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Diffstat (limited to 'drivers/media/video/planb.h')
| -rw-r--r-- | drivers/media/video/planb.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/drivers/media/video/planb.h b/drivers/media/video/planb.h new file mode 100644 index 00000000000..8a0faad1611 --- /dev/null +++ b/drivers/media/video/planb.h @@ -0,0 +1,231 @@ +/* + 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_ */ |