From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- drivers/media/video/pms.c | 1060 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1060 insertions(+) create mode 100644 drivers/media/video/pms.c (limited to 'drivers/media/video/pms.c') diff --git a/drivers/media/video/pms.c b/drivers/media/video/pms.c new file mode 100644 index 00000000000..2504207b2e3 --- /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 + * - pms_capture: report back -EFAULT + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#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;i255) + 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>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); + -- cgit v1.2.3