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Hans Verkuilb2f06482005-11-13 16:07:55 -08001/*
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
Mauro Carvalho Chehab401998f2006-06-04 10:06:18 -030029#include <media/v4l2-dev.h>
30
Hans Verkuil7e8b09e2006-01-09 15:32:40 -020031/* 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
Mauro Carvalho Chehabcab462f2006-01-09 15:53:26 -020037#define v4l_client_printk(level, client, fmt, arg...) \
Hans Verkuil7e8b09e2006-01-09 15:32:40 -020038 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'. */
Mauro Carvalho Chehabf167cb42006-01-11 19:41:49 -020052#define v4l_dbg(level, debug, client, fmt, arg...) \
Hans Verkuil7e8b09e2006-01-09 15:32:40 -020053 do { \
54 if (debug >= (level)) \
55 v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
56 } while (0)
57
Hans Verkuil7e8b09e2006-01-09 15:32:40 -020058/* ------------------------------------------------------------------------- */
59
Hans Verkuildd991202008-11-23 12:19:45 -030060/* 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
Hans Verkuil9cb23182006-06-18 14:11:08 -030083/* Control helper functions */
84
85int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
Hans Verkuil513521e2010-12-29 14:25:52 -030086 const char * const *menu_items);
Hans Verkuil69028d72008-08-08 07:55:00 -030087const char *v4l2_ctrl_get_name(u32 id);
Hans Verkuil513521e2010-12-29 14:25:52 -030088const char * const *v4l2_ctrl_get_menu(u32 id);
Hans Verkuil9cb23182006-06-18 14:11:08 -030089int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
Hans Verkuil9cb23182006-06-18 14:11:08 -030090int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu,
Hans Verkuil513521e2010-12-29 14:25:52 -030091 struct v4l2_queryctrl *qctrl, const char * const *menu_items);
Hans Verkuil1e551262008-08-08 08:34:19 -030092#define V4L2_CTRL_MENU_IDS_END (0xffffffff)
93int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids);
Hans Verkuil2ba58892009-02-13 10:57:48 -030094
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. */
Hans Verkuil9cb23182006-06-18 14:11:08 -030099u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
100
101/* ------------------------------------------------------------------------- */
102
Hans Verkuilf3d092b2007-02-23 20:55:14 -0300103/* Register/chip ident helper function */
104
105struct i2c_client; /* forward reference */
Hans Verkuilaecde8b2008-12-30 07:14:19 -0300106int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match);
107int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
Hans Verkuil3434eb72007-04-27 12:31:08 -0300108 u32 ident, u32 revision);
Hans Verkuilaecde8b2008-12-30 07:14:19 -0300109int v4l2_chip_match_host(const struct v4l2_dbg_match *match);
Hans Verkuilf3d092b2007-02-23 20:55:14 -0300110
111/* ------------------------------------------------------------------------- */
112
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300113/* I2C Helper functions */
Hans Verkuil8ffbc652007-09-12 08:32:50 -0300114
115struct i2c_driver;
116struct i2c_adapter;
117struct i2c_client;
Jean Delvared2653e92008-04-29 23:11:39 +0200118struct i2c_device_id;
Hans Verkuildd991202008-11-23 12:19:45 -0300119struct v4l2_device;
120struct v4l2_subdev;
121struct v4l2_subdev_ops;
Hans Verkuil8ffbc652007-09-12 08:32:50 -0300122
Hans Verkuil8ffbc652007-09-12 08:32:50 -0300123
Hans Verkuildd991202008-11-23 12:19:45 -0300124/* Load an i2c module and return an initialized v4l2_subdev struct.
Hans Verkuildd991202008-11-23 12:19:45 -0300125 The client_type argument is the name of the chip that's on the adapter. */
Hans Verkuil3c7c9372011-01-08 07:08:02 -0300126struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev,
Laurent Pinchart9a1f8b32010-09-24 10:16:44 -0300127 struct i2c_adapter *adapter, const char *client_type,
Hans Verkuilf0222c72009-06-09 17:12:33 -0300128 u8 addr, const unsigned short *probe_addrs);
129
130struct i2c_board_info;
131
132struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
Laurent Pinchart9a1f8b32010-09-24 10:16:44 -0300133 struct i2c_adapter *adapter, struct i2c_board_info *info,
134 const unsigned short *probe_addrs);
Hans Verkuilf0222c72009-06-09 17:12:33 -0300135
Hans Verkuildd991202008-11-23 12:19:45 -0300136/* Initialize an v4l2_subdev with data from an i2c_client struct */
137void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
138 const struct v4l2_subdev_ops *ops);
Hans Verkuilab373192009-02-21 18:08:41 -0300139/* Return i2c client address of v4l2_subdev. */
140unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd);
Hans Verkuildd991202008-11-23 12:19:45 -0300141
Hans Verkuilc7d29e22009-01-18 19:37:59 -0300142enum 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. */
153const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
154
Hans Verkuil8ffbc652007-09-12 08:32:50 -0300155/* ------------------------------------------------------------------------- */
156
Dmitri Belimov85e09212010-03-23 11:23:29 -0300157/* SPI Helper functions */
158#if defined(CONFIG_SPI)
159
160#include <linux/spi/spi.h>
161
162struct 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. */
166struct 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 */
170void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
171 const struct v4l2_subdev_ops *ops);
172#endif
173
174/* ------------------------------------------------------------------------- */
175
Hans Verkuil6c31e592009-04-02 11:37:41 -0300176/* 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. */
Hans Verkuil7e8b09e2006-01-09 15:32:40 -0200180
Hans Verkuil78a3b4d2009-04-01 03:41:09 -0300181/* s_config */
Mauro Carvalho Chehab7f171122007-10-18 19:56:47 -0300182struct v4l2_priv_tun_config {
183 int tuner;
184 void *priv;
185};
Mauro Carvalho Chehab7f171122007-10-18 19:56:47 -0300186#define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config)
Hans Verkuil757d2502006-01-23 17:11:10 -0200187
Hans Verkuil6c31e592009-04-02 11:37:41 -0300188#define VIDIOC_INT_RESET _IOW ('d', 102, u32)
189
Hans Verkuil757d2502006-01-23 17:11:10 -0200190struct v4l2_routing {
191 u32 input;
192 u32 output;
193};
Hans Verkuil1b6f1d92009-02-13 07:48:21 -0300194
Trent Piephob0d31592009-05-30 21:45:46 -0300195/* ------------------------------------------------------------------------- */
196
197/* Miscellaneous helper functions */
198
199void 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);
Muralidharan Karicheri2e535ed2009-12-10 04:39:47 -0300204int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info);
Hans Verkuil3fd8e642010-09-30 09:29:37 -0300205
206struct v4l2_discrete_probe {
207 const struct v4l2_frmsize_discrete *sizes;
208 int num_sizes;
209};
210
211const struct v4l2_frmsize_discrete *v4l2_find_nearest_format(
212 const struct v4l2_discrete_probe *probe,
213 s32 width, s32 height);
214
Hans Verkuilb2f06482005-11-13 16:07:55 -0800215#endif /* V4L2_COMMON_H_ */