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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2008-10-13 12:38:03 +0200 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2008-10-13 12:38:03 +0200 |
| commit | 84186d8dda12362e5c3bd4b59888cade5f860d2b (patch) | |
| tree | b1f8fc0f1d539a2a3068a2685f5312d3f9b17a52 /linux/include | |
| parent | c48cf58021d869bbea55d4338a30ebbbf8ee5cdb (diff) | |
| download | mediapointer-dvb-s2-84186d8dda12362e5c3bd4b59888cade5f860d2b.tar.gz mediapointer-dvb-s2-84186d8dda12362e5c3bd4b59888cade5f860d2b.tar.bz2 | |
v4l2: add comment to the v4l2-i2c-drv headers.
From: Hans Verkuil <hverkuil@xs4all.nl>
Looking at these headers as they appear in the kernel makes you
wonder why it is done that way. Refer to the v4l-dvb repository
where the full unstripped header can be found to understand the
reasoning behind this.
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Diffstat (limited to 'linux/include')
| -rw-r--r-- | linux/include/media/v4l2-i2c-drv-legacy.h | 11 | ||||
| -rw-r--r-- | linux/include/media/v4l2-i2c-drv.h | 11 |
2 files changed, 22 insertions, 0 deletions
diff --git a/linux/include/media/v4l2-i2c-drv-legacy.h b/linux/include/media/v4l2-i2c-drv-legacy.h index 299b1c344..333ab5d5b 100644 --- a/linux/include/media/v4l2-i2c-drv-legacy.h +++ b/linux/include/media/v4l2-i2c-drv-legacy.h @@ -21,6 +21,17 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +/* NOTE: the full version of this header is in the v4l-dvb repository + * and allows v4l i2c drivers to be compiled on older kernels as well. + * The version of this header as it appears in the kernel is a stripped + * version (without all the backwards compatibility stuff) and so it + * looks a bit odd. + * + * If you look at the full version then you will understand the reason + * for introducing this header since you really don't want to have all + * the tricky backwards compatibility code in each and every i2c driver. + */ + struct v4l2_i2c_driver_data { const char * const name; int driverid; diff --git a/linux/include/media/v4l2-i2c-drv.h b/linux/include/media/v4l2-i2c-drv.h index 1feadb6c1..8279d07e3 100644 --- a/linux/include/media/v4l2-i2c-drv.h +++ b/linux/include/media/v4l2-i2c-drv.h @@ -21,6 +21,17 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +/* NOTE: the full version of this header is in the v4l-dvb repository + * and allows v4l i2c drivers to be compiled on older kernels as well. + * The version of this header as it appears in the kernel is a stripped + * version (without all the backwards compatibility stuff) and so it + * looks a bit odd. + * + * If you look at the full version then you will understand the reason + * for introducing this header since you really don't want to have all + * the tricky backwards compatibility code in each and every i2c driver. + */ + #ifndef __V4L2_I2C_DRV_H__ #define __V4L2_I2C_DRV_H__ |