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/*
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 semaphore 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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