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Originally the intention was to switch to the new style i2c API starting with the introduction of the API in 2.6.22. However, the i2c_new_probed_device() function has a lethal bug that wasn't fixed until 2.6.25. Or more accurately, it was only fixed in the stable series of 2.6.25 and 2.6.26. Given the fact that the new i2c API also changed starting with 2.6.26 (the addition of i2c_device_id), it is easiest to switch APIs starting with 2.6.26. This patch updates all the legacy code accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/*
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* v4l2-i2c-drv.h - contains I2C handling code that's identical for
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* all V4L2 I2C drivers. Use this header if the
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* I2C driver is only used by drivers converted
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* to the bus-based I2C API.
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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*
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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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*
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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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*
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* NOTE: the full version of this header is in the v4l-dvb repository
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* and allows v4l i2c drivers to be compiled on older kernels as well.
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* The version of this header as it appears in the kernel is a stripped
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* version (without all the backwards compatibility stuff) and so it
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* looks a bit odd.
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*
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* If you look at the full version then you will understand the reason
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* for introducing this header since you really don't want to have all
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* the tricky backwards compatibility code in each and every i2c driver.
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*/
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#ifndef __V4L2_I2C_DRV_H__
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#define __V4L2_I2C_DRV_H__
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#include <media/v4l2-common.h>
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struct v4l2_i2c_driver_data {
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const char * const name;
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int (*command)(struct i2c_client *client, unsigned int cmd, void *arg);
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int (*probe)(struct i2c_client *client, const struct i2c_device_id *id);
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int (*remove)(struct i2c_client *client);
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int (*suspend)(struct i2c_client *client, pm_message_t state);
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int (*resume)(struct i2c_client *client);
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const struct i2c_device_id *id_table;
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};
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static struct v4l2_i2c_driver_data v4l2_i2c_data;
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static struct i2c_driver v4l2_i2c_driver;
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/* Bus-based I2C implementation for kernels >= 2.6.26 */
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static int __init v4l2_i2c_drv_init(void)
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{
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v4l2_i2c_driver.driver.name = v4l2_i2c_data.name;
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v4l2_i2c_driver.command = v4l2_i2c_data.command;
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v4l2_i2c_driver.probe = v4l2_i2c_data.probe;
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v4l2_i2c_driver.remove = v4l2_i2c_data.remove;
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v4l2_i2c_driver.suspend = v4l2_i2c_data.suspend;
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v4l2_i2c_driver.resume = v4l2_i2c_data.resume;
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v4l2_i2c_driver.id_table = v4l2_i2c_data.id_table;
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return i2c_add_driver(&v4l2_i2c_driver);
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}
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static void __exit v4l2_i2c_drv_cleanup(void)
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{
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i2c_del_driver(&v4l2_i2c_driver);
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}
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module_init(v4l2_i2c_drv_init);
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module_exit(v4l2_i2c_drv_cleanup);
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#endif /* __V4L2_I2C_DRV_H__ */
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