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pinctrl: Add Cypress cy8c95x0 support 

Add support for cypress I2C GPIO expanders cy8c9520, cy8c9540 and
cy8c9560. The GPIO expanders feature a PWM mode, thus add it as
pinctrl driver.

The chip features multiple drive modes for each pin when configured
as output and multiple bias settings when configured as input.

Tested all three components and verified that all functionality
is fully working.

Datasheet: https://www.cypress.com/file/37971/download
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Link: https://lore.kernel.org/r/20220816054917.7893-3-patrick.rudolph@9elements.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Patrick Rudolph 2022-08-16 07:49:15 +02:00 committed by Linus Walleij
parent 8d39e55e52
commit e6cbbe4294
4 changed files with 1402 additions and 0 deletions
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6
MAINTAINERS
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@ -5629,6 +5629,12 @@ Q: http://patchwork.linuxtv.org/project/linux-media/list/
T: git git://linuxtv.org/anttip/media_tree.git
F: drivers/media/common/cypress_firmware*
CYPRESS CY8C95X0 PINCTRL DRIVER
M: Patrick Rudolph <patrick.rudolph@9elements.com>
L: linux-gpio@vger.kernel.org
S: Maintained
F: drivers/pinctrl/pinctrl-cy8c95x0.c
CYPRESS CY8CTMA140 TOUCHSCREEN DRIVER
M: Linus Walleij <linus.walleij@linaro.org>
L: linux-input@vger.kernel.org

14
drivers/pinctrl/Kconfig
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@ -135,6 +135,20 @@ config PINCTRL_BM1880
help
Pinctrl driver for Bitmain BM1880 SoC.
config PINCTRL_CY8C95X0
tristate "Cypress CY8C95X0 I2C pinctrl and GPIO driver"
depends on I2C && OF
select GPIOLIB
select GPIOLIB_IRQCHIP
select PINMUX
select PINCONF
select GENERIC_PINCONF
select REGMAP_I2C
help
Support for 20/40/60 pin Cypress Cy8C95x0 pinctrl/gpio I2C expander.
This driver can also be built as a module. If so, the module will be
called pinctrl-cy8c95x0.
config PINCTRL_DA850_PUPD
tristate "TI DA850/OMAP-L138/AM18XX pull-up and pull-down groups"
depends on OF && (ARCH_DAVINCI_DA850 || COMPILE_TEST)

1
drivers/pinctrl/Makefile
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@ -17,6 +17,7 @@ obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o
obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o
obj-$(CONFIG_PINCTRL_AXP209) += pinctrl-axp209.o
obj-$(CONFIG_PINCTRL_BM1880) += pinctrl-bm1880.o
obj-$(CONFIG_PINCTRL_CY8C95X0) += pinctrl-cy8c95x0.o
obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o
obj-$(CONFIG_PINCTRL_DA9062) += pinctrl-da9062.o
obj-$(CONFIG_PINCTRL_DIGICOLOR) += pinctrl-digicolor.o

1381
drivers/pinctrl/pinctrl-cy8c95x0.c Normal file
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