![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
323 lines
8.9 KiB
C
323 lines
8.9 KiB
C
/*
|
|
* Driver for Aztech Sound Galaxy cards
|
|
* Copyright (c) by Christopher Butler <chrisb@sandy.force9.co.uk.
|
|
*
|
|
* I don't have documentation for this card, I based this driver on the
|
|
* driver for OSS/Free included in the kernel source (drivers/sound/sgalaxy.c)
|
|
*
|
|
* 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 <asm/dma.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/time.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <sound/core.h>
|
|
#include <sound/sb.h>
|
|
#include <sound/ad1848.h>
|
|
#include <sound/control.h>
|
|
#define SNDRV_LEGACY_FIND_FREE_IRQ
|
|
#define SNDRV_LEGACY_FIND_FREE_DMA
|
|
#include <sound/initval.h>
|
|
|
|
MODULE_AUTHOR("Christopher Butler <chrisb@sandy.force9.co.uk>");
|
|
MODULE_DESCRIPTION("Aztech Sound Galaxy");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_SUPPORTED_DEVICE("{{Aztech Systems,Sound Galaxy}}");
|
|
|
|
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 */
|
|
static long sbport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x240 */
|
|
static long wssport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x530,0xe80,0xf40,0x604 */
|
|
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 7,9,10,11 */
|
|
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3 */
|
|
|
|
module_param_array(index, int, NULL, 0444);
|
|
MODULE_PARM_DESC(index, "Index value for Sound Galaxy soundcard.");
|
|
module_param_array(id, charp, NULL, 0444);
|
|
MODULE_PARM_DESC(id, "ID string for Sound Galaxy soundcard.");
|
|
module_param_array(sbport, long, NULL, 0444);
|
|
MODULE_PARM_DESC(sbport, "Port # for Sound Galaxy SB driver.");
|
|
module_param_array(wssport, long, NULL, 0444);
|
|
MODULE_PARM_DESC(wssport, "Port # for Sound Galaxy WSS driver.");
|
|
module_param_array(irq, int, NULL, 0444);
|
|
MODULE_PARM_DESC(irq, "IRQ # for Sound Galaxy driver.");
|
|
module_param_array(dma1, int, NULL, 0444);
|
|
MODULE_PARM_DESC(dma1, "DMA1 # for Sound Galaxy driver.");
|
|
|
|
#define SGALAXY_AUXC_LEFT 18
|
|
#define SGALAXY_AUXC_RIGHT 19
|
|
|
|
static snd_card_t *snd_sgalaxy_cards[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
|
|
|
|
/*
|
|
|
|
*/
|
|
|
|
#define AD1848P1( port, x ) ( port + c_d_c_AD1848##x )
|
|
|
|
/* from lowlevel/sb/sb.c - to avoid having to allocate a sb_t for the */
|
|
/* short time we actually need it.. */
|
|
|
|
static int snd_sgalaxy_sbdsp_reset(unsigned long port)
|
|
{
|
|
int i;
|
|
|
|
outb(1, SBP1(port, RESET));
|
|
udelay(10);
|
|
outb(0, SBP1(port, RESET));
|
|
udelay(30);
|
|
for (i = 0; i < 1000 && !(inb(SBP1(port, DATA_AVAIL)) & 0x80); i++);
|
|
if (inb(SBP1(port, READ)) != 0xaa) {
|
|
snd_printd("sb_reset: failed at 0x%lx!!!\n", port);
|
|
return -ENODEV;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init snd_sgalaxy_sbdsp_command(unsigned long port, unsigned char val)
|
|
{
|
|
int i;
|
|
|
|
for (i = 10000; i; i--)
|
|
if ((inb(SBP1(port, STATUS)) & 0x80) == 0) {
|
|
outb(val, SBP1(port, COMMAND));
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t snd_sgalaxy_dummy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
|
|
{
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static int __init snd_sgalaxy_setup_wss(unsigned long port, int irq, int dma)
|
|
{
|
|
static int interrupt_bits[] = {-1, -1, -1, -1, -1, -1, -1, 0x08, -1,
|
|
0x10, 0x18, 0x20, -1, -1, -1, -1};
|
|
static int dma_bits[] = {1, 2, 0, 3};
|
|
int tmp, tmp1;
|
|
|
|
if ((tmp = inb(port + 3)) == 0xff)
|
|
{
|
|
snd_printdd("I/O address dead (0x%lx)\n", port);
|
|
return 0;
|
|
}
|
|
#if 0
|
|
snd_printdd("WSS signature = 0x%x\n", tmp);
|
|
#endif
|
|
|
|
if ((tmp & 0x3f) != 0x04 &&
|
|
(tmp & 0x3f) != 0x0f &&
|
|
(tmp & 0x3f) != 0x00) {
|
|
snd_printdd("No WSS signature detected on port 0x%lx\n",
|
|
port + 3);
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
snd_printdd("sgalaxy - setting up IRQ/DMA for WSS\n");
|
|
#endif
|
|
|
|
/* initialize IRQ for WSS codec */
|
|
tmp = interrupt_bits[irq % 16];
|
|
if (tmp < 0)
|
|
return -EINVAL;
|
|
|
|
if (request_irq(irq, snd_sgalaxy_dummy_interrupt, SA_INTERRUPT, "sgalaxy", NULL)) {
|
|
snd_printk(KERN_ERR "sgalaxy: can't grab irq %d\n", irq);
|
|
return -EIO;
|
|
}
|
|
|
|
outb(tmp | 0x40, port);
|
|
tmp1 = dma_bits[dma % 4];
|
|
outb(tmp | tmp1, port);
|
|
|
|
free_irq(irq, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __init snd_sgalaxy_detect(int dev, int irq, int dma)
|
|
{
|
|
#if 0
|
|
snd_printdd("sgalaxy - switching to WSS mode\n");
|
|
#endif
|
|
|
|
/* switch to WSS mode */
|
|
snd_sgalaxy_sbdsp_reset(sbport[dev]);
|
|
|
|
snd_sgalaxy_sbdsp_command(sbport[dev], 9);
|
|
snd_sgalaxy_sbdsp_command(sbport[dev], 0);
|
|
|
|
udelay(400);
|
|
return snd_sgalaxy_setup_wss(wssport[dev], irq, dma);
|
|
}
|
|
|
|
static struct ad1848_mix_elem snd_sgalaxy_controls[] = {
|
|
AD1848_DOUBLE("Aux Playback Switch", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 7, 7, 1, 1),
|
|
AD1848_DOUBLE("Aux Playback Volume", 0, SGALAXY_AUXC_LEFT, SGALAXY_AUXC_RIGHT, 0, 0, 31, 0)
|
|
};
|
|
|
|
static int __init snd_sgalaxy_mixer(ad1848_t *chip)
|
|
{
|
|
snd_card_t *card = chip->card;
|
|
snd_ctl_elem_id_t id1, id2;
|
|
unsigned int idx;
|
|
int err;
|
|
|
|
memset(&id1, 0, sizeof(id1));
|
|
memset(&id2, 0, sizeof(id2));
|
|
id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
|
|
/* reassign AUX0 to LINE */
|
|
strcpy(id1.name, "Aux Playback Switch");
|
|
strcpy(id2.name, "Line Playback Switch");
|
|
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
|
|
return err;
|
|
strcpy(id1.name, "Aux Playback Volume");
|
|
strcpy(id2.name, "Line Playback Volume");
|
|
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
|
|
return err;
|
|
/* reassign AUX1 to FM */
|
|
strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
|
|
strcpy(id2.name, "FM Playback Switch");
|
|
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
|
|
return err;
|
|
strcpy(id1.name, "Aux Playback Volume");
|
|
strcpy(id2.name, "FM Playback Volume");
|
|
if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
|
|
return err;
|
|
/* build AUX2 input */
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_sgalaxy_controls); idx++) {
|
|
if ((err = snd_ad1848_add_ctl_elem(chip, &snd_sgalaxy_controls[idx])) < 0)
|
|
return err;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init snd_sgalaxy_probe(int dev)
|
|
{
|
|
static int possible_irqs[] = {7, 9, 10, 11, -1};
|
|
static int possible_dmas[] = {1, 3, 0, -1};
|
|
int err, xirq, xdma1;
|
|
snd_card_t *card;
|
|
ad1848_t *chip;
|
|
|
|
if (sbport[dev] == SNDRV_AUTO_PORT) {
|
|
snd_printk("specify SB port\n");
|
|
return -EINVAL;
|
|
}
|
|
if (wssport[dev] == SNDRV_AUTO_PORT) {
|
|
snd_printk("specify WSS port\n");
|
|
return -EINVAL;
|
|
}
|
|
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
|
|
if (card == NULL)
|
|
return -ENOMEM;
|
|
|
|
xirq = irq[dev];
|
|
if (xirq == SNDRV_AUTO_IRQ) {
|
|
if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
|
|
snd_card_free(card);
|
|
snd_printk("unable to find a free IRQ\n");
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
xdma1 = dma1[dev];
|
|
if (xdma1 == SNDRV_AUTO_DMA) {
|
|
if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
|
|
snd_card_free(card);
|
|
snd_printk("unable to find a free DMA\n");
|
|
return -EBUSY;
|
|
}
|
|
}
|
|
|
|
if ((err = snd_sgalaxy_detect(dev, xirq, xdma1)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
if ((err = snd_ad1848_create(card, wssport[dev] + 4,
|
|
xirq, xdma1,
|
|
AD1848_HW_DETECT, &chip)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
if ((err = snd_ad1848_pcm(chip, 0, NULL)) < 0) {
|
|
snd_printdd("sgalaxy - error creating new ad1848 PCM device\n");
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
if ((err = snd_ad1848_mixer(chip)) < 0) {
|
|
snd_printdd("sgalaxy - error creating new ad1848 mixer\n");
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
if (snd_sgalaxy_mixer(chip) < 0) {
|
|
snd_printdd("sgalaxy - the mixer rewrite failed\n");
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
|
|
strcpy(card->driver, "Sound Galaxy");
|
|
strcpy(card->shortname, "Sound Galaxy");
|
|
sprintf(card->longname, "Sound Galaxy at 0x%lx, irq %d, dma %d",
|
|
wssport[dev], xirq, xdma1);
|
|
|
|
if ((err = snd_card_register(card)) < 0) {
|
|
snd_card_free(card);
|
|
return err;
|
|
}
|
|
snd_sgalaxy_cards[dev] = card;
|
|
return 0;
|
|
}
|
|
|
|
static int __init alsa_card_sgalaxy_init(void)
|
|
{
|
|
int dev, cards;
|
|
|
|
for (dev = cards = 0; dev < SNDRV_CARDS && enable[dev]; dev++) {
|
|
if (snd_sgalaxy_probe(dev) >= 0)
|
|
cards++;
|
|
}
|
|
if (!cards) {
|
|
#ifdef MODULE
|
|
snd_printk(KERN_ERR "Sound Galaxy soundcard not found or device busy\n");
|
|
#endif
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit alsa_card_sgalaxy_exit(void)
|
|
{
|
|
int idx;
|
|
|
|
for (idx = 0; idx < SNDRV_CARDS; idx++)
|
|
snd_card_free(snd_sgalaxy_cards[idx]);
|
|
}
|
|
|
|
module_init(alsa_card_sgalaxy_init)
|
|
module_exit(alsa_card_sgalaxy_exit)
|