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

From: Benjamin Herrenschmidt
Date: Thu Jan 04 2007 - 16:38:35 EST

Next message: Steve Wise: "Re: [openib-general] [PATCH v4 01/13] Linux RDMA Core Changes"
Previous message: Timo Hoenig: "Re: sonypc with Sony Vaio VGN-SZ1VP"
In reply to: Adrian Bunk: "[RFC: 2.6 patch] remove the broken VIDEO_PLANB driver"
Next in thread: Mich Lanners: "Re: [RFC: 2.6 patch] remove the broken VIDEO_PLANB driver"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

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 <bunk@xxxxxxxxx>

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 (mlan@xxxxxx)
> -
> - 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 (toe@xxxxxxxxxxxxxxx)
> -
> - 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 (mlan@xxxxxx)
> -
> - Based largely on the bttv driver by Ralph Metzler (rjkm@xxxxxxxxxxxxxxxx)
> -
> - Additional debugging and coding by Takashi Oe (toe@xxxxxxxxxxxxxxxx)
> -
> -
> - 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 (mlan@xxxxxx)
> -
> - Based largely on the bttv driver by Ralph Metzler (rjkm@xxxxxxxxxxxxxxxx)
> -
> - Additional debugging and coding by Takashi Oe (toe@xxxxxxxxxxxxxxxx)
> -
> - 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);

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Next message: Steve Wise: "Re: [openib-general] [PATCH v4 01/13] Linux RDMA Core Changes"
Previous message: Timo Hoenig: "Re: sonypc with Sony Vaio VGN-SZ1VP"
In reply to: Adrian Bunk: "[RFC: 2.6 patch] remove the broken VIDEO_PLANB driver"
Next in thread: Mich Lanners: "Re: [RFC: 2.6 patch] remove the broken VIDEO_PLANB driver"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]