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| author |   Jacopo Mondi <jacopo+renesas@jmondi.org> | 2017-04-05 16:07:19 +0200 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2017-04-11 11:01:33 +0200 |
| commit | 8c58f1a7a4b6d1d723bf25fef9d842d5a11200d0 (patch) | |
| tree | b94b6f5bf4151471067a9acf264e6e4b0e6f3441 /include/linux/pinctrl | |
| parent | pinctrl: aspeed: Fix unused-const-variable warnings (diff) | |
| download | linux-dev-8c58f1a7a4b6d1d723bf25fef9d842d5a11200d0.tar.xz linux-dev-8c58f1a7a4b6d1d723bf25fef9d842d5a11200d0.zip | |
pinctrl: generic: Add bi-directional and output-enable
Add bi-directional and output-enable pin configuration properties.
bi-directional allows to specify when a pin shall operate in input and
output mode at the same time. This is particularly useful in platforms
where input and output buffers have to be manually enabled.
output-enable is just syntactic sugar to specify that a pin shall
operate in output mode, ignoring the provided argument.
This pairs with input-enable pin configuration option.
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'include/linux/pinctrl')
| -rw-r--r-- | include/linux/pinctrl/pinconf-generic.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h index 7620eb127cff..279e3c5326e3 100644 --- a/include/linux/pinctrl/pinconf-generic.h +++ b/include/linux/pinctrl/pinconf-generic.h @@ -42,6 +42,8 @@ * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high * impedance to VDD). If the argument is != 0 pull-up is enabled, * if it is 0, pull-up is total, i.e. the pin is connected to VDD. + * @PIN_CONFIG_BIDIRECTIONAL: the pin will be configured to allow simultaneous + * input and output operations. * @PIN_CONFIG_DRIVE_OPEN_DRAIN: the pin will be driven with open drain (open * collector) which means it is usually wired with other output ports * which are then pulled up with an external resistor. Setting this @@ -96,6 +98,7 @@ enum pin_config_param { PIN_CONFIG_BIAS_PULL_DOWN, PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, PIN_CONFIG_BIAS_PULL_UP, + PIN_CONFIG_BIDIRECTIONAL, PIN_CONFIG_DRIVE_OPEN_DRAIN, PIN_CONFIG_DRIVE_OPEN_SOURCE, PIN_CONFIG_DRIVE_PUSH_PULL, |