[GitHub/mt8127/android_kernel_alcatel_ttab.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 <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;
	err = snd_card_create(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], 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
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>
1da177e4 LT	27	#include <linux/moduleparam.h>
	28	#include <sound/core.h>
	29	#include <sound/mpu401.h>
	30	#include <sound/initval.h>
	31
c1017a4c	32	MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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 */
	38	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
	39	#ifdef CONFIG_PNP
	40	static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
	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 */
8f7ba051	44	static int 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
	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.");
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
e1fad17b	67	static int snd_mpu401_create(int dev, struct snd_card **rcard)
1da177e4	68	{
e1fad17b	69	struct snd_card *card;
1da177e4 LT	70	int err;
1da177e4 LT	71
c1099fcb CL	72	if (!uart_enter[dev])
	73	snd_printk(KERN_ERR "the uart_enter option is obsolete; remove it\n");
	74
1da177e4	75	*rcard = NULL;
bd7dd77c TI	76	err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
	77	if (err < 0)
	78	return err;
1da177e4 LT	79	strcpy(card->driver, "MPU-401 UART");
	80	strcpy(card->shortname, card->driver);
	81	sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
	82	if (irq[dev] >= 0) {
	83	sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
	84	} else {
	85	strcat(card->longname, "polled");
	86	}
	87
c1099fcb	88	err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, port[dev], 0,
8f7ba051 TI	89	irq[dev], irq[dev] >= 0 ? IRQF_DISABLED : 0,
	90	NULL);
	91	if (err < 0) {
1da177e4	92	printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
16dab54b	93	goto _err;
1da177e4	94	}
16dab54b	95
1da177e4 LT	96	*rcard = card;
1da177e4 LT	97	return 0;
16dab54b TI	98
	99	_err:
	100	snd_card_free(card);
	101	return err;
1da177e4 LT	102	}
1da177e4 LT	103
b3fe9512	104	static int __devinit snd_mpu401_probe(struct platform_device *devptr)
1da177e4	105	{
b3fe9512 TI	106	int dev = devptr->id;
	107	int err;
	108	struct snd_card *card;
	109
1da177e4 LT	110	if (port[dev] == SNDRV_AUTO_PORT) {
	111	snd_printk(KERN_ERR "specify port\n");
	112	return -EINVAL;
	113	}
	114	if (irq[dev] == SNDRV_AUTO_IRQ) {
	115	snd_printk(KERN_ERR "specify or disable IRQ\n");
	116	return -EINVAL;
	117	}
b3fe9512 TI	118	err = snd_mpu401_create(dev, &card);
	119	if (err < 0)
	120	return err;
	121	snd_card_set_dev(card, &devptr->dev);
	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
b3fe9512 TI	130	static int __devexit snd_mpu401_remove(struct platform_device *devptr)
	131	{
	132	snd_card_free(platform_get_drvdata(devptr));
	133	platform_set_drvdata(devptr, NULL);
	134	return 0;
	135	}
	136
	137	#define SND_MPU401_DRIVER "snd_mpu401"
	138
	139	static struct platform_driver snd_mpu401_driver = {
	140	.probe = snd_mpu401_probe,
	141	.remove = __devexit_p(snd_mpu401_remove),
	142	.driver = {
	143	.name = SND_MPU401_DRIVER
	144	},
	145	};
	146
	147
1da177e4 LT	148	#ifdef CONFIG_PNP
	149
	150	#define IO_EXTENT 2
	151
	152	static struct pnp_device_id snd_mpu401_pnpids[] = {
	153	{ .id = "PNPb006" },
	154	{ .id = "" }
	155	};
	156
	157	MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
	158
fad43488	159	static int __devinit snd_mpu401_pnp(int dev, struct pnp_dev *device,
1da177e4 LT	160	const struct pnp_device_id *id)
	161	{
	162	if (!pnp_port_valid(device, 0) \|\|
	163	pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
	164	snd_printk(KERN_ERR "no PnP port\n");
	165	return -ENODEV;
	166	}
	167	if (pnp_port_len(device, 0) < IO_EXTENT) {
aa0a2ddc GKH	168	snd_printk(KERN_ERR "PnP port length is %llu, expected %d\n",
	169	(unsigned long long)pnp_port_len(device, 0),
	170	IO_EXTENT);
1da177e4 LT	171	return -ENODEV;
	172	}
	173	port[dev] = pnp_port_start(device, 0);
	174
	175	if (!pnp_irq_valid(device, 0) \|\|
	176	pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
	177	snd_printk(KERN_WARNING "no PnP irq, using polling\n");
	178	irq[dev] = -1;
	179	} else {
	180	irq[dev] = pnp_irq(device, 0);
	181	}
	182	return 0;
	183	}
	184
	185	static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
	186	const struct pnp_device_id *id)
	187	{
	188	static int dev;
e1fad17b	189	struct snd_card *card;
1da177e4 LT	190	int err;
	191
	192	for ( ; dev < SNDRV_CARDS; ++dev) {
	193	if (!enable[dev] \|\| !pnp[dev])
	194	continue;
	195	err = snd_mpu401_pnp(dev, pnp_dev, id);
	196	if (err < 0)
	197	return err;
	198	err = snd_mpu401_create(dev, &card);
	199	if (err < 0)
	200	return err;
b3fe9512 TI	201	if ((err = snd_card_register(card)) < 0) {
	202	snd_card_free(card);
	203	return err;
	204	}
1da177e4 LT	205	snd_card_set_dev(card, &pnp_dev->dev);
1da177e4 LT	206	pnp_set_drvdata(pnp_dev, card);
f301ae6a	207	snd_mpu401_devices++;
1da177e4 LT	208	++dev;
	209	return 0;
	210	}
	211	return -ENODEV;
	212	}
	213
	214	static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
	215	{
e1fad17b	216	struct snd_card card = (struct snd_card ) pnp_get_drvdata(dev);
1da177e4 LT	217
1da177e4 LT	218	snd_card_disconnect(card);
2b29b13c	219	snd_card_free_when_closed(card);
1da177e4 LT	220	}
	221
	222	static struct pnp_driver snd_mpu401_pnp_driver = {
	223	.name = "mpu401",
	224	.id_table = snd_mpu401_pnpids,
	225	.probe = snd_mpu401_pnp_probe,
	226	.remove = __devexit_p(snd_mpu401_pnp_remove),
	227	};
	228	#else
	229	static struct pnp_driver snd_mpu401_pnp_driver;
	230	#endif
	231
c12aad6e	232	static void snd_mpu401_unregister_all(void)
f7a9275d CL	233	{
	234	int i;
	235
	236	if (pnp_registered)
	237	pnp_unregister_driver(&snd_mpu401_pnp_driver);
	238	for (i = 0; i < ARRAY_SIZE(platform_devices); ++i)
	239	platform_device_unregister(platform_devices[i]);
	240	platform_driver_unregister(&snd_mpu401_driver);
	241	}
	242
1da177e4 LT	243	static int __init alsa_card_mpu401_init(void)
1da177e4 LT	244	{
f301ae6a	245	int i, err;
1da177e4	246
b3fe9512 TI	247	if ((err = platform_driver_register(&snd_mpu401_driver)) < 0)
	248	return err;
	249
8278ca8f	250	for (i = 0; i < SNDRV_CARDS; i++) {
b3fe9512	251	struct platform_device *device;
8278ca8f TI	252	if (! enable[i])
8278ca8f TI	253	continue;
1da177e4	254	#ifdef CONFIG_PNP
b3fe9512	255	if (pnp[i])
1da177e4 LT	256	continue;
1da177e4 LT	257	#endif
b3fe9512 TI	258	device = platform_device_register_simple(SND_MPU401_DRIVER,
b3fe9512 TI	259	i, NULL, 0);
a182ee98 RH	260	if (IS_ERR(device))
a182ee98 RH	261	continue;
7152447d RH	262	if (!platform_get_drvdata(device)) {
	263	platform_device_unregister(device);
	264	continue;
	265	}
f7a9275d	266	platform_devices[i] = device;
f301ae6a	267	snd_mpu401_devices++;
1da177e4	268	}
f301ae6a BH	269	err = pnp_register_driver(&snd_mpu401_pnp_driver);
f301ae6a BH	270	if (!err)
1da177e4	271	pnp_registered = 1;
1da177e4	272
f301ae6a	273	if (!snd_mpu401_devices) {
1da177e4 LT	274	#ifdef MODULE
	275	printk(KERN_ERR "MPU-401 device not found or device busy\n");
	276	#endif
a182ee98 RH	277	snd_mpu401_unregister_all();
a182ee98 RH	278	return -ENODEV;
1da177e4 LT	279	}
	280	return 0;
	281	}
	282
	283	static void __exit alsa_card_mpu401_exit(void)
	284	{
f7a9275d	285	snd_mpu401_unregister_all();
1da177e4 LT	286	}
	287
	288	module_init(alsa_card_mpu401_init)
	289	module_exit(alsa_card_mpu401_exit)