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authorStephen Warren <swarren@nvidia.com>2012-03-02 20:05:45 (GMT)
committerLinus Walleij <linus.walleij@linaro.org>2012-03-05 10:20:50 (GMT)
commit7ecdb16fe63e5b356335ebdc236adfb48cef31e1 (patch)
tree036d9939c64f98e1f85343f15c12ad83c9a2a890 /drivers/uio
parent57b676f9c1b7cd84397fe5a86c9bd2788ac4bd32 (diff)
downloadlinux-fsl-qoriq-7ecdb16fe63e5b356335ebdc236adfb48cef31e1.tar.xz
pinctrl: refactor struct pinctrl handling in core.c vs pinmux.c
This change separates two aspects of struct pinctrl: a) The data representation of the parsed mapping table, into: 1) The top-level struct pinctrl object, a single entity returned by pinctrl_get(). 2) The parsed version of each mapping table entry, struct pinctrl_setting, of which there is one per mapping table entry. b) The code that handles this; the code for (1) above is in core.c, and the code to parse/execute each entry in (2) above is in pinmux.c, while the iteration over multiple settings is lifted to core.c. This will allow the following future changes: 1) pinctrl_get() API rework, so that struct pinctrl represents all states for the device, and the device can select between them without calling put()/get() again. 2) To support that, a struct pinctrl_state object will be inserted into the data model between the struct pinctrl and struct pinctrl_setting. 3) The mapping table will be extended to allow specification of pin config settings too. To support this, struct pinctrl_setting will be enhanced to store either mux settings or config settings, and functions will be added to pinconf.c to parse/execute pin configuration settings. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Dong Aisheng <dong.aisheng@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/uio')
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