linux-imx

/*

    v4l2 common internal API header

​

    This header contains internal shared ioctl definitions for use by the

    internal low-level v4l2 drivers.

    Each ioctl begins with VIDIOC_INT_ to clearly mark that it is an internal

    define,

​

    Copyright (C) 2005  Hans Verkuil <hverkuil@xs4all.nl>

​

    This program is free software; you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation; either version 2 of the License, or

    (at your option) any later version.

​

    This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

​

    You should have received a copy of the GNU General Public License

    along with this program; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

​

#ifndef V4L2_COMMON_H_

#define V4L2_COMMON_H_

​

#include <media/v4l2-dev.h>

​

/* Common printk constructs for v4l-i2c drivers. These macros create a unique

   prefix consisting of the driver name, the adapter number and the i2c

   address. */

#define v4l_printk(level, name, adapter, addr, fmt, arg...) \

    printk(level "%s %d-%04x: " fmt, name, i2c_adapter_id(adapter), addr , ## arg)

​

#define v4l_client_printk(level, client, fmt, arg...)               \

    v4l_printk(level, (client)->dev.driver->name, (client)->adapter, \

           (client)->addr, fmt , ## arg)

​

#define v4l_err(client, fmt, arg...) \

    v4l_client_printk(KERN_ERR, client, fmt , ## arg)

​

#define v4l_warn(client, fmt, arg...) \

    v4l_client_printk(KERN_WARNING, client, fmt , ## arg)

​

#define v4l_info(client, fmt, arg...) \

    v4l_client_printk(KERN_INFO, client, fmt , ## arg)

​

/* These three macros assume that the debug level is set with a module

   parameter called 'debug'. */

#define v4l_dbg(level, debug, client, fmt, arg...)               \

    do {                                     \

        if (debug >= (level))                        \

            v4l_client_printk(KERN_DEBUG, client, fmt , ## arg); \

    } while (0)

​

/* Add a version of v4l_dbg to be used on drivers using dev_foo() macros */

#define dev_dbg_lvl(__dev, __level, __debug, __fmt, __arg...)       \

    do {                                \

        if (__debug >= (__level))               \

            dev_printk(KERN_DEBUG, __dev, __fmt, ##__arg);  \

    } while (0)