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/compat.h>
12 #include <linux/mm.h>
13 #include <linux/module.h>
14 #include <linux/slab.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/version.h>
18
19 #include <linux/v4l2-subdev.h>
20 #include <linux/videodev2.h>
21
22 #include <media/media-device.h> /* for media_set_bus_info() */
23 #include <media/v4l2-common.h>
24 #include <media/v4l2-ioctl.h>
25 #include <media/v4l2-ctrls.h>
26 #include <media/v4l2-fh.h>
27 #include <media/v4l2-event.h>
28 #include <media/v4l2-device.h>
29 #include <media/videobuf2-v4l2.h>
30 #include <media/v4l2-mc.h>
31 #include <media/v4l2-mem2mem.h>
32
33 #include <trace/events/v4l2.h>
34
35 #define is_valid_ioctl(vfd, cmd) test_bit(_IOC_NR(cmd), (vfd)->valid_ioctls)
36
37 struct std_descr {
38 v4l2_std_id std;
39 const char *descr;
40 };
41
42 static const struct std_descr standards[] = {
43 { V4L2_STD_NTSC, "NTSC" },
44 { V4L2_STD_NTSC_M, "NTSC-M" },
45 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
46 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
47 { V4L2_STD_NTSC_443, "NTSC-443" },
48 { V4L2_STD_PAL, "PAL" },
49 { V4L2_STD_PAL_BG, "PAL-BG" },
50 { V4L2_STD_PAL_B, "PAL-B" },
51 { V4L2_STD_PAL_B1, "PAL-B1" },
52 { V4L2_STD_PAL_G, "PAL-G" },
53 { V4L2_STD_PAL_H, "PAL-H" },
54 { V4L2_STD_PAL_I, "PAL-I" },
55 { V4L2_STD_PAL_DK, "PAL-DK" },
56 { V4L2_STD_PAL_D, "PAL-D" },
57 { V4L2_STD_PAL_D1, "PAL-D1" },
58 { V4L2_STD_PAL_K, "PAL-K" },
59 { V4L2_STD_PAL_M, "PAL-M" },
60 { V4L2_STD_PAL_N, "PAL-N" },
61 { V4L2_STD_PAL_Nc, "PAL-Nc" },
62 { V4L2_STD_PAL_60, "PAL-60" },
63 { V4L2_STD_SECAM, "SECAM" },
64 { V4L2_STD_SECAM_B, "SECAM-B" },
65 { V4L2_STD_SECAM_G, "SECAM-G" },
66 { V4L2_STD_SECAM_H, "SECAM-H" },
67 { V4L2_STD_SECAM_DK, "SECAM-DK" },
68 { V4L2_STD_SECAM_D, "SECAM-D" },
69 { V4L2_STD_SECAM_K, "SECAM-K" },
70 { V4L2_STD_SECAM_K1, "SECAM-K1" },
71 { V4L2_STD_SECAM_L, "SECAM-L" },
72 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
73 { 0, "Unknown" }
74 };
75
76 /* video4linux standard ID conversion to standard name
77 */
v4l2_norm_to_name(v4l2_std_id id)78 const char *v4l2_norm_to_name(v4l2_std_id id)
79 {
80 u32 myid = id;
81 int i;
82
83 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
84 64 bit comparisons. So, on that architecture, with some gcc
85 variants, compilation fails. Currently, the max value is 30bit wide.
86 */
87 BUG_ON(myid != id);
88
89 for (i = 0; standards[i].std; i++)
90 if (myid == standards[i].std)
91 break;
92 return standards[i].descr;
93 }
94 EXPORT_SYMBOL(v4l2_norm_to_name);
95
96 /* Returns frame period for the given standard */
v4l2_video_std_frame_period(int id,struct v4l2_fract * frameperiod)97 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod)
98 {
99 if (id & V4L2_STD_525_60) {
100 frameperiod->numerator = 1001;
101 frameperiod->denominator = 30000;
102 } else {
103 frameperiod->numerator = 1;
104 frameperiod->denominator = 25;
105 }
106 }
107 EXPORT_SYMBOL(v4l2_video_std_frame_period);
108
109 /* Fill in the fields of a v4l2_standard structure according to the
110 'id' and 'transmission' parameters. Returns negative on error. */
v4l2_video_std_construct(struct v4l2_standard * vs,int id,const char * name)111 int v4l2_video_std_construct(struct v4l2_standard *vs,
112 int id, const char *name)
113 {
114 vs->id = id;
115 v4l2_video_std_frame_period(id, &vs->frameperiod);
116 vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625;
117 strscpy(vs->name, name, sizeof(vs->name));
118 return 0;
119 }
120 EXPORT_SYMBOL(v4l2_video_std_construct);
121
122 /* Fill in the fields of a v4l2_standard structure according to the
123 * 'id' and 'vs->index' parameters. Returns negative on error. */
v4l_video_std_enumstd(struct v4l2_standard * vs,v4l2_std_id id)124 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id)
125 {
126 v4l2_std_id curr_id = 0;
127 unsigned int index = vs->index, i, j = 0;
128 const char *descr = "";
129
130 /* Return -ENODATA if the id for the current input
131 or output is 0, meaning that it doesn't support this API. */
132 if (id == 0)
133 return -ENODATA;
134
135 /* Return norm array in a canonical way */
136 for (i = 0; i <= index && id; i++) {
137 /* last std value in the standards array is 0, so this
138 while always ends there since (id & 0) == 0. */
139 while ((id & standards[j].std) != standards[j].std)
140 j++;
141 curr_id = standards[j].std;
142 descr = standards[j].descr;
143 j++;
144 if (curr_id == 0)
145 break;
146 if (curr_id != V4L2_STD_PAL &&
147 curr_id != V4L2_STD_SECAM &&
148 curr_id != V4L2_STD_NTSC)
149 id &= ~curr_id;
150 }
151 if (i <= index)
152 return -EINVAL;
153
154 v4l2_video_std_construct(vs, curr_id, descr);
155 return 0;
156 }
157
158 /* ----------------------------------------------------------------- */
159 /* some arrays for pretty-printing debug messages of enum types */
160
161 const char *v4l2_field_names[] = {
162 [V4L2_FIELD_ANY] = "any",
163 [V4L2_FIELD_NONE] = "none",
164 [V4L2_FIELD_TOP] = "top",
165 [V4L2_FIELD_BOTTOM] = "bottom",
166 [V4L2_FIELD_INTERLACED] = "interlaced",
167 [V4L2_FIELD_SEQ_TB] = "seq-tb",
168 [V4L2_FIELD_SEQ_BT] = "seq-bt",
169 [V4L2_FIELD_ALTERNATE] = "alternate",
170 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
171 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
172 };
173 EXPORT_SYMBOL(v4l2_field_names);
174
175 const char *v4l2_type_names[] = {
176 [0] = "0",
177 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
178 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
179 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
180 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
181 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
182 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
183 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
184 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
185 [V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE] = "vid-cap-mplane",
186 [V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE] = "vid-out-mplane",
187 [V4L2_BUF_TYPE_SDR_CAPTURE] = "sdr-cap",
188 [V4L2_BUF_TYPE_SDR_OUTPUT] = "sdr-out",
189 [V4L2_BUF_TYPE_META_CAPTURE] = "meta-cap",
190 [V4L2_BUF_TYPE_META_OUTPUT] = "meta-out",
191 };
192 EXPORT_SYMBOL(v4l2_type_names);
193
194 static const char *v4l2_memory_names[] = {
195 [V4L2_MEMORY_MMAP] = "mmap",
196 [V4L2_MEMORY_USERPTR] = "userptr",
197 [V4L2_MEMORY_OVERLAY] = "overlay",
198 [V4L2_MEMORY_DMABUF] = "dmabuf",
199 };
200
201 #define prt_names(a, arr) (((unsigned)(a)) < ARRAY_SIZE(arr) ? arr[a] : "unknown")
202
203 /* ------------------------------------------------------------------ */
204 /* debug help functions */
205
v4l_print_querycap(const void * arg,bool write_only)206 static void v4l_print_querycap(const void *arg, bool write_only)
207 {
208 const struct v4l2_capability *p = arg;
209
210 pr_cont("driver=%.*s, card=%.*s, bus=%.*s, version=0x%08x, capabilities=0x%08x, device_caps=0x%08x\n",
211 (int)sizeof(p->driver), p->driver,
212 (int)sizeof(p->card), p->card,
213 (int)sizeof(p->bus_info), p->bus_info,
214 p->version, p->capabilities, p->device_caps);
215 }
216
v4l_print_enuminput(const void * arg,bool write_only)217 static void v4l_print_enuminput(const void *arg, bool write_only)
218 {
219 const struct v4l2_input *p = arg;
220
221 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, tuner=%u, std=0x%08Lx, status=0x%x, capabilities=0x%x\n",
222 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
223 p->tuner, (unsigned long long)p->std, p->status,
224 p->capabilities);
225 }
226
v4l_print_enumoutput(const void * arg,bool write_only)227 static void v4l_print_enumoutput(const void *arg, bool write_only)
228 {
229 const struct v4l2_output *p = arg;
230
231 pr_cont("index=%u, name=%.*s, type=%u, audioset=0x%x, modulator=%u, std=0x%08Lx, capabilities=0x%x\n",
232 p->index, (int)sizeof(p->name), p->name, p->type, p->audioset,
233 p->modulator, (unsigned long long)p->std, p->capabilities);
234 }
235
v4l_print_audio(const void * arg,bool write_only)236 static void v4l_print_audio(const void *arg, bool write_only)
237 {
238 const struct v4l2_audio *p = arg;
239
240 if (write_only)
241 pr_cont("index=%u, mode=0x%x\n", p->index, p->mode);
242 else
243 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
244 p->index, (int)sizeof(p->name), p->name,
245 p->capability, p->mode);
246 }
247
v4l_print_audioout(const void * arg,bool write_only)248 static void v4l_print_audioout(const void *arg, bool write_only)
249 {
250 const struct v4l2_audioout *p = arg;
251
252 if (write_only)
253 pr_cont("index=%u\n", p->index);
254 else
255 pr_cont("index=%u, name=%.*s, capability=0x%x, mode=0x%x\n",
256 p->index, (int)sizeof(p->name), p->name,
257 p->capability, p->mode);
258 }
259
v4l_print_fmtdesc(const void * arg,bool write_only)260 static void v4l_print_fmtdesc(const void *arg, bool write_only)
261 {
262 const struct v4l2_fmtdesc *p = arg;
263
264 pr_cont("index=%u, type=%s, flags=0x%x, pixelformat=%p4cc, mbus_code=0x%04x, description='%.*s'\n",
265 p->index, prt_names(p->type, v4l2_type_names),
266 p->flags, &p->pixelformat, p->mbus_code,
267 (int)sizeof(p->description), p->description);
268 }
269
v4l_print_format(const void * arg,bool write_only)270 static void v4l_print_format(const void *arg, bool write_only)
271 {
272 const struct v4l2_format *p = arg;
273 const struct v4l2_pix_format *pix;
274 const struct v4l2_pix_format_mplane *mp;
275 const struct v4l2_vbi_format *vbi;
276 const struct v4l2_sliced_vbi_format *sliced;
277 const struct v4l2_window *win;
278 const struct v4l2_meta_format *meta;
279 u32 pixelformat;
280 u32 planes;
281 unsigned i;
282
283 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
284 switch (p->type) {
285 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
286 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
287 pix = &p->fmt.pix;
288 pr_cont(", width=%u, height=%u, pixelformat=%p4cc, field=%s, bytesperline=%u, sizeimage=%u, colorspace=%d, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
289 pix->width, pix->height, &pix->pixelformat,
290 prt_names(pix->field, v4l2_field_names),
291 pix->bytesperline, pix->sizeimage,
292 pix->colorspace, pix->flags, pix->ycbcr_enc,
293 pix->quantization, pix->xfer_func);
294 break;
295 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
296 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
297 mp = &p->fmt.pix_mp;
298 pixelformat = mp->pixelformat;
299 pr_cont(", width=%u, height=%u, format=%p4cc, field=%s, colorspace=%d, num_planes=%u, flags=0x%x, ycbcr_enc=%u, quantization=%u, xfer_func=%u\n",
300 mp->width, mp->height, &pixelformat,
301 prt_names(mp->field, v4l2_field_names),
302 mp->colorspace, mp->num_planes, mp->flags,
303 mp->ycbcr_enc, mp->quantization, mp->xfer_func);
304 planes = min_t(u32, mp->num_planes, VIDEO_MAX_PLANES);
305 for (i = 0; i < planes; i++)
306 printk(KERN_DEBUG "plane %u: bytesperline=%u sizeimage=%u\n", i,
307 mp->plane_fmt[i].bytesperline,
308 mp->plane_fmt[i].sizeimage);
309 break;
310 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
311 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
312 win = &p->fmt.win;
313 pr_cont(", (%d,%d)/%ux%u, field=%s, chromakey=0x%08x, global_alpha=0x%02x\n",
314 win->w.left, win->w.top, win->w.width, win->w.height,
315 prt_names(win->field, v4l2_field_names),
316 win->chromakey, win->global_alpha);
317 break;
318 case V4L2_BUF_TYPE_VBI_CAPTURE:
319 case V4L2_BUF_TYPE_VBI_OUTPUT:
320 vbi = &p->fmt.vbi;
321 pr_cont(", sampling_rate=%u, offset=%u, samples_per_line=%u, sample_format=%p4cc, start=%u,%u, count=%u,%u\n",
322 vbi->sampling_rate, vbi->offset,
323 vbi->samples_per_line, &vbi->sample_format,
324 vbi->start[0], vbi->start[1],
325 vbi->count[0], vbi->count[1]);
326 break;
327 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
328 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
329 sliced = &p->fmt.sliced;
330 pr_cont(", service_set=0x%08x, io_size=%d\n",
331 sliced->service_set, sliced->io_size);
332 for (i = 0; i < 24; i++)
333 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
334 sliced->service_lines[0][i],
335 sliced->service_lines[1][i]);
336 break;
337 case V4L2_BUF_TYPE_SDR_CAPTURE:
338 case V4L2_BUF_TYPE_SDR_OUTPUT:
339 pixelformat = p->fmt.sdr.pixelformat;
340 pr_cont(", pixelformat=%p4cc\n", &pixelformat);
341 break;
342 case V4L2_BUF_TYPE_META_CAPTURE:
343 case V4L2_BUF_TYPE_META_OUTPUT:
344 meta = &p->fmt.meta;
345 pixelformat = meta->dataformat;
346 pr_cont(", dataformat=%p4cc, buffersize=%u, width=%u, height=%u, bytesperline=%u\n",
347 &pixelformat, meta->buffersize, meta->width,
348 meta->height, meta->bytesperline);
349 break;
350 }
351 }
352
v4l_print_framebuffer(const void * arg,bool write_only)353 static void v4l_print_framebuffer(const void *arg, bool write_only)
354 {
355 const struct v4l2_framebuffer *p = arg;
356
357 pr_cont("capability=0x%x, flags=0x%x, base=0x%p, width=%u, height=%u, pixelformat=%p4cc, bytesperline=%u, sizeimage=%u, colorspace=%d\n",
358 p->capability, p->flags, p->base, p->fmt.width, p->fmt.height,
359 &p->fmt.pixelformat, p->fmt.bytesperline, p->fmt.sizeimage,
360 p->fmt.colorspace);
361 }
362
v4l_print_buftype(const void * arg,bool write_only)363 static void v4l_print_buftype(const void *arg, bool write_only)
364 {
365 pr_cont("type=%s\n", prt_names(*(u32 *)arg, v4l2_type_names));
366 }
367
v4l_print_modulator(const void * arg,bool write_only)368 static void v4l_print_modulator(const void *arg, bool write_only)
369 {
370 const struct v4l2_modulator *p = arg;
371
372 if (write_only)
373 pr_cont("index=%u, txsubchans=0x%x\n", p->index, p->txsubchans);
374 else
375 pr_cont("index=%u, name=%.*s, capability=0x%x, rangelow=%u, rangehigh=%u, txsubchans=0x%x\n",
376 p->index, (int)sizeof(p->name), p->name, p->capability,
377 p->rangelow, p->rangehigh, p->txsubchans);
378 }
379
v4l_print_tuner(const void * arg,bool write_only)380 static void v4l_print_tuner(const void *arg, bool write_only)
381 {
382 const struct v4l2_tuner *p = arg;
383
384 if (write_only)
385 pr_cont("index=%u, audmode=%u\n", p->index, p->audmode);
386 else
387 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",
388 p->index, (int)sizeof(p->name), p->name, p->type,
389 p->capability, p->rangelow,
390 p->rangehigh, p->signal, p->afc,
391 p->rxsubchans, p->audmode);
392 }
393
v4l_print_frequency(const void * arg,bool write_only)394 static void v4l_print_frequency(const void *arg, bool write_only)
395 {
396 const struct v4l2_frequency *p = arg;
397
398 pr_cont("tuner=%u, type=%u, frequency=%u\n",
399 p->tuner, p->type, p->frequency);
400 }
401
v4l_print_standard(const void * arg,bool write_only)402 static void v4l_print_standard(const void *arg, bool write_only)
403 {
404 const struct v4l2_standard *p = arg;
405
406 pr_cont("index=%u, id=0x%Lx, name=%.*s, fps=%u/%u, framelines=%u\n",
407 p->index,
408 (unsigned long long)p->id, (int)sizeof(p->name), p->name,
409 p->frameperiod.numerator,
410 p->frameperiod.denominator,
411 p->framelines);
412 }
413
v4l_print_std(const void * arg,bool write_only)414 static void v4l_print_std(const void *arg, bool write_only)
415 {
416 pr_cont("std=0x%08Lx\n", *(const long long unsigned *)arg);
417 }
418
v4l_print_hw_freq_seek(const void * arg,bool write_only)419 static void v4l_print_hw_freq_seek(const void *arg, bool write_only)
420 {
421 const struct v4l2_hw_freq_seek *p = arg;
422
423 pr_cont("tuner=%u, type=%u, seek_upward=%u, wrap_around=%u, spacing=%u, rangelow=%u, rangehigh=%u\n",
424 p->tuner, p->type, p->seek_upward, p->wrap_around, p->spacing,
425 p->rangelow, p->rangehigh);
426 }
427
v4l_print_requestbuffers(const void * arg,bool write_only)428 static void v4l_print_requestbuffers(const void *arg, bool write_only)
429 {
430 const struct v4l2_requestbuffers *p = arg;
431
432 pr_cont("count=%d, type=%s, memory=%s\n",
433 p->count,
434 prt_names(p->type, v4l2_type_names),
435 prt_names(p->memory, v4l2_memory_names));
436 }
437
v4l_print_buffer(const void * arg,bool write_only)438 static void v4l_print_buffer(const void *arg, bool write_only)
439 {
440 const struct v4l2_buffer *p = arg;
441 const struct v4l2_timecode *tc = &p->timecode;
442 const struct v4l2_plane *plane;
443 int i;
444
445 pr_cont("%02d:%02d:%02d.%06ld index=%d, type=%s, request_fd=%d, flags=0x%08x, field=%s, sequence=%d, memory=%s",
446 (int)p->timestamp.tv_sec / 3600,
447 ((int)p->timestamp.tv_sec / 60) % 60,
448 ((int)p->timestamp.tv_sec % 60),
449 (long)p->timestamp.tv_usec,
450 p->index,
451 prt_names(p->type, v4l2_type_names), p->request_fd,
452 p->flags, prt_names(p->field, v4l2_field_names),
453 p->sequence, prt_names(p->memory, v4l2_memory_names));
454
455 if (V4L2_TYPE_IS_MULTIPLANAR(p->type) && p->m.planes) {
456 pr_cont("\n");
457 for (i = 0; i < p->length; ++i) {
458 plane = &p->m.planes[i];
459 printk(KERN_DEBUG
460 "plane %d: bytesused=%d, data_offset=0x%08x, offset/userptr=0x%lx, length=%d\n",
461 i, plane->bytesused, plane->data_offset,
462 plane->m.userptr, plane->length);
463 }
464 } else {
465 pr_cont(", bytesused=%d, offset/userptr=0x%lx, length=%d\n",
466 p->bytesused, p->m.userptr, p->length);
467 }
468
469 printk(KERN_DEBUG "timecode=%02d:%02d:%02d type=%d, flags=0x%08x, frames=%d, userbits=0x%08x\n",
470 tc->hours, tc->minutes, tc->seconds,
471 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
472 }
473
v4l_print_exportbuffer(const void * arg,bool write_only)474 static void v4l_print_exportbuffer(const void *arg, bool write_only)
475 {
476 const struct v4l2_exportbuffer *p = arg;
477
478 pr_cont("fd=%d, type=%s, index=%u, plane=%u, flags=0x%08x\n",
479 p->fd, prt_names(p->type, v4l2_type_names),
480 p->index, p->plane, p->flags);
481 }
482
v4l_print_create_buffers(const void * arg,bool write_only)483 static void v4l_print_create_buffers(const void *arg, bool write_only)
484 {
485 const struct v4l2_create_buffers *p = arg;
486
487 pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u, ",
488 p->index, p->count, prt_names(p->memory, v4l2_memory_names),
489 p->capabilities, p->max_num_buffers);
490 v4l_print_format(&p->format, write_only);
491 }
492
v4l_print_remove_buffers(const void * arg,bool write_only)493 static void v4l_print_remove_buffers(const void *arg, bool write_only)
494 {
495 const struct v4l2_remove_buffers *p = arg;
496
497 pr_cont("type=%s, index=%u, count=%u\n",
498 prt_names(p->type, v4l2_type_names), p->index, p->count);
499 }
500
v4l_print_streamparm(const void * arg,bool write_only)501 static void v4l_print_streamparm(const void *arg, bool write_only)
502 {
503 const struct v4l2_streamparm *p = arg;
504
505 pr_cont("type=%s", prt_names(p->type, v4l2_type_names));
506
507 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
508 p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
509 const struct v4l2_captureparm *c = &p->parm.capture;
510
511 pr_cont(", capability=0x%x, capturemode=0x%x, timeperframe=%d/%d, extendedmode=%d, readbuffers=%d\n",
512 c->capability, c->capturemode,
513 c->timeperframe.numerator, c->timeperframe.denominator,
514 c->extendedmode, c->readbuffers);
515 } else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
516 p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
517 const struct v4l2_outputparm *c = &p->parm.output;
518
519 pr_cont(", capability=0x%x, outputmode=0x%x, timeperframe=%d/%d, extendedmode=%d, writebuffers=%d\n",
520 c->capability, c->outputmode,
521 c->timeperframe.numerator, c->timeperframe.denominator,
522 c->extendedmode, c->writebuffers);
523 } else {
524 pr_cont("\n");
525 }
526 }
527
v4l_print_queryctrl(const void * arg,bool write_only)528 static void v4l_print_queryctrl(const void *arg, bool write_only)
529 {
530 const struct v4l2_queryctrl *p = arg;
531
532 pr_cont("id=0x%x, type=%d, name=%.*s, min/max=%d/%d, step=%d, default=%d, flags=0x%08x\n",
533 p->id, p->type, (int)sizeof(p->name), p->name,
534 p->minimum, p->maximum,
535 p->step, p->default_value, p->flags);
536 }
537
v4l_print_query_ext_ctrl(const void * arg,bool write_only)538 static void v4l_print_query_ext_ctrl(const void *arg, bool write_only)
539 {
540 const struct v4l2_query_ext_ctrl *p = arg;
541
542 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",
543 p->id, p->type, (int)sizeof(p->name), p->name,
544 p->minimum, p->maximum,
545 p->step, p->default_value, p->flags,
546 p->elem_size, p->elems, p->nr_of_dims,
547 p->dims[0], p->dims[1], p->dims[2], p->dims[3]);
548 }
549
v4l_print_querymenu(const void * arg,bool write_only)550 static void v4l_print_querymenu(const void *arg, bool write_only)
551 {
552 const struct v4l2_querymenu *p = arg;
553
554 pr_cont("id=0x%x, index=%d\n", p->id, p->index);
555 }
556
v4l_print_control(const void * arg,bool write_only)557 static void v4l_print_control(const void *arg, bool write_only)
558 {
559 const struct v4l2_control *p = arg;
560 const char *name = v4l2_ctrl_get_name(p->id);
561
562 if (name)
563 pr_cont("name=%s, ", name);
564 pr_cont("id=0x%x, value=%d\n", p->id, p->value);
565 }
566
v4l_print_ext_controls(const void * arg,bool write_only)567 static void v4l_print_ext_controls(const void *arg, bool write_only)
568 {
569 const struct v4l2_ext_controls *p = arg;
570 int i;
571
572 pr_cont("which=0x%x, count=%d, error_idx=%d, request_fd=%d",
573 p->which, p->count, p->error_idx, p->request_fd);
574 for (i = 0; i < p->count; i++) {
575 unsigned int id = p->controls[i].id;
576 const char *name = v4l2_ctrl_get_name(id);
577
578 if (name)
579 pr_cont(", name=%s", name);
580 if (!p->controls[i].size)
581 pr_cont(", id/val=0x%x/0x%x", id, p->controls[i].value);
582 else
583 pr_cont(", id/size=0x%x/%u", id, p->controls[i].size);
584 }
585 pr_cont("\n");
586 }
587
v4l_print_cropcap(const void * arg,bool write_only)588 static void v4l_print_cropcap(const void *arg, bool write_only)
589 {
590 const struct v4l2_cropcap *p = arg;
591
592 pr_cont("type=%s, bounds (%d,%d)/%ux%u, defrect (%d,%d)/%ux%u, pixelaspect %d/%d\n",
593 prt_names(p->type, v4l2_type_names),
594 p->bounds.left, p->bounds.top,
595 p->bounds.width, p->bounds.height,
596 p->defrect.left, p->defrect.top,
597 p->defrect.width, p->defrect.height,
598 p->pixelaspect.numerator, p->pixelaspect.denominator);
599 }
600
v4l_print_crop(const void * arg,bool write_only)601 static void v4l_print_crop(const void *arg, bool write_only)
602 {
603 const struct v4l2_crop *p = arg;
604
605 pr_cont("type=%s, crop=(%d,%d)/%ux%u\n",
606 prt_names(p->type, v4l2_type_names),
607 p->c.left, p->c.top,
608 p->c.width, p->c.height);
609 }
610
v4l_print_selection(const void * arg,bool write_only)611 static void v4l_print_selection(const void *arg, bool write_only)
612 {
613 const struct v4l2_selection *p = arg;
614
615 pr_cont("type=%s, target=%d, flags=0x%x, rect=(%d,%d)/%ux%u\n",
616 prt_names(p->type, v4l2_type_names),
617 p->target, p->flags,
618 p->r.left, p->r.top, p->r.width, p->r.height);
619 }
620
v4l_print_jpegcompression(const void * arg,bool write_only)621 static void v4l_print_jpegcompression(const void *arg, bool write_only)
622 {
623 const struct v4l2_jpegcompression *p = arg;
624
625 pr_cont("quality=%d, APPn=%d, APP_len=%d, COM_len=%d, jpeg_markers=0x%x\n",
626 p->quality, p->APPn, p->APP_len,
627 p->COM_len, p->jpeg_markers);
628 }
629
v4l_print_enc_idx(const void * arg,bool write_only)630 static void v4l_print_enc_idx(const void *arg, bool write_only)
631 {
632 const struct v4l2_enc_idx *p = arg;
633
634 pr_cont("entries=%d, entries_cap=%d\n",
635 p->entries, p->entries_cap);
636 }
637
v4l_print_encoder_cmd(const void * arg,bool write_only)638 static void v4l_print_encoder_cmd(const void *arg, bool write_only)
639 {
640 const struct v4l2_encoder_cmd *p = arg;
641
642 pr_cont("cmd=%d, flags=0x%x\n",
643 p->cmd, p->flags);
644 }
645
v4l_print_decoder_cmd(const void * arg,bool write_only)646 static void v4l_print_decoder_cmd(const void *arg, bool write_only)
647 {
648 const struct v4l2_decoder_cmd *p = arg;
649
650 pr_cont("cmd=%d, flags=0x%x\n", p->cmd, p->flags);
651
652 if (p->cmd == V4L2_DEC_CMD_START)
653 pr_info("speed=%d, format=%u\n",
654 p->start.speed, p->start.format);
655 else if (p->cmd == V4L2_DEC_CMD_STOP)
656 pr_info("pts=%llu\n", p->stop.pts);
657 }
658
v4l_print_dbg_chip_info(const void * arg,bool write_only)659 static void v4l_print_dbg_chip_info(const void *arg, bool write_only)
660 {
661 const struct v4l2_dbg_chip_info *p = arg;
662
663 pr_cont("type=%u, ", p->match.type);
664 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
665 pr_cont("name=%.*s, ",
666 (int)sizeof(p->match.name), p->match.name);
667 else
668 pr_cont("addr=%u, ", p->match.addr);
669 pr_cont("name=%.*s\n", (int)sizeof(p->name), p->name);
670 }
671
v4l_print_dbg_register(const void * arg,bool write_only)672 static void v4l_print_dbg_register(const void *arg, bool write_only)
673 {
674 const struct v4l2_dbg_register *p = arg;
675
676 pr_cont("type=%u, ", p->match.type);
677 if (p->match.type == V4L2_CHIP_MATCH_I2C_DRIVER)
678 pr_cont("name=%.*s, ",
679 (int)sizeof(p->match.name), p->match.name);
680 else
681 pr_cont("addr=%u, ", p->match.addr);
682 pr_cont("reg=0x%llx, val=0x%llx\n",
683 p->reg, p->val);
684 }
685
v4l_print_dv_timings(const void * arg,bool write_only)686 static void v4l_print_dv_timings(const void *arg, bool write_only)
687 {
688 const struct v4l2_dv_timings *p = arg;
689
690 switch (p->type) {
691 case V4L2_DV_BT_656_1120:
692 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",
693 p->bt.interlaced, p->bt.pixelclock,
694 p->bt.width, p->bt.height,
695 p->bt.polarities, p->bt.hfrontporch,
696 p->bt.hsync, p->bt.hbackporch,
697 p->bt.vfrontporch, p->bt.vsync,
698 p->bt.vbackporch, p->bt.il_vfrontporch,
699 p->bt.il_vsync, p->bt.il_vbackporch,
700 p->bt.standards, p->bt.flags);
701 break;
702 default:
703 pr_cont("type=%d\n", p->type);
704 break;
705 }
706 }
707
v4l_print_enum_dv_timings(const void * arg,bool write_only)708 static void v4l_print_enum_dv_timings(const void *arg, bool write_only)
709 {
710 const struct v4l2_enum_dv_timings *p = arg;
711
712 pr_cont("index=%u, ", p->index);
713 v4l_print_dv_timings(&p->timings, write_only);
714 }
715
v4l_print_dv_timings_cap(const void * arg,bool write_only)716 static void v4l_print_dv_timings_cap(const void *arg, bool write_only)
717 {
718 const struct v4l2_dv_timings_cap *p = arg;
719
720 switch (p->type) {
721 case V4L2_DV_BT_656_1120:
722 pr_cont("type=bt-656/1120, width=%u-%u, height=%u-%u, pixelclock=%llu-%llu, standards=0x%x, capabilities=0x%x\n",
723 p->bt.min_width, p->bt.max_width,
724 p->bt.min_height, p->bt.max_height,
725 p->bt.min_pixelclock, p->bt.max_pixelclock,
726 p->bt.standards, p->bt.capabilities);
727 break;
728 default:
729 pr_cont("type=%u\n", p->type);
730 break;
731 }
732 }
733
v4l_print_frmsizeenum(const void * arg,bool write_only)734 static void v4l_print_frmsizeenum(const void *arg, bool write_only)
735 {
736 const struct v4l2_frmsizeenum *p = arg;
737
738 pr_cont("index=%u, pixelformat=%p4cc, type=%u",
739 p->index, &p->pixel_format, p->type);
740 switch (p->type) {
741 case V4L2_FRMSIZE_TYPE_DISCRETE:
742 pr_cont(", wxh=%ux%u\n",
743 p->discrete.width, p->discrete.height);
744 break;
745 case V4L2_FRMSIZE_TYPE_STEPWISE:
746 pr_cont(", min=%ux%u, max=%ux%u, step=%ux%u\n",
747 p->stepwise.min_width,
748 p->stepwise.min_height,
749 p->stepwise.max_width,
750 p->stepwise.max_height,
751 p->stepwise.step_width,
752 p->stepwise.step_height);
753 break;
754 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
755 default:
756 pr_cont("\n");
757 break;
758 }
759 }
760
v4l_print_frmivalenum(const void * arg,bool write_only)761 static void v4l_print_frmivalenum(const void *arg, bool write_only)
762 {
763 const struct v4l2_frmivalenum *p = arg;
764
765 pr_cont("index=%u, pixelformat=%p4cc, wxh=%ux%u, type=%u",
766 p->index, &p->pixel_format, p->width, p->height, p->type);
767 switch (p->type) {
768 case V4L2_FRMIVAL_TYPE_DISCRETE:
769 pr_cont(", fps=%d/%d\n",
770 p->discrete.numerator,
771 p->discrete.denominator);
772 break;
773 case V4L2_FRMIVAL_TYPE_STEPWISE:
774 pr_cont(", min=%d/%d, max=%d/%d, step=%d/%d\n",
775 p->stepwise.min.numerator,
776 p->stepwise.min.denominator,
777 p->stepwise.max.numerator,
778 p->stepwise.max.denominator,
779 p->stepwise.step.numerator,
780 p->stepwise.step.denominator);
781 break;
782 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
783 default:
784 pr_cont("\n");
785 break;
786 }
787 }
788
v4l_print_event(const void * arg,bool write_only)789 static void v4l_print_event(const void *arg, bool write_only)
790 {
791 const struct v4l2_event *p = arg;
792 const struct v4l2_event_ctrl *c;
793
794 pr_cont("type=0x%x, pending=%u, sequence=%u, id=%u, timestamp=%llu.%9.9llu\n",
795 p->type, p->pending, p->sequence, p->id,
796 p->timestamp.tv_sec, p->timestamp.tv_nsec);
797 switch (p->type) {
798 case V4L2_EVENT_VSYNC:
799 printk(KERN_DEBUG "field=%s\n",
800 prt_names(p->u.vsync.field, v4l2_field_names));
801 break;
802 case V4L2_EVENT_CTRL:
803 c = &p->u.ctrl;
804 printk(KERN_DEBUG "changes=0x%x, type=%u, ",
805 c->changes, c->type);
806 if (c->type == V4L2_CTRL_TYPE_INTEGER64)
807 pr_cont("value64=%lld, ", c->value64);
808 else
809 pr_cont("value=%d, ", c->value);
810 pr_cont("flags=0x%x, minimum=%d, maximum=%d, step=%d, default_value=%d\n",
811 c->flags, c->minimum, c->maximum,
812 c->step, c->default_value);
813 break;
814 case V4L2_EVENT_FRAME_SYNC:
815 pr_cont("frame_sequence=%u\n",
816 p->u.frame_sync.frame_sequence);
817 break;
818 }
819 }
820
v4l_print_event_subscription(const void * arg,bool write_only)821 static void v4l_print_event_subscription(const void *arg, bool write_only)
822 {
823 const struct v4l2_event_subscription *p = arg;
824
825 pr_cont("type=0x%x, id=0x%x, flags=0x%x\n",
826 p->type, p->id, p->flags);
827 }
828
v4l_print_sliced_vbi_cap(const void * arg,bool write_only)829 static void v4l_print_sliced_vbi_cap(const void *arg, bool write_only)
830 {
831 const struct v4l2_sliced_vbi_cap *p = arg;
832 int i;
833
834 pr_cont("type=%s, service_set=0x%08x\n",
835 prt_names(p->type, v4l2_type_names), p->service_set);
836 for (i = 0; i < 24; i++)
837 printk(KERN_DEBUG "line[%02u]=0x%04x, 0x%04x\n", i,
838 p->service_lines[0][i],
839 p->service_lines[1][i]);
840 }
841
v4l_print_freq_band(const void * arg,bool write_only)842 static void v4l_print_freq_band(const void *arg, bool write_only)
843 {
844 const struct v4l2_frequency_band *p = arg;
845
846 pr_cont("tuner=%u, type=%u, index=%u, capability=0x%x, rangelow=%u, rangehigh=%u, modulation=0x%x\n",
847 p->tuner, p->type, p->index,
848 p->capability, p->rangelow,
849 p->rangehigh, p->modulation);
850 }
851
v4l_print_edid(const void * arg,bool write_only)852 static void v4l_print_edid(const void *arg, bool write_only)
853 {
854 const struct v4l2_edid *p = arg;
855
856 pr_cont("pad=%u, start_block=%u, blocks=%u\n",
857 p->pad, p->start_block, p->blocks);
858 }
859
v4l_print_u32(const void * arg,bool write_only)860 static void v4l_print_u32(const void *arg, bool write_only)
861 {
862 pr_cont("value=%u\n", *(const u32 *)arg);
863 }
864
v4l_print_newline(const void * arg,bool write_only)865 static void v4l_print_newline(const void *arg, bool write_only)
866 {
867 pr_cont("\n");
868 }
869
v4l_print_default(const void * arg,bool write_only)870 static void v4l_print_default(const void *arg, bool write_only)
871 {
872 pr_cont("driver-specific ioctl\n");
873 }
874
check_ext_ctrls(struct v4l2_ext_controls * c,unsigned long ioctl)875 static bool check_ext_ctrls(struct v4l2_ext_controls *c, unsigned long ioctl)
876 {
877 __u32 i;
878
879 /* zero the reserved fields */
880 c->reserved[0] = 0;
881 for (i = 0; i < c->count; i++)
882 c->controls[i].reserved2[0] = 0;
883
884 switch (c->which) {
885 case V4L2_CID_PRIVATE_BASE:
886 /*
887 * V4L2_CID_PRIVATE_BASE cannot be used as control class
888 * when using extended controls.
889 * Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
890 * is it allowed for backwards compatibility.
891 */
892 if (ioctl == VIDIOC_G_CTRL || ioctl == VIDIOC_S_CTRL)
893 return false;
894 break;
895 case V4L2_CTRL_WHICH_DEF_VAL:
896 case V4L2_CTRL_WHICH_MIN_VAL:
897 case V4L2_CTRL_WHICH_MAX_VAL:
898 /* Default, minimum or maximum value cannot be changed */
899 if (ioctl == VIDIOC_S_EXT_CTRLS ||
900 ioctl == VIDIOC_TRY_EXT_CTRLS) {
901 c->error_idx = c->count;
902 return false;
903 }
904 return true;
905 case V4L2_CTRL_WHICH_CUR_VAL:
906 return true;
907 case V4L2_CTRL_WHICH_REQUEST_VAL:
908 c->error_idx = c->count;
909 return false;
910 }
911
912 /* Check that all controls are from the same control class. */
913 for (i = 0; i < c->count; i++) {
914 if (V4L2_CTRL_ID2WHICH(c->controls[i].id) != c->which) {
915 c->error_idx = ioctl == VIDIOC_TRY_EXT_CTRLS ? i :
916 c->count;
917 return false;
918 }
919 }
920 return true;
921 }
922
check_fmt(struct file * file,enum v4l2_buf_type type)923 static int check_fmt(struct file *file, enum v4l2_buf_type type)
924 {
925 const u32 vid_caps = V4L2_CAP_VIDEO_CAPTURE |
926 V4L2_CAP_VIDEO_CAPTURE_MPLANE |
927 V4L2_CAP_VIDEO_OUTPUT |
928 V4L2_CAP_VIDEO_OUTPUT_MPLANE |
929 V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE;
930 const u32 meta_caps = V4L2_CAP_META_CAPTURE |
931 V4L2_CAP_META_OUTPUT;
932 struct video_device *vfd = video_devdata(file);
933 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
934 bool is_vid = vfd->vfl_type == VFL_TYPE_VIDEO &&
935 (vfd->device_caps & vid_caps);
936 bool is_vbi = vfd->vfl_type == VFL_TYPE_VBI;
937 bool is_sdr = vfd->vfl_type == VFL_TYPE_SDR;
938 bool is_tch = vfd->vfl_type == VFL_TYPE_TOUCH;
939 bool is_meta = vfd->vfl_type == VFL_TYPE_VIDEO &&
940 (vfd->device_caps & meta_caps);
941 bool is_rx = vfd->vfl_dir != VFL_DIR_TX;
942 bool is_tx = vfd->vfl_dir != VFL_DIR_RX;
943
944 if (ops == NULL)
945 return -EINVAL;
946
947 switch (type) {
948 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
949 if ((is_vid || is_tch) && is_rx &&
950 (ops->vidioc_g_fmt_vid_cap || ops->vidioc_g_fmt_vid_cap_mplane))
951 return 0;
952 break;
953 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
954 if ((is_vid || is_tch) && is_rx && ops->vidioc_g_fmt_vid_cap_mplane)
955 return 0;
956 break;
957 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
958 if (is_vid && is_rx && ops->vidioc_g_fmt_vid_overlay)
959 return 0;
960 break;
961 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
962 if (is_vid && is_tx &&
963 (ops->vidioc_g_fmt_vid_out || ops->vidioc_g_fmt_vid_out_mplane))
964 return 0;
965 break;
966 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
967 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_mplane)
968 return 0;
969 break;
970 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
971 if (is_vid && is_tx && ops->vidioc_g_fmt_vid_out_overlay)
972 return 0;
973 break;
974 case V4L2_BUF_TYPE_VBI_CAPTURE:
975 if (is_vbi && is_rx && ops->vidioc_g_fmt_vbi_cap)
976 return 0;
977 break;
978 case V4L2_BUF_TYPE_VBI_OUTPUT:
979 if (is_vbi && is_tx && ops->vidioc_g_fmt_vbi_out)
980 return 0;
981 break;
982 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
983 if (is_vbi && is_rx && ops->vidioc_g_fmt_sliced_vbi_cap)
984 return 0;
985 break;
986 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
987 if (is_vbi && is_tx && ops->vidioc_g_fmt_sliced_vbi_out)
988 return 0;
989 break;
990 case V4L2_BUF_TYPE_SDR_CAPTURE:
991 if (is_sdr && is_rx && ops->vidioc_g_fmt_sdr_cap)
992 return 0;
993 break;
994 case V4L2_BUF_TYPE_SDR_OUTPUT:
995 if (is_sdr && is_tx && ops->vidioc_g_fmt_sdr_out)
996 return 0;
997 break;
998 case V4L2_BUF_TYPE_META_CAPTURE:
999 if (is_meta && is_rx && ops->vidioc_g_fmt_meta_cap)
1000 return 0;
1001 break;
1002 case V4L2_BUF_TYPE_META_OUTPUT:
1003 if (is_meta && is_tx && ops->vidioc_g_fmt_meta_out)
1004 return 0;
1005 break;
1006 default:
1007 break;
1008 }
1009 return -EINVAL;
1010 }
1011
v4l_sanitize_colorspace(u32 pixelformat,u32 * colorspace,u32 * encoding,u32 * quantization,u32 * xfer_func)1012 static void v4l_sanitize_colorspace(u32 pixelformat, u32 *colorspace,
1013 u32 *encoding, u32 *quantization,
1014 u32 *xfer_func)
1015 {
1016 bool is_hsv = pixelformat == V4L2_PIX_FMT_HSV24 ||
1017 pixelformat == V4L2_PIX_FMT_HSV32;
1018
1019 if (!v4l2_is_colorspace_valid(*colorspace)) {
1020 *colorspace = V4L2_COLORSPACE_DEFAULT;
1021 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1022 *quantization = V4L2_QUANTIZATION_DEFAULT;
1023 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1024 }
1025
1026 if ((!is_hsv && !v4l2_is_ycbcr_enc_valid(*encoding)) ||
1027 (is_hsv && !v4l2_is_hsv_enc_valid(*encoding)))
1028 *encoding = V4L2_YCBCR_ENC_DEFAULT;
1029
1030 if (!v4l2_is_quant_valid(*quantization))
1031 *quantization = V4L2_QUANTIZATION_DEFAULT;
1032
1033 if (!v4l2_is_xfer_func_valid(*xfer_func))
1034 *xfer_func = V4L2_XFER_FUNC_DEFAULT;
1035 }
1036
v4l_sanitize_format(struct v4l2_format * fmt)1037 static void v4l_sanitize_format(struct v4l2_format *fmt)
1038 {
1039 unsigned int offset;
1040
1041 /* Make sure num_planes is not bogus */
1042 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1043 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
1044 fmt->fmt.pix_mp.num_planes = min_t(u32, fmt->fmt.pix_mp.num_planes,
1045 VIDEO_MAX_PLANES);
1046
1047 /*
1048 * The v4l2_pix_format structure has been extended with fields that were
1049 * not previously required to be set to zero by applications. The priv
1050 * field, when set to a magic value, indicates that the extended fields
1051 * are valid. Otherwise they will contain undefined values. To simplify
1052 * the API towards drivers zero the extended fields and set the priv
1053 * field to the magic value when the extended pixel format structure
1054 * isn't used by applications.
1055 */
1056 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1057 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1058 if (fmt->fmt.pix.priv != V4L2_PIX_FMT_PRIV_MAGIC) {
1059 fmt->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1060
1061 offset = offsetof(struct v4l2_pix_format, priv)
1062 + sizeof(fmt->fmt.pix.priv);
1063 memset(((void *)&fmt->fmt.pix) + offset, 0,
1064 sizeof(fmt->fmt.pix) - offset);
1065 }
1066 }
1067
1068 /* Replace invalid colorspace values with defaults. */
1069 if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
1070 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1071 v4l_sanitize_colorspace(fmt->fmt.pix.pixelformat,
1072 &fmt->fmt.pix.colorspace,
1073 &fmt->fmt.pix.ycbcr_enc,
1074 &fmt->fmt.pix.quantization,
1075 &fmt->fmt.pix.xfer_func);
1076 } else if (fmt->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE ||
1077 fmt->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
1078 u32 ycbcr_enc = fmt->fmt.pix_mp.ycbcr_enc;
1079 u32 quantization = fmt->fmt.pix_mp.quantization;
1080 u32 xfer_func = fmt->fmt.pix_mp.xfer_func;
1081
1082 v4l_sanitize_colorspace(fmt->fmt.pix_mp.pixelformat,
1083 &fmt->fmt.pix_mp.colorspace, &ycbcr_enc,
1084 &quantization, &xfer_func);
1085
1086 fmt->fmt.pix_mp.ycbcr_enc = ycbcr_enc;
1087 fmt->fmt.pix_mp.quantization = quantization;
1088 fmt->fmt.pix_mp.xfer_func = xfer_func;
1089 }
1090 }
1091
v4l_querycap(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1092 static int v4l_querycap(const struct v4l2_ioctl_ops *ops, struct file *file,
1093 void *arg)
1094 {
1095 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
1096 struct video_device *vfd = video_devdata(file);
1097 int ret;
1098
1099 cap->version = LINUX_VERSION_CODE;
1100 cap->device_caps = vfd->device_caps;
1101 cap->capabilities = vfd->device_caps | V4L2_CAP_DEVICE_CAPS;
1102
1103 media_set_bus_info(cap->bus_info, sizeof(cap->bus_info),
1104 vfd->dev_parent);
1105
1106 ret = ops->vidioc_querycap(file, NULL, cap);
1107
1108 /*
1109 * Drivers must not change device_caps, so check for this and
1110 * warn if this happened.
1111 */
1112 WARN_ON(cap->device_caps != vfd->device_caps);
1113 /*
1114 * Check that capabilities is a superset of
1115 * vfd->device_caps | V4L2_CAP_DEVICE_CAPS
1116 */
1117 WARN_ON((cap->capabilities &
1118 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS)) !=
1119 (vfd->device_caps | V4L2_CAP_DEVICE_CAPS));
1120 cap->capabilities |= V4L2_CAP_EXT_PIX_FORMAT;
1121 cap->device_caps |= V4L2_CAP_EXT_PIX_FORMAT;
1122
1123 return ret;
1124 }
1125
v4l_g_input(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1126 static int v4l_g_input(const struct v4l2_ioctl_ops *ops, struct file *file,
1127 void *arg)
1128 {
1129 struct video_device *vfd = video_devdata(file);
1130
1131 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1132 *(int *)arg = 0;
1133 return 0;
1134 }
1135
1136 return ops->vidioc_g_input(file, NULL, arg);
1137 }
1138
v4l_g_output(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1139 static int v4l_g_output(const struct v4l2_ioctl_ops *ops, struct file *file,
1140 void *arg)
1141 {
1142 struct video_device *vfd = video_devdata(file);
1143
1144 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1145 *(int *)arg = 0;
1146 return 0;
1147 }
1148
1149 return ops->vidioc_g_output(file, NULL, arg);
1150 }
1151
v4l_s_input(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1152 static int v4l_s_input(const struct v4l2_ioctl_ops *ops, struct file *file,
1153 void *arg)
1154 {
1155 struct video_device *vfd = video_devdata(file);
1156 int ret;
1157
1158 ret = v4l_enable_media_source(vfd);
1159 if (ret)
1160 return ret;
1161
1162 if (vfd->device_caps & V4L2_CAP_IO_MC)
1163 return *(int *)arg ? -EINVAL : 0;
1164
1165 return ops->vidioc_s_input(file, NULL, *(unsigned int *)arg);
1166 }
1167
v4l_s_output(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1168 static int v4l_s_output(const struct v4l2_ioctl_ops *ops, struct file *file,
1169 void *arg)
1170 {
1171 struct video_device *vfd = video_devdata(file);
1172
1173 if (vfd->device_caps & V4L2_CAP_IO_MC)
1174 return *(int *)arg ? -EINVAL : 0;
1175
1176 return ops->vidioc_s_output(file, NULL, *(unsigned int *)arg);
1177 }
1178
v4l_g_priority(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1179 static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, struct file *file,
1180 void *arg)
1181 {
1182 struct video_device *vfd;
1183 u32 *p = arg;
1184
1185 vfd = video_devdata(file);
1186 *p = v4l2_prio_max(vfd->prio);
1187 return 0;
1188 }
1189
v4l_s_priority(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1190 static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, struct file *file,
1191 void *arg)
1192 {
1193 struct video_device *vfd;
1194 struct v4l2_fh *vfh;
1195 u32 *p = arg;
1196
1197 vfd = video_devdata(file);
1198 vfh = file_to_v4l2_fh(file);
1199 return v4l2_prio_change(vfd->prio, &vfh->prio, *p);
1200 }
1201
v4l_enuminput(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1202 static int v4l_enuminput(const struct v4l2_ioctl_ops *ops, struct file *file,
1203 void *arg)
1204 {
1205 struct video_device *vfd = video_devdata(file);
1206 struct v4l2_input *p = arg;
1207
1208 /*
1209 * We set the flags for CAP_DV_TIMINGS &
1210 * CAP_STD here based on ioctl handler provided by the
1211 * driver. If the driver doesn't support these
1212 * for a specific input, it must override these flags.
1213 */
1214 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1215 p->capabilities |= V4L2_IN_CAP_STD;
1216
1217 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1218 if (p->index)
1219 return -EINVAL;
1220 strscpy(p->name, vfd->name, sizeof(p->name));
1221 p->type = V4L2_INPUT_TYPE_CAMERA;
1222 return 0;
1223 }
1224
1225 return ops->vidioc_enum_input(file, NULL, p);
1226 }
1227
v4l_enumoutput(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1228 static int v4l_enumoutput(const struct v4l2_ioctl_ops *ops, struct file *file,
1229 void *arg)
1230 {
1231 struct video_device *vfd = video_devdata(file);
1232 struct v4l2_output *p = arg;
1233
1234 /*
1235 * We set the flags for CAP_DV_TIMINGS &
1236 * CAP_STD here based on ioctl handler provided by the
1237 * driver. If the driver doesn't support these
1238 * for a specific output, it must override these flags.
1239 */
1240 if (is_valid_ioctl(vfd, VIDIOC_S_STD))
1241 p->capabilities |= V4L2_OUT_CAP_STD;
1242
1243 if (vfd->device_caps & V4L2_CAP_IO_MC) {
1244 if (p->index)
1245 return -EINVAL;
1246 strscpy(p->name, vfd->name, sizeof(p->name));
1247 p->type = V4L2_OUTPUT_TYPE_ANALOG;
1248 return 0;
1249 }
1250
1251 return ops->vidioc_enum_output(file, NULL, p);
1252 }
1253
v4l_fill_fmtdesc(struct v4l2_fmtdesc * fmt)1254 static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
1255 {
1256 const unsigned sz = sizeof(fmt->description);
1257 const char *descr = NULL;
1258 u32 flags = 0;
1259
1260 /*
1261 * We depart from the normal coding style here since the descriptions
1262 * should be aligned so it is easy to see which descriptions will be
1263 * longer than 31 characters (the max length for a description).
1264 * And frankly, this is easier to read anyway.
1265 *
1266 * Note that gcc will use O(log N) comparisons to find the right case.
1267 */
1268 switch (fmt->pixelformat) {
1269 /* Max description length mask: descr = "0123456789012345678901234567890" */
1270 case V4L2_PIX_FMT_RGB332: descr = "8-bit RGB 3-3-2"; break;
1271 case V4L2_PIX_FMT_RGB444: descr = "16-bit A/XRGB 4-4-4-4"; break;
1272 case V4L2_PIX_FMT_ARGB444: descr = "16-bit ARGB 4-4-4-4"; break;
1273 case V4L2_PIX_FMT_XRGB444: descr = "16-bit XRGB 4-4-4-4"; break;
1274 case V4L2_PIX_FMT_RGBA444: descr = "16-bit RGBA 4-4-4-4"; break;
1275 case V4L2_PIX_FMT_RGBX444: descr = "16-bit RGBX 4-4-4-4"; break;
1276 case V4L2_PIX_FMT_ABGR444: descr = "16-bit ABGR 4-4-4-4"; break;
1277 case V4L2_PIX_FMT_XBGR444: descr = "16-bit XBGR 4-4-4-4"; break;
1278 case V4L2_PIX_FMT_BGRA444: descr = "16-bit BGRA 4-4-4-4"; break;
1279 case V4L2_PIX_FMT_BGRX444: descr = "16-bit BGRX 4-4-4-4"; break;
1280 case V4L2_PIX_FMT_RGB555: descr = "16-bit A/XRGB 1-5-5-5"; break;
1281 case V4L2_PIX_FMT_ARGB555: descr = "16-bit ARGB 1-5-5-5"; break;
1282 case V4L2_PIX_FMT_XRGB555: descr = "16-bit XRGB 1-5-5-5"; break;
1283 case V4L2_PIX_FMT_ABGR555: descr = "16-bit ABGR 1-5-5-5"; break;
1284 case V4L2_PIX_FMT_XBGR555: descr = "16-bit XBGR 1-5-5-5"; break;
1285 case V4L2_PIX_FMT_RGBA555: descr = "16-bit RGBA 5-5-5-1"; break;
1286 case V4L2_PIX_FMT_RGBX555: descr = "16-bit RGBX 5-5-5-1"; break;
1287 case V4L2_PIX_FMT_BGRA555: descr = "16-bit BGRA 5-5-5-1"; break;
1288 case V4L2_PIX_FMT_BGRX555: descr = "16-bit BGRX 5-5-5-1"; break;
1289 case V4L2_PIX_FMT_RGB565: descr = "16-bit RGB 5-6-5"; break;
1290 case V4L2_PIX_FMT_RGB555X: descr = "16-bit A/XRGB 1-5-5-5 BE"; break;
1291 case V4L2_PIX_FMT_ARGB555X: descr = "16-bit ARGB 1-5-5-5 BE"; break;
1292 case V4L2_PIX_FMT_XRGB555X: descr = "16-bit XRGB 1-5-5-5 BE"; break;
1293 case V4L2_PIX_FMT_RGB565X: descr = "16-bit RGB 5-6-5 BE"; break;
1294 case V4L2_PIX_FMT_BGR666: descr = "18-bit BGRX 6-6-6-14"; break;
1295 case V4L2_PIX_FMT_BGR24: descr = "24-bit BGR 8-8-8"; break;
1296 case V4L2_PIX_FMT_RGB24: descr = "24-bit RGB 8-8-8"; break;
1297 case V4L2_PIX_FMT_BGR32: descr = "32-bit BGRA/X 8-8-8-8"; break;
1298 case V4L2_PIX_FMT_ABGR32: descr = "32-bit BGRA 8-8-8-8"; break;
1299 case V4L2_PIX_FMT_XBGR32: descr = "32-bit BGRX 8-8-8-8"; break;
1300 case V4L2_PIX_FMT_RGB32: descr = "32-bit A/XRGB 8-8-8-8"; break;
1301 case V4L2_PIX_FMT_ARGB32: descr = "32-bit ARGB 8-8-8-8"; break;
1302 case V4L2_PIX_FMT_XRGB32: descr = "32-bit XRGB 8-8-8-8"; break;
1303 case V4L2_PIX_FMT_BGRA32: descr = "32-bit ABGR 8-8-8-8"; break;
1304 case V4L2_PIX_FMT_BGRX32: descr = "32-bit XBGR 8-8-8-8"; break;
1305 case V4L2_PIX_FMT_RGBA32: descr = "32-bit RGBA 8-8-8-8"; break;
1306 case V4L2_PIX_FMT_RGBX32: descr = "32-bit RGBX 8-8-8-8"; break;
1307 case V4L2_PIX_FMT_RGBX1010102: descr = "32-bit RGBX 10-10-10-2"; break;
1308 case V4L2_PIX_FMT_RGBA1010102: descr = "32-bit RGBA 10-10-10-2"; break;
1309 case V4L2_PIX_FMT_ARGB2101010: descr = "32-bit ARGB 2-10-10-10"; break;
1310 case V4L2_PIX_FMT_BGR48: descr = "48-bit BGR 16-16-16"; break;
1311 case V4L2_PIX_FMT_RGB48: descr = "48-bit RGB 16-16-16"; break;
1312 case V4L2_PIX_FMT_BGR48_12: descr = "12-bit Depth BGR"; break;
1313 case V4L2_PIX_FMT_ABGR64_12: descr = "12-bit Depth BGRA"; break;
1314 case V4L2_PIX_FMT_GREY: descr = "8-bit Greyscale"; break;
1315 case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;
1316 case V4L2_PIX_FMT_Y6: descr = "6-bit Greyscale"; break;
1317 case V4L2_PIX_FMT_Y10: descr = "10-bit Greyscale"; break;
1318 case V4L2_PIX_FMT_Y12: descr = "12-bit Greyscale"; break;
1319 case V4L2_PIX_FMT_Y012: descr = "12-bit Greyscale (bits 15-4)"; break;
1320 case V4L2_PIX_FMT_Y14: descr = "14-bit Greyscale"; break;
1321 case V4L2_PIX_FMT_Y16: descr = "16-bit Greyscale"; break;
1322 case V4L2_PIX_FMT_Y16_BE: descr = "16-bit Greyscale BE"; break;
1323 case V4L2_PIX_FMT_Y10BPACK: descr = "10-bit Greyscale (Packed)"; break;
1324 case V4L2_PIX_FMT_Y10P: descr = "10-bit Greyscale (MIPI Packed)"; break;
1325 case V4L2_PIX_FMT_IPU3_Y10: descr = "10-bit greyscale (IPU3 Packed)"; break;
1326 case V4L2_PIX_FMT_Y12P: descr = "12-bit Greyscale (MIPI Packed)"; break;
1327 case V4L2_PIX_FMT_Y14P: descr = "14-bit Greyscale (MIPI Packed)"; break;
1328 case V4L2_PIX_FMT_Y8I: descr = "Interleaved 8-bit Greyscale"; break;
1329 case V4L2_PIX_FMT_Y12I: descr = "Interleaved 12-bit Greyscale"; break;
1330 case V4L2_PIX_FMT_Y16I: descr = "Interleaved 16-bit Greyscale"; break;
1331 case V4L2_PIX_FMT_Z16: descr = "16-bit Depth"; break;
1332 case V4L2_PIX_FMT_INZI: descr = "Planar 10:16 Greyscale Depth"; break;
1333 case V4L2_PIX_FMT_CNF4: descr = "4-bit Depth Confidence (Packed)"; break;
1334 case V4L2_PIX_FMT_PAL8: descr = "8-bit Palette"; break;
1335 case V4L2_PIX_FMT_UV8: descr = "8-bit Chrominance UV 4-4"; break;
1336 case V4L2_PIX_FMT_YVU410: descr = "Planar YVU 4:1:0"; break;
1337 case V4L2_PIX_FMT_YVU420: descr = "Planar YVU 4:2:0"; break;
1338 case V4L2_PIX_FMT_YUYV: descr = "YUYV 4:2:2"; break;
1339 case V4L2_PIX_FMT_YYUV: descr = "YYUV 4:2:2"; break;
1340 case V4L2_PIX_FMT_YVYU: descr = "YVYU 4:2:2"; break;
1341 case V4L2_PIX_FMT_UYVY: descr = "UYVY 4:2:2"; break;
1342 case V4L2_PIX_FMT_VYUY: descr = "VYUY 4:2:2"; break;
1343 case V4L2_PIX_FMT_YUV422P: descr = "Planar YUV 4:2:2"; break;
1344 case V4L2_PIX_FMT_YUV411P: descr = "Planar YUV 4:1:1"; break;
1345 case V4L2_PIX_FMT_Y41P: descr = "YUV 4:1:1 (Packed)"; break;
1346 case V4L2_PIX_FMT_YUV444: descr = "16-bit A/XYUV 4-4-4-4"; break;
1347 case V4L2_PIX_FMT_YUV555: descr = "16-bit A/XYUV 1-5-5-5"; break;
1348 case V4L2_PIX_FMT_YUV565: descr = "16-bit YUV 5-6-5"; break;
1349 case V4L2_PIX_FMT_YUV24: descr = "24-bit YUV 4:4:4 8-8-8"; break;
1350 case V4L2_PIX_FMT_YUV32: descr = "32-bit A/XYUV 8-8-8-8"; break;
1351 case V4L2_PIX_FMT_AYUV32: descr = "32-bit AYUV 8-8-8-8"; break;
1352 case V4L2_PIX_FMT_XYUV32: descr = "32-bit XYUV 8-8-8-8"; break;
1353 case V4L2_PIX_FMT_VUYA32: descr = "32-bit VUYA 8-8-8-8"; break;
1354 case V4L2_PIX_FMT_VUYX32: descr = "32-bit VUYX 8-8-8-8"; break;
1355 case V4L2_PIX_FMT_YUVA32: descr = "32-bit YUVA 8-8-8-8"; break;
1356 case V4L2_PIX_FMT_YUVX32: descr = "32-bit YUVX 8-8-8-8"; break;
1357 case V4L2_PIX_FMT_YUV410: descr = "Planar YUV 4:1:0"; break;
1358 case V4L2_PIX_FMT_YUV420: descr = "Planar YUV 4:2:0"; break;
1359 case V4L2_PIX_FMT_HI240: descr = "8-bit Dithered RGB (BTTV)"; break;
1360 case V4L2_PIX_FMT_M420: descr = "YUV 4:2:0 (M420)"; break;
1361 case V4L2_PIX_FMT_YUV48_12: descr = "12-bit YUV 4:4:4 Packed"; break;
1362 case V4L2_PIX_FMT_NV12: descr = "Y/UV 4:2:0"; break;
1363 case V4L2_PIX_FMT_NV21: descr = "Y/VU 4:2:0"; break;
1364 case V4L2_PIX_FMT_NV15: descr = "10-bit Y/UV 4:2:0 (Packed)"; break;
1365 case V4L2_PIX_FMT_NV16: descr = "Y/UV 4:2:2"; break;
1366 case V4L2_PIX_FMT_NV61: descr = "Y/VU 4:2:2"; break;
1367 case V4L2_PIX_FMT_NV20: descr = "10-bit Y/UV 4:2:2 (Packed)"; break;
1368 case V4L2_PIX_FMT_NV24: descr = "Y/UV 4:4:4"; break;
1369 case V4L2_PIX_FMT_NV42: descr = "Y/VU 4:4:4"; break;
1370 case V4L2_PIX_FMT_P010: descr = "10-bit Y/UV 4:2:0"; break;
1371 case V4L2_PIX_FMT_P012: descr = "12-bit Y/UV 4:2:0"; break;
1372 case V4L2_PIX_FMT_NV12_4L4: descr = "Y/UV 4:2:0 (4x4 Linear)"; break;
1373 case V4L2_PIX_FMT_NV12_16L16: descr = "Y/UV 4:2:0 (16x16 Linear)"; break;
1374 case V4L2_PIX_FMT_NV12_32L32: descr = "Y/UV 4:2:0 (32x32 Linear)"; break;
1375 case V4L2_PIX_FMT_NV15_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1376 case V4L2_PIX_FMT_P010_4L4: descr = "10-bit Y/UV 4:2:0 (4x4 Linear)"; break;
1377 case V4L2_PIX_FMT_NV12M: descr = "Y/UV 4:2:0 (N-C)"; break;
1378 case V4L2_PIX_FMT_NV21M: descr = "Y/VU 4:2:0 (N-C)"; break;
1379 case V4L2_PIX_FMT_NV16M: descr = "Y/UV 4:2:2 (N-C)"; break;
1380 case V4L2_PIX_FMT_NV61M: descr = "Y/VU 4:2:2 (N-C)"; break;
1381 case V4L2_PIX_FMT_NV12MT: descr = "Y/UV 4:2:0 (64x32 MB, N-C)"; break;
1382 case V4L2_PIX_FMT_NV12MT_16X16: descr = "Y/UV 4:2:0 (16x16 MB, N-C)"; break;
1383 case V4L2_PIX_FMT_P012M: descr = "12-bit Y/UV 4:2:0 (N-C)"; break;
1384 case V4L2_PIX_FMT_YUV420M: descr = "Planar YUV 4:2:0 (N-C)"; break;
1385 case V4L2_PIX_FMT_YVU420M: descr = "Planar YVU 4:2:0 (N-C)"; break;
1386 case V4L2_PIX_FMT_YUV422M: descr = "Planar YUV 4:2:2 (N-C)"; break;
1387 case V4L2_PIX_FMT_YVU422M: descr = "Planar YVU 4:2:2 (N-C)"; break;
1388 case V4L2_PIX_FMT_YUV444M: descr = "Planar YUV 4:4:4 (N-C)"; break;
1389 case V4L2_PIX_FMT_YVU444M: descr = "Planar YVU 4:4:4 (N-C)"; break;
1390 case V4L2_PIX_FMT_SBGGR8: descr = "8-bit Bayer BGBG/GRGR"; break;
1391 case V4L2_PIX_FMT_SGBRG8: descr = "8-bit Bayer GBGB/RGRG"; break;
1392 case V4L2_PIX_FMT_SGRBG8: descr = "8-bit Bayer GRGR/BGBG"; break;
1393 case V4L2_PIX_FMT_SRGGB8: descr = "8-bit Bayer RGRG/GBGB"; break;
1394 case V4L2_PIX_FMT_SBGGR10: descr = "10-bit Bayer BGBG/GRGR"; break;
1395 case V4L2_PIX_FMT_SGBRG10: descr = "10-bit Bayer GBGB/RGRG"; break;
1396 case V4L2_PIX_FMT_SGRBG10: descr = "10-bit Bayer GRGR/BGBG"; break;
1397 case V4L2_PIX_FMT_SRGGB10: descr = "10-bit Bayer RGRG/GBGB"; break;
1398 case V4L2_PIX_FMT_SBGGR10P: descr = "10-bit Bayer BGBG/GRGR Packed"; break;
1399 case V4L2_PIX_FMT_SGBRG10P: descr = "10-bit Bayer GBGB/RGRG Packed"; break;
1400 case V4L2_PIX_FMT_SGRBG10P: descr = "10-bit Bayer GRGR/BGBG Packed"; break;
1401 case V4L2_PIX_FMT_SRGGB10P: descr = "10-bit Bayer RGRG/GBGB Packed"; break;
1402 case V4L2_PIX_FMT_IPU3_SBGGR10: descr = "10-bit bayer BGGR IPU3 Packed"; break;
1403 case V4L2_PIX_FMT_IPU3_SGBRG10: descr = "10-bit bayer GBRG IPU3 Packed"; break;
1404 case V4L2_PIX_FMT_IPU3_SGRBG10: descr = "10-bit bayer GRBG IPU3 Packed"; break;
1405 case V4L2_PIX_FMT_IPU3_SRGGB10: descr = "10-bit bayer RGGB IPU3 Packed"; break;
1406 case V4L2_PIX_FMT_SBGGR10ALAW8: descr = "8-bit Bayer BGBG/GRGR (A-law)"; break;
1407 case V4L2_PIX_FMT_SGBRG10ALAW8: descr = "8-bit Bayer GBGB/RGRG (A-law)"; break;
1408 case V4L2_PIX_FMT_SGRBG10ALAW8: descr = "8-bit Bayer GRGR/BGBG (A-law)"; break;
1409 case V4L2_PIX_FMT_SRGGB10ALAW8: descr = "8-bit Bayer RGRG/GBGB (A-law)"; break;
1410 case V4L2_PIX_FMT_SBGGR10DPCM8: descr = "8-bit Bayer BGBG/GRGR (DPCM)"; break;
1411 case V4L2_PIX_FMT_SGBRG10DPCM8: descr = "8-bit Bayer GBGB/RGRG (DPCM)"; break;
1412 case V4L2_PIX_FMT_SGRBG10DPCM8: descr = "8-bit Bayer GRGR/BGBG (DPCM)"; break;
1413 case V4L2_PIX_FMT_SRGGB10DPCM8: descr = "8-bit Bayer RGRG/GBGB (DPCM)"; break;
1414 case V4L2_PIX_FMT_RAW_CRU10: descr = "10-bit Raw CRU Packed"; break;
1415 case V4L2_PIX_FMT_SBGGR12: descr = "12-bit Bayer BGBG/GRGR"; break;
1416 case V4L2_PIX_FMT_SGBRG12: descr = "12-bit Bayer GBGB/RGRG"; break;
1417 case V4L2_PIX_FMT_SGRBG12: descr = "12-bit Bayer GRGR/BGBG"; break;
1418 case V4L2_PIX_FMT_SRGGB12: descr = "12-bit Bayer RGRG/GBGB"; break;
1419 case V4L2_PIX_FMT_SBGGR12P: descr = "12-bit Bayer BGBG/GRGR Packed"; break;
1420 case V4L2_PIX_FMT_SGBRG12P: descr = "12-bit Bayer GBGB/RGRG Packed"; break;
1421 case V4L2_PIX_FMT_SGRBG12P: descr = "12-bit Bayer GRGR/BGBG Packed"; break;
1422 case V4L2_PIX_FMT_SRGGB12P: descr = "12-bit Bayer RGRG/GBGB Packed"; break;
1423 case V4L2_PIX_FMT_RAW_CRU12: descr = "12-bit Raw CRU Packed"; break;
1424 case V4L2_PIX_FMT_SBGGR14: descr = "14-bit Bayer BGBG/GRGR"; break;
1425 case V4L2_PIX_FMT_SGBRG14: descr = "14-bit Bayer GBGB/RGRG"; break;
1426 case V4L2_PIX_FMT_SGRBG14: descr = "14-bit Bayer GRGR/BGBG"; break;
1427 case V4L2_PIX_FMT_SRGGB14: descr = "14-bit Bayer RGRG/GBGB"; break;
1428 case V4L2_PIX_FMT_SBGGR14P: descr = "14-bit Bayer BGBG/GRGR Packed"; break;
1429 case V4L2_PIX_FMT_SGBRG14P: descr = "14-bit Bayer GBGB/RGRG Packed"; break;
1430 case V4L2_PIX_FMT_SGRBG14P: descr = "14-bit Bayer GRGR/BGBG Packed"; break;
1431 case V4L2_PIX_FMT_SRGGB14P: descr = "14-bit Bayer RGRG/GBGB Packed"; break;
1432 case V4L2_PIX_FMT_RAW_CRU14: descr = "14-bit Raw CRU Packed"; break;
1433 case V4L2_PIX_FMT_SBGGR16: descr = "16-bit Bayer BGBG/GRGR"; break;
1434 case V4L2_PIX_FMT_SGBRG16: descr = "16-bit Bayer GBGB/RGRG"; break;
1435 case V4L2_PIX_FMT_SGRBG16: descr = "16-bit Bayer GRGR/BGBG"; break;
1436 case V4L2_PIX_FMT_SRGGB16: descr = "16-bit Bayer RGRG/GBGB"; break;
1437 case V4L2_PIX_FMT_RAW_CRU20: descr = "14-bit Raw CRU Packed"; break;
1438 case V4L2_PIX_FMT_SN9C20X_I420: descr = "GSPCA SN9C20X I420"; break;
1439 case V4L2_PIX_FMT_SPCA501: descr = "GSPCA SPCA501"; break;
1440 case V4L2_PIX_FMT_SPCA505: descr = "GSPCA SPCA505"; break;
1441 case V4L2_PIX_FMT_SPCA508: descr = "GSPCA SPCA508"; break;
1442 case V4L2_PIX_FMT_STV0680: descr = "GSPCA STV0680"; break;
1443 case V4L2_PIX_FMT_TM6000: descr = "A/V + VBI Mux Packet"; break;
1444 case V4L2_PIX_FMT_CIT_YYVYUY: descr = "GSPCA CIT YYVYUY"; break;
1445 case V4L2_PIX_FMT_KONICA420: descr = "GSPCA KONICA420"; break;
1446 case V4L2_PIX_FMT_MM21: descr = "Mediatek 8-bit Block Format"; break;
1447 case V4L2_PIX_FMT_HSV24: descr = "24-bit HSV 8-8-8"; break;
1448 case V4L2_PIX_FMT_HSV32: descr = "32-bit XHSV 8-8-8-8"; break;
1449 case V4L2_SDR_FMT_CU8: descr = "Complex U8"; break;
1450 case V4L2_SDR_FMT_CU16LE: descr = "Complex U16LE"; break;
1451 case V4L2_SDR_FMT_CS8: descr = "Complex S8"; break;
1452 case V4L2_SDR_FMT_CS14LE: descr = "Complex S14LE"; break;
1453 case V4L2_SDR_FMT_RU12LE: descr = "Real U12LE"; break;
1454 case V4L2_SDR_FMT_PCU16BE: descr = "Planar Complex U16BE"; break;
1455 case V4L2_SDR_FMT_PCU18BE: descr = "Planar Complex U18BE"; break;
1456 case V4L2_SDR_FMT_PCU20BE: descr = "Planar Complex U20BE"; break;
1457 case V4L2_TCH_FMT_DELTA_TD16: descr = "16-bit Signed Deltas"; break;
1458 case V4L2_TCH_FMT_DELTA_TD08: descr = "8-bit Signed Deltas"; break;
1459 case V4L2_TCH_FMT_TU16: descr = "16-bit Unsigned Touch Data"; break;
1460 case V4L2_TCH_FMT_TU08: descr = "8-bit Unsigned Touch Data"; break;
1461 case V4L2_META_FMT_VSP1_HGO: descr = "R-Car VSP1 1-D Histogram"; break;
1462 case V4L2_META_FMT_VSP1_HGT: descr = "R-Car VSP1 2-D Histogram"; break;
1463 case V4L2_META_FMT_UVC: descr = "UVC Payload Header Metadata"; break;
1464 case V4L2_META_FMT_UVC_MSXU_1_5: descr = "UVC MSXU Metadata"; break;
1465 case V4L2_META_FMT_D4XX: descr = "Intel D4xx UVC Metadata"; break;
1466 case V4L2_META_FMT_VIVID: descr = "Vivid Metadata"; break;
1467 case V4L2_META_FMT_RK_ISP1_PARAMS: descr = "Rockchip ISP1 3A Parameters"; break;
1468 case V4L2_META_FMT_RK_ISP1_STAT_3A: descr = "Rockchip ISP1 3A Statistics"; break;
1469 case V4L2_META_FMT_RK_ISP1_EXT_PARAMS: descr = "Rockchip ISP1 Ext 3A Params"; break;
1470 case V4L2_META_FMT_C3ISP_PARAMS: descr = "Amlogic C3 ISP Parameters"; break;
1471 case V4L2_META_FMT_C3ISP_STATS: descr = "Amlogic C3 ISP Statistics"; break;
1472 case V4L2_META_FMT_MALI_C55_PARAMS: descr = "ARM Mali-C55 ISP Parameters"; break;
1473 case V4L2_META_FMT_MALI_C55_STATS: descr = "ARM Mali-C55 ISP 3A Statistics"; break;
1474 case V4L2_PIX_FMT_NV12_8L128: descr = "NV12 (8x128 Linear)"; break;
1475 case V4L2_PIX_FMT_NV12M_8L128: descr = "NV12M (8x128 Linear)"; break;
1476 case V4L2_PIX_FMT_NV12_10BE_8L128: descr = "10-bit NV12 (8x128 Linear, BE)"; break;
1477 case V4L2_PIX_FMT_NV12M_10BE_8L128: descr = "10-bit NV12M (8x128 Linear, BE)"; break;
1478 case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break;
1479 case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break;
1480 case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break;
1481 case V4L2_META_FMT_RPI_BE_CFG: descr = "RPi PiSP BE Config format"; break;
1482 case V4L2_META_FMT_RPI_FE_CFG: descr = "RPi PiSP FE Config format"; break;
1483 case V4L2_META_FMT_RPI_FE_STATS: descr = "RPi PiSP FE Statistics format"; break;
1484 case V4L2_META_FMT_GENERIC_8: descr = "8-bit Generic Metadata"; break;
1485 case V4L2_META_FMT_GENERIC_CSI2_10: descr = "8-bit Generic Meta, 10b CSI-2"; break;
1486 case V4L2_META_FMT_GENERIC_CSI2_12: descr = "8-bit Generic Meta, 12b CSI-2"; break;
1487 case V4L2_META_FMT_GENERIC_CSI2_14: descr = "8-bit Generic Meta, 14b CSI-2"; break;
1488 case V4L2_META_FMT_GENERIC_CSI2_16: descr = "8-bit Generic Meta, 16b CSI-2"; break;
1489 case V4L2_META_FMT_GENERIC_CSI2_20: descr = "8-bit Generic Meta, 20b CSI-2"; break;
1490 case V4L2_META_FMT_GENERIC_CSI2_24: descr = "8-bit Generic Meta, 24b CSI-2"; break;
1491
1492 default:
1493 /* Compressed formats */
1494 flags = V4L2_FMT_FLAG_COMPRESSED;
1495 switch (fmt->pixelformat) {
1496 /* Max description length mask: descr = "0123456789012345678901234567890" */
1497 case V4L2_PIX_FMT_MJPEG: descr = "Motion-JPEG"; break;
1498 case V4L2_PIX_FMT_JPEG: descr = "JFIF JPEG"; break;
1499 case V4L2_PIX_FMT_DV: descr = "1394"; break;
1500 case V4L2_PIX_FMT_MPEG: descr = "MPEG-1/2/4"; break;
1501 case V4L2_PIX_FMT_H264: descr = "H.264"; break;
1502 case V4L2_PIX_FMT_H264_NO_SC: descr = "H.264 (No Start Codes)"; break;
1503 case V4L2_PIX_FMT_H264_MVC: descr = "H.264 MVC"; break;
1504 case V4L2_PIX_FMT_H264_SLICE: descr = "H.264 Parsed Slice Data"; break;
1505 case V4L2_PIX_FMT_H263: descr = "H.263"; break;
1506 case V4L2_PIX_FMT_MPEG1: descr = "MPEG-1 ES"; break;
1507 case V4L2_PIX_FMT_MPEG2: descr = "MPEG-2 ES"; break;
1508 case V4L2_PIX_FMT_MPEG2_SLICE: descr = "MPEG-2 Parsed Slice Data"; break;
1509 case V4L2_PIX_FMT_MPEG4: descr = "MPEG-4 Part 2 ES"; break;
1510 case V4L2_PIX_FMT_XVID: descr = "Xvid"; break;
1511 case V4L2_PIX_FMT_VC1_ANNEX_G: descr = "VC-1 (SMPTE 412M Annex G)"; break;
1512 case V4L2_PIX_FMT_VC1_ANNEX_L: descr = "VC-1 (SMPTE 412M Annex L)"; break;
1513 case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
1514 case V4L2_PIX_FMT_VP8_FRAME: descr = "VP8 Frame"; break;
1515 case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
1516 case V4L2_PIX_FMT_VP9_FRAME: descr = "VP9 Frame"; break;
1517 case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
1518 case V4L2_PIX_FMT_HEVC_SLICE: descr = "HEVC Parsed Slice Data"; break;
1519 case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
1520 case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
1521 case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;
1522 case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;
1523 case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;
1524 case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
1525 case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
1526 case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;
1527 case V4L2_PIX_FMT_PWC1: descr = "Raw Philips Webcam Type (Old)"; break;
1528 case V4L2_PIX_FMT_PWC2: descr = "Raw Philips Webcam Type (New)"; break;
1529 case V4L2_PIX_FMT_ET61X251: descr = "GSPCA ET61X251"; break;
1530 case V4L2_PIX_FMT_SPCA561: descr = "GSPCA SPCA561"; break;
1531 case V4L2_PIX_FMT_PAC207: descr = "GSPCA PAC207"; break;
1532 case V4L2_PIX_FMT_MR97310A: descr = "GSPCA MR97310A"; break;
1533 case V4L2_PIX_FMT_JL2005BCD: descr = "GSPCA JL2005BCD"; break;
1534 case V4L2_PIX_FMT_SN9C2028: descr = "GSPCA SN9C2028"; break;
1535 case V4L2_PIX_FMT_SQ905C: descr = "GSPCA SQ905C"; break;
1536 case V4L2_PIX_FMT_PJPG: descr = "GSPCA PJPG"; break;
1537 case V4L2_PIX_FMT_OV511: descr = "GSPCA OV511"; break;
1538 case V4L2_PIX_FMT_OV518: descr = "GSPCA OV518"; break;
1539 case V4L2_PIX_FMT_JPGL: descr = "JPEG Lite"; break;
1540 case V4L2_PIX_FMT_SE401: descr = "GSPCA SE401"; break;
1541 case V4L2_PIX_FMT_S5C_UYVY_JPG: descr = "S5C73MX interleaved UYVY/JPEG"; break;
1542 case V4L2_PIX_FMT_MT21C: descr = "Mediatek Compressed Format"; break;
1543 case V4L2_PIX_FMT_QC08C: descr = "QCOM Compressed 8-bit Format"; break;
1544 case V4L2_PIX_FMT_QC10C: descr = "QCOM Compressed 10-bit Format"; break;
1545 case V4L2_PIX_FMT_AJPG: descr = "Aspeed JPEG"; break;
1546 case V4L2_PIX_FMT_AV1_FRAME: descr = "AV1 Frame"; break;
1547 case V4L2_PIX_FMT_AV1: descr = "AV1 OBU Stream"; break;
1548 case V4L2_PIX_FMT_MT2110T: descr = "Mediatek 10bit Tile Mode"; break;
1549 case V4L2_PIX_FMT_MT2110R: descr = "Mediatek 10bit Raster Mode"; break;
1550 case V4L2_PIX_FMT_HEXTILE: descr = "Hextile Compressed Format"; break;
1551 case V4L2_PIX_FMT_PISP_COMP1_RGGB: descr = "PiSP 8b RGRG/GBGB mode1 compr"; break;
1552 case V4L2_PIX_FMT_PISP_COMP1_GRBG: descr = "PiSP 8b GRGR/BGBG mode1 compr"; break;
1553 case V4L2_PIX_FMT_PISP_COMP1_GBRG: descr = "PiSP 8b GBGB/RGRG mode1 compr"; break;
1554 case V4L2_PIX_FMT_PISP_COMP1_BGGR: descr = "PiSP 8b BGBG/GRGR mode1 compr"; break;
1555 case V4L2_PIX_FMT_PISP_COMP1_MONO: descr = "PiSP 8b monochrome mode1 compr"; break;
1556 case V4L2_PIX_FMT_PISP_COMP2_RGGB: descr = "PiSP 8b RGRG/GBGB mode2 compr"; break;
1557 case V4L2_PIX_FMT_PISP_COMP2_GRBG: descr = "PiSP 8b GRGR/BGBG mode2 compr"; break;
1558 case V4L2_PIX_FMT_PISP_COMP2_GBRG: descr = "PiSP 8b GBGB/RGRG mode2 compr"; break;
1559 case V4L2_PIX_FMT_PISP_COMP2_BGGR: descr = "PiSP 8b BGBG/GRGR mode2 compr"; break;
1560 case V4L2_PIX_FMT_PISP_COMP2_MONO: descr = "PiSP 8b monochrome mode2 compr"; break;
1561 default:
1562 if (fmt->description[0])
1563 return;
1564 WARN(1, "Unknown pixelformat 0x%08x\n", fmt->pixelformat);
1565 flags = 0;
1566 snprintf(fmt->description, sz, "%p4cc",
1567 &fmt->pixelformat);
1568 break;
1569 }
1570 }
1571
1572 if (fmt->type == V4L2_BUF_TYPE_META_CAPTURE) {
1573 switch (fmt->pixelformat) {
1574 case V4L2_META_FMT_GENERIC_8:
1575 case V4L2_META_FMT_GENERIC_CSI2_10:
1576 case V4L2_META_FMT_GENERIC_CSI2_12:
1577 case V4L2_META_FMT_GENERIC_CSI2_14:
1578 case V4L2_META_FMT_GENERIC_CSI2_16:
1579 case V4L2_META_FMT_GENERIC_CSI2_20:
1580 case V4L2_META_FMT_GENERIC_CSI2_24:
1581 fmt->flags |= V4L2_FMT_FLAG_META_LINE_BASED;
1582 break;
1583 default:
1584 fmt->flags &= ~V4L2_FMT_FLAG_META_LINE_BASED;
1585 }
1586 }
1587
1588 if (descr)
1589 WARN_ON(strscpy(fmt->description, descr, sz) < 0);
1590 fmt->flags |= flags;
1591 }
1592
v4l_enum_fmt(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1593 static int v4l_enum_fmt(const struct v4l2_ioctl_ops *ops, struct file *file,
1594 void *arg)
1595 {
1596 struct video_device *vdev = video_devdata(file);
1597 struct v4l2_fmtdesc *p = arg;
1598 int ret = check_fmt(file, p->type);
1599 u32 mbus_code;
1600 u32 cap_mask;
1601
1602 if (ret)
1603 return ret;
1604 ret = -EINVAL;
1605
1606 if (!(vdev->device_caps & V4L2_CAP_IO_MC))
1607 p->mbus_code = 0;
1608
1609 mbus_code = p->mbus_code;
1610 memset_after(p, 0, type);
1611 p->mbus_code = mbus_code;
1612
1613 switch (p->type) {
1614 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1615 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1616 cap_mask = V4L2_CAP_VIDEO_CAPTURE_MPLANE |
1617 V4L2_CAP_VIDEO_M2M_MPLANE;
1618 if (!!(vdev->device_caps & cap_mask) !=
1619 (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE))
1620 break;
1621
1622 if (unlikely(!ops->vidioc_enum_fmt_vid_cap))
1623 break;
1624 ret = ops->vidioc_enum_fmt_vid_cap(file, NULL, arg);
1625 break;
1626 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1627 if (unlikely(!ops->vidioc_enum_fmt_vid_overlay))
1628 break;
1629 ret = ops->vidioc_enum_fmt_vid_overlay(file, NULL, arg);
1630 break;
1631 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1632 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1633 cap_mask = V4L2_CAP_VIDEO_OUTPUT_MPLANE |
1634 V4L2_CAP_VIDEO_M2M_MPLANE;
1635 if (!!(vdev->device_caps & cap_mask) !=
1636 (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE))
1637 break;
1638
1639 if (unlikely(!ops->vidioc_enum_fmt_vid_out))
1640 break;
1641 ret = ops->vidioc_enum_fmt_vid_out(file, NULL, arg);
1642 break;
1643 case V4L2_BUF_TYPE_SDR_CAPTURE:
1644 if (unlikely(!ops->vidioc_enum_fmt_sdr_cap))
1645 break;
1646 ret = ops->vidioc_enum_fmt_sdr_cap(file, NULL, arg);
1647 break;
1648 case V4L2_BUF_TYPE_SDR_OUTPUT:
1649 if (unlikely(!ops->vidioc_enum_fmt_sdr_out))
1650 break;
1651 ret = ops->vidioc_enum_fmt_sdr_out(file, NULL, arg);
1652 break;
1653 case V4L2_BUF_TYPE_META_CAPTURE:
1654 if (unlikely(!ops->vidioc_enum_fmt_meta_cap))
1655 break;
1656 ret = ops->vidioc_enum_fmt_meta_cap(file, NULL, arg);
1657 break;
1658 case V4L2_BUF_TYPE_META_OUTPUT:
1659 if (unlikely(!ops->vidioc_enum_fmt_meta_out))
1660 break;
1661 ret = ops->vidioc_enum_fmt_meta_out(file, NULL, arg);
1662 break;
1663 }
1664 if (ret == 0)
1665 v4l_fill_fmtdesc(p);
1666 return ret;
1667 }
1668
v4l_pix_format_touch(struct v4l2_pix_format * p)1669 static void v4l_pix_format_touch(struct v4l2_pix_format *p)
1670 {
1671 /*
1672 * The v4l2_pix_format structure contains fields that make no sense for
1673 * touch. Set them to default values in this case.
1674 */
1675
1676 p->field = V4L2_FIELD_NONE;
1677 p->colorspace = V4L2_COLORSPACE_RAW;
1678 p->flags = 0;
1679 p->ycbcr_enc = 0;
1680 p->quantization = 0;
1681 p->xfer_func = 0;
1682 }
1683
v4l_g_fmt(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1684 static int v4l_g_fmt(const struct v4l2_ioctl_ops *ops, struct file *file,
1685 void *arg)
1686 {
1687 struct v4l2_format *p = arg;
1688 struct video_device *vfd = video_devdata(file);
1689 int ret = check_fmt(file, p->type);
1690
1691 if (ret)
1692 return ret;
1693
1694 memset(&p->fmt, 0, sizeof(p->fmt));
1695
1696 switch (p->type) {
1697 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1698 if (unlikely(!ops->vidioc_g_fmt_vid_cap))
1699 break;
1700 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1701 ret = ops->vidioc_g_fmt_vid_cap(file, NULL, arg);
1702 /* just in case the driver zeroed it again */
1703 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1704 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1705 v4l_pix_format_touch(&p->fmt.pix);
1706 return ret;
1707 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1708 return ops->vidioc_g_fmt_vid_cap_mplane(file, NULL, arg);
1709 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1710 return ops->vidioc_g_fmt_vid_overlay(file, NULL, arg);
1711 case V4L2_BUF_TYPE_VBI_CAPTURE:
1712 return ops->vidioc_g_fmt_vbi_cap(file, NULL, arg);
1713 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1714 return ops->vidioc_g_fmt_sliced_vbi_cap(file, NULL, arg);
1715 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1716 if (unlikely(!ops->vidioc_g_fmt_vid_out))
1717 break;
1718 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1719 ret = ops->vidioc_g_fmt_vid_out(file, NULL, arg);
1720 /* just in case the driver zeroed it again */
1721 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1722 return ret;
1723 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1724 return ops->vidioc_g_fmt_vid_out_mplane(file, NULL, arg);
1725 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1726 return ops->vidioc_g_fmt_vid_out_overlay(file, NULL, arg);
1727 case V4L2_BUF_TYPE_VBI_OUTPUT:
1728 return ops->vidioc_g_fmt_vbi_out(file, NULL, arg);
1729 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1730 return ops->vidioc_g_fmt_sliced_vbi_out(file, NULL, arg);
1731 case V4L2_BUF_TYPE_SDR_CAPTURE:
1732 return ops->vidioc_g_fmt_sdr_cap(file, NULL, arg);
1733 case V4L2_BUF_TYPE_SDR_OUTPUT:
1734 return ops->vidioc_g_fmt_sdr_out(file, NULL, arg);
1735 case V4L2_BUF_TYPE_META_CAPTURE:
1736 return ops->vidioc_g_fmt_meta_cap(file, NULL, arg);
1737 case V4L2_BUF_TYPE_META_OUTPUT:
1738 return ops->vidioc_g_fmt_meta_out(file, NULL, arg);
1739 }
1740 return -EINVAL;
1741 }
1742
v4l_s_fmt(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1743 static int v4l_s_fmt(const struct v4l2_ioctl_ops *ops, struct file *file,
1744 void *arg)
1745 {
1746 struct v4l2_format *p = arg;
1747 struct video_device *vfd = video_devdata(file);
1748 int ret = check_fmt(file, p->type);
1749 unsigned int i;
1750
1751 if (ret)
1752 return ret;
1753
1754 ret = v4l_enable_media_source(vfd);
1755 if (ret)
1756 return ret;
1757 v4l_sanitize_format(p);
1758
1759 switch (p->type) {
1760 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1761 if (unlikely(!ops->vidioc_s_fmt_vid_cap))
1762 break;
1763 memset_after(p, 0, fmt.pix);
1764 ret = ops->vidioc_s_fmt_vid_cap(file, NULL, arg);
1765 /* just in case the driver zeroed it again */
1766 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1767 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1768 v4l_pix_format_touch(&p->fmt.pix);
1769 return ret;
1770 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1771 if (unlikely(!ops->vidioc_s_fmt_vid_cap_mplane))
1772 break;
1773 memset_after(p, 0, fmt.pix_mp.xfer_func);
1774 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1775 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1776 0, bytesperline);
1777 return ops->vidioc_s_fmt_vid_cap_mplane(file, NULL, arg);
1778 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1779 if (unlikely(!ops->vidioc_s_fmt_vid_overlay))
1780 break;
1781 memset_after(p, 0, fmt.win);
1782 p->fmt.win.clips = NULL;
1783 p->fmt.win.clipcount = 0;
1784 p->fmt.win.bitmap = NULL;
1785 return ops->vidioc_s_fmt_vid_overlay(file, NULL, arg);
1786 case V4L2_BUF_TYPE_VBI_CAPTURE:
1787 if (unlikely(!ops->vidioc_s_fmt_vbi_cap))
1788 break;
1789 memset_after(p, 0, fmt.vbi.flags);
1790 return ops->vidioc_s_fmt_vbi_cap(file, NULL, arg);
1791 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1792 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_cap))
1793 break;
1794 memset_after(p, 0, fmt.sliced.io_size);
1795 return ops->vidioc_s_fmt_sliced_vbi_cap(file, NULL, arg);
1796 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1797 if (unlikely(!ops->vidioc_s_fmt_vid_out))
1798 break;
1799 memset_after(p, 0, fmt.pix);
1800 ret = ops->vidioc_s_fmt_vid_out(file, NULL, arg);
1801 /* just in case the driver zeroed it again */
1802 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1803 return ret;
1804 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1805 if (unlikely(!ops->vidioc_s_fmt_vid_out_mplane))
1806 break;
1807 memset_after(p, 0, fmt.pix_mp.xfer_func);
1808 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1809 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1810 0, bytesperline);
1811 return ops->vidioc_s_fmt_vid_out_mplane(file, NULL, arg);
1812 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1813 if (unlikely(!ops->vidioc_s_fmt_vid_out_overlay))
1814 break;
1815 memset_after(p, 0, fmt.win);
1816 p->fmt.win.clips = NULL;
1817 p->fmt.win.clipcount = 0;
1818 p->fmt.win.bitmap = NULL;
1819 return ops->vidioc_s_fmt_vid_out_overlay(file, NULL, arg);
1820 case V4L2_BUF_TYPE_VBI_OUTPUT:
1821 if (unlikely(!ops->vidioc_s_fmt_vbi_out))
1822 break;
1823 memset_after(p, 0, fmt.vbi.flags);
1824 return ops->vidioc_s_fmt_vbi_out(file, NULL, arg);
1825 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1826 if (unlikely(!ops->vidioc_s_fmt_sliced_vbi_out))
1827 break;
1828 memset_after(p, 0, fmt.sliced.io_size);
1829 return ops->vidioc_s_fmt_sliced_vbi_out(file, NULL, arg);
1830 case V4L2_BUF_TYPE_SDR_CAPTURE:
1831 if (unlikely(!ops->vidioc_s_fmt_sdr_cap))
1832 break;
1833 memset_after(p, 0, fmt.sdr.buffersize);
1834 return ops->vidioc_s_fmt_sdr_cap(file, NULL, arg);
1835 case V4L2_BUF_TYPE_SDR_OUTPUT:
1836 if (unlikely(!ops->vidioc_s_fmt_sdr_out))
1837 break;
1838 memset_after(p, 0, fmt.sdr.buffersize);
1839 return ops->vidioc_s_fmt_sdr_out(file, NULL, arg);
1840 case V4L2_BUF_TYPE_META_CAPTURE:
1841 if (unlikely(!ops->vidioc_s_fmt_meta_cap))
1842 break;
1843 memset_after(p, 0, fmt.meta);
1844 return ops->vidioc_s_fmt_meta_cap(file, NULL, arg);
1845 case V4L2_BUF_TYPE_META_OUTPUT:
1846 if (unlikely(!ops->vidioc_s_fmt_meta_out))
1847 break;
1848 memset_after(p, 0, fmt.meta);
1849 return ops->vidioc_s_fmt_meta_out(file, NULL, arg);
1850 }
1851 return -EINVAL;
1852 }
1853
v4l_try_fmt(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1854 static int v4l_try_fmt(const struct v4l2_ioctl_ops *ops, struct file *file,
1855 void *arg)
1856 {
1857 struct v4l2_format *p = arg;
1858 struct video_device *vfd = video_devdata(file);
1859 int ret = check_fmt(file, p->type);
1860 unsigned int i;
1861
1862 if (ret)
1863 return ret;
1864
1865 v4l_sanitize_format(p);
1866
1867 switch (p->type) {
1868 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1869 if (unlikely(!ops->vidioc_try_fmt_vid_cap))
1870 break;
1871 memset_after(p, 0, fmt.pix);
1872 ret = ops->vidioc_try_fmt_vid_cap(file, NULL, arg);
1873 /* just in case the driver zeroed it again */
1874 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1875 if (vfd->vfl_type == VFL_TYPE_TOUCH)
1876 v4l_pix_format_touch(&p->fmt.pix);
1877 return ret;
1878 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1879 if (unlikely(!ops->vidioc_try_fmt_vid_cap_mplane))
1880 break;
1881 memset_after(p, 0, fmt.pix_mp.xfer_func);
1882 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1883 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1884 0, bytesperline);
1885 return ops->vidioc_try_fmt_vid_cap_mplane(file, NULL, arg);
1886 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
1887 if (unlikely(!ops->vidioc_try_fmt_vid_overlay))
1888 break;
1889 memset_after(p, 0, fmt.win);
1890 p->fmt.win.clips = NULL;
1891 p->fmt.win.clipcount = 0;
1892 p->fmt.win.bitmap = NULL;
1893 return ops->vidioc_try_fmt_vid_overlay(file, NULL, arg);
1894 case V4L2_BUF_TYPE_VBI_CAPTURE:
1895 if (unlikely(!ops->vidioc_try_fmt_vbi_cap))
1896 break;
1897 memset_after(p, 0, fmt.vbi.flags);
1898 return ops->vidioc_try_fmt_vbi_cap(file, NULL, arg);
1899 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
1900 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_cap))
1901 break;
1902 memset_after(p, 0, fmt.sliced.io_size);
1903 return ops->vidioc_try_fmt_sliced_vbi_cap(file, NULL, arg);
1904 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1905 if (unlikely(!ops->vidioc_try_fmt_vid_out))
1906 break;
1907 memset_after(p, 0, fmt.pix);
1908 ret = ops->vidioc_try_fmt_vid_out(file, NULL, arg);
1909 /* just in case the driver zeroed it again */
1910 p->fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
1911 return ret;
1912 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1913 if (unlikely(!ops->vidioc_try_fmt_vid_out_mplane))
1914 break;
1915 memset_after(p, 0, fmt.pix_mp.xfer_func);
1916 for (i = 0; i < p->fmt.pix_mp.num_planes; i++)
1917 memset_after(&p->fmt.pix_mp.plane_fmt[i],
1918 0, bytesperline);
1919 return ops->vidioc_try_fmt_vid_out_mplane(file, NULL, arg);
1920 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
1921 if (unlikely(!ops->vidioc_try_fmt_vid_out_overlay))
1922 break;
1923 memset_after(p, 0, fmt.win);
1924 p->fmt.win.clips = NULL;
1925 p->fmt.win.clipcount = 0;
1926 p->fmt.win.bitmap = NULL;
1927 return ops->vidioc_try_fmt_vid_out_overlay(file, NULL, arg);
1928 case V4L2_BUF_TYPE_VBI_OUTPUT:
1929 if (unlikely(!ops->vidioc_try_fmt_vbi_out))
1930 break;
1931 memset_after(p, 0, fmt.vbi.flags);
1932 return ops->vidioc_try_fmt_vbi_out(file, NULL, arg);
1933 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
1934 if (unlikely(!ops->vidioc_try_fmt_sliced_vbi_out))
1935 break;
1936 memset_after(p, 0, fmt.sliced.io_size);
1937 return ops->vidioc_try_fmt_sliced_vbi_out(file, NULL, arg);
1938 case V4L2_BUF_TYPE_SDR_CAPTURE:
1939 if (unlikely(!ops->vidioc_try_fmt_sdr_cap))
1940 break;
1941 memset_after(p, 0, fmt.sdr.buffersize);
1942 return ops->vidioc_try_fmt_sdr_cap(file, NULL, arg);
1943 case V4L2_BUF_TYPE_SDR_OUTPUT:
1944 if (unlikely(!ops->vidioc_try_fmt_sdr_out))
1945 break;
1946 memset_after(p, 0, fmt.sdr.buffersize);
1947 return ops->vidioc_try_fmt_sdr_out(file, NULL, arg);
1948 case V4L2_BUF_TYPE_META_CAPTURE:
1949 if (unlikely(!ops->vidioc_try_fmt_meta_cap))
1950 break;
1951 memset_after(p, 0, fmt.meta);
1952 return ops->vidioc_try_fmt_meta_cap(file, NULL, arg);
1953 case V4L2_BUF_TYPE_META_OUTPUT:
1954 if (unlikely(!ops->vidioc_try_fmt_meta_out))
1955 break;
1956 memset_after(p, 0, fmt.meta);
1957 return ops->vidioc_try_fmt_meta_out(file, NULL, arg);
1958 }
1959 return -EINVAL;
1960 }
1961
v4l_streamon(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1962 static int v4l_streamon(const struct v4l2_ioctl_ops *ops, struct file *file,
1963 void *arg)
1964 {
1965 return ops->vidioc_streamon(file, NULL, *(unsigned int *)arg);
1966 }
1967
v4l_streamoff(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1968 static int v4l_streamoff(const struct v4l2_ioctl_ops *ops, struct file *file,
1969 void *arg)
1970 {
1971 return ops->vidioc_streamoff(file, NULL, *(unsigned int *)arg);
1972 }
1973
v4l_g_tuner(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1974 static int v4l_g_tuner(const struct v4l2_ioctl_ops *ops, struct file *file,
1975 void *arg)
1976 {
1977 struct video_device *vfd = video_devdata(file);
1978 struct v4l2_tuner *p = arg;
1979 int err;
1980
1981 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
1982 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1983 err = ops->vidioc_g_tuner(file, NULL, p);
1984 if (!err)
1985 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
1986 return err;
1987 }
1988
v4l_s_tuner(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)1989 static int v4l_s_tuner(const struct v4l2_ioctl_ops *ops, struct file *file,
1990 void *arg)
1991 {
1992 struct video_device *vfd = video_devdata(file);
1993 struct v4l2_tuner *p = arg;
1994 int ret;
1995
1996 ret = v4l_enable_media_source(vfd);
1997 if (ret)
1998 return ret;
1999 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2000 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2001 return ops->vidioc_s_tuner(file, NULL, p);
2002 }
2003
v4l_g_modulator(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2004 static int v4l_g_modulator(const struct v4l2_ioctl_ops *ops,
2005 struct file *file, void *arg)
2006 {
2007 struct video_device *vfd = video_devdata(file);
2008 struct v4l2_modulator *p = arg;
2009 int err;
2010
2011 if (vfd->vfl_type == VFL_TYPE_RADIO)
2012 p->type = V4L2_TUNER_RADIO;
2013
2014 err = ops->vidioc_g_modulator(file, NULL, p);
2015 if (!err)
2016 p->capability |= V4L2_TUNER_CAP_FREQ_BANDS;
2017 return err;
2018 }
2019
v4l_s_modulator(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2020 static int v4l_s_modulator(const struct v4l2_ioctl_ops *ops,
2021 struct file *file, void *arg)
2022 {
2023 struct video_device *vfd = video_devdata(file);
2024 struct v4l2_modulator *p = arg;
2025
2026 if (vfd->vfl_type == VFL_TYPE_RADIO)
2027 p->type = V4L2_TUNER_RADIO;
2028
2029 return ops->vidioc_s_modulator(file, NULL, p);
2030 }
2031
v4l_g_frequency(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2032 static int v4l_g_frequency(const struct v4l2_ioctl_ops *ops,
2033 struct file *file, void *arg)
2034 {
2035 struct video_device *vfd = video_devdata(file);
2036 struct v4l2_frequency *p = arg;
2037
2038 if (vfd->vfl_type == VFL_TYPE_SDR)
2039 p->type = V4L2_TUNER_SDR;
2040 else
2041 p->type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2042 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2043 return ops->vidioc_g_frequency(file, NULL, p);
2044 }
2045
v4l_s_frequency(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2046 static int v4l_s_frequency(const struct v4l2_ioctl_ops *ops,
2047 struct file *file, void *arg)
2048 {
2049 struct video_device *vfd = video_devdata(file);
2050 const struct v4l2_frequency *p = arg;
2051 enum v4l2_tuner_type type;
2052 int ret;
2053
2054 ret = v4l_enable_media_source(vfd);
2055 if (ret)
2056 return ret;
2057 if (vfd->vfl_type == VFL_TYPE_SDR) {
2058 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2059 return -EINVAL;
2060 } else {
2061 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2062 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2063 if (type != p->type)
2064 return -EINVAL;
2065 }
2066 return ops->vidioc_s_frequency(file, NULL, p);
2067 }
2068
v4l_enumstd(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2069 static int v4l_enumstd(const struct v4l2_ioctl_ops *ops, struct file *file,
2070 void *arg)
2071 {
2072 struct video_device *vfd = video_devdata(file);
2073 struct v4l2_standard *p = arg;
2074
2075 return v4l_video_std_enumstd(p, vfd->tvnorms);
2076 }
2077
v4l_s_std(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2078 static int v4l_s_std(const struct v4l2_ioctl_ops *ops, struct file *file,
2079 void *arg)
2080 {
2081 struct video_device *vfd = video_devdata(file);
2082 v4l2_std_id id = *(v4l2_std_id *)arg, norm;
2083 int ret;
2084
2085 ret = v4l_enable_media_source(vfd);
2086 if (ret)
2087 return ret;
2088 norm = id & vfd->tvnorms;
2089 if (vfd->tvnorms && !norm) /* Check if std is supported */
2090 return -EINVAL;
2091
2092 /* Calls the specific handler */
2093 return ops->vidioc_s_std(file, NULL, norm);
2094 }
2095
v4l_querystd(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2096 static int v4l_querystd(const struct v4l2_ioctl_ops *ops, struct file *file,
2097 void *arg)
2098 {
2099 struct video_device *vfd = video_devdata(file);
2100 v4l2_std_id *p = arg;
2101 int ret;
2102
2103 ret = v4l_enable_media_source(vfd);
2104 if (ret)
2105 return ret;
2106 /*
2107 * If no signal is detected, then the driver should return
2108 * V4L2_STD_UNKNOWN. Otherwise it should return tvnorms with
2109 * any standards that do not apply removed.
2110 *
2111 * This means that tuners, audio and video decoders can join
2112 * their efforts to improve the standards detection.
2113 */
2114 *p = vfd->tvnorms;
2115 return ops->vidioc_querystd(file, NULL, arg);
2116 }
2117
v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2118 static int v4l_s_hw_freq_seek(const struct v4l2_ioctl_ops *ops,
2119 struct file *file, void *arg)
2120 {
2121 struct video_device *vfd = video_devdata(file);
2122 struct v4l2_hw_freq_seek *p = arg;
2123 enum v4l2_tuner_type type;
2124 int ret;
2125
2126 ret = v4l_enable_media_source(vfd);
2127 if (ret)
2128 return ret;
2129 /* s_hw_freq_seek is not supported for SDR for now */
2130 if (vfd->vfl_type == VFL_TYPE_SDR)
2131 return -EINVAL;
2132
2133 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2134 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2135 if (p->type != type)
2136 return -EINVAL;
2137 return ops->vidioc_s_hw_freq_seek(file, NULL, p);
2138 }
2139
v4l_s_fbuf(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2140 static int v4l_s_fbuf(const struct v4l2_ioctl_ops *ops, struct file *file,
2141 void *arg)
2142 {
2143 struct v4l2_framebuffer *p = arg;
2144
2145 p->base = NULL;
2146 return ops->vidioc_s_fbuf(file, NULL, p);
2147 }
2148
v4l_overlay(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2149 static int v4l_overlay(const struct v4l2_ioctl_ops *ops, struct file *file,
2150 void *arg)
2151 {
2152 return ops->vidioc_overlay(file, NULL, *(unsigned int *)arg);
2153 }
2154
v4l_reqbufs(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2155 static int v4l_reqbufs(const struct v4l2_ioctl_ops *ops, struct file *file,
2156 void *arg)
2157 {
2158 struct video_device *vfd = video_devdata(file);
2159 struct v4l2_requestbuffers *p = arg;
2160 int ret = check_fmt(file, p->type);
2161
2162 if (ret)
2163 return ret;
2164
2165 memset_after(p, 0, flags);
2166
2167 p->capabilities = 0;
2168 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2169 p->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2170
2171 return ops->vidioc_reqbufs(file, NULL, p);
2172 }
2173
v4l_querybuf(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2174 static int v4l_querybuf(const struct v4l2_ioctl_ops *ops, struct file *file,
2175 void *arg)
2176 {
2177 struct v4l2_buffer *p = arg;
2178 int ret = check_fmt(file, p->type);
2179
2180 return ret ? ret : ops->vidioc_querybuf(file, NULL, p);
2181 }
2182
v4l_qbuf(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2183 static int v4l_qbuf(const struct v4l2_ioctl_ops *ops, struct file *file,
2184 void *arg)
2185 {
2186 struct v4l2_buffer *p = arg;
2187 int ret = check_fmt(file, p->type);
2188
2189 return ret ? ret : ops->vidioc_qbuf(file, NULL, p);
2190 }
2191
v4l_dqbuf(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2192 static int v4l_dqbuf(const struct v4l2_ioctl_ops *ops, struct file *file,
2193 void *arg)
2194 {
2195 struct v4l2_buffer *p = arg;
2196 int ret = check_fmt(file, p->type);
2197
2198 return ret ? ret : ops->vidioc_dqbuf(file, NULL, p);
2199 }
2200
v4l_create_bufs(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2201 static int v4l_create_bufs(const struct v4l2_ioctl_ops *ops,
2202 struct file *file, void *arg)
2203 {
2204 struct video_device *vfd = video_devdata(file);
2205 struct v4l2_create_buffers *create = arg;
2206 int ret = check_fmt(file, create->format.type);
2207
2208 if (ret)
2209 return ret;
2210
2211 memset_after(create, 0, flags);
2212
2213 v4l_sanitize_format(&create->format);
2214
2215 create->capabilities = 0;
2216 if (is_valid_ioctl(vfd, VIDIOC_REMOVE_BUFS))
2217 create->capabilities = V4L2_BUF_CAP_SUPPORTS_REMOVE_BUFS;
2218
2219 ret = ops->vidioc_create_bufs(file, NULL, create);
2220
2221 if (create->format.type == V4L2_BUF_TYPE_VIDEO_CAPTURE ||
2222 create->format.type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
2223 create->format.fmt.pix.priv = V4L2_PIX_FMT_PRIV_MAGIC;
2224
2225 return ret;
2226 }
2227
v4l_prepare_buf(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2228 static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
2229 struct file *file, void *arg)
2230 {
2231 struct v4l2_buffer *b = arg;
2232 int ret = check_fmt(file, b->type);
2233
2234 return ret ? ret : ops->vidioc_prepare_buf(file, NULL, b);
2235 }
2236
v4l_remove_bufs(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2237 static int v4l_remove_bufs(const struct v4l2_ioctl_ops *ops,
2238 struct file *file, void *arg)
2239 {
2240 struct v4l2_remove_buffers *remove = arg;
2241
2242 if (ops->vidioc_remove_bufs)
2243 return ops->vidioc_remove_bufs(file, NULL, remove);
2244
2245 return -ENOTTY;
2246 }
2247
v4l_g_parm(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2248 static int v4l_g_parm(const struct v4l2_ioctl_ops *ops, struct file *file,
2249 void *arg)
2250 {
2251 struct video_device *vfd = video_devdata(file);
2252 struct v4l2_streamparm *p = arg;
2253 v4l2_std_id std;
2254 int ret = check_fmt(file, p->type);
2255
2256 if (ret)
2257 return ret;
2258 if (ops->vidioc_g_parm)
2259 return ops->vidioc_g_parm(file, NULL, p);
2260 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE &&
2261 p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2262 return -EINVAL;
2263 if (vfd->device_caps & V4L2_CAP_READWRITE)
2264 p->parm.capture.readbuffers = 2;
2265 ret = ops->vidioc_g_std(file, NULL, &std);
2266 if (ret == 0)
2267 v4l2_video_std_frame_period(std, &p->parm.capture.timeperframe);
2268 return ret;
2269 }
2270
v4l_s_parm(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2271 static int v4l_s_parm(const struct v4l2_ioctl_ops *ops, struct file *file,
2272 void *arg)
2273 {
2274 struct v4l2_streamparm *p = arg;
2275 int ret = check_fmt(file, p->type);
2276
2277 if (ret)
2278 return ret;
2279
2280 /* Note: extendedmode is never used in drivers */
2281 if (V4L2_TYPE_IS_OUTPUT(p->type)) {
2282 memset(p->parm.output.reserved, 0,
2283 sizeof(p->parm.output.reserved));
2284 p->parm.output.extendedmode = 0;
2285 p->parm.output.outputmode &= V4L2_MODE_HIGHQUALITY;
2286 } else {
2287 memset(p->parm.capture.reserved, 0,
2288 sizeof(p->parm.capture.reserved));
2289 p->parm.capture.extendedmode = 0;
2290 p->parm.capture.capturemode &= V4L2_MODE_HIGHQUALITY;
2291 }
2292 return ops->vidioc_s_parm(file, NULL, p);
2293 }
2294
v4l_queryctrl(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2295 static int v4l_queryctrl(const struct v4l2_ioctl_ops *ops, struct file *file,
2296 void *arg)
2297 {
2298 struct video_device *vfd = video_devdata(file);
2299 struct v4l2_query_ext_ctrl qec = {};
2300 struct v4l2_queryctrl *p = arg;
2301 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2302 int ret;
2303
2304 if (vfh && vfh->ctrl_handler)
2305 return v4l2_queryctrl(vfh->ctrl_handler, p);
2306 if (vfd->ctrl_handler)
2307 return v4l2_queryctrl(vfd->ctrl_handler, p);
2308 if (!ops->vidioc_query_ext_ctrl)
2309 return -ENOTTY;
2310
2311 /* Simulate query_ext_ctr using query_ctrl. */
2312 qec.id = p->id;
2313 ret = ops->vidioc_query_ext_ctrl(file, NULL, &qec);
2314 if (ret)
2315 return ret;
2316 v4l2_query_ext_ctrl_to_v4l2_queryctrl(p, &qec);
2317 return ret;
2318 }
2319
v4l_query_ext_ctrl(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2320 static int v4l_query_ext_ctrl(const struct v4l2_ioctl_ops *ops,
2321 struct file *file, void *arg)
2322 {
2323 struct video_device *vfd = video_devdata(file);
2324 struct v4l2_query_ext_ctrl *p = arg;
2325 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2326
2327 if (vfh && vfh->ctrl_handler)
2328 return v4l2_query_ext_ctrl(vfh->ctrl_handler, p);
2329 if (vfd->ctrl_handler)
2330 return v4l2_query_ext_ctrl(vfd->ctrl_handler, p);
2331 if (ops->vidioc_query_ext_ctrl)
2332 return ops->vidioc_query_ext_ctrl(file, NULL, p);
2333 return -ENOTTY;
2334 }
2335
v4l_querymenu(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2336 static int v4l_querymenu(const struct v4l2_ioctl_ops *ops, struct file *file,
2337 void *arg)
2338 {
2339 struct video_device *vfd = video_devdata(file);
2340 struct v4l2_querymenu *p = arg;
2341 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2342
2343 if (vfh && vfh->ctrl_handler)
2344 return v4l2_querymenu(vfh->ctrl_handler, p);
2345 if (vfd->ctrl_handler)
2346 return v4l2_querymenu(vfd->ctrl_handler, p);
2347 if (ops->vidioc_querymenu)
2348 return ops->vidioc_querymenu(file, NULL, p);
2349 return -ENOTTY;
2350 }
2351
v4l_g_ctrl(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2352 static int v4l_g_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file,
2353 void *arg)
2354 {
2355 struct video_device *vfd = video_devdata(file);
2356 struct v4l2_control *p = arg;
2357 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2358 struct v4l2_ext_controls ctrls;
2359 struct v4l2_ext_control ctrl;
2360
2361 if (vfh && vfh->ctrl_handler)
2362 return v4l2_g_ctrl(vfh->ctrl_handler, p);
2363 if (vfd->ctrl_handler)
2364 return v4l2_g_ctrl(vfd->ctrl_handler, p);
2365 if (ops->vidioc_g_ext_ctrls == NULL)
2366 return -ENOTTY;
2367
2368 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2369 ctrls.count = 1;
2370 ctrls.controls = &ctrl;
2371 ctrl.id = p->id;
2372 ctrl.value = p->value;
2373 if (check_ext_ctrls(&ctrls, VIDIOC_G_CTRL)) {
2374 int ret = ops->vidioc_g_ext_ctrls(file, NULL, &ctrls);
2375
2376 if (ret == 0)
2377 p->value = ctrl.value;
2378 return ret;
2379 }
2380 return -EINVAL;
2381 }
2382
v4l_s_ctrl(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2383 static int v4l_s_ctrl(const struct v4l2_ioctl_ops *ops, struct file *file,
2384 void *arg)
2385 {
2386 struct video_device *vfd = video_devdata(file);
2387 struct v4l2_control *p = arg;
2388 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2389 struct v4l2_ext_controls ctrls;
2390 struct v4l2_ext_control ctrl;
2391 int ret;
2392
2393 if (vfh && vfh->ctrl_handler)
2394 return v4l2_s_ctrl(vfh, vfh->ctrl_handler, p);
2395 if (vfd->ctrl_handler)
2396 return v4l2_s_ctrl(NULL, vfd->ctrl_handler, p);
2397 if (ops->vidioc_s_ext_ctrls == NULL)
2398 return -ENOTTY;
2399
2400 ctrls.which = V4L2_CTRL_ID2WHICH(p->id);
2401 ctrls.count = 1;
2402 ctrls.controls = &ctrl;
2403 ctrl.id = p->id;
2404 ctrl.value = p->value;
2405 if (!check_ext_ctrls(&ctrls, VIDIOC_S_CTRL))
2406 return -EINVAL;
2407 ret = ops->vidioc_s_ext_ctrls(file, NULL, &ctrls);
2408 p->value = ctrl.value;
2409 return ret;
2410 }
2411
v4l_g_ext_ctrls(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2412 static int v4l_g_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2413 struct file *file, void *arg)
2414 {
2415 struct video_device *vfd = video_devdata(file);
2416 struct v4l2_ext_controls *p = arg;
2417 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2418
2419 p->error_idx = p->count;
2420 if (vfh && vfh->ctrl_handler)
2421 return v4l2_g_ext_ctrls(vfh->ctrl_handler,
2422 vfd, vfd->v4l2_dev->mdev, p);
2423 if (vfd->ctrl_handler)
2424 return v4l2_g_ext_ctrls(vfd->ctrl_handler,
2425 vfd, vfd->v4l2_dev->mdev, p);
2426 if (ops->vidioc_g_ext_ctrls == NULL)
2427 return -ENOTTY;
2428 return check_ext_ctrls(p, VIDIOC_G_EXT_CTRLS) ?
2429 ops->vidioc_g_ext_ctrls(file, NULL, p) : -EINVAL;
2430 }
2431
v4l_s_ext_ctrls(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2432 static int v4l_s_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2433 struct file *file, void *arg)
2434 {
2435 struct video_device *vfd = video_devdata(file);
2436 struct v4l2_ext_controls *p = arg;
2437 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2438
2439 p->error_idx = p->count;
2440 if (vfh && vfh->ctrl_handler)
2441 return v4l2_s_ext_ctrls(vfh, vfh->ctrl_handler,
2442 vfd, vfd->v4l2_dev->mdev, p);
2443 if (vfd->ctrl_handler)
2444 return v4l2_s_ext_ctrls(NULL, vfd->ctrl_handler,
2445 vfd, vfd->v4l2_dev->mdev, p);
2446 if (ops->vidioc_s_ext_ctrls == NULL)
2447 return -ENOTTY;
2448 return check_ext_ctrls(p, VIDIOC_S_EXT_CTRLS) ?
2449 ops->vidioc_s_ext_ctrls(file, NULL, p) : -EINVAL;
2450 }
2451
v4l_try_ext_ctrls(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2452 static int v4l_try_ext_ctrls(const struct v4l2_ioctl_ops *ops,
2453 struct file *file, void *arg)
2454 {
2455 struct video_device *vfd = video_devdata(file);
2456 struct v4l2_ext_controls *p = arg;
2457 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2458
2459 p->error_idx = p->count;
2460 if (vfh && vfh->ctrl_handler)
2461 return v4l2_try_ext_ctrls(vfh->ctrl_handler,
2462 vfd, vfd->v4l2_dev->mdev, p);
2463 if (vfd->ctrl_handler)
2464 return v4l2_try_ext_ctrls(vfd->ctrl_handler,
2465 vfd, vfd->v4l2_dev->mdev, p);
2466 if (ops->vidioc_try_ext_ctrls == NULL)
2467 return -ENOTTY;
2468 return check_ext_ctrls(p, VIDIOC_TRY_EXT_CTRLS) ?
2469 ops->vidioc_try_ext_ctrls(file, NULL, p) : -EINVAL;
2470 }
2471
2472 /*
2473 * The selection API specified originally that the _MPLANE buffer types
2474 * shouldn't be used. The reasons for this are lost in the mists of time
2475 * (or just really crappy memories). Regardless, this is really annoying
2476 * for userspace. So to keep things simple we map _MPLANE buffer types
2477 * to their 'regular' counterparts before calling the driver. And we
2478 * restore it afterwards. This way applications can use either buffer
2479 * type and drivers don't need to check for both.
2480 */
v4l_g_selection(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2481 static int v4l_g_selection(const struct v4l2_ioctl_ops *ops,
2482 struct file *file, void *arg)
2483 {
2484 struct v4l2_selection *p = arg;
2485 u32 old_type = p->type;
2486 int ret;
2487
2488 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2489 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2490 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2491 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2492 ret = ops->vidioc_g_selection(file, NULL, p);
2493 p->type = old_type;
2494 return ret;
2495 }
2496
v4l_s_selection(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2497 static int v4l_s_selection(const struct v4l2_ioctl_ops *ops,
2498 struct file *file, void *arg)
2499 {
2500 struct v4l2_selection *p = arg;
2501 u32 old_type = p->type;
2502 int ret;
2503
2504 if (p->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2505 p->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2506 else if (p->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2507 p->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2508 ret = ops->vidioc_s_selection(file, NULL, p);
2509 p->type = old_type;
2510 return ret;
2511 }
2512
v4l_g_crop(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2513 static int v4l_g_crop(const struct v4l2_ioctl_ops *ops, struct file *file,
2514 void *arg)
2515 {
2516 struct video_device *vfd = video_devdata(file);
2517 struct v4l2_crop *p = arg;
2518 struct v4l2_selection s = {
2519 .type = p->type,
2520 };
2521 int ret;
2522
2523 /* simulate capture crop using selection api */
2524
2525 /* crop means compose for output devices */
2526 if (V4L2_TYPE_IS_OUTPUT(p->type))
2527 s.target = V4L2_SEL_TGT_COMPOSE;
2528 else
2529 s.target = V4L2_SEL_TGT_CROP;
2530
2531 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2532 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2533 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2534
2535 ret = v4l_g_selection(ops, file, &s);
2536
2537 /* copying results to old structure on success */
2538 if (!ret)
2539 p->c = s.r;
2540 return ret;
2541 }
2542
v4l_s_crop(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2543 static int v4l_s_crop(const struct v4l2_ioctl_ops *ops, struct file *file,
2544 void *arg)
2545 {
2546 struct video_device *vfd = video_devdata(file);
2547 struct v4l2_crop *p = arg;
2548 struct v4l2_selection s = {
2549 .type = p->type,
2550 .r = p->c,
2551 };
2552
2553 /* simulate capture crop using selection api */
2554
2555 /* crop means compose for output devices */
2556 if (V4L2_TYPE_IS_OUTPUT(p->type))
2557 s.target = V4L2_SEL_TGT_COMPOSE;
2558 else
2559 s.target = V4L2_SEL_TGT_CROP;
2560
2561 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2562 s.target = s.target == V4L2_SEL_TGT_COMPOSE ?
2563 V4L2_SEL_TGT_CROP : V4L2_SEL_TGT_COMPOSE;
2564
2565 return v4l_s_selection(ops, file, &s);
2566 }
2567
v4l_cropcap(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2568 static int v4l_cropcap(const struct v4l2_ioctl_ops *ops, struct file *file,
2569 void *arg)
2570 {
2571 struct video_device *vfd = video_devdata(file);
2572 struct v4l2_cropcap *p = arg;
2573 struct v4l2_selection s = { .type = p->type };
2574 int ret = 0;
2575
2576 /* setting trivial pixelaspect */
2577 p->pixelaspect.numerator = 1;
2578 p->pixelaspect.denominator = 1;
2579
2580 if (s.type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
2581 s.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
2582 else if (s.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
2583 s.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
2584
2585 /*
2586 * The determine_valid_ioctls() call already should ensure
2587 * that this can never happen, but just in case...
2588 */
2589 if (WARN_ON(!ops->vidioc_g_selection))
2590 return -ENOTTY;
2591
2592 if (ops->vidioc_g_pixelaspect)
2593 ret = ops->vidioc_g_pixelaspect(file, NULL, s.type,
2594 &p->pixelaspect);
2595
2596 /*
2597 * Ignore ENOTTY or ENOIOCTLCMD error returns, just use the
2598 * square pixel aspect ratio in that case.
2599 */
2600 if (ret && ret != -ENOTTY && ret != -ENOIOCTLCMD)
2601 return ret;
2602
2603 /* Use g_selection() to fill in the bounds and defrect rectangles */
2604
2605 /* obtaining bounds */
2606 if (V4L2_TYPE_IS_OUTPUT(p->type))
2607 s.target = V4L2_SEL_TGT_COMPOSE_BOUNDS;
2608 else
2609 s.target = V4L2_SEL_TGT_CROP_BOUNDS;
2610
2611 if (test_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags))
2612 s.target = s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS ?
2613 V4L2_SEL_TGT_CROP_BOUNDS : V4L2_SEL_TGT_COMPOSE_BOUNDS;
2614
2615 ret = v4l_g_selection(ops, file, &s);
2616 if (ret)
2617 return ret;
2618 p->bounds = s.r;
2619
2620 /* obtaining defrect */
2621 if (s.target == V4L2_SEL_TGT_COMPOSE_BOUNDS)
2622 s.target = V4L2_SEL_TGT_COMPOSE_DEFAULT;
2623 else
2624 s.target = V4L2_SEL_TGT_CROP_DEFAULT;
2625
2626 ret = v4l_g_selection(ops, file, &s);
2627 if (ret)
2628 return ret;
2629 p->defrect = s.r;
2630
2631 return 0;
2632 }
2633
v4l_log_status(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2634 static int v4l_log_status(const struct v4l2_ioctl_ops *ops, struct file *file,
2635 void *arg)
2636 {
2637 struct video_device *vfd = video_devdata(file);
2638 int ret;
2639
2640 if (vfd->v4l2_dev)
2641 pr_info("%s: ================= START STATUS =================\n",
2642 vfd->v4l2_dev->name);
2643 ret = ops->vidioc_log_status(file, NULL);
2644 if (vfd->v4l2_dev)
2645 pr_info("%s: ================== END STATUS ==================\n",
2646 vfd->v4l2_dev->name);
2647 return ret;
2648 }
2649
v4l_dbg_g_register(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2650 static int v4l_dbg_g_register(const struct v4l2_ioctl_ops *ops,
2651 struct file *file, void *arg)
2652 {
2653 #ifdef CONFIG_VIDEO_ADV_DEBUG
2654 struct v4l2_dbg_register *p = arg;
2655 struct video_device *vfd = video_devdata(file);
2656 struct v4l2_subdev *sd;
2657 int idx = 0;
2658
2659 if (!capable(CAP_SYS_ADMIN))
2660 return -EPERM;
2661 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2662 if (vfd->v4l2_dev == NULL)
2663 return -EINVAL;
2664 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2665 if (p->match.addr == idx++)
2666 return v4l2_subdev_call(sd, core, g_register, p);
2667 return -EINVAL;
2668 }
2669 if (ops->vidioc_g_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2670 (ops->vidioc_g_chip_info || p->match.addr == 0))
2671 return ops->vidioc_g_register(file, NULL, p);
2672 return -EINVAL;
2673 #else
2674 return -ENOTTY;
2675 #endif
2676 }
2677
v4l_dbg_s_register(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2678 static int v4l_dbg_s_register(const struct v4l2_ioctl_ops *ops,
2679 struct file *file, void *arg)
2680 {
2681 #ifdef CONFIG_VIDEO_ADV_DEBUG
2682 const struct v4l2_dbg_register *p = arg;
2683 struct video_device *vfd = video_devdata(file);
2684 struct v4l2_subdev *sd;
2685 int idx = 0;
2686
2687 if (!capable(CAP_SYS_ADMIN))
2688 return -EPERM;
2689 if (p->match.type == V4L2_CHIP_MATCH_SUBDEV) {
2690 if (vfd->v4l2_dev == NULL)
2691 return -EINVAL;
2692 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev)
2693 if (p->match.addr == idx++)
2694 return v4l2_subdev_call(sd, core, s_register, p);
2695 return -EINVAL;
2696 }
2697 if (ops->vidioc_s_register && p->match.type == V4L2_CHIP_MATCH_BRIDGE &&
2698 (ops->vidioc_g_chip_info || p->match.addr == 0))
2699 return ops->vidioc_s_register(file, NULL, p);
2700 return -EINVAL;
2701 #else
2702 return -ENOTTY;
2703 #endif
2704 }
2705
v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2706 static int v4l_dbg_g_chip_info(const struct v4l2_ioctl_ops *ops,
2707 struct file *file, void *arg)
2708 {
2709 #ifdef CONFIG_VIDEO_ADV_DEBUG
2710 struct video_device *vfd = video_devdata(file);
2711 struct v4l2_dbg_chip_info *p = arg;
2712 struct v4l2_subdev *sd;
2713 int idx = 0;
2714
2715 switch (p->match.type) {
2716 case V4L2_CHIP_MATCH_BRIDGE:
2717 if (ops->vidioc_s_register)
2718 p->flags |= V4L2_CHIP_FL_WRITABLE;
2719 if (ops->vidioc_g_register)
2720 p->flags |= V4L2_CHIP_FL_READABLE;
2721 strscpy(p->name, vfd->v4l2_dev->name, sizeof(p->name));
2722 if (ops->vidioc_g_chip_info)
2723 return ops->vidioc_g_chip_info(file, NULL, arg);
2724 if (p->match.addr)
2725 return -EINVAL;
2726 return 0;
2727
2728 case V4L2_CHIP_MATCH_SUBDEV:
2729 if (vfd->v4l2_dev == NULL)
2730 break;
2731 v4l2_device_for_each_subdev(sd, vfd->v4l2_dev) {
2732 if (p->match.addr != idx++)
2733 continue;
2734 if (sd->ops->core && sd->ops->core->s_register)
2735 p->flags |= V4L2_CHIP_FL_WRITABLE;
2736 if (sd->ops->core && sd->ops->core->g_register)
2737 p->flags |= V4L2_CHIP_FL_READABLE;
2738 strscpy(p->name, sd->name, sizeof(p->name));
2739 return 0;
2740 }
2741 break;
2742 }
2743 return -EINVAL;
2744 #else
2745 return -ENOTTY;
2746 #endif
2747 }
2748
v4l_dqevent(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2749 static int v4l_dqevent(const struct v4l2_ioctl_ops *ops, struct file *file,
2750 void *arg)
2751 {
2752 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2753
2754 return v4l2_event_dequeue(vfh, arg, file->f_flags & O_NONBLOCK);
2755 }
2756
v4l_subscribe_event(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2757 static int v4l_subscribe_event(const struct v4l2_ioctl_ops *ops,
2758 struct file *file, void *arg)
2759 {
2760 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2761
2762 return ops->vidioc_subscribe_event(vfh, arg);
2763 }
2764
v4l_unsubscribe_event(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2765 static int v4l_unsubscribe_event(const struct v4l2_ioctl_ops *ops,
2766 struct file *file, void *arg)
2767 {
2768 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
2769
2770 return ops->vidioc_unsubscribe_event(vfh, arg);
2771 }
2772
v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2773 static int v4l_g_sliced_vbi_cap(const struct v4l2_ioctl_ops *ops,
2774 struct file *file, void *arg)
2775 {
2776 struct v4l2_sliced_vbi_cap *p = arg;
2777 int ret = check_fmt(file, p->type);
2778
2779 if (ret)
2780 return ret;
2781
2782 /* Clear up to type, everything after type is zeroed already */
2783 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
2784
2785 return ops->vidioc_g_sliced_vbi_cap(file, NULL, p);
2786 }
2787
v4l_enum_freq_bands(const struct v4l2_ioctl_ops * ops,struct file * file,void * arg)2788 static int v4l_enum_freq_bands(const struct v4l2_ioctl_ops *ops,
2789 struct file *file, void *arg)
2790 {
2791 struct video_device *vfd = video_devdata(file);
2792 struct v4l2_frequency_band *p = arg;
2793 enum v4l2_tuner_type type;
2794 int err;
2795
2796 if (vfd->vfl_type == VFL_TYPE_SDR) {
2797 if (p->type != V4L2_TUNER_SDR && p->type != V4L2_TUNER_RF)
2798 return -EINVAL;
2799 type = p->type;
2800 } else {
2801 type = (vfd->vfl_type == VFL_TYPE_RADIO) ?
2802 V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
2803 if (type != p->type)
2804 return -EINVAL;
2805 }
2806 if (ops->vidioc_enum_freq_bands) {
2807 err = ops->vidioc_enum_freq_bands(file, NULL, p);
2808 if (err != -ENOTTY)
2809 return err;
2810 }
2811 if (is_valid_ioctl(vfd, VIDIOC_G_TUNER)) {
2812 struct v4l2_tuner t = {
2813 .index = p->tuner,
2814 .type = type,
2815 };
2816
2817 if (p->index)
2818 return -EINVAL;
2819 err = ops->vidioc_g_tuner(file, NULL, &t);
2820 if (err)
2821 return err;
2822 p->capability = t.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2823 p->rangelow = t.rangelow;
2824 p->rangehigh = t.rangehigh;
2825 p->modulation = (type == V4L2_TUNER_RADIO) ?
2826 V4L2_BAND_MODULATION_FM : V4L2_BAND_MODULATION_VSB;
2827 return 0;
2828 }
2829 if (is_valid_ioctl(vfd, VIDIOC_G_MODULATOR)) {
2830 struct v4l2_modulator m = {
2831 .index = p->tuner,
2832 };
2833
2834 if (type != V4L2_TUNER_RADIO)
2835 return -EINVAL;
2836 if (p->index)
2837 return -EINVAL;
2838 err = ops->vidioc_g_modulator(file, NULL, &m);
2839 if (err)
2840 return err;
2841 p->capability = m.capability | V4L2_TUNER_CAP_FREQ_BANDS;
2842 p->rangelow = m.rangelow;
2843 p->rangehigh = m.rangehigh;
2844 p->modulation = V4L2_BAND_MODULATION_FM;
2845 return 0;
2846 }
2847 return -ENOTTY;
2848 }
2849
2850 struct v4l2_ioctl_info {
2851 unsigned int ioctl;
2852 u32 flags;
2853 const char * const name;
2854 int (*func)(const struct v4l2_ioctl_ops *ops, struct file *file,
2855 void *p);
2856 void (*debug)(const void *arg, bool write_only);
2857 };
2858
2859 /* This control needs a priority check */
2860 #define INFO_FL_PRIO (1 << 0)
2861 /* This control can be valid if the filehandle passes a control handler. */
2862 #define INFO_FL_CTRL (1 << 1)
2863 /* Queuing ioctl */
2864 #define INFO_FL_QUEUE (1 << 2)
2865 /* Always copy back result, even on error */
2866 #define INFO_FL_ALWAYS_COPY (1 << 3)
2867 /* Zero struct from after the field to the end */
2868 #define INFO_FL_CLEAR(v4l2_struct, field) \
2869 ((offsetof(struct v4l2_struct, field) + \
2870 sizeof_field(struct v4l2_struct, field)) << 16)
2871 #define INFO_FL_CLEAR_MASK (_IOC_SIZEMASK << 16)
2872
2873 #define DEFINE_V4L_STUB_FUNC(_vidioc) \
2874 static int v4l_stub_ ## _vidioc( \
2875 const struct v4l2_ioctl_ops *ops, \
2876 struct file *file, void *p) \
2877 { \
2878 return ops->vidioc_ ## _vidioc(file, NULL, p); \
2879 }
2880
2881 #define IOCTL_INFO(_ioctl, _func, _debug, _flags) \
2882 [_IOC_NR(_ioctl)] = { \
2883 .ioctl = _ioctl, \
2884 .flags = _flags, \
2885 .name = #_ioctl, \
2886 .func = _func, \
2887 .debug = _debug, \
2888 }
2889
2890 DEFINE_V4L_STUB_FUNC(g_fbuf)
2891 DEFINE_V4L_STUB_FUNC(expbuf)
2892 DEFINE_V4L_STUB_FUNC(g_std)
2893 DEFINE_V4L_STUB_FUNC(g_audio)
2894 DEFINE_V4L_STUB_FUNC(s_audio)
2895 DEFINE_V4L_STUB_FUNC(g_edid)
2896 DEFINE_V4L_STUB_FUNC(s_edid)
2897 DEFINE_V4L_STUB_FUNC(g_audout)
2898 DEFINE_V4L_STUB_FUNC(s_audout)
2899 DEFINE_V4L_STUB_FUNC(g_jpegcomp)
2900 DEFINE_V4L_STUB_FUNC(s_jpegcomp)
2901 DEFINE_V4L_STUB_FUNC(enumaudio)
2902 DEFINE_V4L_STUB_FUNC(enumaudout)
2903 DEFINE_V4L_STUB_FUNC(enum_framesizes)
2904 DEFINE_V4L_STUB_FUNC(enum_frameintervals)
2905 DEFINE_V4L_STUB_FUNC(g_enc_index)
2906 DEFINE_V4L_STUB_FUNC(encoder_cmd)
2907 DEFINE_V4L_STUB_FUNC(try_encoder_cmd)
2908 DEFINE_V4L_STUB_FUNC(decoder_cmd)
2909 DEFINE_V4L_STUB_FUNC(try_decoder_cmd)
2910 DEFINE_V4L_STUB_FUNC(s_dv_timings)
2911 DEFINE_V4L_STUB_FUNC(g_dv_timings)
2912 DEFINE_V4L_STUB_FUNC(enum_dv_timings)
2913 DEFINE_V4L_STUB_FUNC(query_dv_timings)
2914 DEFINE_V4L_STUB_FUNC(dv_timings_cap)
2915
2916 static const struct v4l2_ioctl_info v4l2_ioctls[] = {
2917 IOCTL_INFO(VIDIOC_QUERYCAP, v4l_querycap, v4l_print_querycap, 0),
2918 IOCTL_INFO(VIDIOC_ENUM_FMT, v4l_enum_fmt, v4l_print_fmtdesc, 0),
2919 IOCTL_INFO(VIDIOC_G_FMT, v4l_g_fmt, v4l_print_format, 0),
2920 IOCTL_INFO(VIDIOC_S_FMT, v4l_s_fmt, v4l_print_format, INFO_FL_PRIO),
2921 IOCTL_INFO(VIDIOC_REQBUFS, v4l_reqbufs, v4l_print_requestbuffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2922 IOCTL_INFO(VIDIOC_QUERYBUF, v4l_querybuf, v4l_print_buffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_buffer, length)),
2923 IOCTL_INFO(VIDIOC_G_FBUF, v4l_stub_g_fbuf, v4l_print_framebuffer, 0),
2924 IOCTL_INFO(VIDIOC_S_FBUF, v4l_s_fbuf, v4l_print_framebuffer, INFO_FL_PRIO),
2925 IOCTL_INFO(VIDIOC_OVERLAY, v4l_overlay, v4l_print_u32, INFO_FL_PRIO),
2926 IOCTL_INFO(VIDIOC_QBUF, v4l_qbuf, v4l_print_buffer, INFO_FL_QUEUE),
2927 IOCTL_INFO(VIDIOC_EXPBUF, v4l_stub_expbuf, v4l_print_exportbuffer, INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_exportbuffer, flags)),
2928 IOCTL_INFO(VIDIOC_DQBUF, v4l_dqbuf, v4l_print_buffer, INFO_FL_QUEUE),
2929 IOCTL_INFO(VIDIOC_STREAMON, v4l_streamon, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2930 IOCTL_INFO(VIDIOC_STREAMOFF, v4l_streamoff, v4l_print_buftype, INFO_FL_PRIO | INFO_FL_QUEUE),
2931 IOCTL_INFO(VIDIOC_G_PARM, v4l_g_parm, v4l_print_streamparm, INFO_FL_CLEAR(v4l2_streamparm, type)),
2932 IOCTL_INFO(VIDIOC_S_PARM, v4l_s_parm, v4l_print_streamparm, INFO_FL_PRIO),
2933 IOCTL_INFO(VIDIOC_G_STD, v4l_stub_g_std, v4l_print_std, 0),
2934 IOCTL_INFO(VIDIOC_S_STD, v4l_s_std, v4l_print_std, INFO_FL_PRIO),
2935 IOCTL_INFO(VIDIOC_ENUMSTD, v4l_enumstd, v4l_print_standard, INFO_FL_CLEAR(v4l2_standard, index)),
2936 IOCTL_INFO(VIDIOC_ENUMINPUT, v4l_enuminput, v4l_print_enuminput, INFO_FL_CLEAR(v4l2_input, index)),
2937 IOCTL_INFO(VIDIOC_G_CTRL, v4l_g_ctrl, v4l_print_control, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_control, id)),
2938 IOCTL_INFO(VIDIOC_S_CTRL, v4l_s_ctrl, v4l_print_control, INFO_FL_PRIO | INFO_FL_CTRL),
2939 IOCTL_INFO(VIDIOC_G_TUNER, v4l_g_tuner, v4l_print_tuner, INFO_FL_CLEAR(v4l2_tuner, index)),
2940 IOCTL_INFO(VIDIOC_S_TUNER, v4l_s_tuner, v4l_print_tuner, INFO_FL_PRIO),
2941 IOCTL_INFO(VIDIOC_G_AUDIO, v4l_stub_g_audio, v4l_print_audio, 0),
2942 IOCTL_INFO(VIDIOC_S_AUDIO, v4l_stub_s_audio, v4l_print_audio, INFO_FL_PRIO),
2943 IOCTL_INFO(VIDIOC_QUERYCTRL, v4l_queryctrl, v4l_print_queryctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_queryctrl, id)),
2944 IOCTL_INFO(VIDIOC_QUERYMENU, v4l_querymenu, v4l_print_querymenu, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_querymenu, index)),
2945 IOCTL_INFO(VIDIOC_G_INPUT, v4l_g_input, v4l_print_u32, 0),
2946 IOCTL_INFO(VIDIOC_S_INPUT, v4l_s_input, v4l_print_u32, INFO_FL_PRIO),
2947 IOCTL_INFO(VIDIOC_G_EDID, v4l_stub_g_edid, v4l_print_edid, INFO_FL_ALWAYS_COPY),
2948 IOCTL_INFO(VIDIOC_S_EDID, v4l_stub_s_edid, v4l_print_edid, INFO_FL_PRIO | INFO_FL_ALWAYS_COPY),
2949 IOCTL_INFO(VIDIOC_G_OUTPUT, v4l_g_output, v4l_print_u32, 0),
2950 IOCTL_INFO(VIDIOC_S_OUTPUT, v4l_s_output, v4l_print_u32, INFO_FL_PRIO),
2951 IOCTL_INFO(VIDIOC_ENUMOUTPUT, v4l_enumoutput, v4l_print_enumoutput, INFO_FL_CLEAR(v4l2_output, index)),
2952 IOCTL_INFO(VIDIOC_G_AUDOUT, v4l_stub_g_audout, v4l_print_audioout, 0),
2953 IOCTL_INFO(VIDIOC_S_AUDOUT, v4l_stub_s_audout, v4l_print_audioout, INFO_FL_PRIO),
2954 IOCTL_INFO(VIDIOC_G_MODULATOR, v4l_g_modulator, v4l_print_modulator, INFO_FL_CLEAR(v4l2_modulator, index)),
2955 IOCTL_INFO(VIDIOC_S_MODULATOR, v4l_s_modulator, v4l_print_modulator, INFO_FL_PRIO),
2956 IOCTL_INFO(VIDIOC_G_FREQUENCY, v4l_g_frequency, v4l_print_frequency, INFO_FL_CLEAR(v4l2_frequency, tuner)),
2957 IOCTL_INFO(VIDIOC_S_FREQUENCY, v4l_s_frequency, v4l_print_frequency, INFO_FL_PRIO),
2958 IOCTL_INFO(VIDIOC_CROPCAP, v4l_cropcap, v4l_print_cropcap, INFO_FL_CLEAR(v4l2_cropcap, type)),
2959 IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
2960 IOCTL_INFO(VIDIOC_S_CROP, v4l_s_crop, v4l_print_crop, INFO_FL_PRIO),
2961 IOCTL_INFO(VIDIOC_G_SELECTION, v4l_g_selection, v4l_print_selection, INFO_FL_CLEAR(v4l2_selection, r)),
2962 IOCTL_INFO(VIDIOC_S_SELECTION, v4l_s_selection, v4l_print_selection, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_selection, r)),
2963 IOCTL_INFO(VIDIOC_G_JPEGCOMP, v4l_stub_g_jpegcomp, v4l_print_jpegcompression, 0),
2964 IOCTL_INFO(VIDIOC_S_JPEGCOMP, v4l_stub_s_jpegcomp, v4l_print_jpegcompression, INFO_FL_PRIO),
2965 IOCTL_INFO(VIDIOC_QUERYSTD, v4l_querystd, v4l_print_std, 0),
2966 IOCTL_INFO(VIDIOC_TRY_FMT, v4l_try_fmt, v4l_print_format, 0),
2967 IOCTL_INFO(VIDIOC_ENUMAUDIO, v4l_stub_enumaudio, v4l_print_audio, INFO_FL_CLEAR(v4l2_audio, index)),
2968 IOCTL_INFO(VIDIOC_ENUMAUDOUT, v4l_stub_enumaudout, v4l_print_audioout, INFO_FL_CLEAR(v4l2_audioout, index)),
2969 IOCTL_INFO(VIDIOC_G_PRIORITY, v4l_g_priority, v4l_print_u32, 0),
2970 IOCTL_INFO(VIDIOC_S_PRIORITY, v4l_s_priority, v4l_print_u32, INFO_FL_PRIO),
2971 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)),
2972 IOCTL_INFO(VIDIOC_LOG_STATUS, v4l_log_status, v4l_print_newline, 0),
2973 IOCTL_INFO(VIDIOC_G_EXT_CTRLS, v4l_g_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2974 IOCTL_INFO(VIDIOC_S_EXT_CTRLS, v4l_s_ext_ctrls, v4l_print_ext_controls, INFO_FL_PRIO | INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2975 IOCTL_INFO(VIDIOC_TRY_EXT_CTRLS, v4l_try_ext_ctrls, v4l_print_ext_controls, INFO_FL_CTRL | INFO_FL_ALWAYS_COPY),
2976 IOCTL_INFO(VIDIOC_ENUM_FRAMESIZES, v4l_stub_enum_framesizes, v4l_print_frmsizeenum, INFO_FL_CLEAR(v4l2_frmsizeenum, pixel_format)),
2977 IOCTL_INFO(VIDIOC_ENUM_FRAMEINTERVALS, v4l_stub_enum_frameintervals, v4l_print_frmivalenum, INFO_FL_CLEAR(v4l2_frmivalenum, height)),
2978 IOCTL_INFO(VIDIOC_G_ENC_INDEX, v4l_stub_g_enc_index, v4l_print_enc_idx, 0),
2979 IOCTL_INFO(VIDIOC_ENCODER_CMD, v4l_stub_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_PRIO | INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2980 IOCTL_INFO(VIDIOC_TRY_ENCODER_CMD, v4l_stub_try_encoder_cmd, v4l_print_encoder_cmd, INFO_FL_CLEAR(v4l2_encoder_cmd, flags)),
2981 IOCTL_INFO(VIDIOC_DECODER_CMD, v4l_stub_decoder_cmd, v4l_print_decoder_cmd, INFO_FL_PRIO),
2982 IOCTL_INFO(VIDIOC_TRY_DECODER_CMD, v4l_stub_try_decoder_cmd, v4l_print_decoder_cmd, 0),
2983 IOCTL_INFO(VIDIOC_DBG_S_REGISTER, v4l_dbg_s_register, v4l_print_dbg_register, 0),
2984 IOCTL_INFO(VIDIOC_DBG_G_REGISTER, v4l_dbg_g_register, v4l_print_dbg_register, 0),
2985 IOCTL_INFO(VIDIOC_S_HW_FREQ_SEEK, v4l_s_hw_freq_seek, v4l_print_hw_freq_seek, INFO_FL_PRIO),
2986 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)),
2987 IOCTL_INFO(VIDIOC_G_DV_TIMINGS, v4l_stub_g_dv_timings, v4l_print_dv_timings, 0),
2988 IOCTL_INFO(VIDIOC_DQEVENT, v4l_dqevent, v4l_print_event, 0),
2989 IOCTL_INFO(VIDIOC_SUBSCRIBE_EVENT, v4l_subscribe_event, v4l_print_event_subscription, 0),
2990 IOCTL_INFO(VIDIOC_UNSUBSCRIBE_EVENT, v4l_unsubscribe_event, v4l_print_event_subscription, 0),
2991 IOCTL_INFO(VIDIOC_CREATE_BUFS, v4l_create_bufs, v4l_print_create_buffers, INFO_FL_PRIO | INFO_FL_QUEUE),
2992 IOCTL_INFO(VIDIOC_PREPARE_BUF, v4l_prepare_buf, v4l_print_buffer, INFO_FL_QUEUE),
2993 IOCTL_INFO(VIDIOC_ENUM_DV_TIMINGS, v4l_stub_enum_dv_timings, v4l_print_enum_dv_timings, INFO_FL_CLEAR(v4l2_enum_dv_timings, pad)),
2994 IOCTL_INFO(VIDIOC_QUERY_DV_TIMINGS, v4l_stub_query_dv_timings, v4l_print_dv_timings, INFO_FL_ALWAYS_COPY),
2995 IOCTL_INFO(VIDIOC_DV_TIMINGS_CAP, v4l_stub_dv_timings_cap, v4l_print_dv_timings_cap, INFO_FL_CLEAR(v4l2_dv_timings_cap, pad)),
2996 IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
2997 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)),
2998 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)),
2999 IOCTL_INFO(VIDIOC_REMOVE_BUFS, v4l_remove_bufs, v4l_print_remove_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_remove_buffers, type)),
3000 };
3001 #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
3002
v4l2_is_known_ioctl(unsigned int cmd)3003 static bool v4l2_is_known_ioctl(unsigned int cmd)
3004 {
3005 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
3006 return false;
3007 return v4l2_ioctls[_IOC_NR(cmd)].ioctl == cmd;
3008 }
3009
v4l2_ioctl_get_lock(struct video_device * vdev,struct v4l2_fh * vfh,unsigned int cmd,void * arg)3010 static struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev,
3011 struct v4l2_fh *vfh, unsigned int cmd,
3012 void *arg)
3013 {
3014 if (_IOC_NR(cmd) >= V4L2_IOCTLS)
3015 return vdev->lock;
3016 if (vfh && vfh->m2m_ctx &&
3017 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE)) {
3018 if (vfh->m2m_ctx->q_lock)
3019 return vfh->m2m_ctx->q_lock;
3020 }
3021 if (vdev->queue && vdev->queue->lock &&
3022 (v4l2_ioctls[_IOC_NR(cmd)].flags & INFO_FL_QUEUE))
3023 return vdev->queue->lock;
3024 return vdev->lock;
3025 }
3026
3027 /* Common ioctl debug function. This function can be used by
3028 external ioctl messages as well as internal V4L ioctl */
v4l_printk_ioctl(const char * prefix,unsigned int cmd)3029 void v4l_printk_ioctl(const char *prefix, unsigned int cmd)
3030 {
3031 const char *dir, *type;
3032
3033 if (prefix)
3034 printk(KERN_DEBUG "%s: ", prefix);
3035
3036 switch (_IOC_TYPE(cmd)) {
3037 case 'd':
3038 type = "v4l2_int";
3039 break;
3040 case 'V':
3041 if (!v4l2_is_known_ioctl(cmd)) {
3042 type = "v4l2";
3043 break;
3044 }
3045 pr_cont("%s", v4l2_ioctls[_IOC_NR(cmd)].name);
3046 return;
3047 default:
3048 type = "unknown";
3049 break;
3050 }
3051
3052 switch (_IOC_DIR(cmd)) {
3053 case _IOC_NONE: dir = "--"; break;
3054 case _IOC_READ: dir = "r-"; break;
3055 case _IOC_WRITE: dir = "-w"; break;
3056 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
3057 default: dir = "*ERR*"; break;
3058 }
3059 pr_cont("%s ioctl '%c', dir=%s, #%d (0x%08x)",
3060 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
3061 }
3062 EXPORT_SYMBOL(v4l_printk_ioctl);
3063
__video_do_ioctl(struct file * file,unsigned int cmd,void * arg)3064 static long __video_do_ioctl(struct file *file,
3065 unsigned int cmd, void *arg)
3066 {
3067 struct video_device *vfd = video_devdata(file);
3068 struct mutex *req_queue_lock = NULL;
3069 struct mutex *lock; /* ioctl serialization mutex */
3070 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
3071 bool write_only = false;
3072 struct v4l2_ioctl_info default_info;
3073 const struct v4l2_ioctl_info *info;
3074 struct v4l2_fh *vfh = file_to_v4l2_fh(file);
3075 int dev_debug = vfd->dev_debug;
3076 long ret = -ENOTTY;
3077
3078 if (ops == NULL) {
3079 pr_warn("%s: has no ioctl_ops.\n",
3080 video_device_node_name(vfd));
3081 return ret;
3082 }
3083
3084 /*
3085 * We need to serialize streamon/off/reqbufs with queueing new requests.
3086 * These ioctls may trigger the cancellation of a streaming
3087 * operation, and that should not be mixed with queueing a new
3088 * request at the same time.
3089 */
3090 if (v4l2_device_supports_requests(vfd->v4l2_dev) &&
3091 (cmd == VIDIOC_STREAMON || cmd == VIDIOC_STREAMOFF ||
3092 cmd == VIDIOC_REQBUFS)) {
3093 req_queue_lock = &vfd->v4l2_dev->mdev->req_queue_mutex;
3094
3095 if (mutex_lock_interruptible(req_queue_lock))
3096 return -ERESTARTSYS;
3097 }
3098
3099 lock = v4l2_ioctl_get_lock(vfd, vfh, cmd, arg);
3100
3101 if (lock && mutex_lock_interruptible(lock)) {
3102 if (req_queue_lock)
3103 mutex_unlock(req_queue_lock);
3104 return -ERESTARTSYS;
3105 }
3106
3107 if (!video_is_registered(vfd)) {
3108 ret = -ENODEV;
3109 goto unlock;
3110 }
3111
3112 if (v4l2_is_known_ioctl(cmd)) {
3113 info = &v4l2_ioctls[_IOC_NR(cmd)];
3114
3115 if (!is_valid_ioctl(vfd, cmd) &&
3116 !((info->flags & INFO_FL_CTRL) && vfh->ctrl_handler))
3117 goto done;
3118
3119 if (info->flags & INFO_FL_PRIO) {
3120 ret = v4l2_prio_check(vfd->prio, vfh->prio);
3121 if (ret)
3122 goto done;
3123 }
3124 } else {
3125 default_info.ioctl = cmd;
3126 default_info.flags = 0;
3127 default_info.debug = v4l_print_default;
3128 info = &default_info;
3129 }
3130
3131 write_only = _IOC_DIR(cmd) == _IOC_WRITE;
3132 if (info != &default_info) {
3133 ret = info->func(ops, file, arg);
3134 } else if (!ops->vidioc_default) {
3135 ret = -ENOTTY;
3136 } else {
3137 ret = ops->vidioc_default(file, NULL,
3138 v4l2_prio_check(vfd->prio, vfh->prio) >= 0,
3139 cmd, arg);
3140 }
3141
3142 done:
3143 if (dev_debug & (V4L2_DEV_DEBUG_IOCTL | V4L2_DEV_DEBUG_IOCTL_ARG)) {
3144 if (!(dev_debug & V4L2_DEV_DEBUG_STREAMING) &&
3145 (cmd == VIDIOC_QBUF || cmd == VIDIOC_DQBUF))
3146 goto unlock;
3147
3148 v4l_printk_ioctl(video_device_node_name(vfd), cmd);
3149 if (ret < 0)
3150 pr_cont(": error %ld", ret);
3151 if (!(dev_debug & V4L2_DEV_DEBUG_IOCTL_ARG))
3152 pr_cont("\n");
3153 else if (_IOC_DIR(cmd) == _IOC_NONE)
3154 info->debug(arg, write_only);
3155 else {
3156 pr_cont(": ");
3157 info->debug(arg, write_only);
3158 }
3159 }
3160
3161 unlock:
3162 if (lock)
3163 mutex_unlock(lock);
3164 if (req_queue_lock)
3165 mutex_unlock(req_queue_lock);
3166 return ret;
3167 }
3168
check_array_args(unsigned int cmd,void * parg,size_t * array_size,void __user ** user_ptr,void *** kernel_ptr)3169 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
3170 void __user **user_ptr, void ***kernel_ptr)
3171 {
3172 int ret = 0;
3173
3174 switch (cmd) {
3175 case VIDIOC_PREPARE_BUF:
3176 case VIDIOC_QUERYBUF:
3177 case VIDIOC_QBUF:
3178 case VIDIOC_DQBUF: {
3179 struct v4l2_buffer *buf = parg;
3180
3181 if (V4L2_TYPE_IS_MULTIPLANAR(buf->type) && buf->length > 0) {
3182 if (buf->length > VIDEO_MAX_PLANES) {
3183 ret = -EINVAL;
3184 break;
3185 }
3186 *user_ptr = (void __user *)buf->m.planes;
3187 *kernel_ptr = (void **)&buf->m.planes;
3188 *array_size = sizeof(struct v4l2_plane) * buf->length;
3189 ret = 1;
3190 }
3191 break;
3192 }
3193
3194 case VIDIOC_G_EDID:
3195 case VIDIOC_S_EDID: {
3196 struct v4l2_edid *edid = parg;
3197
3198 if (edid->blocks) {
3199 if (edid->blocks > 256) {
3200 ret = -EINVAL;
3201 break;
3202 }
3203 *user_ptr = (void __user *)edid->edid;
3204 *kernel_ptr = (void **)&edid->edid;
3205 *array_size = edid->blocks * 128;
3206 ret = 1;
3207 }
3208 break;
3209 }
3210
3211 case VIDIOC_S_EXT_CTRLS:
3212 case VIDIOC_G_EXT_CTRLS:
3213 case VIDIOC_TRY_EXT_CTRLS: {
3214 struct v4l2_ext_controls *ctrls = parg;
3215
3216 if (ctrls->count != 0) {
3217 if (ctrls->count > V4L2_CID_MAX_CTRLS) {
3218 ret = -EINVAL;
3219 break;
3220 }
3221 *user_ptr = (void __user *)ctrls->controls;
3222 *kernel_ptr = (void **)&ctrls->controls;
3223 *array_size = sizeof(struct v4l2_ext_control)
3224 * ctrls->count;
3225 ret = 1;
3226 }
3227 break;
3228 }
3229
3230 case VIDIOC_SUBDEV_G_ROUTING:
3231 case VIDIOC_SUBDEV_S_ROUTING: {
3232 struct v4l2_subdev_routing *routing = parg;
3233
3234 if (routing->len_routes > 256)
3235 return -E2BIG;
3236
3237 *user_ptr = u64_to_user_ptr(routing->routes);
3238 *kernel_ptr = (void **)&routing->routes;
3239 *array_size = sizeof(struct v4l2_subdev_route)
3240 * routing->len_routes;
3241 ret = 1;
3242 break;
3243 }
3244 }
3245
3246 return ret;
3247 }
3248
v4l2_translate_cmd(unsigned int cmd)3249 unsigned int v4l2_translate_cmd(unsigned int cmd)
3250 {
3251 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3252 switch (cmd) {
3253 case VIDIOC_DQEVENT_TIME32:
3254 return VIDIOC_DQEVENT;
3255 case VIDIOC_QUERYBUF_TIME32:
3256 return VIDIOC_QUERYBUF;
3257 case VIDIOC_QBUF_TIME32:
3258 return VIDIOC_QBUF;
3259 case VIDIOC_DQBUF_TIME32:
3260 return VIDIOC_DQBUF;
3261 case VIDIOC_PREPARE_BUF_TIME32:
3262 return VIDIOC_PREPARE_BUF;
3263 }
3264 #endif
3265 if (in_compat_syscall())
3266 return v4l2_compat_translate_cmd(cmd);
3267
3268 return cmd;
3269 }
3270 EXPORT_SYMBOL_GPL(v4l2_translate_cmd);
3271
video_get_user(void __user * arg,void * parg,unsigned int real_cmd,unsigned int cmd,bool * always_copy)3272 static int video_get_user(void __user *arg, void *parg,
3273 unsigned int real_cmd, unsigned int cmd,
3274 bool *always_copy)
3275 {
3276 unsigned int n = _IOC_SIZE(real_cmd);
3277 int err = 0;
3278
3279 if (!(_IOC_DIR(cmd) & _IOC_WRITE)) {
3280 /* read-only ioctl */
3281 memset(parg, 0, n);
3282 return 0;
3283 }
3284
3285 /*
3286 * In some cases, only a few fields are used as input,
3287 * i.e. when the app sets "index" and then the driver
3288 * fills in the rest of the structure for the thing
3289 * with that index. We only need to copy up the first
3290 * non-input field.
3291 */
3292 if (v4l2_is_known_ioctl(real_cmd)) {
3293 u32 flags = v4l2_ioctls[_IOC_NR(real_cmd)].flags;
3294
3295 if (flags & INFO_FL_CLEAR_MASK)
3296 n = (flags & INFO_FL_CLEAR_MASK) >> 16;
3297 *always_copy = flags & INFO_FL_ALWAYS_COPY;
3298 }
3299
3300 if (cmd == real_cmd) {
3301 if (copy_from_user(parg, (void __user *)arg, n))
3302 err = -EFAULT;
3303 } else if (in_compat_syscall()) {
3304 memset(parg, 0, n);
3305 err = v4l2_compat_get_user(arg, parg, cmd);
3306 } else {
3307 memset(parg, 0, n);
3308 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3309 switch (cmd) {
3310 case VIDIOC_QUERYBUF_TIME32:
3311 case VIDIOC_QBUF_TIME32:
3312 case VIDIOC_DQBUF_TIME32:
3313 case VIDIOC_PREPARE_BUF_TIME32: {
3314 struct v4l2_buffer_time32 vb32;
3315 struct v4l2_buffer *vb = parg;
3316
3317 if (copy_from_user(&vb32, arg, sizeof(vb32)))
3318 return -EFAULT;
3319
3320 *vb = (struct v4l2_buffer) {
3321 .index = vb32.index,
3322 .type = vb32.type,
3323 .bytesused = vb32.bytesused,
3324 .flags = vb32.flags,
3325 .field = vb32.field,
3326 .timestamp.tv_sec = vb32.timestamp.tv_sec,
3327 .timestamp.tv_usec = vb32.timestamp.tv_usec,
3328 .timecode = vb32.timecode,
3329 .sequence = vb32.sequence,
3330 .memory = vb32.memory,
3331 .m.userptr = vb32.m.userptr,
3332 .length = vb32.length,
3333 .request_fd = vb32.request_fd,
3334 };
3335 break;
3336 }
3337 }
3338 #endif
3339 }
3340
3341 /* zero out anything we don't copy from userspace */
3342 if (!err && n < _IOC_SIZE(real_cmd))
3343 memset((u8 *)parg + n, 0, _IOC_SIZE(real_cmd) - n);
3344 return err;
3345 }
3346
video_put_user(void __user * arg,void * parg,unsigned int real_cmd,unsigned int cmd)3347 static int video_put_user(void __user *arg, void *parg,
3348 unsigned int real_cmd, unsigned int cmd)
3349 {
3350 if (!(_IOC_DIR(cmd) & _IOC_READ))
3351 return 0;
3352
3353 if (cmd == real_cmd) {
3354 /* Copy results into user buffer */
3355 if (copy_to_user(arg, parg, _IOC_SIZE(cmd)))
3356 return -EFAULT;
3357 return 0;
3358 }
3359
3360 if (in_compat_syscall())
3361 return v4l2_compat_put_user(arg, parg, cmd);
3362
3363 #if !defined(CONFIG_64BIT) && defined(CONFIG_COMPAT_32BIT_TIME)
3364 switch (cmd) {
3365 case VIDIOC_DQEVENT_TIME32: {
3366 struct v4l2_event *ev = parg;
3367 struct v4l2_event_time32 ev32;
3368
3369 memset(&ev32, 0, sizeof(ev32));
3370
3371 ev32.type = ev->type;
3372 ev32.pending = ev->pending;
3373 ev32.sequence = ev->sequence;
3374 ev32.timestamp.tv_sec = ev->timestamp.tv_sec;
3375 ev32.timestamp.tv_nsec = ev->timestamp.tv_nsec;
3376 ev32.id = ev->id;
3377
3378 memcpy(&ev32.u, &ev->u, sizeof(ev->u));
3379 memcpy(&ev32.reserved, &ev->reserved, sizeof(ev->reserved));
3380
3381 if (copy_to_user(arg, &ev32, sizeof(ev32)))
3382 return -EFAULT;
3383 break;
3384 }
3385 case VIDIOC_QUERYBUF_TIME32:
3386 case VIDIOC_QBUF_TIME32:
3387 case VIDIOC_DQBUF_TIME32:
3388 case VIDIOC_PREPARE_BUF_TIME32: {
3389 struct v4l2_buffer *vb = parg;
3390 struct v4l2_buffer_time32 vb32;
3391
3392 memset(&vb32, 0, sizeof(vb32));
3393
3394 vb32.index = vb->index;
3395 vb32.type = vb->type;
3396 vb32.bytesused = vb->bytesused;
3397 vb32.flags = vb->flags;
3398 vb32.field = vb->field;
3399 vb32.timestamp.tv_sec = vb->timestamp.tv_sec;
3400 vb32.timestamp.tv_usec = vb->timestamp.tv_usec;
3401 vb32.timecode = vb->timecode;
3402 vb32.sequence = vb->sequence;
3403 vb32.memory = vb->memory;
3404 vb32.m.userptr = vb->m.userptr;
3405 vb32.length = vb->length;
3406 vb32.request_fd = vb->request_fd;
3407
3408 if (copy_to_user(arg, &vb32, sizeof(vb32)))
3409 return -EFAULT;
3410 break;
3411 }
3412 }
3413 #endif
3414
3415 return 0;
3416 }
3417
3418 long
video_usercopy(struct file * file,unsigned int orig_cmd,unsigned long arg,v4l2_kioctl func)3419 video_usercopy(struct file *file, unsigned int orig_cmd, unsigned long arg,
3420 v4l2_kioctl func)
3421 {
3422 char sbuf[128];
3423 void *mbuf = NULL, *array_buf = NULL;
3424 void *parg = (void *)arg;
3425 long err = -EINVAL;
3426 bool has_array_args;
3427 bool always_copy = false;
3428 size_t array_size = 0;
3429 void __user *user_ptr = NULL;
3430 void **kernel_ptr = NULL;
3431 unsigned int cmd = v4l2_translate_cmd(orig_cmd);
3432 const size_t ioc_size = _IOC_SIZE(cmd);
3433
3434 /* Copy arguments into temp kernel buffer */
3435 if (_IOC_DIR(cmd) != _IOC_NONE) {
3436 if (ioc_size <= sizeof(sbuf)) {
3437 parg = sbuf;
3438 } else {
3439 /* too big to allocate from stack */
3440 mbuf = kmalloc(ioc_size, GFP_KERNEL);
3441 if (NULL == mbuf)
3442 return -ENOMEM;
3443 parg = mbuf;
3444 }
3445
3446 err = video_get_user((void __user *)arg, parg, cmd,
3447 orig_cmd, &always_copy);
3448 if (err)
3449 goto out;
3450 }
3451
3452 err = check_array_args(cmd, parg, &array_size, &user_ptr, &kernel_ptr);
3453 if (err < 0)
3454 goto out;
3455 has_array_args = err;
3456
3457 if (has_array_args) {
3458 array_buf = kvmalloc(array_size, GFP_KERNEL);
3459 err = -ENOMEM;
3460 if (array_buf == NULL)
3461 goto out;
3462 if (in_compat_syscall())
3463 err = v4l2_compat_get_array_args(file, array_buf,
3464 user_ptr, array_size,
3465 orig_cmd, parg);
3466 else
3467 err = copy_from_user(array_buf, user_ptr, array_size) ?
3468 -EFAULT : 0;
3469 if (err)
3470 goto out;
3471 *kernel_ptr = array_buf;
3472 }
3473
3474 /* Handles IOCTL */
3475 err = func(file, cmd, parg);
3476 if (err == -ENOTTY || err == -ENOIOCTLCMD) {
3477 err = -ENOTTY;
3478 goto out;
3479 }
3480
3481 if (err == 0) {
3482 if (cmd == VIDIOC_DQBUF)
3483 trace_v4l2_dqbuf(video_devdata(file)->minor, parg);
3484 else if (cmd == VIDIOC_QBUF)
3485 trace_v4l2_qbuf(video_devdata(file)->minor, parg);
3486 }
3487
3488 /*
3489 * Some ioctls can return an error, but still have valid
3490 * results that must be returned.
3491 *
3492 * FIXME: subdev IOCTLS are partially handled here and partially in
3493 * v4l2-subdev.c and the 'always_copy' flag can only be set for IOCTLS
3494 * defined here as part of the 'v4l2_ioctls' array. As
3495 * VIDIOC_SUBDEV_[GS]_ROUTING needs to return results to applications
3496 * even in case of failure, but it is not defined here as part of the
3497 * 'v4l2_ioctls' array, insert an ad-hoc check to address that.
3498 */
3499 if (cmd == VIDIOC_SUBDEV_G_ROUTING || cmd == VIDIOC_SUBDEV_S_ROUTING)
3500 always_copy = true;
3501
3502 if (err < 0 && !always_copy)
3503 goto out;
3504
3505 if (has_array_args) {
3506 *kernel_ptr = (void __force *)user_ptr;
3507 if (in_compat_syscall()) {
3508 int put_err;
3509
3510 put_err = v4l2_compat_put_array_args(file, user_ptr,
3511 array_buf,
3512 array_size,
3513 orig_cmd, parg);
3514 if (put_err)
3515 err = put_err;
3516 } else if (copy_to_user(user_ptr, array_buf, array_size)) {
3517 err = -EFAULT;
3518 }
3519 }
3520
3521 if (video_put_user((void __user *)arg, parg, cmd, orig_cmd))
3522 err = -EFAULT;
3523 out:
3524 kvfree(array_buf);
3525 kfree(mbuf);
3526 return err;
3527 }
3528
video_ioctl2(struct file * file,unsigned int cmd,unsigned long arg)3529 long video_ioctl2(struct file *file,
3530 unsigned int cmd, unsigned long arg)
3531 {
3532 return video_usercopy(file, cmd, arg, __video_do_ioctl);
3533 }
3534 EXPORT_SYMBOL(video_ioctl2);
3535