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TOMOYO Linux Cross Reference
Linux/include/media/v4l2-ioctl.h

Version: ~ [ linux-4.20-rc6 ] ~ [ linux-4.19.8 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.87 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.144 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.166 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.128 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.61 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.31.14 ] ~ [ linux-2.6.30.10 ] ~ [ linux-2.6.29.6 ] ~ [ linux-2.6.28.10 ] ~ [ linux-2.6.27.62 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*
  3  *
  4  *      V 4 L 2   D R I V E R   H E L P E R   A P I
  5  *
  6  * Moved from videodev2.h
  7  *
  8  *      Some commonly needed functions for drivers (v4l2-common.o module)
  9  */
 10 #ifndef _V4L2_IOCTL_H
 11 #define _V4L2_IOCTL_H
 12 
 13 #include <linux/poll.h>
 14 #include <linux/fs.h>
 15 #include <linux/mutex.h>
 16 #include <linux/sched/signal.h>
 17 #include <linux/compiler.h> /* need __user */
 18 #include <linux/videodev2.h>
 19 
 20 struct v4l2_fh;
 21 
 22 /**
 23  * struct v4l2_ioctl_ops - describe operations for each V4L2 ioctl
 24  *
 25  * @vidioc_querycap: pointer to the function that implements
 26  *      :ref:`VIDIOC_QUERYCAP <vidioc_querycap>` ioctl
 27  * @vidioc_enum_fmt_vid_cap: pointer to the function that implements
 28  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 29  *      for video capture in single plane mode
 30  * @vidioc_enum_fmt_vid_overlay: pointer to the function that implements
 31  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 32  *      for video overlay
 33  * @vidioc_enum_fmt_vid_out: pointer to the function that implements
 34  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 35  *      for video output in single plane mode
 36  * @vidioc_enum_fmt_vid_cap_mplane: pointer to the function that implements
 37  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 38  *      for video capture in multiplane mode
 39  * @vidioc_enum_fmt_vid_out_mplane: pointer to the function that implements
 40  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 41  *      for video output in multiplane mode
 42  * @vidioc_enum_fmt_sdr_cap: pointer to the function that implements
 43  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 44  *      for Software Defined Radio capture
 45  * @vidioc_enum_fmt_sdr_out: pointer to the function that implements
 46  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 47  *      for Software Defined Radio output
 48  * @vidioc_enum_fmt_meta_cap: pointer to the function that implements
 49  *      :ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
 50  *      for metadata capture
 51  * @vidioc_g_fmt_vid_cap: pointer to the function that implements
 52  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
 53  *      in single plane mode
 54  * @vidioc_g_fmt_vid_overlay: pointer to the function that implements
 55  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 56  * @vidioc_g_fmt_vid_out: pointer to the function that implements
 57  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
 58  *      in single plane mode
 59  * @vidioc_g_fmt_vid_out_overlay: pointer to the function that implements
 60  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
 61  * @vidioc_g_fmt_vbi_cap: pointer to the function that implements
 62  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 63  * @vidioc_g_fmt_vbi_out: pointer to the function that implements
 64  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 65  * @vidioc_g_fmt_sliced_vbi_cap: pointer to the function that implements
 66  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
 67  * @vidioc_g_fmt_sliced_vbi_out: pointer to the function that implements
 68  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
 69  * @vidioc_g_fmt_vid_cap_mplane: pointer to the function that implements
 70  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
 71  *      in multiple plane mode
 72  * @vidioc_g_fmt_vid_out_mplane: pointer to the function that implements
 73  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
 74  *      in multiplane plane mode
 75  * @vidioc_g_fmt_sdr_cap: pointer to the function that implements
 76  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 77  *      Radio capture
 78  * @vidioc_g_fmt_sdr_out: pointer to the function that implements
 79  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
 80  *      Radio output
 81  * @vidioc_g_fmt_meta_cap: pointer to the function that implements
 82  *      :ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
 83  * @vidioc_s_fmt_vid_cap: pointer to the function that implements
 84  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
 85  *      in single plane mode
 86  * @vidioc_s_fmt_vid_overlay: pointer to the function that implements
 87  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay
 88  * @vidioc_s_fmt_vid_out: pointer to the function that implements
 89  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
 90  *      in single plane mode
 91  * @vidioc_s_fmt_vid_out_overlay: pointer to the function that implements
 92  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
 93  * @vidioc_s_fmt_vbi_cap: pointer to the function that implements
 94  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
 95  * @vidioc_s_fmt_vbi_out: pointer to the function that implements
 96  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
 97  * @vidioc_s_fmt_sliced_vbi_cap: pointer to the function that implements
 98  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
 99  * @vidioc_s_fmt_sliced_vbi_out: pointer to the function that implements
100  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
101  * @vidioc_s_fmt_vid_cap_mplane: pointer to the function that implements
102  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
103  *      in multiple plane mode
104  * @vidioc_s_fmt_vid_out_mplane: pointer to the function that implements
105  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
106  *      in multiplane plane mode
107  * @vidioc_s_fmt_sdr_cap: pointer to the function that implements
108  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
109  *      Radio capture
110  * @vidioc_s_fmt_sdr_out: pointer to the function that implements
111  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
112  *      Radio output
113  * @vidioc_s_fmt_meta_cap: pointer to the function that implements
114  *      :ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
115  * @vidioc_try_fmt_vid_cap: pointer to the function that implements
116  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
117  *      in single plane mode
118  * @vidioc_try_fmt_vid_overlay: pointer to the function that implements
119  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
120  * @vidioc_try_fmt_vid_out: pointer to the function that implements
121  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
122  *      in single plane mode
123  * @vidioc_try_fmt_vid_out_overlay: pointer to the function that implements
124  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
125  *      output
126  * @vidioc_try_fmt_vbi_cap: pointer to the function that implements
127  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
128  * @vidioc_try_fmt_vbi_out: pointer to the function that implements
129  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
130  * @vidioc_try_fmt_sliced_vbi_cap: pointer to the function that implements
131  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI
132  *      capture
133  * @vidioc_try_fmt_sliced_vbi_out: pointer to the function that implements
134  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
135  * @vidioc_try_fmt_vid_cap_mplane: pointer to the function that implements
136  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
137  *      in multiple plane mode
138  * @vidioc_try_fmt_vid_out_mplane: pointer to the function that implements
139  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
140  *      in multiplane plane mode
141  * @vidioc_try_fmt_sdr_cap: pointer to the function that implements
142  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
143  *      Radio capture
144  * @vidioc_try_fmt_sdr_out: pointer to the function that implements
145  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
146  *      Radio output
147  * @vidioc_try_fmt_meta_cap: pointer to the function that implements
148  *      :ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
149  * @vidioc_reqbufs: pointer to the function that implements
150  *      :ref:`VIDIOC_REQBUFS <vidioc_reqbufs>` ioctl
151  * @vidioc_querybuf: pointer to the function that implements
152  *      :ref:`VIDIOC_QUERYBUF <vidioc_querybuf>` ioctl
153  * @vidioc_qbuf: pointer to the function that implements
154  *      :ref:`VIDIOC_QBUF <vidioc_qbuf>` ioctl
155  * @vidioc_expbuf: pointer to the function that implements
156  *      :ref:`VIDIOC_EXPBUF <vidioc_expbuf>` ioctl
157  * @vidioc_dqbuf: pointer to the function that implements
158  *      :ref:`VIDIOC_DQBUF <vidioc_qbuf>` ioctl
159  * @vidioc_create_bufs: pointer to the function that implements
160  *      :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
161  * @vidioc_prepare_buf: pointer to the function that implements
162  *      :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
163  * @vidioc_overlay: pointer to the function that implements
164  *      :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
165  * @vidioc_g_fbuf: pointer to the function that implements
166  *      :ref:`VIDIOC_G_FBUF <vidioc_g_fbuf>` ioctl
167  * @vidioc_s_fbuf: pointer to the function that implements
168  *      :ref:`VIDIOC_S_FBUF <vidioc_g_fbuf>` ioctl
169  * @vidioc_streamon: pointer to the function that implements
170  *      :ref:`VIDIOC_STREAMON <vidioc_streamon>` ioctl
171  * @vidioc_streamoff: pointer to the function that implements
172  *      :ref:`VIDIOC_STREAMOFF <vidioc_streamon>` ioctl
173  * @vidioc_g_std: pointer to the function that implements
174  *      :ref:`VIDIOC_G_STD <vidioc_g_std>` ioctl
175  * @vidioc_s_std: pointer to the function that implements
176  *      :ref:`VIDIOC_S_STD <vidioc_g_std>` ioctl
177  * @vidioc_querystd: pointer to the function that implements
178  *      :ref:`VIDIOC_QUERYSTD <vidioc_querystd>` ioctl
179  * @vidioc_enum_input: pointer to the function that implements
180  *      :ref:`VIDIOC_ENUM_INPUT <vidioc_g_input>` ioctl
181  * @vidioc_g_input: pointer to the function that implements
182  *      :ref:`VIDIOC_G_INPUT <vidioc_g_input>` ioctl
183  * @vidioc_s_input: pointer to the function that implements
184  *      :ref:`VIDIOC_S_INPUT <vidioc_g_input>` ioctl
185  * @vidioc_enum_output: pointer to the function that implements
186  *      :ref:`VIDIOC_ENUM_OUTPUT <vidioc_g_output>` ioctl
187  * @vidioc_g_output: pointer to the function that implements
188  *      :ref:`VIDIOC_G_OUTPUT <vidioc_g_output>` ioctl
189  * @vidioc_s_output: pointer to the function that implements
190  *      :ref:`VIDIOC_S_OUTPUT <vidioc_g_output>` ioctl
191  * @vidioc_queryctrl: pointer to the function that implements
192  *      :ref:`VIDIOC_QUERYCTRL <vidioc_queryctrl>` ioctl
193  * @vidioc_query_ext_ctrl: pointer to the function that implements
194  *      :ref:`VIDIOC_QUERY_EXT_CTRL <vidioc_queryctrl>` ioctl
195  * @vidioc_g_ctrl: pointer to the function that implements
196  *      :ref:`VIDIOC_G_CTRL <vidioc_g_ctrl>` ioctl
197  * @vidioc_s_ctrl: pointer to the function that implements
198  *      :ref:`VIDIOC_S_CTRL <vidioc_g_ctrl>` ioctl
199  * @vidioc_g_ext_ctrls: pointer to the function that implements
200  *      :ref:`VIDIOC_G_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
201  * @vidioc_s_ext_ctrls: pointer to the function that implements
202  *      :ref:`VIDIOC_S_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
203  * @vidioc_try_ext_ctrls: pointer to the function that implements
204  *      :ref:`VIDIOC_TRY_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
205  * @vidioc_querymenu: pointer to the function that implements
206  *      :ref:`VIDIOC_QUERYMENU <vidioc_queryctrl>` ioctl
207  * @vidioc_enumaudio: pointer to the function that implements
208  *      :ref:`VIDIOC_ENUMAUDIO <vidioc_enumaudio>` ioctl
209  * @vidioc_g_audio: pointer to the function that implements
210  *      :ref:`VIDIOC_G_AUDIO <vidioc_g_audio>` ioctl
211  * @vidioc_s_audio: pointer to the function that implements
212  *      :ref:`VIDIOC_S_AUDIO <vidioc_g_audio>` ioctl
213  * @vidioc_enumaudout: pointer to the function that implements
214  *      :ref:`VIDIOC_ENUMAUDOUT <vidioc_enumaudout>` ioctl
215  * @vidioc_g_audout: pointer to the function that implements
216  *      :ref:`VIDIOC_G_AUDOUT <vidioc_g_audout>` ioctl
217  * @vidioc_s_audout: pointer to the function that implements
218  *      :ref:`VIDIOC_S_AUDOUT <vidioc_g_audout>` ioctl
219  * @vidioc_g_modulator: pointer to the function that implements
220  *      :ref:`VIDIOC_G_MODULATOR <vidioc_g_modulator>` ioctl
221  * @vidioc_s_modulator: pointer to the function that implements
222  *      :ref:`VIDIOC_S_MODULATOR <vidioc_g_modulator>` ioctl
223  * @vidioc_cropcap: pointer to the function that implements
224  *      :ref:`VIDIOC_CROPCAP <vidioc_cropcap>` ioctl
225  * @vidioc_g_crop: pointer to the function that implements
226  *      :ref:`VIDIOC_G_CROP <vidioc_g_crop>` ioctl
227  * @vidioc_s_crop: pointer to the function that implements
228  *      :ref:`VIDIOC_S_CROP <vidioc_g_crop>` ioctl
229  * @vidioc_g_selection: pointer to the function that implements
230  *      :ref:`VIDIOC_G_SELECTION <vidioc_g_selection>` ioctl
231  * @vidioc_s_selection: pointer to the function that implements
232  *      :ref:`VIDIOC_S_SELECTION <vidioc_g_selection>` ioctl
233  * @vidioc_g_jpegcomp: pointer to the function that implements
234  *      :ref:`VIDIOC_G_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
235  * @vidioc_s_jpegcomp: pointer to the function that implements
236  *      :ref:`VIDIOC_S_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
237  * @vidioc_g_enc_index: pointer to the function that implements
238  *      :ref:`VIDIOC_G_ENC_INDEX <vidioc_g_enc_index>` ioctl
239  * @vidioc_encoder_cmd: pointer to the function that implements
240  *      :ref:`VIDIOC_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
241  * @vidioc_try_encoder_cmd: pointer to the function that implements
242  *      :ref:`VIDIOC_TRY_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
243  * @vidioc_decoder_cmd: pointer to the function that implements
244  *      :ref:`VIDIOC_DECODER_CMD <vidioc_decoder_cmd>` ioctl
245  * @vidioc_try_decoder_cmd: pointer to the function that implements
246  *      :ref:`VIDIOC_TRY_DECODER_CMD <vidioc_decoder_cmd>` ioctl
247  * @vidioc_g_parm: pointer to the function that implements
248  *      :ref:`VIDIOC_G_PARM <vidioc_g_parm>` ioctl
249  * @vidioc_s_parm: pointer to the function that implements
250  *      :ref:`VIDIOC_S_PARM <vidioc_g_parm>` ioctl
251  * @vidioc_g_tuner: pointer to the function that implements
252  *      :ref:`VIDIOC_G_TUNER <vidioc_g_tuner>` ioctl
253  * @vidioc_s_tuner: pointer to the function that implements
254  *      :ref:`VIDIOC_S_TUNER <vidioc_g_tuner>` ioctl
255  * @vidioc_g_frequency: pointer to the function that implements
256  *      :ref:`VIDIOC_G_FREQUENCY <vidioc_g_frequency>` ioctl
257  * @vidioc_s_frequency: pointer to the function that implements
258  *      :ref:`VIDIOC_S_FREQUENCY <vidioc_g_frequency>` ioctl
259  * @vidioc_enum_freq_bands: pointer to the function that implements
260  *      :ref:`VIDIOC_ENUM_FREQ_BANDS <vidioc_enum_freq_bands>` ioctl
261  * @vidioc_g_sliced_vbi_cap: pointer to the function that implements
262  *      :ref:`VIDIOC_G_SLICED_VBI_CAP <vidioc_g_sliced_vbi_cap>` ioctl
263  * @vidioc_log_status: pointer to the function that implements
264  *      :ref:`VIDIOC_LOG_STATUS <vidioc_log_status>` ioctl
265  * @vidioc_s_hw_freq_seek: pointer to the function that implements
266  *      :ref:`VIDIOC_S_HW_FREQ_SEEK <vidioc_s_hw_freq_seek>` ioctl
267  * @vidioc_g_register: pointer to the function that implements
268  *      :ref:`VIDIOC_DBG_G_REGISTER <vidioc_dbg_g_register>` ioctl
269  * @vidioc_s_register: pointer to the function that implements
270  *      :ref:`VIDIOC_DBG_S_REGISTER <vidioc_dbg_g_register>` ioctl
271  * @vidioc_g_chip_info: pointer to the function that implements
272  *      :ref:`VIDIOC_DBG_G_CHIP_INFO <vidioc_dbg_g_chip_info>` ioctl
273  * @vidioc_enum_framesizes: pointer to the function that implements
274  *      :ref:`VIDIOC_ENUM_FRAMESIZES <vidioc_enum_framesizes>` ioctl
275  * @vidioc_enum_frameintervals: pointer to the function that implements
276  *      :ref:`VIDIOC_ENUM_FRAMEINTERVALS <vidioc_enum_frameintervals>` ioctl
277  * @vidioc_s_dv_timings: pointer to the function that implements
278  *      :ref:`VIDIOC_S_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
279  * @vidioc_g_dv_timings: pointer to the function that implements
280  *      :ref:`VIDIOC_G_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
281  * @vidioc_query_dv_timings: pointer to the function that implements
282  *      :ref:`VIDIOC_QUERY_DV_TIMINGS <vidioc_query_dv_timings>` ioctl
283  * @vidioc_enum_dv_timings: pointer to the function that implements
284  *      :ref:`VIDIOC_ENUM_DV_TIMINGS <vidioc_enum_dv_timings>` ioctl
285  * @vidioc_dv_timings_cap: pointer to the function that implements
286  *      :ref:`VIDIOC_DV_TIMINGS_CAP <vidioc_dv_timings_cap>` ioctl
287  * @vidioc_g_edid: pointer to the function that implements
288  *      :ref:`VIDIOC_G_EDID <vidioc_g_edid>` ioctl
289  * @vidioc_s_edid: pointer to the function that implements
290  *      :ref:`VIDIOC_S_EDID <vidioc_g_edid>` ioctl
291  * @vidioc_subscribe_event: pointer to the function that implements
292  *      :ref:`VIDIOC_SUBSCRIBE_EVENT <vidioc_subscribe_event>` ioctl
293  * @vidioc_unsubscribe_event: pointer to the function that implements
294  *      :ref:`VIDIOC_UNSUBSCRIBE_EVENT <vidioc_unsubscribe_event>` ioctl
295  * @vidioc_default: pointed used to allow other ioctls
296  */
297 struct v4l2_ioctl_ops {
298         /* ioctl callbacks */
299 
300         /* VIDIOC_QUERYCAP handler */
301         int (*vidioc_querycap)(struct file *file, void *fh,
302                                struct v4l2_capability *cap);
303 
304         /* VIDIOC_ENUM_FMT handlers */
305         int (*vidioc_enum_fmt_vid_cap)(struct file *file, void *fh,
306                                        struct v4l2_fmtdesc *f);
307         int (*vidioc_enum_fmt_vid_overlay)(struct file *file, void *fh,
308                                            struct v4l2_fmtdesc *f);
309         int (*vidioc_enum_fmt_vid_out)(struct file *file, void *fh,
310                                        struct v4l2_fmtdesc *f);
311         int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
312                                               struct v4l2_fmtdesc *f);
313         int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
314                                               struct v4l2_fmtdesc *f);
315         int (*vidioc_enum_fmt_sdr_cap)(struct file *file, void *fh,
316                                        struct v4l2_fmtdesc *f);
317         int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh,
318                                        struct v4l2_fmtdesc *f);
319         int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh,
320                                         struct v4l2_fmtdesc *f);
321 
322         /* VIDIOC_G_FMT handlers */
323         int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
324                                     struct v4l2_format *f);
325         int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
326                                         struct v4l2_format *f);
327         int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
328                                     struct v4l2_format *f);
329         int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
330                                             struct v4l2_format *f);
331         int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
332                                     struct v4l2_format *f);
333         int (*vidioc_g_fmt_vbi_out)(struct file *file, void *fh,
334                                     struct v4l2_format *f);
335         int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
336                                            struct v4l2_format *f);
337         int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
338                                            struct v4l2_format *f);
339         int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
340                                            struct v4l2_format *f);
341         int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
342                                            struct v4l2_format *f);
343         int (*vidioc_g_fmt_sdr_cap)(struct file *file, void *fh,
344                                     struct v4l2_format *f);
345         int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh,
346                                     struct v4l2_format *f);
347         int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh,
348                                      struct v4l2_format *f);
349 
350         /* VIDIOC_S_FMT handlers */
351         int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
352                                     struct v4l2_format *f);
353         int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
354                                         struct v4l2_format *f);
355         int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
356                                     struct v4l2_format *f);
357         int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
358                                             struct v4l2_format *f);
359         int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
360                                     struct v4l2_format *f);
361         int (*vidioc_s_fmt_vbi_out)(struct file *file, void *fh,
362                                     struct v4l2_format *f);
363         int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
364                                            struct v4l2_format *f);
365         int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
366                                            struct v4l2_format *f);
367         int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
368                                            struct v4l2_format *f);
369         int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
370                                            struct v4l2_format *f);
371         int (*vidioc_s_fmt_sdr_cap)(struct file *file, void *fh,
372                                     struct v4l2_format *f);
373         int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh,
374                                     struct v4l2_format *f);
375         int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh,
376                                      struct v4l2_format *f);
377 
378         /* VIDIOC_TRY_FMT handlers */
379         int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
380                                       struct v4l2_format *f);
381         int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
382                                           struct v4l2_format *f);
383         int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
384                                       struct v4l2_format *f);
385         int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
386                                              struct v4l2_format *f);
387         int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
388                                       struct v4l2_format *f);
389         int (*vidioc_try_fmt_vbi_out)(struct file *file, void *fh,
390                                       struct v4l2_format *f);
391         int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
392                                              struct v4l2_format *f);
393         int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
394                                              struct v4l2_format *f);
395         int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
396                                              struct v4l2_format *f);
397         int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
398                                              struct v4l2_format *f);
399         int (*vidioc_try_fmt_sdr_cap)(struct file *file, void *fh,
400                                       struct v4l2_format *f);
401         int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh,
402                                       struct v4l2_format *f);
403         int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh,
404                                        struct v4l2_format *f);
405 
406         /* Buffer handlers */
407         int (*vidioc_reqbufs)(struct file *file, void *fh,
408                               struct v4l2_requestbuffers *b);
409         int (*vidioc_querybuf)(struct file *file, void *fh,
410                                struct v4l2_buffer *b);
411         int (*vidioc_qbuf)(struct file *file, void *fh,
412                            struct v4l2_buffer *b);
413         int (*vidioc_expbuf)(struct file *file, void *fh,
414                              struct v4l2_exportbuffer *e);
415         int (*vidioc_dqbuf)(struct file *file, void *fh,
416                             struct v4l2_buffer *b);
417 
418         int (*vidioc_create_bufs)(struct file *file, void *fh,
419                                   struct v4l2_create_buffers *b);
420         int (*vidioc_prepare_buf)(struct file *file, void *fh,
421                                   struct v4l2_buffer *b);
422 
423         int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
424         int (*vidioc_g_fbuf)(struct file *file, void *fh,
425                              struct v4l2_framebuffer *a);
426         int (*vidioc_s_fbuf)(struct file *file, void *fh,
427                              const struct v4l2_framebuffer *a);
428 
429                 /* Stream on/off */
430         int (*vidioc_streamon)(struct file *file, void *fh,
431                                enum v4l2_buf_type i);
432         int (*vidioc_streamoff)(struct file *file, void *fh,
433                                 enum v4l2_buf_type i);
434 
435                 /*
436                  * Standard handling
437                  *
438                  * Note: ENUMSTD is handled by videodev.c
439                  */
440         int (*vidioc_g_std)(struct file *file, void *fh, v4l2_std_id *norm);
441         int (*vidioc_s_std)(struct file *file, void *fh, v4l2_std_id norm);
442         int (*vidioc_querystd)(struct file *file, void *fh, v4l2_std_id *a);
443 
444                 /* Input handling */
445         int (*vidioc_enum_input)(struct file *file, void *fh,
446                                  struct v4l2_input *inp);
447         int (*vidioc_g_input)(struct file *file, void *fh, unsigned int *i);
448         int (*vidioc_s_input)(struct file *file, void *fh, unsigned int i);
449 
450                 /* Output handling */
451         int (*vidioc_enum_output)(struct file *file, void *fh,
452                                   struct v4l2_output *a);
453         int (*vidioc_g_output)(struct file *file, void *fh, unsigned int *i);
454         int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);
455 
456                 /* Control handling */
457         int (*vidioc_queryctrl)(struct file *file, void *fh,
458                                 struct v4l2_queryctrl *a);
459         int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
460                                      struct v4l2_query_ext_ctrl *a);
461         int (*vidioc_g_ctrl)(struct file *file, void *fh,
462                              struct v4l2_control *a);
463         int (*vidioc_s_ctrl)(struct file *file, void *fh,
464                              struct v4l2_control *a);
465         int (*vidioc_g_ext_ctrls)(struct file *file, void *fh,
466                                   struct v4l2_ext_controls *a);
467         int (*vidioc_s_ext_ctrls)(struct file *file, void *fh,
468                                   struct v4l2_ext_controls *a);
469         int (*vidioc_try_ext_ctrls)(struct file *file, void *fh,
470                                     struct v4l2_ext_controls *a);
471         int (*vidioc_querymenu)(struct file *file, void *fh,
472                                 struct v4l2_querymenu *a);
473 
474         /* Audio ioctls */
475         int (*vidioc_enumaudio)(struct file *file, void *fh,
476                                 struct v4l2_audio *a);
477         int (*vidioc_g_audio)(struct file *file, void *fh,
478                               struct v4l2_audio *a);
479         int (*vidioc_s_audio)(struct file *file, void *fh,
480                               const struct v4l2_audio *a);
481 
482         /* Audio out ioctls */
483         int (*vidioc_enumaudout)(struct file *file, void *fh,
484                                  struct v4l2_audioout *a);
485         int (*vidioc_g_audout)(struct file *file, void *fh,
486                                struct v4l2_audioout *a);
487         int (*vidioc_s_audout)(struct file *file, void *fh,
488                                const struct v4l2_audioout *a);
489         int (*vidioc_g_modulator)(struct file *file, void *fh,
490                                   struct v4l2_modulator *a);
491         int (*vidioc_s_modulator)(struct file *file, void *fh,
492                                   const struct v4l2_modulator *a);
493         /* Crop ioctls */
494         int (*vidioc_cropcap)(struct file *file, void *fh,
495                               struct v4l2_cropcap *a);
496         int (*vidioc_g_crop)(struct file *file, void *fh,
497                              struct v4l2_crop *a);
498         int (*vidioc_s_crop)(struct file *file, void *fh,
499                              const struct v4l2_crop *a);
500         int (*vidioc_g_selection)(struct file *file, void *fh,
501                                   struct v4l2_selection *s);
502         int (*vidioc_s_selection)(struct file *file, void *fh,
503                                   struct v4l2_selection *s);
504         /* Compression ioctls */
505         int (*vidioc_g_jpegcomp)(struct file *file, void *fh,
506                                  struct v4l2_jpegcompression *a);
507         int (*vidioc_s_jpegcomp)(struct file *file, void *fh,
508                                  const struct v4l2_jpegcompression *a);
509         int (*vidioc_g_enc_index)(struct file *file, void *fh,
510                                   struct v4l2_enc_idx *a);
511         int (*vidioc_encoder_cmd)(struct file *file, void *fh,
512                                   struct v4l2_encoder_cmd *a);
513         int (*vidioc_try_encoder_cmd)(struct file *file, void *fh,
514                                       struct v4l2_encoder_cmd *a);
515         int (*vidioc_decoder_cmd)(struct file *file, void *fh,
516                                   struct v4l2_decoder_cmd *a);
517         int (*vidioc_try_decoder_cmd)(struct file *file, void *fh,
518                                       struct v4l2_decoder_cmd *a);
519 
520         /* Stream type-dependent parameter ioctls */
521         int (*vidioc_g_parm)(struct file *file, void *fh,
522                              struct v4l2_streamparm *a);
523         int (*vidioc_s_parm)(struct file *file, void *fh,
524                              struct v4l2_streamparm *a);
525 
526         /* Tuner ioctls */
527         int (*vidioc_g_tuner)(struct file *file, void *fh,
528                               struct v4l2_tuner *a);
529         int (*vidioc_s_tuner)(struct file *file, void *fh,
530                               const struct v4l2_tuner *a);
531         int (*vidioc_g_frequency)(struct file *file, void *fh,
532                                   struct v4l2_frequency *a);
533         int (*vidioc_s_frequency)(struct file *file, void *fh,
534                                   const struct v4l2_frequency *a);
535         int (*vidioc_enum_freq_bands)(struct file *file, void *fh,
536                                       struct v4l2_frequency_band *band);
537 
538         /* Sliced VBI cap */
539         int (*vidioc_g_sliced_vbi_cap)(struct file *file, void *fh,
540                                        struct v4l2_sliced_vbi_cap *a);
541 
542         /* Log status ioctl */
543         int (*vidioc_log_status)(struct file *file, void *fh);
544 
545         int (*vidioc_s_hw_freq_seek)(struct file *file, void *fh,
546                                      const struct v4l2_hw_freq_seek *a);
547 
548         /* Debugging ioctls */
549 #ifdef CONFIG_VIDEO_ADV_DEBUG
550         int (*vidioc_g_register)(struct file *file, void *fh,
551                                  struct v4l2_dbg_register *reg);
552         int (*vidioc_s_register)(struct file *file, void *fh,
553                                  const struct v4l2_dbg_register *reg);
554 
555         int (*vidioc_g_chip_info)(struct file *file, void *fh,
556                                   struct v4l2_dbg_chip_info *chip);
557 #endif
558 
559         int (*vidioc_enum_framesizes)(struct file *file, void *fh,
560                                       struct v4l2_frmsizeenum *fsize);
561 
562         int (*vidioc_enum_frameintervals)(struct file *file, void *fh,
563                                           struct v4l2_frmivalenum *fival);
564 
565         /* DV Timings IOCTLs */
566         int (*vidioc_s_dv_timings)(struct file *file, void *fh,
567                                    struct v4l2_dv_timings *timings);
568         int (*vidioc_g_dv_timings)(struct file *file, void *fh,
569                                    struct v4l2_dv_timings *timings);
570         int (*vidioc_query_dv_timings)(struct file *file, void *fh,
571                                        struct v4l2_dv_timings *timings);
572         int (*vidioc_enum_dv_timings)(struct file *file, void *fh,
573                                       struct v4l2_enum_dv_timings *timings);
574         int (*vidioc_dv_timings_cap)(struct file *file, void *fh,
575                                      struct v4l2_dv_timings_cap *cap);
576         int (*vidioc_g_edid)(struct file *file, void *fh,
577                              struct v4l2_edid *edid);
578         int (*vidioc_s_edid)(struct file *file, void *fh,
579                              struct v4l2_edid *edid);
580 
581         int (*vidioc_subscribe_event)(struct v4l2_fh *fh,
582                                       const struct v4l2_event_subscription *sub);
583         int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
584                                         const struct v4l2_event_subscription *sub);
585 
586         /* For other private ioctls */
587         long (*vidioc_default)(struct file *file, void *fh,
588                                bool valid_prio, unsigned int cmd, void *arg);
589 };
590 
591 
592 /* v4l debugging and diagnostics */
593 
594 /* Device debug flags to be used with the video device debug attribute */
595 
596 /* Just log the ioctl name + error code */
597 #define V4L2_DEV_DEBUG_IOCTL            0x01
598 /* Log the ioctl name arguments + error code */
599 #define V4L2_DEV_DEBUG_IOCTL_ARG        0x02
600 /* Log the file operations open, release, mmap and get_unmapped_area */
601 #define V4L2_DEV_DEBUG_FOP              0x04
602 /* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
603 #define V4L2_DEV_DEBUG_STREAMING        0x08
604 /* Log poll() */
605 #define V4L2_DEV_DEBUG_POLL             0x10
606 
607 /*  Video standard functions  */
608 
609 /**
610  * v4l2_norm_to_name - Ancillary routine to analog TV standard name from its ID.
611  *
612  * @id: analog TV standard ID.
613  *
614  * Return: returns a string with the name of the analog TV standard.
615  * If the standard is not found or if @id points to multiple standard,
616  * it returns "Unknown".
617  */
618 const char *v4l2_norm_to_name(v4l2_std_id id);
619 
620 /**
621  * v4l2_video_std_frame_period - Ancillary routine that fills a
622  *      struct &v4l2_fract pointer with the default framerate fraction.
623  *
624  * @id: analog TV standard ID.
625  * @frameperiod: struct &v4l2_fract pointer to be filled
626  *
627  */
628 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
629 
630 /**
631  * v4l2_video_std_construct - Ancillary routine that fills in the fields of
632  *      a &v4l2_standard structure according to the @id parameter.
633  *
634  * @vs: struct &v4l2_standard pointer to be filled
635  * @id: analog TV standard ID.
636  * @name: name of the standard to be used
637  *
638  * .. note::
639  *
640  *    This ancillary routine is obsolete. Shouldn't be used on newer drivers.
641  */
642 int v4l2_video_std_construct(struct v4l2_standard *vs,
643                                     int id, const char *name);
644 
645 /**
646  * v4l_video_std_enumstd - Ancillary routine that fills in the fields of
647  *      a &v4l2_standard structure according to the @id and @vs->index
648  *      parameters.
649  *
650  * @vs: struct &v4l2_standard pointer to be filled.
651  * @id: analog TV standard ID.
652  *
653  */
654 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id);
655 
656 /**
657  * v4l_printk_ioctl - Ancillary routine that prints the ioctl in a
658  *      human-readable format.
659  *
660  * @prefix: prefix to be added at the ioctl prints.
661  * @cmd: ioctl name
662  *
663  * .. note::
664  *
665  *    If prefix != %NULL, then it will issue a
666  *    ``printk(KERN_DEBUG "%s: ", prefix)`` first.
667  */
668 void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
669 
670 struct video_device;
671 
672 /* names for fancy debug output */
673 extern const char *v4l2_field_names[];
674 extern const char *v4l2_type_names[];
675 
676 #ifdef CONFIG_COMPAT
677 /**
678  * v4l2_compat_ioctl32 -32 Bits compatibility layer for 64 bits processors
679  *
680  * @file: Pointer to struct &file.
681  * @cmd: Ioctl name.
682  * @arg: Ioctl argument.
683  */
684 long int v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
685                              unsigned long arg);
686 #endif
687 
688 /**
689  * typedef v4l2_kioctl - Typedef used to pass an ioctl handler.
690  *
691  * @file: Pointer to struct &file.
692  * @cmd: Ioctl name.
693  * @arg: Ioctl argument.
694  */
695 typedef long (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg);
696 
697 /**
698  * video_usercopy - copies data from/to userspace memory when an ioctl is
699  *      issued.
700  *
701  * @file: Pointer to struct &file.
702  * @cmd: Ioctl name.
703  * @arg: Ioctl argument.
704  * @func: function that will handle the ioctl
705  *
706  * .. note::
707  *
708  *    This routine should be used only inside the V4L2 core.
709  */
710 long int video_usercopy(struct file *file, unsigned int cmd,
711                         unsigned long int arg, v4l2_kioctl func);
712 
713 /**
714  * video_ioctl2 - Handles a V4L2 ioctl.
715  *
716  * @file: Pointer to struct &file.
717  * @cmd: Ioctl name.
718  * @arg: Ioctl argument.
719  *
720  * Method used to hancle an ioctl. Should be used to fill the
721  * &v4l2_ioctl_ops.unlocked_ioctl on all V4L2 drivers.
722  */
723 long int video_ioctl2(struct file *file,
724                       unsigned int cmd, unsigned long int arg);
725 
726 #endif /* _V4L2_IOCTL_H */
727 

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