drivers/media/pci/bt8xx/bttvp.h - linux - Git at Google

 /*

     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 <kraxel@bytesex.org>

     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
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     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_DITHER       0x01
 #define FORMAT_FLAGS_PACKED       0x02
 #define FORMAT_FLAGS_PLANAR       0x04
 #define FORMAT_FLAGS_RAW          0x08
 #define FORMAT_FLAGS_CrCb         0x10

 #define RISC_SLOT_O_VBI        4
 #define RISC_SLOT_O_FIELD      6
 #define RISC_SLOT_E_VBI       10
 #define RISC_SLOT_E_FIELD     12
 #define RISC_SLOT_LOOP        14

 #define RESOURCE_OVERLAY       1
 #define RESOURCE_VIDEO_STREAM  2
 #define RESOURCE_VBI           4
 #define RESOURCE_VIDEO_READ    8

 #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    (\
 		V4L2_STD_PAL    | V4L2_STD_PAL_N | \
 		V4L2_STD_PAL_Nc | V4L2_STD_SECAM | \
 		V4L2_STD_NTSC   | V4L2_STD_PAL_M | \
 		V4L2_STD_PAL_60)
 /* ---------------------------------------------------------- */

 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].rect.top 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;
 }

 #endif

 #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_ */
	/*

	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 <kraxel@bytesex.org>

	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
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	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_DITHER 0x01
	#define FORMAT_FLAGS_PACKED 0x02
	#define FORMAT_FLAGS_PLANAR 0x04
	#define FORMAT_FLAGS_RAW 0x08
	#define FORMAT_FLAGS_CrCb 0x10

	#define RISC_SLOT_O_VBI 4
	#define RISC_SLOT_O_FIELD 6
	#define RISC_SLOT_E_VBI 10
	#define RISC_SLOT_E_FIELD 12
	#define RISC_SLOT_LOOP 14

	#define RESOURCE_OVERLAY 1
	#define RESOURCE_VIDEO_STREAM 2
	#define RESOURCE_VBI 4
	#define RESOURCE_VIDEO_READ 8

	#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 (\
	V4L2_STD_PAL \| V4L2_STD_PAL_N \| \
	V4L2_STD_PAL_Nc \| V4L2_STD_SECAM \| \
	V4L2_STD_NTSC \| V4L2_STD_PAL_M \| \
	V4L2_STD_PAL_60)
	/* ---------------------------------------------------------- */

	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].rect.top 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;
	}

	#endif

	#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_ */