Messages in this thread | | | Date | Tue, 12 May 2015 10:27:03 +0200 | Subject | Re: [PATCH v2 08/23] gpio: remove gpiod_sysfs_set_active_low | From | Linus Walleij <> |
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On Mon, May 4, 2015 at 5:10 PM, Johan Hovold <johan@kernel.org> wrote:
> Remove gpiod_sysfs_set_active_low (and gpio_sysfs_set_active_low) which > allowed code to change the polarity of a gpio line even after it had > been exported through sysfs. > > Drivers should not care, and generally does not know, about gpio-line > polarity which is a hardware feature that needs to be described by > firmware. > > It is currently possible to define gpio-line polarity in device-tree and > acpi firmware or using platform data. Userspace can also change the > polarity through sysfs. > > Note that drivers using the legacy gpio interface could still use > GPIOF_ACTIVE_LOW to change the polarity before exporting the gpio. > > There are no in-kernel users of this interface. > > Cc: Jonathan Corbet <corbet@lwn.net> > Cc: Harry Wei <harryxiyou@gmail.com> > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@zh-kernel.org > Cc: linux-arch@vger.kernel.org > Signed-off-by: Johan Hovold <johan@kernel.org>
GOOD RIDDANCE.
Patch applied.
Yours, Linus Walleij
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