/* Driver for Media Vision Jazz16 based boards.
 *
 * Copyright (c) 2007 by Rask Ingemann Lambertsen
 *
 *   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
 *
 * The Jazz16 is an SB Pro compatible chip with a 16-bit mode and higher
 * playback and capture rates added to it. It is not SB 16 compatible.
 * The chip has an MPU-401 interface which is handled by the MPU-401 driver.
 *
 * The IBM PPS Model 6015 has a Jazz16 chip on board. Please tell me if it
 * works with this driver or not.
 */

#include <sound/driver.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/isa.h>
#include <linux/ioport.h>
#include <asm/dma.h>
#include <asm/io.h>
#include <sound/core.h>
#include <sound/sb.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/initval.h>

#define CRD_NAME "Media Vision Jazz16"
#define DEV_NAME "jazz16"

MODULE_DESCRIPTION(CRD_NAME);
MODULE_AUTHOR("Rask Ingemann Lambertsen <rask@sygehus.dk>");
MODULE_LICENSE("GPL");

static int index = SNDRV_DEFAULT_IDX1;		/* Index 0-MAX */
static char *id = SNDRV_DEFAULT_STR1;		/* ID for this card */
static int enable = SNDRV_DEFAULT_ENABLE1;	/* Enable this card */
static long port = SNDRV_DEFAULT_PORT1;		/* 0x220,0x240,0x260 */
static long mpu_port = SNDRV_DEFAULT_PORT1;	/* 0x310,0x320,0x330 */
static int irq = SNDRV_DEFAULT_IRQ1;		/* 5,9,3,7,10,15 */
static int mpu_irq = SNDRV_DEFAULT_IRQ1;	/* 5,9,3,7,10,15 */
static int dma8 = SNDRV_DEFAULT_DMA1;		/* 1,3 */
static int dma16 = SNDRV_DEFAULT_DMA1;		/* 5,7 */

module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
module_param(enable, bool, 0444);
MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
module_param(port, long, 0444);
MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
module_param(mpu_port, long, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
module_param(irq, int, 0444);
MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
module_param(mpu_irq, int, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
module_param(dma8, int, 0444);
MODULE_PARM_DESC(dma8, "8-bit DMA # for " CRD_NAME " driver.");
module_param(dma16, int, 0444);
MODULE_PARM_DESC(dma16, "16-bit DMA # for " CRD_NAME " driver.");

static int __devinit snd_jazz16_match(struct device *dev, unsigned int n)
{
	if (!enable)
		return 0;

	if (port == SNDRV_AUTO_PORT) {
		snd_printk(KERN_ERR "%s: please specify port\n", dev->bus_id);
		return 0;
	}
	if (irq == SNDRV_AUTO_IRQ) {
		snd_printk(KERN_ERR "%s: please specify irq\n", dev->bus_id);
		return 0;
	}
	if (dma8 == SNDRV_AUTO_DMA) {
		snd_printk(KERN_ERR "%s: please specify dma8\n", dev->bus_id);
		return 0;
	}
	if (dma16 == SNDRV_AUTO_DMA) {
		snd_printk(KERN_ERR "%s: please specify dma16\n", dev->bus_id);
		return 0;
	}
	return 1;
}

static void __devinit snd_jazz16_set_ports(u8 value)
{
        outb(SB_JAZZ16_WAKEUP, SB_JAZZ16_CONFIG_PORT);
        outb(SB_JAZZ16_SET_PORTS, SB_JAZZ16_CONFIG_PORT);
        outb(value, SB_JAZZ16_CONFIG_PORT);
}

#define BUSY_LOOPS 100000

static int __devinit snd_jazz16_sbdsp_command(u8 value)
{
        int i;

        for (i = BUSY_LOOPS; i; i--)
                if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
                        outb(value, SBP1(port, COMMAND));
                        return 0;
                }
        return -EIO;
}

#define JAZZ16_SET_DMAINTR 0xfb

static int __devinit snd_jazz16_enable(struct device *dev)
{
	static u8 irq_config[] = {0,0,2,3,0,1,0,4,0,2,5,0,0,0,0,6};
	static u8 dma_config[] = {0,1,0,2,0,3,0,4};
	u8 config = 0;

	int error;

	if (port == 0x220 || port == 0x240 || port == 0x260)
		config = port & 0x70;

	if (mpu_port == 0x310 || mpu_port == 0x320 || mpu_port == 0x330)
		config |= (mpu_port >> 4) & 0x07;

	snd_printd("%s: setting SB port = %#lx, MPU port = %#lx.\n",
		dev->bus_id, port, mpu_port);

	snd_jazz16_set_ports(config);

	snd_printd("%s: setting SB irq %d, dma %d&%d, MPU irq %d.\n",
		dev->bus_id, irq, dma8, dma16, mpu_irq);

	error = snd_jazz16_sbdsp_command(JAZZ16_SET_DMAINTR);
	if (error < 0)
		return error;

	config = dma_config[dma8] | dma_config[dma16] << 4;

	error = snd_jazz16_sbdsp_command(config);
	if (error < 0)
		return error;

	config = irq_config[irq] | irq_config[mpu_irq] << 4;

	return snd_jazz16_sbdsp_command(config);
}

static irqreturn_t snd_jazz16_interrupt(int irq, void *dev_id)
{
	return snd_sb8dsp_interrupt(dev_id);
}

static void snd_jazz16_free(struct snd_card *card)
{
	snd_jazz16_set_ports(0);
}

static int __devinit snd_jazz16_probe(struct device *dev, unsigned int n)
{
	struct snd_sb *chip;
	struct snd_card *card;
	struct snd_opl3 *opl3;
	int error;

	card = snd_card_new(index, id, THIS_MODULE, 0);
	if (!card)
		return -EINVAL;

	card->private_free = snd_jazz16_free;

	error = snd_jazz16_enable(dev);
	if (error < 0)
		goto out;

	error = snd_sbdsp_create(card, port, irq, snd_jazz16_interrupt,
			dma8, dma16, SB_HW_AUTO, &chip);
	if (error < 0) 
		goto out;

	if (chip->hardware != SB_HW_JAZZ16) {
		snd_printk(KERN_ERR "%s: not a Jazz16 chip at %#lx.\n",
			dev->bus_id, chip->port);
		error = -ENODEV;
		goto out;
	}

	strcpy(card->driver, "Jazz16");
	strcpy(card->shortname, "Media Vision Jazz16");
	sprintf(card->longname, "%s at %#lx, irq %d, dma8 %d, dma16 %d",
	         chip->name, chip->port, chip->irq, chip->dma8, chip->dma16);

	error = snd_sb8dsp_pcm(chip, 0, NULL);
	if (error < 0)
		goto out;

	error = snd_sbmixer_new(chip);
	if (error < 0)
		goto out;

	error = snd_opl3_create(card, chip->port, chip->port + 2, OPL3_HW_AUTO,
			1, &opl3);
	if (error < 0)
		snd_printk(KERN_WARNING "%s: no OPL device found, skipping.\n",
			dev->bus_id);
	else {
		error = snd_opl3_timer_new(opl3, 1, 2);
		if (error < 0)
			goto out;

		error = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
		if (error < 0)
			goto out;
	}

	snd_card_set_dev(card, dev);

	error = snd_card_register(card);
	if (error < 0)
		goto out;

	dev_set_drvdata(dev, card);
	return 0;

out:	snd_card_free(card);
	return error;
}

static int __devexit snd_jazz16_remove(struct device *dev, unsigned int n)
{
	snd_card_free(dev_get_drvdata(dev));
	dev_set_drvdata(dev, NULL);
	return 0;
}

static struct isa_driver snd_jazz16_driver = {
	.match		= snd_jazz16_match,
	.probe		= snd_jazz16_probe,
	.remove		= __devexit_p(snd_jazz16_remove),

	.driver		= {
		.name	= DEV_NAME
	}
};

static int __devinit alsa_card_jazz16_init(void)
{
	return isa_register_driver(&snd_jazz16_driver, 1);
}

static void __devexit alsa_card_jazz16_exit(void)
{
	isa_unregister_driver(&snd_jazz16_driver);
}

module_init (alsa_card_jazz16_init);
module_exit (alsa_card_jazz16_exit);