->l_port); /* Status register */
	108	if ((stat1 & 0xe0) != 0x00) { /* Should be 0x00 */
	109	snd_printd("OPL3: stat1 = 0x%x\n", stat1);
	110	return -ENODEV;
	111	}
	112	/* Set timer1 to 0xff */
	113	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER1, 0xff);
	114	/* Unmask and start timer 1 */
	115	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, OPL3_TIMER2_MASK \| OPL3_TIMER1_START);
	116	/* Now we have to delay at least 80us */
	117	udelay(200);
	118	/* Read status after timers have expired */
	119	stat2 = inb(opl3->l_port);
	120	/* Stop the timers */
	121	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, OPL3_TIMER1_MASK \| OPL3_TIMER2_MASK);
	122	/* Reset the IRQ of the FM chip */
	123	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, OPL3_IRQ_RESET);
	124	if ((stat2 & 0xe0) != 0xc0) { /* There is no YM3812 */
	125	snd_printd("OPL3: stat2 = 0x%x\n", stat2);
	126	return -ENODEV;
	127	}
	128
	129	/* If the toplevel code knows exactly the type of chip, don't try
	130	to detect it. */
	131	if (opl3->hardware != OPL3_HW_AUTO)
	132	return 0;
	133
	134	/* There is a FM chip on this address. Detect the type (OPL2 to OPL4) */
	135	if (signature == 0x06) { /* OPL2 */
	136	opl3->hardware = OPL3_HW_OPL2;
	137	} else {
	138	/*
	139	* If we had an OPL4 chip, opl3->hardware would have been set
	140	* by the OPL4 driver; so we can assume OPL3 here.
	141	*/
	142	snd_assert(opl3->r_port != 0, return -ENODEV);
	143	opl3->hardware = OPL3_HW_OPL3;
	144	}
	145	return 0;
	146	}
	147
	148	/*
	149	* AdLib timers
	150	*/
	151
	152	/*
153	* Timer 1 - 80us
154	*/
155
5b1646a8	156	static int snd_opl3_timer1_start(struct snd_timer * timer)
1da177e4 LT	157	{
	158	unsigned long flags;
	159	unsigned char tmp;
	160	unsigned int ticks;
5b1646a8	161	struct snd_opl3 *opl3;
1da177e4 LT	162
	163	opl3 = snd_timer_chip(timer);
	164	spin_lock_irqsave(&opl3->timer_lock, flags);
	165	ticks = timer->sticks;
	166	tmp = (opl3->timer_enable \| OPL3_TIMER1_START) & ~OPL3_TIMER1_MASK;
	167	opl3->timer_enable = tmp;
	168	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER1, 256 - ticks); /* timer 1 count */
	169	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, tmp); /* enable timer 1 IRQ */
	170	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	171	return 0;
	172	}
	173
5b1646a8	174	static int snd_opl3_timer1_stop(struct snd_timer * timer)
1da177e4 LT	175	{
	176	unsigned long flags;
	177	unsigned char tmp;
5b1646a8	178	struct snd_opl3 *opl3;
1da177e4 LT	179
	180	opl3 = snd_timer_chip(timer);
	181	spin_lock_irqsave(&opl3->timer_lock, flags);
	182	tmp = (opl3->timer_enable \| OPL3_TIMER1_MASK) & ~OPL3_TIMER1_START;
	183	opl3->timer_enable = tmp;
	184	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, tmp); /* disable timer #1 */
	185	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	186	return 0;
	187	}
	188
	189	/*
	190	* Timer 2 - 320us
	191	*/
	192
5b1646a8	193	static int snd_opl3_timer2_start(struct snd_timer * timer)
1da177e4 LT	194	{
	195	unsigned long flags;
	196	unsigned char tmp;
	197	unsigned int ticks;
5b1646a8	198	struct snd_opl3 *opl3;
1da177e4 LT	199
	200	opl3 = snd_timer_chip(timer);
	201	spin_lock_irqsave(&opl3->timer_lock, flags);
	202	ticks = timer->sticks;
	203	tmp = (opl3->timer_enable \| OPL3_TIMER2_START) & ~OPL3_TIMER2_MASK;
	204	opl3->timer_enable = tmp;
	205	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER2, 256 - ticks); /* timer 1 count */
	206	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, tmp); /* enable timer 1 IRQ */
	207	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	208	return 0;
	209	}
	210
5b1646a8	211	static int snd_opl3_timer2_stop(struct snd_timer * timer)
1da177e4 LT	212	{
	213	unsigned long flags;
	214	unsigned char tmp;
5b1646a8	215	struct snd_opl3 *opl3;
1da177e4 LT	216
	217	opl3 = snd_timer_chip(timer);
	218	spin_lock_irqsave(&opl3->timer_lock, flags);
	219	tmp = (opl3->timer_enable \| OPL3_TIMER2_MASK) & ~OPL3_TIMER2_START;
	220	opl3->timer_enable = tmp;
	221	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TIMER_CONTROL, tmp); /* disable timer #1 */
	222	spin_unlock_irqrestore(&opl3->timer_lock, flags);
	223	return 0;
	224	}
	225
	226	/*
	227
	228	*/
	229
5b1646a8	230	static struct snd_timer_hardware snd_opl3_timer1 =
1da177e4 LT	231	{
	232	.flags = SNDRV_TIMER_HW_STOP,
	233	.resolution = 80000,
	234	.ticks = 256,
	235	.start = snd_opl3_timer1_start,
	236	.stop = snd_opl3_timer1_stop,
	237	};
	238
5b1646a8	239	static struct snd_timer_hardware snd_opl3_timer2 =
1da177e4 LT	240	{
	241	.flags = SNDRV_TIMER_HW_STOP,
	242	.resolution = 320000,
	243	.ticks = 256,
	244	.start = snd_opl3_timer2_start,
	245	.stop = snd_opl3_timer2_stop,
	246	};
	247
5b1646a8	248	static int snd_opl3_timer1_init(struct snd_opl3 * opl3, int timer_no)
1da177e4	249	{
5b1646a8 TI	250	struct snd_timer *timer = NULL;
5b1646a8 TI	251	struct snd_timer_id tid;
1da177e4 LT	252	int err;
	253
	254	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
	255	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
	256	tid.card = opl3->card->number;
	257	tid.device = timer_no;
	258	tid.subdevice = 0;
	259	if ((err = snd_timer_new(opl3->card, "AdLib timer #1", &tid, &timer)) >= 0) {
	260	strcpy(timer->name, "AdLib timer #1");
	261	timer->private_data = opl3;
	262	timer->hw = snd_opl3_timer1;
	263	}
	264	opl3->timer1 = timer;
	265	return err;
	266	}
	267
5b1646a8	268	static int snd_opl3_timer2_init(struct snd_opl3 * opl3, int timer_no)
1da177e4	269	{
5b1646a8 TI	270	struct snd_timer *timer = NULL;
5b1646a8 TI	271	struct snd_timer_id tid;
1da177e4 LT	272	int err;
	273
	274	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
	275	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
	276	tid.card = opl3->card->number;
	277	tid.device = timer_no;
	278	tid.subdevice = 0;
	279	if ((err = snd_timer_new(opl3->card, "AdLib timer #2", &tid, &timer)) >= 0) {
	280	strcpy(timer->name, "AdLib timer #2");
	281	timer->private_data = opl3;
	282	timer->hw = snd_opl3_timer2;
	283	}
	284	opl3->timer2 = timer;
	285	return err;
	286	}
	287
	288	/*
	289
	290	*/
	291
5b1646a8	292	void snd_opl3_interrupt(struct snd_hwdep * hw)
1da177e4 LT	293	{
1da177e4 LT	294	unsigned char status;
5b1646a8 TI	295	struct snd_opl3 *opl3;
5b1646a8 TI	296	struct snd_timer *timer;
1da177e4 LT	297
	298	if (hw == NULL)
	299	return;
	300
	301	opl3 = hw->private_data;
	302	status = inb(opl3->l_port);
	303	#if 0
	304	snd_printk("AdLib IRQ status = 0x%x\n", status);
	305	#endif
	306	if (!(status & 0x80))
	307	return;
	308
	309	if (status & 0x40) {
	310	timer = opl3->timer1;
	311	snd_timer_interrupt(timer, timer->sticks);
	312	}
	313	if (status & 0x20) {
	314	timer = opl3->timer2;
	315	snd_timer_interrupt(timer, timer->sticks);
	316	}
	317	}
	318
	319	/*
	320
	321	*/
	322
5b1646a8	323	static int snd_opl3_free(struct snd_opl3 *opl3)
1da177e4 LT	324	{
	325	snd_assert(opl3 != NULL, return -ENXIO);
	326	if (opl3->private_free)
	327	opl3->private_free(opl3);
b1d5776d TI	328	release_and_free_resource(opl3->res_l_port);
b1d5776d TI	329	release_and_free_resource(opl3->res_r_port);
1da177e4 LT	330	kfree(opl3);
	331	return 0;
	332	}
	333
5b1646a8	334	static int snd_opl3_dev_free(struct snd_device *device)
1da177e4	335	{
5b1646a8	336	struct snd_opl3 *opl3 = device->device_data;
1da177e4 LT	337	return snd_opl3_free(opl3);
	338	}
	339
5b1646a8	340	int snd_opl3_new(struct snd_card *card,
1da177e4	341	unsigned short hardware,
5b1646a8	342	struct snd_opl3 **ropl3)
1da177e4	343	{
5b1646a8	344	static struct snd_device_ops ops = {
1da177e4 LT	345	.dev_free = snd_opl3_dev_free,
1da177e4 LT	346	};
5b1646a8	347	struct snd_opl3 *opl3;
1da177e4 LT	348	int err;
	349
	350	*ropl3 = NULL;
561b220a	351	opl3 = kzalloc(sizeof(*opl3), GFP_KERNEL);
73e77ba0 TI	352	if (opl3 == NULL) {
73e77ba0 TI	353	snd_printk(KERN_ERR "opl3: cannot allocate\n");
1da177e4	354	return -ENOMEM;
73e77ba0	355	}
1da177e4 LT	356
	357	opl3->card = card;
	358	opl3->hardware = hardware;
	359	spin_lock_init(&opl3->reg_lock);
	360	spin_lock_init(&opl3->timer_lock);
ef9f0a42	361	mutex_init(&opl3->access_mutex);
1da177e4 LT	362
	363	if ((err = snd_device_new(card, SNDRV_DEV_CODEC, opl3, &ops)) < 0) {
	364	snd_opl3_free(opl3);
	365	return err;
	366	}
	367
	368	*ropl3 = opl3;
	369	return 0;
	370	}
	371
5b1646a8	372	int snd_opl3_init(struct snd_opl3 *opl3)
1da177e4 LT	373	{
	374	if (! opl3->command) {
	375	printk(KERN_ERR "snd_opl3_init: command not defined!\n");
	376	return -EINVAL;
	377	}
	378
	379	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_TEST, OPL3_ENABLE_WAVE_SELECT);
	380	/* Melodic mode */
	381	opl3->command(opl3, OPL3_LEFT \| OPL3_REG_PERCUSSION, 0x00);
	382
	383	switch (opl3->hardware & OPL3_HW_MASK) {
	384	case OPL3_HW_OPL2:
	385	opl3->max_voices = MAX_OPL2_VOICES;
	386	break;
	387	case OPL3_HW_OPL3:
	388	case OPL3_HW_OPL4:
	389	opl3->max_voices = MAX_OPL3_VOICES;
	390	/* Enter OPL3 mode */
	391	opl3->command(opl3, OPL3_RIGHT \| OPL3_REG_MODE, OPL3_OPL3_ENABLE);
	392	}
	393	return 0;
	394	}
	395
5b1646a8	396	int snd_opl3_create(struct snd_card *card,
1da177e4 LT	397	unsigned long l_port,
	398	unsigned long r_port,
	399	unsigned short hardware,
	400	int integrated,
5b1646a8	401	struct snd_opl3 ** ropl3)
1da177e4	402	{
5b1646a8	403	struct snd_opl3 *opl3;
1da177e4 LT	404	int err;
	405
	406	*ropl3 = NULL;
	407	if ((err = snd_opl3_new(card, hardware, &opl3)) < 0)
	408	return err;
	409	if (! integrated) {
	410	if ((opl3->res_l_port = request_region(l_port, 2, "OPL2/3 (left)")) == NULL) {
	411	snd_printk(KERN_ERR "opl3: can't grab left port 0x%lx\n", l_port);
676338a1	412	snd_device_free(card, opl3);
1da177e4 LT	413	return -EBUSY;
	414	}
	415	if (r_port != 0 &&
	416	(opl3->res_r_port = request_region(r_port, 2, "OPL2/3 (right)")) == NULL) {
	417	snd_printk(KERN_ERR "opl3: can't grab right port 0x%lx\n", r_port);
676338a1	418	snd_device_free(card, opl3);
1da177e4 LT	419	return -EBUSY;
	420	}
	421	}
	422	opl3->l_port = l_port;
	423	opl3->r_port = r_port;
	424
	425	switch (opl3->hardware) {
	426	/* some hardware doesn't support timers */
	427	case OPL3_HW_OPL3_SV:
	428	case OPL3_HW_OPL3_CS:
	429	case OPL3_HW_OPL3_FM801:
	430	opl3->command = &snd_opl3_command;
	431	break;
	432	default:
	433	opl3->command = &snd_opl2_command;
	434	if ((err = snd_opl3_detect(opl3)) < 0) {
	435	snd_printd("OPL2/3 chip not detected at 0x%lx/0x%lx\n",
	436	opl3->l_port, opl3->r_port);
676338a1	437	snd_device_free(card, opl3);
1da177e4 LT	438	return err;
	439	}
	440	/* detect routine returns correct hardware type */
	441	switch (opl3->hardware & OPL3_HW_MASK) {
	442	case OPL3_HW_OPL3:
	443	case OPL3_HW_OPL4:
	444	opl3->command = &snd_opl3_command;
	445	}
	446	}
	447
	448	snd_opl3_init(opl3);
	449
	450	*ropl3 = opl3;
	451	return 0;
	452	}
	453
5b1646a8	454	int snd_opl3_timer_new(struct snd_opl3 * opl3, int timer1_dev, int timer2_dev)
1da177e4 LT	455	{
	456	int err;
	457
	458	if (timer1_dev >= 0)
	459	if ((err = snd_opl3_timer1_init(opl3, timer1_dev)) < 0)
	460	return err;
	461	if (timer2_dev >= 0) {
	462	if ((err = snd_opl3_timer2_init(opl3, timer2_dev)) < 0) {
	463	snd_device_free(opl3->card, opl3->timer1);
	464	opl3->timer1 = NULL;
	465	return err;
	466	}
	467	}
	468	return 0;
	469	}
	470
5b1646a8	471	int snd_opl3_hwdep_new(struct snd_opl3 * opl3,
1da177e4	472	int device, int seq_device,
5b1646a8	473	struct snd_hwdep ** rhwdep)
1da177e4	474	{
5b1646a8 TI	475	struct snd_hwdep *hw;
5b1646a8 TI	476	struct snd_card *card = opl3->card;
1da177e4 LT	477	int err;
	478
	479	if (rhwdep)
	480	*rhwdep = NULL;
	481
	482	/* create hardware dependent device (direct FM) */
	483
	484	if ((err = snd_hwdep_new(card, "OPL2/OPL3", device, &hw)) < 0) {
	485	snd_device_free(card, opl3);
	486	return err;
	487	}
	488	hw->private_data = opl3;
	489	#ifdef CONFIG_SND_OSSEMUL
	490	if (device == 0) {
	491	hw->oss_type = SNDRV_OSS_DEVICE_TYPE_DMFM;
	492	sprintf(hw->oss_dev, "dmfm%i", card->number);
	493	}
	494	#endif
	495	strcpy(hw->name, hw->id);
	496	switch (opl3->hardware & OPL3_HW_MASK) {
	497	case OPL3_HW_OPL2:
	498	strcpy(hw->name, "OPL2 FM");
	499	hw->iface = SNDRV_HWDEP_IFACE_OPL2;
	500	break;
	501	case OPL3_HW_OPL3:
	502	strcpy(hw->name, "OPL3 FM");
	503	hw->iface = SNDRV_HWDEP_IFACE_OPL3;
	504	break;
	505	case OPL3_HW_OPL4:
	506	strcpy(hw->name, "OPL4 FM");
	507	hw->iface = SNDRV_HWDEP_IFACE_OPL4;
	508	break;
	509	}
	510
	511	/* operators - only ioctl */
	512	hw->ops.open = snd_opl3_open;
	513	hw->ops.ioctl = snd_opl3_ioctl;
	514	hw->ops.release = snd_opl3_release;
	515
	516	opl3->seq_dev_num = seq_device;
	517	#if defined(CONFIG_SND_SEQUENCER) \|\| (defined(MODULE) && defined(CONFIG_SND_SEQUENCER_MODULE))
	518	if (snd_seq_device_new(card, seq_device, SNDRV_SEQ_DEV_ID_OPL3,
5b1646a8	519	sizeof(struct snd_opl3 *), &opl3->seq_dev) >= 0) {
1da177e4	520	strcpy(opl3->seq_dev->name, hw->name);
5b1646a8	521	(struct snd_opl3 *)SNDRV_SEQ_DEVICE_ARGPTR(opl3->seq_dev) = opl3;
1da177e4 LT	522	}
	523	#endif
	524	if (rhwdep)
	525	*rhwdep = hw;
	526	return 0;
	527	}
	528
	529	EXPORT_SYMBOL(snd_opl3_interrupt);
	530	EXPORT_SYMBOL(snd_opl3_new);
	531	EXPORT_SYMBOL(snd_opl3_init);
	532	EXPORT_SYMBOL(snd_opl3_create);
	533	EXPORT_SYMBOL(snd_opl3_timer_new);
	534	EXPORT_SYMBOL(snd_opl3_hwdep_new);
	535
	536	/* opl3_synth.c */
	537	EXPORT_SYMBOL(snd_opl3_regmap);
	538	EXPORT_SYMBOL(snd_opl3_reset);
	539
	540	/*
	541	* INIT part
	542	*/
	543
	544	static int __init alsa_opl3_init(void)
	545	{
	546	return 0;
	547	}
	548
	549	static void __exit alsa_opl3_exit(void)
	550	{
	551	}
	552
	553	module_init(alsa_opl3_init)
	554	module_exit(alsa_opl3_exit)