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73 lines
2.8 KiB
Diff
73 lines
2.8 KiB
Diff
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From: AngeloGioacchino Del Regno
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<angelogioacchino.delregno@somainline.org>
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To: linus.walleij@linaro.org
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Cc: linux-kernel@vger.kernel.org, konrad.dybcio@somainline.org,
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marijn.suijten@somainline.org, martin.botka@somainline.org,
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phone-devel@vger.kernel.org, linux-gpio@vger.kernel.org,
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devicetree@vger.kernel.org, robh+dt@kernel.org,
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AngeloGioacchino Del Regno
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<angelogioacchino.delregno@somainline.org>
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Subject: [PATCH v5 1/2] pinctrl: Add driver for Awinic AW9523/B I2C GPIO
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Expander
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Date: Mon, 25 Jan 2021 19:22:18 +0100
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The Awinic AW9523(B) is a multi-function I2C gpio expander in a
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TQFN-24L package, featuring PWM (max 37mA per pin, or total max
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power 3.2Watts) for LED driving capability.
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It has two ports with 8 pins per port (for a total of 16 pins),
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configurable as either PWM with 1/256 stepping or GPIO input/output,
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1.8V logic input; each GPIO can be configured as input or output
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independently from each other.
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This IC also has an internal interrupt controller, which is capable
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of generating an interrupt for each GPIO, depending on the
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configuration, and will raise an interrupt on the INTN pin to
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advertise this to an external interrupt controller.
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Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
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---
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drivers/pinctrl/Kconfig | 17 +
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drivers/pinctrl/Makefile | 1 +
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drivers/pinctrl/pinctrl-aw9523.c | 1122 ++++++++++++++++++++++++++++++
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3 files changed, 1140 insertions(+)
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create mode 100644 drivers/pinctrl/pinctrl-aw9523.c
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--- a/drivers/pinctrl/Kconfig
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+++ b/drivers/pinctrl/Kconfig
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@@ -110,6 +110,24 @@ config PINCTRL_AMD
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Requires ACPI/FDT device enumeration code to set up a platform
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device.
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+config PINCTRL_AW9523
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+ bool "Awinic AW9523/AW9523B I2C GPIO expander pinctrl driver"
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+ depends on OF && I2C
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+ select PINMUX
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+ select PINCONF
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+ select GENERIC_PINCONF
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+ select GPIOLIB
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+ select GPIOLIB_IRQCHIP
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+ select REGMAP
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+ select REGMAP_I2C
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+ help
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+ The Awinic AW9523/AW9523B is a multi-function I2C GPIO
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+ expander with PWM functionality. This driver bundles a
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+ pinctrl driver to select the function muxing and a GPIO
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+ driver to handle GPIO, when the GPIO function is selected.
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+
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+ Say yes to enable pinctrl and GPIO support for the AW9523(B).
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+
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config PINCTRL_BM1880
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bool "Bitmain BM1880 Pinctrl driver"
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depends on OF && (ARCH_BITMAIN || COMPILE_TEST)
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--- a/drivers/pinctrl/Makefile
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+++ b/drivers/pinctrl/Makefile
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@@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_AXP209) += pinctrl-
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obj-$(CONFIG_PINCTRL_AT91) += pinctrl-at91.o
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obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o
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obj-$(CONFIG_PINCTRL_AMD) += pinctrl-amd.o
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+obj-$(CONFIG_PINCTRL_AW9523) += pinctrl-aw9523.o
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obj-$(CONFIG_PINCTRL_BM1880) += pinctrl-bm1880.o
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obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o
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obj-$(CONFIG_PINCTRL_DA9062) += pinctrl-da9062.o
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