V4L/DVB (4632): Zoran: Implement pcipci failure check
[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 #include <linux/byteorder/generic.h>
56
57 #include <linux/interrupt.h>
58 #include <linux/i2c.h>
59 #include <linux/i2c-algo-bit.h>
60
61 #include <linux/spinlock.h>
62 #define     MAP_NR(x)       virt_to_page(x)
63 #define     ZORAN_HARDWARE  VID_HARDWARE_ZR36067
64 #define     ZORAN_VID_TYPE  ( \
65                                 VID_TYPE_CAPTURE | \
66                                 VID_TYPE_OVERLAY | \
67                                 VID_TYPE_CLIPPING | \
68                                 VID_TYPE_FRAMERAM | \
69                                 VID_TYPE_SCALES | \
70                                 VID_TYPE_MJPEG_DECODER | \
71                                 VID_TYPE_MJPEG_ENCODER \
72                              )
73
74 #include <linux/videodev.h>
75 #include <media/v4l2-common.h>
76 #include "videocodec.h"
77
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 #ifdef CONFIG_VIDEO_V4L2
90         /* we declare some card type definitions here, they mean
91          * the same as the v4l1 ZORAN_VID_TYPE above, except it's v4l2 */
92 #define ZORAN_V4L2_VID_FLAGS ( \
93                                 V4L2_CAP_STREAMING |\
94                                 V4L2_CAP_VIDEO_CAPTURE |\
95                                 V4L2_CAP_VIDEO_OUTPUT |\
96                                 V4L2_CAP_VIDEO_OVERLAY \
97                               )
98 #endif
99
100 #include <asm/byteorder.h>
101
102 const struct zoran_format zoran_formats[] = {
103         {
104                 .name = "15-bit RGB",
105                 .palette = VIDEO_PALETTE_RGB555,
106 #ifdef CONFIG_VIDEO_V4L2
107 #ifdef __LITTLE_ENDIAN
108                 .fourcc = V4L2_PIX_FMT_RGB555,
109 #else
110                 .fourcc = V4L2_PIX_FMT_RGB555X,
111 #endif
112                 .colorspace = V4L2_COLORSPACE_SRGB,
113 #endif
114                 .depth = 15,
115                 .flags = ZORAN_FORMAT_CAPTURE |
116                          ZORAN_FORMAT_OVERLAY,
117         }, {
118                 .name = "16-bit RGB",
119                 .palette = VIDEO_PALETTE_RGB565,
120 #ifdef CONFIG_VIDEO_V4L2
121 #ifdef __LITTLE_ENDIAN
122                 .fourcc = V4L2_PIX_FMT_RGB565,
123 #else
124                 .fourcc = V4L2_PIX_FMT_RGB565X,
125 #endif
126                 .colorspace = V4L2_COLORSPACE_SRGB,
127 #endif
128                 .depth = 16,
129                 .flags = ZORAN_FORMAT_CAPTURE |
130                          ZORAN_FORMAT_OVERLAY,
131         }, {
132                 .name = "24-bit RGB",
133                 .palette = VIDEO_PALETTE_RGB24,
134 #ifdef CONFIG_VIDEO_V4L2
135 #ifdef __LITTLE_ENDIAN
136                 .fourcc = V4L2_PIX_FMT_BGR24,
137 #else
138                 .fourcc = V4L2_PIX_FMT_RGB24,
139 #endif
140                 .colorspace = V4L2_COLORSPACE_SRGB,
141 #endif
142                 .depth = 24,
143                 .flags = ZORAN_FORMAT_CAPTURE |
144                          ZORAN_FORMAT_OVERLAY,
145         }, {
146                 .name = "32-bit RGB",
147                 .palette = VIDEO_PALETTE_RGB32,
148 #ifdef CONFIG_VIDEO_V4L2
149 #ifdef __LITTLE_ENDIAN
150                 .fourcc = V4L2_PIX_FMT_BGR32,
151 #else
152                 .fourcc = V4L2_PIX_FMT_RGB32,
153 #endif
154                 .colorspace = V4L2_COLORSPACE_SRGB,
155 #endif
156                 .depth = 32,
157                 .flags = ZORAN_FORMAT_CAPTURE |
158                          ZORAN_FORMAT_OVERLAY,
159         }, {
160                 .name = "4:2:2, packed, YUYV",
161                 .palette = VIDEO_PALETTE_YUV422,
162 #ifdef CONFIG_VIDEO_V4L2
163                 .fourcc = V4L2_PIX_FMT_YUYV,
164                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
165 #endif
166                 .depth = 16,
167                 .flags = ZORAN_FORMAT_CAPTURE |
168                          ZORAN_FORMAT_OVERLAY,
169         }, {
170                 .name = "Hardware-encoded Motion-JPEG",
171                 .palette = -1,
172 #ifdef CONFIG_VIDEO_V4L2
173                 .fourcc = V4L2_PIX_FMT_MJPEG,
174                 .colorspace = V4L2_COLORSPACE_SMPTE170M,
175 #endif
176                 .depth = 0,
177                 .flags = ZORAN_FORMAT_CAPTURE |
178                          ZORAN_FORMAT_PLAYBACK |
179                          ZORAN_FORMAT_COMPRESSED,
180         }
181 };
182 static const int zoran_num_formats =
183     (sizeof(zoran_formats) / sizeof(struct zoran_format));
184
185 // RJ: Test only - want to test BUZ_USE_HIMEM even when CONFIG_BIGPHYS_AREA is defined
186 #if !defined(CONFIG_BIGPHYS_AREA)
187 //#undef CONFIG_BIGPHYS_AREA
188 #define BUZ_USE_HIMEM
189 #endif
190
191 #if defined(CONFIG_BIGPHYS_AREA)
192 #   include <linux/bigphysarea.h>
193 #endif
194
195 extern int *zr_debug;
196
197 #define dprintk(num, format, args...) \
198         do { \
199                 if (*zr_debug >= num) \
200                         printk(format, ##args); \
201         } while (0)
202
203 extern int v4l_nbufs;
204 extern int v4l_bufsize;
205 extern int jpg_nbufs;
206 extern int jpg_bufsize;
207 extern int pass_through;
208
209 static int lock_norm = 0;       /* 1=Don't change TV standard (norm) */
210 module_param(lock_norm, int, 0);
211 MODULE_PARM_DESC(lock_norm, "Users can't change norm");
212
213 #ifdef CONFIG_VIDEO_V4L2
214         /* small helper function for calculating buffersizes for v4l2
215          * we calculate the nearest higher power-of-two, which
216          * will be the recommended buffersize */
217 static __u32
218 zoran_v4l2_calc_bufsize (struct zoran_jpg_settings *settings)
219 {
220         __u8 div = settings->VerDcm * settings->HorDcm * settings->TmpDcm;
221         __u32 num = (1024 * 512) / (div);
222         __u32 result = 2;
223
224         num--;
225         while (num) {
226                 num >>= 1;
227                 result <<= 1;
228         }
229
230         if (result > jpg_bufsize)
231                 return jpg_bufsize;
232         if (result < 8192)
233                 return 8192;
234         return result;
235 }
236 #endif
237
238 /* forward references */
239 static void v4l_fbuffer_free(struct file *file);
240 static void jpg_fbuffer_free(struct file *file);
241
242 /*
243  *   Allocate the V4L grab buffers
244  *
245  *   These have to be pysically contiguous.
246  *   If v4l_bufsize <= MAX_KMALLOC_MEM we use kmalloc
247  *   else we try to allocate them with bigphysarea_alloc_pages
248  *   if the bigphysarea patch is present in the kernel,
249  *   else we try to use high memory (if the user has bootet
250  *   Linux with the necessary memory left over).
251  */
252
253 #if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
254 static unsigned long
255 get_high_mem (unsigned long size)
256 {
257 /*
258  * Check if there is usable memory at the end of Linux memory
259  * of at least size. Return the physical address of this memory,
260  * return 0 on failure.
261  *
262  * The idea is from Alexandro Rubini's book "Linux device drivers".
263  * The driver from him which is downloadable from O'Reilly's
264  * web site misses the "virt_to_phys(high_memory)" part
265  * (and therefore doesn't work at all - at least with 2.2.x kernels).
266  *
267  * It should be unnecessary to mention that THIS IS DANGEROUS,
268  * if more than one driver at a time has the idea to use this memory!!!!
269  */
270
271         volatile unsigned char __iomem *mem;
272         unsigned char c;
273         unsigned long hi_mem_ph;
274         unsigned long i;
275
276         /* Map the high memory to user space */
277
278         hi_mem_ph = virt_to_phys(high_memory);
279
280         mem = ioremap(hi_mem_ph, size);
281         if (!mem) {
282                 dprintk(1,
283                         KERN_ERR "%s: get_high_mem() - ioremap failed\n",
284                         ZORAN_NAME);
285                 return 0;
286         }
287
288         for (i = 0; i < size; i++) {
289                 /* Check if it is memory */
290                 c = i & 0xff;
291                 writeb(c, mem + i);
292                 if (readb(mem + i) != c)
293                         break;
294                 c = 255 - c;
295                 writeb(c, mem + i);
296                 if (readb(mem + i) != c)
297                         break;
298                 writeb(0, mem + i);     /* zero out memory */
299
300                 /* give the kernel air to breath */
301                 if ((i & 0x3ffff) == 0x3ffff)
302                         schedule();
303         }
304
305         iounmap(mem);
306
307         if (i != size) {
308                 dprintk(1,
309                         KERN_ERR
310                         "%s: get_high_mem() - requested %lu, avail %lu\n",
311                         ZORAN_NAME, size, i);
312                 return 0;
313         }
314
315         return hi_mem_ph;
316 }
317 #endif
318
319 static int
320 v4l_fbuffer_alloc (struct file *file)
321 {
322         struct zoran_fh *fh = file->private_data;
323         struct zoran *zr = fh->zr;
324         int i, off;
325         unsigned char *mem;
326 #if defined(BUZ_USE_HIMEM) && !defined(CONFIG_BIGPHYS_AREA)
327         unsigned long pmem = 0;
328 #endif
329
330         /* we might have old buffers lying around... */
331         if (fh->v4l_buffers.ready_to_be_freed) {
332                 v4l_fbuffer_free(file);
333         }
334
335         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
336                 if (fh->v4l_buffers.buffer[i].fbuffer)
337                         dprintk(2,
338                                 KERN_WARNING
339                                 "%s: v4l_fbuffer_alloc() - buffer %d allready allocated!?\n",
340                                 ZR_DEVNAME(zr), i);
341
342                 //udelay(20);
343                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
344                         /* Use kmalloc */
345
346                         mem =
347                             (unsigned char *) kmalloc(fh->v4l_buffers.
348                                                       buffer_size,
349                                                       GFP_KERNEL);
350                         if (mem == 0) {
351                                 dprintk(1,
352                                         KERN_ERR
353                                         "%s: v4l_fbuffer_alloc() - kmalloc for V4L buf %d failed\n",
354                                         ZR_DEVNAME(zr), i);
355                                 v4l_fbuffer_free(file);
356                                 return -ENOBUFS;
357                         }
358                         fh->v4l_buffers.buffer[i].fbuffer = mem;
359                         fh->v4l_buffers.buffer[i].fbuffer_phys =
360                             virt_to_phys(mem);
361                         fh->v4l_buffers.buffer[i].fbuffer_bus =
362                             virt_to_bus(mem);
363                         for (off = 0; off < fh->v4l_buffers.buffer_size;
364                              off += PAGE_SIZE)
365                                 SetPageReserved(MAP_NR(mem + off));
366                         dprintk(4,
367                                 KERN_INFO
368                                 "%s: v4l_fbuffer_alloc() - V4L frame %d mem 0x%lx (bus: 0x%lx)\n",
369                                 ZR_DEVNAME(zr), i, (unsigned long) mem,
370                                 virt_to_bus(mem));
371                 } else {
372 #if defined(CONFIG_BIGPHYS_AREA)
373                         /* Use bigphysarea_alloc_pages */
374
375                         int n =
376                             (fh->v4l_buffers.buffer_size + PAGE_SIZE -
377                              1) / PAGE_SIZE;
378
379                         mem =
380                             (unsigned char *) bigphysarea_alloc_pages(n, 0,
381                                                                       GFP_KERNEL);
382                         if (mem == 0) {
383                                 dprintk(1,
384                                         KERN_ERR
385                                         "%s: v4l_fbuffer_alloc() - bigphysarea_alloc_pages for V4L buf %d failed\n",
386                                         ZR_DEVNAME(zr), i);
387                                 v4l_fbuffer_free(file);
388                                 return -ENOBUFS;
389                         }
390                         fh->v4l_buffers.buffer[i].fbuffer = mem;
391                         fh->v4l_buffers.buffer[i].fbuffer_phys =
392                             virt_to_phys(mem);
393                         fh->v4l_buffers.buffer[i].fbuffer_bus =
394                             virt_to_bus(mem);
395                         dprintk(4,
396                                 KERN_INFO
397                                 "%s: Bigphysarea frame %d mem 0x%x (bus: 0x%x)\n",
398                                 ZR_DEVNAME(zr), i, (unsigned) mem,
399                                 (unsigned) virt_to_bus(mem));
400
401                         /* Zero out the allocated memory */
402                         memset(fh->v4l_buffers.buffer[i].fbuffer, 0,
403                                fh->v4l_buffers.buffer_size);
404 #elif defined(BUZ_USE_HIMEM)
405
406                         /* Use high memory which has been left at boot time */
407
408                         /* Ok., Ok. this is an evil hack - we make
409                          * the assumption that physical addresses are
410                          * the same as bus addresses (true at least
411                          * for Intel processors). The whole method of
412                          * obtaining and using this memory is not very
413                          * nice - but I hope it saves some poor users
414                          * from kernel hacking, which might have even
415                          * more evil results */
416
417                         if (i == 0) {
418                                 int size =
419                                     fh->v4l_buffers.num_buffers *
420                                     fh->v4l_buffers.buffer_size;
421
422                                 pmem = get_high_mem(size);
423                                 if (pmem == 0) {
424                                         dprintk(1,
425                                                 KERN_ERR
426                                                 "%s: v4l_fbuffer_alloc() - get_high_mem (size = %d KB) for V4L bufs failed\n",
427                                                 ZR_DEVNAME(zr), size >> 10);
428                                         return -ENOBUFS;
429                                 }
430                                 fh->v4l_buffers.buffer[0].fbuffer = NULL;
431                                 fh->v4l_buffers.buffer[0].fbuffer_phys = pmem;
432                                 fh->v4l_buffers.buffer[0].fbuffer_bus = pmem;
433                                 dprintk(4,
434                                         KERN_INFO
435                                         "%s: v4l_fbuffer_alloc() - using %d KB high memory\n",
436                                         ZR_DEVNAME(zr), size >> 10);
437                         } else {
438                                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
439                                 fh->v4l_buffers.buffer[i].fbuffer_phys =
440                                     pmem + i * fh->v4l_buffers.buffer_size;
441                                 fh->v4l_buffers.buffer[i].fbuffer_bus =
442                                     pmem + i * fh->v4l_buffers.buffer_size;
443                         }
444 #else
445                         /* No bigphysarea present, usage of high memory disabled,
446                          * but user wants buffers of more than MAX_KMALLOC_MEM */
447                         dprintk(1,
448                                 KERN_ERR
449                                 "%s: v4l_fbuffer_alloc() - no bigphysarea_patch present, usage of high memory disabled,\n",
450                                 ZR_DEVNAME(zr));
451                         dprintk(1,
452                                 KERN_ERR
453                                 "%s: v4l_fbuffer_alloc() - sorry, could not allocate %d V4L buffers of size %d KB.\n",
454                                 ZR_DEVNAME(zr), fh->v4l_buffers.num_buffers,
455                                 fh->v4l_buffers.buffer_size >> 10);
456                         return -ENOBUFS;
457 #endif
458                 }
459         }
460
461         fh->v4l_buffers.allocated = 1;
462
463         return 0;
464 }
465
466 /* free the V4L grab buffers */
467 static void
468 v4l_fbuffer_free (struct file *file)
469 {
470         struct zoran_fh *fh = file->private_data;
471         struct zoran *zr = fh->zr;
472         int i, off;
473         unsigned char *mem;
474
475         dprintk(4, KERN_INFO "%s: v4l_fbuffer_free()\n", ZR_DEVNAME(zr));
476
477         for (i = 0; i < fh->v4l_buffers.num_buffers; i++) {
478                 if (!fh->v4l_buffers.buffer[i].fbuffer)
479                         continue;
480
481                 if (fh->v4l_buffers.buffer_size <= MAX_KMALLOC_MEM) {
482                         mem = fh->v4l_buffers.buffer[i].fbuffer;
483                         for (off = 0; off < fh->v4l_buffers.buffer_size;
484                              off += PAGE_SIZE)
485                                 ClearPageReserved(MAP_NR(mem + off));
486                         kfree((void *) fh->v4l_buffers.buffer[i].fbuffer);
487                 }
488 #if defined(CONFIG_BIGPHYS_AREA)
489                 else
490                         bigphysarea_free_pages((void *) fh->v4l_buffers.
491                                                buffer[i].fbuffer);
492 #endif
493                 fh->v4l_buffers.buffer[i].fbuffer = NULL;
494         }
495
496         fh->v4l_buffers.allocated = 0;
497         fh->v4l_buffers.ready_to_be_freed = 0;
498 }
499
500 /*
501  *   Allocate the MJPEG grab buffers.
502  *
503  *   If the requested buffer size is smaller than MAX_KMALLOC_MEM,
504  *   kmalloc is used to request a physically contiguous area,
505  *   else we allocate the memory in framgents with get_zeroed_page.
506  *
507  *   If a Natoma chipset is present and this is a revision 1 zr36057,
508  *   each MJPEG buffer needs to be physically contiguous.
509  *   (RJ: This statement is from Dave Perks' original driver,
510  *   I could never check it because I have a zr36067)
511  *   The driver cares about this because it reduces the buffer
512  *   size to MAX_KMALLOC_MEM in that case (which forces contiguous allocation).
513  *
514  *   RJ: The contents grab buffers needs never be accessed in the driver.
515  *       Therefore there is no need to allocate them with vmalloc in order
516  *       to get a contiguous virtual memory space.
517  *       I don't understand why many other drivers first allocate them with
518  *       vmalloc (which uses internally also get_zeroed_page, but delivers you
519  *       virtual addresses) and then again have to make a lot of efforts
520  *       to get the physical address.
521  *
522  *   Ben Capper:
523  *       On big-endian architectures (such as ppc) some extra steps
524  *       are needed. When reading and writing to the stat_com array
525  *       and fragment buffers, the device expects to see little-
526  *       endian values. The use of cpu_to_le32() and le32_to_cpu()
527  *       in this function (and one or two others in zoran_device.c)
528  *       ensure that these values are always stored in little-endian
529  *       form, regardless of architecture. The zr36057 does Very Bad
530  *       Things on big endian architectures if the stat_com array
531  *       and fragment buffers are not little-endian.
532  */
533
534 static int
535 jpg_fbuffer_alloc (struct file *file)
536 {
537         struct zoran_fh *fh = file->private_data;
538         struct zoran *zr = fh->zr;
539         int i, j, off;
540         unsigned long mem;
541
542         /* we might have old buffers lying around */
543         if (fh->jpg_buffers.ready_to_be_freed) {
544                 jpg_fbuffer_free(file);
545         }
546
547         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
548                 if (fh->jpg_buffers.buffer[i].frag_tab)
549                         dprintk(2,
550                                 KERN_WARNING
551                                 "%s: jpg_fbuffer_alloc() - buffer %d allready allocated!?\n",
552                                 ZR_DEVNAME(zr), i);
553
554                 /* Allocate fragment table for this buffer */
555
556                 mem = get_zeroed_page(GFP_KERNEL);
557                 if (mem == 0) {
558                         dprintk(1,
559                                 KERN_ERR
560                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page (frag_tab) failed for buffer %d\n",
561                                 ZR_DEVNAME(zr), i);
562                         jpg_fbuffer_free(file);
563                         return -ENOBUFS;
564                 }
565                 memset((void *) mem, 0, PAGE_SIZE);
566                 fh->jpg_buffers.buffer[i].frag_tab = (u32 *) mem;
567                 fh->jpg_buffers.buffer[i].frag_tab_bus =
568                     virt_to_bus((void *) mem);
569
570                 //if (alloc_contig) {
571                 if (fh->jpg_buffers.need_contiguous) {
572                         mem =
573                             (unsigned long) kmalloc(fh->jpg_buffers.
574                                                     buffer_size,
575                                                     GFP_KERNEL);
576                         if (mem == 0) {
577                                 dprintk(1,
578                                         KERN_ERR
579                                         "%s: jpg_fbuffer_alloc() - kmalloc failed for buffer %d\n",
580                                         ZR_DEVNAME(zr), i);
581                                 jpg_fbuffer_free(file);
582                                 return -ENOBUFS;
583                         }
584                         fh->jpg_buffers.buffer[i].frag_tab[0] =
585                             cpu_to_le32(virt_to_bus((void *) mem));
586                         fh->jpg_buffers.buffer[i].frag_tab[1] =
587                             cpu_to_le32(((fh->jpg_buffers.buffer_size / 4) << 1) | 1);
588                         for (off = 0; off < fh->jpg_buffers.buffer_size;
589                              off += PAGE_SIZE)
590                                 SetPageReserved(MAP_NR(mem + off));
591                 } else {
592                         /* jpg_bufsize is allreay page aligned */
593                         for (j = 0;
594                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
595                              j++) {
596                                 mem = get_zeroed_page(GFP_KERNEL);
597                                 if (mem == 0) {
598                                         dprintk(1,
599                                                 KERN_ERR
600                                                 "%s: jpg_fbuffer_alloc() - get_zeroed_page failed for buffer %d\n",
601                                                 ZR_DEVNAME(zr), i);
602                                         jpg_fbuffer_free(file);
603                                         return -ENOBUFS;
604                                 }
605
606                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
607                                     cpu_to_le32(virt_to_bus((void *) mem));
608                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
609                                                                    1] =
610                                     cpu_to_le32((PAGE_SIZE / 4) << 1);
611                                 SetPageReserved(MAP_NR(mem));
612                         }
613
614                         fh->jpg_buffers.buffer[i].frag_tab[2 * j - 1] |= cpu_to_le32(1);
615                 }
616         }
617
618         dprintk(4,
619                 KERN_DEBUG "%s: jpg_fbuffer_alloc() - %d KB allocated\n",
620                 ZR_DEVNAME(zr),
621                 (fh->jpg_buffers.num_buffers *
622                  fh->jpg_buffers.buffer_size) >> 10);
623
624         fh->jpg_buffers.allocated = 1;
625
626         return 0;
627 }
628
629 /* free the MJPEG grab buffers */
630 static void
631 jpg_fbuffer_free (struct file *file)
632 {
633         struct zoran_fh *fh = file->private_data;
634         struct zoran *zr = fh->zr;
635         int i, j, off;
636         unsigned char *mem;
637
638         dprintk(4, KERN_DEBUG "%s: jpg_fbuffer_free()\n", ZR_DEVNAME(zr));
639
640         for (i = 0; i < fh->jpg_buffers.num_buffers; i++) {
641                 if (!fh->jpg_buffers.buffer[i].frag_tab)
642                         continue;
643
644                 //if (alloc_contig) {
645                 if (fh->jpg_buffers.need_contiguous) {
646                         if (fh->jpg_buffers.buffer[i].frag_tab[0]) {
647                                 mem = (unsigned char *) bus_to_virt(le32_to_cpu(
648                                         fh->jpg_buffers.buffer[i].frag_tab[0]));
649                                 for (off = 0;
650                                      off < fh->jpg_buffers.buffer_size;
651                                      off += PAGE_SIZE)
652                                         ClearPageReserved(MAP_NR
653                                                           (mem + off));
654                                 kfree(mem);
655                                 fh->jpg_buffers.buffer[i].frag_tab[0] = 0;
656                                 fh->jpg_buffers.buffer[i].frag_tab[1] = 0;
657                         }
658                 } else {
659                         for (j = 0;
660                              j < fh->jpg_buffers.buffer_size / PAGE_SIZE;
661                              j++) {
662                                 if (!fh->jpg_buffers.buffer[i].
663                                     frag_tab[2 * j])
664                                         break;
665                                 ClearPageReserved(MAP_NR
666                                                   (bus_to_virt
667                                                    (le32_to_cpu
668                                                     (fh->jpg_buffers.
669                                                      buffer[i].frag_tab[2 *
670                                                                        j]))));
671                                 free_page((unsigned long)
672                                           bus_to_virt
673                                                   (le32_to_cpu
674                                                    (fh->jpg_buffers.
675                                                       buffer[i].
676                                                       frag_tab[2 * j])));
677                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j] =
678                                     0;
679                                 fh->jpg_buffers.buffer[i].frag_tab[2 * j +
680                                                                    1] = 0;
681                         }
682                 }
683
684                 free_page((unsigned long) fh->jpg_buffers.buffer[i].
685                           frag_tab);
686                 fh->jpg_buffers.buffer[i].frag_tab = NULL;
687         }
688
689         fh->jpg_buffers.allocated = 0;
690         fh->jpg_buffers.ready_to_be_freed = 0;
691 }
692
693 /*
694  *   V4L Buffer grabbing
695  */
696
697 static int
698 zoran_v4l_set_format (struct file               *file,
699                       int                        width,
700                       int                        height,
701                       const struct zoran_format *format)
702 {
703         struct zoran_fh *fh = file->private_data;
704         struct zoran *zr = fh->zr;
705         int bpp;
706
707         /* Check size and format of the grab wanted */
708
709         if (height < BUZ_MIN_HEIGHT || width < BUZ_MIN_WIDTH ||
710             height > BUZ_MAX_HEIGHT || width > BUZ_MAX_WIDTH) {
711                 dprintk(1,
712                         KERN_ERR
713                         "%s: v4l_set_format() - wrong frame size (%dx%d)\n",
714                         ZR_DEVNAME(zr), width, height);
715                 return -EINVAL;
716         }
717
718         bpp = (format->depth + 7) / 8;
719
720         /* Check against available buffer size */
721         if (height * width * bpp > fh->v4l_buffers.buffer_size) {
722                 dprintk(1,
723                         KERN_ERR
724                         "%s: v4l_set_format() - video buffer size (%d kB) is too small\n",
725                         ZR_DEVNAME(zr), fh->v4l_buffers.buffer_size >> 10);
726                 return -EINVAL;
727         }
728
729         /* The video front end needs 4-byte alinged line sizes */
730
731         if ((bpp == 2 && (width & 1)) || (bpp == 3 && (width & 3))) {
732                 dprintk(1,
733                         KERN_ERR
734                         "%s: v4l_set_format() - wrong frame alingment\n",
735                         ZR_DEVNAME(zr));
736                 return -EINVAL;
737         }
738
739         fh->v4l_settings.width = width;
740         fh->v4l_settings.height = height;
741         fh->v4l_settings.format = format;
742         fh->v4l_settings.bytesperline = bpp * fh->v4l_settings.width;
743
744         return 0;
745 }
746
747 static int
748 zoran_v4l_queue_frame (struct file *file,
749                        int          num)
750 {
751         struct zoran_fh *fh = file->private_data;
752         struct zoran *zr = fh->zr;
753         unsigned long flags;
754         int res = 0;
755
756         if (!fh->v4l_buffers.allocated) {
757                 dprintk(1,
758                         KERN_ERR
759                         "%s: v4l_queue_frame() - buffers not yet allocated\n",
760                         ZR_DEVNAME(zr));
761                 res = -ENOMEM;
762         }
763
764         /* No grabbing outside the buffer range! */
765         if (num >= fh->v4l_buffers.num_buffers || num < 0) {
766                 dprintk(1,
767                         KERN_ERR
768                         "%s: v4l_queue_frame() - buffer %d is out of range\n",
769                         ZR_DEVNAME(zr), num);
770                 res = -EINVAL;
771         }
772
773         spin_lock_irqsave(&zr->spinlock, flags);
774
775         if (fh->v4l_buffers.active == ZORAN_FREE) {
776                 if (zr->v4l_buffers.active == ZORAN_FREE) {
777                         zr->v4l_buffers = fh->v4l_buffers;
778                         fh->v4l_buffers.active = ZORAN_ACTIVE;
779                 } else {
780                         dprintk(1,
781                                 KERN_ERR
782                                 "%s: v4l_queue_frame() - another session is already capturing\n",
783                                 ZR_DEVNAME(zr));
784                         res = -EBUSY;
785                 }
786         }
787
788         /* make sure a grab isn't going on currently with this buffer */
789         if (!res) {
790                 switch (zr->v4l_buffers.buffer[num].state) {
791                 default:
792                 case BUZ_STATE_PEND:
793                         if (zr->v4l_buffers.active == ZORAN_FREE) {
794                                 fh->v4l_buffers.active = ZORAN_FREE;
795                                 zr->v4l_buffers.allocated = 0;
796                         }
797                         res = -EBUSY;   /* what are you doing? */
798                         break;
799                 case BUZ_STATE_DONE:
800                         dprintk(2,
801                                 KERN_WARNING
802                                 "%s: v4l_queue_frame() - queueing buffer %d in state DONE!?\n",
803                                 ZR_DEVNAME(zr), num);
804                 case BUZ_STATE_USER:
805                         /* since there is at least one unused buffer there's room for at least
806                          * one more pend[] entry */
807                         zr->v4l_pend[zr->v4l_pend_head++ &
808                                         V4L_MASK_FRAME] = num;
809                         zr->v4l_buffers.buffer[num].state = BUZ_STATE_PEND;
810                         zr->v4l_buffers.buffer[num].bs.length =
811                             fh->v4l_settings.bytesperline *
812                             zr->v4l_settings.height;
813                         fh->v4l_buffers.buffer[num] =
814                             zr->v4l_buffers.buffer[num];
815                         break;
816                 }
817         }
818
819         spin_unlock_irqrestore(&zr->spinlock, flags);
820
821         if (!res && zr->v4l_buffers.active == ZORAN_FREE)
822                 zr->v4l_buffers.active = fh->v4l_buffers.active;
823
824         return res;
825 }
826
827 static int
828 v4l_grab (struct file       *file,
829           struct video_mmap *mp)
830 {
831         struct zoran_fh *fh = file->private_data;
832         struct zoran *zr = fh->zr;
833         int res = 0, i;
834
835         for (i = 0; i < zoran_num_formats; i++) {
836                 if (zoran_formats[i].palette == mp->format &&
837                     zoran_formats[i].flags & ZORAN_FORMAT_CAPTURE &&
838                     !(zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED))
839                         break;
840         }
841         if (i == zoran_num_formats || zoran_formats[i].depth == 0) {
842                 dprintk(1,
843                         KERN_ERR
844                         "%s: v4l_grab() - wrong bytes-per-pixel format\n",
845                         ZR_DEVNAME(zr));
846                 return -EINVAL;
847         }
848
849         /*
850          * To minimize the time spent in the IRQ routine, we avoid setting up
851          * the video front end there.
852          * If this grab has different parameters from a running streaming capture
853          * we stop the streaming capture and start it over again.
854          */
855         if (zr->v4l_memgrab_active &&
856             (zr->v4l_settings.width != mp->width ||
857              zr->v4l_settings.height != mp->height ||
858              zr->v4l_settings.format->palette != mp->format)) {
859                 res = wait_grab_pending(zr);
860                 if (res)
861                         return res;
862         }
863         if ((res = zoran_v4l_set_format(file,
864                                         mp->width,
865                                         mp->height,
866                                         &zoran_formats[i])))
867                 return res;
868         zr->v4l_settings = fh->v4l_settings;
869
870         /* queue the frame in the pending queue */
871         if ((res = zoran_v4l_queue_frame(file, mp->frame))) {
872                 fh->v4l_buffers.active = ZORAN_FREE;
873                 return res;
874         }
875
876         /* put the 36057 into frame grabbing mode */
877         if (!res && !zr->v4l_memgrab_active)
878                 zr36057_set_memgrab(zr, 1);
879
880         //dprintk(4, KERN_INFO "%s: Frame grab 3...\n", ZR_DEVNAME(zr));
881
882         return res;
883 }
884
885 /*
886  * Sync on a V4L buffer
887  */
888
889 static int
890 v4l_sync (struct file *file,
891           int          frame)
892 {
893         struct zoran_fh *fh = file->private_data;
894         struct zoran *zr = fh->zr;
895         unsigned long flags;
896
897         if (fh->v4l_buffers.active == ZORAN_FREE) {
898                 dprintk(1,
899                         KERN_ERR
900                         "%s: v4l_sync() - no grab active for this session\n",
901                         ZR_DEVNAME(zr));
902                 return -EINVAL;
903         }
904
905         /* check passed-in frame number */
906         if (frame >= fh->v4l_buffers.num_buffers || frame < 0) {
907                 dprintk(1,
908                         KERN_ERR "%s: v4l_sync() - frame %d is invalid\n",
909                         ZR_DEVNAME(zr), frame);
910                 return -EINVAL;
911         }
912
913         /* Check if is buffer was queued at all */
914         if (zr->v4l_buffers.buffer[frame].state == BUZ_STATE_USER) {
915                 dprintk(1,
916                         KERN_ERR
917                         "%s: v4l_sync() - attempt to sync on a buffer which was not queued?\n",
918                         ZR_DEVNAME(zr));
919                 return -EPROTO;
920         }
921
922         /* wait on this buffer to get ready */
923         if (!wait_event_interruptible_timeout(zr->v4l_capq,
924                                 (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_PEND),
925                                 10*HZ))
926                 return -ETIME;
927         if (signal_pending(current))
928                 return -ERESTARTSYS;
929
930         /* buffer should now be in BUZ_STATE_DONE */
931         if (zr->v4l_buffers.buffer[frame].state != BUZ_STATE_DONE)
932                 dprintk(2,
933                         KERN_ERR "%s: v4l_sync() - internal state error\n",
934                         ZR_DEVNAME(zr));
935
936         zr->v4l_buffers.buffer[frame].state = BUZ_STATE_USER;
937         fh->v4l_buffers.buffer[frame] = zr->v4l_buffers.buffer[frame];
938
939         spin_lock_irqsave(&zr->spinlock, flags);
940
941         /* Check if streaming capture has finished */
942         if (zr->v4l_pend_tail == zr->v4l_pend_head) {
943                 zr36057_set_memgrab(zr, 0);
944                 if (zr->v4l_buffers.active == ZORAN_ACTIVE) {
945                         fh->v4l_buffers.active = zr->v4l_buffers.active =
946                             ZORAN_FREE;
947                         zr->v4l_buffers.allocated = 0;
948                 }
949         }
950
951         spin_unlock_irqrestore(&zr->spinlock, flags);
952
953         return 0;
954 }
955
956 /*
957  *   Queue a MJPEG buffer for capture/playback
958  */
959
960 static int
961 zoran_jpg_queue_frame (struct file          *file,
962                        int                   num,
963                        enum zoran_codec_mode mode)
964 {
965         struct zoran_fh *fh = file->private_data;
966         struct zoran *zr = fh->zr;
967         unsigned long flags;
968         int res = 0;
969
970         /* Check if buffers are allocated */
971         if (!fh->jpg_buffers.allocated) {
972                 dprintk(1,
973                         KERN_ERR
974                         "%s: jpg_queue_frame() - buffers not yet allocated\n",
975                         ZR_DEVNAME(zr));
976                 return -ENOMEM;
977         }
978
979         /* No grabbing outside the buffer range! */
980         if (num >= fh->jpg_buffers.num_buffers || num < 0) {
981                 dprintk(1,
982                         KERN_ERR
983                         "%s: jpg_queue_frame() - buffer %d out of range\n",
984                         ZR_DEVNAME(zr), num);
985                 return -EINVAL;
986         }
987
988         /* what is the codec mode right now? */
989         if (zr->codec_mode == BUZ_MODE_IDLE) {
990                 zr->jpg_settings = fh->jpg_settings;
991         } else if (zr->codec_mode != mode) {
992                 /* wrong codec mode active - invalid */
993                 dprintk(1,
994                         KERN_ERR
995                         "%s: jpg_queue_frame() - codec in wrong mode\n",
996                         ZR_DEVNAME(zr));
997                 return -EINVAL;
998         }
999
1000         if (fh->jpg_buffers.active == ZORAN_FREE) {
1001                 if (zr->jpg_buffers.active == ZORAN_FREE) {
1002                         zr->jpg_buffers = fh->jpg_buffers;
1003                         fh->jpg_buffers.active = ZORAN_ACTIVE;
1004                 } else {
1005                         dprintk(1,
1006                                 KERN_ERR
1007                                 "%s: jpg_queue_frame() - another session is already capturing\n",
1008                                 ZR_DEVNAME(zr));
1009                         res = -EBUSY;
1010                 }
1011         }
1012
1013         if (!res && zr->codec_mode == BUZ_MODE_IDLE) {
1014                 /* Ok load up the jpeg codec */
1015                 zr36057_enable_jpg(zr, mode);
1016         }
1017
1018         spin_lock_irqsave(&zr->spinlock, flags);
1019
1020         if (!res) {
1021                 switch (zr->jpg_buffers.buffer[num].state) {
1022                 case BUZ_STATE_DONE:
1023                         dprintk(2,
1024                                 KERN_WARNING
1025                                 "%s: jpg_queue_frame() - queing frame in BUZ_STATE_DONE state!?\n",
1026                                 ZR_DEVNAME(zr));
1027                 case BUZ_STATE_USER:
1028                         /* since there is at least one unused buffer there's room for at
1029                          *least one more pend[] entry */
1030                         zr->jpg_pend[zr->jpg_que_head++ & BUZ_MASK_FRAME] =
1031                             num;
1032                         zr->jpg_buffers.buffer[num].state = BUZ_STATE_PEND;
1033                         fh->jpg_buffers.buffer[num] =
1034                             zr->jpg_buffers.buffer[num];
1035                         zoran_feed_stat_com(zr);
1036                         break;
1037                 default:
1038                 case BUZ_STATE_DMA:
1039                 case BUZ_STATE_PEND:
1040                         if (zr->jpg_buffers.active == ZORAN_FREE) {
1041                                 fh->jpg_buffers.active = ZORAN_FREE;
1042                                 zr->jpg_buffers.allocated = 0;
1043                         }
1044                         res = -EBUSY;   /* what are you doing? */
1045                         break;
1046                 }
1047         }
1048
1049         spin_unlock_irqrestore(&zr->spinlock, flags);
1050
1051         if (!res && zr->jpg_buffers.active == ZORAN_FREE) {
1052                 zr->jpg_buffers.active = fh->jpg_buffers.active;
1053         }
1054
1055         return res;
1056 }
1057
1058 static int
1059 jpg_qbuf (struct file          *file,
1060           int                   frame,
1061           enum zoran_codec_mode mode)
1062 {
1063         struct zoran_fh *fh = file->private_data;
1064         struct zoran *zr = fh->zr;
1065         int res = 0;
1066
1067         /* Does the user want to stop streaming? */
1068         if (frame < 0) {
1069                 if (zr->codec_mode == mode) {
1070                         if (fh->jpg_buffers.active == ZORAN_FREE) {
1071                                 dprintk(1,
1072                                         KERN_ERR
1073                                         "%s: jpg_qbuf(-1) - session not active\n",
1074                                         ZR_DEVNAME(zr));
1075                                 return -EINVAL;
1076                         }
1077                         fh->jpg_buffers.active = zr->jpg_buffers.active =
1078                             ZORAN_FREE;
1079                         zr->jpg_buffers.allocated = 0;
1080                         zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1081                         return 0;
1082                 } else {
1083                         dprintk(1,
1084                                 KERN_ERR
1085                                 "%s: jpg_qbuf() - stop streaming but not in streaming mode\n",
1086                                 ZR_DEVNAME(zr));
1087                         return -EINVAL;
1088                 }
1089         }
1090
1091         if ((res = zoran_jpg_queue_frame(file, frame, mode)))
1092                 return res;
1093
1094         /* Start the jpeg codec when the first frame is queued  */
1095         if (!res && zr->jpg_que_head == 1)
1096                 jpeg_start(zr);
1097
1098         return res;
1099 }
1100
1101 /*
1102  *   Sync on a MJPEG buffer
1103  */
1104
1105 static int
1106 jpg_sync (struct file       *file,
1107           struct zoran_sync *bs)
1108 {
1109         struct zoran_fh *fh = file->private_data;
1110         struct zoran *zr = fh->zr;
1111         unsigned long flags;
1112         int frame;
1113
1114         if (fh->jpg_buffers.active == ZORAN_FREE) {
1115                 dprintk(1,
1116                         KERN_ERR
1117                         "%s: jpg_sync() - capture is not currently active\n",
1118                         ZR_DEVNAME(zr));
1119                 return -EINVAL;
1120         }
1121         if (zr->codec_mode != BUZ_MODE_MOTION_DECOMPRESS &&
1122             zr->codec_mode != BUZ_MODE_MOTION_COMPRESS) {
1123                 dprintk(1,
1124                         KERN_ERR
1125                         "%s: jpg_sync() - codec not in streaming mode\n",
1126                         ZR_DEVNAME(zr));
1127                 return -EINVAL;
1128         }
1129         if (!wait_event_interruptible_timeout(zr->jpg_capq,
1130                         (zr->jpg_que_tail != zr->jpg_dma_tail ||
1131                          zr->jpg_dma_tail == zr->jpg_dma_head),
1132                         10*HZ)) {
1133                 int isr;
1134
1135                 btand(~ZR36057_JMC_Go_en, ZR36057_JMC);
1136                 udelay(1);
1137                 zr->codec->control(zr->codec, CODEC_G_STATUS,
1138                                            sizeof(isr), &isr);
1139                 dprintk(1,
1140                         KERN_ERR
1141                         "%s: jpg_sync() - timeout: codec isr=0x%02x\n",
1142                         ZR_DEVNAME(zr), isr);
1143
1144                 return -ETIME;
1145
1146         }
1147         if (signal_pending(current))
1148                 return -ERESTARTSYS;
1149
1150         spin_lock_irqsave(&zr->spinlock, flags);
1151
1152         if (zr->jpg_dma_tail != zr->jpg_dma_head)
1153                 frame = zr->jpg_pend[zr->jpg_que_tail++ & BUZ_MASK_FRAME];
1154         else
1155                 frame = zr->jpg_pend[zr->jpg_que_tail & BUZ_MASK_FRAME];
1156
1157         /* buffer should now be in BUZ_STATE_DONE */
1158         if (*zr_debug > 0)
1159                 if (zr->jpg_buffers.buffer[frame].state != BUZ_STATE_DONE)
1160                         dprintk(2,
1161                                 KERN_ERR
1162                                 "%s: jpg_sync() - internal state error\n",
1163                                 ZR_DEVNAME(zr));
1164
1165         *bs = zr->jpg_buffers.buffer[frame].bs;
1166         bs->frame = frame;
1167         zr->jpg_buffers.buffer[frame].state = BUZ_STATE_USER;
1168         fh->jpg_buffers.buffer[frame] = zr->jpg_buffers.buffer[frame];
1169
1170         spin_unlock_irqrestore(&zr->spinlock, flags);
1171
1172         return 0;
1173 }
1174
1175 static void
1176 zoran_open_init_session (struct file *file)
1177 {
1178         int i;
1179         struct zoran_fh *fh = file->private_data;
1180         struct zoran *zr = fh->zr;
1181
1182         /* Per default, map the V4L Buffers */
1183         fh->map_mode = ZORAN_MAP_MODE_RAW;
1184
1185         /* take over the card's current settings */
1186         fh->overlay_settings = zr->overlay_settings;
1187         fh->overlay_settings.is_set = 0;
1188         fh->overlay_settings.format = zr->overlay_settings.format;
1189         fh->overlay_active = ZORAN_FREE;
1190
1191         /* v4l settings */
1192         fh->v4l_settings = zr->v4l_settings;
1193
1194         /* v4l_buffers */
1195         memset(&fh->v4l_buffers, 0, sizeof(struct zoran_v4l_struct));
1196         for (i = 0; i < VIDEO_MAX_FRAME; i++) {
1197                 fh->v4l_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1198                 fh->v4l_buffers.buffer[i].bs.frame = i;
1199         }
1200         fh->v4l_buffers.allocated = 0;
1201         fh->v4l_buffers.ready_to_be_freed = 0;
1202         fh->v4l_buffers.active = ZORAN_FREE;
1203         fh->v4l_buffers.buffer_size = v4l_bufsize;
1204         fh->v4l_buffers.num_buffers = v4l_nbufs;
1205
1206         /* jpg settings */
1207         fh->jpg_settings = zr->jpg_settings;
1208
1209         /* jpg_buffers */
1210         memset(&fh->jpg_buffers, 0, sizeof(struct zoran_jpg_struct));
1211         for (i = 0; i < BUZ_MAX_FRAME; i++) {
1212                 fh->jpg_buffers.buffer[i].state = BUZ_STATE_USER;       /* nothing going on */
1213                 fh->jpg_buffers.buffer[i].bs.frame = i;
1214         }
1215         fh->jpg_buffers.need_contiguous = zr->jpg_buffers.need_contiguous;
1216         fh->jpg_buffers.allocated = 0;
1217         fh->jpg_buffers.ready_to_be_freed = 0;
1218         fh->jpg_buffers.active = ZORAN_FREE;
1219         fh->jpg_buffers.buffer_size = jpg_bufsize;
1220         fh->jpg_buffers.num_buffers = jpg_nbufs;
1221 }
1222
1223 static void
1224 zoran_close_end_session (struct file *file)
1225 {
1226         struct zoran_fh *fh = file->private_data;
1227         struct zoran *zr = fh->zr;
1228
1229         /* overlay */
1230         if (fh->overlay_active != ZORAN_FREE) {
1231                 fh->overlay_active = zr->overlay_active = ZORAN_FREE;
1232                 zr->v4l_overlay_active = 0;
1233                 if (!zr->v4l_memgrab_active)
1234                         zr36057_overlay(zr, 0);
1235                 zr->overlay_mask = NULL;
1236         }
1237
1238         /* v4l capture */
1239         if (fh->v4l_buffers.active != ZORAN_FREE) {
1240                 zr36057_set_memgrab(zr, 0);
1241                 zr->v4l_buffers.allocated = 0;
1242                 zr->v4l_buffers.active = fh->v4l_buffers.active =
1243                     ZORAN_FREE;
1244         }
1245
1246         /* v4l buffers */
1247         if (fh->v4l_buffers.allocated ||
1248             fh->v4l_buffers.ready_to_be_freed) {
1249                 v4l_fbuffer_free(file);
1250         }
1251
1252         /* jpg capture */
1253         if (fh->jpg_buffers.active != ZORAN_FREE) {
1254                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1255                 zr->jpg_buffers.allocated = 0;
1256                 zr->jpg_buffers.active = fh->jpg_buffers.active =
1257                     ZORAN_FREE;
1258         }
1259
1260         /* jpg buffers */
1261         if (fh->jpg_buffers.allocated ||
1262             fh->jpg_buffers.ready_to_be_freed) {
1263                 jpg_fbuffer_free(file);
1264         }
1265 }
1266
1267 /*
1268  *   Open a zoran card. Right now the flags stuff is just playing
1269  */
1270
1271 static int
1272 zoran_open (struct inode *inode,
1273             struct file  *file)
1274 {
1275         unsigned int minor = iminor(inode);
1276         struct zoran *zr = NULL;
1277         struct zoran_fh *fh;
1278         int i, res, first_open = 0, have_module_locks = 0;
1279
1280         /* find the device */
1281         for (i = 0; i < zoran_num; i++) {
1282                 if (zoran[i].video_dev->minor == minor) {
1283                         zr = &zoran[i];
1284                         break;
1285                 }
1286         }
1287
1288         if (!zr) {
1289                 dprintk(1, KERN_ERR "%s: device not found!\n", ZORAN_NAME);
1290                 res = -ENODEV;
1291                 goto open_unlock_and_return;
1292         }
1293
1294         /* see fs/device.c - the kernel already locks during open(),
1295          * so locking ourselves only causes deadlocks */
1296         /*mutex_lock(&zr->resource_lock);*/
1297
1298         if (!zr->decoder) {
1299                 dprintk(1,
1300                         KERN_ERR "%s: no TV decoder loaded for device!\n",
1301                         ZR_DEVNAME(zr));
1302                 res = -EIO;
1303                 goto open_unlock_and_return;
1304         }
1305
1306         /* try to grab a module lock */
1307         if (!try_module_get(THIS_MODULE)) {
1308                 dprintk(1,
1309                         KERN_ERR
1310                         "%s: failed to acquire my own lock! PANIC!\n",
1311                         ZR_DEVNAME(zr));
1312                 res = -ENODEV;
1313                 goto open_unlock_and_return;
1314         }
1315         if (!try_module_get(zr->decoder->driver->driver.owner)) {
1316                 dprintk(1,
1317                         KERN_ERR
1318                         "%s: failed to grab ownership of i2c decoder\n",
1319                         ZR_DEVNAME(zr));
1320                 res = -EIO;
1321                 module_put(THIS_MODULE);
1322                 goto open_unlock_and_return;
1323         }
1324         if (zr->encoder &&
1325             !try_module_get(zr->encoder->driver->driver.owner)) {
1326                 dprintk(1,
1327                         KERN_ERR
1328                         "%s: failed to grab ownership of i2c encoder\n",
1329                         ZR_DEVNAME(zr));
1330                 res = -EIO;
1331                 module_put(zr->decoder->driver->driver.owner);
1332                 module_put(THIS_MODULE);
1333                 goto open_unlock_and_return;
1334         }
1335
1336         have_module_locks = 1;
1337
1338         if (zr->user >= 2048) {
1339                 dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
1340                         ZR_DEVNAME(zr), zr->user);
1341                 res = -EBUSY;
1342                 goto open_unlock_and_return;
1343         }
1344
1345         dprintk(1, KERN_INFO "%s: zoran_open(%s, pid=[%d]), users(-)=%d\n",
1346                 ZR_DEVNAME(zr), current->comm, current->pid, zr->user);
1347
1348         /* now, create the open()-specific file_ops struct */
1349         fh = kzalloc(sizeof(struct zoran_fh), GFP_KERNEL);
1350         if (!fh) {
1351                 dprintk(1,
1352                         KERN_ERR
1353                         "%s: zoran_open() - allocation of zoran_fh failed\n",
1354                         ZR_DEVNAME(zr));
1355                 res = -ENOMEM;
1356                 goto open_unlock_and_return;
1357         }
1358         /* used to be BUZ_MAX_WIDTH/HEIGHT, but that gives overflows
1359          * on norm-change! */
1360         fh->overlay_mask =
1361             kmalloc(((768 + 31) / 32) * 576 * 4, GFP_KERNEL);
1362         if (!fh->overlay_mask) {
1363                 dprintk(1,
1364                         KERN_ERR
1365                         "%s: zoran_open() - allocation of overlay_mask failed\n",
1366                         ZR_DEVNAME(zr));
1367                 kfree(fh);
1368                 res = -ENOMEM;
1369                 goto open_unlock_and_return;
1370         }
1371
1372         if (zr->user++ == 0)
1373                 first_open = 1;
1374
1375         /*mutex_unlock(&zr->resource_lock);*/
1376
1377         /* default setup - TODO: look at flags */
1378         if (first_open) {       /* First device open */
1379                 zr36057_restart(zr);
1380                 zoran_open_init_params(zr);
1381                 zoran_init_hardware(zr);
1382
1383                 btor(ZR36057_ICR_IntPinEn, ZR36057_ICR);
1384         }
1385
1386         /* set file_ops stuff */
1387         file->private_data = fh;
1388         fh->zr = zr;
1389         zoran_open_init_session(file);
1390
1391         return 0;
1392
1393 open_unlock_and_return:
1394         /* if we grabbed locks, release them accordingly */
1395         if (have_module_locks) {
1396                 module_put(zr->decoder->driver->driver.owner);
1397                 if (zr->encoder) {
1398                         module_put(zr->encoder->driver->driver.owner);
1399                 }
1400                 module_put(THIS_MODULE);
1401         }
1402
1403         /* if there's no device found, we didn't obtain the lock either */
1404         if (zr) {
1405                 /*mutex_unlock(&zr->resource_lock);*/
1406         }
1407
1408         return res;
1409 }
1410
1411 static int
1412 zoran_close (struct inode *inode,
1413              struct file  *file)
1414 {
1415         struct zoran_fh *fh = file->private_data;
1416         struct zoran *zr = fh->zr;
1417
1418         dprintk(1, KERN_INFO "%s: zoran_close(%s, pid=[%d]), users(+)=%d\n",
1419                 ZR_DEVNAME(zr), current->comm, current->pid, zr->user);
1420
1421         /* kernel locks (fs/device.c), so don't do that ourselves
1422          * (prevents deadlocks) */
1423         /*mutex_lock(&zr->resource_lock);*/
1424
1425         zoran_close_end_session(file);
1426
1427         if (zr->user-- == 1) {  /* Last process */
1428                 /* Clean up JPEG process */
1429                 wake_up_interruptible(&zr->jpg_capq);
1430                 zr36057_enable_jpg(zr, BUZ_MODE_IDLE);
1431                 zr->jpg_buffers.allocated = 0;
1432                 zr->jpg_buffers.active = ZORAN_FREE;
1433
1434                 /* disable interrupts */
1435                 btand(~ZR36057_ICR_IntPinEn, ZR36057_ICR);
1436
1437                 if (*zr_debug > 1)
1438                         print_interrupts(zr);
1439
1440                 /* Overlay off */
1441                 zr->v4l_overlay_active = 0;
1442                 zr36057_overlay(zr, 0);
1443                 zr->overlay_mask = NULL;
1444
1445                 /* capture off */
1446                 wake_up_interruptible(&zr->v4l_capq);
1447                 zr36057_set_memgrab(zr, 0);
1448                 zr->v4l_buffers.allocated = 0;
1449                 zr->v4l_buffers.active = ZORAN_FREE;
1450                 zoran_set_pci_master(zr, 0);
1451
1452                 if (!pass_through) {    /* Switch to color bar */
1453                         int zero = 0, two = 2;
1454                         decoder_command(zr, DECODER_ENABLE_OUTPUT, &zero);
1455                         encoder_command(zr, ENCODER_SET_INPUT, &two);
1456                 }
1457         }
1458
1459         file->private_data = NULL;
1460         kfree(fh->overlay_mask);
1461         kfree(fh);
1462
1463         /* release locks on the i2c modules */
1464         module_put(zr->decoder->driver->driver.owner);
1465         if (zr->encoder) {
1466                  module_put(zr->encoder->driver->driver.owner);
1467         }
1468         module_put(THIS_MODULE);
1469
1470         /*mutex_unlock(&zr->resource_lock);*/
1471
1472         dprintk(4, KERN_INFO "%s: zoran_close() done\n", ZR_DEVNAME(zr));
1473
1474         return 0;
1475 }
1476
1477
1478 static ssize_t
1479 zoran_read (struct file *file,
1480             char        __user *data,
1481             size_t       count,
1482             loff_t      *ppos)
1483 {
1484         /* we simply don't support read() (yet)... */
1485
1486         return -EINVAL;
1487 }
1488
1489 static ssize_t
1490 zoran_write (struct file *file,
1491              const char  __user *data,
1492              size_t       count,
1493              loff_t      *ppos)
1494 {
1495         /* ...and the same goes for write() */
1496
1497         return -EINVAL;
1498 }
1499
1500 static int
1501 setup_fbuffer (struct file               *file,
1502                void                      *base,
1503                const struct zoran_format *fmt,
1504                int                        width,
1505                int                        height,
1506                int                        bytesperline)
1507 {
1508         struct zoran_fh *fh = file->private_data;
1509         struct zoran *zr = fh->zr;
1510
1511         /* (Ronald) v4l/v4l2 guidelines */
1512         if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
1513                 return -EPERM;
1514
1515         /* Don't allow frame buffer overlay if PCI or AGP is buggy, or on
1516            ALi Magik (that needs very low latency while the card needs a
1517            higher value always) */
1518
1519         if (pci_pci_problems & (PCIPCI_FAIL | PCIAGP_FAIL | PCIPCI_ALIMAGIK))
1520                 return -ENXIO;
1521
1522         /* we need a bytesperline value, even if not given */
1523         if (!bytesperline)
1524                 bytesperline = width * ((fmt->depth + 7) & ~7) / 8;
1525
1526 #if 0
1527         if (zr->overlay_active) {
1528                 /* dzjee... stupid users... don't even bother to turn off
1529                  * overlay before changing the memory location...
1530                  * normally, we would return errors here. However, one of
1531                  * the tools that does this is... xawtv! and since xawtv
1532                  * is used by +/- 99% of the users, we'd rather be user-
1533                  * friendly and silently do as if nothing went wrong */
1534                 dprintk(3,
1535                         KERN_ERR
1536                         "%s: setup_fbuffer() - forced overlay turnoff because framebuffer changed\n",
1537                         ZR_DEVNAME(zr));
1538                 zr36057_overlay(zr, 0);
1539         }
1540 #endif
1541
1542         if (!(fmt->flags & ZORAN_FORMAT_OVERLAY)) {
1543                 dprintk(1,
1544                         KERN_ERR
1545                         "%s: setup_fbuffer() - no valid overlay format given\n",
1546                         ZR_DEVNAME(zr));
1547                 return -EINVAL;
1548         }
1549         if (height <= 0 || width <= 0 || bytesperline <= 0) {
1550                 dprintk(1,
1551                         KERN_ERR
1552                         "%s: setup_fbuffer() - invalid height/width/bpl value (%d|%d|%d)\n",
1553                         ZR_DEVNAME(zr), width, height, bytesperline);
1554                 return -EINVAL;
1555         }
1556         if (bytesperline & 3) {
1557                 dprintk(1,
1558                         KERN_ERR
1559                         "%s: setup_fbuffer() - bytesperline (%d) must be 4-byte aligned\n",
1560                         ZR_DEVNAME(zr), bytesperline);
1561                 return -EINVAL;
1562         }
1563
1564         zr->buffer.base = (void *) ((unsigned long) base & ~3);
1565         zr->buffer.height = height;
1566         zr->buffer.width = width;
1567         zr->buffer.depth = fmt->depth;
1568         zr->overlay_settings.format = fmt;
1569         zr->buffer.bytesperline = bytesperline;
1570
1571         /* The user should set new window parameters */
1572         zr->overlay_settings.is_set = 0;
1573
1574         return 0;
1575 }
1576
1577
1578 static int
1579 setup_window (struct file       *file,
1580               int                x,
1581               int                y,
1582               int                width,
1583               int                height,
1584               struct video_clip __user *clips,
1585               int                clipcount,
1586               void              __user *bitmap)
1587 {
1588         struct zoran_fh *fh = file->private_data;
1589         struct zoran *zr = fh->zr;
1590         struct video_clip *vcp = NULL;
1591         int on, end;
1592
1593
1594         if (!zr->buffer.base) {
1595                 dprintk(1,
1596                         KERN_ERR
1597                         "%s: setup_window() - frame buffer has to be set first\n",
1598                         ZR_DEVNAME(zr));
1599                 return -EINVAL;
1600         }
1601
1602         if (!fh->overlay_settings.format) {
1603                 dprintk(1,
1604                         KERN_ERR
1605                         "%s: setup_window() - no overlay format set\n",
1606                         ZR_DEVNAME(zr));
1607                 return -EINVAL;
1608         }
1609
1610         /*
1611          * The video front end needs 4-byte alinged line sizes, we correct that
1612          * silently here if necessary
1613          */
1614         if (zr->buffer.depth == 15 || zr->buffer.depth == 16) {
1615                 end = (x + width) & ~1; /* round down */
1616                 x = (x + 1) & ~1;       /* round up */
1617                 width = end - x;
1618         }
1619
1620         if (zr->buffer.depth == 24) {
1621                 end = (x + width) & ~3; /* round down */
1622                 x = (x + 3) & ~3;       /* round up */
1623                 width = end - x;
1624         }
1625
1626         if (width > BUZ_MAX_WIDTH)
1627                 width = BUZ_MAX_WIDTH;
1628         if (height > BUZ_MAX_HEIGHT)
1629                 height = BUZ_MAX_HEIGHT;
1630
1631         /* Check for vaild parameters */
1632         if (width < BUZ_MIN_WIDTH || height < BUZ_MIN_HEIGHT ||
1633             width > BUZ_MAX_WIDTH || height > BUZ_MAX_HEIGHT) {
1634                 dprintk(1,
1635                         KERN_ERR
1636                         "%s: setup_window() - width = %d or height = %d invalid\n",
1637                         ZR_DEVNAME(zr), width, height);
1638                 return -EINVAL;
1639         }
1640
1641         fh->overlay_settings.x = x;
1642         fh->overlay_settings.y = y;
1643         fh->overlay_settings.width = width;
1644         fh->overlay_settings.height = height;
1645         fh->overlay_settings.clipcount = clipcount;
1646
1647         /*
1648          * If an overlay is running, we have to switch it off
1649          * and switch it on again in order to get the new settings in effect.
1650          *
1651          * We also want to avoid that the overlay mask is written
1652          * when an overlay is running.
1653          */
1654
1655         on = zr->v4l_overlay_active && !zr->v4l_memgrab_active &&
1656             zr->overlay_active != ZORAN_FREE &&
1657             fh->overlay_active != ZORAN_FREE;
1658         if (on)
1659                 zr36057_overlay(zr, 0);
1660
1661         /*
1662          *   Write the overlay mask if clips are wanted.
1663          *   We prefer a bitmap.
1664          */
1665         if (bitmap) {
1666                 /* fake value - it just means we want clips */
1667                 fh->overlay_settings.clipcount = 1;
1668
1669                 if (copy_from_user(fh->overlay_mask, bitmap,
1670                                    (width * height + 7) / 8)) {
1671                         return -EFAULT;
1672                 }
1673         } else if (clipcount > 0) {
1674                 /* write our own bitmap from the clips */
1675                 vcp = vmalloc(sizeof(struct video_clip) * (clipcount + 4));
1676                 if (vcp == NULL) {
1677                         dprintk(1,
1678                                 KERN_ERR
1679                                 "%s: setup_window() - Alloc of clip mask failed\n",
1680                                 ZR_DEVNAME(zr));
1681                         return -ENOMEM;
1682                 }
1683                 if (copy_from_user
1684                     (vcp, clips, sizeof(struct video_clip) * clipcount)) {
1685                         vfree(vcp);
1686                         return -EFAULT;
1687                 }
1688                 write_overlay_mask(file, vcp, clipcount);
1689                 vfree(vcp);
1690         }
1691
1692         fh->overlay_settings.is_set = 1;
1693         if (fh->overlay_active != ZORAN_FREE &&
1694             zr->overlay_active != ZORAN_FREE)
1695                 zr->overlay_settings = fh->overlay_settings;
1696
1697         if (on)
1698                 zr36057_overlay(zr, 1);
1699
1700         /* Make sure the changes come into effect */
1701         return wait_grab_pending(zr);
1702 }
1703
1704 static int
1705 setup_overlay (struct file *file,
1706                int          on)
1707 {
1708         struct zoran_fh *fh = file->private_data;
1709         struct zoran *zr = fh->zr;
1710
1711         /* If there is nothing to do, return immediatly */
1712         if ((on && fh->overlay_active != ZORAN_FREE) ||
1713             (!on && fh->overlay_active == ZORAN_FREE))
1714                 return 0;
1715
1716         /* check whether we're touching someone else's overlay */
1717         if (on && zr->overlay_active != ZORAN_FREE &&
1718             fh->overlay_active == ZORAN_FREE) {
1719                 dprintk(1,
1720                         KERN_ERR
1721                         "%s: setup_overlay() - overlay is already active for another session\n",
1722                         ZR_DEVNAME(zr));
1723                 return -EBUSY;
1724         }
1725         if (!on && zr->overlay_active != ZORAN_FREE &&
1726             fh->overlay_active == ZORAN_FREE) {
1727                 dprintk(1,
1728                         KERN_ERR
1729                         "%s: setup_overlay() - you cannot cancel someone else's session\n",
1730                         ZR_DEVNAME(zr));
1731                 return -EPERM;
1732         }
1733
1734         if (on == 0) {
1735                 zr->overlay_active = fh->overlay_active = ZORAN_FREE;
1736                 zr->v4l_overlay_active = 0;
1737                 /* When a grab is running, the video simply
1738                  * won't be switched on any more */
1739                 if (!zr->v4l_memgrab_active)
1740                         zr36057_overlay(zr, 0);
1741                 zr->overlay_mask = NULL;
1742         } else {
1743                 if (!zr->buffer.base || !fh->overlay_settings.is_set) {
1744                         dprintk(1,
1745                                 KERN_ERR
1746                                 "%s: setup_overlay() - buffer or window not set\n",
1747                                 ZR_DEVNAME(zr));
1748                         return -EINVAL;
1749                 }
1750                 if (!fh->overlay_settings.format) {
1751                         dprintk(1,
1752                                 KERN_ERR
1753                                 "%s: setup_overlay() - no overlay format set\n",
1754                                 ZR_DEVNAME(zr));
1755                         return -EINVAL;
1756                 }
1757                 zr->overlay_active = fh->overlay_active = ZORAN_LOCKED;
1758                 zr->v4l_overlay_active = 1;
1759                 zr->overlay_mask = fh->overlay_mask;
1760                 zr->overlay_settings = fh->overlay_settings;
1761                 if (!zr->v4l_memgrab_active)
1762                         zr36057_overlay(zr, 1);
1763                 /* When a grab is running, the video will be
1764                  * switched on when grab is finished */
1765         }
1766
1767         /* Make sure the changes come into effect */
1768         return wait_grab_pending(zr);
1769 }
1770
1771 #ifdef CONFIG_VIDEO_V4L2
1772         /* get the status of a buffer in the clients buffer queue */
1773 static int
1774 zoran_v4l2_buffer_status (struct file        *file,
1775                           struct v4l2_buffer *buf,
1776                           int                 num)
1777 {
1778         struct zoran_fh *fh = file->private_data;
1779         struct zoran *zr = fh->zr;
1780
1781         buf->flags = V4L2_BUF_FLAG_MAPPED;
1782
1783         switch (fh->map_mode) {
1784         case ZORAN_MAP_MODE_RAW:
1785
1786                 /* check range */
1787                 if (num < 0 || num >= fh->v4l_buffers.num_buffers ||
1788                     !fh->v4l_buffers.allocated) {
1789                         dprintk(1,
1790                                 KERN_ERR
1791                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1792                                 ZR_DEVNAME(zr));
1793                         return -EINVAL;
1794                 }
1795
1796                 buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1797                 buf->length = fh->v4l_buffers.buffer_size;
1798
1799                 /* get buffer */
1800                 buf->bytesused = fh->v4l_buffers.buffer[num].bs.length;
1801                 if (fh->v4l_buffers.buffer[num].state == BUZ_STATE_DONE ||
1802                     fh->v4l_buffers.buffer[num].state == BUZ_STATE_USER) {
1803                         buf->sequence = fh->v4l_buffers.buffer[num].bs.seq;
1804                         buf->flags |= V4L2_BUF_FLAG_DONE;
1805                         buf->timestamp =
1806                             fh->v4l_buffers.buffer[num].bs.timestamp;
1807                 } else {
1808                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1809                 }
1810
1811                 if (fh->v4l_settings.height <= BUZ_MAX_HEIGHT / 2)
1812                         buf->field = V4L2_FIELD_TOP;
1813                 else
1814                         buf->field = V4L2_FIELD_INTERLACED;
1815
1816                 break;
1817
1818         case ZORAN_MAP_MODE_JPG_REC:
1819         case ZORAN_MAP_MODE_JPG_PLAY:
1820
1821                 /* check range */
1822                 if (num < 0 || num >= fh->jpg_buffers.num_buffers ||
1823                     !fh->jpg_buffers.allocated) {
1824                         dprintk(1,
1825                                 KERN_ERR
1826                                 "%s: v4l2_buffer_status() - wrong number or buffers not allocated\n",
1827                                 ZR_DEVNAME(zr));
1828                         return -EINVAL;
1829                 }
1830
1831                 buf->type = (fh->map_mode == ZORAN_MAP_MODE_JPG_REC) ?
1832                               V4L2_BUF_TYPE_VIDEO_CAPTURE :
1833                               V4L2_BUF_TYPE_VIDEO_OUTPUT;
1834                 buf->length = fh->jpg_buffers.buffer_size;
1835
1836                 /* these variables are only written after frame has been captured */
1837                 if (fh->jpg_buffers.buffer[num].state == BUZ_STATE_DONE ||
1838                     fh->jpg_buffers.buffer[num].state == BUZ_STATE_USER) {
1839                         buf->sequence = fh->jpg_buffers.buffer[num].bs.seq;
1840                         buf->timestamp =
1841                             fh->jpg_buffers.buffer[num].bs.timestamp;
1842                         buf->bytesused =
1843                             fh->jpg_buffers.buffer[num].bs.length;
1844                         buf->flags |= V4L2_BUF_FLAG_DONE;
1845                 } else {
1846                         buf->flags |= V4L2_BUF_FLAG_QUEUED;
1847                 }
1848
1849                 /* which fields are these? */
1850                 if (fh->jpg_settings.TmpDcm != 1)
1851                         buf->field =
1852                             fh->jpg_settings.
1853                             odd_even ? V4L2_FIELD_TOP : V4L2_FIELD_BOTTOM;
1854                 else
1855                         buf->field =
1856                             fh->jpg_settings.
1857                             odd_even ? V4L2_FIELD_SEQ_TB :
1858                             V4L2_FIELD_SEQ_BT;
1859
1860                 break;
1861
1862         default:
1863
1864                 dprintk(5,
1865                         KERN_ERR
1866                         "%s: v4l2_buffer_status() - invalid buffer type|map_mode (%d|%d)\n",
1867                         ZR_DEVNAME(zr), buf->type, fh->map_mode);
1868                 return -EINVAL;
1869         }
1870
1871         buf->memory = V4L2_MEMORY_MMAP;
1872         buf->index = num;
1873         buf->m.offset = buf->length * num;
1874
1875         return 0;
1876 }
1877 #endif
1878
1879 static int
1880 zoran_set_norm (struct zoran *zr,
1881                 int           norm) /* VIDEO_MODE_* */
1882 {
1883         int norm_encoder, on;
1884
1885         if (zr->v4l_buffers.active != ZORAN_FREE ||
1886             zr->jpg_buffers.active != ZORAN_FREE) {
1887                 dprintk(1,
1888                         KERN_WARNING
1889                         "%s: set_norm() called while in playback/capture mode\n",
1890                         ZR_DEVNAME(zr));
1891                 return -EBUSY;
1892         }
1893
1894         if (lock_norm && norm != zr->norm) {
1895                 if (lock_norm > 1) {
1896                         dprintk(1,
1897                                 KERN_WARNING
1898                                 "%s: set_norm() - TV standard is locked, can not switch norm\n",
1899                                 ZR_DEVNAME(zr));
1900                         return -EPERM;
1901                 } else {
1902                         dprintk(1,
1903                                 KERN_WARNING
1904                                 "%s: set_norm() - TV standard is locked, norm was not changed\n",
1905                                 ZR_DEVNAME(zr));
1906                         norm = zr->norm;
1907                 }
1908         }
1909
1910         if (norm != VIDEO_MODE_AUTO &&
1911             (norm < 0 || norm >= zr->card.norms ||
1912              !zr->card.tvn[norm])) {
1913                 dprintk(1,
1914                         KERN_ERR "%s: set_norm() - unsupported norm %d\n",
1915                         ZR_DEVNAME(zr), norm);
1916                 return -EINVAL;
1917         }
1918
1919         if (norm == VIDEO_MODE_AUTO) {
1920                 int status;
1921
1922                 /* if we have autodetect, ... */
1923                 struct video_decoder_capability caps;
1924                 decoder_command(zr, DECODER_GET_CAPABILITIES, &caps);
1925                 if (!(caps.flags & VIDEO_DECODER_AUTO)) {
1926                         dprintk(1, KERN_ERR "%s: norm=auto unsupported\n",
1927                                 ZR_DEVNAME(zr));
1928                         return -EINVAL;
1929                 }
1930
1931                 decoder_command(zr, DECODER_SET_NORM, &norm);
1932
1933                 /* let changes come into effect */
1934                 ssleep(2);
1935
1936                 decoder_command(zr, DECODER_GET_STATUS, &status);
1937                 if (!(status & DECODER_STATUS_GOOD)) {
1938                         dprintk(1,
1939                                 KERN_ERR
1940                                 "%s: set_norm() - no norm detected\n",
1941                                 ZR_DEVNAME(zr));
1942                         /* reset norm */
1943                         decoder_command(zr, DECODER_SET_NORM, &zr->norm);
1944                         return -EIO;
1945                 }
1946
1947                 if (status & DECODER_STATUS_NTSC)
1948                         norm = VIDEO_MODE_NTSC;
1949                 else if (status & DECODER_STATUS_SECAM)
1950                         norm = VIDEO_MODE_SECAM;
1951                 else
1952                         norm = VIDEO_MODE_PAL;
1953         }
1954         zr->timing = zr->card.tvn[norm];
1955         norm_encoder = norm;
1956
1957         /* We switch overlay off and on since a change in the
1958          * norm needs different VFE settings */
1959         on = zr->overlay_active && !zr->v4l_memgrab_active;
1960         if (on)
1961                 zr36057_overlay(zr, 0);
1962
1963         decoder_command(zr, DECODER_SET_NORM, &norm);
1964         encoder_command(zr, ENCODER_SET_NORM, &norm_encoder);
1965
1966         if (on)
1967                 zr36057_overlay(zr, 1);
1968
1969         /* Make sure the changes come into effect */
1970         zr->norm = norm;
1971
1972         return 0;
1973 }
1974
1975 static int
1976 zoran_set_input (struct zoran *zr,
1977                  int           input)
1978 {
1979         int realinput;
1980
1981         if (input == zr->input) {
1982                 return 0;
1983         }
1984
1985         if (zr->v4l_buffers.active != ZORAN_FREE ||
1986             zr->jpg_buffers.active != ZORAN_FREE) {
1987                 dprintk(1,
1988                         KERN_WARNING
1989                         "%s: set_input() called while in playback/capture mode\n",
1990                         ZR_DEVNAME(zr));
1991                 return -EBUSY;
1992         }
1993
1994         if (input < 0 || input >= zr->card.inputs) {
1995                 dprintk(1,
1996                         KERN_ERR
1997                         "%s: set_input() - unnsupported input %d\n",
1998                         ZR_DEVNAME(zr), input);
1999                 return -EINVAL;
2000         }
2001
2002         realinput = zr->card.input[input].muxsel;
2003         zr->input = input;
2004
2005         decoder_command(zr, DECODER_SET_INPUT, &realinput);
2006
2007         return 0;
2008 }
2009
2010 /*
2011  *   ioctl routine
2012  */
2013
2014 static int
2015 zoran_do_ioctl (struct inode *inode,
2016                 struct file  *file,
2017                 unsigned int  cmd,
2018                 void         *arg)
2019 {
2020         struct zoran_fh *fh = file->private_data;
2021         struct zoran *zr = fh->zr;
2022         /* CAREFUL: used in multiple places here */
2023         struct zoran_jpg_settings settings;
2024
2025         /* we might have older buffers lying around... We don't want
2026          * to wait, but we do want to try cleaning them up ASAP. So
2027          * we try to obtain the lock and free them. If that fails, we
2028          * don't do anything and wait for the next turn. In the end,
2029          * zoran_close() or a new allocation will still free them...
2030          * This is just a 'the sooner the better' extra 'feature'
2031          *
2032          * We don't free the buffers right on munmap() because that
2033          * causes oopses (kfree() inside munmap() oopses for no
2034          * apparent reason - it's also not reproduceable in any way,
2035          * but moving the free code outside the munmap() handler fixes
2036          * all this... If someone knows why, please explain me (Ronald)
2037          */
2038         if (!!mutex_trylock(&zr->resource_lock)) {
2039                 /* we obtained it! Let's try to free some things */
2040                 if (fh->jpg_buffers.ready_to_be_freed)
2041                         jpg_fbuffer_free(file);
2042                 if (fh->v4l_buffers.ready_to_be_freed)
2043                         v4l_fbuffer_free(file);
2044
2045                 mutex_unlock(&zr->resource_lock);
2046         }
2047
2048         switch (cmd) {
2049
2050         case VIDIOCGCAP:
2051         {
2052                 struct video_capability *vcap = arg;
2053
2054                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCAP\n", ZR_DEVNAME(zr));
2055
2056                 memset(vcap, 0, sizeof(struct video_capability));
2057                 strncpy(vcap->name, ZR_DEVNAME(zr), sizeof(vcap->name)-1);
2058                 vcap->type = ZORAN_VID_TYPE;
2059
2060                 vcap->channels = zr->card.inputs;
2061                 vcap->audios = 0;
2062                 mutex_lock(&zr->resource_lock);
2063                 vcap->maxwidth = BUZ_MAX_WIDTH;
2064                 vcap->maxheight = BUZ_MAX_HEIGHT;
2065                 vcap->minwidth = BUZ_MIN_WIDTH;
2066                 vcap->minheight = BUZ_MIN_HEIGHT;
2067                 mutex_unlock(&zr->resource_lock);
2068
2069                 return 0;
2070         }
2071                 break;
2072
2073         case VIDIOCGCHAN:
2074         {
2075                 struct video_channel *vchan = arg;
2076                 int channel = vchan->channel;
2077
2078                 dprintk(3, KERN_DEBUG "%s: VIDIOCGCHAN - channel=%d\n",
2079                         ZR_DEVNAME(zr), vchan->channel);
2080
2081                 memset(vchan, 0, sizeof(struct video_channel));
2082                 if (channel > zr->card.inputs || channel < 0) {
2083                         dprintk(1,
2084                                 KERN_ERR
2085                                 "%s: VIDIOCGCHAN on not existing channel %d\n",
2086                                 ZR_DEVNAME(zr), channel);
2087                         return -EINVAL;
2088                 }
2089
2090                 strcpy(vchan->name, zr->card.input[channel].name);
2091
2092                 vchan->tuners = 0;
2093                 vchan->flags = 0;
2094                 vchan->type = VIDEO_TYPE_CAMERA;
2095                 mutex_lock(&zr->resource_lock);
2096                 vchan->norm = zr->norm;
2097                 mutex_unlock(&zr->resource_lock);
2098                 vchan->channel = channel;
2099
2100                 return 0;
2101         }
2102                 break;
2103
2104                 /* RJ: the documentation at http://roadrunner.swansea.linux.org.uk/v4lapi.shtml says:
2105                  *
2106                  * * "The VIDIOCSCHAN ioctl takes an integer argument and switches the capture to this input."
2107                  * *                                 ^^^^^^^
2108                  * * The famos BTTV driver has it implemented with a struct video_channel argument
2109                  * * and we follow it for compatibility reasons
2110                  * *
2111                  * * BTW: this is the only way the user can set the norm!
2112                  */
2113
2114         case VIDIOCSCHAN:
2115         {
2116                 struct video_channel *vchan = arg;
2117                 int res;
2118
2119                 dprintk(3,
2120                         KERN_DEBUG
2121                         "%s: VIDIOCSCHAN - channel=%d, norm=%d\n",
2122                         ZR_DEVNAME(zr), vchan->channel, vchan->norm);
2123
2124                 mutex_lock(&zr->resource_lock);
2125                 if ((res = zoran_set_input(zr, vchan->channel)))
2126                         goto schan_unlock_and_return;
2127                 if ((res = zoran_set_norm(zr, vchan->norm)))
2128                         goto schan_unlock_and_return;
2129
2130                 /* Make sure the changes come into effect */
2131                 res = wait_grab_pending(zr);
2132         schan_unlock_and_return:
2133                 mutex_unlock(&zr->resource_lock);
2134                 return res;
2135         }
2136                 break;
2137
2138         case VIDIOCGPICT:
2139         {
2140                 struct video_picture *vpict = arg;
2141
2142                 dprintk(3, KERN_DEBUG "%s: VIDIOCGPICT\n", ZR_DEVNAME(zr));
2143
2144                 memset(vpict, 0, sizeof(struct video_picture));
2145                 mutex_lock(&zr->resource_lock);
2146                 vpict->hue = zr->hue;
2147                 vpict->brightness = zr->brightness;
2148                 vpict->contrast = zr->contrast;
2149                 vpict->colour = zr->saturation;
2150                 if (fh->overlay_settings.format) {
2151                         vpict->depth = fh->overlay_settings.format->depth;
2152                         vpict->palette = fh->overlay_settings.format->palette;
2153                 } else {
2154                         vpict->depth = 0;
2155                 }
2156                 mutex_unlock(&zr->resource_lock);
2157
2158                 return 0;
2159         }
2160                 break;
2161
2162         case VIDIOCSPICT:
2163         {
2164                 struct video_picture *vpict = arg;
2165                 int i;
2166
2167                 dprintk(3,
2168                         KERN_DEBUG
2169                         "%s: VIDIOCSPICT - bri=%d, hue=%d, col=%d, con=%d, dep=%d, pal=%d\n",
2170                         ZR_DEVNAME(zr), vpict->brightness, vpict->hue,
2171                         vpict->colour, vpict->contrast, vpict->depth,
2172                         vpict->palette);
2173
2174                 for (i = 0; i < zoran_num_formats; i++) {
2175                         const struct zoran_format *fmt = &zoran_formats[i];
2176
2177                         if (fmt->palette != -1 &&
2178                             fmt->flags & ZORAN_FORMAT_OVERLAY &&
2179                             fmt->palette == vpict->palette &&
2180                             fmt->depth == vpict->depth)
2181                                 break;
2182                 }
2183                 if (i == zoran_num_formats) {
2184                         dprintk(1,
2185                                 KERN_ERR
2186                                 "%s: VIDIOCSPICT - Invalid palette %d\n",
2187                                 ZR_DEVNAME(zr), vpict->palette);
2188                         return -EINVAL;
2189                 }
2190
2191                 mutex_lock(&zr->resource_lock);
2192
2193                 decoder_command(zr, DECODER_SET_PICTURE, vpict);
2194
2195                 zr->hue = vpict->hue;
2196                 zr->contrast = vpict->contrast;
2197                 zr->saturation = vpict->colour;
2198                 zr->brightness = vpict->brightness;
2199
2200                 fh->overlay_settings.format = &zoran_formats[i];
2201
2202                 mutex_unlock(&zr->resource_lock);
2203
2204                 return 0;
2205         }
2206                 break;
2207
2208         case VIDIOCCAPTURE:
2209         {
2210                 int *on = arg, res;
2211
2212                 dprintk(3, KERN_DEBUG "%s: VIDIOCCAPTURE - on=%d\n",
2213                         ZR_DEVNAME(zr), *on);
2214
2215                 mutex_lock(&zr->resource_lock);
2216                 res = setup_overlay(file, *on);
2217                 mutex_unlock(&zr->resource_lock);
2218
2219                 return res;
2220         }
2221                 break;
2222
2223         case VIDIOCGWIN:
2224         {
2225                 struct video_window *vwin = arg;
2226
2227                 dprintk(3, KERN_DEBUG "%s: VIDIOCGWIN\n", ZR_DEVNAME(zr));
2228
2229                 memset(vwin, 0, sizeof(struct video_window));
2230                 mutex_lock(&zr->resource_lock);
2231                 vwin->x = fh->overlay_settings.x;
2232                 vwin->y = fh->overlay_settings.y;
2233                 vwin->width = fh->overlay_settings.width;
2234                 vwin->height = fh->overlay_settings.height;
2235                 mutex_unlock(&zr->resource_lock);
2236                 vwin->clipcount = 0;
2237                 return 0;
2238         }
2239                 break;
2240
2241         case VIDIOCSWIN:
2242         {
2243                 struct video_window *vwin = arg;
2244                 int res;
2245
2246                 dprintk(3,
2247                         KERN_DEBUG
2248                         "%s: VIDIOCSWIN - x=%d, y=%d, w=%d, h=%d, clipcount=%d\n",
2249                         ZR_DEVNAME(zr), vwin->x, vwin->y, vwin->width,
2250                         vwin->height, vwin->clipcount);
2251
2252                 mutex_lock(&zr->resource_lock);
2253                 res =
2254                     setup_window(file, vwin->x, vwin->y, vwin->width,
2255                                  vwin->height, vwin->clips,
2256                                  vwin->clipcount, NULL);
2257                 mutex_unlock(&zr->resource_lock);
2258
2259                 return res;
2260         }
2261                 break;
2262
2263         case VIDIOCGFBUF:
2264         {
2265                 struct video_buffer *vbuf = arg;
2266
2267                 dprintk(3, KERN_DEBUG "%s: VIDIOCGFBUF\n", ZR_DEVNAME(zr));
2268
2269                 mutex_lock(&zr->resource_lock);
2270                 *vbuf = zr->buffer;
2271                 mutex_unlock(&zr->resource_lock);
2272                 return 0;
2273         }
2274                 break;
2275
2276         case VIDIOCSFBUF:
2277         {
2278                 struct video_buffer *vbuf = arg;
2279                 int i, res = 0;
2280
2281                 dprintk(3,
2282                         KERN_DEBUG
2283                         "%s: VIDIOCSFBUF - base=%p, w=%d, h=%d, depth=%d, bpl=%d\n",
2284                         ZR_DEVNAME(zr), vbuf->base, vbuf->width,
2285                         vbuf->height, vbuf->depth, vbuf->bytesperline);
2286
2287                 for (i = 0; i < zoran_num_formats; i++)
2288                         if (zoran_formats[i].depth == vbuf->depth)
2289                                 break;
2290                 if (i == zoran_num_formats) {
2291                         dprintk(1,
2292                                 KERN_ERR
2293                                 "%s: VIDIOCSFBUF - invalid fbuf depth %d\n",
2294                                 ZR_DEVNAME(zr), vbuf->depth);
2295                         return -EINVAL;
2296                 }
2297
2298                 mutex_lock(&zr->resource_lock);
2299                 res =
2300                     setup_fbuffer(file, vbuf->base, &zoran_formats[i],
2301                                   vbuf->width, vbuf->height,
2302                                   vbuf->bytesperline);
2303                 mutex_unlock(&zr->resource_lock);
2304
2305                 return res;
2306         }
2307                 break;
2308
2309         case VIDIOCSYNC:
2310         {
2311                 int *frame = arg, res;
2312
2313                 dprintk(3, KERN_DEBUG "%s: VIDIOCSYNC - frame=%d\n",
2314                         ZR_DEVNAME(zr), *frame);
2315
2316                 mutex_lock(&zr->resource_lock);
2317                 res = v4l_sync(file, *frame);
2318                 mutex_unlock(&zr->resource_lock);
2319                 if (!res)
2320                         zr->v4l_sync_tail++;
2321                 return res;
2322         }
2323                 break;
2324
2325         case VIDIOCMCAPTURE:
2326         {
2327                 struct video_mmap *vmap = arg;
2328                 int res;
2329
2330                 dprintk(3,
2331                         KERN_DEBUG
2332                         "%s: VIDIOCMCAPTURE - frame=%d, geom=%dx%d, fmt=%d\n",
2333                         ZR_DEVNAME(zr), vmap->frame, vmap->width, vmap->height,
2334                         vmap->format);
2335
2336                 mutex_lock(&zr->resource_lock);
2337                 res = v4l_grab(file, vmap);
2338                 mutex_unlock(&zr->resource_lock);
2339                 return res;
2340         }
2341                 break;
2342
2343         case VIDIOCGMBUF:
2344         {
2345                 struct video_mbuf *vmbuf = arg;
2346                 int i, res = 0;
2347
2348                 dprintk(3, KERN_DEBUG "%s: VIDIOCGMBUF\n", ZR_DEVNAME(zr));
2349
2350                 vmbuf->size =
2351                     fh->v4l_buffers.num_buffers *
2352                     fh->v4l_buffers.buffer_size;
2353                 vmbuf->frames = fh->v4l_buffers.num_buffers;
2354                 for (i = 0; i < vmbuf->frames; i++) {
2355                         vmbuf->offsets[i] =
2356                             i * fh->v4l_buffers.buffer_size;
2357                 }
2358
2359                 mutex_lock(&zr->resource_lock);
2360
2361                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2362                         dprintk(1,
2363                                 KERN_ERR
2364                                 "%s: VIDIOCGMBUF - buffers already allocated\n",
2365                                 ZR_DEVNAME(zr));
2366                         res = -EINVAL;
2367                         goto v4l1reqbuf_unlock_and_return;
2368                 }
2369
2370                 if (v4l_fbuffer_alloc(file)) {
2371                         res = -ENOMEM;
2372                         goto v4l1reqbuf_unlock_and_return;
2373                 }
2374
2375                 /* The next mmap will map the V4L buffers */
2376                 fh->map_mode = ZORAN_MAP_MODE_RAW;
2377         v4l1reqbuf_unlock_and_return:
2378                 mutex_unlock(&zr->resource_lock);
2379
2380                 return res;
2381         }
2382                 break;
2383
2384         case VIDIOCGUNIT:
2385         {
2386                 struct video_unit *vunit = arg;
2387
2388                 dprintk(3, KERN_DEBUG "%s: VIDIOCGUNIT\n", ZR_DEVNAME(zr));
2389
2390                 vunit->video = zr->video_dev->minor;
2391                 vunit->vbi = VIDEO_NO_UNIT;
2392                 vunit->radio = VIDEO_NO_UNIT;
2393                 vunit->audio = VIDEO_NO_UNIT;
2394                 vunit->teletext = VIDEO_NO_UNIT;
2395
2396                 return 0;
2397         }
2398                 break;
2399
2400                 /*
2401                  * RJ: In principal we could support subcaptures for V4L grabbing.
2402                  *     Not even the famous BTTV driver has them, however.
2403                  *     If there should be a strong demand, one could consider
2404                  *     to implement them.
2405                  */
2406         case VIDIOCGCAPTURE:
2407         {
2408                 dprintk(3, KERN_ERR "%s: VIDIOCGCAPTURE not supported\n",
2409                         ZR_DEVNAME(zr));
2410                 return -EINVAL;
2411         }
2412                 break;
2413
2414         case VIDIOCSCAPTURE:
2415         {
2416                 dprintk(3, KERN_ERR "%s: VIDIOCSCAPTURE not supported\n",
2417                         ZR_DEVNAME(zr));
2418                 return -EINVAL;
2419         }
2420                 break;
2421
2422         case BUZIOC_G_PARAMS:
2423         {
2424                 struct zoran_params *bparams = arg;
2425
2426                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_PARAMS\n", ZR_DEVNAME(zr));
2427
2428                 memset(bparams, 0, sizeof(struct zoran_params));
2429                 bparams->major_version = MAJOR_VERSION;
2430                 bparams->minor_version = MINOR_VERSION;
2431
2432                 mutex_lock(&zr->resource_lock);
2433
2434                 bparams->norm = zr->norm;
2435                 bparams->input = zr->input;
2436
2437                 bparams->decimation = fh->jpg_settings.decimation;
2438                 bparams->HorDcm = fh->jpg_settings.HorDcm;
2439                 bparams->VerDcm = fh->jpg_settings.VerDcm;
2440                 bparams->TmpDcm = fh->jpg_settings.TmpDcm;
2441                 bparams->field_per_buff = fh->jpg_settings.field_per_buff;
2442                 bparams->img_x = fh->jpg_settings.img_x;
2443                 bparams->img_y = fh->jpg_settings.img_y;
2444                 bparams->img_width = fh->jpg_settings.img_width;
2445                 bparams->img_height = fh->jpg_settings.img_height;
2446                 bparams->odd_even = fh->jpg_settings.odd_even;
2447
2448                 bparams->quality = fh->jpg_settings.jpg_comp.quality;
2449                 bparams->APPn = fh->jpg_settings.jpg_comp.APPn;
2450                 bparams->APP_len = fh->jpg_settings.jpg_comp.APP_len;
2451                 memcpy(bparams->APP_data,
2452                        fh->jpg_settings.jpg_comp.APP_data,
2453                        sizeof(bparams->APP_data));
2454                 bparams->COM_len = zr->jpg_settings.jpg_comp.COM_len;
2455                 memcpy(bparams->COM_data,
2456                        fh->jpg_settings.jpg_comp.COM_data,
2457                        sizeof(bparams->COM_data));
2458                 bparams->jpeg_markers =
2459                     fh->jpg_settings.jpg_comp.jpeg_markers;
2460
2461                 mutex_unlock(&zr->resource_lock);
2462
2463                 bparams->VFIFO_FB = 0;
2464
2465                 return 0;
2466         }
2467                 break;
2468
2469         case BUZIOC_S_PARAMS:
2470         {
2471                 struct zoran_params *bparams = arg;
2472                 int res = 0;
2473
2474                 dprintk(3, KERN_DEBUG "%s: BUZIOC_S_PARAMS\n", ZR_DEVNAME(zr));
2475
2476                 settings.decimation = bparams->decimation;
2477                 settings.HorDcm = bparams->HorDcm;
2478                 settings.VerDcm = bparams->VerDcm;
2479                 settings.TmpDcm = bparams->TmpDcm;
2480                 settings.field_per_buff = bparams->field_per_buff;
2481                 settings.img_x = bparams->img_x;
2482                 settings.img_y = bparams->img_y;
2483                 settings.img_width = bparams->img_width;
2484                 settings.img_height = bparams->img_height;
2485                 settings.odd_even = bparams->odd_even;
2486
2487                 settings.jpg_comp.quality = bparams->quality;
2488                 settings.jpg_comp.APPn = bparams->APPn;
2489                 settings.jpg_comp.APP_len = bparams->APP_len;
2490                 memcpy(settings.jpg_comp.APP_data, bparams->APP_data,
2491                        sizeof(bparams->APP_data));
2492                 settings.jpg_comp.COM_len = bparams->COM_len;
2493                 memcpy(settings.jpg_comp.COM_data, bparams->COM_data,
2494                        sizeof(bparams->COM_data));
2495                 settings.jpg_comp.jpeg_markers = bparams->jpeg_markers;
2496
2497                 mutex_lock(&zr->resource_lock);
2498
2499                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2500                         dprintk(1,
2501                                 KERN_ERR
2502                                 "%s: BUZIOC_S_PARAMS called, but Buz in capture/playback mode\n",
2503                                 ZR_DEVNAME(zr));
2504                         res = -EINVAL;
2505                         goto sparams_unlock_and_return;
2506                 }
2507
2508                 /* Check the params first before overwriting our
2509                  * nternal values */
2510                 if (zoran_check_jpg_settings(zr, &settings)) {
2511                         res = -EINVAL;
2512                         goto sparams_unlock_and_return;
2513                 }
2514
2515                 fh->jpg_settings = settings;
2516         sparams_unlock_and_return:
2517                 mutex_unlock(&zr->resource_lock);
2518
2519                 return res;
2520         }
2521                 break;
2522
2523         case BUZIOC_REQBUFS:
2524         {
2525                 struct zoran_requestbuffers *breq = arg;
2526                 int res = 0;
2527
2528                 dprintk(3,
2529                         KERN_DEBUG
2530                         "%s: BUZIOC_REQBUFS - count=%lu, size=%lu\n",
2531                         ZR_DEVNAME(zr), breq->count, breq->size);
2532
2533                 /* Enforce reasonable lower and upper limits */
2534                 if (breq->count < 4)
2535                         breq->count = 4;        /* Could be choosen smaller */
2536                 if (breq->count > jpg_nbufs)
2537                         breq->count = jpg_nbufs;
2538                 breq->size = PAGE_ALIGN(breq->size);
2539                 if (breq->size < 8192)
2540                         breq->size = 8192;      /* Arbitrary */
2541                 /* breq->size is limited by 1 page for the stat_com
2542                  * tables to a Maximum of 2 MB */
2543                 if (breq->size > jpg_bufsize)
2544                         breq->size = jpg_bufsize;
2545                 if (fh->jpg_buffers.need_contiguous &&
2546                     breq->size > MAX_KMALLOC_MEM)
2547                         breq->size = MAX_KMALLOC_MEM;
2548
2549                 mutex_lock(&zr->resource_lock);
2550
2551                 if (fh->jpg_buffers.allocated || fh->v4l_buffers.allocated) {
2552                         dprintk(1,
2553                                 KERN_ERR
2554                                 "%s: BUZIOC_REQBUFS - buffers allready allocated\n",
2555                                 ZR_DEVNAME(zr));
2556                         res = -EBUSY;
2557                         goto jpgreqbuf_unlock_and_return;
2558                 }
2559
2560                 fh->jpg_buffers.num_buffers = breq->count;
2561                 fh->jpg_buffers.buffer_size = breq->size;
2562
2563                 if (jpg_fbuffer_alloc(file)) {
2564                         res = -ENOMEM;
2565                         goto jpgreqbuf_unlock_and_return;
2566                 }
2567
2568                 /* The next mmap will map the MJPEG buffers - could
2569                  * also be *_PLAY, but it doesn't matter here */
2570                 fh->map_mode = ZORAN_MAP_MODE_JPG_REC;
2571         jpgreqbuf_unlock_and_return:
2572                 mutex_unlock(&zr->resource_lock);
2573
2574                 return res;
2575         }
2576                 break;
2577
2578         case BUZIOC_QBUF_CAPT:
2579         {
2580                 int *frame = arg, res;
2581
2582                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_CAPT - frame=%d\n",
2583                         ZR_DEVNAME(zr), *frame);
2584
2585                 mutex_lock(&zr->resource_lock);
2586                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_COMPRESS);
2587                 mutex_unlock(&zr->resource_lock);
2588
2589                 return res;
2590         }
2591                 break;
2592
2593         case BUZIOC_QBUF_PLAY:
2594         {
2595                 int *frame = arg, res;
2596
2597                 dprintk(3, KERN_DEBUG "%s: BUZIOC_QBUF_PLAY - frame=%d\n",
2598                         ZR_DEVNAME(zr), *frame);
2599
2600                 mutex_lock(&zr->resource_lock);
2601                 res = jpg_qbuf(file, *frame, BUZ_MODE_MOTION_DECOMPRESS);
2602                 mutex_unlock(&zr->resource_lock);
2603
2604                 return res;
2605         }
2606                 break;
2607
2608         case BUZIOC_SYNC:
2609         {
2610                 struct zoran_sync *bsync = arg;
2611                 int res;
2612
2613                 dprintk(3, KERN_DEBUG "%s: BUZIOC_SYNC\n", ZR_DEVNAME(zr));
2614
2615                 mutex_lock(&zr->resource_lock);
2616                 res = jpg_sync(file, bsync);
2617                 mutex_unlock(&zr->resource_lock);
2618
2619                 return res;
2620         }
2621                 break;
2622
2623         case BUZIOC_G_STATUS:
2624         {
2625                 struct zoran_status *bstat = arg;
2626                 int norm, input, status, res = 0;
2627
2628                 dprintk(3, KERN_DEBUG "%s: BUZIOC_G_STATUS\n", ZR_DEVNAME(zr));
2629
2630                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2631                         dprintk(1,
2632                                 KERN_ERR
2633                                 "%s: BUZIOC_G_STATUS called but Buz in capture/playback mode\n",
2634                                 ZR_DEVNAME(zr));
2635                         return -EINVAL;
2636                 }
2637
2638                 input = zr->card.input[bstat->input].muxsel;
2639                 norm = VIDEO_MODE_AUTO;
2640
2641                 mutex_lock(&zr->resource_lock);
2642
2643                 if (zr->codec_mode != BUZ_MODE_IDLE) {
2644                         dprintk(1,
2645                                 KERN_ERR
2646                                 "%s: BUZIOC_G_STATUS called, but Buz in capture/playback mode\n",
2647                                 ZR_DEVNAME(zr));
2648                         res = -EINVAL;
2649                         goto gstat_unlock_and_return;
2650                 }
2651
2652                 decoder_command(zr, DECODER_SET_INPUT, &input);
2653                 decoder_command(zr, DECODER_SET_NORM, &norm);
2654
2655                 /* sleep 1 second */
2656                 ssleep(1);
2657
2658                 /* Get status of video decoder */
2659                 decoder_command(zr, DECODER_GET_STATUS, &status);
2660
2661                 /* restore previous input and norm */
2662                 input = zr->card.input[zr->input].muxsel;
2663                 decoder_command(zr, DECODER_SET_INPUT, &input);
2664                 decoder_command(zr, DECODER_SET_NORM, &zr->norm);
2665         gstat_unlock_and_return:
2666                 mutex_unlock(&zr->resource_lock);
2667
2668                 if (!res) {
2669                         bstat->signal =
2670                             (status & DECODER_STATUS_GOOD) ? 1 : 0;
2671                         if (status & DECODER_STATUS_NTSC)
2672                                 bstat->norm = VIDEO_MODE_NTSC;
2673                         else if (status & DECODER_STATUS_SECAM)
2674                                 bstat->norm = VIDEO_MODE_SECAM;
2675                         else
2676                                 bstat->norm = VIDEO_MODE_PAL;
2677
2678                         bstat->color =
2679                             (status & DECODER_STATUS_COLOR) ? 1 : 0;
2680                 }
2681
2682                 return res;
2683         }
2684                 break;
2685
2686 #ifdef CONFIG_VIDEO_V4L2
2687
2688                 /* The new video4linux2 capture interface - much nicer than video4linux1, since
2689                  * it allows for integrating the JPEG capturing calls inside standard v4l2
2690                  */
2691
2692         case VIDIOC_QUERYCAP:
2693         {
2694                 struct v4l2_capability *cap = arg;
2695
2696                 dprintk(3, KERN_DEBUG "%s: VIDIOC_QUERYCAP\n", ZR_DEVNAME(zr));
2697
2698                 memset(cap, 0, sizeof(*cap));
2699                 strncpy(cap->card, ZR_DEVNAME(zr), sizeof(cap->card)-1);
2700                 strncpy(cap->driver, "zoran", sizeof(cap->driver)-1);
2701                 snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s",
2702                          pci_name(zr->pci_dev));
2703                 cap->version =
2704                     KERNEL_VERSION(MAJOR_VERSION, MINOR_VERSION,
2705                                    RELEASE_VERSION);
2706                 cap->capabilities = ZORAN_V4L2_VID_FLAGS;
2707
2708                 return 0;
2709         }
2710                 break;
2711
2712         case VIDIOC_ENUM_FMT:
2713         {
2714                 struct v4l2_fmtdesc *fmt = arg;
2715                 int index = fmt->index, num = -1, i, flag = 0, type =
2716                     fmt->type;
2717
2718                 dprintk(3, KERN_DEBUG "%s: VIDIOC_ENUM_FMT - index=%d\n",
2719                         ZR_DEVNAME(zr), fmt->index);
2720
2721                 switch (fmt->type) {
2722                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2723                         flag = ZORAN_FORMAT_CAPTURE;
2724                         break;
2725                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2726                         flag = ZORAN_FORMAT_PLAYBACK;
2727                         break;
2728                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2729                         flag = ZORAN_FORMAT_OVERLAY;
2730                         break;
2731                 default:
2732                         dprintk(1,
2733                                 KERN_ERR
2734                                 "%s: VIDIOC_ENUM_FMT - unknown type %d\n",
2735                                 ZR_DEVNAME(zr), fmt->type);
2736                         return -EINVAL;
2737                 }
2738
2739                 for (i = 0; i < zoran_num_formats; i++) {
2740                         if (zoran_formats[i].flags & flag)
2741                                 num++;
2742                         if (num == fmt->index)
2743                                 break;
2744                 }
2745                 if (fmt->index < 0 /* late, but not too late */  ||
2746                     i == zoran_num_formats)
2747                         return -EINVAL;
2748
2749                 memset(fmt, 0, sizeof(*fmt));
2750                 fmt->index = index;
2751                 fmt->type = type;
2752                 strncpy(fmt->description, zoran_formats[i].name, sizeof(fmt->description)-1);
2753                 fmt->pixelformat = zoran_formats[i].fourcc;
2754                 if (zoran_formats[i].flags & ZORAN_FORMAT_COMPRESSED)
2755                         fmt->flags |= V4L2_FMT_FLAG_COMPRESSED;
2756
2757                 return 0;
2758         }
2759                 break;
2760
2761         case VIDIOC_G_FMT:
2762         {
2763                 struct v4l2_format *fmt = arg;
2764                 int type = fmt->type;
2765
2766                 dprintk(5, KERN_DEBUG "%s: VIDIOC_G_FMT\n", ZR_DEVNAME(zr));
2767
2768                 memset(fmt, 0, sizeof(*fmt));
2769                 fmt->type = type;
2770
2771                 switch (fmt->type) {
2772                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2773
2774                         mutex_lock(&zr->resource_lock);
2775
2776                         fmt->fmt.win.w.left = fh->overlay_settings.x;
2777                         fmt->fmt.win.w.top = fh->overlay_settings.y;
2778                         fmt->fmt.win.w.width = fh->overlay_settings.width;
2779                         fmt->fmt.win.w.height =
2780                             fh->overlay_settings.height;
2781                         if (fh->overlay_settings.width * 2 >
2782                             BUZ_MAX_HEIGHT)
2783                                 fmt->fmt.win.field = V4L2_FIELD_INTERLACED;
2784                         else
2785                                 fmt->fmt.win.field = V4L2_FIELD_TOP;
2786
2787                         mutex_unlock(&zr->resource_lock);
2788
2789                         break;
2790
2791                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2792                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2793
2794                         mutex_lock(&zr->resource_lock);
2795
2796                         if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2797                             fh->map_mode == ZORAN_MAP_MODE_RAW) {
2798
2799                                 fmt->fmt.pix.width =
2800                                     fh->v4l_settings.width;
2801                                 fmt->fmt.pix.height =
2802                                     fh->v4l_settings.height;
2803                                 fmt->fmt.pix.sizeimage =
2804                                     fh->v4l_buffers.buffer_size;
2805                                 fmt->fmt.pix.pixelformat =
2806                                     fh->v4l_settings.format->fourcc;
2807                                 fmt->fmt.pix.colorspace =
2808                                     fh->v4l_settings.format->colorspace;
2809                                 fmt->fmt.pix.bytesperline = 0;
2810                                 if (BUZ_MAX_HEIGHT <
2811                                     (fh->v4l_settings.height * 2))
2812                                         fmt->fmt.pix.field =
2813                                             V4L2_FIELD_INTERLACED;
2814                                 else
2815                                         fmt->fmt.pix.field =
2816                                             V4L2_FIELD_TOP;
2817
2818                         } else {
2819
2820                                 fmt->fmt.pix.width =
2821                                     fh->jpg_settings.img_width /
2822                                     fh->jpg_settings.HorDcm;
2823                                 fmt->fmt.pix.height =
2824                                     fh->jpg_settings.img_height /
2825                                     (fh->jpg_settings.VerDcm *
2826                                      fh->jpg_settings.TmpDcm);
2827                                 fmt->fmt.pix.sizeimage =
2828                                     zoran_v4l2_calc_bufsize(&fh->
2829                                                             jpg_settings);
2830                                 fmt->fmt.pix.pixelformat =
2831                                     V4L2_PIX_FMT_MJPEG;
2832                                 if (fh->jpg_settings.TmpDcm == 1)
2833                                         fmt->fmt.pix.field =
2834                                             (fh->jpg_settings.
2835                                              odd_even ? V4L2_FIELD_SEQ_BT :
2836                                              V4L2_FIELD_SEQ_BT);
2837                                 else
2838                                         fmt->fmt.pix.field =
2839                                             (fh->jpg_settings.
2840                                              odd_even ? V4L2_FIELD_TOP :
2841                                              V4L2_FIELD_BOTTOM);
2842
2843                                 fmt->fmt.pix.bytesperline = 0;
2844                                 fmt->fmt.pix.colorspace =
2845                                     V4L2_COLORSPACE_SMPTE170M;
2846                         }
2847
2848                         mutex_unlock(&zr->resource_lock);
2849
2850                         break;
2851
2852                 default:
2853                         dprintk(1,
2854                                 KERN_ERR
2855                                 "%s: VIDIOC_G_FMT - unsupported type %d\n",
2856                                 ZR_DEVNAME(zr), fmt->type);
2857                         return -EINVAL;
2858                 }
2859                 return 0;
2860         }
2861                 break;
2862
2863         case VIDIOC_S_FMT:
2864         {
2865                 struct v4l2_format *fmt = arg;
2866                 int i, res = 0;
2867                 __u32 printformat;
2868
2869                 dprintk(3, KERN_DEBUG "%s: VIDIOC_S_FMT - type=%d, ",
2870                         ZR_DEVNAME(zr), fmt->type);
2871
2872                 switch (fmt->type) {
2873                 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
2874
2875                         dprintk(3, "x=%d, y=%d, w=%d, h=%d, cnt=%d, map=0x%p\n",
2876                                 fmt->fmt.win.w.left, fmt->fmt.win.w.top,
2877                                 fmt->fmt.win.w.width,
2878                                 fmt->fmt.win.w.height,
2879                                 fmt->fmt.win.clipcount,
2880                                 fmt->fmt.win.bitmap);
2881                         mutex_lock(&zr->resource_lock);
2882                         res =
2883                             setup_window(file, fmt->fmt.win.w.left,
2884                                          fmt->fmt.win.w.top,
2885                                          fmt->fmt.win.w.width,
2886                                          fmt->fmt.win.w.height,
2887                                          (struct video_clip __user *)
2888                                            fmt->fmt.win.clips,
2889                                          fmt->fmt.win.clipcount,
2890                                          fmt->fmt.win.bitmap);
2891                         mutex_unlock(&zr->resource_lock);
2892                         return res;
2893                         break;
2894
2895                 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
2896                 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
2897
2898                         printformat =
2899                             __cpu_to_le32(fmt->fmt.pix.pixelformat);
2900                         dprintk(3, "size=%dx%d, fmt=0x%x (%4.4s)\n",
2901                                 fmt->fmt.pix.width, fmt->fmt.pix.height,
2902                                 fmt->fmt.pix.pixelformat,
2903                                 (char *) &printformat);
2904
2905                         if (fmt->fmt.pix.bytesperline > 0) {
2906                                 dprintk(5,
2907                                         KERN_ERR "%s: bpl not supported\n",
2908                                         ZR_DEVNAME(zr));
2909                                 return -EINVAL;
2910                         }
2911
2912                         /* we can be requested to do JPEG/raw playback/capture */
2913                         if (!
2914                             (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2915                              (fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT &&
2916                               fmt->fmt.pix.pixelformat ==
2917                               V4L2_PIX_FMT_MJPEG))) {
2918                                 dprintk(1,
2919                                         KERN_ERR
2920                                         "%s: VIDIOC_S_FMT - unknown type %d/0x%x(%4.4s) combination\n",
2921                                         ZR_DEVNAME(zr), fmt->type,
2922                                         fmt->fmt.pix.pixelformat,
2923                                         (char *) &printformat);
2924                                 return -EINVAL;
2925                         }
2926
2927                         if (fmt->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG) {
2928                                 mutex_lock(&zr->resource_lock);
2929
2930                                 settings = fh->jpg_settings;
2931
2932                                 if (fh->v4l_buffers.allocated ||
2933                                     fh->jpg_buffers.allocated) {
2934                                         dprintk(1,
2935                                                 KERN_ERR
2936                                                 "%s: VIDIOC_S_FMT - cannot change capture mode\n",
2937                                                 ZR_DEVNAME(zr));
2938                                         res = -EBUSY;
2939                                         goto sfmtjpg_unlock_and_return;
2940                                 }
2941
2942                                 /* we actually need to set 'real' parameters now */
2943                                 if ((fmt->fmt.pix.height * 2) >
2944                                     BUZ_MAX_HEIGHT)
2945                                         settings.TmpDcm = 1;
2946                                 else
2947                                         settings.TmpDcm = 2;
2948                                 settings.decimation = 0;
2949                                 if (fmt->fmt.pix.height <=
2950                                     fh->jpg_settings.img_height / 2)
2951                                         settings.VerDcm = 2;
2952                                 else
2953                                         settings.VerDcm = 1;
2954                                 if (fmt->fmt.pix.width <=
2955                                     fh->jpg_settings.img_width / 4)
2956                                         settings.HorDcm = 4;
2957                                 else if (fmt->fmt.pix.width <=
2958                                          fh->jpg_settings.img_width / 2)
2959                                         settings.HorDcm = 2;
2960                                 else
2961                                         settings.HorDcm = 1;
2962                                 if (settings.TmpDcm == 1)
2963                                         settings.field_per_buff = 2;
2964                                 else
2965                                         settings.field_per_buff = 1;
2966
2967                                 /* check */
2968                                 if ((res =
2969                                      zoran_check_jpg_settings(zr,
2970                                                               &settings)))
2971                                         goto sfmtjpg_unlock_and_return;
2972
2973                                 /* it's ok, so set them */
2974                                 fh->jp