Commit b8a51e95 authored by Andre Przywara's avatar Andre Przywara Committed by Linus Walleij
Browse files

pinctrl: sunxi: Add support for the secondary A523 GPIO ports 



As most other Allwinner SoCs before, the A523 chip contains a second
GPIO controller, managing banks PL and PM.
Use the newly introduced DT based pinctrl driver to describe just the
generic pinctrl properties, so advertise the number of pins per bank
and the interrupt capabilities. The actual function/mux assignment is
taken from the devicetree.

Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
Reviewed-by: default avatarJernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/20250306235827.4895-9-andre.przywara@arm.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 648be4cd

drivers/pinctrl/sunxi/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -136,4 +136,9 @@ config PINCTRL_SUN55I_A523 
	default ARM64 && ARCH_SUNXI

	select PINCTRL_SUNXI



config PINCTRL_SUN55I_A523_R

	bool "Support for the Allwinner A523 R-PIO"

	default ARM64 && ARCH_SUNXI

	select PINCTRL_SUNXI



endif

drivers/pinctrl/sunxi/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -28,5 +28,6 @@ obj-$(CONFIG_PINCTRL_SUN50I_H6_R) += pinctrl-sun50i-h6-r.o 
obj-$(CONFIG_PINCTRL_SUN50I_H616)	+= pinctrl-sun50i-h616.o

obj-$(CONFIG_PINCTRL_SUN50I_H616_R)	+= pinctrl-sun50i-h616-r.o

obj-$(CONFIG_PINCTRL_SUN55I_A523)	+= pinctrl-sun55i-a523.o

obj-$(CONFIG_PINCTRL_SUN55I_A523_R)	+= pinctrl-sun55i-a523-r.o

obj-$(CONFIG_PINCTRL_SUN9I_A80)		+= pinctrl-sun9i-a80.o

obj-$(CONFIG_PINCTRL_SUN9I_A80_R)	+= pinctrl-sun9i-a80-r.o

drivers/pinctrl/sunxi/pinctrl-sun55i-a523-r.c

0 → 100644
+54 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/*

 * Allwinner A523 SoC r-pinctrl driver.

 *

 * Copyright (C) 2024 Arm Ltd.

 */



#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/pinctrl/pinctrl.h>



#include "pinctrl-sunxi.h"



static const u8 a523_r_nr_bank_pins[SUNXI_PINCTRL_MAX_BANKS] =

/*	  PL  PM */

	{ 14,  6 };



static const unsigned int a523_r_irq_bank_map[] = { 0, 1 };



static const u8 a523_r_irq_bank_muxes[SUNXI_PINCTRL_MAX_BANKS] =

/*	  PL  PM */

	{ 14, 14 };



static struct sunxi_pinctrl_desc a523_r_pinctrl_data = {

	.irq_banks = ARRAY_SIZE(a523_r_irq_bank_map),

	.irq_bank_map = a523_r_irq_bank_map,

	.irq_read_needs_mux = true,

	.io_bias_cfg_variant = BIAS_VOLTAGE_PIO_POW_MODE_SEL,

	.pin_base = PL_BASE,

};



static int a523_r_pinctrl_probe(struct platform_device *pdev)

{

	return sunxi_pinctrl_dt_table_init(pdev, a523_r_nr_bank_pins,

					   a523_r_irq_bank_muxes,

					   &a523_r_pinctrl_data,

					   SUNXI_PINCTRL_NEW_REG_LAYOUT);

}



static const struct of_device_id a523_r_pinctrl_match[] = {

	{ .compatible = "allwinner,sun55i-a523-r-pinctrl", },

	{}

};



static struct platform_driver a523_r_pinctrl_driver = {

	.probe	= a523_r_pinctrl_probe,

	.driver	= {

		.name		= "sun55i-a523-r-pinctrl",

		.of_match_table	= a523_r_pinctrl_match,

	},

};

builtin_platform_driver(a523_r_pinctrl_driver);