bmips: rewrite pin controllers

This is needed in order to upstream them.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 875 insertions, 0 deletions

diff --git a/target/linux/bmips/patches-5.10/409-pinctrl-add-a-pincontrol-driver-for-BCM63268.patch b/target/linux/bmips/patches-5.10/409-pinctrl-add-a-pincontrol-driver-for-BCM63268.patch
new file mode 100644
index 0000000000..8acc5dbfbb
--- /dev/null
+++ b/target/linux/bmips/patches-5.10/409-pinctrl-add-a-pincontrol-driver-for-BCM63268.patch
@@ -0,0 +1,875 @@
+From 8ec959299a6e4bbdc65d62180aa952ae04cdcf07 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
+Date: Fri, 24 Jun 2016 22:19:12 +0200
+Subject: [PATCH 10/12] pinctrl: add a pincontrol driver for BCM63268
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add a pincontrol driver for BCM63268. BCM63268 allows muxing GPIOs
+to different functions. Depending on the mux, these are either single
+pin configurations or whole pin groups.
+
+Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
+Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
+---
+ drivers/pinctrl/bcm/Kconfig            |  11 +
+ drivers/pinctrl/bcm/Makefile           |   1 +
+ drivers/pinctrl/bcm/pinctrl-bcm63268.c | 821 +++++++++++++++++++++++++
+ 3 files changed, 833 insertions(+)
+ create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm63268.c
+
+--- a/drivers/pinctrl/bcm/Kconfig
++++ b/drivers/pinctrl/bcm/Kconfig
+@@ -73,6 +73,17 @@ config PINCTRL_BCM6368
+ 	help
+ 	   Say Y here to enable the Broadcom BCM6368 GPIO driver.
+ 
++config PINCTRL_BCM63268
++	bool "Broadcom BCM63268 GPIO driver"
++	depends on OF_GPIO && (BMIPS_GENERIC || COMPILE_TEST)
++	select PINMUX
++	select PINCONF
++	select GENERIC_PINCONF
++	select MFD_SYSCON
++	default BMIPS_GENERIC
++	help
++	   Say Y here to enable the Broadcom BCM63268 GPIO driver.
++
+ config PINCTRL_IPROC_GPIO
+ 	bool "Broadcom iProc GPIO (with PINCONF) driver"
+ 	depends on OF_GPIO && (ARCH_BCM_IPROC || COMPILE_TEST)
+--- a/drivers/pinctrl/bcm/Makefile
++++ b/drivers/pinctrl/bcm/Makefile
+@@ -7,6 +7,7 @@ obj-$(CONFIG_PINCTRL_BCM6328)		+= pinctr
+ obj-$(CONFIG_PINCTRL_BCM6358)		+= pinctrl-bcm6358.o
+ obj-$(CONFIG_PINCTRL_BCM6362)		+= pinctrl-bcm6362.o
+ obj-$(CONFIG_PINCTRL_BCM6368)		+= pinctrl-bcm6368.o
++obj-$(CONFIG_PINCTRL_BCM63268)		+= pinctrl-bcm63268.o
+ obj-$(CONFIG_PINCTRL_IPROC_GPIO)	+= pinctrl-iproc-gpio.o
+ obj-$(CONFIG_PINCTRL_CYGNUS_MUX)	+= pinctrl-cygnus-mux.o
+ obj-$(CONFIG_PINCTRL_NS)		+= pinctrl-ns.o
+--- /dev/null
++++ b/drivers/pinctrl/bcm/pinctrl-bcm63268.c
+@@ -0,0 +1,821 @@
++// SPDX-License-Identifier: GPL-2.0+
++/*
++ * Driver for BCM63268 GPIO unit (pinctrl + GPIO)
++ *
++ * Copyright (C) 2021 Álvaro Fernández Rojas <noltari@gmail.com>
++ * Copyright (C) 2016 Jonas Gorski <jonas.gorski@gmail.com>
++ */
++
++#include <linux/bitops.h>
++#include <linux/gpio.h>
++#include <linux/kernel.h>
++#include <linux/mfd/syscon.h>
++#include <linux/of.h>
++#include <linux/of_gpio.h>
++#include <linux/of_irq.h>
++#include <linux/platform_device.h>
++#include <linux/regmap.h>
++
++#include <linux/pinctrl/machine.h>
++#include <linux/pinctrl/pinconf.h>
++#include <linux/pinctrl/pinconf-generic.h>
++#include <linux/pinctrl/pinmux.h>
++
++#include "../core.h"
++#include "../pinctrl-utils.h"
++
++#define MODULE_NAME			"bcm63268-pinctrl"
++#define BCM63268_NUM_GPIOS		52
++#define BCM63268_NUM_LEDS		24
++
++#define BANK_SIZE			sizeof(uint32_t)
++#define PINS_PER_BANK			(BANK_SIZE * BITS_PER_BYTE)
++
++#define BCM63268_DIROUT_REG		0x04
++#define BCM63268_DATA_REG		0x0c
++#define BCM63268_LED_REG		0x10
++#define BCM63268_MODE_REG		0x18
++#define BCM63268_CTRL_REG		0x1c
++#define BCM63268_BASEMODE_REG		0x38
++#define  BCM63268_BASEMODE_NAND		BIT(2) /* GPIOs 2-7, 24-31 */
++#define  BCM63268_BASEMODE_GPIO35	BIT(4) /* GPIO 35 */
++#define  BCM63268_BASEMODE_DECTPD	BIT(5) /* GPIOs 8/9 */
++#define  BCM63268_BASEMODE_VDSL_PHY_0	BIT(6) /* GPIOs 10/11 */
++#define  BCM63268_BASEMODE_VDSL_PHY_1	BIT(7) /* GPIOs 12/13 */
++#define  BCM63268_BASEMODE_VDSL_PHY_2	BIT(8) /* GPIOs 24/25 */
++#define  BCM63268_BASEMODE_VDSL_PHY_3	BIT(9) /* GPIOs 26/27 */
++
++enum bcm63268_pinctrl_reg {
++	BCM63268_LEDCTRL,
++	BCM63268_MODE,
++	BCM63268_CTRL,
++	BCM63268_BASEMODE,
++};
++
++struct bcm63268_pingroup {
++	const char *name;
++	const unsigned * const pins;
++	const unsigned num_pins;
++};
++
++struct bcm63268_function {
++	const char *name;
++	const char * const *groups;
++	const unsigned num_groups;
++
++	enum bcm63268_pinctrl_reg reg;
++	uint32_t mask;
++};
++
++struct bcm63268_pinctrl {
++	struct device *dev;
++	struct regmap *regs;
++
++	struct pinctrl_dev *pctl_dev;
++	struct gpio_chip gpio_chip;
++	struct pinctrl_desc pctl_desc;
++	struct pinctrl_gpio_range gpio_range;
++};
++
++#define BCM63268_PIN(a, b, basemode)			\
++	{						\
++		.number = a,				\
++		.name = b,				\
++		.drv_data = (void *)(basemode)		\
++	}
++
++static const struct pinctrl_pin_desc bcm63268_pins[] = {
++	PINCTRL_PIN(0, "gpio0"),
++	PINCTRL_PIN(1, "gpio1"),
++	BCM63268_PIN(2, "gpio2", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(3, "gpio3", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(4, "gpio4", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(5, "gpio5", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(6, "gpio6", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(7, "gpio7", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(8, "gpio8", BCM63268_BASEMODE_DECTPD),
++	BCM63268_PIN(9, "gpio9", BCM63268_BASEMODE_DECTPD),
++	BCM63268_PIN(10, "gpio10", BCM63268_BASEMODE_VDSL_PHY_0),
++	BCM63268_PIN(11, "gpio11", BCM63268_BASEMODE_VDSL_PHY_0),
++	BCM63268_PIN(12, "gpio12", BCM63268_BASEMODE_VDSL_PHY_1),
++	BCM63268_PIN(13, "gpio13", BCM63268_BASEMODE_VDSL_PHY_1),
++	PINCTRL_PIN(14, "gpio14"),
++	PINCTRL_PIN(15, "gpio15"),
++	PINCTRL_PIN(16, "gpio16"),
++	PINCTRL_PIN(17, "gpio17"),
++	PINCTRL_PIN(18, "gpio18"),
++	PINCTRL_PIN(19, "gpio19"),
++	PINCTRL_PIN(20, "gpio20"),
++	PINCTRL_PIN(21, "gpio21"),
++	PINCTRL_PIN(22, "gpio22"),
++	PINCTRL_PIN(23, "gpio23"),
++	BCM63268_PIN(24, "gpio24",
++		     BCM63268_BASEMODE_NAND | BCM63268_BASEMODE_VDSL_PHY_2),
++	BCM63268_PIN(25, "gpio25",
++		     BCM63268_BASEMODE_NAND | BCM63268_BASEMODE_VDSL_PHY_2),
++	BCM63268_PIN(26, "gpio26",
++		     BCM63268_BASEMODE_NAND | BCM63268_BASEMODE_VDSL_PHY_3),
++	BCM63268_PIN(27, "gpio27",
++		     BCM63268_BASEMODE_NAND | BCM63268_BASEMODE_VDSL_PHY_3),
++	BCM63268_PIN(28, "gpio28", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(29, "gpio29", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(30, "gpio30", BCM63268_BASEMODE_NAND),
++	BCM63268_PIN(31, "gpio31", BCM63268_BASEMODE_NAND),
++	PINCTRL_PIN(32, "gpio32"),
++	PINCTRL_PIN(33, "gpio33"),
++	PINCTRL_PIN(34, "gpio34"),
++	PINCTRL_PIN(35, "gpio35"),
++	PINCTRL_PIN(36, "gpio36"),
++	PINCTRL_PIN(37, "gpio37"),
++	PINCTRL_PIN(38, "gpio38"),
++	PINCTRL_PIN(39, "gpio39"),
++	PINCTRL_PIN(40, "gpio40"),
++	PINCTRL_PIN(41, "gpio41"),
++	PINCTRL_PIN(42, "gpio42"),
++	PINCTRL_PIN(43, "gpio43"),
++	PINCTRL_PIN(44, "gpio44"),
++	PINCTRL_PIN(45, "gpio45"),
++	PINCTRL_PIN(46, "gpio46"),
++	PINCTRL_PIN(47, "gpio47"),
++	PINCTRL_PIN(48, "gpio48"),
++	PINCTRL_PIN(49, "gpio49"),
++	PINCTRL_PIN(50, "gpio50"),
++	PINCTRL_PIN(51, "gpio51"),
++};
++
++static unsigned gpio0_pins[] = { 0 };
++static unsigned gpio1_pins[] = { 1 };
++static unsigned gpio2_pins[] = { 2 };
++static unsigned gpio3_pins[] = { 3 };
++static unsigned gpio4_pins[] = { 4 };
++static unsigned gpio5_pins[] = { 5 };
++static unsigned gpio6_pins[] = { 6 };
++static unsigned gpio7_pins[] = { 7 };
++static unsigned gpio8_pins[] = { 8 };
++static unsigned gpio9_pins[] = { 9 };
++static unsigned gpio10_pins[] = { 10 };
++static unsigned gpio11_pins[] = { 11 };
++static unsigned gpio12_pins[] = { 12 };
++static unsigned gpio13_pins[] = { 13 };
++static unsigned gpio14_pins[] = { 14 };
++static unsigned gpio15_pins[] = { 15 };
++static unsigned gpio16_pins[] = { 16 };
++static unsigned gpio17_pins[] = { 17 };
++static unsigned gpio18_pins[] = { 18 };
++static unsigned gpio19_pins[] = { 19 };
++static unsigned gpio20_pins[] = { 20 };
++static unsigned gpio21_pins[] = { 21 };
++static unsigned gpio22_pins[] = { 22 };
++static unsigned gpio23_pins[] = { 23 };
++static unsigned gpio24_pins[] = { 24 };
++static unsigned gpio25_pins[] = { 25 };
++static unsigned gpio26_pins[] = { 26 };
++static unsigned gpio27_pins[] = { 27 };
++static unsigned gpio28_pins[] = { 28 };
++static unsigned gpio29_pins[] = { 29 };
++static unsigned gpio30_pins[] = { 30 };
++static unsigned gpio31_pins[] = { 31 };
++static unsigned gpio32_pins[] = { 32 };
++static unsigned gpio33_pins[] = { 33 };
++static unsigned gpio34_pins[] = { 34 };
++static unsigned gpio35_pins[] = { 35 };
++static unsigned gpio36_pins[] = { 36 };
++static unsigned gpio37_pins[] = { 37 };
++static unsigned gpio38_pins[] = { 38 };
++static unsigned gpio39_pins[] = { 39 };
++static unsigned gpio40_pins[] = { 40 };
++static unsigned gpio41_pins[] = { 41 };
++static unsigned gpio42_pins[] = { 42 };
++static unsigned gpio43_pins[] = { 43 };
++static unsigned gpio44_pins[] = { 44 };
++static unsigned gpio45_pins[] = { 45 };
++static unsigned gpio46_pins[] = { 46 };
++static unsigned gpio47_pins[] = { 47 };
++static unsigned gpio48_pins[] = { 48 };
++static unsigned gpio49_pins[] = { 49 };
++static unsigned gpio50_pins[] = { 50 };
++static unsigned gpio51_pins[] = { 51 };
++
++static unsigned nand_grp_pins[] = {
++	2, 3, 4, 5, 6, 7, 24,
++	25, 26, 27, 28, 29, 30, 31,
++};
++
++static unsigned dectpd_grp_pins[] = { 8, 9 };
++static unsigned vdsl_phy0_grp_pins[] = { 10, 11 };
++static unsigned vdsl_phy1_grp_pins[] = { 12, 13 };
++static unsigned vdsl_phy2_grp_pins[] = { 24, 25 };
++static unsigned vdsl_phy3_grp_pins[] = { 26, 27 };
++
++#define BCM63268_GROUP(n)					\
++	{							\
++		.name = #n,					\
++		.pins = n##_pins,				\
++		.num_pins = ARRAY_SIZE(n##_pins),		\
++	}
++
++static struct bcm63268_pingroup bcm63268_groups[] = {
++	BCM63268_GROUP(gpio0),
++	BCM63268_GROUP(gpio1),
++	BCM63268_GROUP(gpio2),
++	BCM63268_GROUP(gpio3),
++	BCM63268_GROUP(gpio4),
++	BCM63268_GROUP(gpio5),
++	BCM63268_GROUP(gpio6),
++	BCM63268_GROUP(gpio7),
++	BCM63268_GROUP(gpio8),
++	BCM63268_GROUP(gpio9),
++	BCM63268_GROUP(gpio10),
++	BCM63268_GROUP(gpio11),
++	BCM63268_GROUP(gpio12),
++	BCM63268_GROUP(gpio13),
++	BCM63268_GROUP(gpio14),
++	BCM63268_GROUP(gpio15),
++	BCM63268_GROUP(gpio16),
++	BCM63268_GROUP(gpio17),
++	BCM63268_GROUP(gpio18),
++	BCM63268_GROUP(gpio19),
++	BCM63268_GROUP(gpio20),
++	BCM63268_GROUP(gpio21),
++	BCM63268_GROUP(gpio22),
++	BCM63268_GROUP(gpio23),
++	BCM63268_GROUP(gpio24),
++	BCM63268_GROUP(gpio25),
++	BCM63268_GROUP(gpio26),
++	BCM63268_GROUP(gpio27),
++	BCM63268_GROUP(gpio28),
++	BCM63268_GROUP(gpio29),
++	BCM63268_GROUP(gpio30),
++	BCM63268_GROUP(gpio31),
++	BCM63268_GROUP(gpio32),
++	BCM63268_GROUP(gpio33),
++	BCM63268_GROUP(gpio34),
++	BCM63268_GROUP(gpio35),
++	BCM63268_GROUP(gpio36),
++	BCM63268_GROUP(gpio37),
++	BCM63268_GROUP(gpio38),
++	BCM63268_GROUP(gpio39),
++	BCM63268_GROUP(gpio40),
++	BCM63268_GROUP(gpio41),
++	BCM63268_GROUP(gpio42),
++	BCM63268_GROUP(gpio43),
++	BCM63268_GROUP(gpio44),
++	BCM63268_GROUP(gpio45),
++	BCM63268_GROUP(gpio46),
++	BCM63268_GROUP(gpio47),
++	BCM63268_GROUP(gpio48),
++	BCM63268_GROUP(gpio49),
++	BCM63268_GROUP(gpio50),
++	BCM63268_GROUP(gpio51),
++
++	/* multi pin groups */
++	BCM63268_GROUP(nand_grp),
++	BCM63268_GROUP(dectpd_grp),
++	BCM63268_GROUP(vdsl_phy0_grp),
++	BCM63268_GROUP(vdsl_phy1_grp),
++	BCM63268_GROUP(vdsl_phy2_grp),
++	BCM63268_GROUP(vdsl_phy3_grp),
++};
++
++static const char * const led_groups[] = {
++	"gpio0",
++	"gpio1",
++	"gpio2",
++	"gpio3",
++	"gpio4",
++	"gpio5",
++	"gpio6",
++	"gpio7",
++	"gpio8",
++	"gpio9",
++	"gpio10",
++	"gpio11",
++	"gpio12",
++	"gpio13",
++	"gpio14",
++	"gpio15",
++	"gpio16",
++	"gpio17",
++	"gpio18",
++	"gpio19",
++	"gpio20",
++	"gpio21",
++	"gpio22",
++	"gpio23",
++};
++
++static const char * const serial_led_clk_groups[] = {
++	"gpio0",
++};
++
++static const char * const serial_led_data_groups[] = {
++	"gpio1",
++};
++
++static const char * const hsspi_cs4_groups[] = {
++	"gpio16",
++};
++
++static const char * const hsspi_cs5_groups[] = {
++	"gpio17",
++};
++
++static const char * const hsspi_cs6_groups[] = {
++	"gpio8",
++};
++
++static const char * const hsspi_cs7_groups[] = {
++	"gpio9",
++};
++
++static const char * const uart1_scts_groups[] = {
++	"gpio10",
++	"gpio24",
++};
++
++static const char * const uart1_srts_groups[] = {
++	"gpio11",
++	"gpio25",
++};
++
++static const char * const uart1_sdin_groups[] = {
++	"gpio12",
++	"gpio26",
++};
++
++static const char * const uart1_sdout_groups[] = {
++	"gpio13",
++	"gpio27",
++};
++
++static const char * const ntr_pulse_in_groups[] = {
++	"gpio14",
++	"gpio28",
++};
++
++static const char * const dsl_ntr_pulse_out_groups[] = {
++	"gpio15",
++	"gpio29",
++};
++
++static const char * const adsl_spi_miso_groups[] = {
++	"gpio18",
++};
++
++static const char * const adsl_spi_mosi_groups[] = {
++	"gpio19",
++};
++
++static const char * const vreg_clk_groups[] = {
++	"gpio22",
++};
++
++static const char * const pcie_clkreq_b_groups[] = {
++	"gpio23",
++};
++
++static const char * const switch_led_clk_groups[] = {
++	"gpio30",
++};
++
++static const char * const switch_led_data_groups[] = {
++	"gpio31",
++};
++
++static const char * const wifi_groups[] = {
++	"gpio32",
++	"gpio33",
++	"gpio34",
++	"gpio35",
++	"gpio36",
++	"gpio37",
++	"gpio38",
++	"gpio39",
++	"gpio40",
++	"gpio41",
++	"gpio42",
++	"gpio43",
++	"gpio44",
++	"gpio45",
++	"gpio46",
++	"gpio47",
++	"gpio48",
++	"gpio49",
++	"gpio50",
++	"gpio51",
++};
++
++static const char * const nand_groups[] = {
++	"nand_grp",
++};
++
++static const char * const dectpd_groups[] = {
++	"dectpd_grp",
++};
++
++static const char * const vdsl_phy_override_0_groups[] = {
++	"vdsl_phy_override_0_grp",
++};
++
++static const char * const vdsl_phy_override_1_groups[] = {
++	"vdsl_phy_override_1_grp",
++};
++
++static const char * const vdsl_phy_override_2_groups[] = {
++	"vdsl_phy_override_2_grp",
++};
++
++static const char * const vdsl_phy_override_3_groups[] = {
++	"vdsl_phy_override_3_grp",
++};
++
++#define BCM63268_LED_FUN(n)				\
++	{						\
++		.name = #n,				\
++		.groups = n##_groups,			\
++		.num_groups = ARRAY_SIZE(n##_groups),	\
++		.reg = BCM63268_LEDCTRL,		\
++	}
++
++#define BCM63268_MODE_FUN(n)				\
++	{						\
++		.name = #n,				\
++		.groups = n##_groups,			\
++		.num_groups = ARRAY_SIZE(n##_groups),	\
++		.reg = BCM63268_MODE,			\
++	}
++
++#define BCM63268_CTRL_FUN(n)				\
++	{						\
++		.name = #n,				\
++		.groups = n##_groups,			\
++		.num_groups = ARRAY_SIZE(n##_groups),	\
++		.reg = BCM63268_CTRL,			\
++	}
++
++#define BCM63268_BASEMODE_FUN(n, val)			\
++	{						\
++		.name = #n,				\
++		.groups = n##_groups,			\
++		.num_groups = ARRAY_SIZE(n##_groups),	\
++		.reg = BCM63268_BASEMODE,		\
++		.mask = val,				\
++	}
++
++static const struct bcm63268_function bcm63268_funcs[] = {
++	BCM63268_LED_FUN(led),
++	BCM63268_MODE_FUN(serial_led_clk),
++	BCM63268_MODE_FUN(serial_led_data),
++	BCM63268_MODE_FUN(hsspi_cs6),
++	BCM63268_MODE_FUN(hsspi_cs7),
++	BCM63268_MODE_FUN(uart1_scts),
++	BCM63268_MODE_FUN(uart1_srts),
++	BCM63268_MODE_FUN(uart1_sdin),
++	BCM63268_MODE_FUN(uart1_sdout),
++	BCM63268_MODE_FUN(ntr_pulse_in),
++	BCM63268_MODE_FUN(dsl_ntr_pulse_out),
++	BCM63268_MODE_FUN(hsspi_cs4),
++	BCM63268_MODE_FUN(hsspi_cs5),
++	BCM63268_MODE_FUN(adsl_spi_miso),
++	BCM63268_MODE_FUN(adsl_spi_mosi),
++	BCM63268_MODE_FUN(vreg_clk),
++	BCM63268_MODE_FUN(pcie_clkreq_b),
++	BCM63268_MODE_FUN(switch_led_clk),
++	BCM63268_MODE_FUN(switch_led_data),
++	BCM63268_CTRL_FUN(wifi),
++	BCM63268_BASEMODE_FUN(nand, BCM63268_BASEMODE_NAND),
++	BCM63268_BASEMODE_FUN(dectpd, BCM63268_BASEMODE_DECTPD),
++	BCM63268_BASEMODE_FUN(vdsl_phy_override_0,
++			      BCM63268_BASEMODE_VDSL_PHY_0),
++	BCM63268_BASEMODE_FUN(vdsl_phy_override_1,
++			      BCM63268_BASEMODE_VDSL_PHY_1),
++	BCM63268_BASEMODE_FUN(vdsl_phy_override_2,
++			      BCM63268_BASEMODE_VDSL_PHY_2),
++	BCM63268_BASEMODE_FUN(vdsl_phy_override_3,
++			      BCM63268_BASEMODE_VDSL_PHY_3),
++};
++
++static inline unsigned int bcm63268_bank_pin(unsigned int pin)
++{
++	return pin % PINS_PER_BANK;
++}
++
++static inline unsigned int bcm63268_reg_off(unsigned int reg, unsigned int pin)
++{
++	return reg - (pin / PINS_PER_BANK) * BANK_SIZE;
++}
++
++static int bcm63268_gpio_direction_input(struct gpio_chip *chip,
++					unsigned int pin)
++{
++	struct bcm63268_pinctrl *pc = gpiochip_get_data(chip);
++	unsigned int dirout = bcm63268_reg_off(BCM63268_DIROUT_REG, pin);
++	unsigned int bank_pin = bcm63268_bank_pin(pin);
++	int ret;
++
++	/*
++	 * Check with the pinctrl driver whether this pin is usable as
++	 * an input GPIO
++	 */
++	ret = pinctrl_gpio_direction_input(chip->base + pin);
++	if (ret)
++		return ret;
++
++	regmap_update_bits(pc->regs, dirout, BIT(bank_pin), 0);
++
++	return 0;
++}
++
++static int bcm63268_gpio_direction_output(struct gpio_chip *chip,
++					 unsigned int pin, int value)
++{
++	struct bcm63268_pinctrl *pc = gpiochip_get_data(chip);
++	unsigned int data = bcm63268_reg_off(BCM63268_DATA_REG, pin);
++	unsigned int dirout = bcm63268_reg_off(BCM63268_DIROUT_REG, pin);
++	unsigned int bank_pin = bcm63268_bank_pin(pin);
++	unsigned int val = value ? BIT(bank_pin) : 0;
++	int ret;
++
++	/*
++	 * Check with the pinctrl driver whether this pin is usable as
++	 * an output GPIO
++	 */
++	ret = pinctrl_gpio_direction_output(chip->base + pin);
++	if (ret)
++		return ret;
++
++	regmap_update_bits(pc->regs, dirout, BIT(bank_pin), BIT(bank_pin));
++	regmap_update_bits(pc->regs, data, BIT(bank_pin), val);
++
++	return 0;
++}
++
++static int bcm63268_gpio_get(struct gpio_chip *chip, unsigned int pin)
++{
++	struct bcm63268_pinctrl *pc = gpiochip_get_data(chip);
++	unsigned int data = bcm63268_reg_off(BCM63268_DATA_REG, pin);
++	unsigned int bank_pin = bcm63268_bank_pin(pin);
++	unsigned int val;
++
++	regmap_read(pc->regs, data, &val);
++
++	return !!(val & BIT(bank_pin));
++}
++
++static int bcm63268_gpio_get_direction(struct gpio_chip *chip, unsigned int pin)
++{
++	struct bcm63268_pinctrl *pc = gpiochip_get_data(chip);
++	unsigned int dirout = bcm63268_reg_off(BCM63268_DIROUT_REG, pin);
++	unsigned int bank_pin = bcm63268_bank_pin(pin);
++	unsigned int val;
++
++	regmap_read(pc->regs, dirout, &val);
++
++	if (val & BIT(bank_pin))
++		return GPIO_LINE_DIRECTION_OUT;
++
++	return GPIO_LINE_DIRECTION_IN;
++}
++
++static void bcm63268_gpio_set(struct gpio_chip *chip, unsigned int pin,
++			     int value)
++{
++	struct bcm63268_pinctrl *pc = gpiochip_get_data(chip);
++	unsigned int data = bcm63268_reg_off(BCM63268_DATA_REG, pin);
++	unsigned int bank_pin = bcm63268_bank_pin(pin);
++	unsigned int val = value ? BIT(bank_pin) : 0;
++
++	regmap_update_bits(pc->regs, data, BIT(bank_pin), val);
++}
++
++static int bcm63268_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
++{
++	char irq_name[7];
++
++	sprintf(irq_name, "gpio%d", gpio);
++
++	return of_irq_get_byname(chip->of_node, irq_name);
++}
++
++static int bcm63268_pinctrl_get_group_count(struct pinctrl_dev *pctldev)
++{
++	return ARRAY_SIZE(bcm63268_groups);
++}
++
++static const char *bcm63268_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
++						   unsigned group)
++{
++	return bcm63268_groups[group].name;
++}
++
++static int bcm63268_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
++					   unsigned group,
++					   const unsigned **pins,
++					   unsigned *num_pins)
++{
++	*pins = bcm63268_groups[group].pins;
++	*num_pins = bcm63268_groups[group].num_pins;
++
++	return 0;
++}
++
++static int bcm63268_pinctrl_get_func_count(struct pinctrl_dev *pctldev)
++{
++	return ARRAY_SIZE(bcm63268_funcs);
++}
++
++static const char *bcm63268_pinctrl_get_func_name(struct pinctrl_dev *pctldev,
++						  unsigned selector)
++{
++	return bcm63268_funcs[selector].name;
++}
++
++static int bcm63268_pinctrl_get_groups(struct pinctrl_dev *pctldev,
++				       unsigned selector,
++				       const char * const **groups,
++				       unsigned * const num_groups)
++{
++	*groups = bcm63268_funcs[selector].groups;
++	*num_groups = bcm63268_funcs[selector].num_groups;
++
++	return 0;
++}
++
++static void bcm63268_set_gpio(struct bcm63268_pinctrl *pc, unsigned pin)
++{
++	const struct pinctrl_pin_desc *desc = &bcm63268_pins[pin];
++	unsigned int basemode = (unsigned long) desc->drv_data;
++	unsigned int mask = BIT(bcm63268_bank_pin(pin));
++
++	if (basemode)
++		regmap_update_bits(pc->regs, BCM63268_BASEMODE_REG, basemode,
++				   0);
++
++	if (pin < PINS_PER_BANK) {
++		/* base mode: 0 => gpio, 1 => mux function */
++		regmap_update_bits(pc->regs, BCM63268_MODE_REG, mask, 0);
++
++		/* pins 0-23 might be muxed to led */
++		if (pin < BCM63268_NUM_LEDS)
++			regmap_update_bits(pc->regs, BCM63268_LED_REG, mask,
++					   0);
++	} else if (pin < BCM63268_NUM_GPIOS) {
++		/* ctrl reg: 0 => wifi function, 1 => gpio */
++		regmap_update_bits(pc->regs, BCM63268_CTRL_REG, mask, mask);
++	}
++}
++
++static int bcm63268_pinctrl_set_mux(struct pinctrl_dev *pctldev,
++				    unsigned selector, unsigned group)
++{
++	struct bcm63268_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
++	const struct bcm63268_pingroup *pg = &bcm63268_groups[group];
++	const struct bcm63268_function *f = &bcm63268_funcs[selector];
++	unsigned i;
++	unsigned int reg;
++	unsigned int val, mask;
++
++	for (i = 0; i < pg->num_pins; i++)
++		bcm63268_set_gpio(pc, pg->pins[i]);
++
++	switch (f->reg) {
++	case BCM63268_LEDCTRL:
++		reg = BCM63268_LED_REG;
++		mask = BIT(pg->pins[0]);
++		val = BIT(pg->pins[0]);
++		break;
++	case BCM63268_MODE:
++		reg = BCM63268_MODE_REG;
++		mask = BIT(pg->pins[0]);
++		val = BIT(pg->pins[0]);
++		break;
++	case BCM63268_CTRL:
++		reg = BCM63268_CTRL_REG;
++		mask = BIT(pg->pins[0]);
++		val = 0;
++		break;
++	case BCM63268_BASEMODE:
++		reg = BCM63268_BASEMODE_REG;
++		mask = f->mask;
++		val = f->mask;
++		break;
++	default:
++		WARN_ON(1);
++		return -EINVAL;
++	}
++
++	regmap_update_bits(pc->regs, reg, mask, val);
++
++	return 0;
++}
++
++static int bcm63268_gpio_request_enable(struct pinctrl_dev *pctldev,
++					struct pinctrl_gpio_range *range,
++					unsigned offset)
++{
++	struct bcm63268_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
++
++	/* disable all functions using this pin */
++	bcm63268_set_gpio(pc, offset);
++
++	return 0;
++}
++
++static struct pinctrl_ops bcm63268_pctl_ops = {
++	.get_groups_count = bcm63268_pinctrl_get_group_count,
++	.get_group_name = bcm63268_pinctrl_get_group_name,
++	.get_group_pins = bcm63268_pinctrl_get_group_pins,
++	.dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
++	.dt_free_map = pinctrl_utils_free_map,
++};
++
++static struct pinmux_ops bcm63268_pmx_ops = {
++	.get_functions_count = bcm63268_pinctrl_get_func_count,
++	.get_function_name = bcm63268_pinctrl_get_func_name,
++	.get_function_groups = bcm63268_pinctrl_get_groups,
++	.set_mux = bcm63268_pinctrl_set_mux,
++	.gpio_request_enable = bcm63268_gpio_request_enable,
++	.strict = true,
++};
++
++static int bcm63268_pinctrl_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct device_node *np = dev->of_node;
++	struct bcm63268_pinctrl *pc;
++	int err;
++
++	pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
++	if (!pc)
++		return -ENOMEM;
++
++	platform_set_drvdata(pdev, pc);
++	pc->dev = dev;
++
++	pc->regs = syscon_node_to_regmap(dev->parent->of_node);
++	if (IS_ERR(pc->regs))
++		return PTR_ERR(pc->regs);
++
++	pc->gpio_chip.label = MODULE_NAME;
++	pc->gpio_chip.owner = THIS_MODULE;
++	pc->gpio_chip.request = gpiochip_generic_request;
++	pc->gpio_chip.free = gpiochip_generic_free;
++	pc->gpio_chip.direction_input = bcm63268_gpio_direction_input;
++	pc->gpio_chip.direction_output = bcm63268_gpio_direction_output;
++	pc->gpio_chip.get_direction = bcm63268_gpio_get_direction;
++	pc->gpio_chip.get = bcm63268_gpio_get;
++	pc->gpio_chip.set = bcm63268_gpio_set;
++	pc->gpio_chip.set_config = gpiochip_generic_config;
++	pc->gpio_chip.base = -1;
++	pc->gpio_chip.ngpio = BCM63268_NUM_GPIOS;
++	pc->gpio_chip.can_sleep = false;
++	pc->gpio_chip.parent = dev;
++	pc->gpio_chip.of_node = np;
++
++	if (of_get_property(np, "interrupt-names", NULL))
++		pc->gpio_chip.to_irq = bcm63268_gpio_to_irq;
++
++	err = gpiochip_add_data(&pc->gpio_chip, pc);
++	if (err) {
++		dev_err(dev, "could not add GPIO chip\n");
++		return err;
++	}
++
++	pc->pctl_desc.name = MODULE_NAME,
++	pc->pctl_desc.pins = bcm63268_pins,
++	pc->pctl_desc.npins = ARRAY_SIZE(bcm63268_pins),
++	pc->pctl_desc.pctlops = &bcm63268_pctl_ops,
++	pc->pctl_desc.pmxops = &bcm63268_pmx_ops,
++	pc->pctl_desc.owner = THIS_MODULE,
++
++	pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc);
++	if (IS_ERR(pc->pctl_dev)) {
++		gpiochip_remove(&pc->gpio_chip);
++		return PTR_ERR(pc->pctl_dev);
++	}
++
++	pc->gpio_range.name = MODULE_NAME;
++	pc->gpio_range.npins = BCM63268_NUM_GPIOS;
++	pc->gpio_range.base = pc->gpio_chip.base;
++	pc->gpio_range.gc = &pc->gpio_chip;
++	pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range);
++
++	dev_info(dev, "registered\n");
++
++	return 0;
++}
++
++static const struct of_device_id bcm63268_pinctrl_match[] = {
++	{ .compatible = "brcm,bcm63268-pinctrl", },
++	{ },
++};
++
++static struct platform_driver bcm63268_pinctrl_driver = {
++	.probe = bcm63268_pinctrl_probe,
++	.driver = {
++		.name = MODULE_NAME,
++		.of_match_table = bcm63268_pinctrl_match,
++	},
++};
++
++builtin_platform_driver(bcm63268_pinctrl_driver);