sound/drivers/mpu401/mpu401.c - third_party/linux - Git at Google

 /*
  *  Driver for generic MPU-401 boards (UART mode only)
  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
  *
  *  ACPI PnP Copyright (c) 2004 by Clemens Ladisch <clemens@ladisch.de>
  *  based on 8250_acpi.c
  *  Copyright (c) 2002-2003 Matthew Wilcox for Hewlett-Packard
  *  Copyright (C) 2004 Hewlett-Packard Co
  *       Bjorn Helgaas <bjorn.helgaas@hp.com>
  *
  *
  *   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>
 #ifdef CONFIG_ACPI_BUS
 #include <linux/acpi.h>
 #endif
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include <sound/mpu401.h>
 #include <sound/initval.h>

 #ifdef CONFIG_ACPI_BUS
 #define USE_ACPI_PNP
 #endif

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

 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
 #ifdef USE_ACPI_PNP
 static int acpipnp[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 USE_ACPI_PNP
 module_param_array(acpipnp, bool, NULL, 0444);
 MODULE_PARM_DESC(acpipnp, "ACPI 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.");

 #ifndef CONFIG_ACPI_BUS
 struct acpi_device;
 #endif

 static snd_card_t *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
 static int cards;

 #ifdef USE_ACPI_PNP

 static int acpi_driver_registered;

 struct mpu401_resources {
 	unsigned long port;
 	int irq;
 };

 static acpi_status __devinit snd_mpu401_acpi_resource(struct acpi_resource *res,
 						      void *data)
 {
 	struct mpu401_resources *resources = (struct mpu401_resources *)data;

 	if (res->id == ACPI_RSTYPE_IRQ) {
 		if (res->data.irq.number_of_interrupts > 0) {
 			resources->irq = acpi_register_gsi(res->data.irq.interrupts[0],
 							   res->data.irq.edge_level,
 							   res->data.irq.active_high_low);
 		}
 	} else if (res->id == ACPI_RSTYPE_IO) {
 		if (res->data.io.range_length >= 2) {
 			resources->port = res->data.io.min_base_address;
 		}
 	}
 	return AE_OK;
 }

 static int __devinit snd_mpu401_acpi_pnp(int dev, struct acpi_device *device)
 {
 	struct mpu401_resources res;
 	acpi_status status;

 	res.port = SNDRV_AUTO_PORT;
 	res.irq = SNDRV_AUTO_IRQ;
 	status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
 				     snd_mpu401_acpi_resource, &res);
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 	if (res.port == SNDRV_AUTO_PORT || res.irq == SNDRV_AUTO_IRQ) {
 		snd_printk(KERN_ERR "no port or irq in %s _CRS\n",
 			   acpi_device_bid(device));
 		return -ENODEV;
 	}
 	port[dev] = res.port;
 	irq[dev] = res.irq;
 	return 0;
 }

 #endif /* USE_ACPI_PNP */

 static int __devinit snd_card_mpu401_probe(int dev, struct acpi_device *device)
 {
 	snd_card_t *card;
 	int err;

 #ifdef USE_ACPI_PNP
 	if (!device) {
 #endif
 		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 port\n");
 			return -EINVAL;
 		}
 #ifdef USE_ACPI_PNP
 	}
 #endif

 #ifdef USE_ACPI_PNP
 	if (device && (err = snd_mpu401_acpi_pnp(dev, device)) < 0)
 		return err;
 #endif

 	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 0x%lx, ", card->shortname, port[dev]);
 	if (irq[dev] >= 0) {
 		sprintf(card->longname + strlen(card->longname), "IRQ %d", irq[dev]);
 	} else {
 		strcat(card->longname, "polled");
 	}
 #ifdef USE_ACPI_PNP
 	if (device) {
 		strcat(card->longname, ", ACPI id ");
 		strlcat(card->longname, acpi_device_bid(device), sizeof(card->longname));
 	}
 #endif
 	if (snd_mpu401_uart_new(card, 0,
 				MPU401_HW_MPU401,
 				port[dev], 0,
 				irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL) < 0) {
 		printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
 		snd_card_free(card);
 		return -ENODEV;
 	}
 	if ((err = snd_card_register(card)) < 0) {
 		snd_card_free(card);
 		return err;
 	}
 #ifdef USE_ACPI_PNP
 	if (device)
 		acpi_driver_data(device) = card;
 	else
 #endif
 		snd_mpu401_legacy_cards[dev] = card;
 	++cards;
 	return 0;
 }

 #ifdef USE_ACPI_PNP

 static int __devinit snd_mpu401_acpi_add(struct acpi_device *device)
 {
 	static int dev;
 	int err;

 	for ( ; dev < SNDRV_CARDS; ++dev) {
 		if (!enable[dev] || !acpipnp[dev])
 			continue;
 		err = snd_card_mpu401_probe(dev, device);
 		if (err < 0)
 			return err;
 		++dev;
 		return 0;
 	}
 	return -ENODEV;
 }

 static int __devexit snd_mpu401_acpi_remove(struct acpi_device *device,
 					    int type)
 {
 	snd_card_t *card;

 	if (!device)
 		return -EINVAL;
 	card = (snd_card_t *)acpi_driver_data(device);
 	if (!card)
 		return -EINVAL;

 	snd_card_disconnect(card);
 	snd_card_free_in_thread(card);
 	acpi_driver_data(device) = NULL;
 	return 0;
 }

 static struct acpi_driver snd_mpu401_acpi_driver = {
 	.name = "MPU-401 Driver",
 	.class = "mpu401",
 	.ids = "PNPB006",
 	.ops = {
 		.add = snd_mpu401_acpi_add,
 		.remove = __devexit_p(snd_mpu401_acpi_remove),
 	},
 };

 #endif /* USE_ACPI_PNP */

 static int __init alsa_card_mpu401_init(void)
 {
 	int dev;

 #ifdef USE_ACPI_PNP
 	if (acpi_bus_register_driver(&snd_mpu401_acpi_driver) >= 0)
 		acpi_driver_registered = 1;
 #endif
 	for (dev = 0; dev < SNDRV_CARDS; dev++) {
 		if (!enable[dev])
 			continue;
 #ifdef USE_ACPI_PNP
 		if (acpipnp[dev] && acpi_driver_registered)
 			continue;
 #endif
 		snd_card_mpu401_probe(dev, NULL);
 	}
 	if (!cards) {
 #ifdef MODULE
 		printk(KERN_ERR "MPU-401 device not found or device busy\n");
 #endif
 #ifdef USE_ACPI_PNP
 		if (acpi_driver_registered)
 			acpi_bus_unregister_driver(&snd_mpu401_acpi_driver);
 #endif
 		return -ENODEV;
 	}
 	return 0;
 }

 static void __exit alsa_card_mpu401_exit(void)
 {
 	int idx;

 #ifdef USE_ACPI_PNP
 	if (acpi_driver_registered)
 		acpi_bus_unregister_driver(&snd_mpu401_acpi_driver);
 #endif
 	for (idx = 0; idx < SNDRV_CARDS; idx++)
 		snd_card_free(snd_mpu401_legacy_cards[idx]);
 }

 module_init(alsa_card_mpu401_init)
 module_exit(alsa_card_mpu401_exit)
	/*
	* Driver for generic MPU-401 boards (UART mode only)
	* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
	*
	* ACPI PnP Copyright (c) 2004 by Clemens Ladisch <clemens@ladisch.de>
	* based on 8250_acpi.c
	* Copyright (c) 2002-2003 Matthew Wilcox for Hewlett-Packard
	* Copyright (C) 2004 Hewlett-Packard Co
	* Bjorn Helgaas <bjorn.helgaas@hp.com>
	*
	*
	* 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>
	#ifdef CONFIG_ACPI_BUS
	#include <linux/acpi.h>
	#endif
	#include <linux/moduleparam.h>
	#include <sound/core.h>
	#include <sound/mpu401.h>
	#include <sound/initval.h>

	#ifdef CONFIG_ACPI_BUS
	#define USE_ACPI_PNP
	#endif

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

	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
	static char id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; / ID for this card */
	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
	#ifdef USE_ACPI_PNP
	static int acpipnp[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 USE_ACPI_PNP
	module_param_array(acpipnp, bool, NULL, 0444);
	MODULE_PARM_DESC(acpipnp, "ACPI 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.");

	#ifndef CONFIG_ACPI_BUS
	struct acpi_device;
	#endif

	static snd_card_t *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
	static int cards;

	#ifdef USE_ACPI_PNP

	static int acpi_driver_registered;

	struct mpu401_resources {
	unsigned long port;
	int irq;
	};

	static acpi_status __devinit snd_mpu401_acpi_resource(struct acpi_resource *res,
	void *data)
	{
	struct mpu401_resources resources = (struct mpu401_resources )data;

	if (res->id == ACPI_RSTYPE_IRQ) {
	if (res->data.irq.number_of_interrupts > 0) {
	resources->irq = acpi_register_gsi(res->data.irq.interrupts[0],
	res->data.irq.edge_level,
	res->data.irq.active_high_low);
	}
	} else if (res->id == ACPI_RSTYPE_IO) {
	if (res->data.io.range_length >= 2) {
	resources->port = res->data.io.min_base_address;
	}
	}
	return AE_OK;
	}

	static int __devinit snd_mpu401_acpi_pnp(int dev, struct acpi_device *device)
	{
	struct mpu401_resources res;
	acpi_status status;

	res.port = SNDRV_AUTO_PORT;
	res.irq = SNDRV_AUTO_IRQ;
	status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
	snd_mpu401_acpi_resource, &res);
	if (ACPI_FAILURE(status))
	return -ENODEV;
	if (res.port == SNDRV_AUTO_PORT \|\| res.irq == SNDRV_AUTO_IRQ) {
	snd_printk(KERN_ERR "no port or irq in %s _CRS\n",
	acpi_device_bid(device));
	return -ENODEV;
	}
	port[dev] = res.port;
	irq[dev] = res.irq;
	return 0;
	}

	#endif /* USE_ACPI_PNP */

	static int __devinit snd_card_mpu401_probe(int dev, struct acpi_device *device)
	{
	snd_card_t *card;
	int err;

	#ifdef USE_ACPI_PNP
	if (!device) {
	#endif
	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 port\n");
	return -EINVAL;
	}
	#ifdef USE_ACPI_PNP
	}
	#endif

	#ifdef USE_ACPI_PNP
	if (device && (err = snd_mpu401_acpi_pnp(dev, device)) < 0)
	return err;
	#endif

	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 0x%lx, ", card->shortname, port[dev]);
	if (irq[dev] >= 0) {
	sprintf(card->longname + strlen(card->longname), "IRQ %d", irq[dev]);
	} else {
	strcat(card->longname, "polled");
	}
	#ifdef USE_ACPI_PNP
	if (device) {
	strcat(card->longname, ", ACPI id ");
	strlcat(card->longname, acpi_device_bid(device), sizeof(card->longname));
	}
	#endif
	if (snd_mpu401_uart_new(card, 0,
	MPU401_HW_MPU401,
	port[dev], 0,
	irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL) < 0) {
	printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
	snd_card_free(card);
	return -ENODEV;
	}
	if ((err = snd_card_register(card)) < 0) {
	snd_card_free(card);
	return err;
	}
	#ifdef USE_ACPI_PNP
	if (device)
	acpi_driver_data(device) = card;
	else
	#endif
	snd_mpu401_legacy_cards[dev] = card;
	++cards;
	return 0;
	}

	#ifdef USE_ACPI_PNP

	static int __devinit snd_mpu401_acpi_add(struct acpi_device *device)
	{
	static int dev;
	int err;

	for ( ; dev < SNDRV_CARDS; ++dev) {
	if (!enable[dev] \|\| !acpipnp[dev])
	continue;
	err = snd_card_mpu401_probe(dev, device);
	if (err < 0)
	return err;
	++dev;
	return 0;
	}
	return -ENODEV;
	}

	static int __devexit snd_mpu401_acpi_remove(struct acpi_device *device,
	int type)
	{
	snd_card_t *card;

	if (!device)
	return -EINVAL;
	card = (snd_card_t *)acpi_driver_data(device);
	if (!card)
	return -EINVAL;

	snd_card_disconnect(card);
	snd_card_free_in_thread(card);
	acpi_driver_data(device) = NULL;
	return 0;
	}

	static struct acpi_driver snd_mpu401_acpi_driver = {
	.name = "MPU-401 Driver",
	.class = "mpu401",
	.ids = "PNPB006",
	.ops = {
	.add = snd_mpu401_acpi_add,
	.remove = __devexit_p(snd_mpu401_acpi_remove),
	},
	};

	#endif /* USE_ACPI_PNP */

	static int __init alsa_card_mpu401_init(void)
	{
	int dev;

	#ifdef USE_ACPI_PNP
	if (acpi_bus_register_driver(&snd_mpu401_acpi_driver) >= 0)
	acpi_driver_registered = 1;
	#endif
	for (dev = 0; dev < SNDRV_CARDS; dev++) {
	if (!enable[dev])
	continue;
	#ifdef USE_ACPI_PNP
	if (acpipnp[dev] && acpi_driver_registered)
	continue;
	#endif
	snd_card_mpu401_probe(dev, NULL);
	}
	if (!cards) {
	#ifdef MODULE
	printk(KERN_ERR "MPU-401 device not found or device busy\n");
	#endif
	#ifdef USE_ACPI_PNP
	if (acpi_driver_registered)
	acpi_bus_unregister_driver(&snd_mpu401_acpi_driver);
	#endif
	return -ENODEV;
	}
	return 0;
	}

	static void __exit alsa_card_mpu401_exit(void)
	{
	int idx;

	#ifdef USE_ACPI_PNP
	if (acpi_driver_registered)
	acpi_bus_unregister_driver(&snd_mpu401_acpi_driver);
	#endif
	for (idx = 0; idx < SNDRV_CARDS; idx++)
	snd_card_free(snd_mpu401_legacy_cards[idx]);
	}

	module_init(alsa_card_mpu401_init)
	module_exit(alsa_card_mpu401_exit)