Introduce Pin Function Controller for Renesas R-Car family.
This first implementation support to set a given pin as gpio
or peripheral (GPSR), to set a peripheral function to a
pin (IPSR), to set pull-up, pull-down (PUEN, PUD).
In addition this driver allows to set driving capabilies(DRVCTRL).
Pins are identified thanks to the per SoC binding for
pin definition which also contains pin alternate function
parameters.
Some pins can also have driving capabilities, some have bias
capabilities.
In order to find the correct bias and drive registers pfc_r8a77951.c
describes the different registers.
Each SoCs or package will need to define getters
for these registers: pfc_rcar_get_bias_regs() and
pfc_rcar_get_drive_regs().
Signed-off-by: Julien Massot <julien.massot@iot.bzh>
Add initial support for nRF pin controller driver. The implementation in
this patch does not yet support any peripheral. Only states
representation and basic driver functionality is introduced.
Note:
The nrf_pin_configure function has been marked as __unused since it may
not be used in certain scenarios until all peripherals are supported by
the pinctrl driver. For example, if only UART/E is supported but the
board does not enable UART, the function will never get called. However,
that board will likely have other peripherals that will gain support in
the future.
Thanks to Marti Bolivar for bindings documentation.
Co-authored-by: Marti Bolivar <marti.bolivar@nordicsemi.no>
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Add initial version for STM32 pinctrl driver. Driver has been written
re-using many of the already existing parts in
drivers/pinmux/pinmux_stm32.c.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Add support for dynamic pin control, that is, allow to change device pin
configuration at runtime. Because no device de-initialization is
available yet, this API has limited usage options, e.g. modify pin
configuration at early boot stage (before device driver is initialized)
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Initial skeleton for pinctrl drivers. This patch includes common
infrastructure and API definitions for pinctrl drivers.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
