diff options
Diffstat (limited to 'target/linux/ramips/patches-5.4/805-pinctrl-AW9523.patch')
| -rw-r--r-- | target/linux/ramips/patches-5.4/805-pinctrl-AW9523.patch | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-5.4/805-pinctrl-AW9523.patch b/target/linux/ramips/patches-5.4/805-pinctrl-AW9523.patch new file mode 100644 index 0000000000..d8e17a671a --- /dev/null +++ b/target/linux/ramips/patches-5.4/805-pinctrl-AW9523.patch @@ -0,0 +1,72 @@ +From: AngeloGioacchino Del Regno + <angelogioacchino.delregno@somainline.org> +To: linus.walleij@linaro.org +Cc: linux-kernel@vger.kernel.org, konrad.dybcio@somainline.org, + marijn.suijten@somainline.org, martin.botka@somainline.org, + phone-devel@vger.kernel.org, linux-gpio@vger.kernel.org, + devicetree@vger.kernel.org, robh+dt@kernel.org, + AngeloGioacchino Del Regno + <angelogioacchino.delregno@somainline.org> +Subject: [PATCH v5 1/2] pinctrl: Add driver for Awinic AW9523/B I2C GPIO + Expander +Date: Mon, 25 Jan 2021 19:22:18 +0100 + +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> +--- + drivers/pinctrl/Kconfig | 17 + + drivers/pinctrl/Makefile | 1 + + drivers/pinctrl/pinctrl-aw9523.c | 1122 ++++++++++++++++++++++++++++++ + 3 files changed, 1140 insertions(+) + create mode 100644 drivers/pinctrl/pinctrl-aw9523.c + +--- a/drivers/pinctrl/Kconfig ++++ b/drivers/pinctrl/Kconfig +@@ -109,6 +109,24 @@ config PINCTRL_AMD + Requires ACPI/FDT device enumeration code to set up a platform + device. + ++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 ++ select REGMAP_I2C ++ 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) +--- a/drivers/pinctrl/Makefile ++++ b/drivers/pinctrl/Makefile +@@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_AXP209) += pinctrl- + obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o + obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o + obj-$(CONFIG_PINCTRL_AMD) += pinctrl-amd.o ++obj-$(CONFIG_PINCTRL_AW9523) += pinctrl-aw9523.o + obj-$(CONFIG_PINCTRL_BM1880) += pinctrl-bm1880.o + obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o + obj-$(CONFIG_PINCTRL_DIGICOLOR) += pinctrl-digicolor.o |