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192 lines
6.4 KiB
192 lines
6.4 KiB
/* |
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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)->dev.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 function */ |
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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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/* ------------------------------------------------------------------------- */ |
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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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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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void v4l2_get_timestamp(struct timeval *tv); |
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#endif /* V4L2_COMMON_H_ */
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