[linux.git] / sound / drivers / mpu401 / mpu401.c

/*
 *  Driver for generic MPU-401 boards (UART mode only)
 *  Copyright (c) by Jaroslav Kysela <[email protected]>
 *  Copyright (c) 2004 by Castet Matthieu <[email protected]>
 *
 *
 *   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 <linux/init.h>
#include <linux/pnp.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/mpu401.h>
#include <sound/initval.h>

MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
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 bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
#ifdef CONFIG_PNP
static bool 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 bool 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_hw_array(port, long, ioport, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
module_param_hw_array(irq, int, irq, 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(struct device *devptr, 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;
	err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
			   0, &card);
	if (err < 0)
		return err;
	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], 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 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(&devptr->dev, dev, &card);
	if (err < 0)
		return err;
	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	platform_set_drvdata(devptr, card);
	return 0;
}

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

#define SND_MPU401_DRIVER	"snd_mpu401"

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


#ifdef CONFIG_PNP

#define IO_EXTENT 2

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

MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);

static int 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 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(&pnp_dev->dev, dev, &card);
		if (err < 0)
			return err;
		if ((err = snd_card_register(card)) < 0) {
			snd_card_free(card);
			return err;
		}
		pnp_set_drvdata(pnp_dev, card);
		snd_mpu401_devices++;
		++dev;
		return 0;
	}
	return -ENODEV;
}

static void 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 = 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 <[email protected]>
1da177e4 LT	4	* Copyright (c) 2004 by Castet Matthieu <[email protected]>
	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
1da177e4 LT	23	#include <linux/init.h>
1da177e4 LT	24	#include <linux/pnp.h>
b3fe9512 TI	25	#include <linux/err.h>
b3fe9512 TI	26	#include <linux/platform_device.h>
65a77217	27	#include <linux/module.h>
1da177e4 LT	28	#include <sound/core.h>
	29	#include <sound/mpu401.h>
	30	#include <sound/initval.h>
	31
c1017a4c	32	MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
1da177e4 LT	33	MODULE_DESCRIPTION("MPU-401 UART");
	34	MODULE_LICENSE("GPL");
	35
	36	static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
	37	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
a67ff6a5	38	static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
1da177e4	39	#ifdef CONFIG_PNP
a67ff6a5	40	static bool pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
1da177e4 LT	41	#endif
	42	static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */
	43	static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */
a67ff6a5	44	static bool uart_enter[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
1da177e4 LT	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
b11ce420	56	module_param_hw_array(port, long, ioport, NULL, 0444);
1da177e4	57	MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
b11ce420	58	module_param_hw_array(irq, int, irq, NULL, 0444);
1da177e4	59	MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
8f7ba051 TI	60	module_param_array(uart_enter, bool, NULL, 0444);
8f7ba051 TI	61	MODULE_PARM_DESC(uart_enter, "Issue UART_ENTER command at open.");
1da177e4	62
f7a9275d	63	static struct platform_device *platform_devices[SNDRV_CARDS];
f301ae6a BH	64	static int pnp_registered;
f301ae6a BH	65	static unsigned int snd_mpu401_devices;
1da177e4	66
5872f3f6 TI	67	static int snd_mpu401_create(struct device *devptr, int dev,
5872f3f6 TI	68	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	76	*rcard = NULL;
5872f3f6 TI	77	err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
5872f3f6 TI	78	0, &card);
bd7dd77c TI	79	if (err < 0)
bd7dd77c TI	80	return err;
1da177e4 LT	81	strcpy(card->driver, "MPU-401 UART");
	82	strcpy(card->shortname, card->driver);
	83	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
	84	if (irq[dev] >= 0) {
	85	sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
	86	} else {
	87	strcat(card->longname, "polled");
	88	}
	89
c1099fcb	90	err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
dba8b469	91	irq[dev], NULL);
8f7ba051	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
fbbb01a1	105	static int 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	}
5872f3f6	119	err = snd_mpu401_create(&devptr->dev, dev, &card);
b3fe9512 TI	120	if (err < 0)
b3fe9512 TI	121	return err;
b3fe9512 TI	122	if ((err = snd_card_register(card)) < 0) {
	123	snd_card_free(card);
	124	return err;
	125	}
	126	platform_set_drvdata(devptr, card);
	127	return 0;
1da177e4 LT	128	}
1da177e4 LT	129
fbbb01a1	130	static int snd_mpu401_remove(struct platform_device *devptr)
b3fe9512 TI	131	{
b3fe9512 TI	132	snd_card_free(platform_get_drvdata(devptr));
b3fe9512 TI	133	return 0;
	134	}
	135
	136	#define SND_MPU401_DRIVER "snd_mpu401"
	137
	138	static struct platform_driver snd_mpu401_driver = {
	139	.probe = snd_mpu401_probe,
fbbb01a1	140	.remove = snd_mpu401_remove,
b3fe9512	141	.driver = {
8bf01d8a	142	.name = SND_MPU401_DRIVER,
b3fe9512 TI	143	},
	144	};
	145
	146
1da177e4 LT	147	#ifdef CONFIG_PNP
	148
	149	#define IO_EXTENT 2
	150
1491c68a	151	static const struct pnp_device_id snd_mpu401_pnpids[] = {
1da177e4 LT	152	{ .id = "PNPb006" },
	153	{ .id = "" }
	154	};
	155
	156	MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
	157
fbbb01a1 BP	158	static int snd_mpu401_pnp(int dev, struct pnp_dev *device,
fbbb01a1 BP	159	const struct pnp_device_id *id)
1da177e4 LT	160	{
	161	if (!pnp_port_valid(device, 0) \|\|
	162	pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
	163	snd_printk(KERN_ERR "no PnP port\n");
	164	return -ENODEV;
	165	}
	166	if (pnp_port_len(device, 0) < IO_EXTENT) {
aa0a2ddc GKH	167	snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
	168	(unsigned long long)pnp_port_len(device, 0),
	169	IO_EXTENT);
1da177e4 LT	170	return -ENODEV;
	171	}
	172	port[dev] = pnp_port_start(device, 0);
	173
	174	if (!pnp_irq_valid(device, 0) \|\|
	175	pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
	176	snd_printk(KERN_WARNING "no PnP irq, using polling\n");
	177	irq[dev] = -1;
	178	} else {
	179	irq[dev] = pnp_irq(device, 0);
	180	}
	181	return 0;
	182	}
	183
fbbb01a1 BP	184	static int snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
fbbb01a1 BP	185	const struct pnp_device_id *id)
1da177e4 LT	186	{
1da177e4 LT	187	static int dev;
e1fad17b	188	struct snd_card *card;
1da177e4 LT	189	int err;
	190
	191	for ( ; dev < SNDRV_CARDS; ++dev) {
	192	if (!enable[dev] \|\| !pnp[dev])
	193	continue;
	194	err = snd_mpu401_pnp(dev, pnp_dev, id);
	195	if (err < 0)
	196	return err;
5872f3f6	197	err = snd_mpu401_create(&pnp_dev->dev, dev, &card);
1da177e4 LT	198	if (err < 0)
1da177e4 LT	199	return err;
b3fe9512 TI	200	if ((err = snd_card_register(card)) < 0) {
	201	snd_card_free(card);
	202	return err;
	203	}
1da177e4	204	pnp_set_drvdata(pnp_dev, card);
f301ae6a	205	snd_mpu401_devices++;
1da177e4 LT	206	++dev;
	207	return 0;
	208	}
	209	return -ENODEV;
	210	}
	211
fbbb01a1	212	static void snd_mpu401_pnp_remove(struct pnp_dev *dev)
1da177e4	213	{
e1fad17b	214	struct snd_card card = (struct snd_card ) pnp_get_drvdata(dev);
1da177e4 LT	215
1da177e4 LT	216	snd_card_disconnect(card);
2b29b13c	217	snd_card_free_when_closed(card);
1da177e4 LT	218	}
	219
	220	static struct pnp_driver snd_mpu401_pnp_driver = {
	221	.name = "mpu401",
	222	.id_table = snd_mpu401_pnpids,
	223	.probe = snd_mpu401_pnp_probe,
fbbb01a1	224	.remove = snd_mpu401_pnp_remove,
1da177e4 LT	225	};
	226	#else
	227	static struct pnp_driver snd_mpu401_pnp_driver;
	228	#endif
	229
c12aad6e	230	static void snd_mpu401_unregister_all(void)
f7a9275d CL	231	{
	232	int i;
	233
	234	if (pnp_registered)
	235	pnp_unregister_driver(&snd_mpu401_pnp_driver);
	236	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
	237	platform_device_unregister(platform_devices[i]);
	238	platform_driver_unregister(&snd_mpu401_driver);
	239	}
	240
1da177e4 LT	241	static int __init alsa_card_mpu401_init(void)
1da177e4 LT	242	{
f301ae6a	243	int i, err;
1da177e4	244
b3fe9512 TI	245	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
	246	return err;
	247
8278ca8f	248	for (i = 0; i < SNDRV_CARDS; i++) {
b3fe9512	249	struct platform_device *device;
8278ca8f TI	250	if (! enable[i])
8278ca8f TI	251	continue;
1da177e4	252	#ifdef CONFIG_PNP
b3fe9512	253	if (pnp[i])
1da177e4 LT	254	continue;
1da177e4 LT	255	#endif
b3fe9512 TI	256	device = platform_device_register_simple(SND_MPU401_DRIVER,
b3fe9512 TI	257	i, NULL, 0);
a182ee98 RH	258	if (IS_ERR(device))
a182ee98 RH	259	continue;
7152447d RH	260	if (!platform_get_drvdata(device)) {
	261	platform_device_unregister(device);
	262	continue;
	263	}
f7a9275d	264	platform_devices[i] = device;
f301ae6a	265	snd_mpu401_devices++;
1da177e4	266	}
f301ae6a BH	267	err = pnp_register_driver(&snd_mpu401_pnp_driver);
f301ae6a BH	268	if (!err)
1da177e4	269	pnp_registered = 1;
1da177e4	270
f301ae6a	271	if (!snd_mpu401_devices) {
1da177e4 LT	272	#ifdef MODULE
	273	printk(KERN_ERR "MPU-401 device not found or device busy\n");
	274	#endif
a182ee98 RH	275	snd_mpu401_unregister_all();
a182ee98 RH	276	return -ENODEV;
1da177e4 LT	277	}
	278	return 0;
	279	}
	280
	281	static void __exit alsa_card_mpu401_exit(void)
	282	{
f7a9275d	283	snd_mpu401_unregister_all();
1da177e4 LT	284	}
	285
	286	module_init(alsa_card_mpu401_init)
	287	module_exit(alsa_card_mpu401_exit)