Messages in this thread | | | From | Timur Tabi <> | Date | Fri, 5 Oct 2018 15:44:06 -0500 | Subject | Re: [PATCH v5 3/3] gpiolib: Show correct direction from the beginning |
| |
On Fri, Oct 5, 2018 at 11:54 AM Timur Tabi <timur@kernel.org> wrote: > If you want, just put a printk(... offset) in msm_gpio_get() and read > from a GPIO that you know you have access to, and make sure the > 'offset' is correct. > > Then try reading from a GPIO that you don't have access to, and make > sure you get a failure before msm_gpio_get() is called.
Just FYI, if you use sysfs to write to the GPIO, based on the kernel log you pasted, GPIO 362 in sysfs is actually pin 0 in the TLMM.
If you use gpio-test, it uses gpiolib which figures this all out for you. There should still be the gpio-test wiki page I wrote that tells you how to use it.
| |