Subject: Re: [RFC: 2.6 patch] remove the broken VIDEO_PLANB driver

From: Benjamin Herrenschmidt <[email-masked]>
Date: Fri, 05 Jan 2007 08:34:39 +1100

On Thu, 2007-01-04 at 19:53 +0100, Adrian Bunk wrote:
> The VIDEO_PLANB driver:
> - has been marked as BROKEN for more than two years and
> - is still marked as BROKEN.
> 
> Drivers that had been marked as BROKEN for such a long time seem to be
> unlikely to be revived in the forseeable future.
> 
> But if anyone wants to ever revive this driver, the code is still
> present in the older kernel releases.
> 
> Signed-off-by: Adrian Bunk <[email-masked]>

I suppose I could give it a go as I do have a machine with that hardware
rusting somewhere... Don't remove it right away, I'll have a look.

Ben.

> ---
> 
>  drivers/media/video/Kconfig   |   11 
>  drivers/media/video/Makefile  |    1 
>  drivers/media/video/planb.c   | 2304 ----------------------------------
>  drivers/media/video/planb.h   |  231 ---
>  drivers/media/video/saa7196.h |  117 -
>  5 files changed, 2664 deletions(-)
> 
> --- linux-2.6.20-rc2-mm1/drivers/media/video/Kconfig.old	2007-01-04 17:49:44.000000000 +0100
> +++ linux-2.6.20-rc2-mm1/drivers/media/video/Kconfig	2007-01-04 17:49:55.000000000 +0100
> @@ -375,17 +375,6 @@
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called pms.
>  
> -config VIDEO_PLANB
> -	tristate "PlanB Video-In on PowerMac"
> -	depends on PPC_PMAC && VIDEO_V4L1 && BROKEN
> -	help
> -	  PlanB is the V4L driver for the PowerMac 7x00/8x00 series video
> -	  input hardware. If you want to experiment with this, say Y.
> -	  Otherwise, or if you don't understand a word, say N. See
> -	  <http://www.cpu.lu/~mlan/linux/dev/planb.html> for more info.
> -
> -	  Saying M will compile this driver as a module (planb).
> -
>  config VIDEO_BWQCAM
>  	tristate "Quickcam BW Video For Linux"
>  	depends on PARPORT && VIDEO_V4L1
> --- linux-2.6.20-rc2-mm1/drivers/media/video/Makefile.old	2007-01-04 17:50:03.000000000 +0100
> +++ linux-2.6.20-rc2-mm1/drivers/media/video/Makefile	2007-01-04 17:50:07.000000000 +0100
> @@ -52,7 +52,6 @@
>  obj-$(CONFIG_VIDEO_ZORAN_ZR36060) += zr36060.o
>  
>  obj-$(CONFIG_VIDEO_PMS) += pms.o
> -obj-$(CONFIG_VIDEO_PLANB) += planb.o
>  obj-$(CONFIG_VIDEO_VINO) += vino.o indycam.o
>  obj-$(CONFIG_VIDEO_STRADIS) += stradis.o
>  obj-$(CONFIG_VIDEO_CPIA) += cpia.o
> --- linux-2.6.20-rc2-mm1/drivers/media/video/saa7196.h	2006-11-29 22:57:37.000000000 +0100
> +++ /dev/null	2006-09-19 00:45:31.000000000 +0200
> @@ -1,117 +0,0 @@
> -/*
> -    Definitions for the Philips SAA7196 digital video decoder,
> -    scaler, and clock generator circuit (DESCpro), as used in
> -    the PlanB video input of the Powermac 7x00/8x00 series.
> -
> -    Copyright (C) 1998 Michel Lanners ([email-masked])
> -
> -    The register defines are shamelessly copied from the meteor
> -    driver out of NetBSD (with permission),
> -    and are copyrighted (c) 1995 Mark Tinguely and Jim Lowe
> -    (Thanks !)
> -
> -    Additional debugging and coding by Takashi Oe ([email-masked])
> -
> -    The default values used for PlanB are my mistakes.
> -*/
> -
> -/* $Id: saa7196.h,v 1.5 1999/03/26 23:28:47 mlan Exp $ */
> -
> -#ifndef _SAA7196_H_
> -#define _SAA7196_H_
> -
> -#define SAA7196_NUMREGS	0x31	/* Number of registers (used)*/
> -#define NUM_SUPPORTED_NORM 3	/* Number of supported norms by PlanB */
> -
> -/* Decoder part: */
> -#define SAA7196_IDEL    0x00    /* Increment delay */
> -#define SAA7196_HSB5    0x01    /* H-sync begin; 50 hz */
> -#define SAA7196_HSS5    0x02    /* H-sync stop; 50 hz */
> -#define SAA7196_HCB5    0x03    /* H-clamp begin; 50 hz */
> -#define SAA7196_HCS5    0x04    /* H-clamp stop; 50 hz */
> -#define SAA7196_HSP5    0x05    /* H-sync after PHI1; 50 hz */
> -#define SAA7196_LUMC    0x06    /* Luminance control */
> -#define SAA7196_HUEC    0x07    /* Hue control */
> -#define SAA7196_CKTQ    0x08    /* Colour Killer Threshold QAM (PAL, NTSC) */
> -#define SAA7196_CKTS    0x09    /* Colour Killer Threshold SECAM */
> -#define SAA7196_PALS    0x0a    /* PAL switch sensitivity */
> -#define SAA7196_SECAMS  0x0b    /* SECAM switch sensitivity */
> -#define SAA7196_CGAINC  0x0c    /* Chroma gain control */
> -#define SAA7196_STDC    0x0d    /* Standard/Mode control */
> -#define SAA7196_IOCC    0x0e    /* I/O and Clock Control */
> -#define SAA7196_CTRL1   0x0f    /* Control #1 */
> -#define SAA7196_CTRL2   0x10    /* Control #2 */
> -#define SAA7196_CGAINR  0x11    /* Chroma Gain Reference */
> -#define SAA7196_CSAT    0x12    /* Chroma Saturation */
> -#define SAA7196_CONT    0x13    /* Luminance Contrast */
> -#define SAA7196_HSB6    0x14    /* H-sync begin; 60 hz */
> -#define SAA7196_HSS6    0x15    /* H-sync stop; 60 hz */
> -#define SAA7196_HCB6    0x16    /* H-clamp begin; 60 hz */
> -#define SAA7196_HCS6    0x17    /* H-clamp stop; 60 hz */
> -#define SAA7196_HSP6    0x18    /* H-sync after PHI1; 60 hz */
> -#define SAA7196_BRIG    0x19    /* Luminance Brightness */
> -
> -/* Scaler part: */
> -#define SAA7196_FMTS    0x20    /* Formats and sequence */
> -#define SAA7196_OUTPIX  0x21    /* Output data pixel/line */
> -#define SAA7196_INPIX   0x22    /* Input data pixel/line */
> -#define SAA7196_HWS     0x23    /* Horiz. window start */
> -#define SAA7196_HFILT   0x24    /* Horiz. filter */
> -#define SAA7196_OUTLINE 0x25    /* Output data lines/field */
> -#define SAA7196_INLINE  0x26    /* Input data lines/field */
> -#define SAA7196_VWS     0x27    /* Vertical window start */
> -#define SAA7196_VYP     0x28    /* AFS/vertical Y processing */
> -#define SAA7196_VBS     0x29    /* Vertical Bypass start */
> -#define SAA7196_VBCNT   0x2a    /* Vertical Bypass count */
> -#define SAA7196_VBP     0x2b    /* veritcal Bypass Polarity */
> -#define SAA7196_VLOW    0x2c    /* Colour-keying lower V limit */
> -#define SAA7196_VHIGH   0x2d    /* Colour-keying upper V limit */
> -#define SAA7196_ULOW    0x2e    /* Colour-keying lower U limit */
> -#define SAA7196_UHIGH   0x2f    /* Colour-keying upper U limit */
> -#define SAA7196_DPATH   0x30    /* Data path setting  */
> -
> -/* Initialization default values: */
> -
> -unsigned char saa_regs[NUM_SUPPORTED_NORM][SAA7196_NUMREGS] = {
> -
> -/* PAL, 768x576 (no scaling), composite video-in */
> -/* Decoder: */
> -      { 0x50, 0x30, 0x00, 0xe8, 0xb6, 0xe5, 0x63, 0xff,
> -	0xfe, 0xf0, 0xfe, 0xe0, 0x20, 0x06, 0x3b, 0x98,
> -	0x00, 0x59, 0x41, 0x45, 0x34, 0x0a, 0xf4, 0xd2,
> -	0xe9, 0xa2,
> -/* Padding */
> -		    0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
> -/* Scaler: */
> -	0x72, 0x80, 0x00, 0x03, 0x8d, 0x20, 0x20, 0x12,
> -	0xa5, 0x12, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
> -	0x87 },
> -
> -/* NTSC, 640x480? (no scaling), composite video-in */
> -/* Decoder: */
> -      { 0x50, 0x30, 0x00, 0xe8, 0xb6, 0xe5, 0x50, 0x00,
> -	0xf8, 0xf0, 0xfe, 0xe0, 0x00, 0x06, 0x3b, 0x98,
> -	0x00, 0x2c, 0x3d, 0x40, 0x34, 0x0a, 0xf4, 0xd2,
> -	0xe9, 0x98,
> -/* Padding */
> -		    0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
> -/* Scaler: */
> -	0x72, 0x80, 0x80, 0x03, 0x89, 0xf0, 0xf0, 0x0d,
> -	0xa0, 0x0d, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
> -	0x87 },
> -
> -/* SECAM, 768x576 (no scaling), composite video-in */
> -/* Decoder: */
> -      { 0x50, 0x30, 0x00, 0xe8, 0xb6, 0xe5, 0x63, 0xff,
> -	0xfe, 0xf0, 0xfe, 0xe0, 0x20, 0x07, 0x3b, 0x98,
> -	0x00, 0x59, 0x41, 0x45, 0x34, 0x0a, 0xf4, 0xd2,
> -	0xe9, 0xa2,
> -/* Padding */
> -		    0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
> -/* Scaler: */
> -	0x72, 0x80, 0x00, 0x03, 0x8d, 0x20, 0x20, 0x12,
> -	0xa5, 0x12, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00,
> -	0x87 }
> -	};
> -
> -#endif /* _SAA7196_H_ */
> --- linux-2.6.20-rc2-mm1/drivers/media/video/planb.h	2006-11-29 22:57:37.000000000 +0100
> +++ /dev/null	2006-09-19 00:45:31.000000000 +0200
> @@ -1,231 +0,0 @@
> -/*
> -    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 ([email-masked])
> -
> -    Based largely on the bttv driver by Ralph Metzler ([email-masked])
> -
> -    Additional debugging and coding by Takashi Oe ([email-masked])
> -
> -
> -    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_ */
> --- linux-2.6.20-rc2-mm1/drivers/media/video/planb.c	2006-12-28 11:57:33.000000000 +0100
> +++ /dev/null	2006-09-19 00:45:31.000000000 +0200
> @@ -1,2304 +0,0 @@
> -/*
> -    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 ([email-masked])
> -
> -    Based largely on the bttv driver by Ralph Metzler ([email-masked])
> -
> -    Additional debugging and coding by Takashi Oe ([email-masked])
> -
> -    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.c,v 1.18 1999/05/02 17:36:34 mlan Exp $ */
> -
> -#include <linux/init.h>
> -#include <linux/errno.h>
> -#include <linux/module.h>
> -#include <linux/kernel.h>
> -#include <linux/major.h>
> -#include <linux/slab.h>
> -#include <linux/types.h>
> -#include <linux/pci.h>
> -#include <linux/delay.h>
> -#include <linux/vmalloc.h>
> -#include <linux/mm.h>
> -#include <linux/sched.h>
> -#include <linux/videodev.h>
> -#include <media/v4l2-common.h>
> -#include <linux/wait.h>
> -#include <asm/uaccess.h>
> -#include <asm/io.h>
> -#include <asm/prom.h>
> -#include <asm/dbdma.h>
> -#include <asm/pgtable.h>
> -#include <asm/page.h>
> -#include <asm/irq.h>
> -#include <linux/mutex.h>
> -
> -#include "planb.h"
> -#include "saa7196.h"
> -
> -/* Would you mind for some ugly debugging? */
> -#if 0
> -#define DEBUG(x...) printk(KERN_DEBUG ## x) /* Debug driver */
> -#else
> -#define DEBUG(x...) 		/* Don't debug driver */
> -#endif
> -
> -#if 0
> -#define IDEBUG(x...) printk(KERN_DEBUG ## x) /* Debug interrupt part */
> -#else
> -#define IDEBUG(x...) 		/* Don't debug interrupt part */
> -#endif
> -
> -/* Ever seen a Mac with more than 1 of these? */
> -#define PLANB_MAX 1
> -
> -static int planb_num;
> -static struct planb planbs[PLANB_MAX];
> -static volatile struct planb_registers *planb_regs;
> -
> -static int def_norm = PLANB_DEF_NORM;	/* default norm */
> -static int video_nr = -1;
> -
> -module_param(def_norm, int, 0);
> -MODULE_PARM_DESC(def_norm, "Default startup norm (0=PAL, 1=NTSC, 2=SECAM)");
> -module_param(video_nr, int, 0);
> -MODULE_LICENSE("GPL");
> -
> -
> -/* ------------------ PlanB Exported Functions ------------------ */
> -static long planb_write(struct video_device *, const char *, unsigned long, int);
> -static long planb_read(struct video_device *, char *, unsigned long, int);
> -static int planb_open(struct video_device *, int);
> -static void planb_close(struct video_device *);
> -static int planb_ioctl(struct video_device *, unsigned int, void *);
> -static int planb_init_done(struct video_device *);
> -static int planb_mmap(struct video_device *, const char *, unsigned long);
> -static void planb_irq(int, void *);
> -static void release_planb(void);
> -int init_planbs(struct video_init *);
> -
> -/* ------------------ PlanB Internal Functions ------------------ */
> -static int planb_prepare_open(struct planb *);
> -static void planb_prepare_close(struct planb *);
> -static void saa_write_reg(unsigned char, unsigned char);
> -static unsigned char saa_status(int, struct planb *);
> -static void saa_set(unsigned char, unsigned char, struct planb *);
> -static void saa_init_regs(struct planb *);
> -static int grabbuf_alloc(struct planb *);
> -static int vgrab(struct planb *, struct video_mmap *);
> -static void add_clip(struct planb *, struct video_clip *);
> -static void fill_cmd_buff(struct planb *);
> -static void cmd_buff(struct planb *);
> -static volatile struct dbdma_cmd *setup_grab_cmd(int, struct planb *);
> -static void overlay_start(struct planb *);
> -static void overlay_stop(struct planb *);
> -static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *, unsigned short,
> -	unsigned int);
> -static inline void tab_cmd_store(volatile struct dbdma_cmd *, unsigned int,
> -	unsigned int);
> -static inline void tab_cmd_gen(volatile struct dbdma_cmd *, unsigned short,
> -	unsigned short, unsigned int, unsigned int);
> -static int init_planb(struct planb *);
> -static int find_planb(void);
> -static void planb_pre_capture(int, int, struct planb *);
> -static volatile struct dbdma_cmd *cmd_geo_setup(volatile struct dbdma_cmd *,
> -					int, int, int, int, int, struct planb *);
> -static inline void planb_dbdma_stop(volatile struct dbdma_regs *);
> -static unsigned int saa_geo_setup(int, int, int, int, struct planb *);
> -static inline int overlay_is_active(struct planb *);
> -
> -/*******************************/
> -/* Memory management functions */
> -/*******************************/
> -
> -static int grabbuf_alloc(struct planb *pb)
> -{
> -	int i, npage;
> -
> -	npage = MAX_GBUFFERS * ((PLANB_MAX_FBUF / PAGE_SIZE + 1)
> -#ifndef PLANB_GSCANLINE
> -		+ MAX_LNUM
> -#endif /* PLANB_GSCANLINE */
> -		);
> -	if ((pb->rawbuf = kmalloc(npage
> -				* sizeof(unsigned long), GFP_KERNEL)) == 0)
> -		return -ENOMEM;
> -	for (i = 0; i < npage; i++) {
> -		pb->rawbuf[i] = (unsigned char *)__get_free_pages(GFP_KERNEL
> -								|GFP_DMA, 0);
> -		if (!pb->rawbuf[i])
> -			break;
> -		SetPageReserved(virt_to_page(pb->rawbuf[i]));
> -	}
> -	if (i-- < npage) {
> -		printk(KERN_DEBUG "PlanB: init_grab: grab buffer not allocated\n");
> -		for (; i > 0; i--) {
> -			ClearPageReserved(virt_to_page(pb->rawbuf[i]));
> -			free_pages((unsigned long)pb->rawbuf[i], 0);
> -		}
> -		kfree(pb->rawbuf);
> -		return -ENOBUFS;
> -	}
> -	pb->rawbuf_size = npage;
> -	return 0;
> -}
> -
> -/*****************************/
> -/* Hardware access functions */
> -/*****************************/
> -
> -static void saa_write_reg(unsigned char addr, unsigned char val)
> -{
> -	planb_regs->saa_addr = addr; eieio();
> -	planb_regs->saa_regval = val; eieio();
> -	return;
> -}
> -
> -/* return  status byte 0 or 1: */
> -static unsigned char saa_status(int byte, struct planb *pb)
> -{
> -	saa_regs[pb->win.norm][SAA7196_STDC] =
> -		(saa_regs[pb->win.norm][SAA7196_STDC] & ~2) | ((byte & 1) << 1);
> -	saa_write_reg (SAA7196_STDC, saa_regs[pb->win.norm][SAA7196_STDC]);
> -
> -	/* Let's wait 30msec for this one */
> -	msleep_interruptible(30);
> -
> -	return (unsigned char)in_8 (&planb_regs->saa_status);
> -}
> -
> -static void saa_set(unsigned char addr, unsigned char val, struct planb *pb)
> -{
> -	if(saa_regs[pb->win.norm][addr] != val) {
> -		saa_regs[pb->win.norm][addr] = val;
> -		saa_write_reg (addr, val);
> -	}
> -	return;
> -}
> -
> -static void saa_init_regs(struct planb *pb)
> -{
> -	int i;
> -
> -	for (i = 0; i < SAA7196_NUMREGS; i++)
> -		saa_write_reg (i, saa_regs[pb->win.norm][i]);
> -}
> -
> -static unsigned int saa_geo_setup(int width, int height, int interlace, int bpp,
> -	struct planb *pb)
> -{
> -	int ht, norm = pb->win.norm;
> -
> -	switch(bpp) {
> -	case 2:
> -		/* RGB555+a 1x16-bit + 16-bit transparent */
> -		saa_regs[norm][SAA7196_FMTS] &= ~0x3;
> -		break;
> -	case 1:
> -	case 4:
> -		/* RGB888 1x24-bit + 8-bit transparent */
> -		saa_regs[norm][SAA7196_FMTS] &= ~0x1;
> -		saa_regs[norm][SAA7196_FMTS] |= 0x2;
> -		break;
> -	default:
> -		return -EINVAL;
> -	}
> -	ht = (interlace ? height / 2 : height);
> -	saa_regs[norm][SAA7196_OUTPIX] = (unsigned char) (width & 0x00ff);
> -	saa_regs[norm][SAA7196_HFILT] = (saa_regs[norm][SAA7196_HFILT] & ~0x3)
> -						| (width >> 8 & 0x3);
> -	saa_regs[norm][SAA7196_OUTLINE] = (unsigned char) (ht & 0xff);
> -	saa_regs[norm][SAA7196_VYP] = (saa_regs[norm][SAA7196_VYP] & ~0x3)
> -						| (ht >> 8 & 0x3);
> -	/* feed both fields if interlaced, or else feed only even fields */
> -	saa_regs[norm][SAA7196_FMTS] = (interlace) ?
> -					(saa_regs[norm][SAA7196_FMTS] & ~0x60)
> -					: (saa_regs[norm][SAA7196_FMTS] | 0x60);
> -	/* transparent mode; extended format enabled */
> -	saa_regs[norm][SAA7196_DPATH] |= 0x3;
> -
> -	return 0;
> -}
> -
> -/***************************/
> -/* DBDMA support functions */
> -/***************************/
> -
> -static inline void planb_dbdma_restart(volatile struct dbdma_regs *ch)
> -{
> -	out_le32(&ch->control, PLANB_CLR(RUN));
> -	out_le32(&ch->control, PLANB_SET(RUN|WAKE) | PLANB_CLR(PAUSE));
> -}
> -
> -static inline void planb_dbdma_stop(volatile struct dbdma_regs *ch)
> -{
> -	int i = 0;
> -
> -	out_le32(&ch->control, PLANB_CLR(RUN) | PLANB_SET(FLUSH));
> -	while((in_le32(&ch->status) == (ACTIVE | FLUSH)) && (i < 999)) {
> -		IDEBUG("PlanB: waiting for DMA to stop\n");
> -		i++;
> -	}
> -}
> -
> -static inline void tab_cmd_dbdma(volatile struct dbdma_cmd *ch,
> -	unsigned short command, unsigned int cmd_dep)
> -{
> -	st_le16(&ch->command, command);
> -	st_le32(&ch->cmd_dep, cmd_dep);
> -}
> -
> -static inline void tab_cmd_store(volatile struct dbdma_cmd *ch,
> -	unsigned int phy_addr, unsigned int cmd_dep)
> -{
> -	st_le16(&ch->command, STORE_WORD | KEY_SYSTEM);
> -	st_le16(&ch->req_count, 4);
> -	st_le32(&ch->phy_addr, phy_addr);
> -	st_le32(&ch->cmd_dep, cmd_dep);
> -}
> -
> -static inline void tab_cmd_gen(volatile struct dbdma_cmd *ch,
> -	unsigned short command, unsigned short req_count,
> -	unsigned int phy_addr, unsigned int cmd_dep)
> -{
> -	st_le16(&ch->command, command);
> -	st_le16(&ch->req_count, req_count);
> -	st_le32(&ch->phy_addr, phy_addr);
> -	st_le32(&ch->cmd_dep, cmd_dep);
> -}
> -
> -static volatile struct dbdma_cmd *cmd_geo_setup(
> -	volatile struct dbdma_cmd *c1, int width, int height, int interlace,
> -	int bpp, int clip, struct planb *pb)
> -{
> -	int norm = pb->win.norm;
> -
> -	if((saa_geo_setup(width, height, interlace, bpp, pb)) != 0)
> -		return (volatile struct dbdma_cmd *)NULL;
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_FMTS);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_FMTS]);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_DPATH);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_DPATH]);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->even),
> -					bpp | ((clip)? PLANB_CLIPMASK: 0));
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->odd),
> -					bpp | ((clip)? PLANB_CLIPMASK: 0));
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_OUTPIX);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_OUTPIX]);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_HFILT);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_HFILT]);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_OUTLINE);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_OUTLINE]);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_addr),
> -							SAA7196_VYP);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->saa_regval),
> -					saa_regs[norm][SAA7196_VYP]);
> -	return c1;
> -}
> -
> -/******************************/
> -/* misc. supporting functions */
> -/******************************/
> -
> -static inline void planb_lock(struct planb *pb)
> -{
> -	mutex_lock(&pb->lock);
> -}
> -
> -static inline void planb_unlock(struct planb *pb)
> -{
> -	mutex_unlock(&pb->lock);
> -}
> -
> -/***************/
> -/* Driver Core */
> -/***************/
> -
> -static int planb_prepare_open(struct planb *pb)
> -{
> -	int	i, size;
> -
> -	/* allocate memory for two plus alpha command buffers (size: max lines,
> -	   plus 40 commands handling, plus 1 alignment), plus dummy command buf,
> -	   plus clipmask buffer, plus frame grabbing status */
> -	size = (pb->tab_size*(2+MAX_GBUFFERS*TAB_FACTOR)+1+MAX_GBUFFERS
> -		* PLANB_DUMMY)*sizeof(struct dbdma_cmd)
> -		+(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8
> -		+MAX_GBUFFERS*sizeof(unsigned int);
> -	if ((pb->priv_space = kmalloc (size, GFP_KERNEL)) == 0)
> -		return -ENOMEM;
> -	memset ((void *) pb->priv_space, 0, size);
> -	pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *)
> -						DBDMA_ALIGN (pb->priv_space);
> -	pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size;
> -	pb->ch1_cmd_phys = virt_to_bus(pb->ch1_cmd);
> -	pb->cap_cmd[0] = pb->ch2_cmd + pb->tab_size;
> -	pb->pre_cmd[0] = pb->cap_cmd[0] + pb->tab_size * TAB_FACTOR;
> -	for (i = 1; i < MAX_GBUFFERS; i++) {
> -		pb->cap_cmd[i] = pb->pre_cmd[i-1] + PLANB_DUMMY;
> -		pb->pre_cmd[i] = pb->cap_cmd[i] + pb->tab_size * TAB_FACTOR;
> -	}
> -	pb->frame_stat=(volatile unsigned int *)(pb->pre_cmd[MAX_GBUFFERS-1]
> -						+ PLANB_DUMMY);
> -	pb->mask = (unsigned char *)(pb->frame_stat+MAX_GBUFFERS);
> -
> -	pb->rawbuf = NULL;
> -	pb->rawbuf_size = 0;
> -	pb->grabbing = 0;
> -	for (i = 0; i < MAX_GBUFFERS; i++) {
> -		pb->frame_stat[i] = GBUFFER_UNUSED;
> -		pb->gwidth[i] = 0;
> -		pb->gheight[i] = 0;
> -		pb->gfmt[i] = 0;
> -		pb->gnorm_switch[i] = 0;
> -#ifndef PLANB_GSCANLINE
> -		pb->lsize[i] = 0;
> -		pb->lnum[i] = 0;
> -#endif /* PLANB_GSCANLINE */
> -	}
> -	pb->gcount = 0;
> -	pb->suspend = 0;
> -	pb->last_fr = -999;
> -	pb->prev_last_fr = -999;
> -
> -	/* Reset DMA controllers */
> -	planb_dbdma_stop(&pb->planb_base->ch2);
> -	planb_dbdma_stop(&pb->planb_base->ch1);
> -
> -	return 0;
> -}
> -
> -static void planb_prepare_close(struct planb *pb)
> -{
> -	int i;
> -
> -	/* make sure the dma's are idle */
> -	planb_dbdma_stop(&pb->planb_base->ch2);
> -	planb_dbdma_stop(&pb->planb_base->ch1);
> -	/* free kernel memory of command buffers */
> -	if(pb->priv_space != 0) {
> -		kfree (pb->priv_space);
> -		pb->priv_space = 0;
> -		pb->cmd_buff_inited = 0;
> -	}
> -	if(pb->rawbuf) {
> -		for (i = 0; i < pb->rawbuf_size; i++) {
> -			ClearPageReserved(virt_to_page(pb->rawbuf[i]));
> -			free_pages((unsigned long)pb->rawbuf[i], 0);
> -		}
> -		kfree(pb->rawbuf);
> -	}
> -	pb->rawbuf = NULL;
> -}
> -
> -/*****************************/
> -/* overlay support functions */
> -/*****************************/
> -
> -static inline int overlay_is_active(struct planb *pb)
> -{
> -	unsigned int size = pb->tab_size * sizeof(struct dbdma_cmd);
> -	unsigned int caddr = (unsigned)in_le32(&pb->planb_base->ch1.cmdptr);
> -
> -	return (in_le32(&pb->overlay_last1->cmd_dep) == pb->ch1_cmd_phys)
> -			&& (caddr < (pb->ch1_cmd_phys + size))
> -			&& (caddr >= (unsigned)pb->ch1_cmd_phys);
> -}
> -
> -static void overlay_start(struct planb *pb)
> -{
> -
> -	DEBUG("PlanB: overlay_start()\n");
> -
> -	if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
> -
> -		DEBUG("PlanB: presumably, grabbing is in progress...\n");
> -
> -		planb_dbdma_stop(&pb->planb_base->ch2);
> -		out_le32 (&pb->planb_base->ch2.cmdptr,
> -						virt_to_bus(pb->ch2_cmd));
> -		planb_dbdma_restart(&pb->planb_base->ch2);
> -		st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
> -		tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
> -					DBDMA_NOP | BR_ALWAYS,
> -					virt_to_bus(pb->ch1_cmd));
> -		eieio();
> -		pb->prev_last_fr = pb->last_fr;
> -		pb->last_fr = -2;
> -		if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
> -			IDEBUG("PlanB: became inactive "
> -				"in the mean time... reactivating\n");
> -			planb_dbdma_stop(&pb->planb_base->ch1);
> -			out_le32 (&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->ch1_cmd));
> -			planb_dbdma_restart(&pb->planb_base->ch1);
> -		}
> -	} else {
> -
> -		DEBUG("PlanB: currently idle, so can do whatever\n");
> -
> -		planb_dbdma_stop(&pb->planb_base->ch2);
> -		planb_dbdma_stop(&pb->planb_base->ch1);
> -		st_le32 (&pb->planb_base->ch2.cmdptr,
> -						virt_to_bus(pb->ch2_cmd));
> -		st_le32 (&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->ch1_cmd));
> -		out_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
> -		planb_dbdma_restart(&pb->planb_base->ch2);
> -		planb_dbdma_restart(&pb->planb_base->ch1);
> -		pb->last_fr = -1;
> -	}
> -	return;
> -}
> -
> -static void overlay_stop(struct planb *pb)
> -{
> -	DEBUG("PlanB: overlay_stop()\n");
> -
> -	if(pb->last_fr == -1) {
> -
> -		DEBUG("PlanB: no grabbing, it seems...\n");
> -
> -		planb_dbdma_stop(&pb->planb_base->ch2);
> -		planb_dbdma_stop(&pb->planb_base->ch1);
> -		pb->last_fr = -999;
> -	} else if(pb->last_fr == -2) {
> -		unsigned int cmd_dep;
> -		tab_cmd_dbdma(pb->cap_cmd[pb->prev_last_fr], DBDMA_STOP, 0);
> -		eieio();
> -		cmd_dep = (unsigned int)in_le32(&pb->overlay_last1->cmd_dep);
> -		if(overlay_is_active(pb)) {
> -
> -			DEBUG("PlanB: overlay is currently active\n");
> -
> -			planb_dbdma_stop(&pb->planb_base->ch2);
> -			planb_dbdma_stop(&pb->planb_base->ch1);
> -			if(cmd_dep != pb->ch1_cmd_phys) {
> -				out_le32(&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->overlay_last1));
> -				planb_dbdma_restart(&pb->planb_base->ch1);
> -			}
> -		}
> -		pb->last_fr = pb->prev_last_fr;
> -		pb->prev_last_fr = -999;
> -	}
> -	return;
> -}
> -
> -static void suspend_overlay(struct planb *pb)
> -{
> -	int fr = -1;
> -	struct dbdma_cmd last;
> -
> -	DEBUG("PlanB: suspend_overlay: %d\n", pb->suspend);
> -
> -	if(pb->suspend++)
> -		return;
> -	if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
> -		if(pb->last_fr == -2) {
> -			fr = pb->prev_last_fr;
> -			memcpy(&last, (void*)pb->last_cmd[fr], sizeof(last));
> -			tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
> -		}
> -		if(overlay_is_active(pb)) {
> -			planb_dbdma_stop(&pb->planb_base->ch2);
> -			planb_dbdma_stop(&pb->planb_base->ch1);
> -			pb->suspended.overlay = 1;
> -			pb->suspended.frame = fr;
> -			memcpy(&pb->suspended.cmd, &last, sizeof(last));
> -			return;
> -		}
> -	}
> -	pb->suspended.overlay = 0;
> -	pb->suspended.frame = fr;
> -	memcpy(&pb->suspended.cmd, &last, sizeof(last));
> -	return;
> -}
> -
> -static void resume_overlay(struct planb *pb)
> -{
> -
> -	DEBUG("PlanB: resume_overlay: %d\n", pb->suspend);
> -
> -	if(pb->suspend > 1)
> -		return;
> -	if(pb->suspended.frame != -1) {
> -		memcpy((void*)pb->last_cmd[pb->suspended.frame],
> -				&pb->suspended.cmd, sizeof(pb->suspended.cmd));
> -	}
> -	if(ACTIVE & in_le32(&pb->planb_base->ch1.status)) {
> -		goto finish;
> -	}
> -	if(pb->suspended.overlay) {
> -
> -		DEBUG("PlanB: overlay being resumed\n");
> -
> -		st_le16 (&pb->ch1_cmd->command, DBDMA_NOP);
> -		st_le16 (&pb->ch2_cmd->command, DBDMA_NOP);
> -		/* Set command buffer addresses */
> -		st_le32(&pb->planb_base->ch1.cmdptr,
> -					virt_to_bus(pb->overlay_last1));
> -		out_le32(&pb->planb_base->ch2.cmdptr,
> -					virt_to_bus(pb->overlay_last2));
> -		/* Start the DMA controller */
> -		out_le32 (&pb->planb_base->ch2.control,
> -				PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
> -		out_le32 (&pb->planb_base->ch1.control,
> -				PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
> -	} else if(pb->suspended.frame != -1) {
> -		out_le32(&pb->planb_base->ch1.cmdptr,
> -				virt_to_bus(pb->last_cmd[pb->suspended.frame]));
> -		out_le32 (&pb->planb_base->ch1.control,
> -				PLANB_CLR(PAUSE) | PLANB_SET(RUN|WAKE));
> -	}
> -
> -finish:
> -	pb->suspend--;
> -	wake_up_interruptible(&pb->suspendq);
> -}
> -
> -static void add_clip(struct planb *pb, struct video_clip *clip)
> -{
> -	volatile unsigned char	*base;
> -	int	xc = clip->x, yc = clip->y;
> -	int	wc = clip->width, hc = clip->height;
> -	int	ww = pb->win.width, hw = pb->win.height;
> -	int	x, y, xtmp1, xtmp2;
> -
> -	DEBUG("PlanB: clip %dx%d+%d+%d\n", wc, hc, xc, yc);
> -
> -	if(xc < 0) {
> -		wc += xc;
> -		xc = 0;
> -	}
> -	if(yc < 0) {
> -		hc += yc;
> -		yc = 0;
> -	}
> -	if(xc + wc > ww)
> -		wc = ww - xc;
> -	if(wc <= 0) /* Nothing to do */
> -		return;
> -	if(yc + hc > hw)
> -		hc = hw - yc;
> -
> -	for (y = yc; y < yc+hc; y++) {
> -		xtmp1=xc>>3;
> -		xtmp2=(xc+wc)>>3;
> -		base = pb->mask + y*96;
> -		if(xc != 0 || wc >= 8)
> -			*(base + xtmp1) &= (unsigned char)(0x00ff &
> -				(0xff00 >> (xc&7)));
> -		for (x = xtmp1 + 1; x < xtmp2; x++) {
> -			*(base + x) = 0;
> -		}
> -		if(xc < (ww & ~0x7))
> -			*(base + xtmp2) &= (unsigned char)(0x00ff >>
> -				((xc+wc) & 7));
> -	}
> -
> -	return;
> -}
> -
> -static void fill_cmd_buff(struct planb *pb)
> -{
> -	int restore = 0;
> -	volatile struct dbdma_cmd last;
> -
> -	DEBUG("PlanB: fill_cmd_buff()\n");
> -
> -	if(pb->overlay_last1 != pb->ch1_cmd) {
> -		restore = 1;
> -		last = *(pb->overlay_last1);
> -	}
> -	memset ((void *) pb->ch1_cmd, 0, 2 * pb->tab_size
> -					* sizeof(struct dbdma_cmd));
> -	cmd_buff (pb);
> -	if(restore)
> -		*(pb->overlay_last1) = last;
> -	if(pb->suspended.overlay) {
> -		unsigned long jump_addr = in_le32(&pb->overlay_last1->cmd_dep);
> -		if(jump_addr != pb->ch1_cmd_phys) {
> -			int i;
> -
> -			DEBUG("PlanB: adjusting ch1's jump address\n");
> -
> -			for(i = 0; i < MAX_GBUFFERS; i++) {
> -				if(pb->need_pre_capture[i]) {
> -				    if(jump_addr == virt_to_bus(pb->pre_cmd[i]))
> -					goto found;
> -				} else {
> -				    if(jump_addr == virt_to_bus(pb->cap_cmd[i]))
> -					goto found;
> -				}
> -			}
> -
> -			DEBUG("PlanB: not found...\n");
> -
> -			goto out;
> -found:
> -			if(pb->need_pre_capture[i])
> -				out_le32(&pb->pre_cmd[i]->phy_addr,
> -						virt_to_bus(pb->overlay_last1));
> -			else
> -				out_le32(&pb->cap_cmd[i]->phy_addr,
> -						virt_to_bus(pb->overlay_last1));
> -		}
> -	}
> -out:
> -	pb->cmd_buff_inited = 1;
> -
> -	return;
> -}
> -
> -static void cmd_buff(struct planb *pb)
> -{
> -	int		i, bpp, count, nlines, stepsize, interlace;
> -	unsigned long	base, jump, addr_com, addr_dep;
> -	volatile struct dbdma_cmd *c1 = pb->ch1_cmd;
> -	volatile struct dbdma_cmd *c2 = pb->ch2_cmd;
> -
> -	interlace = pb->win.interlace;
> -	bpp = pb->win.bpp;
> -	count = (bpp * ((pb->win.x + pb->win.width > pb->win.swidth) ?
> -		(pb->win.swidth - pb->win.x) : pb->win.width));
> -	nlines = ((pb->win.y + pb->win.height > pb->win.sheight) ?
> -		(pb->win.sheight - pb->win.y) : pb->win.height);
> -
> -	/* Do video in: */
> -
> -	/* Preamble commands: */
> -	addr_com = virt_to_bus(c1);
> -	addr_dep = virt_to_bus(&c1->cmd_dep);
> -	tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
> -	jump = virt_to_bus(c1+16); /* 14 by cmd_geo_setup() and 2 for padding */
> -	if((c1 = cmd_geo_setup(c1, pb->win.width, pb->win.height, interlace,
> -					bpp, 1, pb)) == NULL) {
> -		printk(KERN_WARNING "PlanB: encountered serious problems\n");
> -		tab_cmd_dbdma(pb->ch1_cmd + 1, DBDMA_STOP, 0);
> -		tab_cmd_dbdma(pb->ch2_cmd + 1, DBDMA_STOP, 0);
> -		return;
> -	}
> -	tab_cmd_store(c1++, addr_com, (unsigned)(DBDMA_NOP | BR_ALWAYS) << 16);
> -	tab_cmd_store(c1++, addr_dep, jump);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
> -							PLANB_SET(FIELD_SYNC));
> -		/* (1) wait for field sync to be set */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -							PLANB_SET(ODD_FIELD));
> -		/* wait for field sync to be cleared */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -		/* if not odd field, wait until field sync is set again */
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
> -		/* assert ch_sync to ch2 */
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
> -							PLANB_SET(CH_SYNC));
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -							PLANB_SET(DMA_ABORT));
> -
> -	base = (pb->frame_buffer_phys + pb->offset + pb->win.y * (pb->win.bpl
> -					+ pb->win.pad) + pb->win.x * bpp);
> -
> -	if (interlace) {
> -		stepsize = 2;
> -		jump = virt_to_bus(c1 + (nlines + 1) / 2);
> -	} else {
> -		stepsize = 1;
> -		jump = virt_to_bus(c1 + nlines);
> -	}
> -
> -	/* even field data: */
> -	for (i=0; i < nlines; i += stepsize, c1++)
> -		tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
> -			count, base + i * (pb->win.bpl + pb->win.pad), jump);
> -
> -	/* For non-interlaced, we use even fields only */
> -	if (!interlace)
> -		goto cmd_tab_data_end;
> -
> -	/* Resync to odd field */
> -		/* (2) wait for field sync to be set */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -							PLANB_SET(ODD_FIELD));
> -		/* wait for field sync to be cleared */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -		/* if not odd field, wait until field sync is set again */
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
> -		/* assert ch_sync to ch2 */
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch2.control),
> -							PLANB_SET(CH_SYNC));
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -							PLANB_SET(DMA_ABORT));
> -
> -	/* odd field data: */
> -	jump = virt_to_bus(c1 + nlines / 2);
> -	for (i=1; i < nlines; i += stepsize, c1++)
> -		tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
> -			base + i * (pb->win.bpl + pb->win.pad), jump);
> -
> -	/* And jump back to the start */
> -cmd_tab_data_end:
> -	pb->overlay_last1 = c1;	/* keep a pointer to the last command */
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch1_cmd));
> -
> -	/* Clipmask command buffer */
> -
> -	/* Preamble commands: */
> -	tab_cmd_dbdma(c2++, DBDMA_NOP, 0);
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
> -							PLANB_SET(CH_SYNC));
> -		/* wait until ch1 asserts ch_sync */
> -	tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
> -		/* clear ch_sync asserted by ch1 */
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.control),
> -							PLANB_CLR(CH_SYNC));
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.wait_sel),
> -							PLANB_SET(FIELD_SYNC));
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
> -							PLANB_SET(ODD_FIELD));
> -
> -	/* jump to end of even field if appropriate */
> -	/* this points to (interlace)? pos. C: pos. B */
> -	jump = (interlace) ? virt_to_bus(c2 + (nlines + 1) / 2 + 2):
> -						virt_to_bus(c2 + nlines + 2);
> -		/* if odd field, skip over to odd field clipmasking */
> -	tab_cmd_dbdma(c2++, DBDMA_NOP | BR_IFSET, jump);
> -
> -	/* even field mask: */
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
> -							PLANB_SET(DMA_ABORT));
> -	/* this points to pos. B */
> -	jump = (interlace) ? virt_to_bus(c2 + nlines + 1):
> -						virt_to_bus(c2 + nlines);
> -	base = virt_to_bus(pb->mask);
> -	for (i=0; i < nlines; i += stepsize, c2++)
> -		tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
> -			base + i * 96, jump);
> -
> -	/* For non-interlaced, we use only even fields */
> -	if(!interlace)
> -		goto cmd_tab_mask_end;
> -
> -	/* odd field mask: */
> -/* C */	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch2.br_sel),
> -							PLANB_SET(DMA_ABORT));
> -	/* this points to pos. B */
> -	jump = virt_to_bus(c2 + nlines / 2);
> -	base = virt_to_bus(pb->mask);
> -	for (i=1; i < nlines; i += 2, c2++)     /* abort if set */
> -		tab_cmd_gen(c2, OUTPUT_MORE | KEY_STREAM0 | BR_IFSET, 96,
> -			base + i * 96, jump);
> -
> -	/* Inform channel 1 and jump back to start */
> -cmd_tab_mask_end:
> -	/* ok, I just realized this is kind of flawed. */
> -	/* this part is reached only after odd field clipmasking. */
> -	/* wanna clean up? */
> -		/* wait for field sync to be set */
> -		/* corresponds to fsync (1) of ch1 */
> -/* B */	tab_cmd_dbdma(c2++, DBDMA_NOP | WAIT_IFCLR, 0);
> -		/* restart ch1, meant to clear any dead bit or something */
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
> -							PLANB_CLR(RUN));
> -	tab_cmd_store(c2++, (unsigned)(&pb->planb_base_phys->ch1.control),
> -							PLANB_SET(RUN));
> -	pb->overlay_last2 = c2;	/* keep a pointer to the last command */
> -		/* start over even field clipmasking */
> -	tab_cmd_dbdma(c2, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->ch2_cmd));
> -
> -	eieio();
> -	return;
> -}
> -
> -/*********************************/
> -/* grabdisplay support functions */
> -/*********************************/
> -
> -static int palette2fmt[] = {
> -       0,
> -       PLANB_GRAY,
> -       0,
> -       0,
> -       0,
> -       PLANB_COLOUR32,
> -       PLANB_COLOUR15,
> -       0,
> -       0,
> -       0,
> -       0,
> -       0,
> -       0,
> -       0,
> -       0,
> -};
> -
> -#define PLANB_PALETTE_MAX 15
> -
> -static int vgrab(struct planb *pb, struct video_mmap *mp)
> -{
> -	unsigned int fr = mp->frame;
> -	unsigned int format;
> -
> -	if(pb->rawbuf==NULL) {
> -		int err;
> -		if((err=grabbuf_alloc(pb)))
> -			return err;
> -	}
> -
> -	IDEBUG("PlanB: grab %d: %dx%d(%u)\n", pb->grabbing,
> -						mp->width, mp->height, fr);
> -
> -	if(pb->grabbing >= MAX_GBUFFERS)
> -		return -ENOBUFS;
> -	if(fr > (MAX_GBUFFERS - 1) || fr < 0)
> -		return -EINVAL;
> -	if(mp->height <= 0 || mp->width <= 0)
> -		return -EINVAL;
> -	if(mp->format < 0 || mp->format >= PLANB_PALETTE_MAX)
> -		return -EINVAL;
> -	if((format = palette2fmt[mp->format]) == 0)
> -		return -EINVAL;
> -	if (mp->height * mp->width * format > PLANB_MAX_FBUF) /* format = bpp */
> -		return -EINVAL;
> -
> -	planb_lock(pb);
> -	if(mp->width != pb->gwidth[fr] || mp->height != pb->gheight[fr] ||
> -			format != pb->gfmt[fr] || (pb->gnorm_switch[fr])) {
> -		int i;
> -#ifndef PLANB_GSCANLINE
> -		unsigned int osize = pb->gwidth[fr] * pb->gheight[fr]
> -								* pb->gfmt[fr];
> -		unsigned int nsize = mp->width * mp->height * format;
> -#endif
> -
> -		IDEBUG("PlanB: gwidth = %d, gheight = %d, mp->format = %u\n",
> -					mp->width, mp->height, mp->format);
> -
> -#ifndef PLANB_GSCANLINE
> -		if(pb->gnorm_switch[fr])
> -			nsize = 0;
> -		if (nsize < osize) {
> -			for(i = pb->gbuf_idx[fr]; osize > 0; i++) {
> -				memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
> -				osize -= PAGE_SIZE;
> -			}
> -		}
> -		for(i = pb->l_fr_addr_idx[fr]; i < pb->l_fr_addr_idx[fr]
> -							+ pb->lnum[fr]; i++)
> -			memset((void *)pb->rawbuf[i], 0, PAGE_SIZE);
> -#else
> -/* XXX TODO */
> -/*
> -		if(pb->gnorm_switch[fr])
> -			memset((void *)pb->gbuffer[fr], 0,
> -					pb->gbytes_per_line * pb->gheight[fr]);
> -		else {
> -			if(mp->
> -			for(i = 0; i < pb->gheight[fr]; i++) {
> -				memset((void *)(pb->gbuffer[fr]
> -					+ pb->gbytes_per_line * i
> -			}
> -		}
> -*/
> -#endif
> -		pb->gwidth[fr] = mp->width;
> -		pb->gheight[fr] = mp->height;
> -		pb->gfmt[fr] = format;
> -		pb->last_cmd[fr] = setup_grab_cmd(fr, pb);
> -		planb_pre_capture(fr, pb->gfmt[fr], pb); /* gfmt = bpp */
> -		pb->need_pre_capture[fr] = 1;
> -		pb->gnorm_switch[fr] = 0;
> -	} else
> -		pb->need_pre_capture[fr] = 0;
> -	pb->frame_stat[fr] = GBUFFER_GRABBING;
> -	if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
> -
> -		IDEBUG("PlanB: ch1 inactive, initiating grabbing\n");
> -
> -		planb_dbdma_stop(&pb->planb_base->ch1);
> -		if(pb->need_pre_capture[fr]) {
> -
> -			IDEBUG("PlanB: padding pre-capture sequence\n");
> -
> -			out_le32 (&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->pre_cmd[fr]));
> -		} else {
> -			tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
> -			tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
> -		/* let's be on the safe side. here is not timing critical. */
> -			tab_cmd_dbdma((pb->cap_cmd[fr] + 1), DBDMA_NOP, 0);
> -			out_le32 (&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->cap_cmd[fr]));
> -		}
> -		planb_dbdma_restart(&pb->planb_base->ch1);
> -		pb->last_fr = fr;
> -	} else {
> -		int i;
> -
> -		IDEBUG("PlanB: ch1 active, grabbing being queued\n");
> -
> -		if((pb->last_fr == -1) || ((pb->last_fr == -2) &&
> -						overlay_is_active(pb))) {
> -
> -			IDEBUG("PlanB: overlay is active, grabbing defered\n");
> -
> -			tab_cmd_dbdma(pb->last_cmd[fr],
> -					DBDMA_NOP | BR_ALWAYS,
> -					virt_to_bus(pb->ch1_cmd));
> -			if(pb->need_pre_capture[fr]) {
> -
> -				IDEBUG("PlanB: padding pre-capture sequence\n");
> -
> -				tab_cmd_store(pb->pre_cmd[fr],
> -				    virt_to_bus(&pb->overlay_last1->cmd_dep),
> -						virt_to_bus(pb->ch1_cmd));
> -				eieio();
> -				out_le32 (&pb->overlay_last1->cmd_dep,
> -						virt_to_bus(pb->pre_cmd[fr]));
> -			} else {
> -				tab_cmd_store(pb->cap_cmd[fr],
> -				    virt_to_bus(&pb->overlay_last1->cmd_dep),
> -						virt_to_bus(pb->ch1_cmd));
> -				tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
> -								DBDMA_NOP, 0);
> -				eieio();
> -				out_le32 (&pb->overlay_last1->cmd_dep,
> -						virt_to_bus(pb->cap_cmd[fr]));
> -			}
> -			for(i = 0; overlay_is_active(pb) && i < 999; i++)
> -				IDEBUG("PlanB: waiting for overlay done\n");
> -			tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
> -			pb->prev_last_fr = fr;
> -			pb->last_fr = -2;
> -		} else if(pb->last_fr == -2) {
> -
> -			IDEBUG("PlanB: mixed mode detected, grabbing"
> -				" will be done before activating overlay\n");
> -
> -			tab_cmd_dbdma(pb->ch1_cmd, DBDMA_NOP, 0);
> -			if(pb->need_pre_capture[fr]) {
> -
> -				IDEBUG("PlanB: padding pre-capture sequence\n");
> -
> -				tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
> -						DBDMA_NOP | BR_ALWAYS,
> -						virt_to_bus(pb->pre_cmd[fr]));
> -				eieio();
> -			} else {
> -				tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
> -				if(pb->gwidth[pb->prev_last_fr] !=
> -								pb->gwidth[fr]
> -					|| pb->gheight[pb->prev_last_fr] !=
> -								pb->gheight[fr]
> -					|| pb->gfmt[pb->prev_last_fr] !=
> -								pb->gfmt[fr])
> -					tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
> -								DBDMA_NOP, 0);
> -				else
> -					tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
> -					    DBDMA_NOP | BR_ALWAYS,
> -					    virt_to_bus(pb->cap_cmd[fr] + 16));
> -				tab_cmd_dbdma(pb->last_cmd[pb->prev_last_fr],
> -						DBDMA_NOP | BR_ALWAYS,
> -						virt_to_bus(pb->cap_cmd[fr]));
> -				eieio();
> -			}
> -			tab_cmd_dbdma(pb->last_cmd[fr],
> -					DBDMA_NOP | BR_ALWAYS,
> -					virt_to_bus(pb->ch1_cmd));
> -			eieio();
> -			pb->prev_last_fr = fr;
> -			pb->last_fr = -2;
> -		} else {
> -
> -			IDEBUG("PlanB: active grabbing session detected\n");
> -
> -			if(pb->need_pre_capture[fr]) {
> -
> -				IDEBUG("PlanB: padding pre-capture sequence\n");
> -
> -				tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
> -						DBDMA_NOP | BR_ALWAYS,
> -						virt_to_bus(pb->pre_cmd[fr]));
> -				eieio();
> -			} else {
> -				tab_cmd_dbdma(pb->last_cmd[fr], DBDMA_STOP, 0);
> -				tab_cmd_dbdma(pb->cap_cmd[fr], DBDMA_NOP, 0);
> -				if(pb->gwidth[pb->last_fr] != pb->gwidth[fr]
> -					|| pb->gheight[pb->last_fr] !=
> -								pb->gheight[fr]
> -					|| pb->gfmt[pb->last_fr] !=
> -								pb->gfmt[fr])
> -					tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
> -								DBDMA_NOP, 0);
> -				else
> -					tab_cmd_dbdma((pb->cap_cmd[fr] + 1),
> -					    DBDMA_NOP | BR_ALWAYS,
> -					    virt_to_bus(pb->cap_cmd[fr] + 16));
> -				tab_cmd_dbdma(pb->last_cmd[pb->last_fr],
> -						DBDMA_NOP | BR_ALWAYS,
> -						virt_to_bus(pb->cap_cmd[fr]));
> -				eieio();
> -			}
> -			pb->last_fr = fr;
> -		}
> -		if(!(ACTIVE & in_le32(&pb->planb_base->ch1.status))) {
> -
> -			IDEBUG("PlanB: became inactive in the mean time..."
> -				"reactivating\n");
> -
> -			planb_dbdma_stop(&pb->planb_base->ch1);
> -			out_le32 (&pb->planb_base->ch1.cmdptr,
> -						virt_to_bus(pb->cap_cmd[fr]));
> -			planb_dbdma_restart(&pb->planb_base->ch1);
> -		}
> -	}
> -	pb->grabbing++;
> -	planb_unlock(pb);
> -
> -	return 0;
> -}
> -
> -static void planb_pre_capture(int fr, int bpp, struct planb *pb)
> -{
> -	volatile struct dbdma_cmd *c1 = pb->pre_cmd[fr];
> -	int interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
> -
> -	tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
> -	if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
> -						bpp, 0, pb)) == NULL) {
> -		printk(KERN_WARNING "PlanB: encountered some problems\n");
> -		tab_cmd_dbdma(pb->pre_cmd[fr] + 1, DBDMA_STOP, 0);
> -		return;
> -	}
> -	/* Sync to even field */
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
> -		PLANB_SET(FIELD_SYNC));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(ODD_FIELD));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(DMA_ABORT));
> -	/* For non-interlaced, we use even fields only */
> -	if (pb->gheight[fr] <= pb->maxlines/2)
> -		goto cmd_tab_data_end;
> -	/* Sync to odd field */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(ODD_FIELD));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(DMA_ABORT));
> -cmd_tab_data_end:
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(pb->cap_cmd[fr]));
> -
> -	eieio();
> -}
> -
> -static volatile struct dbdma_cmd *setup_grab_cmd(int fr, struct planb *pb)
> -{
> -	int		i, bpp, count, nlines, stepsize, interlace;
> -#ifdef PLANB_GSCANLINE
> -	int		scanline;
> -#else
> -	int		nlpp, leftover1;
> -	unsigned long	base;
> -#endif
> -	unsigned long	jump;
> -	int		pagei;
> -	volatile struct dbdma_cmd *c1;
> -	volatile struct dbdma_cmd *jump_addr;
> -
> -	c1 = pb->cap_cmd[fr];
> -	interlace = (pb->gheight[fr] > pb->maxlines/2)? 1: 0;
> -	bpp = pb->gfmt[fr];	/* gfmt = bpp */
> -	count = bpp * pb->gwidth[fr];
> -	nlines = pb->gheight[fr];
> -#ifdef PLANB_GSCANLINE
> -	scanline = pb->gbytes_per_line;
> -#else
> -	pb->lsize[fr] = count;
> -	pb->lnum[fr] = 0;
> -#endif
> -
> -	/* Do video in: */
> -
> -	/* Preamble commands: */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP, 0);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, virt_to_bus(c1 + 16)); c1++;
> -	if((c1 = cmd_geo_setup(c1, pb->gwidth[fr], pb->gheight[fr], interlace,
> -						bpp, 0, pb)) == NULL) {
> -		printk(KERN_WARNING "PlanB: encountered serious problems\n");
> -		tab_cmd_dbdma(pb->cap_cmd[fr] + 1, DBDMA_STOP, 0);
> -		return (pb->cap_cmd[fr] + 2);
> -	}
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.wait_sel),
> -		PLANB_SET(FIELD_SYNC));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(ODD_FIELD));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFSET, virt_to_bus(c1-3)); c1++;
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | INTR_ALWAYS, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(DMA_ABORT));
> -
> -	if (interlace) {
> -		stepsize = 2;
> -		jump_addr = c1 + TAB_FACTOR * (nlines + 1) / 2;
> -	} else {
> -		stepsize = 1;
> -		jump_addr = c1 + TAB_FACTOR * nlines;
> -	}
> -	jump = virt_to_bus(jump_addr);
> -
> -	/* even field data: */
> -
> -	pagei = pb->gbuf_idx[fr];
> -#ifdef PLANB_GSCANLINE
> -	for (i = 0; i < nlines; i += stepsize) {
> -		tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
> -					virt_to_bus(pb->rawbuf[pagei
> -					+ i * scanline / PAGE_SIZE]), jump);
> -	}
> -#else
> -	i = 0;
> -	leftover1 = 0;
> -	do {
> -	    int j;
> -
> -	    base = virt_to_bus(pb->rawbuf[pagei]);
> -	    nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
> -	    for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
> -		tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET,
> -			  count, base + count * j * stepsize + leftover1, jump);
> -	    if(i < nlines) {
> -		int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
> -
> -		if(lov0 == 0)
> -		    leftover1 = 0;
> -		else {
> -		    if(lov0 >= count) {
> -			tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count, base
> -				+ count * nlpp * stepsize + leftover1, jump);
> -		    } else {
> -			pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
> -					+ count * nlpp * stepsize + leftover1;
> -			pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
> -			pb->l_to_next_size[fr][pb->lnum[fr]] = count - lov0;
> -			tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
> -				virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
> -						+ pb->lnum[fr]]), jump);
> -			if(++pb->lnum[fr] > MAX_LNUM)
> -				pb->lnum[fr]--;
> -		    }
> -		    leftover1 = count * stepsize - lov0;
> -		    i += stepsize;
> -		}
> -	    }
> -	    pagei++;
> -	} while(i < nlines);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
> -	c1 = jump_addr;
> -#endif /* PLANB_GSCANLINE */
> -
> -	/* For non-interlaced, we use even fields only */
> -	if (!interlace)
> -		goto cmd_tab_data_end;
> -
> -	/* Sync to odd field */
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFCLR, 0);
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(ODD_FIELD));
> -	tab_cmd_dbdma(c1++, DBDMA_NOP | WAIT_IFSET, 0);
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_IFCLR, virt_to_bus(c1-3)); c1++;
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->ch1.br_sel),
> -		PLANB_SET(DMA_ABORT));
> -
> -	/* odd field data: */
> -	jump_addr = c1 + TAB_FACTOR * nlines / 2;
> -	jump = virt_to_bus(jump_addr);
> -#ifdef PLANB_GSCANLINE
> -	for (i = 1; i < nlines; i += stepsize) {
> -		tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
> -					virt_to_bus(pb->rawbuf[pagei
> -					+ i * scanline / PAGE_SIZE]), jump);
> -	}
> -#else
> -	i = 1;
> -	leftover1 = 0;
> -	pagei = pb->gbuf_idx[fr];
> -	if(nlines <= 1)
> -	    goto skip;
> -	do {
> -	    int j;
> -
> -	    base = virt_to_bus(pb->rawbuf[pagei]);
> -	    nlpp = (PAGE_SIZE - leftover1) / count / stepsize;
> -	    if(leftover1 >= count) {
> -		tab_cmd_gen(c1++, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
> -						base + leftover1 - count, jump);
> -		i += stepsize;
> -	    }
> -	    for(j = 0; j < nlpp && i < nlines; j++, i += stepsize, c1++)
> -		tab_cmd_gen(c1, INPUT_MORE | KEY_STREAM0 | BR_IFSET, count,
> -			base + count * (j * stepsize + 1) + leftover1, jump);
> -	    if(i < nlines) {
> -		int lov0 = PAGE_SIZE - count * nlpp * stepsize - leftover1;
> -
> -		if(lov0 == 0)
> -		    leftover1 = 0;
> -		else {
> -		    if(lov0 > count) {
> -			pb->l_to_addr[fr][pb->lnum[fr]] = pb->rawbuf[pagei]
> -				+ count * (nlpp * stepsize + 1) + leftover1;
> -			pb->l_to_next_idx[fr][pb->lnum[fr]] = pagei + 1;
> -			pb->l_to_next_size[fr][pb->lnum[fr]] = count * stepsize
> -									- lov0;
> -			tab_cmd_gen(c1++, INPUT_MORE | BR_IFSET, count,
> -				virt_to_bus(pb->rawbuf[pb->l_fr_addr_idx[fr]
> -							+ pb->lnum[fr]]), jump);
> -			if(++pb->lnum[fr] > MAX_LNUM)
> -				pb->lnum[fr]--;
> -			i += stepsize;
> -		    }
> -		    leftover1 = count * stepsize - lov0;
> -		}
> -	    }
> -	    pagei++;
> -	} while(i < nlines);
> -skip:
> -	tab_cmd_dbdma(c1, DBDMA_NOP | BR_ALWAYS, jump);
> -	c1 = jump_addr;
> -#endif /* PLANB_GSCANLINE */
> -
> -cmd_tab_data_end:
> -	tab_cmd_store(c1++, (unsigned)(&pb->planb_base_phys->intr_stat),
> -			(fr << 9) | PLANB_FRM_IRQ | PLANB_GEN_IRQ);
> -	/* stop it */
> -	tab_cmd_dbdma(c1, DBDMA_STOP, 0);
> -
> -	eieio();
> -	return c1;
> -}
> -
> -static void planb_irq(int irq, void *dev_id)
> -{
> -	unsigned int stat, astat;
> -	struct planb *pb = (struct planb *)dev_id;
> -
> -	IDEBUG("PlanB: planb_irq()\n");
> -
> -	/* get/clear interrupt status bits */
> -	eieio();
> -	stat = in_le32(&pb->planb_base->intr_stat);
> -	astat = stat & pb->intr_mask;
> -	out_le32(&pb->planb_base->intr_stat, PLANB_FRM_IRQ
> -					& ~astat & stat & ~PLANB_GEN_IRQ);
> -	IDEBUG("PlanB: stat = %X, astat = %X\n", stat, astat);
> -
> -	if(astat & PLANB_FRM_IRQ) {
> -		unsigned int fr = stat >> 9;
> -#ifndef PLANB_GSCANLINE
> -		int i;
> -#endif
> -		IDEBUG("PlanB: PLANB_FRM_IRQ\n");
> -
> -		pb->gcount++;
> -
> -		IDEBUG("PlanB: grab %d: fr = %d, gcount = %d\n",
> -				pb->grabbing, fr, pb->gcount);
> -#ifndef PLANB_GSCANLINE
> -		IDEBUG("PlanB: %d * %d bytes are being copied over\n",
> -				pb->lnum[fr], pb->lsize[fr]);
> -		for(i = 0; i < pb->lnum[fr]; i++) {
> -			int first = pb->lsize[fr] - pb->l_to_next_size[fr][i];
> -
> -			memcpy(pb->l_to_addr[fr][i],
> -				pb->rawbuf[pb->l_fr_addr_idx[fr] + i],
> -				first);
> -			memcpy(pb->rawbuf[pb->l_to_next_idx[fr][i]],
> -				pb->rawbuf[pb->l_fr_addr_idx[fr] + i] + first,
> -						pb->l_to_next_size[fr][i]);
> -		}
> -#endif
> -		pb->frame_stat[fr] = GBUFFER_DONE;
> -		pb->grabbing--;
> -		wake_up_interruptible(&pb->capq);
> -		return;
> -	}
> -	/* incorrect interrupts? */
> -	pb->intr_mask = PLANB_CLR_IRQ;
> -	out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
> -	printk(KERN_ERR "PlanB: IRQ lockup, cleared intrrupts"
> -							" unconditionally\n");
> -}
> -
> -/*******************************
> - * Device Operations functions *
> - *******************************/
> -
> -static int planb_open(struct video_device *dev, int mode)
> -{
> -	struct planb *pb = (struct planb *)dev;
> -
> -	if (pb->user == 0) {
> -		int err;
> -		if((err = planb_prepare_open(pb)) != 0)
> -			return err;
> -	}
> -	pb->user++;
> -
> -	DEBUG("PlanB: device opened\n");
> -	return 0;
> -}
> -
> -static void planb_close(struct video_device *dev)
> -{
> -	struct planb *pb = (struct planb *)dev;
> -
> -	if(pb->user < 1) /* ??? */
> -		return;
> -	planb_lock(pb);
> -	if (pb->user == 1) {
> -		if (pb->overlay) {
> -			planb_dbdma_stop(&pb->planb_base->ch2);
> -			planb_dbdma_stop(&pb->planb_base->ch1);
> -			pb->overlay = 0;
> -		}
> -		planb_prepare_close(pb);
> -	}
> -	pb->user--;
> -	planb_unlock(pb);
> -
> -	DEBUG("PlanB: device closed\n");
> -}
> -
> -static long planb_read(struct video_device *v, char *buf, unsigned long count,
> -				int nonblock)
> -{
> -	DEBUG("planb: read request\n");
> -	return -EINVAL;
> -}
> -
> -static long planb_write(struct video_device *v, const char *buf,
> -				unsigned long count, int nonblock)
> -{
> -	DEBUG("planb: write request\n");
> -	return -EINVAL;
> -}
> -
> -static int planb_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
> -{
> -	struct planb *pb=(struct planb *)dev;
> -
> -	switch (cmd)
> -	{
> -		case VIDIOCGCAP:
> -		{
> -			struct video_capability b;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGCAP\n");
> -
> -			strcpy (b.name, pb->video_dev.name);
> -			b.type = VID_TYPE_OVERLAY | VID_TYPE_CLIPPING |
> -				 VID_TYPE_FRAMERAM | VID_TYPE_SCALES |
> -				 VID_TYPE_CAPTURE;
> -			b.channels = 2;	/* composite & svhs */
> -			b.audios = 0;
> -			b.maxwidth = PLANB_MAXPIXELS;
> -			b.maxheight = PLANB_MAXLINES;
> -			b.minwidth = 32; /* wild guess */
> -			b.minheight = 32;
> -			if (copy_to_user(arg,&b,sizeof(b)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -		case VIDIOCSFBUF:
> -		{
> -			struct video_buffer v;
> -			unsigned short bpp;
> -			unsigned int fmt;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCSFBUF\n");
> -
> -			if (!capable(CAP_SYS_ADMIN)
> -			|| !capable(CAP_SYS_RAWIO))
> -				return -EPERM;
> -			if (copy_from_user(&v, arg,sizeof(v)))
> -				return -EFAULT;
> -			planb_lock(pb);
> -			switch(v.depth) {
> -			case 8:
> -				bpp = 1;
> -				fmt = PLANB_GRAY;
> -				break;
> -			case 15:
> -			case 16:
> -				bpp = 2;
> -				fmt = PLANB_COLOUR15;
> -				break;
> -			case 24:
> -			case 32:
> -				bpp = 4;
> -				fmt = PLANB_COLOUR32;
> -				break;
> -			default:
> -				planb_unlock(pb);
> -				return -EINVAL;
> -			}
> -			if (bpp * v.width > v.bytesperline) {
> -				planb_unlock(pb);
> -				return -EINVAL;
> -			}
> -			pb->win.bpp = bpp;
> -			pb->win.color_fmt = fmt;
> -			pb->frame_buffer_phys = (unsigned long) v.base;
> -			pb->win.sheight = v.height;
> -			pb->win.swidth = v.width;
> -			pb->picture.depth = pb->win.depth = v.depth;
> -			pb->win.bpl = pb->win.bpp * pb->win.swidth;
> -			pb->win.pad = v.bytesperline - pb->win.bpl;
> -
> -			DEBUG("PlanB: Display at %p is %d by %d, bytedepth %d,"
> -				" bpl %d (+ %d)\n", v.base, v.width,v.height,
> -				pb->win.bpp, pb->win.bpl, pb->win.pad);
> -
> -			pb->cmd_buff_inited = 0;
> -			if(pb->overlay) {
> -				suspend_overlay(pb);
> -				fill_cmd_buff(pb);
> -				resume_overlay(pb);
> -			}
> -			planb_unlock(pb);
> -			return 0;
> -		}
> -		case VIDIOCGFBUF:
> -		{
> -			struct video_buffer v;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGFBUF\n");
> -
> -			v.base = (void *)pb->frame_buffer_phys;
> -			v.height = pb->win.sheight;
> -			v.width = pb->win.swidth;
> -			v.depth = pb->win.depth;
> -			v.bytesperline = pb->win.bpl + pb->win.pad;
> -			if (copy_to_user(arg, &v, sizeof(v)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -		case VIDIOCCAPTURE:
> -		{
> -			int i;
> -
> -			if(copy_from_user(&i, arg, sizeof(i)))
> -				return -EFAULT;
> -			if(i==0) {
> -				DEBUG("PlanB: IOCTL VIDIOCCAPTURE Stop\n");
> -
> -				if (!(pb->overlay))
> -					return 0;
> -				planb_lock(pb);
> -				pb->overlay = 0;
> -				overlay_stop(pb);
> -				planb_unlock(pb);
> -			} else {
> -				DEBUG("PlanB: IOCTL VIDIOCCAPTURE Start\n");
> -
> -				if (pb->frame_buffer_phys == 0 ||
> -					  pb->win.width == 0 ||
> -					  pb->win.height == 0)
> -					return -EINVAL;
> -				if (pb->overlay)
> -					return 0;
> -				planb_lock(pb);
> -				pb->overlay = 1;
> -				if(!(pb->cmd_buff_inited))
> -					fill_cmd_buff(pb);
> -				overlay_start(pb);
> -				planb_unlock(pb);
> -			}
> -			return 0;
> -		}
> -		case VIDIOCGCHAN:
> -		{
> -			struct video_channel v;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGCHAN\n");
> -
> -			if(copy_from_user(&v, arg,sizeof(v)))
> -				return -EFAULT;
> -			v.flags = 0;
> -			v.tuners = 0;
> -			v.type = VIDEO_TYPE_CAMERA;
> -			v.norm = pb->win.norm;
> -			switch(v.channel)
> -			{
> -			case 0:
> -				strcpy(v.name,"Composite");
> -				break;
> -			case 1:
> -				strcpy(v.name,"SVHS");
> -				break;
> -			default:
> -				return -EINVAL;
> -				break;
> -			}
> -			if(copy_to_user(arg,&v,sizeof(v)))
> -				return -EFAULT;
> -
> -			return 0;
> -		}
> -		case VIDIOCSCHAN:
> -		{
> -			struct video_channel v;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCSCHAN\n");
> -
> -			if(copy_from_user(&v, arg, sizeof(v)))
> -				return -EFAULT;
> -
> -			if (v.norm != pb->win.norm) {
> -				int i, maxlines;
> -
> -				switch (v.norm)
> -				{
> -				case VIDEO_MODE_PAL:
> -				case VIDEO_MODE_SECAM:
> -					maxlines = PLANB_MAXLINES;
> -					break;
> -				case VIDEO_MODE_NTSC:
> -					maxlines = PLANB_NTSC_MAXLINES;
> -					break;
> -				default:
> -					return -EINVAL;
> -					break;
> -				}
> -				planb_lock(pb);
> -				/* empty the grabbing queue */
> -				wait_event(pb->capq, !pb->grabbing);
> -				pb->maxlines = maxlines;
> -				pb->win.norm = v.norm;
> -				/* Stop overlay if running */
> -				suspend_overlay(pb);
> -				for(i = 0; i < MAX_GBUFFERS; i++)
> -					pb->gnorm_switch[i] = 1;
> -				/* I know it's an overkill, but.... */
> -				fill_cmd_buff(pb);
> -				/* ok, now init it accordingly */
> -				saa_init_regs (pb);
> -				/* restart overlay if it was running */
> -				resume_overlay(pb);
> -				planb_unlock(pb);
> -			}
> -
> -			switch(v.channel)
> -			{
> -			case 0:	/* Composite	*/
> -				saa_set (SAA7196_IOCC,
> -					((saa_regs[pb->win.norm][SAA7196_IOCC] &
> -					  ~7) | 3), pb);
> -				break;
> -			case 1:	/* SVHS		*/
> -				saa_set (SAA7196_IOCC,
> -					((saa_regs[pb->win.norm][SAA7196_IOCC] &
> -					  ~7) | 4), pb);
> -				break;
> -			default:
> -				return -EINVAL;
> -				break;
> -			}
> -
> -			return 0;
> -		}
> -		case VIDIOCGPICT:
> -		{
> -			struct video_picture vp = pb->picture;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGPICT\n");
> -
> -			switch(pb->win.color_fmt) {
> -			case PLANB_GRAY:
> -				vp.palette = VIDEO_PALETTE_GREY;
> -			case PLANB_COLOUR15:
> -				vp.palette = VIDEO_PALETTE_RGB555;
> -				break;
> -			case PLANB_COLOUR32:
> -				vp.palette = VIDEO_PALETTE_RGB32;
> -				break;
> -			default:
> -				vp.palette = 0;
> -				break;
> -			}
> -
> -			if(copy_to_user(arg,&vp,sizeof(vp)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -		case VIDIOCSPICT:
> -		{
> -			struct video_picture vp;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCSPICT\n");
> -
> -			if(copy_from_user(&vp,arg,sizeof(vp)))
> -				return -EFAULT;
> -			pb->picture = vp;
> -			/* Should we do sanity checks here? */
> -			saa_set (SAA7196_BRIG, (unsigned char)
> -			    ((pb->picture.brightness) >> 8), pb);
> -			saa_set (SAA7196_HUEC, (unsigned char)
> -			    ((pb->picture.hue) >> 8) ^ 0x80, pb);
> -			saa_set (SAA7196_CSAT, (unsigned char)
> -			    ((pb->picture.colour) >> 9), pb);
> -			saa_set (SAA7196_CONT, (unsigned char)
> -			    ((pb->picture.contrast) >> 9), pb);
> -
> -			return 0;
> -		}
> -		case VIDIOCSWIN:
> -		{
> -			struct video_window	vw;
> -			struct video_clip	clip;
> -			int 			i;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCSWIN\n");
> -
> -			if(copy_from_user(&vw,arg,sizeof(vw)))
> -				return -EFAULT;
> -
> -			planb_lock(pb);
> -			/* Stop overlay if running */
> -			suspend_overlay(pb);
> -			pb->win.interlace = (vw.height > pb->maxlines/2)? 1: 0;
> -			if (pb->win.x != vw.x ||
> -			    pb->win.y != vw.y ||
> -			    pb->win.width != vw.width ||
> -			    pb->win.height != vw.height ||
> -			    !pb->cmd_buff_inited) {
> -				pb->win.x = vw.x;
> -				pb->win.y = vw.y;
> -				pb->win.width = vw.width;
> -				pb->win.height = vw.height;
> -				fill_cmd_buff(pb);
> -			}
> -			/* Reset clip mask */
> -			memset ((void *) pb->mask, 0xff, (pb->maxlines
> -					* ((PLANB_MAXPIXELS + 7) & ~7)) / 8);
> -			/* Add any clip rects */
> -			for (i = 0; i < vw.clipcount; i++) {
> -				if (copy_from_user(&clip, vw.clips + i,
> -						sizeof(struct video_clip)))
> -					return -EFAULT;
> -				add_clip(pb, &clip);
> -			}
> -			/* restart overlay if it was running */
> -			resume_overlay(pb);
> -			planb_unlock(pb);
> -			return 0;
> -		}
> -		case VIDIOCGWIN:
> -		{
> -			struct video_window vw;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGWIN\n");
> -
> -			vw.x=pb->win.x;
> -			vw.y=pb->win.y;
> -			vw.width=pb->win.width;
> -			vw.height=pb->win.height;
> -			vw.chromakey=0;
> -			vw.flags=0;
> -			if(pb->win.interlace)
> -				vw.flags|=VIDEO_WINDOW_INTERLACE;
> -			if(copy_to_user(arg,&vw,sizeof(vw)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -		case VIDIOCSYNC: {
> -			int i;
> -
> -			IDEBUG("PlanB: IOCTL VIDIOCSYNC\n");
> -
> -			if(copy_from_user((void *)&i,arg,sizeof(int)))
> -				return -EFAULT;
> -
> -			IDEBUG("PlanB: sync to frame %d\n", i);
> -
> -			if(i > (MAX_GBUFFERS - 1) || i < 0)
> -				return -EINVAL;
> -chk_grab:
> -			switch (pb->frame_stat[i]) {
> -			case GBUFFER_UNUSED:
> -				return -EINVAL;
> -			case GBUFFER_GRABBING:
> -				IDEBUG("PlanB: waiting for grab"
> -							" done (%d)\n", i);
> -				interruptible_sleep_on(&pb->capq);
> -				if(signal_pending(current))
> -					return -EINTR;
> -				goto chk_grab;
> -			case GBUFFER_DONE:
> -				pb->frame_stat[i] = GBUFFER_UNUSED;
> -				break;
> -			}
> -			return 0;
> -		}
> -
> -		case VIDIOCMCAPTURE:
> -		{
> -			struct video_mmap vm;
> -			volatile unsigned int status;
> -
> -			IDEBUG("PlanB: IOCTL VIDIOCMCAPTURE\n");
> -
> -			if(copy_from_user((void *) &vm,(void *)arg,sizeof(vm)))
> -				return -EFAULT;
> -			status = pb->frame_stat[vm.frame];
> -			if (status != GBUFFER_UNUSED)
> -				return -EBUSY;
> -
> -			return vgrab(pb, &vm);
> -		}
> -
> -		case VIDIOCGMBUF:
> -		{
> -			int i;
> -			struct video_mbuf vm;
> -
> -			DEBUG("PlanB: IOCTL VIDIOCGMBUF\n");
> -
> -			memset(&vm, 0 , sizeof(vm));
> -			vm.size = PLANB_MAX_FBUF * MAX_GBUFFERS;
> -			vm.frames = MAX_GBUFFERS;
> -			for(i = 0; i<MAX_GBUFFERS; i++)
> -				vm.offsets[i] = PLANB_MAX_FBUF * i;
> -			if(copy_to_user((void *)arg, (void *)&vm, sizeof(vm)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -
> -		case PLANBIOCGSAAREGS:
> -		{
> -			struct planb_saa_regs preg;
> -
> -			DEBUG("PlanB: IOCTL PLANBIOCGSAAREGS\n");
> -
> -			if(copy_from_user(&preg, arg, sizeof(preg)))
> -				return -EFAULT;
> -			if(preg.addr >= SAA7196_NUMREGS)
> -				return -EINVAL;
> -			preg.val = saa_regs[pb->win.norm][preg.addr];
> -			if(copy_to_user((void *)arg, (void *)&preg,
> -								sizeof(preg)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -
> -		case PLANBIOCSSAAREGS:
> -		{
> -			struct planb_saa_regs preg;
> -
> -			DEBUG("PlanB: IOCTL PLANBIOCSSAAREGS\n");
> -
> -			if(copy_from_user(&preg, arg, sizeof(preg)))
> -				return -EFAULT;
> -			if(preg.addr >= SAA7196_NUMREGS)
> -				return -EINVAL;
> -			saa_set (preg.addr, preg.val, pb);
> -			return 0;
> -		}
> -
> -		case PLANBIOCGSTAT:
> -		{
> -			struct planb_stat_regs pstat;
> -
> -			DEBUG("PlanB: IOCTL PLANBIOCGSTAT\n");
> -
> -			pstat.ch1_stat = in_le32(&pb->planb_base->ch1.status);
> -			pstat.ch2_stat = in_le32(&pb->planb_base->ch2.status);
> -			pstat.saa_stat0 = saa_status(0, pb);
> -			pstat.saa_stat1 = saa_status(1, pb);
> -
> -			if(copy_to_user((void *)arg, (void *)&pstat,
> -							sizeof(pstat)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -
> -		case PLANBIOCSMODE: {
> -			int v;
> -
> -			DEBUG("PlanB: IOCTL PLANBIOCSMODE\n");
> -
> -			if(copy_from_user(&v, arg, sizeof(v)))
> -				return -EFAULT;
> -
> -			switch(v)
> -			{
> -			case PLANB_TV_MODE:
> -				saa_set (SAA7196_STDC,
> -					(saa_regs[pb->win.norm][SAA7196_STDC] &
> -					  0x7f), pb);
> -				break;
> -			case PLANB_VTR_MODE:
> -				saa_set (SAA7196_STDC,
> -					(saa_regs[pb->win.norm][SAA7196_STDC] |
> -					  0x80), pb);
> -				break;
> -			default:
> -				return -EINVAL;
> -				break;
> -			}
> -			pb->win.mode = v;
> -			return 0;
> -		}
> -		case PLANBIOCGMODE: {
> -			int v=pb->win.mode;
> -
> -			DEBUG("PlanB: IOCTL PLANBIOCGMODE\n");
> -
> -			if(copy_to_user(arg,&v,sizeof(v)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -#ifdef PLANB_GSCANLINE
> -		case PLANBG_GRAB_BPL: {
> -			int v=pb->gbytes_per_line;
> -
> -			DEBUG("PlanB: IOCTL PLANBG_GRAB_BPL\n");
> -
> -			if(copy_to_user(arg,&v,sizeof(v)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -#endif /* PLANB_GSCANLINE */
> -		case PLANB_INTR_DEBUG: {
> -			int i;
> -
> -			DEBUG("PlanB: IOCTL PLANB_INTR_DEBUG\n");
> -
> -			if(copy_from_user(&i, arg, sizeof(i)))
> -				return -EFAULT;
> -
> -			/* avoid hang ups all together */
> -			for (i = 0; i < MAX_GBUFFERS; i++) {
> -				if(pb->frame_stat[i] == GBUFFER_GRABBING) {
> -					pb->frame_stat[i] = GBUFFER_DONE;
> -				}
> -			}
> -			if(pb->grabbing)
> -				pb->grabbing--;
> -			wake_up_interruptible(&pb->capq);
> -			return 0;
> -		}
> -		case PLANB_INV_REGS: {
> -			int i;
> -			struct planb_any_regs any;
> -
> -			DEBUG("PlanB: IOCTL PLANB_INV_REGS\n");
> -
> -			if(copy_from_user(&any, arg, sizeof(any)))
> -				return -EFAULT;
> -			if(any.offset < 0 || any.offset + any.bytes > 0x400)
> -				return -EINVAL;
> -			if(any.bytes > 128)
> -				return -EINVAL;
> -			for (i = 0; i < any.bytes; i++) {
> -				any.data[i] =
> -					in_8((unsigned char *)pb->planb_base
> -							+ any.offset + i);
> -			}
> -			if(copy_to_user(arg,&any,sizeof(any)))
> -				return -EFAULT;
> -			return 0;
> -		}
> -		default:
> -		{
> -			DEBUG("PlanB: Unimplemented IOCTL\n");
> -			return -ENOIOCTLCMD;
> -		}
> -	/* Some IOCTLs are currently unsupported on PlanB */
> -		case VIDIOCGTUNER: {
> -		DEBUG("PlanB: IOCTL VIDIOCGTUNER\n");
> -			goto unimplemented; }
> -		case VIDIOCSTUNER: {
> -		DEBUG("PlanB: IOCTL VIDIOCSTUNER\n");
> -			goto unimplemented; }
> -		case VIDIOCSFREQ: {
> -		DEBUG("PlanB: IOCTL VIDIOCSFREQ\n");
> -			goto unimplemented; }
> -		case VIDIOCGFREQ: {
> -		DEBUG("PlanB: IOCTL VIDIOCGFREQ\n");
> -			goto unimplemented; }
> -		case VIDIOCKEY: {
> -		DEBUG("PlanB: IOCTL VIDIOCKEY\n");
> -			goto unimplemented; }
> -		case VIDIOCSAUDIO: {
> -		DEBUG("PlanB: IOCTL VIDIOCSAUDIO\n");
> -			goto unimplemented; }
> -		case VIDIOCGAUDIO: {
> -		DEBUG("PlanB: IOCTL VIDIOCGAUDIO\n");
> -			goto unimplemented; }
> -unimplemented:
> -		DEBUG("       Unimplemented\n");
> -			return -ENOIOCTLCMD;
> -	}
> -	return 0;
> -}
> -
> -static int planb_mmap(struct vm_area_struct *vma, struct video_device *dev, const char *adr, unsigned long size)
> -{
> -	int i;
> -	struct planb *pb = (struct planb *)dev;
> -	unsigned long start = (unsigned long)adr;
> -
> -	if (size > MAX_GBUFFERS * PLANB_MAX_FBUF)
> -		return -EINVAL;
> -	if (!pb->rawbuf) {
> -		int err;
> -		if((err=grabbuf_alloc(pb)))
> -			return err;
> -	}
> -	for (i = 0; i < pb->rawbuf_size; i++) {
> -		unsigned long pfn;
> -
> -		pfn = virt_to_phys((void *)pb->rawbuf[i]) >> PAGE_SHIFT;
> -		if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, PAGE_SHARED))
> -			return -EAGAIN;
> -		start += PAGE_SIZE;
> -		if (size <= PAGE_SIZE)
> -			break;
> -		size -= PAGE_SIZE;
> -	}
> -	return 0;
> -}
> -
> -static struct video_device planb_template=
> -{
> -	.owner		= THIS_MODULE,
> -	.name		= PLANB_DEVICE_NAME,
> -	.type		= VID_TYPE_OVERLAY,
> -	.hardware	= VID_HARDWARE_PLANB,
> -	.open		= planb_open,
> -	.close		= planb_close,
> -	.read		= planb_read,
> -	.write		= planb_write,
> -	.ioctl		= planb_ioctl,
> -	.mmap		= planb_mmap,	/* mmap? */
> -};
> -
> -static int init_planb(struct planb *pb)
> -{
> -	unsigned char saa_rev;
> -	int i, result;
> -
> -	memset ((void *) &pb->win, 0, sizeof (struct planb_window));
> -	/* Simple sanity check */
> -	if(def_norm >= NUM_SUPPORTED_NORM || def_norm < 0) {
> -		printk(KERN_ERR "PlanB: Option(s) invalid\n");
> -		return -2;
> -	}
> -	pb->win.norm = def_norm;
> -	pb->win.mode = PLANB_TV_MODE;	/* TV mode */
> -	pb->win.interlace=1;
> -	pb->win.x=0;
> -	pb->win.y=0;
> -	pb->win.width=768; /* 640 */
> -	pb->win.height=576; /* 480 */
> -	pb->maxlines=576;
> -#if 0
> -	btv->win.cropwidth=768; /* 640 */
> -	btv->win.cropheight=576; /* 480 */
> -	btv->win.cropx=0;
> -	btv->win.cropy=0;
> -#endif
> -	pb->win.pad=0;
> -	pb->win.bpp=4;
> -	pb->win.depth=32;
> -	pb->win.color_fmt=PLANB_COLOUR32;
> -	pb->win.bpl=1024*pb->win.bpp;
> -	pb->win.swidth=1024;
> -	pb->win.sheight=768;
> -#ifdef PLANB_GSCANLINE
> -	if((pb->gbytes_per_line = PLANB_MAXPIXELS * 4) > PAGE_SIZE
> -				|| (pb->gbytes_per_line <= 0))
> -		return -3;
> -	else {
> -		/* page align pb->gbytes_per_line for DMA purpose */
> -		for(i = PAGE_SIZE; pb->gbytes_per_line < (i>>1);)
> -			i>>=1;
> -		pb->gbytes_per_line = i;
> -	}
> -#endif
> -	pb->tab_size = PLANB_MAXLINES + 40;
> -	pb->suspend = 0;
> -	mutex_init(&pb->lock);
> -	pb->ch1_cmd = 0;
> -	pb->ch2_cmd = 0;
> -	pb->mask = 0;
> -	pb->priv_space = 0;
> -	pb->offset = 0;
> -	pb->user = 0;
> -	pb->overlay = 0;
> -	init_waitqueue_head(&pb->suspendq);
> -	pb->cmd_buff_inited = 0;
> -	pb->frame_buffer_phys = 0;
> -
> -	/* Reset DMA controllers */
> -	planb_dbdma_stop(&pb->planb_base->ch2);
> -	planb_dbdma_stop(&pb->planb_base->ch1);
> -
> -	saa_rev =  (saa_status(0, pb) & 0xf0) >> 4;
> -	printk(KERN_INFO "PlanB: SAA7196 video processor rev. %d\n", saa_rev);
> -	/* Initialize the SAA registers in memory and on chip */
> -	saa_init_regs (pb);
> -
> -	/* clear interrupt mask */
> -	pb->intr_mask = PLANB_CLR_IRQ;
> -
> -	result = request_irq(pb->irq, planb_irq, 0, "PlanB", (void *)pb);
> -	if (result < 0) {
> -		if (result==-EINVAL)
> -			printk(KERN_ERR "PlanB: Bad irq number (%d) "
> -						"or handler\n", (int)pb->irq);
> -		else if (result==-EBUSY)
> -			printk(KERN_ERR "PlanB: I don't know why, "
> -					"but IRQ %d is busy\n", (int)pb->irq);
> -		return result;
> -	}
> -	disable_irq(pb->irq);
> -
> -	/* Now add the template and register the device unit. */
> -	memcpy(&pb->video_dev,&planb_template,sizeof(planb_template));
> -
> -	pb->picture.brightness=0x90<<8;
> -	pb->picture.contrast = 0x70 << 8;
> -	pb->picture.colour = 0x70<<8;
> -	pb->picture.hue = 0x8000;
> -	pb->picture.whiteness = 0;
> -	pb->picture.depth = pb->win.depth;
> -
> -	pb->frame_stat=NULL;
> -	init_waitqueue_head(&pb->capq);
> -	for(i=0; i<MAX_GBUFFERS; i++) {
> -		pb->gbuf_idx[i] = PLANB_MAX_FBUF * i / PAGE_SIZE;
> -		pb->gwidth[i]=0;
> -		pb->gheight[i]=0;
> -		pb->gfmt[i]=0;
> -		pb->cap_cmd[i]=NULL;
> -#ifndef PLANB_GSCANLINE
> -		pb->l_fr_addr_idx[i] = MAX_GBUFFERS * (PLANB_MAX_FBUF
> -						/ PAGE_SIZE + 1) + MAX_LNUM * i;
> -		pb->lsize[i] = 0;
> -		pb->lnum[i] = 0;
> -#endif
> -	}
> -	pb->rawbuf=NULL;
> -	pb->grabbing=0;
> -
> -	/* enable interrupts */
> -	out_le32(&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
> -	pb->intr_mask = PLANB_FRM_IRQ;
> -	enable_irq(pb->irq);
> -
> -	if(video_register_device(&pb->video_dev, VFL_TYPE_GRABBER, video_nr)<0)
> -		return -1;
> -
> -	return 0;
> -}
> -
> -/*
> - *	Scan for a PlanB controller, request the irq and map the io memory
> - */
> -
> -static int find_planb(void)
> -{
> -	struct planb		*pb;
> -	struct device_node	*planb_devices;
> -	unsigned char		dev_fn, confreg, bus;
> -	unsigned int		old_base, new_base;
> -	unsigned int		irq;
> -	struct pci_dev 		*pdev;
> -	int rc;
> -
> -	if (!machine_is(powermac))
> -		return 0;
> -
> -	planb_devices = find_devices("planb");
> -	if (planb_devices == 0) {
> -		planb_num=0;
> -		printk(KERN_WARNING "PlanB: no device found!\n");
> -		return planb_num;
> -	}
> -
> -	if (planb_devices->next != NULL)
> -		printk(KERN_ERR "Warning: only using first PlanB device!\n");
> -	pb = &planbs[0];
> -	planb_num = 1;
> -
> -	if (planb_devices->n_addrs != 1) {
> -		printk (KERN_WARNING "PlanB: expecting 1 address for planb "
> -			"(got %d)", planb_devices->n_addrs);
> -		return 0;
> -	}
> -
> -	if (planb_devices->n_intrs == 0) {
> -		printk(KERN_WARNING "PlanB: no intrs for device %s\n",
> -		       planb_devices->full_name);
> -		return 0;
> -	} else {
> -		irq = planb_devices->intrs[0].line;
> -	}
> -
> -	/* Initialize PlanB's PCI registers */
> -
> -	/* There is a bug with the way OF assigns addresses
> -	   to the devices behind the chaos bridge.
> -	   control needs only 0x1000 of space, but decodes only
> -	   the upper 16 bits. It therefore occupies a full 64K.
> -	   OF assigns the planb controller memory within this space;
> -	   so we need to change that here in order to access planb. */
> -
> -	/* We remap to 0xf1000000 in hope that nobody uses it ! */
> -
> -	bus = (planb_devices->addrs[0].space >> 16) & 0xff;
> -	dev_fn = (planb_devices->addrs[0].space >> 8) & 0xff;
> -	confreg = planb_devices->addrs[0].space & 0xff;
> -	old_base = planb_devices->addrs[0].address;
> -	new_base = 0xf1000000;
> -
> -	DEBUG("PlanB: Found on bus %d, dev %d, func %d, "
> -		"membase 0x%x (base reg. 0x%x)\n",
> -		bus, PCI_SLOT(dev_fn), PCI_FUNC(dev_fn), old_base, confreg);
> -
> -	pdev = pci_find_slot (bus, dev_fn);
> -	if (!pdev) {
> -		printk(KERN_ERR "planb: cannot find slot\n");
> -		goto err_out;
> -	}
> -
> -	/* Enable response in memory space, bus mastering,
> -	   use memory write and invalidate */
> -	rc = pci_enable_device(pdev);
> -	if (rc) {
> -		printk(KERN_ERR "planb: cannot enable PCI device %s\n",
> -		       pci_name(pdev));
> -		goto err_out;
> -	}
> -	rc = pci_set_mwi(pdev);
> -	if (rc) {
> -		printk(KERN_ERR "planb: cannot enable MWI on PCI device %s\n",
> -		       pci_name(pdev));
> -		goto err_out_disable;
> -	}
> -	pci_set_master(pdev);
> -
> -	/* Set the new base address */
> -	pci_write_config_dword (pdev, confreg, new_base);
> -
> -	planb_regs = (volatile struct planb_registers *)
> -						ioremap (new_base, 0x400);
> -	pb->planb_base = planb_regs;
> -	pb->planb_base_phys = (struct planb_registers *)new_base;
> -	pb->irq	= irq;
> -
> -	return planb_num;
> -
> -err_out_disable:
> -	pci_disable_device(pdev);
> -err_out:
> -	/* FIXME handle error */   /* comment moved from pci_find_slot, above */
> -	return 0;
> -}
> -
> -static void release_planb(void)
> -{
> -	int i;
> -	struct planb *pb;
> -
> -	for (i=0;i<planb_num; i++)
> -	{
> -		pb=&planbs[i];
> -
> -		/* stop and flash DMAs unconditionally */
> -		planb_dbdma_stop(&pb->planb_base->ch2);
> -		planb_dbdma_stop(&pb->planb_base->ch1);
> -
> -		/* clear and free interrupts */
> -		pb->intr_mask = PLANB_CLR_IRQ;
> -		out_le32 (&pb->planb_base->intr_stat, PLANB_CLR_IRQ);
> -		free_irq(pb->irq, pb);
> -
> -		/* make sure all allocated memory are freed */
> -		planb_prepare_close(pb);
> -
> -		printk(KERN_INFO "PlanB: unregistering with v4l\n");
> -		video_unregister_device(&pb->video_dev);
> -
> -		/* note that iounmap() does nothing on the PPC right now */
> -		iounmap ((void *)pb->planb_base);
> -	}
> -}
> -
> -static int __init init_planbs(void)
> -{
> -	int i;
> -
> -	if (find_planb()<=0)
> -		return -EIO;
> -
> -	for (i=0; i<planb_num; i++) {
> -		if (init_planb(&planbs[i])<0) {
> -			printk(KERN_ERR "PlanB: error registering device %d"
> -							" with v4l\n", i);
> -			release_planb();
> -			return -EIO;
> -		}
> -		printk(KERN_INFO "PlanB: registered device %d with v4l\n", i);
> -	}
> -	return 0;
> -}
> -
> -static void __exit exit_planbs(void)
> -{
> -	release_planb();
> -}
> -
> -module_init(init_planbs);
> -module_exit(exit_planbs);