On Fri, Apr 1, 2016 at 1:00 PM, Cristina Ciocan <[email protected]> wrote:
> This patch updates the gpio chip implementation in order to interact with > the pin control model: the chip contains reference to SOC data and > pin/group/community information is retrieved through the SOC reference. > > Signed-off-by: Cristina Ciocan <[email protected]> Patch applied with Mika's ACK. Cristina & Mika, can you provide feedback on a patch I sent last week: http://marc.info/?l=linux-gpio&m=145864063724362&w=2 This makes it possible for a GPIO driver to use native open drain if the hardware supports this instead of relying on switching the pin to input and thus expecting high impedance. With a backing pin control driver I think that maybe we need a pin control back-end performing things like this on behalf of the GPIO driver, something like pinctrl_gpio_set_config(unsigned gpio, enum pin_config_param param, u16 argument); So the pin controller can perform config on behalf of the GPIO driver (e.g. setting a backing pin to open drain). Do you think we will need this? Yours, Linus Walleij
