]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - drivers/media/video/v4l2-ioctl.c
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
V4L/DVB (10811): videodev: only copy needed part of RW ioctl's parameter
[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / v4l2-ioctl.c
CommitLineData
35ea11ff
HV		 1/*
2 * Video capture interface for Linux version 2
3 *
4 * A generic framework to process V4L2 ioctl commands.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
d9b01449 11 * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1)
35ea11ff
HV		 12 * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
13 */
14
15#include <linux/module.h>
16#include <linux/types.h>
17#include <linux/kernel.h>
18
19#define __OLD_VIDIOC_ /* To allow fixing old calls */
20#include <linux/videodev2.h>
21
22#ifdef CONFIG_VIDEO_V4L1
23#include <linux/videodev.h>
24#endif
25#include <media/v4l2-common.h>
26#include <media/v4l2-ioctl.h>
80b36e0f 27#include <media/v4l2-chip-ident.h>
35ea11ff
HV		 28#include <linux/video_decoder.h>
29
30#define dbgarg(cmd, fmt, arg...) \
31 do { \
32 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \
33 printk(KERN_DEBUG "%s: ", vfd->name); \
34 v4l_printk_ioctl(cmd); \
35 printk(" " fmt, ## arg); \
36 } \
37 } while (0)
38
39#define dbgarg2(fmt, arg...) \
40 do { \
41 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
42 printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\
43 } while (0)
44
45struct std_descr {
46 v4l2_std_id std;
47 const char *descr;
48};
49
50static const struct std_descr standards[] = {
51 { V4L2_STD_NTSC, "NTSC" },
52 { V4L2_STD_NTSC_M, "NTSC-M" },
53 { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" },
54 { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" },
55 { V4L2_STD_NTSC_443, "NTSC-443" },
56 { V4L2_STD_PAL, "PAL" },
57 { V4L2_STD_PAL_BG, "PAL-BG" },
58 { V4L2_STD_PAL_B, "PAL-B" },
59 { V4L2_STD_PAL_B1, "PAL-B1" },
60 { V4L2_STD_PAL_G, "PAL-G" },
61 { V4L2_STD_PAL_H, "PAL-H" },
62 { V4L2_STD_PAL_I, "PAL-I" },
63 { V4L2_STD_PAL_DK, "PAL-DK" },
64 { V4L2_STD_PAL_D, "PAL-D" },
65 { V4L2_STD_PAL_D1, "PAL-D1" },
66 { V4L2_STD_PAL_K, "PAL-K" },
67 { V4L2_STD_PAL_M, "PAL-M" },
68 { V4L2_STD_PAL_N, "PAL-N" },
69 { V4L2_STD_PAL_Nc, "PAL-Nc" },
70 { V4L2_STD_PAL_60, "PAL-60" },
71 { V4L2_STD_SECAM, "SECAM" },
72 { V4L2_STD_SECAM_B, "SECAM-B" },
73 { V4L2_STD_SECAM_G, "SECAM-G" },
74 { V4L2_STD_SECAM_H, "SECAM-H" },
75 { V4L2_STD_SECAM_DK, "SECAM-DK" },
76 { V4L2_STD_SECAM_D, "SECAM-D" },
77 { V4L2_STD_SECAM_K, "SECAM-K" },
78 { V4L2_STD_SECAM_K1, "SECAM-K1" },
79 { V4L2_STD_SECAM_L, "SECAM-L" },
80 { V4L2_STD_SECAM_LC, "SECAM-Lc" },
81 { 0, "Unknown" }
82};
83
84/* video4linux standard ID conversion to standard name
85 */
86const char *v4l2_norm_to_name(v4l2_std_id id)
87{
88 u32 myid = id;
89 int i;
90
91 /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle
92 64 bit comparations. So, on that architecture, with some gcc
93 variants, compilation fails. Currently, the max value is 30bit wide.
94 */
95 BUG_ON(myid != id);
96
97 for (i = 0; standards[i].std; i++)
98 if (myid == standards[i].std)
99 break;
100 return standards[i].descr;
101}
102EXPORT_SYMBOL(v4l2_norm_to_name);
103
104/* Fill in the fields of a v4l2_standard structure according to the
105 'id' and 'transmission' parameters. Returns negative on error. */
106int v4l2_video_std_construct(struct v4l2_standard *vs,
107 int id, const char *name)
108{
109 u32 index = vs->index;
110
111 memset(vs, 0, sizeof(struct v4l2_standard));
112 vs->index = index;
113 vs->id = id;
114 if (id & V4L2_STD_525_60) {
115 vs->frameperiod.numerator = 1001;
116 vs->frameperiod.denominator = 30000;
117 vs->framelines = 525;
118 } else {
119 vs->frameperiod.numerator = 1;
120 vs->frameperiod.denominator = 25;
121 vs->framelines = 625;
122 }
123 strlcpy(vs->name, name, sizeof(vs->name));
124 return 0;
125}
126EXPORT_SYMBOL(v4l2_video_std_construct);
127
128/* ----------------------------------------------------------------- */
129/* some arrays for pretty-printing debug messages of enum types */
130
131const char *v4l2_field_names[] = {
132 [V4L2_FIELD_ANY] = "any",
133 [V4L2_FIELD_NONE] = "none",
134 [V4L2_FIELD_TOP] = "top",
135 [V4L2_FIELD_BOTTOM] = "bottom",
136 [V4L2_FIELD_INTERLACED] = "interlaced",
137 [V4L2_FIELD_SEQ_TB] = "seq-tb",
138 [V4L2_FIELD_SEQ_BT] = "seq-bt",
139 [V4L2_FIELD_ALTERNATE] = "alternate",
140 [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb",
141 [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt",
142};
143EXPORT_SYMBOL(v4l2_field_names);
144
145const char *v4l2_type_names[] = {
146 [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap",
147 [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay",
148 [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out",
149 [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
150 [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
151 [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap",
152 [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
153 [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay",
154};
155EXPORT_SYMBOL(v4l2_type_names);
156
157static const char *v4l2_memory_names[] = {
158 [V4L2_MEMORY_MMAP] = "mmap",
159 [V4L2_MEMORY_USERPTR] = "userptr",
160 [V4L2_MEMORY_OVERLAY] = "overlay",
161};
162
163#define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \
164 arr[a] : "unknown")
165
166/* ------------------------------------------------------------------ */
167/* debug help functions */
168
169#ifdef CONFIG_VIDEO_V4L1_COMPAT
170static const char *v4l1_ioctls[] = {
171 [_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP",
172 [_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN",
173 [_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN",
174 [_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER",
175 [_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER",
176 [_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT",
177 [_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT",
178 [_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE",
179 [_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN",
180 [_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN",
181 [_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF",
182 [_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF",
183 [_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY",
184 [_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ",
185 [_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ",
186 [_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO",
187 [_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO",
188 [_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC",
189 [_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE",
190 [_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF",
191 [_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT",
192 [_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE",
193 [_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE",
194 [_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE",
195 [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE",
196 [_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO",
197 [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE",
198 [_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT",
199 [_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT"
200};
201#define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls)
202#endif
203
204static const char *v4l2_ioctls[] = {
205 [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP",
206 [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED",
207 [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT",
208 [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT",
209 [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT",
210 [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS",
211 [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF",
212 [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF",
213 [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF",
214 [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY",
215 [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF",
216 [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF",
217 [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON",
218 [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF",
219 [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM",
220 [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM",
221 [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD",
222 [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD",
223 [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD",
224 [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT",
225 [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL",
226 [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL",
227 [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER",
228 [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER",
229 [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO",
230 [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO",
231 [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL",
232 [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU",
233 [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT",
234 [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT",
235 [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT",
236 [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT",
237 [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT",
238 [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT",
239 [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT",
240 [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR",
241 [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR",
242 [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY",
243 [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY",
244 [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP",
245 [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP",
246 [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP",
247 [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP",
248 [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP",
249 [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD",
250 [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT",
251 [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO",
252 [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT",
253 [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY",
254 [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY",
255 [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP",
256 [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS",
257 [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS",
258 [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS",
259 [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS",
260#if 1
261 [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES",
262 [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS",
263 [_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX",
264 [_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD",
265 [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD",
266
267 [_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER",
268 [_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER",
269
aecde8b5 270 [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT",
35ea11ff
HV		 271 [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK",
272#endif
273};
274#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
275
276static const char *v4l2_int_ioctls[] = {
277#ifdef CONFIG_VIDEO_V4L1_COMPAT
278 [_IOC_NR(DECODER_GET_CAPABILITIES)] = "DECODER_GET_CAPABILITIES",
279 [_IOC_NR(DECODER_GET_STATUS)] = "DECODER_GET_STATUS",
280 [_IOC_NR(DECODER_SET_NORM)] = "DECODER_SET_NORM",
281 [_IOC_NR(DECODER_SET_INPUT)] = "DECODER_SET_INPUT",
282 [_IOC_NR(DECODER_SET_OUTPUT)] = "DECODER_SET_OUTPUT",
283 [_IOC_NR(DECODER_ENABLE_OUTPUT)] = "DECODER_ENABLE_OUTPUT",
284 [_IOC_NR(DECODER_SET_PICTURE)] = "DECODER_SET_PICTURE",
285 [_IOC_NR(DECODER_SET_GPIO)] = "DECODER_SET_GPIO",
286 [_IOC_NR(DECODER_INIT)] = "DECODER_INIT",
287 [_IOC_NR(DECODER_SET_VBI_BYPASS)] = "DECODER_SET_VBI_BYPASS",
288 [_IOC_NR(DECODER_DUMP)] = "DECODER_DUMP",
289#endif
290 [_IOC_NR(AUDC_SET_RADIO)] = "AUDC_SET_RADIO",
291
292 [_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR",
293 [_IOC_NR(TUNER_SET_STANDBY)] = "TUNER_SET_STANDBY",
294 [_IOC_NR(TUNER_SET_CONFIG)] = "TUNER_SET_CONFIG",
295
296 [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)] = "VIDIOC_INT_S_TUNER_MODE",
297 [_IOC_NR(VIDIOC_INT_RESET)] = "VIDIOC_INT_RESET",
298 [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ",
299 [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)] = "VIDIOC_INT_DECODE_VBI_LINE",
300 [_IOC_NR(VIDIOC_INT_S_VBI_DATA)] = "VIDIOC_INT_S_VBI_DATA",
301 [_IOC_NR(VIDIOC_INT_G_VBI_DATA)] = "VIDIOC_INT_G_VBI_DATA",
302 [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ",
303 [_IOC_NR(VIDIOC_INT_S_STANDBY)] = "VIDIOC_INT_S_STANDBY",
304 [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING",
305 [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)] = "VIDIOC_INT_G_AUDIO_ROUTING",
306 [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)] = "VIDIOC_INT_S_VIDEO_ROUTING",
307 [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING",
308 [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)] = "VIDIOC_INT_S_CRYSTAL_FREQ",
309 [_IOC_NR(VIDIOC_INT_INIT)] = "VIDIOC_INT_INIT",
310 [_IOC_NR(VIDIOC_INT_G_STD_OUTPUT)] = "VIDIOC_INT_G_STD_OUTPUT",
311 [_IOC_NR(VIDIOC_INT_S_STD_OUTPUT)] = "VIDIOC_INT_S_STD_OUTPUT",
312};
313#define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls)
314
315/* Common ioctl debug function. This function can be used by
316 external ioctl messages as well as internal V4L ioctl */
317void v4l_printk_ioctl(unsigned int cmd)
318{
319 char *dir, *type;
320
321 switch (_IOC_TYPE(cmd)) {
322 case 'd':
323 if (_IOC_NR(cmd) >= V4L2_INT_IOCTLS) {
324 type = "v4l2_int";
325 break;
326 }
327 printk("%s", v4l2_int_ioctls[_IOC_NR(cmd)]);
328 return;
329#ifdef CONFIG_VIDEO_V4L1_COMPAT
330 case 'v':
331 if (_IOC_NR(cmd) >= V4L1_IOCTLS) {
332 type = "v4l1";
333 break;
334 }
335 printk("%s", v4l1_ioctls[_IOC_NR(cmd)]);
336 return;
337#endif
338 case 'V':
339 if (_IOC_NR(cmd) >= V4L2_IOCTLS) {
340 type = "v4l2";
341 break;
342 }
343 printk("%s", v4l2_ioctls[_IOC_NR(cmd)]);
344 return;
345 default:
346 type = "unknown";
347 }
348
349 switch (_IOC_DIR(cmd)) {
350 case _IOC_NONE: dir = "--"; break;
351 case _IOC_READ: dir = "r-"; break;
352 case _IOC_WRITE: dir = "-w"; break;
353 case _IOC_READ | _IOC_WRITE: dir = "rw"; break;
354 default: dir = "*ERR*"; break;
355 }
356 printk("%s ioctl '%c', dir=%s, #%d (0x%08x)",
357 type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd);
358}
359EXPORT_SYMBOL(v4l_printk_ioctl);
360
361/*
362 * helper function -- handles userspace copying for ioctl arguments
363 */
364
365#ifdef __OLD_VIDIOC_
366static unsigned int
367video_fix_command(unsigned int cmd)
368{
369 switch (cmd) {
370 case VIDIOC_OVERLAY_OLD:
371 cmd = VIDIOC_OVERLAY;
372 break;
373 case VIDIOC_S_PARM_OLD:
374 cmd = VIDIOC_S_PARM;
375 break;
376 case VIDIOC_S_CTRL_OLD:
377 cmd = VIDIOC_S_CTRL;
378 break;
379 case VIDIOC_G_AUDIO_OLD:
380 cmd = VIDIOC_G_AUDIO;
381 break;
382 case VIDIOC_G_AUDOUT_OLD:
383 cmd = VIDIOC_G_AUDOUT;
384 break;
385 case VIDIOC_CROPCAP_OLD:
386 cmd = VIDIOC_CROPCAP;
387 break;
388 }
389 return cmd;
390}
391#endif
392
393/*
394 * Obsolete usercopy function - Should be removed soon
395 */
069b7479 396long
f473bf76
HV		 397video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
398 v4l2_kioctl func)
35ea11ff
HV		 399{
400 char sbuf[128];
401 void *mbuf = NULL;
402 void *parg = NULL;
069b7479 403 long err = -EINVAL;
35ea11ff
HV		 404 int is_ext_ctrl;
405 size_t ctrls_size = 0;
406 void __user *user_ptr = NULL;
407
408#ifdef __OLD_VIDIOC_
409 cmd = video_fix_command(cmd);
410#endif
411 is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
412 cmd == VIDIOC_TRY_EXT_CTRLS);
413
414 /* Copy arguments into temp kernel buffer */
415 switch (_IOC_DIR(cmd)) {
416 case _IOC_NONE:
417 parg = NULL;
418 break;
419 case _IOC_READ:
420 case _IOC_WRITE:
421 case (_IOC_WRITE | _IOC_READ):
422 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
423 parg = sbuf;
424 } else {
425 /* too big to allocate from stack */
426 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
427 if (NULL == mbuf)
428 return -ENOMEM;
429 parg = mbuf;
430 }
431
432 err = -EFAULT;
433 if (_IOC_DIR(cmd) & _IOC_WRITE)
434 if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
435 goto out;
436 break;
437 }
438 if (is_ext_ctrl) {
439 struct v4l2_ext_controls *p = parg;
440
441 /* In case of an error, tell the caller that it wasn't
442 a specific control that caused it. */
443 p->error_idx = p->count;
444 user_ptr = (void __user *)p->controls;
445 if (p->count) {
446 ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
447 /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
448 mbuf = kmalloc(ctrls_size, GFP_KERNEL);
449 err = -ENOMEM;
450 if (NULL == mbuf)
451 goto out_ext_ctrl;
452 err = -EFAULT;
453 if (copy_from_user(mbuf, user_ptr, ctrls_size))
454 goto out_ext_ctrl;
455 p->controls = mbuf;
456 }
457 }
458
459 /* call driver */
f473bf76 460 err = func(file, cmd, parg);
35ea11ff
HV		 461 if (err == -ENOIOCTLCMD)
462 err = -EINVAL;
463 if (is_ext_ctrl) {
464 struct v4l2_ext_controls *p = parg;
465
466 p->controls = (void *)user_ptr;
467 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
468 err = -EFAULT;
469 goto out_ext_ctrl;
470 }
471 if (err < 0)
472 goto out;
473
474out_ext_ctrl:
475 /* Copy results into user buffer */
476 switch (_IOC_DIR(cmd)) {
477 case _IOC_READ:
478 case (_IOC_WRITE | _IOC_READ):
479 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
480 err = -EFAULT;
481 break;
482 }
483
484out:
485 kfree(mbuf);
486 return err;
487}
488EXPORT_SYMBOL(video_usercopy);
489
490static void dbgbuf(unsigned int cmd, struct video_device *vfd,
491 struct v4l2_buffer *p)
492{
493 struct v4l2_timecode *tc = &p->timecode;
494
495 dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
496 "bytesused=%d, flags=0x%08d, "
497 "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n",
498 p->timestamp.tv_sec / 3600,
499 (int)(p->timestamp.tv_sec / 60) % 60,
500 (int)(p->timestamp.tv_sec % 60),
b045979d 501 (long)p->timestamp.tv_usec,
35ea11ff
HV		 502 p->index,
503 prt_names(p->type, v4l2_type_names),
504 p->bytesused, p->flags,
505 p->field, p->sequence,
506 prt_names(p->memory, v4l2_memory_names),
507 p->m.userptr, p->length);
508 dbgarg2("timecode=%02d:%02d:%02d type=%d, "
509 "flags=0x%08d, frames=%d, userbits=0x%08x\n",
510 tc->hours, tc->minutes, tc->seconds,
511 tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits);
512}
513
514static inline void dbgrect(struct video_device *vfd, char *s,
515 struct v4l2_rect *r)
516{
517 dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top,
518 r->width, r->height);
519};
520
521static inline void v4l_print_pix_fmt(struct video_device *vfd,
522 struct v4l2_pix_format *fmt)
523{
524 dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, "
525 "bytesperline=%d sizeimage=%d, colorspace=%d\n",
526 fmt->width, fmt->height,
527 (fmt->pixelformat & 0xff),
528 (fmt->pixelformat >> 8) & 0xff,
529 (fmt->pixelformat >> 16) & 0xff,
530 (fmt->pixelformat >> 24) & 0xff,
531 prt_names(fmt->field, v4l2_field_names),
532 fmt->bytesperline, fmt->sizeimage, fmt->colorspace);
533};
534
535static inline void v4l_print_ext_ctrls(unsigned int cmd,
536 struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals)
537{
538 __u32 i;
539
540 if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG))
541 return;
542 dbgarg(cmd, "");
543 printk(KERN_CONT "class=0x%x", c->ctrl_class);
544 for (i = 0; i < c->count; i++) {
545 if (show_vals)
546 printk(KERN_CONT " id/val=0x%x/0x%x",
547 c->controls[i].id, c->controls[i].value);
548 else
549 printk(KERN_CONT " id=0x%x", c->controls[i].id);
550 }
551 printk(KERN_CONT "\n");
552};
553
554static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv)
555{
556 __u32 i;
557
558 /* zero the reserved fields */
559 c->reserved[0] = c->reserved[1] = 0;
560 for (i = 0; i < c->count; i++) {
561 c->controls[i].reserved2[0] = 0;
562 c->controls[i].reserved2[1] = 0;
563 }
564 /* V4L2_CID_PRIVATE_BASE cannot be used as control class
565 when using extended controls.
566 Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL
567 is it allowed for backwards compatibility.
568 */
569 if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE)
570 return 0;
571 /* Check that all controls are from the same control class. */
572 for (i = 0; i < c->count; i++) {
573 if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) {
574 c->error_idx = i;
575 return 0;
576 }
577 }
578 return 1;
579}
580
a399810c 581static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type)
35ea11ff 582{
a399810c
HV		 583 if (ops == NULL)
584 return -EINVAL;
585
35ea11ff
HV		 586 switch (type) {
587 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
a399810c 588 if (ops->vidioc_try_fmt_vid_cap)
35ea11ff
HV		 589 return 0;
590 break;
591 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
a399810c 592 if (ops->vidioc_try_fmt_vid_overlay)
35ea11ff
HV		 593 return 0;
594 break;
595 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
a399810c 596 if (ops->vidioc_try_fmt_vid_out)
35ea11ff
HV		 597 return 0;
598 break;
599 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
a399810c 600 if (ops->vidioc_try_fmt_vid_out_overlay)
35ea11ff
HV		 601 return 0;
602 break;
603 case V4L2_BUF_TYPE_VBI_CAPTURE:
a399810c 604 if (ops->vidioc_try_fmt_vbi_cap)
35ea11ff
HV		 605 return 0;
606 break;
607 case V4L2_BUF_TYPE_VBI_OUTPUT:
a399810c 608 if (ops->vidioc_try_fmt_vbi_out)
35ea11ff
HV		 609 return 0;
610 break;
611 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
a399810c 612 if (ops->vidioc_try_fmt_sliced_vbi_cap)
35ea11ff
HV		 613 return 0;
614 break;
615 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
a399810c 616 if (ops->vidioc_try_fmt_sliced_vbi_out)
35ea11ff
HV		 617 return 0;
618 break;
619 case V4L2_BUF_TYPE_PRIVATE:
a399810c 620 if (ops->vidioc_try_fmt_type_private)
35ea11ff
HV		 621 return 0;
622 break;
623 }
624 return -EINVAL;
625}
626
069b7479 627static long __video_do_ioctl(struct file *file,
35ea11ff
HV		 628 unsigned int cmd, void *arg)
629{
630 struct video_device *vfd = video_devdata(file);
a399810c 631 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
d5fbf32f 632 void *fh = file->private_data;
069b7479 633 long ret = -EINVAL;
35ea11ff
HV		 634
635 if ((vfd->debug & V4L2_DEBUG_IOCTL) &&
636 !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
637 v4l_print_ioctl(vfd->name, cmd);
638 printk(KERN_CONT "\n");
639 }
640
a399810c
HV		 641 if (ops == NULL) {
642 printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n",
643 vfd->name);
644 return -EINVAL;
645 }
646
35ea11ff
HV		 647#ifdef CONFIG_VIDEO_V4L1_COMPAT
648 /***********************************************************
649 Handles calls to the obsoleted V4L1 API
650 Due to the nature of VIDIOCGMBUF, each driver that supports
651 V4L1 should implement its own handler for this ioctl.
652 ***********************************************************/
653
654 /* --- streaming capture ------------------------------------- */
655 if (cmd == VIDIOCGMBUF) {
656 struct video_mbuf *p = arg;
657
658 memset(p, 0, sizeof(*p));
659
a399810c 660 if (!ops->vidiocgmbuf)
35ea11ff 661 return ret;
a399810c 662 ret = ops->vidiocgmbuf(file, fh, p);
35ea11ff
HV		 663 if (!ret)
664 dbgarg(cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
665 p->size, p->frames,
666 (unsigned long)p->offsets);
667 return ret;
668 }
669
670 /********************************************************
671 All other V4L1 calls are handled by v4l1_compat module.
672 Those calls will be translated into V4L2 calls, and
673 __video_do_ioctl will be called again, with one or more
674 V4L2 ioctls.
675 ********************************************************/
888fe747 676 if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE)
b1f88407 677 return v4l_compat_translate_ioctl(file, cmd, arg,
35ea11ff
HV		 678 __video_do_ioctl);
679#endif
680
681 switch (cmd) {
682 /* --- capabilities ------------------------------------------ */
683 case VIDIOC_QUERYCAP:
684 {
685 struct v4l2_capability *cap = (struct v4l2_capability *)arg;
686 memset(cap, 0, sizeof(*cap));
687
a399810c 688 if (!ops->vidioc_querycap)
35ea11ff
HV		 689 break;
690
a399810c 691 ret = ops->vidioc_querycap(file, fh, cap);
35ea11ff
HV		 692 if (!ret)
693 dbgarg(cmd, "driver=%s, card=%s, bus=%s, "
694 "version=0x%08x, "
695 "capabilities=0x%08x\n",
696 cap->driver, cap->card, cap->bus_info,
697 cap->version,
698 cap->capabilities);
699 break;
700 }
701
702 /* --- priority ------------------------------------------ */
703 case VIDIOC_G_PRIORITY:
704 {
705 enum v4l2_priority *p = arg;
706
a399810c 707 if (!ops->vidioc_g_priority)
35ea11ff 708 break;
a399810c 709 ret = ops->vidioc_g_priority(file, fh, p);
35ea11ff
HV		 710 if (!ret)
711 dbgarg(cmd, "priority is %d\n", *p);
712 break;
713 }
714 case VIDIOC_S_PRIORITY:
715 {
716 enum v4l2_priority *p = arg;
717
a399810c 718 if (!ops->vidioc_s_priority)
35ea11ff
HV		 719 break;
720 dbgarg(cmd, "setting priority to %d\n", *p);
a399810c 721 ret = ops->vidioc_s_priority(file, fh, *p);
35ea11ff
HV		 722 break;
723 }
724
725 /* --- capture ioctls ---------------------------------------- */
726 case VIDIOC_ENUM_FMT:
727 {
728 struct v4l2_fmtdesc *f = arg;
35ea11ff 729
19c96e4b 730 switch (f->type) {
35ea11ff 731 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
a399810c
HV		 732 if (ops->vidioc_enum_fmt_vid_cap)
733 ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f);
35ea11ff
HV		 734 break;
735 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
a399810c
HV		 736 if (ops->vidioc_enum_fmt_vid_overlay)
737 ret = ops->vidioc_enum_fmt_vid_overlay(file,
35ea11ff
HV		 738 fh, f);
739 break;
35ea11ff 740 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
a399810c
HV		 741 if (ops->vidioc_enum_fmt_vid_out)
742 ret = ops->vidioc_enum_fmt_vid_out(file, fh, f);
35ea11ff
HV		 743 break;
744 case V4L2_BUF_TYPE_PRIVATE:
a399810c
HV		 745 if (ops->vidioc_enum_fmt_type_private)
746 ret = ops->vidioc_enum_fmt_type_private(file,
35ea11ff
HV		 747 fh, f);
748 break;
749 default:
750 break;
751 }
752 if (!ret)
753 dbgarg(cmd, "index=%d, type=%d, flags=%d, "
754 "pixelformat=%c%c%c%c, description='%s'\n",
755 f->index, f->type, f->flags,
756 (f->pixelformat & 0xff),
757 (f->pixelformat >> 8) & 0xff,
758 (f->pixelformat >> 16) & 0xff,
759 (f->pixelformat >> 24) & 0xff,
760 f->description);
761 break;
762 }
763 case VIDIOC_G_FMT:
764 {
765 struct v4l2_format *f = (struct v4l2_format *)arg;
766
35ea11ff
HV		 767 /* FIXME: Should be one dump per type */
768 dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
769
770 switch (f->type) {
771 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
a399810c
HV		 772 if (ops->vidioc_g_fmt_vid_cap)
773 ret = ops->vidioc_g_fmt_vid_cap(file, fh, f);
35ea11ff
HV		 774 if (!ret)
775 v4l_print_pix_fmt(vfd, &f->fmt.pix);
776 break;
777 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
a399810c
HV		 778 if (ops->vidioc_g_fmt_vid_overlay)
779 ret = ops->vidioc_g_fmt_vid_overlay(file,
35ea11ff
HV		 780 fh, f);
781 break;
782 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
a399810c
HV		 783 if (ops->vidioc_g_fmt_vid_out)
784 ret = ops->vidioc_g_fmt_vid_out(file, fh, f);
35ea11ff
HV		 785 if (!ret)
786 v4l_print_pix_fmt(vfd, &f->fmt.pix);
787 break;
788 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
a399810c
HV		 789 if (ops->vidioc_g_fmt_vid_out_overlay)
790 ret = ops->vidioc_g_fmt_vid_out_overlay(file,
35ea11ff
HV		 791 fh, f);
792 break;
793 case V4L2_BUF_TYPE_VBI_CAPTURE:
a399810c
HV		 794 if (ops->vidioc_g_fmt_vbi_cap)
795 ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f);
35ea11ff
HV		 796 break;
797 case V4L2_BUF_TYPE_VBI_OUTPUT:
a399810c
HV		 798 if (ops->vidioc_g_fmt_vbi_out)
799 ret = ops->vidioc_g_fmt_vbi_out(file, fh, f);
35ea11ff
HV		 800 break;
801 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
a399810c
HV		 802 if (ops->vidioc_g_fmt_sliced_vbi_cap)
803 ret = ops->vidioc_g_fmt_sliced_vbi_cap(file,
35ea11ff
HV		 804 fh, f);
805 break;
806 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
a399810c
HV		 807 if (ops->vidioc_g_fmt_sliced_vbi_out)
808 ret = ops->vidioc_g_fmt_sliced_vbi_out(file,
35ea11ff
HV		 809 fh, f);
810 break;
811 case V4L2_BUF_TYPE_PRIVATE:
a399810c
HV		 812 if (ops->vidioc_g_fmt_type_private)
813 ret = ops->vidioc_g_fmt_type_private(file,
35ea11ff
HV		 814 fh, f);
815 break;
816 }
817
818 break;
819 }
820 case VIDIOC_S_FMT:
821 {
822 struct v4l2_format *f = (struct v4l2_format *)arg;
823
824 /* FIXME: Should be one dump per type */
825 dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names));
826
827 switch (f->type) {
828 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
829 v4l_print_pix_fmt(vfd, &f->fmt.pix);
a399810c
HV		 830 if (ops->vidioc_s_fmt_vid_cap)
831 ret = ops->vidioc_s_fmt_vid_cap(file, fh, f);
35ea11ff
HV		 832 break;
833 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
a399810c
HV		 834 if (ops->vidioc_s_fmt_vid_overlay)
835 ret = ops->vidioc_s_fmt_vid_overlay(file,
35ea11ff
HV		 836 fh, f);
837 break;
838 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
839 v4l_print_pix_fmt(vfd, &f->fmt.pix);
a399810c
HV		 840 if (ops->vidioc_s_fmt_vid_out)
841 ret = ops->vidioc_s_fmt_vid_out(file, fh, f);
35ea11ff
HV		 842 break;
843 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
a399810c
HV		 844 if (ops->vidioc_s_fmt_vid_out_overlay)
845 ret = ops->vidioc_s_fmt_vid_out_overlay(file,
35ea11ff
HV		 846 fh, f);
847 break;
848 case V4L2_BUF_TYPE_VBI_CAPTURE:
a399810c
HV		 849 if (ops->vidioc_s_fmt_vbi_cap)
850 ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f);
35ea11ff
HV		 851 break;
852 case V4L2_BUF_TYPE_VBI_OUTPUT:
a399810c
HV		 853 if (ops->vidioc_s_fmt_vbi_out)
854 ret = ops->vidioc_s_fmt_vbi_out(file, fh, f);
35ea11ff
HV		 855 break;
856 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
a399810c
HV		 857 if (ops->vidioc_s_fmt_sliced_vbi_cap)
858 ret = ops->vidioc_s_fmt_sliced_vbi_cap(file,
35ea11ff
HV		 859 fh, f);
860 break;
861 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
a399810c
HV		 862 if (ops->vidioc_s_fmt_sliced_vbi_out)
863 ret = ops->vidioc_s_fmt_sliced_vbi_out(file,
35ea11ff
HV		 864 fh, f);
865 break;
866 case V4L2_BUF_TYPE_PRIVATE:
a399810c
HV		 867 if (ops->vidioc_s_fmt_type_private)
868 ret = ops->vidioc_s_fmt_type_private(file,
35ea11ff
HV		 869 fh, f);
870 break;
871 }
872 break;
873 }
874 case VIDIOC_TRY_FMT:
875 {
876 struct v4l2_format *f = (struct v4l2_format *)arg;
877
878 /* FIXME: Should be one dump per type */
879 dbgarg(cmd, "type=%s\n", prt_names(f->type,
880 v4l2_type_names));
881 switch (f->type) {
882 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
a399810c
HV		 883 if (ops->vidioc_try_fmt_vid_cap)
884 ret = ops->vidioc_try_fmt_vid_cap(file, fh, f);
35ea11ff
HV		 885 if (!ret)
886 v4l_print_pix_fmt(vfd, &f->fmt.pix);
887 break;
888 case V4L2_BUF_TYPE_VIDEO_OVERLAY:
a399810c
HV		 889 if (ops->vidioc_try_fmt_vid_overlay)
890 ret = ops->vidioc_try_fmt_vid_overlay(file,
35ea11ff
HV		 891 fh, f);
892 break;
893 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
a399810c
HV		 894 if (ops->vidioc_try_fmt_vid_out)
895 ret = ops->vidioc_try_fmt_vid_out(file, fh, f);
35ea11ff
HV		 896 if (!ret)
897 v4l_print_pix_fmt(vfd, &f->fmt.pix);
898 break;
899 case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY:
a399810c
HV		 900 if (ops->vidioc_try_fmt_vid_out_overlay)
901 ret = ops->vidioc_try_fmt_vid_out_overlay(file,
35ea11ff
HV		 902 fh, f);
903 break;
904 case V4L2_BUF_TYPE_VBI_CAPTURE:
a399810c
HV		 905 if (ops->vidioc_try_fmt_vbi_cap)
906 ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f);
35ea11ff
HV		 907 break;
908 case V4L2_BUF_TYPE_VBI_OUTPUT:
a399810c
HV		 909 if (ops->vidioc_try_fmt_vbi_out)
910 ret = ops->vidioc_try_fmt_vbi_out(file, fh, f);
35ea11ff
HV		 911 break;
912 case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
a399810c
HV		 913 if (ops->vidioc_try_fmt_sliced_vbi_cap)
914 ret = ops->vidioc_try_fmt_sliced_vbi_cap(file,
35ea11ff
HV		 915 fh, f);
916 break;
917 case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
a399810c
HV		 918 if (ops->vidioc_try_fmt_sliced_vbi_out)
919 ret = ops->vidioc_try_fmt_sliced_vbi_out(file,
35ea11ff
HV		 920 fh, f);
921 break;
922 case V4L2_BUF_TYPE_PRIVATE:
a399810c
HV		 923 if (ops->vidioc_try_fmt_type_private)
924 ret = ops->vidioc_try_fmt_type_private(file,
35ea11ff
HV		 925 fh, f);
926 break;
927 }
928
929 break;
930 }
931 /* FIXME: Those buf reqs could be handled here,
932 with some changes on videobuf to allow its header to be included at
933 videodev2.h or being merged at videodev2.
934 */
935 case VIDIOC_REQBUFS:
936 {
937 struct v4l2_requestbuffers *p = arg;
938
a399810c 939 if (!ops->vidioc_reqbufs)
35ea11ff 940 break;
a399810c 941 ret = check_fmt(ops, p->type);
35ea11ff
HV		 942 if (ret)
943 break;
944
a399810c 945 ret = ops->vidioc_reqbufs(file, fh, p);
35ea11ff
HV		 946 dbgarg(cmd, "count=%d, type=%s, memory=%s\n",
947 p->count,
948 prt_names(p->type, v4l2_type_names),
949 prt_names(p->memory, v4l2_memory_names));
950 break;
951 }
952 case VIDIOC_QUERYBUF:
953 {
954 struct v4l2_buffer *p = arg;
955
a399810c 956 if (!ops->vidioc_querybuf)
35ea11ff 957 break;
a399810c 958 ret = check_fmt(ops, p->type);
35ea11ff
HV		 959 if (ret)
960 break;
961
a399810c 962 ret = ops->vidioc_querybuf(file, fh, p);
35ea11ff
HV		 963 if (!ret)
964 dbgbuf(cmd, vfd, p);
965 break;
966 }
967 case VIDIOC_QBUF:
968 {
969 struct v4l2_buffer *p = arg;
970
a399810c 971 if (!ops->vidioc_qbuf)
35ea11ff 972 break;
a399810c 973 ret = check_fmt(ops, p->type);
35ea11ff
HV		 974 if (ret)
975 break;
976
a399810c 977 ret = ops->vidioc_qbuf(file, fh, p);
35ea11ff
HV		 978 if (!ret)
979 dbgbuf(cmd, vfd, p);
980 break;
981 }
982 case VIDIOC_DQBUF:
983 {
984 struct v4l2_buffer *p = arg;
985
a399810c 986 if (!ops->vidioc_dqbuf)
35ea11ff 987 break;
a399810c 988 ret = check_fmt(ops, p->type);
35ea11ff
HV		 989 if (ret)
990 break;
991
a399810c 992 ret = ops->vidioc_dqbuf(file, fh, p);
35ea11ff
HV		 993 if (!ret)
994 dbgbuf(cmd, vfd, p);
995 break;
996 }
997 case VIDIOC_OVERLAY:
998 {
999 int *i = arg;
1000
a399810c 1001 if (!ops->vidioc_overlay)
35ea11ff
HV		 1002 break;
1003 dbgarg(cmd, "value=%d\n", *i);
a399810c 1004 ret = ops->vidioc_overlay(file, fh, *i);
35ea11ff
HV		 1005 break;
1006 }
1007 case VIDIOC_G_FBUF:
1008 {
1009 struct v4l2_framebuffer *p = arg;
1010
a399810c 1011 if (!ops->vidioc_g_fbuf)
35ea11ff 1012 break;
a399810c 1013 ret = ops->vidioc_g_fbuf(file, fh, arg);
35ea11ff
HV		 1014 if (!ret) {
1015 dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
1016 p->capability, p->flags,
1017 (unsigned long)p->base);
1018 v4l_print_pix_fmt(vfd, &p->fmt);
1019 }
1020 break;
1021 }
1022 case VIDIOC_S_FBUF:
1023 {
1024 struct v4l2_framebuffer *p = arg;
1025
a399810c 1026 if (!ops->vidioc_s_fbuf)
35ea11ff
HV		 1027 break;
1028 dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n",
1029 p->capability, p->flags, (unsigned long)p->base);
1030 v4l_print_pix_fmt(vfd, &p->fmt);
a399810c 1031 ret = ops->vidioc_s_fbuf(file, fh, arg);
35ea11ff
HV		 1032 break;
1033 }
1034 case VIDIOC_STREAMON:
1035 {
1036 enum v4l2_buf_type i = *(int *)arg;
1037
a399810c 1038 if (!ops->vidioc_streamon)
35ea11ff
HV		 1039 break;
1040 dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
a399810c 1041 ret = ops->vidioc_streamon(file, fh, i);
35ea11ff
HV		 1042 break;
1043 }
1044 case VIDIOC_STREAMOFF:
1045 {
1046 enum v4l2_buf_type i = *(int *)arg;
1047
a399810c 1048 if (!ops->vidioc_streamoff)
35ea11ff
HV		 1049 break;
1050 dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names));
a399810c 1051 ret = ops->vidioc_streamoff(file, fh, i);
35ea11ff
HV		 1052 break;
1053 }
1054 /* ---------- tv norms ---------- */
1055 case VIDIOC_ENUMSTD:
1056 {
1057 struct v4l2_standard *p = arg;
1058 v4l2_std_id id = vfd->tvnorms, curr_id = 0;
1059 unsigned int index = p->index, i, j = 0;
1060 const char *descr = "";
1061
1062 /* Return norm array in a canonical way */
1063 for (i = 0; i <= index && id; i++) {
1064 /* last std value in the standards array is 0, so this
1065 while always ends there since (id & 0) == 0. */
1066 while ((id & standards[j].std) != standards[j].std)
1067 j++;
1068 curr_id = standards[j].std;
1069 descr = standards[j].descr;
1070 j++;
1071 if (curr_id == 0)
1072 break;
1073 if (curr_id != V4L2_STD_PAL &&
1074 curr_id != V4L2_STD_SECAM &&
1075 curr_id != V4L2_STD_NTSC)
1076 id &= ~curr_id;
1077 }
1078 if (i <= index)
1079 return -EINVAL;
1080
1081 v4l2_video_std_construct(p, curr_id, descr);
1082 p->index = index;
1083
1084 dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, "
1085 "framelines=%d\n", p->index,
1086 (unsigned long long)p->id, p->name,
1087 p->frameperiod.numerator,
1088 p->frameperiod.denominator,
1089 p->framelines);
1090
1091 ret = 0;
1092 break;
1093 }
1094 case VIDIOC_G_STD:
1095 {
1096 v4l2_std_id *id = arg;
1097
1098 ret = 0;
1099 /* Calls the specific handler */
a399810c
HV		 1100 if (ops->vidioc_g_std)
1101 ret = ops->vidioc_g_std(file, fh, id);
35ea11ff
HV		 1102 else
1103 *id = vfd->current_norm;
1104
1105 if (!ret)
1106 dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id);
1107 break;
1108 }
1109 case VIDIOC_S_STD:
1110 {
1111 v4l2_std_id *id = arg, norm;
1112
1113 dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id);
1114
1115 norm = (*id) & vfd->tvnorms;
1116 if (vfd->tvnorms && !norm) /* Check if std is supported */
1117 break;
1118
1119 /* Calls the specific handler */
a399810c
HV		 1120 if (ops->vidioc_s_std)
1121 ret = ops->vidioc_s_std(file, fh, &norm);
35ea11ff
HV		 1122 else
1123 ret = -EINVAL;
1124
1125 /* Updates standard information */
1126 if (ret >= 0)
1127 vfd->current_norm = norm;
1128 break;
1129 }
1130 case VIDIOC_QUERYSTD:
1131 {
1132 v4l2_std_id *p = arg;
1133
a399810c 1134 if (!ops->vidioc_querystd)
35ea11ff 1135 break;
a399810c 1136 ret = ops->vidioc_querystd(file, fh, arg);
35ea11ff
HV		 1137 if (!ret)
1138 dbgarg(cmd, "detected std=%08Lx\n",
1139 (unsigned long long)*p);
1140 break;
1141 }
1142 /* ------ input switching ---------- */
1143 /* FIXME: Inputs can be handled inside videodev2 */
1144 case VIDIOC_ENUMINPUT:
1145 {
1146 struct v4l2_input *p = arg;
35ea11ff 1147
a399810c 1148 if (!ops->vidioc_enum_input)
35ea11ff 1149 break;
35ea11ff 1150
a399810c 1151 ret = ops->vidioc_enum_input(file, fh, p);
35ea11ff
HV		 1152 if (!ret)
1153 dbgarg(cmd, "index=%d, name=%s, type=%d, "
1154 "audioset=%d, "
1155 "tuner=%d, std=%08Lx, status=%d\n",
1156 p->index, p->name, p->type, p->audioset,
1157 p->tuner,
1158 (unsigned long long)p->std,
1159 p->status);
1160 break;
1161 }
1162 case VIDIOC_G_INPUT:
1163 {
1164 unsigned int *i = arg;
1165
a399810c 1166 if (!ops->vidioc_g_input)
35ea11ff 1167 break;
a399810c 1168 ret = ops->vidioc_g_input(file, fh, i);
35ea11ff
HV		 1169 if (!ret)
1170 dbgarg(cmd, "value=%d\n", *i);
1171 break;
1172 }
1173 case VIDIOC_S_INPUT:
1174 {
1175 unsigned int *i = arg;
1176
a399810c 1177 if (!ops->vidioc_s_input)
35ea11ff
HV		 1178 break;
1179 dbgarg(cmd, "value=%d\n", *i);
a399810c 1180 ret = ops->vidioc_s_input(file, fh, *i);
35ea11ff
HV		 1181 break;
1182 }
1183
1184 /* ------ output switching ---------- */
1185 case VIDIOC_ENUMOUTPUT:
1186 {
1187 struct v4l2_output *p = arg;
35ea11ff 1188
a399810c 1189 if (!ops->vidioc_enum_output)
35ea11ff 1190 break;
35ea11ff 1191
a399810c 1192 ret = ops->vidioc_enum_output(file, fh, p);
35ea11ff
HV		 1193 if (!ret)
1194 dbgarg(cmd, "index=%d, name=%s, type=%d, "
1195 "audioset=0x%x, "
1196 "modulator=%d, std=0x%08Lx\n",
1197 p->index, p->name, p->type, p->audioset,
1198 p->modulator, (unsigned long long)p->std);
1199 break;
1200 }
1201 case VIDIOC_G_OUTPUT:
1202 {
1203 unsigned int *i = arg;
1204
a399810c 1205 if (!ops->vidioc_g_output)
35ea11ff 1206 break;
a399810c 1207 ret = ops->vidioc_g_output(file, fh, i);
35ea11ff
HV		 1208 if (!ret)
1209 dbgarg(cmd, "value=%d\n", *i);
1210 break;
1211 }
1212 case VIDIOC_S_OUTPUT:
1213 {
1214 unsigned int *i = arg;
1215
a399810c 1216 if (!ops->vidioc_s_output)
35ea11ff
HV		 1217 break;
1218 dbgarg(cmd, "value=%d\n", *i);
a399810c 1219 ret = ops->vidioc_s_output(file, fh, *i);
35ea11ff
HV		 1220 break;
1221 }
1222
1223 /* --- controls ---------------------------------------------- */
1224 case VIDIOC_QUERYCTRL:
1225 {
1226 struct v4l2_queryctrl *p = arg;
1227
a399810c 1228 if (!ops->vidioc_queryctrl)
35ea11ff 1229 break;
a399810c 1230 ret = ops->vidioc_queryctrl(file, fh, p);
35ea11ff
HV		 1231 if (!ret)
1232 dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, "
1233 "step=%d, default=%d, flags=0x%08x\n",
1234 p->id, p->type, p->name,
1235 p->minimum, p->maximum,
1236 p->step, p->default_value, p->flags);
1237 else
1238 dbgarg(cmd, "id=0x%x\n", p->id);
1239 break;
1240 }
1241 case VIDIOC_G_CTRL:
1242 {
1243 struct v4l2_control *p = arg;
1244
a399810c
HV		 1245 if (ops->vidioc_g_ctrl)
1246 ret = ops->vidioc_g_ctrl(file, fh, p);
1247 else if (ops->vidioc_g_ext_ctrls) {
35ea11ff
HV		 1248 struct v4l2_ext_controls ctrls;
1249 struct v4l2_ext_control ctrl;
1250
1251 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1252 ctrls.count = 1;
1253 ctrls.controls = &ctrl;
1254 ctrl.id = p->id;
1255 ctrl.value = p->value;
1256 if (check_ext_ctrls(&ctrls, 1)) {
a399810c 1257 ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls);
35ea11ff
HV		 1258 if (ret == 0)
1259 p->value = ctrl.value;
1260 }
1261 } else
1262 break;
1263 if (!ret)
1264 dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
1265 else
1266 dbgarg(cmd, "id=0x%x\n", p->id);
1267 break;
1268 }
1269 case VIDIOC_S_CTRL:
1270 {
1271 struct v4l2_control *p = arg;
1272 struct v4l2_ext_controls ctrls;
1273 struct v4l2_ext_control ctrl;
1274
a399810c 1275 if (!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1276 break;
1277
1278 dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value);
1279
a399810c
HV		 1280 if (ops->vidioc_s_ctrl) {
1281 ret = ops->vidioc_s_ctrl(file, fh, p);
35ea11ff
HV		 1282 break;
1283 }
a399810c 1284 if (!ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1285 break;
1286
1287 ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id);
1288 ctrls.count = 1;
1289 ctrls.controls = &ctrl;
1290 ctrl.id = p->id;
1291 ctrl.value = p->value;
1292 if (check_ext_ctrls(&ctrls, 1))
a399810c 1293 ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls);
35ea11ff
HV		 1294 break;
1295 }
1296 case VIDIOC_G_EXT_CTRLS:
1297 {
1298 struct v4l2_ext_controls *p = arg;
1299
1300 p->error_idx = p->count;
a399810c 1301 if (!ops->vidioc_g_ext_ctrls)
35ea11ff
HV		 1302 break;
1303 if (check_ext_ctrls(p, 0))
a399810c 1304 ret = ops->vidioc_g_ext_ctrls(file, fh, p);
35ea11ff
HV		 1305 v4l_print_ext_ctrls(cmd, vfd, p, !ret);
1306 break;
1307 }
1308 case VIDIOC_S_EXT_CTRLS:
1309 {
1310 struct v4l2_ext_controls *p = arg;
1311
1312 p->error_idx = p->count;
a399810c 1313 if (!ops->vidioc_s_ext_ctrls)
35ea11ff
HV		 1314 break;
1315 v4l_print_ext_ctrls(cmd, vfd, p, 1);
1316 if (check_ext_ctrls(p, 0))
a399810c 1317 ret = ops->vidioc_s_ext_ctrls(file, fh, p);
35ea11ff
HV		 1318 break;
1319 }
1320 case VIDIOC_TRY_EXT_CTRLS:
1321 {
1322 struct v4l2_ext_controls *p = arg;
1323
1324 p->error_idx = p->count;
a399810c 1325 if (!ops->vidioc_try_ext_ctrls)
35ea11ff
HV		 1326 break;
1327 v4l_print_ext_ctrls(cmd, vfd, p, 1);
1328 if (check_ext_ctrls(p, 0))
a399810c 1329 ret = ops->vidioc_try_ext_ctrls(file, fh, p);
35ea11ff
HV		 1330 break;
1331 }
1332 case VIDIOC_QUERYMENU:
1333 {
1334 struct v4l2_querymenu *p = arg;
1335
a399810c 1336 if (!ops->vidioc_querymenu)
35ea11ff 1337 break;
a399810c 1338 ret = ops->vidioc_querymenu(file, fh, p);
35ea11ff
HV		 1339 if (!ret)
1340 dbgarg(cmd, "id=0x%x, index=%d, name=%s\n",
1341 p->id, p->index, p->name);
1342 else
1343 dbgarg(cmd, "id=0x%x, index=%d\n",
1344 p->id, p->index);
1345 break;
1346 }
1347 /* --- audio ---------------------------------------------- */
1348 case VIDIOC_ENUMAUDIO:
1349 {
1350 struct v4l2_audio *p = arg;
1351
a399810c 1352 if (!ops->vidioc_enumaudio)
35ea11ff 1353 break;
a399810c 1354 ret = ops->vidioc_enumaudio(file, fh, p);
35ea11ff
HV		 1355 if (!ret)
1356 dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
1357 "mode=0x%x\n", p->index, p->name,
1358 p->capability, p->mode);
1359 else
1360 dbgarg(cmd, "index=%d\n", p->index);
1361 break;
1362 }
1363 case VIDIOC_G_AUDIO:
1364 {
1365 struct v4l2_audio *p = arg;
35ea11ff 1366
a399810c 1367 if (!ops->vidioc_g_audio)
35ea11ff
HV		 1368 break;
1369
1370 memset(p, 0, sizeof(*p));
a399810c 1371 ret = ops->vidioc_g_audio(file, fh, p);
35ea11ff
HV		 1372 if (!ret)
1373 dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
1374 "mode=0x%x\n", p->index,
1375 p->name, p->capability, p->mode);
1376 else
1377 dbgarg(cmd, "index=%d\n", p->index);
1378 break;
1379 }
1380 case VIDIOC_S_AUDIO:
1381 {
1382 struct v4l2_audio *p = arg;
1383
a399810c 1384 if (!ops->vidioc_s_audio)
35ea11ff
HV		 1385 break;
1386 dbgarg(cmd, "index=%d, name=%s, capability=0x%x, "
1387 "mode=0x%x\n", p->index, p->name,
1388 p->capability, p->mode);
a399810c 1389 ret = ops->vidioc_s_audio(file, fh, p);
35ea11ff
HV		 1390 break;
1391 }
1392 case VIDIOC_ENUMAUDOUT:
1393 {
1394 struct v4l2_audioout *p = arg;
1395
a399810c 1396 if (!ops->vidioc_enumaudout)
35ea11ff
HV		 1397 break;
1398 dbgarg(cmd, "Enum for index=%d\n", p->index);
a399810c 1399 ret = ops->vidioc_enumaudout(file, fh, p);
35ea11ff
HV		 1400 if (!ret)
1401 dbgarg2("index=%d, name=%s, capability=%d, "
1402 "mode=%d\n", p->index, p->name,
1403 p->capability, p->mode);
1404 break;
1405 }
1406 case VIDIOC_G_AUDOUT:
1407 {
1408 struct v4l2_audioout *p = arg;
1409
a399810c 1410 if (!ops->vidioc_g_audout)
35ea11ff
HV		 1411 break;
1412 dbgarg(cmd, "Enum for index=%d\n", p->index);
a399810c 1413 ret = ops->vidioc_g_audout(file, fh, p);
35ea11ff
HV		 1414 if (!ret)
1415 dbgarg2("index=%d, name=%s, capability=%d, "
1416 "mode=%d\n", p->index, p->name,
1417 p->capability, p->mode);
1418 break;
1419 }
1420 case VIDIOC_S_AUDOUT:
1421 {
1422 struct v4l2_audioout *p = arg;
1423
a399810c 1424 if (!ops->vidioc_s_audout)
35ea11ff
HV		 1425 break;
1426 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1427 "mode=%d\n", p->index, p->name,
1428 p->capability, p->mode);
1429
a399810c 1430 ret = ops->vidioc_s_audout(file, fh, p);
35ea11ff
HV		 1431 break;
1432 }
1433 case VIDIOC_G_MODULATOR:
1434 {
1435 struct v4l2_modulator *p = arg;
1436
a399810c 1437 if (!ops->vidioc_g_modulator)
35ea11ff 1438 break;
a399810c 1439 ret = ops->vidioc_g_modulator(file, fh, p);
35ea11ff
HV		 1440 if (!ret)
1441 dbgarg(cmd, "index=%d, name=%s, "
1442 "capability=%d, rangelow=%d,"
1443 " rangehigh=%d, txsubchans=%d\n",
1444 p->index, p->name, p->capability,
1445 p->rangelow, p->rangehigh,
1446 p->txsubchans);
1447 break;
1448 }
1449 case VIDIOC_S_MODULATOR:
1450 {
1451 struct v4l2_modulator *p = arg;
1452
a399810c 1453 if (!ops->vidioc_s_modulator)
35ea11ff
HV		 1454 break;
1455 dbgarg(cmd, "index=%d, name=%s, capability=%d, "
1456 "rangelow=%d, rangehigh=%d, txsubchans=%d\n",
1457 p->index, p->name, p->capability, p->rangelow,
1458 p->rangehigh, p->txsubchans);
a399810c 1459 ret = ops->vidioc_s_modulator(file, fh, p);
35ea11ff
HV		 1460 break;
1461 }
1462 case VIDIOC_G_CROP:
1463 {
1464 struct v4l2_crop *p = arg;
1465
a399810c 1466 if (!ops->vidioc_g_crop)
35ea11ff 1467 break;
a56a18c3 1468
35ea11ff 1469 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
a399810c 1470 ret = ops->vidioc_g_crop(file, fh, p);
35ea11ff
HV		 1471 if (!ret)
1472 dbgrect(vfd, "", &p->c);
1473 break;
1474 }
1475 case VIDIOC_S_CROP:
1476 {
1477 struct v4l2_crop *p = arg;
1478
a399810c 1479 if (!ops->vidioc_s_crop)
35ea11ff
HV		 1480 break;
1481 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
1482 dbgrect(vfd, "", &p->c);
a399810c 1483 ret = ops->vidioc_s_crop(file, fh, p);
35ea11ff
HV		 1484 break;
1485 }
1486 case VIDIOC_CROPCAP:
1487 {
1488 struct v4l2_cropcap *p = arg;
1489
1490 /*FIXME: Should also show v4l2_fract pixelaspect */
a399810c 1491 if (!ops->vidioc_cropcap)
35ea11ff 1492 break;
a56a18c3 1493
35ea11ff 1494 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
a399810c 1495 ret = ops->vidioc_cropcap(file, fh, p);
35ea11ff
HV		 1496 if (!ret) {
1497 dbgrect(vfd, "bounds ", &p->bounds);
1498 dbgrect(vfd, "defrect ", &p->defrect);
1499 }
1500 break;
1501 }
1502 case VIDIOC_G_JPEGCOMP:
1503 {
1504 struct v4l2_jpegcompression *p = arg;
1505
a399810c 1506 if (!ops->vidioc_g_jpegcomp)
35ea11ff 1507 break;
a56a18c3
MCC		 1508
1509 memset(p, 0, sizeof(*p));
1510
a399810c 1511 ret = ops->vidioc_g_jpegcomp(file, fh, p);
35ea11ff
HV		 1512 if (!ret)
1513 dbgarg(cmd, "quality=%d, APPn=%d, "
1514 "APP_len=%d, COM_len=%d, "
1515 "jpeg_markers=%d\n",
1516 p->quality, p->APPn, p->APP_len,
1517 p->COM_len, p->jpeg_markers);
1518 break;
1519 }
1520 case VIDIOC_S_JPEGCOMP:
1521 {
1522 struct v4l2_jpegcompression *p = arg;
1523
a399810c 1524 if (!ops->vidioc_g_jpegcomp)
35ea11ff
HV		 1525 break;
1526 dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, "
1527 "COM_len=%d, jpeg_markers=%d\n",
1528 p->quality, p->APPn, p->APP_len,
1529 p->COM_len, p->jpeg_markers);
a399810c 1530 ret = ops->vidioc_s_jpegcomp(file, fh, p);
35ea11ff
HV		 1531 break;
1532 }
1533 case VIDIOC_G_ENC_INDEX:
1534 {
1535 struct v4l2_enc_idx *p = arg;
1536
a399810c 1537 if (!ops->vidioc_g_enc_index)
35ea11ff 1538 break;
a399810c 1539 ret = ops->vidioc_g_enc_index(file, fh, p);
35ea11ff
HV		 1540 if (!ret)
1541 dbgarg(cmd, "entries=%d, entries_cap=%d\n",
1542 p->entries, p->entries_cap);
1543 break;
1544 }
1545 case VIDIOC_ENCODER_CMD:
1546 {
1547 struct v4l2_encoder_cmd *p = arg;
1548
a399810c 1549 if (!ops->vidioc_encoder_cmd)
35ea11ff 1550 break;
a399810c 1551 ret = ops->vidioc_encoder_cmd(file, fh, p);
35ea11ff
HV		 1552 if (!ret)
1553 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1554 break;
1555 }
1556 case VIDIOC_TRY_ENCODER_CMD:
1557 {
1558 struct v4l2_encoder_cmd *p = arg;
1559
a399810c 1560 if (!ops->vidioc_try_encoder_cmd)
35ea11ff 1561 break;
a399810c 1562 ret = ops->vidioc_try_encoder_cmd(file, fh, p);
35ea11ff
HV		 1563 if (!ret)
1564 dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags);
1565 break;
1566 }
1567 case VIDIOC_G_PARM:
1568 {
1569 struct v4l2_streamparm *p = arg;
35ea11ff 1570
a399810c
HV		 1571 if (ops->vidioc_g_parm) {
1572 ret = ops->vidioc_g_parm(file, fh, p);
35ea11ff
HV		 1573 } else {
1574 struct v4l2_standard s;
1575
1576 if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1577 return -EINVAL;
1578
1579 v4l2_video_std_construct(&s, vfd->current_norm,
1580 v4l2_norm_to_name(vfd->current_norm));
1581
1582 p->parm.capture.timeperframe = s.frameperiod;
1583 ret = 0;
1584 }
1585
1586 dbgarg(cmd, "type=%d\n", p->type);
1587 break;
1588 }
1589 case VIDIOC_S_PARM:
1590 {
1591 struct v4l2_streamparm *p = arg;
1592
a399810c 1593 if (!ops->vidioc_s_parm)
35ea11ff
HV		 1594 break;
1595 dbgarg(cmd, "type=%d\n", p->type);
a399810c 1596 ret = ops->vidioc_s_parm(file, fh, p);
35ea11ff
HV		 1597 break;
1598 }
1599 case VIDIOC_G_TUNER:
1600 {
1601 struct v4l2_tuner *p = arg;
35ea11ff 1602
a399810c 1603 if (!ops->vidioc_g_tuner)
35ea11ff
HV		 1604 break;
1605
a399810c 1606 ret = ops->vidioc_g_tuner(file, fh, p);
35ea11ff
HV		 1607 if (!ret)
1608 dbgarg(cmd, "index=%d, name=%s, type=%d, "
1609 "capability=0x%x, rangelow=%d, "
1610 "rangehigh=%d, signal=%d, afc=%d, "
1611 "rxsubchans=0x%x, audmode=%d\n",
1612 p->index, p->name, p->type,
1613 p->capability, p->rangelow,
1614 p->rangehigh, p->signal, p->afc,
1615 p->rxsubchans, p->audmode);
1616 break;
1617 }
1618 case VIDIOC_S_TUNER:
1619 {
1620 struct v4l2_tuner *p = arg;
1621
a399810c 1622 if (!ops->vidioc_s_tuner)
35ea11ff
HV		 1623 break;
1624 dbgarg(cmd, "index=%d, name=%s, type=%d, "
1625 "capability=0x%x, rangelow=%d, "
1626 "rangehigh=%d, signal=%d, afc=%d, "
1627 "rxsubchans=0x%x, audmode=%d\n",
1628 p->index, p->name, p->type,
1629 p->capability, p->rangelow,
1630 p->rangehigh, p->signal, p->afc,
1631 p->rxsubchans, p->audmode);
a399810c 1632 ret = ops->vidioc_s_tuner(file, fh, p);
35ea11ff
HV		 1633 break;
1634 }
1635 case VIDIOC_G_FREQUENCY:
1636 {
1637 struct v4l2_frequency *p = arg;
1638
a399810c 1639 if (!ops->vidioc_g_frequency)
35ea11ff
HV		 1640 break;
1641
a399810c 1642 ret = ops->vidioc_g_frequency(file, fh, p);
35ea11ff
HV		 1643 if (!ret)
1644 dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
1645 p->tuner, p->type, p->frequency);
1646 break;
1647 }
1648 case VIDIOC_S_FREQUENCY:
1649 {
1650 struct v4l2_frequency *p = arg;
1651
a399810c 1652 if (!ops->vidioc_s_frequency)
35ea11ff
HV		 1653 break;
1654 dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n",
1655 p->tuner, p->type, p->frequency);
a399810c 1656 ret = ops->vidioc_s_frequency(file, fh, p);
35ea11ff
HV		 1657 break;
1658 }
1659 case VIDIOC_G_SLICED_VBI_CAP:
1660 {
1661 struct v4l2_sliced_vbi_cap *p = arg;
35ea11ff 1662
a399810c 1663 if (!ops->vidioc_g_sliced_vbi_cap)
35ea11ff 1664 break;
19c96e4b
TP		 1665
1666 /* Clear up to type, everything after type is zerod already */
1667 memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type));
1668
35ea11ff 1669 dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names));
a399810c 1670 ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p);
35ea11ff
HV		 1671 if (!ret)
1672 dbgarg2("service_set=%d\n", p->service_set);
1673 break;
1674 }
1675 case VIDIOC_LOG_STATUS:
1676 {
a399810c 1677 if (!ops->vidioc_log_status)
35ea11ff 1678 break;
a399810c 1679 ret = ops->vidioc_log_status(file, fh);
35ea11ff
HV		 1680 break;
1681 }
1682#ifdef CONFIG_VIDEO_ADV_DEBUG
1683 case VIDIOC_DBG_G_REGISTER:
1684 {
aecde8b5 1685 struct v4l2_dbg_register *p = arg;
35ea11ff
HV		 1686
1687 if (!capable(CAP_SYS_ADMIN))
1688 ret = -EPERM;
a399810c
HV		 1689 else if (ops->vidioc_g_register)
1690 ret = ops->vidioc_g_register(file, fh, p);
35ea11ff
HV		 1691 break;
1692 }
1693 case VIDIOC_DBG_S_REGISTER:
1694 {
aecde8b5 1695 struct v4l2_dbg_register *p = arg;
35ea11ff
HV		 1696
1697 if (!capable(CAP_SYS_ADMIN))
1698 ret = -EPERM;
a399810c
HV		 1699 else if (ops->vidioc_s_register)
1700 ret = ops->vidioc_s_register(file, fh, p);
35ea11ff
HV		 1701 break;
1702 }
1703#endif
aecde8b5 1704 case VIDIOC_DBG_G_CHIP_IDENT:
35ea11ff 1705 {
aecde8b5 1706 struct v4l2_dbg_chip_ident *p = arg;
35ea11ff 1707
a399810c 1708 if (!ops->vidioc_g_chip_ident)
35ea11ff 1709 break;
80b36e0f
HV		 1710 p->ident = V4L2_IDENT_NONE;
1711 p->revision = 0;
a399810c 1712 ret = ops->vidioc_g_chip_ident(file, fh, p);
35ea11ff
HV		 1713 if (!ret)
1714 dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision);
1715 break;
1716 }
aecde8b5
HV		 1717 case VIDIOC_G_CHIP_IDENT_OLD:
1718 printk(KERN_ERR "VIDIOC_G_CHIP_IDENT has been deprecated and will disappear in 2.6.30.\n");
1719 printk(KERN_ERR "It is a debugging ioctl and must not be used in applications!\n");
1720 return -EINVAL;
1721
35ea11ff
HV		 1722 case VIDIOC_S_HW_FREQ_SEEK:
1723 {
1724 struct v4l2_hw_freq_seek *p = arg;
1725
a399810c 1726 if (!ops->vidioc_s_hw_freq_seek)
35ea11ff
HV		 1727 break;
1728 dbgarg(cmd,
1729 "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n",
1730 p->tuner, p->type, p->seek_upward, p->wrap_around);
a399810c
HV		 1731 ret = ops->vidioc_s_hw_freq_seek(file, fh, p);
1732 break;
1733 }
74d83fa0
MCC		 1734 case VIDIOC_ENUM_FRAMESIZES:
1735 {
1736 struct v4l2_frmsizeenum *p = arg;
1737
1738 if (!ops->vidioc_enum_framesizes)
1739 break;
1740
74d83fa0
MCC		 1741 ret = ops->vidioc_enum_framesizes(file, fh, p);
1742 dbgarg(cmd,
1743 "index=%d, pixelformat=%d, type=%d ",
1744 p->index, p->pixel_format, p->type);
1745 switch (p->type) {
1746 case V4L2_FRMSIZE_TYPE_DISCRETE:
1747 dbgarg2("width = %d, height=%d\n",
1748 p->discrete.width, p->discrete.height);
1749 break;
1750 case V4L2_FRMSIZE_TYPE_STEPWISE:
1751 dbgarg2("min %dx%d, max %dx%d, step %dx%d\n",
1752 p->stepwise.min_width, p->stepwise.min_height,
1753 p->stepwise.step_width, p->stepwise.step_height,
1754 p->stepwise.max_width, p->stepwise.max_height);
1755 break;
1756 case V4L2_FRMSIZE_TYPE_CONTINUOUS:
1757 dbgarg2("continuous\n");
1758 break;
1759 default:
1760 dbgarg2("- Unknown type!\n");
1761 }
1762
1763 break;
1764 }
1765 case VIDIOC_ENUM_FRAMEINTERVALS:
1766 {
1767 struct v4l2_frmivalenum *p = arg;
1768
1769 if (!ops->vidioc_enum_frameintervals)
1770 break;
1771
74d83fa0
MCC		 1772 ret = ops->vidioc_enum_frameintervals(file, fh, p);
1773 dbgarg(cmd,
1774 "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ",
1775 p->index, p->pixel_format,
1776 p->width, p->height, p->type);
1777 switch (p->type) {
1778 case V4L2_FRMIVAL_TYPE_DISCRETE:
1779 dbgarg2("fps=%d/%d\n",
1780 p->discrete.numerator,
1781 p->discrete.denominator);
1782 break;
1783 case V4L2_FRMIVAL_TYPE_STEPWISE:
1958578d
MCC		 1784 dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n",
1785 p->stepwise.min.numerator,
1786 p->stepwise.min.denominator,
1787 p->stepwise.max.numerator,
1788 p->stepwise.max.denominator,
1789 p->stepwise.step.numerator,
1790 p->stepwise.step.denominator);
74d83fa0
MCC		 1791 break;
1792 case V4L2_FRMIVAL_TYPE_CONTINUOUS:
1793 dbgarg2("continuous\n");
1794 break;
1795 default:
1796 dbgarg2("- Unknown type!\n");
1797 }
1798 break;
1799 }
1800
a399810c
HV		 1801 default:
1802 {
1803 if (!ops->vidioc_default)
1804 break;
1805 ret = ops->vidioc_default(file, fh, cmd, arg);
35ea11ff
HV		 1806 break;
1807 }
1808 } /* switch */
1809
1810 if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
1811 if (ret < 0) {
1812 v4l_print_ioctl(vfd->name, cmd);
069b7479 1813 printk(KERN_CONT " error %ld\n", ret);
35ea11ff
HV		 1814 }
1815 }
1816
1817 return ret;
1818}
1819
19c96e4b
TP		 1820/* In some cases, only a few fields are used as input, i.e. when the app sets
1821 * "index" and then the driver fills in the rest of the structure for the thing
1822 * with that index. We only need to copy up the first non-input field. */
1823static unsigned long cmd_input_size(unsigned int cmd)
1824{
1825 /* Size of structure up to and including 'field' */
1826#define CMDINSIZE(cmd, type, field) case _IOC_NR(VIDIOC_##cmd): return \
1827 offsetof(struct v4l2_##type, field) + \
1828 sizeof(((struct v4l2_##type *)0)->field);
1829
1830 switch (_IOC_NR(cmd)) {
1831 CMDINSIZE(ENUM_FMT, fmtdesc, type);
1832 CMDINSIZE(G_FMT, format, type);
1833 CMDINSIZE(QUERYBUF, buffer, type);
1834 CMDINSIZE(G_PARM, streamparm, type);
1835 CMDINSIZE(ENUMSTD, standard, index);
1836 CMDINSIZE(ENUMINPUT, input, index);
1837 CMDINSIZE(G_CTRL, control, id);
1838 CMDINSIZE(G_TUNER, tuner, index);
1839 CMDINSIZE(QUERYCTRL, queryctrl, id);
1840 CMDINSIZE(QUERYMENU, querymenu, index);
1841 CMDINSIZE(ENUMOUTPUT, output, index);
1842 CMDINSIZE(G_MODULATOR, modulator, index);
1843 CMDINSIZE(G_FREQUENCY, frequency, tuner);
1844 CMDINSIZE(CROPCAP, cropcap, type);
1845 CMDINSIZE(G_CROP, crop, type);
1846 CMDINSIZE(ENUMAUDIO, audio, index);
1847 CMDINSIZE(ENUMAUDOUT, audioout, index);
1848 CMDINSIZE(ENCODER_CMD, encoder_cmd, flags);
1849 CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags);
1850 CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type);
1851 CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format);
1852 CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height);
1853 default:
1854 return _IOC_SIZE(cmd);
1855 }
1856}
1857
069b7479 1858long video_ioctl2(struct file *file,
35ea11ff
HV		 1859 unsigned int cmd, unsigned long arg)
1860{
1861 char sbuf[128];
1862 void *mbuf = NULL;
1863 void *parg = NULL;
069b7479 1864 long err = -EINVAL;
35ea11ff
HV		 1865 int is_ext_ctrl;
1866 size_t ctrls_size = 0;
1867 void __user *user_ptr = NULL;
1868
1869#ifdef __OLD_VIDIOC_
1870 cmd = video_fix_command(cmd);
1871#endif
1872 is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
1873 cmd == VIDIOC_TRY_EXT_CTRLS);
1874
1875 /* Copy arguments into temp kernel buffer */
1876 switch (_IOC_DIR(cmd)) {
1877 case _IOC_NONE:
1878 parg = NULL;
1879 break;
1880 case _IOC_READ:
1881 case _IOC_WRITE:
1882 case (_IOC_WRITE | _IOC_READ):
1883 if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
1884 parg = sbuf;
1885 } else {
1886 /* too big to allocate from stack */
1887 mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
1888 if (NULL == mbuf)
1889 return -ENOMEM;
1890 parg = mbuf;
1891 }
1892
1893 err = -EFAULT;
19c96e4b
TP		 1894 if (_IOC_DIR(cmd) & _IOC_WRITE) {
1895 unsigned long n = cmd_input_size(cmd);
1896
1897 if (copy_from_user(parg, (void __user *)arg, n))
35ea11ff 1898 goto out;
19c96e4b
TP		 1899
1900 /* zero out anything we don't copy from userspace */
1901 if (n < _IOC_SIZE(cmd))
1902 memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n);
1903 }
35ea11ff
HV		 1904 break;
1905 }
1906
1907 if (is_ext_ctrl) {
1908 struct v4l2_ext_controls *p = parg;
1909
1910 /* In case of an error, tell the caller that it wasn't
1911 a specific control that caused it. */
1912 p->error_idx = p->count;
1913 user_ptr = (void __user *)p->controls;
1914 if (p->count) {
1915 ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
1916 /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
1917 mbuf = kmalloc(ctrls_size, GFP_KERNEL);
1918 err = -ENOMEM;
1919 if (NULL == mbuf)
1920 goto out_ext_ctrl;
1921 err = -EFAULT;
1922 if (copy_from_user(mbuf, user_ptr, ctrls_size))
1923 goto out_ext_ctrl;
1924 p->controls = mbuf;
1925 }
1926 }
1927
1928 /* Handles IOCTL */
b1f88407 1929 err = __video_do_ioctl(file, cmd, parg);
35ea11ff
HV		 1930 if (err == -ENOIOCTLCMD)
1931 err = -EINVAL;
1932 if (is_ext_ctrl) {
1933 struct v4l2_ext_controls *p = parg;
1934
1935 p->controls = (void *)user_ptr;
1936 if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
1937 err = -EFAULT;
1938 goto out_ext_ctrl;
1939 }
1940 if (err < 0)
1941 goto out;
1942
1943out_ext_ctrl:
1944 /* Copy results into user buffer */
1945 switch (_IOC_DIR(cmd)) {
1946 case _IOC_READ:
1947 case (_IOC_WRITE | _IOC_READ):
1948 if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
1949 err = -EFAULT;
1950 break;
1951 }
1952
1953out:
1954 kfree(mbuf);
1955 return err;
1956}
8a522c91 1957EXPORT_SYMBOL(video_ioctl2);
ubuntu-bionic-kernel mirror