Commit 648be4cd authored by Andre Przywara's avatar Andre Przywara Committed by Linus Walleij
Browse files

pinctrl: sunxi: Add support for the Allwinner A523 



The Allwinner A523 contains pins in 10 out of the 11 possible pin banks;
it just skips port A.
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/20250306235827.4895-8-andre.przywara@arm.com


Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent d626d248

drivers/pinctrl/sunxi/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -131,4 +131,9 @@ config PINCTRL_SUN50I_H616_R 
	default ARM64 && ARCH_SUNXI

	select PINCTRL_SUNXI



config PINCTRL_SUN55I_A523

	bool "Support for the Allwinner A523 PIO"

	default ARM64 && ARCH_SUNXI

	select PINCTRL_SUNXI



endif

drivers/pinctrl/sunxi/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -27,5 +27,6 @@ obj-$(CONFIG_PINCTRL_SUN50I_H6) += pinctrl-sun50i-h6.o 
obj-$(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_SUN9I_A80)		+= pinctrl-sun9i-a80.o

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

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

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

/*

 * Allwinner A523 SoC pinctrl driver.

 *

 * Copyright (C) 2023 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_nr_bank_pins[SUNXI_PINCTRL_MAX_BANKS] =

/*	  PA  PB  PC  PD  PE  PF  PG  PH  PI  PJ  PK */

	{  0, 15, 17, 24, 16,  7, 15, 20, 17, 28, 24 };



static const unsigned int a523_irq_bank_map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };



static const u8 a523_irq_bank_muxes[SUNXI_PINCTRL_MAX_BANKS] =

/*	  PA  PB  PC  PD  PE  PF  PG  PH  PI  PJ  PK */

	{  0, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14};



static struct sunxi_pinctrl_desc a523_pinctrl_data = {

	.irq_banks = ARRAY_SIZE(a523_irq_bank_map),

	.irq_bank_map = a523_irq_bank_map,

	.irq_read_needs_mux = true,

	.io_bias_cfg_variant = BIAS_VOLTAGE_PIO_POW_MODE_SEL,

};



static int a523_pinctrl_probe(struct platform_device *pdev)

{

	return sunxi_pinctrl_dt_table_init(pdev, a523_nr_bank_pins,

					   a523_irq_bank_muxes,

					   &a523_pinctrl_data,

					   SUNXI_PINCTRL_NEW_REG_LAYOUT |

					   SUNXI_PINCTRL_ELEVEN_BANKS);

}



static const struct of_device_id a523_pinctrl_match[] = {

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

	{}

};



static struct platform_driver a523_pinctrl_driver = {

	.probe	= a523_pinctrl_probe,

	.driver	= {

		.name		= "sun55i-a523-pinctrl",

		.of_match_table	= a523_pinctrl_match,

	},

};

builtin_platform_driver(a523_pinctrl_driver);