229 lines
8.1 KiB
C
229 lines
8.1 KiB
C
/*
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v4l2 common internal API header
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This header contains internal shared ioctl definitions for use by the
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internal low-level v4l2 drivers.
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Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal
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define,
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Copyright (C) 2005 Hans Verkuil <hverkuil@xs4all.nl>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef V4L2_COMMON_H_
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#define V4L2_COMMON_H_
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#include <media/v4l2-dev.h>
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/* Common printk constucts for v4l-i2c drivers. These macros create a unique
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prefix consisting of the driver name, the adapter number and the i2c
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address. */
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#define v4l_printk(level, name, adapter, addr, fmt, arg...) \
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printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)
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#define v4l_client_printk(level, client, fmt, arg...) \
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v4l_printk(level, (client)->driver->driver.name, (client)->adapter, \
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(client)->addr, fmt , ## arg)
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#define v4l_err(client, fmt, arg...) \
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v4l_client_printk(KERN_ERR, client, fmt , ## arg)
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#define v4l_warn(client, fmt, arg...) \
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v4l_client_printk(KERN_WARNING, client, fmt , ## arg)
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#define v4l_info(client, fmt, arg...) \
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v4l_client_printk(KERN_INFO, client, fmt , ## arg)
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/* These three macros assume that the debug level is set with a module
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parameter called 'debug'. */
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#define v4l_dbg(level, debug, client, fmt, arg...) \
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do { \
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if (debug >= (level)) \
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v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \
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} while (0)
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/* ------------------------------------------------------------------------- */
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/* These printk constructs can be used with v4l2_device and v4l2_subdev */
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#define v4l2_printk(level, dev, fmt, arg...) \
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printk(level "%s: " fmt, (dev)->name , ## arg)
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#define v4l2_err(dev, fmt, arg...) \
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v4l2_printk(KERN_ERR, dev, fmt , ## arg)
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#define v4l2_warn(dev, fmt, arg...) \
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v4l2_printk(KERN_WARNING, dev, fmt , ## arg)
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#define v4l2_info(dev, fmt, arg...) \
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v4l2_printk(KERN_INFO, dev, fmt , ## arg)
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/* These three macros assume that the debug level is set with a module
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parameter called 'debug'. */
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#define v4l2_dbg(level, debug, dev, fmt, arg...) \
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do { \
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if (debug >= (level)) \
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v4l2_printk(KERN_DEBUG, dev, fmt , ## arg); \
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} while (0)
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/* ------------------------------------------------------------------------- */
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/* Control helper functions */
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int v4l2_ctrl_check(struct v4l2_ext_control *ctrl, struct v4l2_queryctrl *qctrl,
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const char * const *menu_items);
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const char *v4l2_ctrl_get_name(u32 id);
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const char * const *v4l2_ctrl_get_menu(u32 id);
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int v4l2_ctrl_query_fill(struct v4l2_queryctrl *qctrl, s32 min, s32 max, s32 step, s32 def);
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int v4l2_ctrl_query_menu(struct v4l2_querymenu *qmenu,
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struct v4l2_queryctrl *qctrl, const char * const *menu_items);
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#define V4L2_CTRL_MENU_IDS_END (0xffffffff)
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int v4l2_ctrl_query_menu_valid_items(struct v4l2_querymenu *qmenu, const u32 *ids);
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/* Note: ctrl_classes points to an array of u32 pointers. Each u32 array is a
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0-terminated array of control IDs. Each array must be sorted low to high
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and belong to the same control class. The array of u32 pointers must also
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be sorted, from low class IDs to high class IDs. */
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u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
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/* ------------------------------------------------------------------------- */
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/* Register/chip ident helper function */
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struct i2c_client; /* forward reference */
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int v4l2_chip_match_i2c_client(struct i2c_client *c, const struct v4l2_dbg_match *match);
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int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_dbg_chip_ident *chip,
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u32 ident, u32 revision);
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int v4l2_chip_match_host(const struct v4l2_dbg_match *match);
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/* ------------------------------------------------------------------------- */
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/* I2C Helper functions */
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struct i2c_driver;
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struct i2c_adapter;
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struct i2c_client;
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struct i2c_device_id;
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struct v4l2_device;
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struct v4l2_subdev;
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struct v4l2_subdev_ops;
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/* Load an i2c module and return an initialized v4l2_subdev struct.
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The client_type argument is the name of the chip that's on the adapter. */
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struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev,
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struct i2c_adapter *adapter, const char *client_type,
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u8 addr, const unsigned short *probe_addrs);
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struct i2c_board_info;
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struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev,
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struct i2c_adapter *adapter, struct i2c_board_info *info,
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const unsigned short *probe_addrs);
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/* Initialize a v4l2_subdev with data from an i2c_client struct */
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void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
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const struct v4l2_subdev_ops *ops);
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/* Return i2c client address of v4l2_subdev. */
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unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd);
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enum v4l2_i2c_tuner_type {
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ADDRS_RADIO, /* Radio tuner addresses */
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ADDRS_DEMOD, /* Demod tuner addresses */
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ADDRS_TV, /* TV tuner addresses */
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/* TV tuner addresses if demod is present, this excludes
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addresses used by the demodulator from the list of
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candidates. */
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ADDRS_TV_WITH_DEMOD,
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};
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/* Return a list of I2C tuner addresses to probe. Use only if the tuner
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addresses are unknown. */
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const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
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/* ------------------------------------------------------------------------- */
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/* SPI Helper functions */
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#if defined(CONFIG_SPI)
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#include <linux/spi/spi.h>
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struct spi_device;
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/* Load an spi module and return an initialized v4l2_subdev struct.
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The client_type argument is the name of the chip that's on the adapter. */
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struct v4l2_subdev *v4l2_spi_new_subdev(struct v4l2_device *v4l2_dev,
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struct spi_master *master, struct spi_board_info *info);
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/* Initialize a v4l2_subdev with data from an spi_device struct */
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void v4l2_spi_subdev_init(struct v4l2_subdev *sd, struct spi_device *spi,
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const struct v4l2_subdev_ops *ops);
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#endif
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/* ------------------------------------------------------------------------- */
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/* Note: these remaining ioctls/structs should be removed as well, but they are
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still used in tuner-simple.c (TUNER_SET_CONFIG), cx18/ivtv (RESET) and
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v4l2-int-device.h (v4l2_routing). To remove these ioctls some more cleanup
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is needed in those modules. */
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/* s_config */
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struct v4l2_priv_tun_config {
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int tuner;
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void *priv;
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};
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#define TUNER_SET_CONFIG _IOW('d', 92, struct v4l2_priv_tun_config)
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#define VIDIOC_INT_RESET _IOW ('d', 102, u32)
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struct v4l2_routing {
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u32 input;
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u32 output;
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};
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/* ------------------------------------------------------------------------- */
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/* Miscellaneous helper functions */
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void v4l_bound_align_image(unsigned int *w, unsigned int wmin,
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unsigned int wmax, unsigned int walign,
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unsigned int *h, unsigned int hmin,
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unsigned int hmax, unsigned int halign,
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unsigned int salign);
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int v4l_fill_dv_preset_info(u32 preset, struct v4l2_dv_enum_preset *info);
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struct v4l2_discrete_probe {
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const struct v4l2_frmsize_discrete *sizes;
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int num_sizes;
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};
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const struct v4l2_frmsize_discrete *v4l2_find_nearest_format(
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const struct v4l2_discrete_probe *probe,
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s32 width, s32 height);
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bool v4l_match_dv_timings(const struct v4l2_dv_timings *t1,
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const struct v4l2_dv_timings *t2,
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unsigned pclock_delta);
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bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
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u32 polarities, struct v4l2_dv_timings *fmt);
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bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
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u32 polarities, struct v4l2_fract aspect,
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struct v4l2_dv_timings *fmt);
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struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
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#endif /* V4L2_COMMON_H_ */
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