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original_kernel/sound/isa/gus/gusclassic.c

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/*
* Driver for Gravis UltraSound Classic soundcard
* 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/err.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/time.h>
#include <linux/moduleparam.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/gus.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Gravis UltraSound Classic");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
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 port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x220,0x230,0x240,0x250,0x260 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 3,5,9,11,12,15 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 1,3,5,6,7 */
static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
/* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for GUS Classic soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for GUS Classic soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable GUS Classic soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for GUS Classic driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for GUS Classic driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for GUS Classic driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for GUS Classic driver.");
module_param_array(joystick_dac, int, NULL, 0444);
MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS Classic driver.");
module_param_array(channels, int, NULL, 0444);
MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
module_param_array(pcm_channels, int, NULL, 0444);
MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
static struct platform_device *devices[SNDRV_CARDS];
#define PFX "gusclassic: "
static int __init snd_gusclassic_detect(struct snd_gus_card * gus)
{
unsigned char d;
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
return -ENODEV;
}
udelay(160);
snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* release reset */
udelay(160);
if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
return -ENODEV;
}
return 0;
}
static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
{
gus->equal_irq = 0;
gus->codec_flag = 0;
gus->max_flag = 0;
gus->joystick_dac = joystick_dac[dev];
}
static int __init snd_gusclassic_probe(struct platform_device *pdev)
{
int dev = pdev->id;
static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
int xirq, xdma1, xdma2;
struct snd_card *card;
struct snd_gus_card *gus = NULL;
int err;
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
if (pcm_channels[dev] < 2)
pcm_channels[dev] = 2;
xirq = irq[dev];
if (xirq == SNDRV_AUTO_IRQ) {
if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
err = -EBUSY;
goto _err;
}
}
xdma1 = dma1[dev];
if (xdma1 == SNDRV_AUTO_DMA) {
if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free DMA1\n");
err = -EBUSY;
goto _err;
}
}
xdma2 = dma2[dev];
if (xdma2 == SNDRV_AUTO_DMA) {
if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
snd_printk(KERN_ERR PFX "unable to find a free DMA2\n");
err = -EBUSY;
goto _err;
}
}
if (port[dev] != SNDRV_AUTO_PORT) {
err = snd_gus_create(card,
port[dev],
xirq, xdma1, xdma2,
0, channels[dev], pcm_channels[dev],
0, &gus);
} else {
/* auto-probe legacy ports */
static unsigned long possible_ports[] = {
0x220, 0x230, 0x240, 0x250, 0x260,
};
int i;
for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
err = snd_gus_create(card,
possible_ports[i],
xirq, xdma1, xdma2,
0, channels[dev], pcm_channels[dev],
0, &gus);
if (err >= 0) {
port[dev] = possible_ports[i];
break;
}
}
}
if (err < 0)
goto _err;
if ((err = snd_gusclassic_detect(gus)) < 0)
goto _err;
snd_gusclassic_init(dev, gus);
if ((err = snd_gus_initialize(gus)) < 0)
goto _err;
if (gus->max_flag || gus->ess_flag) {
snd_printk(KERN_ERR PFX "GUS Classic or ACE soundcard was not detected at 0x%lx\n", gus->gf1.port);
err = -ENODEV;
goto _err;
}
if ((err = snd_gf1_new_mixer(gus)) < 0)
goto _err;
if ((err = snd_gf1_pcm_new(gus, 0, 0, NULL)) < 0)
goto _err;
if (!gus->ace_flag) {
if ((err = snd_gf1_rawmidi_new(gus, 0, NULL)) < 0)
goto _err;
}
sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %d, dma %d", gus->gf1.port, xirq, xdma1);
if (xdma2 >= 0)
sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
snd_card_set_dev(card, &pdev->dev);
if ((err = snd_card_register(card)) < 0)
goto _err;
platform_set_drvdata(pdev, card);
return 0;
_err:
snd_card_free(card);
return err;
}
static int snd_gusclassic_remove(struct platform_device *devptr)
{
snd_card_free(platform_get_drvdata(devptr));
platform_set_drvdata(devptr, NULL);
return 0;
}
#define GUSCLASSIC_DRIVER "snd_gusclassic"
static struct platform_driver snd_gusclassic_driver = {
.probe = snd_gusclassic_probe,
.remove = snd_gusclassic_remove,
/* FIXME: suspend/resume */
.driver = {
.name = GUSCLASSIC_DRIVER
},
};
static void __init_or_module snd_gusclassic_unregister_all(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(devices); ++i)
platform_device_unregister(devices[i]);
platform_driver_unregister(&snd_gusclassic_driver);
}
static int __init alsa_card_gusclassic_init(void)
{
int i, cards, err;
err = platform_driver_register(&snd_gusclassic_driver);
if (err < 0)
return err;
cards = 0;
for (i = 0; i < SNDRV_CARDS; i++) {
struct platform_device *device;
if (! enable[i])
continue;
device = platform_device_register_simple(GUSCLASSIC_DRIVER,
i, NULL, 0);
if (IS_ERR(device))
continue;
if (!platform_get_drvdata(device)) {
platform_device_unregister(device);
continue;
}
devices[i] = device;
cards++;
}
if (!cards) {
#ifdef MODULE
printk(KERN_ERR "GUS Classic soundcard not found or device busy\n");
#endif
snd_gusclassic_unregister_all();
return -ENODEV;
}
return 0;
}
static void __exit alsa_card_gusclassic_exit(void)
{
snd_gusclassic_unregister_all();
}
module_init(alsa_card_gusclassic_init)
module_exit(alsa_card_gusclassic_exit)
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