Thanks Jonathan! > On an embedded board this would typically be in the board config > file. For example, see arch/arm/mach-pxa/imote2.c which has an sht15 > attached. The exact method of registration may be a bit architecture > specific but will look something like the relevant parts of that file. Yep, for e.g we have wrappers for api's like gpio_request etc. The real problem, however, seems to be that we have been using a distro which uses kernel 2.6.24. It does not have the "<linux/gpio.h>" and the "<regulater/consumer.h> which export regulator_register_notifier()/regulator_unregister_notifier() functions. So, i will have to look into how to backport this. THe gpio lib thing may be straightforward but i am way ignorant on the regulator/pmic infrastructure. It would greatly help you can shed some light on the regulator part and if there is any quick way to get around to backport the regulator specific functions. Thanks in advance for your help! -Alfred. -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html