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, 293 insertions, 0 deletions

diff --git a/sound/oss/gus_card.c b/sound/oss/gus_card.c
new file mode 100644
index 000000000000..dbb29771e2bb
--- /dev/null
+++ b/sound/oss/gus_card.c
@@ -0,0 +1,293 @@
+/*
+ * sound/gus_card.c
+ *
+ * Detection routine for the Gravis Ultrasound.
+ *
+ * Copyright (C) by Hannu Savolainen 1993-1997
+ *
+ *
+ * Frank van de Pol : Fixed GUS MAX interrupt handling, enabled simultanious
+ *                    usage of CS4231A codec, GUS wave and MIDI for GUS MAX.
+ * Christoph Hellwig: Adapted to module_init/module_exit, simple cleanups.
+ *
+ * Status:
+ *              Tested... 
+ */
+      
+ 
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+
+#include "sound_config.h"
+
+#include "gus.h"
+#include "gus_hw.h"
+
+irqreturn_t gusintr(int irq, void *dev_id, struct pt_regs *dummy);
+
+int             gus_base = 0, gus_irq = 0, gus_dma = 0;
+int             gus_no_wave_dma = 0; 
+extern int      gus_wave_volume;
+extern int      gus_pcm_volume;
+extern int      have_gus_max;
+int             gus_pnp_flag = 0;
+#ifdef CONFIG_SOUND_GUS16
+static int      db16;	/* Has a Gus16 AD1848 on it */
+#endif
+
+static void __init attach_gus(struct address_info *hw_config)
+{
+	gus_wave_init(hw_config);
+
+	if (sound_alloc_dma(hw_config->dma, "GUS"))
+		printk(KERN_ERR "gus_card.c: Can't allocate DMA channel %d\n", hw_config->dma);
+	if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
+		if (sound_alloc_dma(hw_config->dma2, "GUS(2)"))
+			printk(KERN_ERR "gus_card.c: Can't allocate DMA channel %d\n", hw_config->dma2);
+	gus_midi_init(hw_config);
+	if(request_irq(hw_config->irq, gusintr, 0,  "Gravis Ultrasound", hw_config)<0)
+		printk(KERN_ERR "gus_card.c: Unable to allocate IRQ %d\n", hw_config->irq);
+
+	return;
+}
+
+static int __init probe_gus(struct address_info *hw_config)
+{
+	int             irq;
+	int             io_addr;
+
+	if (hw_config->card_subtype == 1)
+		gus_pnp_flag = 1;
+
+	irq = hw_config->irq;
+
+	if (hw_config->card_subtype == 0)	/* GUS/MAX/ACE */
+		if (irq != 3 && irq != 5 && irq != 7 && irq != 9 &&
+		    irq != 11 && irq != 12 && irq != 15)
+		  {
+			  printk(KERN_ERR "GUS: Unsupported IRQ %d\n", irq);
+			  return 0;
+		  }
+	if (gus_wave_detect(hw_config->io_base))
+		return 1;
+
+#ifndef EXCLUDE_GUS_IODETECT
+
+	/*
+	 * Look at the possible base addresses (0x2X0, X=1, 2, 3, 4, 5, 6)
+	 */
+
+	for (io_addr = 0x210; io_addr <= 0x260; io_addr += 0x10) {
+		if (io_addr == hw_config->io_base)	/* Already tested */
+			continue;
+		if (gus_wave_detect(io_addr)) {
+			hw_config->io_base = io_addr;
+			return 1;
+		}
+	}
+#endif
+
+	printk("NO GUS card found !\n");
+	return 0;
+}
+
+static void __exit unload_gus(struct address_info *hw_config)
+{
+	DDB(printk("unload_gus(%x)\n", hw_config->io_base));
+
+	gus_wave_unload(hw_config);
+
+	release_region(hw_config->io_base, 16);
+	release_region(hw_config->io_base + 0x100, 12);		/* 0x10c-> is MAX */
+	free_irq(hw_config->irq, hw_config);
+
+	sound_free_dma(hw_config->dma);
+
+	if (hw_config->dma2 != -1 && hw_config->dma2 != hw_config->dma)
+		sound_free_dma(hw_config->dma2);
+}
+
+irqreturn_t gusintr(int irq, void *dev_id, struct pt_regs *dummy)
+{
+	unsigned char src;
+	extern int gus_timer_enabled;
+	int handled = 0;
+
+#ifdef CONFIG_SOUND_GUSMAX
+	if (have_gus_max) {
+		struct address_info *hw_config = dev_id;
+		adintr(irq, (void *)hw_config->slots[1], NULL);
+	}
+#endif
+#ifdef CONFIG_SOUND_GUS16
+	if (db16) {
+		struct address_info *hw_config = dev_id;
+		adintr(irq, (void *)hw_config->slots[3], NULL);
+	}
+#endif
+
+	while (1)
+	{
+		if (!(src = inb(u_IrqStatus)))
+			break;
+		handled = 1;
+		if (src & DMA_TC_IRQ)
+		{
+			guswave_dma_irq();
+		}
+		if (src & (MIDI_TX_IRQ | MIDI_RX_IRQ))
+		{
+			gus_midi_interrupt(0);
+		}
+		if (src & (GF1_TIMER1_IRQ | GF1_TIMER2_IRQ))
+		{
+			if (gus_timer_enabled)
+				sound_timer_interrupt();
+			gus_write8(0x45, 0);	/* Ack IRQ */
+			gus_timer_command(4, 0x80);		/* Reset IRQ flags */
+		}
+		if (src & (WAVETABLE_IRQ | ENVELOPE_IRQ))
+			gus_voice_irq();
+	}
+	return IRQ_RETVAL(handled);
+}
+
+/*
+ *	Some extra code for the 16 bit sampling option
+ */
+
+#ifdef CONFIG_SOUND_GUS16
+
+static int __init init_gus_db16(struct address_info *hw_config)
+{
+	struct resource *ports;
+
+	ports = request_region(hw_config->io_base, 4, "ad1848");
+	if (!ports)
+		return 0;
+
+	if (!ad1848_detect(ports, NULL, hw_config->osp)) {
+		release_region(hw_config->io_base, 4);
+		return 0;
+	}
+
+	gus_pcm_volume = 100;
+	gus_wave_volume = 90;
+
+	hw_config->slots[3] = ad1848_init("GUS 16 bit sampling", ports,
+					  hw_config->irq,
+					  hw_config->dma,
+					  hw_config->dma, 0,
+					  hw_config->osp,
+					  THIS_MODULE);
+	return 1;
+}
+
+static void __exit unload_gus_db16(struct address_info *hw_config)
+{
+
+	ad1848_unload(hw_config->io_base,
+		      hw_config->irq,
+		      hw_config->dma,
+		      hw_config->dma, 0);
+	sound_unload_audiodev(hw_config->slots[3]);
+}
+#endif
+
+#ifdef CONFIG_SOUND_GUS16
+static int gus16;
+#endif
+#ifdef CONFIG_SOUND_GUSMAX
+static int no_wave_dma;   /* Set if no dma is to be used for the
+                                   wave table (GF1 chip) */
+#endif
+
+
+/*
+ *    Note DMA2 of -1 has the right meaning in the GUS driver as well
+ *      as here. 
+ */
+
+static struct address_info cfg;
+
+static int __initdata io = -1;
+static int __initdata irq = -1;
+static int __initdata dma = -1;
+static int __initdata dma16 = -1;	/* Set this for modules that need it */
+static int __initdata type = 0;		/* 1 for PnP */
+
+module_param(io, int, 0);
+module_param(irq, int, 0);
+module_param(dma, int, 0);
+module_param(dma16, int, 0);
+module_param(type, int, 0);
+#ifdef CONFIG_SOUND_GUSMAX
+module_param(no_wave_dma, int, 0);
+#endif
+#ifdef CONFIG_SOUND_GUS16
+module_param(db16, int, 0);
+module_param(gus16, int, 0);
+#endif
+MODULE_LICENSE("GPL");
+
+static int __init init_gus(void)
+{
+	printk(KERN_INFO "Gravis Ultrasound audio driver Copyright (C) by Hannu Savolainen 1993-1996\n");
+
+	cfg.io_base = io;
+	cfg.irq = irq;
+	cfg.dma = dma;
+	cfg.dma2 = dma16;
+	cfg.card_subtype = type;
+#ifdef CONFIG_SOUND_GUSMAX
+	gus_no_wave_dma = no_wave_dma;
+#endif
+
+	if (cfg.io_base == -1 || cfg.dma == -1 || cfg.irq == -1) {
+		printk(KERN_ERR "I/O, IRQ, and DMA are mandatory\n");
+		return -EINVAL;
+	}
+
+#ifdef CONFIG_SOUND_GUS16
+	if (gus16 && init_gus_db16(&cfg))
+		db16 = 1;
+#endif
+	if (!probe_gus(&cfg))
+		return -ENODEV;
+	attach_gus(&cfg);
+
+	return 0;
+}
+
+static void __exit cleanup_gus(void)
+{
+#ifdef CONFIG_SOUND_GUS16
+	if (db16)
+		unload_gus_db16(&cfg);
+#endif
+	unload_gus(&cfg);
+}
+
+module_init(init_gus);
+module_exit(cleanup_gus);
+
+#ifndef MODULE
+static int __init setup_gus(char *str)
+{
+	/* io, irq, dma, dma2 */
+	int ints[5];
+	
+	str = get_options(str, ARRAY_SIZE(ints), ints);
+	
+	io	= ints[1];
+	irq	= ints[2];
+	dma	= ints[3];
+	dma16	= ints[4];
+
+	return 1;
+}
+
+__setup("gus=", setup_gus);
+#endif