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linux-next/drivers/pinctrl/pinctrl-oxnas.c
Neil Armstrong 4b0c0c25fa pinctrl: oxnas: Add support for OX820 
Add support for the Oxford Semiconductor OX820 which is similar as OX810 but
has 50 pins and two registers banks to setup alternate functions.
Add specific pins, groups and functions structures.
Add DT match data to select corresponding support.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-24 16:30:14 +02:00

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/*
* 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.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#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);
return !(readl_relaxed(bank->reg_base + OUTPUT_EN) & mask);
}
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;
u32 arg;
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]);
arg = pinconf_to_config_argument(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;
u32 arg;
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]);
arg = pinconf_to_config_argument(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_irq(irq_linear_revmap(gc->irqdomain, 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 resource *res;
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];
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
bank->reg_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(bank->reg_base))
return PTR_ERR(bank->reg_base);
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "irq get failed\n");
return irq;
}
bank->id = id;
bank->gpio_chip.parent = &pdev->dev;
bank->gpio_chip.of_node = np;
bank->gpio_chip.ngpio = ngpios;
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;
}
ret = gpiochip_irqchip_add(&bank->gpio_chip, &bank->irq_chip,
0, handle_level_irq, IRQ_TYPE_NONE);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to add IRQ chip %u: %d\n",
id, ret);
gpiochip_remove(&bank->gpio_chip);
return ret;
}
gpiochip_set_chained_irqchip(&bank->gpio_chip, &bank->irq_chip,
irq, oxnas_gpio_irq_handler);
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);
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