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linuxdebug/drivers/pinctrl/pinctrl-oxnas.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* Oxford Semiconductor OXNAS SoC Family pinctrl driver
*
* Copyright (C) 2016 Neil Armstrong <narmstrong@baylibre.com>
*
* Based on pinctrl-pic32.c
* Joshua Henderson, <joshua.henderson@microchip.com>
* Copyright (C) 2015 Microchip Technology Inc. All rights reserved.
*/
#include <linux/gpio/driver.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/pinctrl/pinconf.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
#include "pinctrl-utils.h"
#define PINS_PER_BANK 32
#define GPIO_BANK_START(bank) ((bank) * PINS_PER_BANK)
/* OX810 Regmap Offsets */
#define PINMUX_810_PRIMARY_SEL0 0x0c
#define PINMUX_810_SECONDARY_SEL0 0x14
#define PINMUX_810_TERTIARY_SEL0 0x8c
#define PINMUX_810_PRIMARY_SEL1 0x10
#define PINMUX_810_SECONDARY_SEL1 0x18
#define PINMUX_810_TERTIARY_SEL1 0x90
#define PINMUX_810_PULLUP_CTRL0 0xac
#define PINMUX_810_PULLUP_CTRL1 0xb0
/* OX820 Regmap Offsets */
#define PINMUX_820_BANK_OFFSET 0x100000
#define PINMUX_820_SECONDARY_SEL 0x14
#define PINMUX_820_TERTIARY_SEL 0x8c
#define PINMUX_820_QUATERNARY_SEL 0x94
#define PINMUX_820_DEBUG_SEL 0x9c
#define PINMUX_820_ALTERNATIVE_SEL 0xa4
#define PINMUX_820_PULLUP_CTRL 0xac
/* GPIO Registers */
#define INPUT_VALUE 0x00
#define OUTPUT_EN 0x04
#define IRQ_PENDING 0x0c
#define OUTPUT_SET 0x14
#define OUTPUT_CLEAR 0x18
#define OUTPUT_EN_SET 0x1c
#define OUTPUT_EN_CLEAR 0x20
#define RE_IRQ_ENABLE 0x28
#define FE_IRQ_ENABLE 0x2c
struct oxnas_function {
const char *name;
const char * const *groups;
unsigned int ngroups;
};
struct oxnas_pin_group {
const char *name;
unsigned int pin;
unsigned int bank;
struct oxnas_desc_function *functions;
};
struct oxnas_desc_function {
const char *name;
unsigned int fct;
};
struct oxnas_gpio_bank {
void __iomem *reg_base;
struct gpio_chip gpio_chip;
struct irq_chip irq_chip;
unsigned int id;
};
struct oxnas_pinctrl {
struct regmap *regmap;
struct device *dev;
struct pinctrl_dev *pctldev;
const struct oxnas_function *functions;
unsigned int nfunctions;
const struct oxnas_pin_group *groups;
unsigned int ngroups;
struct oxnas_gpio_bank *gpio_banks;
unsigned int nbanks;
};
struct oxnas_pinctrl_data {
struct pinctrl_desc *desc;
struct oxnas_pinctrl *pctl;
};
static const struct pinctrl_pin_desc oxnas_ox810se_pins[] = {
PINCTRL_PIN(0, "gpio0"),
PINCTRL_PIN(1, "gpio1"),
PINCTRL_PIN(2, "gpio2"),
PINCTRL_PIN(3, "gpio3"),
PINCTRL_PIN(4, "gpio4"),
PINCTRL_PIN(5, "gpio5"),
PINCTRL_PIN(6, "gpio6"),
PINCTRL_PIN(7, "gpio7"),
PINCTRL_PIN(8, "gpio8"),
PINCTRL_PIN(9, "gpio9"),
PINCTRL_PIN(10, "gpio10"),
PINCTRL_PIN(11, "gpio11"),
PINCTRL_PIN(12, "gpio12"),
PINCTRL_PIN(13, "gpio13"),
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"),
PINCTRL_PIN(24, "gpio24"),
PINCTRL_PIN(25, "gpio25"),
PINCTRL_PIN(26, "gpio26"),
PINCTRL_PIN(27, "gpio27"),
PINCTRL_PIN(28, "gpio28"),
PINCTRL_PIN(29, "gpio29"),
PINCTRL_PIN(30, "gpio30"),
PINCTRL_PIN(31, "gpio31"),
PINCTRL_PIN(32, "gpio32"),
PINCTRL_PIN(33, "gpio33"),
PINCTRL_PIN(34, "gpio34"),
};
static const struct pinctrl_pin_desc oxnas_ox820_pins[] = {
PINCTRL_PIN(0, "gpio0"),
PINCTRL_PIN(1, "gpio1"),
PINCTRL_PIN(2, "gpio2"),
PINCTRL_PIN(3, "gpio3"),
PINCTRL_PIN(4, "gpio4"),
PINCTRL_PIN(5, "gpio5"),
PINCTRL_PIN(6, "gpio6"),
PINCTRL_PIN(7, "gpio7"),
PINCTRL_PIN(8, "gpio8"),
PINCTRL_PIN(9, "gpio9"),
PINCTRL_PIN(10, "gpio10"),
PINCTRL_PIN(11, "gpio11"),
PINCTRL_PIN(12, "gpio12"),
PINCTRL_PIN(13, "gpio13"),
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"),
PINCTRL_PIN(24, "gpio24"),
PINCTRL_PIN(25, "gpio25"),
PINCTRL_PIN(26, "gpio26"),
PINCTRL_PIN(27, "gpio27"),
PINCTRL_PIN(28, "gpio28"),
PINCTRL_PIN(29, "gpio29"),
PINCTRL_PIN(30, "gpio30"),
PINCTRL_PIN(31, "gpio31"),
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"),
};
static const char * const oxnas_ox810se_fct0_group[] = {
"gpio0", "gpio1", "gpio2", "gpio3",
"gpio4", "gpio5", "gpio6", "gpio7",
"gpio8", "gpio9", "gpio10", "gpio11",
"gpio12", "gpio13", "gpio14", "gpio15",
"gpio16", "gpio17", "gpio18", "gpio19",
"gpio20", "gpio21", "gpio22", "gpio23",
"gpio24", "gpio25", "gpio26", "gpio27",
"gpio28", "gpio29", "gpio30", "gpio31",
"gpio32", "gpio33", "gpio34"
};
static const char * const oxnas_ox810se_fct3_group[] = {
"gpio0", "gpio1", "gpio2", "gpio3",
"gpio4", "gpio5", "gpio6", "gpio7",
"gpio8", "gpio9",
"gpio20",
"gpio22", "gpio23", "gpio24", "gpio25",
"gpio26", "gpio27", "gpio28", "gpio29",
"gpio30", "gpio31", "gpio32", "gpio33",
"gpio34"
};
static const char * const oxnas_ox820_fct0_group[] = {
"gpio0", "gpio1", "gpio2", "gpio3",
"gpio4", "gpio5", "gpio6", "gpio7",
"gpio8", "gpio9", "gpio10", "gpio11",
"gpio12", "gpio13", "gpio14", "gpio15",
"gpio16", "gpio17", "gpio18", "gpio19",
"gpio20", "gpio21", "gpio22", "gpio23",
"gpio24", "gpio25", "gpio26", "gpio27",
"gpio28", "gpio29", "gpio30", "gpio31",
"gpio32", "gpio33", "gpio34", "gpio35",
"gpio36", "gpio37", "gpio38", "gpio39",
"gpio40", "gpio41", "gpio42", "gpio43",
"gpio44", "gpio45", "gpio46", "gpio47",
"gpio48", "gpio49"
};
static const char * const oxnas_ox820_fct1_group[] = {
"gpio3", "gpio4",
"gpio12", "gpio13", "gpio14", "gpio15",
"gpio16", "gpio17", "gpio18", "gpio19",
"gpio20", "gpio21", "gpio22", "gpio23",
"gpio24"
};
static const char * const oxnas_ox820_fct4_group[] = {
"gpio5", "gpio6", "gpio7", "gpio8",
"gpio24", "gpio25", "gpio26", "gpio27",
"gpio40", "gpio41", "gpio42", "gpio43"
};
static const char * const oxnas_ox820_fct5_group[] = {
"gpio28", "gpio29", "gpio30", "gpio31"
};
#define FUNCTION(_name, _gr) \
{ \
.name = #_name, \
.groups = oxnas_##_gr##_group, \
.ngroups = ARRAY_SIZE(oxnas_##_gr##_group), \
}
static const struct oxnas_function oxnas_ox810se_functions[] = {
FUNCTION(gpio, ox810se_fct0),
FUNCTION(fct3, ox810se_fct3),
};
static const struct oxnas_function oxnas_ox820_functions[] = {
FUNCTION(gpio, ox820_fct0),
FUNCTION(fct1, ox820_fct1),
FUNCTION(fct4, ox820_fct4),
FUNCTION(fct5, ox820_fct5),
};
#define OXNAS_PINCTRL_GROUP(_pin, _name, ...) \
{ \
.name = #_name, \
.pin = _pin, \
.bank = _pin / PINS_PER_BANK, \
.functions = (struct oxnas_desc_function[]){ \
__VA_ARGS__, { } }, \
}
#define OXNAS_PINCTRL_FUNCTION(_name, _fct) \
{ \
.name = #_name, \
.fct = _fct, \
}
static const struct oxnas_pin_group oxnas_ox810se_groups[] = {
OXNAS_PINCTRL_GROUP(0, gpio0,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(1, gpio1,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(2, gpio2,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(3, gpio3,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(4, gpio4,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(5, gpio5,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(6, gpio6,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(7, gpio7,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(8, gpio8,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(9, gpio9,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(10, gpio10,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(11, gpio11,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(12, gpio12,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(13, gpio13,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(14, gpio14,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(15, gpio15,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(16, gpio16,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(17, gpio17,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(18, gpio18,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(19, gpio19,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(20, gpio20,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(21, gpio21,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(22, gpio22,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(23, gpio23,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(24, gpio24,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(25, gpio25,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(26, gpio26,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(27, gpio27,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(28, gpio28,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(29, gpio29,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(30, gpio30,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(31, gpio31,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(32, gpio32,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(33, gpio33,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
OXNAS_PINCTRL_GROUP(34, gpio34,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct3, 3)),
};
static const struct oxnas_pin_group oxnas_ox820_groups[] = {
OXNAS_PINCTRL_GROUP(0, gpio0,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(1, gpio1,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(2, gpio2,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(3, gpio3,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(4, gpio4,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(5, gpio5,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(6, gpio6,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(7, gpio7,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(8, gpio8,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(9, gpio9,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(10, gpio10,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(11, gpio11,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(12, gpio12,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(13, gpio13,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(14, gpio14,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(15, gpio15,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(16, gpio16,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(17, gpio17,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(18, gpio18,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(19, gpio19,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(20, gpio20,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(21, gpio21,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(22, gpio22,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(23, gpio23,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1)),
OXNAS_PINCTRL_GROUP(24, gpio24,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct1, 1),
OXNAS_PINCTRL_FUNCTION(fct4, 5)),
OXNAS_PINCTRL_GROUP(25, gpio25,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(26, gpio26,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(27, gpio27,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(28, gpio28,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct5, 5)),
OXNAS_PINCTRL_GROUP(29, gpio29,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct5, 5)),
OXNAS_PINCTRL_GROUP(30, gpio30,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct5, 5)),
OXNAS_PINCTRL_GROUP(31, gpio31,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct5, 5)),
OXNAS_PINCTRL_GROUP(32, gpio32,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(33, gpio33,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(34, gpio34,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(35, gpio35,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(36, gpio36,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(37, gpio37,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(38, gpio38,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(39, gpio39,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(40, gpio40,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(41, gpio41,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(42, gpio42,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(43, gpio43,
OXNAS_PINCTRL_FUNCTION(gpio, 0),
OXNAS_PINCTRL_FUNCTION(fct4, 4)),
OXNAS_PINCTRL_GROUP(44, gpio44,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(45, gpio45,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(46, gpio46,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(47, gpio47,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(48, gpio48,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
OXNAS_PINCTRL_GROUP(49, gpio49,
OXNAS_PINCTRL_FUNCTION(gpio, 0)),
};
static inline struct oxnas_gpio_bank *pctl_to_bank(struct oxnas_pinctrl *pctl,
unsigned int pin)
{
return &pctl->gpio_banks[pin / PINS_PER_BANK];
}
static int oxnas_pinctrl_get_groups_count(struct pinctrl_dev *pctldev)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
return pctl->ngroups;
}
static const char *oxnas_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
unsigned int group)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
return pctl->groups[group].name;
}
static int oxnas_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
unsigned int group,
const unsigned int **pins,
unsigned int *num_pins)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
*pins = &pctl->groups[group].pin;
*num_pins = 1;
return 0;
}
static const struct pinctrl_ops oxnas_pinctrl_ops = {
.get_groups_count = oxnas_pinctrl_get_groups_count,
.get_group_name = oxnas_pinctrl_get_group_name,
.get_group_pins = oxnas_pinctrl_get_group_pins,
.dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
.dt_free_map = pinctrl_utils_free_map,
};
static int oxnas_pinmux_get_functions_count(struct pinctrl_dev *pctldev)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
return pctl->nfunctions;
}
static const char *
oxnas_pinmux_get_function_name(struct pinctrl_dev *pctldev, unsigned int func)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
return pctl->functions[func].name;
}
static int oxnas_pinmux_get_function_groups(struct pinctrl_dev *pctldev,
unsigned int func,
const char * const **groups,
unsigned int * const num_groups)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
*groups = pctl->functions[func].groups;
*num_groups = pctl->functions[func].ngroups;
return 0;
}
static int oxnas_ox810se_pinmux_enable(struct pinctrl_dev *pctldev,
unsigned int func, unsigned int group)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
const struct oxnas_pin_group *pg = &pctl->groups[group];
const struct oxnas_function *pf = &pctl->functions[func];
const char *fname = pf->name;
struct oxnas_desc_function *functions = pg->functions;
u32 mask = BIT(pg->pin);
while (functions->name) {
if (!strcmp(functions->name, fname)) {
dev_dbg(pctl->dev,
"setting function %s bank %d pin %d fct %d mask %x\n",
fname, pg->bank, pg->pin,
functions->fct, mask);
regmap_write_bits(pctl->regmap,
(pg->bank ?
PINMUX_810_PRIMARY_SEL1 :
PINMUX_810_PRIMARY_SEL0),
mask,
(functions->fct == 1 ?
mask : 0));
regmap_write_bits(pctl->regmap,
(pg->bank ?
PINMUX_810_SECONDARY_SEL1 :
PINMUX_810_SECONDARY_SEL0),
mask,
(functions->fct == 2 ?
mask : 0));
regmap_write_bits(pctl->regmap,
(pg->bank ?
PINMUX_810_TERTIARY_SEL1 :
PINMUX_810_TERTIARY_SEL0),
mask,
(functions->fct == 3 ?
mask : 0));
return 0;
}
functions++;
}
dev_err(pctl->dev, "cannot mux pin %u to function %u\n", group, func);
return -EINVAL;
}
static int oxnas_ox820_pinmux_enable(struct pinctrl_dev *pctldev,
unsigned int func, unsigned int group)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
const struct oxnas_pin_group *pg = &pctl->groups[group];
const struct oxnas_function *pf = &pctl->functions[func];
const char *fname = pf->name;
struct oxnas_desc_function *functions = pg->functions;
unsigned int offset = (pg->bank ? PINMUX_820_BANK_OFFSET : 0);
u32 mask = BIT(pg->pin);
while (functions->name) {
if (!strcmp(functions->name, fname)) {
dev_dbg(pctl->dev,
"setting function %s bank %d pin %d fct %d mask %x\n",
fname, pg->bank, pg->pin,
functions->fct, mask);
regmap_write_bits(pctl->regmap,
offset + PINMUX_820_SECONDARY_SEL,
mask,
(functions->fct == 1 ?
mask : 0));
regmap_write_bits(pctl->regmap,
offset + PINMUX_820_TERTIARY_SEL,
mask,
(functions->fct == 2 ?
mask : 0));
regmap_write_bits(pctl->regmap,
offset + PINMUX_820_QUATERNARY_SEL,
mask,
(functions->fct == 3 ?
mask : 0));
regmap_write_bits(pctl->regmap,
offset + PINMUX_820_DEBUG_SEL,
mask,
(functions->fct == 4 ?
mask : 0));
regmap_write_bits(pctl->regmap,
offset + PINMUX_820_ALTERNATIVE_SEL,
mask,
(functions->fct == 5 ?
mask : 0));
return 0;
}
functions++;
}
dev_err(pctl->dev, "cannot mux pin %u to function %u\n", group, func);
return -EINVAL;
}
static int oxnas_ox810se_gpio_request_enable(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = gpiochip_get_data(range->gc);
u32 mask = BIT(offset - bank->gpio_chip.base);
dev_dbg(pctl->dev, "requesting gpio %d in bank %d (id %d) with mask 0x%x\n",
offset, bank->gpio_chip.base, bank->id, mask);
regmap_write_bits(pctl->regmap,
(bank->id ?
PINMUX_810_PRIMARY_SEL1 :
PINMUX_810_PRIMARY_SEL0),
mask, 0);
regmap_write_bits(pctl->regmap,
(bank->id ?
PINMUX_810_SECONDARY_SEL1 :
PINMUX_810_SECONDARY_SEL0),
mask, 0);
regmap_write_bits(pctl->regmap,
(bank->id ?
PINMUX_810_TERTIARY_SEL1 :
PINMUX_810_TERTIARY_SEL0),
mask, 0);
return 0;
}
static int oxnas_ox820_gpio_request_enable(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = gpiochip_get_data(range->gc);
unsigned int bank_offset = (bank->id ? PINMUX_820_BANK_OFFSET : 0);
u32 mask = BIT(offset - bank->gpio_chip.base);
dev_dbg(pctl->dev, "requesting gpio %d in bank %d (id %d) with mask 0x%x\n",
offset, bank->gpio_chip.base, bank->id, mask);
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_SECONDARY_SEL,
mask, 0);
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_TERTIARY_SEL,
mask, 0);
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_QUATERNARY_SEL,
mask, 0);
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_DEBUG_SEL,
mask, 0);
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_ALTERNATIVE_SEL,
mask, 0);
return 0;
}
static int oxnas_gpio_get_direction(struct gpio_chip *chip,
unsigned int offset)
{
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(offset);
if (readl_relaxed(bank->reg_base + OUTPUT_EN) & mask)
return GPIO_LINE_DIRECTION_OUT;
return GPIO_LINE_DIRECTION_IN;
}
static int oxnas_gpio_direction_input(struct gpio_chip *chip,
unsigned int offset)
{
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(offset);
writel_relaxed(mask, bank->reg_base + OUTPUT_EN_CLEAR);
return 0;
}
static int oxnas_gpio_get(struct gpio_chip *chip, unsigned int offset)
{
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(offset);
return (readl_relaxed(bank->reg_base + INPUT_VALUE) & mask) != 0;
}
static void oxnas_gpio_set(struct gpio_chip *chip, unsigned int offset,
int value)
{
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(offset);
if (value)
writel_relaxed(mask, bank->reg_base + OUTPUT_SET);
else
writel_relaxed(mask, bank->reg_base + OUTPUT_CLEAR);
}
static int oxnas_gpio_direction_output(struct gpio_chip *chip,
unsigned int offset, int value)
{
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(offset);
oxnas_gpio_set(chip, offset, value);
writel_relaxed(mask, bank->reg_base + OUTPUT_EN_SET);
return 0;
}
static int oxnas_gpio_set_direction(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned int offset, bool input)
{
struct gpio_chip *chip = range->gc;
if (input)
oxnas_gpio_direction_input(chip, offset);
else
oxnas_gpio_direction_output(chip, offset, 0);
return 0;
}
static const struct pinmux_ops oxnas_ox810se_pinmux_ops = {
.get_functions_count = oxnas_pinmux_get_functions_count,
.get_function_name = oxnas_pinmux_get_function_name,
.get_function_groups = oxnas_pinmux_get_function_groups,
.set_mux = oxnas_ox810se_pinmux_enable,
.gpio_request_enable = oxnas_ox810se_gpio_request_enable,
.gpio_set_direction = oxnas_gpio_set_direction,
};
static const struct pinmux_ops oxnas_ox820_pinmux_ops = {
.get_functions_count = oxnas_pinmux_get_functions_count,
.get_function_name = oxnas_pinmux_get_function_name,
.get_function_groups = oxnas_pinmux_get_function_groups,
.set_mux = oxnas_ox820_pinmux_enable,
.gpio_request_enable = oxnas_ox820_gpio_request_enable,
.gpio_set_direction = oxnas_gpio_set_direction,
};
static int oxnas_ox810se_pinconf_get(struct pinctrl_dev *pctldev,
unsigned int pin, unsigned long *config)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = pctl_to_bank(pctl, pin);
unsigned int param = pinconf_to_config_param(*config);
u32 mask = BIT(pin - bank->gpio_chip.base);
int ret;
u32 arg;
switch (param) {
case PIN_CONFIG_BIAS_PULL_UP:
ret = regmap_read(pctl->regmap,
(bank->id ?
PINMUX_810_PULLUP_CTRL1 :
PINMUX_810_PULLUP_CTRL0),
&arg);
if (ret)
return ret;
arg = !!(arg & mask);
break;
default:
return -ENOTSUPP;
}
*config = pinconf_to_config_packed(param, arg);
return 0;
}
static int oxnas_ox820_pinconf_get(struct pinctrl_dev *pctldev,
unsigned int pin, unsigned long *config)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = pctl_to_bank(pctl, pin);
unsigned int param = pinconf_to_config_param(*config);
unsigned int bank_offset = (bank->id ? PINMUX_820_BANK_OFFSET : 0);
u32 mask = BIT(pin - bank->gpio_chip.base);
int ret;
u32 arg;
switch (param) {
case PIN_CONFIG_BIAS_PULL_UP:
ret = regmap_read(pctl->regmap,
bank_offset + PINMUX_820_PULLUP_CTRL,
&arg);
if (ret)
return ret;
arg = !!(arg & mask);
break;
default:
return -ENOTSUPP;
}
*config = pinconf_to_config_packed(param, arg);
return 0;
}
static int oxnas_ox810se_pinconf_set(struct pinctrl_dev *pctldev,
unsigned int pin, unsigned long *configs,
unsigned int num_configs)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = pctl_to_bank(pctl, pin);
unsigned int param;
unsigned int i;
u32 offset = pin - bank->gpio_chip.base;
u32 mask = BIT(offset);
dev_dbg(pctl->dev, "setting pin %d bank %d mask 0x%x\n",
pin, bank->gpio_chip.base, mask);
for (i = 0; i < num_configs; i++) {
param = pinconf_to_config_param(configs[i]);
switch (param) {
case PIN_CONFIG_BIAS_PULL_UP:
dev_dbg(pctl->dev, " pullup\n");
regmap_write_bits(pctl->regmap,
(bank->id ?
PINMUX_810_PULLUP_CTRL1 :
PINMUX_810_PULLUP_CTRL0),
mask, mask);
break;
default:
dev_err(pctl->dev, "Property %u not supported\n",
param);
return -ENOTSUPP;
}
}
return 0;
}
static int oxnas_ox820_pinconf_set(struct pinctrl_dev *pctldev,
unsigned int pin, unsigned long *configs,
unsigned int num_configs)
{
struct oxnas_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);
struct oxnas_gpio_bank *bank = pctl_to_bank(pctl, pin);
unsigned int bank_offset = (bank->id ? PINMUX_820_BANK_OFFSET : 0);
unsigned int param;
unsigned int i;
u32 offset = pin - bank->gpio_chip.base;
u32 mask = BIT(offset);
dev_dbg(pctl->dev, "setting pin %d bank %d mask 0x%x\n",
pin, bank->gpio_chip.base, mask);
for (i = 0; i < num_configs; i++) {
param = pinconf_to_config_param(configs[i]);
switch (param) {
case PIN_CONFIG_BIAS_PULL_UP:
dev_dbg(pctl->dev, " pullup\n");
regmap_write_bits(pctl->regmap,
bank_offset + PINMUX_820_PULLUP_CTRL,
mask, mask);
break;
default:
dev_err(pctl->dev, "Property %u not supported\n",
param);
return -ENOTSUPP;
}
}
return 0;
}
static const struct pinconf_ops oxnas_ox810se_pinconf_ops = {
.pin_config_get = oxnas_ox810se_pinconf_get,
.pin_config_set = oxnas_ox810se_pinconf_set,
.is_generic = true,
};
static const struct pinconf_ops oxnas_ox820_pinconf_ops = {
.pin_config_get = oxnas_ox820_pinconf_get,
.pin_config_set = oxnas_ox820_pinconf_set,
.is_generic = true,
};
static void oxnas_gpio_irq_ack(struct irq_data *data)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
u32 mask = BIT(data->hwirq);
writel(mask, bank->reg_base + IRQ_PENDING);
}
static void oxnas_gpio_irq_mask(struct irq_data *data)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
unsigned int type = irqd_get_trigger_type(data);
u32 mask = BIT(data->hwirq);
if (type & IRQ_TYPE_EDGE_RISING)
writel(readl(bank->reg_base + RE_IRQ_ENABLE) & ~mask,
bank->reg_base + RE_IRQ_ENABLE);
if (type & IRQ_TYPE_EDGE_FALLING)
writel(readl(bank->reg_base + FE_IRQ_ENABLE) & ~mask,
bank->reg_base + FE_IRQ_ENABLE);
}
static void oxnas_gpio_irq_unmask(struct irq_data *data)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
struct oxnas_gpio_bank *bank = gpiochip_get_data(chip);
unsigned int type = irqd_get_trigger_type(data);
u32 mask = BIT(data->hwirq);
if (type & IRQ_TYPE_EDGE_RISING)
writel(readl(bank->reg_base + RE_IRQ_ENABLE) | mask,
bank->reg_base + RE_IRQ_ENABLE);
if (type & IRQ_TYPE_EDGE_FALLING)
writel(readl(bank->reg_base + FE_IRQ_ENABLE) | mask,
bank->reg_base + FE_IRQ_ENABLE);
}
static unsigned int oxnas_gpio_irq_startup(struct irq_data *data)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(data);
oxnas_gpio_direction_input(chip, data->hwirq);
oxnas_gpio_irq_unmask(data);
return 0;
}
static int oxnas_gpio_irq_set_type(struct irq_data *data, unsigned int type)
{
if ((type & (IRQ_TYPE_EDGE_RISING|IRQ_TYPE_EDGE_FALLING)) == 0)
return -EINVAL;
irq_set_handler_locked(data, handle_edge_irq);
return 0;
}
static void oxnas_gpio_irq_handler(struct irq_desc *desc)
{
struct gpio_chip *gc = irq_desc_get_handler_data(desc);
struct oxnas_gpio_bank *bank = gpiochip_get_data(gc);
struct irq_chip *chip = irq_desc_get_chip(desc);
unsigned long stat;
unsigned int pin;
chained_irq_enter(chip, desc);
stat = readl(bank->reg_base + IRQ_PENDING);
for_each_set_bit(pin, &stat, BITS_PER_LONG)
generic_handle_domain_irq(gc->irq.domain, pin);
chained_irq_exit(chip, desc);
}
#define GPIO_BANK(_bank) \
{ \
.gpio_chip = { \
.label = "GPIO" #_bank, \
.request = gpiochip_generic_request, \
.free = gpiochip_generic_free, \
.get_direction = oxnas_gpio_get_direction, \
.direction_input = oxnas_gpio_direction_input, \
.direction_output = oxnas_gpio_direction_output, \
.get = oxnas_gpio_get, \
.set = oxnas_gpio_set, \
.ngpio = PINS_PER_BANK, \
.base = GPIO_BANK_START(_bank), \
.owner = THIS_MODULE, \
.can_sleep = 0, \
}, \
.irq_chip = { \
.name = "GPIO" #_bank, \
.irq_startup = oxnas_gpio_irq_startup, \
.irq_ack = oxnas_gpio_irq_ack, \
.irq_mask = oxnas_gpio_irq_mask, \
.irq_unmask = oxnas_gpio_irq_unmask, \
.irq_set_type = oxnas_gpio_irq_set_type, \
}, \
}
static struct oxnas_gpio_bank oxnas_gpio_banks[] = {
GPIO_BANK(0),
GPIO_BANK(1),
};
static struct oxnas_pinctrl ox810se_pinctrl = {
.functions = oxnas_ox810se_functions,
.nfunctions = ARRAY_SIZE(oxnas_ox810se_functions),
.groups = oxnas_ox810se_groups,
.ngroups = ARRAY_SIZE(oxnas_ox810se_groups),
.gpio_banks = oxnas_gpio_banks,
.nbanks = ARRAY_SIZE(oxnas_gpio_banks),
};
static struct pinctrl_desc oxnas_ox810se_pinctrl_desc = {
.name = "oxnas-pinctrl",
.pins = oxnas_ox810se_pins,
.npins = ARRAY_SIZE(oxnas_ox810se_pins),
.pctlops = &oxnas_pinctrl_ops,
.pmxops = &oxnas_ox810se_pinmux_ops,
.confops = &oxnas_ox810se_pinconf_ops,
.owner = THIS_MODULE,
};
static struct oxnas_pinctrl ox820_pinctrl = {
.functions = oxnas_ox820_functions,
.nfunctions = ARRAY_SIZE(oxnas_ox820_functions),
.groups = oxnas_ox820_groups,
.ngroups = ARRAY_SIZE(oxnas_ox820_groups),
.gpio_banks = oxnas_gpio_banks,
.nbanks = ARRAY_SIZE(oxnas_gpio_banks),
};
static struct pinctrl_desc oxnas_ox820_pinctrl_desc = {
.name = "oxnas-pinctrl",
.pins = oxnas_ox820_pins,
.npins = ARRAY_SIZE(oxnas_ox820_pins),
.pctlops = &oxnas_pinctrl_ops,
.pmxops = &oxnas_ox820_pinmux_ops,
.confops = &oxnas_ox820_pinconf_ops,
.owner = THIS_MODULE,
};
static struct oxnas_pinctrl_data oxnas_ox810se_pinctrl_data = {
.desc = &oxnas_ox810se_pinctrl_desc,
.pctl = &ox810se_pinctrl,
};
static struct oxnas_pinctrl_data oxnas_ox820_pinctrl_data = {
.desc = &oxnas_ox820_pinctrl_desc,
.pctl = &ox820_pinctrl,
};
static const struct of_device_id oxnas_pinctrl_of_match[] = {
{ .compatible = "oxsemi,ox810se-pinctrl",
.data = &oxnas_ox810se_pinctrl_data
},
{ .compatible = "oxsemi,ox820-pinctrl",
.data = &oxnas_ox820_pinctrl_data,
},
{ },
};
static int oxnas_pinctrl_probe(struct platform_device *pdev)
{
const struct of_device_id *id;
const struct oxnas_pinctrl_data *data;
struct oxnas_pinctrl *pctl;
id = of_match_node(oxnas_pinctrl_of_match, pdev->dev.of_node);
if (!id)
return -ENODEV;
data = id->data;
if (!data || !data->pctl || !data->desc)
return -EINVAL;
pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
if (!pctl)
return -ENOMEM;
pctl->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, pctl);
pctl->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"oxsemi,sys-ctrl");
if (IS_ERR(pctl->regmap)) {
dev_err(&pdev->dev, "failed to get sys ctrl regmap\n");
return -ENODEV;
}
pctl->functions = data->pctl->functions;
pctl->nfunctions = data->pctl->nfunctions;
pctl->groups = data->pctl->groups;
pctl->ngroups = data->pctl->ngroups;
pctl->gpio_banks = data->pctl->gpio_banks;
pctl->nbanks = data->pctl->nbanks;
pctl->pctldev = pinctrl_register(data->desc, &pdev->dev, pctl);
if (IS_ERR(pctl->pctldev)) {
dev_err(&pdev->dev, "Failed to register pinctrl device\n");
return PTR_ERR(pctl->pctldev);
}
return 0;
}
static int oxnas_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct of_phandle_args pinspec;
struct oxnas_gpio_bank *bank;
unsigned int id, ngpios;
int irq, ret;
struct gpio_irq_chip *girq;
if (of_parse_phandle_with_fixed_args(np, "gpio-ranges",
3, 0, &pinspec)) {
dev_err(&pdev->dev, "gpio-ranges property not found\n");
return -EINVAL;
}
id = pinspec.args[1] / PINS_PER_BANK;
ngpios = pinspec.args[2];
if (id >= ARRAY_SIZE(oxnas_gpio_banks)) {
dev_err(&pdev->dev, "invalid gpio-ranges base arg\n");
return -EINVAL;
}
if (ngpios > PINS_PER_BANK) {
dev_err(&pdev->dev, "invalid gpio-ranges count arg\n");
return -EINVAL;
}
bank = &oxnas_gpio_banks[id];
bank->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(bank->reg_base))
return PTR_ERR(bank->reg_base);
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
bank->id = id;
bank->gpio_chip.parent = &pdev->dev;
bank->gpio_chip.ngpio = ngpios;
girq = &bank->gpio_chip.irq;
girq->chip = &bank->irq_chip;
girq->parent_handler = oxnas_gpio_irq_handler;
girq->num_parents = 1;
girq->parents = devm_kcalloc(&pdev->dev, 1, sizeof(*girq->parents),
GFP_KERNEL);
if (!girq->parents)
return -ENOMEM;
girq->parents[0] = irq;
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_level_irq;
ret = gpiochip_add_data(&bank->gpio_chip, bank);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to add GPIO chip %u: %d\n",
id, ret);
return ret;
}
return 0;
}
static struct platform_driver oxnas_pinctrl_driver = {
.driver = {
.name = "oxnas-pinctrl",
.of_match_table = oxnas_pinctrl_of_match,
.suppress_bind_attrs = true,
},
.probe = oxnas_pinctrl_probe,
};
static const struct of_device_id oxnas_gpio_of_match[] = {
{ .compatible = "oxsemi,ox810se-gpio", },
{ .compatible = "oxsemi,ox820-gpio", },
{ },
};
static struct platform_driver oxnas_gpio_driver = {
.driver = {
.name = "oxnas-gpio",
.of_match_table = oxnas_gpio_of_match,
.suppress_bind_attrs = true,
},
.probe = oxnas_gpio_probe,
};
static int __init oxnas_gpio_register(void)
{
return platform_driver_register(&oxnas_gpio_driver);
}
arch_initcall(oxnas_gpio_register);
static int __init oxnas_pinctrl_register(void)
{
return platform_driver_register(&oxnas_pinctrl_driver);
}
arch_initcall(oxnas_pinctrl_register);