[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@perex.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@perex.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 */
static int uart_enter[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};

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.");
module_param_array(uart_enter, bool, NULL, 0444);
MODULE_PARM_DESC(uart_enter, "Issue UART_ENTER command at open.");

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;

	if (!uart_enter[dev])
		snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n");

	*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");
	}

	err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
				  irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0,
				  NULL);
	if (err < 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 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	/*
1da177e4 LT	2	* Driver for generic MPU-401 boards (UART mode only)
c1017a4c	3	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	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
c1017a4c	33	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4 LT	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 */
8f7ba051	45	static int uart_enter[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
1da177e4 LT	46
	47	module_param_array(index, int, NULL, 0444);
	48	MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
	49	module_param_array(id, charp, NULL, 0444);
	50	MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
	51	module_param_array(enable, bool, NULL, 0444);
	52	MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
	53	#ifdef CONFIG_PNP
	54	module_param_array(pnp, bool, NULL, 0444);
	55	MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
	56	#endif
	57	module_param_array(port, long, NULL, 0444);
	58	MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
	59	module_param_array(irq, int, NULL, 0444);
	60	MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
8f7ba051 TI	61	module_param_array(uart_enter, bool, NULL, 0444);
8f7ba051 TI	62	MODULE_PARM_DESC(uart_enter, "Issue UART_ENTER command at open.");
1da177e4	63
f7a9275d	64	static struct platform_device *platform_devices[SNDRV_CARDS];
f301ae6a BH	65	static int pnp_registered;
f301ae6a BH	66	static unsigned int snd_mpu401_devices;
1da177e4	67
e1fad17b	68	static int snd_mpu401_create(int dev, struct snd_card **rcard)
1da177e4	69	{
e1fad17b	70	struct snd_card *card;
1da177e4 LT	71	int err;
1da177e4 LT	72
c1099fcb CL	73	if (!uart_enter[dev])
	74	snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n");
	75
1da177e4 LT	76	*rcard = NULL;
	77	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
	78	if (card == NULL)
	79	return -ENOMEM;
	80	strcpy(card->driver, "MPU-401 UART");
	81	strcpy(card->shortname, card->driver);
	82	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
	83	if (irq[dev] >= 0) {
	84	sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
	85	} else {
	86	strcat(card->longname, "polled");
	87	}
	88
c1099fcb	89	err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
8f7ba051 TI	90	irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0,
	91	NULL);
	92	if (err < 0) {
1da177e4	93	printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
16dab54b	94	goto _err;
1da177e4	95	}
16dab54b	96
1da177e4 LT	97	*rcard = card;
1da177e4 LT	98	return 0;
16dab54b TI	99
	100	_err:
	101	snd_card_free(card);
	102	return err;
1da177e4 LT	103	}
1da177e4 LT	104
b3fe9512	105	static int __devinit snd_mpu401_probe(struct platform_device *devptr)
1da177e4	106	{
b3fe9512 TI	107	int dev = devptr->id;
	108	int err;
	109	struct snd_card *card;
	110
1da177e4 LT	111	if (port[dev] == SNDRV_AUTO_PORT) {
	112	snd_printk(KERN_ERR "specify port\n");
	113	return -EINVAL;
	114	}
	115	if (irq[dev] == SNDRV_AUTO_IRQ) {
	116	snd_printk(KERN_ERR "specify or disable IRQ\n");
	117	return -EINVAL;
	118	}
b3fe9512 TI	119	err = snd_mpu401_create(dev, &card);
	120	if (err < 0)
	121	return err;
	122	snd_card_set_dev(card, &devptr->dev);
	123	if ((err = snd_card_register(card)) < 0) {
	124	snd_card_free(card);
	125	return err;
	126	}
	127	platform_set_drvdata(devptr, card);
	128	return 0;
1da177e4 LT	129	}
1da177e4 LT	130
b3fe9512 TI	131	static int __devexit snd_mpu401_remove(struct platform_device *devptr)
	132	{
	133	snd_card_free(platform_get_drvdata(devptr));
	134	platform_set_drvdata(devptr, NULL);
	135	return 0;
	136	}
	137
	138	#define SND_MPU401_DRIVER "snd_mpu401"
	139
	140	static struct platform_driver snd_mpu401_driver = {
	141	.probe = snd_mpu401_probe,
	142	.remove = __devexit_p(snd_mpu401_remove),
	143	.driver = {
	144	.name = SND_MPU401_DRIVER
	145	},
	146	};
	147
	148
1da177e4 LT	149	#ifdef CONFIG_PNP
	150
	151	#define IO_EXTENT 2
	152
	153	static struct pnp_device_id snd_mpu401_pnpids[] = {
	154	{ .id = "PNPb006" },
	155	{ .id = "" }
	156	};
	157
	158	MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
	159
fad43488	160	static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device,
1da177e4 LT	161	const struct pnp_device_id *id)
	162	{
	163	if (!pnp_port_valid(device, 0) \|\|
	164	pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
	165	snd_printk(KERN_ERR "no PnP port\n");
	166	return -ENODEV;
	167	}
	168	if (pnp_port_len(device, 0) < IO_EXTENT) {
aa0a2ddc GKH	169	snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
	170	(unsigned long long)pnp_port_len(device, 0),
	171	IO_EXTENT);
1da177e4 LT	172	return -ENODEV;
	173	}
	174	port[dev] = pnp_port_start(device, 0);
	175
	176	if (!pnp_irq_valid(device, 0) \|\|
	177	pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
	178	snd_printk(KERN_WARNING "no PnP irq, using polling\n");
	179	irq[dev] = -1;
	180	} else {
	181	irq[dev] = pnp_irq(device, 0);
	182	}
	183	return 0;
	184	}
	185
	186	static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
	187	const struct pnp_device_id *id)
	188	{
	189	static int dev;
e1fad17b	190	struct snd_card *card;
1da177e4 LT	191	int err;
	192
	193	for ( ; dev < SNDRV_CARDS; ++dev) {
	194	if (!enable[dev] \|\| !pnp[dev])
	195	continue;
	196	err = snd_mpu401_pnp(dev, pnp_dev, id);
	197	if (err < 0)
	198	return err;
	199	err = snd_mpu401_create(dev, &card);
	200	if (err < 0)
	201	return err;
b3fe9512 TI	202	if ((err = snd_card_register(card)) < 0) {
	203	snd_card_free(card);
	204	return err;
	205	}
1da177e4 LT	206	snd_card_set_dev(card, &pnp_dev->dev);
1da177e4 LT	207	pnp_set_drvdata(pnp_dev, card);
f301ae6a	208	snd_mpu401_devices++;
1da177e4 LT	209	++dev;
	210	return 0;
	211	}
	212	return -ENODEV;
	213	}
	214
	215	static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
	216	{
e1fad17b	217	struct snd_card card = (struct snd_card ) pnp_get_drvdata(dev);
1da177e4 LT	218
1da177e4 LT	219	snd_card_disconnect(card);
2b29b13c	220	snd_card_free_when_closed(card);
1da177e4 LT	221	}
	222
	223	static struct pnp_driver snd_mpu401_pnp_driver = {
	224	.name = "mpu401",
	225	.id_table = snd_mpu401_pnpids,
	226	.probe = snd_mpu401_pnp_probe,
	227	.remove = __devexit_p(snd_mpu401_pnp_remove),
	228	};
	229	#else
	230	static struct pnp_driver snd_mpu401_pnp_driver;
	231	#endif
	232
c12aad6e	233	static void snd_mpu401_unregister_all(void)
f7a9275d CL	234	{
	235	int i;
	236
	237	if (pnp_registered)
	238	pnp_unregister_driver(&snd_mpu401_pnp_driver);
	239	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
	240	platform_device_unregister(platform_devices[i]);
	241	platform_driver_unregister(&snd_mpu401_driver);
	242	}
	243
1da177e4 LT	244	static int __init alsa_card_mpu401_init(void)
1da177e4 LT	245	{
f301ae6a	246	int i, err;
1da177e4	247
b3fe9512 TI	248	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
	249	return err;
	250
8278ca8f	251	for (i = 0; i < SNDRV_CARDS; i++) {
b3fe9512	252	struct platform_device *device;
8278ca8f TI	253	if (! enable[i])
8278ca8f TI	254	continue;
1da177e4	255	#ifdef CONFIG_PNP
b3fe9512	256	if (pnp[i])
1da177e4 LT	257	continue;
1da177e4 LT	258	#endif
b3fe9512 TI	259	device = platform_device_register_simple(SND_MPU401_DRIVER,
b3fe9512 TI	260	i, NULL, 0);
a182ee98 RH	261	if (IS_ERR(device))
a182ee98 RH	262	continue;
7152447d RH	263	if (!platform_get_drvdata(device)) {
	264	platform_device_unregister(device);
	265	continue;
	266	}
f7a9275d	267	platform_devices[i] = device;
f301ae6a	268	snd_mpu401_devices++;
1da177e4	269	}
f301ae6a BH	270	err = pnp_register_driver(&snd_mpu401_pnp_driver);
f301ae6a BH	271	if (!err)
1da177e4	272	pnp_registered = 1;
1da177e4	273
f301ae6a	274	if (!snd_mpu401_devices) {
1da177e4 LT	275	#ifdef MODULE
	276	printk(KERN_ERR "MPU-401 device not found or device busy\n");
	277	#endif
a182ee98 RH	278	snd_mpu401_unregister_all();
a182ee98 RH	279	return -ENODEV;
1da177e4 LT	280	}
	281	return 0;
	282	}
	283
	284	static void __exit alsa_card_mpu401_exit(void)
	285	{
f7a9275d	286	snd_mpu401_unregister_all();
1da177e4 LT	287	}
	288
	289	module_init(alsa_card_mpu401_init)
	290	module_exit(alsa_card_mpu401_exit)