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bktr_card.c revision 1.7
      1 /*	$NetBSD: bktr_card.c,v 1.7 2000/09/03 02:01:32 wiz Exp $	*/
      2 
      3 /* FreeBSD: src/sys/dev/bktr/bktr_card.c,v 1.12 2000/06/28 15:09:12 roger Exp */
      4 
      5 /*
      6  * This is part of the Driver for Video Capture Cards (Frame grabbers)
      7  * and TV Tuner cards using the Brooktree Bt848, Bt848A, Bt849A, Bt878, Bt879
      8  * chipset.
      9  * Copyright Roger Hardiman and Amancio Hasty.
     10  *
     11  * bktr_card : This deals with identifying TV cards.
     12  *               trying to find the card make and model of card.
     13  *               trying to find the type of tuner fitted.
     14  *               reading the configuration EEPROM.
     15  *               locating i2c devices.
     16  *
     17  */
     18 
     19 /*
     20  * 1. Redistributions of source code must retain the
     21  * Copyright (c) 1997 Amancio Hasty, 1999 Roger Hardiman
     22  * All rights reserved.
     23  *
     24  * Redistribution and use in source and binary forms, with or without
     25  * modification, are permitted provided that the following conditions
     26  * are met:
     27  * 1. Redistributions of source code must retain the above copyright
     28  *    notice, this list of conditions and the following disclaimer.
     29  * 2. Redistributions in binary form must reproduce the above copyright
     30  *    notice, this list of conditions and the following disclaimer in the
     31  *    documentation and/or other materials provided with the distribution.
     32  * 3. All advertising materials mentioning features or use of this software
     33  *    must display the following acknowledgement:
     34  *      This product includes software developed by Amancio Hasty and
     35  *      Roger Hardiman
     36  * 4. The name of the author may not be used to endorse or promote products
     37  *    derived from this software without specific prior written permission.
     38  *
     39  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     40  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     41  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     42  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     43  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     44  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     45  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     48  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     49  * POSSIBILITY OF SUCH DAMAGE.
     50  */
     51 
     52 #include "opt_bktr.h"		/* Include any kernel config options */
     53 
     54 #include <sys/param.h>
     55 #include <sys/systm.h>
     56 #include <sys/vnode.h>
     57 
     58 #ifdef __FreeBSD__
     59 #include <machine/clock.h>      /* for DELAY */
     60 #include <pci/pcivar.h>
     61 
     62 #if (__FreeBSD_version >=300000)
     63 #include <machine/bus_memio.h>	/* for bus space */
     64 #include <machine/bus.h>
     65 #include <sys/bus.h>
     66 #endif
     67 #endif
     68 
     69 #ifdef __NetBSD__
     70 #include <dev/ic/bt8xx.h>	/* NetBSD location for .h files */
     71 #include <dev/pci/bktr/bktr_reg.h>
     72 #include <dev/pci/bktr/bktr_core.h>
     73 #include <dev/pci/bktr/bktr_tuner.h>
     74 #include <dev/pci/bktr/bktr_card.h>
     75 #include <dev/pci/bktr/bktr_audio.h>
     76 #else
     77 #include <machine/ioctl_meteor.h>	/* Traditional location for .h files */
     78 #include <machine/ioctl_bt848.h>        /* extensions to ioctl_meteor.h */
     79 #include <dev/bktr/bktr_reg.h>
     80 #include <dev/bktr/bktr_core.h>
     81 #include <dev/bktr/bktr_tuner.h>
     82 #include <dev/bktr/bktr_card.h>
     83 #include <dev/bktr/bktr_audio.h>
     84 #endif
     85 
     86 /* Various defines */
     87 #define HAUP_REMOTE_INT_WADDR   0x30
     88 #define HAUP_REMOTE_INT_RADDR   0x31
     89 
     90 #define HAUP_REMOTE_EXT_WADDR   0x34
     91 #define HAUP_REMOTE_EXT_RADDR   0x35
     92 
     93 /* address of BTSC/SAP decoder chip */
     94 #define TDA9850_WADDR           0xb6
     95 #define TDA9850_RADDR           0xb7
     96 
     97 /* address of MSP3400C chip */
     98 #define MSP3400C_WADDR          0x80
     99 #define MSP3400C_RADDR          0x81
    100 
    101 /* address of DPL3518A chip */
    102 #define DPL3518A_WADDR          0x84
    103 #define DPL3518A_RADDR          0x85
    104 
    105 /* EEProm (128 * 8) on an STB card */
    106 #define X24C01_WADDR            0xae
    107 #define X24C01_RADDR            0xaf
    108 
    109 
    110 /* EEProm (256 * 8) on a Hauppauge card */
    111 /* and on most BT878s cards to store the sub-system vendor id */
    112 #define PFC8582_WADDR           0xa0
    113 #define PFC8582_RADDR		0xa1
    114 
    115 #if BKTR_SYSTEM_DEFAULT == BROOKTREE_PAL
    116 #define DEFAULT_TUNER   PHILIPS_PALI
    117 #else
    118 #define DEFAULT_TUNER   PHILIPS_NTSC
    119 #endif
    120 
    121 
    122 
    123 
    124 /*
    125  * the data for each type of card
    126  *
    127  * Note:
    128  *   these entried MUST be kept in the order defined by the CARD_XXX defines!
    129  */
    130 static const struct CARDTYPE cards[] = {
    131 
    132 	{  CARD_UNKNOWN,			/* the card id */
    133 	  "Unknown",				/* the 'name' */
    134 	   NULL,				/* the tuner */
    135 	   0,					/* the tuner i2c address */
    136 	   0,					/* dbx unknown */
    137 	   0,
    138 	   0,
    139 	   0,					/* EEProm unknown */
    140 	   0,					/* EEProm unknown */
    141 	   { 0, 0, 0, 0, 0 },
    142 	   0 },					/* GPIO mask */
    143 
    144 	{  CARD_MIRO,				/* the card id */
    145 	  "Pinnacle/Miro TV",			/* the 'name' */
    146 	   NULL,				/* the tuner */
    147 	   0,					/* the tuner i2c address */
    148 	   0,					/* dbx unknown */
    149 	   0,
    150 	   0,
    151 	   0,					/* EEProm unknown */
    152 	   0,					/* size unknown */
    153 	   { 0x02, 0x01, 0x00, 0x0a, 1 },	/* audio MUX values */
    154 	   0x0f },				/* GPIO mask */
    155 
    156 	{  CARD_HAUPPAUGE,			/* the card id */
    157 	  "Hauppauge WinCast/TV",		/* the 'name' */
    158 	   NULL,				/* the tuner */
    159 	   0,					/* the tuner i2c address */
    160 	   0,					/* dbx is optional */
    161 	   0,
    162 	   0,
    163 	   PFC8582_WADDR,			/* EEProm type */
    164 	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
    165 	   { 0x00, 0x02, 0x01, 0x04, 1 },	/* audio MUX values */
    166 	   0x0f },				/* GPIO mask */
    167 
    168 	{  CARD_STB,				/* the card id */
    169 	  "STB TV/PCI",				/* the 'name' */
    170 	   NULL,				/* the tuner */
    171 	   0,					/* the tuner i2c address */
    172 	   0,					/* dbx is optional */
    173 	   0,
    174 	   0,
    175 	   X24C01_WADDR,			/* EEProm type */
    176 	   (u_char)(128 / EEPROMBLOCKSIZE),	/* 128 bytes */
    177 	   { 0x00, 0x01, 0x02, 0x02, 1 }, 	/* audio MUX values */
    178 	   0x0f },				/* GPIO mask */
    179 
    180 	{  CARD_INTEL,				/* the card id */
    181 	  "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
    182 	   NULL,				/* the tuner */
    183 	   0,					/* the tuner i2c address */
    184 	   0,
    185 	   0,
    186 	   0,
    187 	   0,
    188 	   0,
    189 	   { 0, 0, 0, 0, 0 }, 			/* audio MUX values */
    190 	   0x00 },				/* GPIO mask */
    191 
    192 	{  CARD_IMS_TURBO,			/* the card id */
    193 	  "IMS TV Turbo",			/* the 'name' */
    194 	   NULL,				/* the tuner */
    195 	   0,					/* the tuner i2c address */
    196 	   0,					/* dbx is optional */
    197 	   0,
    198 	   0,
    199 	   PFC8582_WADDR,			/* EEProm type */
    200 	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
    201 	   { 0x01, 0x02, 0x01, 0x00, 1 },	/* audio MUX values */
    202 	   0x0f },				/* GPIO mask */
    203 
    204         {  CARD_AVER_MEDIA,			/* the card id */
    205           "AVer Media TV/FM",                   /* the 'name' */
    206            NULL,                                /* the tuner */
    207 	   0,					/* the tuner i2c address */
    208            0,                                   /* dbx is optional */
    209            0,
    210 	   0,
    211            0,                                   /* EEProm type */
    212            0,                                   /* EEProm size */
    213            { 0x0c, 0x08, 0x04, 0x00, 1 },	/* audio MUX values */
    214 	   0x1f },				/* GPIO mask */
    215 
    216         {  CARD_OSPREY,				/* the card id */
    217           "MMAC Osprey",                   	/* the 'name' */
    218            NULL,                                /* the tuner */
    219 	   0,					/* the tuner i2c address */
    220            0,                                   /* dbx is optional */
    221 	   0,
    222            0,
    223 	   PFC8582_WADDR,			/* EEProm type */
    224 	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
    225            { 0x00, 0x00, 0x00, 0x00, 0 },	/* audio MUX values */
    226 	   0 },					/* GPIO mask */
    227 
    228         {  CARD_NEC_PK,                         /* the card id */
    229           "NEC PK-UG-X017",                     /* the 'name' */
    230            NULL,                                /* the tuner */
    231            0,                                   /* the tuner i2c address */
    232            0,                                   /* dbx is optional */
    233 	   0,
    234            0,
    235            0,                                   /* EEProm type */
    236            0,                                   /* EEProm size */
    237            { 0x01, 0x02, 0x01, 0x00, 1 },	/* audio MUX values */
    238 	   0x0f },				/* GPIO mask */
    239 
    240         {  CARD_IO_GV,                          /* the card id */
    241           "I/O DATA GV-BCTV2/PCI",              /* the 'name' */
    242            NULL,                                /* the tuner */
    243            0,                                   /* the tuner i2c address */
    244            0,                                   /* dbx is optional */
    245            0,
    246 	   0,
    247            0,                                   /* EEProm type */
    248            0,                                   /* EEProm size */
    249            { 0x00, 0x00, 0x00, 0x00, 1 },	/* Has special MUX handler */
    250 	   0x0f },				/* GPIO mask */
    251 
    252         {  CARD_FLYVIDEO,			/* the card id */
    253           "FlyVideo",				/* the 'name' */
    254            NULL,				/* the tuner */
    255            0,					/* the tuner i2c address */
    256            0,					/* dbx is optional */
    257            0,					/* msp34xx is optional */
    258            0,					/* dpl3518a is optional */
    259 	   0xac,				/* EEProm type */
    260 	   (u_char)(256 / EEPROMBLOCKSIZE),	/* 256 bytes */
    261            { 0x000, 0x800, 0x400, 0x8dff00, 1 },/* audio MUX values */
    262 	   0x8dff00 },				/* GPIO mask */
    263 
    264 	{  CARD_ZOLTRIX,			/* the card id */
    265 	  "Zoltrix",				/* the 'name' */
    266            NULL,				/* the tuner */
    267            0,					/* the tuner i2c address */
    268            0,					/* dbx is optional */
    269            0,					/* msp34xx is optional */
    270            0,					/* dpl3518a is optional */
    271 	   0,					/* EEProm type */
    272 	   0,					/* EEProm size */
    273 	   { 0x04, 0x01, 0x00, 0x0a, 1 },	/* audio MUX values */
    274 	   0x0f },				/* GPIO mask */
    275 
    276 	{  CARD_KISS,				/* the card id */
    277 	  "KISS TV/FM PCI",			/* the 'name' */
    278            NULL,				/* the tuner */
    279            0,					/* the tuner i2c address */
    280            0,					/* dbx is optional */
    281            0,					/* msp34xx is optional */
    282            0,					/* dpl3518a is optional */
    283 	   0,					/* EEProm type */
    284 	   0,					/* EEProm size */
    285 	   { 0x0c, 0x00, 0x0b, 0x0b, 1 },	/* audio MUX values */
    286 	   0x0f },				/* GPIO mask */
    287 
    288 	{  CARD_VIDEO_HIGHWAY_XTREME,		/* the card id */
    289 	  "Video Highway Xtreme",		/* the 'name' */
    290            NULL,				/* the tuner */
    291 	   0,
    292 	   0,
    293 	   0,
    294 	   0,
    295 	   0,					/* EEProm type */
    296 	   0,					/* EEProm size */
    297 	   { 0x00, 0x02, 0x01, 0x04, 1 },	/* audio MUX values */
    298 	   0x0f },				/* GPIO mask */
    299 
    300 	{  CARD_ASKEY_DYNALINK_MAGIC_TVIEW,	/* the card id */
    301 	  "Askey/Dynalink Magic TView",		/* the 'name' */
    302 	   NULL,				/* the tuner */
    303 	   0,
    304 	   0,
    305 	   0,
    306 	   0,
    307 	   0,					/* EEProm type */
    308 	   0,					/* EEProm size */
    309 	   { 0x400, 0xE00, 0x400, 0xC00, 1 },	/* audio MUX values */
    310 	   0xE00 },				/* GPIO mask */
    311 
    312 	{  CARD_LEADTEK,			/* the card id */
    313 	  "Leadtek Winfast TV 2000",		/* the 'name' */
    314 	   NULL,				/* the tuner */
    315 	   0,
    316 	   0,
    317 	   0,
    318 	   0,
    319 	   0,					/* EEProm type */
    320 	   0,					/* EEProm size */
    321 	   /* Tuner, Extern, Intern, Mute, Enabled */
    322 	   { 0x621000, 0x621000, 0x621000, 0xE21000, 1 }, /* audio MUX values */
    323 	   0xfff000 },				/* GPIO mask */
    324 
    325         {  CARD_TERRATVPLUS,                    /* the card id */
    326           "TerraTVplus",                        /* the 'name' */
    327            NULL,                                /* the tuner */
    328 	   0,
    329 	   0,
    330 	   0,
    331 	   0,
    332 	   0,					/* EEProm type */
    333 	   0,					/* EEProm size */
    334            { 0x20000, 0x00000, 0x30000, 0x40000, 1 }, /* audio MUX values*/
    335            0x70000 },                           /* GPIO mask */
    336 
    337 };
    338 
    339 struct bt848_card_sig bt848_card_signature[1]= {
    340   /* IMS TURBO TV : card 5 */
    341     {  5,9, {00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 02, 00, 00, 00}}
    342 
    343 
    344 };
    345 
    346 
    347 /*
    348  * Write to the configuration EEPROM on the card.
    349  * This is dangerous and will mess up your card. Therefore it is not
    350  * implemented.
    351  */
    352 int
    353 writeEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
    354 {
    355         return( -1 );
    356 }
    357 
    358 /*
    359  * Read the contents of the configuration EEPROM on the card.
    360  * (This is not fitted to all makes of card. All Hauppauge cards have them
    361  * and so do newer Bt878 based cards.
    362  */
    363 int
    364 readEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
    365 {
    366 	int	x;
    367 	int	addr;
    368 	int	max;
    369 	int	byte;
    370 
    371 	/* get the address of the EEProm */
    372 	addr = (int)(bktr->card.eepromAddr & 0xff);
    373 	if ( addr == 0 )
    374 		return( -1 );
    375 
    376 	max = (int)(bktr->card.eepromSize * EEPROMBLOCKSIZE);
    377 	if ( (offset + count) > max )
    378 		return( -1 );
    379 
    380 	/* set the start address */
    381 	if ( i2cWrite( bktr, addr, offset, -1 ) == -1 )
    382 		return( -1 );
    383 
    384 	/* the read cycle */
    385 	for ( x = 0; x < count; ++x ) {
    386 		if ( (byte = i2cRead( bktr, (addr | 1) )) == -1 )
    387 			return( -1 );
    388 		data[ x ] = byte;
    389 	}
    390 
    391 	return( 0 );
    392 }
    393 
    394 
    395 #define ABSENT		(-1)
    396 
    397 /*
    398  * get a signature of the card
    399  * read all 128 possible i2c read addresses from 0x01 thru 0xff
    400  * build a bit array with a 1 bit for each i2c device that responds
    401  *
    402  * XXX FIXME: use offset & count args
    403  */
    404 int
    405 signCard( bktr_ptr_t bktr, int offset, int count, u_char* sig )
    406 {
    407 	int	x;
    408 
    409 	for ( x = 0; x < 16; ++x )
    410 		sig[ x ] = 0;
    411 
    412 	for ( x = 0; x < count; ++x ) {
    413 		if ( i2cRead( bktr, (2 * x) + 1 ) != ABSENT ) {
    414 			sig[ x / 8 ] |= (1 << (x % 8) );
    415 		}
    416 	}
    417 
    418 	return( 0 );
    419 }
    420 
    421 
    422 /*
    423  * check_for_i2c_devices.
    424  * Some BT848 cards have no tuner and no additional i2c devices
    425  * eg stereo decoder. These are used for video conferencing or capture from
    426  * a video camera. (eg VideoLogic Captivator PCI, Intel SmartCapture card).
    427  *
    428  * Determine if there are any i2c devices present. There are none present if
    429  *  a) reading from all 128 devices returns ABSENT (-1) for each one
    430  *     (eg VideoLogic Captivator PCI with BT848)
    431  *  b) reading from all 128 devices returns 0 for each one
    432  *     (eg VideoLogic Captivator PCI rev. 2F with BT848A)
    433  */
    434 static int check_for_i2c_devices( bktr_ptr_t bktr ){
    435   int x, temp_read;
    436   int i2c_all_0 = 1;
    437   int i2c_all_absent = 1;
    438   for ( x = 0; x < 128; ++x ) {
    439     temp_read = i2cRead( bktr, (2 * x) + 1 );
    440     if (temp_read != 0)      i2c_all_0 = 0;
    441     if (temp_read != ABSENT) i2c_all_absent = 0;
    442   }
    443 
    444   if ((i2c_all_0) || (i2c_all_absent)) return 0;
    445   else return 1;
    446 }
    447 
    448 
    449 /*
    450  * Temic/Philips datasheets say tuners can be at i2c addresses 0xc0, 0xc2,
    451  * 0xc4 or 0xc6, settable by links on the tuner.
    452  * Determine the actual address used on the TV card by probing read addresses.
    453  */
    454 static int locate_tuner_address( bktr_ptr_t bktr) {
    455   if (i2cRead( bktr, 0xc1) != ABSENT) return 0xc0;
    456   if (i2cRead( bktr, 0xc3) != ABSENT) return 0xc2;
    457   if (i2cRead( bktr, 0xc5) != ABSENT) return 0xc4;
    458   if (i2cRead( bktr, 0xc7) != ABSENT) return 0xc6;
    459   return -1; /* no tuner found */
    460 }
    461 
    462 
    463 /*
    464  * Search for a configuration EEPROM on the i2c bus by looking at i2c addresses
    465  * where EEPROMs are usually found.
    466  * On some cards, the EEPROM appears in several locations, but all in the
    467  * range 0xa0 to 0xae.
    468  */
    469 static int locate_eeprom_address( bktr_ptr_t bktr) {
    470   if (i2cRead( bktr, 0xa0) != ABSENT) return 0xa0;
    471   if (i2cRead( bktr, 0xac) != ABSENT) return 0xac;
    472   if (i2cRead( bktr, 0xae) != ABSENT) return 0xae;
    473   return -1; /* no eeprom found */
    474 }
    475 
    476 
    477 /*
    478  * determine the card brand/model
    479  * BKTR_OVERRIDE_CARD, BKTR_OVERRIDE_TUNER, BKTR_OVERRIDE_DBX and
    480  * BKTR_OVERRIDE_MSP can be used to select a specific device,
    481  * regardless of the autodetection and i2c device checks.
    482  *
    483  * The scheme used for probing cards faces these problems:
    484  *  It is impossible to work out which type of tuner is actually fitted,
    485  *  (the driver cannot tell if the Tuner is PAL or NTSC, Temic or Philips)
    486  *  It is impossible to determine what audio-mux hardware is connected.
    487  *  It is impossible to determine if there is extra hardware connected to the
    488  *  GPIO pins  (eg radio chips or MSP34xx reset logic)
    489  *
    490  * However some makes of card (eg Hauppauge) come with a configuration eeprom
    491  * which tells us the make of the card. Most eeproms also tell us the
    492  * tuner type and other features of the the cards.
    493  *
    494  * The current probe code works as follows
    495  * A) If the card uses a Bt878/879:
    496  *   1) Read the sub-system vendor id from the configuration EEPROM.
    497  *      Select the required tuner, audio mux arrangement and any other
    498  *      onboard features. If this fails, move to step B.
    499  * B) If it card uses a Bt848, 848A, 849A or an unknown Bt878/879:
    500  *   1) Look for I2C devices. If there are none fitted, it is an Intel or
    501  *      VideoLogic cards.
    502  *   2) Look for a configuration EEPROM.
    503  *   2a) If there is one at I2C address 0xa0 it may be
    504  *       a Hauppauge or an Osprey. Check the EEPROM contents to determine which
    505  *       one it is. For Hauppauge, select the tuner type and audio hardware.
    506  *   2b) If there is an EEPROM at I2C address 0xa8 it will be an STB card.
    507  *       We still have to guess on the tuner type.
    508  *
    509  * C) If we do not know the card type from (A) or (B), guess at the tuner
    510  *    type based on the I2C address of the tuner.
    511  *
    512  * D) After determining the Tuner Type, we probe the i2c bus for other
    513  *    devices at known locations, eg IR-Remote Control, MSP34xx and TDA
    514  *    stereo chips.
    515  */
    516 
    517 
    518 /*
    519  * These are the sub-system vendor ID codes stored in the
    520  * configuration EEPROM used on Bt878/879 cards. They should match the
    521  * number assigned to the company by the PCI Special Interest Group
    522  */
    523 #ifndef __NetBSD__
    524 #define PCI_VENDOR_HAUPPAUGE	0x0070
    525 #define PCI_VENDOR_AVERMEDIA	0x1461
    526 #define PCI_VENDOR_STB		0x10B4
    527 #define PCI_VENDOR_ASKEY	0x144F
    528 #endif
    529 /* Following not confirmed with http://members.hyperlink.net.au/~chart,
    530    so not added to NetBSD's pcidevs */
    531 #define PCI_VENDOR_LEADTEK_ALT	0x6606
    532 #define PCI_VENDOR_FLYVIDEO	0x1851
    533 #define PCI_VENDOR_PINNACLE_ALT	0xBD11
    534 
    535 void
    536 probeCard( bktr_ptr_t bktr, int verbose, int unit )
    537 {
    538 	int		card, i,j, card_found;
    539 	int		status;
    540 	u_char 		probe_signature[128], *probe_temp;
    541         int   		any_i2c_devices;
    542 	u_char 		eeprom[256];
    543 	u_char 		tuner_code = 0;
    544 	int 		tuner_i2c_address = -1;
    545 	int 		eeprom_i2c_address = -1;
    546 
    547 	/* Select all GPIO bits as inputs */
    548 	OUTL(bktr, BKTR_GPIO_OUT_EN, 0);
    549 	if (bootverbose)
    550 	    printf("%s: GPIO is 0x%08x\n", bktr_name(bktr),
    551 		   INL(bktr, BKTR_GPIO_DATA));
    552 
    553 #ifdef HAUPPAUGE_MSP_RESET
    554 	/* Reset the MSP34xx audio chip. This resolves bootup card
    555 	 * detection problems with old Bt848 based Hauppauge cards with
    556 	 * MSP34xx stereo audio chips. This must be user enabled because
    557 	 * at this point the probe function does not know the card type. */
    558         OUTL(bktr, BKTR_GPIO_OUT_EN, INL(bktr, BKTR_GPIO_OUT_EN) | (1<<5));
    559         OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
    560         DELAY(2500); /* wait 2.5ms */
    561         OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) & ~(1<<5)); /* write '0' */
    562         DELAY(2500); /* wait 2.5ms */
    563         OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
    564         DELAY(2500); /* wait 2.5ms */
    565 #endif
    566 
    567 	/* Check for the presence of i2c devices */
    568         any_i2c_devices = check_for_i2c_devices( bktr );
    569 
    570 
    571 	/* Check for a user specified override on the card selection */
    572 #if defined( BKTR_OVERRIDE_CARD )
    573 	bktr->card = cards[ (card = BKTR_OVERRIDE_CARD) ];
    574 	goto checkEEPROM;
    575 #endif
    576 	if (bktr->bt848_card != -1 ) {
    577 	  bktr->card = cards[ (card = bktr->bt848_card) ];
    578 	  goto checkEEPROM;
    579 	}
    580 
    581 
    582 	/* No override, so try and determine the make of the card */
    583 
    584         /* On BT878/879 cards, read the sub-system vendor id */
    585 	/* This identifies the manufacturer of the card and the model */
    586 	/* In theory this can be read from PCI registers but this does not */
    587 	/* appear to work on the FlyVideo 98. Hauppauge also warned that */
    588 	/* the PCI registers are sometimes not loaded correctly. */
    589 	/* Therefore, I will read the sub-system vendor ID from the EEPROM */
    590 	/* (just like the Bt878 does during power up initialisation) */
    591 
    592         if ((bktr->id==BROOKTREE_878) || (bktr->id==BROOKTREE_879)) {
    593 	    /* Try and locate the EEPROM */
    594 	    eeprom_i2c_address = locate_eeprom_address( bktr );
    595 	    if (eeprom_i2c_address != -1) {
    596 
    597                 unsigned int subsystem_vendor_id; /* vendors PCI-SIG ID */
    598                 unsigned int subsystem_id;        /* board model number */
    599 		unsigned int byte_252, byte_253, byte_254, byte_255;
    600 
    601 		bktr->card = cards[ (card = CARD_UNKNOWN) ];
    602 		bktr->card.eepromAddr = eeprom_i2c_address;
    603 		bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    604 
    605 	        readEEProm(bktr, 0, 256, (u_char *) &eeprom );
    606                 byte_252 = (unsigned int)eeprom[252];
    607                 byte_253 = (unsigned int)eeprom[253];
    608                 byte_254 = (unsigned int)eeprom[254];
    609                 byte_255 = (unsigned int)eeprom[255];
    610 
    611                 subsystem_id        = (byte_252 << 8) | byte_253;
    612                 subsystem_vendor_id = (byte_254 << 8) | byte_255;
    613 
    614 	        if ( bootverbose )
    615 	            printf("%s: subsystem 0x%04x 0x%04x\n", bktr_name(bktr),
    616 			   subsystem_vendor_id, subsystem_id);
    617 
    618                 if (subsystem_vendor_id == PCI_VENDOR_AVERMEDIA) {
    619                     bktr->card = cards[ (card = CARD_AVER_MEDIA) ];
    620 		    bktr->card.eepromAddr = eeprom_i2c_address;
    621 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    622                     goto checkTuner;
    623                 }
    624 
    625                 if (subsystem_vendor_id == PCI_VENDOR_HAUPPAUGE) {
    626                     bktr->card = cards[ (card = CARD_HAUPPAUGE) ];
    627 		    bktr->card.eepromAddr = eeprom_i2c_address;
    628 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    629                     goto checkTuner;
    630                 }
    631 
    632                 if (subsystem_vendor_id == PCI_VENDOR_FLYVIDEO) {
    633                     bktr->card = cards[ (card = CARD_FLYVIDEO) ];
    634 		    bktr->card.eepromAddr = eeprom_i2c_address;
    635 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    636                     goto checkTuner;
    637                 }
    638 
    639                 if (subsystem_vendor_id == PCI_VENDOR_STB) {
    640                     bktr->card = cards[ (card = CARD_STB) ];
    641 		    bktr->card.eepromAddr = eeprom_i2c_address;
    642 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    643                     goto checkTuner;
    644                 }
    645 
    646                 if (subsystem_vendor_id == PCI_VENDOR_ASKEY) {
    647                     bktr->card = cards[ (card = CARD_ASKEY_DYNALINK_MAGIC_TVIEW) ];
    648 		    bktr->card.eepromAddr = eeprom_i2c_address;
    649 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    650                     goto checkTuner;
    651                 }
    652 
    653                 if (subsystem_vendor_id == PCI_VENDOR_LEADTEK_ALT) {
    654                     bktr->card = cards[ (card = CARD_LEADTEK) ];
    655 		    bktr->card.eepromAddr = eeprom_i2c_address;
    656 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    657                     goto checkTuner;
    658                 }
    659 
    660 		if (subsystem_vendor_id == PCI_VENDOR_PINNACLE_ALT) {
    661                     bktr->card = cards[ (card = CARD_MIRO) ];
    662 		    bktr->card.eepromAddr = eeprom_i2c_address;
    663 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    664                     goto checkTuner;
    665 		}
    666 
    667                 /* Vendor is unknown. We will use the standard probe code */
    668 		/* which may not give best results */
    669                 printf("%s: Warning - card vendor 0x%04x (model 0x%04x) unknown.\n",
    670 		       bktr_name(bktr), subsystem_vendor_id, subsystem_id);
    671             }
    672 	    else
    673 	    {
    674                 printf("%s: Card has no configuration EEPROM. Cannot determine card make.\n",
    675 		       bktr_name(bktr));
    676 	    }
    677 	} /* end of bt878/bt879 card detection code */
    678 
    679 	/* If we get to this point, we must have a Bt848/848A/849A card */
    680 	/* or a Bt878/879 with an unknown subsystem vendor id */
    681         /* Try and determine the make of card by clever i2c probing */
    682 
    683    	/* Check for i2c devices. If none, move on */
    684 	if (!any_i2c_devices) {
    685 		bktr->card = cards[ (card = CARD_INTEL) ];
    686 		bktr->card.eepromAddr = 0;
    687 		bktr->card.eepromSize = 0;
    688 		goto checkTuner;
    689 	}
    690 
    691         /* Look for Hauppauge, STB and Osprey cards by the presence */
    692 	/* of an EEPROM */
    693         /* Note: Bt878 based cards also use EEPROMs so we can only do this */
    694         /* test on BT848/848A and 849A based cards. */
    695 	if ((bktr->id==BROOKTREE_848)  ||
    696 	    (bktr->id==BROOKTREE_848A) ||
    697 	    (bktr->id==BROOKTREE_849A)) {
    698 
    699             /* At i2c address 0xa0, look for Hauppauge and Osprey cards */
    700             if ( (status = i2cRead( bktr, PFC8582_RADDR )) != ABSENT ) {
    701 
    702 		    /* Read the eeprom contents */
    703 		    bktr->card = cards[ (card = CARD_UNKNOWN) ];
    704 		    bktr->card.eepromAddr = PFC8582_WADDR;
    705 		    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    706 	            readEEProm(bktr, 0, 128, (u_char *) &eeprom );
    707 
    708 		    /* For Hauppauge, check the EEPROM begins with 0x84 */
    709 		    if (eeprom[0] == 0x84) {
    710                             bktr->card = cards[ (card = CARD_HAUPPAUGE) ];
    711 			    bktr->card.eepromAddr = PFC8582_WADDR;
    712 			    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    713                             goto checkTuner;
    714 		    }
    715 
    716 		    /* For Osprey, check the EEPROM begins with "MMAC" */
    717 		    if (  (eeprom[0] == 'M') &&(eeprom[1] == 'M')
    718 			&&(eeprom[2] == 'A') &&(eeprom[3] == 'C')) {
    719                             bktr->card = cards[ (card = CARD_OSPREY) ];
    720 			    bktr->card.eepromAddr = PFC8582_WADDR;
    721 			    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    722                             goto checkTuner;
    723 		    }
    724 		    printf("%s: Warning: Unknown card type. EEPROM data not recognised\n",
    725 			   bktr_name(bktr));
    726 		    printf("%s: %x %x %x %x\n", bktr_name(bktr),
    727 			   eeprom[0],eeprom[1],eeprom[2],eeprom[3]);
    728             }
    729 
    730             /* look for an STB card */
    731             if ( (status = i2cRead( bktr, X24C01_RADDR )) != ABSENT ) {
    732                     bktr->card = cards[ (card = CARD_STB) ];
    733 		    bktr->card.eepromAddr = X24C01_WADDR;
    734 		    bktr->card.eepromSize = (u_char)(128 / EEPROMBLOCKSIZE);
    735                     goto checkTuner;
    736             }
    737 
    738 	}
    739 
    740 	signCard( bktr, 1, 128, (u_char *)  &probe_signature );
    741 
    742 	if (bootverbose) {
    743 	  printf("%s: card signature: ", bktr_name(bktr));
    744 	  for (j = 0; j < Bt848_MAX_SIGN; j++) {
    745 	    printf(" %02x ", probe_signature[j]);
    746 	  }
    747 	  printf("\n\n");
    748 	}
    749 	for (i = 0;
    750 	     i < (sizeof bt848_card_signature)/ sizeof (struct bt848_card_sig);
    751 	     i++ ) {
    752 
    753 	  card_found = 1;
    754 	  probe_temp = (u_char *) &bt848_card_signature[i].signature;
    755 
    756 	  for (j = 0; j < Bt848_MAX_SIGN; j++) {
    757 	    if ((probe_temp[j] & 0xf) != (probe_signature[j] & 0xf)) {
    758 	      card_found = 0;
    759 	      break;
    760 	    }
    761 
    762 	  }
    763 	  if (card_found) {
    764 	    bktr->card = cards[ card = bt848_card_signature[i].card];
    765 	    eeprom_i2c_address = locate_eeprom_address( bktr );
    766 	    if (eeprom_i2c_address != -1) {
    767 		bktr->card.eepromAddr = eeprom_i2c_address;
    768 		bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    769 	    } else {
    770 		bktr->card.eepromAddr = 0;
    771 		bktr->card.eepromSize = 0;
    772 	    }
    773 	    tuner_i2c_address = locate_tuner_address( bktr );
    774 	    select_tuner( bktr, bt848_card_signature[i].tuner );
    775 	    goto checkDBX;
    776 	  }
    777 	}
    778 
    779 	/* We do not know the card type. Default to Miro */
    780 	bktr->card = cards[ (card = CARD_MIRO) ];
    781 
    782 
    783 checkEEPROM:
    784 	/* look for a configuration eeprom */
    785 	eeprom_i2c_address = locate_eeprom_address( bktr );
    786 	if (eeprom_i2c_address != -1) {
    787 	    bktr->card.eepromAddr = eeprom_i2c_address;
    788 	    bktr->card.eepromSize = (u_char)(256 / EEPROMBLOCKSIZE);
    789 	} else {
    790 	    bktr->card.eepromAddr = 0;
    791 	    bktr->card.eepromSize = 0;
    792 	}
    793 
    794 
    795 checkTuner:
    796 
    797 	/* look for a tuner */
    798 	tuner_i2c_address = locate_tuner_address( bktr );
    799 	if ( tuner_i2c_address == -1 ) {
    800 		select_tuner( bktr, NO_TUNER );
    801 		goto checkDBX;
    802 	}
    803 
    804 #if defined( BKTR_OVERRIDE_TUNER )
    805 	select_tuner( bktr, BKTR_OVERRIDE_TUNER );
    806 	goto checkDBX;
    807 #endif
    808 	if (bktr->bt848_tuner != -1 ) {
    809 	  select_tuner( bktr, bktr->bt848_tuner & 0xff );
    810 	  goto checkDBX;
    811 	}
    812 
    813 	/* Check for i2c devices */
    814 	if (!any_i2c_devices) {
    815 		select_tuner( bktr, NO_TUNER );
    816 		goto checkDBX;
    817 	}
    818 
    819 	/* differentiate type of tuner */
    820 
    821 	switch (card) {
    822 	case CARD_MIRO:
    823 	    switch (((INL(bktr, BKTR_GPIO_DATA) >> 10)-1)&7) {
    824 	    case 0: select_tuner( bktr, TEMIC_PAL ); break;
    825 	    case 1: select_tuner( bktr, PHILIPS_PAL ); break;
    826 	    case 2: select_tuner( bktr, PHILIPS_NTSC ); break;
    827 	    case 3: select_tuner( bktr, PHILIPS_SECAM ); break;
    828 	    case 4: select_tuner( bktr, NO_TUNER ); break;
    829 	    case 5: select_tuner( bktr, PHILIPS_PALI ); break;
    830 	    case 6: select_tuner( bktr, TEMIC_NTSC ); break;
    831 	    case 7: select_tuner( bktr, TEMIC_PALI ); break;
    832 	    }
    833 	    goto checkDBX;
    834 	    break;
    835 
    836 	case CARD_HAUPPAUGE:
    837 	    /* Hauppauge kindly supplied the following Tuner Table */
    838 	    /* FIXME: I think the tuners the driver selects for types */
    839 	    /* 0x08 and 0x15 may be incorrect but no one has complained. */
    840 	    /* Old Temic tuners had their own API, but newer Temic tuners */
    841 	    /* have the same API as Philips tuners */
    842 	    /*
    843   ID  Tuner Model           Format			We select Format
    844  0x00 NONE
    845  0x01 EXTERNAL
    846  0x02 OTHER
    847  0x03 Philips FI1216        BG
    848  0x04 Philips FI1216MF      BGLL'			PHILIPS_SECAM
    849  0x05 Philips FI1236        MN 				PHILIPS_NTSC
    850  0x06 Philips FI1246        I 				PHILIPS_PALI
    851  0x07 Philips FI1256        DK
    852  0x08 Philips FI1216 MK2    BG 				PHILIPS_PALI
    853  0x09 Philips FI1216MF MK2  BGLL' 			PHILIPS_SECAM
    854  0x0a Philips FI1236 MK2    MN 				PHILIPS_NTSC
    855  0x0b Philips FI1246 MK2    I 				PHILIPS_PALI
    856  0x0c Philips FI1256 MK2    DK
    857  0x0d Temic 4032FY5         NTSC			TEMIC_NTSC
    858  0x0e Temic 4002FH5         BG				TEMIC_PAL
    859  0x0f Temic 4062FY5         I 				TEMIC_PALI
    860  0x10 Philips FR1216 MK2    BG
    861  0x11 Philips FR1216MF MK2  BGLL' 			PHILIPS_FR1236_SECAM
    862  0x12 Philips FR1236 MK2    MN 				PHILIPS_FR1236_NTSC
    863  0x13 Philips FR1246 MK2    I
    864  0x14 Philips FR1256 MK2    DK
    865  0x15 Philips FM1216        BG 				PHILIPS_FR1216_PAL
    866  0x16 Philips FM1216MF      BGLL' 			PHILIPS_FR1236_SECAM
    867  0x17 Philips FM1236        MN 				PHILIPS_FR1236_NTSC
    868  0x18 Philips FM1246        I
    869  0x19 Philips FM1256        DK
    870  0x1a Temic 4036FY5         MN (FI1236 MK2 clone)	PHILIPS_NTSC
    871  0x1b Samsung TCPN9082D     MN
    872  0x1c Samsung TCPM9092P     Pal BG/I/DK
    873  0x1d Temic 4006FH5         BG				PHILIPS_PALI
    874  0x1e Samsung TCPN9085D     MN/Radio
    875  0x1f Samsung TCPB9085P     Pal BG/I/DK / Radio
    876  0x20 Samsung TCPL9091P     Pal BG & Secam L/L'
    877  0x21 Temic 4039FY5         NTSC Radio
    878  0x22 Philips FQ1216ME      Pal BGIDK & Secam L/L'
    879  0x23 Temic 4066FY5         Pal I (FI1246 MK2 clone)	PHILIPS_PALI
    880  0x24 Philips TD1536        MN/ATSCDigital
    881  0x25 Philips TD1536D       MN/ATSCDigital DUAL INPUT
    882  0x26 Philips FMR1236       M/N FM(no demod)
    883  0x27 Philips FI1256MP      B/G, D/K
    884  0x28 Samsung TCPQ9091P     BG/I/DK, L/L'
    885  0x29 Temic 4006FN5         BG/I/DK
    886  0x2a Temic 4009FR5         BG FM
    887  0x2b Temic 4046FM5         B/G, I, D/K, L/L'
    888  0x2c Temic 4009FN5         B/G, I, D/K, FM (no demod)
    889  0x2d Philips TD1536D_FH_44 MN/ATSCDigital DUAL INPUT
    890 	    */
    891 
    892 
    893 
    894 	    /* Determine the model number from the eeprom */
    895 	    if (bktr->card.eepromAddr != 0) {
    896 		u_int model;
    897 		u_int revision;
    898 
    899 		readEEProm(bktr, 0, 128, (u_char *) &eeprom );
    900 
    901 		model    = (eeprom[12] << 8  | eeprom[11]);
    902 		revision = (eeprom[15] << 16 | eeprom[14] << 8 | eeprom[13]);
    903 		if (verbose)
    904 		    printf("%s: Hauppauge Model %d %c%c%c%c\n",
    905 			   bktr_name(bktr),
    906 			   model,
    907 			   ((revision >> 18) & 0x3f) + 32,
    908 			   ((revision >> 12) & 0x3f) + 32,
    909 			   ((revision >>  6) & 0x3f) + 32,
    910 			   ((revision >>  0) & 0x3f) + 32 );
    911 
    912 	        /* Determine the tuner type from the eeprom */
    913 		tuner_code = eeprom[9];
    914 		switch (tuner_code) {
    915 
    916 		  case 0x5:
    917                   case 0x0a:
    918                   case 0x1a:
    919 		    select_tuner( bktr, PHILIPS_NTSC );
    920 		    goto checkDBX;
    921 
    922 		  case 0x4:
    923                   case 0x9:
    924 		    select_tuner( bktr, PHILIPS_SECAM );
    925 		    goto checkDBX;
    926 
    927                   case 0x11:
    928 	          case 0x16:
    929 		    select_tuner( bktr, PHILIPS_FR1236_SECAM );
    930 		    goto checkDBX;
    931 
    932                   case 0x12:
    933 	          case 0x17:
    934 		    select_tuner( bktr, PHILIPS_FR1236_NTSC );
    935 		    goto checkDBX;
    936 
    937 		  case 0x6:
    938 	          case 0x8:
    939 	          case 0xb:
    940 	          case 0x1d:
    941 	          case 0x23:
    942 		    select_tuner( bktr, PHILIPS_PALI );
    943 		    goto checkDBX;
    944 
    945 	          case 0xd:
    946 		    select_tuner( bktr, TEMIC_NTSC );
    947 		    goto checkDBX;
    948 
    949                   case 0xe:
    950 		    select_tuner( bktr, TEMIC_PAL );
    951 		    goto checkDBX;
    952 
    953 	          case 0xf:
    954 		    select_tuner( bktr, TEMIC_PALI );
    955 		    goto checkDBX;
    956 
    957                   case 0x15:
    958 		    select_tuner( bktr, PHILIPS_FR1216_PAL );
    959 		    goto checkDBX;
    960 
    961 	          default :
    962 		    printf("%s: Warning - Unknown Hauppauge Tuner 0x%x\n",
    963 			   bktr_name(bktr), tuner_code);
    964 		}
    965 	    }
    966 	    break;
    967 
    968 
    969 	case CARD_AVER_MEDIA:
    970 	    /* AVerMedia kindly supplied some details of their EEPROM contents
    971 	     * which allow us to auto select the Tuner Type.
    972 	     * Only the newer AVerMedia cards actually have an EEPROM.
    973 	     */
    974 	    if (bktr->card.eepromAddr != 0) {
    975 
    976 		u_char tuner_make;   /* Eg Philips, Temic */
    977 		u_char tuner_tv_fm;  /* TV or TV with FM Radio */
    978 		u_char tuner_format; /* Eg NTSC, PAL, SECAM */
    979 		int    tuner;
    980 
    981 		int tuner_0_table[] = {
    982 			PHILIPS_NTSC,  PHILIPS_PAL,
    983 			PHILIPS_PAL,   PHILIPS_PAL,
    984 			PHILIPS_PAL,   PHILIPS_PAL,
    985 			PHILIPS_SECAM, PHILIPS_SECAM,
    986 			PHILIPS_SECAM, PHILIPS_PAL};
    987 
    988 		int tuner_0_fm_table[] = {
    989 			PHILIPS_FR1236_NTSC,  PHILIPS_FR1216_PAL,
    990 			PHILIPS_FR1216_PAL,   PHILIPS_FR1216_PAL,
    991 			PHILIPS_FR1216_PAL,   PHILIPS_FR1216_PAL,
    992 			PHILIPS_FR1236_SECAM, PHILIPS_FR1236_SECAM,
    993 			PHILIPS_FR1236_SECAM, PHILIPS_FR1216_PAL};
    994 
    995 		int tuner_1_table[] = {
    996 			TEMIC_NTSC,  TEMIC_PAL,   TEMIC_PAL,
    997 			TEMIC_PAL,   TEMIC_PAL,   TEMIC_PAL,
    998 			TEMIC_SECAM, TEMIC_SECAM, TEMIC_SECAM,
    999 			TEMIC_PAL};
   1000 
   1001 
   1002 		/* Extract information from the EEPROM data */
   1003 	    	readEEProm(bktr, 0, 128, (u_char *) &eeprom );
   1004 
   1005 		tuner_make   = (eeprom[0x41] & 0x7);
   1006 		tuner_tv_fm  = (eeprom[0x41] & 0x18) >> 3;
   1007 		tuner_format = (eeprom[0x42] & 0xf0) >> 4;
   1008 
   1009 		/* Treat tuner make 0 (Philips) and make 2 (LG) the same */
   1010 		if ( ((tuner_make == 0) || (tuner_make == 2))
   1011 		    && (tuner_format <= 9) && (tuner_tv_fm == 0) ) {
   1012 			tuner = tuner_0_table[tuner_format];
   1013 			select_tuner( bktr, tuner );
   1014 			goto checkDBX;
   1015 		}
   1016 
   1017 		if ( ((tuner_make == 0) || (tuner_make == 2))
   1018 		    && (tuner_format <= 9) && (tuner_tv_fm == 1) ) {
   1019 			tuner = tuner_0_fm_table[tuner_format];
   1020 			select_tuner( bktr, tuner );
   1021 			goto checkDBX;
   1022 		}
   1023 
   1024 		if ( (tuner_make == 1) && (tuner_format <= 9) ) {
   1025 			tuner = tuner_1_table[tuner_format];
   1026 			select_tuner( bktr, tuner );
   1027 			goto checkDBX;
   1028 		}
   1029 
   1030 	    	printf("%s: Warning - Unknown AVerMedia Tuner Make %d Format %d\n",
   1031 			bktr_name(bktr), tuner_make, tuner_format);
   1032 	    }
   1033 	    break;
   1034 
   1035 	case CARD_LEADTEK:
   1036 #if BKTR_SYSTEM_DEFAULT == BROOKTREE_PAL
   1037 	    select_tuner( bktr, PHILIPS_FR1216_PAL );
   1038 #else
   1039 	    select_tuner( bktr, PHILIPS_FR1236_NTSC );
   1040 #endif
   1041             goto checkDBX;
   1042 	    break;
   1043 
   1044 	} /* end switch(card) */
   1045 
   1046 
   1047         /* At this point, a goto checkDBX has not occured */
   1048         /* We have not been able to select a Tuner */
   1049         /* Some cards make use of the tuner address to */
   1050         /* identify the make/model of tuner */
   1051 
   1052         /* At address 0xc0/0xc1 we often find a TEMIC NTSC */
   1053         if ( i2cRead( bktr, 0xc1 ) != ABSENT ) {
   1054 	    select_tuner( bktr, TEMIC_NTSC );
   1055             goto checkDBX;
   1056         }
   1057 
   1058         /* At address 0xc6/0xc7 we often find a PHILIPS NTSC Tuner */
   1059         if ( i2cRead( bktr, 0xc7 ) != ABSENT ) {
   1060 	    select_tuner( bktr, PHILIPS_NTSC );
   1061             goto checkDBX;
   1062         }
   1063 
   1064         /* Address 0xc2/0xc3 is default (or common address) for several */
   1065 	/* tuners and we cannot tell which is which. */
   1066 	/* And for all other tuner i2c addresses, select the default */
   1067 	select_tuner( bktr, DEFAULT_TUNER );
   1068 
   1069 
   1070 checkDBX:
   1071 #if defined( BKTR_OVERRIDE_DBX )
   1072 	bktr->card.dbx = BKTR_OVERRIDE_DBX;
   1073 	goto checkMSP;
   1074 #endif
   1075    /* Check for i2c devices */
   1076 	if (!any_i2c_devices) {
   1077 		goto checkMSP;
   1078 	}
   1079 
   1080 	/* probe for BTSC (dbx) chip */
   1081 	if ( i2cRead( bktr, TDA9850_RADDR ) != ABSENT )
   1082 		bktr->card.dbx = 1;
   1083 
   1084 checkMSP:
   1085 	/* If this is a Hauppauge Bt878 card, we need to enable the
   1086 	 * MSP 34xx audio chip.
   1087 	 * If this is a Hauppauge Bt848 card, reset the MSP device.
   1088 	 * The MSP reset line is wired to GPIO pin 5. On Bt878 cards a pulldown
   1089 	 * resistor holds the device in reset until we set GPIO pin 5.
   1090          */
   1091 
   1092 	/* Optionally skip the MSP reset. This is handy if you initialise the
   1093 	 * MSP audio in another operating system (eg Windows) first and then
   1094 	 * do a soft reboot.
   1095 	 */
   1096 
   1097 #ifndef BKTR_NO_MSP_RESET
   1098 	if (card == CARD_HAUPPAUGE) {
   1099             OUTL(bktr, BKTR_GPIO_OUT_EN, INL(bktr, BKTR_GPIO_OUT_EN) | (1<<5));
   1100             OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
   1101             DELAY(2500); /* wait 2.5ms */
   1102             OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) & ~(1<<5)); /* write '0' */
   1103             DELAY(2500); /* wait 2.5ms */
   1104             OUTL(bktr, BKTR_GPIO_DATA, INL(bktr, BKTR_GPIO_DATA) | (1<<5));  /* write '1' */
   1105             DELAY(2500); /* wait 2.5ms */
   1106         }
   1107 #endif
   1108 
   1109 #if defined( BKTR_OVERRIDE_MSP )
   1110 	bktr->card.msp3400c = BKTR_OVERRIDE_MSP;
   1111 	goto checkMSPEnd;
   1112 #endif
   1113 
   1114 	/* Check for i2c devices */
   1115 	if (!any_i2c_devices) {
   1116 		goto checkMSPEnd;
   1117 	}
   1118 
   1119 	if ( i2cRead( bktr, MSP3400C_RADDR ) != ABSENT ) {
   1120 		bktr->card.msp3400c = 1;
   1121 	}
   1122 
   1123 checkMSPEnd:
   1124 
   1125 	if (bktr->card.msp3400c) {
   1126 		bktr->msp_addr = MSP3400C_WADDR;
   1127 		msp_read_id( bktr );
   1128 		printf("%s: Detected a MSP%s at 0x%x\n", bktr_name(bktr),
   1129 		       bktr->msp_version_string,
   1130 		       bktr->msp_addr);
   1131 
   1132 	}
   1133 
   1134 /* Check for Dolby Surround Sound DPL3518A sound chip */
   1135 	if ( i2cRead( bktr, DPL3518A_RADDR ) != ABSENT ) {
   1136 		bktr->card.dpl3518a = 1;
   1137 	}
   1138 
   1139 	if (bktr->card.dpl3518a) {
   1140 		bktr->dpl_addr = DPL3518A_WADDR;
   1141 		dpl_read_id( bktr );
   1142 		printf("%s: Detected a DPL%s at 0x%x\n", bktr_name(bktr),
   1143 		       bktr->dpl_version_string,
   1144 		       bktr->dpl_addr);
   1145 	}
   1146 
   1147 /* Start of Check Remote */
   1148         /* Check for the Hauppauge IR Remote Control */
   1149         /* If there is an external unit, the internal will be ignored */
   1150 
   1151         bktr->remote_control = 0; /* initial value */
   1152 
   1153         if (any_i2c_devices) {
   1154             if (i2cRead( bktr, HAUP_REMOTE_EXT_RADDR ) != ABSENT )
   1155                 {
   1156                 bktr->remote_control      = 1;
   1157                 bktr->remote_control_addr = HAUP_REMOTE_EXT_RADDR;
   1158                 }
   1159             else if (i2cRead( bktr, HAUP_REMOTE_INT_RADDR ) != ABSENT )
   1160                 {
   1161                 bktr->remote_control      = 1;
   1162                 bktr->remote_control_addr = HAUP_REMOTE_INT_RADDR;
   1163                 }
   1164 
   1165         }
   1166         /* If a remote control is found, poll it 5 times to turn off the LED */
   1167         if (bktr->remote_control) {
   1168                 int i;
   1169                 for (i=0; i<5; i++)
   1170                         i2cRead( bktr, bktr->remote_control_addr );
   1171         }
   1172 /* End of Check Remote */
   1173 
   1174 #if defined( BKTR_USE_PLL )
   1175 	bktr->xtal_pll_mode = BT848_USE_PLL;
   1176 	goto checkPLLEnd;
   1177 #endif
   1178 	/* Default is to use XTALS and not PLL mode */
   1179 	bktr->xtal_pll_mode = BT848_USE_XTALS;
   1180 
   1181 	/* Enable PLL mode for OSPREY users */
   1182 	if (card == CARD_OSPREY)
   1183 		bktr->xtal_pll_mode = BT848_USE_PLL;
   1184 
   1185 	/* Enable PLL mode for Video Highway Xtreme users */
   1186 	if (card == CARD_VIDEO_HIGHWAY_XTREME)
   1187 		bktr->xtal_pll_mode = BT848_USE_PLL;
   1188 
   1189 
   1190 	/* Most (perhaps all) Bt878 cards need to be switched to PLL mode */
   1191 	/* as they only fit the NTSC crystal to their cards */
   1192 	/* Default to enabling PLL mode for all Bt878/879 cards */
   1193 
   1194 	if ((bktr->id==BROOKTREE_878 || bktr->id==BROOKTREE_879) )
   1195 		bktr->xtal_pll_mode = BT848_USE_PLL;
   1196 
   1197 
   1198 #if defined( BKTR_USE_PLL )
   1199 checkPLLEnd:
   1200 #endif
   1201 
   1202 
   1203 	bktr->card.tuner_pllAddr = tuner_i2c_address;
   1204 
   1205 	if ( verbose ) {
   1206 		printf( "%s: %s", bktr_name(bktr), bktr->card.name );
   1207 		if ( bktr->card.tuner )
   1208 			printf( ", %s tuner", bktr->card.tuner->name );
   1209 		if ( bktr->card.dbx )
   1210 			printf( ", dbx stereo" );
   1211 		if ( bktr->card.msp3400c )
   1212 			printf( ", msp3400c stereo" );
   1213 		if ( bktr->card.dpl3518a )
   1214 			printf( ", dpl3518a dolby" );
   1215                 if ( bktr->remote_control )
   1216                         printf( ", remote control" );
   1217 		printf( ".\n" );
   1218 	}
   1219 }
   1220 
   1221 #undef ABSENT
   1222