Merge with Linux 2.1.67.

1 files changed, 277 insertions, 0 deletions

diff --git a/drivers/sound/opl3sa.c b/drivers/sound/opl3sa.c
new file mode 100644
index 000000000..39adf4357
--- /dev/null
+++ b/drivers/sound/opl3sa.c
@@ -0,0 +1,277 @@
+/*
+ * sound/Xopl3sa.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.
+ */
+#include <linux/config.h>
+
+#undef  SB_OK
+
+#include "sound_config.h"
+#ifdef SB_OK
+#include "sb.h"
+static int      sb_initialized = 0;
+
+#endif
+
+#ifdef CONFIG_OPL3SA1
+
+static int      kilroy_was_here = 0;	/* Don't detect twice */
+static int      mpu_initialized = 0;
+
+static int     *opl3sa_osp = NULL;
+
+static unsigned char
+opl3sa_read(int addr)
+{
+	unsigned long   flags;
+	unsigned char   tmp;
+
+	save_flags(flags);
+	cli();
+	outb((0x1d), 0xf86);	/* password */
+	outb(((unsigned char) addr), 0xf86);	/* address */
+	tmp = inb(0xf87);	/* data */
+	restore_flags(flags);
+
+	return tmp;
+}
+
+static void
+opl3sa_write(int addr, int data)
+{
+	unsigned long   flags;
+
+	save_flags(flags);
+	cli();
+	outb((0x1d), 0xf86);	/* password */
+	outb(((unsigned char) addr), 0xf86);	/* address */
+	outb(((unsigned char) data), 0xf87);	/* data */
+	restore_flags(flags);
+}
+
+static int
+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
+ */
+
+int
+probe_opl3sa_wss(struct address_info *hw_config)
+{
+	int             ret;
+	unsigned char   tmp = 0x24;	/* WSS enable */
+
+	if (check_region(0xf86, 2))	/* Control port is busy */
+		return 0;
+	/*
+	   * 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 (check_region(hw_config->io_base, 8))
+	  {
+		  printk("OPL3-SA: MSS I/O port conflict (%x)\n", hw_config->io_base);
+		  return 0;
+	  }
+	opl3sa_osp = hw_config->osp;
+
+	if (!opl3sa_detect())
+	  {
+		  printk("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("OSS: Unsupported OPL3-SA/WSS base %x\n", hw_config->io_base);
+		  return 0;
+	  }
+
+	opl3sa_write(0x01, tmp);	/* WSS setup register */
+	kilroy_was_here = 1;
+
+	ret = probe_ms_sound(hw_config);
+	if (ret)
+		request_region(0xf86, 2, "OPL3-SA");
+
+	return ret;
+}
+
+void
+attach_opl3sa_wss(struct address_info *hw_config)
+{
+	int             nm = num_mixers;
+
+	attach_ms_sound(hw_config);
+	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);
+	  }
+}
+
+
+void
+attach_opl3sa_mpu(struct address_info *hw_config)
+{
+#if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
+	hw_config->name = "OPL3-SA (MPU401)";
+	attach_uart401(hw_config);
+#endif
+}
+
+int
+probe_opl3sa_mpu(struct address_info *hw_config)
+{
+#if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
+	unsigned char   conf;
+	static char     irq_bits[] =
+	{-1, -1, -1, -1, -1, 1, -1, 2, -1, 3, 4};
+
+	if (!kilroy_was_here)
+	  {
+		  return 0;	/* OPL3-SA has not been detected earlier */
+	  }
+	if (mpu_initialized)
+	  {
+		  DDB(printk("OPL3-SA: MPU mode already initialized\n"));
+		  return 0;
+	  }
+	if (check_region(hw_config->io_base, 4))
+	  {
+		  printk("OPL3-SA: MPU I/O port conflict (%x)\n", hw_config->io_base);
+		  return 0;
+	  }
+	if (hw_config->irq > 10)
+	  {
+		  printk("OPL3-SA: Bad MPU IRQ %d\n", hw_config->irq);
+		  return 0;
+	  }
+	if (irq_bits[hw_config->irq] == -1)
+	  {
+		  printk("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);
+
+	mpu_initialized = 1;
+
+	return probe_uart401(hw_config);
+#else
+	return 0;
+#endif
+}
+
+void
+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);
+}
+
+void
+unload_opl3sa_mpu(struct address_info *hw_config)
+{
+#if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
+	unload_uart401(hw_config);
+#endif
+}
+#ifdef SB_OK
+void
+unload_opl3sa_sb(struct address_info *hw_config)
+{
+#ifdef CONFIG_SBDSP
+	sb_dsp_unload(hw_config);
+#endif
+}
+#endif
+
+
+#endif