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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 | * | |
11 | * Authors: Alan Cox, <alan@redhat.com> (version 1) | |
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> | |
27 | #include <linux/video_decoder.h> | |
28 | ||
29 | #define dbgarg(cmd, fmt, arg...) \ | |
30 | do { \ | |
31 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \ | |
32 | printk(KERN_DEBUG "%s: ", vfd->name); \ | |
33 | v4l_printk_ioctl(cmd); \ | |
34 | printk(" " fmt, ## arg); \ | |
35 | } \ | |
36 | } while (0) | |
37 | ||
38 | #define dbgarg2(fmt, arg...) \ | |
39 | do { \ | |
40 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \ | |
41 | printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\ | |
42 | } while (0) | |
43 | ||
44 | struct std_descr { | |
45 | v4l2_std_id std; | |
46 | const char *descr; | |
47 | }; | |
48 | ||
49 | static const struct std_descr standards[] = { | |
50 | { V4L2_STD_NTSC, "NTSC" }, | |
51 | { V4L2_STD_NTSC_M, "NTSC-M" }, | |
52 | { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, | |
53 | { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, | |
54 | { V4L2_STD_NTSC_443, "NTSC-443" }, | |
55 | { V4L2_STD_PAL, "PAL" }, | |
56 | { V4L2_STD_PAL_BG, "PAL-BG" }, | |
57 | { V4L2_STD_PAL_B, "PAL-B" }, | |
58 | { V4L2_STD_PAL_B1, "PAL-B1" }, | |
59 | { V4L2_STD_PAL_G, "PAL-G" }, | |
60 | { V4L2_STD_PAL_H, "PAL-H" }, | |
61 | { V4L2_STD_PAL_I, "PAL-I" }, | |
62 | { V4L2_STD_PAL_DK, "PAL-DK" }, | |
63 | { V4L2_STD_PAL_D, "PAL-D" }, | |
64 | { V4L2_STD_PAL_D1, "PAL-D1" }, | |
65 | { V4L2_STD_PAL_K, "PAL-K" }, | |
66 | { V4L2_STD_PAL_M, "PAL-M" }, | |
67 | { V4L2_STD_PAL_N, "PAL-N" }, | |
68 | { V4L2_STD_PAL_Nc, "PAL-Nc" }, | |
69 | { V4L2_STD_PAL_60, "PAL-60" }, | |
70 | { V4L2_STD_SECAM, "SECAM" }, | |
71 | { V4L2_STD_SECAM_B, "SECAM-B" }, | |
72 | { V4L2_STD_SECAM_G, "SECAM-G" }, | |
73 | { V4L2_STD_SECAM_H, "SECAM-H" }, | |
74 | { V4L2_STD_SECAM_DK, "SECAM-DK" }, | |
75 | { V4L2_STD_SECAM_D, "SECAM-D" }, | |
76 | { V4L2_STD_SECAM_K, "SECAM-K" }, | |
77 | { V4L2_STD_SECAM_K1, "SECAM-K1" }, | |
78 | { V4L2_STD_SECAM_L, "SECAM-L" }, | |
79 | { V4L2_STD_SECAM_LC, "SECAM-Lc" }, | |
80 | { 0, "Unknown" } | |
81 | }; | |
82 | ||
83 | /* video4linux standard ID conversion to standard name | |
84 | */ | |
85 | const char *v4l2_norm_to_name(v4l2_std_id id) | |
86 | { | |
87 | u32 myid = id; | |
88 | int i; | |
89 | ||
90 | /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle | |
91 | 64 bit comparations. So, on that architecture, with some gcc | |
92 | variants, compilation fails. Currently, the max value is 30bit wide. | |
93 | */ | |
94 | BUG_ON(myid != id); | |
95 | ||
96 | for (i = 0; standards[i].std; i++) | |
97 | if (myid == standards[i].std) | |
98 | break; | |
99 | return standards[i].descr; | |
100 | } | |
101 | EXPORT_SYMBOL(v4l2_norm_to_name); | |
102 | ||
103 | /* Fill in the fields of a v4l2_standard structure according to the | |
104 | 'id' and 'transmission' parameters. Returns negative on error. */ | |
105 | int v4l2_video_std_construct(struct v4l2_standard *vs, | |
106 | int id, const char *name) | |
107 | { | |
108 | u32 index = vs->index; | |
109 | ||
110 | memset(vs, 0, sizeof(struct v4l2_standard)); | |
111 | vs->index = index; | |
112 | vs->id = id; | |
113 | if (id & V4L2_STD_525_60) { | |
114 | vs->frameperiod.numerator = 1001; | |
115 | vs->frameperiod.denominator = 30000; | |
116 | vs->framelines = 525; | |
117 | } else { | |
118 | vs->frameperiod.numerator = 1; | |
119 | vs->frameperiod.denominator = 25; | |
120 | vs->framelines = 625; | |
121 | } | |
122 | strlcpy(vs->name, name, sizeof(vs->name)); | |
123 | return 0; | |
124 | } | |
125 | EXPORT_SYMBOL(v4l2_video_std_construct); | |
126 | ||
127 | /* ----------------------------------------------------------------- */ | |
128 | /* some arrays for pretty-printing debug messages of enum types */ | |
129 | ||
130 | const char *v4l2_field_names[] = { | |
131 | [V4L2_FIELD_ANY] = "any", | |
132 | [V4L2_FIELD_NONE] = "none", | |
133 | [V4L2_FIELD_TOP] = "top", | |
134 | [V4L2_FIELD_BOTTOM] = "bottom", | |
135 | [V4L2_FIELD_INTERLACED] = "interlaced", | |
136 | [V4L2_FIELD_SEQ_TB] = "seq-tb", | |
137 | [V4L2_FIELD_SEQ_BT] = "seq-bt", | |
138 | [V4L2_FIELD_ALTERNATE] = "alternate", | |
139 | [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", | |
140 | [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", | |
141 | }; | |
142 | EXPORT_SYMBOL(v4l2_field_names); | |
143 | ||
144 | const char *v4l2_type_names[] = { | |
145 | [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", | |
146 | [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", | |
147 | [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", | |
148 | [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", | |
149 | [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", | |
150 | [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", | |
151 | [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", | |
152 | [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", | |
153 | }; | |
154 | EXPORT_SYMBOL(v4l2_type_names); | |
155 | ||
156 | static const char *v4l2_memory_names[] = { | |
157 | [V4L2_MEMORY_MMAP] = "mmap", | |
158 | [V4L2_MEMORY_USERPTR] = "userptr", | |
159 | [V4L2_MEMORY_OVERLAY] = "overlay", | |
160 | }; | |
161 | ||
162 | #define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \ | |
163 | arr[a] : "unknown") | |
164 | ||
165 | /* ------------------------------------------------------------------ */ | |
166 | /* debug help functions */ | |
167 | ||
168 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
169 | static const char *v4l1_ioctls[] = { | |
170 | [_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP", | |
171 | [_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN", | |
172 | [_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN", | |
173 | [_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER", | |
174 | [_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER", | |
175 | [_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT", | |
176 | [_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT", | |
177 | [_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE", | |
178 | [_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN", | |
179 | [_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN", | |
180 | [_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF", | |
181 | [_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF", | |
182 | [_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY", | |
183 | [_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ", | |
184 | [_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ", | |
185 | [_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO", | |
186 | [_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO", | |
187 | [_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC", | |
188 | [_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE", | |
189 | [_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF", | |
190 | [_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT", | |
191 | [_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE", | |
192 | [_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE", | |
193 | [_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE", | |
194 | [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE", | |
195 | [_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO", | |
196 | [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE", | |
197 | [_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT", | |
198 | [_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT" | |
199 | }; | |
200 | #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls) | |
201 | #endif | |
202 | ||
203 | static const char *v4l2_ioctls[] = { | |
204 | [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", | |
205 | [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", | |
206 | [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", | |
207 | [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", | |
208 | [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", | |
209 | [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", | |
210 | [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", | |
211 | [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", | |
212 | [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", | |
213 | [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", | |
214 | [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", | |
215 | [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", | |
216 | [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", | |
217 | [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", | |
218 | [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", | |
219 | [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", | |
220 | [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", | |
221 | [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", | |
222 | [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", | |
223 | [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", | |
224 | [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", | |
225 | [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", | |
226 | [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", | |
227 | [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", | |
228 | [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", | |
229 | [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", | |
230 | [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", | |
231 | [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", | |
232 | [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", | |
233 | [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", | |
234 | [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", | |
235 | [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", | |
236 | [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", | |
237 | [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", | |
238 | [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", | |
239 | [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", | |
240 | [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", | |
241 | [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", | |
242 | [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", | |
243 | [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", | |
244 | [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", | |
245 | [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", | |
246 | [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", | |
247 | [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", | |
248 | [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", | |
249 | [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", | |
250 | [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO", | |
251 | [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT", | |
252 | [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY", | |
253 | [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY", | |
254 | [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", | |
255 | [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS", | |
256 | [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS", | |
257 | [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS", | |
258 | [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS", | |
259 | #if 1 | |
260 | [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES", | |
261 | [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS", | |
262 | [_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX", | |
263 | [_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD", | |
264 | [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD", | |
265 | ||
266 | [_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER", | |
267 | [_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER", | |
268 | ||
269 | [_IOC_NR(VIDIOC_G_CHIP_IDENT)] = "VIDIOC_G_CHIP_IDENT", | |
270 | [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK", | |
271 | #endif | |
272 | }; | |
273 | #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) | |
274 | ||
275 | static const char *v4l2_int_ioctls[] = { | |
276 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
277 | [_IOC_NR(DECODER_GET_CAPABILITIES)] = "DECODER_GET_CAPABILITIES", | |
278 | [_IOC_NR(DECODER_GET_STATUS)] = "DECODER_GET_STATUS", | |
279 | [_IOC_NR(DECODER_SET_NORM)] = "DECODER_SET_NORM", | |
280 | [_IOC_NR(DECODER_SET_INPUT)] = "DECODER_SET_INPUT", | |
281 | [_IOC_NR(DECODER_SET_OUTPUT)] = "DECODER_SET_OUTPUT", | |
282 | [_IOC_NR(DECODER_ENABLE_OUTPUT)] = "DECODER_ENABLE_OUTPUT", | |
283 | [_IOC_NR(DECODER_SET_PICTURE)] = "DECODER_SET_PICTURE", | |
284 | [_IOC_NR(DECODER_SET_GPIO)] = "DECODER_SET_GPIO", | |
285 | [_IOC_NR(DECODER_INIT)] = "DECODER_INIT", | |
286 | [_IOC_NR(DECODER_SET_VBI_BYPASS)] = "DECODER_SET_VBI_BYPASS", | |
287 | [_IOC_NR(DECODER_DUMP)] = "DECODER_DUMP", | |
288 | #endif | |
289 | [_IOC_NR(AUDC_SET_RADIO)] = "AUDC_SET_RADIO", | |
290 | ||
291 | [_IOC_NR(TUNER_SET_TYPE_ADDR)] = "TUNER_SET_TYPE_ADDR", | |
292 | [_IOC_NR(TUNER_SET_STANDBY)] = "TUNER_SET_STANDBY", | |
293 | [_IOC_NR(TUNER_SET_CONFIG)] = "TUNER_SET_CONFIG", | |
294 | ||
295 | [_IOC_NR(VIDIOC_INT_S_TUNER_MODE)] = "VIDIOC_INT_S_TUNER_MODE", | |
296 | [_IOC_NR(VIDIOC_INT_RESET)] = "VIDIOC_INT_RESET", | |
297 | [_IOC_NR(VIDIOC_INT_AUDIO_CLOCK_FREQ)] = "VIDIOC_INT_AUDIO_CLOCK_FREQ", | |
298 | [_IOC_NR(VIDIOC_INT_DECODE_VBI_LINE)] = "VIDIOC_INT_DECODE_VBI_LINE", | |
299 | [_IOC_NR(VIDIOC_INT_S_VBI_DATA)] = "VIDIOC_INT_S_VBI_DATA", | |
300 | [_IOC_NR(VIDIOC_INT_G_VBI_DATA)] = "VIDIOC_INT_G_VBI_DATA", | |
301 | [_IOC_NR(VIDIOC_INT_I2S_CLOCK_FREQ)] = "VIDIOC_INT_I2S_CLOCK_FREQ", | |
302 | [_IOC_NR(VIDIOC_INT_S_STANDBY)] = "VIDIOC_INT_S_STANDBY", | |
303 | [_IOC_NR(VIDIOC_INT_S_AUDIO_ROUTING)] = "VIDIOC_INT_S_AUDIO_ROUTING", | |
304 | [_IOC_NR(VIDIOC_INT_G_AUDIO_ROUTING)] = "VIDIOC_INT_G_AUDIO_ROUTING", | |
305 | [_IOC_NR(VIDIOC_INT_S_VIDEO_ROUTING)] = "VIDIOC_INT_S_VIDEO_ROUTING", | |
306 | [_IOC_NR(VIDIOC_INT_G_VIDEO_ROUTING)] = "VIDIOC_INT_G_VIDEO_ROUTING", | |
307 | [_IOC_NR(VIDIOC_INT_S_CRYSTAL_FREQ)] = "VIDIOC_INT_S_CRYSTAL_FREQ", | |
308 | [_IOC_NR(VIDIOC_INT_INIT)] = "VIDIOC_INT_INIT", | |
309 | [_IOC_NR(VIDIOC_INT_G_STD_OUTPUT)] = "VIDIOC_INT_G_STD_OUTPUT", | |
310 | [_IOC_NR(VIDIOC_INT_S_STD_OUTPUT)] = "VIDIOC_INT_S_STD_OUTPUT", | |
311 | }; | |
312 | #define V4L2_INT_IOCTLS ARRAY_SIZE(v4l2_int_ioctls) | |
313 | ||
314 | /* Common ioctl debug function. This function can be used by | |
315 | external ioctl messages as well as internal V4L ioctl */ | |
316 | void v4l_printk_ioctl(unsigned int cmd) | |
317 | { | |
318 | char *dir, *type; | |
319 | ||
320 | switch (_IOC_TYPE(cmd)) { | |
321 | case 'd': | |
322 | if (_IOC_NR(cmd) >= V4L2_INT_IOCTLS) { | |
323 | type = "v4l2_int"; | |
324 | break; | |
325 | } | |
326 | printk("%s", v4l2_int_ioctls[_IOC_NR(cmd)]); | |
327 | return; | |
328 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
329 | case 'v': | |
330 | if (_IOC_NR(cmd) >= V4L1_IOCTLS) { | |
331 | type = "v4l1"; | |
332 | break; | |
333 | } | |
334 | printk("%s", v4l1_ioctls[_IOC_NR(cmd)]); | |
335 | return; | |
336 | #endif | |
337 | case 'V': | |
338 | if (_IOC_NR(cmd) >= V4L2_IOCTLS) { | |
339 | type = "v4l2"; | |
340 | break; | |
341 | } | |
342 | printk("%s", v4l2_ioctls[_IOC_NR(cmd)]); | |
343 | return; | |
344 | default: | |
345 | type = "unknown"; | |
346 | } | |
347 | ||
348 | switch (_IOC_DIR(cmd)) { | |
349 | case _IOC_NONE: dir = "--"; break; | |
350 | case _IOC_READ: dir = "r-"; break; | |
351 | case _IOC_WRITE: dir = "-w"; break; | |
352 | case _IOC_READ | _IOC_WRITE: dir = "rw"; break; | |
353 | default: dir = "*ERR*"; break; | |
354 | } | |
355 | printk("%s ioctl '%c', dir=%s, #%d (0x%08x)", | |
356 | type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); | |
357 | } | |
358 | EXPORT_SYMBOL(v4l_printk_ioctl); | |
359 | ||
360 | /* | |
361 | * helper function -- handles userspace copying for ioctl arguments | |
362 | */ | |
363 | ||
364 | #ifdef __OLD_VIDIOC_ | |
365 | static unsigned int | |
366 | video_fix_command(unsigned int cmd) | |
367 | { | |
368 | switch (cmd) { | |
369 | case VIDIOC_OVERLAY_OLD: | |
370 | cmd = VIDIOC_OVERLAY; | |
371 | break; | |
372 | case VIDIOC_S_PARM_OLD: | |
373 | cmd = VIDIOC_S_PARM; | |
374 | break; | |
375 | case VIDIOC_S_CTRL_OLD: | |
376 | cmd = VIDIOC_S_CTRL; | |
377 | break; | |
378 | case VIDIOC_G_AUDIO_OLD: | |
379 | cmd = VIDIOC_G_AUDIO; | |
380 | break; | |
381 | case VIDIOC_G_AUDOUT_OLD: | |
382 | cmd = VIDIOC_G_AUDOUT; | |
383 | break; | |
384 | case VIDIOC_CROPCAP_OLD: | |
385 | cmd = VIDIOC_CROPCAP; | |
386 | break; | |
387 | } | |
388 | return cmd; | |
389 | } | |
390 | #endif | |
391 | ||
392 | /* | |
393 | * Obsolete usercopy function - Should be removed soon | |
394 | */ | |
395 | int | |
396 | video_usercopy(struct inode *inode, struct file *file, | |
397 | unsigned int cmd, unsigned long arg, | |
398 | int (*func)(struct inode *inode, struct file *file, | |
399 | unsigned int cmd, void *arg)) | |
400 | { | |
401 | char sbuf[128]; | |
402 | void *mbuf = NULL; | |
403 | void *parg = NULL; | |
404 | int err = -EINVAL; | |
405 | int is_ext_ctrl; | |
406 | size_t ctrls_size = 0; | |
407 | void __user *user_ptr = NULL; | |
408 | ||
409 | #ifdef __OLD_VIDIOC_ | |
410 | cmd = video_fix_command(cmd); | |
411 | #endif | |
412 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
413 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
414 | ||
415 | /* Copy arguments into temp kernel buffer */ | |
416 | switch (_IOC_DIR(cmd)) { | |
417 | case _IOC_NONE: | |
418 | parg = NULL; | |
419 | break; | |
420 | case _IOC_READ: | |
421 | case _IOC_WRITE: | |
422 | case (_IOC_WRITE | _IOC_READ): | |
423 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { | |
424 | parg = sbuf; | |
425 | } else { | |
426 | /* too big to allocate from stack */ | |
427 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
428 | if (NULL == mbuf) | |
429 | return -ENOMEM; | |
430 | parg = mbuf; | |
431 | } | |
432 | ||
433 | err = -EFAULT; | |
434 | if (_IOC_DIR(cmd) & _IOC_WRITE) | |
435 | if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) | |
436 | goto out; | |
437 | break; | |
438 | } | |
439 | if (is_ext_ctrl) { | |
440 | struct v4l2_ext_controls *p = parg; | |
441 | ||
442 | /* In case of an error, tell the caller that it wasn't | |
443 | a specific control that caused it. */ | |
444 | p->error_idx = p->count; | |
445 | user_ptr = (void __user *)p->controls; | |
446 | if (p->count) { | |
447 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
448 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
449 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
450 | err = -ENOMEM; | |
451 | if (NULL == mbuf) | |
452 | goto out_ext_ctrl; | |
453 | err = -EFAULT; | |
454 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
455 | goto out_ext_ctrl; | |
456 | p->controls = mbuf; | |
457 | } | |
458 | } | |
459 | ||
460 | /* call driver */ | |
461 | err = func(inode, file, cmd, parg); | |
462 | if (err == -ENOIOCTLCMD) | |
463 | err = -EINVAL; | |
464 | if (is_ext_ctrl) { | |
465 | struct v4l2_ext_controls *p = parg; | |
466 | ||
467 | p->controls = (void *)user_ptr; | |
468 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
469 | err = -EFAULT; | |
470 | goto out_ext_ctrl; | |
471 | } | |
472 | if (err < 0) | |
473 | goto out; | |
474 | ||
475 | out_ext_ctrl: | |
476 | /* Copy results into user buffer */ | |
477 | switch (_IOC_DIR(cmd)) { | |
478 | case _IOC_READ: | |
479 | case (_IOC_WRITE | _IOC_READ): | |
480 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
481 | err = -EFAULT; | |
482 | break; | |
483 | } | |
484 | ||
485 | out: | |
486 | kfree(mbuf); | |
487 | return err; | |
488 | } | |
489 | EXPORT_SYMBOL(video_usercopy); | |
490 | ||
491 | static void dbgbuf(unsigned int cmd, struct video_device *vfd, | |
492 | struct v4l2_buffer *p) | |
493 | { | |
494 | struct v4l2_timecode *tc = &p->timecode; | |
495 | ||
496 | dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, " | |
497 | "bytesused=%d, flags=0x%08d, " | |
498 | "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n", | |
499 | p->timestamp.tv_sec / 3600, | |
500 | (int)(p->timestamp.tv_sec / 60) % 60, | |
501 | (int)(p->timestamp.tv_sec % 60), | |
b045979d | 502 | (long)p->timestamp.tv_usec, |
35ea11ff HV |
503 | p->index, |
504 | prt_names(p->type, v4l2_type_names), | |
505 | p->bytesused, p->flags, | |
506 | p->field, p->sequence, | |
507 | prt_names(p->memory, v4l2_memory_names), | |
508 | p->m.userptr, p->length); | |
509 | dbgarg2("timecode=%02d:%02d:%02d type=%d, " | |
510 | "flags=0x%08d, frames=%d, userbits=0x%08x\n", | |
511 | tc->hours, tc->minutes, tc->seconds, | |
512 | tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); | |
513 | } | |
514 | ||
515 | static inline void dbgrect(struct video_device *vfd, char *s, | |
516 | struct v4l2_rect *r) | |
517 | { | |
518 | dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top, | |
519 | r->width, r->height); | |
520 | }; | |
521 | ||
522 | static inline void v4l_print_pix_fmt(struct video_device *vfd, | |
523 | struct v4l2_pix_format *fmt) | |
524 | { | |
525 | dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, " | |
526 | "bytesperline=%d sizeimage=%d, colorspace=%d\n", | |
527 | fmt->width, fmt->height, | |
528 | (fmt->pixelformat & 0xff), | |
529 | (fmt->pixelformat >> 8) & 0xff, | |
530 | (fmt->pixelformat >> 16) & 0xff, | |
531 | (fmt->pixelformat >> 24) & 0xff, | |
532 | prt_names(fmt->field, v4l2_field_names), | |
533 | fmt->bytesperline, fmt->sizeimage, fmt->colorspace); | |
534 | }; | |
535 | ||
536 | static inline void v4l_print_ext_ctrls(unsigned int cmd, | |
537 | struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals) | |
538 | { | |
539 | __u32 i; | |
540 | ||
541 | if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) | |
542 | return; | |
543 | dbgarg(cmd, ""); | |
544 | printk(KERN_CONT "class=0x%x", c->ctrl_class); | |
545 | for (i = 0; i < c->count; i++) { | |
546 | if (show_vals) | |
547 | printk(KERN_CONT " id/val=0x%x/0x%x", | |
548 | c->controls[i].id, c->controls[i].value); | |
549 | else | |
550 | printk(KERN_CONT " id=0x%x", c->controls[i].id); | |
551 | } | |
552 | printk(KERN_CONT "\n"); | |
553 | }; | |
554 | ||
555 | static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) | |
556 | { | |
557 | __u32 i; | |
558 | ||
559 | /* zero the reserved fields */ | |
560 | c->reserved[0] = c->reserved[1] = 0; | |
561 | for (i = 0; i < c->count; i++) { | |
562 | c->controls[i].reserved2[0] = 0; | |
563 | c->controls[i].reserved2[1] = 0; | |
564 | } | |
565 | /* V4L2_CID_PRIVATE_BASE cannot be used as control class | |
566 | when using extended controls. | |
567 | Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL | |
568 | is it allowed for backwards compatibility. | |
569 | */ | |
570 | if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) | |
571 | return 0; | |
572 | /* Check that all controls are from the same control class. */ | |
573 | for (i = 0; i < c->count; i++) { | |
574 | if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { | |
575 | c->error_idx = i; | |
576 | return 0; | |
577 | } | |
578 | } | |
579 | return 1; | |
580 | } | |
581 | ||
a399810c | 582 | static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type) |
35ea11ff | 583 | { |
a399810c HV |
584 | if (ops == NULL) |
585 | return -EINVAL; | |
586 | ||
35ea11ff HV |
587 | switch (type) { |
588 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c | 589 | if (ops->vidioc_try_fmt_vid_cap) |
35ea11ff HV |
590 | return 0; |
591 | break; | |
592 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c | 593 | if (ops->vidioc_try_fmt_vid_overlay) |
35ea11ff HV |
594 | return 0; |
595 | break; | |
596 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c | 597 | if (ops->vidioc_try_fmt_vid_out) |
35ea11ff HV |
598 | return 0; |
599 | break; | |
600 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c | 601 | if (ops->vidioc_try_fmt_vid_out_overlay) |
35ea11ff HV |
602 | return 0; |
603 | break; | |
604 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c | 605 | if (ops->vidioc_try_fmt_vbi_cap) |
35ea11ff HV |
606 | return 0; |
607 | break; | |
608 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c | 609 | if (ops->vidioc_try_fmt_vbi_out) |
35ea11ff HV |
610 | return 0; |
611 | break; | |
612 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c | 613 | if (ops->vidioc_try_fmt_sliced_vbi_cap) |
35ea11ff HV |
614 | return 0; |
615 | break; | |
616 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c | 617 | if (ops->vidioc_try_fmt_sliced_vbi_out) |
35ea11ff HV |
618 | return 0; |
619 | break; | |
620 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c | 621 | if (ops->vidioc_try_fmt_type_private) |
35ea11ff HV |
622 | return 0; |
623 | break; | |
624 | } | |
625 | return -EINVAL; | |
626 | } | |
627 | ||
628 | static int __video_do_ioctl(struct inode *inode, struct file *file, | |
629 | unsigned int cmd, void *arg) | |
630 | { | |
631 | struct video_device *vfd = video_devdata(file); | |
a399810c | 632 | const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; |
35ea11ff HV |
633 | void *fh = file->private_data; |
634 | int ret = -EINVAL; | |
635 | ||
636 | if ((vfd->debug & V4L2_DEBUG_IOCTL) && | |
637 | !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) { | |
638 | v4l_print_ioctl(vfd->name, cmd); | |
639 | printk(KERN_CONT "\n"); | |
640 | } | |
641 | ||
a399810c HV |
642 | if (ops == NULL) { |
643 | printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n", | |
644 | vfd->name); | |
645 | return -EINVAL; | |
646 | } | |
647 | ||
35ea11ff HV |
648 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
649 | /*********************************************************** | |
650 | Handles calls to the obsoleted V4L1 API | |
651 | Due to the nature of VIDIOCGMBUF, each driver that supports | |
652 | V4L1 should implement its own handler for this ioctl. | |
653 | ***********************************************************/ | |
654 | ||
655 | /* --- streaming capture ------------------------------------- */ | |
656 | if (cmd == VIDIOCGMBUF) { | |
657 | struct video_mbuf *p = arg; | |
658 | ||
659 | memset(p, 0, sizeof(*p)); | |
660 | ||
a399810c | 661 | if (!ops->vidiocgmbuf) |
35ea11ff | 662 | return ret; |
a399810c | 663 | ret = ops->vidiocgmbuf(file, fh, p); |
35ea11ff HV |
664 | if (!ret) |
665 | dbgarg(cmd, "size=%d, frames=%d, offsets=0x%08lx\n", | |
666 | p->size, p->frames, | |
667 | (unsigned long)p->offsets); | |
668 | return ret; | |
669 | } | |
670 | ||
671 | /******************************************************** | |
672 | All other V4L1 calls are handled by v4l1_compat module. | |
673 | Those calls will be translated into V4L2 calls, and | |
674 | __video_do_ioctl will be called again, with one or more | |
675 | V4L2 ioctls. | |
676 | ********************************************************/ | |
888fe747 | 677 | if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE) |
35ea11ff HV |
678 | return v4l_compat_translate_ioctl(inode, file, cmd, arg, |
679 | __video_do_ioctl); | |
680 | #endif | |
681 | ||
682 | switch (cmd) { | |
683 | /* --- capabilities ------------------------------------------ */ | |
684 | case VIDIOC_QUERYCAP: | |
685 | { | |
686 | struct v4l2_capability *cap = (struct v4l2_capability *)arg; | |
687 | memset(cap, 0, sizeof(*cap)); | |
688 | ||
a399810c | 689 | if (!ops->vidioc_querycap) |
35ea11ff HV |
690 | break; |
691 | ||
a399810c | 692 | ret = ops->vidioc_querycap(file, fh, cap); |
35ea11ff HV |
693 | if (!ret) |
694 | dbgarg(cmd, "driver=%s, card=%s, bus=%s, " | |
695 | "version=0x%08x, " | |
696 | "capabilities=0x%08x\n", | |
697 | cap->driver, cap->card, cap->bus_info, | |
698 | cap->version, | |
699 | cap->capabilities); | |
700 | break; | |
701 | } | |
702 | ||
703 | /* --- priority ------------------------------------------ */ | |
704 | case VIDIOC_G_PRIORITY: | |
705 | { | |
706 | enum v4l2_priority *p = arg; | |
707 | ||
a399810c | 708 | if (!ops->vidioc_g_priority) |
35ea11ff | 709 | break; |
a399810c | 710 | ret = ops->vidioc_g_priority(file, fh, p); |
35ea11ff HV |
711 | if (!ret) |
712 | dbgarg(cmd, "priority is %d\n", *p); | |
713 | break; | |
714 | } | |
715 | case VIDIOC_S_PRIORITY: | |
716 | { | |
717 | enum v4l2_priority *p = arg; | |
718 | ||
a399810c | 719 | if (!ops->vidioc_s_priority) |
35ea11ff HV |
720 | break; |
721 | dbgarg(cmd, "setting priority to %d\n", *p); | |
a399810c | 722 | ret = ops->vidioc_s_priority(file, fh, *p); |
35ea11ff HV |
723 | break; |
724 | } | |
725 | ||
726 | /* --- capture ioctls ---------------------------------------- */ | |
727 | case VIDIOC_ENUM_FMT: | |
728 | { | |
729 | struct v4l2_fmtdesc *f = arg; | |
730 | enum v4l2_buf_type type; | |
731 | unsigned int index; | |
732 | ||
733 | index = f->index; | |
734 | type = f->type; | |
735 | memset(f, 0, sizeof(*f)); | |
736 | f->index = index; | |
737 | f->type = type; | |
738 | ||
739 | switch (type) { | |
740 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
741 | if (ops->vidioc_enum_fmt_vid_cap) |
742 | ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
743 | break; |
744 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
745 | if (ops->vidioc_enum_fmt_vid_overlay) |
746 | ret = ops->vidioc_enum_fmt_vid_overlay(file, | |
35ea11ff HV |
747 | fh, f); |
748 | break; | |
35ea11ff | 749 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
a399810c HV |
750 | if (ops->vidioc_enum_fmt_vid_out) |
751 | ret = ops->vidioc_enum_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
752 | break; |
753 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
754 | if (ops->vidioc_enum_fmt_type_private) |
755 | ret = ops->vidioc_enum_fmt_type_private(file, | |
35ea11ff HV |
756 | fh, f); |
757 | break; | |
758 | default: | |
759 | break; | |
760 | } | |
761 | if (!ret) | |
762 | dbgarg(cmd, "index=%d, type=%d, flags=%d, " | |
763 | "pixelformat=%c%c%c%c, description='%s'\n", | |
764 | f->index, f->type, f->flags, | |
765 | (f->pixelformat & 0xff), | |
766 | (f->pixelformat >> 8) & 0xff, | |
767 | (f->pixelformat >> 16) & 0xff, | |
768 | (f->pixelformat >> 24) & 0xff, | |
769 | f->description); | |
770 | break; | |
771 | } | |
772 | case VIDIOC_G_FMT: | |
773 | { | |
774 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
775 | ||
776 | memset(f->fmt.raw_data, 0, sizeof(f->fmt.raw_data)); | |
777 | ||
778 | /* FIXME: Should be one dump per type */ | |
779 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
780 | ||
781 | switch (f->type) { | |
782 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
783 | if (ops->vidioc_g_fmt_vid_cap) |
784 | ret = ops->vidioc_g_fmt_vid_cap(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_OVERLAY: | |
a399810c HV |
789 | if (ops->vidioc_g_fmt_vid_overlay) |
790 | ret = ops->vidioc_g_fmt_vid_overlay(file, | |
35ea11ff HV |
791 | fh, f); |
792 | break; | |
793 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c HV |
794 | if (ops->vidioc_g_fmt_vid_out) |
795 | ret = ops->vidioc_g_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
796 | if (!ret) |
797 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
798 | break; | |
799 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
800 | if (ops->vidioc_g_fmt_vid_out_overlay) |
801 | ret = ops->vidioc_g_fmt_vid_out_overlay(file, | |
35ea11ff HV |
802 | fh, f); |
803 | break; | |
804 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
805 | if (ops->vidioc_g_fmt_vbi_cap) |
806 | ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
807 | break; |
808 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
809 | if (ops->vidioc_g_fmt_vbi_out) |
810 | ret = ops->vidioc_g_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
811 | break; |
812 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
813 | if (ops->vidioc_g_fmt_sliced_vbi_cap) |
814 | ret = ops->vidioc_g_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
815 | fh, f); |
816 | break; | |
817 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
818 | if (ops->vidioc_g_fmt_sliced_vbi_out) |
819 | ret = ops->vidioc_g_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
820 | fh, f); |
821 | break; | |
822 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
823 | if (ops->vidioc_g_fmt_type_private) |
824 | ret = ops->vidioc_g_fmt_type_private(file, | |
35ea11ff HV |
825 | fh, f); |
826 | break; | |
827 | } | |
828 | ||
829 | break; | |
830 | } | |
831 | case VIDIOC_S_FMT: | |
832 | { | |
833 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
834 | ||
835 | /* FIXME: Should be one dump per type */ | |
836 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
837 | ||
838 | switch (f->type) { | |
839 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
840 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
a399810c HV |
841 | if (ops->vidioc_s_fmt_vid_cap) |
842 | ret = ops->vidioc_s_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
843 | break; |
844 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
845 | if (ops->vidioc_s_fmt_vid_overlay) |
846 | ret = ops->vidioc_s_fmt_vid_overlay(file, | |
35ea11ff HV |
847 | fh, f); |
848 | break; | |
849 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
850 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
a399810c HV |
851 | if (ops->vidioc_s_fmt_vid_out) |
852 | ret = ops->vidioc_s_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
853 | break; |
854 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
855 | if (ops->vidioc_s_fmt_vid_out_overlay) |
856 | ret = ops->vidioc_s_fmt_vid_out_overlay(file, | |
35ea11ff HV |
857 | fh, f); |
858 | break; | |
859 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
860 | if (ops->vidioc_s_fmt_vbi_cap) |
861 | ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
862 | break; |
863 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
864 | if (ops->vidioc_s_fmt_vbi_out) |
865 | ret = ops->vidioc_s_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
866 | break; |
867 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
868 | if (ops->vidioc_s_fmt_sliced_vbi_cap) |
869 | ret = ops->vidioc_s_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
870 | fh, f); |
871 | break; | |
872 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
873 | if (ops->vidioc_s_fmt_sliced_vbi_out) |
874 | ret = ops->vidioc_s_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
875 | fh, f); |
876 | break; | |
877 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
878 | if (ops->vidioc_s_fmt_type_private) |
879 | ret = ops->vidioc_s_fmt_type_private(file, | |
35ea11ff HV |
880 | fh, f); |
881 | break; | |
882 | } | |
883 | break; | |
884 | } | |
885 | case VIDIOC_TRY_FMT: | |
886 | { | |
887 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
888 | ||
889 | /* FIXME: Should be one dump per type */ | |
890 | dbgarg(cmd, "type=%s\n", prt_names(f->type, | |
891 | v4l2_type_names)); | |
892 | switch (f->type) { | |
893 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
894 | if (ops->vidioc_try_fmt_vid_cap) |
895 | ret = ops->vidioc_try_fmt_vid_cap(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_OVERLAY: | |
a399810c HV |
900 | if (ops->vidioc_try_fmt_vid_overlay) |
901 | ret = ops->vidioc_try_fmt_vid_overlay(file, | |
35ea11ff HV |
902 | fh, f); |
903 | break; | |
904 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c HV |
905 | if (ops->vidioc_try_fmt_vid_out) |
906 | ret = ops->vidioc_try_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
907 | if (!ret) |
908 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
909 | break; | |
910 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
911 | if (ops->vidioc_try_fmt_vid_out_overlay) |
912 | ret = ops->vidioc_try_fmt_vid_out_overlay(file, | |
35ea11ff HV |
913 | fh, f); |
914 | break; | |
915 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
916 | if (ops->vidioc_try_fmt_vbi_cap) |
917 | ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
918 | break; |
919 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
920 | if (ops->vidioc_try_fmt_vbi_out) |
921 | ret = ops->vidioc_try_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
922 | break; |
923 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
924 | if (ops->vidioc_try_fmt_sliced_vbi_cap) |
925 | ret = ops->vidioc_try_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
926 | fh, f); |
927 | break; | |
928 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
929 | if (ops->vidioc_try_fmt_sliced_vbi_out) |
930 | ret = ops->vidioc_try_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
931 | fh, f); |
932 | break; | |
933 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
934 | if (ops->vidioc_try_fmt_type_private) |
935 | ret = ops->vidioc_try_fmt_type_private(file, | |
35ea11ff HV |
936 | fh, f); |
937 | break; | |
938 | } | |
939 | ||
940 | break; | |
941 | } | |
942 | /* FIXME: Those buf reqs could be handled here, | |
943 | with some changes on videobuf to allow its header to be included at | |
944 | videodev2.h or being merged at videodev2. | |
945 | */ | |
946 | case VIDIOC_REQBUFS: | |
947 | { | |
948 | struct v4l2_requestbuffers *p = arg; | |
949 | ||
a399810c | 950 | if (!ops->vidioc_reqbufs) |
35ea11ff | 951 | break; |
a399810c | 952 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
953 | if (ret) |
954 | break; | |
955 | ||
a399810c | 956 | ret = ops->vidioc_reqbufs(file, fh, p); |
35ea11ff HV |
957 | dbgarg(cmd, "count=%d, type=%s, memory=%s\n", |
958 | p->count, | |
959 | prt_names(p->type, v4l2_type_names), | |
960 | prt_names(p->memory, v4l2_memory_names)); | |
961 | break; | |
962 | } | |
963 | case VIDIOC_QUERYBUF: | |
964 | { | |
965 | struct v4l2_buffer *p = arg; | |
966 | ||
a399810c | 967 | if (!ops->vidioc_querybuf) |
35ea11ff | 968 | break; |
a399810c | 969 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
970 | if (ret) |
971 | break; | |
972 | ||
a399810c | 973 | ret = ops->vidioc_querybuf(file, fh, p); |
35ea11ff HV |
974 | if (!ret) |
975 | dbgbuf(cmd, vfd, p); | |
976 | break; | |
977 | } | |
978 | case VIDIOC_QBUF: | |
979 | { | |
980 | struct v4l2_buffer *p = arg; | |
981 | ||
a399810c | 982 | if (!ops->vidioc_qbuf) |
35ea11ff | 983 | break; |
a399810c | 984 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
985 | if (ret) |
986 | break; | |
987 | ||
a399810c | 988 | ret = ops->vidioc_qbuf(file, fh, p); |
35ea11ff HV |
989 | if (!ret) |
990 | dbgbuf(cmd, vfd, p); | |
991 | break; | |
992 | } | |
993 | case VIDIOC_DQBUF: | |
994 | { | |
995 | struct v4l2_buffer *p = arg; | |
996 | ||
a399810c | 997 | if (!ops->vidioc_dqbuf) |
35ea11ff | 998 | break; |
a399810c | 999 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
1000 | if (ret) |
1001 | break; | |
1002 | ||
a399810c | 1003 | ret = ops->vidioc_dqbuf(file, fh, p); |
35ea11ff HV |
1004 | if (!ret) |
1005 | dbgbuf(cmd, vfd, p); | |
1006 | break; | |
1007 | } | |
1008 | case VIDIOC_OVERLAY: | |
1009 | { | |
1010 | int *i = arg; | |
1011 | ||
a399810c | 1012 | if (!ops->vidioc_overlay) |
35ea11ff HV |
1013 | break; |
1014 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1015 | ret = ops->vidioc_overlay(file, fh, *i); |
35ea11ff HV |
1016 | break; |
1017 | } | |
1018 | case VIDIOC_G_FBUF: | |
1019 | { | |
1020 | struct v4l2_framebuffer *p = arg; | |
1021 | ||
a399810c | 1022 | if (!ops->vidioc_g_fbuf) |
35ea11ff | 1023 | break; |
a399810c | 1024 | ret = ops->vidioc_g_fbuf(file, fh, arg); |
35ea11ff HV |
1025 | if (!ret) { |
1026 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
1027 | p->capability, p->flags, | |
1028 | (unsigned long)p->base); | |
1029 | v4l_print_pix_fmt(vfd, &p->fmt); | |
1030 | } | |
1031 | break; | |
1032 | } | |
1033 | case VIDIOC_S_FBUF: | |
1034 | { | |
1035 | struct v4l2_framebuffer *p = arg; | |
1036 | ||
a399810c | 1037 | if (!ops->vidioc_s_fbuf) |
35ea11ff HV |
1038 | break; |
1039 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
1040 | p->capability, p->flags, (unsigned long)p->base); | |
1041 | v4l_print_pix_fmt(vfd, &p->fmt); | |
a399810c | 1042 | ret = ops->vidioc_s_fbuf(file, fh, arg); |
35ea11ff HV |
1043 | break; |
1044 | } | |
1045 | case VIDIOC_STREAMON: | |
1046 | { | |
1047 | enum v4l2_buf_type i = *(int *)arg; | |
1048 | ||
a399810c | 1049 | if (!ops->vidioc_streamon) |
35ea11ff HV |
1050 | break; |
1051 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 1052 | ret = ops->vidioc_streamon(file, fh, i); |
35ea11ff HV |
1053 | break; |
1054 | } | |
1055 | case VIDIOC_STREAMOFF: | |
1056 | { | |
1057 | enum v4l2_buf_type i = *(int *)arg; | |
1058 | ||
a399810c | 1059 | if (!ops->vidioc_streamoff) |
35ea11ff HV |
1060 | break; |
1061 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 1062 | ret = ops->vidioc_streamoff(file, fh, i); |
35ea11ff HV |
1063 | break; |
1064 | } | |
1065 | /* ---------- tv norms ---------- */ | |
1066 | case VIDIOC_ENUMSTD: | |
1067 | { | |
1068 | struct v4l2_standard *p = arg; | |
1069 | v4l2_std_id id = vfd->tvnorms, curr_id = 0; | |
1070 | unsigned int index = p->index, i, j = 0; | |
1071 | const char *descr = ""; | |
1072 | ||
1073 | /* Return norm array in a canonical way */ | |
1074 | for (i = 0; i <= index && id; i++) { | |
1075 | /* last std value in the standards array is 0, so this | |
1076 | while always ends there since (id & 0) == 0. */ | |
1077 | while ((id & standards[j].std) != standards[j].std) | |
1078 | j++; | |
1079 | curr_id = standards[j].std; | |
1080 | descr = standards[j].descr; | |
1081 | j++; | |
1082 | if (curr_id == 0) | |
1083 | break; | |
1084 | if (curr_id != V4L2_STD_PAL && | |
1085 | curr_id != V4L2_STD_SECAM && | |
1086 | curr_id != V4L2_STD_NTSC) | |
1087 | id &= ~curr_id; | |
1088 | } | |
1089 | if (i <= index) | |
1090 | return -EINVAL; | |
1091 | ||
1092 | v4l2_video_std_construct(p, curr_id, descr); | |
1093 | p->index = index; | |
1094 | ||
1095 | dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, " | |
1096 | "framelines=%d\n", p->index, | |
1097 | (unsigned long long)p->id, p->name, | |
1098 | p->frameperiod.numerator, | |
1099 | p->frameperiod.denominator, | |
1100 | p->framelines); | |
1101 | ||
1102 | ret = 0; | |
1103 | break; | |
1104 | } | |
1105 | case VIDIOC_G_STD: | |
1106 | { | |
1107 | v4l2_std_id *id = arg; | |
1108 | ||
1109 | ret = 0; | |
1110 | /* Calls the specific handler */ | |
a399810c HV |
1111 | if (ops->vidioc_g_std) |
1112 | ret = ops->vidioc_g_std(file, fh, id); | |
35ea11ff HV |
1113 | else |
1114 | *id = vfd->current_norm; | |
1115 | ||
1116 | if (!ret) | |
1117 | dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id); | |
1118 | break; | |
1119 | } | |
1120 | case VIDIOC_S_STD: | |
1121 | { | |
1122 | v4l2_std_id *id = arg, norm; | |
1123 | ||
1124 | dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id); | |
1125 | ||
1126 | norm = (*id) & vfd->tvnorms; | |
1127 | if (vfd->tvnorms && !norm) /* Check if std is supported */ | |
1128 | break; | |
1129 | ||
1130 | /* Calls the specific handler */ | |
a399810c HV |
1131 | if (ops->vidioc_s_std) |
1132 | ret = ops->vidioc_s_std(file, fh, &norm); | |
35ea11ff HV |
1133 | else |
1134 | ret = -EINVAL; | |
1135 | ||
1136 | /* Updates standard information */ | |
1137 | if (ret >= 0) | |
1138 | vfd->current_norm = norm; | |
1139 | break; | |
1140 | } | |
1141 | case VIDIOC_QUERYSTD: | |
1142 | { | |
1143 | v4l2_std_id *p = arg; | |
1144 | ||
a399810c | 1145 | if (!ops->vidioc_querystd) |
35ea11ff | 1146 | break; |
a399810c | 1147 | ret = ops->vidioc_querystd(file, fh, arg); |
35ea11ff HV |
1148 | if (!ret) |
1149 | dbgarg(cmd, "detected std=%08Lx\n", | |
1150 | (unsigned long long)*p); | |
1151 | break; | |
1152 | } | |
1153 | /* ------ input switching ---------- */ | |
1154 | /* FIXME: Inputs can be handled inside videodev2 */ | |
1155 | case VIDIOC_ENUMINPUT: | |
1156 | { | |
1157 | struct v4l2_input *p = arg; | |
1158 | int i = p->index; | |
1159 | ||
a399810c | 1160 | if (!ops->vidioc_enum_input) |
35ea11ff HV |
1161 | break; |
1162 | memset(p, 0, sizeof(*p)); | |
1163 | p->index = i; | |
1164 | ||
a399810c | 1165 | ret = ops->vidioc_enum_input(file, fh, p); |
35ea11ff HV |
1166 | if (!ret) |
1167 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1168 | "audioset=%d, " | |
1169 | "tuner=%d, std=%08Lx, status=%d\n", | |
1170 | p->index, p->name, p->type, p->audioset, | |
1171 | p->tuner, | |
1172 | (unsigned long long)p->std, | |
1173 | p->status); | |
1174 | break; | |
1175 | } | |
1176 | case VIDIOC_G_INPUT: | |
1177 | { | |
1178 | unsigned int *i = arg; | |
1179 | ||
a399810c | 1180 | if (!ops->vidioc_g_input) |
35ea11ff | 1181 | break; |
a399810c | 1182 | ret = ops->vidioc_g_input(file, fh, i); |
35ea11ff HV |
1183 | if (!ret) |
1184 | dbgarg(cmd, "value=%d\n", *i); | |
1185 | break; | |
1186 | } | |
1187 | case VIDIOC_S_INPUT: | |
1188 | { | |
1189 | unsigned int *i = arg; | |
1190 | ||
a399810c | 1191 | if (!ops->vidioc_s_input) |
35ea11ff HV |
1192 | break; |
1193 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1194 | ret = ops->vidioc_s_input(file, fh, *i); |
35ea11ff HV |
1195 | break; |
1196 | } | |
1197 | ||
1198 | /* ------ output switching ---------- */ | |
1199 | case VIDIOC_ENUMOUTPUT: | |
1200 | { | |
1201 | struct v4l2_output *p = arg; | |
1202 | int i = p->index; | |
1203 | ||
a399810c | 1204 | if (!ops->vidioc_enum_output) |
35ea11ff HV |
1205 | break; |
1206 | memset(p, 0, sizeof(*p)); | |
1207 | p->index = i; | |
1208 | ||
a399810c | 1209 | ret = ops->vidioc_enum_output(file, fh, p); |
35ea11ff HV |
1210 | if (!ret) |
1211 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1212 | "audioset=0x%x, " | |
1213 | "modulator=%d, std=0x%08Lx\n", | |
1214 | p->index, p->name, p->type, p->audioset, | |
1215 | p->modulator, (unsigned long long)p->std); | |
1216 | break; | |
1217 | } | |
1218 | case VIDIOC_G_OUTPUT: | |
1219 | { | |
1220 | unsigned int *i = arg; | |
1221 | ||
a399810c | 1222 | if (!ops->vidioc_g_output) |
35ea11ff | 1223 | break; |
a399810c | 1224 | ret = ops->vidioc_g_output(file, fh, i); |
35ea11ff HV |
1225 | if (!ret) |
1226 | dbgarg(cmd, "value=%d\n", *i); | |
1227 | break; | |
1228 | } | |
1229 | case VIDIOC_S_OUTPUT: | |
1230 | { | |
1231 | unsigned int *i = arg; | |
1232 | ||
a399810c | 1233 | if (!ops->vidioc_s_output) |
35ea11ff HV |
1234 | break; |
1235 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1236 | ret = ops->vidioc_s_output(file, fh, *i); |
35ea11ff HV |
1237 | break; |
1238 | } | |
1239 | ||
1240 | /* --- controls ---------------------------------------------- */ | |
1241 | case VIDIOC_QUERYCTRL: | |
1242 | { | |
1243 | struct v4l2_queryctrl *p = arg; | |
1244 | ||
a399810c | 1245 | if (!ops->vidioc_queryctrl) |
35ea11ff | 1246 | break; |
a399810c | 1247 | ret = ops->vidioc_queryctrl(file, fh, p); |
35ea11ff HV |
1248 | if (!ret) |
1249 | dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, " | |
1250 | "step=%d, default=%d, flags=0x%08x\n", | |
1251 | p->id, p->type, p->name, | |
1252 | p->minimum, p->maximum, | |
1253 | p->step, p->default_value, p->flags); | |
1254 | else | |
1255 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1256 | break; | |
1257 | } | |
1258 | case VIDIOC_G_CTRL: | |
1259 | { | |
1260 | struct v4l2_control *p = arg; | |
1261 | ||
a399810c HV |
1262 | if (ops->vidioc_g_ctrl) |
1263 | ret = ops->vidioc_g_ctrl(file, fh, p); | |
1264 | else if (ops->vidioc_g_ext_ctrls) { | |
35ea11ff HV |
1265 | struct v4l2_ext_controls ctrls; |
1266 | struct v4l2_ext_control ctrl; | |
1267 | ||
1268 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1269 | ctrls.count = 1; | |
1270 | ctrls.controls = &ctrl; | |
1271 | ctrl.id = p->id; | |
1272 | ctrl.value = p->value; | |
1273 | if (check_ext_ctrls(&ctrls, 1)) { | |
a399810c | 1274 | ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1275 | if (ret == 0) |
1276 | p->value = ctrl.value; | |
1277 | } | |
1278 | } else | |
1279 | break; | |
1280 | if (!ret) | |
1281 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1282 | else | |
1283 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1284 | break; | |
1285 | } | |
1286 | case VIDIOC_S_CTRL: | |
1287 | { | |
1288 | struct v4l2_control *p = arg; | |
1289 | struct v4l2_ext_controls ctrls; | |
1290 | struct v4l2_ext_control ctrl; | |
1291 | ||
a399810c | 1292 | if (!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1293 | break; |
1294 | ||
1295 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1296 | ||
a399810c HV |
1297 | if (ops->vidioc_s_ctrl) { |
1298 | ret = ops->vidioc_s_ctrl(file, fh, p); | |
35ea11ff HV |
1299 | break; |
1300 | } | |
a399810c | 1301 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1302 | break; |
1303 | ||
1304 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1305 | ctrls.count = 1; | |
1306 | ctrls.controls = &ctrl; | |
1307 | ctrl.id = p->id; | |
1308 | ctrl.value = p->value; | |
1309 | if (check_ext_ctrls(&ctrls, 1)) | |
a399810c | 1310 | ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1311 | break; |
1312 | } | |
1313 | case VIDIOC_G_EXT_CTRLS: | |
1314 | { | |
1315 | struct v4l2_ext_controls *p = arg; | |
1316 | ||
1317 | p->error_idx = p->count; | |
a399810c | 1318 | if (!ops->vidioc_g_ext_ctrls) |
35ea11ff HV |
1319 | break; |
1320 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1321 | ret = ops->vidioc_g_ext_ctrls(file, fh, p); |
35ea11ff HV |
1322 | v4l_print_ext_ctrls(cmd, vfd, p, !ret); |
1323 | break; | |
1324 | } | |
1325 | case VIDIOC_S_EXT_CTRLS: | |
1326 | { | |
1327 | struct v4l2_ext_controls *p = arg; | |
1328 | ||
1329 | p->error_idx = p->count; | |
a399810c | 1330 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1331 | break; |
1332 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1333 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1334 | ret = ops->vidioc_s_ext_ctrls(file, fh, p); |
35ea11ff HV |
1335 | break; |
1336 | } | |
1337 | case VIDIOC_TRY_EXT_CTRLS: | |
1338 | { | |
1339 | struct v4l2_ext_controls *p = arg; | |
1340 | ||
1341 | p->error_idx = p->count; | |
a399810c | 1342 | if (!ops->vidioc_try_ext_ctrls) |
35ea11ff HV |
1343 | break; |
1344 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1345 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1346 | ret = ops->vidioc_try_ext_ctrls(file, fh, p); |
35ea11ff HV |
1347 | break; |
1348 | } | |
1349 | case VIDIOC_QUERYMENU: | |
1350 | { | |
1351 | struct v4l2_querymenu *p = arg; | |
1352 | ||
a399810c | 1353 | if (!ops->vidioc_querymenu) |
35ea11ff | 1354 | break; |
a399810c | 1355 | ret = ops->vidioc_querymenu(file, fh, p); |
35ea11ff HV |
1356 | if (!ret) |
1357 | dbgarg(cmd, "id=0x%x, index=%d, name=%s\n", | |
1358 | p->id, p->index, p->name); | |
1359 | else | |
1360 | dbgarg(cmd, "id=0x%x, index=%d\n", | |
1361 | p->id, p->index); | |
1362 | break; | |
1363 | } | |
1364 | /* --- audio ---------------------------------------------- */ | |
1365 | case VIDIOC_ENUMAUDIO: | |
1366 | { | |
1367 | struct v4l2_audio *p = arg; | |
1368 | ||
a399810c | 1369 | if (!ops->vidioc_enumaudio) |
35ea11ff | 1370 | break; |
a399810c | 1371 | ret = ops->vidioc_enumaudio(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, p->name, | |
1375 | p->capability, p->mode); | |
1376 | else | |
1377 | dbgarg(cmd, "index=%d\n", p->index); | |
1378 | break; | |
1379 | } | |
1380 | case VIDIOC_G_AUDIO: | |
1381 | { | |
1382 | struct v4l2_audio *p = arg; | |
1383 | __u32 index = p->index; | |
1384 | ||
a399810c | 1385 | if (!ops->vidioc_g_audio) |
35ea11ff HV |
1386 | break; |
1387 | ||
1388 | memset(p, 0, sizeof(*p)); | |
1389 | p->index = index; | |
a399810c | 1390 | ret = ops->vidioc_g_audio(file, fh, p); |
35ea11ff HV |
1391 | if (!ret) |
1392 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1393 | "mode=0x%x\n", p->index, | |
1394 | p->name, p->capability, p->mode); | |
1395 | else | |
1396 | dbgarg(cmd, "index=%d\n", p->index); | |
1397 | break; | |
1398 | } | |
1399 | case VIDIOC_S_AUDIO: | |
1400 | { | |
1401 | struct v4l2_audio *p = arg; | |
1402 | ||
a399810c | 1403 | if (!ops->vidioc_s_audio) |
35ea11ff HV |
1404 | break; |
1405 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1406 | "mode=0x%x\n", p->index, p->name, | |
1407 | p->capability, p->mode); | |
a399810c | 1408 | ret = ops->vidioc_s_audio(file, fh, p); |
35ea11ff HV |
1409 | break; |
1410 | } | |
1411 | case VIDIOC_ENUMAUDOUT: | |
1412 | { | |
1413 | struct v4l2_audioout *p = arg; | |
1414 | ||
a399810c | 1415 | if (!ops->vidioc_enumaudout) |
35ea11ff HV |
1416 | break; |
1417 | dbgarg(cmd, "Enum for index=%d\n", p->index); | |
a399810c | 1418 | ret = ops->vidioc_enumaudout(file, fh, p); |
35ea11ff HV |
1419 | if (!ret) |
1420 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1421 | "mode=%d\n", p->index, p->name, | |
1422 | p->capability, p->mode); | |
1423 | break; | |
1424 | } | |
1425 | case VIDIOC_G_AUDOUT: | |
1426 | { | |
1427 | struct v4l2_audioout *p = arg; | |
1428 | ||
a399810c | 1429 | if (!ops->vidioc_g_audout) |
35ea11ff HV |
1430 | break; |
1431 | dbgarg(cmd, "Enum for index=%d\n", p->index); | |
a399810c | 1432 | ret = ops->vidioc_g_audout(file, fh, p); |
35ea11ff HV |
1433 | if (!ret) |
1434 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1435 | "mode=%d\n", p->index, p->name, | |
1436 | p->capability, p->mode); | |
1437 | break; | |
1438 | } | |
1439 | case VIDIOC_S_AUDOUT: | |
1440 | { | |
1441 | struct v4l2_audioout *p = arg; | |
1442 | ||
a399810c | 1443 | if (!ops->vidioc_s_audout) |
35ea11ff HV |
1444 | break; |
1445 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1446 | "mode=%d\n", p->index, p->name, | |
1447 | p->capability, p->mode); | |
1448 | ||
a399810c | 1449 | ret = ops->vidioc_s_audout(file, fh, p); |
35ea11ff HV |
1450 | break; |
1451 | } | |
1452 | case VIDIOC_G_MODULATOR: | |
1453 | { | |
1454 | struct v4l2_modulator *p = arg; | |
1455 | ||
a399810c | 1456 | if (!ops->vidioc_g_modulator) |
35ea11ff | 1457 | break; |
a399810c | 1458 | ret = ops->vidioc_g_modulator(file, fh, p); |
35ea11ff HV |
1459 | if (!ret) |
1460 | dbgarg(cmd, "index=%d, name=%s, " | |
1461 | "capability=%d, rangelow=%d," | |
1462 | " rangehigh=%d, txsubchans=%d\n", | |
1463 | p->index, p->name, p->capability, | |
1464 | p->rangelow, p->rangehigh, | |
1465 | p->txsubchans); | |
1466 | break; | |
1467 | } | |
1468 | case VIDIOC_S_MODULATOR: | |
1469 | { | |
1470 | struct v4l2_modulator *p = arg; | |
1471 | ||
a399810c | 1472 | if (!ops->vidioc_s_modulator) |
35ea11ff HV |
1473 | break; |
1474 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1475 | "rangelow=%d, rangehigh=%d, txsubchans=%d\n", | |
1476 | p->index, p->name, p->capability, p->rangelow, | |
1477 | p->rangehigh, p->txsubchans); | |
a399810c | 1478 | ret = ops->vidioc_s_modulator(file, fh, p); |
35ea11ff HV |
1479 | break; |
1480 | } | |
1481 | case VIDIOC_G_CROP: | |
1482 | { | |
1483 | struct v4l2_crop *p = arg; | |
1484 | ||
a399810c | 1485 | if (!ops->vidioc_g_crop) |
35ea11ff HV |
1486 | break; |
1487 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
a399810c | 1488 | ret = ops->vidioc_g_crop(file, fh, p); |
35ea11ff HV |
1489 | if (!ret) |
1490 | dbgrect(vfd, "", &p->c); | |
1491 | break; | |
1492 | } | |
1493 | case VIDIOC_S_CROP: | |
1494 | { | |
1495 | struct v4l2_crop *p = arg; | |
1496 | ||
a399810c | 1497 | if (!ops->vidioc_s_crop) |
35ea11ff HV |
1498 | break; |
1499 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
1500 | dbgrect(vfd, "", &p->c); | |
a399810c | 1501 | ret = ops->vidioc_s_crop(file, fh, p); |
35ea11ff HV |
1502 | break; |
1503 | } | |
1504 | case VIDIOC_CROPCAP: | |
1505 | { | |
1506 | struct v4l2_cropcap *p = arg; | |
1507 | ||
1508 | /*FIXME: Should also show v4l2_fract pixelaspect */ | |
a399810c | 1509 | if (!ops->vidioc_cropcap) |
35ea11ff HV |
1510 | break; |
1511 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
a399810c | 1512 | ret = ops->vidioc_cropcap(file, fh, p); |
35ea11ff HV |
1513 | if (!ret) { |
1514 | dbgrect(vfd, "bounds ", &p->bounds); | |
1515 | dbgrect(vfd, "defrect ", &p->defrect); | |
1516 | } | |
1517 | break; | |
1518 | } | |
1519 | case VIDIOC_G_JPEGCOMP: | |
1520 | { | |
1521 | struct v4l2_jpegcompression *p = arg; | |
1522 | ||
a399810c | 1523 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff | 1524 | break; |
a399810c | 1525 | ret = ops->vidioc_g_jpegcomp(file, fh, p); |
35ea11ff HV |
1526 | if (!ret) |
1527 | dbgarg(cmd, "quality=%d, APPn=%d, " | |
1528 | "APP_len=%d, COM_len=%d, " | |
1529 | "jpeg_markers=%d\n", | |
1530 | p->quality, p->APPn, p->APP_len, | |
1531 | p->COM_len, p->jpeg_markers); | |
1532 | break; | |
1533 | } | |
1534 | case VIDIOC_S_JPEGCOMP: | |
1535 | { | |
1536 | struct v4l2_jpegcompression *p = arg; | |
1537 | ||
a399810c | 1538 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff HV |
1539 | break; |
1540 | dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, " | |
1541 | "COM_len=%d, jpeg_markers=%d\n", | |
1542 | p->quality, p->APPn, p->APP_len, | |
1543 | p->COM_len, p->jpeg_markers); | |
a399810c | 1544 | ret = ops->vidioc_s_jpegcomp(file, fh, p); |
35ea11ff HV |
1545 | break; |
1546 | } | |
1547 | case VIDIOC_G_ENC_INDEX: | |
1548 | { | |
1549 | struct v4l2_enc_idx *p = arg; | |
1550 | ||
a399810c | 1551 | if (!ops->vidioc_g_enc_index) |
35ea11ff | 1552 | break; |
a399810c | 1553 | ret = ops->vidioc_g_enc_index(file, fh, p); |
35ea11ff HV |
1554 | if (!ret) |
1555 | dbgarg(cmd, "entries=%d, entries_cap=%d\n", | |
1556 | p->entries, p->entries_cap); | |
1557 | break; | |
1558 | } | |
1559 | case VIDIOC_ENCODER_CMD: | |
1560 | { | |
1561 | struct v4l2_encoder_cmd *p = arg; | |
1562 | ||
a399810c | 1563 | if (!ops->vidioc_encoder_cmd) |
35ea11ff HV |
1564 | break; |
1565 | memset(&p->raw, 0, sizeof(p->raw)); | |
a399810c | 1566 | ret = ops->vidioc_encoder_cmd(file, fh, p); |
35ea11ff HV |
1567 | if (!ret) |
1568 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1569 | break; | |
1570 | } | |
1571 | case VIDIOC_TRY_ENCODER_CMD: | |
1572 | { | |
1573 | struct v4l2_encoder_cmd *p = arg; | |
1574 | ||
a399810c | 1575 | if (!ops->vidioc_try_encoder_cmd) |
35ea11ff HV |
1576 | break; |
1577 | memset(&p->raw, 0, sizeof(p->raw)); | |
a399810c | 1578 | ret = ops->vidioc_try_encoder_cmd(file, fh, p); |
35ea11ff HV |
1579 | if (!ret) |
1580 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1581 | break; | |
1582 | } | |
1583 | case VIDIOC_G_PARM: | |
1584 | { | |
1585 | struct v4l2_streamparm *p = arg; | |
1586 | __u32 type = p->type; | |
1587 | ||
1588 | memset(p, 0, sizeof(*p)); | |
1589 | p->type = type; | |
1590 | ||
a399810c HV |
1591 | if (ops->vidioc_g_parm) { |
1592 | ret = ops->vidioc_g_parm(file, fh, p); | |
35ea11ff HV |
1593 | } else { |
1594 | struct v4l2_standard s; | |
1595 | ||
1596 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
1597 | return -EINVAL; | |
1598 | ||
1599 | v4l2_video_std_construct(&s, vfd->current_norm, | |
1600 | v4l2_norm_to_name(vfd->current_norm)); | |
1601 | ||
1602 | p->parm.capture.timeperframe = s.frameperiod; | |
1603 | ret = 0; | |
1604 | } | |
1605 | ||
1606 | dbgarg(cmd, "type=%d\n", p->type); | |
1607 | break; | |
1608 | } | |
1609 | case VIDIOC_S_PARM: | |
1610 | { | |
1611 | struct v4l2_streamparm *p = arg; | |
1612 | ||
a399810c | 1613 | if (!ops->vidioc_s_parm) |
35ea11ff HV |
1614 | break; |
1615 | dbgarg(cmd, "type=%d\n", p->type); | |
a399810c | 1616 | ret = ops->vidioc_s_parm(file, fh, p); |
35ea11ff HV |
1617 | break; |
1618 | } | |
1619 | case VIDIOC_G_TUNER: | |
1620 | { | |
1621 | struct v4l2_tuner *p = arg; | |
1622 | __u32 index = p->index; | |
1623 | ||
a399810c | 1624 | if (!ops->vidioc_g_tuner) |
35ea11ff HV |
1625 | break; |
1626 | ||
1627 | memset(p, 0, sizeof(*p)); | |
1628 | p->index = index; | |
1629 | ||
a399810c | 1630 | ret = ops->vidioc_g_tuner(file, fh, p); |
35ea11ff HV |
1631 | if (!ret) |
1632 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1633 | "capability=0x%x, rangelow=%d, " | |
1634 | "rangehigh=%d, signal=%d, afc=%d, " | |
1635 | "rxsubchans=0x%x, audmode=%d\n", | |
1636 | p->index, p->name, p->type, | |
1637 | p->capability, p->rangelow, | |
1638 | p->rangehigh, p->signal, p->afc, | |
1639 | p->rxsubchans, p->audmode); | |
1640 | break; | |
1641 | } | |
1642 | case VIDIOC_S_TUNER: | |
1643 | { | |
1644 | struct v4l2_tuner *p = arg; | |
1645 | ||
a399810c | 1646 | if (!ops->vidioc_s_tuner) |
35ea11ff HV |
1647 | break; |
1648 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1649 | "capability=0x%x, rangelow=%d, " | |
1650 | "rangehigh=%d, signal=%d, afc=%d, " | |
1651 | "rxsubchans=0x%x, audmode=%d\n", | |
1652 | p->index, p->name, p->type, | |
1653 | p->capability, p->rangelow, | |
1654 | p->rangehigh, p->signal, p->afc, | |
1655 | p->rxsubchans, p->audmode); | |
a399810c | 1656 | ret = ops->vidioc_s_tuner(file, fh, p); |
35ea11ff HV |
1657 | break; |
1658 | } | |
1659 | case VIDIOC_G_FREQUENCY: | |
1660 | { | |
1661 | struct v4l2_frequency *p = arg; | |
1662 | ||
a399810c | 1663 | if (!ops->vidioc_g_frequency) |
35ea11ff HV |
1664 | break; |
1665 | ||
1666 | memset(p->reserved, 0, sizeof(p->reserved)); | |
1667 | ||
a399810c | 1668 | ret = ops->vidioc_g_frequency(file, fh, p); |
35ea11ff HV |
1669 | if (!ret) |
1670 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1671 | p->tuner, p->type, p->frequency); | |
1672 | break; | |
1673 | } | |
1674 | case VIDIOC_S_FREQUENCY: | |
1675 | { | |
1676 | struct v4l2_frequency *p = arg; | |
1677 | ||
a399810c | 1678 | if (!ops->vidioc_s_frequency) |
35ea11ff HV |
1679 | break; |
1680 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1681 | p->tuner, p->type, p->frequency); | |
a399810c | 1682 | ret = ops->vidioc_s_frequency(file, fh, p); |
35ea11ff HV |
1683 | break; |
1684 | } | |
1685 | case VIDIOC_G_SLICED_VBI_CAP: | |
1686 | { | |
1687 | struct v4l2_sliced_vbi_cap *p = arg; | |
1688 | __u32 type = p->type; | |
1689 | ||
a399810c | 1690 | if (!ops->vidioc_g_sliced_vbi_cap) |
35ea11ff HV |
1691 | break; |
1692 | memset(p, 0, sizeof(*p)); | |
1693 | p->type = type; | |
1694 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
a399810c | 1695 | ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p); |
35ea11ff HV |
1696 | if (!ret) |
1697 | dbgarg2("service_set=%d\n", p->service_set); | |
1698 | break; | |
1699 | } | |
1700 | case VIDIOC_LOG_STATUS: | |
1701 | { | |
a399810c | 1702 | if (!ops->vidioc_log_status) |
35ea11ff | 1703 | break; |
a399810c | 1704 | ret = ops->vidioc_log_status(file, fh); |
35ea11ff HV |
1705 | break; |
1706 | } | |
1707 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1708 | case VIDIOC_DBG_G_REGISTER: | |
1709 | { | |
1710 | struct v4l2_register *p = arg; | |
1711 | ||
1712 | if (!capable(CAP_SYS_ADMIN)) | |
1713 | ret = -EPERM; | |
a399810c HV |
1714 | else if (ops->vidioc_g_register) |
1715 | ret = ops->vidioc_g_register(file, fh, p); | |
35ea11ff HV |
1716 | break; |
1717 | } | |
1718 | case VIDIOC_DBG_S_REGISTER: | |
1719 | { | |
1720 | struct v4l2_register *p = arg; | |
1721 | ||
1722 | if (!capable(CAP_SYS_ADMIN)) | |
1723 | ret = -EPERM; | |
a399810c HV |
1724 | else if (ops->vidioc_s_register) |
1725 | ret = ops->vidioc_s_register(file, fh, p); | |
35ea11ff HV |
1726 | break; |
1727 | } | |
1728 | #endif | |
1729 | case VIDIOC_G_CHIP_IDENT: | |
1730 | { | |
1731 | struct v4l2_chip_ident *p = arg; | |
1732 | ||
a399810c | 1733 | if (!ops->vidioc_g_chip_ident) |
35ea11ff | 1734 | break; |
a399810c | 1735 | ret = ops->vidioc_g_chip_ident(file, fh, p); |
35ea11ff HV |
1736 | if (!ret) |
1737 | dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision); | |
1738 | break; | |
1739 | } | |
35ea11ff HV |
1740 | case VIDIOC_S_HW_FREQ_SEEK: |
1741 | { | |
1742 | struct v4l2_hw_freq_seek *p = arg; | |
1743 | ||
a399810c | 1744 | if (!ops->vidioc_s_hw_freq_seek) |
35ea11ff HV |
1745 | break; |
1746 | dbgarg(cmd, | |
1747 | "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n", | |
1748 | p->tuner, p->type, p->seek_upward, p->wrap_around); | |
a399810c HV |
1749 | ret = ops->vidioc_s_hw_freq_seek(file, fh, p); |
1750 | break; | |
1751 | } | |
1752 | default: | |
1753 | { | |
1754 | if (!ops->vidioc_default) | |
1755 | break; | |
1756 | ret = ops->vidioc_default(file, fh, cmd, arg); | |
35ea11ff HV |
1757 | break; |
1758 | } | |
1759 | } /* switch */ | |
1760 | ||
1761 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { | |
1762 | if (ret < 0) { | |
1763 | v4l_print_ioctl(vfd->name, cmd); | |
1764 | printk(KERN_CONT " error %d\n", ret); | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | return ret; | |
1769 | } | |
1770 | ||
1771 | int video_ioctl2(struct inode *inode, struct file *file, | |
1772 | unsigned int cmd, unsigned long arg) | |
1773 | { | |
1774 | char sbuf[128]; | |
1775 | void *mbuf = NULL; | |
1776 | void *parg = NULL; | |
1777 | int err = -EINVAL; | |
1778 | int is_ext_ctrl; | |
1779 | size_t ctrls_size = 0; | |
1780 | void __user *user_ptr = NULL; | |
1781 | ||
1782 | #ifdef __OLD_VIDIOC_ | |
1783 | cmd = video_fix_command(cmd); | |
1784 | #endif | |
1785 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
1786 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
1787 | ||
1788 | /* Copy arguments into temp kernel buffer */ | |
1789 | switch (_IOC_DIR(cmd)) { | |
1790 | case _IOC_NONE: | |
1791 | parg = NULL; | |
1792 | break; | |
1793 | case _IOC_READ: | |
1794 | case _IOC_WRITE: | |
1795 | case (_IOC_WRITE | _IOC_READ): | |
1796 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { | |
1797 | parg = sbuf; | |
1798 | } else { | |
1799 | /* too big to allocate from stack */ | |
1800 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
1801 | if (NULL == mbuf) | |
1802 | return -ENOMEM; | |
1803 | parg = mbuf; | |
1804 | } | |
1805 | ||
1806 | err = -EFAULT; | |
1807 | if (_IOC_DIR(cmd) & _IOC_WRITE) | |
1808 | if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) | |
1809 | goto out; | |
1810 | break; | |
1811 | } | |
1812 | ||
1813 | if (is_ext_ctrl) { | |
1814 | struct v4l2_ext_controls *p = parg; | |
1815 | ||
1816 | /* In case of an error, tell the caller that it wasn't | |
1817 | a specific control that caused it. */ | |
1818 | p->error_idx = p->count; | |
1819 | user_ptr = (void __user *)p->controls; | |
1820 | if (p->count) { | |
1821 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
1822 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
1823 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
1824 | err = -ENOMEM; | |
1825 | if (NULL == mbuf) | |
1826 | goto out_ext_ctrl; | |
1827 | err = -EFAULT; | |
1828 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
1829 | goto out_ext_ctrl; | |
1830 | p->controls = mbuf; | |
1831 | } | |
1832 | } | |
1833 | ||
1834 | /* Handles IOCTL */ | |
1835 | err = __video_do_ioctl(inode, file, cmd, parg); | |
1836 | if (err == -ENOIOCTLCMD) | |
1837 | err = -EINVAL; | |
1838 | if (is_ext_ctrl) { | |
1839 | struct v4l2_ext_controls *p = parg; | |
1840 | ||
1841 | p->controls = (void *)user_ptr; | |
1842 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
1843 | err = -EFAULT; | |
1844 | goto out_ext_ctrl; | |
1845 | } | |
1846 | if (err < 0) | |
1847 | goto out; | |
1848 | ||
1849 | out_ext_ctrl: | |
1850 | /* Copy results into user buffer */ | |
1851 | switch (_IOC_DIR(cmd)) { | |
1852 | case _IOC_READ: | |
1853 | case (_IOC_WRITE | _IOC_READ): | |
1854 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
1855 | err = -EFAULT; | |
1856 | break; | |
1857 | } | |
1858 | ||
1859 | out: | |
1860 | kfree(mbuf); | |
1861 | return err; | |
1862 | } | |
1863 | EXPORT_SYMBOL(video_ioctl2); |