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 and multi 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 and multi plane mode
36  * @vidioc_enum_fmt_sdr_cap: pointer to the function that implements
37  *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
38  *	for Software Defined Radio capture
39  * @vidioc_enum_fmt_sdr_out: pointer to the function that implements
40  *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
41  *	for Software Defined Radio output
42  * @vidioc_enum_fmt_meta_cap: pointer to the function that implements
43  *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
44  *	for metadata capture
45  * @vidioc_enum_fmt_meta_out: pointer to the function that implements
46  *	:ref:`VIDIOC_ENUM_FMT <vidioc_enum_fmt>` ioctl logic
47  *	for metadata output
48  * @vidioc_g_fmt_vid_cap: pointer to the function that implements
49  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
50  *	in single plane mode
51  * @vidioc_g_fmt_vid_overlay: pointer to the function that implements
52  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay
53  * @vidioc_g_fmt_vid_out: pointer to the function that implements
54  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
55  *	in single plane mode
56  * @vidioc_g_fmt_vid_out_overlay: pointer to the function that implements
57  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
58  * @vidioc_g_fmt_vbi_cap: pointer to the function that implements
59  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
60  * @vidioc_g_fmt_vbi_out: pointer to the function that implements
61  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
62  * @vidioc_g_fmt_sliced_vbi_cap: pointer to the function that implements
63  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
64  * @vidioc_g_fmt_sliced_vbi_out: pointer to the function that implements
65  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
66  * @vidioc_g_fmt_vid_cap_mplane: pointer to the function that implements
67  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video capture
68  *	in multiple plane mode
69  * @vidioc_g_fmt_vid_out_mplane: pointer to the function that implements
70  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for video out
71  *	in multiplane plane mode
72  * @vidioc_g_fmt_sdr_cap: pointer to the function that implements
73  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
74  *	Radio capture
75  * @vidioc_g_fmt_sdr_out: pointer to the function that implements
76  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
77  *	Radio output
78  * @vidioc_g_fmt_meta_cap: pointer to the function that implements
79  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
80  * @vidioc_g_fmt_meta_out: pointer to the function that implements
81  *	:ref:`VIDIOC_G_FMT <vidioc_g_fmt>` ioctl logic for metadata output
82  * @vidioc_s_fmt_vid_cap: pointer to the function that implements
83  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
84  *	in single plane mode
85  * @vidioc_s_fmt_vid_overlay: pointer to the function that implements
86  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay
87  * @vidioc_s_fmt_vid_out: pointer to the function that implements
88  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
89  *	in single plane mode
90  * @vidioc_s_fmt_vid_out_overlay: pointer to the function that implements
91  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video overlay output
92  * @vidioc_s_fmt_vbi_cap: pointer to the function that implements
93  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
94  * @vidioc_s_fmt_vbi_out: pointer to the function that implements
95  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
96  * @vidioc_s_fmt_sliced_vbi_cap: pointer to the function that implements
97  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI capture
98  * @vidioc_s_fmt_sliced_vbi_out: pointer to the function that implements
99  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
100  * @vidioc_s_fmt_vid_cap_mplane: pointer to the function that implements
101  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video capture
102  *	in multiple plane mode
103  * @vidioc_s_fmt_vid_out_mplane: pointer to the function that implements
104  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for video out
105  *	in multiplane plane mode
106  * @vidioc_s_fmt_sdr_cap: pointer to the function that implements
107  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
108  *	Radio capture
109  * @vidioc_s_fmt_sdr_out: pointer to the function that implements
110  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
111  *	Radio output
112  * @vidioc_s_fmt_meta_cap: pointer to the function that implements
113  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
114  * @vidioc_s_fmt_meta_out: pointer to the function that implements
115  *	:ref:`VIDIOC_S_FMT <vidioc_g_fmt>` ioctl logic for metadata output
116  * @vidioc_try_fmt_vid_cap: pointer to the function that implements
117  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
118  *	in single plane mode
119  * @vidioc_try_fmt_vid_overlay: pointer to the function that implements
120  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
121  * @vidioc_try_fmt_vid_out: pointer to the function that implements
122  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
123  *	in single plane mode
124  * @vidioc_try_fmt_vid_out_overlay: pointer to the function that implements
125  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video overlay
126  *	output
127  * @vidioc_try_fmt_vbi_cap: pointer to the function that implements
128  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI capture
129  * @vidioc_try_fmt_vbi_out: pointer to the function that implements
130  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for raw VBI output
131  * @vidioc_try_fmt_sliced_vbi_cap: pointer to the function that implements
132  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI
133  *	capture
134  * @vidioc_try_fmt_sliced_vbi_out: pointer to the function that implements
135  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for sliced VBI output
136  * @vidioc_try_fmt_vid_cap_mplane: pointer to the function that implements
137  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video capture
138  *	in multiple plane mode
139  * @vidioc_try_fmt_vid_out_mplane: pointer to the function that implements
140  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for video out
141  *	in multiplane plane mode
142  * @vidioc_try_fmt_sdr_cap: pointer to the function that implements
143  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
144  *	Radio capture
145  * @vidioc_try_fmt_sdr_out: pointer to the function that implements
146  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for Software Defined
147  *	Radio output
148  * @vidioc_try_fmt_meta_cap: pointer to the function that implements
149  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for metadata capture
150  * @vidioc_try_fmt_meta_out: pointer to the function that implements
151  *	:ref:`VIDIOC_TRY_FMT <vidioc_g_fmt>` ioctl logic for metadata output
152  * @vidioc_reqbufs: pointer to the function that implements
153  *	:ref:`VIDIOC_REQBUFS <vidioc_reqbufs>` ioctl
154  * @vidioc_querybuf: pointer to the function that implements
155  *	:ref:`VIDIOC_QUERYBUF <vidioc_querybuf>` ioctl
156  * @vidioc_qbuf: pointer to the function that implements
157  *	:ref:`VIDIOC_QBUF <vidioc_qbuf>` ioctl
158  * @vidioc_expbuf: pointer to the function that implements
159  *	:ref:`VIDIOC_EXPBUF <vidioc_expbuf>` ioctl
160  * @vidioc_dqbuf: pointer to the function that implements
161  *	:ref:`VIDIOC_DQBUF <vidioc_qbuf>` ioctl
162  * @vidioc_create_bufs: pointer to the function that implements
163  *	:ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
164  * @vidioc_prepare_buf: pointer to the function that implements
165  *	:ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
166  * @vidioc_overlay: pointer to the function that implements
167  *	:ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
168  * @vidioc_g_fbuf: pointer to the function that implements
169  *	:ref:`VIDIOC_G_FBUF <vidioc_g_fbuf>` ioctl
170  * @vidioc_s_fbuf: pointer to the function that implements
171  *	:ref:`VIDIOC_S_FBUF <vidioc_g_fbuf>` ioctl
172  * @vidioc_streamon: pointer to the function that implements
173  *	:ref:`VIDIOC_STREAMON <vidioc_streamon>` ioctl
174  * @vidioc_streamoff: pointer to the function that implements
175  *	:ref:`VIDIOC_STREAMOFF <vidioc_streamon>` ioctl
176  * @vidioc_g_std: pointer to the function that implements
177  *	:ref:`VIDIOC_G_STD <vidioc_g_std>` ioctl
178  * @vidioc_s_std: pointer to the function that implements
179  *	:ref:`VIDIOC_S_STD <vidioc_g_std>` ioctl
180  * @vidioc_querystd: pointer to the function that implements
181  *	:ref:`VIDIOC_QUERYSTD <vidioc_querystd>` ioctl
182  * @vidioc_enum_input: pointer to the function that implements
183  *	:ref:`VIDIOC_ENUM_INPUT <vidioc_g_input>` ioctl
184  * @vidioc_g_input: pointer to the function that implements
185  *	:ref:`VIDIOC_G_INPUT <vidioc_g_input>` ioctl
186  * @vidioc_s_input: pointer to the function that implements
187  *	:ref:`VIDIOC_S_INPUT <vidioc_g_input>` ioctl
188  * @vidioc_enum_output: pointer to the function that implements
189  *	:ref:`VIDIOC_ENUM_OUTPUT <vidioc_g_output>` ioctl
190  * @vidioc_g_output: pointer to the function that implements
191  *	:ref:`VIDIOC_G_OUTPUT <vidioc_g_output>` ioctl
192  * @vidioc_s_output: pointer to the function that implements
193  *	:ref:`VIDIOC_S_OUTPUT <vidioc_g_output>` ioctl
194  * @vidioc_queryctrl: pointer to the function that implements
195  *	:ref:`VIDIOC_QUERYCTRL <vidioc_queryctrl>` ioctl
196  * @vidioc_query_ext_ctrl: pointer to the function that implements
197  *	:ref:`VIDIOC_QUERY_EXT_CTRL <vidioc_queryctrl>` ioctl
198  * @vidioc_g_ctrl: pointer to the function that implements
199  *	:ref:`VIDIOC_G_CTRL <vidioc_g_ctrl>` ioctl
200  * @vidioc_s_ctrl: pointer to the function that implements
201  *	:ref:`VIDIOC_S_CTRL <vidioc_g_ctrl>` ioctl
202  * @vidioc_g_ext_ctrls: pointer to the function that implements
203  *	:ref:`VIDIOC_G_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
204  * @vidioc_s_ext_ctrls: pointer to the function that implements
205  *	:ref:`VIDIOC_S_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
206  * @vidioc_try_ext_ctrls: pointer to the function that implements
207  *	:ref:`VIDIOC_TRY_EXT_CTRLS <vidioc_g_ext_ctrls>` ioctl
208  * @vidioc_querymenu: pointer to the function that implements
209  *	:ref:`VIDIOC_QUERYMENU <vidioc_queryctrl>` ioctl
210  * @vidioc_enumaudio: pointer to the function that implements
211  *	:ref:`VIDIOC_ENUMAUDIO <vidioc_enumaudio>` ioctl
212  * @vidioc_g_audio: pointer to the function that implements
213  *	:ref:`VIDIOC_G_AUDIO <vidioc_g_audio>` ioctl
214  * @vidioc_s_audio: pointer to the function that implements
215  *	:ref:`VIDIOC_S_AUDIO <vidioc_g_audio>` ioctl
216  * @vidioc_enumaudout: pointer to the function that implements
217  *	:ref:`VIDIOC_ENUMAUDOUT <vidioc_enumaudout>` ioctl
218  * @vidioc_g_audout: pointer to the function that implements
219  *	:ref:`VIDIOC_G_AUDOUT <vidioc_g_audout>` ioctl
220  * @vidioc_s_audout: pointer to the function that implements
221  *	:ref:`VIDIOC_S_AUDOUT <vidioc_g_audout>` ioctl
222  * @vidioc_g_modulator: pointer to the function that implements
223  *	:ref:`VIDIOC_G_MODULATOR <vidioc_g_modulator>` ioctl
224  * @vidioc_s_modulator: pointer to the function that implements
225  *	:ref:`VIDIOC_S_MODULATOR <vidioc_g_modulator>` ioctl
226  * @vidioc_g_pixelaspect: pointer to the function that implements
227  *	the pixelaspect part of the :ref:`VIDIOC_CROPCAP <vidioc_cropcap>` ioctl
228  * @vidioc_g_selection: pointer to the function that implements
229  *	:ref:`VIDIOC_G_SELECTION <vidioc_g_selection>` ioctl
230  * @vidioc_s_selection: pointer to the function that implements
231  *	:ref:`VIDIOC_S_SELECTION <vidioc_g_selection>` ioctl
232  * @vidioc_g_jpegcomp: pointer to the function that implements
233  *	:ref:`VIDIOC_G_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
234  * @vidioc_s_jpegcomp: pointer to the function that implements
235  *	:ref:`VIDIOC_S_JPEGCOMP <vidioc_g_jpegcomp>` ioctl
236  * @vidioc_g_enc_index: pointer to the function that implements
237  *	:ref:`VIDIOC_G_ENC_INDEX <vidioc_g_enc_index>` ioctl
238  * @vidioc_encoder_cmd: pointer to the function that implements
239  *	:ref:`VIDIOC_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
240  * @vidioc_try_encoder_cmd: pointer to the function that implements
241  *	:ref:`VIDIOC_TRY_ENCODER_CMD <vidioc_encoder_cmd>` ioctl
242  * @vidioc_decoder_cmd: pointer to the function that implements
243  *	:ref:`VIDIOC_DECODER_CMD <vidioc_decoder_cmd>` ioctl
244  * @vidioc_try_decoder_cmd: pointer to the function that implements
245  *	:ref:`VIDIOC_TRY_DECODER_CMD <vidioc_decoder_cmd>` ioctl
246  * @vidioc_g_parm: pointer to the function that implements
247  *	:ref:`VIDIOC_G_PARM <vidioc_g_parm>` ioctl
248  * @vidioc_s_parm: pointer to the function that implements
249  *	:ref:`VIDIOC_S_PARM <vidioc_g_parm>` ioctl
250  * @vidioc_g_tuner: pointer to the function that implements
251  *	:ref:`VIDIOC_G_TUNER <vidioc_g_tuner>` ioctl
252  * @vidioc_s_tuner: pointer to the function that implements
253  *	:ref:`VIDIOC_S_TUNER <vidioc_g_tuner>` ioctl
254  * @vidioc_g_frequency: pointer to the function that implements
255  *	:ref:`VIDIOC_G_FREQUENCY <vidioc_g_frequency>` ioctl
256  * @vidioc_s_frequency: pointer to the function that implements
257  *	:ref:`VIDIOC_S_FREQUENCY <vidioc_g_frequency>` ioctl
258  * @vidioc_enum_freq_bands: pointer to the function that implements
259  *	:ref:`VIDIOC_ENUM_FREQ_BANDS <vidioc_enum_freq_bands>` ioctl
260  * @vidioc_g_sliced_vbi_cap: pointer to the function that implements
261  *	:ref:`VIDIOC_G_SLICED_VBI_CAP <vidioc_g_sliced_vbi_cap>` ioctl
262  * @vidioc_log_status: pointer to the function that implements
263  *	:ref:`VIDIOC_LOG_STATUS <vidioc_log_status>` ioctl
264  * @vidioc_s_hw_freq_seek: pointer to the function that implements
265  *	:ref:`VIDIOC_S_HW_FREQ_SEEK <vidioc_s_hw_freq_seek>` ioctl
266  * @vidioc_g_register: pointer to the function that implements
267  *	:ref:`VIDIOC_DBG_G_REGISTER <vidioc_dbg_g_register>` ioctl
268  * @vidioc_s_register: pointer to the function that implements
269  *	:ref:`VIDIOC_DBG_S_REGISTER <vidioc_dbg_g_register>` ioctl
270  * @vidioc_g_chip_info: pointer to the function that implements
271  *	:ref:`VIDIOC_DBG_G_CHIP_INFO <vidioc_dbg_g_chip_info>` ioctl
272  * @vidioc_enum_framesizes: pointer to the function that implements
273  *	:ref:`VIDIOC_ENUM_FRAMESIZES <vidioc_enum_framesizes>` ioctl
274  * @vidioc_enum_frameintervals: pointer to the function that implements
275  *	:ref:`VIDIOC_ENUM_FRAMEINTERVALS <vidioc_enum_frameintervals>` ioctl
276  * @vidioc_s_dv_timings: pointer to the function that implements
277  *	:ref:`VIDIOC_S_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
278  * @vidioc_g_dv_timings: pointer to the function that implements
279  *	:ref:`VIDIOC_G_DV_TIMINGS <vidioc_g_dv_timings>` ioctl
280  * @vidioc_query_dv_timings: pointer to the function that implements
281  *	:ref:`VIDIOC_QUERY_DV_TIMINGS <vidioc_query_dv_timings>` ioctl
282  * @vidioc_enum_dv_timings: pointer to the function that implements
283  *	:ref:`VIDIOC_ENUM_DV_TIMINGS <vidioc_enum_dv_timings>` ioctl
284  * @vidioc_dv_timings_cap: pointer to the function that implements
285  *	:ref:`VIDIOC_DV_TIMINGS_CAP <vidioc_dv_timings_cap>` ioctl
286  * @vidioc_g_edid: pointer to the function that implements
287  *	:ref:`VIDIOC_G_EDID <vidioc_g_edid>` ioctl
288  * @vidioc_s_edid: pointer to the function that implements
289  *	:ref:`VIDIOC_S_EDID <vidioc_g_edid>` ioctl
290  * @vidioc_subscribe_event: pointer to the function that implements
291  *	:ref:`VIDIOC_SUBSCRIBE_EVENT <vidioc_subscribe_event>` ioctl
292  * @vidioc_unsubscribe_event: pointer to the function that implements
293  *	:ref:`VIDIOC_UNSUBSCRIBE_EVENT <vidioc_unsubscribe_event>` ioctl
294  * @vidioc_default: pointed used to allow other ioctls
295  */
296 struct v4l2_ioctl_ops {
297 	/* ioctl callbacks */
298 
299 	/* VIDIOC_QUERYCAP handler */
300 	int (*vidioc_querycap)(struct file *file, void *fh,
301 			       struct v4l2_capability *cap);
302 
303 	/* VIDIOC_ENUM_FMT handlers */
304 	int (*vidioc_enum_fmt_vid_cap)(struct file *file, void *fh,
305 				       struct v4l2_fmtdesc *f);
306 	int (*vidioc_enum_fmt_vid_overlay)(struct file *file, void *fh,
307 					   struct v4l2_fmtdesc *f);
308 	int (*vidioc_enum_fmt_vid_out)(struct file *file, void *fh,
309 				       struct v4l2_fmtdesc *f);
310 	int (*vidioc_enum_fmt_sdr_cap)(struct file *file, void *fh,
311 				       struct v4l2_fmtdesc *f);
312 	int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh,
313 				       struct v4l2_fmtdesc *f);
314 	int (*vidioc_enum_fmt_meta_cap)(struct file *file, void *fh,
315 					struct v4l2_fmtdesc *f);
316 	int (*vidioc_enum_fmt_meta_out)(struct file *file, void *fh,
317 					struct v4l2_fmtdesc *f);
318 
319 	/* VIDIOC_G_FMT handlers */
320 	int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
321 				    struct v4l2_format *f);
322 	int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
323 					struct v4l2_format *f);
324 	int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
325 				    struct v4l2_format *f);
326 	int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
327 					    struct v4l2_format *f);
328 	int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
329 				    struct v4l2_format *f);
330 	int (*vidioc_g_fmt_vbi_out)(struct file *file, void *fh,
331 				    struct v4l2_format *f);
332 	int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
333 					   struct v4l2_format *f);
334 	int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
335 					   struct v4l2_format *f);
336 	int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
337 					   struct v4l2_format *f);
338 	int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
339 					   struct v4l2_format *f);
340 	int (*vidioc_g_fmt_sdr_cap)(struct file *file, void *fh,
341 				    struct v4l2_format *f);
342 	int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh,
343 				    struct v4l2_format *f);
344 	int (*vidioc_g_fmt_meta_cap)(struct file *file, void *fh,
345 				     struct v4l2_format *f);
346 	int (*vidioc_g_fmt_meta_out)(struct file *file, void *fh,
347 				     struct v4l2_format *f);
348 
349 	/* VIDIOC_S_FMT handlers */
350 	int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
351 				    struct v4l2_format *f);
352 	int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
353 					struct v4l2_format *f);
354 	int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
355 				    struct v4l2_format *f);
356 	int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
357 					    struct v4l2_format *f);
358 	int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
359 				    struct v4l2_format *f);
360 	int (*vidioc_s_fmt_vbi_out)(struct file *file, void *fh,
361 				    struct v4l2_format *f);
362 	int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
363 					   struct v4l2_format *f);
364 	int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
365 					   struct v4l2_format *f);
366 	int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
367 					   struct v4l2_format *f);
368 	int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
369 					   struct v4l2_format *f);
370 	int (*vidioc_s_fmt_sdr_cap)(struct file *file, void *fh,
371 				    struct v4l2_format *f);
372 	int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh,
373 				    struct v4l2_format *f);
374 	int (*vidioc_s_fmt_meta_cap)(struct file *file, void *fh,
375 				     struct v4l2_format *f);
376 	int (*vidioc_s_fmt_meta_out)(struct file *file, void *fh,
377 				     struct v4l2_format *f);
378 
379 	/* VIDIOC_TRY_FMT handlers */
380 	int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
381 				      struct v4l2_format *f);
382 	int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
383 					  struct v4l2_format *f);
384 	int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
385 				      struct v4l2_format *f);
386 	int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
387 					     struct v4l2_format *f);
388 	int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
389 				      struct v4l2_format *f);
390 	int (*vidioc_try_fmt_vbi_out)(struct file *file, void *fh,
391 				      struct v4l2_format *f);
392 	int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
393 					     struct v4l2_format *f);
394 	int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
395 					     struct v4l2_format *f);
396 	int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
397 					     struct v4l2_format *f);
398 	int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
399 					     struct v4l2_format *f);
400 	int (*vidioc_try_fmt_sdr_cap)(struct file *file, void *fh,
401 				      struct v4l2_format *f);
402 	int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh,
403 				      struct v4l2_format *f);
404 	int (*vidioc_try_fmt_meta_cap)(struct file *file, void *fh,
405 				       struct v4l2_format *f);
406 	int (*vidioc_try_fmt_meta_out)(struct file *file, void *fh,
407 				       struct v4l2_format *f);
408 
409 	/* Buffer handlers */
410 	int (*vidioc_reqbufs)(struct file *file, void *fh,
411 			      struct v4l2_requestbuffers *b);
412 	int (*vidioc_querybuf)(struct file *file, void *fh,
413 			       struct v4l2_buffer *b);
414 	int (*vidioc_qbuf)(struct file *file, void *fh,
415 			   struct v4l2_buffer *b);
416 	int (*vidioc_expbuf)(struct file *file, void *fh,
417 			     struct v4l2_exportbuffer *e);
418 	int (*vidioc_dqbuf)(struct file *file, void *fh,
419 			    struct v4l2_buffer *b);
420 
421 	int (*vidioc_create_bufs)(struct file *file, void *fh,
422 				  struct v4l2_create_buffers *b);
423 	int (*vidioc_prepare_buf)(struct file *file, void *fh,
424 				  struct v4l2_buffer *b);
425 
426 	int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
427 	int (*vidioc_g_fbuf)(struct file *file, void *fh,
428 			     struct v4l2_framebuffer *a);
429 	int (*vidioc_s_fbuf)(struct file *file, void *fh,
430 			     const struct v4l2_framebuffer *a);
431 
432 		/* Stream on/off */
433 	int (*vidioc_streamon)(struct file *file, void *fh,
434 			       enum v4l2_buf_type i);
435 	int (*vidioc_streamoff)(struct file *file, void *fh,
436 				enum v4l2_buf_type i);
437 
438 		/*
439 		 * Standard handling
440 		 *
441 		 * Note: ENUMSTD is handled by videodev.c
442 		 */
443 	int (*vidioc_g_std)(struct file *file, void *fh, v4l2_std_id *norm);
444 	int (*vidioc_s_std)(struct file *file, void *fh, v4l2_std_id norm);
445 	int (*vidioc_querystd)(struct file *file, void *fh, v4l2_std_id *a);
446 
447 		/* Input handling */
448 	int (*vidioc_enum_input)(struct file *file, void *fh,
449 				 struct v4l2_input *inp);
450 	int (*vidioc_g_input)(struct file *file, void *fh, unsigned int *i);
451 	int (*vidioc_s_input)(struct file *file, void *fh, unsigned int i);
452 
453 		/* Output handling */
454 	int (*vidioc_enum_output)(struct file *file, void *fh,
455 				  struct v4l2_output *a);
456 	int (*vidioc_g_output)(struct file *file, void *fh, unsigned int *i);
457 	int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);
458 
459 		/* Control handling */
460 	int (*vidioc_queryctrl)(struct file *file, void *fh,
461 				struct v4l2_queryctrl *a);
462 	int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
463 				     struct v4l2_query_ext_ctrl *a);
464 	int (*vidioc_g_ctrl)(struct file *file, void *fh,
465 			     struct v4l2_control *a);
466 	int (*vidioc_s_ctrl)(struct file *file, void *fh,
467 			     struct v4l2_control *a);
468 	int (*vidioc_g_ext_ctrls)(struct file *file, void *fh,
469 				  struct v4l2_ext_controls *a);
470 	int (*vidioc_s_ext_ctrls)(struct file *file, void *fh,
471 				  struct v4l2_ext_controls *a);
472 	int (*vidioc_try_ext_ctrls)(struct file *file, void *fh,
473 				    struct v4l2_ext_controls *a);
474 	int (*vidioc_querymenu)(struct file *file, void *fh,
475 				struct v4l2_querymenu *a);
476 
477 	/* Audio ioctls */
478 	int (*vidioc_enumaudio)(struct file *file, void *fh,
479 				struct v4l2_audio *a);
480 	int (*vidioc_g_audio)(struct file *file, void *fh,
481 			      struct v4l2_audio *a);
482 	int (*vidioc_s_audio)(struct file *file, void *fh,
483 			      const struct v4l2_audio *a);
484 
485 	/* Audio out ioctls */
486 	int (*vidioc_enumaudout)(struct file *file, void *fh,
487 				 struct v4l2_audioout *a);
488 	int (*vidioc_g_audout)(struct file *file, void *fh,
489 			       struct v4l2_audioout *a);
490 	int (*vidioc_s_audout)(struct file *file, void *fh,
491 			       const struct v4l2_audioout *a);
492 	int (*vidioc_g_modulator)(struct file *file, void *fh,
493 				  struct v4l2_modulator *a);
494 	int (*vidioc_s_modulator)(struct file *file, void *fh,
495 				  const struct v4l2_modulator *a);
496 	/* Crop ioctls */
497 	int (*vidioc_g_pixelaspect)(struct file *file, void *fh,
498 				    int buf_type, struct v4l2_fract *aspect);
499 	int (*vidioc_g_selection)(struct file *file, void *fh,
500 				  struct v4l2_selection *s);
501 	int (*vidioc_s_selection)(struct file *file, void *fh,
502 				  struct v4l2_selection *s);
503 	/* Compression ioctls */
504 	int (*vidioc_g_jpegcomp)(struct file *file, void *fh,
505 				 struct v4l2_jpegcompression *a);
506 	int (*vidioc_s_jpegcomp)(struct file *file, void *fh,
507 				 const struct v4l2_jpegcompression *a);
508 	int (*vidioc_g_enc_index)(struct file *file, void *fh,
509 				  struct v4l2_enc_idx *a);
510 	int (*vidioc_encoder_cmd)(struct file *file, void *fh,
511 				  struct v4l2_encoder_cmd *a);
512 	int (*vidioc_try_encoder_cmd)(struct file *file, void *fh,
513 				      struct v4l2_encoder_cmd *a);
514 	int (*vidioc_decoder_cmd)(struct file *file, void *fh,
515 				  struct v4l2_decoder_cmd *a);
516 	int (*vidioc_try_decoder_cmd)(struct file *file, void *fh,
517 				      struct v4l2_decoder_cmd *a);
518 
519 	/* Stream type-dependent parameter ioctls */
520 	int (*vidioc_g_parm)(struct file *file, void *fh,
521 			     struct v4l2_streamparm *a);
522 	int (*vidioc_s_parm)(struct file *file, void *fh,
523 			     struct v4l2_streamparm *a);
524 
525 	/* Tuner ioctls */
526 	int (*vidioc_g_tuner)(struct file *file, void *fh,
527 			      struct v4l2_tuner *a);
528 	int (*vidioc_s_tuner)(struct file *file, void *fh,
529 			      const struct v4l2_tuner *a);
530 	int (*vidioc_g_frequency)(struct file *file, void *fh,
531 				  struct v4l2_frequency *a);
532 	int (*vidioc_s_frequency)(struct file *file, void *fh,
533 				  const struct v4l2_frequency *a);
534 	int (*vidioc_enum_freq_bands)(struct file *file, void *fh,
535 				      struct v4l2_frequency_band *band);
536 
537 	/* Sliced VBI cap */
538 	int (*vidioc_g_sliced_vbi_cap)(struct file *file, void *fh,
539 				       struct v4l2_sliced_vbi_cap *a);
540 
541 	/* Log status ioctl */
542 	int (*vidioc_log_status)(struct file *file, void *fh);
543 
544 	int (*vidioc_s_hw_freq_seek)(struct file *file, void *fh,
545 				     const struct v4l2_hw_freq_seek *a);
546 
547 	/* Debugging ioctls */
548 #ifdef CONFIG_VIDEO_ADV_DEBUG
549 	int (*vidioc_g_register)(struct file *file, void *fh,
550 				 struct v4l2_dbg_register *reg);
551 	int (*vidioc_s_register)(struct file *file, void *fh,
552 				 const struct v4l2_dbg_register *reg);
553 
554 	int (*vidioc_g_chip_info)(struct file *file, void *fh,
555 				  struct v4l2_dbg_chip_info *chip);
556 #endif
557 
558 	int (*vidioc_enum_framesizes)(struct file *file, void *fh,
559 				      struct v4l2_frmsizeenum *fsize);
560 
561 	int (*vidioc_enum_frameintervals)(struct file *file, void *fh,
562 					  struct v4l2_frmivalenum *fival);
563 
564 	/* DV Timings IOCTLs */
565 	int (*vidioc_s_dv_timings)(struct file *file, void *fh,
566 				   struct v4l2_dv_timings *timings);
567 	int (*vidioc_g_dv_timings)(struct file *file, void *fh,
568 				   struct v4l2_dv_timings *timings);
569 	int (*vidioc_query_dv_timings)(struct file *file, void *fh,
570 				       struct v4l2_dv_timings *timings);
571 	int (*vidioc_enum_dv_timings)(struct file *file, void *fh,
572 				      struct v4l2_enum_dv_timings *timings);
573 	int (*vidioc_dv_timings_cap)(struct file *file, void *fh,
574 				     struct v4l2_dv_timings_cap *cap);
575 	int (*vidioc_g_edid)(struct file *file, void *fh,
576 			     struct v4l2_edid *edid);
577 	int (*vidioc_s_edid)(struct file *file, void *fh,
578 			     struct v4l2_edid *edid);
579 
580 	int (*vidioc_subscribe_event)(struct v4l2_fh *fh,
581 				      const struct v4l2_event_subscription *sub);
582 	int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
583 					const struct v4l2_event_subscription *sub);
584 
585 	/* For other private ioctls */
586 	long (*vidioc_default)(struct file *file, void *fh,
587 			       bool valid_prio, unsigned int cmd, void *arg);
588 };
589 
590 
591 /* v4l debugging and diagnostics */
592 
593 /* Device debug flags to be used with the video device debug attribute */
594 
595 /* Just log the ioctl name + error code */
596 #define V4L2_DEV_DEBUG_IOCTL		0x01
597 /* Log the ioctl name arguments + error code */
598 #define V4L2_DEV_DEBUG_IOCTL_ARG	0x02
599 /* Log the file operations open, release, mmap and get_unmapped_area */
600 #define V4L2_DEV_DEBUG_FOP		0x04
601 /* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
602 #define V4L2_DEV_DEBUG_STREAMING	0x08
603 /* Log poll() */
604 #define V4L2_DEV_DEBUG_POLL		0x10
605 /* Log controls */
606 #define V4L2_DEV_DEBUG_CTRL		0x20
607 
608 /*  Video standard functions  */
609 
610 /**
611  * v4l2_norm_to_name - Ancillary routine to analog TV standard name from its ID.
612  *
613  * @id:	analog TV standard ID.
614  *
615  * Return: returns a string with the name of the analog TV standard.
616  * If the standard is not found or if @id points to multiple standard,
617  * it returns "Unknown".
618  */
619 const char *v4l2_norm_to_name(v4l2_std_id id);
620 
621 /**
622  * v4l2_video_std_frame_period - Ancillary routine that fills a
623  *	struct &v4l2_fract pointer with the default framerate fraction.
624  *
625  * @id: analog TV standard ID.
626  * @frameperiod: struct &v4l2_fract pointer to be filled
627  *
628  */
629 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
630 
631 /**
632  * v4l2_video_std_construct - Ancillary routine that fills in the fields of
633  *	a &v4l2_standard structure according to the @id parameter.
634  *
635  * @vs: struct &v4l2_standard pointer to be filled
636  * @id: analog TV standard ID.
637  * @name: name of the standard to be used
638  *
639  * .. note::
640  *
641  *    This ancillary routine is obsolete. Shouldn't be used on newer drivers.
642  */
643 int v4l2_video_std_construct(struct v4l2_standard *vs,
644 				    int id, const char *name);
645 
646 /**
647  * v4l_video_std_enumstd - Ancillary routine that fills in the fields of
648  *	a &v4l2_standard structure according to the @id and @vs->index
649  *	parameters.
650  *
651  * @vs: struct &v4l2_standard pointer to be filled.
652  * @id: analog TV standard ID.
653  *
654  */
655 int v4l_video_std_enumstd(struct v4l2_standard *vs, v4l2_std_id id);
656 
657 /**
658  * v4l_printk_ioctl - Ancillary routine that prints the ioctl in a
659  *	human-readable format.
660  *
661  * @prefix: prefix to be added at the ioctl prints.
662  * @cmd: ioctl name
663  *
664  * .. note::
665  *
666  *    If prefix != %NULL, then it will issue a
667  *    ``printk(KERN_DEBUG "%s: ", prefix)`` first.
668  */
669 void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
670 
671 struct video_device;
672 
673 /* names for fancy debug output */
674 extern const char *v4l2_field_names[];
675 extern const char *v4l2_type_names[];
676 
677 #ifdef CONFIG_COMPAT
678 /**
679  * v4l2_compat_ioctl32 -32 Bits compatibility layer for 64 bits processors
680  *
681  * @file: Pointer to struct &file.
682  * @cmd: Ioctl name.
683  * @arg: Ioctl argument.
684  */
685 long int v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
686 			     unsigned long arg);
687 #endif
688 
689 unsigned int v4l2_compat_translate_cmd(unsigned int cmd);
690 int v4l2_compat_get_user(void __user *arg, void *parg, unsigned int cmd);
691 int v4l2_compat_put_user(void __user *arg, void *parg, unsigned int cmd);
692 int v4l2_compat_get_array_args(struct file *file, void *mbuf,
693 			       void __user *user_ptr, size_t array_size,
694 			       unsigned int cmd, void *arg);
695 int v4l2_compat_put_array_args(struct file *file, void __user *user_ptr,
696 			       void *mbuf, size_t array_size,
697 			       unsigned int cmd, void *arg);
698 
699 /**
700  * typedef v4l2_kioctl - Typedef used to pass an ioctl handler.
701  *
702  * @file: Pointer to struct &file.
703  * @cmd: Ioctl name.
704  * @arg: Ioctl argument.
705  */
706 typedef long (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg);
707 
708 /**
709  * video_usercopy - copies data from/to userspace memory when an ioctl is
710  *	issued.
711  *
712  * @file: Pointer to struct &file.
713  * @cmd: Ioctl name.
714  * @arg: Ioctl argument.
715  * @func: function that will handle the ioctl
716  *
717  * .. note::
718  *
719  *    This routine should be used only inside the V4L2 core.
720  */
721 long int video_usercopy(struct file *file, unsigned int cmd,
722 			unsigned long int arg, v4l2_kioctl func);
723 
724 /**
725  * video_ioctl2 - Handles a V4L2 ioctl.
726  *
727  * @file: Pointer to struct &file.
728  * @cmd: Ioctl name.
729  * @arg: Ioctl argument.
730  *
731  * Method used to hancle an ioctl. Should be used to fill the
732  * &v4l2_ioctl_ops.unlocked_ioctl on all V4L2 drivers.
733  */
734 long int video_ioctl2(struct file *file,
735 		      unsigned int cmd, unsigned long int arg);
736 
737 /*
738  * The user space interpretation of the 'v4l2_event' differs
739  * based on the 'time_t' definition on 32-bit architectures, so
740  * the kernel has to handle both.
741  * This is the old version for 32-bit architectures.
742  */
743 struct v4l2_event_time32 {
744 	__u32				type;
745 	union {
746 		struct v4l2_event_vsync		vsync;
747 		struct v4l2_event_ctrl		ctrl;
748 		struct v4l2_event_frame_sync	frame_sync;
749 		struct v4l2_event_src_change	src_change;
750 		struct v4l2_event_motion_det	motion_det;
751 		__u8				data[64];
752 	} u;
753 	__u32				pending;
754 	__u32				sequence;
755 	struct old_timespec32		timestamp;
756 	__u32				id;
757 	__u32				reserved[8];
758 };
759 
760 #define	VIDIOC_DQEVENT_TIME32	 _IOR('V', 89, struct v4l2_event_time32)
761 
762 struct v4l2_buffer_time32 {
763 	__u32			index;
764 	__u32			type;
765 	__u32			bytesused;
766 	__u32			flags;
767 	__u32			field;
768 	struct old_timeval32	timestamp;
769 	struct v4l2_timecode	timecode;
770 	__u32			sequence;
771 
772 	/* memory location */
773 	__u32			memory;
774 	union {
775 		__u32           offset;
776 		unsigned long   userptr;
777 		struct v4l2_plane *planes;
778 		__s32		fd;
779 	} m;
780 	__u32			length;
781 	__u32			reserved2;
782 	union {
783 		__s32		request_fd;
784 		__u32		reserved;
785 	};
786 };
787 #define VIDIOC_QUERYBUF_TIME32	_IOWR('V',  9, struct v4l2_buffer_time32)
788 #define VIDIOC_QBUF_TIME32	_IOWR('V', 15, struct v4l2_buffer_time32)
789 #define VIDIOC_DQBUF_TIME32	_IOWR('V', 17, struct v4l2_buffer_time32)
790 #define VIDIOC_PREPARE_BUF_TIME32 _IOWR('V', 93, struct v4l2_buffer_time32)
791 
792 #endif /* _V4L2_IOCTL_H */
793