11 Sep
2018
11 Sep
'18
7:03 p.m.
On 09/11/2018 01:31 AM, Patrice CHOTARD wrote:
Hi Michal
On 09/11/2018 07:51 AM, Michal Simek wrote:
On 10.9.2018 18:11, Patrice Chotard wrote:
This series :
- Add new gpio ops get_alt_function
- Add get_function and get_alt_function support to stm32 gpio driver
- Add get_alt_function test
I went quickly over this series and TBH I am not getting what this is for. It looks like that this is the part of pinmux.
Can you please elaborate more what this is for?
Currently, get_function callback returns the state of a gpio (GPIOF_INPUT, GPIOF_OUTPUT or GPIO_FUNC).
If a pin's state is GPIO_FUNC, it's useful to know which alternate function is selected for debug purpose.
This sounds like pinmux not GPIO. There should be a pinmux printing command to dump the pinmux state; the GPIO command shouldn't know about it.