Linux-2.6.12-rc2

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!

1 files changed, 329 insertions, 0 deletions

diff --git a/sound/oss/opl3sa.c b/sound/oss/opl3sa.c
new file mode 100644
index 000000000000..fe4907c6e8fc
--- /dev/null
+++ b/sound/oss/opl3sa.c
@@ -0,0 +1,329 @@
+/*
+ * sound/opl3sa.c
+ *
+ * Low level driver for Yamaha YMF701B aka OPL3-SA chip
+ * 
+ *
+ *
+ * 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:
+ *	Alan Cox		Modularisation
+ *	Christoph Hellwig	Adapted to module_init/module_exit
+ *	Arnaldo C. de Melo	got rid of attach_uart401
+ *
+ * FIXME:
+ * 	Check for install of mpu etc is wrong, should check result of the mss stuff
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+#undef  SB_OK
+
+#include "sound_config.h"
+
+#include "ad1848.h"
+#include "mpu401.h"
+
+#ifdef SB_OK
+#include "sb.h"
+static int sb_initialized;
+#endif
+
+static DEFINE_SPINLOCK(lock);
+
+static unsigned char opl3sa_read(int addr)
+{
+	unsigned long flags;
+	unsigned char tmp;
+
+	spin_lock_irqsave(&lock,flags);
+	outb((0x1d), 0xf86);	/* password */
+	outb(((unsigned char) addr), 0xf86);	/* address */
+	tmp = inb(0xf87);	/* data */
+	spin_unlock_irqrestore(&lock,flags);
+
+	return tmp;
+}
+
+static void opl3sa_write(int addr, int data)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&lock,flags);
+	outb((0x1d), 0xf86);	/* password */
+	outb(((unsigned char) addr), 0xf86);	/* address */
+	outb(((unsigned char) data), 0xf87);	/* data */
+	spin_unlock_irqrestore(&lock,flags);
+}
+
+static int __init opl3sa_detect(void)
+{
+	int tmp;
+
+	if (((tmp = opl3sa_read(0x01)) & 0xc4) != 0x04)
+	{
+		DDB(printk("OPL3-SA detect error 1 (%x)\n", opl3sa_read(0x01)));
+		/* return 0; */
+	}
+
+	/*
+	 * Check that the password feature has any effect
+	 */
+	
+	if (inb(0xf87) == tmp)
+	{
+		DDB(printk("OPL3-SA detect failed 2 (%x/%x)\n", tmp, inb(0xf87)));
+		return 0;
+	}
+	tmp = (opl3sa_read(0x04) & 0xe0) >> 5;
+
+	if (tmp != 0 && tmp != 1)
+	{
+		DDB(printk("OPL3-SA detect failed 3 (%d)\n", tmp));
+		return 0;
+	}
+	DDB(printk("OPL3-SA mode %x detected\n", tmp));
+
+	opl3sa_write(0x01, 0x00);	/* Disable MSS */
+	opl3sa_write(0x02, 0x00);	/* Disable SB */
+	opl3sa_write(0x03, 0x00);	/* Disable MPU */
+
+	return 1;
+}
+
+/*
+ *    Probe and attach routines for the Windows Sound System mode of
+ *     OPL3-SA
+ */
+
+static int __init probe_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
+{
+	unsigned char tmp = 0x24;	/* WSS enable */
+
+	/*
+	 * Check if the IO port returns valid signature. The original MS Sound
+	 * system returns 0x04 while some cards (OPL3-SA for example)
+	 * return 0x00.
+	 */
+
+	if (!opl3sa_detect())
+	{
+		printk(KERN_ERR "OSS: OPL3-SA chip not found\n");
+		return 0;
+	}
+	
+	switch (hw_config->io_base)
+	{
+		case 0x530:
+			tmp |= 0x00;
+			break;
+		case 0xe80:
+			tmp |= 0x08;
+			break;
+		case 0xf40:
+			tmp |= 0x10;
+			break;
+		case 0x604:
+			tmp |= 0x18;
+			break;
+		default:
+			printk(KERN_ERR "OSS: Unsupported OPL3-SA/WSS base %x\n", hw_config->io_base);
+		  return 0;
+	}
+
+	opl3sa_write(0x01, tmp);	/* WSS setup register */
+
+	return probe_ms_sound(hw_config, ports);
+}
+
+static void __init attach_opl3sa_wss(struct address_info *hw_config, struct resource *ports)
+{
+	int nm = num_mixers;
+
+	/* FIXME */
+	attach_ms_sound(hw_config, ports, THIS_MODULE);
+	if (num_mixers > nm)	/* A mixer was installed */
+	{
+		AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_CD);
+		AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_SYNTH);
+		AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_LINE);
+	}
+}
+
+
+static int __init probe_opl3sa_mpu(struct address_info *hw_config)
+{
+	unsigned char conf;
+	static signed char irq_bits[] = {
+		-1, -1, -1, -1, -1, 1, -1, 2, -1, 3, 4
+	};
+
+	if (hw_config->irq > 10)
+	{
+		printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
+		return 0;
+	}
+	if (irq_bits[hw_config->irq] == -1)
+	{
+		printk(KERN_ERR "OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
+		return 0;
+	}
+	switch (hw_config->io_base)
+	{
+		case 0x330:
+			conf = 0x00;
+			break;
+		case 0x332:
+			conf = 0x20;
+			break;
+		case 0x334:
+			conf = 0x40;
+			break;
+		case 0x300:
+			conf = 0x60;
+			break;
+		default:
+			return 0;	/* Invalid port */
+	}
+
+	conf |= 0x83;		/* MPU & OPL3 (synth) & game port enable */
+	conf |= irq_bits[hw_config->irq] << 2;
+
+	opl3sa_write(0x03, conf);
+
+	hw_config->name = "OPL3-SA (MPU401)";
+
+	return probe_uart401(hw_config, THIS_MODULE);
+}
+
+static void __exit unload_opl3sa_wss(struct address_info *hw_config)
+{
+	int dma2 = hw_config->dma2;
+
+	if (dma2 == -1)
+		dma2 = hw_config->dma;
+
+	release_region(0xf86, 2);
+	release_region(hw_config->io_base, 4);
+
+	ad1848_unload(hw_config->io_base + 4,
+		      hw_config->irq,
+		      hw_config->dma,
+		      dma2,
+		      0);
+	sound_unload_audiodev(hw_config->slots[0]);
+}
+
+static inline void __exit unload_opl3sa_mpu(struct address_info *hw_config)
+{
+	unload_uart401(hw_config);
+}
+
+#ifdef SB_OK
+static inline void __exit unload_opl3sa_sb(struct address_info *hw_config)
+{
+	sb_dsp_unload(hw_config);
+}
+#endif
+
+static int found_mpu;
+
+static struct address_info cfg;
+static struct address_info cfg_mpu;
+
+static int __initdata io	= -1;
+static int __initdata irq	= -1;
+static int __initdata dma	= -1;
+static int __initdata dma2	= -1;
+static int __initdata mpu_io	= -1;
+static int __initdata mpu_irq	= -1;
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(dma, int, 0);
+module_param(dma2, int, 0);
+module_param(mpu_io, int, 0);
+module_param(mpu_irq, int, 0);
+
+static int __init init_opl3sa(void)
+{
+	struct resource *ports;
+	if (io == -1 || irq == -1 || dma == -1) {
+		printk(KERN_ERR "opl3sa: dma, irq and io must be set.\n");
+		return -EINVAL;
+	}
+
+	cfg.io_base = io;
+	cfg.irq = irq;
+	cfg.dma = dma;
+	cfg.dma2 = dma2;
+	
+	cfg_mpu.io_base = mpu_io;
+	cfg_mpu.irq = mpu_irq;
+
+	ports = request_region(io + 4, 4, "ad1848");
+	if (!ports)
+		return -EBUSY;
+
+	if (!request_region(0xf86, 2, "OPL3-SA"))/* Control port is busy */ {
+		release_region(io + 4, 4);
+		return 0;
+	}
+
+	if (!request_region(io, 4, "WSS config")) {
+		release_region(0x86, 2);
+		release_region(io + 4, 4);
+		return 0;
+	}
+
+	if (probe_opl3sa_wss(&cfg, ports) == 0) {
+		release_region(0xf86, 2);
+		release_region(io, 4);
+		release_region(io + 4, 4);
+		return -ENODEV;
+	}
+
+	found_mpu=probe_opl3sa_mpu(&cfg_mpu);
+
+	attach_opl3sa_wss(&cfg, ports);
+	return 0;
+}
+
+static void __exit cleanup_opl3sa(void)
+{
+	if(found_mpu)
+		unload_opl3sa_mpu(&cfg_mpu);
+	unload_opl3sa_wss(&cfg);
+}
+
+module_init(init_opl3sa);
+module_exit(cleanup_opl3sa);
+
+#ifndef MODULE
+static int __init setup_opl3sa(char *str)
+{
+	/* io, irq, dma, dma2, mpu_io, mpu_irq */
+	int ints[7];
+	
+	str = get_options(str, ARRAY_SIZE(ints), ints);
+	
+	io	= ints[1];
+	irq	= ints[2];
+	dma	= ints[3];
+	dma2	= ints[4];
+	mpu_io	= ints[5];
+	mpu_irq	= ints[6];
+
+	return 1;
+}
+
+__setup("opl3sa=", setup_opl3sa);
+#endif
+MODULE_LICENSE("GPL");