śr., 27 maj 2020 o 07:58 Linus Walleij [off-list ref] napisał(a):

On Mon, May 25, 2020 at 4:19 PM Kent Gibson [off-list ref] wrote:

quoted

quoted

quoted

+struct gpioline_config {
+       __u8 default_values[GPIOLINES_MAX];

So 32 bytes

Actually that one is 64 bytes, which is the same as v1, i.e. GPIOLINES_MAX
is the same as GPIOHANDLES_MAX - just renamed.

On the subject of values, is there any reason to use a byte for each line
rather value than a bit?

Not really, other than making things simple for userspace.

I'm in favor of using bits here. I think we can rely on libgpiod to
make things simple for user-space, the kernel interface can be as
brief as possible.

Bart