freebsd-skq/sys/pci/brktree_reg.h

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/*
* Copyright (c) 1995 Mark Tinguely and Jim Lowe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Tinguely and Jim Lowe
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PCI_LATENCY_TIMER
#define PCI_LATENCY_TIMER 0x0c /* pci timer register */
#endif
/*
* Definitions for the Philips SAA7116 digital video to pci interface.
*/
#define BROOKTREE_848_ID 0x0350109E
#define BROOKTREE_849_ID 0x0351109E
#define BROOKTREE_878_ID 0x036E109E
#define BROOKTREE_879_ID 0x036F109E
typedef volatile u_int bregister_t;
/*
* if other persuasion endian, then compiler will probably require that
* these next
* macros be reversed
*/
#define BTBYTE(what) bregister_t what:8; int :24
#define BTWORD(what) bregister_t what:16; int: 16
#define BTLONG(what) bregister_t what:32
struct bt848_registers {
BTBYTE (dstatus); /* 0, 1,2,3 */
#define BT848_DSTATUS_PRES (1<<7)
#define BT848_DSTATUS_HLOC (1<<6)
#define BT848_DSTATUS_FIELD (1<<5)
#define BT848_DSTATUS_NUML (1<<4)
#define BT848_DSTATUS_CSEL (1<<3)
#define BT848_DSTATUS_PLOCK (1<<2)
#define BT848_DSTATUS_LOF (1<<1)
#define BT848_DSTATUS_COF (1<<0)
BTBYTE (iform); /* 4, 5,6,7 */
#define BT848_IFORM_MUXSEL (0x3<<5)
# define BT848_IFORM_M_MUX1 (0x03<<5)
# define BT848_IFORM_M_MUX0 (0x02<<5)
# define BT848_IFORM_M_MUX2 (0x01<<5)
# define BT848_IFORM_M_MUX3 (0x0)
# define BT848_IFORM_M_RSVD (0x00<<5)
#define BT848_IFORM_XTSEL (0x3<<3)
# define BT848_IFORM_X_AUTO (0x03<<3)
# define BT848_IFORM_X_XT1 (0x02<<3)
# define BT848_IFORM_X_XT0 (0x01<<3)
# define BT848_IFORM_X_RSVD (0x00<<3)
BTBYTE (tdec); /* 8, 9,a,b */
BTBYTE (e_crop); /* c, d,e,f */
BTBYTE (e_vdelay_lo); /* 10, 11,12,13 */
BTBYTE (e_vactive_lo); /* 14, 15,16,17 */
BTBYTE (e_delay_lo); /* 18, 19,1a,1b */
BTBYTE (e_hactive_lo); /* 1c, 1d,1e,1f */
BTBYTE (e_hscale_hi); /* 20, 21,22,23 */
BTBYTE (e_hscale_lo); /* 24, 25,26,27 */
BTBYTE (bright); /* 28, 29,2a,2b */
BTBYTE (e_control); /* 2c, 2d,2e,2f */
#define BT848_E_CONTROL_LNOTCH (1<<7)
#define BT848_E_CONTROL_COMP (1<<6)
#define BT848_E_CONTROL_LDEC (1<<5)
#define BT848_E_CONTROL_CBSENSE (1<<4)
#define BT848_E_CONTROL_RSVD (1<<3)
#define BT848_E_CONTROL_CON_MSB (1<<2)
#define BT848_E_CONTROL_SAT_U_MSB (1<<1)
#define BT848_E_CONTROL_SAT_V_MSB (1<<0)
BTBYTE (contrast_lo); /* 30, 31,32,33 */
BTBYTE (sat_u_lo); /* 34, 35,36,37 */
BTBYTE (sat_v_lo); /* 38, 39,3a,3b */
BTBYTE (hue); /* 3c, 3d,3e,3f */
BTBYTE (e_scloop); /* 40, 41,42,43 */
#define BT848_E_SCLOOP_RSVD1 (1<<7)
#define BT848_E_SCLOOP_CAGC (1<<6)
#define BT848_E_SCLOOP_CKILL (1<<5)
#define BT848_E_SCLOOP_HFILT (0x3<<3)
# define BT848_E_SCLOOP_HFILT_ICON (0x3<<3)
# define BT848_E_SCLOOP_HFILT_QCIF (0x2<<3)
# define BT848_E_SCLOOP_HFILT_CIF (0x1<<3)
# define BT848_E_SCLOOP_HFILT_AUTO (0x0<<3)
#define BT848_E_SCLOOP_RSVD0 (0x7<<0)
int :32; /* 44, 45,46,47 */
BTBYTE (oform); /* 48, 49,4a,4b */
BTBYTE (e_vscale_hi); /* 4c, 4d,4e,4f */
BTBYTE (e_vscale_lo); /* 50, 51,52,53 */
BTBYTE (test); /* 54, 55,56,57 */
int :32; /* 58, 59,5a,5b */
int :32; /* 5c, 5d,5e,5f */
BTLONG (adelay); /* 60, 61,62,63 */
BTBYTE (bdelay); /* 64, 65,66,67 */
BTBYTE (adc); /* 68, 69,6a,6b */
#define BT848_ADC_RESERVED (0x80) /* required pattern */
#define BT848_ADC_SYNC_T (1<<5)
#define BT848_ADC_AGC_EN (1<<4)
#define BT848_ADC_CLK_SLEEP (1<<3)
#define BT848_ADC_Y_SLEEP (1<<2)
#define BT848_ADC_C_SLEEP (1<<1)
#define BT848_ADC_CRUSH (1<<0)
BTBYTE (e_vtc); /* 6c, 6d,6e,6f */
int :32; /* 70, 71,72,73 */
int :32; /* 74, 75,76,77 */
int :32; /* 78, 79,7a,7b */
BTLONG (sreset); /* 7c, 7d,7e,7f */
u_char filler1[0x84-0x80];
BTBYTE (tgctrl); /* 84, 85,86,87 */
#define BT848_TGCTRL_TGCKI (3<<3)
#define BT848_TGCTRL_TGCKI_XTAL (0<<3)
#define BT848_TGCTRL_TGCKI_PLL (1<<3)
#define BT848_TGCTRL_TGCKI_GPCLK (2<<3)
#define BT848_TGCTRL_TGCKI_GPCLK_I (3<<3)
u_char filler[0x8c-0x88];
BTBYTE (o_crop); /* 8c, 8d,8e,8f */
BTBYTE (o_vdelay_lo); /* 90, 91,92,93 */
BTBYTE (o_vactive_lo); /* 94, 95,96,97 */
BTBYTE (o_delay_lo); /* 98, 99,9a,9b */
BTBYTE (o_hactive_lo); /* 9c, 9d,9e,9f */
BTBYTE (o_hscale_hi); /* a0, a1,a2,a3 */
BTBYTE (o_hscale_lo); /* a4, a5,a6,a7 */
int :32; /* a8, a9,aa,ab */
BTBYTE (o_control); /* ac, ad,ae,af */
#define BT848_O_CONTROL_LNOTCH (1<<7)
#define BT848_O_CONTROL_COMP (1<<6)
#define BT848_O_CONTROL_LDEC (1<<5)
#define BT848_O_CONTROL_CBSENSE (1<<4)
#define BT848_O_CONTROL_RSVD (1<<3)
#define BT848_O_CONTROL_CON_MSB (1<<2)
#define BT848_O_CONTROL_SAT_U_MSB (1<<1)
#define BT848_O_CONTROL_SAT_V_MSB (1<<0)
u_char fillter1[16];
BTBYTE (o_scloop); /* c0, c1,c2,c3 */
#define BT848_O_SCLOOP_RSVD1 (1<<7)
#define BT848_O_SCLOOP_CAGC (1<<6)
#define BT848_O_SCLOOP_CKILL (1<<5)
#define BT848_O_SCLOOP_HFILT (0x3<<3)
#define BT848_O_SCLOOP_HFILT_ICON (0x3<<3)
#define BT848_O_SCLOOP_HFILT_QCIF (0x2<<3)
#define BT848_O_SCLOOP_HFILT_CIF (0x1<<3)
#define BT848_O_SCLOOP_HFILT_AUTO (0x0<<3)
#define BT848_O_SCLOOP_RSVD0 (0x7<<0)
int :32; /* c4, c5,c6,c7 */
int :32; /* c8, c9,ca,cb */
BTBYTE (o_vscale_hi); /* cc, cd,ce,cf */
BTBYTE (o_vscale_lo); /* d0, d1,d2,d3 */
BTBYTE (color_fmt); /* d4, d5,d6,d7 */
bregister_t color_ctl_swap :4; /* d8 */
#define BT848_COLOR_CTL_WSWAP_ODD (1<<3)
#define BT848_COLOR_CTL_WSWAP_EVEN (1<<2)
#define BT848_COLOR_CTL_BSWAP_ODD (1<<1)
#define BT848_COLOR_CTL_BSWAP_EVEN (1<<0)
bregister_t color_ctl_gamma :1;
bregister_t color_ctl_rgb_ded :1;
bregister_t color_ctl_color_bars :1;
bregister_t color_ctl_ext_frmrate :1;
int :24; /* d9,da,db */
BTBYTE (cap_ctl); /* dc, dd,de,df */
#define BT848_CAP_CTL_DITH_FRAME (1<<4)
#define BT848_CAP_CTL_VBI_ODD (1<<3)
#define BT848_CAP_CTL_VBI_EVEN (1<<2)
#define BT848_CAP_CTL_ODD (1<<1)
#define BT848_CAP_CTL_EVEN (1<<0)
BTBYTE (vbi_pack_size); /* e0, e1,e2,e3 */
BTBYTE (vbi_pack_del); /* e4, e5,e6,e7 */
int :32; /* e8, e9,ea,eb */
BTBYTE (o_vtc); /* ec, ed,ee,ef */
BTBYTE (pll_f_lo); /* f0, f1,f2,f3 */
BTBYTE (pll_f_hi); /* f4, f5,f6,f7 */
BTBYTE (pll_f_xci); /* f8, f9,fa,fb */
#define BT848_PLL_F_C (1<<6)
#define BT848_PLL_F_X (1<<7)
u_char filler2[0x100-0xfc];
BTLONG (int_stat); /* 100, 101,102,103 */
BTLONG (int_mask); /* 104, 105,106,107 */
#define BT848_INT_RISCS (0xf<<28)
#define BT848_INT_RISC_EN (1<<27)
#define BT848_INT_RACK (1<<25)
#define BT848_INT_FIELD (1<<24)
#define BT848_INT_MYSTERYBIT (1<<23)
#define BT848_INT_SCERR (1<<19)
#define BT848_INT_OCERR (1<<18)
#define BT848_INT_PABORT (1<<17)
#define BT848_INT_RIPERR (1<<16)
#define BT848_INT_PPERR (1<<15)
#define BT848_INT_FDSR (1<<14)
#define BT848_INT_FTRGT (1<<13)
#define BT848_INT_FBUS (1<<12)
#define BT848_INT_RISCI (1<<11)
#define BT848_INT_GPINT (1<<9)
#define BT848_INT_I2CDONE (1<<8)
#define BT848_INT_RSV1 (1<<7)
#define BT848_INT_RSV0 (1<<6)
#define BT848_INT_VPRES (1<<5)
#define BT848_INT_HLOCK (1<<4)
#define BT848_INT_OFLOW (1<<3)
#define BT848_INT_HSYNC (1<<2)
#define BT848_INT_VSYNC (1<<1)
#define BT848_INT_FMTCHG (1<<0)
int :32; /* 108, 109,10a,10b */
BTWORD (gpio_dma_ctl); /* 10c, 10d,10e,10f */
#define BT848_DMA_CTL_PL23TP4 (0<<6) /* planar1 trigger 4 */
#define BT848_DMA_CTL_PL23TP8 (1<<6) /* planar1 trigger 8 */
#define BT848_DMA_CTL_PL23TP16 (2<<6) /* planar1 trigger 16 */
#define BT848_DMA_CTL_PL23TP32 (3<<6) /* planar1 trigger 32 */
#define BT848_DMA_CTL_PL1TP4 (0<<4) /* planar1 trigger 4 */
#define BT848_DMA_CTL_PL1TP8 (1<<4) /* planar1 trigger 8 */
#define BT848_DMA_CTL_PL1TP16 (2<<4) /* planar1 trigger 16 */
#define BT848_DMA_CTL_PL1TP32 (3<<4) /* planar1 trigger 32 */
#define BT848_DMA_CTL_PKTP4 (0<<2) /* packed trigger 4 */
#define BT848_DMA_CTL_PKTP8 (1<<2) /* packed trigger 8 */
#define BT848_DMA_CTL_PKTP16 (2<<2) /* packed trigger 16 */
#define BT848_DMA_CTL_PKTP32 (3<<2) /* packed trigger 32 */
#define BT848_DMA_CTL_RISC_EN (1<<1)
#define BT848_DMA_CTL_FIFO_EN (1<<0)
BTLONG (i2c_data_ctl); /* 110, 111,112,113 */
#define BT848_DATA_CTL_I2CDIV (0xf<<4)
#define BT848_DATA_CTL_I2CSYNC (1<<3)
#define BT848_DATA_CTL_I2CW3B (1<<2)
#define BT848_DATA_CTL_I2CSCL (1<<1)
#define BT848_DATA_CTL_I2CSDA (1<<0)
BTLONG (risc_strt_add); /* 114, 115,116,117 */
BTLONG (gpio_out_en); /* 118, 119,11a,11b */ /* really 24 bits */
BTLONG (gpio_reg_inp); /* 11c, 11d,11e,11f */ /* really 24 bits */
BTLONG (risc_count); /* 120, 121,122,123 */
u_char filler3[0x200-0x124];
BTLONG (gpio_data); /* 200, 201,202,203 */ /* really 24 bits */
};
typedef volatile struct bt848_registers* bt848_ptr_t;
#if 0
/* force people to be aware of the new struct */
#define BKTR_DSTATUS 0x000
#define BKTR_IFORM 0x004
#define BKTR_TDEC 0x008
#define BKTR_EVEN_CROP 0x00C
#define BKTR_ODD_CROP 0x08C
#define BKTR_E_VDELAY_LO 0x010
#define BKTR_O_VDELAY_LO 0x090
#define BKTR_E_VACTIVE_LO 0x014
#define BKTR_O_VACTIVE_LO 0x094
#define BKTR_E_DELAY_LO 0x018
#define BKTR_O_DELAY_LO 0x098
#define BKTR_E_HACTIVE_LO 0x01C
#define BKTR_O_HACTIVE_LO 0x09C
#define BKTR_E_HSCALE_HI 0x020
#define BKTR_O_HSCALE_HI 0x0A0
#define BKTR_E_HSCALE_LO 0x024
#define BKTR_O_HSCALE_LO 0x0A4
#define BKTR_BRIGHT 0x028
#define BKTR_E_CONTROL 0x02C
#define BKTR_O_CONTROL 0x0AC
#define BKTR_CONTRAST_LO 0x030
#define BKTR_SAT_U_LO 0x034
#define BKTR_SAT_V_LO 0x038
#define BKTR_HUE 0x03C
#define BKTR_E_SCLOOP 0x040
#define BKTR_O_SCLOOP 0x0C0
#define BKTR_OFORM 0x048
#define BKTR_E_VSCALE_HI 0x04C
#define BKTR_O_VSCALE_HI 0x0CC
#define BKTR_E_VSCALE_LO 0x050
#define BKTR_O_VSCALE_LO 0x0D0
#define BKTR_TEST 0x054
#define BKTR_ADELAY 0x060
#define BKTR_BDELAY 0x064
#define BKTR_ADC 0x068
#define BKTR_E_VTC 0x06C
#define BKTR_O_VTC 0x0EC
#define BKTR_SRESET 0x07C
#define BKTR_COLOR_FMT 0x0D4
#define BKTR_COLOR_CTL 0x0D8
#define BKTR_CAP_CTL 0x0DC
#define BKTR_VBI_PACK_SIZE 0x0E0
#define BKTR_VBI_PACK_DEL 0x0E4
#define BKTR_INT_STAT 0x100
#define BKTR_INT_MASK 0x104
#define BKTR_RISC_COUNT 0x120
#define BKTR_RISC_STRT_ADD 0x114
#define BKTR_GPIO_DMA_CTL 0x10C
#define BKTR_GPIO_OUT_EN 0x118
#define BKTR_GPIO_REG_INP 0x11C
#define BKTR_GPIO_DATA 0x200
#define BKTR_I2C_CONTROL 0x110
#endif /* 0 */
/*
* device support for onboard tv tuners
*/
/* description of the LOGICAL tuner */
struct TVTUNER {
int frequency;
u_char chnlset;
u_char channel;
u_char band;
u_char afc;
u_char radio_mode; /* current mode of the radio mode */
};
/* description of the PHYSICAL tuner */
struct TUNER {
char* name;
u_char type;
u_char pllAddr;
u_char pllControl[4];
u_char bandLimits[ 2 ];
u_char bandAddrs[ 4 ]; /* 3 first for the 3 TV
** bands. Last for radio
** band (0x00=NoRadio).
*/
};
/* description of the card */
#define EEPROMBLOCKSIZE 32
struct CARDTYPE {
char* name;
const struct TUNER* tuner;
u_char dbx; /* Has DBX chip? */
u_char msp3400c; /* Has msp3400c chip? */
u_char eepromAddr;
u_char eepromSize; /* bytes / EEPROMBLOCKSIZE */
u_char audiomuxs[ 5 ]; /* tuner, ext, int/unused,
mute, present */
};
struct format_params {
/* Total lines, lines before image, image lines */
int vtotal, vdelay, vactive;
/* Total unscaled horizontal pixels, pixels before image, image pixels */
int htotal, hdelay, hactive;
/* Scaled horizontal image pixels, Total Scaled horizontal pixels */
int scaled_hactive, scaled_htotal;
/* frame rate . for ntsc is 30 frames per second */
int frame_rate;
/* A-delay and B-delay */
u_char adelay, bdelay;
/* Iform XTSEL value */
int iform_xtsel;
};
typedef struct bktr_clip bktr_clip_t;
/*
* BrookTree 848 info structure, one per bt848 card installed.
*/
struct bktr_softc {
#ifdef __bsdi__
struct device bktr_dev; /* base device */
struct isadev bktr_id; /* ISA device */
struct intrhand bktr_ih; /* interrupt vectoring */
#define pcici_t pci_devaddr_t
#endif
bt848_ptr_t base; /* Bt848 register physical address */
vm_offset_t phys_base; /* Bt848 register physical address */
pcici_t tag; /* PCI tag, for doing PCI commands */
vm_offset_t bigbuf; /* buffer that holds the captured image */
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
vm_offset_t dma_prog;
vm_offset_t odd_dma_prog;
char dma_prog_loaded;
struct meteor_mem *mem; /* used to control sync. multi-frame output */
u_long synch_wait; /* wait for free buffer before continuing */
short current; /* frame number in buffer (1-frames) */
short rows; /* number of rows in a frame */
short cols; /* number of columns in a frame */
int capture_area_x_offset; /* Usually the full 640x480(NTSC) image is */
int capture_area_y_offset; /* captured. The capture area allows for */
int capture_area_x_size; /* example 320x200 pixels from the centre */
int capture_area_y_size; /* of the video image to be captured. */
char capture_area_enabled; /* When TRUE use user's capture area. */
int pixfmt; /* active pixel format (idx into fmt tbl) */
int pixfmt_compat; /* Y/N - in meteor pix fmt compat mode */
u_long format; /* frame format rgb, yuv, etc.. */
short frames; /* number of frames allocated */
int frame_size; /* number of bytes in a frame */
u_long fifo_errors; /* number of fifo capture errors since open */
u_long dma_errors; /* number of DMA capture errors since open */
u_long frames_captured;/* number of frames captured since open */
u_long even_fields_captured; /* number of even fields captured */
u_long odd_fields_captured; /* number of odd fields captured */
u_long range_enable; /* enable range checking ?? */
u_short capcontrol; /* reg 0xdc capture control */
u_short bktr_cap_ctl;
volatile u_int flags;
#define METEOR_INITALIZED 0x00000001
#define METEOR_OPEN 0x00000002
#define METEOR_MMAP 0x00000004
#define METEOR_INTR 0x00000008
#define METEOR_READ 0x00000010 /* XXX never gets referenced */
#define METEOR_SINGLE 0x00000020 /* get single frame */
#define METEOR_CONTIN 0x00000040 /* continuously get frames */
#define METEOR_SYNCAP 0x00000080 /* synchronously get frames */
#define METEOR_CAP_MASK 0x000000f0
#define METEOR_NTSC 0x00000100
#define METEOR_PAL 0x00000200
#define METEOR_SECAM 0x00000400
#define METEOR_AUTOMODE 0x00000800
#define METEOR_FORM_MASK 0x00000f00
#define METEOR_DEV0 0x00001000
#define METEOR_DEV1 0x00002000
#define METEOR_DEV2 0x00004000
#define METEOR_DEV3 0x00008000
#define METEOR_DEV_SVIDEO 0x00006000
#define METEOR_DEV_RGB 0x0000a000
#define METEOR_DEV_MASK 0x0000f000
#define METEOR_RGB16 0x00010000
#define METEOR_RGB24 0x00020000
#define METEOR_YUV_PACKED 0x00040000
#define METEOR_YUV_PLANAR 0x00080000
#define METEOR_WANT_EVEN 0x00100000 /* want even frame */
#define METEOR_WANT_ODD 0x00200000 /* want odd frame */
#define METEOR_WANT_MASK 0x00300000
#define METEOR_ONLY_EVEN_FIELDS 0x01000000
#define METEOR_ONLY_ODD_FIELDS 0x02000000
#define METEOR_ONLY_FIELDS_MASK 0x03000000
#define METEOR_YUV_422 0x04000000
#define METEOR_OUTPUT_FMT_MASK 0x040f0000
#define METEOR_WANT_TS 0x08000000 /* time-stamp a frame */
#define METEOR_RGB 0x20000000 /* meteor rgb unit */
#define METEOR_FIELD_MODE 0x80000000
u_char tflags;
#define TUNER_INITALIZED 0x00000001
#define TUNER_OPEN 0x00000002
u_short fps; /* frames per second */
struct meteor_video video;
struct TVTUNER tuner;
struct CARDTYPE card;
u_char audio_mux_select; /* current mode of the audio */
u_char audio_mute_state; /* mute state of the audio */
u_char format_params;
u_long current_sol;
u_long current_col;
int clip_start;
int line_length;
int last_y;
int y;
int y2;
int yclip;
int yclip2;
int max_clip_node;
bktr_clip_t clip_list[100];
int reverse_mute;
int bt848_tuner;
int bt848_card;
u_long id;
};
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];
};