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* zoran - Iomega Buz driver
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* Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
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* zoran.0.0.3 Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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* bttv - Bt848 frame grabber driver
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* Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
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* & Marcus Metzler (mocm@thp.uni-koeln.de)
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#include <media/v4l2-device.h>
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unsigned long frame; /* number of buffer that has been free'd */
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unsigned long length; /* number of code bytes in buffer (capture only) */
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unsigned long seq; /* frame sequence number */
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struct timeval timestamp; /* timestamp */
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#define ZORAN_NAME "ZORAN" /* name of the device */
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#define ZR_DEVNAME(zr) ((zr)->name)
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#define BUZ_MAX_WIDTH (zr->timing->Wa)
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#define BUZ_MAX_HEIGHT (zr->timing->Ha)
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#define BUZ_MIN_WIDTH 32 /* never display less than 32 pixels */
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#define BUZ_MIN_HEIGHT 24 /* never display less than 24 rows */
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#define BUZ_NUM_STAT_COM 4
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#define BUZ_MASK_STAT_COM 3
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#define BUZ_MAX_FRAME 256 /* Must be a power of 2 */
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#define BUZ_MASK_FRAME 255 /* Must be BUZ_MAX_FRAME-1 */
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#define BUZ_MAX_INPUT 16
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#if VIDEO_MAX_FRAME <= 32
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# define V4L_MAX_FRAME 32
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#elif VIDEO_MAX_FRAME <= 64
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# define V4L_MAX_FRAME 64
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# error "Too many video frame buffers to handle"
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#define V4L_MASK_FRAME (V4L_MAX_FRAME - 1)
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#define MAX_FRAME (BUZ_MAX_FRAME > VIDEO_MAX_FRAME ? BUZ_MAX_FRAME : VIDEO_MAX_FRAME)
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DC10_old, /* DC30 like */
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DC10_new, /* DC10plus like */
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/* Linux Media Labs */
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/* total number of cards */
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enum zoran_codec_mode {
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BUZ_MODE_IDLE, /* nothing going on */
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BUZ_MODE_MOTION_COMPRESS, /* grabbing frames */
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BUZ_MODE_MOTION_DECOMPRESS, /* playing frames */
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BUZ_MODE_STILL_COMPRESS, /* still frame conversion */
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BUZ_MODE_STILL_DECOMPRESS /* still frame conversion */
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enum zoran_buffer_state {
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BUZ_STATE_USER, /* buffer is owned by application */
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BUZ_STATE_PEND, /* buffer is queued in pend[] ready to feed to I/O */
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BUZ_STATE_DMA, /* buffer is queued in dma[] for I/O */
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BUZ_STATE_DONE /* buffer is ready to return to application */
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enum zoran_map_mode {
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ZORAN_MAP_MODE_JPG_REC,
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#define ZORAN_MAP_MODE_JPG ZORAN_MAP_MODE_JPG_REC
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ZORAN_MAP_MODE_JPG_PLAY,
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ZR_GPIO_JPEG_SLEEP = 0,
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struct zoran_format {
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#define ZORAN_FORMAT_COMPRESSED 1<<0
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#define ZORAN_FORMAT_OVERLAY 1<<1
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#define ZORAN_FORMAT_CAPTURE 1<<2
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#define ZORAN_FORMAT_PLAYBACK 1<<3
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/* overlay-settings */
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struct zoran_overlay_settings {
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int x, y, width, height; /* position */
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int clipcount; /* position and number of clips */
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const struct zoran_format *format; /* overlay format */
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/* v4l-capture settings */
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struct zoran_v4l_settings {
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int width, height, bytesperline; /* capture size */
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const struct zoran_format *format; /* capture format */
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/* jpg-capture/-playback settings */
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struct zoran_jpg_settings {
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int decimation; /* this bit is used to set everything to default */
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int HorDcm, VerDcm, TmpDcm; /* capture decimation settings (TmpDcm=1 means both fields) */
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int field_per_buff, odd_even; /* field-settings (odd_even=1 (+TmpDcm=1) means top-field-first) */
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int img_x, img_y, img_width, img_height; /* crop settings (subframe capture) */
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struct v4l2_jpegcompression jpg_comp; /* JPEG-specific capture settings */
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struct zoran_mapping {
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struct zoran_buffer {
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struct zoran_mapping *map;
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enum zoran_buffer_state state; /* state: unused/pending/dma/done */
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struct zoran_sync bs; /* DONE: info to return to application */
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__le32 *frag_tab; /* addresses of frag table */
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u32 frag_tab_bus; /* same value cached to save time in ISR */
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char *fbuffer; /* virtual address of frame buffer */
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unsigned long fbuffer_phys;/* physical address of frame buffer */
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unsigned long fbuffer_bus;/* bus address of frame buffer */
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enum zoran_lock_activity {
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ZORAN_FREE, /* free for use */
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ZORAN_ACTIVE, /* active but unlocked */
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ZORAN_LOCKED, /* locked */
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/* buffer collections */
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struct zoran_buffer_col {
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enum zoran_lock_activity active; /* feature currently in use? */
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unsigned int num_buffers, buffer_size;
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struct zoran_buffer buffer[MAX_FRAME]; /* buffers */
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u8 allocated; /* Flag if buffers are allocated */
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u8 need_contiguous; /* Flag if contiguous buffers are needed */
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/* only applies to jpg buffers, raw buffers are always contiguous */
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/* zoran_fh contains per-open() settings */
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enum zoran_map_mode map_mode; /* Flag which bufferset will map by next mmap() */
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struct zoran_overlay_settings overlay_settings;
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u32 *overlay_mask; /* overlay mask */
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enum zoran_lock_activity overlay_active;/* feature currently in use? */
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struct zoran_buffer_col buffers; /* buffers' info */
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struct zoran_v4l_settings v4l_settings; /* structure with a lot of things to play with */
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struct zoran_jpg_settings jpg_settings; /* structure with a lot of things to play with */
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const char *i2c_decoder; /* i2c decoder device */
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const unsigned short *addrs_decoder;
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const char *i2c_encoder; /* i2c encoder device */
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const unsigned short *addrs_encoder;
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u16 video_vfe, video_codec; /* videocodec types */
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u16 audio_chip; /* audio type */
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int inputs; /* number of video inputs */
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} input[BUZ_MAX_INPUT];
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struct tvnorm *tvn[3]; /* supported TV norms */
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u32 jpeg_int; /* JPEG interrupt */
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u32 vsync_int; /* VSYNC interrupt */
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s8 gpio[ZR_GPIO_MAX];
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struct vfe_polarity vfe_pol;
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u8 gpio_pol[ZR_GPIO_MAX];
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/* is the /GWS line connected? */
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u8 gws_not_connected;
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/* avs6eyes mux setting */
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void (*init) (struct zoran * zr);
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struct v4l2_device v4l2_dev;
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struct video_device *video_dev;
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struct i2c_adapter i2c_adapter; /* */
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struct i2c_algo_bit_data i2c_algo; /* */
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struct v4l2_subdev *decoder; /* video decoder sub-device */
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struct v4l2_subdev *encoder; /* video encoder sub-device */
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struct videocodec *codec; /* video codec */
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struct videocodec *vfe; /* video front end */
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struct mutex resource_lock; /* prevent evil stuff */
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struct mutex other_lock; /* please merge with above */
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u8 initialized; /* flag if zoran has been correctly initialized */
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int user; /* number of current users */
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struct card_info card;
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struct tvnorm *timing;
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unsigned short id; /* number of this device */
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char name[32]; /* name of this device */
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struct pci_dev *pci_dev; /* PCI device */
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unsigned char revision; /* revision of zr36057 */
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unsigned char __iomem *zr36057_mem;/* pointer to mapped IO memory */
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spinlock_t spinlock; /* Spinlock */
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/* Video for Linux parameters */
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int input; /* card's norm and input */
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/* Current buffer params */
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int vbuf_height, vbuf_width;
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int vbuf_bytesperline;
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struct zoran_overlay_settings overlay_settings;
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u32 *overlay_mask; /* overlay mask */
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enum zoran_lock_activity overlay_active; /* feature currently in use? */
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wait_queue_head_t v4l_capq;
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int v4l_overlay_active; /* Overlay grab is activated */
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int v4l_memgrab_active; /* Memory grab is activated */
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int v4l_grab_frame; /* Frame number being currently grabbed */
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#define NO_GRAB_ACTIVE (-1)
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unsigned long v4l_grab_seq; /* Number of frames grabbed */
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struct zoran_v4l_settings v4l_settings; /* structure with a lot of things to play with */
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/* V4L grab queue of frames pending */
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unsigned long v4l_pend_head;
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unsigned long v4l_pend_tail;
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unsigned long v4l_sync_tail;
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int v4l_pend[V4L_MAX_FRAME];
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struct zoran_buffer_col v4l_buffers; /* V4L buffers' info */
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/* Buz MJPEG parameters */
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enum zoran_codec_mode codec_mode; /* status of codec */
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struct zoran_jpg_settings jpg_settings; /* structure with a lot of things to play with */
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wait_queue_head_t jpg_capq; /* wait here for grab to finish */
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/* grab queue counts/indices, mask with BUZ_MASK_STAT_COM before using as index */
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/* (dma_head - dma_tail) is number active in DMA, must be <= BUZ_NUM_STAT_COM */
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/* (value & BUZ_MASK_STAT_COM) corresponds to index in stat_com table */
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unsigned long jpg_que_head; /* Index where to put next buffer which is queued */
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unsigned long jpg_dma_head; /* Index of next buffer which goes into stat_com */
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unsigned long jpg_dma_tail; /* Index of last buffer in stat_com */
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unsigned long jpg_que_tail; /* Index of last buffer in queue */
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unsigned long jpg_seq_num; /* count of frames since grab/play started */
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unsigned long jpg_err_seq; /* last seq_num before error */
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unsigned long jpg_err_shift;
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unsigned long jpg_queued_num; /* count of frames queued since grab/play started */
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/* zr36057's code buffer table */
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__le32 *stat_com; /* stat_com[i] is indexed by dma_head/tail & BUZ_MASK_STAT_COM */
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/* (value & BUZ_MASK_FRAME) corresponds to index in pend[] queue */
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int jpg_pend[BUZ_MAX_FRAME];
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/* array indexed by frame number */
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struct zoran_buffer_col jpg_buffers; /* MJPEG buffers' info */
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/* Additional stuff for testing */
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#ifdef CONFIG_PROC_FS
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struct proc_dir_entry *zoran_proc;
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int intr_counter_GIRQ1;
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int intr_counter_GIRQ0;
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int intr_counter_CodRepIRQ;
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int intr_counter_JPEGRepIRQ;
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int END_event_missed;
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unsigned long frame_num;
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wait_queue_head_t test_q;
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static inline struct zoran *to_zoran(struct v4l2_device *v4l2_dev)
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return container_of(v4l2_dev, struct zoran, v4l2_dev);
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/* There was something called _ALPHA_BUZ that used the PCI address instead of
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* the kernel iomapped address for btread/btwrite. */
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#define btwrite(dat,adr) writel((dat), zr->zr36057_mem+(adr))
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#define btread(adr) readl(zr->zr36057_mem+(adr))
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#define btand(dat,adr) btwrite((dat) & btread(adr), adr)
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#define btor(dat,adr) btwrite((dat) | btread(adr), adr)
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#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)