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| author | Christian Ruppert <christian.ruppert@abilis.com> | 2013-10-16 14:56:54 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2013-10-16 15:35:21 +0200 |
| commit | fe61052ae97a33c229a3ae7ad29e0c9b9ccada02 (patch) | |
| tree | a494037cd453302904667be243121b03ab9625bd /Documentation/pinctrl.txt | |
| parent | 5a92750133ffd998e92e4f7ed874fae61d67aeed (diff) | |
| download | linux-fe61052ae97a33c229a3ae7ad29e0c9b9ccada02.tar.bz2 | |
pinctrl: add documentation for pinctrl_get_group_pins()
This patch adds a short description of how to use the newly added
pinctrl_get_group_pins function to the pinctrl documentation.
Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/pinctrl.txt')
| -rw-r--r-- | Documentation/pinctrl.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/Documentation/pinctrl.txt b/Documentation/pinctrl.txt index c0ffd30eb55e..a7929cb47e7c 100644 --- a/Documentation/pinctrl.txt +++ b/Documentation/pinctrl.txt @@ -358,7 +358,12 @@ static struct pinctrl_gpio_range gpio_range = { .gc = &chip; }; -In this case the pin_base property will be ignored. +In this case the pin_base property will be ignored. If the name of a pin +group is known, the pins and npins elements of the above structure can be +initialised using the function pinctrl_get_group_pins(), e.g. for pin +group "foo": + +pinctrl_get_group_pins(pctl, "foo", &gpio_range.pins, &gpio_range.npins); When GPIO-specific functions in the pin control subsystem are called, these ranges will be used to look up the appropriate pin controller by inspecting |