| /* |
| * Driver for generic MPU-401 boards (UART mode only) |
| * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| * |
| * |
| * 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/wait.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/mpu401.h> |
| #define SNDRV_GET_ID |
| #include <sound/initval.h> |
| #include <linux/delay.h> |
| |
| EXPORT_NO_SYMBOLS; |
| |
| MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); |
| MODULE_DESCRIPTION("MPU-401 UART"); |
| MODULE_LICENSE("GPL"); |
| MODULE_CLASSES("{sound}"); |
| |
| static int snd_index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ |
| static char *snd_id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ |
| static int snd_enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ |
| static long snd_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */ |
| static int snd_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */ |
| |
| MODULE_PARM(snd_index, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_index, "Index value for MPU-401 device."); |
| MODULE_PARM_SYNTAX(snd_index, SNDRV_INDEX_DESC); |
| MODULE_PARM(snd_id, "1-" __MODULE_STRING(SNDRV_CARDS) "s"); |
| MODULE_PARM_DESC(snd_id, "ID string for MPU-401 device."); |
| MODULE_PARM_SYNTAX(snd_id, SNDRV_ID_DESC); |
| MODULE_PARM(snd_enable, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_enable, "Enable MPU-401 device."); |
| MODULE_PARM_SYNTAX(snd_enable, SNDRV_ENABLE_DESC); |
| MODULE_PARM(snd_port, "1-" __MODULE_STRING(SNDRV_CARDS) "l"); |
| MODULE_PARM_DESC(snd_port, "Port # for MPU-401 device."); |
| MODULE_PARM_SYNTAX(snd_port, SNDRV_PORT12_DESC); |
| MODULE_PARM(snd_irq, "1-" __MODULE_STRING(SNDRV_CARDS) "i"); |
| MODULE_PARM_DESC(snd_irq, "IRQ # for MPU-401 device."); |
| MODULE_PARM_SYNTAX(snd_irq, SNDRV_IRQ_DESC); |
| |
| static snd_card_t *snd_mpu401_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR; |
| |
| static int __init snd_card_mpu401_probe(int dev) |
| { |
| snd_card_t *card; |
| int err; |
| |
| if (snd_port[dev] == SNDRV_AUTO_PORT) { |
| snd_printk("specify snd_port\n"); |
| return -EINVAL; |
| } |
| if (snd_irq[dev] == SNDRV_AUTO_IRQ) { |
| snd_printk("specify or disable IRQ port\n"); |
| return -EINVAL; |
| } |
| |
| card = snd_card_new(snd_index[dev], snd_id[dev], THIS_MODULE, 0); |
| if (card == NULL) |
| return -ENOMEM; |
| if (snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401, |
| snd_port[dev], 0, |
| snd_irq[dev], snd_irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL) < 0) { |
| snd_printk("MPU401 not detected at 0x%lx\n", snd_port[dev]); |
| snd_card_free(card); |
| return -ENODEV; |
| } |
| strcpy(card->driver, "MPU-401 UART"); |
| strcpy(card->shortname, card->driver); |
| sprintf(card->longname, "%s at 0x%lx, ", card->shortname, snd_port[dev]); |
| if (snd_irq[dev] >= 0) { |
| sprintf(card->longname + strlen(card->longname), "IRQ %d", snd_irq[dev]); |
| } else { |
| strcat(card->longname, "polled"); |
| } |
| if ((err = snd_card_register(card)) < 0) { |
| snd_card_free(card); |
| return err; |
| } |
| snd_mpu401_cards[dev] = card; |
| return 0; |
| } |
| |
| static int __init alsa_card_mpu401_init(void) |
| { |
| int dev, cards = 0; |
| |
| for (dev = 0; dev < SNDRV_CARDS; dev++) { |
| if (!snd_enable[dev]) |
| continue; |
| if (snd_card_mpu401_probe(dev) >= 0) |
| cards++; |
| } |
| if (!cards) { |
| #ifdef MODULE |
| snd_printk("MPU-401 device not found or device busy\n"); |
| #endif |
| return -ENODEV; |
| } |
| return 0; |
| } |
| |
| static void __exit alsa_card_mpu401_exit(void) |
| { |
| int idx; |
| |
| for (idx = 0; idx < SNDRV_CARDS; idx++) |
| snd_card_free(snd_mpu401_cards[idx]); |
| } |
| |
| module_init(alsa_card_mpu401_init) |
| module_exit(alsa_card_mpu401_exit) |
| |
| #ifndef MODULE |
| |
| /* format is: snd-mpu401=snd_enable,snd_index,snd_id,snd_port,snd_irq */ |
| |
| static int __init alsa_card_mpu401_setup(char *str) |
| { |
| static unsigned __initdata nr_dev = 0; |
| |
| if (nr_dev >= SNDRV_CARDS) |
| return 0; |
| (void)(get_option(&str,&snd_enable[nr_dev]) == 2 && |
| get_option(&str,&snd_index[nr_dev]) == 2 && |
| get_id(&str,&snd_id[nr_dev]) == 2 && |
| get_option(&str,(int *)&snd_port[nr_dev]) == 2 && |
| get_option(&str,&snd_irq[nr_dev]) == 2); |
| nr_dev++; |
| return 1; |
| } |
| |
| __setup("snd-mpu401=", alsa_card_mpu401_setup); |
| |
| #endif /* ifndef MODULE */ |