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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 an 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 an 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 | int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info); |
205 | |
206 | struct v4l2_discrete_probe { |
207 | const struct v4l2_frmsize_discrete *sizes; |
208 | int num_sizes; |
209 | }; |
210 | |
211 | const struct v4l2_frmsize_discrete *v4l2_find_nearest_format( |
212 | const struct v4l2_discrete_probe *probe, |
213 | s32 width, s32 height); |
214 | |
215 | #endif /* V4L2_COMMON_H_ */ |
216 |
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