16dab54b8c
ARM,SA11xx UDA1341 driver,Generic drivers,MPU401 UART,MIPS MIPS AU1x00 driver,PPC,PPC PowerMac driver,SPARC,SPARC AMD7930 driver SPARC cs4231 driver,SPARC DBRI driver - Added snd_card_set_generic_dev() call. - Added SND_GENERIC_DRIVER to Kconfig. - Clean up the error path in probe if necessary. Signed-off-by: Takashi Iwai <tiwai@suse.de>
236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
/*
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* Driver for generic MPU-401 boards (UART mode only)
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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* Copyright (c) 2004 by Castet Matthieu <castet.matthieu@free.fr>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <sound/driver.h>
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#include <linux/init.h>
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#include <linux/pnp.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/mpu401.h>
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#include <sound/initval.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
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MODULE_DESCRIPTION("MPU-401 UART");
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MODULE_LICENSE("GPL");
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static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* exclude the first card */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
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#ifdef CONFIG_PNP
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static int pnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
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#endif
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static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* MPU-401 port number */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* MPU-401 IRQ */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for MPU-401 device.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for MPU-401 device.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable MPU-401 device.");
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#ifdef CONFIG_PNP
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module_param_array(pnp, bool, NULL, 0444);
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MODULE_PARM_DESC(pnp, "PnP detection for MPU-401 device.");
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#endif
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for MPU-401 device.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for MPU-401 device.");
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static snd_card_t *snd_mpu401_legacy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static int pnp_registered = 0;
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static int snd_mpu401_create(int dev, snd_card_t **rcard)
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{
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snd_card_t *card;
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int err;
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*rcard = NULL;
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card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
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if (card == NULL)
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return -ENOMEM;
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strcpy(card->driver, "MPU-401 UART");
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strcpy(card->shortname, card->driver);
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sprintf(card->longname, "%s at %#lx, ", card->shortname, port[dev]);
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if (irq[dev] >= 0) {
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sprintf(card->longname + strlen(card->longname), "irq %d", irq[dev]);
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} else {
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strcat(card->longname, "polled");
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}
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if ((err = snd_mpu401_uart_new(card, 0,
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MPU401_HW_MPU401,
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port[dev], 0,
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irq[dev], irq[dev] >= 0 ? SA_INTERRUPT : 0, NULL)) < 0) {
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printk(KERN_ERR "MPU401 not detected at 0x%lx\n", port[dev]);
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goto _err;
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}
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if ((err = snd_card_set_generic_dev(card)) < 0)
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goto _err;
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if ((err = snd_card_register(card)) < 0)
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goto _err;
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*rcard = card;
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return 0;
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_err:
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snd_card_free(card);
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return err;
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}
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static int __devinit snd_mpu401_probe(int dev)
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{
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if (port[dev] == SNDRV_AUTO_PORT) {
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snd_printk(KERN_ERR "specify port\n");
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return -EINVAL;
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}
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if (irq[dev] == SNDRV_AUTO_IRQ) {
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snd_printk(KERN_ERR "specify or disable IRQ\n");
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return -EINVAL;
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}
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return snd_mpu401_create(dev, &snd_mpu401_legacy_cards[dev]);
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}
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#ifdef CONFIG_PNP
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#define IO_EXTENT 2
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static struct pnp_device_id snd_mpu401_pnpids[] = {
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{ .id = "PNPb006" },
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{ .id = "" }
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};
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MODULE_DEVICE_TABLE(pnp, snd_mpu401_pnpids);
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static int __init snd_mpu401_pnp(int dev, struct pnp_dev *device,
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const struct pnp_device_id *id)
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{
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if (!pnp_port_valid(device, 0) ||
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pnp_port_flags(device, 0) & IORESOURCE_DISABLED) {
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snd_printk(KERN_ERR "no PnP port\n");
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return -ENODEV;
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}
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if (pnp_port_len(device, 0) < IO_EXTENT) {
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snd_printk(KERN_ERR "PnP port length is %ld, expected %d\n",
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pnp_port_len(device, 0), IO_EXTENT);
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return -ENODEV;
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}
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port[dev] = pnp_port_start(device, 0);
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if (!pnp_irq_valid(device, 0) ||
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pnp_irq_flags(device, 0) & IORESOURCE_DISABLED) {
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snd_printk(KERN_WARNING "no PnP irq, using polling\n");
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irq[dev] = -1;
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} else {
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irq[dev] = pnp_irq(device, 0);
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}
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return 0;
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}
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static int __devinit snd_mpu401_pnp_probe(struct pnp_dev *pnp_dev,
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const struct pnp_device_id *id)
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{
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static int dev;
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snd_card_t *card;
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int err;
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for ( ; dev < SNDRV_CARDS; ++dev) {
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if (!enable[dev] || !pnp[dev])
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continue;
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err = snd_mpu401_pnp(dev, pnp_dev, id);
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if (err < 0)
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return err;
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err = snd_mpu401_create(dev, &card);
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if (err < 0)
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return err;
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snd_card_set_dev(card, &pnp_dev->dev);
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pnp_set_drvdata(pnp_dev, card);
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++dev;
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return 0;
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}
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return -ENODEV;
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}
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static void __devexit snd_mpu401_pnp_remove(struct pnp_dev *dev)
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{
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snd_card_t *card = (snd_card_t *) pnp_get_drvdata(dev);
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snd_card_disconnect(card);
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snd_card_free_in_thread(card);
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}
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static struct pnp_driver snd_mpu401_pnp_driver = {
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.name = "mpu401",
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.id_table = snd_mpu401_pnpids,
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.probe = snd_mpu401_pnp_probe,
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.remove = __devexit_p(snd_mpu401_pnp_remove),
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};
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#else
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static struct pnp_driver snd_mpu401_pnp_driver;
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#endif
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static int __init alsa_card_mpu401_init(void)
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{
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int dev, devices = 0;
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int err;
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for (dev = 0; dev < SNDRV_CARDS; dev++) {
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if (!enable[dev])
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continue;
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#ifdef CONFIG_PNP
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if (pnp[dev])
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continue;
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#endif
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if (snd_mpu401_probe(dev) >= 0)
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devices++;
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}
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if ((err = pnp_register_driver(&snd_mpu401_pnp_driver)) >= 0) {
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pnp_registered = 1;
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devices += err;
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}
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if (!devices) {
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#ifdef MODULE
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printk(KERN_ERR "MPU-401 device not found or device busy\n");
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#endif
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if (pnp_registered)
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pnp_unregister_driver(&snd_mpu401_pnp_driver);
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return -ENODEV;
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}
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return 0;
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}
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static void __exit alsa_card_mpu401_exit(void)
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{
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int idx;
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if (pnp_registered)
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pnp_unregister_driver(&snd_mpu401_pnp_driver);
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for (idx = 0; idx < SNDRV_CARDS; idx++)
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snd_card_free(snd_mpu401_legacy_cards[idx]);
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}
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module_init(alsa_card_mpu401_init)
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module_exit(alsa_card_mpu401_exit)
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