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drivers: gpio: move non-standard dts flags to be soc specific

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Reserve the upper 8 bits of gpio_dt_flags_t for SoC specific flags and
move the non-standard, hardware-specific GPIO devicetree flags (IO
voltage level, drive strength, debounce filter) from the generic
dt-bindings/gpio/gpio.h header to SoC specific dt-bindings headers.

Some of the SoC specific dt-bindings flags take up more bits than
necessary in order to retain backwards compatibility with the deprecated
GPIO flags. The width of these fields can be reduced/optimized once the
deprecated flags are removed.

Remove hardcoded use of GPIO_INT_DEBOUNCE in GPIO client drivers. This
flag can now be set in the devicetree for boards/SoCs with debounce
filter support. The SoC specific debounce flags have had the _INT part
of their name removed since these flag must be passed to
gpio_pin_configure(), not gpio_pin_interrupt_configure().

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2021-10-27 14:52:31 +02:00 • committed by Anas Nashif
commit d4023b3c1b
34 changed files with 416 additions and 211 deletions
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15
drivers/gpio/gpio_pca953x.c
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@ -192,21 +192,6 @@ static int gpio_pca953x_config(const struct device *dev, gpio_pin_t pin,
return -EWOULDBLOCK;
}
/* Zephyr currently defines drive strength support based on
* the behavior and capabilities of the Nordic GPIO
* peripheral: strength defaults to low but can be set high,
* and is controlled independently for output levels.
*
* The PCA953X supports only high strength, and does not
* support different strengths for different levels.
*
* Until something more general is available reject any
* attempt to set a non-default drive strength.
*/
if ((flags & GPIO_DS_ALT) != 0) {
return -ENOTSUP;
}
/* Single Ended lines (Open drain and open source) not supported */
if ((flags & GPIO_SINGLE_ENDED) != 0) {
return -ENOTSUP;