On 10/2/18 2:38 AM, Linus Walleij wrote:
But as today the only driver that seems to be using valid_mask is msm, so perhaps a hack is something better and then when we have a second driver that requires it we figure out the real requirements. But it is definately your decision;)
Please note that MSM is supposed to be the *first* driver, not the only, driver that needs valid_mask. So let's not make any code changes that limit this feature to the MSM driver.
I would just add some exported function to gpiolib to do what you need so you can set up the valid_mask before calling gpiochip_add*.
I think that should be okay. Drivers should know pretty early whether they need valid_mask or not.
