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1.31 Randall Hopper <rhh@ct.picker.com>

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submitted ioctl to clear the video buffer
                           prior to starting video capture
			   Amancio : clean up yuv12 so that it does not
                           affect rgb capture. Basically, fxtv after
                           capturing in yuv12 mode , switching to rgb
                           would cause the video capture to be too bright.
1.32                       disable inverse gamma function for rgb and yuv
                           capture. fixed meteor brightness ioctl it now
                           converts the brightness value from unsigned to
                           signed.
1.33                       added sysctl: hw.bt848.tuner, hw.bt848.reverse_mute,
                           hw.bt848.card
			   card takes a value from 0 to bt848_max_card
                           tuner takes a value from 0 to bt848_max_tuner
                           reverse_mute : 0 no effect, 1 reverse tuner
                           mute function some tuners are wired reversed :(
This commit is contained in:
Amancio Hasty 1998-05-16 07:07:10 +00:00
parent d32ff0376f
commit c1224bb717
8 changed files with 911 additions and 567 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

703
sys/dev/bktr/bktr_core.c
View File

@ -1,4 +1,4 @@
/* BT848 1.30 Driver for Brooktree's Bt848 based cards.
/* BT848 1.33 Driver for Brooktree's Bt848 based cards.
The Brooktree BT848 Driver driver is based upon Mark Tinguely and
Jim Lowe's driver for the Matrox Meteor PCI card . The
Philips SAA 7116 and SAA 7196 are very different chipsets than
@ -230,6 +230,23 @@
format change.
1.30 Bring back Frank Nobis <fn@Radio-do.de>'s opt_bktr.h
1.31 Randall Hopper <rhh@ct.picker.com>
submitted ioctl to clear the video buffer
prior to starting video capture
Amancio : clean up yuv12 so that it does not
affect rgb capture. Basically, fxtv after
capturing in yuv12 mode , switching to rgb
would cause the video capture to be too bright.
1.32 disable inverse gamma function for rgb and yuv
capture. fixed meteor brightness ioctl it now
converts the brightness value from unsigned to
signed.
1.33 added sysctl: hw.bt848.tuner, hw.bt848.reverse_mute,
hw.bt848.card
card takes a value from 0 to bt848_max_card
tuner takes a value from 0 to bt848_max_tuner
reverse_mute : 0 no effect, 1 reverse tuner
mute function some tuners are wired reversed :(
*/
#define DDB(x) x
@ -268,6 +285,16 @@
#include <machine/ioctl_meteor.h>
#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
#include <pci/brktree_reg.h>
#include <vm/vm.h>
#include <sys/sysctl.h>
static int bt848_card = -1;
static int bt848_tuner = -1;
static int bt848_reverse_mute = -1;
SYSCTL_NODE(_hw, OID_AUTO, bt848, CTLFLAG_RW, 0, "Bt848 Driver mgmt");
SYSCTL_INT(_hw_bt848, OID_AUTO, card, CTLFLAG_RW, &bt848_card, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, tuner, CTLFLAG_RW, &bt848_tuner, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, reverse_mute, CTLFLAG_RW, &bt848_reverse_mute, -1, "");
typedef int ioctl_cmd_t;
#endif /* __FreeBSD__ */
@ -298,7 +325,6 @@ typedef u_char bool_t;
static void bktr_intr __P((void *arg));
/*
* memory allocated for DMA programs
*/
@ -653,6 +679,268 @@ static struct {
/* the GPIO bits that control the audio MUXes */
#define GPIO_AUDIOMUX_BITS 0x0f
/*
* the data for each type of tuner
*
* if probeCard() fails to detect the proper tuner on boot you can
* override it by setting the following define to the tuner present:
*
#define OVERRIDE_TUNER <tuner type>
*
* where <tuner type> is one of the following tuner defines.
*/
/* indexes into tuners[] */
#define NO_TUNER 0
#define TEMIC_NTSC 1
#define TEMIC_PAL 2
#define TEMIC_SECAM 3
#define PHILIPS_NTSC 4
#define PHILIPS_PAL 5
#define PHILIPS_SECAM 6
#define TEMIC_PALI 7
#define PHILIPS_PALI 8
#define PHILIPS_FR1236_NTSC 9
#define PHILIPS_FR1216_PAL 10
#define Bt848_MAX_TUNER 11
/* XXX FIXME: this list is incomplete */
/* input types */
#define TTYPE_XXX 0
#define TTYPE_NTSC 1
#define TTYPE_NTSC_J 2
#define TTYPE_PAL 3
#define TTYPE_PAL_M 4
#define TTYPE_PAL_N 5
#define TTYPE_SECAM 6
/**
struct TUNER {
char* name;
u_char type;
u_char pllAddr;
u_char pllControl;
u_char bandLimits[ 2 ];
u_char bandAddrs[ 3 ];
};
*/
static const struct TUNER tuners[] = {
/* XXX FIXME: fill in the band-switch crosspoints */
/* NO_TUNER */
{ "<none>", /* the 'name' */
TTYPE_XXX, /* input type */
0x00, /* PLL write address */
{ 0x00, /* control byte for PLL */
0x00,
0x00,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
/* TEMIC_NTSC */
{ "Temic NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
TEMIC_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_PAL */
{ "Temic PAL", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_SECAM */
{ "Temic SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_NTSC */
{ "Philips NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
/* PHILIPS_SECAM */
{ "Philips SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
/* TEMIC_PAL I */
{ "Temic PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1236_NTSC */
{ "Philips FR1236 NTSC FM", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_FR1236_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00},
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1216_PAL */
{ "Philips FR1216 PAL FM", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_FR1216_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
};
/******************************************************************************
* card probe
*/
/*
* the recognized cards, used as indexes of several tables.
*
* if probeCard() fails to detect the proper card on boot you can
* override it by setting the following define to the card you are using:
*
#define OVERRIDE_CARD <card type>
*
* where <card type> is one of the following card defines.
*/
#define CARD_UNKNOWN 0
#define CARD_MIRO 1
#define CARD_HAUPPAUGE 2
#define CARD_STB 3
#define CARD_INTEL 4
#define CARD_IMS_TURBO 5
#define Bt848_MAX_CARD 6
/*
* 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 */
{ "Unknown", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* EEProm unknown */
{ 0, 0, 0, 0, 0 } },
/* CARD_MIRO */
{ "Miro TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* size unknown */
{ 0x02, 0x01, 0x00, 0x0a, 1 } }, /* XXX ??? */
/* CARD_HAUPPAUGE */
{ "Hauppauge WinCast/TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } }, /* audio MUX values */
/* CARD_STB */
{ "STB TV/PCI", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
X24C01_WADDR, /* EEProm type */
(u_char)(128 / EEPROMBLOCKSIZE), /* 128 bytes */
{ 0x00, 0x01, 0x02, 0x02, 1 } }, /* audio MUX values */
/* CARD_INTEL */
{ "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
NULL, /* the tuner */
0,
0,
0,
0,
{ 0, 0, 0, 0, 0 } },
/* CARD_IMS_TURBO */
{ "IMS TV Turbo", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } } /* audio MUX values */
};
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}}
};
/* debug utility for holding previous INT_STAT contents */
#define STATUS_SUM
@ -900,6 +1188,7 @@ bktr_attach( ATTACH_ARGS )
bt848->gpio_dma_ctl = FIFO_RISC_DISABLED;
}
bktr->clr_on_start = FALSE;
/* defaults for the tuner section of the card */
bktr->tflags = TUNER_INITALIZED;
bktr->tuner.frequency = 0;
@ -907,6 +1196,9 @@ bktr_attach( ATTACH_ARGS )
bktr->tuner.chnlset = DEFAULT_CHNLSET;
bktr->audio_mux_select = 0;
bktr->audio_mute_state = FALSE;
bktr->bt848_card = -1;
bktr->bt848_tuner = -1;
bktr->reverse_mute = -1;
probeCard( bktr, TRUE );
@ -969,9 +1261,9 @@ bktr_intr( void *arg )
status_sum |= (bktr_status & ~(BT848_INT_RSV0|BT848_INT_RSV1));
status_sum |= ((dstatus & (BT848_DSTATUS_COF|BT848_DSTATUS_LOF)) << 6);
#endif /* STATUS_SUM */
/* printf( " STATUS %x %x %x \n",
/* printf( " STATUS %x %x %x \n",
dstatus, bktr_status, bt848->risc_count );
*/
*/
/* if risc was disabled re-start process again */
if ( !(bktr_status & BT848_INT_RISC_EN) ||
((bktr_status &(BT848_INT_FBUS |
@ -1192,6 +1484,36 @@ bktr_open( dev_t dev, int flags, int fmt, struct proc *p )
if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
return( ENXIO );
if (bt848_card != -1) {
if ((bt848_card >> 8 == unit ) &&
( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
if ( bktr->bt848_card != (bt848_card & 0xff) ) {
bktr->bt848_card = (bt848_card & 0xff);
probeCard(bktr, FALSE);
}
}
}
if (bt848_tuner != -1) {
if ((bt848_tuner >> 8 == unit ) &&
( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
bktr->bt848_tuner = (bt848_tuner & 0xff);
probeCard(bktr, FALSE);
}
}
}
if (bt848_reverse_mute != -1) {
if (((bt848_reverse_mute >> 8) == unit ) &&
((bt848_reverse_mute & 0xff) < Bt848_MAX_TUNER) ) {
bktr->reverse_mute = bt848_reverse_mute & 0xff;
bt848_reverse_mute = -1;
}
}
switch ( MINOR( minor(dev) ) ) {
case VIDEO_DEV:
return( video_open( bktr ) );
@ -1223,10 +1545,11 @@ video_open( bktr_ptr_t bktr )
dump_bt848( bt848 );
#endif
bktr->clr_on_start = FALSE;
bt848->dstatus = 0x00; /* clear device status reg. */
bt848->adc = SYNC_LEVEL;
bt848->iform = BT848_IFORM_M_MUX1 |
BT848_IFORM_X_XT0 |
BT848_IFORM_F_NTSCM;
@ -1235,7 +1558,7 @@ video_open( bktr_ptr_t bktr )
bktr->max_clip_node = 0;
bt848->color_ctl_gamma = 0;
bt848->color_ctl_gamma = 1;
bt848->color_ctl_rgb_ded = 1;
bt848->color_ctl_color_bars = 0;
bt848->color_ctl_ext_frmrate = 0;
@ -1270,8 +1593,8 @@ video_open( bktr_ptr_t bktr )
bt848->int_mask = BT848_INT_MYSTERYBIT; /* what does this bit do ??? */
/* wait 2 seconds while bt848 initialises */
tsleep( (caddr_t)bktr, PZERO, "btinit", hz*2 );
/* wait .25 seconds while bt848 initialises */
tsleep( (caddr_t)bktr, PZERO, "btinit", hz/4 );
return( 0 );
}
@ -1502,7 +1825,8 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
vm_offset_t buf;
struct format_params *fp;
int i;
char char_temp;
bt848 = bktr->base;
switch ( cmd ) {
@ -1709,7 +2033,9 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
break;
case METEORSBRIG: /* set brightness */
bt848->bright = *(u_char *)arg & 0xff;
char_temp = ( *(u_char *)arg & 0xff) - 128;
bt848->bright = char_temp;
break;
case METEORGBRIG: /* get brightness */
@ -1759,6 +2085,14 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
*(u_char *)arg = (u_char)((temp >> 1) & 0xff);
break;
case BT848SCBUF: /* set Clear-Buffer-on-start flag */
bktr->clr_on_start = (*(int *)arg != 0);
break;
case BT848GCBUF: /* get Clear-Buffer-on-start flag */
*(int *)arg = (int) bktr->clr_on_start;
break;
case METEORSSIGNAL:
if(*(int *)arg == 0 || *(int *)arg >= NSIG) {
return( EINVAL );
@ -2712,10 +3046,18 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
bt848->vbi_pack_size = 0;
bt848->vbi_pack_del = 0;
bt848->adc = SYNC_LEVEL;
bt848->color_ctl_rgb_ded = 1;
bt848->e_vscale_hi |= 0xc0;
bt848->o_vscale_hi |= 0xc0;
bt848->oform = 0x00;
bt848->e_vscale_hi |= 0x40; /* set chroma comb */
bt848->o_vscale_hi |= 0x40;
bt848->e_vscale_hi &= ~0x80; /* clear Ycomb */
bt848->o_vscale_hi &= ~0x80;
/* disable gamma correction removal */
bt848->color_ctl_gamma = 1;
if (cols > 385 ) {
bt848->e_vtc = 0;
bt848->o_vtc = 0;
@ -2778,7 +3120,7 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
switch (i_flag) {
case 1:
/* sync vre */
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRE;
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRO;
*dma_prog++ = 0; /* NULL WORD */
*dma_prog++ = OP_JUMP;
@ -2787,7 +3129,7 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
case 2:
/* sync vro */
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRO;
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRE;
*dma_prog++ = 0; /* NULL WORD */
*dma_prog++ = OP_JUMP;
@ -3111,21 +3453,8 @@ yuv12_prog( bktr_ptr_t bktr, char i_flag,
bktr->capcontrol = 1 << 6 | 1 << 4 | 3;
bt848->adc = SYNC_LEVEL;
bt848->oform = 0x00;
bt848->oform = 0x0;
bt848->e_control |= BT848_E_CONTROL_LDEC; /* disable luma decimation */
bt848->o_control |= BT848_O_CONTROL_LDEC;
bt848->e_scloop |= BT848_O_SCLOOP_CAGC; /* chroma agc enable */
bt848->o_scloop |= BT848_O_SCLOOP_CAGC;
bt848->e_vscale_hi &= ~0x80; /* clear Ycomb */
bt848->o_vscale_hi &= ~0x80;
bt848->e_vscale_hi |= 0x40; /* set chroma comb */
bt848->o_vscale_hi |= 0x40;
/* disable gamma correction removal */
bt848->color_ctl_gamma = 1;
/* Construct Write */
inst = OP_WRITE123 | OP_SOL | OP_EOL | (cols);
@ -3372,6 +3701,13 @@ start_capture( bktr_ptr_t bktr, unsigned type )
fp = &format_params[bktr->format_params];
/* If requested, clear out capture buf first */
if (bktr->clr_on_start && (bktr->video.addr == 0)) {
bzero((caddr_t)bktr->bigbuf,
(size_t)bktr->rows * bktr->cols * bktr->frames *
pixfmt_table[ bktr->pixfmt ].public.Bpp);
}
bt848 = bktr->base;
bt848->dstatus = 0;
@ -3760,250 +4096,6 @@ readEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
}
/******************************************************************************
* card probe
*/
/*
* the recognized cards, used as indexes of several tables.
*
* if probeCard() fails to detect the proper card on boot you can
* override it by setting the following define to the card you are using:
*
#define OVERRIDE_CARD <card type>
*
* where <card type> is one of the following card defines.
*/
#define CARD_UNKNOWN 0
#define CARD_MIRO 1
#define CARD_HAUPPAUGE 2
#define CARD_STB 3
#define CARD_INTEL 4
/*
* 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 */
{ "Unknown", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* EEProm unknown */
{ 0, 0, 0, 0, 0 } },
/* CARD_MIRO */
{ "Miro TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* size unknown */
{ 0x02, 0x01, 0x00, 0x0a, 1 } }, /* XXX ??? */
/* CARD_HAUPPAUGE */
{ "Hauppauge WinCast/TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } }, /* audio MUX values */
/* CARD_STB */
{ "STB TV/PCI", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
X24C01_WADDR, /* EEProm type */
(u_char)(128 / EEPROMBLOCKSIZE), /* 128 bytes */
{ 0x00, 0x01, 0x02, 0x02, 1 } }, /* audio MUX values */
/* CARD_INTEL */
{ "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
NULL, /* the tuner */
0,
0,
0,
0,
{ 0, 0, 0, 0, 0 } }
};
/*
* the data for each type of tuner
*
* if probeCard() fails to detect the proper tuner on boot you can
* override it by setting the following define to the tuner present:
*
#define OVERRIDE_TUNER <tuner type>
*
* where <tuner type> is one of the following tuner defines.
*/
/* indexes into tuners[] */
#define NO_TUNER 0
#define TEMIC_NTSC 1
#define TEMIC_PAL 2
#define TEMIC_SECAM 3
#define PHILIPS_NTSC 4
#define PHILIPS_PAL 5
#define PHILIPS_SECAM 6
#define TEMIC_PALI 7
#define PHILIPS_PALI 8
#define PHILIPS_FR1236_NTSC 9
#define PHILIPS_FR1216_PAL 10
/* XXX FIXME: this list is incomplete */
/* input types */
#define TTYPE_XXX 0
#define TTYPE_NTSC 1
#define TTYPE_NTSC_J 2
#define TTYPE_PAL 3
#define TTYPE_PAL_M 4
#define TTYPE_PAL_N 5
#define TTYPE_SECAM 6
/**
struct TUNER {
char* name;
u_char type;
u_char pllAddr;
u_char pllControl;
u_char bandLimits[ 2 ];
u_char bandAddrs[ 3 ];
};
*/
static const struct TUNER tuners[] = {
/* XXX FIXME: fill in the band-switch crosspoints */
/* NO_TUNER */
{ "<none>", /* the 'name' */
TTYPE_XXX, /* input type */
0x00, /* PLL write address */
{ 0x00, /* control byte for PLL */
0x00,
0x00,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
/* TEMIC_NTSC */
{ "Temic NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
TEMIC_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_PAL */
{ "Temic PAL", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_SECAM */
{ "Temic SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_NTSC */
{ "Philips NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
/* PHILIPS_SECAM */
{ "Philips SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
/* TEMIC_PAL I */
{ "Temic PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1236_NTSC */
{ "Philips FR1236 NTSC FM", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_FR1236_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00},
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1216_PAL */
{ "Philips FR1216 PAL FM", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_FR1216_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
};
/*
@ -4022,7 +4114,7 @@ signCard( bktr_ptr_t bktr, int offset, int count, u_char* sig )
for ( x = 0; x < 16; ++x )
sig[ x ] = 0;
for ( x = 0; x < 128; ++x ) {
for ( x = 0; x < count; ++x ) {
if ( i2cRead( bktr, (2 * x) + 1 ) != ABSENT ) {
sig[ x / 8 ] |= (1 << (x % 8) );
}
@ -4068,12 +4160,14 @@ static int check_for_i2c_devices( bktr_ptr_t bktr ){
static void
probeCard( bktr_ptr_t bktr, int verbose )
{
int card;
int card, i,j, card_found;
int status;
bt848_ptr_t bt848;
int any_i2c_devices;
u_char probe_signature[128], *probe_temp;
int any_i2c_devices;
any_i2c_devices = check_for_i2c_devices( bktr );
any_i2c_devices = check_for_i2c_devices( bktr );
bt848 = bktr->base;
bt848->gpio_out_en = 0;
@ -4084,6 +4178,11 @@ probeCard( bktr_ptr_t bktr, int verbose )
bktr->card = cards[ (card = OVERRIDE_CARD) ];
goto checkTuner;
#endif
if (bktr->bt848_card != -1 ) {
bktr->card = cards[ (card = bktr->bt848_card) ];
goto checkTuner;
}
/* Check for i2c devices */
if (!any_i2c_devices) {
@ -4110,6 +4209,35 @@ probeCard( bktr_ptr_t bktr, int verbose )
goto checkTuner;
}
signCard( bktr, 1, 128, (u_char *) &probe_signature );
if (bootverbose) {
printf("card signature \n");
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];
bktr->card.tuner = &tuners[ bt848_card_signature[i].tuner];
goto checkDBX;
}
}
/* XXX FIXME: (how do I) look for a Miro card */
bktr->card = cards[ (card = CARD_MIRO) ];
@ -4118,6 +4246,10 @@ probeCard( bktr_ptr_t bktr, int verbose )
bktr->card.tuner = &tuners[ OVERRIDE_TUNER ];
goto checkDBX;
#endif
if (bktr->bt848_tuner != -1 ) {
bktr->card.tuner = &tuners[ bktr->bt848_tuner & 0xff ];
goto checkDBX;
}
/* Check for i2c devices */
if (!any_i2c_devices) {
@ -4761,6 +4893,12 @@ set_audio( bktr_ptr_t bktr, int cmd )
#else
bktr->audio_mux_select = 0;
#endif
if (bktr->reverse_mute )
bktr->audio_mux_select = 0;
else
bktr->audio_mux_select = 3;
break;
case AUDIO_EXTERN:
bktr->audio_mux_select = 1;
@ -4790,12 +4928,19 @@ set_audio( bktr_ptr_t bktr, int cmd )
/* XXX FIXME: this was an 8 bit reference before new struct ??? */
bt848->gpio_reg_inp = (~GPIO_AUDIOMUX_BITS & 0xff);
if ( bktr->audio_mute_state == TRUE )
if ( bktr->audio_mute_state == TRUE ) {
#ifdef BKTR_REVERSEMUTE
idx = 0;
#else
idx = 3;
#endif
if (bktr->reverse_mute )
idx = 3;
else
idx = 0;
}
else
idx = bktr->audio_mux_select;
@ -4803,7 +4948,7 @@ set_audio( bktr_ptr_t bktr, int cmd )
bt848->gpio_data =
#if defined( AUDIOMUX_DISCOVER )
bt848->gpio_data = temp | (cmd & 0xff);
printf("cmd: %d\n", cmd );
printf("cmd: %d audio mux %x temp %x \n", cmd,bktr->card.audiomuxs[ idx ], temp );
#else
temp | bktr->card.audiomuxs[ idx ];
#endif /* AUDIOMUX_DISCOVER */

12
sys/dev/bktr/bktr_reg.h
View File

@ -369,6 +369,7 @@ struct bktr_softc {
int alloc_pages; /* number of pages in bigbuf */
struct proc *proc; /* process to receive raised signal */
int signal; /* signal to send to process */
int clr_on_start; /* clear cap buf on capture start? */
#define METEOR_SIG_MODE_MASK 0xffff0000
#define METEOR_SIG_FIELD_MODE 0x00010000
#define METEOR_SIG_FRAME_MODE 0x00000000
@ -451,7 +452,18 @@ struct bktr_softc {
int yclip2;
int max_clip_node;
bktr_clip_t clip_list[100];
int reverse_mute;
int bt848_tuner;
int bt848_card;
};
typedef struct bktr_softc bktr_reg_t;
typedef struct bktr_softc* bktr_ptr_t;
#define Bt848_MAX_SIGN 16
struct bt848_card_sig {
int card;
int tuner;
u_char signature[Bt848_MAX_SIGN];
};

5
sys/dev/bktr/ioctl_bt848.h
View File

@ -193,6 +193,11 @@ struct _bktr_clip {
#define BT848SFMT _IOW('x', 67, unsigned long )
#define BT848GFMT _IOR('x', 67, unsigned long )
/* set clear-buffer-on-start */
#define BT848SCBUF _IOW('x', 68, int)
#define BT848GCBUF _IOR('x', 68, int)
/* Read/Write the BT848's I2C bus directly
* b7-b0: data (read/write)
* b15-b8: internal peripheral register (write)

5
sys/i386/include/ioctl_bt848.h
View File

@ -193,6 +193,11 @@ struct _bktr_clip {
#define BT848SFMT _IOW('x', 67, unsigned long )
#define BT848GFMT _IOR('x', 67, unsigned long )
/* set clear-buffer-on-start */
#define BT848SCBUF _IOW('x', 68, int)
#define BT848GCBUF _IOR('x', 68, int)
/* Read/Write the BT848's I2C bus directly
* b7-b0: data (read/write)
* b15-b8: internal peripheral register (write)

33
sys/pci/README.bt848
View File

@ -1,13 +1,11 @@
-------------------------------------------------------------------------------
Recent versions of 3.0-current have the bktr driver built in.
Older versions of 3.0 and all versions of 2.2 need to have the driver
files installed by hand. If you find you have no /sys/pci/brooktree848.c
file in your source tree, you will need to do the following:
Recent versions of 3.0-current have the bktr driver built in. Older versions
of 3.0 and all versions of 2.2 need to have the driver files installed by hand:
cp ioctl_bt848.h /sys/i386/include/
cp brktree_reg.h brooktree848.c /sys/pci/
And in /sys/conf/files add:
In /sys/conf/files add:
pci/brooktree848.c optional bktr device-driver
-------------------------------------------------------------------------------
@ -24,14 +22,11 @@ driver.
Finally you need to create nodes for the driver:
Create a video device:
mknod /dev/bktr0 c 92 0
mknod /dev/bktr0 c 92 0
Create a tuner device:
mknod /dev/tuner0 c 92 16
Or, if your /dev/MAKEDEV script is up to date (and you can copy the latest
from /usr/src/etc/etc.i386/MAKEDEV) simply type: cd /dev && ./MAKEDEV bktr0
-------------------------------------------------------------------------------
The code attempts to auto-probe code to detect card/tuner types.
The detected card is printed in the dmesg as the driver is loaded. If
@ -60,6 +55,26 @@ which controls the video capture process thru the video device handle.
Certain ioctl()s such as video source are available thru both devices.
-------------------------------------------------------------------------------
If your tuner does not work properly or is not recognized properly
try setting the tuner type via or card type:
sysctl -w hw.bt848.card=<integer> current valid values are 0 to 5 inclusive
sysctl -w hw.bt848.tuner=<integer> where integer is a value from 1 to 10
systcl -w hw.bt848.reverse_mute=<1 | 0> to reverse the mute function in the
driver set variable to 1.
The exact format of the sysctl bt848 variable is:
unit << 8 | value
unit identifies the pci bt848 board to be affected 0 is the first bt848
board, 1 is the second bt848 board.
value denotes the integer value for tuners is a value from 0 to 10 for
reversing the mute function of the tuner the value is 1 or 0.
to find out all the bt848 variables:
sysctl hw.bt848
-------------------------------------------------------------------------------
The bt848 driver consists of:

12
sys/pci/brktree_reg.h
View File

@ -369,6 +369,7 @@ struct bktr_softc {
int alloc_pages; /* number of pages in bigbuf */
struct proc *proc; /* process to receive raised signal */
int signal; /* signal to send to process */
int clr_on_start; /* clear cap buf on capture start? */
#define METEOR_SIG_MODE_MASK 0xffff0000
#define METEOR_SIG_FIELD_MODE 0x00010000
#define METEOR_SIG_FRAME_MODE 0x00000000
@ -451,7 +452,18 @@ struct bktr_softc {
int yclip2;
int max_clip_node;
bktr_clip_t clip_list[100];
int reverse_mute;
int bt848_tuner;
int bt848_card;
};
typedef struct bktr_softc bktr_reg_t;
typedef struct bktr_softc* bktr_ptr_t;
#define Bt848_MAX_SIGN 16
struct bt848_card_sig {
int card;
int tuner;
u_char signature[Bt848_MAX_SIGN];
};

703
sys/pci/brooktree848.c
View File

@ -1,4 +1,4 @@
/* BT848 1.30 Driver for Brooktree's Bt848 based cards.
/* BT848 1.33 Driver for Brooktree's Bt848 based cards.
The Brooktree BT848 Driver driver is based upon Mark Tinguely and
Jim Lowe's driver for the Matrox Meteor PCI card . The
Philips SAA 7116 and SAA 7196 are very different chipsets than
@ -230,6 +230,23 @@
format change.
1.30 Bring back Frank Nobis <fn@Radio-do.de>'s opt_bktr.h
1.31 Randall Hopper <rhh@ct.picker.com>
submitted ioctl to clear the video buffer
prior to starting video capture
Amancio : clean up yuv12 so that it does not
affect rgb capture. Basically, fxtv after
capturing in yuv12 mode , switching to rgb
would cause the video capture to be too bright.
1.32 disable inverse gamma function for rgb and yuv
capture. fixed meteor brightness ioctl it now
converts the brightness value from unsigned to
signed.
1.33 added sysctl: hw.bt848.tuner, hw.bt848.reverse_mute,
hw.bt848.card
card takes a value from 0 to bt848_max_card
tuner takes a value from 0 to bt848_max_tuner
reverse_mute : 0 no effect, 1 reverse tuner
mute function some tuners are wired reversed :(
*/
#define DDB(x) x
@ -268,6 +285,16 @@
#include <machine/ioctl_meteor.h>
#include <machine/ioctl_bt848.h> /* extensions to ioctl_meteor.h */
#include <pci/brktree_reg.h>
#include <vm/vm.h>
#include <sys/sysctl.h>
static int bt848_card = -1;
static int bt848_tuner = -1;
static int bt848_reverse_mute = -1;
SYSCTL_NODE(_hw, OID_AUTO, bt848, CTLFLAG_RW, 0, "Bt848 Driver mgmt");
SYSCTL_INT(_hw_bt848, OID_AUTO, card, CTLFLAG_RW, &bt848_card, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, tuner, CTLFLAG_RW, &bt848_tuner, -1, "");
SYSCTL_INT(_hw_bt848, OID_AUTO, reverse_mute, CTLFLAG_RW, &bt848_reverse_mute, -1, "");
typedef int ioctl_cmd_t;
#endif /* __FreeBSD__ */
@ -298,7 +325,6 @@ typedef u_char bool_t;
static void bktr_intr __P((void *arg));
/*
* memory allocated for DMA programs
*/
@ -653,6 +679,268 @@ static struct {
/* the GPIO bits that control the audio MUXes */
#define GPIO_AUDIOMUX_BITS 0x0f
/*
* the data for each type of tuner
*
* if probeCard() fails to detect the proper tuner on boot you can
* override it by setting the following define to the tuner present:
*
#define OVERRIDE_TUNER <tuner type>
*
* where <tuner type> is one of the following tuner defines.
*/
/* indexes into tuners[] */
#define NO_TUNER 0
#define TEMIC_NTSC 1
#define TEMIC_PAL 2
#define TEMIC_SECAM 3
#define PHILIPS_NTSC 4
#define PHILIPS_PAL 5
#define PHILIPS_SECAM 6
#define TEMIC_PALI 7
#define PHILIPS_PALI 8
#define PHILIPS_FR1236_NTSC 9
#define PHILIPS_FR1216_PAL 10
#define Bt848_MAX_TUNER 11
/* XXX FIXME: this list is incomplete */
/* input types */
#define TTYPE_XXX 0
#define TTYPE_NTSC 1
#define TTYPE_NTSC_J 2
#define TTYPE_PAL 3
#define TTYPE_PAL_M 4
#define TTYPE_PAL_N 5
#define TTYPE_SECAM 6
/**
struct TUNER {
char* name;
u_char type;
u_char pllAddr;
u_char pllControl;
u_char bandLimits[ 2 ];
u_char bandAddrs[ 3 ];
};
*/
static const struct TUNER tuners[] = {
/* XXX FIXME: fill in the band-switch crosspoints */
/* NO_TUNER */
{ "<none>", /* the 'name' */
TTYPE_XXX, /* input type */
0x00, /* PLL write address */
{ 0x00, /* control byte for PLL */
0x00,
0x00,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
/* TEMIC_NTSC */
{ "Temic NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
TEMIC_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_PAL */
{ "Temic PAL", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_SECAM */
{ "Temic SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_NTSC */
{ "Philips NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
/* PHILIPS_SECAM */
{ "Philips SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
/* TEMIC_PAL I */
{ "Temic PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1236_NTSC */
{ "Philips FR1236 NTSC FM", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_FR1236_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00},
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1216_PAL */
{ "Philips FR1216 PAL FM", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_FR1216_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
};
/******************************************************************************
* card probe
*/
/*
* the recognized cards, used as indexes of several tables.
*
* if probeCard() fails to detect the proper card on boot you can
* override it by setting the following define to the card you are using:
*
#define OVERRIDE_CARD <card type>
*
* where <card type> is one of the following card defines.
*/
#define CARD_UNKNOWN 0
#define CARD_MIRO 1
#define CARD_HAUPPAUGE 2
#define CARD_STB 3
#define CARD_INTEL 4
#define CARD_IMS_TURBO 5
#define Bt848_MAX_CARD 6
/*
* 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 */
{ "Unknown", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* EEProm unknown */
{ 0, 0, 0, 0, 0 } },
/* CARD_MIRO */
{ "Miro TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* size unknown */
{ 0x02, 0x01, 0x00, 0x0a, 1 } }, /* XXX ??? */
/* CARD_HAUPPAUGE */
{ "Hauppauge WinCast/TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } }, /* audio MUX values */
/* CARD_STB */
{ "STB TV/PCI", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
X24C01_WADDR, /* EEProm type */
(u_char)(128 / EEPROMBLOCKSIZE), /* 128 bytes */
{ 0x00, 0x01, 0x02, 0x02, 1 } }, /* audio MUX values */
/* CARD_INTEL */
{ "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
NULL, /* the tuner */
0,
0,
0,
0,
{ 0, 0, 0, 0, 0 } },
/* CARD_IMS_TURBO */
{ "IMS TV Turbo", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } } /* audio MUX values */
};
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}}
};
/* debug utility for holding previous INT_STAT contents */
#define STATUS_SUM
@ -900,6 +1188,7 @@ bktr_attach( ATTACH_ARGS )
bt848->gpio_dma_ctl = FIFO_RISC_DISABLED;
}
bktr->clr_on_start = FALSE;
/* defaults for the tuner section of the card */
bktr->tflags = TUNER_INITALIZED;
bktr->tuner.frequency = 0;
@ -907,6 +1196,9 @@ bktr_attach( ATTACH_ARGS )
bktr->tuner.chnlset = DEFAULT_CHNLSET;
bktr->audio_mux_select = 0;
bktr->audio_mute_state = FALSE;
bktr->bt848_card = -1;
bktr->bt848_tuner = -1;
bktr->reverse_mute = -1;
probeCard( bktr, TRUE );
@ -969,9 +1261,9 @@ bktr_intr( void *arg )
status_sum |= (bktr_status & ~(BT848_INT_RSV0|BT848_INT_RSV1));
status_sum |= ((dstatus & (BT848_DSTATUS_COF|BT848_DSTATUS_LOF)) << 6);
#endif /* STATUS_SUM */
/* printf( " STATUS %x %x %x \n",
/* printf( " STATUS %x %x %x \n",
dstatus, bktr_status, bt848->risc_count );
*/
*/
/* if risc was disabled re-start process again */
if ( !(bktr_status & BT848_INT_RISC_EN) ||
((bktr_status &(BT848_INT_FBUS |
@ -1192,6 +1484,36 @@ bktr_open( dev_t dev, int flags, int fmt, struct proc *p )
if (!(bktr->flags & METEOR_INITALIZED)) /* device not found */
return( ENXIO );
if (bt848_card != -1) {
if ((bt848_card >> 8 == unit ) &&
( (bt848_card & 0xff) < Bt848_MAX_CARD )) {
if ( bktr->bt848_card != (bt848_card & 0xff) ) {
bktr->bt848_card = (bt848_card & 0xff);
probeCard(bktr, FALSE);
}
}
}
if (bt848_tuner != -1) {
if ((bt848_tuner >> 8 == unit ) &&
( (bt848_tuner & 0xff) < Bt848_MAX_TUNER )) {
if ( bktr->bt848_tuner != (bt848_tuner & 0xff) ) {
bktr->bt848_tuner = (bt848_tuner & 0xff);
probeCard(bktr, FALSE);
}
}
}
if (bt848_reverse_mute != -1) {
if (((bt848_reverse_mute >> 8) == unit ) &&
((bt848_reverse_mute & 0xff) < Bt848_MAX_TUNER) ) {
bktr->reverse_mute = bt848_reverse_mute & 0xff;
bt848_reverse_mute = -1;
}
}
switch ( MINOR( minor(dev) ) ) {
case VIDEO_DEV:
return( video_open( bktr ) );
@ -1223,10 +1545,11 @@ video_open( bktr_ptr_t bktr )
dump_bt848( bt848 );
#endif
bktr->clr_on_start = FALSE;
bt848->dstatus = 0x00; /* clear device status reg. */
bt848->adc = SYNC_LEVEL;
bt848->iform = BT848_IFORM_M_MUX1 |
BT848_IFORM_X_XT0 |
BT848_IFORM_F_NTSCM;
@ -1235,7 +1558,7 @@ video_open( bktr_ptr_t bktr )
bktr->max_clip_node = 0;
bt848->color_ctl_gamma = 0;
bt848->color_ctl_gamma = 1;
bt848->color_ctl_rgb_ded = 1;
bt848->color_ctl_color_bars = 0;
bt848->color_ctl_ext_frmrate = 0;
@ -1270,8 +1593,8 @@ video_open( bktr_ptr_t bktr )
bt848->int_mask = BT848_INT_MYSTERYBIT; /* what does this bit do ??? */
/* wait 2 seconds while bt848 initialises */
tsleep( (caddr_t)bktr, PZERO, "btinit", hz*2 );
/* wait .25 seconds while bt848 initialises */
tsleep( (caddr_t)bktr, PZERO, "btinit", hz/4 );
return( 0 );
}
@ -1502,7 +1825,8 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
vm_offset_t buf;
struct format_params *fp;
int i;
char char_temp;
bt848 = bktr->base;
switch ( cmd ) {
@ -1709,7 +2033,9 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
break;
case METEORSBRIG: /* set brightness */
bt848->bright = *(u_char *)arg & 0xff;
char_temp = ( *(u_char *)arg & 0xff) - 128;
bt848->bright = char_temp;
break;
case METEORGBRIG: /* get brightness */
@ -1759,6 +2085,14 @@ video_ioctl( bktr_ptr_t bktr, int unit, int cmd, caddr_t arg, struct proc* pr )
*(u_char *)arg = (u_char)((temp >> 1) & 0xff);
break;
case BT848SCBUF: /* set Clear-Buffer-on-start flag */
bktr->clr_on_start = (*(int *)arg != 0);
break;
case BT848GCBUF: /* get Clear-Buffer-on-start flag */
*(int *)arg = (int) bktr->clr_on_start;
break;
case METEORSSIGNAL:
if(*(int *)arg == 0 || *(int *)arg >= NSIG) {
return( EINVAL );
@ -2712,10 +3046,18 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
bt848->vbi_pack_size = 0;
bt848->vbi_pack_del = 0;
bt848->adc = SYNC_LEVEL;
bt848->color_ctl_rgb_ded = 1;
bt848->e_vscale_hi |= 0xc0;
bt848->o_vscale_hi |= 0xc0;
bt848->oform = 0x00;
bt848->e_vscale_hi |= 0x40; /* set chroma comb */
bt848->o_vscale_hi |= 0x40;
bt848->e_vscale_hi &= ~0x80; /* clear Ycomb */
bt848->o_vscale_hi &= ~0x80;
/* disable gamma correction removal */
bt848->color_ctl_gamma = 1;
if (cols > 385 ) {
bt848->e_vtc = 0;
bt848->o_vtc = 0;
@ -2778,7 +3120,7 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
switch (i_flag) {
case 1:
/* sync vre */
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRE;
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRO;
*dma_prog++ = 0; /* NULL WORD */
*dma_prog++ = OP_JUMP;
@ -2787,7 +3129,7 @@ rgb_prog( bktr_ptr_t bktr, char i_flag, int cols, int rows, int interlace )
case 2:
/* sync vro */
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRO;
*dma_prog++ = OP_SYNC | 1 << 24 | BKTR_VRE;
*dma_prog++ = 0; /* NULL WORD */
*dma_prog++ = OP_JUMP;
@ -3111,21 +3453,8 @@ yuv12_prog( bktr_ptr_t bktr, char i_flag,
bktr->capcontrol = 1 << 6 | 1 << 4 | 3;
bt848->adc = SYNC_LEVEL;
bt848->oform = 0x00;
bt848->oform = 0x0;
bt848->e_control |= BT848_E_CONTROL_LDEC; /* disable luma decimation */
bt848->o_control |= BT848_O_CONTROL_LDEC;
bt848->e_scloop |= BT848_O_SCLOOP_CAGC; /* chroma agc enable */
bt848->o_scloop |= BT848_O_SCLOOP_CAGC;
bt848->e_vscale_hi &= ~0x80; /* clear Ycomb */
bt848->o_vscale_hi &= ~0x80;
bt848->e_vscale_hi |= 0x40; /* set chroma comb */
bt848->o_vscale_hi |= 0x40;
/* disable gamma correction removal */
bt848->color_ctl_gamma = 1;
/* Construct Write */
inst = OP_WRITE123 | OP_SOL | OP_EOL | (cols);
@ -3372,6 +3701,13 @@ start_capture( bktr_ptr_t bktr, unsigned type )
fp = &format_params[bktr->format_params];
/* If requested, clear out capture buf first */
if (bktr->clr_on_start && (bktr->video.addr == 0)) {
bzero((caddr_t)bktr->bigbuf,
(size_t)bktr->rows * bktr->cols * bktr->frames *
pixfmt_table[ bktr->pixfmt ].public.Bpp);
}
bt848 = bktr->base;
bt848->dstatus = 0;
@ -3760,250 +4096,6 @@ readEEProm( bktr_ptr_t bktr, int offset, int count, u_char *data )
}
/******************************************************************************
* card probe
*/
/*
* the recognized cards, used as indexes of several tables.
*
* if probeCard() fails to detect the proper card on boot you can
* override it by setting the following define to the card you are using:
*
#define OVERRIDE_CARD <card type>
*
* where <card type> is one of the following card defines.
*/
#define CARD_UNKNOWN 0
#define CARD_MIRO 1
#define CARD_HAUPPAUGE 2
#define CARD_STB 3
#define CARD_INTEL 4
/*
* 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 */
{ "Unknown", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* EEProm unknown */
{ 0, 0, 0, 0, 0 } },
/* CARD_MIRO */
{ "Miro TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx unknown */
0,
0, /* EEProm unknown */
0, /* size unknown */
{ 0x02, 0x01, 0x00, 0x0a, 1 } }, /* XXX ??? */
/* CARD_HAUPPAUGE */
{ "Hauppauge WinCast/TV", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
PFC8582_WADDR, /* EEProm type */
(u_char)(256 / EEPROMBLOCKSIZE), /* 256 bytes */
{ 0x00, 0x02, 0x01, 0x01, 1 } }, /* audio MUX values */
/* CARD_STB */
{ "STB TV/PCI", /* the 'name' */
NULL, /* the tuner */
0, /* dbx is optional */
0,
X24C01_WADDR, /* EEProm type */
(u_char)(128 / EEPROMBLOCKSIZE), /* 128 bytes */
{ 0x00, 0x01, 0x02, 0x02, 1 } }, /* audio MUX values */
/* CARD_INTEL */
{ "Intel Smart Video III/VideoLogic Captivator PCI", /* the 'name' */
NULL, /* the tuner */
0,
0,
0,
0,
{ 0, 0, 0, 0, 0 } }
};
/*
* the data for each type of tuner
*
* if probeCard() fails to detect the proper tuner on boot you can
* override it by setting the following define to the tuner present:
*
#define OVERRIDE_TUNER <tuner type>
*
* where <tuner type> is one of the following tuner defines.
*/
/* indexes into tuners[] */
#define NO_TUNER 0
#define TEMIC_NTSC 1
#define TEMIC_PAL 2
#define TEMIC_SECAM 3
#define PHILIPS_NTSC 4
#define PHILIPS_PAL 5
#define PHILIPS_SECAM 6
#define TEMIC_PALI 7
#define PHILIPS_PALI 8
#define PHILIPS_FR1236_NTSC 9
#define PHILIPS_FR1216_PAL 10
/* XXX FIXME: this list is incomplete */
/* input types */
#define TTYPE_XXX 0
#define TTYPE_NTSC 1
#define TTYPE_NTSC_J 2
#define TTYPE_PAL 3
#define TTYPE_PAL_M 4
#define TTYPE_PAL_N 5
#define TTYPE_SECAM 6
/**
struct TUNER {
char* name;
u_char type;
u_char pllAddr;
u_char pllControl;
u_char bandLimits[ 2 ];
u_char bandAddrs[ 3 ];
};
*/
static const struct TUNER tuners[] = {
/* XXX FIXME: fill in the band-switch crosspoints */
/* NO_TUNER */
{ "<none>", /* the 'name' */
TTYPE_XXX, /* input type */
0x00, /* PLL write address */
{ 0x00, /* control byte for PLL */
0x00,
0x00,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x00, 0x00, 0x00,0x00} }, /* the band-switch values */
/* TEMIC_NTSC */
{ "Temic NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
TEMIC_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_PAL */
{ "Temic PAL", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01, 0x00 } }, /* the band-switch values */
/* TEMIC_SECAM */
{ "Temic SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_NTSC */
{ "Philips NTSC", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
/* PHILIPS_SECAM */
{ "Philips SECAM", /* the 'name' */
TTYPE_SECAM, /* input type */
0x00, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0xa4 } }, /* the band-switch values */
/* TEMIC_PAL I */
{ "Temic PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0x02, 0x04, 0x01,0x00 } }, /* the band-switch values */
/* PHILIPS_PAL */
{ "Philips PAL I", /* the 'name' */
TTYPE_PAL, /* input type */
TEMIC_PALI_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00 },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1236_NTSC */
{ "Philips FR1236 NTSC FM", /* the 'name' */
TTYPE_NTSC, /* input type */
PHILIPS_FR1236_NTSC_WADDR, /* PLL write address */
{ TSA552x_SCONTROL, /* control byte for PLL */
TSA552x_SCONTROL,
TSA552x_SCONTROL,
0x00},
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30,0x00 } }, /* the band-switch values */
/* PHILIPS_FR1216_PAL */
{ "Philips FR1216 PAL FM", /* the 'name' */
TTYPE_PAL, /* input type */
PHILIPS_FR1216_PAL_WADDR, /* PLL write address */
{ TSA552x_FCONTROL, /* control byte for PLL */
TSA552x_FCONTROL,
TSA552x_FCONTROL,
TSA552x_RADIO },
{ 0x00, 0x00 }, /* band-switch crosspoints */
{ 0xa0, 0x90, 0x30, 0xa4 } }, /* the band-switch values */
};
/*
@ -4022,7 +4114,7 @@ signCard( bktr_ptr_t bktr, int offset, int count, u_char* sig )
for ( x = 0; x < 16; ++x )
sig[ x ] = 0;
for ( x = 0; x < 128; ++x ) {
for ( x = 0; x < count; ++x ) {
if ( i2cRead( bktr, (2 * x) + 1 ) != ABSENT ) {
sig[ x / 8 ] |= (1 << (x % 8) );
}
@ -4068,12 +4160,14 @@ static int check_for_i2c_devices( bktr_ptr_t bktr ){
static void
probeCard( bktr_ptr_t bktr, int verbose )
{
int card;
int card, i,j, card_found;
int status;
bt848_ptr_t bt848;
int any_i2c_devices;
u_char probe_signature[128], *probe_temp;
int any_i2c_devices;
any_i2c_devices = check_for_i2c_devices( bktr );
any_i2c_devices = check_for_i2c_devices( bktr );
bt848 = bktr->base;
bt848->gpio_out_en = 0;
@ -4084,6 +4178,11 @@ probeCard( bktr_ptr_t bktr, int verbose )
bktr->card = cards[ (card = OVERRIDE_CARD) ];
goto checkTuner;
#endif
if (bktr->bt848_card != -1 ) {
bktr->card = cards[ (card = bktr->bt848_card) ];
goto checkTuner;
}
/* Check for i2c devices */
if (!any_i2c_devices) {
@ -4110,6 +4209,35 @@ probeCard( bktr_ptr_t bktr, int verbose )
goto checkTuner;
}
signCard( bktr, 1, 128, (u_char *) &probe_signature );
if (bootverbose) {
printf("card signature \n");
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];
bktr->card.tuner = &tuners[ bt848_card_signature[i].tuner];
goto checkDBX;
}
}
/* XXX FIXME: (how do I) look for a Miro card */
bktr->card = cards[ (card = CARD_MIRO) ];
@ -4118,6 +4246,10 @@ probeCard( bktr_ptr_t bktr, int verbose )
bktr->card.tuner = &tuners[ OVERRIDE_TUNER ];
goto checkDBX;
#endif
if (bktr->bt848_tuner != -1 ) {
bktr->card.tuner = &tuners[ bktr->bt848_tuner & 0xff ];
goto checkDBX;
}
/* Check for i2c devices */
if (!any_i2c_devices) {
@ -4761,6 +4893,12 @@ set_audio( bktr_ptr_t bktr, int cmd )
#else
bktr->audio_mux_select = 0;
#endif
if (bktr->reverse_mute )
bktr->audio_mux_select = 0;
else
bktr->audio_mux_select = 3;
break;
case AUDIO_EXTERN:
bktr->audio_mux_select = 1;
@ -4790,12 +4928,19 @@ set_audio( bktr_ptr_t bktr, int cmd )
/* XXX FIXME: this was an 8 bit reference before new struct ??? */
bt848->gpio_reg_inp = (~GPIO_AUDIOMUX_BITS & 0xff);
if ( bktr->audio_mute_state == TRUE )
if ( bktr->audio_mute_state == TRUE ) {
#ifdef BKTR_REVERSEMUTE
idx = 0;
#else
idx = 3;
#endif
if (bktr->reverse_mute )
idx = 3;
else
idx = 0;
}
else
idx = bktr->audio_mux_select;
@ -4803,7 +4948,7 @@ set_audio( bktr_ptr_t bktr, int cmd )
bt848->gpio_data =
#if defined( AUDIOMUX_DISCOVER )
bt848->gpio_data = temp | (cmd & 0xff);
printf("cmd: %d\n", cmd );
printf("cmd: %d audio mux %x temp %x \n", cmd,bktr->card.audiomuxs[ idx ], temp );
#else
temp | bktr->card.audiomuxs[ idx ];
#endif /* AUDIOMUX_DISCOVER */

5
sys/sys/ioctl_bt848.h
View File

@ -193,6 +193,11 @@ struct _bktr_clip {
#define BT848SFMT _IOW('x', 67, unsigned long )
#define BT848GFMT _IOR('x', 67, unsigned long )
/* set clear-buffer-on-start */
#define BT848SCBUF _IOW('x', 68, int)
#define BT848GCBUF _IOR('x', 68, int)
/* Read/Write the BT848's I2C bus directly
* b7-b0: data (read/write)
* b15-b8: internal peripheral register (write)