Hi, Linus

On 01/28/2016 07:14 PM, Linus Walleij wrote:

On Wed, Jan 27, 2016 at 11:05 AM, Bamvor Zhang Jian
[off-list ref] wrote:

quoted

From the api(ioctl GPIO_GET_CHIPINFO_IOCTL: gpiochip_info), it seems
that I could list all the gpiochips or list only one gpiochip. But
I could not list gpiochip belongs to one gpio driver.

I think you can get that information from parsing sysfs?

Yeap, I could get the directory:
"/sys/devices/platform/gpio-mockup/gpio/"

I notice that you mark the sysfs ABI as obsolete in these series. I
am not sure whether it is reasonable to read it from syfs when using
chardev.

Regars

Bamvor

Yours,
Linus Walleij