Messages in this thread | | | Date | Mon, 7 Jul 2014 18:23:09 +0300 | From | Baruch Siach <> | Subject | Re: [PATCH v2 1/2] gpio: Add driver for Zynq GPIO controller |
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Hi Linux,
On Mon, Jul 07, 2014 at 04:51:56PM +0200, Linus Walleij wrote: > On Wed, Jun 18, 2014 at 5:36 PM, Sören Brinkmann <soren.brinkmann@xilinx.com> wrote: > > The first is, how is userspace supposed to find the correct offset for a > > GPIO pin. > > The sysfs interface to GPIO is *NOT* *GOOD* this is universally > agreed upon. > > This needs someone to step in and provide a replacement, my preferred > mechanism would be a /dev/gpiochip0/... hierarchy using char devices.
I really like the ability to control GPIOs from shell, both interactively and scripted. I find it useful for quick hardware level debugging, and for boot time scripting (mainly in initramfs). Do you intend to preserve this capability in the future? Will I need a special utility (or Busybox applet) to do this with char device ioctl?
baruch
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