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acpi: Tidy up documentation for struct acpi_gpio

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Some comments were provided after this patch was applied. Address them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2021-01-23 11:08:38 -07:00 committed by Bin Meng
parent 0751cda574
commit 8a655272d7
1 changed files with 5 additions and 4 deletions
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9
include/acpi/acpi_device.h
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@ -171,10 +171,11 @@ enum acpi_gpio_polarity {
* @io_restrict: I/O restriction setting
* @polarity: GPIO polarity
*
* Note that GpioIo doesn't have any means of Active Low / High setting, so a
* _DSD must be provided to mitigate this.
* Note that GpioIo() doesn't have any means of Active Low / High setting, so a
* _DSD must be provided to mitigate this. This parameter does not make sense
* for GpioInt() since it has its own means to define it.
*
* GpioIo doesn't properly communicate the initial state of the output pin,
* GpioIo() doesn't properly communicate the initial state of the output pin,
* thus Linux assumes the simple rule:
*
* Pull Bias Polarity Requested...
@ -184,7 +185,7 @@ enum acpi_gpio_polarity {
* assuming non-active (Polarity = !Pull Bias)
*
* Down Low as low, assuming active
* Down High as high, assuming non-active
* Down High as low, assuming non-active
* Up Low as high, assuming non-active
* Up High as high, assuming active
*