diff options
Diffstat (limited to 'sound/oss/sgalaxy.c')
| -rw-r--r-- | sound/oss/sgalaxy.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/sound/oss/sgalaxy.c b/sound/oss/sgalaxy.c new file mode 100644 index 00000000000..3f32d467437 --- /dev/null +++ b/sound/oss/sgalaxy.c @@ -0,0 +1,207 @@ +/* + * sound/sgalaxy.c + * + * Low level driver for Aztech Sound Galaxy cards. + * Copyright 1998 Artur Skawina <skawina@geocities.com> + * + * Supported cards: + * Aztech Sound Galaxy Waverider Pro 32 - 3D + * Aztech Sound Galaxy Washington 16 + * + * Based on cs4232.c by Hannu Savolainen and Alan Cox. + * + * + * Copyright (C) by Hannu Savolainen 1993-1997 + * + * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) + * Version 2 (June 1991). See the "COPYING" file distributed with this software + * for more info. + * + * Changes: + * 11-10-2000 Bartlomiej Zolnierkiewicz <bkz@linux-ide.org> + * Added __init to sb_rst() and sb_cmd() + */ + +#include <linux/init.h> +#include <linux/module.h> + +#include "sound_config.h" +#include "ad1848.h" + +static void sleep( unsigned howlong ) +{ + current->state = TASK_INTERRUPTIBLE; + schedule_timeout(howlong); +} + +#define DPORT 0x80 + +/* Sound Blaster regs */ + +#define SBDSP_RESET 0x6 +#define SBDSP_READ 0xA +#define SBDSP_COMMAND 0xC +#define SBDSP_STATUS SBDSP_COMMAND +#define SBDSP_DATA_AVAIL 0xE + +static int __init sb_rst(int base) +{ + int i; + + outb( 1, base+SBDSP_RESET ); /* reset the DSP */ + outb( 0, base+SBDSP_RESET ); + + for ( i=0; i<500; i++ ) /* delay */ + inb(DPORT); + + for ( i=0; i<100000; i++ ) + { + if ( inb( base+SBDSP_DATA_AVAIL )&0x80 ) + break; + } + + if ( inb( base+SBDSP_READ )!=0xAA ) + return 0; + + return 1; +} + +static int __init sb_cmd( int base, unsigned char val ) +{ + int i; + + for ( i=100000; i; i-- ) + { + if ( (inb( base+SBDSP_STATUS )&0x80)==0 ) + { + outb( val, base+SBDSP_COMMAND ); + break; + } + } + return i; /* i>0 == success */ +} + + +#define ai_sgbase driver_use_1 + +static int __init probe_sgalaxy( struct address_info *ai ) +{ + struct resource *ports; + int n; + + if (!request_region(ai->io_base, 4, "WSS config")) { + printk(KERN_ERR "sgalaxy: WSS IO port 0x%03x not available\n", ai->io_base); + return 0; + } + + ports = request_region(ai->io_base + 4, 4, "ad1848"); + if (!ports) { + printk(KERN_ERR "sgalaxy: WSS IO port 0x%03x not available\n", ai->io_base); + release_region(ai->io_base, 4); + return 0; + } + + if (!request_region( ai->ai_sgbase, 0x10, "SoundGalaxy SB")) { + printk(KERN_ERR "sgalaxy: SB IO port 0x%03x not available\n", ai->ai_sgbase); + release_region(ai->io_base + 4, 4); + release_region(ai->io_base, 4); + return 0; + } + + if (ad1848_detect(ports, NULL, ai->osp)) + goto out; /* The card is already active, check irq etc... */ + + /* switch to MSS/WSS mode */ + + sb_rst( ai->ai_sgbase ); + + sb_cmd( ai->ai_sgbase, 9 ); + sb_cmd( ai->ai_sgbase, 0 ); + + sleep( HZ/10 ); + +out: + if (!probe_ms_sound(ai, ports)) { + release_region(ai->io_base + 4, 4); + release_region(ai->io_base, 4); + release_region(ai->ai_sgbase, 0x10); + return 0; + } + + attach_ms_sound(ai, ports, THIS_MODULE); + n=ai->slots[0]; + + if (n!=-1 && audio_devs[n]->mixer_dev != -1 ) { + AD1848_REROUTE( SOUND_MIXER_LINE1, SOUND_MIXER_LINE ); /* Line-in */ + AD1848_REROUTE( SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH ); /* FM+Wavetable*/ + AD1848_REROUTE( SOUND_MIXER_LINE3, SOUND_MIXER_CD ); /* CD */ + } + return 1; +} + +static void __exit unload_sgalaxy( struct address_info *ai ) +{ + unload_ms_sound( ai ); + release_region( ai->ai_sgbase, 0x10 ); +} + +static struct address_info cfg; + +static int __initdata io = -1; +static int __initdata irq = -1; +static int __initdata dma = -1; +static int __initdata dma2 = -1; +static int __initdata sgbase = -1; + +module_param(io, int, 0); +module_param(irq, int, 0); +module_param(dma, int, 0); +module_param(dma2, int, 0); +module_param(sgbase, int, 0); + +static int __init init_sgalaxy(void) +{ + cfg.io_base = io; + cfg.irq = irq; + cfg.dma = dma; + cfg.dma2 = dma2; + cfg.ai_sgbase = sgbase; + + if (cfg.io_base == -1 || cfg.irq == -1 || cfg.dma == -1 || cfg.ai_sgbase == -1 ) { + printk(KERN_ERR "sgalaxy: io, irq, dma and sgbase must be set.\n"); + return -EINVAL; + } + + if ( probe_sgalaxy(&cfg) == 0 ) + return -ENODEV; + + return 0; +} + +static void __exit cleanup_sgalaxy(void) +{ + unload_sgalaxy(&cfg); +} + +module_init(init_sgalaxy); +module_exit(cleanup_sgalaxy); + +#ifndef MODULE +static int __init setup_sgalaxy(char *str) +{ + /* io, irq, dma, dma2, sgbase */ + int ints[6]; + + str = get_options(str, ARRAY_SIZE(ints), ints); + io = ints[1]; + irq = ints[2]; + dma = ints[3]; + dma2 = ints[4]; + sgbase = ints[5]; + + return 1; +} + +__setup("sgalaxy=", setup_sgalaxy); +#endif +MODULE_LICENSE("GPL"); |