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authorStephen Warren <swarren@nvidia.com>2012-03-02 21:05:47 +0100
committerLinus Walleij <linus.walleij@linaro.org>2012-03-05 11:22:59 +0100
commit6e5e959dde0d92d177f035652aeaa77f9330c9c6 (patch)
treec2d874df6a1c591b558a17591a1c8fbc2ba7a1e1 /scripts/extract-ikconfig
parentpinctrl: add usecount to pins for muxing (diff)
downloadlinux-6e5e959dde0d92d177f035652aeaa77f9330c9c6.tar.xz
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pinctrl: API changes to support multiple states per device
The API model is changed from: p = pinctrl_get(dev, "state1"); pinctrl_enable(p); ... pinctrl_disable(p); pinctrl_put(p); p = pinctrl_get(dev, "state2"); pinctrl_enable(p); ... pinctrl_disable(p); pinctrl_put(p); to this: p = pinctrl_get(dev); s1 = pinctrl_lookup_state(p, "state1"); s2 = pinctrl_lookup_state(p, "state2"); pinctrl_select_state(p, s1); ... pinctrl_select_state(p, s2); ... pinctrl_put(p); This allows devices to directly transition between states without disabling the pin controller programming and put()/get()ing the configuration data each time. This model will also better suit pinconf programming, which doesn't have a concept of "disable". The special-case hogging feature of pin controllers is re-written to use the regular APIs instead of special-case code. Hence, the pinmux-hogs debugfs file is removed; see the top-level pinctrl-handles files for equivalent data. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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