-/*
- planb - PlanB frame grabber driver
-
- PlanB is used in the 7x00/8x00 series of PowerMacintosh
- Computers as video input DMA controller.
-
- Copyright (C) 1998 Michel Lanners (mlan@cpu.lu)
-
- Based largely on the bttv driver by Ralph Metzler (rjkm@thp.uni-koeln.de)
-
- Additional debugging and coding by Takashi Oe (toe@unlserve.unl.edu)
-
-
- 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.
-*/
-
-/* $Id: planb.h,v 1.13 1999/05/03 19:28:56 mlan Exp $ */
-
-#ifndef _PLANB_H_
-#define _PLANB_H_
-
-#ifdef __KERNEL__
-#include <asm/dbdma.h>
-#include "saa7196.h"
-#endif /* __KERNEL__ */
-
-#define PLANB_DEVICE_NAME "Apple PlanB Video-In"
-#define PLANB_REV "1.0"
-
-#ifdef __KERNEL__
-//#define PLANB_GSCANLINE /* use this if apps have the notion of */
- /* grab buffer scanline */
-/* This should be safe for both PAL and NTSC */
-#define PLANB_MAXPIXELS 768
-#define PLANB_MAXLINES 576
-#define PLANB_NTSC_MAXLINES 480
-
-/* Uncomment your preferred norm ;-) */
-#define PLANB_DEF_NORM VIDEO_MODE_PAL
-//#define PLANB_DEF_NORM VIDEO_MODE_NTSC
-//#define PLANB_DEF_NORM VIDEO_MODE_SECAM
-
-/* fields settings */
-#define PLANB_GRAY 0x1 /* 8-bit mono? */
-#define PLANB_COLOUR15 0x2 /* 16-bit mode */
-#define PLANB_COLOUR32 0x4 /* 32-bit mode */
-#define PLANB_CLIPMASK 0x8 /* hardware clipmasking */
-
-/* misc. flags for PlanB DMA operation */
-#define CH_SYNC 0x1 /* synchronize channels (set by ch1;
- cleared by ch2) */
-#define FIELD_SYNC 0x2 /* used for the start of each field
- (0 -> 1 -> 0 for ch1; 0 -> 1 for ch2) */
-#define EVEN_FIELD 0x0 /* even field is detected if unset */
-#define DMA_ABORT 0x2 /* error or just out of sync if set */
-#define ODD_FIELD 0x4 /* odd field is detected if set */
-
-/* for capture operations */
-#define MAX_GBUFFERS 2
-/* note PLANB_MAX_FBUF must be divisible by PAGE_SIZE */
-#ifdef PLANB_GSCANLINE
-#define PLANB_MAX_FBUF 0x240000 /* 576 * 1024 * 4 */
-#define TAB_FACTOR (1)
-#else
-#define PLANB_MAX_FBUF 0x1b0000 /* 576 * 768 * 4 */
-#define TAB_FACTOR (2)
-#endif
-#endif /* __KERNEL__ */
-
-struct planb_saa_regs {
- unsigned char addr;
- unsigned char val;
-};
-
-struct planb_stat_regs {
- unsigned int ch1_stat;
- unsigned int ch2_stat;
- unsigned char saa_stat0;
- unsigned char saa_stat1;
-};
-
-struct planb_any_regs {
- unsigned int offset;
- unsigned int bytes;
- unsigned char data[128];
-};
-
-/* planb private ioctls */
-#define PLANBIOCGSAAREGS _IOWR('v', BASE_VIDIOCPRIVATE, struct planb_saa_regs) /* Read a saa7196 reg value */
-#define PLANBIOCSSAAREGS _IOW('v', BASE_VIDIOCPRIVATE + 1, struct planb_saa_regs) /* Set a saa7196 reg value */
-#define PLANBIOCGSTAT _IOR('v', BASE_VIDIOCPRIVATE + 2, struct planb_stat_regs) /* Read planb status */
-#define PLANB_TV_MODE 1
-#define PLANB_VTR_MODE 2
-#define PLANBIOCGMODE _IOR('v', BASE_VIDIOCPRIVATE + 3, int) /* Get TV/VTR mode */
-#define PLANBIOCSMODE _IOW('v', BASE_VIDIOCPRIVATE + 4, int) /* Set TV/VTR mode */
-
-#ifdef PLANB_GSCANLINE
-#define PLANBG_GRAB_BPL _IOR('v', BASE_VIDIOCPRIVATE + 5, int) /* # of bytes per scanline in grab buffer */
-#endif
-
-/* call wake_up_interruptible() with appropriate actions */
-#define PLANB_INTR_DEBUG _IOW('v', BASE_VIDIOCPRIVATE + 20, int)
-/* investigate which reg does what */
-#define PLANB_INV_REGS _IOWR('v', BASE_VIDIOCPRIVATE + 21, struct planb_any_regs)
-
-#ifdef __KERNEL__
-
-/* Potentially useful macros */
-#define PLANB_SET(x) ((x) << 16 | (x))
-#define PLANB_CLR(x) ((x) << 16)
-
-/* This represents the physical register layout */
-struct planb_registers {
- volatile struct dbdma_regs ch1; /* 0x00: video in */
- volatile unsigned int even; /* 0x40: even field setting */
- volatile unsigned int odd; /* 0x44; odd field setting */
- unsigned int pad1[14]; /* empty? */
- volatile struct dbdma_regs ch2; /* 0x80: clipmask out */
- unsigned int pad2[16]; /* 0xc0: empty? */
- volatile unsigned int reg3; /* 0x100: ???? */
- volatile unsigned int intr_stat; /* 0x104: irq status */
-#define PLANB_CLR_IRQ 0x00 /* clear Plan B interrupt */
-#define PLANB_GEN_IRQ 0x01 /* assert Plan B interrupt */
-#define PLANB_FRM_IRQ 0x0100 /* end of frame */
- unsigned int pad3[1]; /* empty? */
- volatile unsigned int reg5; /* 0x10c: ??? */
- unsigned int pad4[60]; /* empty? */
- volatile unsigned char saa_addr; /* 0x200: SAA subadr */
- char pad5[3];
- volatile unsigned char saa_regval; /* SAA7196 write reg. val */
- char pad6[3];
- volatile unsigned char saa_status; /* SAA7196 status byte */
- /* There is more unused stuff here */
-};
-
-struct planb_window {
- int x, y;
- ushort width, height;
- ushort bpp, bpl, depth, pad;
- ushort swidth, sheight;
- int norm;
- int interlace;
- u32 color_fmt;
- int chromakey;
- int mode; /* used to switch between TV/VTR modes */
-};
-
-struct planb_suspend {
- int overlay;
- int frame;
- struct dbdma_cmd cmd;
-};
-
-struct planb {
- struct video_device video_dev;
- struct video_picture picture; /* Current picture params */
- struct video_audio audio_dev; /* Current audio params */
-
- volatile struct planb_registers *planb_base; /* virt base of planb */
- struct planb_registers *planb_base_phys; /* phys base of planb */
- void *priv_space; /* Org. alloc. mem for kfree */
- int user;
- unsigned int tab_size;
- int maxlines;
- struct mutex lock;
- unsigned int irq; /* interrupt number */
- volatile unsigned int intr_mask;
-
- int overlay; /* overlay running? */
- struct planb_window win;
- unsigned long frame_buffer_phys; /* We need phys for DMA */
- int offset; /* offset of pixel 1 */
- volatile struct dbdma_cmd *ch1_cmd; /* Video In DMA cmd buffer */
- volatile struct dbdma_cmd *ch2_cmd; /* Clip Out DMA cmd buffer */
- volatile struct dbdma_cmd *overlay_last1;
- volatile struct dbdma_cmd *overlay_last2;
- unsigned long ch1_cmd_phys;
- volatile unsigned char *mask; /* Clipmask buffer */
- int suspend;
- wait_queue_head_t suspendq;
- struct planb_suspend suspended;
- int cmd_buff_inited; /* cmd buffer inited? */
-
- int grabbing;
- unsigned int gcount;
- wait_queue_head_t capq;
- int last_fr;
- int prev_last_fr;
- unsigned char **rawbuf;
- int rawbuf_size;
- int gbuf_idx[MAX_GBUFFERS];
- volatile struct dbdma_cmd *cap_cmd[MAX_GBUFFERS];
- volatile struct dbdma_cmd *last_cmd[MAX_GBUFFERS];
- volatile struct dbdma_cmd *pre_cmd[MAX_GBUFFERS];
- int need_pre_capture[MAX_GBUFFERS];
-#define PLANB_DUMMY 40 /* # of command buf's allocated for pre-capture seq. */
- int gwidth[MAX_GBUFFERS], gheight[MAX_GBUFFERS];
- unsigned int gfmt[MAX_GBUFFERS];
- int gnorm_switch[MAX_GBUFFERS];
- volatile unsigned int *frame_stat;
-#define GBUFFER_UNUSED 0x00U
-#define GBUFFER_GRABBING 0x01U
-#define GBUFFER_DONE 0x02U
-#ifdef PLANB_GSCANLINE
- int gbytes_per_line;
-#else
-#define MAX_LNUM 431 /* change this if PLANB_MAXLINES or */
- /* PLANB_MAXPIXELS changes */
- int l_fr_addr_idx[MAX_GBUFFERS];
- unsigned char *l_to_addr[MAX_GBUFFERS][MAX_LNUM];
- int l_to_next_idx[MAX_GBUFFERS][MAX_LNUM];
- int l_to_next_size[MAX_GBUFFERS][MAX_LNUM];
- int lsize[MAX_GBUFFERS], lnum[MAX_GBUFFERS];
-#endif
-};
-
-#endif /* __KERNEL__ */
-
-#endif /* _PLANB_H_ */
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