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Per recent updates to Documentation/gpio.txt, gpiolib drivers should inform pinctrl when a GPIO is requested. pinctrl then marks that pin as in-use for that GPIO function. When an SoC muxes pins in a group, it's quite possible for the group to contain e.g. 6 pins, but only 4 of them actually be needed by the HW module that's mux'd to them. In this case, the other 2 pins could be used as GPIOs. However, pinctrl marks all the pins within the group as in-use by the selected mux function. To allow the expected gpiolib interaction, separate the concepts of pin ownership into two parts: One for the mux function and one for GPIO usage. Finally, allow those two ownerships to exist in parallel. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
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| .. | ||
| core.c | ||
| core.h | ||
| Kconfig | ||
| Makefile | ||
| pinconf.c | ||
| pinconf.h | ||
| pinctrl-coh901.c | ||
| pinctrl-mmp2.c | ||
| pinctrl-pxa3xx.c | ||
| pinctrl-pxa3xx.h | ||
| pinctrl-pxa168.c | ||
| pinctrl-pxa910.c | ||
| pinctrl-sirf.c | ||
| pinctrl-tegra.c | ||
| pinctrl-tegra.h | ||
| pinctrl-tegra20.c | ||
| pinctrl-tegra30.c | ||
| pinctrl-u300.c | ||
| pinmux.c | ||
| pinmux.h | ||