Update gpio drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol
to expose the driver and enable it by default based on devicetree.
We remove 'depend on' Kconfig for symbols that would be implied by
the devicetree node existing.
Signed-off-by: Kumar Gala <galak@kernel.org>
Driver implementation for the Xilinx Processor System MIO / EMIO GPIO
controller as contained in the Zynq-7000 and ZynqMP (UltraScale) SoCs.
The driver is split up into source and header for a parent controller
device and source and header for 1..n child GPIO pin bank devices.
The parent device driver takes care of IRQ handling, the GPIO pin bank
driver provides pin / bank access according to the API defined by the
GPIO subsystem.
More than one device for this type of GPIO controller is required as
it provides access to a number of GPIO pins well in excess of the 32
pins addressable by the current GPIO API (whereever parameters or
return values come in the form of a bit mask):
- Zynq-7000: 54 MIO GPIO pins, 64 EMIO GPIO pins in 4 banks.
- ZynqMP: 78 MIO GPIO pins, 96 EMIO GPIO pins in 6 banks.
Signed-off-by: Immo Birnbaum <Immo.Birnbaum@weidmueller.com>
Kumar Gala