[net-next-2.6.git] / sound / drivers / mpu401 / mpu401.c

/*
 *  Driver for generic MPU-401 boards (UART mode only)
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
 *  Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
 *
 *
 *   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/driver.h>
#include <linux/init.h>
#include <linux/pnp.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include <sound/initval.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("MPU-401 UART");
MODULE_LICENSE("GPL");

static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
#ifdef CONFIG_PNP
static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#endif
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* MPU-401 port number */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* MPU-401 IRQ */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
#ifdef CONFIG_PNP
module_param_array(pnp, bool, NULL, 0444);
MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
#endif
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");

static struct platform_device *platform_devices[SNDRV_CARDS];
static int pnp_registered;
static unsigned int snd_mpu401_devices;

static int snd_mpu401_create(int dev, struct snd_card **rcard)
{
	struct snd_card *card;
	int err;

	*rcard = NULL;
	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	if (card == NULL)
		return -ENOMEM;
	strcpy(card->driver, "MPU-401 UART");
	strcpy(card->shortname, card->driver);
	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
	if (irq[dev] >= 0) {
		sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
	} else {
		strcat(card->longname, "polled");
	}

	if ((err = snd_mpu401_uart_new(card, 0,
				       MPU401_HW_MPU401,
				       port[dev], 0,
				       irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0, NULL)) < 0) {
		printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
		goto _err;
	}

	*rcard = card;
	return 0;

 _err:
	snd_card_free(card);
	return err;
}

static int __devinit snd_mpu401_probe(struct platform_device *devptr)
{
	int dev = devptr->id;
	int err;
	struct snd_card *card;

	if (port[dev] == SNDRV_AUTO_PORT) {
		snd_printk(KERN_ERR "specify port\n");
		return -EINVAL;
	}
	if (irq[dev] == SNDRV_AUTO_IRQ) {
		snd_printk(KERN_ERR "specify or disable IRQ\n");
		return -EINVAL;
	}
	err = snd_mpu401_create(dev, &card);
	if (err < 0)
		return err;
	snd_card_set_dev(card, &devptr->dev);
	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	platform_set_drvdata(devptr, card);
	return 0;
}

static int __devexit snd_mpu401_remove(struct platform_device *devptr)
{
	snd_card_free(platform_get_drvdata(devptr));
	platform_set_drvdata(devptr, NULL);
	return 0;
}

#define SND_MPU401_DRIVER	"snd_mpu401"

static struct platform_driver snd_mpu401_driver = {
	.probe		= snd_mpu401_probe,
	.remove		= __devexit_p(snd_mpu401_remove),
	.driver		= {
		.name	= SND_MPU401_DRIVER
	},
};


#ifdef CONFIG_PNP

#define IO_EXTENT 2

static struct pnp_device_id snd_mpu401_pnpids[] = {
	{ .id = "PNPb006" },
	{ .id = "" }
};

MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);

static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device,
				 const struct pnp_device_id *id)
{
	if (!pnp_port_valid(device, 0) ||
	    pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
		snd_printk(KERN_ERR "no PnP port\n");
		return -ENODEV;
	}
	if (pnp_port_len(device, 0) < IO_EXTENT) {
		snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
			   (unsigned long long)pnp_port_len(device, 0),
			   IO_EXTENT);
		return -ENODEV;
	}
	port[dev] = pnp_port_start(device, 0);

	if (!pnp_irq_valid(device, 0) ||
	    pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
		snd_printk(KERN_WARNING "no PnP irq, using polling\n");
		irq[dev] = -1;
	} else {
		irq[dev] = pnp_irq(device, 0);
	}
	return 0;
}

static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
					  const struct pnp_device_id *id)
{
	static int dev;
	struct snd_card *card;
	int err;

	for ( ; dev < SNDRV_CARDS; ++dev) {
		if (!enable[dev] || !pnp[dev])
			continue;
		err = snd_mpu401_pnp(dev, pnp_dev, id);
		if (err < 0)
			return err;
		err = snd_mpu401_create(dev, &card);
		if (err < 0)
			return err;
		if ((err = snd_card_register(card)) < 0) {
			snd_card_free(card);
			return err;
		}
		snd_card_set_dev(card, &pnp_dev->dev);
		pnp_set_drvdata(pnp_dev, card);
		snd_mpu401_devices++;
		++dev;
		return 0;
	}
	return -ENODEV;
}

static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
{
	struct snd_card *card = (struct snd_card *) pnp_get_drvdata(dev);

	snd_card_disconnect(card);
	snd_card_free_when_closed(card);
}

static struct pnp_driver snd_mpu401_pnp_driver = {
	.name = "mpu401",
	.id_table = snd_mpu401_pnpids,
	.probe = snd_mpu401_pnp_probe,
	.remove = __devexit_p(snd_mpu401_pnp_remove),
};
#else
static struct pnp_driver snd_mpu401_pnp_driver;
#endif

static void __init_or_module snd_mpu401_unregister_all(void)
{
	int i;

	if (pnp_registered)
		pnp_unregister_driver(&snd_mpu401_pnp_driver);
	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
		platform_device_unregister(platform_devices[i]);
	platform_driver_unregister(&snd_mpu401_driver);
}

static int __init alsa_card_mpu401_init(void)
{
	int i, err;

	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
		return err;

	for (i = 0; i < SNDRV_CARDS; i++) {
		struct platform_device *device;
		if (! enable[i])
			continue;
#ifdef CONFIG_PNP
		if (pnp[i])
			continue;
#endif
		device = platform_device_register_simple(SND_MPU401_DRIVER,
							 i, NULL, 0);
		if (IS_ERR(device))
			continue;
		if (!platform_get_drvdata(device)) {
			platform_device_unregister(device);
			continue;
		}
		platform_devices[i] = device;
		snd_mpu401_devices++;
	}
	err = pnp_register_driver(&snd_mpu401_pnp_driver);
	if (!err)
		pnp_registered = 1;

	if (!snd_mpu401_devices) {
#ifdef MODULE
		printk(KERN_ERR "MPU-401 device not found or device busy\n");
#endif
		snd_mpu401_unregister_all();
		return -ENODEV;
	}
	return 0;
}

static void __exit alsa_card_mpu401_exit(void)
{
	snd_mpu401_unregister_all();
}

module_init(alsa_card_mpu401_init)
module_exit(alsa_card_mpu401_exit)
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Driver for generic MPU-401 boards (UART mode only)
	3	* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
	4	* Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
	5	*
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	*/
	22
	23	#include <sound/driver.h>
	24	#include <linux/init.h>
	25	#include <linux/pnp.h>
b3fe9512 TI	26	#include <linux/err.h>
b3fe9512 TI	27	#include <linux/platform_device.h>
1da177e4 LT	28	#include <linux/moduleparam.h>
	29	#include <sound/core.h>
	30	#include <sound/mpu401.h>
	31	#include <sound/initval.h>
	32
	33	MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
	34	MODULE_DESCRIPTION("MPU-401 UART");
	35	MODULE_LICENSE("GPL");
	36
	37	static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
	38	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
	39	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
	40	#ifdef CONFIG_PNP
	41	static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
	42	#endif
	43	static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */
	44	static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */
	45
	46	module_param_array(index, int, NULL, 0444);
	47	MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
	48	module_param_array(id, charp, NULL, 0444);
	49	MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
	50	module_param_array(enable, bool, NULL, 0444);
	51	MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
	52	#ifdef CONFIG_PNP
	53	module_param_array(pnp, bool, NULL, 0444);
	54	MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
	55	#endif
	56	module_param_array(port, long, NULL, 0444);
	57	MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
	58	module_param_array(irq, int, NULL, 0444);
	59	MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
	60
f7a9275d	61	static struct platform_device *platform_devices[SNDRV_CARDS];
f301ae6a BH	62	static int pnp_registered;
f301ae6a BH	63	static unsigned int snd_mpu401_devices;
1da177e4	64
e1fad17b	65	static int snd_mpu401_create(int dev, struct snd_card **rcard)
1da177e4	66	{
e1fad17b	67	struct snd_card *card;
1da177e4 LT	68	int err;
	69
	70	*rcard = NULL;
	71	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	72	if (card == NULL)
	73	return -ENOMEM;
	74	strcpy(card->driver, "MPU-401 UART");
	75	strcpy(card->shortname, card->driver);
	76	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
	77	if (irq[dev] >= 0) {
	78	sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
	79	} else {
	80	strcat(card->longname, "polled");
	81	}
	82
16dab54b TI	83	if ((err = snd_mpu401_uart_new(card, 0,
	84	MPU401_HW_MPU401,
	85	port[dev], 0,
65ca68b3	86	irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0, NULL)) < 0) {
1da177e4	87	printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
16dab54b	88	goto _err;
1da177e4	89	}
16dab54b	90
1da177e4 LT	91	*rcard = card;
1da177e4 LT	92	return 0;
16dab54b TI	93
	94	_err:
	95	snd_card_free(card);
	96	return err;
1da177e4 LT	97	}
1da177e4 LT	98
b3fe9512	99	static int __devinit snd_mpu401_probe(struct platform_device *devptr)
1da177e4	100	{
b3fe9512 TI	101	int dev = devptr->id;
	102	int err;
	103	struct snd_card *card;
	104
1da177e4 LT	105	if (port[dev] == SNDRV_AUTO_PORT) {
	106	snd_printk(KERN_ERR "specify port\n");
	107	return -EINVAL;
	108	}
	109	if (irq[dev] == SNDRV_AUTO_IRQ) {
	110	snd_printk(KERN_ERR "specify or disable IRQ\n");
	111	return -EINVAL;
	112	}
b3fe9512 TI	113	err = snd_mpu401_create(dev, &card);
	114	if (err < 0)
	115	return err;
	116	snd_card_set_dev(card, &devptr->dev);
	117	if ((err = snd_card_register(card)) < 0) {
	118	snd_card_free(card);
	119	return err;
	120	}
	121	platform_set_drvdata(devptr, card);
	122	return 0;
1da177e4 LT	123	}
1da177e4 LT	124
b3fe9512 TI	125	static int __devexit snd_mpu401_remove(struct platform_device *devptr)
	126	{
	127	snd_card_free(platform_get_drvdata(devptr));
	128	platform_set_drvdata(devptr, NULL);
	129	return 0;
	130	}
	131
	132	#define SND_MPU401_DRIVER "snd_mpu401"
	133
	134	static struct platform_driver snd_mpu401_driver = {
	135	.probe = snd_mpu401_probe,
	136	.remove = __devexit_p(snd_mpu401_remove),
	137	.driver = {
	138	.name = SND_MPU401_DRIVER
	139	},
	140	};
	141
	142
1da177e4 LT	143	#ifdef CONFIG_PNP
	144
	145	#define IO_EXTENT 2
	146
	147	static struct pnp_device_id snd_mpu401_pnpids[] = {
	148	{ .id = "PNPb006" },
	149	{ .id = "" }
	150	};
	151
	152	MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
	153
fad43488	154	static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device,
1da177e4 LT	155	const struct pnp_device_id *id)
	156	{
	157	if (!pnp_port_valid(device, 0) \|\|
	158	pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
	159	snd_printk(KERN_ERR "no PnP port\n");
	160	return -ENODEV;
	161	}
	162	if (pnp_port_len(device, 0) < IO_EXTENT) {
aa0a2ddc GKH	163	snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
	164	(unsigned long long)pnp_port_len(device, 0),
	165	IO_EXTENT);
1da177e4 LT	166	return -ENODEV;
	167	}
	168	port[dev] = pnp_port_start(device, 0);
	169
	170	if (!pnp_irq_valid(device, 0) \|\|
	171	pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
	172	snd_printk(KERN_WARNING "no PnP irq, using polling\n");
	173	irq[dev] = -1;
	174	} else {
	175	irq[dev] = pnp_irq(device, 0);
	176	}
	177	return 0;
	178	}
	179
	180	static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
	181	const struct pnp_device_id *id)
	182	{
	183	static int dev;
e1fad17b	184	struct snd_card *card;
1da177e4 LT	185	int err;
	186
	187	for ( ; dev < SNDRV_CARDS; ++dev) {
	188	if (!enable[dev] \|\| !pnp[dev])
	189	continue;
	190	err = snd_mpu401_pnp(dev, pnp_dev, id);
	191	if (err < 0)
	192	return err;
	193	err = snd_mpu401_create(dev, &card);
	194	if (err < 0)
	195	return err;
b3fe9512 TI	196	if ((err = snd_card_register(card)) < 0) {
	197	snd_card_free(card);
	198	return err;
	199	}
1da177e4 LT	200	snd_card_set_dev(card, &pnp_dev->dev);
1da177e4 LT	201	pnp_set_drvdata(pnp_dev, card);
f301ae6a	202	snd_mpu401_devices++;
1da177e4 LT	203	++dev;
	204	return 0;
	205	}
	206	return -ENODEV;
	207	}
	208
	209	static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
	210	{
e1fad17b	211	struct snd_card card = (struct snd_card ) pnp_get_drvdata(dev);
1da177e4 LT	212
1da177e4 LT	213	snd_card_disconnect(card);
2b29b13c	214	snd_card_free_when_closed(card);
1da177e4 LT	215	}
	216
	217	static struct pnp_driver snd_mpu401_pnp_driver = {
	218	.name = "mpu401",
	219	.id_table = snd_mpu401_pnpids,
	220	.probe = snd_mpu401_pnp_probe,
	221	.remove = __devexit_p(snd_mpu401_pnp_remove),
	222	};
	223	#else
	224	static struct pnp_driver snd_mpu401_pnp_driver;
	225	#endif
	226
f7a9275d CL	227	static void __init_or_module snd_mpu401_unregister_all(void)
	228	{
	229	int i;
	230
	231	if (pnp_registered)
	232	pnp_unregister_driver(&snd_mpu401_pnp_driver);
	233	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
	234	platform_device_unregister(platform_devices[i]);
	235	platform_driver_unregister(&snd_mpu401_driver);
	236	}
	237
1da177e4 LT	238	static int __init alsa_card_mpu401_init(void)
1da177e4 LT	239	{
f301ae6a	240	int i, err;
1da177e4	241
b3fe9512 TI	242	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
	243	return err;
	244
8278ca8f	245	for (i = 0; i < SNDRV_CARDS; i++) {
b3fe9512	246	struct platform_device *device;
8278ca8f TI	247	if (! enable[i])
8278ca8f TI	248	continue;
1da177e4	249	#ifdef CONFIG_PNP
b3fe9512	250	if (pnp[i])
1da177e4 LT	251	continue;
1da177e4 LT	252	#endif
b3fe9512 TI	253	device = platform_device_register_simple(SND_MPU401_DRIVER,
b3fe9512 TI	254	i, NULL, 0);
a182ee98 RH	255	if (IS_ERR(device))
a182ee98 RH	256	continue;
7152447d RH	257	if (!platform_get_drvdata(device)) {
	258	platform_device_unregister(device);
	259	continue;
	260	}
f7a9275d	261	platform_devices[i] = device;
f301ae6a	262	snd_mpu401_devices++;
1da177e4	263	}
f301ae6a BH	264	err = pnp_register_driver(&snd_mpu401_pnp_driver);
f301ae6a BH	265	if (!err)
1da177e4	266	pnp_registered = 1;
1da177e4	267
f301ae6a	268	if (!snd_mpu401_devices) {
1da177e4 LT	269	#ifdef MODULE
	270	printk(KERN_ERR "MPU-401 device not found or device busy\n");
	271	#endif
a182ee98 RH	272	snd_mpu401_unregister_all();
a182ee98 RH	273	return -ENODEV;
1da177e4 LT	274	}
	275	return 0;
	276	}
	277
	278	static void __exit alsa_card_mpu401_exit(void)
	279	{
f7a9275d	280	snd_mpu401_unregister_all();
1da177e4 LT	281	}
	282
	283	module_init(alsa_card_mpu401_init)
	284	module_exit(alsa_card_mpu401_exit)