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b2f0648f HV |
1 | /* |
2 | v4l2 common internal API header | |
3 | ||
4 | This header contains internal shared ioctl definitions for use by the | |
5 | internal low-level v4l2 drivers. | |
6 | Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal | |
7 | define, | |
8 | ||
9 | Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl> | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #ifndef V4L2_COMMON_H_ | |
27 | #define V4L2_COMMON_H_ | |
28 | ||
401998fa MCC |
29 | #include <media/v4l2-dev.h> |
30 | ||
7e8b09ea HV |
31 | /* Common printk constucts for v4l-i2c drivers. These macros create a unique |
32 | prefix consisting of the driver name, the adapter number and the i2c | |
33 | address. */ | |
34 | #define v4l_printk(level, name, adapter, addr, fmt, arg...) \ | |
35 | printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg) | |
36 | ||
cab462f7 | 37 | #define v4l_client_printk(level, client, fmt, arg...) \ |
7e8b09ea HV |
38 | v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \ |
39 | (client)->addr, fmt , ## arg) | |
40 | ||
41 | #define v4l_err(client, fmt, arg...) \ | |
42 | v4l_client_printk(KERN_ERR, client, fmt , ## arg) | |
43 | ||
44 | #define v4l_warn(client, fmt, arg...) \ | |
45 | v4l_client_printk(KERN_WARNING, client, fmt , ## arg) | |
46 | ||
47 | #define v4l_info(client, fmt, arg...) \ | |
48 | v4l_client_printk(KERN_INFO, client, fmt , ## arg) | |
49 | ||
50 | /* These three macros assume that the debug level is set with a module | |
51 | parameter called 'debug'. */ | |
f167cb4e | 52 | #define v4l_dbg(level, debug, client, fmt, arg...) \ |
7e8b09ea HV |
53 | do { \ |
54 | if (debug >= (level)) \ | |
55 | v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \ | |
56 | } while (0) | |
57 | ||
7e8b09ea HV |
58 | /* ------------------------------------------------------------------------- */ |
59 | ||
dd99120c HV |
60 | /* These printk constructs can be used with v4l2_device and v4l2_subdev */ |
61 | #define v4l2_printk(level, dev, fmt, arg...) \ | |
62 | printk(level "%s: " fmt, (dev)->name , ## arg) | |
63 | ||
64 | #define v4l2_err(dev, fmt, arg...) \ | |
65 | v4l2_printk(KERN_ERR, dev, fmt , ## arg) | |
66 | ||
67 | #define v4l2_warn(dev, fmt, arg...) \ | |
68 | v4l2_printk(KERN_WARNING, dev, fmt , ## arg) | |
69 | ||
70 | #define v4l2_info(dev, fmt, arg...) \ | |
71 | v4l2_printk(KERN_INFO, dev, fmt , ## arg) | |
72 | ||
73 | /* These three macros assume that the debug level is set with a module | |
74 | parameter called 'debug'. */ | |
75 | #define v4l2_dbg(level, debug, dev, fmt, arg...) \ | |
76 | do { \ | |
77 | if (debug >= (level)) \ | |
78 | v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \ | |
79 | } while (0) | |
80 | ||
81 | /* ------------------------------------------------------------------------- */ | |
82 | ||
35ea11ff HV |
83 | /* Priority helper functions */ |
84 | ||
85 | struct v4l2_prio_state { | |
86 | atomic_t prios[4]; | |
87 | }; | |
88 | int v4l2_prio_init(struct v4l2_prio_state *global); | |
89 | int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local, | |
90 | enum v4l2_priority new); | |
91 | int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
92 | int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
93 | enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global); | |
94 | int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
95 | ||
96 | /* ------------------------------------------------------------------------- */ | |
97 | ||
9cb2318b HV |
98 | /* Control helper functions */ |
99 | ||
100 | int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, | |
101 | const char **menu_items); | |
69028d70 | 102 | const char *v4l2_ctrl_get_name(u32 id); |
9cb2318b HV |
103 | const char **v4l2_ctrl_get_menu(u32 id); |
104 | int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); | |
105 | int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl); | |
106 | int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, | |
107 | struct v4l2_queryctrl *qctrl, const char **menu_items); | |
1e551266 HV |
108 | #define V4L2_CTRL_MENU_IDS_END (0xffffffff) |
109 | int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids); | |
9cb2318b HV |
110 | u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id); |
111 | ||
112 | /* ------------------------------------------------------------------------- */ | |
113 | ||
f3d092b8 HV |
114 | /* Register/chip ident helper function */ |
115 | ||
116 | struct i2c_client; /* forward reference */ | |
117 | int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id); | |
3434eb7e HV |
118 | int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip, |
119 | u32 ident, u32 revision); | |
f3d092b8 HV |
120 | int v4l2_chip_match_host(u32 id_type, u32 chip_id); |
121 | ||
122 | /* ------------------------------------------------------------------------- */ | |
123 | ||
8ffbc655 HV |
124 | /* Helper function for I2C legacy drivers */ |
125 | ||
126 | struct i2c_driver; | |
127 | struct i2c_adapter; | |
128 | struct i2c_client; | |
d2653e92 | 129 | struct i2c_device_id; |
dd99120c HV |
130 | struct v4l2_device; |
131 | struct v4l2_subdev; | |
132 | struct v4l2_subdev_ops; | |
8ffbc655 HV |
133 | |
134 | int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver, | |
d2653e92 JD |
135 | const char *name, |
136 | int (*probe)(struct i2c_client *, const struct i2c_device_id *)); | |
8ffbc655 | 137 | |
dd99120c HV |
138 | /* Load an i2c module and return an initialized v4l2_subdev struct. |
139 | Only call request_module if module_name != NULL. | |
140 | The client_type argument is the name of the chip that's on the adapter. */ | |
141 | struct v4l2_subdev *v4l2_i2c_new_subdev(struct i2c_adapter *adapter, | |
142 | const char *module_name, const char *client_type, u8 addr); | |
143 | /* Probe and load an i2c module and return an initialized v4l2_subdev struct. | |
144 | Only call request_module if module_name != NULL. | |
145 | The client_type argument is the name of the chip that's on the adapter. */ | |
146 | struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter, | |
147 | const char *module_name, const char *client_type, | |
148 | const unsigned short *addrs); | |
149 | /* Initialize an v4l2_subdev with data from an i2c_client struct */ | |
150 | void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, | |
151 | const struct v4l2_subdev_ops *ops); | |
152 | ||
8ffbc655 HV |
153 | /* ------------------------------------------------------------------------- */ |
154 | ||
7e8b09ea HV |
155 | /* Internal ioctls */ |
156 | ||
b2f0648f HV |
157 | /* VIDIOC_INT_DECODE_VBI_LINE */ |
158 | struct v4l2_decode_vbi_line { | |
159 | u32 is_second_field; /* Set to 0 for the first (odd) field, | |
160 | set to 1 for the second (even) field. */ | |
161 | u8 *p; /* Pointer to the sliced VBI data from the decoder. | |
162 | On exit points to the start of the payload. */ | |
163 | u32 line; /* Line number of the sliced VBI data (1-23) */ | |
164 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ | |
165 | }; | |
166 | ||
7f171123 MCC |
167 | struct v4l2_priv_tun_config { |
168 | int tuner; | |
169 | void *priv; | |
170 | }; | |
171 | ||
5e453dc7 | 172 | /* audio ioctls */ |
757d2505 HV |
173 | |
174 | /* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */ | |
5e453dc7 | 175 | #define AUDC_SET_RADIO _IO('d',88) |
757d2505 | 176 | |
5e453dc7 | 177 | /* tuner ioctls */ |
757d2505 | 178 | |
5e453dc7 | 179 | /* Sets tuner type and its I2C addr */ |
757d2505 HV |
180 | #define TUNER_SET_TYPE_ADDR _IOW('d', 90, int) |
181 | ||
182 | /* Puts tuner on powersaving state, disabling it, except for i2c. To be replaced | |
183 | by VIDIOC_INT_S_STANDBY. */ | |
184 | #define TUNER_SET_STANDBY _IOW('d', 91, int) | |
185 | ||
5e453dc7 | 186 | /* Sets tda9887 specific stuff, like port1, port2 and qss */ |
7f171123 | 187 | #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) |
757d2505 HV |
188 | |
189 | /* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */ | |
190 | #define VIDIOC_INT_S_TUNER_MODE _IOW('d', 93, enum v4l2_tuner_type) | |
191 | ||
192 | /* Generic standby command. Passing -1 (all bits set to 1) will put the whole | |
193 | chip into standby mode, value 0 will make the chip fully active. Specific | |
194 | bits can be used by certain chips to enable/disable specific subsystems. | |
195 | Replacement of TUNER_SET_STANDBY. */ | |
196 | #define VIDIOC_INT_S_STANDBY _IOW('d', 94, u32) | |
5e453dc7 | 197 | |
52ebc763 | 198 | /* 100, 101 used by VIDIOC_DBG_[SG]_REGISTER */ |
b2f0648f | 199 | |
784e8fe4 HV |
200 | /* Generic reset command. The argument selects which subsystems to reset. |
201 | Passing 0 will always reset the whole chip. */ | |
202 | #define VIDIOC_INT_RESET _IOW ('d', 102, u32) | |
b2f0648f | 203 | |
3578d3dd | 204 | /* Set the frequency (in Hz) of the audio clock output. |
b2f0648f | 205 | Used to slave an audio processor to the video decoder, ensuring that audio |
3578d3dd HV |
206 | and video remain synchronized. |
207 | Usual values for the frequency are 48000, 44100 or 32000 Hz. | |
208 | If the frequency is not supported, then -EINVAL is returned. */ | |
209 | #define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32) | |
b2f0648f HV |
210 | |
211 | /* Video decoders that support sliced VBI need to implement this ioctl. | |
212 | Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI | |
213 | data that was generated by the decoder. The driver then parses the sliced | |
214 | VBI data and sets the other fields in the struct accordingly. The pointer p | |
215 | is updated to point to the start of the payload which can be copied | |
216 | verbatim into the data field of the v4l2_sliced_vbi_data struct. If no | |
217 | valid VBI data was found, then the type field is set to 0 on return. */ | |
218 | #define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line) | |
219 | ||
220 | /* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is | |
221 | filled with the data packets that should be output. Note that if you set | |
12db5607 MCC |
222 | the line field to 0, then that VBI signal is disabled. If no |
223 | valid VBI data was found, then the type field is set to 0 on return. */ | |
b2f0648f HV |
224 | #define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data) |
225 | ||
226 | /* Used to obtain the sliced VBI packet from a readback register. Not all | |
227 | video decoders support this. If no data is available because the readback | |
228 | register contains invalid or erroneous data -EIO is returned. Note that | |
229 | you must fill in the 'id' member and the 'field' member (to determine | |
230 | whether CC data from the first or second field should be obtained). */ | |
41f38b43 | 231 | #define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data) |
b2f0648f | 232 | |
9bb13a6d MCC |
233 | /* Sets I2S speed in bps. This is used to provide a standard way to select I2S |
234 | clock used by driving digital audio streams at some board designs. | |
235 | Usual values for the frequency are 1024000 and 2048000. | |
236 | If the frequency is not supported, then -EINVAL is returned. */ | |
237 | #define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32) | |
238 | ||
757d2505 HV |
239 | /* Routing definition, device dependent. It specifies which inputs (if any) |
240 | should be routed to which outputs (if any). */ | |
241 | struct v4l2_routing { | |
242 | u32 input; | |
243 | u32 output; | |
244 | }; | |
245 | ||
246 | /* These internal commands should be used to define the inputs and outputs | |
8bf2f8e7 HV |
247 | of an audio/video chip. They will replace the v4l2 API commands |
248 | VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT | |
249 | that are meant to be used by the user. | |
250 | The internal commands should be used to switch inputs/outputs | |
757d2505 HV |
251 | because only the driver knows how to map a 'Television' input to the precise |
252 | input/output routing of an A/D converter, or a DSP, or a video digitizer. | |
253 | These four commands should only be sent directly to an i2c device, they | |
254 | should not be broadcast as the routing is very device specific. */ | |
255 | #define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing) | |
41f38b43 | 256 | #define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing) |
757d2505 | 257 | #define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing) |
41f38b43 | 258 | #define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing) |
757d2505 | 259 | |
b7f8292c HV |
260 | struct v4l2_crystal_freq { |
261 | u32 freq; /* frequency in Hz of the crystal */ | |
262 | u32 flags; /* device specific flags */ | |
263 | }; | |
264 | ||
265 | /* Sets the frequency of the crystal used to generate the clocks. | |
266 | An extra flags field allows device specific configuration regarding | |
267 | clock frequency dividers, etc. If not used, then set flags to 0. | |
268 | If the frequency is not supported, then -EINVAL is returned. */ | |
6bd6dff6 | 269 | #define VIDIOC_INT_S_CRYSTAL_FREQ _IOW('d', 113, struct v4l2_crystal_freq) |
b7f8292c | 270 | |
9c4dfadb JC |
271 | /* Initialize the sensor registors to some sort of reasonable |
272 | default values. */ | |
6bd6dff6 | 273 | #define VIDIOC_INT_INIT _IOW('d', 114, u32) |
9c4dfadb | 274 | |
045290b2 HV |
275 | /* Set v4l2_std_id for video OUTPUT devices. This is ignored by |
276 | video input devices. */ | |
6bd6dff6 | 277 | #define VIDIOC_INT_S_STD_OUTPUT _IOW('d', 115, v4l2_std_id) |
045290b2 HV |
278 | |
279 | /* Get v4l2_std_id for video OUTPUT devices. This is ignored by | |
280 | video input devices. */ | |
6bd6dff6 HV |
281 | #define VIDIOC_INT_G_STD_OUTPUT _IOW('d', 116, v4l2_std_id) |
282 | ||
283 | /* Set GPIO pins. Very simple right now, might need to be extended with | |
284 | a v4l2_gpio struct if a direction is also needed. */ | |
285 | #define VIDIOC_INT_S_GPIO _IOW('d', 117, u32) | |
045290b2 | 286 | |
b2f0648f | 287 | #endif /* V4L2_COMMON_H_ */ |