mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-08 11:34:11 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
232 lines
7.5 KiB
C
232 lines
7.5 KiB
C
/*
|
|
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_ */
|