target/linux/ramips/patches-5.15/805-pinctrl-AW9523.patch

   1 From: AngeloGioacchino Del Regno
   2         <angelogioacchino.delregno@somainline.org>
   3 To: linus.walleij@linaro.org
   4 Cc: linux-kernel@vger.kernel.org, konrad.dybcio@somainline.org,
   5         marijn.suijten@somainline.org, martin.botka@somainline.org,
   6         phone-devel@vger.kernel.org, linux-gpio@vger.kernel.org,
   7         devicetree@vger.kernel.org, robh+dt@kernel.org,
   8         AngeloGioacchino Del Regno
   9         <angelogioacchino.delregno@somainline.org>
  10 Subject: [PATCH v5 1/2] pinctrl: Add driver for Awinic AW9523/B I2C GPIO
  11  Expander
  12 Date: Mon, 25 Jan 2021 19:22:18 +0100
  13
  14 The Awinic AW9523(B) is a multi-function I2C gpio expander in a
  15 TQFN-24L package, featuring PWM (max 37mA per pin, or total max
  16 power 3.2Watts) for LED driving capability.
  17
  18 It has two ports with 8 pins per port (for a total of 16 pins),
  19 configurable as either PWM with 1/256 stepping or GPIO input/output,
  20 1.8V logic input; each GPIO can be configured as input or output
  21 independently from each other.
  22
  23 This IC also has an internal interrupt controller, which is capable
  24 of generating an interrupt for each GPIO, depending on the
  25 configuration, and will raise an interrupt on the INTN pin to
  26 advertise this to an external interrupt controller.
  27
  28 Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
  29 ---
  30  drivers/pinctrl/Kconfig          |   17 +
  31  drivers/pinctrl/Makefile         |    1 +
  32  drivers/pinctrl/pinctrl-aw9523.c | 1122 ++++++++++++++++++++++++++++++
  33  3 files changed, 1140 insertions(+)
  34  create mode 100644 drivers/pinctrl/pinctrl-aw9523.c
  35
  36 --- a/drivers/pinctrl/Kconfig
  37 +++ b/drivers/pinctrl/Kconfig
  38 @@ -111,6 +111,24 @@ config PINCTRL_AMD
  39           Requires ACPI/FDT device enumeration code to set up a platform
  40           device.
  41
  42 +config PINCTRL_AW9523
  43 +       bool "Awinic AW9523/AW9523B I2C GPIO expander pinctrl driver"
  44 +       depends on OF && I2C
  45 +       select PINMUX
  46 +       select PINCONF
  47 +       select GENERIC_PINCONF
  48 +       select GPIOLIB
  49 +       select GPIOLIB_IRQCHIP
  50 +       select REGMAP
  51 +       select REGMAP_I2C
  52 +       help
  53 +         The Awinic AW9523/AW9523B is a multi-function I2C GPIO
  54 +         expander with PWM functionality. This driver bundles a
  55 +         pinctrl driver to select the function muxing and a GPIO
  56 +         driver to handle GPIO, when the GPIO function is selected.
  57 +
  58 +         Say yes to enable pinctrl and GPIO support for the AW9523(B).
  59 +
  60  config PINCTRL_BM1880
  61         bool "Bitmain BM1880 Pinctrl driver"
  62         depends on OF && (ARCH_BITMAIN || COMPILE_TEST)
  63 --- a/drivers/pinctrl/Makefile
  64 +++ b/drivers/pinctrl/Makefile
  65 @@ -14,6 +14,7 @@ obj-$(CONFIG_PINCTRL_AXP209)  += pinctrl-
  66  obj-$(CONFIG_PINCTRL_AT91)     += pinctrl-at91.o
  67  obj-$(CONFIG_PINCTRL_AT91PIO4) += pinctrl-at91-pio4.o
  68  obj-$(CONFIG_PINCTRL_AMD)      += pinctrl-amd.o
  69 +obj-$(CONFIG_PINCTRL_AW9523)   += pinctrl-aw9523.o
  70  obj-$(CONFIG_PINCTRL_BM1880)   += pinctrl-bm1880.o
  71  obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o
  72  obj-$(CONFIG_PINCTRL_DA9062)   += pinctrl-da9062.o