patch-2.1.102 linux/drivers/sound/sgalaxy.c

• Lines: 189
• Date: Thu May 14 10:33:17 1998
• Orig file: v2.1.101/linux/drivers/sound/sgalaxy.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.101/linux/drivers/sound/sgalaxy.c linux/drivers/sound/sgalaxy.c
@@ -0,0 +1,188 @@
+/*
+ * sound/sgalaxy.c
+ *
+ * Low level driver for Aztech Sound Galaxy cards.
+ * Copyright 1998 Artur Skawina
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+
+#include "sound_config.h"
+#include "soundmodule.h"
+
+#if defined(CONFIG_SGALAXY) || defined (MODULE)
+
+static void sleep( unsigned howlong )
+{
+	current->state   = TASK_INTERRUPTIBLE;
+	current->timeout = jiffies + howlong;
+	schedule();
+	current->timeout = 0;
+}
+
+#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 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 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
+
+int probe_sgalaxy( struct address_info *ai )
+{
+	if ( check_region( ai->io_base, 8 ) )
+	{
+		printk(KERN_ERR "sgalaxy: WSS IO port 0x%03x not available\n", ai->io_base);
+		return 0;
+	}
+        
+	if ( ad1848_detect( ai->io_base+4, NULL, ai->osp ) )
+		return 1;	       /* The card is already active */
+
+	if ( check_region( ai->ai_sgbase, 0x10 ) )
+	{
+		printk(KERN_ERR "sgalaxy: SB IO port 0x%03x not available\n", ai->ai_sgbase);
+		return 0;
+	}
+        
+	/* 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 );
+
+	if ( ad1848_detect( ai->io_base+4, NULL, ai->osp ) )
+		return 1;
+      	return 0;
+}
+
+void attach_sgalaxy( struct address_info *ai )
+{
+	int n;
+	
+	request_region( ai->ai_sgbase, 0x10, "SoundGalaxy SB" );
+ 
+	n=attach_ms_sound( ai );
+	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 */
+	}
+}
+
+void unload_sgalaxy( struct address_info *ai )
+{
+	unload_ms_sound( ai );
+	release_region( ai->ai_sgbase, 0x10 );
+}
+
+#ifdef MODULE
+
+int   io       = -1;
+int   irq      = -1;
+int   dma      = -1;
+int   dma2     = -1;
+int   sgbase   = -1;
+
+MODULE_PARM(io,"i");
+MODULE_PARM(irq,"i");
+MODULE_PARM(dma,"i");
+MODULE_PARM(dma2,"i");
+MODULE_PARM(sgbase,"i");
+
+EXPORT_NO_SYMBOLS;
+
+struct address_info ai;
+
+
+int init_module(void)
+{
+	if ( io==-1 || irq==-1 || dma==-1 || sgbase==-1 )
+	{
+		printk(KERN_ERR "sgalaxy: io, irq, dma and sgbase must be set.\n");
+		return -EINVAL;
+	}
+
+	ai.io_base   = io;
+	ai.irq       = irq;
+	ai.dma       = dma;
+	ai.dma2      = dma2;
+	ai.ai_sgbase = sgbase;
+
+	if ( probe_sgalaxy( &ai )==0 )
+		return -ENODEV;
+
+	attach_sgalaxy( &ai );
+
+	SOUND_LOCK;
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	unload_sgalaxy( &ai );
+	SOUND_LOCK_END;
+}
+
+#endif
+#endif