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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 | ||
35ea11ff HV |
60 | /* Priority helper functions */ |
61 | ||
62 | struct v4l2_prio_state { | |
63 | atomic_t prios[4]; | |
64 | }; | |
65 | int v4l2_prio_init(struct v4l2_prio_state *global); | |
66 | int v4l2_prio_change(struct v4l2_prio_state *global, enum v4l2_priority *local, | |
67 | enum v4l2_priority new); | |
68 | int v4l2_prio_open(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
69 | int v4l2_prio_close(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
70 | enum v4l2_priority v4l2_prio_max(struct v4l2_prio_state *global); | |
71 | int v4l2_prio_check(struct v4l2_prio_state *global, enum v4l2_priority *local); | |
72 | ||
73 | /* ------------------------------------------------------------------------- */ | |
74 | ||
9cb2318b HV |
75 | /* Control helper functions */ |
76 | ||
77 | int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, | |
78 | const char **menu_items); | |
79 | const char **v4l2_ctrl_get_menu(u32 id); | |
80 | int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); | |
81 | int v4l2_ctrl_query_fill_std(struct v4l2_queryctrl *qctrl); | |
82 | int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, | |
83 | struct v4l2_queryctrl *qctrl, const char **menu_items); | |
84 | u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id); | |
85 | ||
86 | /* ------------------------------------------------------------------------- */ | |
87 | ||
f3d092b8 HV |
88 | /* Register/chip ident helper function */ |
89 | ||
90 | struct i2c_client; /* forward reference */ | |
91 | int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id); | |
3434eb7e HV |
92 | int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip, |
93 | u32 ident, u32 revision); | |
f3d092b8 HV |
94 | int v4l2_chip_match_host(u32 id_type, u32 chip_id); |
95 | ||
96 | /* ------------------------------------------------------------------------- */ | |
97 | ||
8ffbc655 HV |
98 | /* Helper function for I2C legacy drivers */ |
99 | ||
100 | struct i2c_driver; | |
101 | struct i2c_adapter; | |
102 | struct i2c_client; | |
d2653e92 | 103 | struct i2c_device_id; |
8ffbc655 HV |
104 | |
105 | int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver, | |
d2653e92 JD |
106 | const char *name, |
107 | int (*probe)(struct i2c_client *, const struct i2c_device_id *)); | |
8ffbc655 HV |
108 | |
109 | /* ------------------------------------------------------------------------- */ | |
110 | ||
7e8b09ea HV |
111 | /* Internal ioctls */ |
112 | ||
b2f0648f HV |
113 | /* VIDIOC_INT_DECODE_VBI_LINE */ |
114 | struct v4l2_decode_vbi_line { | |
115 | u32 is_second_field; /* Set to 0 for the first (odd) field, | |
116 | set to 1 for the second (even) field. */ | |
117 | u8 *p; /* Pointer to the sliced VBI data from the decoder. | |
118 | On exit points to the start of the payload. */ | |
119 | u32 line; /* Line number of the sliced VBI data (1-23) */ | |
120 | u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */ | |
121 | }; | |
122 | ||
7f171123 MCC |
123 | struct v4l2_priv_tun_config { |
124 | int tuner; | |
125 | void *priv; | |
126 | }; | |
127 | ||
5e453dc7 | 128 | /* audio ioctls */ |
757d2505 HV |
129 | |
130 | /* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */ | |
5e453dc7 | 131 | #define AUDC_SET_RADIO _IO('d',88) |
757d2505 | 132 | |
5e453dc7 | 133 | /* tuner ioctls */ |
757d2505 | 134 | |
5e453dc7 | 135 | /* Sets tuner type and its I2C addr */ |
757d2505 HV |
136 | #define TUNER_SET_TYPE_ADDR _IOW('d', 90, int) |
137 | ||
138 | /* Puts tuner on powersaving state, disabling it, except for i2c. To be replaced | |
139 | by VIDIOC_INT_S_STANDBY. */ | |
140 | #define TUNER_SET_STANDBY _IOW('d', 91, int) | |
141 | ||
5e453dc7 | 142 | /* Sets tda9887 specific stuff, like port1, port2 and qss */ |
7f171123 | 143 | #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) |
757d2505 HV |
144 | |
145 | /* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */ | |
146 | #define VIDIOC_INT_S_TUNER_MODE _IOW('d', 93, enum v4l2_tuner_type) | |
147 | ||
148 | /* Generic standby command. Passing -1 (all bits set to 1) will put the whole | |
149 | chip into standby mode, value 0 will make the chip fully active. Specific | |
150 | bits can be used by certain chips to enable/disable specific subsystems. | |
151 | Replacement of TUNER_SET_STANDBY. */ | |
152 | #define VIDIOC_INT_S_STANDBY _IOW('d', 94, u32) | |
5e453dc7 | 153 | |
52ebc763 | 154 | /* 100, 101 used by VIDIOC_DBG_[SG]_REGISTER */ |
b2f0648f | 155 | |
784e8fe4 HV |
156 | /* Generic reset command. The argument selects which subsystems to reset. |
157 | Passing 0 will always reset the whole chip. */ | |
158 | #define VIDIOC_INT_RESET _IOW ('d', 102, u32) | |
b2f0648f | 159 | |
3578d3dd | 160 | /* Set the frequency (in Hz) of the audio clock output. |
b2f0648f | 161 | Used to slave an audio processor to the video decoder, ensuring that audio |
3578d3dd HV |
162 | and video remain synchronized. |
163 | Usual values for the frequency are 48000, 44100 or 32000 Hz. | |
164 | If the frequency is not supported, then -EINVAL is returned. */ | |
165 | #define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32) | |
b2f0648f HV |
166 | |
167 | /* Video decoders that support sliced VBI need to implement this ioctl. | |
168 | Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI | |
169 | data that was generated by the decoder. The driver then parses the sliced | |
170 | VBI data and sets the other fields in the struct accordingly. The pointer p | |
171 | is updated to point to the start of the payload which can be copied | |
172 | verbatim into the data field of the v4l2_sliced_vbi_data struct. If no | |
173 | valid VBI data was found, then the type field is set to 0 on return. */ | |
174 | #define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line) | |
175 | ||
176 | /* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is | |
177 | filled with the data packets that should be output. Note that if you set | |
12db5607 MCC |
178 | the line field to 0, then that VBI signal is disabled. If no |
179 | valid VBI data was found, then the type field is set to 0 on return. */ | |
b2f0648f HV |
180 | #define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data) |
181 | ||
182 | /* Used to obtain the sliced VBI packet from a readback register. Not all | |
183 | video decoders support this. If no data is available because the readback | |
184 | register contains invalid or erroneous data -EIO is returned. Note that | |
185 | you must fill in the 'id' member and the 'field' member (to determine | |
186 | whether CC data from the first or second field should be obtained). */ | |
41f38b43 | 187 | #define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data) |
b2f0648f | 188 | |
9bb13a6d MCC |
189 | /* Sets I2S speed in bps. This is used to provide a standard way to select I2S |
190 | clock used by driving digital audio streams at some board designs. | |
191 | Usual values for the frequency are 1024000 and 2048000. | |
192 | If the frequency is not supported, then -EINVAL is returned. */ | |
193 | #define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32) | |
194 | ||
757d2505 HV |
195 | /* Routing definition, device dependent. It specifies which inputs (if any) |
196 | should be routed to which outputs (if any). */ | |
197 | struct v4l2_routing { | |
198 | u32 input; | |
199 | u32 output; | |
200 | }; | |
201 | ||
202 | /* These internal commands should be used to define the inputs and outputs | |
8bf2f8e7 HV |
203 | of an audio/video chip. They will replace the v4l2 API commands |
204 | VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT | |
205 | that are meant to be used by the user. | |
206 | The internal commands should be used to switch inputs/outputs | |
757d2505 HV |
207 | because only the driver knows how to map a 'Television' input to the precise |
208 | input/output routing of an A/D converter, or a DSP, or a video digitizer. | |
209 | These four commands should only be sent directly to an i2c device, they | |
210 | should not be broadcast as the routing is very device specific. */ | |
211 | #define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing) | |
41f38b43 | 212 | #define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing) |
757d2505 | 213 | #define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing) |
41f38b43 | 214 | #define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing) |
757d2505 | 215 | |
b7f8292c HV |
216 | struct v4l2_crystal_freq { |
217 | u32 freq; /* frequency in Hz of the crystal */ | |
218 | u32 flags; /* device specific flags */ | |
219 | }; | |
220 | ||
221 | /* Sets the frequency of the crystal used to generate the clocks. | |
222 | An extra flags field allows device specific configuration regarding | |
223 | clock frequency dividers, etc. If not used, then set flags to 0. | |
224 | If the frequency is not supported, then -EINVAL is returned. */ | |
225 | #define VIDIOC_INT_S_CRYSTAL_FREQ _IOW ('d', 113, struct v4l2_crystal_freq) | |
226 | ||
9c4dfadb JC |
227 | /* Initialize the sensor registors to some sort of reasonable |
228 | default values. */ | |
229 | #define VIDIOC_INT_INIT _IOW ('d', 114, u32) | |
230 | ||
045290b2 HV |
231 | /* Set v4l2_std_id for video OUTPUT devices. This is ignored by |
232 | video input devices. */ | |
233 | #define VIDIOC_INT_S_STD_OUTPUT _IOW ('d', 115, v4l2_std_id) | |
234 | ||
235 | /* Get v4l2_std_id for video OUTPUT devices. This is ignored by | |
236 | video input devices. */ | |
237 | #define VIDIOC_INT_G_STD_OUTPUT _IOW ('d', 116, v4l2_std_id) | |
238 | ||
b2f0648f | 239 | #endif /* V4L2_COMMON_H_ */ |