3 * V 4 L 2 D R I V E R H E L P E R A P I
5 * Moved from videodev2.h
7 * Some commonly needed functions for drivers (v4l2-common.o module)
12 #include <linux/poll.h>
14 #include <linux/device.h>
15 #include <linux/mutex.h>
16 #include <linux/compiler.h> /* need __user */
17 #include <linux/videodev2.h>
21 struct v4l2_ioctl_ops {
24 /* VIDIOC_QUERYCAP handler */
25 int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
27 /* Priority handling */
28 int (*vidioc_g_priority) (struct file *file, void *fh,
29 enum v4l2_priority *p);
30 int (*vidioc_s_priority) (struct file *file, void *fh,
31 enum v4l2_priority p);
33 /* VIDIOC_ENUM_FMT handlers */
34 int (*vidioc_enum_fmt_vid_cap) (struct file *file, void *fh,
35 struct v4l2_fmtdesc *f);
36 int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
37 struct v4l2_fmtdesc *f);
38 int (*vidioc_enum_fmt_vid_out) (struct file *file, void *fh,
39 struct v4l2_fmtdesc *f);
40 int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
41 struct v4l2_fmtdesc *f);
42 int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
43 struct v4l2_fmtdesc *f);
44 int (*vidioc_enum_fmt_type_private)(struct file *file, void *fh,
45 struct v4l2_fmtdesc *f);
47 /* VIDIOC_G_FMT handlers */
48 int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh,
49 struct v4l2_format *f);
50 int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
51 struct v4l2_format *f);
52 int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh,
53 struct v4l2_format *f);
54 int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
55 struct v4l2_format *f);
56 int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh,
57 struct v4l2_format *f);
58 int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh,
59 struct v4l2_format *f);
60 int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
61 struct v4l2_format *f);
62 int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
63 struct v4l2_format *f);
64 int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
65 struct v4l2_format *f);
66 int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
67 struct v4l2_format *f);
68 int (*vidioc_g_fmt_type_private)(struct file *file, void *fh,
69 struct v4l2_format *f);
71 /* VIDIOC_S_FMT handlers */
72 int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh,
73 struct v4l2_format *f);
74 int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
75 struct v4l2_format *f);
76 int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh,
77 struct v4l2_format *f);
78 int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
79 struct v4l2_format *f);
80 int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh,
81 struct v4l2_format *f);
82 int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh,
83 struct v4l2_format *f);
84 int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
85 struct v4l2_format *f);
86 int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
87 struct v4l2_format *f);
88 int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
89 struct v4l2_format *f);
90 int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
91 struct v4l2_format *f);
92 int (*vidioc_s_fmt_type_private)(struct file *file, void *fh,
93 struct v4l2_format *f);
95 /* VIDIOC_TRY_FMT handlers */
96 int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh,
97 struct v4l2_format *f);
98 int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
99 struct v4l2_format *f);
100 int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh,
101 struct v4l2_format *f);
102 int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
103 struct v4l2_format *f);
104 int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh,
105 struct v4l2_format *f);
106 int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh,
107 struct v4l2_format *f);
108 int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
109 struct v4l2_format *f);
110 int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
111 struct v4l2_format *f);
112 int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
113 struct v4l2_format *f);
114 int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
115 struct v4l2_format *f);
116 int (*vidioc_try_fmt_type_private)(struct file *file, void *fh,
117 struct v4l2_format *f);
119 /* Buffer handlers */
120 int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
121 int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
122 int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
123 int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
126 int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
127 int (*vidioc_g_fbuf) (struct file *file, void *fh,
128 struct v4l2_framebuffer *a);
129 int (*vidioc_s_fbuf) (struct file *file, void *fh,
130 struct v4l2_framebuffer *a);
133 int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
134 int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
137 ENUMSTD is handled by videodev.c
139 int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
140 int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id *norm);
141 int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
144 int (*vidioc_enum_input)(struct file *file, void *fh,
145 struct v4l2_input *inp);
146 int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i);
147 int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i);
149 /* Output handling */
150 int (*vidioc_enum_output) (struct file *file, void *fh,
151 struct v4l2_output *a);
152 int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i);
153 int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i);
155 /* Control handling */
156 int (*vidioc_queryctrl) (struct file *file, void *fh,
157 struct v4l2_queryctrl *a);
158 int (*vidioc_g_ctrl) (struct file *file, void *fh,
159 struct v4l2_control *a);
160 int (*vidioc_s_ctrl) (struct file *file, void *fh,
161 struct v4l2_control *a);
162 int (*vidioc_g_ext_ctrls) (struct file *file, void *fh,
163 struct v4l2_ext_controls *a);
164 int (*vidioc_s_ext_ctrls) (struct file *file, void *fh,
165 struct v4l2_ext_controls *a);
166 int (*vidioc_try_ext_ctrls) (struct file *file, void *fh,
167 struct v4l2_ext_controls *a);
168 int (*vidioc_querymenu) (struct file *file, void *fh,
169 struct v4l2_querymenu *a);
172 int (*vidioc_enumaudio) (struct file *file, void *fh,
173 struct v4l2_audio *a);
174 int (*vidioc_g_audio) (struct file *file, void *fh,
175 struct v4l2_audio *a);
176 int (*vidioc_s_audio) (struct file *file, void *fh,
177 struct v4l2_audio *a);
179 /* Audio out ioctls */
180 int (*vidioc_enumaudout) (struct file *file, void *fh,
181 struct v4l2_audioout *a);
182 int (*vidioc_g_audout) (struct file *file, void *fh,
183 struct v4l2_audioout *a);
184 int (*vidioc_s_audout) (struct file *file, void *fh,
185 struct v4l2_audioout *a);
186 int (*vidioc_g_modulator) (struct file *file, void *fh,
187 struct v4l2_modulator *a);
188 int (*vidioc_s_modulator) (struct file *file, void *fh,
189 struct v4l2_modulator *a);
191 int (*vidioc_cropcap) (struct file *file, void *fh,
192 struct v4l2_cropcap *a);
193 int (*vidioc_g_crop) (struct file *file, void *fh,
194 struct v4l2_crop *a);
195 int (*vidioc_s_crop) (struct file *file, void *fh,
196 struct v4l2_crop *a);
197 /* Compression ioctls */
198 int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
199 struct v4l2_jpegcompression *a);
200 int (*vidioc_s_jpegcomp) (struct file *file, void *fh,
201 struct v4l2_jpegcompression *a);
202 int (*vidioc_g_enc_index) (struct file *file, void *fh,
203 struct v4l2_enc_idx *a);
204 int (*vidioc_encoder_cmd) (struct file *file, void *fh,
205 struct v4l2_encoder_cmd *a);
206 int (*vidioc_try_encoder_cmd) (struct file *file, void *fh,
207 struct v4l2_encoder_cmd *a);
209 /* Stream type-dependent parameter ioctls */
210 int (*vidioc_g_parm) (struct file *file, void *fh,
211 struct v4l2_streamparm *a);
212 int (*vidioc_s_parm) (struct file *file, void *fh,
213 struct v4l2_streamparm *a);
216 int (*vidioc_g_tuner) (struct file *file, void *fh,
217 struct v4l2_tuner *a);
218 int (*vidioc_s_tuner) (struct file *file, void *fh,
219 struct v4l2_tuner *a);
220 int (*vidioc_g_frequency) (struct file *file, void *fh,
221 struct v4l2_frequency *a);
222 int (*vidioc_s_frequency) (struct file *file, void *fh,
223 struct v4l2_frequency *a);
226 int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
227 struct v4l2_sliced_vbi_cap *a);
229 /* Log status ioctl */
230 int (*vidioc_log_status) (struct file *file, void *fh);
232 int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh,
233 struct v4l2_hw_freq_seek *a);
235 /* Debugging ioctls */
236 #ifdef CONFIG_VIDEO_ADV_DEBUG
237 int (*vidioc_g_register) (struct file *file, void *fh,
238 struct v4l2_dbg_register *reg);
239 int (*vidioc_s_register) (struct file *file, void *fh,
240 struct v4l2_dbg_register *reg);
242 int (*vidioc_g_chip_ident) (struct file *file, void *fh,
243 struct v4l2_dbg_chip_ident *chip);
245 int (*vidioc_enum_framesizes) (struct file *file, void *fh,
246 struct v4l2_frmsizeenum *fsize);
248 int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
249 struct v4l2_frmivalenum *fival);
251 /* DV Timings IOCTLs */
252 int (*vidioc_enum_dv_presets) (struct file *file, void *fh,
253 struct v4l2_dv_enum_preset *preset);
255 int (*vidioc_s_dv_preset) (struct file *file, void *fh,
256 struct v4l2_dv_preset *preset);
257 int (*vidioc_g_dv_preset) (struct file *file, void *fh,
258 struct v4l2_dv_preset *preset);
259 int (*vidioc_query_dv_preset) (struct file *file, void *fh,
260 struct v4l2_dv_preset *qpreset);
261 int (*vidioc_s_dv_timings) (struct file *file, void *fh,
262 struct v4l2_dv_timings *timings);
263 int (*vidioc_g_dv_timings) (struct file *file, void *fh,
264 struct v4l2_dv_timings *timings);
266 int (*vidioc_subscribe_event) (struct v4l2_fh *fh,
267 struct v4l2_event_subscription *sub);
268 int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
269 struct v4l2_event_subscription *sub);
271 /* For other private ioctls */
272 long (*vidioc_default) (struct file *file, void *fh,
273 bool valid_prio, int cmd, void *arg);
277 /* v4l debugging and diagnostics */
279 /* Debug bitmask flags to be used on V4L2 */
280 #define V4L2_DEBUG_IOCTL 0x01
281 #define V4L2_DEBUG_IOCTL_ARG 0x02
283 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
284 #define v4l_print_ioctl(name, cmd) \
286 printk(KERN_DEBUG "%s: ", name); \
287 v4l_printk_ioctl(cmd); \
290 /* Use this macro in I2C drivers where 'client' is the struct i2c_client
292 #define v4l_i2c_print_ioctl(client, cmd) \
294 v4l_client_printk(KERN_DEBUG, client, ""); \
295 v4l_printk_ioctl(cmd); \
298 /* Video standard functions */
299 extern const char *v4l2_norm_to_name(v4l2_std_id id);
300 extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
301 extern int v4l2_video_std_construct(struct v4l2_standard *vs,
302 int id, const char *name);
303 /* Prints the ioctl in a human-readable format */
304 extern void v4l_printk_ioctl(unsigned int cmd);
306 /* names for fancy debug output */
307 extern const char *v4l2_field_names[];
308 extern const char *v4l2_type_names[];
311 /* 32 Bits compatibility layer for 64 bits processors */
312 extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
316 typedef long (*v4l2_kioctl)(struct file *file,
317 unsigned int cmd, void *arg);
319 /* Include support for obsoleted stuff */
320 extern long video_usercopy(struct file *file, unsigned int cmd,
321 unsigned long arg, v4l2_kioctl func);
323 /* Standard handlers for V4L ioctl's */
324 extern long video_ioctl2(struct file *file,
325 unsigned int cmd, unsigned long arg);
327 #endif /* _V4L2_IOCTL_H */