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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 */ | |
7e0a16f6 | 20 | #include <linux/videodev.h> |
35ea11ff HV |
21 | #include <linux/videodev2.h> |
22 | ||
23 | #ifdef CONFIG_VIDEO_V4L1 | |
24 | #include <linux/videodev.h> | |
25 | #endif | |
26 | #include <media/v4l2-common.h> | |
27 | #include <media/v4l2-ioctl.h> | |
80b36e0f | 28 | #include <media/v4l2-chip-ident.h> |
35ea11ff HV |
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 | ||
7ecc0cf9 TP |
45 | /* Zero out the end of the struct pointed to by p. Everthing after, but |
46 | * not including, the specified field is cleared. */ | |
47 | #define CLEAR_AFTER_FIELD(p, field) \ | |
48 | memset((u8 *)(p) + offsetof(typeof(*(p)), field) + sizeof((p)->field), \ | |
49 | 0, sizeof(*(p)) - offsetof(typeof(*(p)), field) - sizeof((p)->field)) | |
50 | ||
35ea11ff HV |
51 | struct std_descr { |
52 | v4l2_std_id std; | |
53 | const char *descr; | |
54 | }; | |
55 | ||
56 | static const struct std_descr standards[] = { | |
57 | { V4L2_STD_NTSC, "NTSC" }, | |
58 | { V4L2_STD_NTSC_M, "NTSC-M" }, | |
59 | { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, | |
60 | { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, | |
61 | { V4L2_STD_NTSC_443, "NTSC-443" }, | |
62 | { V4L2_STD_PAL, "PAL" }, | |
63 | { V4L2_STD_PAL_BG, "PAL-BG" }, | |
64 | { V4L2_STD_PAL_B, "PAL-B" }, | |
65 | { V4L2_STD_PAL_B1, "PAL-B1" }, | |
66 | { V4L2_STD_PAL_G, "PAL-G" }, | |
67 | { V4L2_STD_PAL_H, "PAL-H" }, | |
68 | { V4L2_STD_PAL_I, "PAL-I" }, | |
69 | { V4L2_STD_PAL_DK, "PAL-DK" }, | |
70 | { V4L2_STD_PAL_D, "PAL-D" }, | |
71 | { V4L2_STD_PAL_D1, "PAL-D1" }, | |
72 | { V4L2_STD_PAL_K, "PAL-K" }, | |
73 | { V4L2_STD_PAL_M, "PAL-M" }, | |
74 | { V4L2_STD_PAL_N, "PAL-N" }, | |
75 | { V4L2_STD_PAL_Nc, "PAL-Nc" }, | |
76 | { V4L2_STD_PAL_60, "PAL-60" }, | |
77 | { V4L2_STD_SECAM, "SECAM" }, | |
78 | { V4L2_STD_SECAM_B, "SECAM-B" }, | |
79 | { V4L2_STD_SECAM_G, "SECAM-G" }, | |
80 | { V4L2_STD_SECAM_H, "SECAM-H" }, | |
81 | { V4L2_STD_SECAM_DK, "SECAM-DK" }, | |
82 | { V4L2_STD_SECAM_D, "SECAM-D" }, | |
83 | { V4L2_STD_SECAM_K, "SECAM-K" }, | |
84 | { V4L2_STD_SECAM_K1, "SECAM-K1" }, | |
85 | { V4L2_STD_SECAM_L, "SECAM-L" }, | |
86 | { V4L2_STD_SECAM_LC, "SECAM-Lc" }, | |
87 | { 0, "Unknown" } | |
88 | }; | |
89 | ||
90 | /* video4linux standard ID conversion to standard name | |
91 | */ | |
92 | const char *v4l2_norm_to_name(v4l2_std_id id) | |
93 | { | |
94 | u32 myid = id; | |
95 | int i; | |
96 | ||
97 | /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle | |
98 | 64 bit comparations. So, on that architecture, with some gcc | |
99 | variants, compilation fails. Currently, the max value is 30bit wide. | |
100 | */ | |
101 | BUG_ON(myid != id); | |
102 | ||
103 | for (i = 0; standards[i].std; i++) | |
104 | if (myid == standards[i].std) | |
105 | break; | |
106 | return standards[i].descr; | |
107 | } | |
108 | EXPORT_SYMBOL(v4l2_norm_to_name); | |
109 | ||
51f0b8d5 TP |
110 | /* Returns frame period for the given standard */ |
111 | void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) | |
112 | { | |
113 | if (id & V4L2_STD_525_60) { | |
114 | frameperiod->numerator = 1001; | |
115 | frameperiod->denominator = 30000; | |
116 | } else { | |
117 | frameperiod->numerator = 1; | |
118 | frameperiod->denominator = 25; | |
119 | } | |
120 | } | |
121 | EXPORT_SYMBOL(v4l2_video_std_frame_period); | |
122 | ||
35ea11ff HV |
123 | /* Fill in the fields of a v4l2_standard structure according to the |
124 | 'id' and 'transmission' parameters. Returns negative on error. */ | |
125 | int v4l2_video_std_construct(struct v4l2_standard *vs, | |
126 | int id, const char *name) | |
127 | { | |
51f0b8d5 TP |
128 | vs->id = id; |
129 | v4l2_video_std_frame_period(id, &vs->frameperiod); | |
130 | vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; | |
35ea11ff HV |
131 | strlcpy(vs->name, name, sizeof(vs->name)); |
132 | return 0; | |
133 | } | |
134 | EXPORT_SYMBOL(v4l2_video_std_construct); | |
135 | ||
136 | /* ----------------------------------------------------------------- */ | |
137 | /* some arrays for pretty-printing debug messages of enum types */ | |
138 | ||
139 | const char *v4l2_field_names[] = { | |
140 | [V4L2_FIELD_ANY] = "any", | |
141 | [V4L2_FIELD_NONE] = "none", | |
142 | [V4L2_FIELD_TOP] = "top", | |
143 | [V4L2_FIELD_BOTTOM] = "bottom", | |
144 | [V4L2_FIELD_INTERLACED] = "interlaced", | |
145 | [V4L2_FIELD_SEQ_TB] = "seq-tb", | |
146 | [V4L2_FIELD_SEQ_BT] = "seq-bt", | |
147 | [V4L2_FIELD_ALTERNATE] = "alternate", | |
148 | [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", | |
149 | [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", | |
150 | }; | |
151 | EXPORT_SYMBOL(v4l2_field_names); | |
152 | ||
153 | const char *v4l2_type_names[] = { | |
154 | [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", | |
155 | [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", | |
156 | [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", | |
157 | [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", | |
158 | [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", | |
159 | [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", | |
160 | [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", | |
161 | [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", | |
162 | }; | |
163 | EXPORT_SYMBOL(v4l2_type_names); | |
164 | ||
165 | static const char *v4l2_memory_names[] = { | |
166 | [V4L2_MEMORY_MMAP] = "mmap", | |
167 | [V4L2_MEMORY_USERPTR] = "userptr", | |
168 | [V4L2_MEMORY_OVERLAY] = "overlay", | |
169 | }; | |
170 | ||
171 | #define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \ | |
172 | arr[a] : "unknown") | |
173 | ||
174 | /* ------------------------------------------------------------------ */ | |
175 | /* debug help functions */ | |
176 | ||
177 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
178 | static const char *v4l1_ioctls[] = { | |
179 | [_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP", | |
180 | [_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN", | |
181 | [_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN", | |
182 | [_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER", | |
183 | [_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER", | |
184 | [_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT", | |
185 | [_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT", | |
186 | [_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE", | |
187 | [_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN", | |
188 | [_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN", | |
189 | [_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF", | |
190 | [_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF", | |
191 | [_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY", | |
192 | [_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ", | |
193 | [_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ", | |
194 | [_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO", | |
195 | [_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO", | |
196 | [_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC", | |
197 | [_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE", | |
198 | [_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF", | |
199 | [_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT", | |
200 | [_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE", | |
201 | [_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE", | |
202 | [_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE", | |
203 | [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE", | |
204 | [_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO", | |
205 | [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE", | |
206 | [_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT", | |
207 | [_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT" | |
208 | }; | |
209 | #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls) | |
210 | #endif | |
211 | ||
212 | static const char *v4l2_ioctls[] = { | |
213 | [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", | |
214 | [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", | |
215 | [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", | |
216 | [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", | |
217 | [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", | |
218 | [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", | |
219 | [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", | |
220 | [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", | |
221 | [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", | |
222 | [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", | |
223 | [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", | |
224 | [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", | |
225 | [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", | |
226 | [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", | |
227 | [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", | |
228 | [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", | |
229 | [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", | |
230 | [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", | |
231 | [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", | |
232 | [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", | |
233 | [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", | |
234 | [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", | |
235 | [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", | |
236 | [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", | |
237 | [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", | |
238 | [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", | |
239 | [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", | |
240 | [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", | |
241 | [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", | |
242 | [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", | |
243 | [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", | |
244 | [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", | |
245 | [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", | |
246 | [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", | |
247 | [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", | |
248 | [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", | |
249 | [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", | |
250 | [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", | |
251 | [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", | |
252 | [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", | |
253 | [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", | |
254 | [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", | |
255 | [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", | |
256 | [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", | |
257 | [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", | |
258 | [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", | |
259 | [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO", | |
260 | [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT", | |
261 | [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY", | |
262 | [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY", | |
263 | [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", | |
264 | [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS", | |
265 | [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS", | |
266 | [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS", | |
267 | [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS", | |
268 | #if 1 | |
269 | [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES", | |
270 | [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS", | |
271 | [_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX", | |
272 | [_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD", | |
273 | [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD", | |
274 | ||
275 | [_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER", | |
276 | [_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER", | |
277 | ||
aecde8b5 | 278 | [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT", |
35ea11ff HV |
279 | [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK", |
280 | #endif | |
281 | }; | |
282 | #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) | |
283 | ||
35ea11ff HV |
284 | /* Common ioctl debug function. This function can be used by |
285 | external ioctl messages as well as internal V4L ioctl */ | |
286 | void v4l_printk_ioctl(unsigned int cmd) | |
287 | { | |
288 | char *dir, *type; | |
289 | ||
290 | switch (_IOC_TYPE(cmd)) { | |
291 | case 'd': | |
78a3b4db HV |
292 | type = "v4l2_int"; |
293 | break; | |
35ea11ff HV |
294 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
295 | case 'v': | |
296 | if (_IOC_NR(cmd) >= V4L1_IOCTLS) { | |
297 | type = "v4l1"; | |
298 | break; | |
299 | } | |
300 | printk("%s", v4l1_ioctls[_IOC_NR(cmd)]); | |
301 | return; | |
302 | #endif | |
303 | case 'V': | |
304 | if (_IOC_NR(cmd) >= V4L2_IOCTLS) { | |
305 | type = "v4l2"; | |
306 | break; | |
307 | } | |
308 | printk("%s", v4l2_ioctls[_IOC_NR(cmd)]); | |
309 | return; | |
310 | default: | |
311 | type = "unknown"; | |
312 | } | |
313 | ||
314 | switch (_IOC_DIR(cmd)) { | |
315 | case _IOC_NONE: dir = "--"; break; | |
316 | case _IOC_READ: dir = "r-"; break; | |
317 | case _IOC_WRITE: dir = "-w"; break; | |
318 | case _IOC_READ | _IOC_WRITE: dir = "rw"; break; | |
319 | default: dir = "*ERR*"; break; | |
320 | } | |
321 | printk("%s ioctl '%c', dir=%s, #%d (0x%08x)", | |
322 | type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); | |
323 | } | |
324 | EXPORT_SYMBOL(v4l_printk_ioctl); | |
325 | ||
326 | /* | |
327 | * helper function -- handles userspace copying for ioctl arguments | |
328 | */ | |
329 | ||
330 | #ifdef __OLD_VIDIOC_ | |
331 | static unsigned int | |
332 | video_fix_command(unsigned int cmd) | |
333 | { | |
334 | switch (cmd) { | |
335 | case VIDIOC_OVERLAY_OLD: | |
336 | cmd = VIDIOC_OVERLAY; | |
337 | break; | |
338 | case VIDIOC_S_PARM_OLD: | |
339 | cmd = VIDIOC_S_PARM; | |
340 | break; | |
341 | case VIDIOC_S_CTRL_OLD: | |
342 | cmd = VIDIOC_S_CTRL; | |
343 | break; | |
344 | case VIDIOC_G_AUDIO_OLD: | |
345 | cmd = VIDIOC_G_AUDIO; | |
346 | break; | |
347 | case VIDIOC_G_AUDOUT_OLD: | |
348 | cmd = VIDIOC_G_AUDOUT; | |
349 | break; | |
350 | case VIDIOC_CROPCAP_OLD: | |
351 | cmd = VIDIOC_CROPCAP; | |
352 | break; | |
353 | } | |
354 | return cmd; | |
355 | } | |
356 | #endif | |
357 | ||
358 | /* | |
359 | * Obsolete usercopy function - Should be removed soon | |
360 | */ | |
069b7479 | 361 | long |
f473bf76 HV |
362 | video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, |
363 | v4l2_kioctl func) | |
35ea11ff HV |
364 | { |
365 | char sbuf[128]; | |
366 | void *mbuf = NULL; | |
367 | void *parg = NULL; | |
069b7479 | 368 | long err = -EINVAL; |
35ea11ff HV |
369 | int is_ext_ctrl; |
370 | size_t ctrls_size = 0; | |
371 | void __user *user_ptr = NULL; | |
372 | ||
373 | #ifdef __OLD_VIDIOC_ | |
374 | cmd = video_fix_command(cmd); | |
375 | #endif | |
376 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
377 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
378 | ||
379 | /* Copy arguments into temp kernel buffer */ | |
380 | switch (_IOC_DIR(cmd)) { | |
381 | case _IOC_NONE: | |
382 | parg = NULL; | |
383 | break; | |
384 | case _IOC_READ: | |
385 | case _IOC_WRITE: | |
386 | case (_IOC_WRITE | _IOC_READ): | |
387 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { | |
388 | parg = sbuf; | |
389 | } else { | |
390 | /* too big to allocate from stack */ | |
391 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
392 | if (NULL == mbuf) | |
393 | return -ENOMEM; | |
394 | parg = mbuf; | |
395 | } | |
396 | ||
397 | err = -EFAULT; | |
398 | if (_IOC_DIR(cmd) & _IOC_WRITE) | |
399 | if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) | |
400 | goto out; | |
401 | break; | |
402 | } | |
403 | if (is_ext_ctrl) { | |
404 | struct v4l2_ext_controls *p = parg; | |
405 | ||
406 | /* In case of an error, tell the caller that it wasn't | |
407 | a specific control that caused it. */ | |
408 | p->error_idx = p->count; | |
409 | user_ptr = (void __user *)p->controls; | |
410 | if (p->count) { | |
411 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
412 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
413 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
414 | err = -ENOMEM; | |
415 | if (NULL == mbuf) | |
416 | goto out_ext_ctrl; | |
417 | err = -EFAULT; | |
418 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
419 | goto out_ext_ctrl; | |
420 | p->controls = mbuf; | |
421 | } | |
422 | } | |
423 | ||
424 | /* call driver */ | |
f473bf76 | 425 | err = func(file, cmd, parg); |
35ea11ff HV |
426 | if (err == -ENOIOCTLCMD) |
427 | err = -EINVAL; | |
428 | if (is_ext_ctrl) { | |
429 | struct v4l2_ext_controls *p = parg; | |
430 | ||
431 | p->controls = (void *)user_ptr; | |
432 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
433 | err = -EFAULT; | |
434 | goto out_ext_ctrl; | |
435 | } | |
436 | if (err < 0) | |
437 | goto out; | |
438 | ||
439 | out_ext_ctrl: | |
440 | /* Copy results into user buffer */ | |
441 | switch (_IOC_DIR(cmd)) { | |
442 | case _IOC_READ: | |
443 | case (_IOC_WRITE | _IOC_READ): | |
444 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
445 | err = -EFAULT; | |
446 | break; | |
447 | } | |
448 | ||
449 | out: | |
450 | kfree(mbuf); | |
451 | return err; | |
452 | } | |
453 | EXPORT_SYMBOL(video_usercopy); | |
454 | ||
455 | static void dbgbuf(unsigned int cmd, struct video_device *vfd, | |
456 | struct v4l2_buffer *p) | |
457 | { | |
458 | struct v4l2_timecode *tc = &p->timecode; | |
459 | ||
460 | dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, " | |
461 | "bytesused=%d, flags=0x%08d, " | |
462 | "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n", | |
463 | p->timestamp.tv_sec / 3600, | |
464 | (int)(p->timestamp.tv_sec / 60) % 60, | |
465 | (int)(p->timestamp.tv_sec % 60), | |
b045979d | 466 | (long)p->timestamp.tv_usec, |
35ea11ff HV |
467 | p->index, |
468 | prt_names(p->type, v4l2_type_names), | |
469 | p->bytesused, p->flags, | |
470 | p->field, p->sequence, | |
471 | prt_names(p->memory, v4l2_memory_names), | |
472 | p->m.userptr, p->length); | |
473 | dbgarg2("timecode=%02d:%02d:%02d type=%d, " | |
474 | "flags=0x%08d, frames=%d, userbits=0x%08x\n", | |
475 | tc->hours, tc->minutes, tc->seconds, | |
476 | tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); | |
477 | } | |
478 | ||
479 | static inline void dbgrect(struct video_device *vfd, char *s, | |
480 | struct v4l2_rect *r) | |
481 | { | |
482 | dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top, | |
483 | r->width, r->height); | |
484 | }; | |
485 | ||
486 | static inline void v4l_print_pix_fmt(struct video_device *vfd, | |
487 | struct v4l2_pix_format *fmt) | |
488 | { | |
489 | dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, " | |
490 | "bytesperline=%d sizeimage=%d, colorspace=%d\n", | |
491 | fmt->width, fmt->height, | |
492 | (fmt->pixelformat & 0xff), | |
493 | (fmt->pixelformat >> 8) & 0xff, | |
494 | (fmt->pixelformat >> 16) & 0xff, | |
495 | (fmt->pixelformat >> 24) & 0xff, | |
496 | prt_names(fmt->field, v4l2_field_names), | |
497 | fmt->bytesperline, fmt->sizeimage, fmt->colorspace); | |
498 | }; | |
499 | ||
500 | static inline void v4l_print_ext_ctrls(unsigned int cmd, | |
501 | struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals) | |
502 | { | |
503 | __u32 i; | |
504 | ||
505 | if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) | |
506 | return; | |
507 | dbgarg(cmd, ""); | |
508 | printk(KERN_CONT "class=0x%x", c->ctrl_class); | |
509 | for (i = 0; i < c->count; i++) { | |
510 | if (show_vals) | |
511 | printk(KERN_CONT " id/val=0x%x/0x%x", | |
512 | c->controls[i].id, c->controls[i].value); | |
513 | else | |
514 | printk(KERN_CONT " id=0x%x", c->controls[i].id); | |
515 | } | |
516 | printk(KERN_CONT "\n"); | |
517 | }; | |
518 | ||
519 | static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) | |
520 | { | |
521 | __u32 i; | |
522 | ||
523 | /* zero the reserved fields */ | |
524 | c->reserved[0] = c->reserved[1] = 0; | |
525 | for (i = 0; i < c->count; i++) { | |
526 | c->controls[i].reserved2[0] = 0; | |
527 | c->controls[i].reserved2[1] = 0; | |
528 | } | |
529 | /* V4L2_CID_PRIVATE_BASE cannot be used as control class | |
530 | when using extended controls. | |
531 | Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL | |
532 | is it allowed for backwards compatibility. | |
533 | */ | |
534 | if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) | |
535 | return 0; | |
536 | /* Check that all controls are from the same control class. */ | |
537 | for (i = 0; i < c->count; i++) { | |
538 | if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { | |
539 | c->error_idx = i; | |
540 | return 0; | |
541 | } | |
542 | } | |
543 | return 1; | |
544 | } | |
545 | ||
a399810c | 546 | static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type) |
35ea11ff | 547 | { |
a399810c HV |
548 | if (ops == NULL) |
549 | return -EINVAL; | |
550 | ||
35ea11ff HV |
551 | switch (type) { |
552 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
1175d613 | 553 | if (ops->vidioc_g_fmt_vid_cap) |
35ea11ff HV |
554 | return 0; |
555 | break; | |
556 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
1175d613 | 557 | if (ops->vidioc_g_fmt_vid_overlay) |
35ea11ff HV |
558 | return 0; |
559 | break; | |
560 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
1175d613 | 561 | if (ops->vidioc_g_fmt_vid_out) |
35ea11ff HV |
562 | return 0; |
563 | break; | |
564 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
1175d613 | 565 | if (ops->vidioc_g_fmt_vid_out_overlay) |
35ea11ff HV |
566 | return 0; |
567 | break; | |
568 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
1175d613 | 569 | if (ops->vidioc_g_fmt_vbi_cap) |
35ea11ff HV |
570 | return 0; |
571 | break; | |
572 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
1175d613 | 573 | if (ops->vidioc_g_fmt_vbi_out) |
35ea11ff HV |
574 | return 0; |
575 | break; | |
576 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
1175d613 | 577 | if (ops->vidioc_g_fmt_sliced_vbi_cap) |
35ea11ff HV |
578 | return 0; |
579 | break; | |
580 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
1175d613 | 581 | if (ops->vidioc_g_fmt_sliced_vbi_out) |
35ea11ff HV |
582 | return 0; |
583 | break; | |
584 | case V4L2_BUF_TYPE_PRIVATE: | |
1175d613 | 585 | if (ops->vidioc_g_fmt_type_private) |
35ea11ff HV |
586 | return 0; |
587 | break; | |
588 | } | |
589 | return -EINVAL; | |
590 | } | |
591 | ||
069b7479 | 592 | static long __video_do_ioctl(struct file *file, |
35ea11ff HV |
593 | unsigned int cmd, void *arg) |
594 | { | |
595 | struct video_device *vfd = video_devdata(file); | |
a399810c | 596 | const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; |
d5fbf32f | 597 | void *fh = file->private_data; |
069b7479 | 598 | long ret = -EINVAL; |
35ea11ff HV |
599 | |
600 | if ((vfd->debug & V4L2_DEBUG_IOCTL) && | |
601 | !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) { | |
602 | v4l_print_ioctl(vfd->name, cmd); | |
603 | printk(KERN_CONT "\n"); | |
604 | } | |
605 | ||
a399810c HV |
606 | if (ops == NULL) { |
607 | printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n", | |
608 | vfd->name); | |
609 | return -EINVAL; | |
610 | } | |
611 | ||
35ea11ff HV |
612 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
613 | /*********************************************************** | |
614 | Handles calls to the obsoleted V4L1 API | |
615 | Due to the nature of VIDIOCGMBUF, each driver that supports | |
616 | V4L1 should implement its own handler for this ioctl. | |
617 | ***********************************************************/ | |
618 | ||
619 | /* --- streaming capture ------------------------------------- */ | |
620 | if (cmd == VIDIOCGMBUF) { | |
621 | struct video_mbuf *p = arg; | |
622 | ||
a399810c | 623 | if (!ops->vidiocgmbuf) |
35ea11ff | 624 | return ret; |
a399810c | 625 | ret = ops->vidiocgmbuf(file, fh, p); |
35ea11ff HV |
626 | if (!ret) |
627 | dbgarg(cmd, "size=%d, frames=%d, offsets=0x%08lx\n", | |
628 | p->size, p->frames, | |
629 | (unsigned long)p->offsets); | |
630 | return ret; | |
631 | } | |
632 | ||
633 | /******************************************************** | |
634 | All other V4L1 calls are handled by v4l1_compat module. | |
635 | Those calls will be translated into V4L2 calls, and | |
636 | __video_do_ioctl will be called again, with one or more | |
637 | V4L2 ioctls. | |
638 | ********************************************************/ | |
888fe747 | 639 | if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE) |
b1f88407 | 640 | return v4l_compat_translate_ioctl(file, cmd, arg, |
35ea11ff HV |
641 | __video_do_ioctl); |
642 | #endif | |
643 | ||
644 | switch (cmd) { | |
645 | /* --- capabilities ------------------------------------------ */ | |
646 | case VIDIOC_QUERYCAP: | |
647 | { | |
648 | struct v4l2_capability *cap = (struct v4l2_capability *)arg; | |
35ea11ff | 649 | |
a399810c | 650 | if (!ops->vidioc_querycap) |
35ea11ff HV |
651 | break; |
652 | ||
a399810c | 653 | ret = ops->vidioc_querycap(file, fh, cap); |
35ea11ff HV |
654 | if (!ret) |
655 | dbgarg(cmd, "driver=%s, card=%s, bus=%s, " | |
656 | "version=0x%08x, " | |
657 | "capabilities=0x%08x\n", | |
658 | cap->driver, cap->card, cap->bus_info, | |
659 | cap->version, | |
660 | cap->capabilities); | |
661 | break; | |
662 | } | |
663 | ||
664 | /* --- priority ------------------------------------------ */ | |
665 | case VIDIOC_G_PRIORITY: | |
666 | { | |
667 | enum v4l2_priority *p = arg; | |
668 | ||
a399810c | 669 | if (!ops->vidioc_g_priority) |
35ea11ff | 670 | break; |
a399810c | 671 | ret = ops->vidioc_g_priority(file, fh, p); |
35ea11ff HV |
672 | if (!ret) |
673 | dbgarg(cmd, "priority is %d\n", *p); | |
674 | break; | |
675 | } | |
676 | case VIDIOC_S_PRIORITY: | |
677 | { | |
678 | enum v4l2_priority *p = arg; | |
679 | ||
a399810c | 680 | if (!ops->vidioc_s_priority) |
35ea11ff HV |
681 | break; |
682 | dbgarg(cmd, "setting priority to %d\n", *p); | |
a399810c | 683 | ret = ops->vidioc_s_priority(file, fh, *p); |
35ea11ff HV |
684 | break; |
685 | } | |
686 | ||
687 | /* --- capture ioctls ---------------------------------------- */ | |
688 | case VIDIOC_ENUM_FMT: | |
689 | { | |
690 | struct v4l2_fmtdesc *f = arg; | |
35ea11ff | 691 | |
19c96e4b | 692 | switch (f->type) { |
35ea11ff | 693 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
a399810c HV |
694 | if (ops->vidioc_enum_fmt_vid_cap) |
695 | ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
696 | break; |
697 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
698 | if (ops->vidioc_enum_fmt_vid_overlay) |
699 | ret = ops->vidioc_enum_fmt_vid_overlay(file, | |
35ea11ff HV |
700 | fh, f); |
701 | break; | |
35ea11ff | 702 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
a399810c HV |
703 | if (ops->vidioc_enum_fmt_vid_out) |
704 | ret = ops->vidioc_enum_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
705 | break; |
706 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
707 | if (ops->vidioc_enum_fmt_type_private) |
708 | ret = ops->vidioc_enum_fmt_type_private(file, | |
35ea11ff HV |
709 | fh, f); |
710 | break; | |
711 | default: | |
712 | break; | |
713 | } | |
714 | if (!ret) | |
715 | dbgarg(cmd, "index=%d, type=%d, flags=%d, " | |
716 | "pixelformat=%c%c%c%c, description='%s'\n", | |
717 | f->index, f->type, f->flags, | |
718 | (f->pixelformat & 0xff), | |
719 | (f->pixelformat >> 8) & 0xff, | |
720 | (f->pixelformat >> 16) & 0xff, | |
721 | (f->pixelformat >> 24) & 0xff, | |
722 | f->description); | |
723 | break; | |
724 | } | |
725 | case VIDIOC_G_FMT: | |
726 | { | |
727 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
728 | ||
35ea11ff HV |
729 | /* FIXME: Should be one dump per type */ |
730 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
731 | ||
732 | switch (f->type) { | |
733 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
734 | if (ops->vidioc_g_fmt_vid_cap) |
735 | ret = ops->vidioc_g_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
736 | if (!ret) |
737 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
738 | break; | |
739 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
740 | if (ops->vidioc_g_fmt_vid_overlay) |
741 | ret = ops->vidioc_g_fmt_vid_overlay(file, | |
35ea11ff HV |
742 | fh, f); |
743 | break; | |
744 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c HV |
745 | if (ops->vidioc_g_fmt_vid_out) |
746 | ret = ops->vidioc_g_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
747 | if (!ret) |
748 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
749 | break; | |
750 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
751 | if (ops->vidioc_g_fmt_vid_out_overlay) |
752 | ret = ops->vidioc_g_fmt_vid_out_overlay(file, | |
35ea11ff HV |
753 | fh, f); |
754 | break; | |
755 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
756 | if (ops->vidioc_g_fmt_vbi_cap) |
757 | ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
758 | break; |
759 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
760 | if (ops->vidioc_g_fmt_vbi_out) |
761 | ret = ops->vidioc_g_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
762 | break; |
763 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
764 | if (ops->vidioc_g_fmt_sliced_vbi_cap) |
765 | ret = ops->vidioc_g_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
766 | fh, f); |
767 | break; | |
768 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
769 | if (ops->vidioc_g_fmt_sliced_vbi_out) |
770 | ret = ops->vidioc_g_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
771 | fh, f); |
772 | break; | |
773 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
774 | if (ops->vidioc_g_fmt_type_private) |
775 | ret = ops->vidioc_g_fmt_type_private(file, | |
35ea11ff HV |
776 | fh, f); |
777 | break; | |
778 | } | |
779 | ||
780 | break; | |
781 | } | |
782 | case VIDIOC_S_FMT: | |
783 | { | |
784 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
785 | ||
786 | /* FIXME: Should be one dump per type */ | |
787 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
788 | ||
789 | switch (f->type) { | |
790 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
7ecc0cf9 | 791 | CLEAR_AFTER_FIELD(f, fmt.pix); |
35ea11ff | 792 | v4l_print_pix_fmt(vfd, &f->fmt.pix); |
a399810c HV |
793 | if (ops->vidioc_s_fmt_vid_cap) |
794 | ret = ops->vidioc_s_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
795 | break; |
796 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
7ecc0cf9 | 797 | CLEAR_AFTER_FIELD(f, fmt.win); |
a399810c HV |
798 | if (ops->vidioc_s_fmt_vid_overlay) |
799 | ret = ops->vidioc_s_fmt_vid_overlay(file, | |
35ea11ff HV |
800 | fh, f); |
801 | break; | |
802 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
7ecc0cf9 | 803 | CLEAR_AFTER_FIELD(f, fmt.pix); |
35ea11ff | 804 | v4l_print_pix_fmt(vfd, &f->fmt.pix); |
a399810c HV |
805 | if (ops->vidioc_s_fmt_vid_out) |
806 | ret = ops->vidioc_s_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
807 | break; |
808 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
7ecc0cf9 | 809 | CLEAR_AFTER_FIELD(f, fmt.win); |
a399810c HV |
810 | if (ops->vidioc_s_fmt_vid_out_overlay) |
811 | ret = ops->vidioc_s_fmt_vid_out_overlay(file, | |
35ea11ff HV |
812 | fh, f); |
813 | break; | |
814 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
7ecc0cf9 | 815 | CLEAR_AFTER_FIELD(f, fmt.vbi); |
a399810c HV |
816 | if (ops->vidioc_s_fmt_vbi_cap) |
817 | ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
818 | break; |
819 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
7ecc0cf9 | 820 | CLEAR_AFTER_FIELD(f, fmt.vbi); |
a399810c HV |
821 | if (ops->vidioc_s_fmt_vbi_out) |
822 | ret = ops->vidioc_s_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
823 | break; |
824 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
7ecc0cf9 | 825 | CLEAR_AFTER_FIELD(f, fmt.sliced); |
a399810c HV |
826 | if (ops->vidioc_s_fmt_sliced_vbi_cap) |
827 | ret = ops->vidioc_s_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
828 | fh, f); |
829 | break; | |
830 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
7ecc0cf9 | 831 | CLEAR_AFTER_FIELD(f, fmt.sliced); |
a399810c HV |
832 | if (ops->vidioc_s_fmt_sliced_vbi_out) |
833 | ret = ops->vidioc_s_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
834 | fh, f); |
835 | break; | |
836 | case V4L2_BUF_TYPE_PRIVATE: | |
7ecc0cf9 | 837 | /* CLEAR_AFTER_FIELD(f, fmt.raw_data); <- does nothing */ |
a399810c HV |
838 | if (ops->vidioc_s_fmt_type_private) |
839 | ret = ops->vidioc_s_fmt_type_private(file, | |
35ea11ff HV |
840 | fh, f); |
841 | break; | |
842 | } | |
843 | break; | |
844 | } | |
845 | case VIDIOC_TRY_FMT: | |
846 | { | |
847 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
848 | ||
849 | /* FIXME: Should be one dump per type */ | |
850 | dbgarg(cmd, "type=%s\n", prt_names(f->type, | |
851 | v4l2_type_names)); | |
852 | switch (f->type) { | |
853 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
7ecc0cf9 | 854 | CLEAR_AFTER_FIELD(f, fmt.pix); |
a399810c HV |
855 | if (ops->vidioc_try_fmt_vid_cap) |
856 | ret = ops->vidioc_try_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
857 | if (!ret) |
858 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
859 | break; | |
860 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
7ecc0cf9 | 861 | CLEAR_AFTER_FIELD(f, fmt.win); |
a399810c HV |
862 | if (ops->vidioc_try_fmt_vid_overlay) |
863 | ret = ops->vidioc_try_fmt_vid_overlay(file, | |
35ea11ff HV |
864 | fh, f); |
865 | break; | |
866 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
7ecc0cf9 | 867 | CLEAR_AFTER_FIELD(f, fmt.pix); |
a399810c HV |
868 | if (ops->vidioc_try_fmt_vid_out) |
869 | ret = ops->vidioc_try_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
870 | if (!ret) |
871 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
872 | break; | |
873 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
7ecc0cf9 | 874 | CLEAR_AFTER_FIELD(f, fmt.win); |
a399810c HV |
875 | if (ops->vidioc_try_fmt_vid_out_overlay) |
876 | ret = ops->vidioc_try_fmt_vid_out_overlay(file, | |
35ea11ff HV |
877 | fh, f); |
878 | break; | |
879 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
7ecc0cf9 | 880 | CLEAR_AFTER_FIELD(f, fmt.vbi); |
a399810c HV |
881 | if (ops->vidioc_try_fmt_vbi_cap) |
882 | ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
883 | break; |
884 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
7ecc0cf9 | 885 | CLEAR_AFTER_FIELD(f, fmt.vbi); |
a399810c HV |
886 | if (ops->vidioc_try_fmt_vbi_out) |
887 | ret = ops->vidioc_try_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
888 | break; |
889 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
7ecc0cf9 | 890 | CLEAR_AFTER_FIELD(f, fmt.sliced); |
a399810c HV |
891 | if (ops->vidioc_try_fmt_sliced_vbi_cap) |
892 | ret = ops->vidioc_try_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
893 | fh, f); |
894 | break; | |
895 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
7ecc0cf9 | 896 | CLEAR_AFTER_FIELD(f, fmt.sliced); |
a399810c HV |
897 | if (ops->vidioc_try_fmt_sliced_vbi_out) |
898 | ret = ops->vidioc_try_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
899 | fh, f); |
900 | break; | |
901 | case V4L2_BUF_TYPE_PRIVATE: | |
7ecc0cf9 | 902 | /* CLEAR_AFTER_FIELD(f, fmt.raw_data); <- does nothing */ |
a399810c HV |
903 | if (ops->vidioc_try_fmt_type_private) |
904 | ret = ops->vidioc_try_fmt_type_private(file, | |
35ea11ff HV |
905 | fh, f); |
906 | break; | |
907 | } | |
908 | ||
909 | break; | |
910 | } | |
911 | /* FIXME: Those buf reqs could be handled here, | |
912 | with some changes on videobuf to allow its header to be included at | |
913 | videodev2.h or being merged at videodev2. | |
914 | */ | |
915 | case VIDIOC_REQBUFS: | |
916 | { | |
917 | struct v4l2_requestbuffers *p = arg; | |
918 | ||
a399810c | 919 | if (!ops->vidioc_reqbufs) |
35ea11ff | 920 | break; |
a399810c | 921 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
922 | if (ret) |
923 | break; | |
924 | ||
7ecc0cf9 TP |
925 | if (p->type < V4L2_BUF_TYPE_PRIVATE) |
926 | CLEAR_AFTER_FIELD(p, memory); | |
927 | ||
a399810c | 928 | ret = ops->vidioc_reqbufs(file, fh, p); |
35ea11ff HV |
929 | dbgarg(cmd, "count=%d, type=%s, memory=%s\n", |
930 | p->count, | |
931 | prt_names(p->type, v4l2_type_names), | |
932 | prt_names(p->memory, v4l2_memory_names)); | |
933 | break; | |
934 | } | |
935 | case VIDIOC_QUERYBUF: | |
936 | { | |
937 | struct v4l2_buffer *p = arg; | |
938 | ||
a399810c | 939 | if (!ops->vidioc_querybuf) |
35ea11ff | 940 | break; |
a399810c | 941 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
942 | if (ret) |
943 | break; | |
944 | ||
a399810c | 945 | ret = ops->vidioc_querybuf(file, fh, p); |
35ea11ff HV |
946 | if (!ret) |
947 | dbgbuf(cmd, vfd, p); | |
948 | break; | |
949 | } | |
950 | case VIDIOC_QBUF: | |
951 | { | |
952 | struct v4l2_buffer *p = arg; | |
953 | ||
a399810c | 954 | if (!ops->vidioc_qbuf) |
35ea11ff | 955 | break; |
a399810c | 956 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
957 | if (ret) |
958 | break; | |
959 | ||
a399810c | 960 | ret = ops->vidioc_qbuf(file, fh, p); |
35ea11ff HV |
961 | if (!ret) |
962 | dbgbuf(cmd, vfd, p); | |
963 | break; | |
964 | } | |
965 | case VIDIOC_DQBUF: | |
966 | { | |
967 | struct v4l2_buffer *p = arg; | |
968 | ||
a399810c | 969 | if (!ops->vidioc_dqbuf) |
35ea11ff | 970 | break; |
a399810c | 971 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
972 | if (ret) |
973 | break; | |
974 | ||
a399810c | 975 | ret = ops->vidioc_dqbuf(file, fh, p); |
35ea11ff HV |
976 | if (!ret) |
977 | dbgbuf(cmd, vfd, p); | |
978 | break; | |
979 | } | |
980 | case VIDIOC_OVERLAY: | |
981 | { | |
982 | int *i = arg; | |
983 | ||
a399810c | 984 | if (!ops->vidioc_overlay) |
35ea11ff HV |
985 | break; |
986 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 987 | ret = ops->vidioc_overlay(file, fh, *i); |
35ea11ff HV |
988 | break; |
989 | } | |
990 | case VIDIOC_G_FBUF: | |
991 | { | |
992 | struct v4l2_framebuffer *p = arg; | |
993 | ||
a399810c | 994 | if (!ops->vidioc_g_fbuf) |
35ea11ff | 995 | break; |
a399810c | 996 | ret = ops->vidioc_g_fbuf(file, fh, arg); |
35ea11ff HV |
997 | if (!ret) { |
998 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
999 | p->capability, p->flags, | |
1000 | (unsigned long)p->base); | |
1001 | v4l_print_pix_fmt(vfd, &p->fmt); | |
1002 | } | |
1003 | break; | |
1004 | } | |
1005 | case VIDIOC_S_FBUF: | |
1006 | { | |
1007 | struct v4l2_framebuffer *p = arg; | |
1008 | ||
a399810c | 1009 | if (!ops->vidioc_s_fbuf) |
35ea11ff HV |
1010 | break; |
1011 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
1012 | p->capability, p->flags, (unsigned long)p->base); | |
1013 | v4l_print_pix_fmt(vfd, &p->fmt); | |
a399810c | 1014 | ret = ops->vidioc_s_fbuf(file, fh, arg); |
35ea11ff HV |
1015 | break; |
1016 | } | |
1017 | case VIDIOC_STREAMON: | |
1018 | { | |
1019 | enum v4l2_buf_type i = *(int *)arg; | |
1020 | ||
a399810c | 1021 | if (!ops->vidioc_streamon) |
35ea11ff HV |
1022 | break; |
1023 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 1024 | ret = ops->vidioc_streamon(file, fh, i); |
35ea11ff HV |
1025 | break; |
1026 | } | |
1027 | case VIDIOC_STREAMOFF: | |
1028 | { | |
1029 | enum v4l2_buf_type i = *(int *)arg; | |
1030 | ||
a399810c | 1031 | if (!ops->vidioc_streamoff) |
35ea11ff HV |
1032 | break; |
1033 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 1034 | ret = ops->vidioc_streamoff(file, fh, i); |
35ea11ff HV |
1035 | break; |
1036 | } | |
1037 | /* ---------- tv norms ---------- */ | |
1038 | case VIDIOC_ENUMSTD: | |
1039 | { | |
1040 | struct v4l2_standard *p = arg; | |
1041 | v4l2_std_id id = vfd->tvnorms, curr_id = 0; | |
1042 | unsigned int index = p->index, i, j = 0; | |
1043 | const char *descr = ""; | |
1044 | ||
1045 | /* Return norm array in a canonical way */ | |
1046 | for (i = 0; i <= index && id; i++) { | |
1047 | /* last std value in the standards array is 0, so this | |
1048 | while always ends there since (id & 0) == 0. */ | |
1049 | while ((id & standards[j].std) != standards[j].std) | |
1050 | j++; | |
1051 | curr_id = standards[j].std; | |
1052 | descr = standards[j].descr; | |
1053 | j++; | |
1054 | if (curr_id == 0) | |
1055 | break; | |
1056 | if (curr_id != V4L2_STD_PAL && | |
1057 | curr_id != V4L2_STD_SECAM && | |
1058 | curr_id != V4L2_STD_NTSC) | |
1059 | id &= ~curr_id; | |
1060 | } | |
1061 | if (i <= index) | |
1062 | return -EINVAL; | |
1063 | ||
1064 | v4l2_video_std_construct(p, curr_id, descr); | |
35ea11ff HV |
1065 | |
1066 | dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, " | |
1067 | "framelines=%d\n", p->index, | |
1068 | (unsigned long long)p->id, p->name, | |
1069 | p->frameperiod.numerator, | |
1070 | p->frameperiod.denominator, | |
1071 | p->framelines); | |
1072 | ||
1073 | ret = 0; | |
1074 | break; | |
1075 | } | |
1076 | case VIDIOC_G_STD: | |
1077 | { | |
1078 | v4l2_std_id *id = arg; | |
1079 | ||
1080 | ret = 0; | |
1081 | /* Calls the specific handler */ | |
a399810c HV |
1082 | if (ops->vidioc_g_std) |
1083 | ret = ops->vidioc_g_std(file, fh, id); | |
35ea11ff HV |
1084 | else |
1085 | *id = vfd->current_norm; | |
1086 | ||
1087 | if (!ret) | |
1088 | dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id); | |
1089 | break; | |
1090 | } | |
1091 | case VIDIOC_S_STD: | |
1092 | { | |
1093 | v4l2_std_id *id = arg, norm; | |
1094 | ||
1095 | dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id); | |
1096 | ||
1097 | norm = (*id) & vfd->tvnorms; | |
1098 | if (vfd->tvnorms && !norm) /* Check if std is supported */ | |
1099 | break; | |
1100 | ||
1101 | /* Calls the specific handler */ | |
a399810c HV |
1102 | if (ops->vidioc_s_std) |
1103 | ret = ops->vidioc_s_std(file, fh, &norm); | |
35ea11ff HV |
1104 | else |
1105 | ret = -EINVAL; | |
1106 | ||
1107 | /* Updates standard information */ | |
1108 | if (ret >= 0) | |
1109 | vfd->current_norm = norm; | |
1110 | break; | |
1111 | } | |
1112 | case VIDIOC_QUERYSTD: | |
1113 | { | |
1114 | v4l2_std_id *p = arg; | |
1115 | ||
a399810c | 1116 | if (!ops->vidioc_querystd) |
35ea11ff | 1117 | break; |
a399810c | 1118 | ret = ops->vidioc_querystd(file, fh, arg); |
35ea11ff HV |
1119 | if (!ret) |
1120 | dbgarg(cmd, "detected std=%08Lx\n", | |
1121 | (unsigned long long)*p); | |
1122 | break; | |
1123 | } | |
1124 | /* ------ input switching ---------- */ | |
1125 | /* FIXME: Inputs can be handled inside videodev2 */ | |
1126 | case VIDIOC_ENUMINPUT: | |
1127 | { | |
1128 | struct v4l2_input *p = arg; | |
35ea11ff | 1129 | |
a399810c | 1130 | if (!ops->vidioc_enum_input) |
35ea11ff | 1131 | break; |
35ea11ff | 1132 | |
a399810c | 1133 | ret = ops->vidioc_enum_input(file, fh, p); |
35ea11ff HV |
1134 | if (!ret) |
1135 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1136 | "audioset=%d, " | |
1137 | "tuner=%d, std=%08Lx, status=%d\n", | |
1138 | p->index, p->name, p->type, p->audioset, | |
1139 | p->tuner, | |
1140 | (unsigned long long)p->std, | |
1141 | p->status); | |
1142 | break; | |
1143 | } | |
1144 | case VIDIOC_G_INPUT: | |
1145 | { | |
1146 | unsigned int *i = arg; | |
1147 | ||
a399810c | 1148 | if (!ops->vidioc_g_input) |
35ea11ff | 1149 | break; |
a399810c | 1150 | ret = ops->vidioc_g_input(file, fh, i); |
35ea11ff HV |
1151 | if (!ret) |
1152 | dbgarg(cmd, "value=%d\n", *i); | |
1153 | break; | |
1154 | } | |
1155 | case VIDIOC_S_INPUT: | |
1156 | { | |
1157 | unsigned int *i = arg; | |
1158 | ||
a399810c | 1159 | if (!ops->vidioc_s_input) |
35ea11ff HV |
1160 | break; |
1161 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1162 | ret = ops->vidioc_s_input(file, fh, *i); |
35ea11ff HV |
1163 | break; |
1164 | } | |
1165 | ||
1166 | /* ------ output switching ---------- */ | |
1167 | case VIDIOC_ENUMOUTPUT: | |
1168 | { | |
1169 | struct v4l2_output *p = arg; | |
35ea11ff | 1170 | |
a399810c | 1171 | if (!ops->vidioc_enum_output) |
35ea11ff | 1172 | break; |
35ea11ff | 1173 | |
a399810c | 1174 | ret = ops->vidioc_enum_output(file, fh, p); |
35ea11ff HV |
1175 | if (!ret) |
1176 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1177 | "audioset=0x%x, " | |
1178 | "modulator=%d, std=0x%08Lx\n", | |
1179 | p->index, p->name, p->type, p->audioset, | |
1180 | p->modulator, (unsigned long long)p->std); | |
1181 | break; | |
1182 | } | |
1183 | case VIDIOC_G_OUTPUT: | |
1184 | { | |
1185 | unsigned int *i = arg; | |
1186 | ||
a399810c | 1187 | if (!ops->vidioc_g_output) |
35ea11ff | 1188 | break; |
a399810c | 1189 | ret = ops->vidioc_g_output(file, fh, i); |
35ea11ff HV |
1190 | if (!ret) |
1191 | dbgarg(cmd, "value=%d\n", *i); | |
1192 | break; | |
1193 | } | |
1194 | case VIDIOC_S_OUTPUT: | |
1195 | { | |
1196 | unsigned int *i = arg; | |
1197 | ||
a399810c | 1198 | if (!ops->vidioc_s_output) |
35ea11ff HV |
1199 | break; |
1200 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1201 | ret = ops->vidioc_s_output(file, fh, *i); |
35ea11ff HV |
1202 | break; |
1203 | } | |
1204 | ||
1205 | /* --- controls ---------------------------------------------- */ | |
1206 | case VIDIOC_QUERYCTRL: | |
1207 | { | |
1208 | struct v4l2_queryctrl *p = arg; | |
1209 | ||
a399810c | 1210 | if (!ops->vidioc_queryctrl) |
35ea11ff | 1211 | break; |
a399810c | 1212 | ret = ops->vidioc_queryctrl(file, fh, p); |
35ea11ff HV |
1213 | if (!ret) |
1214 | dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, " | |
1215 | "step=%d, default=%d, flags=0x%08x\n", | |
1216 | p->id, p->type, p->name, | |
1217 | p->minimum, p->maximum, | |
1218 | p->step, p->default_value, p->flags); | |
1219 | else | |
1220 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1221 | break; | |
1222 | } | |
1223 | case VIDIOC_G_CTRL: | |
1224 | { | |
1225 | struct v4l2_control *p = arg; | |
1226 | ||
a399810c HV |
1227 | if (ops->vidioc_g_ctrl) |
1228 | ret = ops->vidioc_g_ctrl(file, fh, p); | |
1229 | else if (ops->vidioc_g_ext_ctrls) { | |
35ea11ff HV |
1230 | struct v4l2_ext_controls ctrls; |
1231 | struct v4l2_ext_control ctrl; | |
1232 | ||
1233 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1234 | ctrls.count = 1; | |
1235 | ctrls.controls = &ctrl; | |
1236 | ctrl.id = p->id; | |
1237 | ctrl.value = p->value; | |
1238 | if (check_ext_ctrls(&ctrls, 1)) { | |
a399810c | 1239 | ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1240 | if (ret == 0) |
1241 | p->value = ctrl.value; | |
1242 | } | |
1243 | } else | |
1244 | break; | |
1245 | if (!ret) | |
1246 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1247 | else | |
1248 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1249 | break; | |
1250 | } | |
1251 | case VIDIOC_S_CTRL: | |
1252 | { | |
1253 | struct v4l2_control *p = arg; | |
1254 | struct v4l2_ext_controls ctrls; | |
1255 | struct v4l2_ext_control ctrl; | |
1256 | ||
a399810c | 1257 | if (!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1258 | break; |
1259 | ||
1260 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1261 | ||
a399810c HV |
1262 | if (ops->vidioc_s_ctrl) { |
1263 | ret = ops->vidioc_s_ctrl(file, fh, p); | |
35ea11ff HV |
1264 | break; |
1265 | } | |
a399810c | 1266 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1267 | break; |
1268 | ||
1269 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1270 | ctrls.count = 1; | |
1271 | ctrls.controls = &ctrl; | |
1272 | ctrl.id = p->id; | |
1273 | ctrl.value = p->value; | |
1274 | if (check_ext_ctrls(&ctrls, 1)) | |
a399810c | 1275 | ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1276 | break; |
1277 | } | |
1278 | case VIDIOC_G_EXT_CTRLS: | |
1279 | { | |
1280 | struct v4l2_ext_controls *p = arg; | |
1281 | ||
1282 | p->error_idx = p->count; | |
a399810c | 1283 | if (!ops->vidioc_g_ext_ctrls) |
35ea11ff HV |
1284 | break; |
1285 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1286 | ret = ops->vidioc_g_ext_ctrls(file, fh, p); |
35ea11ff HV |
1287 | v4l_print_ext_ctrls(cmd, vfd, p, !ret); |
1288 | break; | |
1289 | } | |
1290 | case VIDIOC_S_EXT_CTRLS: | |
1291 | { | |
1292 | struct v4l2_ext_controls *p = arg; | |
1293 | ||
1294 | p->error_idx = p->count; | |
a399810c | 1295 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1296 | break; |
1297 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1298 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1299 | ret = ops->vidioc_s_ext_ctrls(file, fh, p); |
35ea11ff HV |
1300 | break; |
1301 | } | |
1302 | case VIDIOC_TRY_EXT_CTRLS: | |
1303 | { | |
1304 | struct v4l2_ext_controls *p = arg; | |
1305 | ||
1306 | p->error_idx = p->count; | |
a399810c | 1307 | if (!ops->vidioc_try_ext_ctrls) |
35ea11ff HV |
1308 | break; |
1309 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1310 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1311 | ret = ops->vidioc_try_ext_ctrls(file, fh, p); |
35ea11ff HV |
1312 | break; |
1313 | } | |
1314 | case VIDIOC_QUERYMENU: | |
1315 | { | |
1316 | struct v4l2_querymenu *p = arg; | |
1317 | ||
a399810c | 1318 | if (!ops->vidioc_querymenu) |
35ea11ff | 1319 | break; |
a399810c | 1320 | ret = ops->vidioc_querymenu(file, fh, p); |
35ea11ff HV |
1321 | if (!ret) |
1322 | dbgarg(cmd, "id=0x%x, index=%d, name=%s\n", | |
1323 | p->id, p->index, p->name); | |
1324 | else | |
1325 | dbgarg(cmd, "id=0x%x, index=%d\n", | |
1326 | p->id, p->index); | |
1327 | break; | |
1328 | } | |
1329 | /* --- audio ---------------------------------------------- */ | |
1330 | case VIDIOC_ENUMAUDIO: | |
1331 | { | |
1332 | struct v4l2_audio *p = arg; | |
1333 | ||
a399810c | 1334 | if (!ops->vidioc_enumaudio) |
35ea11ff | 1335 | break; |
a399810c | 1336 | ret = ops->vidioc_enumaudio(file, fh, p); |
35ea11ff HV |
1337 | if (!ret) |
1338 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1339 | "mode=0x%x\n", p->index, p->name, | |
1340 | p->capability, p->mode); | |
1341 | else | |
1342 | dbgarg(cmd, "index=%d\n", p->index); | |
1343 | break; | |
1344 | } | |
1345 | case VIDIOC_G_AUDIO: | |
1346 | { | |
1347 | struct v4l2_audio *p = arg; | |
35ea11ff | 1348 | |
a399810c | 1349 | if (!ops->vidioc_g_audio) |
35ea11ff HV |
1350 | break; |
1351 | ||
a399810c | 1352 | ret = ops->vidioc_g_audio(file, fh, p); |
35ea11ff HV |
1353 | if (!ret) |
1354 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1355 | "mode=0x%x\n", p->index, | |
1356 | p->name, p->capability, p->mode); | |
1357 | else | |
1358 | dbgarg(cmd, "index=%d\n", p->index); | |
1359 | break; | |
1360 | } | |
1361 | case VIDIOC_S_AUDIO: | |
1362 | { | |
1363 | struct v4l2_audio *p = arg; | |
1364 | ||
a399810c | 1365 | if (!ops->vidioc_s_audio) |
35ea11ff HV |
1366 | break; |
1367 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1368 | "mode=0x%x\n", p->index, p->name, | |
1369 | p->capability, p->mode); | |
a399810c | 1370 | ret = ops->vidioc_s_audio(file, fh, p); |
35ea11ff HV |
1371 | break; |
1372 | } | |
1373 | case VIDIOC_ENUMAUDOUT: | |
1374 | { | |
1375 | struct v4l2_audioout *p = arg; | |
1376 | ||
a399810c | 1377 | if (!ops->vidioc_enumaudout) |
35ea11ff HV |
1378 | break; |
1379 | dbgarg(cmd, "Enum for index=%d\n", p->index); | |
a399810c | 1380 | ret = ops->vidioc_enumaudout(file, fh, p); |
35ea11ff HV |
1381 | if (!ret) |
1382 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1383 | "mode=%d\n", p->index, p->name, | |
1384 | p->capability, p->mode); | |
1385 | break; | |
1386 | } | |
1387 | case VIDIOC_G_AUDOUT: | |
1388 | { | |
1389 | struct v4l2_audioout *p = arg; | |
1390 | ||
a399810c | 1391 | if (!ops->vidioc_g_audout) |
35ea11ff | 1392 | break; |
337f9d20 | 1393 | |
a399810c | 1394 | ret = ops->vidioc_g_audout(file, fh, p); |
35ea11ff HV |
1395 | if (!ret) |
1396 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1397 | "mode=%d\n", p->index, p->name, | |
1398 | p->capability, p->mode); | |
1399 | break; | |
1400 | } | |
1401 | case VIDIOC_S_AUDOUT: | |
1402 | { | |
1403 | struct v4l2_audioout *p = arg; | |
1404 | ||
a399810c | 1405 | if (!ops->vidioc_s_audout) |
35ea11ff HV |
1406 | break; |
1407 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1408 | "mode=%d\n", p->index, p->name, | |
1409 | p->capability, p->mode); | |
1410 | ||
a399810c | 1411 | ret = ops->vidioc_s_audout(file, fh, p); |
35ea11ff HV |
1412 | break; |
1413 | } | |
1414 | case VIDIOC_G_MODULATOR: | |
1415 | { | |
1416 | struct v4l2_modulator *p = arg; | |
1417 | ||
a399810c | 1418 | if (!ops->vidioc_g_modulator) |
35ea11ff | 1419 | break; |
a399810c | 1420 | ret = ops->vidioc_g_modulator(file, fh, p); |
35ea11ff HV |
1421 | if (!ret) |
1422 | dbgarg(cmd, "index=%d, name=%s, " | |
1423 | "capability=%d, rangelow=%d," | |
1424 | " rangehigh=%d, txsubchans=%d\n", | |
1425 | p->index, p->name, p->capability, | |
1426 | p->rangelow, p->rangehigh, | |
1427 | p->txsubchans); | |
1428 | break; | |
1429 | } | |
1430 | case VIDIOC_S_MODULATOR: | |
1431 | { | |
1432 | struct v4l2_modulator *p = arg; | |
1433 | ||
a399810c | 1434 | if (!ops->vidioc_s_modulator) |
35ea11ff HV |
1435 | break; |
1436 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1437 | "rangelow=%d, rangehigh=%d, txsubchans=%d\n", | |
1438 | p->index, p->name, p->capability, p->rangelow, | |
1439 | p->rangehigh, p->txsubchans); | |
a399810c | 1440 | ret = ops->vidioc_s_modulator(file, fh, p); |
35ea11ff HV |
1441 | break; |
1442 | } | |
1443 | case VIDIOC_G_CROP: | |
1444 | { | |
1445 | struct v4l2_crop *p = arg; | |
1446 | ||
a399810c | 1447 | if (!ops->vidioc_g_crop) |
35ea11ff | 1448 | break; |
a56a18c3 | 1449 | |
35ea11ff | 1450 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1451 | ret = ops->vidioc_g_crop(file, fh, p); |
35ea11ff HV |
1452 | if (!ret) |
1453 | dbgrect(vfd, "", &p->c); | |
1454 | break; | |
1455 | } | |
1456 | case VIDIOC_S_CROP: | |
1457 | { | |
1458 | struct v4l2_crop *p = arg; | |
1459 | ||
a399810c | 1460 | if (!ops->vidioc_s_crop) |
35ea11ff HV |
1461 | break; |
1462 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
1463 | dbgrect(vfd, "", &p->c); | |
a399810c | 1464 | ret = ops->vidioc_s_crop(file, fh, p); |
35ea11ff HV |
1465 | break; |
1466 | } | |
1467 | case VIDIOC_CROPCAP: | |
1468 | { | |
1469 | struct v4l2_cropcap *p = arg; | |
1470 | ||
1471 | /*FIXME: Should also show v4l2_fract pixelaspect */ | |
a399810c | 1472 | if (!ops->vidioc_cropcap) |
35ea11ff | 1473 | break; |
a56a18c3 | 1474 | |
35ea11ff | 1475 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1476 | ret = ops->vidioc_cropcap(file, fh, p); |
35ea11ff HV |
1477 | if (!ret) { |
1478 | dbgrect(vfd, "bounds ", &p->bounds); | |
1479 | dbgrect(vfd, "defrect ", &p->defrect); | |
1480 | } | |
1481 | break; | |
1482 | } | |
1483 | case VIDIOC_G_JPEGCOMP: | |
1484 | { | |
1485 | struct v4l2_jpegcompression *p = arg; | |
1486 | ||
a399810c | 1487 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff | 1488 | break; |
a56a18c3 | 1489 | |
a399810c | 1490 | ret = ops->vidioc_g_jpegcomp(file, fh, p); |
35ea11ff HV |
1491 | if (!ret) |
1492 | dbgarg(cmd, "quality=%d, APPn=%d, " | |
1493 | "APP_len=%d, COM_len=%d, " | |
1494 | "jpeg_markers=%d\n", | |
1495 | p->quality, p->APPn, p->APP_len, | |
1496 | p->COM_len, p->jpeg_markers); | |
1497 | break; | |
1498 | } | |
1499 | case VIDIOC_S_JPEGCOMP: | |
1500 | { | |
1501 | struct v4l2_jpegcompression *p = arg; | |
1502 | ||
a399810c | 1503 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff HV |
1504 | break; |
1505 | dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, " | |
1506 | "COM_len=%d, jpeg_markers=%d\n", | |
1507 | p->quality, p->APPn, p->APP_len, | |
1508 | p->COM_len, p->jpeg_markers); | |
a399810c | 1509 | ret = ops->vidioc_s_jpegcomp(file, fh, p); |
35ea11ff HV |
1510 | break; |
1511 | } | |
1512 | case VIDIOC_G_ENC_INDEX: | |
1513 | { | |
1514 | struct v4l2_enc_idx *p = arg; | |
1515 | ||
a399810c | 1516 | if (!ops->vidioc_g_enc_index) |
35ea11ff | 1517 | break; |
a399810c | 1518 | ret = ops->vidioc_g_enc_index(file, fh, p); |
35ea11ff HV |
1519 | if (!ret) |
1520 | dbgarg(cmd, "entries=%d, entries_cap=%d\n", | |
1521 | p->entries, p->entries_cap); | |
1522 | break; | |
1523 | } | |
1524 | case VIDIOC_ENCODER_CMD: | |
1525 | { | |
1526 | struct v4l2_encoder_cmd *p = arg; | |
1527 | ||
a399810c | 1528 | if (!ops->vidioc_encoder_cmd) |
35ea11ff | 1529 | break; |
a399810c | 1530 | ret = ops->vidioc_encoder_cmd(file, fh, p); |
35ea11ff HV |
1531 | if (!ret) |
1532 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1533 | break; | |
1534 | } | |
1535 | case VIDIOC_TRY_ENCODER_CMD: | |
1536 | { | |
1537 | struct v4l2_encoder_cmd *p = arg; | |
1538 | ||
a399810c | 1539 | if (!ops->vidioc_try_encoder_cmd) |
35ea11ff | 1540 | break; |
a399810c | 1541 | ret = ops->vidioc_try_encoder_cmd(file, fh, p); |
35ea11ff HV |
1542 | if (!ret) |
1543 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1544 | break; | |
1545 | } | |
1546 | case VIDIOC_G_PARM: | |
1547 | { | |
1548 | struct v4l2_streamparm *p = arg; | |
35ea11ff | 1549 | |
a399810c | 1550 | if (ops->vidioc_g_parm) { |
34796bc0 TP |
1551 | ret = check_fmt(ops, p->type); |
1552 | if (ret) | |
1553 | break; | |
a399810c | 1554 | ret = ops->vidioc_g_parm(file, fh, p); |
35ea11ff | 1555 | } else { |
35ea11ff HV |
1556 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1557 | return -EINVAL; | |
1558 | ||
51f0b8d5 TP |
1559 | v4l2_video_std_frame_period(vfd->current_norm, |
1560 | &p->parm.capture.timeperframe); | |
35ea11ff HV |
1561 | ret = 0; |
1562 | } | |
1563 | ||
1564 | dbgarg(cmd, "type=%d\n", p->type); | |
1565 | break; | |
1566 | } | |
1567 | case VIDIOC_S_PARM: | |
1568 | { | |
1569 | struct v4l2_streamparm *p = arg; | |
1570 | ||
a399810c | 1571 | if (!ops->vidioc_s_parm) |
35ea11ff | 1572 | break; |
34796bc0 TP |
1573 | ret = check_fmt(ops, p->type); |
1574 | if (ret) | |
1575 | break; | |
1576 | ||
35ea11ff | 1577 | dbgarg(cmd, "type=%d\n", p->type); |
a399810c | 1578 | ret = ops->vidioc_s_parm(file, fh, p); |
35ea11ff HV |
1579 | break; |
1580 | } | |
1581 | case VIDIOC_G_TUNER: | |
1582 | { | |
1583 | struct v4l2_tuner *p = arg; | |
35ea11ff | 1584 | |
a399810c | 1585 | if (!ops->vidioc_g_tuner) |
35ea11ff HV |
1586 | break; |
1587 | ||
a399810c | 1588 | ret = ops->vidioc_g_tuner(file, fh, p); |
35ea11ff HV |
1589 | if (!ret) |
1590 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1591 | "capability=0x%x, rangelow=%d, " | |
1592 | "rangehigh=%d, signal=%d, afc=%d, " | |
1593 | "rxsubchans=0x%x, audmode=%d\n", | |
1594 | p->index, p->name, p->type, | |
1595 | p->capability, p->rangelow, | |
1596 | p->rangehigh, p->signal, p->afc, | |
1597 | p->rxsubchans, p->audmode); | |
1598 | break; | |
1599 | } | |
1600 | case VIDIOC_S_TUNER: | |
1601 | { | |
1602 | struct v4l2_tuner *p = arg; | |
1603 | ||
a399810c | 1604 | if (!ops->vidioc_s_tuner) |
35ea11ff HV |
1605 | break; |
1606 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1607 | "capability=0x%x, rangelow=%d, " | |
1608 | "rangehigh=%d, signal=%d, afc=%d, " | |
1609 | "rxsubchans=0x%x, audmode=%d\n", | |
1610 | p->index, p->name, p->type, | |
1611 | p->capability, p->rangelow, | |
1612 | p->rangehigh, p->signal, p->afc, | |
1613 | p->rxsubchans, p->audmode); | |
a399810c | 1614 | ret = ops->vidioc_s_tuner(file, fh, p); |
35ea11ff HV |
1615 | break; |
1616 | } | |
1617 | case VIDIOC_G_FREQUENCY: | |
1618 | { | |
1619 | struct v4l2_frequency *p = arg; | |
1620 | ||
a399810c | 1621 | if (!ops->vidioc_g_frequency) |
35ea11ff HV |
1622 | break; |
1623 | ||
a399810c | 1624 | ret = ops->vidioc_g_frequency(file, fh, p); |
35ea11ff HV |
1625 | if (!ret) |
1626 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1627 | p->tuner, p->type, p->frequency); | |
1628 | break; | |
1629 | } | |
1630 | case VIDIOC_S_FREQUENCY: | |
1631 | { | |
1632 | struct v4l2_frequency *p = arg; | |
1633 | ||
a399810c | 1634 | if (!ops->vidioc_s_frequency) |
35ea11ff HV |
1635 | break; |
1636 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1637 | p->tuner, p->type, p->frequency); | |
a399810c | 1638 | ret = ops->vidioc_s_frequency(file, fh, p); |
35ea11ff HV |
1639 | break; |
1640 | } | |
1641 | case VIDIOC_G_SLICED_VBI_CAP: | |
1642 | { | |
1643 | struct v4l2_sliced_vbi_cap *p = arg; | |
35ea11ff | 1644 | |
a399810c | 1645 | if (!ops->vidioc_g_sliced_vbi_cap) |
35ea11ff | 1646 | break; |
19c96e4b TP |
1647 | |
1648 | /* Clear up to type, everything after type is zerod already */ | |
1649 | memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); | |
1650 | ||
35ea11ff | 1651 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1652 | ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p); |
35ea11ff HV |
1653 | if (!ret) |
1654 | dbgarg2("service_set=%d\n", p->service_set); | |
1655 | break; | |
1656 | } | |
1657 | case VIDIOC_LOG_STATUS: | |
1658 | { | |
a399810c | 1659 | if (!ops->vidioc_log_status) |
35ea11ff | 1660 | break; |
a399810c | 1661 | ret = ops->vidioc_log_status(file, fh); |
35ea11ff HV |
1662 | break; |
1663 | } | |
1664 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1665 | case VIDIOC_DBG_G_REGISTER: | |
1666 | { | |
aecde8b5 | 1667 | struct v4l2_dbg_register *p = arg; |
35ea11ff HV |
1668 | |
1669 | if (!capable(CAP_SYS_ADMIN)) | |
1670 | ret = -EPERM; | |
a399810c HV |
1671 | else if (ops->vidioc_g_register) |
1672 | ret = ops->vidioc_g_register(file, fh, p); | |
35ea11ff HV |
1673 | break; |
1674 | } | |
1675 | case VIDIOC_DBG_S_REGISTER: | |
1676 | { | |
aecde8b5 | 1677 | struct v4l2_dbg_register *p = arg; |
35ea11ff HV |
1678 | |
1679 | if (!capable(CAP_SYS_ADMIN)) | |
1680 | ret = -EPERM; | |
a399810c HV |
1681 | else if (ops->vidioc_s_register) |
1682 | ret = ops->vidioc_s_register(file, fh, p); | |
35ea11ff HV |
1683 | break; |
1684 | } | |
1685 | #endif | |
aecde8b5 | 1686 | case VIDIOC_DBG_G_CHIP_IDENT: |
35ea11ff | 1687 | { |
aecde8b5 | 1688 | struct v4l2_dbg_chip_ident *p = arg; |
35ea11ff | 1689 | |
a399810c | 1690 | if (!ops->vidioc_g_chip_ident) |
35ea11ff | 1691 | break; |
80b36e0f HV |
1692 | p->ident = V4L2_IDENT_NONE; |
1693 | p->revision = 0; | |
a399810c | 1694 | ret = ops->vidioc_g_chip_ident(file, fh, p); |
35ea11ff HV |
1695 | if (!ret) |
1696 | dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision); | |
1697 | break; | |
1698 | } | |
35ea11ff HV |
1699 | case VIDIOC_S_HW_FREQ_SEEK: |
1700 | { | |
1701 | struct v4l2_hw_freq_seek *p = arg; | |
1702 | ||
a399810c | 1703 | if (!ops->vidioc_s_hw_freq_seek) |
35ea11ff HV |
1704 | break; |
1705 | dbgarg(cmd, | |
1706 | "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n", | |
1707 | p->tuner, p->type, p->seek_upward, p->wrap_around); | |
a399810c HV |
1708 | ret = ops->vidioc_s_hw_freq_seek(file, fh, p); |
1709 | break; | |
1710 | } | |
74d83fa0 MCC |
1711 | case VIDIOC_ENUM_FRAMESIZES: |
1712 | { | |
1713 | struct v4l2_frmsizeenum *p = arg; | |
1714 | ||
1715 | if (!ops->vidioc_enum_framesizes) | |
1716 | break; | |
1717 | ||
74d83fa0 MCC |
1718 | ret = ops->vidioc_enum_framesizes(file, fh, p); |
1719 | dbgarg(cmd, | |
1720 | "index=%d, pixelformat=%d, type=%d ", | |
1721 | p->index, p->pixel_format, p->type); | |
1722 | switch (p->type) { | |
1723 | case V4L2_FRMSIZE_TYPE_DISCRETE: | |
1724 | dbgarg2("width = %d, height=%d\n", | |
1725 | p->discrete.width, p->discrete.height); | |
1726 | break; | |
1727 | case V4L2_FRMSIZE_TYPE_STEPWISE: | |
1728 | dbgarg2("min %dx%d, max %dx%d, step %dx%d\n", | |
1729 | p->stepwise.min_width, p->stepwise.min_height, | |
1730 | p->stepwise.step_width, p->stepwise.step_height, | |
1731 | p->stepwise.max_width, p->stepwise.max_height); | |
1732 | break; | |
1733 | case V4L2_FRMSIZE_TYPE_CONTINUOUS: | |
1734 | dbgarg2("continuous\n"); | |
1735 | break; | |
1736 | default: | |
1737 | dbgarg2("- Unknown type!\n"); | |
1738 | } | |
1739 | ||
1740 | break; | |
1741 | } | |
1742 | case VIDIOC_ENUM_FRAMEINTERVALS: | |
1743 | { | |
1744 | struct v4l2_frmivalenum *p = arg; | |
1745 | ||
1746 | if (!ops->vidioc_enum_frameintervals) | |
1747 | break; | |
1748 | ||
74d83fa0 MCC |
1749 | ret = ops->vidioc_enum_frameintervals(file, fh, p); |
1750 | dbgarg(cmd, | |
1751 | "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ", | |
1752 | p->index, p->pixel_format, | |
1753 | p->width, p->height, p->type); | |
1754 | switch (p->type) { | |
1755 | case V4L2_FRMIVAL_TYPE_DISCRETE: | |
1756 | dbgarg2("fps=%d/%d\n", | |
1757 | p->discrete.numerator, | |
1758 | p->discrete.denominator); | |
1759 | break; | |
1760 | case V4L2_FRMIVAL_TYPE_STEPWISE: | |
1958578d MCC |
1761 | dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n", |
1762 | p->stepwise.min.numerator, | |
1763 | p->stepwise.min.denominator, | |
1764 | p->stepwise.max.numerator, | |
1765 | p->stepwise.max.denominator, | |
1766 | p->stepwise.step.numerator, | |
1767 | p->stepwise.step.denominator); | |
74d83fa0 MCC |
1768 | break; |
1769 | case V4L2_FRMIVAL_TYPE_CONTINUOUS: | |
1770 | dbgarg2("continuous\n"); | |
1771 | break; | |
1772 | default: | |
1773 | dbgarg2("- Unknown type!\n"); | |
1774 | } | |
1775 | break; | |
1776 | } | |
1777 | ||
a399810c HV |
1778 | default: |
1779 | { | |
1780 | if (!ops->vidioc_default) | |
1781 | break; | |
1782 | ret = ops->vidioc_default(file, fh, cmd, arg); | |
35ea11ff HV |
1783 | break; |
1784 | } | |
1785 | } /* switch */ | |
1786 | ||
1787 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { | |
1788 | if (ret < 0) { | |
1789 | v4l_print_ioctl(vfd->name, cmd); | |
069b7479 | 1790 | printk(KERN_CONT " error %ld\n", ret); |
35ea11ff HV |
1791 | } |
1792 | } | |
1793 | ||
1794 | return ret; | |
1795 | } | |
1796 | ||
19c96e4b TP |
1797 | /* In some cases, only a few fields are used as input, i.e. when the app sets |
1798 | * "index" and then the driver fills in the rest of the structure for the thing | |
1799 | * with that index. We only need to copy up the first non-input field. */ | |
1800 | static unsigned long cmd_input_size(unsigned int cmd) | |
1801 | { | |
1802 | /* Size of structure up to and including 'field' */ | |
9f1a693f HV |
1803 | #define CMDINSIZE(cmd, type, field) \ |
1804 | case VIDIOC_##cmd: \ | |
1805 | return offsetof(struct v4l2_##type, field) + \ | |
1806 | sizeof(((struct v4l2_##type *)0)->field); | |
19c96e4b | 1807 | |
9f1a693f | 1808 | switch (cmd) { |
19c96e4b TP |
1809 | CMDINSIZE(ENUM_FMT, fmtdesc, type); |
1810 | CMDINSIZE(G_FMT, format, type); | |
1811 | CMDINSIZE(QUERYBUF, buffer, type); | |
1812 | CMDINSIZE(G_PARM, streamparm, type); | |
1813 | CMDINSIZE(ENUMSTD, standard, index); | |
1814 | CMDINSIZE(ENUMINPUT, input, index); | |
1815 | CMDINSIZE(G_CTRL, control, id); | |
1816 | CMDINSIZE(G_TUNER, tuner, index); | |
1817 | CMDINSIZE(QUERYCTRL, queryctrl, id); | |
1818 | CMDINSIZE(QUERYMENU, querymenu, index); | |
1819 | CMDINSIZE(ENUMOUTPUT, output, index); | |
1820 | CMDINSIZE(G_MODULATOR, modulator, index); | |
1821 | CMDINSIZE(G_FREQUENCY, frequency, tuner); | |
1822 | CMDINSIZE(CROPCAP, cropcap, type); | |
1823 | CMDINSIZE(G_CROP, crop, type); | |
1824 | CMDINSIZE(ENUMAUDIO, audio, index); | |
1825 | CMDINSIZE(ENUMAUDOUT, audioout, index); | |
1826 | CMDINSIZE(ENCODER_CMD, encoder_cmd, flags); | |
1827 | CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags); | |
1828 | CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type); | |
1829 | CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format); | |
1830 | CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height); | |
1831 | default: | |
1832 | return _IOC_SIZE(cmd); | |
1833 | } | |
1834 | } | |
1835 | ||
069b7479 | 1836 | long video_ioctl2(struct file *file, |
35ea11ff HV |
1837 | unsigned int cmd, unsigned long arg) |
1838 | { | |
1839 | char sbuf[128]; | |
1840 | void *mbuf = NULL; | |
1841 | void *parg = NULL; | |
069b7479 | 1842 | long err = -EINVAL; |
35ea11ff HV |
1843 | int is_ext_ctrl; |
1844 | size_t ctrls_size = 0; | |
1845 | void __user *user_ptr = NULL; | |
1846 | ||
1847 | #ifdef __OLD_VIDIOC_ | |
1848 | cmd = video_fix_command(cmd); | |
1849 | #endif | |
1850 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
1851 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
1852 | ||
1853 | /* Copy arguments into temp kernel buffer */ | |
337f9d20 | 1854 | if (_IOC_DIR(cmd) != _IOC_NONE) { |
35ea11ff HV |
1855 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { |
1856 | parg = sbuf; | |
1857 | } else { | |
1858 | /* too big to allocate from stack */ | |
1859 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
1860 | if (NULL == mbuf) | |
1861 | return -ENOMEM; | |
1862 | parg = mbuf; | |
1863 | } | |
1864 | ||
1865 | err = -EFAULT; | |
19c96e4b TP |
1866 | if (_IOC_DIR(cmd) & _IOC_WRITE) { |
1867 | unsigned long n = cmd_input_size(cmd); | |
1868 | ||
1869 | if (copy_from_user(parg, (void __user *)arg, n)) | |
35ea11ff | 1870 | goto out; |
19c96e4b TP |
1871 | |
1872 | /* zero out anything we don't copy from userspace */ | |
1873 | if (n < _IOC_SIZE(cmd)) | |
1874 | memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); | |
337f9d20 TP |
1875 | } else { |
1876 | /* read-only ioctl */ | |
1877 | memset(parg, 0, _IOC_SIZE(cmd)); | |
19c96e4b | 1878 | } |
35ea11ff HV |
1879 | } |
1880 | ||
1881 | if (is_ext_ctrl) { | |
1882 | struct v4l2_ext_controls *p = parg; | |
1883 | ||
1884 | /* In case of an error, tell the caller that it wasn't | |
1885 | a specific control that caused it. */ | |
1886 | p->error_idx = p->count; | |
1887 | user_ptr = (void __user *)p->controls; | |
1888 | if (p->count) { | |
1889 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
1890 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
1891 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
1892 | err = -ENOMEM; | |
1893 | if (NULL == mbuf) | |
1894 | goto out_ext_ctrl; | |
1895 | err = -EFAULT; | |
1896 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
1897 | goto out_ext_ctrl; | |
1898 | p->controls = mbuf; | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | /* Handles IOCTL */ | |
b1f88407 | 1903 | err = __video_do_ioctl(file, cmd, parg); |
35ea11ff HV |
1904 | if (err == -ENOIOCTLCMD) |
1905 | err = -EINVAL; | |
1906 | if (is_ext_ctrl) { | |
1907 | struct v4l2_ext_controls *p = parg; | |
1908 | ||
1909 | p->controls = (void *)user_ptr; | |
1910 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
1911 | err = -EFAULT; | |
1912 | goto out_ext_ctrl; | |
1913 | } | |
1914 | if (err < 0) | |
1915 | goto out; | |
1916 | ||
1917 | out_ext_ctrl: | |
1918 | /* Copy results into user buffer */ | |
1919 | switch (_IOC_DIR(cmd)) { | |
1920 | case _IOC_READ: | |
1921 | case (_IOC_WRITE | _IOC_READ): | |
1922 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
1923 | err = -EFAULT; | |
1924 | break; | |
1925 | } | |
1926 | ||
1927 | out: | |
1928 | kfree(mbuf); | |
1929 | return err; | |
1930 | } | |
8a522c91 | 1931 | EXPORT_SYMBOL(video_ioctl2); |