diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-02-23 20:55:14 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-03-01 13:09:44 -0200 |
| commit | f3d092b84a855c44914fea0648695bef7d751266 (patch) | |
| tree | 3ae7a87e18e83be2a39e00a2ae29f26299d1c272 /drivers/media/video/v4l2-common.c | |
| parent | d55c7aec666658495e5b57a6b194c8c2a1ac255f (diff) | |
V4L/DVB (5304): Improve chip matching in v4l2_register
The chip matching in struct v4l2_register for VIDIOC_DBG_G/S_REGISTER
was rather primitive. It could not be extended to other busses besides
i2c and it lacked a way to.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/v4l2-common.c')
| -rw-r--r-- | drivers/media/video/v4l2-common.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c index ddfd80c5618..3506cb66711 100644 --- a/drivers/media/video/v4l2-common.c +++ b/drivers/media/video/v4l2-common.c @@ -51,6 +51,7 @@ #include <linux/mm.h> #include <linux/string.h> #include <linux/errno.h> +#include <linux/i2c.h> #include <asm/uaccess.h> #include <asm/system.h> #include <asm/pgtable.h> @@ -947,6 +948,32 @@ u32 v4l2_ctrl_next(const u32 * const * ctrl_classes, u32 id) return **ctrl_classes; } +int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 match_type, u32 match_chip) +{ + switch (match_type) { + case V4L2_CHIP_MATCH_ALWAYS: + return 1; + case V4L2_CHIP_MATCH_I2C_DRIVER: + return (c != NULL && c->driver != NULL && c->driver->id == match_chip); + case V4L2_CHIP_MATCH_I2C_ADDR: + return (c != NULL && c->addr == match_chip); + default: + return 0; + } +} + +int v4l2_chip_match_host(u32 match_type, u32 match_chip) +{ + switch (match_type) { + case V4L2_CHIP_MATCH_ALWAYS: + return 1; + case V4L2_CHIP_MATCH_HOST: + return match_chip == 0; + default: + return 0; + } +} + /* ----------------------------------------------------------------- */ EXPORT_SYMBOL(v4l2_norm_to_name); @@ -970,6 +997,9 @@ EXPORT_SYMBOL(v4l2_ctrl_query_menu); EXPORT_SYMBOL(v4l2_ctrl_query_fill); EXPORT_SYMBOL(v4l2_ctrl_query_fill_std); +EXPORT_SYMBOL(v4l2_chip_match_i2c_client); +EXPORT_SYMBOL(v4l2_chip_match_host); + /* * Local variables: * c-basic-offset: 8 |