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Commit | Line | Data |
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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 | ||
29 | #include <media/v4l2-dev.h> | |
30 | ||
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 | ||
37 | #define v4l_client_printk(level, client, fmt, arg...) \ | |
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'. */ | |
52 | #define v4l_dbg(level, debug, client, fmt, arg...) \ | |
53 | do { \ | |
54 | if (debug >= (level)) \ | |
55 | v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \ | |
56 | } while (0) | |
57 | ||
58 | /* ------------------------------------------------------------------------- */ | |
59 | ||
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 | ||
83 | /* Control helper functions */ | |
84 | ||
85 | int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl, | |
86 | const char * const *menu_items); | |
87 | const char *v4l2_ctrl_get_name(u32 id); | |
88 | const char * const *v4l2_ctrl_get_menu(u32 id); | |
89 | int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def); | |
90 | int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu, | |
91 | struct v4l2_queryctrl *qctrl, const char * const *menu_items); | |
92 | #define V4L2_CTRL_MENU_IDS_END (0xffffffff) | |
93 | int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids); | |
94 | ||
95 | /* Note: ctrl_classes points to an array of u32 pointers. Each u32 array is a | |
96 | 0-terminated array of control IDs. Each array must be sorted low to high | |
97 | and belong to the same control class. The array of u32 pointers must also | |
98 | be sorted, from low class IDs to high class IDs. */ | |
99 | u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id); | |
100 | ||
101 | /* ------------------------------------------------------------------------- */ | |
102 | ||
103 | /* Register/chip ident helper function */ | |
104 | ||
105 | struct i2c_client; /* forward reference */ | |
106 | int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match); | |
107 | int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip, | |
108 | u32 ident, u32 revision); | |
109 | int v4l2_chip_match_host(const struct v4l2_dbg_match *match); | |
110 | ||
111 | /* ------------------------------------------------------------------------- */ | |
112 | ||
113 | /* I2C Helper functions */ | |
114 | ||
115 | struct i2c_driver; | |
116 | struct i2c_adapter; | |
117 | struct i2c_client; | |
118 | struct i2c_device_id; | |
119 | struct v4l2_device; | |
120 | struct v4l2_subdev; | |
121 | struct v4l2_subdev_ops; | |
122 | ||
123 | ||
124 | /* Load an i2c module and return an initialized v4l2_subdev struct. | |
125 | The client_type argument is the name of the chip that's on the adapter. */ | |
126 | struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev, | |
127 | struct i2c_adapter *adapter, const char *client_type, | |
128 | u8 addr, const unsigned short *probe_addrs); | |
129 | ||
130 | struct i2c_board_info; | |
131 | ||
132 | struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, | |
133 | struct i2c_adapter *adapter, struct i2c_board_info *info, | |
134 | const unsigned short *probe_addrs); | |
135 | ||
136 | /* Initialize a v4l2_subdev with data from an i2c_client struct */ | |
137 | void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client, | |
138 | const struct v4l2_subdev_ops *ops); | |
139 | /* Return i2c client address of v4l2_subdev. */ | |
140 | unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd); | |
141 | ||
142 | enum v4l2_i2c_tuner_type { | |
143 | ADDRS_RADIO, /* Radio tuner addresses */ | |
144 | ADDRS_DEMOD, /* Demod tuner addresses */ | |
145 | ADDRS_TV, /* TV tuner addresses */ | |
146 | /* TV tuner addresses if demod is present, this excludes | |
147 | addresses used by the demodulator from the list of | |
148 | candidates. */ | |
149 | ADDRS_TV_WITH_DEMOD, | |
150 | }; | |
151 | /* Return a list of I2C tuner addresses to probe. Use only if the tuner | |
152 | addresses are unknown. */ | |
153 | const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type); | |
154 | ||
155 | /* ------------------------------------------------------------------------- */ | |
156 | ||
157 | /* SPI Helper functions */ | |
158 | #if defined(CONFIG_SPI) | |
159 | ||
160 | #include <linux/spi/spi.h> | |
161 | ||
162 | struct spi_device; | |
163 | ||
164 | /* Load an spi module and return an initialized v4l2_subdev struct. | |
165 | The client_type argument is the name of the chip that's on the adapter. */ | |
166 | struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev, | |
167 | struct spi_master *master, struct spi_board_info *info); | |
168 | ||
169 | /* Initialize a v4l2_subdev with data from an spi_device struct */ | |
170 | void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi, | |
171 | const struct v4l2_subdev_ops *ops); | |
172 | #endif | |
173 | ||
174 | /* ------------------------------------------------------------------------- */ | |
175 | ||
176 | /* Note: these remaining ioctls/structs should be removed as well, but they are | |
177 | still used in tuner-simple.c (TUNER_SET_CONFIG), cx18/ivtv (RESET) and | |
178 | v4l2-int-device.h (v4l2_routing). To remove these ioctls some more cleanup | |
179 | is needed in those modules. */ | |
180 | ||
181 | /* s_config */ | |
182 | struct v4l2_priv_tun_config { | |
183 | int tuner; | |
184 | void *priv; | |
185 | }; | |
186 | #define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config) | |
187 | ||
188 | #define VIDIOC_INT_RESET _IOW ('d', 102, u32) | |
189 | ||
190 | struct v4l2_routing { | |
191 | u32 input; | |
192 | u32 output; | |
193 | }; | |
194 | ||
195 | /* ------------------------------------------------------------------------- */ | |
196 | ||
197 | /* Miscellaneous helper functions */ | |
198 | ||
199 | void v4l_bound_align_image(unsigned int *w, unsigned int wmin, | |
200 | unsigned int wmax, unsigned int walign, | |
201 | unsigned int *h, unsigned int hmin, | |
202 | unsigned int hmax, unsigned int halign, | |
203 | unsigned int salign); | |
204 | ||
205 | struct v4l2_discrete_probe { | |
206 | const struct v4l2_frmsize_discrete *sizes; | |
207 | int num_sizes; | |
208 | }; | |
209 | ||
210 | const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( | |
211 | const struct v4l2_discrete_probe *probe, | |
212 | s32 width, s32 height); | |
213 | ||
214 | bool v4l_match_dv_timings(const struct v4l2_dv_timings *t1, | |
215 | const struct v4l2_dv_timings *t2, | |
216 | unsigned pclock_delta); | |
217 | ||
218 | bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, | |
219 | u32 polarities, struct v4l2_dv_timings *fmt); | |
220 | ||
221 | bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync, | |
222 | u32 polarities, struct v4l2_fract aspect, | |
223 | struct v4l2_dv_timings *fmt); | |
224 | ||
225 | struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait); | |
226 | ||
227 | void v4l2_get_timestamp(struct timeval *tv); | |
228 | ||
229 | #endif /* V4L2_COMMON_H_ */ |