On Wed, Sep 2, 2015 at 6:35 AM, Chris Read <chrisrfq@xxxxxxxxx> wrote: > On Wed, Sep 2, 2015 at 5:29 AM, Alexandre Courbot <gnurou@xxxxxxxxx> wrote: >> Since the GPIO sysfs allows you to request any GPIO that is not >> claimed by a kernel driver from userspace, is there a reason why you >> cannot simply run board-specific init scripts that request and >> configure the GPIOs you need? Once GPIO naming is merged, this should >> be as elegant as it gets for what you want to do. > > For many things this is true. There are some hardware aspects/parameters > of exporting that aren't controllable from userspace, such as whether or not > reversing the direction of a GPIO is safe. The original argument as to why kernel should handle hardware is to keep things safe and under control. I don't understand this argument really, should the kernel give you a gun but stop you from shooting yourself in the foot with it or what do you mean? Then the stance of kernel not to give out guns is better. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
