Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Virtual Video driver - This code emulates a real video device with v4l2 api |
| 3 | * |
| 4 | * Copyright (c) 2006 by: |
| 5 | * Mauro Carvalho Chehab <mchehab--a.t--infradead.org> |
| 6 | * Ted Walther <ted--a.t--enumera.com> |
| 7 | * John Sokol <sokol--a.t--videotechnology.com> |
| 8 | * http://v4l.videotechnology.com/ |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the BSD Licence, GNU General Public License |
| 12 | * as published by the Free Software Foundation; either version 2 of the |
| 13 | * License, or (at your option) any later version |
| 14 | */ |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/fs.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/mm.h> |
| 22 | #include <linux/ioport.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/sched.h> |
| 25 | #include <linux/pci.h> |
| 26 | #include <linux/random.h> |
| 27 | #include <linux/version.h> |
Matthias Kaehlcke | 51b5402 | 2007-07-02 10:19:38 -0300 | [diff] [blame] | 28 | #include <linux/mutex.h> |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 29 | #include <linux/videodev2.h> |
Andrew Morton | 1095136 | 2006-04-27 10:10:58 -0300 | [diff] [blame] | 30 | #include <linux/dma-mapping.h> |
Mauro Carvalho Chehab | cd41e28 | 2006-04-09 15:43:41 -0300 | [diff] [blame] | 31 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
| 32 | /* Include V4L1 specific functions. Should be removed soon */ |
| 33 | #include <linux/videodev.h> |
| 34 | #endif |
Michael Krufky | f13df91 | 2006-03-23 22:01:44 -0300 | [diff] [blame] | 35 | #include <linux/interrupt.h> |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 36 | #include <media/videobuf-vmalloc.h> |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 37 | #include <media/v4l2-common.h> |
| 38 | #include <linux/kthread.h> |
| 39 | #include <linux/highmem.h> |
Nigel Cunningham | 7dfb710 | 2006-12-06 20:34:23 -0800 | [diff] [blame] | 40 | #include <linux/freezer.h> |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 41 | |
| 42 | /* Wake up at about 30 fps */ |
| 43 | #define WAKE_NUMERATOR 30 |
| 44 | #define WAKE_DENOMINATOR 1001 |
| 45 | #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ |
| 46 | |
| 47 | /* These timers are for 1 fps - used only for testing */ |
| 48 | //#define WAKE_DENOMINATOR 30 /* hack for testing purposes */ |
| 49 | //#define BUFFER_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */ |
| 50 | |
| 51 | #include "font.h" |
| 52 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 53 | #define VIVI_MAJOR_VERSION 0 |
| 54 | #define VIVI_MINOR_VERSION 4 |
| 55 | #define VIVI_RELEASE 0 |
| 56 | #define VIVI_VERSION KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE) |
| 57 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 58 | /* Declare static vars that will be used as parameters */ |
| 59 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ |
| 60 | static struct video_device vivi; /* Video device */ |
| 61 | static int video_nr = -1; /* /dev/videoN, -1 for autodetect */ |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 62 | static int n_devs = 1; /* Number of virtual devices */ |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 63 | |
| 64 | /* supported controls */ |
| 65 | static struct v4l2_queryctrl vivi_qctrl[] = { |
| 66 | { |
| 67 | .id = V4L2_CID_AUDIO_VOLUME, |
| 68 | .name = "Volume", |
| 69 | .minimum = 0, |
| 70 | .maximum = 65535, |
| 71 | .step = 65535/100, |
| 72 | .default_value = 65535, |
| 73 | .flags = 0, |
| 74 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 75 | },{ |
| 76 | .id = V4L2_CID_BRIGHTNESS, |
| 77 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 78 | .name = "Brightness", |
| 79 | .minimum = 0, |
| 80 | .maximum = 255, |
| 81 | .step = 1, |
| 82 | .default_value = 127, |
| 83 | .flags = 0, |
| 84 | }, { |
| 85 | .id = V4L2_CID_CONTRAST, |
| 86 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 87 | .name = "Contrast", |
| 88 | .minimum = 0, |
| 89 | .maximum = 255, |
| 90 | .step = 0x1, |
| 91 | .default_value = 0x10, |
| 92 | .flags = 0, |
| 93 | }, { |
| 94 | .id = V4L2_CID_SATURATION, |
| 95 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 96 | .name = "Saturation", |
| 97 | .minimum = 0, |
| 98 | .maximum = 255, |
| 99 | .step = 0x1, |
| 100 | .default_value = 127, |
| 101 | .flags = 0, |
| 102 | }, { |
| 103 | .id = V4L2_CID_HUE, |
| 104 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 105 | .name = "Hue", |
| 106 | .minimum = -128, |
| 107 | .maximum = 127, |
| 108 | .step = 0x1, |
| 109 | .default_value = 0, |
| 110 | .flags = 0, |
| 111 | } |
| 112 | }; |
| 113 | |
| 114 | static int qctl_regs[ARRAY_SIZE(vivi_qctrl)]; |
| 115 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 116 | #define dprintk(level,fmt, arg...) \ |
| 117 | do { \ |
| 118 | if (vivi.debug >= (level)) \ |
| 119 | printk(KERN_DEBUG "vivi: " fmt , ## arg); \ |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 120 | } while (0) |
| 121 | |
| 122 | /* ------------------------------------------------------------------ |
| 123 | Basic structures |
| 124 | ------------------------------------------------------------------*/ |
| 125 | |
| 126 | struct vivi_fmt { |
| 127 | char *name; |
| 128 | u32 fourcc; /* v4l2 format id */ |
| 129 | int depth; |
| 130 | }; |
| 131 | |
| 132 | static struct vivi_fmt format = { |
| 133 | .name = "4:2:2, packed, YUYV", |
| 134 | .fourcc = V4L2_PIX_FMT_YUYV, |
| 135 | .depth = 16, |
| 136 | }; |
| 137 | |
| 138 | struct sg_to_addr { |
| 139 | int pos; |
| 140 | struct scatterlist *sg; |
| 141 | }; |
| 142 | |
| 143 | /* buffer for one video frame */ |
| 144 | struct vivi_buffer { |
| 145 | /* common v4l buffer stuff -- must be first */ |
| 146 | struct videobuf_buffer vb; |
| 147 | |
| 148 | struct vivi_fmt *fmt; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 149 | }; |
| 150 | |
| 151 | struct vivi_dmaqueue { |
| 152 | struct list_head active; |
| 153 | struct list_head queued; |
| 154 | struct timer_list timeout; |
| 155 | |
| 156 | /* thread for generating video stream*/ |
| 157 | struct task_struct *kthread; |
| 158 | wait_queue_head_t wq; |
| 159 | /* Counters to control fps rate */ |
| 160 | int frame; |
| 161 | int ini_jiffies; |
| 162 | }; |
| 163 | |
| 164 | static LIST_HEAD(vivi_devlist); |
| 165 | |
| 166 | struct vivi_dev { |
| 167 | struct list_head vivi_devlist; |
| 168 | |
Matthias Kaehlcke | 51b5402 | 2007-07-02 10:19:38 -0300 | [diff] [blame] | 169 | struct mutex lock; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 170 | |
| 171 | int users; |
| 172 | |
| 173 | /* various device info */ |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 174 | struct video_device *vfd; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 175 | |
| 176 | struct vivi_dmaqueue vidq; |
| 177 | |
| 178 | /* Several counters */ |
| 179 | int h,m,s,us,jiffies; |
| 180 | char timestr[13]; |
Mauro Carvalho Chehab | 025341d | 2007-12-10 04:43:38 -0300 | [diff] [blame^] | 181 | |
| 182 | int mv_count; /* Controls bars movement */ |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 183 | }; |
| 184 | |
| 185 | struct vivi_fh { |
| 186 | struct vivi_dev *dev; |
| 187 | |
| 188 | /* video capture */ |
| 189 | struct vivi_fmt *fmt; |
| 190 | unsigned int width,height; |
| 191 | struct videobuf_queue vb_vidq; |
| 192 | |
| 193 | enum v4l2_buf_type type; |
| 194 | }; |
| 195 | |
| 196 | /* ------------------------------------------------------------------ |
| 197 | DMA and thread functions |
| 198 | ------------------------------------------------------------------*/ |
| 199 | |
| 200 | /* Bars and Colors should match positions */ |
| 201 | |
| 202 | enum colors { |
| 203 | WHITE, |
| 204 | AMBAR, |
| 205 | CYAN, |
| 206 | GREEN, |
| 207 | MAGENTA, |
| 208 | RED, |
| 209 | BLUE |
| 210 | }; |
| 211 | |
| 212 | static u8 bars[8][3] = { |
| 213 | /* R G B */ |
| 214 | {204,204,204}, /* white */ |
| 215 | {208,208, 0}, /* ambar */ |
| 216 | { 0,206,206}, /* cyan */ |
| 217 | { 0,239, 0}, /* green */ |
| 218 | {239, 0,239}, /* magenta */ |
| 219 | {205, 0, 0}, /* red */ |
| 220 | { 0, 0,255}, /* blue */ |
| 221 | { 0, 0, 0} |
| 222 | }; |
| 223 | |
| 224 | #define TO_Y(r,g,b) (((16829*r +33039*g +6416*b + 32768)>>16)+16) |
| 225 | /* RGB to V(Cr) Color transform */ |
| 226 | #define TO_V(r,g,b) (((28784*r -24103*g -4681*b + 32768)>>16)+128) |
| 227 | /* RGB to U(Cb) Color transform */ |
| 228 | #define TO_U(r,g,b) (((-9714*r -19070*g +28784*b + 32768)>>16)+128) |
| 229 | |
| 230 | #define TSTAMP_MIN_Y 24 |
| 231 | #define TSTAMP_MAX_Y TSTAMP_MIN_Y+15 |
| 232 | #define TSTAMP_MIN_X 64 |
| 233 | |
Mauro Carvalho Chehab | b50e7fe | 2007-01-25 05:00:01 -0300 | [diff] [blame] | 234 | static void gen_line(char *basep,int inipos,int wmax, |
Mauro Carvalho Chehab | 3bef5e4 | 2007-09-22 02:01:33 -0300 | [diff] [blame] | 235 | int hmax, int line, int count, char *timestr) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 236 | { |
Mauro Carvalho Chehab | b50e7fe | 2007-01-25 05:00:01 -0300 | [diff] [blame] | 237 | int w,i,j,pos=inipos,y; |
| 238 | char *p,*s; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 239 | u8 chr,r,g,b,color; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 240 | |
| 241 | /* We will just duplicate the second pixel at the packet */ |
| 242 | wmax/=2; |
| 243 | |
| 244 | /* Generate a standard color bar pattern */ |
| 245 | for (w=0;w<wmax;w++) { |
Mauro Carvalho Chehab | 3bef5e4 | 2007-09-22 02:01:33 -0300 | [diff] [blame] | 246 | int colorpos=((w+count)*8/(wmax+1)) % 8; |
| 247 | r=bars[colorpos][0]; |
| 248 | g=bars[colorpos][1]; |
| 249 | b=bars[colorpos][2]; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 250 | |
| 251 | for (color=0;color<4;color++) { |
Mauro Carvalho Chehab | b50e7fe | 2007-01-25 05:00:01 -0300 | [diff] [blame] | 252 | p=basep+pos; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 253 | |
| 254 | switch (color) { |
| 255 | case 0: |
| 256 | case 2: |
| 257 | *p=TO_Y(r,g,b); /* Luminance */ |
| 258 | break; |
| 259 | case 1: |
| 260 | *p=TO_U(r,g,b); /* Cb */ |
| 261 | break; |
| 262 | case 3: |
| 263 | *p=TO_V(r,g,b); /* Cr */ |
| 264 | break; |
| 265 | } |
| 266 | pos++; |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | /* Checks if it is possible to show timestamp */ |
| 271 | if (TSTAMP_MAX_Y>=hmax) |
| 272 | goto end; |
| 273 | if (TSTAMP_MIN_X+strlen(timestr)>=wmax) |
| 274 | goto end; |
| 275 | |
| 276 | /* Print stream time */ |
| 277 | if (line>=TSTAMP_MIN_Y && line<=TSTAMP_MAX_Y) { |
| 278 | j=TSTAMP_MIN_X; |
| 279 | for (s=timestr;*s;s++) { |
| 280 | chr=rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y]; |
| 281 | for (i=0;i<7;i++) { |
| 282 | if (chr&1<<(7-i)) { /* Font color*/ |
| 283 | r=bars[BLUE][0]; |
| 284 | g=bars[BLUE][1]; |
| 285 | b=bars[BLUE][2]; |
| 286 | r=g=b=0; |
| 287 | g=198; |
| 288 | } else { /* Background color */ |
| 289 | r=bars[WHITE][0]; |
| 290 | g=bars[WHITE][1]; |
| 291 | b=bars[WHITE][2]; |
| 292 | r=g=b=0; |
| 293 | } |
| 294 | |
| 295 | pos=inipos+j*2; |
| 296 | for (color=0;color<4;color++) { |
Mauro Carvalho Chehab | b50e7fe | 2007-01-25 05:00:01 -0300 | [diff] [blame] | 297 | p=basep+pos; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 298 | |
| 299 | y=TO_Y(r,g,b); |
| 300 | |
| 301 | switch (color) { |
| 302 | case 0: |
| 303 | case 2: |
| 304 | *p=TO_Y(r,g,b); /* Luminance */ |
| 305 | break; |
| 306 | case 1: |
| 307 | *p=TO_U(r,g,b); /* Cb */ |
| 308 | break; |
| 309 | case 3: |
| 310 | *p=TO_V(r,g,b); /* Cr */ |
| 311 | break; |
| 312 | } |
| 313 | pos++; |
| 314 | } |
| 315 | j++; |
| 316 | } |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | |
| 321 | end: |
Mauro Carvalho Chehab | b50e7fe | 2007-01-25 05:00:01 -0300 | [diff] [blame] | 322 | return; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 323 | } |
| 324 | static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf) |
| 325 | { |
| 326 | int h,pos=0; |
| 327 | int hmax = buf->vb.height; |
| 328 | int wmax = buf->vb.width; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 329 | struct timeval ts; |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 330 | char *tmpbuf = kmalloc(wmax*2,GFP_KERNEL); |
| 331 | void *vbuf=videobuf_to_vmalloc (&buf->vb); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 332 | |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 333 | if (!tmpbuf) |
| 334 | return; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 335 | |
| 336 | for (h=0;h<hmax;h++) { |
Mauro Carvalho Chehab | 025341d | 2007-12-10 04:43:38 -0300 | [diff] [blame^] | 337 | gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count, |
Mauro Carvalho Chehab | 3bef5e4 | 2007-09-22 02:01:33 -0300 | [diff] [blame] | 338 | dev->timestr); |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 339 | /* FIXME: replacing to __copy_to_user */ |
| 340 | if (copy_to_user(vbuf+pos,tmpbuf,wmax*2)!=0) |
| 341 | dprintk(2,"vivifill copy_to_user failed.\n"); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 342 | pos += wmax*2; |
| 343 | } |
| 344 | |
Mauro Carvalho Chehab | 025341d | 2007-12-10 04:43:38 -0300 | [diff] [blame^] | 345 | dev->mv_count++; |
Mauro Carvalho Chehab | 3bef5e4 | 2007-09-22 02:01:33 -0300 | [diff] [blame] | 346 | |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 347 | kfree(tmpbuf); |
| 348 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 349 | /* Updates stream time */ |
| 350 | |
| 351 | dev->us+=jiffies_to_usecs(jiffies-dev->jiffies); |
| 352 | dev->jiffies=jiffies; |
| 353 | if (dev->us>=1000000) { |
| 354 | dev->us-=1000000; |
| 355 | dev->s++; |
| 356 | if (dev->s>=60) { |
| 357 | dev->s-=60; |
| 358 | dev->m++; |
| 359 | if (dev->m>60) { |
| 360 | dev->m-=60; |
| 361 | dev->h++; |
| 362 | if (dev->h>24) |
| 363 | dev->h-=24; |
| 364 | } |
| 365 | } |
| 366 | } |
| 367 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", |
| 368 | dev->h,dev->m,dev->s,(dev->us+500)/1000); |
| 369 | |
| 370 | dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr, |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 371 | (unsigned long)tmpbuf,pos); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 372 | |
| 373 | /* Advice that buffer was filled */ |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 374 | buf->vb.state = VIDEOBUF_DONE; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 375 | buf->vb.field_count++; |
| 376 | do_gettimeofday(&ts); |
| 377 | buf->vb.ts = ts; |
| 378 | |
| 379 | list_del(&buf->vb.queue); |
| 380 | wake_up(&buf->vb.done); |
| 381 | } |
| 382 | |
| 383 | static int restart_video_queue(struct vivi_dmaqueue *dma_q); |
| 384 | |
| 385 | static void vivi_thread_tick(struct vivi_dmaqueue *dma_q) |
| 386 | { |
| 387 | struct vivi_buffer *buf; |
| 388 | struct vivi_dev *dev= container_of(dma_q,struct vivi_dev,vidq); |
| 389 | |
| 390 | int bc; |
| 391 | |
| 392 | /* Announces videobuf that all went ok */ |
| 393 | for (bc = 0;; bc++) { |
| 394 | if (list_empty(&dma_q->active)) { |
| 395 | dprintk(1,"No active queue to serve\n"); |
| 396 | break; |
| 397 | } |
| 398 | |
| 399 | buf = list_entry(dma_q->active.next, |
| 400 | struct vivi_buffer, vb.queue); |
| 401 | |
| 402 | /* Nobody is waiting something to be done, just return */ |
| 403 | if (!waitqueue_active(&buf->vb.done)) { |
| 404 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
| 405 | return; |
| 406 | } |
| 407 | |
| 408 | do_gettimeofday(&buf->vb.ts); |
| 409 | dprintk(2,"[%p/%d] wakeup\n",buf,buf->vb.i); |
| 410 | |
| 411 | /* Fill buffer */ |
| 412 | vivi_fillbuff(dev,buf); |
Mauro Carvalho Chehab | 0b60051 | 2007-01-14 08:33:24 -0300 | [diff] [blame] | 413 | |
| 414 | if (list_empty(&dma_q->active)) { |
| 415 | del_timer(&dma_q->timeout); |
| 416 | } else { |
| 417 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
| 418 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 419 | } |
| 420 | if (bc != 1) |
| 421 | dprintk(1,"%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc); |
| 422 | } |
| 423 | |
Adrian Bunk | 972c351 | 2006-04-27 21:06:50 -0300 | [diff] [blame] | 424 | static void vivi_sleep(struct vivi_dmaqueue *dma_q) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 425 | { |
| 426 | int timeout; |
| 427 | DECLARE_WAITQUEUE(wait, current); |
| 428 | |
| 429 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); |
| 430 | |
| 431 | add_wait_queue(&dma_q->wq, &wait); |
| 432 | if (!kthread_should_stop()) { |
| 433 | dma_q->frame++; |
| 434 | |
| 435 | /* Calculate time to wake up */ |
| 436 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; |
| 437 | |
| 438 | if (timeout <= 0) { |
| 439 | int old=dma_q->frame; |
| 440 | dma_q->frame=(jiffies_to_msecs(jiffies-dma_q->ini_jiffies)*WAKE_DENOMINATOR)/(WAKE_NUMERATOR*1000)+1; |
| 441 | |
| 442 | timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; |
| 443 | |
| 444 | dprintk(1,"underrun, losed %d frames. " |
| 445 | "Now, frame is %d. Waking on %d jiffies\n", |
| 446 | dma_q->frame-old,dma_q->frame,timeout); |
| 447 | } else |
| 448 | dprintk(1,"will sleep for %i jiffies\n",timeout); |
| 449 | |
| 450 | vivi_thread_tick(dma_q); |
| 451 | |
| 452 | schedule_timeout_interruptible (timeout); |
| 453 | } |
| 454 | |
| 455 | remove_wait_queue(&dma_q->wq, &wait); |
| 456 | try_to_freeze(); |
| 457 | } |
| 458 | |
Adrian Bunk | 972c351 | 2006-04-27 21:06:50 -0300 | [diff] [blame] | 459 | static int vivi_thread(void *data) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 460 | { |
| 461 | struct vivi_dmaqueue *dma_q=data; |
| 462 | |
| 463 | dprintk(1,"thread started\n"); |
| 464 | |
Mauro Carvalho Chehab | 0b60051 | 2007-01-14 08:33:24 -0300 | [diff] [blame] | 465 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
Rafael J. Wysocki | 8314418 | 2007-07-17 04:03:35 -0700 | [diff] [blame] | 466 | set_freezable(); |
Mauro Carvalho Chehab | 0b60051 | 2007-01-14 08:33:24 -0300 | [diff] [blame] | 467 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 468 | for (;;) { |
| 469 | vivi_sleep(dma_q); |
| 470 | |
| 471 | if (kthread_should_stop()) |
| 472 | break; |
| 473 | } |
| 474 | dprintk(1, "thread: exit\n"); |
| 475 | return 0; |
| 476 | } |
| 477 | |
Adrian Bunk | 972c351 | 2006-04-27 21:06:50 -0300 | [diff] [blame] | 478 | static int vivi_start_thread(struct vivi_dmaqueue *dma_q) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 479 | { |
| 480 | dma_q->frame=0; |
| 481 | dma_q->ini_jiffies=jiffies; |
| 482 | |
| 483 | dprintk(1,"%s\n",__FUNCTION__); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 484 | |
| 485 | dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi"); |
| 486 | |
Akinobu Mita | 054afee | 2006-12-20 10:04:00 -0300 | [diff] [blame] | 487 | if (IS_ERR(dma_q->kthread)) { |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 488 | printk(KERN_ERR "vivi: kernel_thread() failed\n"); |
Akinobu Mita | 054afee | 2006-12-20 10:04:00 -0300 | [diff] [blame] | 489 | return PTR_ERR(dma_q->kthread); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 490 | } |
Mauro Carvalho Chehab | 0b60051 | 2007-01-14 08:33:24 -0300 | [diff] [blame] | 491 | /* Wakes thread */ |
| 492 | wake_up_interruptible(&dma_q->wq); |
| 493 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 494 | dprintk(1,"returning from %s\n",__FUNCTION__); |
| 495 | return 0; |
| 496 | } |
| 497 | |
Adrian Bunk | 972c351 | 2006-04-27 21:06:50 -0300 | [diff] [blame] | 498 | static void vivi_stop_thread(struct vivi_dmaqueue *dma_q) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 499 | { |
| 500 | dprintk(1,"%s\n",__FUNCTION__); |
| 501 | /* shutdown control thread */ |
| 502 | if (dma_q->kthread) { |
| 503 | kthread_stop(dma_q->kthread); |
| 504 | dma_q->kthread=NULL; |
| 505 | } |
| 506 | } |
| 507 | |
| 508 | static int restart_video_queue(struct vivi_dmaqueue *dma_q) |
| 509 | { |
| 510 | struct vivi_buffer *buf, *prev; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 511 | |
| 512 | dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q); |
| 513 | |
| 514 | if (!list_empty(&dma_q->active)) { |
| 515 | buf = list_entry(dma_q->active.next, struct vivi_buffer, vb.queue); |
| 516 | dprintk(2,"restart_queue [%p/%d]: restart dma\n", |
| 517 | buf, buf->vb.i); |
| 518 | |
| 519 | dprintk(1,"Restarting video dma\n"); |
| 520 | vivi_stop_thread(dma_q); |
| 521 | // vivi_start_thread(dma_q); |
| 522 | |
| 523 | /* cancel all outstanding capture / vbi requests */ |
Trent Piepho | a991f44 | 2007-10-10 05:37:43 -0300 | [diff] [blame] | 524 | list_for_each_entry_safe(buf, prev, &dma_q->active, vb.queue) { |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 525 | list_del(&buf->vb.queue); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 526 | buf->vb.state = VIDEOBUF_ERROR; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 527 | wake_up(&buf->vb.done); |
| 528 | } |
| 529 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
| 530 | |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | prev = NULL; |
| 535 | for (;;) { |
| 536 | if (list_empty(&dma_q->queued)) |
| 537 | return 0; |
| 538 | buf = list_entry(dma_q->queued.next, struct vivi_buffer, vb.queue); |
| 539 | if (NULL == prev) { |
| 540 | list_del(&buf->vb.queue); |
| 541 | list_add_tail(&buf->vb.queue,&dma_q->active); |
| 542 | |
| 543 | dprintk(1,"Restarting video dma\n"); |
| 544 | vivi_stop_thread(dma_q); |
| 545 | vivi_start_thread(dma_q); |
| 546 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 547 | buf->vb.state = VIDEOBUF_ACTIVE; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 548 | mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); |
| 549 | dprintk(2,"[%p/%d] restart_queue - first active\n", |
| 550 | buf,buf->vb.i); |
| 551 | |
| 552 | } else if (prev->vb.width == buf->vb.width && |
| 553 | prev->vb.height == buf->vb.height && |
| 554 | prev->fmt == buf->fmt) { |
| 555 | list_del(&buf->vb.queue); |
| 556 | list_add_tail(&buf->vb.queue,&dma_q->active); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 557 | buf->vb.state = VIDEOBUF_ACTIVE; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 558 | dprintk(2,"[%p/%d] restart_queue - move to active\n", |
| 559 | buf,buf->vb.i); |
| 560 | } else { |
| 561 | return 0; |
| 562 | } |
| 563 | prev = buf; |
| 564 | } |
| 565 | } |
| 566 | |
| 567 | static void vivi_vid_timeout(unsigned long data) |
| 568 | { |
| 569 | struct vivi_dev *dev = (struct vivi_dev*)data; |
| 570 | struct vivi_dmaqueue *vidq = &dev->vidq; |
| 571 | struct vivi_buffer *buf; |
| 572 | |
| 573 | while (!list_empty(&vidq->active)) { |
| 574 | buf = list_entry(vidq->active.next, struct vivi_buffer, vb.queue); |
| 575 | list_del(&buf->vb.queue); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 576 | buf->vb.state = VIDEOBUF_ERROR; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 577 | wake_up(&buf->vb.done); |
| 578 | printk("vivi/0: [%p/%d] timeout\n", buf, buf->vb.i); |
| 579 | } |
| 580 | |
| 581 | restart_video_queue(vidq); |
| 582 | } |
| 583 | |
| 584 | /* ------------------------------------------------------------------ |
| 585 | Videobuf operations |
| 586 | ------------------------------------------------------------------*/ |
| 587 | static int |
| 588 | buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) |
| 589 | { |
| 590 | struct vivi_fh *fh = vq->priv_data; |
| 591 | |
| 592 | *size = fh->width*fh->height*2; |
| 593 | |
| 594 | if (0 == *count) |
| 595 | *count = 32; |
Mauro Carvalho Chehab | 6bb2790 | 2007-08-23 16:41:14 -0300 | [diff] [blame] | 596 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 597 | while (*size * *count > vid_limit * 1024 * 1024) |
| 598 | (*count)--; |
Mauro Carvalho Chehab | 6bb2790 | 2007-08-23 16:41:14 -0300 | [diff] [blame] | 599 | |
| 600 | dprintk(1,"%s, count=%d, size=%d\n",__FUNCTION__,*count, *size); |
| 601 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 602 | return 0; |
| 603 | } |
| 604 | |
Adrian Bunk | 972c351 | 2006-04-27 21:06:50 -0300 | [diff] [blame] | 605 | static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 606 | { |
| 607 | dprintk(1,"%s\n",__FUNCTION__); |
| 608 | |
| 609 | if (in_interrupt()) |
| 610 | BUG(); |
| 611 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 612 | videobuf_waiton(&buf->vb,0,0); |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 613 | videobuf_vmalloc_free(&buf->vb); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 614 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | #define norm_maxw() 1024 |
| 618 | #define norm_maxh() 768 |
| 619 | static int |
| 620 | buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, |
| 621 | enum v4l2_field field) |
| 622 | { |
| 623 | struct vivi_fh *fh = vq->priv_data; |
| 624 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); |
| 625 | int rc, init_buffer = 0; |
| 626 | |
Mauro Carvalho Chehab | 6bb2790 | 2007-08-23 16:41:14 -0300 | [diff] [blame] | 627 | dprintk(1,"%s, field=%d\n",__FUNCTION__,field); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 628 | |
| 629 | BUG_ON(NULL == fh->fmt); |
| 630 | if (fh->width < 48 || fh->width > norm_maxw() || |
| 631 | fh->height < 32 || fh->height > norm_maxh()) |
| 632 | return -EINVAL; |
| 633 | buf->vb.size = fh->width*fh->height*2; |
| 634 | if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) |
| 635 | return -EINVAL; |
| 636 | |
| 637 | if (buf->fmt != fh->fmt || |
| 638 | buf->vb.width != fh->width || |
| 639 | buf->vb.height != fh->height || |
| 640 | buf->vb.field != field) { |
| 641 | buf->fmt = fh->fmt; |
| 642 | buf->vb.width = fh->width; |
| 643 | buf->vb.height = fh->height; |
| 644 | buf->vb.field = field; |
| 645 | init_buffer = 1; |
| 646 | } |
| 647 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 648 | if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 649 | if (0 != (rc = videobuf_iolock(vq,&buf->vb,NULL))) |
| 650 | goto fail; |
| 651 | } |
| 652 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 653 | buf->vb.state = VIDEOBUF_PREPARED; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 654 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 655 | return 0; |
| 656 | |
| 657 | fail: |
| 658 | free_buffer(vq,buf); |
| 659 | return rc; |
| 660 | } |
| 661 | |
| 662 | static void |
| 663 | buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| 664 | { |
| 665 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); |
| 666 | struct vivi_fh *fh = vq->priv_data; |
| 667 | struct vivi_dev *dev = fh->dev; |
| 668 | struct vivi_dmaqueue *vidq = &dev->vidq; |
| 669 | struct vivi_buffer *prev; |
| 670 | |
| 671 | if (!list_empty(&vidq->queued)) { |
| 672 | dprintk(1,"adding vb queue=0x%08lx\n",(unsigned long)&buf->vb.queue); |
| 673 | list_add_tail(&buf->vb.queue,&vidq->queued); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 674 | buf->vb.state = VIDEOBUF_QUEUED; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 675 | dprintk(2,"[%p/%d] buffer_queue - append to queued\n", |
| 676 | buf, buf->vb.i); |
| 677 | } else if (list_empty(&vidq->active)) { |
| 678 | list_add_tail(&buf->vb.queue,&vidq->active); |
| 679 | |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 680 | buf->vb.state = VIDEOBUF_ACTIVE; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 681 | mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT); |
| 682 | dprintk(2,"[%p/%d] buffer_queue - first active\n", |
| 683 | buf, buf->vb.i); |
| 684 | |
| 685 | vivi_start_thread(vidq); |
| 686 | } else { |
| 687 | prev = list_entry(vidq->active.prev, struct vivi_buffer, vb.queue); |
| 688 | if (prev->vb.width == buf->vb.width && |
| 689 | prev->vb.height == buf->vb.height && |
| 690 | prev->fmt == buf->fmt) { |
| 691 | list_add_tail(&buf->vb.queue,&vidq->active); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 692 | buf->vb.state = VIDEOBUF_ACTIVE; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 693 | dprintk(2,"[%p/%d] buffer_queue - append to active\n", |
| 694 | buf, buf->vb.i); |
| 695 | |
| 696 | } else { |
| 697 | list_add_tail(&buf->vb.queue,&vidq->queued); |
Brandon Philips | 0fc0686 | 2007-11-06 20:02:36 -0300 | [diff] [blame] | 698 | buf->vb.state = VIDEOBUF_QUEUED; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 699 | dprintk(2,"[%p/%d] buffer_queue - first queued\n", |
| 700 | buf, buf->vb.i); |
| 701 | } |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | static void buffer_release(struct videobuf_queue *vq, struct videobuf_buffer *vb) |
| 706 | { |
| 707 | struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb); |
| 708 | struct vivi_fh *fh = vq->priv_data; |
| 709 | struct vivi_dev *dev = (struct vivi_dev*)fh->dev; |
| 710 | struct vivi_dmaqueue *vidq = &dev->vidq; |
| 711 | |
| 712 | dprintk(1,"%s\n",__FUNCTION__); |
| 713 | |
| 714 | vivi_stop_thread(vidq); |
| 715 | |
| 716 | free_buffer(vq,buf); |
| 717 | } |
| 718 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 719 | static struct videobuf_queue_ops vivi_video_qops = { |
| 720 | .buf_setup = buffer_setup, |
| 721 | .buf_prepare = buffer_prepare, |
| 722 | .buf_queue = buffer_queue, |
| 723 | .buf_release = buffer_release, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 724 | }; |
| 725 | |
| 726 | /* ------------------------------------------------------------------ |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 727 | IOCTL vidioc handling |
| 728 | ------------------------------------------------------------------*/ |
| 729 | static int vidioc_querycap (struct file *file, void *priv, |
| 730 | struct v4l2_capability *cap) |
| 731 | { |
| 732 | strcpy(cap->driver, "vivi"); |
| 733 | strcpy(cap->card, "vivi"); |
| 734 | cap->version = VIVI_VERSION; |
| 735 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
| 736 | V4L2_CAP_STREAMING | |
| 737 | V4L2_CAP_READWRITE; |
| 738 | return 0; |
| 739 | } |
| 740 | |
| 741 | static int vidioc_enum_fmt_cap (struct file *file, void *priv, |
| 742 | struct v4l2_fmtdesc *f) |
| 743 | { |
| 744 | if (f->index > 0) |
| 745 | return -EINVAL; |
| 746 | |
| 747 | strlcpy(f->description,format.name,sizeof(f->description)); |
| 748 | f->pixelformat = format.fourcc; |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | static int vidioc_g_fmt_cap (struct file *file, void *priv, |
| 753 | struct v4l2_format *f) |
| 754 | { |
| 755 | struct vivi_fh *fh=priv; |
| 756 | |
| 757 | f->fmt.pix.width = fh->width; |
| 758 | f->fmt.pix.height = fh->height; |
| 759 | f->fmt.pix.field = fh->vb_vidq.field; |
| 760 | f->fmt.pix.pixelformat = fh->fmt->fourcc; |
| 761 | f->fmt.pix.bytesperline = |
| 762 | (f->fmt.pix.width * fh->fmt->depth) >> 3; |
| 763 | f->fmt.pix.sizeimage = |
| 764 | f->fmt.pix.height * f->fmt.pix.bytesperline; |
| 765 | |
| 766 | return (0); |
| 767 | } |
| 768 | |
| 769 | static int vidioc_try_fmt_cap (struct file *file, void *priv, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 770 | struct v4l2_format *f) |
| 771 | { |
| 772 | struct vivi_fmt *fmt; |
| 773 | enum v4l2_field field; |
| 774 | unsigned int maxw, maxh; |
| 775 | |
| 776 | if (format.fourcc != f->fmt.pix.pixelformat) { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 777 | dprintk(1,"Fourcc format (0x%08x) invalid. Driver accepts " |
| 778 | "only 0x%08x\n",f->fmt.pix.pixelformat,format.fourcc); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 779 | return -EINVAL; |
| 780 | } |
| 781 | fmt=&format; |
| 782 | |
| 783 | field = f->fmt.pix.field; |
| 784 | |
| 785 | if (field == V4L2_FIELD_ANY) { |
Brandon Philips | a326ae1 | 2007-09-27 20:54:52 -0300 | [diff] [blame] | 786 | field=V4L2_FIELD_INTERLACED; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 787 | } else if (V4L2_FIELD_INTERLACED != field) { |
| 788 | dprintk(1,"Field type invalid.\n"); |
| 789 | return -EINVAL; |
| 790 | } |
| 791 | |
| 792 | maxw = norm_maxw(); |
| 793 | maxh = norm_maxh(); |
| 794 | |
| 795 | f->fmt.pix.field = field; |
| 796 | if (f->fmt.pix.height < 32) |
| 797 | f->fmt.pix.height = 32; |
| 798 | if (f->fmt.pix.height > maxh) |
| 799 | f->fmt.pix.height = maxh; |
| 800 | if (f->fmt.pix.width < 48) |
| 801 | f->fmt.pix.width = 48; |
| 802 | if (f->fmt.pix.width > maxw) |
| 803 | f->fmt.pix.width = maxw; |
| 804 | f->fmt.pix.width &= ~0x03; |
| 805 | f->fmt.pix.bytesperline = |
| 806 | (f->fmt.pix.width * fmt->depth) >> 3; |
| 807 | f->fmt.pix.sizeimage = |
| 808 | f->fmt.pix.height * f->fmt.pix.bytesperline; |
| 809 | |
| 810 | return 0; |
| 811 | } |
| 812 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 813 | /*FIXME: This seems to be generic enough to be at videodev2 */ |
| 814 | static int vidioc_s_fmt_cap (struct file *file, void *priv, |
| 815 | struct v4l2_format *f) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 816 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 817 | struct vivi_fh *fh=priv; |
| 818 | int ret = vidioc_try_fmt_cap(file,fh,f); |
| 819 | if (ret < 0) |
| 820 | return (ret); |
| 821 | |
| 822 | fh->fmt = &format; |
| 823 | fh->width = f->fmt.pix.width; |
| 824 | fh->height = f->fmt.pix.height; |
| 825 | fh->vb_vidq.field = f->fmt.pix.field; |
| 826 | fh->type = f->type; |
| 827 | |
| 828 | return (0); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 829 | } |
| 830 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 831 | static int vidioc_reqbufs (struct file *file, void *priv, struct v4l2_requestbuffers *p) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 832 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 833 | struct vivi_fh *fh=priv; |
| 834 | |
| 835 | return (videobuf_reqbufs(&fh->vb_vidq, p)); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 836 | } |
| 837 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 838 | static int vidioc_querybuf (struct file *file, void *priv, struct v4l2_buffer *p) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 839 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 840 | struct vivi_fh *fh=priv; |
| 841 | |
| 842 | return (videobuf_querybuf(&fh->vb_vidq, p)); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 843 | } |
| 844 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 845 | static int vidioc_qbuf (struct file *file, void *priv, struct v4l2_buffer *p) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 846 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 847 | struct vivi_fh *fh=priv; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 848 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 849 | return (videobuf_qbuf(&fh->vb_vidq, p)); |
| 850 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 851 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 852 | static int vidioc_dqbuf (struct file *file, void *priv, struct v4l2_buffer *p) |
| 853 | { |
| 854 | struct vivi_fh *fh=priv; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 855 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 856 | return (videobuf_dqbuf(&fh->vb_vidq, p, |
| 857 | file->f_flags & O_NONBLOCK)); |
| 858 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 859 | |
Mauro Carvalho Chehab | 0dfa9ab | 2006-08-08 09:10:10 -0300 | [diff] [blame] | 860 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 861 | static int vidiocgmbuf (struct file *file, void *priv, struct video_mbuf *mbuf) |
| 862 | { |
| 863 | struct vivi_fh *fh=priv; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 864 | |
Mauro Carvalho Chehab | 6bb2790 | 2007-08-23 16:41:14 -0300 | [diff] [blame] | 865 | return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 866 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 867 | #endif |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 868 | |
Adrian Bunk | dc46ace | 2006-06-23 06:42:44 -0300 | [diff] [blame] | 869 | static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 870 | { |
| 871 | struct vivi_fh *fh=priv; |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 872 | |
| 873 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 874 | return -EINVAL; |
| 875 | if (i != fh->type) |
| 876 | return -EINVAL; |
| 877 | |
Brandon Philips | ba32bd9 | 2007-09-27 20:55:17 -0300 | [diff] [blame] | 878 | return videobuf_streamon(&fh->vb_vidq); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 879 | } |
| 880 | |
Adrian Bunk | dc46ace | 2006-06-23 06:42:44 -0300 | [diff] [blame] | 881 | static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 882 | { |
| 883 | struct vivi_fh *fh=priv; |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 884 | |
| 885 | if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 886 | return -EINVAL; |
| 887 | if (i != fh->type) |
| 888 | return -EINVAL; |
| 889 | |
Brandon Philips | ba32bd9 | 2007-09-27 20:55:17 -0300 | [diff] [blame] | 890 | return videobuf_streamoff(&fh->vb_vidq); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 891 | } |
| 892 | |
Mauro Carvalho Chehab | e75f9ce | 2006-11-20 13:19:20 -0300 | [diff] [blame] | 893 | static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i) |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 894 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 895 | return 0; |
| 896 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 897 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 898 | /* only one input in this sample driver */ |
| 899 | static int vidioc_enum_input (struct file *file, void *priv, |
| 900 | struct v4l2_input *inp) |
| 901 | { |
| 902 | if (inp->index != 0) |
| 903 | return -EINVAL; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 904 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 905 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
| 906 | inp->std = V4L2_STD_NTSC_M; |
| 907 | strcpy(inp->name,"Camera"); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 908 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 909 | return (0); |
| 910 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 911 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 912 | static int vidioc_g_input (struct file *file, void *priv, unsigned int *i) |
| 913 | { |
| 914 | *i = 0; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 915 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 916 | return (0); |
| 917 | } |
| 918 | static int vidioc_s_input (struct file *file, void *priv, unsigned int i) |
| 919 | { |
| 920 | if (i > 0) |
| 921 | return -EINVAL; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 922 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 923 | return (0); |
| 924 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 925 | |
| 926 | /* --- controls ---------------------------------------------- */ |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 927 | static int vidioc_queryctrl (struct file *file, void *priv, |
| 928 | struct v4l2_queryctrl *qc) |
| 929 | { |
| 930 | int i; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 931 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 932 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
| 933 | if (qc->id && qc->id == vivi_qctrl[i].id) { |
| 934 | memcpy(qc, &(vivi_qctrl[i]), |
| 935 | sizeof(*qc)); |
| 936 | return (0); |
| 937 | } |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 938 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 939 | return -EINVAL; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 940 | } |
| 941 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 942 | static int vidioc_g_ctrl (struct file *file, void *priv, |
| 943 | struct v4l2_control *ctrl) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 944 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 945 | int i; |
| 946 | |
| 947 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
| 948 | if (ctrl->id == vivi_qctrl[i].id) { |
| 949 | ctrl->value=qctl_regs[i]; |
| 950 | return (0); |
| 951 | } |
| 952 | |
| 953 | return -EINVAL; |
| 954 | } |
| 955 | static int vidioc_s_ctrl (struct file *file, void *priv, |
| 956 | struct v4l2_control *ctrl) |
| 957 | { |
| 958 | int i; |
| 959 | |
| 960 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
| 961 | if (ctrl->id == vivi_qctrl[i].id) { |
| 962 | if (ctrl->value < |
| 963 | vivi_qctrl[i].minimum |
| 964 | || ctrl->value > |
| 965 | vivi_qctrl[i].maximum) { |
| 966 | return (-ERANGE); |
| 967 | } |
| 968 | qctl_regs[i]=ctrl->value; |
| 969 | return (0); |
| 970 | } |
| 971 | return -EINVAL; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 972 | } |
| 973 | |
| 974 | /* ------------------------------------------------------------------ |
| 975 | File operations for the device |
| 976 | ------------------------------------------------------------------*/ |
| 977 | |
| 978 | #define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8) |
| 979 | |
| 980 | static int vivi_open(struct inode *inode, struct file *file) |
| 981 | { |
| 982 | int minor = iminor(inode); |
Trent Piepho | a991f44 | 2007-10-10 05:37:43 -0300 | [diff] [blame] | 983 | struct vivi_dev *dev; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 984 | struct vivi_fh *fh; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 985 | int i; |
| 986 | |
| 987 | printk(KERN_DEBUG "vivi: open called (minor=%d)\n",minor); |
| 988 | |
Trent Piepho | a991f44 | 2007-10-10 05:37:43 -0300 | [diff] [blame] | 989 | list_for_each_entry(dev, &vivi_devlist, vivi_devlist) |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 990 | if (dev->vfd->minor == minor) |
Trent Piepho | a991f44 | 2007-10-10 05:37:43 -0300 | [diff] [blame] | 991 | goto found; |
| 992 | return -ENODEV; |
| 993 | found: |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 994 | |
| 995 | |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 996 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 997 | /* If more than one user, mutex should be added */ |
| 998 | dev->users++; |
| 999 | |
Trent Piepho | a991f44 | 2007-10-10 05:37:43 -0300 | [diff] [blame] | 1000 | dprintk(1, "open minor=%d type=%s users=%d\n", minor, |
| 1001 | v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1002 | |
| 1003 | /* allocate + initialize per filehandle data */ |
| 1004 | fh = kzalloc(sizeof(*fh),GFP_KERNEL); |
| 1005 | if (NULL == fh) { |
| 1006 | dev->users--; |
| 1007 | return -ENOMEM; |
| 1008 | } |
| 1009 | |
| 1010 | file->private_data = fh; |
| 1011 | fh->dev = dev; |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1012 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1013 | fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 1014 | fh->fmt = &format; |
| 1015 | fh->width = 640; |
| 1016 | fh->height = 480; |
| 1017 | |
| 1018 | /* Put all controls at a sane state */ |
| 1019 | for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++) |
| 1020 | qctl_regs[i] =vivi_qctrl[i].default_value; |
| 1021 | |
| 1022 | dprintk(1,"Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n", |
| 1023 | (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq); |
| 1024 | dprintk(1,"Open: list_empty queued=%d\n",list_empty(&dev->vidq.queued)); |
| 1025 | dprintk(1,"Open: list_empty active=%d\n",list_empty(&dev->vidq.active)); |
| 1026 | |
| 1027 | /* Resets frame counters */ |
| 1028 | dev->h=0; |
| 1029 | dev->m=0; |
| 1030 | dev->s=0; |
| 1031 | dev->us=0; |
| 1032 | dev->jiffies=jiffies; |
| 1033 | sprintf(dev->timestr,"%02d:%02d:%02d:%03d", |
| 1034 | dev->h,dev->m,dev->s,(dev->us+500)/1000); |
| 1035 | |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 1036 | videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1037 | NULL, NULL, |
| 1038 | fh->type, |
| 1039 | V4L2_FIELD_INTERLACED, |
| 1040 | sizeof(struct vivi_buffer),fh); |
| 1041 | |
| 1042 | return 0; |
| 1043 | } |
| 1044 | |
| 1045 | static ssize_t |
| 1046 | vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos) |
| 1047 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1048 | struct vivi_fh *fh = file->private_data; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1049 | |
| 1050 | if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
Mauro Carvalho Chehab | acb09af | 2007-07-29 22:56:11 -0300 | [diff] [blame] | 1051 | return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1052 | file->f_flags & O_NONBLOCK); |
| 1053 | } |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | static unsigned int |
| 1058 | vivi_poll(struct file *file, struct poll_table_struct *wait) |
| 1059 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1060 | struct vivi_fh *fh = file->private_data; |
Brandon Philips | 85c7c70bc | 2007-09-27 20:55:02 -0300 | [diff] [blame] | 1061 | struct videobuf_queue *q = &fh->vb_vidq; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1062 | |
| 1063 | dprintk(1,"%s\n",__FUNCTION__); |
| 1064 | |
| 1065 | if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) |
| 1066 | return POLLERR; |
| 1067 | |
Brandon Philips | 85c7c70bc | 2007-09-27 20:55:02 -0300 | [diff] [blame] | 1068 | return videobuf_poll_stream(file, q, wait); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1069 | } |
| 1070 | |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1071 | static int vivi_close(struct inode *inode, struct file *file) |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1072 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1073 | struct vivi_fh *fh = file->private_data; |
| 1074 | struct vivi_dev *dev = fh->dev; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1075 | struct vivi_dmaqueue *vidq = &dev->vidq; |
| 1076 | |
| 1077 | int minor = iminor(inode); |
| 1078 | |
| 1079 | vivi_stop_thread(vidq); |
Brandon Philips | 053fcb6 | 2007-11-13 20:11:26 -0300 | [diff] [blame] | 1080 | videobuf_stop(&fh->vb_vidq); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1081 | videobuf_mmap_free(&fh->vb_vidq); |
| 1082 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1083 | kfree(fh); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1084 | |
| 1085 | dev->users--; |
| 1086 | |
| 1087 | printk(KERN_DEBUG "vivi: close called (minor=%d, users=%d)\n",minor,dev->users); |
| 1088 | |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1092 | static int vivi_release(void) |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1093 | { |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1094 | struct vivi_dev *dev; |
| 1095 | struct list_head *list; |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1096 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1097 | while (!list_empty(&vivi_devlist)) { |
| 1098 | list = vivi_devlist.next; |
| 1099 | list_del(list); |
| 1100 | dev = list_entry(list, struct vivi_dev, vivi_devlist); |
| 1101 | |
| 1102 | if (-1 != dev->vfd->minor) |
| 1103 | video_unregister_device(dev->vfd); |
| 1104 | else |
| 1105 | video_device_release(dev->vfd); |
| 1106 | |
| 1107 | kfree(dev); |
| 1108 | } |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1109 | |
| 1110 | return 0; |
| 1111 | } |
| 1112 | |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1113 | static int |
| 1114 | vivi_mmap(struct file *file, struct vm_area_struct * vma) |
| 1115 | { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1116 | struct vivi_fh *fh = file->private_data; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1117 | int ret; |
| 1118 | |
| 1119 | dprintk (1,"mmap called, vma=0x%08lx\n",(unsigned long)vma); |
| 1120 | |
| 1121 | ret=videobuf_mmap_mapper(&fh->vb_vidq, vma); |
| 1122 | |
| 1123 | dprintk (1,"vma start=0x%08lx, size=%ld, ret=%d\n", |
| 1124 | (unsigned long)vma->vm_start, |
| 1125 | (unsigned long)vma->vm_end-(unsigned long)vma->vm_start, |
| 1126 | ret); |
| 1127 | |
| 1128 | return ret; |
| 1129 | } |
| 1130 | |
Arjan van de Ven | fa027c2 | 2007-02-12 00:55:33 -0800 | [diff] [blame] | 1131 | static const struct file_operations vivi_fops = { |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1132 | .owner = THIS_MODULE, |
| 1133 | .open = vivi_open, |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1134 | .release = vivi_close, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1135 | .read = vivi_read, |
| 1136 | .poll = vivi_poll, |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1137 | .ioctl = video_ioctl2, /* V4L2 ioctl handler */ |
Mauro Carvalho Chehab | 5a03770 | 2007-08-02 23:31:54 -0300 | [diff] [blame] | 1138 | .mmap = vivi_mmap, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1139 | .llseek = no_llseek, |
| 1140 | }; |
| 1141 | |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1142 | static struct video_device vivi_template = { |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1143 | .name = "vivi", |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1144 | .type = VID_TYPE_CAPTURE, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1145 | .fops = &vivi_fops, |
| 1146 | .minor = -1, |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1147 | .release = video_device_release, |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1148 | |
| 1149 | .vidioc_querycap = vidioc_querycap, |
| 1150 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, |
| 1151 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, |
| 1152 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, |
| 1153 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, |
| 1154 | .vidioc_reqbufs = vidioc_reqbufs, |
| 1155 | .vidioc_querybuf = vidioc_querybuf, |
| 1156 | .vidioc_qbuf = vidioc_qbuf, |
| 1157 | .vidioc_dqbuf = vidioc_dqbuf, |
| 1158 | .vidioc_s_std = vidioc_s_std, |
| 1159 | .vidioc_enum_input = vidioc_enum_input, |
| 1160 | .vidioc_g_input = vidioc_g_input, |
| 1161 | .vidioc_s_input = vidioc_s_input, |
| 1162 | .vidioc_queryctrl = vidioc_queryctrl, |
| 1163 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 1164 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 1165 | .vidioc_streamon = vidioc_streamon, |
| 1166 | .vidioc_streamoff = vidioc_streamoff, |
Mauro Carvalho Chehab | 0dfa9ab | 2006-08-08 09:10:10 -0300 | [diff] [blame] | 1167 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1168 | .vidiocgmbuf = vidiocgmbuf, |
| 1169 | #endif |
Mauro Carvalho Chehab | e75f9ce | 2006-11-20 13:19:20 -0300 | [diff] [blame] | 1170 | .tvnorms = V4L2_STD_NTSC_M, |
| 1171 | .current_norm = V4L2_STD_NTSC_M, |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1172 | }; |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1173 | /* ----------------------------------------------------------------- |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1174 | Initialization and module stuff |
| 1175 | ------------------------------------------------------------------*/ |
| 1176 | |
| 1177 | static int __init vivi_init(void) |
| 1178 | { |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1179 | int ret = -ENOMEM, i; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1180 | struct vivi_dev *dev; |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1181 | struct video_device *vfd; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1182 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1183 | for (i = 0; i < n_devs; i++) { |
| 1184 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
| 1185 | if (NULL == dev) |
| 1186 | break; |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1187 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1188 | list_add_tail(&dev->vivi_devlist, &vivi_devlist); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1189 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1190 | /* init video dma queues */ |
| 1191 | INIT_LIST_HEAD(&dev->vidq.active); |
| 1192 | INIT_LIST_HEAD(&dev->vidq.queued); |
| 1193 | init_waitqueue_head(&dev->vidq.wq); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1194 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1195 | /* initialize locks */ |
| 1196 | mutex_init(&dev->lock); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1197 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1198 | dev->vidq.timeout.function = vivi_vid_timeout; |
| 1199 | dev->vidq.timeout.data = (unsigned long)dev; |
| 1200 | init_timer(&dev->vidq.timeout); |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1201 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1202 | vfd = video_device_alloc(); |
| 1203 | if (NULL == vfd) |
| 1204 | break; |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1205 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1206 | *vfd = vivi_template; |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1207 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1208 | ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); |
| 1209 | if (ret < 0) |
| 1210 | break; |
Mauro Carvalho Chehab | f905c44 | 2007-12-10 04:07:03 -0300 | [diff] [blame] | 1211 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1212 | snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", |
| 1213 | vivi_template.name, vfd->minor); |
| 1214 | |
| 1215 | if (video_nr >= 0) |
| 1216 | video_nr++; |
| 1217 | |
| 1218 | dev->vfd = vfd; |
| 1219 | } |
| 1220 | |
| 1221 | if (ret < 0) { |
| 1222 | vivi_release(); |
| 1223 | printk(KERN_INFO "Error %d while loading vivi driver\n", ret); |
| 1224 | } else |
| 1225 | printk(KERN_INFO "Video Technology Magazine Virtual Video " |
| 1226 | "Capture Board successfully loaded.\n"); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1227 | return ret; |
| 1228 | } |
| 1229 | |
| 1230 | static void __exit vivi_exit(void) |
| 1231 | { |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1232 | vivi_release(); |
Mauro Carvalho Chehab | 1e6dd65 | 2006-03-10 12:40:10 -0300 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | module_init(vivi_init); |
| 1236 | module_exit(vivi_exit); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1237 | |
| 1238 | MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board"); |
| 1239 | MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); |
| 1240 | MODULE_LICENSE("Dual BSD/GPL"); |
| 1241 | |
| 1242 | module_param(video_nr, int, 0); |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1243 | MODULE_PARM_DESC(video_nr, "video iminor start number"); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1244 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1245 | module_param(n_devs, int, 0); |
| 1246 | MODULE_PARM_DESC(n_devs, "number of video devices to create"); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1247 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1248 | module_param_named(debug, vivi.debug, int, 0644); |
| 1249 | MODULE_PARM_DESC(debug, "activates debug info"); |
Mauro Carvalho Chehab | c820cc4 | 2006-06-04 10:34:12 -0300 | [diff] [blame] | 1250 | |
Mauro Carvalho Chehab | 55712ff | 2007-12-10 04:38:11 -0300 | [diff] [blame] | 1251 | module_param(vid_limit, int, 0644); |
| 1252 | MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); |