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| author | Jean Delvare <khali@linux-fr.org> | 2010-08-11 18:20:56 +0200 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2010-08-11 18:20:56 +0200 |
| commit | 9a94241afcc9a481691a9c29b7460217925b59b8 (patch) | |
| tree | 7f2d42935422a228686bcd8680dc97ff8a1005bc /include/linux/i2c.h | |
| parent | f1c2e33c295de423db5740647bfaa5e2ad139192 (diff) | |
| download | lwn-9a94241afcc9a481691a9c29b7460217925b59b8.tar.gz lwn-9a94241afcc9a481691a9c29b7460217925b59b8.zip | |
i2c: Add support for custom probe function
The probe method used by i2c_new_probed_device() may not be suitable
for all cases. Let the caller provide its own, optional probe
function.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 38dd4025aa4e..59a9f3cdc0b5 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -284,12 +284,15 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info); /* If you don't know the exact address of an I2C device, use this variant * instead, which can probe for device presence in a list of possible - * addresses. + * addresses. The "probe" callback function is optional. If it is provided, + * it must return 1 on successful probe, 0 otherwise. If it is not provided, + * a default probing method is used. */ extern struct i2c_client * i2c_new_probed_device(struct i2c_adapter *adap, struct i2c_board_info *info, - unsigned short const *addr_list); + unsigned short const *addr_list, + int (*probe)(struct i2c_adapter *, unsigned short addr)); /* For devices that use several addresses, use i2c_new_dummy() to make * client handles for the extra addresses. |