patch-2.2.12 linux/drivers/char/buz.h

• Lines: 320
• Date: Wed Aug 25 17:29:47 1999
• Orig file: v2.2.11/linux/drivers/char/buz.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.2.11/linux/drivers/char/buz.h linux/drivers/char/buz.h
@@ -0,0 +1,319 @@
+/* 
+   buz - Iomega Buz driver
+
+   Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
+
+   based on
+
+   buz.0.0.3 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
+
+   and
+
+   bttv - Bt848 frame grabber driver
+   Copyright (C) 1996,97 Ralph Metzler (rjkm@thp.uni-koeln.de)
+
+   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 _BUZ_H_
+#define _BUZ_H_
+
+/* The Buz only supports a maximum width of 720, but some V4L
+   applications (e.g. xawtv are more happy with 768).
+   If XAWTV_HACK is defined, we try to fake a device with bigger width */
+
+#define XAWTV_HACK
+
+#ifdef XAWTV_HACK
+#define   BUZ_MAX_WIDTH   768	/* never display more than 768 pixels */
+#else
+#define   BUZ_MAX_WIDTH   720	/* never display more than 720 pixels */
+#endif
+#define   BUZ_MAX_HEIGHT  576	/* never display more than 576 rows */
+#define   BUZ_MIN_WIDTH    32	/* never display less than 32 pixels */
+#define   BUZ_MIN_HEIGHT   24	/* never display less than 24 rows */
+
+struct zoran_requestbuffers {
+	unsigned long count;	/* Number of buffers for MJPEG grabbing */
+	unsigned long size;	/* Size PER BUFFER in bytes */
+};
+
+struct zoran_sync {
+	unsigned long frame;	/* number of buffer that has been free'd */
+	unsigned long length;	/* number of code bytes in buffer (capture only) */
+	unsigned long seq;	/* frame sequence number */
+	struct timeval timestamp;	/* timestamp */
+};
+
+struct zoran_status {
+	int input;		/* Input channel, has to be set prior to BUZIOC_G_STATUS */
+	int signal;		/* Returned: 1 if valid video signal detected */
+	int norm;		/* Returned: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
+	int color;		/* Returned: 1 if color signal detected */
+};
+
+struct zoran_params {
+
+	/* The following parameters can only be queried */
+
+	int major_version;	/* Major version number of driver */
+	int minor_version;	/* Minor version number of driver */
+
+	/* Main control parameters */
+
+	int input;		/* Input channel: 0 = Composite, 1 = S-VHS */
+	int norm;		/* Norm: VIDEO_MODE_PAL or VIDEO_MODE_NTSC */
+	int decimation;		/* decimation of captured video,
+				   enlargement of video played back.
+				   Valid values are 1, 2, 4 or 0.
+				   0 is a special value where the user
+				   has full control over video scaling */
+
+	/* The following parameters only have to be set if decimation==0,
+	   for other values of decimation they provide the data how the image is captured */
+
+	int HorDcm;		/* Horizontal decimation: 1, 2 or 4 */
+	int VerDcm;		/* Vertical decimation: 1 or 2 */
+	int TmpDcm;		/* Temporal decimation: 1 or 2,
+				   if TmpDcm==2 in capture every second frame is dropped,
+				   in playback every frame is played twice */
+	int field_per_buff;	/* Number of fields per buffer: 1 or 2 */
+	int img_x;		/* start of image in x direction */
+	int img_y;		/* start of image in y direction */
+	int img_width;		/* image width BEFORE decimation,
+				   must be a multiple of HorDcm*16 */
+	int img_height;		/* image height BEFORE decimation,
+				   must be a multiple of VerDcm*8 */
+
+	/* --- End of parameters for decimation==0 only --- */
+
+	/* JPEG control parameters */
+
+	int quality;		/* Measure for quality of compressed images.
+				   Scales linearly with the size of the compressed images.
+				   Must be beetween 0 and 100, 100 is a compression
+				   ratio of 1:4 */
+
+	int odd_even;		/* Which field should come first ??? */
+
+	int APPn;		/* Number of APP segment to be written, must be 0..15 */
+	int APP_len;		/* Length of data in JPEG APPn segment */
+	char APP_data[60];	/* Data in the JPEG APPn segment. */
+
+	int COM_len;		/* Length of data in JPEG COM segment */
+	char COM_data[60];	/* Data in JPEG COM segment */
+
+	unsigned long jpeg_markers;	/* Which markers should go into the JPEG output.
+					   Unless you exactly know what you do, leave them untouched.
+					   Inluding less markers will make the resulting code
+					   smaller, but there will be fewer aplications
+					   which can read it.
+					   The presence of the APP and COM marker is
+					   influenced by APP0_len and COM_len ONLY! */
+#define JPEG_MARKER_DHT (1<<3)	/* Define Huffman Tables */
+#define JPEG_MARKER_DQT (1<<4)	/* Define Quantization Tables */
+#define JPEG_MARKER_DRI (1<<5)	/* Define Restart Interval */
+#define JPEG_MARKER_COM (1<<6)	/* Comment segment */
+#define JPEG_MARKER_APP (1<<7)	/* App segment, driver will allways use APP0 */
+
+	int VFIFO_FB;		/* Flag for enabling Video Fifo Feedback.
+				   If this flag is turned on and JPEG decompressing
+				   is going to the screen, the decompress process
+				   is stopped every time the Video Fifo is full.
+				   This enables a smooth decompress to the screen
+				   but the video output signal will get scrambled */
+
+	/* Misc */
+
+	char reserved[312];	/* Makes 512 bytes for this structure */
+};
+
+/*
+   Private IOCTL to set up for displaying MJPEG
+ */
+#define BUZIOC_G_PARAMS       _IOR ('v', BASE_VIDIOCPRIVATE+0,  struct zoran_params)
+#define BUZIOC_S_PARAMS       _IOWR('v', BASE_VIDIOCPRIVATE+1,  struct zoran_params)
+#define BUZIOC_REQBUFS        _IOWR('v', BASE_VIDIOCPRIVATE+2,  struct zoran_requestbuffers)
+#define BUZIOC_QBUF_CAPT      _IOW ('v', BASE_VIDIOCPRIVATE+3,  int)
+#define BUZIOC_QBUF_PLAY      _IOW ('v', BASE_VIDIOCPRIVATE+4,  int)
+#define BUZIOC_SYNC           _IOR ('v', BASE_VIDIOCPRIVATE+5,  struct zoran_sync)
+#define BUZIOC_G_STATUS       _IOWR('v', BASE_VIDIOCPRIVATE+6,  struct zoran_status)
+
+
+#ifdef __KERNEL__
+
+#define BUZ_NUM_STAT_COM    4
+#define BUZ_MASK_STAT_COM   3
+
+#define BUZ_MAX_FRAME     256	/* Must be a power of 2 */
+#define BUZ_MASK_FRAME    255	/* Must be BUZ_MAX_FRAME-1 */
+
+#if VIDEO_MAX_FRAME <= 32
+#define   V4L_MAX_FRAME   32
+#elif VIDEO_MAX_FRAME <= 64
+#define   V4L_MAX_FRAME   64
+#else
+#error   "Too many video frame buffers to handle"
+#endif
+#define   V4L_MASK_FRAME   (V4L_MAX_FRAME - 1)
+
+
+#include "zr36057.h"
+
+enum zoran_codec_mode {
+	BUZ_MODE_IDLE,		/* nothing going on */
+	BUZ_MODE_MOTION_COMPRESS,	/* grabbing frames */
+	BUZ_MODE_MOTION_DECOMPRESS,	/* playing frames */
+	BUZ_MODE_STILL_COMPRESS,	/* still frame conversion */
+	BUZ_MODE_STILL_DECOMPRESS	/* still frame conversion */
+};
+
+enum zoran_buffer_state {
+	BUZ_STATE_USER,		/* buffer is owned by application */
+	BUZ_STATE_PEND,		/* buffer is queued in pend[] ready to feed to I/O */
+	BUZ_STATE_DMA,		/* buffer is queued in dma[] for I/O */
+	BUZ_STATE_DONE		/* buffer is ready to return to application */
+};
+
+struct zoran_gbuffer {
+	u32 *frag_tab;		/* addresses of frag table */
+	u32 frag_tab_bus;	/* same value cached to save time in ISR */
+	enum zoran_buffer_state state;	/* non-zero if corresponding buffer is in use in grab queue */
+	struct zoran_sync bs;	/* DONE: info to return to application */
+};
+
+struct v4l_gbuffer {
+	char *fbuffer;		/* virtual  address of frame buffer */
+	unsigned long fbuffer_phys;	/* physical address of frame buffer */
+	unsigned long fbuffer_bus;	/* bus      address of frame buffer */
+	enum zoran_buffer_state state;	/* state: unused/pending/done */
+};
+
+struct zoran {
+	struct video_device video_dev;
+	struct i2c_bus i2c;
+
+	int initialized;	/* flag if zoran has been correctly initalized */
+	int user;		/* number of current users (0 or 1) */
+
+	unsigned short id;	/* number of this device */
+	char name[32];		/* name of this device */
+	struct pci_dev *pci_dev;	/* PCI device */
+	unsigned char revision;		/* revision of zr36057 */
+	int board;			/* Board type */
+#define BOARD_BUZ		0
+#define BOARD_LML33		1	
+	unsigned int zr36057_adr;	/* bus address of IO mem returned by PCI BIOS */
+	unsigned char *zr36057_mem;	/* pointer to mapped IO memory */
+
+	int map_mjpeg_buffers;	/* Flag which bufferset will map by next mmap() */
+
+	spinlock_t lock;	/* Spinlock */
+
+	/* Video for Linux parameters */
+
+	struct video_picture picture;	/* Current picture params */
+	struct video_buffer buffer;	/* Current buffer params */
+	struct video_window window;	/* Current window params */
+	int buffer_set, window_set;	/* Flags if the above structures are set */
+	int video_interlace;	/* Image on screen is interlaced */
+
+	u32 *overlay_mask;
+
+	struct wait_queue *v4l_capq;	/* wait here for grab to finish */
+
+	int v4l_overlay_active;	/* Overlay grab is activated */
+	int v4l_memgrab_active;	/* Memory grab is activated */
+
+	int v4l_grab_frame;	/* Frame number being currently grabbed */
+#define NO_GRAB_ACTIVE (-1)
+	int v4l_grab_seq;	/* Number of frames grabbed */
+	int gwidth;		/* Width of current memory capture */
+	int gheight;		/* Height of current memory capture */
+	int gformat;		/* Format of ... */
+	int gbpl;		/* byte per line of ... */
+
+	/* V4L grab queue of frames pending */
+
+	unsigned v4l_pend_head;
+	unsigned v4l_pend_tail;
+	int v4l_pend[V4L_MAX_FRAME];
+
+	struct v4l_gbuffer v4l_gbuf[VIDEO_MAX_FRAME];	/* V4L   buffers' info */
+
+	/* Buz MJPEG parameters */
+
+	unsigned long jpg_nbufs;	/* Number of buffers */
+	unsigned long jpg_bufsize;	/* Size of mjpeg buffers in bytes */
+	int jpg_buffers_allocated;	/* Flag if buffers are allocated  */
+	int need_contiguous;	/* Flag if contiguous buffers are needed */
+
+	enum zoran_codec_mode codec_mode;		/* status of codec */
+	struct zoran_params params;	/* structure with a lot of things to play with */
+
+	struct wait_queue *jpg_capq;	/* wait here for grab to finish */
+
+	/* grab queue counts/indices, mask with BUZ_MASK_STAT_COM before using as index */
+	/* (dma_head - dma_tail) is number active in DMA, must be <= BUZ_NUM_STAT_COM */
+	/* (value & BUZ_MASK_STAT_COM) corresponds to index in stat_com table */
+	unsigned long jpg_que_head;	/* Index where to put next buffer which is queued */
+	unsigned long jpg_dma_head;	/* Index of next buffer which goes into stat_com  */
+	unsigned long jpg_dma_tail;	/* Index of last buffer in stat_com               */
+	unsigned long jpg_que_tail;	/* Index of last buffer in queue                  */
+	unsigned long jpg_seq_num;	/* count of frames since grab/play started */
+
+	/* zr36057's code buffer table */
+	u32 *stat_com;		/* stat_com[i] is indexed by dma_head/tail & BUZ_MASK_STAT_COM */
+
+	/* (value & BUZ_MASK_FRAME) corresponds to index in pend[] queue */
+	int jpg_pend[BUZ_MAX_FRAME];
+
+	/* array indexed by frame number */
+	struct zoran_gbuffer jpg_gbuf[BUZ_MAX_FRAME];	/* MJPEG buffers' info */
+};
+
+#endif
+
+/*The following should be done in more portable way. It depends on define
+   of _ALPHA_BUZ in the Makefile. */
+
+#ifdef _ALPHA_BUZ
+#define btwrite(dat,adr)    writel((dat),(char *) (zr->zr36057_adr+(adr)))
+#define btread(adr)         readl(zr->zr36057_adr+(adr))
+#else
+#define btwrite(dat,adr)    writel((dat), (char *) (zr->zr36057_mem+(adr)))
+#define btread(adr)         readl(zr->zr36057_mem+(adr))
+#endif
+
+#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)
+
+#define I2C_TSA5522        0xc2
+#define I2C_TDA9850        0xb6
+#define I2C_HAUPEE         0xa0
+#define I2C_STBEE          0xae
+#define   I2C_SAA7111        0x48
+#define   I2C_SAA7185        0x88
+
+#define TDA9850_CON1       0x04
+#define TDA9850_CON2       0x05
+#define TDA9850_CON3       0x06
+#define TDA9850_CON4       0x07
+#define TDA9850_ALI1       0x08
+#define TDA9850_ALI2       0x09
+#define TDA9850_ALI3       0x0a
+
+#endif