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bttv - Bt848 frame grabber driver
bttv's *private* header file -- nobody other than bttv itself
should ever include this file.
(c) 2000-2002 Gerd Knorr <>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#ifndef _BTTVP_H_
#define _BTTVP_H_
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/pci.h>
#include <linux/input.h>
#include <linux/mutex.h>
#include <linux/scatterlist.h>
#include <linux/device.h>
#include <asm/io.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/videobuf-dma-sg.h>
#include <media/tveeprom.h>
#include <media/rc-core.h>
#include <media/i2c/ir-kbd-i2c.h>
#include <media/drv-intf/tea575x.h>
#include "bt848.h"
#include "bttv.h"
#include "btcx-risc.h"
#ifdef __KERNEL__
#define FORMAT_FLAGS_RAW 0x08
#define FORMAT_FLAGS_CrCb 0x10
#define RISC_SLOT_O_VBI 4
#define RISC_SLOT_E_VBI 10
#define RISC_SLOT_E_FIELD 12
#define RISC_SLOT_LOOP 14
#define RESOURCE_VBI 4
#define RAW_LINES 640
#define RAW_BPL 1024
#define UNSET (-1U)
/* Min. value in VDELAY register. */
#define MIN_VDELAY 2
/* Even to get Cb first, odd for Cr. */
#define MAX_HDELAY (0x3FF & -2)
/* Limits scaled width, which must be a multiple of 4. */
#define MAX_HACTIVE (0x3FF & -4)
#define BTTV_NORMS (\
/* ---------------------------------------------------------- */
struct bttv_tvnorm {
int v4l2_id;
char *name;
u32 Fsc;
u16 swidth, sheight; /* scaled standard width, height */
u16 totalwidth;
u8 adelay, bdelay, iform;
u32 scaledtwidth;
u16 hdelayx1, hactivex1;
u16 vdelay;
u8 vbipack;
u16 vtotal;
int sram;
/* ITU-R frame line number of the first VBI line we can
capture, of the first and second field. The last possible line
is determined by cropcap.bounds. */
u16 vbistart[2];
/* Horizontally this counts fCLKx1 samples following the leading
edge of the horizontal sync pulse, vertically ITU-R frame line
numbers of the first field times two (2, 4, 6, ... 524 or 624). */
struct v4l2_cropcap cropcap;
extern const struct bttv_tvnorm bttv_tvnorms[];
struct bttv_format {
char *name;
int fourcc; /* video4linux 2 */
int btformat; /* BT848_COLOR_FMT_* */
int btswap; /* BT848_COLOR_CTL_* */
int depth; /* bit/pixel */
int flags;
int hshift,vshift; /* for planar modes */
struct bttv_ir {
struct rc_dev *dev;
struct bttv *btv;
struct timer_list timer;
char name[32];
char phys[32];
/* Usual gpio signalling */
u32 mask_keycode;
u32 mask_keydown;
u32 mask_keyup;
u32 polling;
u32 last_gpio;
int shift_by;
int rc5_remote_gap;
/* RC5 gpio */
bool rc5_gpio; /* Is RC5 legacy GPIO enabled? */
u32 last_bit; /* last raw bit seen */
u32 code; /* raw code under construction */
ktime_t base_time; /* time of last seen code */
bool active; /* building raw code */
/* ---------------------------------------------------------- */
struct bttv_geometry {
u8 vtc,crop,comb;
u16 width,hscale,hdelay;
u16 sheight,vscale,vdelay,vtotal;
struct bttv_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
/* bttv specific */
const struct bttv_format *fmt;
unsigned int tvnorm;
int btformat;
int btswap;
struct bttv_geometry geo;
struct btcx_riscmem top;
struct btcx_riscmem bottom;
struct v4l2_rect crop;
unsigned int vbi_skip[2];
unsigned int vbi_count[2];
struct bttv_buffer_set {
struct bttv_buffer *top; /* top field buffer */
struct bttv_buffer *bottom; /* bottom field buffer */
unsigned int top_irq;
unsigned int frame_irq;
struct bttv_overlay {
unsigned int tvnorm;
struct v4l2_rect w;
enum v4l2_field field;
struct v4l2_clip *clips;
int nclips;
int setup_ok;
struct bttv_vbi_fmt {
struct v4l2_vbi_format fmt;
/* fmt.start[] and count[] refer to this video standard. */
const struct bttv_tvnorm *tvnorm;
/* Earliest possible start of video capturing with this
v4l2_vbi_format, in struct bttv_crop.rect units. */
__s32 end;
/* bttv-vbi.c */
void bttv_vbi_fmt_reset(struct bttv_vbi_fmt *f, unsigned int norm);
struct bttv_crop {
/* A cropping rectangle in struct bttv_tvnorm.cropcap units. */
struct v4l2_rect rect;
/* Scaled image size limits with this crop rect. Divide
max_height, but not min_height, by two when capturing
single fields. See also bttv_crop_reset() and
bttv_crop_adjust() in bttv-driver.c. */
__s32 min_scaled_width;
__s32 min_scaled_height;
__s32 max_scaled_width;
__s32 max_scaled_height;
struct bttv_fh {
/* This must be the first field in this struct */
struct v4l2_fh fh;
struct bttv *btv;
int resources;
enum v4l2_buf_type type;
/* video capture */
struct videobuf_queue cap;
const struct bttv_format *fmt;
int width;
int height;
/* video overlay */
const struct bttv_format *ovfmt;
struct bttv_overlay ov;
/* Application called VIDIOC_S_SELECTION. */
int do_crop;
/* vbi capture */
struct videobuf_queue vbi;
/* Current VBI capture window as seen through this fh (cannot
be global for compatibility with earlier drivers). Protected
by struct bttv.lock and struct bttv_fh.vbi.lock. */
struct bttv_vbi_fmt vbi_fmt;
/* ---------------------------------------------------------- */
/* bttv-risc.c */
/* risc code generators - capture */
int bttv_risc_packed(struct bttv *btv, struct btcx_riscmem *risc,
struct scatterlist *sglist,
unsigned int offset, unsigned int bpl,
unsigned int pitch, unsigned int skip_lines,
unsigned int store_lines);
/* control dma register + risc main loop */
void bttv_set_dma(struct bttv *btv, int override);
int bttv_risc_init_main(struct bttv *btv);
int bttv_risc_hook(struct bttv *btv, int slot, struct btcx_riscmem *risc,
int irqflags);
/* capture buffer handling */
int bttv_buffer_risc(struct bttv *btv, struct bttv_buffer *buf);
int bttv_buffer_activate_video(struct bttv *btv,
struct bttv_buffer_set *set);
int bttv_buffer_activate_vbi(struct bttv *btv,
struct bttv_buffer *vbi);
void bttv_dma_free(struct videobuf_queue *q, struct bttv *btv,
struct bttv_buffer *buf);
/* overlay handling */
int bttv_overlay_risc(struct bttv *btv, struct bttv_overlay *ov,
const struct bttv_format *fmt,
struct bttv_buffer *buf);
/* ---------------------------------------------------------- */
/* bttv-vbi.c */
int bttv_try_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
int bttv_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
int bttv_s_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f);
extern const struct videobuf_queue_ops bttv_vbi_qops;
/* ---------------------------------------------------------- */
/* bttv-gpio.c */
extern struct bus_type bttv_sub_bus_type;
int bttv_sub_add_device(struct bttv_core *core, char *name);
int bttv_sub_del_devices(struct bttv_core *core);
/* ---------------------------------------------------------- */
/* bttv-cards.c */
extern int no_overlay;
/* ---------------------------------------------------------- */
/* bttv-input.c */
extern void init_bttv_i2c_ir(struct bttv *btv);
/* ---------------------------------------------------------- */
/* bttv-i2c.c */
extern int init_bttv_i2c(struct bttv *btv);
extern int fini_bttv_i2c(struct bttv *btv);
/* ---------------------------------------------------------- */
/* bttv-driver.c */
/* insmod options */
extern unsigned int bttv_verbose;
extern unsigned int bttv_debug;
extern unsigned int bttv_gpio;
extern void bttv_gpio_tracking(struct bttv *btv, char *comment);
#define dprintk(fmt, ...) \
do { \
if (bttv_debug >= 1) \
pr_debug(fmt, ##__VA_ARGS__); \
} while (0)
#define dprintk_cont(fmt, ...) \
do { \
if (bttv_debug >= 1) \
pr_cont(fmt, ##__VA_ARGS__); \
} while (0)
#define d2printk(fmt, ...) \
do { \
if (bttv_debug >= 2) \
printk(fmt, ##__VA_ARGS__); \
} while (0)
#define BTTV_MAX_FBUF 0x208000
#define BTTV_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
#define BTTV_FREE_IDLE msecs_to_jiffies(1000) /* one second */
struct bttv_pll_info {
unsigned int pll_ifreq; /* PLL input frequency */
unsigned int pll_ofreq; /* PLL output frequency */
unsigned int pll_crystal; /* Crystal used for input */
unsigned int pll_current; /* Currently programmed ofreq */
/* for gpio-connected remote control */
struct bttv_input {
struct input_dev *dev;
char name[32];
char phys[32];
u32 mask_keycode;
u32 mask_keydown;
struct bttv_suspend_state {
u32 gpio_enable;
u32 gpio_data;
int disabled;
int loop_irq;
struct bttv_buffer_set video;
struct bttv_buffer *vbi;
struct bttv_tea575x_gpio {
u8 data, clk, wren, most;
struct bttv {
struct bttv_core c;
/* pci device config */
unsigned short id;
unsigned char revision;
unsigned char __iomem *bt848_mmio; /* pointer to mmio */
/* card configuration info */
unsigned int cardid; /* pci subsystem id (bt878 based ones) */
unsigned int tuner_type; /* tuner chip type */
unsigned int tda9887_conf;
unsigned int svhs, dig;
unsigned int has_saa6588:1;
struct bttv_pll_info pll;
int triton1;
int gpioirq;
int use_i2c_hw;
/* old gpio interface */
int shutdown;
void (*volume_gpio)(struct bttv *btv, __u16 volume);
void (*audio_mode_gpio)(struct bttv *btv, struct v4l2_tuner *tuner, int set);
/* new gpio interface */
spinlock_t gpio_lock;
/* i2c layer */
struct i2c_algo_bit_data i2c_algo;
struct i2c_client i2c_client;
int i2c_state, i2c_rc;
int i2c_done;
wait_queue_head_t i2c_queue;
struct v4l2_subdev *sd_msp34xx;
struct v4l2_subdev *sd_tvaudio;
struct v4l2_subdev *sd_tda7432;
/* video4linux (1) */
struct video_device video_dev;
struct video_device radio_dev;
struct video_device vbi_dev;
/* controls */
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl_handler radio_ctrl_handler;
/* infrared remote */
int has_remote;
struct bttv_ir *remote;
/* I2C remote data */
struct IR_i2c_init_data init_data;
/* locking */
spinlock_t s_lock;
struct mutex lock;
int resources;
/* video state */
unsigned int input;
unsigned int audio_input;
unsigned int mute;
unsigned long tv_freq;
unsigned int tvnorm;
v4l2_std_id std;
int hue, contrast, bright, saturation;
struct v4l2_framebuffer fbuf;
unsigned int field_count;
/* various options */
int opt_combfilter;
int opt_automute;
int opt_vcr_hack;
int opt_uv_ratio;
/* radio data/state */
int has_radio;
int has_radio_tuner;
int radio_user;
int radio_uses_msp_demodulator;
unsigned long radio_freq;
/* miro/pinnacle + Aimslab VHX
philips matchbox (tea5757 radio tuner) support */
int has_tea575x;
struct bttv_tea575x_gpio tea_gpio;
struct snd_tea575x tea;
/* ISA stuff (Terratec Active Radio Upgrade) */
int mbox_ior;
int mbox_iow;
int mbox_csel;
/* switch status for multi-controller cards */
char sw_status[4];
/* risc memory management data
- must acquire s_lock before changing these
- only the irq handler is supported to touch top + bottom + vcurr */
struct btcx_riscmem main;
struct bttv_buffer *screen; /* overlay */
struct list_head capture; /* video capture queue */
struct list_head vcapture; /* vbi capture queue */
struct bttv_buffer_set curr; /* active buffers */
struct bttv_buffer *cvbi; /* active vbi buffer */
int loop_irq;
int new_input;
unsigned long cap_ctl;
unsigned long dma_on;
struct timer_list timeout;
struct bttv_suspend_state state;
/* stats */
unsigned int errors;
unsigned int framedrop;
unsigned int irq_total;
unsigned int irq_me;
unsigned int users;
struct bttv_fh init;
/* used to make dvb-bt8xx autoloadable */
struct work_struct request_module_wk;
/* Default (0) and current (1) video capturing and overlay
cropping parameters in bttv_tvnorm.cropcap units. Protected
by bttv.lock. */
struct bttv_crop crop[2];
/* Earliest possible start of video capturing in
bttv_tvnorm.cropcap line units. Set by check_alloc_btres()
and free_btres(). Protected by bttv.lock. */
__s32 vbi_end;
/* Latest possible end of VBI capturing (= crop[x] when
VIDEO_RESOURCES are locked). Set by check_alloc_btres()
and free_btres(). Protected by bttv.lock. */
__s32 crop_start;
static inline struct bttv *to_bttv(struct v4l2_device *v4l2_dev)
return container_of(v4l2_dev, struct bttv, c.v4l2_dev);
/* our devices */
#define BTTV_MAX 32
extern unsigned int bttv_num;
extern struct bttv *bttvs[BTTV_MAX];
static inline unsigned int bttv_muxsel(const struct bttv *btv,
unsigned int input)
return (bttv_tvcards[btv->c.type].muxsel >> (input * 2)) & 3;
#define btwrite(dat,adr) writel((dat), btv->bt848_mmio+(adr))
#define btread(adr) readl(btv->bt848_mmio+(adr))
#define btand(dat,adr) btwrite((dat) & btread(adr), adr)
#define btor(dat,adr) btwrite((dat) | btread(adr), adr)
#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)
#endif /* _BTTVP_H_ */