patch-2.1.80 linux/drivers/sound/cs4232.c

• Lines: 548
• Date: Tue Jan 20 16:44:57 1998
• Orig file: v2.1.79/linux/drivers/sound/cs4232.c
• Orig date: Sat Nov 29 11:25:10 1997

diff -u --recursive --new-file v2.1.79/linux/drivers/sound/cs4232.c linux/drivers/sound/cs4232.c
@@ -31,23 +31,22 @@
 #define KEY_PORT	0x279	/* Same as LPT1 status port */
 #define CSN_NUM		0x99	/* Just a random number */
 
-static void
-CS_OUT(unsigned char a)
+static void CS_OUT(unsigned char a)
 {
-	outb((a), KEY_PORT);
+	outb(a, KEY_PORT);
 }
+
 #define CS_OUT2(a, b)		{CS_OUT(a);CS_OUT(b);}
 #define CS_OUT3(a, b, c)	{CS_OUT(a);CS_OUT(b);CS_OUT(c);}
 
-static int      mpu_base = 0, mpu_irq = 0;
-static int      mpu_detected = 0;
+static int mpu_base = 0, mpu_irq = 0;
+static int mpu_detected = 0;
 
-int
-probe_cs4232_mpu(struct address_info *hw_config)
+int probe_cs4232_mpu(struct address_info *hw_config)
 {
-/*
- * Just write down the config values.
- */
+	/*
+	 *	Just write down the config values.
+	 */
 
 	mpu_base = hw_config->io_base;
 	mpu_irq = hw_config->irq;
@@ -55,9 +54,9 @@
 	return 1;
 }
 
-void
-attach_cs4232_mpu(struct address_info *hw_config)
+void attach_cs4232_mpu(struct address_info *hw_config)
 {
+	/* Nothing needs doing */
 }
 
 static unsigned char crystal_key[] =	/* A 32 byte magic key sequence */
@@ -68,190 +67,158 @@
 	0x09, 0x84, 0x42, 0xa1, 0xd0, 0x68, 0x34, 0x1a
 };
 
-int
-probe_cs4232(struct address_info *hw_config)
+int probe_cs4232(struct address_info *hw_config)
 {
-	int             i, n;
-	int             base = hw_config->io_base, irq = hw_config->irq;
-	int             dma1 = hw_config->dma, dma2 = hw_config->dma2;
+	int i, n;
+	int base = hw_config->io_base, irq = hw_config->irq;
+	int dma1 = hw_config->dma, dma2 = hw_config->dma2;
+	unsigned long tlimit;
 
 	static struct wait_queue *cs_sleeper = NULL;
-	static volatile struct snd_wait cs_sleep_flag =
-	{0};
-
-
-/*
- * Verify that the I/O port range is free.
- */
+	static volatile struct snd_wait cs_sleep_flag = {
+		0
+	};
+
+	/*
+	 * Verify that the I/O port range is free.
+	 */
 
 	if (check_region(base, 4))
-	  {
-		  printk("cs4232.c: I/O port 0x%03x not free\n", base);
-		  return 0;
-	  }
+	{
+		printk(KERN_ERR "cs4232.c: I/O port 0x%03x not free\n", base);
+		return 0;
+	}
 	if (ad1848_detect(hw_config->io_base, NULL, hw_config->osp))
 		return 1;	/* The card is already active */
 
-/*
- * This version of the driver doesn't use the PnP method when configuring
- * the card but a simplified method defined by Crystal. This means that
- * just one CS4232 compatible device can exist on the system. Also this
- * method conflicts with possible PnP support in the OS. For this reason 
- * driver is just a temporary kludge.
- */
-
-/*
- * Repeat initialization few times since it doesn't always succeed in
- * first time.
- */
+	/*
+	 * This version of the driver doesn't use the PnP method when configuring
+	 * the card but a simplified method defined by Crystal. This means that
+	 * just one CS4232 compatible device can exist on the system. Also this
+	 * method conflicts with possible PnP support in the OS. For this reason 
+	 * driver is just a temporary kludge.
+	 */
+
+	/*
+	 * Repeat initialization few times since it doesn't always succeed in
+	 * first time.
+	 */
 
 	for (n = 0; n < 4; n++)
-	  {
-		  cs_sleep_flag.opts = WK_NONE;
-/*
- * Wake up the card by sending a 32 byte Crystal key to the key port.
- */
-		  for (i = 0; i < 32; i++)
-			  CS_OUT(crystal_key[i]);
-
-
-		  {
-			  unsigned long   tlimit;
-
-			  if (HZ / 10)
-				  current->timeout = tlimit = jiffies + (HZ / 10);
-			  else
-				  tlimit = (unsigned long) -1;
-			  cs_sleep_flag.opts = WK_SLEEP;
-			  interruptible_sleep_on(&cs_sleeper);
-			  if (!(cs_sleep_flag.opts & WK_WAKEUP))
-			    {
-				    if (jiffies >= tlimit)
-					    cs_sleep_flag.opts |= WK_TIMEOUT;
-			    }
-			  cs_sleep_flag.opts &= ~WK_SLEEP;
-		  };		/* Delay */
-
-/*
- * Now set the CSN (Card Select Number).
- */
-
-		  CS_OUT2(0x06, CSN_NUM);
-
-
-/*
- * Then set some config bytes. First logical device 0 
- */
-
-		  CS_OUT2(0x15, 0x00);	/* Select logical device 0 (WSS/SB/FM) */
-		  CS_OUT3(0x47, (base >> 8) & 0xff, base & 0xff);	/* WSS base */
-
-		  if (check_region(0x388, 4))	/* Not free */
-			  CS_OUT3(0x48, 0x00, 0x00)	/* FM base off */
-			      else
-			  CS_OUT3(0x48, 0x03, 0x88);	/* FM base 0x388 */
-
-		  CS_OUT3(0x42, 0x00, 0x00);	/* SB base off */
-		  CS_OUT2(0x22, irq);	/* SB+WSS IRQ */
-		  CS_OUT2(0x2a, dma1);	/* SB+WSS DMA */
-
-		  if (dma2 != -1)
-			  CS_OUT2(0x25, dma2)	/* WSS DMA2 */
-			      else
-			  CS_OUT2(0x25, 4);	/* No WSS DMA2 */
-
-		  CS_OUT2(0x33, 0x01);	/* Activate logical dev 0 */
-
-
-		  {
-			  unsigned long   tlimit;
-
-			  if (HZ / 10)
-				  current->timeout = tlimit = jiffies + (HZ / 10);
-			  else
-				  tlimit = (unsigned long) -1;
-			  cs_sleep_flag.opts = WK_SLEEP;
-			  interruptible_sleep_on(&cs_sleeper);
-			  if (!(cs_sleep_flag.opts & WK_WAKEUP))
-			    {
-				    if (jiffies >= tlimit)
-					    cs_sleep_flag.opts |= WK_TIMEOUT;
-			    }
-			  cs_sleep_flag.opts &= ~WK_SLEEP;
-		  };		/* Delay */
-
-/*
- * Initialize logical device 3 (MPU)
- */
+	{
+		cs_sleep_flag.opts = WK_NONE;
+		
+		/*
+		 *	Wake up the card by sending a 32 byte Crystal key to the key port.
+		 */
+		
+		for (i = 0; i < 32; i++)
+			CS_OUT(crystal_key[i]);
+
+		current->timeout = tlimit = jiffies + (HZ / 10);
+		cs_sleep_flag.opts = WK_SLEEP;
+		interruptible_sleep_on(&cs_sleeper);
+		if (!(cs_sleep_flag.opts & WK_WAKEUP))
+		{
+			if (jiffies >= tlimit)
+				cs_sleep_flag.opts |= WK_TIMEOUT;
+		}
+		cs_sleep_flag.opts &= ~WK_SLEEP;
+
+		/*
+		 *	Now set the CSN (Card Select Number).
+		 */
+
+		CS_OUT2(0x06, CSN_NUM);
+
+		/*
+		 *	Then set some config bytes. First logical device 0 
+		 */
+
+		CS_OUT2(0x15, 0x00);	/* Select logical device 0 (WSS/SB/FM) */
+		CS_OUT3(0x47, (base >> 8) & 0xff, base & 0xff);	/* WSS base */
+
+		if (check_region(0x388, 4))	/* Not free */
+			CS_OUT3(0x48, 0x00, 0x00)	/* FM base off */
+		else
+			CS_OUT3(0x48, 0x03, 0x88);	/* FM base 0x388 */
+
+		CS_OUT3(0x42, 0x00, 0x00);	/* SB base off */
+		CS_OUT2(0x22, irq);		/* SB+WSS IRQ */
+		CS_OUT2(0x2a, dma1);		/* SB+WSS DMA */
+
+		if (dma2 != -1)
+			CS_OUT2(0x25, dma2)	/* WSS DMA2 */
+		else
+			CS_OUT2(0x25, 4);	/* No WSS DMA2 */
+
+		CS_OUT2(0x33, 0x01);	/* Activate logical dev 0 */
+
+		current->timeout = tlimit = jiffies + (HZ / 10);
+		cs_sleep_flag.opts = WK_SLEEP;
+		interruptible_sleep_on(&cs_sleeper);
+		if (!(cs_sleep_flag.opts & WK_WAKEUP))
+		{
+			if (jiffies >= tlimit)
+				cs_sleep_flag.opts |= WK_TIMEOUT;
+		}
+		cs_sleep_flag.opts &= ~WK_SLEEP;
+
+		/*
+		 * Initialize logical device 3 (MPU)
+		 */
 
 #if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
-		  if (mpu_base != 0 && mpu_irq != 0)
-		    {
-			    CS_OUT2(0x15, 0x03);	/* Select logical device 3 (MPU) */
-			    CS_OUT3(0x47, (mpu_base >> 8) & 0xff, mpu_base & 0xff);	/* MPU base */
-			    CS_OUT2(0x22, mpu_irq);	/* MPU IRQ */
-			    CS_OUT2(0x33, 0x01);	/* Activate logical dev 3 */
-		    }
+		if (mpu_base != 0 && mpu_irq != 0)
+		{
+			CS_OUT2(0x15, 0x03);	/* Select logical device 3 (MPU) */
+			CS_OUT3(0x47, (mpu_base >> 8) & 0xff, mpu_base & 0xff);	/* MPU base */
+			CS_OUT2(0x22, mpu_irq);	/* MPU IRQ */
+			CS_OUT2(0x33, 0x01);	/* Activate logical dev 3 */
+		}
 #endif
 
-/*
- * Finally activate the chip
- */
-		  CS_OUT(0x79);
-
-
-		  {
-			  unsigned long   tlimit;
-
-			  if (HZ / 5)
-				  current->timeout = tlimit = jiffies + (HZ / 5);
-			  else
-				  tlimit = (unsigned long) -1;
-			  cs_sleep_flag.opts = WK_SLEEP;
-			  interruptible_sleep_on(&cs_sleeper);
-			  if (!(cs_sleep_flag.opts & WK_WAKEUP))
-			    {
-				    if (jiffies >= tlimit)
-					    cs_sleep_flag.opts |= WK_TIMEOUT;
-			    }
-			  cs_sleep_flag.opts &= ~WK_SLEEP;
-		  };		/* Delay */
-
-/*
- * Then try to detect the codec part of the chip
- */
-
-		  if (ad1848_detect(hw_config->io_base, NULL, hw_config->osp))
-			  return 1;
-
-
-		  {
-			  unsigned long   tlimit;
-
-			  if (HZ)
-				  current->timeout = tlimit = jiffies + (HZ);
-			  else
-				  tlimit = (unsigned long) -1;
-			  cs_sleep_flag.opts = WK_SLEEP;
-			  interruptible_sleep_on(&cs_sleeper);
-			  if (!(cs_sleep_flag.opts & WK_WAKEUP))
-			    {
-				    if (jiffies >= tlimit)
-					    cs_sleep_flag.opts |= WK_TIMEOUT;
-			    }
-			  cs_sleep_flag.opts &= ~WK_SLEEP;
-		  };		/* Longer delay */
-	  }
-
+		/*
+		 * Finally activate the chip
+		 */
+		
+		CS_OUT(0x79);
+
+		current->timeout = tlimit = jiffies + (HZ / 5);
+		cs_sleep_flag.opts = WK_SLEEP;
+		interruptible_sleep_on(&cs_sleeper);
+		if (!(cs_sleep_flag.opts & WK_WAKEUP))
+		{
+			if (jiffies >= tlimit)
+				cs_sleep_flag.opts |= WK_TIMEOUT;
+		}
+		cs_sleep_flag.opts &= ~WK_SLEEP;
+
+		/*
+		 * Then try to detect the codec part of the chip
+		 */
+
+		if (ad1848_detect(hw_config->io_base, NULL, hw_config->osp))
+			return 1;
+
+		current->timeout = tlimit = jiffies + (HZ);
+		cs_sleep_flag.opts = WK_SLEEP;
+		interruptible_sleep_on(&cs_sleeper);
+		if (!(cs_sleep_flag.opts & WK_WAKEUP))
+		{
+			if (jiffies >= tlimit)
+				cs_sleep_flag.opts |= WK_TIMEOUT;
+		}
+		cs_sleep_flag.opts &= ~WK_SLEEP;
+	}
 	return 0;
 }
 
-void
-attach_cs4232(struct address_info *hw_config)
+void attach_cs4232(struct address_info *hw_config)
 {
-	int             base = hw_config->io_base, irq = hw_config->irq;
-	int             dma1 = hw_config->dma, dma2 = hw_config->dma2;
-	int             old_num_mixers = num_mixers;
+	int base = hw_config->io_base, irq = hw_config->irq;
+	int dma1 = hw_config->dma, dma2 = hw_config->dma2;
+	int old_num_mixers = num_mixers;
 
 	if (dma2 == -1)
 		dma2 = dma1;
@@ -264,45 +231,47 @@
 					  hw_config->osp);
 
 	if (num_mixers > old_num_mixers)
-	  {			/* Assume the mixer map is as suggested in the CS4232 databook */
-		  AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_LINE);
-		  AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_CD);
-		  AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_SYNTH);		/* FM synth */
-	  }
+	{	
+		/* Assume the mixer map is as suggested in the CS4232 databook */
+		AD1848_REROUTE(SOUND_MIXER_LINE1, SOUND_MIXER_LINE);
+		AD1848_REROUTE(SOUND_MIXER_LINE2, SOUND_MIXER_CD);
+		AD1848_REROUTE(SOUND_MIXER_LINE3, SOUND_MIXER_SYNTH);		/* FM synth */
+	}
 #if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
 	if (mpu_base != 0 && mpu_irq != 0)
-	  {
-		  static struct address_info hw_config2 =
-		  {0};		/* Ensure it's initialized */
-
-		  hw_config2.io_base = mpu_base;
-		  hw_config2.irq = mpu_irq;
-		  hw_config2.dma = -1;
-		  hw_config2.dma2 = -1;
-		  hw_config2.always_detect = 0;
-		  hw_config2.name = NULL;
-		  hw_config2.driver_use_1 = 0;
-		  hw_config2.driver_use_2 = 0;
-		  hw_config2.card_subtype = 0;
-
-		  if (probe_uart401(&hw_config2))
-		    {
-			    mpu_detected = 1;
-			    attach_uart401(&hw_config2);
-		  } else
-		    {
-			    mpu_base = mpu_irq = 0;
-		    }
-		  hw_config->slots[1] = hw_config2.slots[1];
-	  }
+	{
+		static struct address_info hw_config2 = {
+			0
+		};		/* Ensure it's initialized */
+
+		hw_config2.io_base = mpu_base;
+		hw_config2.irq = mpu_irq;
+		hw_config2.dma = -1;
+		hw_config2.dma2 = -1;
+		hw_config2.always_detect = 0;
+		hw_config2.name = NULL;
+		hw_config2.driver_use_1 = 0;
+		hw_config2.driver_use_2 = 0;
+		hw_config2.card_subtype = 0;
+
+		if (probe_uart401(&hw_config2))
+		{
+			mpu_detected = 1;
+			attach_uart401(&hw_config2);
+		}
+		else
+		{
+			mpu_base = mpu_irq = 0;
+		}
+		hw_config->slots[1] = hw_config2.slots[1];
+	}
 #endif
 }
 
-void
-unload_cs4232(struct address_info *hw_config)
+void unload_cs4232(struct address_info *hw_config)
 {
-	int             base = hw_config->io_base, irq = hw_config->irq;
-	int             dma1 = hw_config->dma, dma2 = hw_config->dma2;
+	int base = hw_config->io_base, irq = hw_config->irq;
+	int dma1 = hw_config->dma, dma2 = hw_config->dma2;
 
 	if (dma2 == -1)
 		dma2 = dma1;
@@ -315,28 +284,29 @@
 	sound_unload_audiodev(hw_config->slots[0]);
 #if defined(CONFIG_UART401) && defined(CONFIG_MIDI)
 	if (mpu_base != 0 && mpu_irq != 0 && mpu_detected)
-	  {
-		  static struct address_info hw_config2 =
-		  {0};		/* Ensure it's initialized */
-
-		  hw_config2.io_base = mpu_base;
-		  hw_config2.irq = mpu_irq;
-		  hw_config2.dma = -1;
-		  hw_config2.dma2 = -1;
-		  hw_config2.always_detect = 0;
-		  hw_config2.name = NULL;
-		  hw_config2.driver_use_1 = 0;
-		  hw_config2.driver_use_2 = 0;
-		  hw_config2.card_subtype = 0;
-		  hw_config2.slots[1] = hw_config->slots[1];
+	{
+		static struct address_info hw_config2 =
+		{
+			0
+		};		/* Ensure it's initialized */
+
+		hw_config2.io_base = mpu_base;
+		hw_config2.irq = mpu_irq;
+		hw_config2.dma = -1;
+		hw_config2.dma2 = -1;
+		hw_config2.always_detect = 0;
+		hw_config2.name = NULL;
+		hw_config2.driver_use_1 = 0;
+		hw_config2.driver_use_2 = 0;
+		hw_config2.card_subtype = 0;
+		hw_config2.slots[1] = hw_config->slots[1];
 
-		  unload_uart401(&hw_config2);
-	  }
+		unload_uart401(&hw_config2);
+	}
 #endif
 }
 
-void
-unload_cs4232_mpu(struct address_info *hw_config)
+void unload_cs4232_mpu(struct address_info *hw_config)
 {
 	/* Not required. Handled by cs4232_unload */
 }
@@ -348,21 +318,26 @@
 int             dma = -1;
 int             dma2 = -1;
 
+MODULE_PARM(io,"i");
+MODULE_PARM(irq,"i");
+MODULE_PARM(dma,"i");
+MODULE_PARM(dma2,"i");
+
 struct address_info cfg;
 
 /*
- *    Install a CS4232 based card. Need to have ad1848 and mpu401
- *      loaded ready.
+ *	Install a CS4232 based card. Need to have ad1848 and mpu401
+ *	loaded ready.
  */
 
 int
 init_module(void)
 {
 	if (io == -1 || irq == -1 || dma == -1 || dma2 == -1)
-	  {
-		  printk(KERN_ERR "cs4232: dma, dma2, irq and io must be set.\n");
-		  return -EINVAL;
-	  }
+	{
+		printk(KERN_ERR "cs4232: dma, dma2, irq and io must be set.\n");
+		return -EINVAL;
+	}
 	cfg.io_base = io;
 	cfg.irq = irq;
 	cfg.dma = dma;
@@ -379,13 +354,12 @@
 	return 0;
 }
 
-void
-cleanup_module(void)
+void cleanup_module(void)
 {
 	unload_cs4232_mpu(&cfg);
 	unload_cs4232(&cfg);
 	SOUND_LOCK_END;
 }
-#endif
 
+#endif
 #endif