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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / media / v4l2-core / v4l2-ioctl.c
blobb2ef8e60ea7da19d430f908089fdb3a4a66008d0
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Video capture interface for Linux version 2
4 *
5 * A generic framework to process V4L2 ioctl commands.
6 *
7 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
8 * Mauro Carvalho Chehab <mchehab@kernel.org> (version 2)
9 */
10
11 #include <linux/mm.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/version.h>
17
18 #include <linux/videodev2.h>
19
20 #include <media/v4l2-common.h>
21 #include <media/v4l2-ioctl.h>
22 #include <media/v4l2-ctrls.h>
23 #include <media/v4l2-fh.h>
24 #include <media/v4l2-event.h>
25 #include <media/v4l2-device.h>
26 #include <media/videobuf2-v4l2.h>
27 #include <media/v4l2-mc.h>
28 #include <media/v4l2-mem2mem.h>
29
30 #include <trace/events/v4l2.h>
31
32 /* Zero out the end of the struct pointed to by p. Everything after, but
33 * not including, the specified field is cleared. */
34 #define CLEAR_AFTER_FIELD(p, field) \
35 memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \
36 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field))
37
38 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
39
40 struct std_descr {
41 v4l2_std_id std;
42 const char *descr;
43 };
44
45 static const struct std_descr standards[] = {
46 { V4L2_STD_NTSC, "NTSC" },
47 { V4L2_STD_NTSC_M, "NTSC-M" },
48 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
49 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
50 { V4L2_STD_NTSC_443, "NTSC-443" },
51 { V4L2_STD_PAL, "PAL" },
52 { V4L2_STD_PAL_BG, "PAL-BG" },
53 { V4L2_STD_PAL_B, "PAL-B" },
54 { V4L2_STD_PAL_B1, "PAL-B1" },
55 { V4L2_STD_PAL_G, "PAL-G" },
56 { V4L2_STD_PAL_H, "PAL-H" },
57 { V4L2_STD_PAL_I, "PAL-I" },
58 { V4L2_STD_PAL_DK, "PAL-DK" },
59 { V4L2_STD_PAL_D, "PAL-D" },
60 { V4L2_STD_PAL_D1, "PAL-D1" },
61 { V4L2_STD_PAL_K, "PAL-K" },
62 { V4L2_STD_PAL_M, "PAL-M" },
63 { V4L2_STD_PAL_N, "PAL-N" },
64 { V4L2_STD_PAL_Nc, "PAL-Nc" },
65 { V4L2_STD_PAL_60, "PAL-60" },
66 { V4L2_STD_SECAM, "SECAM" },
67 { V4L2_STD_SECAM_B, "SECAM-B" },
68 { V4L2_STD_SECAM_G, "SECAM-G" },
69 { V4L2_STD_SECAM_H, "SECAM-H" },
70 { V4L2_STD_SECAM_DK, "SECAM-DK" },
71 { V4L2_STD_SECAM_D, "SECAM-D" },
72 { V4L2_STD_SECAM_K, "SECAM-K" },
73 { V4L2_STD_SECAM_K1, "SECAM-K1" },
74 { V4L2_STD_SECAM_L, "SECAM-L" },
75 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
76 { 0, "Unknown" }
77 };
78
79 /* video4linux standard ID conversion to standard name
80 */
81 const char *v4l2_norm_to_name(v4l2_std_id id)
82 {
83 u32 myid = id;
84 int i;
85
86 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
87 64 bit comparisons. So, on that architecture, with some gcc
88 variants, compilation fails. Currently, the max value is 30bit wide.
89 */
90 BUG_ON(myid != id);
91
92 for (i = 0; standards[i].std; i++)
93 if (myid == standards[i].std)
94 break;
95 return standards[i].descr;
96 }
97 EXPORT_SYMBOL(v4l2_norm_to_name);
98
99 /* Returns frame period for the given standard */
100 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
101 {
102 if (id & V4L2_STD_525_60) {
103 frameperiod->numerator = 1001;
104 frameperiod->denominator = 30000;
105 } else {
106 frameperiod->numerator = 1;
107 frameperiod->denominator = 25;
108 }
109 }
110 EXPORT_SYMBOL(v4l2_video_std_frame_period);
111
112 /* Fill in the fields of a v4l2_standard structure according to the
113 'id' and 'transmission' parameters. Returns negative on error. */
114 int v4l2_video_std_construct(struct v4l2_standard *vs,
115 int id, const char *name)
116 {
117 vs->id = id;
118 v4l2_video_std_frame_period(id, &vs->frameperiod);
119 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
120 strscpy(vs->name, name, sizeof(vs->name));
121 return 0;
122 }
123 EXPORT_SYMBOL(v4l2_video_std_construct);
124
125 /* Fill in the fields of a v4l2_standard structure according to the
126 * 'id' and 'vs->index' parameters. Returns negative on error. */
127 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
128 {
129 v4l2_std_id curr_id = 0;
130 unsigned int index = vs->index, i, j = 0;
131 const char *descr = "";
132
133 /* Return -ENODATA if the id for the current input
134 or output is 0, meaning that it doesn't support this API. */
135 if (id == 0)
136 return -ENODATA;
137
138 /* Return norm array in a canonical way */
139 for (i = 0; i <= index && id; i++) {
140 /* last std value in the standards array is 0, so this
141 while always ends there since (id & 0) == 0. */
142 while ((id & standards[j].std) != standards[j].std)
143 j++;
144 curr_id = standards[j].std;
145 descr = standards[j].descr;
146 j++;
147 if (curr_id == 0)
148 break;
149 if (curr_id != V4L2_STD_PAL &&
150 curr_id != V4L2_STD_SECAM &&
151 curr_id != V4L2_STD_NTSC)
152 id &= ~curr_id;
153 }
154 if (i <= index)
155 return -EINVAL;
156
157 v4l2_video_std_construct(vs, curr_id, descr);
158 return 0;
159 }
160
161 /* ----------------------------------------------------------------- */
162 /* some arrays for pretty-printing debug messages of enum types */
163
164 const char *v4l2_field_names[] = {
165 [V4L2_FIELD_ANY] = "any",
166 [V4L2_FIELD_NONE] = "none",
167 [V4L2_FIELD_TOP] = "top",
168 [V4L2_FIELD_BOTTOM] = "bottom",
169 [V4L2_FIELD_INTERLACED] = "interlaced",
170 [V4L2_FIELD_SEQ_TB] = "seq-tb",
171 [V4L2_FIELD_SEQ_BT] = "seq-bt",
172 [V4L2_FIELD_ALTERNATE] = "alternate",
173 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
174 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
175 };
176 EXPORT_SYMBOL(v4l2_field_names);
177
178 const char *v4l2_type_names[] = {
179 [0] = "0",
180 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
181 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
182 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
183 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
184 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
185 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
186 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
187 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
188 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
189 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
190 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
191 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
192 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
193 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
194 };
195 EXPORT_SYMBOL(v4l2_type_names);
196
197 static const char *v4l2_memory_names[] = {
198 [V4L2_MEMORY_MMAP] = "mmap",
199 [V4L2_MEMORY_USERPTR] = "userptr",
200 [V4L2_MEMORY_OVERLAY] = "overlay",
201 [V4L2_MEMORY_DMABUF] = "dmabuf",
202 };
203
204 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
205
206 /* ------------------------------------------------------------------ */
207 /* debug help functions */
208
209 static void v4l_print_querycap(const void *arg, bool write_only)
210 {
211 const struct v4l2_capability *p = arg;
212
213 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
214 (int)sizeof(p->driver), p->driver,
215 (int)sizeof(p->card), p->card,
216 (int)sizeof(p->bus_info), p->bus_info,
217 p->version, p->capabilities, p->device_caps);
218 }
219
220 static void v4l_print_enuminput(const void *arg, bool write_only)
221 {
222 const struct v4l2_input *p = arg;
223
224 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
225 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
226 p->tuner, (unsigned long long)p->std, p->status,
227 p->capabilities);
228 }
229
230 static void v4l_print_enumoutput(const void *arg, bool write_only)
231 {
232 const struct v4l2_output *p = arg;
233
234 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
235 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
236 p->modulator, (unsigned long long)p->std, p->capabilities);
237 }
238
239 static void v4l_print_audio(const void *arg, bool write_only)
240 {
241 const struct v4l2_audio *p = arg;
242
243 if (write_only)
244 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
245 else
246 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
247 p->index, (int)sizeof(p->name), p->name,
248 p->capability, p->mode);
249 }
250
251 static void v4l_print_audioout(const void *arg, bool write_only)
252 {
253 const struct v4l2_audioout *p = arg;
254
255 if (write_only)
256 pr_cont("index=%u\n", p->index);
257 else
258 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
259 p->index, (int)sizeof(p->name), p->name,
260 p->capability, p->mode);
261 }
262
263 static void v4l_print_fmtdesc(const void *arg, bool write_only)
264 {
265 const struct v4l2_fmtdesc *p = arg;
266
267 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%c%c%c%c, description='%.*s'\n",
268 p->index, prt_names(p->type, v4l2_type_names),
269 p->flags, (p->pixelformat & 0xff),
270 (p->pixelformat >> 8) & 0xff,
271 (p->pixelformat >> 16) & 0xff,
272 (p->pixelformat >> 24) & 0xff,
273 (int)sizeof(p->description), p->description);
274 }
275
276 static void v4l_print_format(const void *arg, bool write_only)
277 {
278 const struct v4l2_format *p = arg;
279 const struct v4l2_pix_format *pix;
280 const struct v4l2_pix_format_mplane *mp;
281 const struct v4l2_vbi_format *vbi;
282 const struct v4l2_sliced_vbi_format *sliced;
283 const struct v4l2_window *win;
284 const struct v4l2_sdr_format *sdr;
285 const struct v4l2_meta_format *meta;
286 u32 planes;
287 unsigned i;
288
289 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
290 switch (p->type) {
291 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
292 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
293 pix = &p->fmt.pix;
294 pr_cont(", width=%u, height=%u, pixelformat=%c%c%c%c, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
295 pix->width, pix->height,
296 (pix->pixelformat & 0xff),
297 (pix->pixelformat >> 8) & 0xff,
298 (pix->pixelformat >> 16) & 0xff,
299 (pix->pixelformat >> 24) & 0xff,
300 prt_names(pix->field, v4l2_field_names),
301 pix->bytesperline, pix->sizeimage,
302 pix->colorspace, pix->flags, pix->ycbcr_enc,
303 pix->quantization, pix->xfer_func);
304 break;
305 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
306 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
307 mp = &p->fmt.pix_mp;
308 pr_cont(", width=%u, height=%u, format=%c%c%c%c, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
309 mp->width, mp->height,
310 (mp->pixelformat & 0xff),
311 (mp->pixelformat >> 8) & 0xff,
312 (mp->pixelformat >> 16) & 0xff,
313 (mp->pixelformat >> 24) & 0xff,
314 prt_names(mp->field, v4l2_field_names),
315 mp->colorspace, mp->num_planes, mp->flags,
316 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
317 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
318 for (i = 0; i < planes; i++)
319 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
320 mp->plane_fmt[i].bytesperline,
321 mp->plane_fmt[i].sizeimage);
322 break;
323 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
324 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
325 win = &p->fmt.win;
326 /* Note: we can't print the clip list here since the clips
327 * pointer is a userspace pointer, not a kernelspace
328 * pointer. */
329 pr_cont(", wxh=%dx%d, x,y=%d,%d, field=%s, chromakey=0x%08x, clipcount=%u, clips=%p, bitmap=%p, global_alpha=0x%02x\n",
330 win->w.width, win->w.height, win->w.left, win->w.top,
331 prt_names(win->field, v4l2_field_names),
332 win->chromakey, win->clipcount, win->clips,
333 win->bitmap, win->global_alpha);
334 break;
335 case V4L2_BUF_TYPE_VBI_CAPTURE:
336 case V4L2_BUF_TYPE_VBI_OUTPUT:
337 vbi = &p->fmt.vbi;
338 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%c%c%c%c, start=%u,%u, count=%u,%u\n",
339 vbi->sampling_rate, vbi->offset,
340 vbi->samples_per_line,
341 (vbi->sample_format & 0xff),
342 (vbi->sample_format >> 8) & 0xff,
343 (vbi->sample_format >> 16) & 0xff,
344 (vbi->sample_format >> 24) & 0xff,
345 vbi->start[0], vbi->start[1],
346 vbi->count[0], vbi->count[1]);
347 break;
348 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
349 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
350 sliced = &p->fmt.sliced;
351 pr_cont(", service_set=0x%08x, io_size=%d\n",
352 sliced->service_set, sliced->io_size);
353 for (i = 0; i < 24; i++)
354 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
355 sliced->service_lines[0][i],
356 sliced->service_lines[1][i]);
357 break;
358 case V4L2_BUF_TYPE_SDR_CAPTURE:
359 case V4L2_BUF_TYPE_SDR_OUTPUT:
360 sdr = &p->fmt.sdr;
361 pr_cont(", pixelformat=%c%c%c%c\n",
362 (sdr->pixelformat >> 0) & 0xff,
363 (sdr->pixelformat >> 8) & 0xff,
364 (sdr->pixelformat >> 16) & 0xff,
365 (sdr->pixelformat >> 24) & 0xff);
366 break;
367 case V4L2_BUF_TYPE_META_CAPTURE:
368 case V4L2_BUF_TYPE_META_OUTPUT:
369 meta = &p->fmt.meta;
370 pr_cont(", dataformat=%c%c%c%c, buffersize=%u\n",
371 (meta->dataformat >> 0) & 0xff,
372 (meta->dataformat >> 8) & 0xff,
373 (meta->dataformat >> 16) & 0xff,
374 (meta->dataformat >> 24) & 0xff,
375 meta->buffersize);
376 break;
377 }
378 }
379
380 static void v4l_print_framebuffer(const void *arg, bool write_only)
381 {
382 const struct v4l2_framebuffer *p = arg;
383
384 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%c%c%c%c, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
385 p->capability, p->flags, p->base,
386 p->fmt.width, p->fmt.height,
387 (p->fmt.pixelformat & 0xff),
388 (p->fmt.pixelformat >> 8) & 0xff,
389 (p->fmt.pixelformat >> 16) & 0xff,
390 (p->fmt.pixelformat >> 24) & 0xff,
391 p->fmt.bytesperline, p->fmt.sizeimage,
392 p->fmt.colorspace);
393 }
394
395 static void v4l_print_buftype(const void *arg, bool write_only)
396 {
397 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
398 }
399
400 static void v4l_print_modulator(const void *arg, bool write_only)
401 {
402 const struct v4l2_modulator *p = arg;
403
404 if (write_only)
405 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
406 else
407 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
408 p->index, (int)sizeof(p->name), p->name, p->capability,
409 p->rangelow, p->rangehigh, p->txsubchans);
410 }
411
412 static void v4l_print_tuner(const void *arg, bool write_only)
413 {
414 const struct v4l2_tuner *p = arg;
415
416 if (write_only)
417 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
418 else
419 pr_cont("index=%u, name=%.*s, type=%u, capability=0x%x, rangelow=%u, rangehigh=%u, signal=%u, afc=%d, rxsubchans=0x%x, audmode=%u\n",
420 p->index, (int)sizeof(p->name), p->name, p->type,
421 p->capability, p->rangelow,
422 p->rangehigh, p->signal, p->afc,
423 p->rxsubchans, p->audmode);
424 }
425
426 static void v4l_print_frequency(const void *arg, bool write_only)
427 {
428 const struct v4l2_frequency *p = arg;
429
430 pr_cont("tuner=%u, type=%u, frequency=%u\n",
431 p->tuner, p->type, p->frequency);
432 }
433
434 static void v4l_print_standard(const void *arg, bool write_only)
435 {
436 const struct v4l2_standard *p = arg;
437
438 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
439 p->index,
440 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
441 p->frameperiod.numerator,
442 p->frameperiod.denominator,
443 p->framelines);
444 }
445
446 static void v4l_print_std(const void *arg, bool write_only)
447 {
448 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
449 }
450
451 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
452 {
453 const struct v4l2_hw_freq_seek *p = arg;
454
455 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
456 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
457 p->rangelow, p->rangehigh);
458 }
459
460 static void v4l_print_requestbuffers(const void *arg, bool write_only)
461 {
462 const struct v4l2_requestbuffers *p = arg;
463
464 pr_cont("count=%d, type=%s, memory=%s\n",
465 p->count,
466 prt_names(p->type, v4l2_type_names),
467 prt_names(p->memory, v4l2_memory_names));
468 }
469
470 static void v4l_print_buffer(const void *arg, bool write_only)
471 {
472 const struct v4l2_buffer *p = arg;
473 const struct v4l2_timecode *tc = &p->timecode;
474 const struct v4l2_plane *plane;
475 int i;
476
477 pr_cont("%02d:%02d:%02d.%09ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
478 (int)p->timestamp.tv_sec / 3600,
479 ((int)p->timestamp.tv_sec / 60) % 60,
480 ((int)p->timestamp.tv_sec % 60),
481 (long)p->timestamp.tv_usec,
482 p->index,
483 prt_names(p->type, v4l2_type_names), p->request_fd,
484 p->flags, prt_names(p->field, v4l2_field_names),
485 p->sequence, prt_names(p->memory, v4l2_memory_names));
486
487 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
488 pr_cont("\n");
489 for (i = 0; i < p->length; ++i) {
490 plane = &p->m.planes[i];
491 printk(KERN_DEBUG
492 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
493 i, plane->bytesused, plane->data_offset,
494 plane->m.userptr, plane->length);
495 }
496 } else {
497 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
498 p->bytesused, p->m.userptr, p->length);
499 }
500
501 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
502 tc->hours, tc->minutes, tc->seconds,
503 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
504 }
505
506 static void v4l_print_exportbuffer(const void *arg, bool write_only)
507 {
508 const struct v4l2_exportbuffer *p = arg;
509
510 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
511 p->fd, prt_names(p->type, v4l2_type_names),
512 p->index, p->plane, p->flags);
513 }
514
515 static void v4l_print_create_buffers(const void *arg, bool write_only)
516 {
517 const struct v4l2_create_buffers *p = arg;
518
519 pr_cont("index=%d, count=%d, memory=%s, ",
520 p->index, p->count,
521 prt_names(p->memory, v4l2_memory_names));
522 v4l_print_format(&p->format, write_only);
523 }
524
525 static void v4l_print_streamparm(const void *arg, bool write_only)
526 {
527 const struct v4l2_streamparm *p = arg;
528
529 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
530
531 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
532 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
533 const struct v4l2_captureparm *c = &p->parm.capture;
534
535 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
536 c->capability, c->capturemode,
537 c->timeperframe.numerator, c->timeperframe.denominator,
538 c->extendedmode, c->readbuffers);
539 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
540 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
541 const struct v4l2_outputparm *c = &p->parm.output;
542
543 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
544 c->capability, c->outputmode,
545 c->timeperframe.numerator, c->timeperframe.denominator,
546 c->extendedmode, c->writebuffers);
547 } else {
548 pr_cont("\n");
549 }
550 }
551
552 static void v4l_print_queryctrl(const void *arg, bool write_only)
553 {
554 const struct v4l2_queryctrl *p = arg;
555
556 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
557 p->id, p->type, (int)sizeof(p->name), p->name,
558 p->minimum, p->maximum,
559 p->step, p->default_value, p->flags);
560 }
561
562 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
563 {
564 const struct v4l2_query_ext_ctrl *p = arg;
565
566 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%lld/%lld, step=%lld, default=%lld, flags=0x%08x, elem_size=%u, elems=%u, nr_of_dims=%u, dims=%u,%u,%u,%u\n",
567 p->id, p->type, (int)sizeof(p->name), p->name,
568 p->minimum, p->maximum,
569 p->step, p->default_value, p->flags,
570 p->elem_size, p->elems, p->nr_of_dims,
571 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
572 }
573
574 static void v4l_print_querymenu(const void *arg, bool write_only)
575 {
576 const struct v4l2_querymenu *p = arg;
577
578 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
579 }
580
581 static void v4l_print_control(const void *arg, bool write_only)
582 {
583 const struct v4l2_control *p = arg;
584
585 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
586 }
587
588 static void v4l_print_ext_controls(const void *arg, bool write_only)
589 {
590 const struct v4l2_ext_controls *p = arg;
591 int i;
592
593 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
594 p->which, p->count, p->error_idx, p->request_fd);
595 for (i = 0; i < p->count; i++) {
596 if (!p->controls[i].size)
597 pr_cont(", id/val=0x%x/0x%x",
598 p->controls[i].id, p->controls[i].value);
599 else
600 pr_cont(", id/size=0x%x/%u",
601 p->controls[i].id, p->controls[i].size);
602 }
603 pr_cont("\n");
604 }
605
606 static void v4l_print_cropcap(const void *arg, bool write_only)
607 {
608 const struct v4l2_cropcap *p = arg;
609
610 pr_cont("type=%s, bounds wxh=%dx%d, x,y=%d,%d, defrect wxh=%dx%d, x,y=%d,%d, pixelaspect %d/%d\n",
611 prt_names(p->type, v4l2_type_names),
612 p->bounds.width, p->bounds.height,
613 p->bounds.left, p->bounds.top,
614 p->defrect.width, p->defrect.height,
615 p->defrect.left, p->defrect.top,
616 p->pixelaspect.numerator, p->pixelaspect.denominator);
617 }
618
619 static void v4l_print_crop(const void *arg, bool write_only)
620 {
621 const struct v4l2_crop *p = arg;
622
623 pr_cont("type=%s, wxh=%dx%d, x,y=%d,%d\n",
624 prt_names(p->type, v4l2_type_names),
625 p->c.width, p->c.height,
626 p->c.left, p->c.top);
627 }
628
629 static void v4l_print_selection(const void *arg, bool write_only)
630 {
631 const struct v4l2_selection *p = arg;
632
633 pr_cont("type=%s, target=%d, flags=0x%x, wxh=%dx%d, x,y=%d,%d\n",
634 prt_names(p->type, v4l2_type_names),
635 p->target, p->flags,
636 p->r.width, p->r.height, p->r.left, p->r.top);
637 }
638
639 static void v4l_print_jpegcompression(const void *arg, bool write_only)
640 {
641 const struct v4l2_jpegcompression *p = arg;
642
643 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
644 p->quality, p->APPn, p->APP_len,
645 p->COM_len, p->jpeg_markers);
646 }
647
648 static void v4l_print_enc_idx(const void *arg, bool write_only)
649 {
650 const struct v4l2_enc_idx *p = arg;
651
652 pr_cont("entries=%d, entries_cap=%d\n",
653 p->entries, p->entries_cap);
654 }
655
656 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
657 {
658 const struct v4l2_encoder_cmd *p = arg;
659
660 pr_cont("cmd=%d, flags=0x%x\n",
661 p->cmd, p->flags);
662 }
663
664 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
665 {
666 const struct v4l2_decoder_cmd *p = arg;
667
668 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
669
670 if (p->cmd == V4L2_DEC_CMD_START)
671 pr_info("speed=%d, format=%u\n",
672 p->start.speed, p->start.format);
673 else if (p->cmd == V4L2_DEC_CMD_STOP)
674 pr_info("pts=%llu\n", p->stop.pts);
675 }
676
677 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
678 {
679 const struct v4l2_dbg_chip_info *p = arg;
680
681 pr_cont("type=%u, ", p->match.type);
682 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
683 pr_cont("name=%.*s, ",
684 (int)sizeof(p->match.name), p->match.name);
685 else
686 pr_cont("addr=%u, ", p->match.addr);
687 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
688 }
689
690 static void v4l_print_dbg_register(const void *arg, bool write_only)
691 {
692 const struct v4l2_dbg_register *p = arg;
693
694 pr_cont("type=%u, ", p->match.type);
695 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
696 pr_cont("name=%.*s, ",
697 (int)sizeof(p->match.name), p->match.name);
698 else
699 pr_cont("addr=%u, ", p->match.addr);
700 pr_cont("reg=0x%llx, val=0x%llx\n",
701 p->reg, p->val);
702 }
703
704 static void v4l_print_dv_timings(const void *arg, bool write_only)
705 {
706 const struct v4l2_dv_timings *p = arg;
707
708 switch (p->type) {
709 case V4L2_DV_BT_656_1120:
710 pr_cont("type=bt-656/1120, interlaced=%u, pixelclock=%llu, width=%u, height=%u, polarities=0x%x, hfrontporch=%u, hsync=%u, hbackporch=%u, vfrontporch=%u, vsync=%u, vbackporch=%u, il_vfrontporch=%u, il_vsync=%u, il_vbackporch=%u, standards=0x%x, flags=0x%x\n",
711 p->bt.interlaced, p->bt.pixelclock,
712 p->bt.width, p->bt.height,
713 p->bt.polarities, p->bt.hfrontporch,
714 p->bt.hsync, p->bt.hbackporch,
715 p->bt.vfrontporch, p->bt.vsync,
716 p->bt.vbackporch, p->bt.il_vfrontporch,
717 p->bt.il_vsync, p->bt.il_vbackporch,
718 p->bt.standards, p->bt.flags);
719 break;
720 default:
721 pr_cont("type=%d\n", p->type);
722 break;
723 }
724 }
725
726 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
727 {
728 const struct v4l2_enum_dv_timings *p = arg;
729
730 pr_cont("index=%u, ", p->index);
731 v4l_print_dv_timings(&p->timings, write_only);
732 }
733
734 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
735 {
736 const struct v4l2_dv_timings_cap *p = arg;
737
738 switch (p->type) {
739 case V4L2_DV_BT_656_1120:
740 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
741 p->bt.min_width, p->bt.max_width,
742 p->bt.min_height, p->bt.max_height,
743 p->bt.min_pixelclock, p->bt.max_pixelclock,
744 p->bt.standards, p->bt.capabilities);
745 break;
746 default:
747 pr_cont("type=%u\n", p->type);
748 break;
749 }
750 }
751
752 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
753 {
754 const struct v4l2_frmsizeenum *p = arg;
755
756 pr_cont("index=%u, pixelformat=%c%c%c%c, type=%u",
757 p->index,
758 (p->pixel_format & 0xff),
759 (p->pixel_format >> 8) & 0xff,
760 (p->pixel_format >> 16) & 0xff,
761 (p->pixel_format >> 24) & 0xff,
762 p->type);
763 switch (p->type) {
764 case V4L2_FRMSIZE_TYPE_DISCRETE:
765 pr_cont(", wxh=%ux%u\n",
766 p->discrete.width, p->discrete.height);
767 break;
768 case V4L2_FRMSIZE_TYPE_STEPWISE:
769 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
770 p->stepwise.min_width,
771 p->stepwise.min_height,
772 p->stepwise.max_width,
773 p->stepwise.max_height,
774 p->stepwise.step_width,
775 p->stepwise.step_height);
776 break;
777 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
778 /* fall through */
779 default:
780 pr_cont("\n");
781 break;
782 }
783 }
784
785 static void v4l_print_frmivalenum(const void *arg, bool write_only)
786 {
787 const struct v4l2_frmivalenum *p = arg;
788
789 pr_cont("index=%u, pixelformat=%c%c%c%c, wxh=%ux%u, type=%u",
790 p->index,
791 (p->pixel_format & 0xff),
792 (p->pixel_format >> 8) & 0xff,
793 (p->pixel_format >> 16) & 0xff,
794 (p->pixel_format >> 24) & 0xff,
795 p->width, p->height, p->type);
796 switch (p->type) {
797 case V4L2_FRMIVAL_TYPE_DISCRETE:
798 pr_cont(", fps=%d/%d\n",
799 p->discrete.numerator,
800 p->discrete.denominator);
801 break;
802 case V4L2_FRMIVAL_TYPE_STEPWISE:
803 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
804 p->stepwise.min.numerator,
805 p->stepwise.min.denominator,
806 p->stepwise.max.numerator,
807 p->stepwise.max.denominator,
808 p->stepwise.step.numerator,
809 p->stepwise.step.denominator);
810 break;
811 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
812 /* fall through */
813 default:
814 pr_cont("\n");
815 break;
816 }
817 }
818
819 static void v4l_print_event(const void *arg, bool write_only)
820 {
821 const struct v4l2_event *p = arg;
822 const struct v4l2_event_ctrl *c;
823
824 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
825 p->type, p->pending, p->sequence, p->id,
826 p->timestamp.tv_sec, p->timestamp.tv_nsec);
827 switch (p->type) {
828 case V4L2_EVENT_VSYNC:
829 printk(KERN_DEBUG "field=%s\n",
830 prt_names(p->u.vsync.field, v4l2_field_names));
831 break;
832 case V4L2_EVENT_CTRL:
833 c = &p->u.ctrl;
834 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
835 c->changes, c->type);
836 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
837 pr_cont("value64=%lld, ", c->value64);
838 else
839 pr_cont("value=%d, ", c->value);
840 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
841 c->flags, c->minimum, c->maximum,
842 c->step, c->default_value);
843 break;
844 case V4L2_EVENT_FRAME_SYNC:
845 pr_cont("frame_sequence=%u\n",
846 p->u.frame_sync.frame_sequence);
847 break;
848 }
849 }
850
851 static void v4l_print_event_subscription(const void *arg, bool write_only)
852 {
853 const struct v4l2_event_subscription *p = arg;
854
855 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
856 p->type, p->id, p->flags);
857 }
858
859 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
860 {
861 const struct v4l2_sliced_vbi_cap *p = arg;
862 int i;
863
864 pr_cont("type=%s, service_set=0x%08x\n",
865 prt_names(p->type, v4l2_type_names), p->service_set);
866 for (i = 0; i < 24; i++)
867 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
868 p->service_lines[0][i],
869 p->service_lines[1][i]);
870 }
871
872 static void v4l_print_freq_band(const void *arg, bool write_only)
873 {
874 const struct v4l2_frequency_band *p = arg;
875
876 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
877 p->tuner, p->type, p->index,
878 p->capability, p->rangelow,
879 p->rangehigh, p->modulation);
880 }
881
882 static void v4l_print_edid(const void *arg, bool write_only)
883 {
884 const struct v4l2_edid *p = arg;
885
886 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
887 p->pad, p->start_block, p->blocks);
888 }
889
890 static void v4l_print_u32(const void *arg, bool write_only)
891 {
892 pr_cont("value=%u\n", *(const u32 *)arg);
893 }
894
895 static void v4l_print_newline(const void *arg, bool write_only)
896 {
897 pr_cont("\n");
898 }
899
900 static void v4l_print_default(const void *arg, bool write_only)
901 {
902 pr_cont("driver-specific ioctl\n");
903 }
904
905 static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
906 {
907 __u32 i;
908
909 /* zero the reserved fields */
910 c->reserved[0] = 0;
911 for (i = 0; i < c->count; i++)
912 c->controls[i].reserved2[0] = 0;
913
914 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
915 when using extended controls.
916 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
917 is it allowed for backwards compatibility.
918 */
919 if (!allow_priv && c->which == V4L2_CID_PRIVATE_BASE)
920 return 0;
921 if (!c->which)
922 return 1;
923 /* Check that all controls are from the same control class. */
924 for (i = 0; i < c->count; i++) {
925 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
926 c->error_idx = i;
927 return 0;
928 }
929 }
930 return 1;
931 }
932
933 static int check_fmt(struct file *file, enum v4l2_buf_type type)
934 {
935 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
936 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
937 V4L2_CAP_VIDEO_OUTPUT |
938 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
939 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
940 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
941 V4L2_CAP_META_OUTPUT;
942 struct video_device *vfd = video_devdata(file);
943 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
944 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
945 (vfd->device_caps & vid_caps);
946 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
947 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
948 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
949 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
950 (vfd->device_caps & meta_caps);
951 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
952 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
953
954 if (ops == NULL)
955 return -EINVAL;
956
957 switch (type) {
958 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
959 if ((is_vid || is_tch) && is_rx &&
960 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
961 return 0;
962 break;
963 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
964 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
965 return 0;
966 break;
967 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
968 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
969 return 0;
970 break;
971 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
972 if (is_vid && is_tx &&
973 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
974 return 0;
975 break;
976 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
977 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
978 return 0;
979 break;
980 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
981 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
982 return 0;
983 break;
984 case V4L2_BUF_TYPE_VBI_CAPTURE:
985 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
986 return 0;
987 break;
988 case V4L2_BUF_TYPE_VBI_OUTPUT:
989 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
990 return 0;
991 break;
992 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
993 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
994 return 0;
995 break;
996 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
997 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
998 return 0;
999 break;
1000 case V4L2_BUF_TYPE_SDR_CAPTURE:
1001 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
1002 return 0;
1003 break;
1004 case V4L2_BUF_TYPE_SDR_OUTPUT:
1005 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
1006 return 0;
1007 break;
1008 case V4L2_BUF_TYPE_META_CAPTURE:
1009 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
1010 return 0;
1011 break;
1012 case V4L2_BUF_TYPE_META_OUTPUT:
1013 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1014 return 0;
1015 break;
1016 default:
1017 break;
1018 }
1019 return -EINVAL;
1020 }
1021
1022 static void v4l_sanitize_format(struct v4l2_format *fmt)
1023 {
1024 unsigned int offset;
1025
1026 /* Make sure num_planes is not bogus */
1027 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1028 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1029 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1030 VIDEO_MAX_PLANES);
1031
1032 /*
1033 * The v4l2_pix_format structure has been extended with fields that were
1034 * not previously required to be set to zero by applications. The priv
1035 * field, when set to a magic value, indicates the the extended fields
1036 * are valid. Otherwise they will contain undefined values. To simplify
1037 * the API towards drivers zero the extended fields and set the priv
1038 * field to the magic value when the extended pixel format structure
1039 * isn't used by applications.
1040 */
1041
1042 if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
1043 fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1044 return;
1045
1046 if (fmt->fmt.pix.priv == V4L2_PIX_FMT_PRIV_MAGIC)
1047 return;
1048
1049 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1050
1051 offset = offsetof(struct v4l2_pix_format, priv)
1052 + sizeof(fmt->fmt.pix.priv);
1053 memset(((void *)&fmt->fmt.pix) + offset, 0,
1054 sizeof(fmt->fmt.pix) - offset);
1055 }
1056
1057 static int v4l_querycap(const struct v4l2_ioctl_ops *ops,
1058 struct file *file, void *fh, void *arg)
1059 {
1060 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1061 struct video_device *vfd = video_devdata(file);
1062 int ret;
1063
1064 cap->version = LINUX_VERSION_CODE;
1065 cap->device_caps = vfd->device_caps;
1066 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1067
1068 ret = ops->vidioc_querycap(file, fh, cap);
1069
1070 /*
1071 * Drivers must not change device_caps, so check for this and
1072 * warn if this happened.
1073 */
1074 WARN_ON(cap->device_caps != vfd->device_caps);
1075 /*
1076 * Check that capabilities is a superset of
1077 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1078 */
1079 WARN_ON((cap->capabilities &
1080 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1081 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1082 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1083 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1084
1085 return ret;
1086 }
1087
1088 static int v4l_s_input(const struct v4l2_ioctl_ops *ops,
1089 struct file *file, void *fh, void *arg)
1090 {
1091 struct video_device *vfd = video_devdata(file);
1092 int ret;
1093
1094 ret = v4l_enable_media_source(vfd);
1095 if (ret)
1096 return ret;
1097 return ops->vidioc_s_input(file, fh, *(unsigned int *)arg);
1098 }
1099
1100 static int v4l_s_output(const struct v4l2_ioctl_ops *ops,
1101 struct file *file, void *fh, void *arg)
1102 {
1103 return ops->vidioc_s_output(file, fh, *(unsigned int *)arg);
1104 }
1105
1106 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops,
1107 struct file *file, void *fh, void *arg)
1108 {
1109 struct video_device *vfd;
1110 u32 *p = arg;
1111
1112 vfd = video_devdata(file);
1113 *p = v4l2_prio_max(vfd->prio);
1114 return 0;
1115 }
1116
1117 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops,
1118 struct file *file, void *fh, void *arg)
1119 {
1120 struct video_device *vfd;
1121 struct v4l2_fh *vfh;
1122 u32 *p = arg;
1123
1124 vfd = video_devdata(file);
1125 if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
1126 return -ENOTTY;
1127 vfh = file->private_data;
1128 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1129 }
1130
1131 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops,
1132 struct file *file, void *fh, void *arg)
1133 {
1134 struct video_device *vfd = video_devdata(file);
1135 struct v4l2_input *p = arg;
1136
1137 /*
1138 * We set the flags for CAP_DV_TIMINGS &
1139 * CAP_STD here based on ioctl handler provided by the
1140 * driver. If the driver doesn't support these
1141 * for a specific input, it must override these flags.
1142 */
1143 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1144 p->capabilities |= V4L2_IN_CAP_STD;
1145
1146 return ops->vidioc_enum_input(file, fh, p);
1147 }
1148
1149 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops,
1150 struct file *file, void *fh, void *arg)
1151 {
1152 struct video_device *vfd = video_devdata(file);
1153 struct v4l2_output *p = arg;
1154
1155 /*
1156 * We set the flags for CAP_DV_TIMINGS &
1157 * CAP_STD here based on ioctl handler provided by the
1158 * driver. If the driver doesn't support these
1159 * for a specific output, it must override these flags.
1160 */
1161 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1162 p->capabilities |= V4L2_OUT_CAP_STD;
1163
1164 return ops->vidioc_enum_output(file, fh, p);
1165 }
1166
1167 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1168 {
1169 const unsigned sz = sizeof(fmt->description);
1170 const char *descr = NULL;
1171 u32 flags = 0;
1172
1173 /*
1174 * We depart from the normal coding style here since the descriptions
1175 * should be aligned so it is easy to see which descriptions will be
1176 * longer than 31 characters (the max length for a description).
1177 * And frankly, this is easier to read anyway.
1178 *
1179 * Note that gcc will use O(log N) comparisons to find the right case.
1180 */
1181 switch (fmt->pixelformat) {
1182 /* Max description length mask: descr = "0123456789012345678901234567890" */
1183 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1184 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1185 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1186 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1187 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1188 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1189 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1190 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1191 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1192 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1193 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1194 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1195 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1196 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1197 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1198 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1199 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1200 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1201 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1202 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1203 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1204 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1205 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1206 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1207 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1208 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1209 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1210 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1211 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1212 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1213 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1214 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1215 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1216 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1217 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1218 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1219 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1220 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1221 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1222 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1223 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1224 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1225 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1226 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1227 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1228 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1229 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1230 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1231 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1232 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1233 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1234 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1235 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1236 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1237 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1238 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1239 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1240 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1241 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1242 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1243 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1244 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1245 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1246 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1247 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1248 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1249 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1250 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1251 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1252 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1253 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1254 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1255 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1256 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1257 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1258 case V4L2_PIX_FMT_HM12: descr = "YUV 4:2:0 (16x16 Macroblocks)"; break;
1259 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1260 case V4L2_PIX_FMT_NV12: descr = "Y/CbCr 4:2:0"; break;
1261 case V4L2_PIX_FMT_NV21: descr = "Y/CrCb 4:2:0"; break;
1262 case V4L2_PIX_FMT_NV16: descr = "Y/CbCr 4:2:2"; break;
1263 case V4L2_PIX_FMT_NV61: descr = "Y/CrCb 4:2:2"; break;
1264 case V4L2_PIX_FMT_NV24: descr = "Y/CbCr 4:4:4"; break;
1265 case V4L2_PIX_FMT_NV42: descr = "Y/CrCb 4:4:4"; break;
1266 case V4L2_PIX_FMT_NV12M: descr = "Y/CbCr 4:2:0 (N-C)"; break;
1267 case V4L2_PIX_FMT_NV21M: descr = "Y/CrCb 4:2:0 (N-C)"; break;
1268 case V4L2_PIX_FMT_NV16M: descr = "Y/CbCr 4:2:2 (N-C)"; break;
1269 case V4L2_PIX_FMT_NV61M: descr = "Y/CrCb 4:2:2 (N-C)"; break;
1270 case V4L2_PIX_FMT_NV12MT: descr = "Y/CbCr 4:2:0 (64x32 MB, N-C)"; break;
1271 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/CbCr 4:2:0 (16x16 MB, N-C)"; break;
1272 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1273 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1274 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1275 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1276 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1277 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1278 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1279 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1280 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1281 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1282 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1283 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1284 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1285 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1286 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1287 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1288 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1289 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1290 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1291 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1292 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1293 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1294 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1295 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1296 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1297 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1298 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1299 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1300 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1301 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1302 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1303 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1304 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1305 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1306 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1307 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1308 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1309 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1310 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1311 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1312 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1313 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1314 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1315 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1316 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1317 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1318 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1319 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1320 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1321 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1322 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1323 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1324 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1325 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1326 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1327 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1328 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1329 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1330 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1331 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1332 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1333 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1334 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1335 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1336 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1337 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1338 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1339 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1340 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1341 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1342 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1343 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1344 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1345 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1346 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1347 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1348 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1349
1350 default:
1351 /* Compressed formats */
1352 flags = V4L2_FMT_FLAG_COMPRESSED;
1353 switch (fmt->pixelformat) {
1354 /* Max description length mask: descr = "0123456789012345678901234567890" */
1355 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1356 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1357 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1358 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1359 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1360 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1361 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1362 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1363 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1364 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1365 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1366 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1367 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1368 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1369 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1370 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1371 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1372 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1373 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1374 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1375 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1376 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1377 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1378 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1379 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1380 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1381 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1382 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1383 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1384 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1385 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1386 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1387 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1388 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1389 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1390 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1391 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1392 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1393 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1394 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1395 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1396 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1397 case V4L2_PIX_FMT_SUNXI_TILED_NV12: descr = "Sunxi Tiled NV12 Format"; break;
1398 default:
1399 if (fmt->description[0])
1400 return;
1401 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1402 flags = 0;
1403 snprintf(fmt->description, sz, "%c%c%c%c%s",
1404 (char)(fmt->pixelformat & 0x7f),
1405 (char)((fmt->pixelformat >> 8) & 0x7f),
1406 (char)((fmt->pixelformat >> 16) & 0x7f),
1407 (char)((fmt->pixelformat >> 24) & 0x7f),
1408 (fmt->pixelformat & (1UL << 31)) ? "-BE" : "");
1409 break;
1410 }
1411 }
1412
1413 if (descr)
1414 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1415 fmt->flags |= flags;
1416 }
1417
1418 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops,
1419 struct file *file, void *fh, void *arg)
1420 {
1421 struct video_device *vdev = video_devdata(file);
1422 struct v4l2_fmtdesc *p = arg;
1423 int ret = check_fmt(file, p->type);
1424 u32 cap_mask;
1425
1426 if (ret)
1427 return ret;
1428 ret = -EINVAL;
1429
1430 switch (p->type) {
1431 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1432 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1433 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1434 V4L2_CAP_VIDEO_M2M_MPLANE;
1435 if (!!(vdev->device_caps & cap_mask) !=
1436 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1437 break;
1438
1439 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1440 break;
1441 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, arg);
1442 break;
1443 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1444 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1445 break;
1446 ret = ops->vidioc_enum_fmt_vid_overlay(file, fh, arg);
1447 break;
1448 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1449 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1450 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1451 V4L2_CAP_VIDEO_M2M_MPLANE;
1452 if (!!(vdev->device_caps & cap_mask) !=
1453 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1454 break;
1455
1456 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1457 break;
1458 ret = ops->vidioc_enum_fmt_vid_out(file, fh, arg);
1459 break;
1460 case V4L2_BUF_TYPE_SDR_CAPTURE:
1461 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1462 break;
1463 ret = ops->vidioc_enum_fmt_sdr_cap(file, fh, arg);
1464 break;
1465 case V4L2_BUF_TYPE_SDR_OUTPUT:
1466 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1467 break;
1468 ret = ops->vidioc_enum_fmt_sdr_out(file, fh, arg);
1469 break;
1470 case V4L2_BUF_TYPE_META_CAPTURE:
1471 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1472 break;
1473 ret = ops->vidioc_enum_fmt_meta_cap(file, fh, arg);
1474 break;
1475 case V4L2_BUF_TYPE_META_OUTPUT:
1476 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1477 break;
1478 ret = ops->vidioc_enum_fmt_meta_out(file, fh, arg);
1479 break;
1480 }
1481 if (ret == 0)
1482 v4l_fill_fmtdesc(p);
1483 return ret;
1484 }
1485
1486 static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1487 {
1488 /*
1489 * The v4l2_pix_format structure contains fields that make no sense for
1490 * touch. Set them to default values in this case.
1491 */
1492
1493 p->field = V4L2_FIELD_NONE;
1494 p->colorspace = V4L2_COLORSPACE_RAW;
1495 p->flags = 0;
1496 p->ycbcr_enc = 0;
1497 p->quantization = 0;
1498 p->xfer_func = 0;
1499 }
1500
1501 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops,
1502 struct file *file, void *fh, void *arg)
1503 {
1504 struct v4l2_format *p = arg;
1505 struct video_device *vfd = video_devdata(file);
1506 int ret = check_fmt(file, p->type);
1507
1508 if (ret)
1509 return ret;
1510
1511 /*
1512 * fmt can't be cleared for these overlay types due to the 'clips'
1513 * 'clipcount' and 'bitmap' pointers in struct v4l2_window.
1514 * Those are provided by the user. So handle these two overlay types
1515 * first, and then just do a simple memset for the other types.
1516 */
1517 switch (p->type) {
1518 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1519 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: {
1520 struct v4l2_clip __user *clips = p->fmt.win.clips;
1521 u32 clipcount = p->fmt.win.clipcount;
1522 void __user *bitmap = p->fmt.win.bitmap;
1523
1524 memset(&p->fmt, 0, sizeof(p->fmt));
1525 p->fmt.win.clips = clips;
1526 p->fmt.win.clipcount = clipcount;
1527 p->fmt.win.bitmap = bitmap;
1528 break;
1529 }
1530 default:
1531 memset(&p->fmt, 0, sizeof(p->fmt));
1532 break;
1533 }
1534
1535 switch (p->type) {
1536 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1537 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1538 break;
1539 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1540 ret = ops->vidioc_g_fmt_vid_cap(file, fh, arg);
1541 /* just in case the driver zeroed it again */
1542 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1543 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1544 v4l_pix_format_touch(&p->fmt.pix);
1545 return ret;
1546 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1547 return ops->vidioc_g_fmt_vid_cap_mplane(file, fh, arg);
1548 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1549 return ops->vidioc_g_fmt_vid_overlay(file, fh, arg);
1550 case V4L2_BUF_TYPE_VBI_CAPTURE:
1551 return ops->vidioc_g_fmt_vbi_cap(file, fh, arg);
1552 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1553 return ops->vidioc_g_fmt_sliced_vbi_cap(file, fh, arg);
1554 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1555 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1556 break;
1557 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1558 ret = ops->vidioc_g_fmt_vid_out(file, fh, arg);
1559 /* just in case the driver zeroed it again */
1560 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1561 return ret;
1562 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1563 return ops->vidioc_g_fmt_vid_out_mplane(file, fh, arg);
1564 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1565 return ops->vidioc_g_fmt_vid_out_overlay(file, fh, arg);
1566 case V4L2_BUF_TYPE_VBI_OUTPUT:
1567 return ops->vidioc_g_fmt_vbi_out(file, fh, arg);
1568 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1569 return ops->vidioc_g_fmt_sliced_vbi_out(file, fh, arg);
1570 case V4L2_BUF_TYPE_SDR_CAPTURE:
1571 return ops->vidioc_g_fmt_sdr_cap(file, fh, arg);
1572 case V4L2_BUF_TYPE_SDR_OUTPUT:
1573 return ops->vidioc_g_fmt_sdr_out(file, fh, arg);
1574 case V4L2_BUF_TYPE_META_CAPTURE:
1575 return ops->vidioc_g_fmt_meta_cap(file, fh, arg);
1576 case V4L2_BUF_TYPE_META_OUTPUT:
1577 return ops->vidioc_g_fmt_meta_out(file, fh, arg);
1578 }
1579 return -EINVAL;
1580 }
1581
1582 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops,
1583 struct file *file, void *fh, void *arg)
1584 {
1585 struct v4l2_format *p = arg;
1586 struct video_device *vfd = video_devdata(file);
1587 int ret = check_fmt(file, p->type);
1588 unsigned int i;
1589
1590 if (ret)
1591 return ret;
1592
1593 ret = v4l_enable_media_source(vfd);
1594 if (ret)
1595 return ret;
1596 v4l_sanitize_format(p);
1597
1598 switch (p->type) {
1599 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1600 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1601 break;
1602 CLEAR_AFTER_FIELD(p, fmt.pix);
1603 ret = ops->vidioc_s_fmt_vid_cap(file, fh, arg);
1604 /* just in case the driver zeroed it again */
1605 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1606 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1607 v4l_pix_format_touch(&p->fmt.pix);
1608 return ret;
1609 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1610 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1611 break;
1612 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1613 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1614 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1615 bytesperline);
1616 return ops->vidioc_s_fmt_vid_cap_mplane(file, fh, arg);
1617 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1618 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1619 break;
1620 CLEAR_AFTER_FIELD(p, fmt.win);
1621 return ops->vidioc_s_fmt_vid_overlay(file, fh, arg);
1622 case V4L2_BUF_TYPE_VBI_CAPTURE:
1623 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1624 break;
1625 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1626 return ops->vidioc_s_fmt_vbi_cap(file, fh, arg);
1627 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1628 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1629 break;
1630 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1631 return ops->vidioc_s_fmt_sliced_vbi_cap(file, fh, arg);
1632 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1633 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1634 break;
1635 CLEAR_AFTER_FIELD(p, fmt.pix);
1636 ret = ops->vidioc_s_fmt_vid_out(file, fh, arg);
1637 /* just in case the driver zeroed it again */
1638 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1639 return ret;
1640 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1641 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1642 break;
1643 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1644 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1645 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1646 bytesperline);
1647 return ops->vidioc_s_fmt_vid_out_mplane(file, fh, arg);
1648 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1649 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1650 break;
1651 CLEAR_AFTER_FIELD(p, fmt.win);
1652 return ops->vidioc_s_fmt_vid_out_overlay(file, fh, arg);
1653 case V4L2_BUF_TYPE_VBI_OUTPUT:
1654 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1655 break;
1656 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1657 return ops->vidioc_s_fmt_vbi_out(file, fh, arg);
1658 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1659 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1660 break;
1661 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1662 return ops->vidioc_s_fmt_sliced_vbi_out(file, fh, arg);
1663 case V4L2_BUF_TYPE_SDR_CAPTURE:
1664 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1665 break;
1666 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1667 return ops->vidioc_s_fmt_sdr_cap(file, fh, arg);
1668 case V4L2_BUF_TYPE_SDR_OUTPUT:
1669 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1670 break;
1671 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1672 return ops->vidioc_s_fmt_sdr_out(file, fh, arg);
1673 case V4L2_BUF_TYPE_META_CAPTURE:
1674 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1675 break;
1676 CLEAR_AFTER_FIELD(p, fmt.meta);
1677 return ops->vidioc_s_fmt_meta_cap(file, fh, arg);
1678 case V4L2_BUF_TYPE_META_OUTPUT:
1679 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1680 break;
1681 CLEAR_AFTER_FIELD(p, fmt.meta);
1682 return ops->vidioc_s_fmt_meta_out(file, fh, arg);
1683 }
1684 return -EINVAL;
1685 }
1686
1687 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops,
1688 struct file *file, void *fh, void *arg)
1689 {
1690 struct v4l2_format *p = arg;
1691 struct video_device *vfd = video_devdata(file);
1692 int ret = check_fmt(file, p->type);
1693 unsigned int i;
1694
1695 if (ret)
1696 return ret;
1697
1698 v4l_sanitize_format(p);
1699
1700 switch (p->type) {
1701 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1702 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1703 break;
1704 CLEAR_AFTER_FIELD(p, fmt.pix);
1705 ret = ops->vidioc_try_fmt_vid_cap(file, fh, arg);
1706 /* just in case the driver zeroed it again */
1707 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1708 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1709 v4l_pix_format_touch(&p->fmt.pix);
1710 return ret;
1711 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1712 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1713 break;
1714 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1715 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1716 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1717 bytesperline);
1718 return ops->vidioc_try_fmt_vid_cap_mplane(file, fh, arg);
1719 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1720 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1721 break;
1722 CLEAR_AFTER_FIELD(p, fmt.win);
1723 return ops->vidioc_try_fmt_vid_overlay(file, fh, arg);
1724 case V4L2_BUF_TYPE_VBI_CAPTURE:
1725 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1726 break;
1727 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1728 return ops->vidioc_try_fmt_vbi_cap(file, fh, arg);
1729 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1730 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1731 break;
1732 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1733 return ops->vidioc_try_fmt_sliced_vbi_cap(file, fh, arg);
1734 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1735 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1736 break;
1737 CLEAR_AFTER_FIELD(p, fmt.pix);
1738 ret = ops->vidioc_try_fmt_vid_out(file, fh, arg);
1739 /* just in case the driver zeroed it again */
1740 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1741 return ret;
1742 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1743 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1744 break;
1745 CLEAR_AFTER_FIELD(p, fmt.pix_mp.xfer_func);
1746 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1747 CLEAR_AFTER_FIELD(&p->fmt.pix_mp.plane_fmt[i],
1748 bytesperline);
1749 return ops->vidioc_try_fmt_vid_out_mplane(file, fh, arg);
1750 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1751 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1752 break;
1753 CLEAR_AFTER_FIELD(p, fmt.win);
1754 return ops->vidioc_try_fmt_vid_out_overlay(file, fh, arg);
1755 case V4L2_BUF_TYPE_VBI_OUTPUT:
1756 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1757 break;
1758 CLEAR_AFTER_FIELD(p, fmt.vbi.flags);
1759 return ops->vidioc_try_fmt_vbi_out(file, fh, arg);
1760 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1761 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1762 break;
1763 CLEAR_AFTER_FIELD(p, fmt.sliced.io_size);
1764 return ops->vidioc_try_fmt_sliced_vbi_out(file, fh, arg);
1765 case V4L2_BUF_TYPE_SDR_CAPTURE:
1766 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1767 break;
1768 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1769 return ops->vidioc_try_fmt_sdr_cap(file, fh, arg);
1770 case V4L2_BUF_TYPE_SDR_OUTPUT:
1771 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1772 break;
1773 CLEAR_AFTER_FIELD(p, fmt.sdr.buffersize);
1774 return ops->vidioc_try_fmt_sdr_out(file, fh, arg);
1775 case V4L2_BUF_TYPE_META_CAPTURE:
1776 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1777 break;
1778 CLEAR_AFTER_FIELD(p, fmt.meta);
1779 return ops->vidioc_try_fmt_meta_cap(file, fh, arg);
1780 case V4L2_BUF_TYPE_META_OUTPUT:
1781 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1782 break;
1783 CLEAR_AFTER_FIELD(p, fmt.meta);
1784 return ops->vidioc_try_fmt_meta_out(file, fh, arg);
1785 }
1786 return -EINVAL;
1787 }
1788
1789 static int v4l_streamon(const struct v4l2_ioctl_ops *ops,
1790 struct file *file, void *fh, void *arg)
1791 {
1792 return ops->vidioc_streamon(file, fh, *(unsigned int *)arg);
1793 }
1794
1795 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops,
1796 struct file *file, void *fh, void *arg)
1797 {
1798 return ops->vidioc_streamoff(file, fh, *(unsigned int *)arg);
1799 }
1800
1801 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops,
1802 struct file *file, void *fh, void *arg)
1803 {
1804 struct video_device *vfd = video_devdata(file);
1805 struct v4l2_tuner *p = arg;
1806 int err;
1807
1808 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1809 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1810 err = ops->vidioc_g_tuner(file, fh, p);
1811 if (!err)
1812 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1813 return err;
1814 }
1815
1816 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops,
1817 struct file *file, void *fh, void *arg)
1818 {
1819 struct video_device *vfd = video_devdata(file);
1820 struct v4l2_tuner *p = arg;
1821 int ret;
1822
1823 ret = v4l_enable_media_source(vfd);
1824 if (ret)
1825 return ret;
1826 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1827 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1828 return ops->vidioc_s_tuner(file, fh, p);
1829 }
1830
1831 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
1832 struct file *file, void *fh, void *arg)
1833 {
1834 struct video_device *vfd = video_devdata(file);
1835 struct v4l2_modulator *p = arg;
1836 int err;
1837
1838 if (vfd->vfl_type == VFL_TYPE_RADIO)
1839 p->type = V4L2_TUNER_RADIO;
1840
1841 err = ops->vidioc_g_modulator(file, fh, p);
1842 if (!err)
1843 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1844 return err;
1845 }
1846
1847 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
1848 struct file *file, void *fh, void *arg)
1849 {
1850 struct video_device *vfd = video_devdata(file);
1851 struct v4l2_modulator *p = arg;
1852
1853 if (vfd->vfl_type == VFL_TYPE_RADIO)
1854 p->type = V4L2_TUNER_RADIO;
1855
1856 return ops->vidioc_s_modulator(file, fh, p);
1857 }
1858
1859 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
1860 struct file *file, void *fh, void *arg)
1861 {
1862 struct video_device *vfd = video_devdata(file);
1863 struct v4l2_frequency *p = arg;
1864
1865 if (vfd->vfl_type == VFL_TYPE_SDR)
1866 p->type = V4L2_TUNER_SDR;
1867 else
1868 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1869 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1870 return ops->vidioc_g_frequency(file, fh, p);
1871 }
1872
1873 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
1874 struct file *file, void *fh, void *arg)
1875 {
1876 struct video_device *vfd = video_devdata(file);
1877 const struct v4l2_frequency *p = arg;
1878 enum v4l2_tuner_type type;
1879 int ret;
1880
1881 ret = v4l_enable_media_source(vfd);
1882 if (ret)
1883 return ret;
1884 if (vfd->vfl_type == VFL_TYPE_SDR) {
1885 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
1886 return -EINVAL;
1887 } else {
1888 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1889 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1890 if (type != p->type)
1891 return -EINVAL;
1892 }
1893 return ops->vidioc_s_frequency(file, fh, p);
1894 }
1895
1896 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops,
1897 struct file *file, void *fh, void *arg)
1898 {
1899 struct video_device *vfd = video_devdata(file);
1900 struct v4l2_standard *p = arg;
1901
1902 return v4l_video_std_enumstd(p, vfd->tvnorms);
1903 }
1904
1905 static int v4l_s_std(const struct v4l2_ioctl_ops *ops,
1906 struct file *file, void *fh, void *arg)
1907 {
1908 struct video_device *vfd = video_devdata(file);
1909 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
1910 int ret;
1911
1912 ret = v4l_enable_media_source(vfd);
1913 if (ret)
1914 return ret;
1915 norm = id & vfd->tvnorms;
1916 if (vfd->tvnorms && !norm) /* Check if std is supported */
1917 return -EINVAL;
1918
1919 /* Calls the specific handler */
1920 return ops->vidioc_s_std(file, fh, norm);
1921 }
1922
1923 static int v4l_querystd(const struct v4l2_ioctl_ops *ops,
1924 struct file *file, void *fh, void *arg)
1925 {
1926 struct video_device *vfd = video_devdata(file);
1927 v4l2_std_id *p = arg;
1928 int ret;
1929
1930 ret = v4l_enable_media_source(vfd);
1931 if (ret)
1932 return ret;
1933 /*
1934 * If no signal is detected, then the driver should return
1935 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
1936 * any standards that do not apply removed.
1937 *
1938 * This means that tuners, audio and video decoders can join
1939 * their efforts to improve the standards detection.
1940 */
1941 *p = vfd->tvnorms;
1942 return ops->vidioc_querystd(file, fh, arg);
1943 }
1944
1945 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
1946 struct file *file, void *fh, void *arg)
1947 {
1948 struct video_device *vfd = video_devdata(file);
1949 struct v4l2_hw_freq_seek *p = arg;
1950 enum v4l2_tuner_type type;
1951 int ret;
1952
1953 ret = v4l_enable_media_source(vfd);
1954 if (ret)
1955 return ret;
1956 /* s_hw_freq_seek is not supported for SDR for now */
1957 if (vfd->vfl_type == VFL_TYPE_SDR)
1958 return -EINVAL;
1959
1960 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1961 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1962 if (p->type != type)
1963 return -EINVAL;
1964 return ops->vidioc_s_hw_freq_seek(file, fh, p);
1965 }
1966
1967 static int v4l_overlay(const struct v4l2_ioctl_ops *ops,
1968 struct file *file, void *fh, void *arg)
1969 {
1970 return ops->vidioc_overlay(file, fh, *(unsigned int *)arg);
1971 }
1972
1973 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops,
1974 struct file *file, void *fh, void *arg)
1975 {
1976 struct v4l2_requestbuffers *p = arg;
1977 int ret = check_fmt(file, p->type);
1978
1979 if (ret)
1980 return ret;
1981
1982 CLEAR_AFTER_FIELD(p, capabilities);
1983
1984 return ops->vidioc_reqbufs(file, fh, p);
1985 }
1986
1987 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops,
1988 struct file *file, void *fh, void *arg)
1989 {
1990 struct v4l2_buffer *p = arg;
1991 int ret = check_fmt(file, p->type);
1992
1993 return ret ? ret : ops->vidioc_querybuf(file, fh, p);
1994 }
1995
1996 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops,
1997 struct file *file, void *fh, void *arg)
1998 {
1999 struct v4l2_buffer *p = arg;
2000 int ret = check_fmt(file, p->type);
2001
2002 return ret ? ret : ops->vidioc_qbuf(file, fh, p);
2003 }
2004
2005 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops,
2006 struct file *file, void *fh, void *arg)
2007 {
2008 struct v4l2_buffer *p = arg;
2009 int ret = check_fmt(file, p->type);
2010
2011 return ret ? ret : ops->vidioc_dqbuf(file, fh, p);
2012 }
2013
2014 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2015 struct file *file, void *fh, void *arg)
2016 {
2017 struct v4l2_create_buffers *create = arg;
2018 int ret = check_fmt(file, create->format.type);
2019
2020 if (ret)
2021 return ret;
2022
2023 CLEAR_AFTER_FIELD(create, capabilities);
2024
2025 v4l_sanitize_format(&create->format);
2026
2027 ret = ops->vidioc_create_bufs(file, fh, create);
2028
2029 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2030 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2031 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2032
2033 return ret;
2034 }
2035
2036 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2037 struct file *file, void *fh, void *arg)
2038 {
2039 struct v4l2_buffer *b = arg;
2040 int ret = check_fmt(file, b->type);
2041
2042 return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
2043 }
2044
2045 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
2046 struct file *file, void *fh, void *arg)
2047 {
2048 struct v4l2_streamparm *p = arg;
2049 v4l2_std_id std;
2050 int ret = check_fmt(file, p->type);
2051
2052 if (ret)
2053 return ret;
2054 if (ops->vidioc_g_parm)
2055 return ops->vidioc_g_parm(file, fh, p);
2056 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2057 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2058 return -EINVAL;
2059 p->parm.capture.readbuffers = 2;
2060 ret = ops->vidioc_g_std(file, fh, &std);
2061 if (ret == 0)
2062 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2063 return ret;
2064 }
2065
2066 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops,
2067 struct file *file, void *fh, void *arg)
2068 {
2069 struct v4l2_streamparm *p = arg;
2070 int ret = check_fmt(file, p->type);
2071
2072 if (ret)
2073 return ret;
2074
2075 /* Note: extendedmode is never used in drivers */
2076 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2077 memset(p->parm.output.reserved, 0,
2078 sizeof(p->parm.output.reserved));
2079 p->parm.output.extendedmode = 0;
2080 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2081 } else {
2082 memset(p->parm.capture.reserved, 0,
2083 sizeof(p->parm.capture.reserved));
2084 p->parm.capture.extendedmode = 0;
2085 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2086 }
2087 return ops->vidioc_s_parm(file, fh, p);
2088 }
2089
2090 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops,
2091 struct file *file, void *fh, void *arg)
2092 {
2093 struct video_device *vfd = video_devdata(file);
2094 struct v4l2_queryctrl *p = arg;
2095 struct v4l2_fh *vfh =
2096 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2097
2098 if (vfh && vfh->ctrl_handler)
2099 return v4l2_queryctrl(vfh->ctrl_handler, p);
2100 if (vfd->ctrl_handler)
2101 return v4l2_queryctrl(vfd->ctrl_handler, p);
2102 if (ops->vidioc_queryctrl)
2103 return ops->vidioc_queryctrl(file, fh, p);
2104 return -ENOTTY;
2105 }
2106
2107 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2108 struct file *file, void *fh, void *arg)
2109 {
2110 struct video_device *vfd = video_devdata(file);
2111 struct v4l2_query_ext_ctrl *p = arg;
2112 struct v4l2_fh *vfh =
2113 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2114
2115 if (vfh && vfh->ctrl_handler)
2116 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2117 if (vfd->ctrl_handler)
2118 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2119 if (ops->vidioc_query_ext_ctrl)
2120 return ops->vidioc_query_ext_ctrl(file, fh, p);
2121 return -ENOTTY;
2122 }
2123
2124 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops,
2125 struct file *file, void *fh, void *arg)
2126 {
2127 struct video_device *vfd = video_devdata(file);
2128 struct v4l2_querymenu *p = arg;
2129 struct v4l2_fh *vfh =
2130 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2131
2132 if (vfh && vfh->ctrl_handler)
2133 return v4l2_querymenu(vfh->ctrl_handler, p);
2134 if (vfd->ctrl_handler)
2135 return v4l2_querymenu(vfd->ctrl_handler, p);
2136 if (ops->vidioc_querymenu)
2137 return ops->vidioc_querymenu(file, fh, p);
2138 return -ENOTTY;
2139 }
2140
2141 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops,
2142 struct file *file, void *fh, void *arg)
2143 {
2144 struct video_device *vfd = video_devdata(file);
2145 struct v4l2_control *p = arg;
2146 struct v4l2_fh *vfh =
2147 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2148 struct v4l2_ext_controls ctrls;
2149 struct v4l2_ext_control ctrl;
2150
2151 if (vfh && vfh->ctrl_handler)
2152 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2153 if (vfd->ctrl_handler)
2154 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2155 if (ops->vidioc_g_ctrl)
2156 return ops->vidioc_g_ctrl(file, fh, p);
2157 if (ops->vidioc_g_ext_ctrls == NULL)
2158 return -ENOTTY;
2159
2160 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2161 ctrls.count = 1;
2162 ctrls.controls = &ctrl;
2163 ctrl.id = p->id;
2164 ctrl.value = p->value;
2165 if (check_ext_ctrls(&ctrls, 1)) {
2166 int ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
2167
2168 if (ret == 0)
2169 p->value = ctrl.value;
2170 return ret;
2171 }
2172 return -EINVAL;
2173 }
2174
2175 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops,
2176 struct file *file, void *fh, void *arg)
2177 {
2178 struct video_device *vfd = video_devdata(file);
2179 struct v4l2_control *p = arg;
2180 struct v4l2_fh *vfh =
2181 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2182 struct v4l2_ext_controls ctrls;
2183 struct v4l2_ext_control ctrl;
2184
2185 if (vfh && vfh->ctrl_handler)
2186 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2187 if (vfd->ctrl_handler)
2188 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2189 if (ops->vidioc_s_ctrl)
2190 return ops->vidioc_s_ctrl(file, fh, p);
2191 if (ops->vidioc_s_ext_ctrls == NULL)
2192 return -ENOTTY;
2193
2194 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2195 ctrls.count = 1;
2196 ctrls.controls = &ctrl;
2197 ctrl.id = p->id;
2198 ctrl.value = p->value;
2199 if (check_ext_ctrls(&ctrls, 1))
2200 return ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
2201 return -EINVAL;
2202 }
2203
2204 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2205 struct file *file, void *fh, void *arg)
2206 {
2207 struct video_device *vfd = video_devdata(file);
2208 struct v4l2_ext_controls *p = arg;
2209 struct v4l2_fh *vfh =
2210 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2211
2212 p->error_idx = p->count;
2213 if (vfh && vfh->ctrl_handler)
2214 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2215 vfd, vfd->v4l2_dev->mdev, p);
2216 if (vfd->ctrl_handler)
2217 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2218 vfd, vfd->v4l2_dev->mdev, p);
2219 if (ops->vidioc_g_ext_ctrls == NULL)
2220 return -ENOTTY;
2221 return check_ext_ctrls(p, 0) ? ops->vidioc_g_ext_ctrls(file, fh, p) :
2222 -EINVAL;
2223 }
2224
2225 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2226 struct file *file, void *fh, void *arg)
2227 {
2228 struct video_device *vfd = video_devdata(file);
2229 struct v4l2_ext_controls *p = arg;
2230 struct v4l2_fh *vfh =
2231 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2232
2233 p->error_idx = p->count;
2234 if (vfh && vfh->ctrl_handler)
2235 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2236 vfd, vfd->v4l2_dev->mdev, p);
2237 if (vfd->ctrl_handler)
2238 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2239 vfd, vfd->v4l2_dev->mdev, p);
2240 if (ops->vidioc_s_ext_ctrls == NULL)
2241 return -ENOTTY;
2242 return check_ext_ctrls(p, 0) ? ops->vidioc_s_ext_ctrls(file, fh, p) :
2243 -EINVAL;
2244 }
2245
2246 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2247 struct file *file, void *fh, void *arg)
2248 {
2249 struct video_device *vfd = video_devdata(file);
2250 struct v4l2_ext_controls *p = arg;
2251 struct v4l2_fh *vfh =
2252 test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) ? fh : NULL;
2253
2254 p->error_idx = p->count;
2255 if (vfh && vfh->ctrl_handler)
2256 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2257 vfd, vfd->v4l2_dev->mdev, p);
2258 if (vfd->ctrl_handler)
2259 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2260 vfd, vfd->v4l2_dev->mdev, p);
2261 if (ops->vidioc_try_ext_ctrls == NULL)
2262 return -ENOTTY;
2263 return check_ext_ctrls(p, 0) ? ops->vidioc_try_ext_ctrls(file, fh, p) :
2264 -EINVAL;
2265 }
2266
2267 /*
2268 * The selection API specified originally that the _MPLANE buffer types
2269 * shouldn't be used. The reasons for this are lost in the mists of time
2270 * (or just really crappy memories). Regardless, this is really annoying
2271 * for userspace. So to keep things simple we map _MPLANE buffer types
2272 * to their 'regular' counterparts before calling the driver. And we
2273 * restore it afterwards. This way applications can use either buffer
2274 * type and drivers don't need to check for both.
2275 */
2276 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2277 struct file *file, void *fh, void *arg)
2278 {
2279 struct v4l2_selection *p = arg;
2280 u32 old_type = p->type;
2281 int ret;
2282
2283 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2284 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2285 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2286 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2287 ret = ops->vidioc_g_selection(file, fh, p);
2288 p->type = old_type;
2289 return ret;
2290 }
2291
2292 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2293 struct file *file, void *fh, void *arg)
2294 {
2295 struct v4l2_selection *p = arg;
2296 u32 old_type = p->type;
2297 int ret;
2298
2299 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2300 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2301 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2302 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2303 ret = ops->vidioc_s_selection(file, fh, p);
2304 p->type = old_type;
2305 return ret;
2306 }
2307
2308 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops,
2309 struct file *file, void *fh, void *arg)
2310 {
2311 struct video_device *vfd = video_devdata(file);
2312 struct v4l2_crop *p = arg;
2313 struct v4l2_selection s = {
2314 .type = p->type,
2315 };
2316 int ret;
2317
2318 /* simulate capture crop using selection api */
2319
2320 /* crop means compose for output devices */
2321 if (V4L2_TYPE_IS_OUTPUT(p->type))
2322 s.target = V4L2_SEL_TGT_COMPOSE;
2323 else
2324 s.target = V4L2_SEL_TGT_CROP;
2325
2326 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2327 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2328 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2329
2330 ret = v4l_g_selection(ops, file, fh, &s);
2331
2332 /* copying results to old structure on success */
2333 if (!ret)
2334 p->c = s.r;
2335 return ret;
2336 }
2337
2338 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops,
2339 struct file *file, void *fh, void *arg)
2340 {
2341 struct video_device *vfd = video_devdata(file);
2342 struct v4l2_crop *p = arg;
2343 struct v4l2_selection s = {
2344 .type = p->type,
2345 .r = p->c,
2346 };
2347
2348 /* simulate capture crop using selection api */
2349
2350 /* crop means compose for output devices */
2351 if (V4L2_TYPE_IS_OUTPUT(p->type))
2352 s.target = V4L2_SEL_TGT_COMPOSE;
2353 else
2354 s.target = V4L2_SEL_TGT_CROP;
2355
2356 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2357 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2358 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2359
2360 return v4l_s_selection(ops, file, fh, &s);
2361 }
2362
2363 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops,
2364 struct file *file, void *fh, void *arg)
2365 {
2366 struct video_device *vfd = video_devdata(file);
2367 struct v4l2_cropcap *p = arg;
2368 struct v4l2_selection s = { .type = p->type };
2369 int ret = 0;
2370
2371 /* setting trivial pixelaspect */
2372 p->pixelaspect.numerator = 1;
2373 p->pixelaspect.denominator = 1;
2374
2375 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2376 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2377 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2378 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2379
2380 /*
2381 * The determine_valid_ioctls() call already should ensure
2382 * that this can never happen, but just in case...
2383 */
2384 if (WARN_ON(!ops->vidioc_g_selection))
2385 return -ENOTTY;
2386
2387 if (ops->vidioc_g_pixelaspect)
2388 ret = ops->vidioc_g_pixelaspect(file, fh, s.type,
2389 &p->pixelaspect);
2390
2391 /*
2392 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2393 * square pixel aspect ratio in that case.
2394 */
2395 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2396 return ret;
2397
2398 /* Use g_selection() to fill in the bounds and defrect rectangles */
2399
2400 /* obtaining bounds */
2401 if (V4L2_TYPE_IS_OUTPUT(p->type))
2402 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2403 else
2404 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2405
2406 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2407 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2408 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2409
2410 ret = v4l_g_selection(ops, file, fh, &s);
2411 if (ret)
2412 return ret;
2413 p->bounds = s.r;
2414
2415 /* obtaining defrect */
2416 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2417 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2418 else
2419 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2420
2421 ret = v4l_g_selection(ops, file, fh, &s);
2422 if (ret)
2423 return ret;
2424 p->defrect = s.r;
2425
2426 return 0;
2427 }
2428
2429 static int v4l_log_status(const struct v4l2_ioctl_ops *ops,
2430 struct file *file, void *fh, void *arg)
2431 {
2432 struct video_device *vfd = video_devdata(file);
2433 int ret;
2434
2435 if (vfd->v4l2_dev)
2436 pr_info("%s: ================= START STATUS =================\n",
2437 vfd->v4l2_dev->name);
2438 ret = ops->vidioc_log_status(file, fh);
2439 if (vfd->v4l2_dev)
2440 pr_info("%s: ================== END STATUS ==================\n",
2441 vfd->v4l2_dev->name);
2442 return ret;
2443 }
2444
2445 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2446 struct file *file, void *fh, void *arg)
2447 {
2448 #ifdef CONFIG_VIDEO_ADV_DEBUG
2449 struct v4l2_dbg_register *p = arg;
2450 struct video_device *vfd = video_devdata(file);
2451 struct v4l2_subdev *sd;
2452 int idx = 0;
2453
2454 if (!capable(CAP_SYS_ADMIN))
2455 return -EPERM;
2456 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2457 if (vfd->v4l2_dev == NULL)
2458 return -EINVAL;
2459 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2460 if (p->match.addr == idx++)
2461 return v4l2_subdev_call(sd, core, g_register, p);
2462 return -EINVAL;
2463 }
2464 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2465 (ops->vidioc_g_chip_info || p->match.addr == 0))
2466 return ops->vidioc_g_register(file, fh, p);
2467 return -EINVAL;
2468 #else
2469 return -ENOTTY;
2470 #endif
2471 }
2472
2473 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2474 struct file *file, void *fh, void *arg)
2475 {
2476 #ifdef CONFIG_VIDEO_ADV_DEBUG
2477 const struct v4l2_dbg_register *p = arg;
2478 struct video_device *vfd = video_devdata(file);
2479 struct v4l2_subdev *sd;
2480 int idx = 0;
2481
2482 if (!capable(CAP_SYS_ADMIN))
2483 return -EPERM;
2484 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2485 if (vfd->v4l2_dev == NULL)
2486 return -EINVAL;
2487 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2488 if (p->match.addr == idx++)
2489 return v4l2_subdev_call(sd, core, s_register, p);
2490 return -EINVAL;
2491 }
2492 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2493 (ops->vidioc_g_chip_info || p->match.addr == 0))
2494 return ops->vidioc_s_register(file, fh, p);
2495 return -EINVAL;
2496 #else
2497 return -ENOTTY;
2498 #endif
2499 }
2500
2501 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2502 struct file *file, void *fh, void *arg)
2503 {
2504 #ifdef CONFIG_VIDEO_ADV_DEBUG
2505 struct video_device *vfd = video_devdata(file);
2506 struct v4l2_dbg_chip_info *p = arg;
2507 struct v4l2_subdev *sd;
2508 int idx = 0;
2509
2510 switch (p->match.type) {
2511 case V4L2_CHIP_MATCH_BRIDGE:
2512 if (ops->vidioc_s_register)
2513 p->flags |= V4L2_CHIP_FL_WRITABLE;
2514 if (ops->vidioc_g_register)
2515 p->flags |= V4L2_CHIP_FL_READABLE;
2516 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2517 if (ops->vidioc_g_chip_info)
2518 return ops->vidioc_g_chip_info(file, fh, arg);
2519 if (p->match.addr)
2520 return -EINVAL;
2521 return 0;
2522
2523 case V4L2_CHIP_MATCH_SUBDEV:
2524 if (vfd->v4l2_dev == NULL)
2525 break;
2526 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2527 if (p->match.addr != idx++)
2528 continue;
2529 if (sd->ops->core && sd->ops->core->s_register)
2530 p->flags |= V4L2_CHIP_FL_WRITABLE;
2531 if (sd->ops->core && sd->ops->core->g_register)
2532 p->flags |= V4L2_CHIP_FL_READABLE;
2533 strscpy(p->name, sd->name, sizeof(p->name));
2534 return 0;
2535 }
2536 break;
2537 }
2538 return -EINVAL;
2539 #else
2540 return -ENOTTY;
2541 #endif
2542 }
2543
2544 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops,
2545 struct file *file, void *fh, void *arg)
2546 {
2547 return v4l2_event_dequeue(fh, arg, file->f_flags & O_NONBLOCK);
2548 }
2549
2550 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2551 struct file *file, void *fh, void *arg)
2552 {
2553 return ops->vidioc_subscribe_event(fh, arg);
2554 }
2555
2556 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2557 struct file *file, void *fh, void *arg)
2558 {
2559 return ops->vidioc_unsubscribe_event(fh, arg);
2560 }
2561
2562 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2563 struct file *file, void *fh, void *arg)
2564 {
2565 struct v4l2_sliced_vbi_cap *p = arg;
2566 int ret = check_fmt(file, p->type);
2567
2568 if (ret)
2569 return ret;
2570
2571 /* Clear up to type, everything after type is zeroed already */
2572 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2573
2574 return ops->vidioc_g_sliced_vbi_cap(file, fh, p);
2575 }
2576
2577 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2578 struct file *file, void *fh, void *arg)
2579 {
2580 struct video_device *vfd = video_devdata(file);
2581 struct v4l2_frequency_band *p = arg;
2582 enum v4l2_tuner_type type;
2583 int err;
2584
2585 if (vfd->vfl_type == VFL_TYPE_SDR) {
2586 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2587 return -EINVAL;
2588 type = p->type;
2589 } else {
2590 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2591 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2592 if (type != p->type)
2593 return -EINVAL;
2594 }
2595 if (ops->vidioc_enum_freq_bands) {
2596 err = ops->vidioc_enum_freq_bands(file, fh, p);
2597 if (err != -ENOTTY)
2598 return err;
2599 }
2600 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2601 struct v4l2_tuner t = {
2602 .index = p->tuner,
2603 .type = type,
2604 };
2605
2606 if (p->index)
2607 return -EINVAL;
2608 err = ops->vidioc_g_tuner(file, fh, &t);
2609 if (err)
2610 return err;
2611 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2612 p->rangelow = t.rangelow;
2613 p->rangehigh = t.rangehigh;
2614 p->modulation = (type == V4L2_TUNER_RADIO) ?
2615 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2616 return 0;
2617 }
2618 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2619 struct v4l2_modulator m = {
2620 .index = p->tuner,
2621 };
2622
2623 if (type != V4L2_TUNER_RADIO)
2624 return -EINVAL;
2625 if (p->index)
2626 return -EINVAL;
2627 err = ops->vidioc_g_modulator(file, fh, &m);
2628 if (err)
2629 return err;
2630 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2631 p->rangelow = m.rangelow;
2632 p->rangehigh = m.rangehigh;
2633 p->modulation = (type == V4L2_TUNER_RADIO) ?
2634 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2635 return 0;
2636 }
2637 return -ENOTTY;
2638 }
2639
2640 struct v4l2_ioctl_info {
2641 unsigned int ioctl;
2642 u32 flags;
2643 const char * const name;
2644 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2645 void *fh, void *p);
2646 void (*debug)(const void *arg, bool write_only);
2647 };
2648
2649 /* This control needs a priority check */
2650 #define INFO_FL_PRIO (1 << 0)
2651 /* This control can be valid if the filehandle passes a control handler. */
2652 #define INFO_FL_CTRL (1 << 1)
2653 /* Queuing ioctl */
2654 #define INFO_FL_QUEUE (1 << 2)
2655 /* Always copy back result, even on error */
2656 #define INFO_FL_ALWAYS_COPY (1 << 3)
2657 /* Zero struct from after the field to the end */
2658 #define INFO_FL_CLEAR(v4l2_struct, field) \
2659 ((offsetof(struct v4l2_struct, field) + \
2660 sizeof_field(struct v4l2_struct, field)) << 16)
2661 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2662
2663 #define DEFINE_V4L_STUB_FUNC(_vidioc) \
2664 static int v4l_stub_ ## _vidioc( \
2665 const struct v4l2_ioctl_ops *ops, \
2666 struct file *file, void *fh, void *p) \
2667 { \
2668 return ops->vidioc_ ## _vidioc(file, fh, p); \
2669 }
2670
2671 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2672 [_IOC_NR(_ioctl)] = { \
2673 .ioctl = _ioctl, \
2674 .flags = _flags, \
2675 .name = #_ioctl, \
2676 .func = _func, \
2677 .debug = _debug, \
2678 }
2679
2680 DEFINE_V4L_STUB_FUNC(g_fbuf)
2681 DEFINE_V4L_STUB_FUNC(s_fbuf)
2682 DEFINE_V4L_STUB_FUNC(expbuf)
2683 DEFINE_V4L_STUB_FUNC(g_std)
2684 DEFINE_V4L_STUB_FUNC(g_audio)
2685 DEFINE_V4L_STUB_FUNC(s_audio)
2686 DEFINE_V4L_STUB_FUNC(g_input)
2687 DEFINE_V4L_STUB_FUNC(g_edid)
2688 DEFINE_V4L_STUB_FUNC(s_edid)
2689 DEFINE_V4L_STUB_FUNC(g_output)
2690 DEFINE_V4L_STUB_FUNC(g_audout)
2691 DEFINE_V4L_STUB_FUNC(s_audout)
2692 DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2693 DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2694 DEFINE_V4L_STUB_FUNC(enumaudio)
2695 DEFINE_V4L_STUB_FUNC(enumaudout)
2696 DEFINE_V4L_STUB_FUNC(enum_framesizes)
2697 DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2698 DEFINE_V4L_STUB_FUNC(g_enc_index)
2699 DEFINE_V4L_STUB_FUNC(encoder_cmd)
2700 DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2701 DEFINE_V4L_STUB_FUNC(decoder_cmd)
2702 DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2703 DEFINE_V4L_STUB_FUNC(s_dv_timings)
2704 DEFINE_V4L_STUB_FUNC(g_dv_timings)
2705 DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2706 DEFINE_V4L_STUB_FUNC(query_dv_timings)
2707 DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2708
2709 static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2710 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2711 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, INFO_FL_CLEAR(v4l2_fmtdesc, type)),
2712 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2713 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2714 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2715 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2716 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2717 IOCTL_INFO(VIDIOC_S_FBUF, v4l_stub_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2718 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2719 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2720 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2721 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2722 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2723 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2724 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2725 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2726 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2727 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2728 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2729 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2730 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2731 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2732 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2733 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2734 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2735 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2736 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2737 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2738 IOCTL_INFO(VIDIOC_G_INPUT, v4l_stub_g_input, v4l_print_u32, 0),
2739 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2740 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2741 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2742 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_stub_g_output, v4l_print_u32, 0),
2743 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2744 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2745 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2746 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2747 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2748 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2749 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2750 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2751 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2752 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2753 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2754 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2755 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2756 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2757 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2758 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2759 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2760 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2761 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2762 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2763 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2764 IOCTL_INFO(VIDIOC_G_SLICED_VBI_CAP, v4l_g_sliced_vbi_cap, v4l_print_sliced_vbi_cap, INFO_FL_CLEAR(v4l2_sliced_vbi_cap, type)),
2765 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2766 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2767 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL),
2768 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL),
2769 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2770 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2771 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2772 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2773 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2774 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2775 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2776 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2777 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2778 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2779 IOCTL_INFO(VIDIOC_S_DV_TIMINGS, v4l_stub_s_dv_timings, v4l_print_dv_timings, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_dv_timings, bt.flags)),
2780 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2781 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2782 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2783 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2784 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2785 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2786 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2787 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2788 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2789 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2790 IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
2791 IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
2792 };
2793 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
2794
2795 static bool v4l2_is_known_ioctl(unsigned int cmd)
2796 {
2797 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2798 return false;
2799 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
2800 }
2801
2802 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
2803 struct v4l2_fh *vfh, unsigned int cmd,
2804 void *arg)
2805 {
2806 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
2807 return vdev->lock;
2808 #if IS_ENABLED(CONFIG_V4L2_MEM2MEM_DEV)
2809 if (vfh && vfh->m2m_ctx &&
2810 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
2811 if (vfh->m2m_ctx->q_lock)
2812 return vfh->m2m_ctx->q_lock;
2813 }
2814 #endif
2815 if (vdev->queue && vdev->queue->lock &&
2816 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
2817 return vdev->queue->lock;
2818 return vdev->lock;
2819 }
2820
2821 /* Common ioctl debug function. This function can be used by
2822 external ioctl messages as well as internal V4L ioctl */
2823 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
2824 {
2825 const char *dir, *type;
2826
2827 if (prefix)
2828 printk(KERN_DEBUG "%s: ", prefix);
2829
2830 switch (_IOC_TYPE(cmd)) {
2831 case 'd':
2832 type = "v4l2_int";
2833 break;
2834 case 'V':
2835 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
2836 type = "v4l2";
2837 break;
2838 }
2839 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
2840 return;
2841 default:
2842 type = "unknown";
2843 break;
2844 }
2845
2846 switch (_IOC_DIR(cmd)) {
2847 case _IOC_NONE: dir = "--"; break;
2848 case _IOC_READ: dir = "r-"; break;
2849 case _IOC_WRITE: dir = "-w"; break;
2850 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
2851 default: dir = "*ERR*"; break;
2852 }
2853 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
2854 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
2855 }
2856 EXPORT_SYMBOL(v4l_printk_ioctl);
2857
2858 static long __video_do_ioctl(struct file *file,
2859 unsigned int cmd, void *arg)
2860 {
2861 struct video_device *vfd = video_devdata(file);
2862 struct mutex *req_queue_lock = NULL;
2863 struct mutex *lock; /* ioctl serialization mutex */
2864 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
2865 bool write_only = false;
2866 struct v4l2_ioctl_info default_info;
2867 const struct v4l2_ioctl_info *info;
2868 void *fh = file->private_data;
2869 struct v4l2_fh *vfh = NULL;
2870 int dev_debug = vfd->dev_debug;
2871 long ret = -ENOTTY;
2872
2873 if (ops == NULL) {
2874 pr_warn("%s: has no ioctl_ops.\n",
2875 video_device_node_name(vfd));
2876 return ret;
2877 }
2878
2879 if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags))
2880 vfh = file->private_data;
2881
2882 /*
2883 * We need to serialize streamon/off with queueing new requests.
2884 * These ioctls may trigger the cancellation of a streaming
2885 * operation, and that should not be mixed with queueing a new
2886 * request at the same time.
2887 */
2888 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
2889 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF)) {
2890 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
2891
2892 if (mutex_lock_interruptible(req_queue_lock))
2893 return -ERESTARTSYS;
2894 }
2895
2896 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
2897
2898 if (lock && mutex_lock_interruptible(lock)) {
2899 if (req_queue_lock)
2900 mutex_unlock(req_queue_lock);
2901 return -ERESTARTSYS;
2902 }
2903
2904 if (!video_is_registered(vfd)) {
2905 ret = -ENODEV;
2906 goto unlock;
2907 }
2908
2909 if (v4l2_is_known_ioctl(cmd)) {
2910 info = &v4l2_ioctls[_IOC_NR(cmd)];
2911
2912 if (!test_bit(_IOC_NR(cmd), vfd->valid_ioctls) &&
2913 !((info->flags & INFO_FL_CTRL) && vfh && vfh->ctrl_handler))
2914 goto done;
2915
2916 if (vfh && (info->flags & INFO_FL_PRIO)) {
2917 ret = v4l2_prio_check(vfd->prio, vfh->prio);
2918 if (ret)
2919 goto done;
2920 }
2921 } else {
2922 default_info.ioctl = cmd;
2923 default_info.flags = 0;
2924 default_info.debug = v4l_print_default;
2925 info = &default_info;
2926 }
2927
2928 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
2929 if (info != &default_info) {
2930 ret = info->func(ops, file, fh, arg);
2931 } else if (!ops->vidioc_default) {
2932 ret = -ENOTTY;
2933 } else {
2934 ret = ops->vidioc_default(file, fh,
2935 vfh ? v4l2_prio_check(vfd->prio, vfh->prio) >= 0 : 0,
2936 cmd, arg);
2937 }
2938
2939 done:
2940 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
2941 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
2942 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
2943 goto unlock;
2944
2945 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
2946 if (ret < 0)
2947 pr_cont(": error %ld", ret);
2948 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
2949 pr_cont("\n");
2950 else if (_IOC_DIR(cmd) == _IOC_NONE)
2951 info->debug(arg, write_only);
2952 else {
2953 pr_cont(": ");
2954 info->debug(arg, write_only);
2955 }
2956 }
2957
2958 unlock:
2959 if (lock)
2960 mutex_unlock(lock);
2961 if (req_queue_lock)
2962 mutex_unlock(req_queue_lock);
2963 return ret;
2964 }
2965
2966 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
2967 void __user **user_ptr, void ***kernel_ptr)
2968 {
2969 int ret = 0;
2970
2971 switch (cmd) {
2972 case VIDIOC_PREPARE_BUF:
2973 case VIDIOC_QUERYBUF:
2974 case VIDIOC_QBUF:
2975 case VIDIOC_DQBUF: {
2976 struct v4l2_buffer *buf = parg;
2977
2978 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
2979 if (buf->length > VIDEO_MAX_PLANES) {
2980 ret = -EINVAL;
2981 break;
2982 }
2983 *user_ptr = (void __user *)buf->m.planes;
2984 *kernel_ptr = (void **)&buf->m.planes;
2985 *array_size = sizeof(struct v4l2_plane) * buf->length;
2986 ret = 1;
2987 }
2988 break;
2989 }
2990
2991 case VIDIOC_G_EDID:
2992 case VIDIOC_S_EDID: {
2993 struct v4l2_edid *edid = parg;
2994
2995 if (edid->blocks) {
2996 if (edid->blocks > 256) {
2997 ret = -EINVAL;
2998 break;
2999 }
3000 *user_ptr = (void __user *)edid->edid;
3001 *kernel_ptr = (void **)&edid->edid;
3002 *array_size = edid->blocks * 128;
3003 ret = 1;
3004 }
3005 break;
3006 }
3007
3008 case VIDIOC_S_EXT_CTRLS:
3009 case VIDIOC_G_EXT_CTRLS:
3010 case VIDIOC_TRY_EXT_CTRLS: {
3011 struct v4l2_ext_controls *ctrls = parg;
3012
3013 if (ctrls->count != 0) {
3014 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3015 ret = -EINVAL;
3016 break;
3017 }
3018 *user_ptr = (void __user *)ctrls->controls;
3019 *kernel_ptr = (void **)&ctrls->controls;
3020 *array_size = sizeof(struct v4l2_ext_control)
3021 * ctrls->count;
3022 ret = 1;
3023 }
3024 break;
3025 }
3026 }
3027
3028 return ret;
3029 }
3030
3031 static unsigned int video_translate_cmd(unsigned int cmd)
3032 {
3033 switch (cmd) {
3034 #ifdef CONFIG_COMPAT_32BIT_TIME
3035 case VIDIOC_DQEVENT_TIME32:
3036 return VIDIOC_DQEVENT;
3037 case VIDIOC_QUERYBUF_TIME32:
3038 return VIDIOC_QUERYBUF;
3039 case VIDIOC_QBUF_TIME32:
3040 return VIDIOC_QBUF;
3041 case VIDIOC_DQBUF_TIME32:
3042 return VIDIOC_DQBUF;
3043 case VIDIOC_PREPARE_BUF_TIME32:
3044 return VIDIOC_PREPARE_BUF;
3045 #endif
3046 }
3047
3048 return cmd;
3049 }
3050
3051 static int video_get_user(void __user *arg, void *parg, unsigned int cmd,
3052 bool *always_copy)
3053 {
3054 unsigned int n = _IOC_SIZE(cmd);
3055
3056 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3057 /* read-only ioctl */
3058 memset(parg, 0, n);
3059 return 0;
3060 }
3061
3062 switch (cmd) {
3063 #ifdef CONFIG_COMPAT_32BIT_TIME
3064 case VIDIOC_QUERYBUF_TIME32:
3065 case VIDIOC_QBUF_TIME32:
3066 case VIDIOC_DQBUF_TIME32:
3067 case VIDIOC_PREPARE_BUF_TIME32: {
3068 struct v4l2_buffer_time32 vb32;
3069 struct v4l2_buffer *vb = parg;
3070
3071 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3072 return -EFAULT;
3073
3074 *vb = (struct v4l2_buffer) {
3075 .index = vb32.index,
3076 .type = vb32.type,
3077 .bytesused = vb32.bytesused,
3078 .flags = vb32.flags,
3079 .field = vb32.field,
3080 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3081 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3082 .timecode = vb32.timecode,
3083 .sequence = vb32.sequence,
3084 .memory = vb32.memory,
3085 .m.userptr = vb32.m.userptr,
3086 .length = vb32.length,
3087 .request_fd = vb32.request_fd,
3088 };
3089
3090 if (cmd == VIDIOC_QUERYBUF_TIME32)
3091 vb->request_fd = 0;
3092
3093 break;
3094 }
3095 #endif
3096 default:
3097 /*
3098 * In some cases, only a few fields are used as input,
3099 * i.e. when the app sets "index" and then the driver
3100 * fills in the rest of the structure for the thing
3101 * with that index. We only need to copy up the first
3102 * non-input field.
3103 */
3104 if (v4l2_is_known_ioctl(cmd)) {
3105 u32 flags = v4l2_ioctls[_IOC_NR(cmd)].flags;
3106
3107 if (flags & INFO_FL_CLEAR_MASK)
3108 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3109 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3110 }
3111
3112 if (copy_from_user(parg, (void __user *)arg, n))
3113 return -EFAULT;
3114
3115 /* zero out anything we don't copy from userspace */
3116 if (n < _IOC_SIZE(cmd))
3117 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
3118 break;
3119 }
3120
3121 return 0;
3122 }
3123
3124 static int video_put_user(void __user *arg, void *parg, unsigned int cmd)
3125 {
3126 if (!(_IOC_DIR(cmd) & _IOC_READ))
3127 return 0;
3128
3129 switch (cmd) {
3130 #ifdef CONFIG_COMPAT_32BIT_TIME
3131 case VIDIOC_DQEVENT_TIME32: {
3132 struct v4l2_event *ev = parg;
3133 struct v4l2_event_time32 ev32 = {
3134 .type = ev->type,
3135 .pending = ev->pending,
3136 .sequence = ev->sequence,
3137 .timestamp.tv_sec = ev->timestamp.tv_sec,
3138 .timestamp.tv_nsec = ev->timestamp.tv_nsec,
3139 .id = ev->id,
3140 };
3141
3142 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3143 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3144
3145 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3146 return -EFAULT;
3147 break;
3148 }
3149 case VIDIOC_QUERYBUF_TIME32:
3150 case VIDIOC_QBUF_TIME32:
3151 case VIDIOC_DQBUF_TIME32:
3152 case VIDIOC_PREPARE_BUF_TIME32: {
3153 struct v4l2_buffer *vb = parg;
3154 struct v4l2_buffer_time32 vb32 = {
3155 .index = vb->index,
3156 .type = vb->type,
3157 .bytesused = vb->bytesused,
3158 .flags = vb->flags,
3159 .field = vb->field,
3160 .timestamp.tv_sec = vb->timestamp.tv_sec,
3161 .timestamp.tv_usec = vb->timestamp.tv_usec,
3162 .timecode = vb->timecode,
3163 .sequence = vb->sequence,
3164 .memory = vb->memory,
3165 .m.userptr = vb->m.userptr,
3166 .length = vb->length,
3167 .request_fd = vb->request_fd,
3168 };
3169
3170 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3171 return -EFAULT;
3172 break;
3173 }
3174 #endif
3175 default:
3176 /* Copy results into user buffer */
3177 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3178 return -EFAULT;
3179 break;
3180 }
3181
3182 return 0;
3183 }
3184
3185 long
3186 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3187 v4l2_kioctl func)
3188 {
3189 char sbuf[128];
3190 void *mbuf = NULL;
3191 void *parg = (void *)arg;
3192 long err = -EINVAL;
3193 bool has_array_args;
3194 bool always_copy = false;
3195 size_t array_size = 0;
3196 void __user *user_ptr = NULL;
3197 void **kernel_ptr = NULL;
3198 unsigned int cmd = video_translate_cmd(orig_cmd);
3199 const size_t ioc_size = _IOC_SIZE(cmd);
3200
3201 /* Copy arguments into temp kernel buffer */
3202 if (_IOC_DIR(cmd) != _IOC_NONE) {
3203 if (ioc_size <= sizeof(sbuf)) {
3204 parg = sbuf;
3205 } else {
3206 /* too big to allocate from stack */
3207 mbuf = kvmalloc(ioc_size, GFP_KERNEL);
3208 if (NULL == mbuf)
3209 return -ENOMEM;
3210 parg = mbuf;
3211 }
3212
3213 err = video_get_user((void __user *)arg, parg, orig_cmd,
3214 &always_copy);
3215 if (err)
3216 goto out;
3217 }
3218
3219 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3220 if (err < 0)
3221 goto out;
3222 has_array_args = err;
3223
3224 if (has_array_args) {
3225 /*
3226 * When adding new types of array args, make sure that the
3227 * parent argument to ioctl (which contains the pointer to the
3228 * array) fits into sbuf (so that mbuf will still remain
3229 * unused up to here).
3230 */
3231 mbuf = kvmalloc(array_size, GFP_KERNEL);
3232 err = -ENOMEM;
3233 if (NULL == mbuf)
3234 goto out_array_args;
3235 err = -EFAULT;
3236 if (copy_from_user(mbuf, user_ptr, array_size))
3237 goto out_array_args;
3238 *kernel_ptr = mbuf;
3239 }
3240
3241 /* Handles IOCTL */
3242 err = func(file, cmd, parg);
3243 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3244 err = -ENOTTY;
3245 goto out;
3246 }
3247
3248 if (err == 0) {
3249 if (cmd == VIDIOC_DQBUF)
3250 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3251 else if (cmd == VIDIOC_QBUF)
3252 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3253 }
3254
3255 if (has_array_args) {
3256 *kernel_ptr = (void __force *)user_ptr;
3257 if (copy_to_user(user_ptr, mbuf, array_size))
3258 err = -EFAULT;
3259 goto out_array_args;
3260 }
3261 /*
3262 * Some ioctls can return an error, but still have valid
3263 * results that must be returned.
3264 */
3265 if (err < 0 && !always_copy)
3266 goto out;
3267
3268 out_array_args:
3269 if (video_put_user((void __user *)arg, parg, orig_cmd))
3270 err = -EFAULT;
3271 out:
3272 kvfree(mbuf);
3273 return err;
3274 }
3275
3276 long video_ioctl2(struct file *file,
3277 unsigned int cmd, unsigned long arg)
3278 {
3279 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3280 }
3281 EXPORT_SYMBOL(video_ioctl2);
Linux with added FPC-III support