Commit | Line | Data |
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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...) \ |
f9d32f25 | 38 | v4l_printk(level, (client)->dev.driver->name, (client)->adapter, \ |
7e8b09ea HV |
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 | ||
4daee779 | 83 | /* Control helper function */ |
9cb2318b | 84 | |
9cb2318b | 85 | int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); |
9cb2318b HV |
86 | |
87 | /* ------------------------------------------------------------------------- */ | |
88 | ||
78a3b4db | 89 | /* I2C Helper functions */ |
8ffbc655 HV |
90 | |
91 | struct i2c_driver; | |
92 | struct i2c_adapter; | |
93 | struct i2c_client; | |
d2653e92 | 94 | struct i2c_device_id; |
dd99120c HV |
95 | struct v4l2_device; |
96 | struct v4l2_subdev; | |
97 | struct v4l2_subdev_ops; | |
8ffbc655 | 98 | |
8ffbc655 | 99 | |
dd99120c | 100 | /* Load an i2c module and return an initialized v4l2_subdev struct. |
dd99120c | 101 | The client_type argument is the name of the chip that's on the adapter. */ |
3c7c9370 | 102 | struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, |
9a1f8b34 | 103 | struct i2c_adapter *adapter, const char *client_type, |
53dacb15 | 104 | u8 addr, const unsigned short *probe_addrs); |
f0222c7d | 105 | |
f0222c7d HV |
106 | struct i2c_board_info; |
107 | ||
108 | struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, | |
9a1f8b34 LP |
109 | struct i2c_adapter *adapter, struct i2c_board_info *info, |
110 | const unsigned short *probe_addrs); | |
f0222c7d | 111 | |
9d380adf | 112 | /* Initialize a v4l2_subdev with data from an i2c_client struct */ |
dd99120c HV |
113 | void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, |
114 | const struct v4l2_subdev_ops *ops); | |
ab373190 HV |
115 | /* Return i2c client address of v4l2_subdev. */ |
116 | unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd); | |
dd99120c | 117 | |
c7d29e2f HV |
118 | enum v4l2_i2c_tuner_type { |
119 | ADDRS_RADIO, /* Radio tuner addresses */ | |
120 | ADDRS_DEMOD, /* Demod tuner addresses */ | |
121 | ADDRS_TV, /* TV tuner addresses */ | |
122 | /* TV tuner addresses if demod is present, this excludes | |
123 | addresses used by the demodulator from the list of | |
124 | candidates. */ | |
125 | ADDRS_TV_WITH_DEMOD, | |
126 | }; | |
127 | /* Return a list of I2C tuner addresses to probe. Use only if the tuner | |
128 | addresses are unknown. */ | |
129 | const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type); | |
130 | ||
8ffbc655 | 131 | /* ------------------------------------------------------------------------- */ |
85e09219 DB |
132 | |
133 | /* SPI Helper functions */ | |
134 | #if defined(CONFIG_SPI) | |
135 | ||
136 | #include <linux/spi/spi.h> | |
137 | ||
138 | struct spi_device; | |
139 | ||
140 | /* Load an spi module and return an initialized v4l2_subdev struct. | |
141 | The client_type argument is the name of the chip that's on the adapter. */ | |
142 | struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev, | |
143 | struct spi_master *master, struct spi_board_info *info); | |
144 | ||
9d380adf | 145 | /* Initialize a v4l2_subdev with data from an spi_device struct */ |
85e09219 DB |
146 | void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, |
147 | const struct v4l2_subdev_ops *ops); | |
148 | #endif | |
149 | ||
150 | /* ------------------------------------------------------------------------- */ | |
8ffbc655 | 151 | |
6c31e598 HV |
152 | /* Note: these remaining ioctls/structs should be removed as well, but they are |
153 | still used in tuner-simple.c (TUNER_SET_CONFIG), cx18/ivtv (RESET) and | |
154 | v4l2-int-device.h (v4l2_routing). To remove these ioctls some more cleanup | |
155 | is needed in those modules. */ | |
b2f0648f | 156 | |
78a3b4db | 157 | /* s_config */ |
7f171123 MCC |
158 | struct v4l2_priv_tun_config { |
159 | int tuner; | |
160 | void *priv; | |
161 | }; | |
7f171123 | 162 | #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) |
757d2505 | 163 | |
6c31e598 HV |
164 | #define VIDIOC_INT_RESET _IOW ('d', 102, u32) |
165 | ||
757d2505 HV |
166 | struct v4l2_routing { |
167 | u32 input; | |
168 | u32 output; | |
169 | }; | |
1b6f1d96 | 170 | |
b0d3159b TP |
171 | /* ------------------------------------------------------------------------- */ |
172 | ||
173 | /* Miscellaneous helper functions */ | |
174 | ||
175 | void v4l_bound_align_image(unsigned int *w, unsigned int wmin, | |
176 | unsigned int wmax, unsigned int walign, | |
177 | unsigned int *h, unsigned int hmin, | |
178 | unsigned int hmax, unsigned int halign, | |
179 | unsigned int salign); | |
3fd8e647 HV |
180 | |
181 | struct v4l2_discrete_probe { | |
182 | const struct v4l2_frmsize_discrete *sizes; | |
183 | int num_sizes; | |
184 | }; | |
185 | ||
186 | const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( | |
187 | const struct v4l2_discrete_probe *probe, | |
188 | s32 width, s32 height); | |
189 | ||
abd23295 SA |
190 | void v4l2_get_timestamp(struct timeval *tv); |
191 | ||
b2f0648f | 192 | #endif /* V4L2_COMMON_H_ */ |