mirror of https://gitee.com/openkylin/linux.git
224 lines
6.2 KiB
C
224 lines
6.2 KiB
C
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/*
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* Driver for SoundBlaster 1.0/2.0/Pro soundcards and compatible
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* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
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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/slab.h>
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#include <linux/ioport.h>
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#include <linux/moduleparam.h>
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#include <sound/core.h>
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#include <sound/sb.h>
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#include <sound/opl3.h>
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#define SNDRV_LEGACY_AUTO_PROBE
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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("Sound Blaster 1.0/2.0/Pro");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB 1.0/SB 2.0/SB Pro}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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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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static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240,0x260 */
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static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,10 */
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static int dma8[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3 */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for Sound Blaster soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for Sound Blaster soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable Sound Blaster soundcard.");
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module_param_array(port, long, NULL, 0444);
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MODULE_PARM_DESC(port, "Port # for SB8 driver.");
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module_param_array(irq, int, NULL, 0444);
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MODULE_PARM_DESC(irq, "IRQ # for SB8 driver.");
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module_param_array(dma8, int, NULL, 0444);
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MODULE_PARM_DESC(dma8, "8-bit DMA # for SB8 driver.");
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struct snd_sb8 {
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struct resource *fm_res; /* used to block FM i/o region for legacy cards */
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};
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static snd_card_t *snd_sb8_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
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static irqreturn_t snd_sb8_interrupt(int irq, void *dev_id, struct pt_regs *regs)
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{
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sb_t *chip = dev_id;
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if (chip->open & SB_OPEN_PCM) {
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return snd_sb8dsp_interrupt(chip);
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} else {
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return snd_sb8dsp_midi_interrupt(chip);
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}
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}
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static void snd_sb8_free(snd_card_t *card)
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{
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struct snd_sb8 *acard = (struct snd_sb8 *)card->private_data;
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if (acard == NULL)
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return;
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if (acard->fm_res) {
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release_resource(acard->fm_res);
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kfree_nocheck(acard->fm_res);
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}
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}
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static int __init snd_sb8_probe(int dev)
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{
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sb_t *chip;
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snd_card_t *card;
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struct snd_sb8 *acard;
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opl3_t *opl3;
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int err;
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card = snd_card_new(index[dev], id[dev], THIS_MODULE,
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sizeof(struct snd_sb8));
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if (card == NULL)
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return -ENOMEM;
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acard = (struct snd_sb8 *)card->private_data;
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card->private_free = snd_sb8_free;
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/* block the 0x388 port to avoid PnP conflicts */
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acard->fm_res = request_region(0x388, 4, "SoundBlaster FM");
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if ((err = snd_sbdsp_create(card, port[dev], irq[dev],
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snd_sb8_interrupt,
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dma8[dev],
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-1,
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SB_HW_AUTO,
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&chip)) < 0) {
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snd_card_free(card);
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return err;
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}
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if (chip->hardware >= SB_HW_16) {
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snd_card_free(card);
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if (chip->hardware == SB_HW_ALS100)
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snd_printdd("ALS100 chip detected at 0x%lx, try snd-als100 module\n",
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port[dev]);
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else
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snd_printdd("SB 16 chip detected at 0x%lx, try snd-sb16 module\n",
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port[dev]);
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return -ENODEV;
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}
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if ((err = snd_sb8dsp_pcm(chip, 0, NULL)) < 0) {
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snd_card_free(card);
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return err;
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}
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if ((err = snd_sbmixer_new(chip)) < 0) {
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snd_card_free(card);
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return err;
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}
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if (chip->hardware == SB_HW_10 || chip->hardware == SB_HW_20) {
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if ((err = snd_opl3_create(card, chip->port + 8, 0,
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OPL3_HW_AUTO, 1,
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&opl3)) < 0) {
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snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx\n", chip->port + 8);
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}
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} else {
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if ((err = snd_opl3_create(card, chip->port, chip->port + 2,
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OPL3_HW_AUTO, 1,
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&opl3)) < 0) {
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snd_printk(KERN_ERR "sb8: no OPL device at 0x%lx-0x%lx\n",
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chip->port, chip->port + 2);
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}
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}
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if (err >= 0) {
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if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
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snd_card_free(card);
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return err;
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}
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}
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if ((err = snd_sb8dsp_midi(chip, 0, NULL)) < 0) {
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snd_card_free(card);
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return err;
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}
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strcpy(card->driver, chip->hardware == SB_HW_PRO ? "SB Pro" : "SB8");
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strcpy(card->shortname, chip->name);
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sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
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chip->name,
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chip->port,
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irq[dev], dma8[dev]);
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if ((err = snd_card_register(card)) < 0) {
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snd_card_free(card);
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return err;
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}
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snd_sb8_cards[dev] = card;
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return 0;
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}
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static int __init snd_card_sb8_legacy_auto_probe(unsigned long xport)
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{
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static int dev;
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int res;
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for ( ; dev < SNDRV_CARDS; dev++) {
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if (!enable[dev] || port[dev] != SNDRV_AUTO_PORT)
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continue;
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port[dev] = xport;
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res = snd_sb8_probe(dev);
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if (res < 0)
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port[dev] = SNDRV_AUTO_PORT;
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return res;
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}
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return -ENODEV;
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}
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static int __init alsa_card_sb8_init(void)
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{
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static unsigned long possible_ports[] = {0x220, 0x240, 0x260, -1};
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int dev, cards, i;
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for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
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if (port[dev] == SNDRV_AUTO_PORT)
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continue;
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if (snd_sb8_probe(dev) >= 0)
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cards++;
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}
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i = snd_legacy_auto_probe(possible_ports, snd_card_sb8_legacy_auto_probe);
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if (i > 0)
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cards += i;
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if (!cards) {
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#ifdef MODULE
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snd_printk(KERN_ERR "Sound Blaster soundcard not found or device busy\n");
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#endif
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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_sb8_exit(void)
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{
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int idx;
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for (idx = 0; idx < SNDRV_CARDS; idx++)
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snd_card_free(snd_sb8_cards[idx]);
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}
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module_init(alsa_card_sb8_init)
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module_exit(alsa_card_sb8_exit)
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