2 v4l2 common internal API header
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
9 Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
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.
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.
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
26 #ifndef V4L2_COMMON_H_
27 #define V4L2_COMMON_H_
29 #include <media/v4l2-dev.h>
31 /* v4l debugging and diagnostics */
33 /* Debug bitmask flags to be used on V4L2 */
34 #define V4L2_DEBUG_IOCTL 0x01
35 #define V4L2_DEBUG_IOCTL_ARG 0x02
37 /* Common printk constucts for v4l-i2c drivers. These macros create a unique
38 prefix consisting of the driver name, the adapter number and the i2c
40 #define v4l_printk(level, name, adapter, addr, fmt, arg...) \
41 printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)
43 #define v4l_client_printk(level, client, fmt, arg...) \
44 v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \
45 (client)->addr, fmt , ## arg)
47 #define v4l_err(client, fmt, arg...) \
48 v4l_client_printk(KERN_ERR, client, fmt , ## arg)
50 #define v4l_warn(client, fmt, arg...) \
51 v4l_client_printk(KERN_WARNING, client, fmt , ## arg)
53 #define v4l_info(client, fmt, arg...) \
54 v4l_client_printk(KERN_INFO, client, fmt , ## arg)
56 /* These three macros assume that the debug level is set with a module
57 parameter called 'debug'. */
58 #define v4l_dbg(level, debug, client, fmt, arg...) \
60 if (debug >= (level)) \
61 v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
64 /* Prints the ioctl in a human-readable format */
65 extern void v4l_printk_ioctl(unsigned int cmd);
67 /* Prints the ioctl and arg in a human-readable format */
68 extern void v4l_printk_ioctl_arg(char *s,unsigned int cmd, void *arg);
70 /* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
71 #define v4l_print_ioctl(name, cmd) \
73 printk(KERN_DEBUG "%s: ", name); \
74 v4l_printk_ioctl(cmd); \
77 /* Use this macro in I2C drivers where 'client' is the struct i2c_client
79 #define v4l_i2c_print_ioctl(client, cmd) \
81 v4l_client_printk(KERN_DEBUG, client, ""); \
82 v4l_printk_ioctl(cmd); \
85 /* ------------------------------------------------------------------------- */
89 /* VIDIOC_INT_G_REGISTER and VIDIOC_INT_S_REGISTER */
90 struct v4l2_register {
91 u32 i2c_id; /* I2C driver ID of the I2C chip. 0 for the I2C adapter. */
96 /* VIDIOC_INT_DECODE_VBI_LINE */
97 struct v4l2_decode_vbi_line {
98 u32 is_second_field; /* Set to 0 for the first (odd) field,
99 set to 1 for the second (even) field. */
100 u8 *p; /* Pointer to the sliced VBI data from the decoder.
101 On exit points to the start of the payload. */
102 u32 line; /* Line number of the sliced VBI data (1-23) */
103 u32 type; /* VBI service type (V4L2_SLICED_*). 0 if no service found */
106 /* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
107 enum v4l2_chip_ident {
108 /* general idents: reserved range 0-49 */
109 V4L2_IDENT_UNKNOWN = 0,
111 /* module saa7115: reserved range 100-149 */
112 V4L2_IDENT_SAA7113 = 103,
113 V4L2_IDENT_SAA7114 = 104,
114 V4L2_IDENT_SAA7115 = 105,
116 /* module saa7127: reserved range 150-199 */
117 V4L2_IDENT_SAA7127 = 157,
118 V4L2_IDENT_SAA7129 = 159,
120 /* module cx25840: reserved range 200-249 */
121 V4L2_IDENT_CX25836 = 236,
122 V4L2_IDENT_CX25837 = 237,
123 V4L2_IDENT_CX25840 = 240,
124 V4L2_IDENT_CX25841 = 241,
125 V4L2_IDENT_CX25842 = 242,
126 V4L2_IDENT_CX25843 = 243,
131 /* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */
132 #define AUDC_SET_RADIO _IO('d',88)
136 /* Sets tuner type and its I2C addr */
137 #define TUNER_SET_TYPE_ADDR _IOW('d', 90, int)
139 /* Puts tuner on powersaving state, disabling it, except for i2c. To be replaced
140 by VIDIOC_INT_S_STANDBY. */
141 #define TUNER_SET_STANDBY _IOW('d', 91, int)
143 /* Sets tda9887 specific stuff, like port1, port2 and qss */
144 #define TDA9887_SET_CONFIG _IOW('d', 92, int)
146 /* Switch the tuner to a specific tuner mode. Replacement of AUDC_SET_RADIO */
147 #define VIDIOC_INT_S_TUNER_MODE _IOW('d', 93, enum v4l2_tuner_type)
149 /* Generic standby command. Passing -1 (all bits set to 1) will put the whole
150 chip into standby mode, value 0 will make the chip fully active. Specific
151 bits can be used by certain chips to enable/disable specific subsystems.
152 Replacement of TUNER_SET_STANDBY. */
153 #define VIDIOC_INT_S_STANDBY _IOW('d', 94, u32)
155 /* only implemented if CONFIG_VIDEO_ADV_DEBUG is defined */
156 #define VIDIOC_INT_S_REGISTER _IOR ('d', 100, struct v4l2_register)
157 #define VIDIOC_INT_G_REGISTER _IOWR('d', 101, struct v4l2_register)
159 /* Reset the I2C chip */
160 #define VIDIOC_INT_RESET _IO ('d', 102)
162 /* Set the frequency (in Hz) of the audio clock output.
163 Used to slave an audio processor to the video decoder, ensuring that audio
164 and video remain synchronized.
165 Usual values for the frequency are 48000, 44100 or 32000 Hz.
166 If the frequency is not supported, then -EINVAL is returned. */
167 #define VIDIOC_INT_AUDIO_CLOCK_FREQ _IOW ('d', 103, u32)
169 /* Video decoders that support sliced VBI need to implement this ioctl.
170 Field p of the v4l2_sliced_vbi_line struct is set to the start of the VBI
171 data that was generated by the decoder. The driver then parses the sliced
172 VBI data and sets the other fields in the struct accordingly. The pointer p
173 is updated to point to the start of the payload which can be copied
174 verbatim into the data field of the v4l2_sliced_vbi_data struct. If no
175 valid VBI data was found, then the type field is set to 0 on return. */
176 #define VIDIOC_INT_DECODE_VBI_LINE _IOWR('d', 104, struct v4l2_decode_vbi_line)
178 /* Used to generate VBI signals on a video signal. v4l2_sliced_vbi_data is
179 filled with the data packets that should be output. Note that if you set
180 the line field to 0, then that VBI signal is disabled. If no
181 valid VBI data was found, then the type field is set to 0 on return. */
182 #define VIDIOC_INT_S_VBI_DATA _IOW ('d', 105, struct v4l2_sliced_vbi_data)
184 /* Used to obtain the sliced VBI packet from a readback register. Not all
185 video decoders support this. If no data is available because the readback
186 register contains invalid or erroneous data -EIO is returned. Note that
187 you must fill in the 'id' member and the 'field' member (to determine
188 whether CC data from the first or second field should be obtained). */
189 #define VIDIOC_INT_G_VBI_DATA _IOWR('d', 106, struct v4l2_sliced_vbi_data)
191 /* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
193 #define VIDIOC_INT_G_CHIP_IDENT _IOR ('d', 107, enum v4l2_chip_ident)
195 /* Sets I2S speed in bps. This is used to provide a standard way to select I2S
196 clock used by driving digital audio streams at some board designs.
197 Usual values for the frequency are 1024000 and 2048000.
198 If the frequency is not supported, then -EINVAL is returned. */
199 #define VIDIOC_INT_I2S_CLOCK_FREQ _IOW ('d', 108, u32)
201 /* Routing definition, device dependent. It specifies which inputs (if any)
202 should be routed to which outputs (if any). */
203 struct v4l2_routing {
208 /* These internal commands should be used to define the inputs and outputs
209 of an audio/video chip. They will replace the v4l2 API commands
210 VIDIOC_S/G_INPUT, VIDIOC_S/G_OUTPUT, VIDIOC_S/G_AUDIO and VIDIOC_S/G_AUDOUT
211 that are meant to be used by the user.
212 The internal commands should be used to switch inputs/outputs
213 because only the driver knows how to map a 'Television' input to the precise
214 input/output routing of an A/D converter, or a DSP, or a video digitizer.
215 These four commands should only be sent directly to an i2c device, they
216 should not be broadcast as the routing is very device specific. */
217 #define VIDIOC_INT_S_AUDIO_ROUTING _IOW ('d', 109, struct v4l2_routing)
218 #define VIDIOC_INT_G_AUDIO_ROUTING _IOR ('d', 110, struct v4l2_routing)
219 #define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing)
220 #define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing)
222 struct v4l2_crystal_freq {
223 u32 freq; /* frequency in Hz of the crystal */
224 u32 flags; /* device specific flags */
227 /* Sets the frequency of the crystal used to generate the clocks.
228 An extra flags field allows device specific configuration regarding
229 clock frequency dividers, etc. If not used, then set flags to 0.
230 If the frequency is not supported, then -EINVAL is returned. */
231 #define VIDIOC_INT_S_CRYSTAL_FREQ _IOW ('d', 113, struct v4l2_crystal_freq)
233 #endif /* V4L2_COMMON_H_ */