/* * Driver for generic MPU-401 boards (UART mode only) * Copyright (c) by Jaroslav Kysela * * ACPI PnP Copyright (c) 2004 by Clemens Ladisch * based on 8250_acpi.c * Copyright (c) 2002-2003 Matthew Wilcox for Hewlett-Packard * Copyright (C) 2004 Hewlett-Packard Co * Bjorn Helgaas * * * 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 #include #ifdef CONFIG_ACPI_BUS #include #endif #include #include #include #include #ifdef CONFIG_ACPI_BUS #define USE_ACPI_PNP #endif MODULE_AUTHOR("Jaroslav Kysela "); MODULE_DESCRIPTION("MPU-401 UART"); MODULE_LICENSE("GPL"); MODULE_CLASSES("{sound}"); 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 */ static int boot_devs; module_param_array(index, int, boot_devs, 0444); MODULE_PARM_DESC(index, "Index value for MPU-401 device."); MODULE_PARM_SYNTAX(index, SNDRV_INDEX_DESC); module_param_array(id, charp, boot_devs, 0444); MODULE_PARM_DESC(id, "ID string for MPU-401 device."); MODULE_PARM_SYNTAX(id, SNDRV_ID_DESC); module_param_array(enable, bool, boot_devs, 0444); MODULE_PARM_DESC(enable, "Enable MPU-401 device."); MODULE_PARM_SYNTAX(enable, SNDRV_ENABLE_DESC); #ifdef USE_ACPI_PNP module_param_array(acpipnp, bool, boot_devs, 0444); MODULE_PARM_DESC(acpipnp, "ACPI PnP detection for MPU-401 device."); MODULE_PARM_SYNTAX(acpipnp, SNDRV_ENABLED "," SNDRV_BOOLEAN_TRUE_DESC); #endif module_param_array(port, long, boot_devs, 0444); MODULE_PARM_DESC(port, "Port # for MPU-401 device."); MODULE_PARM_SYNTAX(port, SNDRV_PORT12_DESC); module_param_array(irq, int, boot_devs, 0444); MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device."); MODULE_PARM_SYNTAX(irq, SNDRV_IRQ_DESC); #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) { #ifdef CONFIG_IA64 resources->irq = acpi_register_irq(res->data.irq.interrupts[0], res->data.irq.active_high_low, res->data.irq.edge_level); #else resources->irq = res->data.irq.interrupts[0]; #endif } } 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, ", bus 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)