Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
[linux-2.6.git] / drivers / media / video / zoran_driver.c
1 /*
2  * Zoran zr36057/zr36067 PCI controller driver, for the
3  * Pinnacle/Miro DC10/DC10+/DC30/DC30+, Iomega Buz, Linux
4  * Media Labs LML33/LML33R10.
5  *
6  * Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
7  *
8  * Changes for BUZ by Wolfgang Scherr <scherr@net4you.net>
9  *
10  * Changes for DC10/DC30 by Laurent Pinchart <laurent.pinchart@skynet.be>
11  *
12  * Changes for LML33R10 by Maxim Yevtyushkin <max@linuxmedialabs.com>
13  *
14  * Changes for videodev2/v4l2 by Ronald Bultje <rbultje@ronald.bitfreak.net>
15  *
16  * Based on
17  *
18  * Miro DC10 driver
19  * Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
20  *
21  * Iomega Buz driver version 1.0
22  * Copyright (C) 1999 Rainer Johanni <Rainer@Johanni.de>
23  *
24  * buz.0.0.3
25  * Copyright (C) 1998 Dave Perks <dperks@ibm.net>
26  *
27  * bttv - Bt848 frame grabber driver
28  * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
29  *                        & Marcus Metzler (mocm@thp.uni-koeln.de)
30  *
31  *
32  * This program is free software; you can redistribute it and/or modify
33  * it under the terms of the GNU General Public License as published by
34  * the Free Software Foundation; either version 2 of the License, or
35  * (at your option) any later version.
36  *
37  * This program is distributed in the hope that it will be useful,
38  * but WITHOUT ANY WARRANTY; without even the implied warranty of
39  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
40  * GNU General Public License for more details.
41  *
42  * You should have received a copy of the GNU General Public License
43  * along with this program; if not, write to the Free Software
44  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
45  */
46
47 #include <linux/version.h>
48 #include <linux/init.h>
49 #include <linux/module.h>
50 #include <linux/delay.h>
51 #include <linux/slab.h>
52 #include <linux/pci.h>
53 #include <linux/vmalloc.h>
54 #include <linux/wait.h>
55
56 #include <linux/interrupt.h>
57 #include <linux/i2c.h>
58 #include <linux/i2c-algo-bit.h>
59
60 #include <linux/spinlock.h>
61 #define     MAP_NR(x)       virt_to_page(x)
62 #define     ZORAN_VID_TYPE  ( \
63                                 VID_TYPE_CAPTURE | \
64                                 VID_TYPE_OVERLAY | \
65                                 VID_TYPE_CLIPPING | \
66                                 VID_TYPE_FRAMERAM | \
67                                 VID_TYPE_SCALES | \
68                                 VID_TYPE_MJPEG_DECODER | \
69                                 VID_TYPE_MJPEG_ENCODER \
70                              )
71
72 #include <linux/videodev.h>
73 #include <media/v4l2-common.h>
74 #include <media/v4l2-ioctl.h>
75 #include "videocodec.h"
76
77 #include <asm/byteorder.h>
78 #include <asm/io.h>
79 #include <asm/uaccess.h>
80 #include <linux/proc_fs.h>
81
82 #include <linux/video_decoder.h>
83 #include <linux/video_encoder.h>
84 #include <linux/mutex.h>
85 #include "zoran.h"
86 #include "zoran_device.h"
87 #include "zoran_card.h"
88
89         /* we declare some card type definitions here, they mean
90          * the same as the v4l1 ZORAN_VID_TYPE above, except it's v4l2 */
91 #define ZORAN_V4L2_VID_FLAGS ( \
92                                 V4L2_CAP_STREAMING |\
93                                 V4L2_CAP_VIDEO_CAPTURE |\
94                                 V4L2_CAP_VIDEO_OUTPUT |\
95                                 V4L2_CAP_VIDEO_OVERLAY \
96                               )
97
98
99 #if defined(CONFIG_VIDEO_V4L1_COMPAT)
100 #define ZFMT(pal, fcc, cs) \
101         .palette = (pal), .fourcc = (fcc), .colorspace = (cs)
102 #else
103 #define ZFMT(pal, fcc, cs) \
104         .fourcc = (fcc), .colorspace = (cs)
105 #endif
106
107 const struct zoran_format zoran_formats[] = {
108         {
109                 .name = "15-bit RGB LE",
110                 ZFMT(VIDEO_PALETTE_RGB555,
111                      V4L2_PIX_FMT_RGB555, V4L2_COLORSPACE_SRGB),
112                 .depth = 15,
113                 .flags = ZORAN_FORMAT_CAPTURE |
114                          ZORAN_FORMAT_OVERLAY,
115                 .vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif|
116                            ZR36057_VFESPFR_LittleEndian,
117         }, {
118                 .name = "15-bit RGB BE",
119                 ZFMT(-1,
120                      V4L2_PIX_FMT_RGB555X, V4L2_COLORSPACE_SRGB),
121                 .depth = 15,
122                 .flags = ZORAN_FORMAT_CAPTURE |
123                          ZORAN_FORMAT_OVERLAY,
124                 .vfespfr = ZR36057_VFESPFR_RGB555|ZR36057_VFESPFR_ErrDif,
125         }, {
126                 .name = "16-bit RGB LE",
127                 ZFMT(VIDEO_PALETTE_RGB565,
128                      V4L2_PIX_FMT_RGB565, V4L2_COLORSPACE_SRGB),
129                 .depth = 16,
130                 .flags = ZORAN_FORMAT_CAPTURE |
131                          ZORAN_FORMAT_OVERLAY,
132                 .vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif|
133                            ZR36057_VFESPFR_LittleEndian,
134         }, {
135                 .name = "16-bit RGB BE",
136                 ZFMT(-1,
137                      V4L2_PIX_FMT_RGB565X, V4L2_COLORSPACE_SRGB),
138                 .depth = 16,
139                 .flags = ZORAN_FORMAT_CAPTURE |
140                          ZORAN_FORMAT_OVERLAY,
141                 .vfespfr = ZR36057_VFESPFR_RGB565|ZR36057_VFESPFR_ErrDif,
142         }, {
143                 .name = "24-bit RGB",
144                 ZFMT(VIDEO_PALETTE_RGB24,
145                      V4L2_PIX_FMT_BGR24, V4L2_COLORSPACE_SRGB),
146                 .depth = 24,
147                 .flags = ZORAN_FORMAT_CAPTURE |
148                          ZORAN_FORMAT_OVERLAY,
149                 .vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_Pack24,
150         }, {
151                 .name = "32-bit RGB LE",
152                 ZFMT(VIDEO_PALETTE_RGB32,
153                      V4L2_PIX_FMT_BGR32, V4L2_COLORSPACE_SRGB),
154                 .depth = 32,
155                 .flags = ZORAN_FORMAT_CAPTURE |
156                          ZORAN_FORMAT_OVERLAY,
157                 .vfespfr = ZR36057_VFESPFR_RGB888|ZR36057_VFESPFR_LittleEndian,
158         }, {
159                 .name = "32-bit RGB BE",
160                 ZFMT(-1,
161                      V4L2_PIX_FMT_RGB32, V4L2_COLORSPACE_SRGB),
162                 .depth = 32,
163                 .flags = ZORAN_FORMAT_CAPTURE |
164                          ZORAN_FORMAT_OVERLAY,
165                 .vfespfr = ZR36057_VFESPFR_RGB888,
166         }, {
167                 .name = "4:2:2, packed, YUYV",
168                 ZFMT(VIDEO_PALETTE_YUV422,
169                      V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_SMPTE170M),
170                 .depth = 16,
171                 .flags = ZORAN_FORMAT_CAPTURE |
172                          ZORAN_FORMAT_OVERLAY,
173                 .vfespfr = ZR36057_VFESPFR_YUV422,
174         }, {
175                 .name = "4:2:2, packed, UYVY",
176                 ZFMT(VIDEO_PALETTE_UYVY,
177                      V4L2_PIX_FMT_UYVY, V4L2_COLORSPACE_SMPTE170M),
178                 .depth = 16,
179                 .flags = ZORAN_FORMAT_CAPTURE |
180                          ZORAN_FORMAT_OVERLAY,
181                 .vfespfr = ZR36057_VFESPFR_YUV422|ZR36057_VFESPFR_LittleEndian,
182         }, {
183                 .name = "Hardware-encoded Motion-JPEG",
184                 ZFMT(-1,
185                      V4L2_PIX_FMT_MJPEG, V4L2_COLORSPACE_SMPTE170M),
186                 .depth = 0,
187                 .flags = ZORAN_FORMAT_CAPTURE |
188                          ZORAN_FORMAT_PLAYBACK |
189                          ZORAN_FORMAT_COMPRESSED,
190         }
191 };
192 #define NUM_FORMATS ARRAY_SIZE(zoran_formats)
193
194 // RJ: Test only - want to test BUZ_USE_HIMEM even when CONFIG_BIGPHYS_AREA is defined
195
196
197 extern int v4l_nbufs;
198 extern int v4l_bufsize;
199 extern int jpg_nbufs;
200 extern int jpg_bufsize;
201 extern int pass_through;
202
203 static int lock_norm;   /* 0 = default 1 = Don't change TV standard (norm) */
204 module_param(lock_norm, int, 0644);
205 MODULE_PARM_DESC(lock_norm, "Prevent norm changes (1 = ignore, >1 = fail)");
206
207         /* small helper function for calculating buffersizes for v4l2
208          * we calculate the nearest higher power-of-two, which
209          * will be the recommended buffersize */
210 static __u32
211 zoran_v4l2_calc_bufsize (struct zoran_jpg_settings *settings)
212 {
213         __u8 div = settings->VerDcm * settings->HorDcm * settings->TmpDcm;
214         __u32 num = (1024 * 512) / (div);
215         __u32 result = 2;
216
217         num--;
218         while (num) {
219                 num >>= 1;
220                 result <<= 1;
221         }
222
223         if (result > jpg_bufsize)
224                 return jpg_bufsize;
225         if (result < 8192)
226                 return 8192;
227         return result;
228 }
229
230 /* forward references */
231 static void v4l_fbuffer_free(struct file *file);
232 static void jpg_fbuffer_free(struct file *file);
233
234 /*
235  *   Allocate the V4L grab buffers
236  *
237  *   These have to be pysically contiguous.
238  *   If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
239  *   else we try to allocate them with bigphysarea_alloc_pages
240  *   if the bigphysarea patch is present in the kernel,
241  *   else we try to use high memory (if the user has bootet
242  *   Linux with the necessary memory left over).
243  */
244
245 static unsigned long
246 get_high_mem (unsigned long size)
247 {
248 /*
249  * Check if there is usable memory at the end of Linux memory
250  * of at least size. Return the physical address of this memory,
251  * return 0 on failure.
252  *
253  * The idea is from Alexandro Rubini's book "Linux device drivers".
254  * The driver from him which is downloadable from O'Reilly's
255  * web site misses the "virt_to_phys(high_memory)" part
256  * (and therefore doesn't work at all - at least with 2.2.x kernels).
257  *
258  * It should be unnecessary to mention that THIS IS DANGEROUS,
259  * if more than one driver at a time has the idea to use this memory!!!!
260  */
261
262         volatile unsigned char __iomem *mem;
263         unsigned char c;
264         unsigned long hi_mem_ph;
265         unsigned long i;
266
267         /* Map the high memory to user space */
268
269         hi_mem_ph = virt_to_phys(high_memory);
270
271         mem = ioremap(hi_mem_ph, size);
272         if (!mem) {
273                 dprintk(1,
274                         KERN_ERR "%s: get_high_mem() - ioremap failed\n",
275                         ZORAN_NAME);
276                 return 0;
277         }
278
279         for (i = 0; i < size; i++) {
280                 /* Check if it is memory */
281                 c = i & 0xff;
282                 writeb(c, mem + i);
283                 if (readb(mem + i) != c)
284                         break;
285                 c = 255 - c;
286                 writeb(c, mem + i);
287                 if (readb(mem + i) != c)
288                         break;
289                 writeb(0, mem + i);     /* zero out memory */
290
291                 /* give the kernel air to breath */
292                 if ((i & 0x3ffff) == 0x3ffff)
293                         schedule();
294         }
295
296         iounmap(mem);
297
298         if (i != size) {
299                 dprintk(1,
300                         KERN_ERR
301                         "%s: get_high_mem() - requested %lu, avail %lu\n",
302                         ZORAN_NAME, size, i);
303                 return 0;
304         }
305
306         return hi_mem_ph;
307 }
308
309 static int
310 v4l_fbuffer_alloc (struct file *file)
311 {
312         struct zoran_fh *fh = file->private_data;
313         struct zoran *zr = fh->zr;
314         int i, off;
315         unsigned char *mem;
316         unsigned long pmem = 0;
317
318         /* we might have old buffers lying around... */
319         if (fh->v4l_buffers.ready_to_be_freed) {
320                 v4l_fbuffer_free(file);
321         }
322
323         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
324                 if (fh->v4l_buffers.buffer[i].fbuffer)
325                         dprintk(2,
326                                 KERN_WARNING
327                                 "%s: v4l_fbuffer_alloc() - buffer %d allready allocated!?\n",
328                                 ZR_DEVNAME(zr), i);
329
330                 //udelay(20);
331                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
332                         /* Use kmalloc */
333
334                         mem = kmalloc(fh->v4l_buffers.buffer_size, GFP_KERNEL);
335                         if (!mem) {
336                                 dprintk(1,
337                                         KERN_ERR
338                                         "%s: v4l_fbuffer_alloc() - kmalloc for V4L buf %d failed\n",
339                                         ZR_DEVNAME(zr), i);
340                                 v4l_fbuffer_free(file);
341                                 return -ENOBUFS;
342                         }
343                         fh->v4l_buffers.buffer[i].fbuffer = mem;
344                         fh->v4l_buffers.buffer[i].fbuffer_phys =
345                             virt_to_phys(mem);
346                         fh->v4l_buffers.buffer[i].fbuffer_bus =
347                             virt_to_bus(mem);
348                         for (off = 0; off < fh->v4l_buffers.buffer_size;
349                              off += PAGE_SIZE)
350                                 SetPageReserved(MAP_NR(mem + off));
351                         dprintk(4,
352                                 KERN_INFO
353                                 "%s: v4l_fbuffer_alloc() - V4L frame %d mem 0x%lx (bus: 0x%lx)\n",
354                                 ZR_DEVNAME(zr), i, (unsigned long) mem,
355                                 virt_to_bus(mem));
356                 } else {
357
358                         /* Use high memory which has been left at boot time */
359
360                         /* Ok., Ok. this is an evil hack - we make
361                          * the assumption that physical addresses are
362                          * the same as bus addresses (true at least
363                          * for Intel processors). The whole method of
364                          * obtaining and using this memory is not very
365                          * nice - but I hope it saves some poor users
366                          * from kernel hacking, which might have even
367                          * more evil results */
368
369                         if (i == 0) {
370                                 int size =
371                                     fh->v4l_buffers.num_buffers *
372                                     fh->v4l_buffers.buffer_size;
373
374                                 pmem = get_high_mem(size);
375                                 if (pmem == 0) {
376                                         dprintk(1,
377                                                 KERN_ERR
378                                                 "%s: v4l_fbuffer_alloc() - get_high_mem (size = %d KB) for V4L bufs failed\n",
379                                                 ZR_DEVNAME(zr), size >> 10);
380                                         return -ENOBUFS;
381                                 }
382                                 fh->v4l_buffers.buffer[0].fbuffer = NULL;
383                                 fh->v4l_buffers.buffer[0].fbuffer_phys = pmem;
384                                 fh->v4l_buffers.buffer[0].fbuffer_bus = pmem;
385                                 dprintk(4,
386                                         KERN_INFO
387                                         "%s: v4l_fbuffer_alloc() - using %d KB high memory\n",
388                                         ZR_DEVNAME(zr), size >> 10);
389                         } else {
390                                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
391                                 fh->v4l_buffers.buffer[i].fbuffer_phys =
392                                     pmem + i * fh->v4l_buffers.buffer_size;
393                                 fh->v4l_buffers.buffer[i].fbuffer_bus =
394                                     pmem + i * fh->v4l_buffers.buffer_size;
395                         }
396                 }
397         }
398
399         fh->v4l_buffers.allocated = 1;
400
401         return 0;
402 }
403
404 /* free the V4L grab buffers */
405 static void
406 v4l_fbuffer_free (struct file *file)
407 {
408         struct zoran_fh *fh = file->private_data;
409         struct zoran *zr = fh->zr;
410         int i, off;
411         unsigned char *mem;
412
413         dprintk(4, KERN_INFO "%s: v4l_fbuffer_free()\n", ZR_DEVNAME(zr));
414
415         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
416                 if (!fh->v4l_buffers.buffer[i].fbuffer)
417                         continue;
418
419                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
420                         mem = fh->v4l_buffers.buffer[i].fbuffer;
421                         for (off = 0; off < fh->v4l_buffers.buffer_size;
422                              off += PAGE_SIZE)
423                                 ClearPageReserved(MAP_NR(mem + off));
424                         kfree((void *) fh->v4l_buffers.buffer[i].fbuffer);
425                 }
426                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
427         }
428
429         fh->v4l_buffers.allocated = 0;
430         fh->v4l_buffers.ready_to_be_freed = 0;
431 }
432
433 /*
434  *   Allocate the MJPEG grab buffers.
435  *
436  *   If the requested buffer size is smaller than MAX_KMALLOC_MEM,
437  *   kmalloc is used to request a physically contiguous area,
438  *   else we allocate the memory in framgents with get_zeroed_page.
439  *
440  *   If a Natoma chipset is present and this is a revision 1 zr36057,
441  *   each MJPEG buffer needs to be physically contiguous.
442  *   (RJ: This statement is from Dave Perks' original driver,
443  *   I could never check it because I have a zr36067)
444  *   The driver cares about this because it reduces the buffer
445  *   size to MAX_KMALLOC_MEM in that case (which forces contiguous allocation).
446  *
447  *   RJ: The contents grab buffers needs never be accessed in the driver.
448  *       Therefore there is no need to allocate them with vmalloc in order
449  *       to get a contiguous virtual memory space.
450  *       I don't understand why many other drivers first allocate them with
451  *       vmalloc (which uses internally also get_zeroed_page, but delivers you
452  *       virtual addresses) and then again have to make a lot of efforts
453  *       to get the physical address.
454  *
455  *   Ben Capper:
456  *       On big-endian architectures (such as ppc) some extra steps
457  *       are needed. When reading and writing to the stat_com array
458  *       and fragment buffers, the device expects to see little-
459  *       endian values. The use of cpu_to_le32() and le32_to_cpu()
460  *       in this function (and one or two others in zoran_device.c)
461  *       ensure that these values are always stored in little-endian
462  *       form, regardless of architecture. The zr36057 does Very Bad
463  *       Things on big endian architectures if the stat_com array
464  *       and fragment buffers are not little-endian.
465  */
466
467 static int
468 jpg_fbuffer_alloc (struct file *file)
469 {
470         struct zoran_fh *fh = file->private_data;
471         struct zoran *zr = fh->zr;
472         int i, j, off;
473         unsigned long mem;
474
475         /* we might have old buffers lying around */
476         if (fh->jpg_buffers.ready_to_be_freed) {
477                 jpg_fbuffer_free(file);
478         }
479
480         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
481                 if (fh->jpg_buffers.buffer[i].frag_tab)
482                         dprintk(2,
483                                 KERN_WARNING
484                                 "%s: jpg_fbuffer_alloc() - buffer %d allready allocated!?\n",
485                                 ZR_DEVNAME(zr), i);
486
487                 /* Allocate fragment table for this buffer */
488
489                 mem = get_zeroed_page(GFP_KERNEL);
490                 if (mem == 0) {
491                         dprintk(1,
492                                 KERN_ERR
493                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page (frag_tab) failed for buffer %d\n",
494                                 ZR_DEVNAME(zr), i);
495                         jpg_fbuffer_free(file);
496                         return -ENOBUFS;
497                 }
498                 fh->jpg_buffers.buffer[i].frag_tab = (__le32 *) mem;
499                 fh->jpg_buffers.buffer[i].frag_tab_bus =
500                     virt_to_bus((void *) mem);
501
502                 //if (alloc_contig) {
503                 if (fh->jpg_buffers.need_contiguous) {
504                         mem =
505                             (unsigned long) kmalloc(fh->jpg_buffers.
506                                                     buffer_size,
507                                                     GFP_KERNEL);
508                         if (mem == 0) {
509                                 dprintk(1,
510                                         KERN_ERR
511                                         "%s: jpg_fbuffer_alloc() - kmalloc failed for buffer %d\n",
512                                         ZR_DEVNAME(zr), i);
513                                 jpg_fbuffer_free(file);
514                                 return -ENOBUFS;
515                         }
516                         fh->jpg_buffers.buffer[i].frag_tab[0] =
517                             cpu_to_le32(virt_to_bus((void *) mem));
518                         fh->jpg_buffers.buffer[i].frag_tab[1] =
519                             cpu_to_le32(((fh->jpg_buffers.buffer_size / 4) << 1) | 1);
520                         for (off = 0; off < fh->jpg_buffers.buffer_size;
521                              off += PAGE_SIZE)
522                                 SetPageReserved(MAP_NR(mem + off));
523                 } else {
524                         /* jpg_bufsize is allreay page aligned */
525                         for (j = 0;
526                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
527                              j++) {
528                                 mem = get_zeroed_page(GFP_KERNEL);
529                                 if (mem == 0) {
530                                         dprintk(1,
531                                                 KERN_ERR
532                                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page failed for buffer %d\n",
533                                                 ZR_DEVNAME(zr), i);
534                                         jpg_fbuffer_free(file);
535                                         return -ENOBUFS;
536                                 }
537
538                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
539                                     cpu_to_le32(virt_to_bus((void *) mem));
540                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
541                                                                    1] =
542                                     cpu_to_le32((PAGE_SIZE / 4) << 1);
543                                 SetPageReserved(MAP_NR(mem));
544                         }
545
546                         fh->jpg_buffers.buffer[i].frag_tab[2 * j - 1] |= cpu_to_le32(1);
547                 }
548         }
549
550         dprintk(4,
551                 KERN_DEBUG "%s: jpg_fbuffer_alloc() - %d KB allocated\n",
552                 ZR_DEVNAME(zr),
553                 (fh->jpg_buffers.num_buffers *
554                  fh->jpg_buffers.buffer_size) >> 10);
555
556         fh->jpg_buffers.allocated = 1;
557
558         return 0;
559 }
560
561 /* free the MJPEG grab buffers */
562 static void
563 jpg_fbuffer_free (struct file *file)
564 {
565         struct zoran_fh *fh = file->private_data;
566         struct zoran *zr = fh->zr;
567         int i, j, off;
568         unsigned char *mem;
569
570         dprintk(4, KERN_DEBUG "%s: jpg_fbuffer_free()\n", ZR_DEVNAME(zr));
571
572         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
573                 if (!fh->jpg_buffers.buffer[i].frag_tab)
574                         continue;
575
576                 //if (alloc_contig) {
577                 if (fh->jpg_buffers.need_contiguous) {
578                         if (fh->jpg_buffers.buffer[i].frag_tab[0]) {
579                                 mem = (unsigned char *) bus_to_virt(le32_to_cpu(
580                                         fh->jpg_buffers.buffer[i].frag_tab[0]));
581                                 for (off = 0;
582                                      off < fh->jpg_buffers.buffer_size;
583                                      off += PAGE_SIZE)
584                                         ClearPageReserved(MAP_NR
585                                                           (mem + off));
586                                 kfree(mem);
587                                 fh->jpg_buffers.buffer[i].frag_tab[0] = 0;
588                                 fh->jpg_buffers.buffer[i].frag_tab[1] = 0;
589                         }
590                 } else {
591                         for (j = 0;
592                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
593                              j++) {
594                                 if (!fh->jpg_buffers.buffer[i].
595                                     frag_tab[2 * j])
596                                         break;
597                                 ClearPageReserved(MAP_NR
598                                                   (bus_to_virt
599                                                    (le32_to_cpu
600                                                     (fh->jpg_buffers.
601                                                      buffer[i].frag_tab[2 *
602                                                                        j]))));
603                                 free_page((unsigned long)
604                                           bus_to_virt
605                                                   (le32_to_cpu
606                                                    (fh->jpg_buffers.
607                                                       buffer[i].
608                                                       frag_tab[2 * j])));
609                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
610                                     0;
611                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
612                                                                    1] = 0;
613                         }
614                 }
615
616                 free_page((unsigned long) fh->jpg_buffers.buffer[i].
617                           frag_tab);
618                 fh->jpg_buffers.buffer[i].frag_tab = NULL;
619         }
620
621         fh->jpg_buffers.allocated = 0;
622         fh->jpg_buffers.ready_to_be_freed = 0;
623 }
624
625 /*
626  *   V4L Buffer grabbing
627  */
628
629 static int
630 zoran_v4l_set_format (struct file               *file,
631                       int                        width,
632                       int                        height,
633                       const struct zoran_format *format)
634 {
635         struct zoran_fh *fh = file->private_data;
636         struct zoran *zr = fh->zr;
637         int bpp;
638
639         /* Check size and format of the grab wanted */
640
641         if (height < BUZ_MIN_HEIGHT || width < BUZ_MIN_WIDTH ||
642             height > BUZ_MAX_HEIGHT || width > BUZ_MAX_WIDTH) {
643                 dprintk(1,
644                         KERN_ERR
645                         "%s: v4l_set_format() - wrong frame size (%dx%d)\n",
646                         ZR_DEVNAME(zr), width, height);
647                 return -EINVAL;
648         }
649
650         bpp = (format->depth + 7) / 8;
651
652         /* Check against available buffer size */
653         if (height * width * bpp > fh->v4l_buffers.buffer_size) {
654                 dprintk(1,
655                         KERN_ERR
656                         "%s: v4l_set_format() - video buffer size (%d kB) is too small\n",
657                         ZR_DEVNAME(zr), fh->v4l_buffers.buffer_size >> 10);
658                 return -EINVAL;
659         }
660
661         /* The video front end needs 4-byte alinged line sizes */
662
663         if ((bpp == 2 && (width & 1)) || (bpp == 3 && (width & 3))) {
664                 dprintk(1,
665                         KERN_ERR
666                         "%s: v4l_set_format() - wrong frame alingment\n",
667                         ZR_DEVNAME(zr));
668                 return -EINVAL;
669         }
670
671         fh->v4l_settings.width = width;
672         fh->v4l_settings.height = height;
673         fh->v4l_settings.format = format;
674         fh->v4l_settings.bytesperline = bpp * fh->v4l_settings.width;
675
676         return 0;
677 }
678
679 static int
680 zoran_v4l_queue_frame (struct file *file,
681                        int          num)
682 {
683         struct zoran_fh *fh = file->private_data;
684         struct zoran *zr = fh->zr;
685         unsigned long flags;
686         int res = 0;
687
688         if (!fh->v4l_buffers.allocated) {
689                 dprintk(1,
690                         KERN_ERR
691                         "%s: v4l_queue_frame() - buffers not yet allocated\n",
692                         ZR_DEVNAME(zr));
693                 res = -ENOMEM;
694         }
695
696         /* No grabbing outside the buffer range! */
697         if (num >= fh->v4l_buffers.num_buffers || num < 0) {
698                 dprintk(1,
699                         KERN_ERR
700                         "%s: v4l_queue_frame() - buffer %d is out of range\n",
701                         ZR_DEVNAME(zr), num);
702                 res = -EINVAL;
703         }
704
705         spin_lock_irqsave(&zr->spinlock, flags);
706
707         if (fh->v4l_buffers.active == ZORAN_FREE) {
708                 if (zr->v4l_buffers.active == ZORAN_FREE) {
709                         zr->v4l_buffers = fh->v4l_buffers;
710                         fh->v4l_buffers.active = ZORAN_ACTIVE;
711                 } else {
712                         dprintk(1,
713                                 KERN_ERR
714                                 "%s: v4l_queue_frame() - another session is already capturing\n",
715                                 ZR_DEVNAME(zr));
716                         res = -EBUSY;
717                 }
718         }
719
720         /* make sure a grab isn't going on currently with this buffer */
721         if (!res) {
722                 switch (zr->v4l_buffers.buffer[num].state) {
723                 default:
724                 case BUZ_STATE_PEND:
725                         if (zr->v4l_buffers.active == ZORAN_FREE) {
726                                 fh->v4l_buffers.active = ZORAN_FREE;
727                                 zr->v4l_buffers.allocated = 0;
728                         }
729                         res = -EBUSY;   /* what are you doing? */
730                         break;
731                 case BUZ_STATE_DONE:
732                         dprintk(2,
733                                 KERN_WARNING
734                                 "%s: v4l_queue_frame() - queueing buffer %d in state DONE!?\n",
735                                 ZR_DEVNAME(zr), num);
736                 case BUZ_STATE_USER:
737                         /* since there is at least one unused buffer there's room for at least
738                          * one more pend[] entry */
739                         zr->v4l_pend[zr->v4l_pend_head++ &
740                                         V4L_MASK_FRAME] = num;
741                         zr->v4l_buffers.buffer[num].state = BUZ_STATE_PEND;
742                         zr->v4l_buffers.buffer[num].bs.length =
743                             fh->v4l_settings.bytesperline *
744                             zr->v4l_settings.height;
745                         fh->v4l_buffers.buffer[num] =
746                             zr->v4l_buffers.buffer[num];
747                         break;
748                 }
749         }
750
751         spin_unlock_irqrestore(&zr->spinlock, flags);
752
753         if (!res && zr->v4l_buffers.active == ZORAN_FREE)
754                 zr->v4l_buffers.active = fh->v4l_buffers.active;
755
756         return res;
757 }
758
759 static int
760 v4l_grab (struct file       *file,
761           struct video_mmap *mp)
762 {
763         struct zoran_fh *fh = file->private_data;
764         struct zoran *zr = fh->zr;
765         int res = 0, i;
766
767         for (i = 0; i < NUM_FORMATS; i++) {
768                 if (zoran_formats[i].palette == mp->format &&
769                     zoran_formats[i].flags & ZORAN_FORMAT_CAPTURE &&
770                     !(zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED))
771                         break;
772         }
773         if (i == NUM_FORMATS || zoran_formats[i].depth == 0) {
774                 dprintk(1,
775                         KERN_ERR
776                         "%s: v4l_grab() - wrong bytes-per-pixel format\n",
777                         ZR_DEVNAME(zr));
778                 return -EINVAL;
779         }
780
781         /*
782          * To minimize the time spent in the IRQ routine, we avoid setting up
783          * the video front end there.
784          * If this grab has different parameters from a running streaming capture
785          * we stop the streaming capture and start it over again.
786          */
787         if (zr->v4l_memgrab_active &&
788             (zr->v4l_settings.width != mp->width ||
789              zr->v4l_settings.height != mp->height ||
790              zr->v4l_settings.format->palette != mp->format)) {
791                 res = wait_grab_pending(zr);
792                 if (res)
793                         return res;
794         }
795         if ((res = zoran_v4l_set_format(file,
796                                         mp->width,
797                                         mp->height,
798                                         &zoran_formats[i])))
799                 return res;
800         zr->v4l_settings = fh->v4l_settings;
801
802         /* queue the frame in the pending queue */
803         if ((res = zoran_v4l_queue_frame(file, mp->frame))) {
804                 fh->v4l_buffers.active = ZORAN_FREE;
805                 return res;
806         }
807
808         /* put the 36057 into frame grabbing mode */
809         if (!res && !zr->v4l_memgrab_active)
810                 zr36057_set_memgrab(zr, 1);
811
812         //dprintk(4, KERN_INFO "%s: Frame grab 3...\n", ZR_DEVNAME(zr));
813
814         return res;
815 }
816
817 /*
818  * Sync on a V4L buffer
819  */
820
821 static int
822 v4l_sync (struct file *file,
823           int          frame)
824 {
825         struct zoran_fh *fh = file->private_data;
826         struct zoran *zr = fh->zr;
827         unsigned long flags;
828
829         if (fh->v4l_buffers.active == ZORAN_FREE) {
830                 dprintk(1,
831                         KERN_ERR
832                         "%s: v4l_sync() - no grab active for this session\n",
833                         ZR_DEVNAME(zr));
834                 return -EINVAL;
835         }
836
837         /* check passed-in frame number */
838         if (frame >= fh->v4l_buffers.num_buffers || frame < 0) {
839                 dprintk(1,
840                         KERN_ERR "%s: v4l_sync() - frame %d is invalid\n",
841                         ZR_DEVNAME(zr), frame);
842                 return -EINVAL;
843         }
844
845         /* Check if is buffer was queued at all */
846         if (zr->v4l_buffers.buffer[frame].state == BUZ_STATE_USER) {
847                 dprintk(1,
848                         KERN_ERR
849                         "%s: v4l_sync() - attempt to sync on a buffer which was not queued?\n",
850                         ZR_DEVNAME(zr));
851                 return -EPROTO;
852         }
853
854         /* wait on this buffer to get ready */
855         if (!wait_event_interruptible_timeout(zr->v4l_capq,
856                                 (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_PEND),
857                                 10*HZ))
858                 return -ETIME;
859         if (signal_pending(current))
860                 return -ERESTARTSYS;
861
862         /* buffer should now be in BUZ_STATE_DONE */
863         if (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_DONE)
864                 dprintk(2,
865                         KERN_ERR "%s: v4l_sync() - internal state error\n",
866                         ZR_DEVNAME(zr));
867
868         zr->v4l_buffers.buffer[frame].state = BUZ_STATE_USER;
869         fh->v4l_buffers.buffer[frame] = zr->v4l_buffers.buffer[frame];
870
871         spin_lock_irqsave(&zr->spinlock, flags);
872
873         /* Check if streaming capture has finished */
874         if (zr->v4l_pend_tail == zr->v4l_pend_head) {
875                 zr36057_set_memgrab(zr, 0);
876                 if (zr->v4l_buffers.active == ZORAN_ACTIVE) {
877                         fh->v4l_buffers.active = zr->v4l_buffers.active =
878                             ZORAN_FREE;
879                         zr->v4l_buffers.allocated = 0;
880                 }
881         }
882
883         spin_unlock_irqrestore(&zr->spinlock, flags);
884
885         return 0;
886 }
887
888 /*
889  *   Queue a MJPEG buffer for capture/playback
890  */
891
892 static int
893 zoran_jpg_queue_frame (struct file          *file,
894                        int                   num,
895                        enum zoran_codec_mode mode)
896 {
897         struct zoran_fh *fh = file->private_data;
898         struct zoran *zr = fh->zr;
899         unsigned long flags;
900         int res = 0;
901
902         /* Check if buffers are allocated */
903         if (!fh->jpg_buffers.allocated) {
904                 dprintk(1,
905                         KERN_ERR
906                         "%s: jpg_queue_frame() - buffers not yet allocated\n",
907                         ZR_DEVNAME(zr));
908                 return -ENOMEM;
909         }
910
911         /* No grabbing outside the buffer range! */
912         if (num >= fh->jpg_buffers.num_buffers || num < 0) {
913                 dprintk(1,
914                         KERN_ERR
915                         "%s: jpg_queue_frame() - buffer %d out of range\n",
916                         ZR_DEVNAME(zr), num);
917                 return -EINVAL;
918         }
919
920         /* what is the codec mode right now? */
921         if (zr->codec_mode == BUZ_MODE_IDLE) {
922                 zr->jpg_settings = fh->jpg_settings;
923         } else if (zr->codec_mode != mode) {
924                 /* wrong codec mode active - invalid */
925                 dprintk(1,
926                         KERN_ERR
927                         "%s: jpg_queue_frame() - codec in wrong mode\n",
928                         ZR_DEVNAME(zr));
929                 return -EINVAL;
930         }
931
932         if (fh->jpg_buffers.active == ZORAN_FREE) {
933                 if (zr->jpg_buffers.active == ZORAN_FREE) {
934                         zr->jpg_buffers = fh->jpg_buffers;
935                         fh->jpg_buffers.active = ZORAN_ACTIVE;
936                 } else {
937                         dprintk(1,
938                                 KERN_ERR
939                                 "%s: jpg_queue_frame() - another session is already capturing\n",
940                                 ZR_DEVNAME(zr));
941                         res = -EBUSY;
942                 }
943         }
944
945         if (!res && zr->codec_mode == BUZ_MODE_IDLE) {
946                 /* Ok load up the jpeg codec */
947                 zr36057_enable_jpg(zr, mode);
948         }
949
950         spin_lock_irqsave(&zr->spinlock, flags);
951
952         if (!res) {
953                 switch (zr->jpg_buffers.buffer[num].state) {
954                 case BUZ_STATE_DONE:
955                         dprintk(2,
956                                 KERN_WARNING
957                                 "%s: jpg_queue_frame() - queing frame in BUZ_STATE_DONE state!?\n",
958                                 ZR_DEVNAME(zr));
959                 case BUZ_STATE_USER:
960                         /* since there is at least one unused buffer there's room for at
961                          *least one more pend[] entry */
962                         zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] =
963                             num;
964                         zr->jpg_buffers.buffer[num].state = BUZ_STATE_PEND;
965                         fh->jpg_buffers.buffer[num] =
966                             zr->jpg_buffers.buffer[num];
967                         zoran_feed_stat_com(zr);
968                         break;
969                 default:
970                 case BUZ_STATE_DMA:
971                 case BUZ_STATE_PEND:
972                         if (zr->jpg_buffers.active == ZORAN_FREE) {
973                                 fh->jpg_buffers.active = ZORAN_FREE;
974                                 zr->jpg_buffers.allocated = 0;
975                         }
976                         res = -EBUSY;   /* what are you doing? */
977                         break;
978                 }
979         }
980
981         spin_unlock_irqrestore(&zr->spinlock, flags);
982
983         if (!res && zr->jpg_buffers.active == ZORAN_FREE) {
984                 zr->jpg_buffers.active = fh->jpg_buffers.active;
985         }
986
987         return res;
988 }
989
990 static int
991 jpg_qbuf (struct file          *file,
992           int                   frame,
993           enum zoran_codec_mode mode)
994 {
995         struct zoran_fh *fh = file->private_data;
996         struct zoran *zr = fh->zr;
997         int res = 0;
998
999         /* Does the user want to stop streaming? */
1000         if (frame < 0) {
1001                 if (zr->codec_mode == mode) {
1002                         if (fh->jpg_buffers.active == ZORAN_FREE) {
1003                                 dprintk(1,
1004                                         KERN_ERR
1005                                         "%s: jpg_qbuf(-1) - session not active\n",
1006                                         ZR_DEVNAME(zr));
1007                                 return -EINVAL;
1008                         }
1009                         fh->jpg_buffers.active = zr->jpg_buffers.active =
1010                             ZORAN_FREE;
1011                         zr->jpg_buffers.allocated = 0;
1012                         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1013                         return 0;
1014                 } else {
1015                         dprintk(1,
1016                                 KERN_ERR
1017                                 "%s: jpg_qbuf() - stop streaming but not in streaming mode\n",
1018                                 ZR_DEVNAME(zr));
1019                         return -EINVAL;
1020                 }
1021         }
1022
1023         if ((res = zoran_jpg_queue_frame(file, frame, mode)))
1024                 return res;
1025
1026         /* Start the jpeg codec when the first frame is queued  */
1027         if (!res && zr->jpg_que_head == 1)
1028                 jpeg_start(zr);
1029
1030         return res;
1031 }
1032
1033 /*
1034  *   Sync on a MJPEG buffer
1035  */
1036
1037 static int
1038 jpg_sync (struct file       *file,
1039           struct zoran_sync *bs)
1040 {
1041         struct zoran_fh *fh = file->private_data;
1042         struct zoran *zr = fh->zr;
1043         unsigned long flags;
1044         int frame;
1045
1046         if (fh->jpg_buffers.active == ZORAN_FREE) {
1047                 dprintk(1,
1048                         KERN_ERR
1049                         "%s: jpg_sync() - capture is not currently active\n",
1050                         ZR_DEVNAME(zr));
1051                 return -EINVAL;
1052         }
1053         if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
1054             zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
1055                 dprintk(1,
1056                         KERN_ERR
1057                         "%s: jpg_sync() - codec not in streaming mode\n",
1058                         ZR_DEVNAME(zr));
1059                 return -EINVAL;
1060         }
1061         if (!wait_event_interruptible_timeout(zr->jpg_capq,
1062                         (zr->jpg_que_tail != zr->jpg_dma_tail ||
1063                          zr->jpg_dma_tail == zr->jpg_dma_head),
1064                         10*HZ)) {
1065                 int isr;
1066
1067                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1068                 udelay(1);
1069                 zr->codec->control(zr->codec, CODEC_G_STATUS,
1070                                            sizeof(isr), &isr);
1071                 dprintk(1,
1072                         KERN_ERR
1073                         "%s: jpg_sync() - timeout: codec isr=0x%02x\n",
1074                         ZR_DEVNAME(zr), isr);
1075
1076                 return -ETIME;
1077
1078         }
1079         if (signal_pending(current))
1080                 return -ERESTARTSYS;
1081
1082         spin_lock_irqsave(&zr->spinlock, flags);
1083
1084         if (zr->jpg_dma_tail != zr->jpg_dma_head)
1085                 frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
1086         else
1087                 frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
1088
1089         /* buffer should now be in BUZ_STATE_DONE */
1090         if (zr->jpg_buffers.buffer[frame].state != BUZ_STATE_DONE)
1091                 dprintk(2,
1092                         KERN_ERR "%s: jpg_sync() - internal state error\n",
1093                         ZR_DEVNAME(zr));
1094
1095         *bs = zr->jpg_buffers.buffer[frame].bs;
1096         bs->frame = frame;
1097         zr->jpg_buffers.buffer[frame].state = BUZ_STATE_USER;
1098         fh->jpg_buffers.buffer[frame] = zr->jpg_buffers.buffer[frame];
1099
1100         spin_unlock_irqrestore(&zr->spinlock, flags);
1101
1102         return 0;
1103 }
1104
1105 static void
1106 zoran_open_init_session (struct file *file)
1107 {
1108         int i;
1109         struct zoran_fh *fh = file->private_data;
1110         struct zoran *zr = fh->zr;
1111
1112         /* Per default, map the V4L Buffers */
1113         fh->map_mode = ZORAN_MAP_MODE_RAW;
1114
1115         /* take over the card's current settings */
1116         fh->overlay_settings = zr->overlay_settings;
1117         fh->overlay_settings.is_set = 0;
1118         fh->overlay_settings.format = zr->overlay_settings.format;
1119         fh->overlay_active = ZORAN_FREE;
1120
1121         /* v4l settings */
1122         fh->v4l_settings = zr->v4l_settings;
1123
1124         /* v4l_buffers */
1125         memset(&fh->v4l_buffers, 0, sizeof(struct zoran_v4l_struct));
1126         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1127                 fh->v4l_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1128                 fh->v4l_buffers.buffer[i].bs.frame = i;
1129         }
1130         fh->v4l_buffers.allocated = 0;
1131         fh->v4l_buffers.ready_to_be_freed = 0;
1132         fh->v4l_buffers.active = ZORAN_FREE;
1133         fh->v4l_buffers.buffer_size = v4l_bufsize;
1134         fh->v4l_buffers.num_buffers = v4l_nbufs;
1135
1136         /* jpg settings */
1137         fh->jpg_settings = zr->jpg_settings;
1138
1139         /* jpg_buffers */
1140         memset(&fh->jpg_buffers, 0, sizeof(struct zoran_jpg_struct));
1141         for (i = 0; i < BUZ_MAX_FRAME; i++) {
1142                 fh->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1143                 fh->jpg_buffers.buffer[i].bs.frame = i;
1144         }
1145         fh->jpg_buffers.need_contiguous = zr->jpg_buffers.need_contiguous;
1146         fh->jpg_buffers.allocated = 0;
1147         fh->jpg_buffers.ready_to_be_freed = 0;
1148         fh->jpg_buffers.active = ZORAN_FREE;
1149         fh->jpg_buffers.buffer_size = jpg_bufsize;
1150         fh->jpg_buffers.num_buffers = jpg_nbufs;
1151 }
1152
1153 static void
1154 zoran_close_end_session (struct file *file)
1155 {
1156         struct zoran_fh *fh = file->private_data;
1157         struct zoran *zr = fh->zr;
1158
1159         /* overlay */
1160         if (fh->overlay_active != ZORAN_FREE) {
1161                 fh->overlay_active = zr->overlay_active = ZORAN_FREE;
1162                 zr->v4l_overlay_active = 0;
1163                 if (!zr->v4l_memgrab_active)
1164                         zr36057_overlay(zr, 0);
1165                 zr->overlay_mask = NULL;
1166         }
1167
1168         /* v4l capture */
1169         if (fh->v4l_buffers.active != ZORAN_FREE) {
1170                 unsigned long flags;
1171
1172                 spin_lock_irqsave(&zr->spinlock, flags);
1173                 zr36057_set_memgrab(zr, 0);
1174                 zr->v4l_buffers.allocated = 0;
1175                 zr->v4l_buffers.active = fh->v4l_buffers.active =
1176                     ZORAN_FREE;
1177                 spin_unlock_irqrestore(&zr->spinlock, flags);
1178         }
1179
1180         /* v4l buffers */
1181         if (fh->v4l_buffers.allocated ||
1182             fh->v4l_buffers.ready_to_be_freed) {
1183                 v4l_fbuffer_free(file);
1184         }
1185
1186         /* jpg capture */
1187         if (fh->jpg_buffers.active != ZORAN_FREE) {
1188                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1189                 zr->jpg_buffers.allocated = 0;
1190                 zr->jpg_buffers.active = fh->jpg_buffers.active =
1191                     ZORAN_FREE;
1192         }
1193
1194         /* jpg buffers */
1195         if (fh->jpg_buffers.allocated ||
1196             fh->jpg_buffers.ready_to_be_freed) {
1197                 jpg_fbuffer_free(file);
1198         }
1199 }
1200
1201 /*
1202  *   Open a zoran card. Right now the flags stuff is just playing
1203  */
1204
1205 static int
1206 zoran_open (struct inode *inode,
1207             struct file  *file)
1208 {
1209         unsigned int minor = iminor(inode);
1210         struct zoran *zr = NULL;
1211         struct zoran_fh *fh;
1212         int i, res, first_open = 0, have_module_locks = 0;
1213
1214         /* find the device */
1215         for (i = 0; i < zoran_num; i++) {
1216                 if (zoran[i]->video_dev->minor == minor) {
1217                         zr = zoran[i];
1218                         break;
1219                 }
1220         }
1221
1222         if (!zr) {
1223                 dprintk(1, KERN_ERR "%s: device not found!\n", ZORAN_NAME);
1224                 res = -ENODEV;
1225                 goto open_unlock_and_return;
1226         }
1227
1228         /* see fs/device.c - the kernel already locks during open(),
1229          * so locking ourselves only causes deadlocks */
1230         /*mutex_lock(&zr->resource_lock);*/
1231
1232         if (!zr->decoder) {
1233                 dprintk(1,
1234                         KERN_ERR "%s: no TV decoder loaded for device!\n",
1235                         ZR_DEVNAME(zr));
1236                 res = -EIO;
1237                 goto open_unlock_and_return;
1238         }
1239
1240         /* try to grab a module lock */
1241         if (!try_module_get(THIS_MODULE)) {
1242                 dprintk(1,
1243                         KERN_ERR
1244                         "%s: failed to acquire my own lock! PANIC!\n",
1245                         ZR_DEVNAME(zr));
1246                 res = -ENODEV;
1247                 goto open_unlock_and_return;
1248         }
1249         if (!try_module_get(zr->decoder->driver->driver.owner)) {
1250                 dprintk(1,
1251                         KERN_ERR
1252                         "%s: failed to grab ownership of i2c decoder\n",
1253                         ZR_DEVNAME(zr));
1254                 res = -EIO;
1255                 module_put(THIS_MODULE);
1256                 goto open_unlock_and_return;
1257         }
1258         if (zr->encoder &&
1259             !try_module_get(zr->encoder->driver->driver.owner)) {
1260                 dprintk(1,
1261                         KERN_ERR
1262                         "%s: failed to grab ownership of i2c encoder\n",
1263                         ZR_DEVNAME(zr));
1264                 res = -EIO;
1265                 module_put(zr->decoder->driver->driver.owner);
1266                 module_put(THIS_MODULE);
1267                 goto open_unlock_and_return;
1268         }
1269
1270         have_module_locks = 1;
1271
1272         if (zr->user >= 2048) {
1273                 dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
1274                         ZR_DEVNAME(zr), zr->user);
1275                 res = -EBUSY;
1276                 goto open_unlock_and_return;
1277         }
1278
1279         dprintk(1, KERN_INFO "%s: zoran_open(%s, pid=[%d]), users(-)=%d\n",
1280                 ZR_DEVNAME(zr), current->comm, task_pid_nr(current), zr->user);
1281
1282         /* now, create the open()-specific file_ops struct */
1283         fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
1284         if (!fh) {
1285                 dprintk(1,
1286                         KERN_ERR
1287                         "%s: zoran_open() - allocation of zoran_fh failed\n",
1288                         ZR_DEVNAME(zr));
1289                 res = -ENOMEM;
1290                 goto open_unlock_and_return;
1291         }
1292         /* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
1293          * on norm-change! */
1294         fh->overlay_mask =
1295             kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL);
1296         if (!fh->overlay_mask) {
1297                 dprintk(1,
1298                         KERN_ERR
1299                         "%s: zoran_open() - allocation of overlay_mask failed\n",
1300                         ZR_DEVNAME(zr));
1301                 kfree(fh);
1302                 res = -ENOMEM;
1303                 goto open_unlock_and_return;
1304         }
1305
1306         if (zr->user++ == 0)
1307                 first_open = 1;
1308
1309         /*mutex_unlock(&zr->resource_lock);*/
1310
1311         /* default setup - TODO: look at flags */
1312         if (first_open) {       /* First device open */
1313                 zr36057_restart(zr);
1314                 zoran_open_init_params(zr);
1315                 zoran_init_hardware(zr);
1316
1317                 btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
1318         }
1319
1320         /* set file_ops stuff */
1321         file->private_data = fh;
1322         fh->zr = zr;
1323         zoran_open_init_session(file);
1324
1325         return 0;
1326
1327 open_unlock_and_return:
1328         /* if we grabbed locks, release them accordingly */
1329         if (have_module_locks) {
1330                 module_put(zr->decoder->driver->driver.owner);
1331                 if (zr->encoder) {
1332                         module_put(zr->encoder->driver->driver.owner);
1333                 }
1334                 module_put(THIS_MODULE);
1335         }
1336
1337         /* if there's no device found, we didn't obtain the lock either */
1338         if (zr) {
1339                 /*mutex_unlock(&zr->resource_lock);*/
1340         }
1341
1342         return res;
1343 }
1344
1345 static int
1346 zoran_close (struct inode *inode,
1347              struct file  *file)
1348 {
1349         struct zoran_fh *fh = file->private_data;
1350         struct zoran *zr = fh->zr;
1351
1352         dprintk(1, KERN_INFO "%s: zoran_close(%s, pid=[%d]), users(+)=%d\n",
1353                 ZR_DEVNAME(zr), current->comm, task_pid_nr(current), zr->user);
1354
1355         /* kernel locks (fs/device.c), so don't do that ourselves
1356          * (prevents deadlocks) */
1357         /*mutex_lock(&zr->resource_lock);*/
1358
1359         zoran_close_end_session(file);
1360
1361         if (zr->user-- == 1) {  /* Last process */
1362                 /* Clean up JPEG process */
1363                 wake_up_interruptible(&zr->jpg_capq);
1364                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1365                 zr->jpg_buffers.allocated = 0;
1366                 zr->jpg_buffers.active = ZORAN_FREE;
1367
1368                 /* disable interrupts */
1369                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1370
1371                 if (zr36067_debug > 1)
1372                         print_interrupts(zr);
1373
1374                 /* Overlay off */
1375                 zr->v4l_overlay_active = 0;
1376                 zr36057_overlay(zr, 0);
1377                 zr->overlay_mask = NULL;
1378
1379                 /* capture off */
1380                 wake_up_interruptible(&zr->v4l_capq);
1381                 zr36057_set_memgrab(zr, 0);
1382                 zr->v4l_buffers.allocated = 0;
1383                 zr->v4l_buffers.active = ZORAN_FREE;
1384                 zoran_set_pci_master(zr, 0);
1385
1386                 if (!pass_through) {    /* Switch to color bar */
1387                         int zero = 0, two = 2;
1388                         decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1389                         encoder_command(zr, ENCODER_SET_INPUT, &two);
1390                 }
1391         }
1392
1393         file->private_data = NULL;
1394         kfree(fh->overlay_mask);
1395         kfree(fh);
1396
1397         /* release locks on the i2c modules */
1398         module_put(zr->decoder->driver->driver.owner);
1399         if (zr->encoder) {
1400                  module_put(zr->encoder->driver->driver.owner);
1401         }
1402         module_put(THIS_MODULE);
1403
1404         /*mutex_unlock(&zr->resource_lock);*/
1405
1406         dprintk(4, KERN_INFO "%s: zoran_close() done\n", ZR_DEVNAME(zr));
1407
1408         return 0;
1409 }
1410
1411
1412 static ssize_t
1413 zoran_read (struct file *file,
1414             char        __user *data,
1415             size_t       count,
1416             loff_t      *ppos)
1417 {
1418         /* we simply don't support read() (yet)... */
1419
1420         return -EINVAL;
1421 }
1422
1423 static ssize_t
1424 zoran_write (struct file *file,
1425              const char  __user *data,
1426              size_t       count,
1427              loff_t      *ppos)
1428 {
1429         /* ...and the same goes for write() */
1430
1431         return -EINVAL;
1432 }
1433
1434 static int
1435 setup_fbuffer (struct file               *file,
1436                void                      *base,
1437                const struct zoran_format *fmt,
1438                int                        width,
1439                int                        height,
1440                int                        bytesperline)
1441 {
1442         struct zoran_fh *fh = file->private_data;
1443         struct zoran *zr = fh->zr;
1444
1445         /* (Ronald) v4l/v4l2 guidelines */
1446         if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1447                 return -EPERM;
1448
1449         /* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
1450            ALi Magik (that needs very low latency while the card needs a
1451            higher value always) */
1452
1453         if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
1454                 return -ENXIO;
1455
1456         /* we need a bytesperline value, even if not given */
1457         if (!bytesperline)
1458                 bytesperline = width * ((fmt->depth + 7) & ~7) / 8;
1459
1460 #if 0
1461         if (zr->overlay_active) {
1462                 /* dzjee... stupid users... don't even bother to turn off
1463                  * overlay before changing the memory location...
1464                  * normally, we would return errors here. However, one of
1465                  * the tools that does this is... xawtv! and since xawtv
1466                  * is used by +/- 99% of the users, we'd rather be user-
1467                  * friendly and silently do as if nothing went wrong */
1468                 dprintk(3,
1469                         KERN_ERR
1470                         "%s: setup_fbuffer() - forced overlay turnoff because framebuffer changed\n",
1471                         ZR_DEVNAME(zr));
1472                 zr36057_overlay(zr, 0);
1473         }
1474 #endif
1475
1476         if (!(fmt->flags & ZORAN_FORMAT_OVERLAY)) {
1477                 dprintk(1,
1478                         KERN_ERR
1479                         "%s: setup_fbuffer() - no valid overlay format given\n",
1480                         ZR_DEVNAME(zr));
1481                 return -EINVAL;
1482         }
1483         if (height <= 0 || width <= 0 || bytesperline <= 0) {
1484                 dprintk(1,
1485                         KERN_ERR
1486                         "%s: setup_fbuffer() - invalid height/width/bpl value (%d|%d|%d)\n",
1487                         ZR_DEVNAME(zr), width, height, bytesperline);
1488                 return -EINVAL;
1489         }
1490         if (bytesperline & 3) {
1491                 dprintk(1,
1492                         KERN_ERR
1493                         "%s: setup_fbuffer() - bytesperline (%d) must be 4-byte aligned\n",
1494                         ZR_DEVNAME(zr), bytesperline);
1495                 return -EINVAL;
1496         }
1497
1498         zr->buffer.base = (void *) ((unsigned long) base & ~3);
1499         zr->buffer.height = height;
1500         zr->buffer.width = width;
1501         zr->buffer.depth = fmt->depth;
1502         zr->overlay_settings.format = fmt;
1503         zr->buffer.bytesperline = bytesperline;
1504
1505         /* The user should set new window parameters */
1506         zr->overlay_settings.is_set = 0;
1507
1508         return 0;
1509 }
1510
1511
1512 static int
1513 setup_window (struct file       *file,
1514               int                x,
1515               int                y,
1516               int                width,
1517               int                height,
1518               struct video_clip __user *clips,
1519               int                clipcount,
1520               void              __user *bitmap)
1521 {
1522         struct zoran_fh *fh = file->private_data;
1523         struct zoran *zr = fh->zr;
1524         struct video_clip *vcp = NULL;
1525         int on, end;
1526
1527
1528         if (!zr->buffer.base) {
1529                 dprintk(1,
1530                         KERN_ERR
1531                         "%s: setup_window() - frame buffer has to be set first\n",
1532                         ZR_DEVNAME(zr));
1533                 return -EINVAL;
1534         }
1535
1536         if (!fh->overlay_settings.format) {
1537                 dprintk(1,
1538                         KERN_ERR
1539                         "%s: setup_window() - no overlay format set\n",
1540                         ZR_DEVNAME(zr));
1541                 return -EINVAL;
1542         }
1543
1544         /*
1545          * The video front end needs 4-byte alinged line sizes, we correct that
1546          * silently here if necessary
1547          */
1548         if (zr->buffer.depth == 15 || zr->buffer.depth == 16) {
1549                 end = (x + width) & ~1; /* round down */
1550                 x = (x + 1) & ~1;       /* round up */
1551                 width = end - x;
1552         }
1553
1554         if (zr->buffer.depth == 24) {
1555                 end = (x + width) & ~3; /* round down */
1556                 x = (x + 3) & ~3;       /* round up */
1557                 width = end - x;
1558         }
1559
1560         if (width > BUZ_MAX_WIDTH)
1561                 width = BUZ_MAX_WIDTH;
1562         if (height > BUZ_MAX_HEIGHT)
1563                 height = BUZ_MAX_HEIGHT;
1564
1565         /* Check for vaild parameters */
1566         if (width < BUZ_MIN_WIDTH || height < BUZ_MIN_HEIGHT ||
1567             width > BUZ_MAX_WIDTH || height > BUZ_MAX_HEIGHT) {
1568                 dprintk(1,
1569                         KERN_ERR
1570                         "%s: setup_window() - width = %d or height = %d invalid\n",
1571                         ZR_DEVNAME(zr), width, height);
1572                 return -EINVAL;
1573         }
1574
1575         fh->overlay_settings.x = x;
1576         fh->overlay_settings.y = y;
1577         fh->overlay_settings.width = width;
1578         fh->overlay_settings.height = height;
1579         fh->overlay_settings.clipcount = clipcount;
1580
1581         /*
1582          * If an overlay is running, we have to switch it off
1583          * and switch it on again in order to get the new settings in effect.
1584          *
1585          * We also want to avoid that the overlay mask is written
1586          * when an overlay is running.
1587          */
1588
1589         on = zr->v4l_overlay_active && !zr->v4l_memgrab_active &&
1590             zr->overlay_active != ZORAN_FREE &&
1591             fh->overlay_active != ZORAN_FREE;
1592         if (on)
1593                 zr36057_overlay(zr, 0);
1594
1595         /*
1596          *   Write the overlay mask if clips are wanted.
1597          *   We prefer a bitmap.
1598          */
1599         if (bitmap) {
1600                 /* fake value - it just means we want clips */
1601                 fh->overlay_settings.clipcount = 1;
1602
1603                 if (copy_from_user(fh->overlay_mask, bitmap,
1604                                    (width * height + 7) / 8)) {
1605                         return -EFAULT;
1606                 }
1607         } else if (clipcount > 0) {
1608                 /* write our own bitmap from the clips */
1609                 vcp = vmalloc(sizeof(struct video_clip) * (clipcount + 4));
1610                 if (vcp == NULL) {
1611                         dprintk(1,
1612                                 KERN_ERR
1613                                 "%s: setup_window() - Alloc of clip mask failed\n",
1614                                 ZR_DEVNAME(zr));
1615                         return -ENOMEM;
1616                 }
1617                 if (copy_from_user
1618                     (vcp, clips, sizeof(struct video_clip) * clipcount)) {
1619                         vfree(vcp);
1620                         return -EFAULT;
1621                 }
1622                 write_overlay_mask(file, vcp, clipcount);
1623                 vfree(vcp);
1624         }
1625
1626         fh->overlay_settings.is_set = 1;
1627         if (fh->overlay_active != ZORAN_FREE &&
1628             zr->overlay_active != ZORAN_FREE)
1629                 zr->overlay_settings = fh->overlay_settings;
1630
1631         if (on)
1632                 zr36057_overlay(zr, 1);
1633
1634         /* Make sure the changes come into effect */
1635         return wait_grab_pending(zr);
1636 }
1637
1638 static int
1639 setup_overlay (struct file *file,
1640                int          on)
1641 {
1642         struct zoran_fh *fh = file->private_data;
1643         struct zoran *zr = fh->zr;
1644
1645         /* If there is nothing to do, return immediatly */
1646         if ((on && fh->overlay_active != ZORAN_FREE) ||
1647             (!on && fh->overlay_active == ZORAN_FREE))
1648                 return 0;
1649
1650         /* check whether we're touching someone else's overlay */
1651         if (on && zr->overlay_active != ZORAN_FREE &&
1652             fh->overlay_active == ZORAN_FREE) {
1653                 dprintk(1,
1654                         KERN_ERR
1655                         "%s: setup_overlay() - overlay is already active for another session\n",
1656                         ZR_DEVNAME(zr));
1657                 return -EBUSY;
1658         }
1659         if (!on && zr->overlay_active != ZORAN_FREE &&
1660             fh->overlay_active == ZORAN_FREE) {
1661                 dprintk(1,
1662                         KERN_ERR
1663                         "%s: setup_overlay() - you cannot cancel someone else's session\n",
1664                         ZR_DEVNAME(zr));
1665                 return -EPERM;
1666         }
1667
1668         if (on == 0) {
1669                 zr->overlay_active = fh->overlay_active = ZORAN_FREE;
1670                 zr->v4l_overlay_active = 0;
1671                 /* When a grab is running, the video simply
1672                  * won't be switched on any more */
1673                 if (!zr->v4l_memgrab_active)
1674                         zr36057_overlay(zr, 0);
1675                 zr->overlay_mask = NULL;
1676         } else {
1677                 if (!zr->buffer.base || !fh->overlay_settings.is_set) {
1678                         dprintk(1,
1679                                 KERN_ERR
1680                                 "%s: setup_overlay() - buffer or window not set\n",
1681                                 ZR_DEVNAME(zr));
1682                         return -EINVAL;
1683                 }
1684                 if (!fh->overlay_settings.format) {
1685                         dprintk(1,
1686                                 KERN_ERR
1687                                 "%s: setup_overlay() - no overlay format set\n",
1688                                 ZR_DEVNAME(zr));
1689                         return -EINVAL;
1690                 }
1691                 zr->overlay_active = fh->overlay_active = ZORAN_LOCKED;
1692                 zr->v4l_overlay_active = 1;
1693                 zr->overlay_mask = fh->overlay_mask;
1694                 zr->overlay_settings = fh->overlay_settings;
1695                 if (!zr->v4l_memgrab_active)
1696                         zr36057_overlay(zr, 1);
1697                 /* When a grab is running, the video will be
1698                  * switched on when grab is finished */
1699         }
1700
1701         /* Make sure the changes come into effect */
1702         return wait_grab_pending(zr);
1703 }
1704
1705         /* get the status of a buffer in the clients buffer queue */
1706 static int
1707 zoran_v4l2_buffer_status (struct file        *file,
1708                           struct v4l2_buffer *buf,
1709                           int                 num)
1710 {
1711         struct zoran_fh *fh = file->private_data;
1712         struct zoran *zr = fh->zr;
1713
1714         buf->flags = V4L2_BUF_FLAG_MAPPED;
1715
1716         switch (fh->map_mode) {
1717         case ZORAN_MAP_MODE_RAW:
1718
1719                 /* check range */
1720                 if (num < 0 || num >= fh->v4l_buffers.num_buffers ||
1721                     !fh->v4l_buffers.allocated) {
1722                         dprintk(1,
1723                                 KERN_ERR
1724                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1725                                 ZR_DEVNAME(zr));
1726                         return -EINVAL;
1727                 }
1728
1729                 buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1730                 buf->length = fh->v4l_buffers.buffer_size;
1731
1732                 /* get buffer */
1733                 buf->bytesused = fh->v4l_buffers.buffer[num].bs.length;
1734                 if (fh->v4l_buffers.buffer[num].state == BUZ_STATE_DONE ||
1735                     fh->v4l_buffers.buffer[num].state == BUZ_STATE_USER) {
1736                         buf->sequence = fh->v4l_buffers.buffer[num].bs.seq;
1737                         buf->flags |= V4L2_BUF_FLAG_DONE;
1738                         buf->timestamp =
1739                             fh->v4l_buffers.buffer[num].bs.timestamp;
1740                 } else {
1741                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1742                 }
1743
1744                 if (fh->v4l_settings.height <= BUZ_MAX_HEIGHT / 2)
1745                         buf->field = V4L2_FIELD_TOP;
1746                 else
1747                         buf->field = V4L2_FIELD_INTERLACED;
1748
1749                 break;
1750
1751         case ZORAN_MAP_MODE_JPG_REC:
1752         case ZORAN_MAP_MODE_JPG_PLAY:
1753
1754                 /* check range */
1755                 if (num < 0 || num >= fh->jpg_buffers.num_buffers ||
1756                     !fh->jpg_buffers.allocated) {
1757                         dprintk(1,
1758                                 KERN_ERR
1759                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1760                                 ZR_DEVNAME(zr));
1761                         return -EINVAL;
1762                 }
1763
1764                 buf->type = (fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
1765                               V4L2_BUF_TYPE_VIDEO_CAPTURE :
1766                               V4L2_BUF_TYPE_VIDEO_OUTPUT;
1767                 buf->length = fh->jpg_buffers.buffer_size;
1768
1769                 /* these variables are only written after frame has been captured */
1770                 if (fh->jpg_buffers.buffer[num].state == BUZ_STATE_DONE ||
1771                     fh->jpg_buffers.buffer[num].state == BUZ_STATE_USER) {
1772                         buf->sequence = fh->jpg_buffers.buffer[num].bs.seq;
1773                         buf->timestamp =
1774                             fh->jpg_buffers.buffer[num].bs.timestamp;
1775                         buf->bytesused =
1776                             fh->jpg_buffers.buffer[num].bs.length;
1777                         buf->flags |= V4L2_BUF_FLAG_DONE;
1778                 } else {
1779                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1780                 }
1781
1782                 /* which fields are these? */
1783                 if (fh->jpg_settings.TmpDcm != 1)
1784                         buf->field =
1785                             fh->jpg_settings.
1786                             odd_even ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
1787                 else
1788                         buf->field =
1789                             fh->jpg_settings.
1790                             odd_even ? V4L2_FIELD_SEQ_TB :
1791                             V4L2_FIELD_SEQ_BT;
1792
1793                 break;
1794
1795         default:
1796
1797                 dprintk(5,
1798                         KERN_ERR
1799                         "%s: v4l2_buffer_status() - invalid buffer type|map_mode (%d|%d)\n",
1800                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
1801                 return -EINVAL;
1802         }
1803
1804         buf->memory = V4L2_MEMORY_MMAP;
1805         buf->index = num;
1806         buf->m.offset = buf->length * num;
1807
1808         return 0;
1809 }
1810
1811 static int
1812 zoran_set_norm (struct zoran *zr,
1813                 int           norm) /* VIDEO_MODE_* */
1814 {
1815         int norm_encoder, on;
1816
1817         if (zr->v4l_buffers.active != ZORAN_FREE ||
1818             zr->jpg_buffers.active != ZORAN_FREE) {
1819                 dprintk(1,
1820                         KERN_WARNING
1821                         "%s: set_norm() called while in playback/capture mode\n",
1822                         ZR_DEVNAME(zr));
1823                 return -EBUSY;
1824         }
1825
1826         if (lock_norm && norm != zr->norm) {
1827                 if (lock_norm > 1) {
1828                         dprintk(1,
1829                                 KERN_WARNING
1830                                 "%s: set_norm() - TV standard is locked, can not switch norm\n",
1831                                 ZR_DEVNAME(zr));
1832                         return -EPERM;
1833                 } else {
1834                         dprintk(1,
1835                                 KERN_WARNING
1836                                 "%s: set_norm() - TV standard is locked, norm was not changed\n",
1837                                 ZR_DEVNAME(zr));
1838                         norm = zr->norm;
1839                 }
1840         }
1841
1842         if (norm != VIDEO_MODE_AUTO &&
1843             (norm < 0 || norm >= zr->card.norms ||
1844              !zr->card.tvn[norm])) {
1845                 dprintk(1,
1846                         KERN_ERR "%s: set_norm() - unsupported norm %d\n",
1847                         ZR_DEVNAME(zr), norm);
1848                 return -EINVAL;
1849         }
1850
1851         if (norm == VIDEO_MODE_AUTO) {
1852                 int status;
1853
1854                 /* if we have autodetect, ... */
1855                 struct video_decoder_capability caps;
1856                 decoder_command(zr, DECODER_GET_CAPABILITIES, &caps);
1857                 if (!(caps.flags & VIDEO_DECODER_AUTO)) {
1858                         dprintk(1, KERN_ERR "%s: norm=auto unsupported\n",
1859                                 ZR_DEVNAME(zr));
1860                         return -EINVAL;
1861                 }
1862
1863                 decoder_command(zr, DECODER_SET_NORM, &norm);
1864
1865                 /* let changes come into effect */
1866                 ssleep(2);
1867
1868                 decoder_command(zr, DECODER_GET_STATUS, &status);
1869                 if (!(status & DECODER_STATUS_GOOD)) {
1870                         dprintk(1,
1871                                 KERN_ERR
1872                                 "%s: set_norm() - no norm detected\n",
1873                                 ZR_DEVNAME(zr));
1874                         /* reset norm */
1875                         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1876                         return -EIO;
1877                 }
1878
1879                 if (status & DECODER_STATUS_NTSC)
1880                         norm = VIDEO_MODE_NTSC;
1881                 else if (status & DECODER_STATUS_SECAM)
1882                         norm = VIDEO_MODE_SECAM;
1883                 else
1884                         norm = VIDEO_MODE_PAL;
1885         }
1886         zr->timing = zr->card.tvn[norm];
1887         norm_encoder = norm;
1888
1889         /* We switch overlay off and on since a change in the
1890          * norm needs different VFE settings */
1891         on = zr->overlay_active && !zr->v4l_memgrab_active;
1892         if (on)
1893                 zr36057_overlay(zr, 0);
1894
1895         decoder_command(zr, DECODER_SET_NORM, &norm);
1896         encoder_command(zr, ENCODER_SET_NORM, &norm_encoder);
1897
1898         if (on)
1899                 zr36057_overlay(zr, 1);
1900
1901         /* Make sure the changes come into effect */
1902         zr->norm = norm;
1903
1904         return 0;
1905 }
1906
1907 static int
1908 zoran_set_input (struct zoran *zr,
1909                  int           input)
1910 {
1911         int realinput;
1912
1913         if (input == zr->input) {
1914                 return 0;
1915         }
1916
1917         if (zr->v4l_buffers.active != ZORAN_FREE ||
1918             zr->jpg_buffers.active != ZORAN_FREE) {
1919                 dprintk(1,
1920                         KERN_WARNING
1921                         "%s: set_input() called while in playback/capture mode\n",
1922                         ZR_DEVNAME(zr));
1923                 return -EBUSY;
1924         }
1925
1926         if (input < 0 || input >= zr->card.inputs) {
1927                 dprintk(1,
1928                         KERN_ERR
1929                         "%s: set_input() - unnsupported input %d\n",
1930                         ZR_DEVNAME(zr), input);
1931                 return -EINVAL;
1932         }
1933
1934         realinput = zr->card.input[input].muxsel;
1935         zr->input = input;
1936
1937         decoder_command(zr, DECODER_SET_INPUT, &realinput);
1938
1939         return 0;
1940 }
1941
1942 /*
1943  *   ioctl routine
1944  */
1945
1946 static int
1947 zoran_do_ioctl (struct inode *inode,
1948                 struct file  *file,
1949                 unsigned int  cmd,
1950                 void         *arg)
1951 {
1952         struct zoran_fh *fh = file->private_data;
1953         struct zoran *zr = fh->zr;
1954         /* CAREFUL: used in multiple places here */
1955         struct zoran_jpg_settings settings;
1956
1957         /* we might have older buffers lying around... We don't want
1958          * to wait, but we do want to try cleaning them up ASAP. So
1959          * we try to obtain the lock and free them. If that fails, we
1960          * don't do anything and wait for the next turn. In the end,
1961          * zoran_close() or a new allocation will still free them...
1962          * This is just a 'the sooner the better' extra 'feature'
1963          *
1964          * We don't free the buffers right on munmap() because that
1965          * causes oopses (kfree() inside munmap() oopses for no
1966          * apparent reason - it's also not reproduceable in any way,
1967          * but moving the free code outside the munmap() handler fixes
1968          * all this... If someone knows why, please explain me (Ronald)
1969          */
1970         if (mutex_trylock(&zr->resource_lock)) {
1971                 /* we obtained it! Let's try to free some things */
1972                 if (fh->jpg_buffers.ready_to_be_freed)
1973                         jpg_fbuffer_free(file);
1974                 if (fh->v4l_buffers.ready_to_be_freed)
1975                         v4l_fbuffer_free(file);
1976
1977                 mutex_unlock(&zr->resource_lock);
1978         }
1979
1980         switch (cmd) {
1981
1982         case VIDIOCGCAP:
1983         {
1984                 struct video_capability *vcap = arg;
1985
1986                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCAP\n", ZR_DEVNAME(zr));
1987
1988                 memset(vcap, 0, sizeof(struct video_capability));
1989                 strncpy(vcap->name, ZR_DEVNAME(zr), sizeof(vcap->name)-1);
1990                 vcap->type = ZORAN_VID_TYPE;
1991
1992                 vcap->channels = zr->card.inputs;
1993                 vcap->audios = 0;
1994                 mutex_lock(&zr->resource_lock);
1995                 vcap->maxwidth = BUZ_MAX_WIDTH;
1996                 vcap->maxheight = BUZ_MAX_HEIGHT;
1997                 vcap->minwidth = BUZ_MIN_WIDTH;
1998                 vcap->minheight = BUZ_MIN_HEIGHT;
1999                 mutex_unlock(&zr->resource_lock);
2000
2001                 return 0;
2002         }
2003                 break;
2004
2005         case VIDIOCGCHAN:
2006         {
2007                 struct video_channel *vchan = arg;
2008                 int channel = vchan->channel;
2009
2010                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCHAN - channel=%d\n",
2011                         ZR_DEVNAME(zr), vchan->channel);
2012
2013                 memset(vchan, 0, sizeof(struct video_channel));
2014                 if (channel > zr->card.inputs || channel < 0) {
2015                         dprintk(1,
2016                                 KERN_ERR
2017                                 "%s: VIDIOCGCHAN on not existing channel %d\n",
2018                                 ZR_DEVNAME(zr), channel);
2019                         return -EINVAL;
2020                 }
2021
2022                 strcpy(vchan->name, zr->card.input[channel].name);
2023
2024                 vchan->tuners = 0;
2025                 vchan->flags = 0;
2026                 vchan->type = VIDEO_TYPE_CAMERA;
2027                 mutex_lock(&zr->resource_lock);
2028                 vchan->norm = zr->norm;
2029                 mutex_unlock(&zr->resource_lock);
2030                 vchan->channel = channel;
2031
2032                 return 0;
2033         }
2034                 break;
2035
2036                 /* RJ: the documentation at http://roadrunner.swansea.linux.org.uk/v4lapi.shtml says:
2037                  *
2038                  * * "The VIDIOCSCHAN ioctl takes an integer argument and switches the capture to this input."
2039                  * *                                 ^^^^^^^
2040                  * * The famos BTTV driver has it implemented with a struct video_channel argument
2041                  * * and we follow it for compatibility reasons
2042                  * *
2043                  * * BTW: this is the only way the user can set the norm!
2044                  */
2045
2046         case VIDIOCSCHAN:
2047         {
2048                 struct video_channel *vchan = arg;
2049                 int res;
2050
2051                 dprintk(3,
2052                         KERN_DEBUG
2053                         "%s: VIDIOCSCHAN - channel=%d, norm=%d\n",
2054                         ZR_DEVNAME(zr), vchan->channel, vchan->norm);
2055
2056                 mutex_lock(&zr->resource_lock);
2057                 if ((res = zoran_set_input(zr, vchan->channel)))
2058                         goto schan_unlock_and_return;
2059                 if ((res = zoran_set_norm(zr, vchan->norm)))
2060                         goto schan_unlock_and_return;
2061
2062                 /* Make sure the changes come into effect */
2063                 res = wait_grab_pending(zr);
2064         schan_unlock_and_return:
2065                 mutex_unlock(&zr->resource_lock);
2066                 return res;
2067         }
2068                 break;
2069
2070         case VIDIOCGPICT:
2071         {
2072                 struct video_picture *vpict = arg;
2073
2074                 dprintk(3, KERN_DEBUG "%s: VIDIOCGPICT\n", ZR_DEVNAME(zr));
2075
2076                 memset(vpict, 0, sizeof(struct video_picture));
2077                 mutex_lock(&zr->resource_lock);
2078                 vpict->hue = zr->hue;
2079                 vpict->brightness = zr->brightness;
2080                 vpict->contrast = zr->contrast;
2081                 vpict->colour = zr->saturation;
2082                 if (fh->overlay_settings.format) {
2083                         vpict->depth = fh->overlay_settings.format->depth;
2084                         vpict->palette = fh->overlay_settings.format->palette;
2085                 } else {
2086                         vpict->depth = 0;
2087                 }
2088                 mutex_unlock(&zr->resource_lock);
2089
2090                 return 0;
2091         }
2092                 break;
2093
2094         case VIDIOCSPICT:
2095         {
2096                 struct video_picture *vpict = arg;
2097                 int i;
2098
2099                 dprintk(3,
2100                         KERN_DEBUG
2101                         "%s: VIDIOCSPICT - bri=%d, hue=%d, col=%d, con=%d, dep=%d, pal=%d\n",
2102                         ZR_DEVNAME(zr), vpict->brightness, vpict->hue,
2103                         vpict->colour, vpict->contrast, vpict->depth,
2104                         vpict->palette);
2105
2106                 for (i = 0; i < NUM_FORMATS; i++) {
2107                         const struct zoran_format *fmt = &zoran_formats[i];
2108
2109                         if (fmt->palette != -1 &&
2110                             fmt->flags & ZORAN_FORMAT_OVERLAY &&
2111                             fmt->palette == vpict->palette &&
2112                             fmt->depth == vpict->depth)
2113                                 break;
2114                 }
2115                 if (i == NUM_FORMATS) {
2116                         dprintk(1,
2117                                 KERN_ERR
2118                                 "%s: VIDIOCSPICT - Invalid palette %d\n",
2119                                 ZR_DEVNAME(zr), vpict->palette);
2120                         return -EINVAL;
2121                 }
2122
2123                 mutex_lock(&zr->resource_lock);
2124
2125                 decoder_command(zr, DECODER_SET_PICTURE, vpict);
2126
2127                 zr->hue = vpict->hue;
2128                 zr->contrast = vpict->contrast;
2129                 zr->saturation = vpict->colour;
2130                 zr->brightness = vpict->brightness;
2131
2132                 fh->overlay_settings.format = &zoran_formats[i];
2133
2134                 mutex_unlock(&zr->resource_lock);
2135
2136                 return 0;
2137         }
2138                 break;
2139
2140         case VIDIOCCAPTURE:
2141         {
2142                 int *on = arg, res;
2143
2144                 dprintk(3, KERN_DEBUG "%s: VIDIOCCAPTURE - on=%d\n",
2145                         ZR_DEVNAME(zr), *on);
2146
2147                 mutex_lock(&zr->resource_lock);
2148                 res = setup_overlay(file, *on);
2149                 mutex_unlock(&zr->resource_lock);
2150
2151                 return res;
2152         }
2153                 break;
2154
2155         case VIDIOCGWIN:
2156         {
2157                 struct video_window *vwin = arg;
2158
2159                 dprintk(3, KERN_DEBUG "%s: VIDIOCGWIN\n", ZR_DEVNAME(zr));
2160
2161                 memset(vwin, 0, sizeof(struct video_window));
2162                 mutex_lock(&zr->resource_lock);
2163                 vwin->x = fh->overlay_settings.x;
2164                 vwin->y = fh->overlay_settings.y;
2165                 vwin->width = fh->overlay_settings.width;
2166                 vwin->height = fh->overlay_settings.height;
2167                 mutex_unlock(&zr->resource_lock);
2168                 vwin->clipcount = 0;
2169                 return 0;
2170         }
2171                 break;
2172
2173         case VIDIOCSWIN:
2174         {
2175                 struct video_window *vwin = arg;
2176                 int res;
2177
2178                 dprintk(3,
2179                         KERN_DEBUG
2180                         "%s: VIDIOCSWIN - x=%d, y=%d, w=%d, h=%d, clipcount=%d\n",
2181                         ZR_DEVNAME(zr), vwin->x, vwin->y, vwin->width,
2182                         vwin->height, vwin->clipcount);
2183
2184                 mutex_lock(&zr->resource_lock);
2185                 res =
2186                     setup_window(file, vwin->x, vwin->y, vwin->width,
2187                                  vwin->height, vwin->clips,
2188                                  vwin->clipcount, NULL);
2189                 mutex_unlock(&zr->resource_lock);
2190
2191                 return res;
2192         }
2193                 break;
2194
2195         case VIDIOCGFBUF:
2196         {
2197                 struct video_buffer *vbuf = arg;
2198
2199                 dprintk(3, KERN_DEBUG "%s: VIDIOCGFBUF\n", ZR_DEVNAME(zr));
2200
2201                 mutex_lock(&zr->resource_lock);
2202                 *vbuf = zr->buffer;
2203                 mutex_unlock(&zr->resource_lock);
2204                 return 0;
2205         }
2206                 break;
2207
2208         case VIDIOCSFBUF:
2209         {
2210                 struct video_buffer *vbuf = arg;
2211                 int i, res = 0;
2212
2213                 dprintk(3,
2214                         KERN_DEBUG
2215                         "%s: VIDIOCSFBUF - base=%p, w=%d, h=%d, depth=%d, bpl=%d\n",
2216                         ZR_DEVNAME(zr), vbuf->base, vbuf->width,
2217                         vbuf->height, vbuf->depth, vbuf->bytesperline);
2218
2219                 for (i = 0; i < NUM_FORMATS; i++)
2220                         if (zoran_formats[i].depth == vbuf->depth)
2221                                 break;
2222                 if (i == NUM_FORMATS) {
2223                         dprintk(1,
2224                                 KERN_ERR
2225                                 "%s: VIDIOCSFBUF - invalid fbuf depth %d\n",
2226                                 ZR_DEVNAME(zr), vbuf->depth);
2227                         return -EINVAL;
2228                 }
2229
2230                 mutex_lock(&zr->resource_lock);
2231                 res =
2232                     setup_fbuffer(file, vbuf->base, &zoran_formats[i],
2233                                   vbuf->width, vbuf->height,
2234                                   vbuf->bytesperline);
2235                 mutex_unlock(&zr->resource_lock);
2236
2237                 return res;
2238         }
2239                 break;
2240
2241         case VIDIOCSYNC:
2242         {
2243                 int *frame = arg, res;
2244
2245                 dprintk(3, KERN_DEBUG "%s: VIDIOCSYNC - frame=%d\n",
2246                         ZR_DEVNAME(zr), *frame);
2247
2248                 mutex_lock(&zr->resource_lock);
2249                 res = v4l_sync(file, *frame);
2250                 mutex_unlock(&zr->resource_lock);
2251                 if (!res)
2252                         zr->v4l_sync_tail++;
2253                 return res;
2254         }
2255                 break;
2256
2257         case VIDIOCMCAPTURE:
2258         {
2259                 struct video_mmap *vmap = arg;
2260                 int res;
2261
2262                 dprintk(3,
2263                         KERN_DEBUG
2264                         "%s: VIDIOCMCAPTURE - frame=%d, geom=%dx%d, fmt=%d\n",
2265                         ZR_DEVNAME(zr), vmap->frame, vmap->width, vmap->height,
2266                         vmap->format);
2267
2268                 mutex_lock(&zr->resource_lock);
2269                 res = v4l_grab(file, vmap);
2270                 mutex_unlock(&zr->resource_lock);
2271                 return res;
2272         }
2273                 break;
2274
2275         case VIDIOCGMBUF:
2276         {
2277                 struct video_mbuf *vmbuf = arg;
2278                 int i, res = 0;
2279
2280                 dprintk(3, KERN_DEBUG "%s: VIDIOCGMBUF\n", ZR_DEVNAME(zr));
2281
2282                 vmbuf->size =
2283                     fh->v4l_buffers.num_buffers *
2284                     fh->v4l_buffers.buffer_size;
2285                 vmbuf->frames = fh->v4l_buffers.num_buffers;
2286                 for (i = 0; i < vmbuf->frames; i++) {
2287                         vmbuf->offsets[i] =
2288                             i * fh->v4l_buffers.buffer_size;
2289                 }
2290
2291                 mutex_lock(&zr->resource_lock);
2292
2293                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2294                         dprintk(1,
2295                                 KERN_ERR
2296                                 "%s: VIDIOCGMBUF - buffers already allocated\n",
2297                                 ZR_DEVNAME(zr));
2298                         res = -EINVAL;
2299                         goto v4l1reqbuf_unlock_and_return;
2300                 }
2301
2302                 if (v4l_fbuffer_alloc(file)) {
2303                         res = -ENOMEM;
2304                         goto v4l1reqbuf_unlock_and_return;
2305                 }
2306
2307                 /* The next mmap will map the V4L buffers */
2308                 fh->map_mode = ZORAN_MAP_MODE_RAW;
2309         v4l1reqbuf_unlock_and_return:
2310                 mutex_unlock(&zr->resource_lock);
2311
2312                 return res;
2313         }
2314                 break;
2315
2316         case VIDIOCGUNIT:
2317         {
2318                 struct video_unit *vunit = arg;
2319
2320                 dprintk(3, KERN_DEBUG "%s: VIDIOCGUNIT\n", ZR_DEVNAME(zr));
2321
2322                 vunit->video = zr->video_dev->minor;
2323                 vunit->vbi = VIDEO_NO_UNIT;
2324                 vunit->radio = VIDEO_NO_UNIT;
2325                 vunit->audio = VIDEO_NO_UNIT;
2326                 vunit->teletext = VIDEO_NO_UNIT;
2327
2328                 return 0;
2329         }
2330                 break;
2331
2332                 /*
2333                  * RJ: In principal we could support subcaptures for V4L grabbing.
2334                  *     Not even the famous BTTV driver has them, however.
2335                  *     If there should be a strong demand, one could consider
2336                  *     to implement them.
2337                  */
2338         case VIDIOCGCAPTURE:
2339         {
2340                 dprintk(3, KERN_ERR "%s: VIDIOCGCAPTURE not supported\n",
2341                         ZR_DEVNAME(zr));
2342                 return -EINVAL;
2343         }
2344                 break;
2345
2346         case VIDIOCSCAPTURE:
2347         {
2348                 dprintk(3, KERN_ERR "%s: VIDIOCSCAPTURE not supported\n",
2349                         ZR_DEVNAME(zr));
2350                 return -EINVAL;
2351         }
2352                 break;
2353
2354         case BUZIOC_G_PARAMS:
2355         {
2356                 struct zoran_params *bparams = arg;
2357
2358                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_PARAMS\n", ZR_DEVNAME(zr));
2359
2360                 memset(bparams, 0, sizeof(struct zoran_params));
2361                 bparams->major_version = MAJOR_VERSION;
2362                 bparams->minor_version = MINOR_VERSION;
2363
2364                 mutex_lock(&zr->resource_lock);
2365
2366                 bparams->norm = zr->norm;
2367                 bparams->input = zr->input;
2368
2369                 bparams->decimation = fh->jpg_settings.decimation;
2370                 bparams->HorDcm = fh->jpg_settings.HorDcm;
2371                 bparams->VerDcm = fh->jpg_settings.VerDcm;
2372                 bparams->TmpDcm = fh->jpg_settings.TmpDcm;
2373                 bparams->field_per_buff = fh->jpg_settings.field_per_buff;
2374                 bparams->img_x = fh->jpg_settings.img_x;
2375                 bparams->img_y = fh->jpg_settings.img_y;
2376                 bparams->img_width = fh->jpg_settings.img_width;
2377                 bparams->img_height = fh->jpg_settings.img_height;
2378                 bparams->odd_even = fh->jpg_settings.odd_even;
2379
2380                 bparams->quality = fh->jpg_settings.jpg_comp.quality;
2381                 bparams->APPn = fh->jpg_settings.jpg_comp.APPn;
2382                 bparams->APP_len = fh->jpg_settings.jpg_comp.APP_len;
2383                 memcpy(bparams->APP_data,
2384                        fh->jpg_settings.jpg_comp.APP_data,
2385                        sizeof(bparams->APP_data));
2386                 bparams->COM_len = zr->jpg_settings.jpg_comp.COM_len;
2387                 memcpy(bparams->COM_data,
2388                        fh->jpg_settings.jpg_comp.COM_data,
2389                        sizeof(bparams->COM_data));
2390                 bparams->jpeg_markers =
2391                     fh->jpg_settings.jpg_comp.jpeg_markers;
2392
2393                 mutex_unlock(&zr->resource_lock);
2394
2395                 bparams->VFIFO_FB = 0;
2396
2397                 return 0;
2398         }
2399                 break;
2400
2401         case BUZIOC_S_PARAMS:
2402         {
2403                 struct zoran_params *bparams = arg;
2404                 int res = 0;
2405
2406                 dprintk(3, KERN_DEBUG "%s: BUZIOC_S_PARAMS\n", ZR_DEVNAME(zr));
2407
2408                 settings.decimation = bparams->decimation;
2409                 settings.HorDcm = bparams->HorDcm;
2410                 settings.VerDcm = bparams->VerDcm;
2411                 settings.TmpDcm = bparams->TmpDcm;
2412                 settings.field_per_buff = bparams->field_per_buff;
2413                 settings.img_x = bparams->img_x;
2414                 settings.img_y = bparams->img_y;
2415                 settings.img_width = bparams->img_width;
2416                 settings.img_height = bparams->img_height;
2417                 settings.odd_even = bparams->odd_even;
2418
2419                 settings.jpg_comp.quality = bparams->quality;
2420                 settings.jpg_comp.APPn = bparams->APPn;
2421                 settings.jpg_comp.APP_len = bparams->APP_len;
2422                 memcpy(settings.jpg_comp.APP_data, bparams->APP_data,
2423                        sizeof(bparams->APP_data));
2424                 settings.jpg_comp.COM_len = bparams->COM_len;
2425                 memcpy(settings.jpg_comp.COM_data, bparams->COM_data,
2426                        sizeof(bparams->COM_data));
2427                 settings.jpg_comp.jpeg_markers = bparams->jpeg_markers;
2428
2429                 mutex_lock(&zr->resource_lock);
2430
2431                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2432                         dprintk(1,
2433                                 KERN_ERR
2434                                 "%s: BUZIOC_S_PARAMS called, but Buz in capture/playback mode\n",
2435                                 ZR_DEVNAME(zr));
2436                         res = -EINVAL;
2437                         goto sparams_unlock_and_return;
2438                 }
2439
2440                 /* Check the params first before overwriting our
2441                  * nternal values */
2442                 if (zoran_check_jpg_settings(zr, &settings)) {
2443                         res = -EINVAL;
2444                         goto sparams_unlock_and_return;
2445                 }
2446
2447                 fh->jpg_settings = settings;
2448         sparams_unlock_and_return:
2449                 mutex_unlock(&zr->resource_lock);
2450
2451                 return res;
2452         }
2453                 break;
2454
2455         case BUZIOC_REQBUFS:
2456         {
2457                 struct zoran_requestbuffers *breq = arg;
2458                 int res = 0;
2459
2460                 dprintk(3,
2461                         KERN_DEBUG
2462                         "%s: BUZIOC_REQBUFS - count=%lu, size=%lu\n",
2463                         ZR_DEVNAME(zr), breq->count, breq->size);
2464
2465                 /* Enforce reasonable lower and upper limits */
2466                 if (breq->count < 4)
2467                         breq->count = 4;        /* Could be choosen smaller */
2468                 if (breq->count > jpg_nbufs)
2469                         breq->count = jpg_nbufs;
2470                 breq->size = PAGE_ALIGN(breq->size);
2471                 if (breq->size < 8192)
2472                         breq->size = 8192;      /* Arbitrary */
2473                 /* breq->size is limited by 1 page for the stat_com
2474                  * tables to a Maximum of 2 MB */
2475                 if (breq->size > jpg_bufsize)
2476                         breq->size = jpg_bufsize;
2477                 if (fh->jpg_buffers.need_contiguous &&
2478                     breq->size > MAX_KMALLOC_MEM)
2479                         breq->size = MAX_KMALLOC_MEM;
2480
2481                 mutex_lock(&zr->resource_lock);
2482
2483                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2484                         dprintk(1,
2485                                 KERN_ERR
2486                                 "%s: BUZIOC_REQBUFS - buffers allready allocated\n",
2487                                 ZR_DEVNAME(zr));
2488                         res = -EBUSY;
2489                         goto jpgreqbuf_unlock_and_return;
2490                 }
2491
2492                 fh->jpg_buffers.num_buffers = breq->count;
2493                 fh->jpg_buffers.buffer_size = breq->size;
2494
2495                 if (jpg_fbuffer_alloc(file)) {
2496                         res = -ENOMEM;
2497                         goto jpgreqbuf_unlock_and_return;
2498                 }
2499
2500                 /* The next mmap will map the MJPEG buffers - could
2501                  * also be *_PLAY, but it doesn't matter here */
2502                 fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
2503         jpgreqbuf_unlock_and_return:
2504                 mutex_unlock(&zr->resource_lock);
2505
2506                 return res;
2507         }
2508                 break;
2509
2510         case BUZIOC_QBUF_CAPT:
2511         {
2512                 int *frame = arg, res;
2513
2514                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_CAPT - frame=%d\n",
2515                         ZR_DEVNAME(zr), *frame);
2516
2517                 mutex_lock(&zr->resource_lock);
2518                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_COMPRESS);
2519                 mutex_unlock(&zr->resource_lock);
2520
2521                 return res;
2522         }
2523                 break;
2524
2525         case BUZIOC_QBUF_PLAY:
2526         {
2527                 int *frame = arg, res;
2528
2529                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_PLAY - frame=%d\n",
2530                         ZR_DEVNAME(zr), *frame);
2531
2532                 mutex_lock(&zr->resource_lock);
2533                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_DECOMPRESS);
2534                 mutex_unlock(&zr->resource_lock);
2535
2536                 return res;
2537         }
2538                 break;
2539
2540         case BUZIOC_SYNC:
2541         {
2542                 struct zoran_sync *bsync = arg;
2543                 int res;
2544
2545                 dprintk(3, KERN_DEBUG "%s: BUZIOC_SYNC\n", ZR_DEVNAME(zr));
2546
2547                 mutex_lock(&zr->resource_lock);
2548                 res = jpg_sync(file, bsync);
2549                 mutex_unlock(&zr->resource_lock);
2550
2551                 return res;
2552         }
2553                 break;
2554
2555         case BUZIOC_G_STATUS:
2556         {
2557                 struct zoran_status *bstat = arg;
2558                 int norm, input, status, res = 0;
2559
2560                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_STATUS\n", ZR_DEVNAME(zr));
2561
2562                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2563                         dprintk(1,
2564                                 KERN_ERR
2565                                 "%s: BUZIOC_G_STATUS called but Buz in capture/playback mode\n",
2566                                 ZR_DEVNAME(zr));
2567                         return -EINVAL;
2568                 }
2569
2570                 input = zr->card.input[bstat->input].muxsel;
2571                 norm = VIDEO_MODE_AUTO;
2572
2573                 mutex_lock(&zr->resource_lock);
2574
2575                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2576                         dprintk(1,
2577                                 KERN_ERR
2578                                 "%s: BUZIOC_G_STATUS called, but Buz in capture/playback mode\n",
2579                                 ZR_DEVNAME(zr));
2580                         res = -EINVAL;
2581                         goto gstat_unlock_and_return;
2582                 }
2583
2584                 decoder_command(zr, DECODER_SET_INPUT, &input);
2585                 decoder_command(zr, DECODER_SET_NORM, &norm);
2586
2587                 /* sleep 1 second */
2588                 ssleep(1);
2589
2590                 /* Get status of video decoder */
2591                 decoder_command(zr, DECODER_GET_STATUS, &status);
2592
2593                 /* restore previous input and norm */
2594                 input = zr->card.input[zr->input].muxsel;
2595                 decoder_command(zr, DECODER_SET_INPUT, &input);
2596                 decoder_command(zr, DECODER_SET_NORM, &zr->norm);
2597         gstat_unlock_and_return:
2598                 mutex_unlock(&zr->resource_lock);
2599
2600                 if (!res) {
2601                         bstat->signal =
2602                             (status & DECODER_STATUS_GOOD) ? 1 : 0;
2603                         if (status & DECODER_STATUS_NTSC)
2604                                 bstat->norm = VIDEO_MODE_NTSC;
2605                         else if (status & DECODER_STATUS_SECAM)
2606                                 bstat->norm = VIDEO_MODE_SECAM;
2607                         else
2608                                 bstat->norm = VIDEO_MODE_PAL;
2609
2610                         bstat->color =
2611                             (status & DECODER_STATUS_COLOR) ? 1 : 0;
2612                 }
2613
2614                 return res;
2615         }
2616                 break;
2617
2618                 /* The new video4linux2 capture interface - much nicer than video4linux1, since
2619                  * it allows for integrating the JPEG capturing calls inside standard v4l2
2620                  */
2621
2622         case VIDIOC_QUERYCAP:
2623         {
2624                 struct v4l2_capability *cap = arg;
2625
2626                 dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCAP\n", ZR_DEVNAME(zr));
2627
2628                 memset(cap, 0, sizeof(*cap));
2629                 strncpy(cap->card, ZR_DEVNAME(zr), sizeof(cap->card)-1);
2630                 strncpy(cap->driver, "zoran", sizeof(cap->driver)-1);
2631                 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
2632                          pci_name(zr->pci_dev));
2633                 cap->version =
2634                     KERNEL_VERSION(MAJOR_VERSION, MINOR_VERSION,
2635                                    RELEASE_VERSION);
2636                 cap->capabilities = ZORAN_V4L2_VID_FLAGS;
2637
2638                 return 0;
2639         }
2640                 break;
2641
2642         case VIDIOC_ENUM_FMT:
2643         {
2644                 struct v4l2_fmtdesc *fmt = arg;
2645                 int index = fmt->index, num = -1, i, flag = 0, type =
2646                     fmt->type;
2647
2648                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUM_FMT - index=%d\n",
2649                         ZR_DEVNAME(zr), fmt->index);
2650
2651                 switch (fmt->type) {
2652                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2653                         flag = ZORAN_FORMAT_CAPTURE;
2654                         break;
2655                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2656                         flag = ZORAN_FORMAT_PLAYBACK;
2657                         break;
2658                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2659                         flag = ZORAN_FORMAT_OVERLAY;
2660                         break;
2661                 default:
2662                         dprintk(1,
2663                                 KERN_ERR
2664                                 "%s: VIDIOC_ENUM_FMT - unknown type %d\n",
2665                                 ZR_DEVNAME(zr), fmt->type);
2666                         return -EINVAL;
2667                 }
2668
2669                 for (i = 0; i < NUM_FORMATS; i++) {
2670                         if (zoran_formats[i].flags & flag)
2671                                 num++;
2672                         if (num == fmt->index)
2673                                 break;
2674                 }
2675                 if (fmt->index < 0 /* late, but not too late */  ||
2676                     i == NUM_FORMATS)
2677                         return -EINVAL;
2678
2679                 memset(fmt, 0, sizeof(*fmt));
2680                 fmt->index = index;
2681                 fmt->type = type;
2682                 strncpy(fmt->description, zoran_formats[i].name, sizeof(fmt->description)-1);
2683                 fmt->pixelformat = zoran_formats[i].fourcc;
2684                 if (zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED)
2685                         fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
2686
2687                 return 0;
2688         }
2689                 break;
2690
2691         case VIDIOC_G_FMT:
2692         {
2693                 struct v4l2_format *fmt = arg;
2694                 int type = fmt->type;
2695
2696                 dprintk(5, KERN_DEBUG "%s: VIDIOC_G_FMT\n", ZR_DEVNAME(zr));
2697
2698                 memset(fmt, 0, sizeof(*fmt));
2699                 fmt->type = type;
2700
2701                 switch (fmt->type) {
2702                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2703
2704                         mutex_lock(&zr->resource_lock);
2705
2706                         fmt->fmt.win.w.left = fh->overlay_settings.x;
2707                         fmt->fmt.win.w.top = fh->overlay_settings.y;
2708                         fmt->fmt.win.w.width = fh->overlay_settings.width;
2709                         fmt->fmt.win.w.height =
2710                             fh->overlay_settings.height;
2711                         if (fh->overlay_settings.width * 2 >
2712                             BUZ_MAX_HEIGHT)
2713                                 fmt->fmt.win.field = V4L2_FIELD_INTERLACED;
2714                         else
2715                                 fmt->fmt.win.field = V4L2_FIELD_TOP;
2716
2717                         mutex_unlock(&zr->resource_lock);
2718
2719                         break;
2720
2721                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2722                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2723
2724                         mutex_lock(&zr->resource_lock);
2725
2726                         if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2727                             fh->map_mode == ZORAN_MAP_MODE_RAW) {
2728
2729                                 fmt->fmt.pix.width =
2730                                     fh->v4l_settings.width;
2731                                 fmt->fmt.pix.height =
2732                                     fh->v4l_settings.height;
2733                                 fmt->fmt.pix.sizeimage =
2734                                     fh->v4l_settings.bytesperline *
2735                                     fh->v4l_settings.height;
2736                                 fmt->fmt.pix.pixelformat =
2737                                     fh->v4l_settings.format->fourcc;
2738                                 fmt->fmt.pix.colorspace =
2739                                     fh->v4l_settings.format->colorspace;
2740                                 fmt->fmt.pix.bytesperline =
2741                                     fh->v4l_settings.bytesperline;
2742                                 if (BUZ_MAX_HEIGHT <
2743                                     (fh->v4l_settings.height * 2))
2744                                         fmt->fmt.pix.field =
2745                                             V4L2_FIELD_INTERLACED;
2746                                 else
2747                                         fmt->fmt.pix.field =
2748                                             V4L2_FIELD_TOP;
2749
2750                         } else {
2751
2752                                 fmt->fmt.pix.width =
2753                                     fh->jpg_settings.img_width /
2754                                     fh->jpg_settings.HorDcm;
2755                                 fmt->fmt.pix.height =
2756                                     fh->jpg_settings.img_height /
2757                                     (fh->jpg_settings.VerDcm *
2758                                      fh->jpg_settings.TmpDcm);
2759                                 fmt->fmt.pix.sizeimage =
2760                                     zoran_v4l2_calc_bufsize(&fh->
2761                                                             jpg_settings);
2762                                 fmt->fmt.pix.pixelformat =
2763                                     V4L2_PIX_FMT_MJPEG;
2764                                 if (fh->jpg_settings.TmpDcm == 1)
2765                                         fmt->fmt.pix.field =
2766                                             (fh->jpg_settings.
2767                                              odd_even ? V4L2_FIELD_SEQ_BT :
2768                                              V4L2_FIELD_SEQ_BT);
2769                                 else
2770                                         fmt->fmt.pix.field =
2771                                             (fh->jpg_settings.
2772                                              odd_even ? V4L2_FIELD_TOP :
2773                                              V4L2_FIELD_BOTTOM);
2774
2775                                 fmt->fmt.pix.bytesperline = 0;
2776                                 fmt->fmt.pix.colorspace =
2777                                     V4L2_COLORSPACE_SMPTE170M;
2778                         }
2779
2780                         mutex_unlock(&zr->resource_lock);
2781
2782                         break;
2783
2784                 default:
2785                         dprintk(1,
2786                                 KERN_ERR
2787                                 "%s: VIDIOC_G_FMT - unsupported type %d\n",
2788                                 ZR_DEVNAME(zr), fmt->type);
2789                         return -EINVAL;
2790                 }
2791                 return 0;
2792         }
2793                 break;
2794
2795         case VIDIOC_S_FMT:
2796         {
2797                 struct v4l2_format *fmt = arg;
2798                 int i, res = 0;
2799                 __le32 printformat;
2800
2801                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_FMT - type=%d, ",
2802                         ZR_DEVNAME(zr), fmt->type);
2803
2804                 switch (fmt->type) {
2805                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2806
2807                         dprintk(3, "x=%d, y=%d, w=%d, h=%d, cnt=%d, map=0x%p\n",
2808                                 fmt->fmt.win.w.left, fmt->fmt.win.w.top,
2809                                 fmt->fmt.win.w.width,
2810                                 fmt->fmt.win.w.height,
2811                                 fmt->fmt.win.clipcount,
2812                                 fmt->fmt.win.bitmap);
2813                         mutex_lock(&zr->resource_lock);
2814                         res =
2815                             setup_window(file, fmt->fmt.win.w.left,
2816                                          fmt->fmt.win.w.top,
2817                                          fmt->fmt.win.w.width,
2818                                          fmt->fmt.win.w.height,
2819                                          (struct video_clip __user *)
2820                                            fmt->fmt.win.clips,
2821                                          fmt->fmt.win.clipcount,
2822                                          fmt->fmt.win.bitmap);
2823                         mutex_unlock(&zr->resource_lock);
2824                         return res;
2825                         break;
2826
2827                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2828                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2829
2830                         printformat =
2831                             __cpu_to_le32(fmt->fmt.pix.pixelformat);
2832                         dprintk(3, "size=%dx%d, fmt=0x%x (%4.4s)\n",
2833                                 fmt->fmt.pix.width, fmt->fmt.pix.height,
2834                                 fmt->fmt.pix.pixelformat,
2835                                 (char *) &printformat);
2836
2837                         /* we can be requested to do JPEG/raw playback/capture */
2838                         if (!
2839                             (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2840                              (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
2841                               fmt->fmt.pix.pixelformat ==
2842                               V4L2_PIX_FMT_MJPEG))) {
2843                                 dprintk(1,
2844                                         KERN_ERR
2845                                         "%s: VIDIOC_S_FMT - unknown type %d/0x%x(%4.4s) combination\n",
2846                                         ZR_DEVNAME(zr), fmt->type,
2847                                         fmt->fmt.pix.pixelformat,
2848                                         (char *) &printformat);
2849                                 return -EINVAL;
2850                         }
2851
2852                         if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
2853                                 mutex_lock(&zr->resource_lock);
2854
2855                                 settings = fh->jpg_settings;
2856
2857                                 if (fh->v4l_buffers.allocated ||
2858                                     fh->jpg_buffers.allocated) {
2859                                         dprintk(1,
2860                                                 KERN_ERR
2861                                                 "%s: VIDIOC_S_FMT - cannot change capture mode\n",
2862                                                 ZR_DEVNAME(zr));
2863                                         res = -EBUSY;
2864                                         goto sfmtjpg_unlock_and_return;
2865                                 }
2866
2867                                 /* we actually need to set 'real' parameters now */
2868                                 if ((fmt->fmt.pix.height * 2) >
2869                                     BUZ_MAX_HEIGHT)
2870                                         settings.TmpDcm = 1;
2871                                 else
2872                                         settings.TmpDcm = 2;
2873                                 settings.decimation = 0;
2874                                 if (fmt->fmt.pix.height <=
2875                                     fh->jpg_settings.img_height / 2)
2876                                         settings.VerDcm = 2;
2877                                 else
2878                                         settings.VerDcm = 1;
2879                                 if (fmt->fmt.pix.width <=
2880                                     fh->jpg_settings.img_width / 4)
2881                                         settings.HorDcm = 4;
2882                                 else if (fmt->fmt.pix.width <=
2883                                          fh->jpg_settings.img_width / 2)
2884                                         settings.HorDcm = 2;
2885                                 else
2886                                         settings.HorDcm = 1;
2887                                 if (settings.TmpDcm == 1)
2888                                         settings.field_per_buff = 2;
2889                                 else
2890                                         settings.field_per_buff = 1;
2891
2892                                 /* check */
2893                                 if ((res =
2894                                      zoran_check_jpg_settings(zr,
2895                                                               &settings)))
2896                                         goto sfmtjpg_unlock_and_return;
2897
2898                                 /* it's ok, so set them */
2899                                 fh->jpg_settings = settings;
2900
2901                                 /* tell the user what we actually did */
2902                                 fmt->fmt.pix.width =
2903                                     settings.img_width / settings.HorDcm;
2904                                 fmt->fmt.pix.height =
2905                                     settings.img_height * 2 /
2906                                     (settings.TmpDcm * settings.VerDcm);
2907                                 if (settings.TmpDcm == 1)
2908                                         fmt->fmt.pix.field =
2909                                             (fh->jpg_settings.
2910                                              odd_even ? V4L2_FIELD_SEQ_TB :
2911                                              V4L2_FIELD_SEQ_BT);
2912                                 else
2913                                         fmt->fmt.pix.field =
2914                                             (fh->jpg_settings.
2915                                              odd_even ? V4L2_FIELD_TOP :
2916                                              V4L2_FIELD_BOTTOM);
2917                                 fh->jpg_buffers.buffer_size =
2918                                     zoran_v4l2_calc_bufsize(&fh->
2919                                                             jpg_settings);
2920                                 fmt->fmt.pix.bytesperline = 0;
2921                                 fmt->fmt.pix.sizeimage =
2922                                     fh->jpg_buffers.buffer_size;
2923
2924                                 /* we hereby abuse this variable to show that
2925                                  * we're gonna do mjpeg capture */
2926                                 fh->map_mode =
2927                                     (fmt->type ==
2928                                      V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
2929                                     ZORAN_MAP_MODE_JPG_REC :
2930                                     ZORAN_MAP_MODE_JPG_PLAY;
2931                         sfmtjpg_unlock_and_return:
2932                                 mutex_unlock(&zr->resource_lock);
2933                         } else {
2934                                 for (i = 0; i < NUM_FORMATS; i++)
2935                                         if (fmt->fmt.pix.pixelformat ==
2936                                             zoran_formats[i].fourcc)
2937                                                 break;
2938                                 if (i == NUM_FORMATS) {
2939                                         dprintk(1,
2940                                                 KERN_ERR
2941                                                 "%s: VIDIOC_S_FMT - unknown/unsupported format 0x%x (%4.4s)\n",
2942                                                 ZR_DEVNAME(zr),
2943                                                 fmt->fmt.pix.pixelformat,
2944                                                 (char *) &printformat);
2945                                         return -EINVAL;
2946                                 }
2947                                 mutex_lock(&zr->resource_lock);
2948                                 if (fh->jpg_buffers.allocated ||
2949                                     (fh->v4l_buffers.allocated &&
2950                                      fh->v4l_buffers.active !=
2951                                      ZORAN_FREE)) {
2952                                         dprintk(1,