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-rw-r--r--drivers/media/video/pms.c1060
1 files changed, 1060 insertions, 0 deletions
diff --git a/drivers/media/video/pms.c b/drivers/media/video/pms.c
new file mode 100644
index 000000000000..2504207b2e3d
--- /dev/null
+++ b/drivers/media/video/pms.c
@@ -0,0 +1,1060 @@
+/*
+ * Media Vision Pro Movie Studio
+ * or
+ * "all you need is an I2C bus some RAM and a prayer"
+ *
+ * This draws heavily on code
+ *
+ * (c) Wolfgang Koehler, wolf@first.gmd.de, Dec. 1994
+ * Kiefernring 15
+ * 14478 Potsdam, Germany
+ *
+ * Most of this code is directly derived from his userspace driver.
+ * His driver works so send any reports to alan@redhat.com unless the
+ * userspace driver also doesn't work for you...
+ *
+ * Changes:
+ * 08/07/2003 Daniele Bellucci <bellucda@tiscali.it>
+ * - pms_capture: report back -EFAULT
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <linux/sched.h>
+#include <linux/videodev.h>
+#include <asm/uaccess.h>
+
+
+#define MOTOROLA 1
+#define PHILIPS2 2
+#define PHILIPS1 3
+#define MVVMEMORYWIDTH 0x40 /* 512 bytes */
+
+struct pms_device
+{
+ struct video_device v;
+ struct video_picture picture;
+ int height;
+ int width;
+ struct semaphore lock;
+};
+
+struct i2c_info
+{
+ u8 slave;
+ u8 sub;
+ u8 data;
+ u8 hits;
+};
+
+static int i2c_count = 0;
+static struct i2c_info i2cinfo[64];
+
+static int decoder = PHILIPS2;
+static int standard = 0; /* 0 - auto 1 - ntsc 2 - pal 3 - secam */
+
+/*
+ * I/O ports and Shared Memory
+ */
+
+static int io_port = 0x250;
+static int data_port = 0x251;
+static int mem_base = 0xC8000;
+static void __iomem *mem;
+static int video_nr = -1;
+
+
+
+static inline void mvv_write(u8 index, u8 value)
+{
+ outw(index|(value<<8), io_port);
+}
+
+static inline u8 mvv_read(u8 index)
+{
+ outb(index, io_port);
+ return inb(data_port);
+}
+
+static int pms_i2c_stat(u8 slave)
+{
+ int counter;
+ int i;
+
+ outb(0x28, io_port);
+
+ counter=0;
+ while((inb(data_port)&0x01)==0)
+ if(counter++==256)
+ break;
+
+ while((inb(data_port)&0x01)!=0)
+ if(counter++==256)
+ break;
+
+ outb(slave, io_port);
+
+ counter=0;
+ while((inb(data_port)&0x01)==0)
+ if(counter++==256)
+ break;
+
+ while((inb(data_port)&0x01)!=0)
+ if(counter++==256)
+ break;
+
+ for(i=0;i<12;i++)
+ {
+ char st=inb(data_port);
+ if((st&2)!=0)
+ return -1;
+ if((st&1)==0)
+ break;
+ }
+ outb(0x29, io_port);
+ return inb(data_port);
+}
+
+static int pms_i2c_write(u16 slave, u16 sub, u16 data)
+{
+ int skip=0;
+ int count;
+ int i;
+
+ for(i=0;i<i2c_count;i++)
+ {
+ if((i2cinfo[i].slave==slave) &&
+ (i2cinfo[i].sub == sub))
+ {
+ if(i2cinfo[i].data==data)
+ skip=1;
+ i2cinfo[i].data=data;
+ i=i2c_count+1;
+ }
+ }
+
+ if(i==i2c_count && i2c_count<64)
+ {
+ i2cinfo[i2c_count].slave=slave;
+ i2cinfo[i2c_count].sub=sub;
+ i2cinfo[i2c_count].data=data;
+ i2c_count++;
+ }
+
+ if(skip)
+ return 0;
+
+ mvv_write(0x29, sub);
+ mvv_write(0x2A, data);
+ mvv_write(0x28, slave);
+
+ outb(0x28, io_port);
+
+ count=0;
+ while((inb(data_port)&1)==0)
+ if(count>255)
+ break;
+ while((inb(data_port)&1)!=0)
+ if(count>255)
+ break;
+
+ count=inb(data_port);
+
+ if(count&2)
+ return -1;
+ return count;
+}
+
+static int pms_i2c_read(int slave, int sub)
+{
+ int i=0;
+ for(i=0;i<i2c_count;i++)
+ {
+ if(i2cinfo[i].slave==slave && i2cinfo[i].sub==sub)
+ return i2cinfo[i].data;
+ }
+ return 0;
+}
+
+
+static void pms_i2c_andor(int slave, int sub, int and, int or)
+{
+ u8 tmp;
+
+ tmp=pms_i2c_read(slave, sub);
+ tmp = (tmp&and)|or;
+ pms_i2c_write(slave, sub, tmp);
+}
+
+/*
+ * Control functions
+ */
+
+
+static void pms_videosource(short source)
+{
+ mvv_write(0x2E, source?0x31:0x30);
+}
+
+static void pms_hue(short hue)
+{
+ switch(decoder)
+ {
+ case MOTOROLA:
+ pms_i2c_write(0x8A, 0x00, hue);
+ break;
+ case PHILIPS2:
+ pms_i2c_write(0x8A, 0x07, hue);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(0x42, 0x07, hue);
+ break;
+ }
+}
+
+static void pms_colour(short colour)
+{
+ switch(decoder)
+ {
+ case MOTOROLA:
+ pms_i2c_write(0x8A, 0x00, colour);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(0x42, 0x12, colour);
+ break;
+ }
+}
+
+
+static void pms_contrast(short contrast)
+{
+ switch(decoder)
+ {
+ case MOTOROLA:
+ pms_i2c_write(0x8A, 0x00, contrast);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(0x42, 0x13, contrast);
+ break;
+ }
+}
+
+static void pms_brightness(short brightness)
+{
+ switch(decoder)
+ {
+ case MOTOROLA:
+ pms_i2c_write(0x8A, 0x00, brightness);
+ pms_i2c_write(0x8A, 0x00, brightness);
+ pms_i2c_write(0x8A, 0x00, brightness);
+ break;
+ case PHILIPS1:
+ pms_i2c_write(0x42, 0x19, brightness);
+ break;
+ }
+}
+
+
+static void pms_format(short format)
+{
+ int target;
+ standard = format;
+
+ if(decoder==PHILIPS1)
+ target=0x42;
+ else if(decoder==PHILIPS2)
+ target=0x8A;
+ else
+ return;
+
+ switch(format)
+ {
+ case 0: /* Auto */
+ pms_i2c_andor(target, 0x0D, 0xFE,0x00);
+ pms_i2c_andor(target, 0x0F, 0x3F,0x80);
+ break;
+ case 1: /* NTSC */
+ pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
+ pms_i2c_andor(target, 0x0F, 0x3F, 0x40);
+ break;
+ case 2: /* PAL */
+ pms_i2c_andor(target, 0x0D, 0xFE, 0x00);
+ pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
+ break;
+ case 3: /* SECAM */
+ pms_i2c_andor(target, 0x0D, 0xFE, 0x01);
+ pms_i2c_andor(target, 0x0F, 0x3F, 0x00);
+ break;
+ }
+}
+
+#ifdef FOR_FUTURE_EXPANSION
+
+/*
+ * These features of the PMS card are not currently exposes. They
+ * could become a private v4l ioctl for PMSCONFIG or somesuch if
+ * people need it. We also don't yet use the PMS interrupt.
+ */
+
+static void pms_hstart(short start)
+{
+ switch(decoder)
+ {
+ case PHILIPS1:
+ pms_i2c_write(0x8A, 0x05, start);
+ pms_i2c_write(0x8A, 0x18, start);
+ break;
+ case PHILIPS2:
+ pms_i2c_write(0x42, 0x05, start);
+ pms_i2c_write(0x42, 0x18, start);
+ break;
+ }
+}
+
+/*
+ * Bandpass filters
+ */
+
+static void pms_bandpass(short pass)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x06, 0xCF, (pass&0x03)<<4);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x06, 0xCF, (pass&0x03)<<4);
+}
+
+static void pms_antisnow(short snow)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x06, 0xF3, (snow&0x03)<<2);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x06, 0xF3, (snow&0x03)<<2);
+}
+
+static void pms_sharpness(short sharp)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x06, 0xFC, sharp&0x03);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x06, 0xFC, sharp&0x03);
+}
+
+static void pms_chromaagc(short agc)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x0C, 0x9F, (agc&0x03)<<5);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x0C, 0x9F, (agc&0x03)<<5);
+}
+
+static void pms_vertnoise(short noise)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x10, 0xFC, noise&3);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x10, 0xFC, noise&3);
+}
+
+static void pms_forcecolour(short colour)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x0C, 0x7F, (colour&1)<<7);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x0C, 0x7, (colour&1)<<7);
+}
+
+static void pms_antigamma(short gamma)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0xB8, 0x00, 0x7F, (gamma&1)<<7);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x20, 0x7, (gamma&1)<<7);
+}
+
+static void pms_prefilter(short filter)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x06, 0xBF, (filter&1)<<6);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x06, 0xBF, (filter&1)<<6);
+}
+
+static void pms_hfilter(short filter)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0xB8, 0x04, 0x1F, (filter&7)<<5);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x24, 0x1F, (filter&7)<<5);
+}
+
+static void pms_vfilter(short filter)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0xB8, 0x08, 0x9F, (filter&3)<<5);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x28, 0x9F, (filter&3)<<5);
+}
+
+static void pms_killcolour(short colour)
+{
+ if(decoder==PHILIPS2)
+ {
+ pms_i2c_andor(0x8A, 0x08, 0x07, (colour&0x1F)<<3);
+ pms_i2c_andor(0x8A, 0x09, 0x07, (colour&0x1F)<<3);
+ }
+ else if(decoder==PHILIPS1)
+ {
+ pms_i2c_andor(0x42, 0x08, 0x07, (colour&0x1F)<<3);
+ pms_i2c_andor(0x42, 0x09, 0x07, (colour&0x1F)<<3);
+ }
+}
+
+static void pms_chromagain(short chroma)
+{
+ if(decoder==PHILIPS2)
+ {
+ pms_i2c_write(0x8A, 0x11, chroma);
+ }
+ else if(decoder==PHILIPS1)
+ {
+ pms_i2c_write(0x42, 0x11, chroma);
+ }
+}
+
+
+static void pms_spacialcompl(short data)
+{
+ mvv_write(0x3B, data);
+}
+
+static void pms_spacialcomph(short data)
+{
+ mvv_write(0x3A, data);
+}
+
+static void pms_vstart(short start)
+{
+ mvv_write(0x16, start);
+ mvv_write(0x17, (start>>8)&0x01);
+}
+
+#endif
+
+static void pms_secamcross(short cross)
+{
+ if(decoder==PHILIPS2)
+ pms_i2c_andor(0x8A, 0x0F, 0xDF, (cross&1)<<5);
+ else if(decoder==PHILIPS1)
+ pms_i2c_andor(0x42, 0x0F, 0xDF, (cross&1)<<5);
+}
+
+
+static void pms_swsense(short sense)
+{
+ if(decoder==PHILIPS2)
+ {
+ pms_i2c_write(0x8A, 0x0A, sense);
+ pms_i2c_write(0x8A, 0x0B, sense);
+ }
+ else if(decoder==PHILIPS1)
+ {
+ pms_i2c_write(0x42, 0x0A, sense);
+ pms_i2c_write(0x42, 0x0B, sense);
+ }
+}
+
+
+static void pms_framerate(short frr)
+{
+ int fps=(standard==1)?30:25;
+ if(frr==0)
+ return;
+ fps=fps/frr;
+ mvv_write(0x14,0x80|fps);
+ mvv_write(0x15,1);
+}
+
+static void pms_vert(u8 deciden, u8 decinum)
+{
+ mvv_write(0x1C, deciden); /* Denominator */
+ mvv_write(0x1D, decinum); /* Numerator */
+}
+
+/*
+ * Turn 16bit ratios into best small ratio the chipset can grok
+ */
+
+static void pms_vertdeci(unsigned short decinum, unsigned short deciden)
+{
+ /* Knock it down by /5 once */
+ if(decinum%5==0)
+ {
+ deciden/=5;
+ decinum/=5;
+ }
+ /*
+ * 3's
+ */
+ while(decinum%3==0 && deciden%3==0)
+ {
+ deciden/=3;
+ decinum/=3;
+ }
+ /*
+ * 2's
+ */
+ while(decinum%2==0 && deciden%2==0)
+ {
+ decinum/=2;
+ deciden/=2;
+ }
+ /*
+ * Fudgyify
+ */
+ while(deciden>32)
+ {
+ deciden/=2;
+ decinum=(decinum+1)/2;
+ }
+ if(deciden==32)
+ deciden--;
+ pms_vert(deciden,decinum);
+}
+
+static void pms_horzdeci(short decinum, short deciden)
+{
+ 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 int pms_do_ioctl(struct inode *inode, 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;
+ down(&pd->lock);
+ pms_videosource(v->channel&1);
+ pms_vcrinput(v->channel>>1);
+ up(&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;
+ down(&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:
+ up(&pd->lock);
+ return -EINVAL;
+ }
+ up(&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.
+ */
+
+ down(&pd->lock);
+ pms_brightness(p->brightness>>8);
+ pms_hue(p->hue>>8);
+ pms_colour(p->colour>>8);
+ pms_contrast(p->contrast>>8);
+ up(&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;
+ down(&pd->lock);
+ pms_resolution(pd->width, pd->height);
+ up(&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 int pms_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return video_usercopy(inode, 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;
+
+ down(&pd->lock);
+ len=pms_capture(pd, buf, (pd->picture.depth==16)?0:1,count);
+ up(&pd->lock);
+ return len;
+}
+
+static struct file_operations pms_fops = {
+ .owner = THIS_MODULE,
+ .open = video_exclusive_open,
+ .release = video_exclusive_release,
+ .ioctl = pms_ioctl,
+ .read = pms_read,
+ .llseek = no_llseek,
+};
+
+static struct video_device pms_template=
+{
+ .owner = THIS_MODULE,
+ .name = "Mediavision PMS",
+ .type = VID_TYPE_CAPTURE,
+ .hardware = VID_HARDWARE_PMS,
+ .fops = &pms_fops,
+};
+
+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
+ */
+
+static int __init init_pms_cards(void)
+{
+ printk(KERN_INFO "Mediavision Pro Movie Studio driver 0.02\n");
+
+ 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));
+ init_MUTEX(&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);
+
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.