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pinctrl: Add driver for Awinic AW9523/B I2C GPIO Expander

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The Awinic AW9523(B) is a multi-function I2C gpio expander in a
TQFN-24L package, featuring PWM (max 37mA per pin, or total max
power 3.2Watts) for LED driving capability.

It has two ports with 8 pins per port (for a total of 16 pins),
configurable as either PWM with 1/256 stepping or GPIO input/output,
1.8V logic input; each GPIO can be configured as input or output
independently from each other.

This IC also has an internal interrupt controller, which is capable
of generating an interrupt for each GPIO, depending on the
configuration, and will raise an interrupt on the INTN pin to
advertise this to an external interrupt controller.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
This commit is contained in:
AngeloGioacchino Del Regno 2020-12-04 22:34:58 +01:00 • committed by Jami Kettunen
parent c1fcb53c21
commit 96e86abbb4
3 changed files with 1140 additions and 0 deletions
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17
drivers/pinctrl/Kconfig
View file

@ -127,6 +127,23 @@ config PINCTRL_AXP209
selected.
Say Y to enable pinctrl and GPIO support for the AXP209 PMIC.
config PINCTRL_AW9523
bool "Awinic AW9523/AW9523B I2C GPIO expander pinctrl driver"
depends on OF && I2C
select PINMUX
select PINCONF
select GENERIC_PINCONF
select GPIOLIB
select GPIOLIB_IRQCHIP
select REGMAP
help
The Awinic AW9523/AW9523B is a multi-function I2C GPIO
expander with PWM functionality. This driver bundles a
pinctrl driver to select the function muxing and a GPIO
driver to handle GPIO, when the GPIO function is selected.
Say yes to enable pinctrl and GPIO support for the AW9523(B).
config PINCTRL_BM1880
bool "Bitmain BM1880 Pinctrl driver"
depends on OF && (ARCH_BITMAIN || COMPILE_TEST)

1
drivers/pinctrl/Makefile
View file

@ -15,6 +15,7 @@ obj-$(CONFIG_PINCTRL_ARTPEC6) += pinctrl-artpec6.o
obj-$(CONFIG_PINCTRL_AS3722) += pinctrl-as3722.o
obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o
obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o
obj-$(CONFIG_PINCTRL_AW9523) += pinctrl-aw9523.o
obj-$(CONFIG_PINCTRL_AXP209) += pinctrl-axp209.o
obj-$(CONFIG_PINCTRL_BM1880) += pinctrl-bm1880.o
obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o

1122
drivers/pinctrl/pinctrl-aw9523.c Normal file
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