mirror of
https://github.com/mpv-player/mpv
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c5addf7f7c
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@63 b3059339-0415-0410-9bf9-f77b7e298cf2
646 lines
14 KiB
C
646 lines
14 KiB
C
/*
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*
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* sis_vid.c
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*
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* Copyright (C) 2000 Aaron Holtzman
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*
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* This software has been released under the terms of the GNU Public
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* license. See http://www.gnu.org/copyleft/gpl.html for details.
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*/
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// video4linux interface disabled by A'rpi/ESP-team
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//It's entirely possible this major conflicts with something else
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/* mknod /dev/mga_vid c 178 0 */
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#include <linux/config.h>
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/malloc.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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//#include <linux/videodev.h>
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#include "sis_vid.h"
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#ifdef CONFIG_MTRR
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#include <asm/mtrr.h>
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#endif
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/io.h>
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#define TRUE 1
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#define FALSE 0
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#define MGA_VID_MAJOR 178
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#ifndef PCI_DEVICE_ID_SI_6323
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#define PCI_DEVICE_ID_SI_6323 0x6326
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#endif
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MODULE_AUTHOR("Aaron Holtzman <aholtzma@engr.uvic.ca>");
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typedef struct bes_registers_s
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{
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//base address of yuv framebuffer
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uint32_t yuv_base;
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uint32_t u_base;
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uint32_t v_base;
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uint32_t fb_end;;
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//frame buffer pitch
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uint32_t pitch;
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//window boundaries
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uint32_t left;
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uint32_t right;
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uint32_t top;
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uint32_t bottom;
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//control registers
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uint32_t misc_0;
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uint32_t misc_1;
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uint32_t misc_3;
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uint32_t misc_4;
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//key overlay mode
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uint32_t key_mode;
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} bes_registers_t;
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static bes_registers_t regs;
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static uint32_t mga_vid_in_use = 0;
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static uint32_t vid_src_ready = 0;
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static uint32_t vid_overlay_on = 0;
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static uint8_t *mga_mmio_base = 0;
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static uint32_t mga_mem_base = 0;
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static uint32_t mga_src_base = 0;
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static uint32_t mga_ram_size = 0;
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static struct pci_dev *pci_dev;
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//static struct video_window mga_win;
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static mga_vid_config_t mga_config;
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// Backend Scaler registers
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#define MISC_0 0x98
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#define MISC_1 0x99
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#define MISC_3 0x9d
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#define MISC_4 0xb6
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static void mga_vid_frame_sel(int frame)
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{
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//we don't need the vcount protection as we're only hitting
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//one register (and it doesn't seem to be double buffered)
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//regs.besctl = (regs.besctl & ~0x07000000) + (frame << 25);
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//writel( regs.besctl, mga_mmio_base + BESCTL );
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}
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#define WRITE_REG(x,y,z) {outb((y),(x));outb((z),(x+1));}
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#define READ_REG(x,y) (outb((y),(x)),inb(x+1))
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#define VIDEO_ACCEL 0x3d4
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static void mga_vid_write_regs(void)
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{
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uint32_t foo;
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//unlock the video accel registers
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WRITE_REG(VIDEO_ACCEL,0x80,0x86);
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foo = READ_REG(VIDEO_ACCEL,0x80);
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if(foo != 0xa1)
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return; //something bad happened
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//setup the horizontal window bounds
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WRITE_REG(VIDEO_ACCEL,0x81,regs.left & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x82,regs.right & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x83,(regs.left >> 8) | ((regs.right>>4) & 0x70));
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//setup the vertical window bounds
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WRITE_REG(VIDEO_ACCEL,0x84,regs.top & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x85,regs.bottom & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x86,(regs.top >> 8) | ((regs.bottom>>4) & 0x70));
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//setup the framebuffer base addresses
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WRITE_REG(VIDEO_ACCEL,0x8a,regs.yuv_base & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x8b,(regs.yuv_base >> 8) & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x89,(regs.yuv_base >> 12) & 0xf0);
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WRITE_REG(VIDEO_ACCEL,0xb7,regs.u_base & 0xff);
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WRITE_REG(VIDEO_ACCEL,0xb8,(regs.u_base >> 8) & 0xff);
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WRITE_REG(VIDEO_ACCEL,0xba,regs.v_base & 0xff);
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WRITE_REG(VIDEO_ACCEL,0xbb,(regs.v_base >> 8) & 0xff);
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WRITE_REG(VIDEO_ACCEL,0xb9,((regs.v_base >> 12) & 0xf0) + ((regs.u_base >> 16) & 0xf));
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WRITE_REG(VIDEO_ACCEL,0x8d,regs.fb_end);
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//setup framebuffer pitch
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WRITE_REG(VIDEO_ACCEL,0x8c,regs.pitch & 0xff);
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WRITE_REG(VIDEO_ACCEL,0x8e,(regs.pitch >> 8) & 0x0f);
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WRITE_REG(VIDEO_ACCEL,0xbc,(regs.pitch) & 0xff);
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WRITE_REG(VIDEO_ACCEL,0xbd,((regs.pitch) >> 8) & 0x0f);
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//write key overlay register
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WRITE_REG(VIDEO_ACCEL,0xa9,regs.key_mode);
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WRITE_REG(VIDEO_ACCEL,0x93,0x40);
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WRITE_REG(VIDEO_ACCEL,0x94,1);
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WRITE_REG(VIDEO_ACCEL,0x9e,0);
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WRITE_REG(VIDEO_ACCEL,0x9f,0);
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//write config registers
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WRITE_REG(VIDEO_ACCEL,MISC_0,regs.misc_0);
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WRITE_REG(VIDEO_ACCEL,MISC_1,regs.misc_1);
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WRITE_REG(VIDEO_ACCEL,MISC_3,regs.misc_3);
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WRITE_REG(VIDEO_ACCEL,MISC_4,regs.misc_4);
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//setup the video line buffer
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WRITE_REG(VIDEO_ACCEL,0xa0,(regs.right - regs.left)/ 8);
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}
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static int mga_vid_set_config(mga_vid_config_t *config)
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{
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uint32_t x, y, frame_size;
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x = config->x_org;
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y = config->y_org;
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regs.left = x;
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regs.right= config->src_width + x;
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regs.top = y;
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regs.bottom = config->src_height + y;
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printk(KERN_DEBUG "mga_vid: Setting up a %dx%d+%d+%d video window (src %dx%d)\n",
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config->dest_width, config->dest_height, config->x_org, config->y_org,
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config->src_width, config->src_height);
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regs.pitch = ((config->src_width + 31) & ~31) / 4 ;
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//frame size in pixels
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frame_size = regs.pitch * config->src_height * 4;
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regs.yuv_base = (mga_src_base) >> 2;
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regs.u_base = (mga_src_base + frame_size) >> 2;
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regs.v_base = (mga_src_base + frame_size/4) >> 2;
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regs.fb_end = (mga_src_base + (3*frame_size)/2) >> 14;
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//disable video capture, enable video display, enable graphics display,
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//select yuv format, odd parity
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regs.misc_0 = (1 << 1) + (1<<6) + (1<<4);
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//disable dithering, no filtering, no interrupts
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regs.misc_1 = 0;
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//select 2's complement format YUV for playback
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regs.misc_3 = (1<<1);
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//select 4:2:0 video format, + yuv4:2:2 cpu writes
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regs.misc_4 = (1<<2);
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//disable keying
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regs.key_mode = 0xf;
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mga_vid_write_regs();
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return 0;
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}
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static int mga_vid_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
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{
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int frame;
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switch(cmd)
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{
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case MGA_VID_CONFIG:
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//FIXME remove
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printk(KERN_DEBUG "mga_mmio_base = %p\n",mga_mmio_base);
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printk(KERN_DEBUG "mga_mem_base = %08x\n",mga_mem_base);
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//FIXME remove
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printk(KERN_DEBUG "mga_vid: Received configuration\n");
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if(copy_from_user(&mga_config,(mga_vid_config_t*) arg,sizeof(mga_vid_config_t)))
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{
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printk(KERN_ERR "mga_vid: failed copy from userspace\n");
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return(-EFAULT);
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}
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mga_config.ram_size = mga_ram_size;
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//XXX make it look like a g400
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mga_config.card_type = MGA_G400;;
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if (copy_to_user((mga_vid_config_t *) arg, &mga_config, sizeof(mga_vid_config_t)))
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{
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printk(KERN_ERR "mga_vid: failed copy to userspace\n");
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return(-EFAULT);
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}
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return mga_vid_set_config(&mga_config);
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break;
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case MGA_VID_ON:
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printk(KERN_DEBUG "mga_vid: Video ON\n");
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vid_src_ready = 1;
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if(vid_overlay_on)
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{
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//regs.besctl |= 1;
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mga_vid_write_regs();
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}
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break;
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case MGA_VID_OFF:
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printk(KERN_DEBUG "mga_vid: Video OFF\n");
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vid_src_ready = 0;
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//regs.besctl &= ~1;
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mga_vid_write_regs();
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break;
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case MGA_VID_FSEL:
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if(copy_from_user(&frame,(int *) arg,sizeof(int)))
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{
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printk(KERN_ERR "mga_vid: FSEL failed copy from userspace\n");
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return(-EFAULT);
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}
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mga_vid_frame_sel(frame);
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break;
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default:
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printk(KERN_ERR "mga_vid: Invalid ioctl\n");
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return (-EINVAL);
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}
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return 0;
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}
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static int mga_vid_find_card(void)
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{
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struct pci_dev *dev = NULL;
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if((dev = pci_find_device(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_6323, NULL)))
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{
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printk(KERN_DEBUG "sis_vid: Found SiS 6326\n");
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}
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else
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{
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printk(KERN_ERR "sis_vid: No supported cards found\n");
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return FALSE;
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}
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pci_dev = dev;
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#if LINUX_VERSION_CODE >= 0x020300
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mga_mmio_base = ioremap_nocache(dev->resource[1].start,0x10000);
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mga_mem_base = dev->resource[0].start;
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#else
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mga_mmio_base = ioremap_nocache(dev->base_address[1] & PCI_BASE_ADDRESS_MEM_MASK,0x10000);
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mga_mem_base = dev->base_address[0] & PCI_BASE_ADDRESS_MEM_MASK;
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#endif
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printk(KERN_DEBUG "mga_vid: MMIO at 0x%p\n", mga_mmio_base);
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printk(KERN_DEBUG "mga_vid: Frame Buffer at 0x%08x\n", mga_mem_base);
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//FIXME set ram size properly
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mga_ram_size = 4;
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mga_src_base = (mga_ram_size - 1) * 0x100000;
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//FIXME remove
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if(1)
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{
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mga_vid_config_t config ={0,0,256,256,256,256,10,10,0,0,0,0};
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mga_vid_set_config(&config);
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mga_vid_write_regs();
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//regs.misc_0 ^= 2;
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//mga_vid_write_regs();
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}
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//FIXME remove
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return TRUE;
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}
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static ssize_t mga_vid_read(struct file *file, char *buf, size_t count, loff_t *ppos)
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{
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return -EINVAL;
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}
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static ssize_t mga_vid_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
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{
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return -EINVAL;
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}
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static int mga_vid_mmap(struct file *file, struct vm_area_struct *vma)
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{
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printk(KERN_DEBUG "mga_vid: mapping video memory into userspace\n");
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if(remap_page_range(vma->vm_start, mga_mem_base + mga_src_base,
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vma->vm_end - vma->vm_start, vma->vm_page_prot))
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{
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printk(KERN_ERR "mga_vid: error mapping video memory\n");
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return(-EAGAIN);
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}
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return(0);
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}
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static int mga_vid_release(struct inode *inode, struct file *file)
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{
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//Close the window just in case
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vid_src_ready = 0;
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regs.misc_0 &= 0xed;
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mga_vid_write_regs();
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mga_vid_in_use = 0;
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//FIXME put back in!
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//MOD_DEC_USE_COUNT;
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return 0;
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}
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static long long mga_vid_lseek(struct file *file, long long offset, int origin)
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{
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return -ESPIPE;
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}
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static int mga_vid_open(struct inode *inode, struct file *file)
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{
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int minor = MINOR(inode->i_rdev);
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if(minor != 0)
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return(-ENXIO);
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if(mga_vid_in_use == 1)
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return(-EBUSY);
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mga_vid_in_use = 1;
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//FIXME turn me back on!
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//MOD_INC_USE_COUNT;
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return(0);
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}
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#if LINUX_VERSION_CODE >= 0x020400
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static struct file_operations mga_vid_fops =
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{
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llseek: mga_vid_lseek,
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read: mga_vid_read,
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write: mga_vid_write,
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ioctl: mga_vid_ioctl,
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mmap: mga_vid_mmap,
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open: mga_vid_open,
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release: mga_vid_release
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};
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#else
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static struct file_operations mga_vid_fops =
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{
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mga_vid_lseek,
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mga_vid_read,
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mga_vid_write,
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NULL,
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NULL,
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mga_vid_ioctl,
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mga_vid_mmap,
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mga_vid_open,
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NULL,
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mga_vid_release
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};
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#endif
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#if 0
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static long mga_v4l_read(struct video_device *v, char *buf, unsigned long count,
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int noblock)
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{
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return -EINVAL;
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}
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static long mga_v4l_write(struct video_device *v, const char *buf, unsigned long count, int noblock)
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{
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return -EINVAL;
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}
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static int mga_v4l_open(struct video_device *dev, int mode)
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{
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MOD_INC_USE_COUNT;
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return 0;
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}
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static void mga_v4l_close(struct video_device *dev)
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{
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//regs.besctl &= ~1;
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mga_vid_write_regs();
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vid_overlay_on = 0;
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MOD_DEC_USE_COUNT;
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return;
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}
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static int mga_v4l_init_done(struct video_device *dev)
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{
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return 0;
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}
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static int mga_v4l_ioctl(struct video_device *dev, unsigned int cmd, void *arg)
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{
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switch(cmd)
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{
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case VIDIOCGCAP:
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{
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struct video_capability b;
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strcpy(b.name, "Matrox G200/400");
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b.type = VID_TYPE_SCALES|VID_TYPE_OVERLAY|VID_TYPE_CHROMAKEY;
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b.channels = 0;
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b.audios = 0;
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b.maxwidth = 1024; /* GUESS ?? */
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b.maxheight = 768;
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b.minwidth = 32;
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b.minheight = 16; /* GUESS ?? */
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if(copy_to_user(arg,&b,sizeof(b)))
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return -EFAULT;
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return 0;
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}
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case VIDIOCGPICT:
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{
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/*
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* Default values.. if we can change this we
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* can add the feature later
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*/
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struct video_picture vp;
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vp.brightness = 0x8000;
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vp.hue = 0x8000;
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vp.colour = 0x8000;
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vp.whiteness = 0x8000;
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vp.depth = 8;
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/* Format is a guess */
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vp.palette = VIDEO_PALETTE_YUV420P;
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if(copy_to_user(arg, &vp, sizeof(vp)))
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return -EFAULT;
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return 0;
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}
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case VIDIOCSPICT:
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{
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return -EINVAL;
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}
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case VIDIOCSWIN:
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{
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struct video_window vw;
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if(copy_from_user(&vw, arg, sizeof(vw)))
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return -EFAULT;
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if(vw.x <0 || vw.y <0 || vw.width < 32
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|| vw.height < 16)
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return -EINVAL;
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memcpy(&mga_win, &vw, sizeof(mga_win));
|
|
|
|
mga_config.x_org = vw.x;
|
|
mga_config.y_org = vw.y;
|
|
mga_config.dest_width = vw.width;
|
|
mga_config.dest_height = vw.height;
|
|
|
|
/*
|
|
* May have to add
|
|
*
|
|
* #define VIDEO_WINDOW_CHROMAKEY 16
|
|
*
|
|
* to <linux/videodev.h>
|
|
*/
|
|
|
|
//add it here for now
|
|
#define VIDEO_WINDOW_CHROMAKEY 16
|
|
|
|
if (vw.flags & VIDEO_WINDOW_CHROMAKEY)
|
|
mga_config.colkey_on = 1;
|
|
else
|
|
mga_config.colkey_on = 0;
|
|
|
|
mga_config.colkey_red = (vw.chromakey >> 24) & 0xFF;
|
|
mga_config.colkey_green = (vw.chromakey >> 16) & 0xFF;
|
|
mga_config.colkey_blue = (vw.chromakey >> 8) & 0xFF;
|
|
mga_vid_set_config(&mga_config);
|
|
return 0;
|
|
|
|
}
|
|
case VIDIOCGWIN:
|
|
{
|
|
if(copy_to_user(arg, &mga_win, sizeof(mga_win)))
|
|
return -EFAULT;
|
|
return 0;
|
|
}
|
|
case VIDIOCCAPTURE:
|
|
{
|
|
int v;
|
|
if(copy_from_user(&v, arg, sizeof(v)))
|
|
return -EFAULT;
|
|
vid_overlay_on = v;
|
|
if(vid_overlay_on && vid_src_ready)
|
|
{
|
|
//regs.besctl |= 1;
|
|
mga_vid_write_regs();
|
|
}
|
|
else
|
|
{
|
|
//regs.besctl &= ~1;
|
|
mga_vid_write_regs();
|
|
}
|
|
return 0;
|
|
}
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
|
|
static struct video_device mga_v4l_dev =
|
|
{
|
|
"Matrox G200/G400",
|
|
VID_TYPE_CAPTURE,
|
|
VID_HARDWARE_BT848, /* This is a lie for now */
|
|
mga_v4l_open,
|
|
mga_v4l_close,
|
|
mga_v4l_read,
|
|
mga_v4l_write,
|
|
NULL,
|
|
mga_v4l_ioctl,
|
|
NULL,
|
|
mga_v4l_init_done,
|
|
NULL,
|
|
0,
|
|
0
|
|
};
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Main Initialization Function
|
|
*/
|
|
|
|
|
|
static int mga_vid_initialize(void)
|
|
{
|
|
mga_vid_in_use = 0;
|
|
|
|
printk(KERN_DEBUG "SiS 6326 YUV Video interface v0.01 (c) Aaron Holtzman \n");
|
|
if(register_chrdev(MGA_VID_MAJOR, "mga_vid", &mga_vid_fops))
|
|
{
|
|
printk(KERN_ERR "sis_vid: unable to get major: %d\n", MGA_VID_MAJOR);
|
|
return -EIO;
|
|
}
|
|
|
|
if (!mga_vid_find_card())
|
|
{
|
|
printk(KERN_ERR "sis_vid: no supported devices found\n");
|
|
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
|
|
return -EINVAL;
|
|
}
|
|
|
|
#if 0
|
|
if (video_register_device(&mga_v4l_dev, VFL_TYPE_GRABBER)<0)
|
|
{
|
|
printk("sis_vid: unable to register.\n");
|
|
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
|
|
if(mga_mmio_base)
|
|
iounmap(mga_mmio_base);
|
|
mga_mmio_base = 0;
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
return(0);
|
|
}
|
|
|
|
int init_module(void)
|
|
{
|
|
return mga_vid_initialize();
|
|
}
|
|
|
|
void cleanup_module(void)
|
|
{
|
|
// video_unregister_device(&mga_v4l_dev);
|
|
if(mga_mmio_base)
|
|
iounmap(mga_mmio_base);
|
|
|
|
//FIXME turn off BES
|
|
printk(KERN_DEBUG "mga_vid: Cleaning up module\n");
|
|
unregister_chrdev(MGA_VID_MAJOR, "mga_vid");
|
|
}
|
|
|