mirror of https://gitee.com/openkylin/linux.git
1091 lines
20 KiB
C
1091 lines
20 KiB
C
/*
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* Media Vision Pro Movie Studio
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* or
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* "all you need is an I2C bus some RAM and a prayer"
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*
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* This draws heavily on code
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*
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* (c) Wolfgang Koehler, wolf@first.gmd.de, Dec. 1994
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* Kiefernring 15
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* 14478 Potsdam, Germany
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*
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* Most of this code is directly derived from his userspace driver.
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* His driver works so send any reports to alan@lxorguk.ukuu.org.uk
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* unless the userspace driver also doesn't work for you...
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*
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* Changes:
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* 08/07/2003 Daniele Bellucci <bellucda@tiscali.it>
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* - pms_capture: report back -EFAULT
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*/
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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#include <linux/videodev.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <linux/mutex.h>
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#include <asm/uaccess.h>
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#define MOTOROLA 1
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#define PHILIPS2 2
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#define PHILIPS1 3
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#define MVVMEMORYWIDTH 0x40 /* 512 bytes */
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struct pms_device
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{
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struct video_device v;
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struct video_picture picture;
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int height;
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int width;
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unsigned long in_use;
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struct mutex lock;
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};
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struct i2c_info
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{
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u8 slave;
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u8 sub;
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u8 data;
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u8 hits;
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};
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static int i2c_count;
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static struct i2c_info i2cinfo[64];
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static int decoder = PHILIPS2;
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static int standard; /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
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/*
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* I/O ports and Shared Memory
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*/
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static int io_port = 0x250;
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static int data_port = 0x251;
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static int mem_base = 0xC8000;
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static void __iomem *mem;
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static int video_nr = -1;
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static inline void mvv_write(u8 index, u8 value)
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{
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outw(index|(value<<8), io_port);
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}
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static inline u8 mvv_read(u8 index)
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{
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outb(index, io_port);
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return inb(data_port);
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}
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static int pms_i2c_stat(u8 slave)
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{
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int counter;
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int i;
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outb(0x28, io_port);
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counter=0;
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while((inb(data_port)&0x01)==0)
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if(counter++==256)
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break;
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while((inb(data_port)&0x01)!=0)
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if(counter++==256)
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break;
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outb(slave, io_port);
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counter=0;
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while((inb(data_port)&0x01)==0)
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if(counter++==256)
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break;
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while((inb(data_port)&0x01)!=0)
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if(counter++==256)
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break;
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for(i=0;i<12;i++)
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{
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char st=inb(data_port);
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if((st&2)!=0)
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return -1;
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if((st&1)==0)
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break;
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}
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outb(0x29, io_port);
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return inb(data_port);
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}
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static int pms_i2c_write(u16 slave, u16 sub, u16 data)
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{
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int skip=0;
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int count;
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int i;
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for(i=0;i<i2c_count;i++)
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{
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if((i2cinfo[i].slave==slave) &&
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(i2cinfo[i].sub == sub))
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{
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if(i2cinfo[i].data==data)
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skip=1;
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i2cinfo[i].data=data;
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i=i2c_count+1;
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}
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}
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if(i==i2c_count && i2c_count<64)
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{
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i2cinfo[i2c_count].slave=slave;
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i2cinfo[i2c_count].sub=sub;
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i2cinfo[i2c_count].data=data;
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i2c_count++;
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}
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if(skip)
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return 0;
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mvv_write(0x29, sub);
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mvv_write(0x2A, data);
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mvv_write(0x28, slave);
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outb(0x28, io_port);
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count=0;
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while((inb(data_port)&1)==0)
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if(count>255)
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break;
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while((inb(data_port)&1)!=0)
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if(count>255)
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break;
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count=inb(data_port);
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if(count&2)
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return -1;
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return count;
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}
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static int pms_i2c_read(int slave, int sub)
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{
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int i=0;
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for(i=0;i<i2c_count;i++)
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{
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if(i2cinfo[i].slave==slave && i2cinfo[i].sub==sub)
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return i2cinfo[i].data;
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}
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return 0;
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}
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static void pms_i2c_andor(int slave, int sub, int and, int or)
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{
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u8 tmp;
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tmp=pms_i2c_read(slave, sub);
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tmp = (tmp&and)|or;
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pms_i2c_write(slave, sub, tmp);
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}
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/*
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* Control functions
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*/
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static void pms_videosource(short source)
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{
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mvv_write(0x2E, source?0x31:0x30);
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}
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static void pms_hue(short hue)
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{
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switch(decoder)
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{
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case MOTOROLA:
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pms_i2c_write(0x8A, 0x00, hue);
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break;
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case PHILIPS2:
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pms_i2c_write(0x8A, 0x07, hue);
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break;
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case PHILIPS1:
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pms_i2c_write(0x42, 0x07, hue);
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break;
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}
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}
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static void pms_colour(short colour)
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{
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switch(decoder)
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{
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case MOTOROLA:
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pms_i2c_write(0x8A, 0x00, colour);
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break;
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case PHILIPS1:
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pms_i2c_write(0x42, 0x12, colour);
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break;
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}
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}
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static void pms_contrast(short contrast)
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{
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switch(decoder)
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{
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case MOTOROLA:
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pms_i2c_write(0x8A, 0x00, contrast);
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break;
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case PHILIPS1:
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pms_i2c_write(0x42, 0x13, contrast);
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break;
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}
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}
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static void pms_brightness(short brightness)
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{
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switch(decoder)
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{
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case MOTOROLA:
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pms_i2c_write(0x8A, 0x00, brightness);
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pms_i2c_write(0x8A, 0x00, brightness);
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pms_i2c_write(0x8A, 0x00, brightness);
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break;
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case PHILIPS1:
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pms_i2c_write(0x42, 0x19, brightness);
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break;
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}
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}
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static void pms_format(short format)
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{
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int target;
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standard = format;
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if(decoder==PHILIPS1)
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target=0x42;
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else if(decoder==PHILIPS2)
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target=0x8A;
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else
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return;
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switch(format)
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{
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case 0: /* Auto */
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pms_i2c_andor(target, 0x0D, 0xFE,0x00);
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pms_i2c_andor(target, 0x0F, 0x3F,0x80);
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break;
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case 1: /* NTSC */
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pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
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pms_i2c_andor(target, 0x0F, 0x3F, 0x40);
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break;
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case 2: /* PAL */
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pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
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pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
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break;
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case 3: /* SECAM */
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pms_i2c_andor(target, 0x0D, 0xFE, 0x01);
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pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
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break;
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}
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}
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#ifdef FOR_FUTURE_EXPANSION
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/*
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* These features of the PMS card are not currently exposes. They
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* could become a private v4l ioctl for PMSCONFIG or somesuch if
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* people need it. We also don't yet use the PMS interrupt.
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*/
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static void pms_hstart(short start)
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{
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switch(decoder)
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{
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case PHILIPS1:
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pms_i2c_write(0x8A, 0x05, start);
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pms_i2c_write(0x8A, 0x18, start);
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break;
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case PHILIPS2:
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pms_i2c_write(0x42, 0x05, start);
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pms_i2c_write(0x42, 0x18, start);
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break;
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}
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}
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/*
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* Bandpass filters
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*/
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static void pms_bandpass(short pass)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x06, 0xCF, (pass&0x03)<<4);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x06, 0xCF, (pass&0x03)<<4);
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}
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static void pms_antisnow(short snow)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x06, 0xF3, (snow&0x03)<<2);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x06, 0xF3, (snow&0x03)<<2);
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}
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static void pms_sharpness(short sharp)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x06, 0xFC, sharp&0x03);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x06, 0xFC, sharp&0x03);
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}
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static void pms_chromaagc(short agc)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x0C, 0x9F, (agc&0x03)<<5);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x0C, 0x9F, (agc&0x03)<<5);
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}
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static void pms_vertnoise(short noise)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x10, 0xFC, noise&3);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x10, 0xFC, noise&3);
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}
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static void pms_forcecolour(short colour)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x0C, 0x7F, (colour&1)<<7);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x0C, 0x7, (colour&1)<<7);
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}
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static void pms_antigamma(short gamma)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0xB8, 0x00, 0x7F, (gamma&1)<<7);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x20, 0x7, (gamma&1)<<7);
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}
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static void pms_prefilter(short filter)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x06, 0xBF, (filter&1)<<6);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x06, 0xBF, (filter&1)<<6);
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}
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static void pms_hfilter(short filter)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0xB8, 0x04, 0x1F, (filter&7)<<5);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x24, 0x1F, (filter&7)<<5);
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}
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static void pms_vfilter(short filter)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0xB8, 0x08, 0x9F, (filter&3)<<5);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x28, 0x9F, (filter&3)<<5);
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}
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static void pms_killcolour(short colour)
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{
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if(decoder==PHILIPS2)
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{
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pms_i2c_andor(0x8A, 0x08, 0x07, (colour&0x1F)<<3);
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pms_i2c_andor(0x8A, 0x09, 0x07, (colour&0x1F)<<3);
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}
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else if(decoder==PHILIPS1)
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{
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pms_i2c_andor(0x42, 0x08, 0x07, (colour&0x1F)<<3);
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pms_i2c_andor(0x42, 0x09, 0x07, (colour&0x1F)<<3);
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}
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}
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static void pms_chromagain(short chroma)
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{
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if(decoder==PHILIPS2)
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{
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pms_i2c_write(0x8A, 0x11, chroma);
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}
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else if(decoder==PHILIPS1)
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{
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pms_i2c_write(0x42, 0x11, chroma);
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}
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}
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static void pms_spacialcompl(short data)
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{
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mvv_write(0x3B, data);
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}
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static void pms_spacialcomph(short data)
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{
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mvv_write(0x3A, data);
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}
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static void pms_vstart(short start)
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{
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mvv_write(0x16, start);
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mvv_write(0x17, (start>>8)&0x01);
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}
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#endif
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static void pms_secamcross(short cross)
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{
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if(decoder==PHILIPS2)
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pms_i2c_andor(0x8A, 0x0F, 0xDF, (cross&1)<<5);
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else if(decoder==PHILIPS1)
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pms_i2c_andor(0x42, 0x0F, 0xDF, (cross&1)<<5);
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}
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static void pms_swsense(short sense)
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{
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if(decoder==PHILIPS2)
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{
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pms_i2c_write(0x8A, 0x0A, sense);
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pms_i2c_write(0x8A, 0x0B, sense);
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}
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else if(decoder==PHILIPS1)
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{
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pms_i2c_write(0x42, 0x0A, sense);
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pms_i2c_write(0x42, 0x0B, sense);
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}
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}
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|
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static void pms_framerate(short frr)
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{
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int fps=(standard==1)?30:25;
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if(frr==0)
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return;
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fps=fps/frr;
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mvv_write(0x14,0x80|fps);
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mvv_write(0x15,1);
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}
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static void pms_vert(u8 deciden, u8 decinum)
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{
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mvv_write(0x1C, deciden); /* Denominator */
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mvv_write(0x1D, decinum); /* Numerator */
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}
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/*
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* Turn 16bit ratios into best small ratio the chipset can grok
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*/
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static void pms_vertdeci(unsigned short decinum, unsigned short deciden)
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{
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/* Knock it down by /5 once */
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if(decinum%5==0)
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{
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deciden/=5;
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decinum/=5;
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}
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/*
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* 3's
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*/
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while(decinum%3==0 && deciden%3==0)
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{
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deciden/=3;
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decinum/=3;
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}
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/*
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* 2's
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*/
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while(decinum%2==0 && deciden%2==0)
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{
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decinum/=2;
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deciden/=2;
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}
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/*
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* Fudgyify
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*/
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while(deciden>32)
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{
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deciden/=2;
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decinum=(decinum+1)/2;
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}
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if(deciden==32)
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deciden--;
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pms_vert(deciden,decinum);
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}
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|
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static void pms_horzdeci(short decinum, short deciden)
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{
|
|
if(decinum<=512)
|
|
{
|
|
if(decinum%5==0)
|
|
{
|
|
decinum/=5;
|
|
deciden/=5;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
decinum=512;
|
|
deciden=640; /* 768 would be ideal */
|
|
}
|
|
|
|
while(((decinum|deciden)&1)==0)
|
|
{
|
|
decinum>>=1;
|
|
deciden>>=1;
|
|
}
|
|
while(deciden>32)
|
|
{
|
|
deciden>>=1;
|
|
decinum=(decinum+1)>>1;
|
|
}
|
|
if(deciden==32)
|
|
deciden--;
|
|
|
|
mvv_write(0x24, 0x80|deciden);
|
|
mvv_write(0x25, decinum);
|
|
}
|
|
|
|
static void pms_resolution(short width, short height)
|
|
{
|
|
int fg_height;
|
|
|
|
fg_height=height;
|
|
if(fg_height>280)
|
|
fg_height=280;
|
|
|
|
mvv_write(0x18, fg_height);
|
|
mvv_write(0x19, fg_height>>8);
|
|
|
|
if(standard==1)
|
|
{
|
|
mvv_write(0x1A, 0xFC);
|
|
mvv_write(0x1B, 0x00);
|
|
if(height>fg_height)
|
|
pms_vertdeci(240,240);
|
|
else
|
|
pms_vertdeci(fg_height,240);
|
|
}
|
|
else
|
|
{
|
|
mvv_write(0x1A, 0x1A);
|
|
mvv_write(0x1B, 0x01);
|
|
if(fg_height>256)
|
|
pms_vertdeci(270,270);
|
|
else
|
|
pms_vertdeci(fg_height, 270);
|
|
}
|
|
mvv_write(0x12,0);
|
|
mvv_write(0x13, MVVMEMORYWIDTH);
|
|
mvv_write(0x42, 0x00);
|
|
mvv_write(0x43, 0x00);
|
|
mvv_write(0x44, MVVMEMORYWIDTH);
|
|
|
|
mvv_write(0x22, width+8);
|
|
mvv_write(0x23, (width+8)>> 8);
|
|
|
|
if(standard==1)
|
|
pms_horzdeci(width,640);
|
|
else
|
|
pms_horzdeci(width+8, 768);
|
|
|
|
mvv_write(0x30, mvv_read(0x30)&0xFE);
|
|
mvv_write(0x08, mvv_read(0x08)|0x01);
|
|
mvv_write(0x01, mvv_read(0x01)&0xFD);
|
|
mvv_write(0x32, 0x00);
|
|
mvv_write(0x33, MVVMEMORYWIDTH);
|
|
}
|
|
|
|
|
|
/*
|
|
* Set Input
|
|
*/
|
|
|
|
static void pms_vcrinput(short input)
|
|
{
|
|
if(decoder==PHILIPS2)
|
|
pms_i2c_andor(0x8A,0x0D,0x7F,(input&1)<<7);
|
|
else if(decoder==PHILIPS1)
|
|
pms_i2c_andor(0x42,0x0D,0x7F,(input&1)<<7);
|
|
}
|
|
|
|
|
|
static int pms_capture(struct pms_device *dev, char __user *buf, int rgb555, int count)
|
|
{
|
|
int y;
|
|
int dw = 2*dev->width;
|
|
|
|
char tmp[dw+32]; /* using a temp buffer is faster than direct */
|
|
int cnt = 0;
|
|
int len=0;
|
|
unsigned char r8 = 0x5; /* value for reg8 */
|
|
|
|
if (rgb555)
|
|
r8 |= 0x20; /* else use untranslated rgb = 565 */
|
|
mvv_write(0x08,r8); /* capture rgb555/565, init DRAM, PC enable */
|
|
|
|
/* printf("%d %d %d %d %d %x %x\n",width,height,voff,nom,den,mvv_buf); */
|
|
|
|
for (y = 0; y < dev->height; y++ )
|
|
{
|
|
writeb(0, mem); /* synchronisiert neue Zeile */
|
|
|
|
/*
|
|
* This is in truth a fifo, be very careful as if you
|
|
* forgot this odd things will occur 8)
|
|
*/
|
|
|
|
memcpy_fromio(tmp, mem, dw+32); /* discard 16 word */
|
|
cnt -= dev->height;
|
|
while (cnt <= 0)
|
|
{
|
|
/*
|
|
* Don't copy too far
|
|
*/
|
|
int dt=dw;
|
|
if(dt+len>count)
|
|
dt=count-len;
|
|
cnt += dev->height;
|
|
if (copy_to_user(buf, tmp+32, dt))
|
|
return len ? len : -EFAULT;
|
|
buf += dt;
|
|
len += dt;
|
|
}
|
|
}
|
|
return len;
|
|
}
|
|
|
|
|
|
/*
|
|
* Video4linux interfacing
|
|
*/
|
|
|
|
static long pms_do_ioctl(struct file *file, unsigned int cmd, void *arg)
|
|
{
|
|
struct video_device *dev = video_devdata(file);
|
|
struct pms_device *pd=(struct pms_device *)dev;
|
|
|
|
switch(cmd)
|
|
{
|
|
case VIDIOCGCAP:
|
|
{
|
|
struct video_capability *b = arg;
|
|
strcpy(b->name, "Mediavision PMS");
|
|
b->type = VID_TYPE_CAPTURE|VID_TYPE_SCALES;
|
|
b->channels = 4;
|
|
b->audios = 0;
|
|
b->maxwidth = 640;
|
|
b->maxheight = 480;
|
|
b->minwidth = 16;
|
|
b->minheight = 16;
|
|
return 0;
|
|
}
|
|
case VIDIOCGCHAN:
|
|
{
|
|
struct video_channel *v = arg;
|
|
if(v->channel<0 || v->channel>3)
|
|
return -EINVAL;
|
|
v->flags=0;
|
|
v->tuners=1;
|
|
/* Good question.. its composite or SVHS so.. */
|
|
v->type = VIDEO_TYPE_CAMERA;
|
|
switch(v->channel)
|
|
{
|
|
case 0:
|
|
strcpy(v->name, "Composite");break;
|
|
case 1:
|
|
strcpy(v->name, "SVideo");break;
|
|
case 2:
|
|
strcpy(v->name, "Composite(VCR)");break;
|
|
case 3:
|
|
strcpy(v->name, "SVideo(VCR)");break;
|
|
}
|
|
return 0;
|
|
}
|
|
case VIDIOCSCHAN:
|
|
{
|
|
struct video_channel *v = arg;
|
|
if(v->channel<0 || v->channel>3)
|
|
return -EINVAL;
|
|
mutex_lock(&pd->lock);
|
|
pms_videosource(v->channel&1);
|
|
pms_vcrinput(v->channel>>1);
|
|
mutex_unlock(&pd->lock);
|
|
return 0;
|
|
}
|
|
case VIDIOCGTUNER:
|
|
{
|
|
struct video_tuner *v = arg;
|
|
if(v->tuner)
|
|
return -EINVAL;
|
|
strcpy(v->name, "Format");
|
|
v->rangelow=0;
|
|
v->rangehigh=0;
|
|
v->flags= VIDEO_TUNER_PAL|VIDEO_TUNER_NTSC|VIDEO_TUNER_SECAM;
|
|
switch(standard)
|
|
{
|
|
case 0:
|
|
v->mode = VIDEO_MODE_AUTO;
|
|
break;
|
|
case 1:
|
|
v->mode = VIDEO_MODE_NTSC;
|
|
break;
|
|
case 2:
|
|
v->mode = VIDEO_MODE_PAL;
|
|
break;
|
|
case 3:
|
|
v->mode = VIDEO_MODE_SECAM;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
case VIDIOCSTUNER:
|
|
{
|
|
struct video_tuner *v = arg;
|
|
if(v->tuner)
|
|
return -EINVAL;
|
|
mutex_lock(&pd->lock);
|
|
switch(v->mode)
|
|
{
|
|
case VIDEO_MODE_AUTO:
|
|
pms_framerate(25);
|
|
pms_secamcross(0);
|
|
pms_format(0);
|
|
break;
|
|
case VIDEO_MODE_NTSC:
|
|
pms_framerate(30);
|
|
pms_secamcross(0);
|
|
pms_format(1);
|
|
break;
|
|
case VIDEO_MODE_PAL:
|
|
pms_framerate(25);
|
|
pms_secamcross(0);
|
|
pms_format(2);
|
|
break;
|
|
case VIDEO_MODE_SECAM:
|
|
pms_framerate(25);
|
|
pms_secamcross(1);
|
|
pms_format(2);
|
|
break;
|
|
default:
|
|
mutex_unlock(&pd->lock);
|
|
return -EINVAL;
|
|
}
|
|
mutex_unlock(&pd->lock);
|
|
return 0;
|
|
}
|
|
case VIDIOCGPICT:
|
|
{
|
|
struct video_picture *p = arg;
|
|
*p = pd->picture;
|
|
return 0;
|
|
}
|
|
case VIDIOCSPICT:
|
|
{
|
|
struct video_picture *p = arg;
|
|
if(!((p->palette==VIDEO_PALETTE_RGB565 && p->depth==16)
|
|
||(p->palette==VIDEO_PALETTE_RGB555 && p->depth==15)))
|
|
return -EINVAL;
|
|
pd->picture= *p;
|
|
|
|
/*
|
|
* Now load the card.
|
|
*/
|
|
|
|
mutex_lock(&pd->lock);
|
|
pms_brightness(p->brightness>>8);
|
|
pms_hue(p->hue>>8);
|
|
pms_colour(p->colour>>8);
|
|
pms_contrast(p->contrast>>8);
|
|
mutex_unlock(&pd->lock);
|
|
return 0;
|
|
}
|
|
case VIDIOCSWIN:
|
|
{
|
|
struct video_window *vw = arg;
|
|
if(vw->flags)
|
|
return -EINVAL;
|
|
if(vw->clipcount)
|
|
return -EINVAL;
|
|
if(vw->height<16||vw->height>480)
|
|
return -EINVAL;
|
|
if(vw->width<16||vw->width>640)
|
|
return -EINVAL;
|
|
pd->width=vw->width;
|
|
pd->height=vw->height;
|
|
mutex_lock(&pd->lock);
|
|
pms_resolution(pd->width, pd->height);
|
|
mutex_unlock(&pd->lock); /* Ok we figured out what to use from our wide choice */
|
|
return 0;
|
|
}
|
|
case VIDIOCGWIN:
|
|
{
|
|
struct video_window *vw = arg;
|
|
memset(vw,0,sizeof(*vw));
|
|
vw->width=pd->width;
|
|
vw->height=pd->height;
|
|
return 0;
|
|
}
|
|
case VIDIOCKEY:
|
|
return 0;
|
|
case VIDIOCCAPTURE:
|
|
case VIDIOCGFBUF:
|
|
case VIDIOCSFBUF:
|
|
case VIDIOCGFREQ:
|
|
case VIDIOCSFREQ:
|
|
case VIDIOCGAUDIO:
|
|
case VIDIOCSAUDIO:
|
|
return -EINVAL;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static long pms_ioctl(struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
return video_usercopy(file, cmd, arg, pms_do_ioctl);
|
|
}
|
|
|
|
static ssize_t pms_read(struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct video_device *v = video_devdata(file);
|
|
struct pms_device *pd=(struct pms_device *)v;
|
|
int len;
|
|
|
|
mutex_lock(&pd->lock);
|
|
len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count);
|
|
mutex_unlock(&pd->lock);
|
|
return len;
|
|
}
|
|
|
|
static int pms_exclusive_open(struct file *file)
|
|
{
|
|
struct video_device *v = video_devdata(file);
|
|
struct pms_device *pd = (struct pms_device *)v;
|
|
|
|
return test_and_set_bit(0, &pd->in_use) ? -EBUSY : 0;
|
|
}
|
|
|
|
static int pms_exclusive_release(struct file *file)
|
|
{
|
|
struct video_device *v = video_devdata(file);
|
|
struct pms_device *pd = (struct pms_device *)v;
|
|
|
|
clear_bit(0, &pd->in_use);
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_file_operations pms_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = pms_exclusive_open,
|
|
.release = pms_exclusive_release,
|
|
.ioctl = pms_ioctl,
|
|
.read = pms_read,
|
|
};
|
|
|
|
static struct video_device pms_template=
|
|
{
|
|
.name = "Mediavision PMS",
|
|
.fops = &pms_fops,
|
|
.release = video_device_release_empty,
|
|
};
|
|
|
|
static struct pms_device pms_device;
|
|
|
|
|
|
/*
|
|
* Probe for and initialise the Mediavision PMS
|
|
*/
|
|
|
|
static int init_mediavision(void)
|
|
{
|
|
int id;
|
|
int idec, decst;
|
|
int i;
|
|
|
|
unsigned char i2c_defs[]={
|
|
0x4C,0x30,0x00,0xE8,
|
|
0xB6,0xE2,0x00,0x00,
|
|
0xFF,0xFF,0x00,0x00,
|
|
0x00,0x00,0x78,0x98,
|
|
0x00,0x00,0x00,0x00,
|
|
0x34,0x0A,0xF4,0xCE,
|
|
0xE4
|
|
};
|
|
|
|
mem = ioremap(mem_base, 0x800);
|
|
if (!mem)
|
|
return -ENOMEM;
|
|
|
|
if (!request_region(0x9A01, 1, "Mediavision PMS config"))
|
|
{
|
|
printk(KERN_WARNING "mediavision: unable to detect: 0x9A01 in use.\n");
|
|
iounmap(mem);
|
|
return -EBUSY;
|
|
}
|
|
if (!request_region(io_port, 3, "Mediavision PMS"))
|
|
{
|
|
printk(KERN_WARNING "mediavision: I/O port %d in use.\n", io_port);
|
|
release_region(0x9A01, 1);
|
|
iounmap(mem);
|
|
return -EBUSY;
|
|
}
|
|
outb(0xB8, 0x9A01); /* Unlock */
|
|
outb(io_port>>4, 0x9A01); /* Set IO port */
|
|
|
|
|
|
id=mvv_read(3);
|
|
decst=pms_i2c_stat(0x43);
|
|
|
|
if(decst!=-1)
|
|
idec=2;
|
|
else if(pms_i2c_stat(0xb9)!=-1)
|
|
idec=3;
|
|
else if(pms_i2c_stat(0x8b)!=-1)
|
|
idec=1;
|
|
else
|
|
idec=0;
|
|
|
|
printk(KERN_INFO "PMS type is %d\n", idec);
|
|
if(idec == 0) {
|
|
release_region(io_port, 3);
|
|
release_region(0x9A01, 1);
|
|
iounmap(mem);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Ok we have a PMS of some sort
|
|
*/
|
|
|
|
mvv_write(0x04, mem_base>>12); /* Set the memory area */
|
|
|
|
/* Ok now load the defaults */
|
|
|
|
for(i=0;i<0x19;i++)
|
|
{
|
|
if(i2c_defs[i]==0xFF)
|
|
pms_i2c_andor(0x8A, i, 0x07,0x00);
|
|
else
|
|
pms_i2c_write(0x8A, i, i2c_defs[i]);
|
|
}
|
|
|
|
pms_i2c_write(0xB8,0x00,0x12);
|
|
pms_i2c_write(0xB8,0x04,0x00);
|
|
pms_i2c_write(0xB8,0x07,0x00);
|
|
pms_i2c_write(0xB8,0x08,0x00);
|
|
pms_i2c_write(0xB8,0x09,0xFF);
|
|
pms_i2c_write(0xB8,0x0A,0x00);
|
|
pms_i2c_write(0xB8,0x0B,0x10);
|
|
pms_i2c_write(0xB8,0x10,0x03);
|
|
|
|
mvv_write(0x01, 0x00);
|
|
mvv_write(0x05, 0xA0);
|
|
mvv_write(0x08, 0x25);
|
|
mvv_write(0x09, 0x00);
|
|
mvv_write(0x0A, 0x20|MVVMEMORYWIDTH);
|
|
|
|
mvv_write(0x10, 0x02);
|
|
mvv_write(0x1E, 0x0C);
|
|
mvv_write(0x1F, 0x03);
|
|
mvv_write(0x26, 0x06);
|
|
|
|
mvv_write(0x2B, 0x00);
|
|
mvv_write(0x2C, 0x20);
|
|
mvv_write(0x2D, 0x00);
|
|
mvv_write(0x2F, 0x70);
|
|
mvv_write(0x32, 0x00);
|
|
mvv_write(0x33, MVVMEMORYWIDTH);
|
|
mvv_write(0x34, 0x00);
|
|
mvv_write(0x35, 0x00);
|
|
mvv_write(0x3A, 0x80);
|
|
mvv_write(0x3B, 0x10);
|
|
mvv_write(0x20, 0x00);
|
|
mvv_write(0x21, 0x00);
|
|
mvv_write(0x30, 0x22);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialization and module stuff
|
|
*/
|
|
|
|
#ifndef MODULE
|
|
static int enable;
|
|
module_param(enable, int, 0);
|
|
#endif
|
|
|
|
static int __init init_pms_cards(void)
|
|
{
|
|
printk(KERN_INFO "Mediavision Pro Movie Studio driver 0.02\n");
|
|
|
|
#ifndef MODULE
|
|
if (!enable) {
|
|
printk(KERN_INFO "PMS: not enabled, use pms.enable=1 to "
|
|
"probe\n");
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
data_port = io_port +1;
|
|
|
|
if(init_mediavision())
|
|
{
|
|
printk(KERN_INFO "Board not found.\n");
|
|
return -ENODEV;
|
|
}
|
|
memcpy(&pms_device, &pms_template, sizeof(pms_template));
|
|
mutex_init(&pms_device.lock);
|
|
pms_device.height=240;
|
|
pms_device.width=320;
|
|
pms_swsense(75);
|
|
pms_resolution(320,240);
|
|
return video_register_device((struct video_device *)&pms_device, VFL_TYPE_GRABBER, video_nr);
|
|
}
|
|
|
|
module_param(io_port, int, 0);
|
|
module_param(mem_base, int, 0);
|
|
module_param(video_nr, int, 0);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
static void __exit shutdown_mediavision(void)
|
|
{
|
|
release_region(io_port,3);
|
|
release_region(0x9A01, 1);
|
|
}
|
|
|
|
static void __exit cleanup_pms_module(void)
|
|
{
|
|
shutdown_mediavision();
|
|
video_unregister_device((struct video_device *)&pms_device);
|
|
iounmap(mem);
|
|
}
|
|
|
|
module_init(init_pms_cards);
|
|
module_exit(cleanup_pms_module);
|
|
|