GPIO: add single-register GPIO via CREG driver
Add single-register MMIO GPIO driver for complex cases where
only several fields in register belong to GPIO lines and each GPIO
line owns a field with different length and on/off value.
Such CREG GPIOs are used in Synopsys AXS10x and HSDK boards.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 88c2567..2bb9ff2 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -437,6 +437,16 @@
Say yes here to support SIOX I/O devices. These are units connected
via a SIOX bus and have a number of fixed-direction I/O lines.
+config GPIO_SNPS_CREG
+ bool "Synopsys GPIO via CREG (Control REGisters) driver"
+ depends on ARC || COMPILE_TEST
+ select OF_GPIO
+ help
+ This driver supports GPIOs via CREG on various Synopsys SoCs.
+ This is a single-register MMIO GPIO driver for complex cases
+ where only several fields in register belong to GPIO lines and
+ each GPIO line owns a field with different length and on/off value.
+
config GPIO_SPEAR_SPICS
bool "ST SPEAr13xx SPI Chip Select as GPIO support"
depends on PLAT_SPEAR