Latest bktr driver from FreeBSD; thanks to Andres Gunnarsson

<andreas@crt.se> for testing.

1 files changed, 1268 insertions, 0 deletions

diff --git a/sys/dev/pci/bktr/bktr_card.c b/sys/dev/pci/bktr/bktr_card.c
new file mode 100644
index 00000000000..843aaf49330
--- /dev/null
+++ b/sys/dev/pci/bktr/bktr_card.c
@@ -0,0 +1,1268 @@
+/*	$OpenBSD: bktr_card.c,v 1.1 2001/03/28 03:27:09 fgsch Exp $	*/
+/* $FreeBSD: src/sys/dev/bktr/bktr_card.c,v 1.16 2000/10/31 13:09:56 roger Exp $ */
+
+/*
+ * This is part of the Driver for Video Capture Cards (Frame grabbers)
+ * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
+ * chipset.
+ * Copyright Roger Hardiman and Amancio Hasty.
+ *
+ * bktr_card : This deals with identifying TV cards.
+ *               trying to find the card make and model of card.
+ *               trying to find the type of tuner fitted.
+ *               reading the configuration EEPROM.
+ *               locating i2c devices.
+ *
+ */
+
+/*
+ * 1. Redistributions of source code must retain the
+ * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Amancio Hasty and
+ *      Roger Hardiman
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __OpenBSD__
+#include "opt_bktr.h"		/* Include any kernel config options */
+#endif
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/vnode.h>
+
+#ifdef __FreeBSD__
+
+#if (__FreeBSD_version < 500000)
+#include <machine/clock.h>              /* for DELAY */
+#endif
+
+#include <pci/pcivar.h>
+
+#if (__FreeBSD_version >=300000)
+#include <machine/bus_memio.h>	/* for bus space */
+#include <machine/bus.h>
+#include <sys/bus.h>
+#endif
+#endif
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#include <dev/ic/bt8xx.h>	/* NetBSD location for .h files */
+#include <dev/pci/bktr/bktr_reg.h>
+#include <dev/pci/bktr/bktr_core.h>
+#include <dev/pci/bktr/bktr_tuner.h>
+#include <dev/pci/bktr/bktr_card.h>
+#include <dev/pci/bktr/bktr_audio.h>
+#else
+#include <machine/ioctl_meteor.h>	/* Traditional location for .h files */
+#include <machine/ioctl_bt848.h>        /* extensions to ioctl_meteor.h */
+#include <dev/bktr/bktr_reg.h>
+#include <dev/bktr/bktr_core.h>
+#include <dev/bktr/bktr_tuner.h>
+#include <dev/bktr/bktr_card.h>
+#include <dev/bktr/bktr_audio.h>
+#endif
+
+/* Include the PCI Vendor definitions */
+#ifdef __NetBSD__
+#include <dev/pci/pcidevs.h>
+#include <dev/pci/pcireg.h>
+#endif
+
+/* Various defines */
+#define HAUP_REMOTE_INT_WADDR   0x30
+#define HAUP_REMOTE_INT_RADDR   0x31
+ 
+#define HAUP_REMOTE_EXT_WADDR   0x34
+#define HAUP_REMOTE_EXT_RADDR   0x35
+
+/* address of BTSC/SAP decoder chip */
+#define TDA9850_WADDR           0xb6 
+#define TDA9850_RADDR           0xb7
+ 
+/* address of MSP3400C chip */
+#define MSP3400C_WADDR          0x80
+#define MSP3400C_RADDR          0x81
+ 
+/* address of DPL3518A chip */
+#define DPL3518A_WADDR          0x84
+#define DPL3518A_RADDR          0x85
+ 
+/* EEProm (128 * 8) on an STB card */
+#define X24C01_WADDR            0xae
+#define X24C01_RADDR            0xaf
+ 
+ 
+/* EEProm (256 * 8) on a Hauppauge card */
+/* and on most BT878s cards to store the sub-system vendor id */
+#define PFC8582_WADDR           0xa0
+#define PFC8582_RADDR		0xa1
+
+#if BKTR_SYSTEM_DEFAULT == BROOKTREE_PAL
+#define DEFAULT_TUNER   PHILIPS_PALI
+#else
+#define DEFAULT_TUNER   PHILIPS_NTSC
+#endif
+
+
+
+
+/*
+ * the data for each type of card
+ *
+ * Note:
+ *   these entried MUST be kept in the order defined by the CARD_XXX defines!
+ */
+static const struct CARDTYPE cards[] = {
+
+	{  CARD_UNKNOWN,			/* the card id */
+	  "Unknown",				/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,					/* dbx unknown */
+	   0,
+	   0,
+	   0,					/* EEProm unknown */
+	   0,					/* EEProm unknown */
+	   { 0, 0, 0, 0, 0 },
+	   0 },					/* GPIO mask */
+
+	{  CARD_MIRO,				/* the card id */
+	  "Pinnacle/Miro TV",			/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,					/* dbx unknown */
+	   0,
+	   0,
+	   0,					/* EEProm unknown */
+	   0,					/* size unknown */
+	   { 0x02, 0x01, 0x00, 0x0a, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_HAUPPAUGE,			/* the card id */
+	  "Hauppauge WinCast/TV",		/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,					/* dbx is optional */
+	   0,
+	   0,
+	   PFC8582_WADDR,			/* EEProm type */
+	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
+	   { 0x00, 0x02, 0x01, 0x04, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_STB,				/* the card id */
+	  "STB TV/PCI",				/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,					/* dbx is optional */
+	   0,
+	   0,
+	   X24C01_WADDR,			/* EEProm type */
+	   (u_char)(128 / EEPROMBLOCKSIZE),	/* 128 bytes */
+	   { 0x00, 0x01, 0x02, 0x02, 1 }, 	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_INTEL,				/* the card id */
+	  "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,
+	   0,
+	   0,
+	   0,
+	   0,
+	   { 0, 0, 0, 0, 0 }, 			/* audio MUX values */
+	   0x00 },				/* GPIO mask */
+
+	{  CARD_IMS_TURBO,			/* the card id */
+	  "IMS TV Turbo",			/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,					/* the tuner i2c address */
+	   0,					/* dbx is optional */
+	   0,
+	   0,
+	   PFC8582_WADDR,			/* EEProm type */
+	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
+	   { 0x01, 0x02, 0x01, 0x00, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+        {  CARD_AVER_MEDIA,			/* the card id */
+          "AVer Media TV/FM",                   /* the 'name' */
+           NULL,                                /* the tuner */
+	   0,					/* the tuner i2c address */
+           0,                                   /* dbx is optional */
+           0,
+	   0,
+           0,                                   /* EEProm type */
+           0,                                   /* EEProm size */
+           { 0x0c, 0x08, 0x04, 0x00, 1 },	/* audio MUX values */
+	   0x1f },				/* GPIO mask */
+
+        {  CARD_OSPREY,				/* the card id */
+          "MMAC Osprey",                   	/* the 'name' */
+           NULL,                                /* the tuner */
+	   0,					/* the tuner i2c address */
+           0,                                   /* dbx is optional */
+	   0,
+           0,
+	   PFC8582_WADDR,			/* EEProm type */
+	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
+           { 0x00, 0x00, 0x00, 0x00, 0 },	/* audio MUX values */
+	   0 },					/* GPIO mask */
+
+        {  CARD_NEC_PK,                         /* the card id */
+          "NEC PK-UG-X017",                     /* the 'name' */
+           NULL,                                /* the tuner */
+           0,                                   /* the tuner i2c address */
+           0,                                   /* dbx is optional */
+	   0,
+           0,
+           0,                                   /* EEProm type */
+           0,                                   /* EEProm size */
+           { 0x01, 0x02, 0x01, 0x00, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+        {  CARD_IO_GV,                          /* the card id */
+          "I/O DATA GV-BCTV2/PCI",              /* the 'name' */
+           NULL,                                /* the tuner */
+           0,                                   /* the tuner i2c address */
+           0,                                   /* dbx is optional */
+           0,
+	   0,
+           0,                                   /* EEProm type */
+           0,                                   /* EEProm size */
+           { 0x00, 0x00, 0x00, 0x00, 1 },	/* Has special MUX handler */
+	   0x0f },				/* GPIO mask */
+
+        {  CARD_FLYVIDEO,			/* the card id */
+          "FlyVideo",				/* the 'name' */
+           NULL,				/* the tuner */
+           0,					/* the tuner i2c address */
+           0,					/* dbx is optional */
+           0,					/* msp34xx is optional */
+           0,					/* dpl3518a is optional */
+	   0xac,				/* EEProm type */
+	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
+           { 0x000, 0x800, 0x400, 0x8dff00, 1 },/* audio MUX values */
+	   0x8dff00 },				/* GPIO mask */
+
+	{  CARD_ZOLTRIX,			/* the card id */
+	  "Zoltrix",				/* the 'name' */
+           NULL,				/* the tuner */
+           0,					/* the tuner i2c address */
+           0,					/* dbx is optional */
+           0,					/* msp34xx is optional */
+           0,					/* dpl3518a is optional */
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+	   { 0x04, 0x01, 0x00, 0x0a, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_KISS,				/* the card id */
+	  "KISS TV/FM PCI",			/* the 'name' */
+           NULL,				/* the tuner */
+           0,					/* the tuner i2c address */
+           0,					/* dbx is optional */
+           0,					/* msp34xx is optional */
+           0,					/* dpl3518a is optional */
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+	   { 0x0c, 0x00, 0x0b, 0x0b, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_VIDEO_HIGHWAY_XTREME,		/* the card id */
+	  "Video Highway Xtreme",		/* the 'name' */
+           NULL,				/* the tuner */
+	   0,
+	   0,
+	   0,
+	   0,
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+	   { 0x00, 0x02, 0x01, 0x04, 1 },	/* audio MUX values */
+	   0x0f },				/* GPIO mask */
+
+	{  CARD_ASKEY_DYNALINK_MAGIC_TVIEW,	/* the card id */
+	  "Askey/Dynalink Magic TView",		/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,
+	   0,
+	   0,
+	   0,
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+	   { 0x400, 0xE00, 0x400, 0xC00, 1 },	/* audio MUX values */
+	   0xE00 },				/* GPIO mask */
+
+	{  CARD_LEADTEK,			/* the card id */
+	  "Leadtek Winfast TV 2000",		/* the 'name' */
+	   NULL,				/* the tuner */
+	   0,
+	   0,
+	   0,
+	   0,
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+	   /* Tuner, Extern, Intern, Mute, Enabled */
+	   { 0x621000, 0x621000, 0x621000, 0xE21000, 1 }, /* audio MUX values */
+	   0xfff000 },				/* GPIO mask */
+
+        {  CARD_TERRATVPLUS,                    /* the card id */
+          "TerraTVplus",                        /* the 'name' */
+           NULL,                                /* the tuner */
+	   0,
+	   0,
+	   0,
+	   0,
+	   0,					/* EEProm type */
+	   0,					/* EEProm size */
+           { 0x20000, 0x00000, 0x30000, 0x40000, 1 }, /* audio MUX values*/
+           0x70000 },                           /* GPIO mask */
+
+};
+
+struct bt848_card_sig bt848_card_signature[1]= {
+  /* IMS TURBO TV : card 5 */
+    {  5,9, {00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 00, 00}}
+
+
+};
+
+
+/*
+ * Write to the configuration EEPROM on the card.
+ * This is dangerous and will mess up your card. Therefore it is not
+ * implemented.
+ */
+int      
+writeEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
+{
+        return( -1 );
+}
+
+/*
+ * Read the contents of the configuration EEPROM on the card.
+ * (This is not fitted to all makes of card. All Hauppauge cards have them
+ * and so do newer Bt878 based cards.
+ */
+int
+readEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
+{
+	int	x;
+	int	addr;
+	int	max;
+	int	byte;
+
+	/* get the address of the EEProm */
+	addr = (int)(bktr->card.eepromAddr & 0xff);
+	if ( addr == 0 )
+		return( -1 );
+
+	max = (int)(bktr->card.eepromSize * EEPROMBLOCKSIZE);
+	if ( (offset + count) > max )
+		return( -1 );
+
+	/* set the start address */
+	if ( i2cWrite( bktr, addr, offset, -1 ) == -1 )
+		return( -1 );
+
+	/* the read cycle */
+	for ( x = 0; x < count; ++x ) {
+		if ( (byte = i2cRead( bktr, (addr | 1) )) == -1 )
+			return( -1 );
+		data[ x ] = byte;
+	}
+
+	return( 0 );
+}
+
+
+#define ABSENT		(-1)
+
+/*
+ * get a signature of the card
+ * read all 128 possible i2c read addresses from 0x01 thru 0xff
+ * build a bit array with a 1 bit for each i2c device that responds
+ *
+ * XXX FIXME: use offset & count args
+ */
+int
+signCard( bktr_ptr_t bktr, int offset, int count, u_char* sig )
+{
+	int	x;
+
+	for ( x = 0; x < 16; ++x )
+		sig[ x ] = 0;
+
+	for ( x = 0; x < count; ++x ) {
+		if ( i2cRead( bktr, (2 * x) + 1 ) != ABSENT ) {
+			sig[ x / 8 ] |= (1 << (x % 8) );
+		}
+	}
+
+	return( 0 );
+}
+
+
+/*
+ * check_for_i2c_devices.
+ * Some BT848 cards have no tuner and no additional i2c devices
+ * eg stereo decoder. These are used for video conferencing or capture from
+ * a video camera. (eg VideoLogic Captivator PCI, Intel SmartCapture card).
+ *
+ * Determine if there are any i2c devices present. There are none present if
+ *  a) reading from all 128 devices returns ABSENT (-1) for each one
+ *     (eg VideoLogic Captivator PCI with BT848)
+ *  b) reading from all 128 devices returns 0 for each one
+ *     (eg VideoLogic Captivator PCI rev. 2F with BT848A)
+ */
+static int check_for_i2c_devices( bktr_ptr_t bktr ){
+  int x, temp_read;
+  int i2c_all_0 = 1;
+  int i2c_all_absent = 1;
+  for ( x = 0; x < 128; ++x ) {
+    temp_read = i2cRead( bktr, (2 * x) + 1 );
+    if (temp_read != 0)      i2c_all_0 = 0;
+    if (temp_read != ABSENT) i2c_all_absent = 0;
+  }
+
+  if ((i2c_all_0) || (i2c_all_absent)) return 0;
+  else return 1;
+}
+
+
+/*
+ * Temic/Philips datasheets say tuners can be at i2c addresses 0xc0, 0xc2,
+ * 0xc4 or 0xc6, settable by links on the tuner.
+ * Determine the actual address used on the TV card by probing read addresses.
+ */
+static int locate_tuner_address( bktr_ptr_t bktr) {
+  if (i2cRead( bktr, 0xc1) != ABSENT) return 0xc0;
+  if (i2cRead( bktr, 0xc3) != ABSENT) return 0xc2;
+  if (i2cRead( bktr, 0xc5) != ABSENT) return 0xc4;
+  if (i2cRead( bktr, 0xc7) != ABSENT) return 0xc6;
+  return -1; /* no tuner found */
+}
+
+ 
+/*
+ * Search for a configuration EEPROM on the i2c bus by looking at i2c addresses
+ * where EEPROMs are usually found.
+ * On some cards, the EEPROM appears in several locations, but all in the
+ * range 0xa0 to 0xae.
+ */
+static int locate_eeprom_address( bktr_ptr_t bktr) {
+  if (i2cRead( bktr, 0xa0) != ABSENT) return 0xa0;
+  if (i2cRead( bktr, 0xac) != ABSENT) return 0xac;
+  if (i2cRead( bktr, 0xae) != ABSENT) return 0xae;
+  return -1; /* no eeprom found */
+}
+
+
+/*
+ * determine the card brand/model
+ * BKTR_OVERRIDE_CARD, BKTR_OVERRIDE_TUNER, BKTR_OVERRIDE_DBX and
+ * BKTR_OVERRIDE_MSP can be used to select a specific device,
+ * regardless of the autodetection and i2c device checks.
+ *
+ * The scheme used for probing cards faces these problems:
+ *  It is impossible to work out which type of tuner is actually fitted,
+ *  (the driver cannot tell if the Tuner is PAL or NTSC, Temic or Philips)
+ *  It is impossible to determine what audio-mux hardware is connected.
+ *  It is impossible to determine if there is extra hardware connected to the
+ *  GPIO pins  (eg radio chips or MSP34xx reset logic)
+ *
+ * However some makes of card (eg Hauppauge) come with a configuration eeprom
+ * which tells us the make of the card. Most eeproms also tell us the
+ * tuner type and other features of the the cards.
+ *
+ * The current probe code works as follows
+ * A) If the card uses a Bt878/879:
+ *   1) Read the sub-system vendor id from the configuration EEPROM.
+ *      Select the required tuner, audio mux arrangement and any other
+ *      onboard features. If this fails, move to step B.
+ * B) If it card uses a Bt848, 848A, 849A or an unknown Bt878/879:
+ *   1) Look for I2C devices. If there are none fitted, it is an Intel or
+ *      VideoLogic cards.
+ *   2) Look for a configuration EEPROM.
+ *   2a) If there is one at I2C address 0xa0 it may be
+ *       a Hauppauge or an Osprey. Check the EEPROM contents to determine which
+ *       one it is. For Hauppauge, select the tuner type and audio hardware.
+ *   2b) If there is an EEPROM at I2C address 0xa8 it will be an STB card.
+ *       We still have to guess on the tuner type.
+ *              
+ * C) If we do not know the card type from (A) or (B), guess at the tuner
+ *    type based on the I2C address of the tuner.
+ *
+ * D) After determining the Tuner Type, we probe the i2c bus for other
+ *    devices at known locations, eg IR-Remote Control, MSP34xx and TDA
+ *    stereo chips.
+ */
+
+
+/*
+ * These are the sub-system vendor ID codes stored in the
+ * configuration EEPROM used on Bt878/879 cards. They should match the
+ * number assigned to the company by the PCI Special Interest Group
+ */
+#ifndef __NetBSD__
+#define PCI_VENDOR_HAUPPAUGE	0x0070
+#define PCI_VENDOR_AVERMEDIA	0x1461
+#define PCI_VENDOR_STB		0x10B4
+#define PCI_VENDOR_ASKEY	0x144F
+#endif
+/* Following not confirmed with http://members.hyperlink.net.au/~chart,
+   so not added to NetBSD's pcidevs */
+#define PCI_VENDOR_LEADTEK_ALT	0x6606
+#define PCI_VENDOR_FLYVIDEO	0x1851
+#define PCI_VENDOR_FLYVIDEO_2	0x1852
+#define PCI_VENDOR_PINNACLE_ALT	0xBD11
+
+
+void
+probeCard( bktr_ptr_t bktr, int verbose, int unit )
+{
+	int		card, i,j, card_found;
+	int		status;
+	u_char 		probe_signature[128], *probe_temp;
+        int   		any_i2c_devices;
+	u_char 		eeprom[256];
+	int 		tuner_i2c_address = -1;
+	int 		eeprom_i2c_address = -1;
+
+	/* Select all GPIO bits as inputs */
+	OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
+	if (bootverbose)
+	    printf("%s: GPIO is 0x%08x\n", bktr_name(bktr),
+		   INL(bktr, BKTR_GPIO_DATA)); 
+
+#ifdef HAUPPAUGE_MSP_RESET
+	/* Reset the MSP34xx audio chip. This resolves bootup card
+	 * detection problems with old Bt848 based Hauppauge cards with
+	 * MSP34xx stereo audio chips. This must be user enabled because
+	 * at this point the probe function does not know the card type. */
+        OUTL(bktr, BKTR_GPIO_OUT_EN, INL(bktr, BKTR_GPIO_OUT_EN) | (1<<5));
+        OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
+        DELAY(2500); /* wait 2.5ms */
+        OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) & ~(1<<5)); /* write '0' */
+        DELAY(2500); /* wait 2.5ms */
+        OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
+        DELAY(2500); /* wait 2.5ms */
+#endif
+
+	/* Check for the presence of i2c devices */
+        any_i2c_devices = check_for_i2c_devices( bktr );
+
+
+	/* Check for a user specified override on the card selection */
+#if defined( BKTR_OVERRIDE_CARD )
+	bktr->card = cards[ (card = BKTR_OVERRIDE_CARD) ];
+	goto checkEEPROM;
+#endif
+	if (bktr->bt848_card != -1 ) {
+	  bktr->card = cards[ (card = bktr->bt848_card) ];
+	  goto checkEEPROM;
+	}
+
+
+	/* No override, so try and determine the make of the card */
+
+        /* On BT878/879 cards, read the sub-system vendor id */
+	/* This identifies the manufacturer of the card and the model */
+	/* In theory this can be read from PCI registers but this does not */
+	/* appear to work on the FlyVideo 98. Hauppauge also warned that */
+	/* the PCI registers are sometimes not loaded correctly. */
+	/* Therefore, I will read the sub-system vendor ID from the EEPROM */
+	/* (just like the Bt878 does during power up initialisation) */
+
+        if ((bktr->id==BROOKTREE_878) || (bktr->id==BROOKTREE_879)) {
+	    /* Try and locate the EEPROM */
+	    eeprom_i2c_address = locate_eeprom_address( bktr );
+	    if (eeprom_i2c_address != -1) {
+
+                unsigned int subsystem_vendor_id; /* vendors PCI-SIG ID */
+                unsigned int subsystem_id;        /* board model number */
+		unsigned int byte_252, byte_253, byte_254, byte_255;
+
+		bktr->card = cards[ (card = CARD_UNKNOWN) ];
+		bktr->card.eepromAddr = eeprom_i2c_address;
+		bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+
+	        readEEProm(bktr, 0, 256, (u_char *) &eeprom );
+                byte_252 = (unsigned int)eeprom[252];
+                byte_253 = (unsigned int)eeprom[253];
+                byte_254 = (unsigned int)eeprom[254];
+                byte_255 = (unsigned int)eeprom[255];
+                
+                subsystem_id        = (byte_252 << 8) | byte_253;
+                subsystem_vendor_id = (byte_254 << 8) | byte_255;
+
+	        if ( bootverbose ) 
+	            printf("%s: subsystem 0x%04x 0x%04x\n", bktr_name(bktr),
+			   subsystem_vendor_id, subsystem_id);
+
+                if (subsystem_vendor_id == PCI_VENDOR_AVERMEDIA) {
+                    bktr->card = cards[ (card = CARD_AVER_MEDIA) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                if (subsystem_vendor_id == PCI_VENDOR_HAUPPAUGE) {
+                    bktr->card = cards[ (card = CARD_HAUPPAUGE) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                if ((subsystem_vendor_id == PCI_VENDOR_FLYVIDEO)
+                 || (subsystem_vendor_id == PCI_VENDOR_FLYVIDEO_2) ) {
+                    bktr->card = cards[ (card = CARD_FLYVIDEO) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                if (subsystem_vendor_id == PCI_VENDOR_STB) {
+                    bktr->card = cards[ (card = CARD_STB) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                if (subsystem_vendor_id == PCI_VENDOR_ASKEY) {
+                    bktr->card = cards[ (card = CARD_ASKEY_DYNALINK_MAGIC_TVIEW) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                if (subsystem_vendor_id == PCI_VENDOR_LEADTEK_ALT) {
+                    bktr->card = cards[ (card = CARD_LEADTEK) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+		if (subsystem_vendor_id == PCI_VENDOR_PINNACLE_ALT) {
+                    bktr->card = cards[ (card = CARD_MIRO) ];
+		    bktr->card.eepromAddr = eeprom_i2c_address;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+                }
+
+                /* Vendor is unknown. We will use the standard probe code */
+		/* which may not give best results */
+                printf("%s: Warning - card vendor 0x%04x (model 0x%04x) unknown.\n",
+		       bktr_name(bktr), subsystem_vendor_id, subsystem_id);
+            }
+	    else
+	    {
+                printf("%s: Card has no configuration EEPROM. Cannot determine card make.\n",
+		       bktr_name(bktr));
+	    }
+	} /* end of bt878/bt879 card detection code */
+
+	/* If we get to this point, we must have a Bt848/848A/849A card */
+	/* or a Bt878/879 with an unknown subsystem vendor id */
+        /* Try and determine the make of card by clever i2c probing */
+
+   	/* Check for i2c devices. If none, move on */
+	if (!any_i2c_devices) {
+		bktr->card = cards[ (card = CARD_INTEL) ];
+		bktr->card.eepromAddr = 0;
+		bktr->card.eepromSize = 0;
+		goto checkTuner;
+	}
+
+        /* Look for Hauppauge, STB and Osprey cards by the presence */
+	/* of an EEPROM */
+        /* Note: Bt878 based cards also use EEPROMs so we can only do this */
+        /* test on BT848/848A and 849A based cards. */
+	if ((bktr->id==BROOKTREE_848)  ||
+	    (bktr->id==BROOKTREE_848A) ||
+	    (bktr->id==BROOKTREE_849A)) {
+
+            /* At i2c address 0xa0, look for Hauppauge and Osprey cards */
+            if ( (status = i2cRead( bktr, PFC8582_RADDR )) != ABSENT ) {
+
+		    /* Read the eeprom contents */
+		    bktr->card = cards[ (card = CARD_UNKNOWN) ];
+		    bktr->card.eepromAddr = PFC8582_WADDR;
+		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+	            readEEProm(bktr, 0, 128, (u_char *) &eeprom );
+
+		    /* For Hauppauge, check the EEPROM begins with 0x84 */
+		    if (eeprom[0] == 0x84) {
+                            bktr->card = cards[ (card = CARD_HAUPPAUGE) ];
+			    bktr->card.eepromAddr = PFC8582_WADDR;
+			    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                            goto checkTuner;
+		    }
+
+		    /* For Osprey, check the EEPROM begins with "MMAC" */
+		    if (  (eeprom[0] == 'M') &&(eeprom[1] == 'M')
+			&&(eeprom[2] == 'A') &&(eeprom[3] == 'C')) {
+                            bktr->card = cards[ (card = CARD_OSPREY) ];
+			    bktr->card.eepromAddr = PFC8582_WADDR;
+			    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+                            goto checkTuner;
+		    }
+		    printf("%s: Warning: Unknown card type. EEPROM data not recognised\n",
+			   bktr_name(bktr));
+		    printf("%s: %x %x %x %x\n", bktr_name(bktr),
+			   eeprom[0],eeprom[1],eeprom[2],eeprom[3]);
+            }
+
+            /* look for an STB card */
+            if ( (status = i2cRead( bktr, X24C01_RADDR )) != ABSENT ) {
+                    bktr->card = cards[ (card = CARD_STB) ];
+		    bktr->card.eepromAddr = X24C01_WADDR;
+		    bktr->card.eepromSize = (u_char)(128 / EEPROMBLOCKSIZE);
+                    goto checkTuner;
+            }
+
+	}
+
+	signCard( bktr, 1, 128, (u_char *)  &probe_signature );
+
+	if (bootverbose) {
+	  printf("%s: card signature: ", bktr_name(bktr));
+	  for (j = 0; j < Bt848_MAX_SIGN; j++) {
+	    printf(" %02x ", probe_signature[j]);
+	  }
+	  printf("\n\n");
+	}
+	for (i = 0;
+	     i < (sizeof bt848_card_signature)/ sizeof (struct bt848_card_sig);
+	     i++ ) {
+
+	  card_found = 1;
+	  probe_temp = (u_char *) &bt848_card_signature[i].signature;
+
+	  for (j = 0; j < Bt848_MAX_SIGN; j++) {
+	    if ((probe_temp[j] & 0xf) != (probe_signature[j] & 0xf)) {
+	      card_found = 0;
+	      break;
+	    }
+
+	  }
+	  if (card_found) {
+	    bktr->card = cards[ card = bt848_card_signature[i].card];
+	    eeprom_i2c_address = locate_eeprom_address( bktr );
+	    if (eeprom_i2c_address != -1) {
+		bktr->card.eepromAddr = eeprom_i2c_address;
+		bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+	    } else {
+		bktr->card.eepromAddr = 0;
+		bktr->card.eepromSize = 0;
+	    }
+	    tuner_i2c_address = locate_tuner_address( bktr );   
+	    select_tuner( bktr, bt848_card_signature[i].tuner );
+	    goto checkDBX;
+	  }
+	}
+
+	/* We do not know the card type. Default to Miro */
+	bktr->card = cards[ (card = CARD_MIRO) ];
+
+
+checkEEPROM:
+	/* look for a configuration eeprom */
+	eeprom_i2c_address = locate_eeprom_address( bktr );
+	if (eeprom_i2c_address != -1) {
+	    bktr->card.eepromAddr = eeprom_i2c_address;
+	    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
+	} else {
+	    bktr->card.eepromAddr = 0;
+	    bktr->card.eepromSize = 0;
+	}
+
+
+checkTuner:
+
+	/* look for a tuner */
+	tuner_i2c_address = locate_tuner_address( bktr );
+	if ( tuner_i2c_address == -1 ) {
+		select_tuner( bktr, NO_TUNER );
+		goto checkDBX;
+	}
+
+#if defined( BKTR_OVERRIDE_TUNER )
+	select_tuner( bktr, BKTR_OVERRIDE_TUNER );
+	goto checkDBX;
+#endif
+	if (bktr->bt848_tuner != -1 ) {
+	  select_tuner( bktr, bktr->bt848_tuner & 0xff );
+	  goto checkDBX;
+	}
+
+	/* Check for i2c devices */
+	if (!any_i2c_devices) {
+		select_tuner( bktr, NO_TUNER );
+		goto checkDBX;
+	}
+
+	/* differentiate type of tuner */
+
+	switch (card) {
+	case CARD_MIRO:
+	    switch (((INL(bktr, BKTR_GPIO_DATA) >> 10)-1)&7) {
+	    case 0: select_tuner( bktr, TEMIC_PAL ); break;
+	    case 1: select_tuner( bktr, PHILIPS_PAL ); break;
+	    case 2: select_tuner( bktr, PHILIPS_NTSC ); break;
+	    case 3: select_tuner( bktr, PHILIPS_SECAM ); break;
+	    case 4: select_tuner( bktr, NO_TUNER ); break;
+	    case 5: select_tuner( bktr, PHILIPS_PALI ); break;
+	    case 6: select_tuner( bktr, TEMIC_NTSC ); break;
+	    case 7: select_tuner( bktr, TEMIC_PALI ); break;
+	    }
+	    goto checkDBX;
+	    break;
+
+	case CARD_HAUPPAUGE:
+	    /* Hauppauge kindly supplied the following Tuner Table */
+	    /* FIXME: I think the tuners the driver selects for types */
+	    /* 0x08 and 0x15 may be incorrect but no one has complained. */
+	    /* Old Temic tuners had their own API, but newer Temic tuners */
+	    /* have the same API as Philips tuners */
+	    /*
+  ID  Tuner Model           Format			We select Format
+ 0x00 NONE               
+ 0x01 EXTERNAL             
+ 0x02 OTHER                
+ 0x03 Philips FI1216        BG 
+ 0x04 Philips FI1216MF      BGLL'			PHILIPS_SECAM
+ 0x05 Philips FI1236        MN 				PHILIPS_NTSC
+ 0x06 Philips FI1246        I 				PHILIPS_PALI
+ 0x07 Philips FI1256        DK 
+ 0x08 Philips FI1216 MK2    BG 				PHILIPS_PALI
+ 0x09 Philips FI1216MF MK2  BGLL' 			PHILIPS_SECAM
+ 0x0a Philips FI1236 MK2    MN 				PHILIPS_NTSC
+ 0x0b Philips FI1246 MK2    I 				PHILIPS_PALI
+ 0x0c Philips FI1256 MK2    DK 
+ 0x0d Temic 4032FY5         NTSC			TEMIC_NTSC
+ 0x0e Temic 4002FH5         BG				TEMIC_PAL
+ 0x0f Temic 4062FY5         I 				TEMIC_PALI
+ 0x10 Philips FR1216 MK2    BG 
+ 0x11 Philips FR1216MF MK2  BGLL' 			PHILIPS_FR1236_SECAM
+ 0x12 Philips FR1236 MK2    MN 				PHILIPS_FR1236_NTSC
+ 0x13 Philips FR1246 MK2    I 
+ 0x14 Philips FR1256 MK2    DK 
+ 0x15 Philips FM1216        BG 				PHILIPS_FR1216_PAL
+ 0x16 Philips FM1216MF      BGLL' 			PHILIPS_FR1236_SECAM
+ 0x17 Philips FM1236        MN 				PHILIPS_FR1236_NTSC
+ 0x18 Philips FM1246        I 
+ 0x19 Philips FM1256        DK 
+ 0x1a Temic 4036FY5         MN (FI1236 MK2 clone)	PHILIPS_NTSC
+ 0x1b Samsung TCPN9082D     MN 
+ 0x1c Samsung TCPM9092P     Pal BG/I/DK 
+ 0x1d Temic 4006FH5         BG				PHILIPS_PALI
+ 0x1e Samsung TCPN9085D     MN/Radio 
+ 0x1f Samsung TCPB9085P     Pal BG/I/DK / Radio 
+ 0x20 Samsung TCPL9091P     Pal BG & Secam L/L' 
+ 0x21 Temic 4039FY5         NTSC Radio
+ 0x22 Philips FQ1216ME      Pal BGIDK & Secam L/L' 
+ 0x23 Temic 4066FY5         Pal I (FI1246 MK2 clone)	PHILIPS_PALI
+ 0x24 Philips TD1536        MN/ATSCDigital
+ 0x25 Philips TD1536D       MN/ATSCDigital DUAL INPUT
+ 0x26 Philips FMR1236       M/N FM(no demod)
+ 0x27 Philips FI1256MP      B/G, D/K
+ 0x28 Samsung TCPQ9091P     BG/I/DK, L/L'
+ 0x29 Temic 4006FN5         BG/I/DK
+ 0x2a Temic 4009FR5         BG FM			PHILIPS_FR1216_PAL
+ 0x2b Temic 4046FM5         B/G, I, D/K, L/L'
+ 0x2c Temic 4009FN5         B/G, I, D/K, FM (no demod)
+ 0x2d Philips TD1536D_FH_44 MN/ATSCDigital DUAL INPUT
+	    */
+
+
+	    /* Determine the model number from the eeprom */
+	    if (bktr->card.eepromAddr != 0) {
+	        /* eeprom data block structure */
+	        unsigned char *block_1, *block_2, *block_3, *block_4;
+	        int block_1_data_size,  block_2_data_size, block_3_data_size;
+	        int block_1_total_size, block_2_total_size, block_3_total_size;
+		int block_4_header_size;
+
+		unsigned int model,revision;
+		unsigned char tuner_code;
+		unsigned char no_audio_mux;
+
+		readEEProm(bktr, 0, 128, (u_char *) &eeprom );
+
+	        /* LOCATE THE EEPROM DATA BLOCKS */
+	        block_1 = &eeprom[0];
+	        block_1_data_size = (block_1[2] << 8 | block_1[1]);
+	        block_1_total_size = block_1_data_size + 3; /* Header bytes */   
+    
+	        block_2 = &eeprom[block_1_total_size];
+	        block_2_data_size = (block_2[2] << 8 | block_2[1]);
+	        block_2_total_size = block_2_data_size + 3; /* Header bytes */
+    
+	        block_3 = &eeprom[block_1_total_size + block_2_total_size];
+	        block_3_data_size = (block_3[0] &0x07);
+	        block_3_total_size = block_3_data_size + 1; /* Header size */
+
+	        block_4 = &eeprom[block_1_total_size +block_2_total_size +block_3_total_size];
+	        block_4_header_size = 1;
+
+		model    = (block_1[12] << 8  | block_1[11]);
+		revision = (block_1[15] << 16 | block_1[14] << 8 | block_1[13]);
+
+		tuner_code = block_1[9];
+
+		no_audio_mux = ((block_3[3] >> 7) &0x01);
+
+		if (no_audio_mux) bktr->audio_mux_present = 0;
+               
+		if (verbose)
+		    printf("%s: Hauppauge Model %d %c%c%c%c\n",
+			   bktr_name(bktr),
+			   model,
+			   ((revision >> 18) & 0x3f) + 32,
+			   ((revision >> 12) & 0x3f) + 32,
+			   ((revision >>  6) & 0x3f) + 32,
+			   ((revision >>  0) & 0x3f) + 32 );
+
+	        /* Determine the tuner type from the eeprom */
+
+		switch (tuner_code) {
+
+		  case 0x5:
+                  case 0x0a:
+                  case 0x1a:
+		    select_tuner( bktr, PHILIPS_NTSC );
+		    goto checkDBX;
+
+		  case 0x4:
+                  case 0x9:
+		    select_tuner( bktr, PHILIPS_SECAM );
+		    goto checkDBX;
+
+                  case 0x11:
+	          case 0x16:
+		    select_tuner( bktr, PHILIPS_FR1236_SECAM );
+		    goto checkDBX;
+
+                  case 0x12:
+	          case 0x17:
+		    select_tuner( bktr, PHILIPS_FR1236_NTSC );
+		    goto checkDBX;
+
+		  case 0x6:
+	          case 0x8:
+	          case 0xb:
+	          case 0x1d:
+	          case 0x23:
+		    select_tuner( bktr, PHILIPS_PALI );
+		    goto checkDBX;
+
+	          case 0xd:
+		    select_tuner( bktr, TEMIC_NTSC );
+		    goto checkDBX;
+
+                  case 0xe:
+		    select_tuner( bktr, TEMIC_PAL );
+		    goto checkDBX;
+
+	          case 0xf:
+		    select_tuner( bktr, TEMIC_PALI );
+		    goto checkDBX;
+
+                  case 0x15:
+		    select_tuner( bktr, PHILIPS_FR1216_PAL );
+		    goto checkDBX;
+
+                  case 0x2a:
+		    bktr->msp_use_mono_source = 1;
+		    select_tuner( bktr, PHILIPS_FR1216_PAL );
+		    goto checkDBX;
+
+	          default :
+		    printf("%s: Warning - Unknown Hauppauge Tuner 0x%x\n",
+			   bktr_name(bktr), tuner_code);
+		}
+	    }
+	    break;
+
+
+	case CARD_AVER_MEDIA:
+	    /* AVerMedia kindly supplied some details of their EEPROM contents
+	     * which allow us to auto select the Tuner Type.
+	     * Only the newer AVerMedia cards actually have an EEPROM.
+	     */
+	    if (bktr->card.eepromAddr != 0) {
+
+		u_char tuner_make;   /* Eg Philips, Temic */
+		u_char tuner_tv_fm;  /* TV or TV with FM Radio */
+		u_char tuner_format; /* Eg NTSC, PAL, SECAM */
+		int    tuner;
+
+		int tuner_0_table[] = {
+			PHILIPS_NTSC,  PHILIPS_PAL,
+			PHILIPS_PAL,   PHILIPS_PAL,
+			PHILIPS_PAL,   PHILIPS_PAL,
+			PHILIPS_SECAM, PHILIPS_SECAM,
+			PHILIPS_SECAM, PHILIPS_PAL};
+
+		int tuner_0_fm_table[] = {
+			PHILIPS_FR1236_NTSC,  PHILIPS_FR1216_PAL,
+			PHILIPS_FR1216_PAL,   PHILIPS_FR1216_PAL,
+			PHILIPS_FR1216_PAL,   PHILIPS_FR1216_PAL,
+			PHILIPS_FR1236_SECAM, PHILIPS_FR1236_SECAM,
+			PHILIPS_FR1236_SECAM, PHILIPS_FR1216_PAL};
+
+		int tuner_1_table[] = {
+			TEMIC_NTSC,  TEMIC_PAL,   TEMIC_PAL,
+			TEMIC_PAL,   TEMIC_PAL,   TEMIC_PAL,
+			TEMIC_SECAM, TEMIC_SECAM, TEMIC_SECAM,
+			TEMIC_PAL};
+
+
+		/* Extract information from the EEPROM data */
+	    	readEEProm(bktr, 0, 128, (u_char *) &eeprom );
+
+		tuner_make   = (eeprom[0x41] & 0x7);
+		tuner_tv_fm  = (eeprom[0x41] & 0x18) >> 3;
+		tuner_format = (eeprom[0x42] & 0xf0) >> 4;
+
+		/* Treat tuner make 0 (Philips) and make 2 (LG) the same */
+		if ( ((tuner_make == 0) || (tuner_make == 2))
+		    && (tuner_format <= 9) && (tuner_tv_fm == 0) ) {
+			tuner = tuner_0_table[tuner_format];
+			select_tuner( bktr, tuner );
+			goto checkDBX;
+		}
+
+		if ( ((tuner_make == 0) || (tuner_make == 2))
+		    && (tuner_format <= 9) && (tuner_tv_fm == 1) ) {
+			tuner = tuner_0_fm_table[tuner_format];
+			select_tuner( bktr, tuner );
+			goto checkDBX;
+		}
+
+		if ( (tuner_make == 1) && (tuner_format <= 9) ) {
+			tuner = tuner_1_table[tuner_format];
+			select_tuner( bktr, tuner );
+			goto checkDBX;
+		}
+
+	    	printf("%s: Warning - Unknown AVerMedia Tuner Make %d Format %d\n",
+			bktr_name(bktr), tuner_make, tuner_format);
+	    }
+	    break;
+
+	case CARD_LEADTEK:
+#if BKTR_SYSTEM_DEFAULT == BROOKTREE_PAL
+	    select_tuner( bktr, PHILIPS_FR1216_PAL );
+#else
+	    select_tuner( bktr, PHILIPS_FR1236_NTSC );
+#endif
+            goto checkDBX;
+	    break;
+
+	} /* end switch(card) */
+
+
+        /* At this point, a goto checkDBX has not occured */
+        /* We have not been able to select a Tuner */
+        /* Some cards make use of the tuner address to */
+        /* identify the make/model of tuner */
+
+        /* At address 0xc0/0xc1 we often find a TEMIC NTSC */
+        if ( i2cRead( bktr, 0xc1 ) != ABSENT ) {
+	    select_tuner( bktr, TEMIC_NTSC );
+            goto checkDBX;
+        }
+  
+        /* At address 0xc6/0xc7 we often find a PHILIPS NTSC Tuner */
+        if ( i2cRead( bktr, 0xc7 ) != ABSENT ) {
+	    select_tuner( bktr, PHILIPS_NTSC );
+            goto checkDBX;
+        }
+
+        /* Address 0xc2/0xc3 is default (or common address) for several */
+	/* tuners and we cannot tell which is which. */
+	/* And for all other tuner i2c addresses, select the default */
+	select_tuner( bktr, DEFAULT_TUNER );
+
+
+checkDBX:
+#if defined( BKTR_OVERRIDE_DBX )
+	bktr->card.dbx = BKTR_OVERRIDE_DBX;
+	goto checkMSP;
+#endif
+   /* Check for i2c devices */
+	if (!any_i2c_devices) {
+		goto checkMSP;
+	}
+
+	/* probe for BTSC (dbx) chip */
+	if ( i2cRead( bktr, TDA9850_RADDR ) != ABSENT )
+		bktr->card.dbx = 1;
+
+checkMSP:
+	/* If this is a Hauppauge Bt878 card, we need to enable the
+	 * MSP 34xx audio chip. 
+	 * If this is a Hauppauge Bt848 card, reset the MSP device.
+	 * The MSP reset line is wired to GPIO pin 5. On Bt878 cards a pulldown
+	 * resistor holds the device in reset until we set GPIO pin 5.
+         */
+
+	/* Optionally skip the MSP reset. This is handy if you initialise the
+	 * MSP audio in another operating system (eg Windows) first and then
+	 * do a soft reboot.
+	 */
+
+#ifndef BKTR_NO_MSP_RESET
+	if (card == CARD_HAUPPAUGE) {
+            OUTL(bktr, BKTR_GPIO_OUT_EN, INL(bktr, BKTR_GPIO_OUT_EN) | (1<<5));
+            OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
+            DELAY(2500); /* wait 2.5ms */
+            OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) & ~(1<<5)); /* write '0' */
+            DELAY(2500); /* wait 2.5ms */
+            OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
+            DELAY(2500); /* wait 2.5ms */
+        }
+#endif
+
+#if defined( BKTR_OVERRIDE_MSP )
+	bktr->card.msp3400c = BKTR_OVERRIDE_MSP;
+	goto checkMSPEnd;
+#endif
+
+	/* Check for i2c devices */
+	if (!any_i2c_devices) {
+		goto checkMSPEnd;
+	}
+
+	if ( i2cRead( bktr, MSP3400C_RADDR ) != ABSENT ) {
+		bktr->card.msp3400c = 1;
+	}
+
+checkMSPEnd:
+
+	if (bktr->card.msp3400c) {
+		bktr->msp_addr = MSP3400C_WADDR;
+		msp_read_id( bktr );
+		printf("%s: Detected a MSP%s at 0x%x\n", bktr_name(bktr),
+		       bktr->msp_version_string,
+		       bktr->msp_addr);
+
+	}
+
+/* Check for Dolby Surround Sound DPL3518A sound chip */
+	if ( i2cRead( bktr, DPL3518A_RADDR ) != ABSENT ) {
+		bktr->card.dpl3518a = 1;
+	}
+
+	if (bktr->card.dpl3518a) {
+		bktr->dpl_addr = DPL3518A_WADDR;
+		dpl_read_id( bktr );
+		printf("%s: Detected a DPL%s at 0x%x\n", bktr_name(bktr),
+		       bktr->dpl_version_string,
+		       bktr->dpl_addr);
+	}
+
+/* Start of Check Remote */
+        /* Check for the Hauppauge IR Remote Control */
+        /* If there is an external unit, the internal will be ignored */
+
+        bktr->remote_control = 0; /* initial value */
+
+        if (any_i2c_devices) {
+            if (i2cRead( bktr, HAUP_REMOTE_EXT_RADDR ) != ABSENT )
+                {
+                bktr->remote_control      = 1;
+                bktr->remote_control_addr = HAUP_REMOTE_EXT_RADDR;
+                }
+            else if (i2cRead( bktr, HAUP_REMOTE_INT_RADDR ) != ABSENT )
+                {
+                bktr->remote_control      = 1;
+                bktr->remote_control_addr = HAUP_REMOTE_INT_RADDR;
+                }
+
+        }
+        /* If a remote control is found, poll it 5 times to turn off the LED */
+        if (bktr->remote_control) {
+                int i;
+                for (i=0; i<5; i++)
+                        i2cRead( bktr, bktr->remote_control_addr );
+        }
+/* End of Check Remote */
+
+#if defined( BKTR_USE_PLL )
+	bktr->xtal_pll_mode = BT848_USE_PLL;
+	goto checkPLLEnd;
+#endif
+	/* Default is to use XTALS and not PLL mode */
+	bktr->xtal_pll_mode = BT848_USE_XTALS;
+
+	/* Enable PLL mode for OSPREY users */
+	if (card == CARD_OSPREY)
+		bktr->xtal_pll_mode = BT848_USE_PLL;
+
+	/* Enable PLL mode for Video Highway Xtreme users */
+	if (card == CARD_VIDEO_HIGHWAY_XTREME)
+		bktr->xtal_pll_mode = BT848_USE_PLL;
+
+
+	/* Most (perhaps all) Bt878 cards need to be switched to PLL mode */
+	/* as they only fit the NTSC crystal to their cards */
+	/* Default to enabling PLL mode for all Bt878/879 cards */
+
+	if ((bktr->id==BROOKTREE_878 || bktr->id==BROOKTREE_879) )
+		bktr->xtal_pll_mode = BT848_USE_PLL;
+
+
+#if defined( BKTR_USE_PLL )
+checkPLLEnd:
+#endif
+
+
+	bktr->card.tuner_pllAddr = tuner_i2c_address;
+
+	if ( verbose ) {
+		printf( "%s: %s", bktr_name(bktr), bktr->card.name );
+		if ( bktr->card.tuner )
+			printf( ", %s tuner", bktr->card.tuner->name );
+		if ( bktr->card.dbx )
+			printf( ", dbx stereo" );
+		if ( bktr->card.msp3400c )
+			printf( ", msp3400c stereo" );
+		if ( bktr->card.dpl3518a )
+			printf( ", dpl3518a dolby" );
+                if ( bktr->remote_control )
+                        printf( ", remote control" );
+		printf( ".\n" );
+	}
+}
+
+#undef ABSENT