923 строки
24 KiB
C
923 строки
24 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2016-2017 NVIDIA Corporation
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*
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* Author: Thierry Reding <treding@nvidia.com>
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*/
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#include <linux/gpio/driver.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <dt-bindings/gpio/tegra186-gpio.h>
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#include <dt-bindings/gpio/tegra194-gpio.h>
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/* security registers */
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#define TEGRA186_GPIO_CTL_SCR 0x0c
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#define TEGRA186_GPIO_CTL_SCR_SEC_WEN BIT(28)
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#define TEGRA186_GPIO_CTL_SCR_SEC_REN BIT(27)
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#define TEGRA186_GPIO_INT_ROUTE_MAPPING(p, x) (0x14 + (p) * 0x20 + (x) * 4)
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/* control registers */
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#define TEGRA186_GPIO_ENABLE_CONFIG 0x00
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#define TEGRA186_GPIO_ENABLE_CONFIG_ENABLE BIT(0)
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#define TEGRA186_GPIO_ENABLE_CONFIG_OUT BIT(1)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_NONE (0x0 << 2)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL (0x1 << 2)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE (0x2 << 2)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE (0x3 << 2)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK (0x3 << 2)
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#define TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL BIT(4)
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#define TEGRA186_GPIO_ENABLE_CONFIG_DEBOUNCE BIT(5)
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#define TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT BIT(6)
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#define TEGRA186_GPIO_DEBOUNCE_CONTROL 0x04
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#define TEGRA186_GPIO_DEBOUNCE_CONTROL_THRESHOLD(x) ((x) & 0xff)
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#define TEGRA186_GPIO_INPUT 0x08
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#define TEGRA186_GPIO_INPUT_HIGH BIT(0)
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#define TEGRA186_GPIO_OUTPUT_CONTROL 0x0c
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#define TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED BIT(0)
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#define TEGRA186_GPIO_OUTPUT_VALUE 0x10
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#define TEGRA186_GPIO_OUTPUT_VALUE_HIGH BIT(0)
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#define TEGRA186_GPIO_INTERRUPT_CLEAR 0x14
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#define TEGRA186_GPIO_INTERRUPT_STATUS(x) (0x100 + (x) * 4)
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struct tegra_gpio_port {
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const char *name;
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unsigned int bank;
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unsigned int port;
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unsigned int pins;
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};
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struct tegra186_pin_range {
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unsigned int offset;
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const char *group;
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};
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struct tegra_gpio_soc {
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const struct tegra_gpio_port *ports;
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unsigned int num_ports;
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const char *name;
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unsigned int instance;
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const struct tegra186_pin_range *pin_ranges;
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unsigned int num_pin_ranges;
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const char *pinmux;
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};
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struct tegra_gpio {
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struct gpio_chip gpio;
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struct irq_chip intc;
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unsigned int num_irq;
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unsigned int *irq;
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const struct tegra_gpio_soc *soc;
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void __iomem *secure;
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void __iomem *base;
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};
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static const struct tegra_gpio_port *
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tegra186_gpio_get_port(struct tegra_gpio *gpio, unsigned int *pin)
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{
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unsigned int start = 0, i;
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for (i = 0; i < gpio->soc->num_ports; i++) {
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const struct tegra_gpio_port *port = &gpio->soc->ports[i];
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if (*pin >= start && *pin < start + port->pins) {
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*pin -= start;
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return port;
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}
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start += port->pins;
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}
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return NULL;
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}
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static void __iomem *tegra186_gpio_get_base(struct tegra_gpio *gpio,
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unsigned int pin)
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{
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const struct tegra_gpio_port *port;
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unsigned int offset;
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port = tegra186_gpio_get_port(gpio, &pin);
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if (!port)
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return NULL;
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offset = port->bank * 0x1000 + port->port * 0x200;
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return gpio->base + offset + pin * 0x20;
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}
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static int tegra186_gpio_get_direction(struct gpio_chip *chip,
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unsigned int offset)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, offset);
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if (WARN_ON(base == NULL))
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return -ENODEV;
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
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return GPIO_LINE_DIRECTION_OUT;
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return GPIO_LINE_DIRECTION_IN;
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}
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static int tegra186_gpio_direction_input(struct gpio_chip *chip,
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unsigned int offset)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, offset);
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if (WARN_ON(base == NULL))
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return -ENODEV;
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value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
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value |= TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
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writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
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value &= ~TEGRA186_GPIO_ENABLE_CONFIG_OUT;
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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return 0;
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}
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static int tegra186_gpio_direction_output(struct gpio_chip *chip,
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unsigned int offset, int level)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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void __iomem *base;
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u32 value;
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/* configure output level first */
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chip->set(chip, offset, level);
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base = tegra186_gpio_get_base(gpio, offset);
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if (WARN_ON(base == NULL))
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return -EINVAL;
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/* set the direction */
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value = readl(base + TEGRA186_GPIO_OUTPUT_CONTROL);
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value &= ~TEGRA186_GPIO_OUTPUT_CONTROL_FLOATED;
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writel(value, base + TEGRA186_GPIO_OUTPUT_CONTROL);
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value |= TEGRA186_GPIO_ENABLE_CONFIG_ENABLE;
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value |= TEGRA186_GPIO_ENABLE_CONFIG_OUT;
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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return 0;
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}
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static int tegra186_gpio_get(struct gpio_chip *chip, unsigned int offset)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, offset);
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if (WARN_ON(base == NULL))
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return -ENODEV;
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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if (value & TEGRA186_GPIO_ENABLE_CONFIG_OUT)
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value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
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else
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value = readl(base + TEGRA186_GPIO_INPUT);
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return value & BIT(0);
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}
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static void tegra186_gpio_set(struct gpio_chip *chip, unsigned int offset,
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int level)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, offset);
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if (WARN_ON(base == NULL))
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return;
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value = readl(base + TEGRA186_GPIO_OUTPUT_VALUE);
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if (level == 0)
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value &= ~TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
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else
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value |= TEGRA186_GPIO_OUTPUT_VALUE_HIGH;
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writel(value, base + TEGRA186_GPIO_OUTPUT_VALUE);
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}
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static int tegra186_gpio_set_config(struct gpio_chip *chip,
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unsigned int offset,
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unsigned long config)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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u32 debounce, value;
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void __iomem *base;
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base = tegra186_gpio_get_base(gpio, offset);
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if (base == NULL)
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return -ENXIO;
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if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
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return -ENOTSUPP;
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debounce = pinconf_to_config_argument(config);
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/*
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* The Tegra186 GPIO controller supports a maximum of 255 ms debounce
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* time.
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*/
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if (debounce > 255000)
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return -EINVAL;
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debounce = DIV_ROUND_UP(debounce, USEC_PER_MSEC);
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value = TEGRA186_GPIO_DEBOUNCE_CONTROL_THRESHOLD(debounce);
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writel(value, base + TEGRA186_GPIO_DEBOUNCE_CONTROL);
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value |= TEGRA186_GPIO_ENABLE_CONFIG_DEBOUNCE;
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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return 0;
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}
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static int tegra186_gpio_add_pin_ranges(struct gpio_chip *chip)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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struct pinctrl_dev *pctldev;
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struct device_node *np;
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unsigned int i, j;
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int err;
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if (!gpio->soc->pinmux || gpio->soc->num_pin_ranges == 0)
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return 0;
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np = of_find_compatible_node(NULL, NULL, gpio->soc->pinmux);
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if (!np)
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return -ENODEV;
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pctldev = of_pinctrl_get(np);
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of_node_put(np);
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if (!pctldev)
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return -EPROBE_DEFER;
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for (i = 0; i < gpio->soc->num_pin_ranges; i++) {
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unsigned int pin = gpio->soc->pin_ranges[i].offset, port;
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const char *group = gpio->soc->pin_ranges[i].group;
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port = pin / 8;
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pin = pin % 8;
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if (port >= gpio->soc->num_ports) {
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dev_warn(chip->parent, "invalid port %u for %s\n",
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port, group);
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continue;
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}
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for (j = 0; j < port; j++)
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pin += gpio->soc->ports[j].pins;
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err = gpiochip_add_pingroup_range(chip, pctldev, pin, group);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static int tegra186_gpio_of_xlate(struct gpio_chip *chip,
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const struct of_phandle_args *spec,
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u32 *flags)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(chip);
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unsigned int port, pin, i, offset = 0;
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if (WARN_ON(chip->of_gpio_n_cells < 2))
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return -EINVAL;
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if (WARN_ON(spec->args_count < chip->of_gpio_n_cells))
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return -EINVAL;
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port = spec->args[0] / 8;
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pin = spec->args[0] % 8;
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if (port >= gpio->soc->num_ports) {
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dev_err(chip->parent, "invalid port number: %u\n", port);
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return -EINVAL;
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}
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for (i = 0; i < port; i++)
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offset += gpio->soc->ports[i].pins;
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if (flags)
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*flags = spec->args[1];
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return offset + pin;
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}
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static void tegra186_irq_ack(struct irq_data *data)
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{
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struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
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void __iomem *base;
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base = tegra186_gpio_get_base(gpio, data->hwirq);
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if (WARN_ON(base == NULL))
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return;
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writel(1, base + TEGRA186_GPIO_INTERRUPT_CLEAR);
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}
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static void tegra186_irq_mask(struct irq_data *data)
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{
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struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, data->hwirq);
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if (WARN_ON(base == NULL))
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return;
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value &= ~TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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}
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static void tegra186_irq_unmask(struct irq_data *data)
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{
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struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, data->hwirq);
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if (WARN_ON(base == NULL))
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return;
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value |= TEGRA186_GPIO_ENABLE_CONFIG_INTERRUPT;
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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}
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static int tegra186_irq_set_type(struct irq_data *data, unsigned int type)
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{
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struct tegra_gpio *gpio = irq_data_get_irq_chip_data(data);
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void __iomem *base;
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u32 value;
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base = tegra186_gpio_get_base(gpio, data->hwirq);
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if (WARN_ON(base == NULL))
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return -ENODEV;
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value = readl(base + TEGRA186_GPIO_ENABLE_CONFIG);
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value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_MASK;
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value &= ~TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
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switch (type & IRQ_TYPE_SENSE_MASK) {
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case IRQ_TYPE_NONE:
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break;
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case IRQ_TYPE_EDGE_RISING:
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
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break;
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case IRQ_TYPE_EDGE_FALLING:
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_SINGLE_EDGE;
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break;
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case IRQ_TYPE_EDGE_BOTH:
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_DOUBLE_EDGE;
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break;
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case IRQ_TYPE_LEVEL_HIGH:
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_LEVEL;
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break;
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case IRQ_TYPE_LEVEL_LOW:
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value |= TEGRA186_GPIO_ENABLE_CONFIG_TRIGGER_TYPE_LEVEL;
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break;
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default:
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return -EINVAL;
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}
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writel(value, base + TEGRA186_GPIO_ENABLE_CONFIG);
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if ((type & IRQ_TYPE_EDGE_BOTH) == 0)
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irq_set_handler_locked(data, handle_level_irq);
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else
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irq_set_handler_locked(data, handle_edge_irq);
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if (data->parent_data)
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return irq_chip_set_type_parent(data, type);
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return 0;
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}
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static int tegra186_irq_set_wake(struct irq_data *data, unsigned int on)
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{
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if (data->parent_data)
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return irq_chip_set_wake_parent(data, on);
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return 0;
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}
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static void tegra186_gpio_irq(struct irq_desc *desc)
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{
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struct tegra_gpio *gpio = irq_desc_get_handler_data(desc);
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struct irq_domain *domain = gpio->gpio.irq.domain;
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struct irq_chip *chip = irq_desc_get_chip(desc);
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unsigned int parent = irq_desc_get_irq(desc);
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unsigned int i, offset = 0;
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chained_irq_enter(chip, desc);
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for (i = 0; i < gpio->soc->num_ports; i++) {
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const struct tegra_gpio_port *port = &gpio->soc->ports[i];
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unsigned int pin, irq;
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unsigned long value;
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void __iomem *base;
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base = gpio->base + port->bank * 0x1000 + port->port * 0x200;
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/* skip ports that are not associated with this bank */
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if (parent != gpio->irq[port->bank])
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goto skip;
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value = readl(base + TEGRA186_GPIO_INTERRUPT_STATUS(1));
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for_each_set_bit(pin, &value, port->pins) {
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irq = irq_find_mapping(domain, offset + pin);
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if (WARN_ON(irq == 0))
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continue;
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generic_handle_irq(irq);
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}
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skip:
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offset += port->pins;
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}
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chained_irq_exit(chip, desc);
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}
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static int tegra186_gpio_irq_domain_translate(struct irq_domain *domain,
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struct irq_fwspec *fwspec,
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unsigned long *hwirq,
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unsigned int *type)
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{
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struct tegra_gpio *gpio = gpiochip_get_data(domain->host_data);
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unsigned int port, pin, i, offset = 0;
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if (WARN_ON(gpio->gpio.of_gpio_n_cells < 2))
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return -EINVAL;
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if (WARN_ON(fwspec->param_count < gpio->gpio.of_gpio_n_cells))
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return -EINVAL;
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port = fwspec->param[0] / 8;
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pin = fwspec->param[0] % 8;
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if (port >= gpio->soc->num_ports)
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return -EINVAL;
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for (i = 0; i < port; i++)
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offset += gpio->soc->ports[i].pins;
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*type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
|
|
*hwirq = offset + pin;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *tegra186_gpio_populate_parent_fwspec(struct gpio_chip *chip,
|
|
unsigned int parent_hwirq,
|
|
unsigned int parent_type)
|
|
{
|
|
struct tegra_gpio *gpio = gpiochip_get_data(chip);
|
|
struct irq_fwspec *fwspec;
|
|
|
|
fwspec = kmalloc(sizeof(*fwspec), GFP_KERNEL);
|
|
if (!fwspec)
|
|
return NULL;
|
|
|
|
fwspec->fwnode = chip->irq.parent_domain->fwnode;
|
|
fwspec->param_count = 3;
|
|
fwspec->param[0] = gpio->soc->instance;
|
|
fwspec->param[1] = parent_hwirq;
|
|
fwspec->param[2] = parent_type;
|
|
|
|
return fwspec;
|
|
}
|
|
|
|
static int tegra186_gpio_child_to_parent_hwirq(struct gpio_chip *chip,
|
|
unsigned int hwirq,
|
|
unsigned int type,
|
|
unsigned int *parent_hwirq,
|
|
unsigned int *parent_type)
|
|
{
|
|
*parent_hwirq = chip->irq.child_offset_to_irq(chip, hwirq);
|
|
*parent_type = type;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static unsigned int tegra186_gpio_child_offset_to_irq(struct gpio_chip *chip,
|
|
unsigned int offset)
|
|
{
|
|
struct tegra_gpio *gpio = gpiochip_get_data(chip);
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < gpio->soc->num_ports; i++) {
|
|
if (offset < gpio->soc->ports[i].pins)
|
|
break;
|
|
|
|
offset -= gpio->soc->ports[i].pins;
|
|
}
|
|
|
|
return offset + i * 8;
|
|
}
|
|
|
|
static const struct of_device_id tegra186_pmc_of_match[] = {
|
|
{ .compatible = "nvidia,tegra186-pmc" },
|
|
{ .compatible = "nvidia,tegra194-pmc" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static void tegra186_gpio_init_route_mapping(struct tegra_gpio *gpio)
|
|
{
|
|
unsigned int i, j;
|
|
u32 value;
|
|
|
|
for (i = 0; i < gpio->soc->num_ports; i++) {
|
|
const struct tegra_gpio_port *port = &gpio->soc->ports[i];
|
|
unsigned int offset, p = port->port;
|
|
void __iomem *base;
|
|
|
|
base = gpio->secure + port->bank * 0x1000 + 0x800;
|
|
|
|
value = readl(base + TEGRA186_GPIO_CTL_SCR);
|
|
|
|
/*
|
|
* For controllers that haven't been locked down yet, make
|
|
* sure to program the default interrupt route mapping.
|
|
*/
|
|
if ((value & TEGRA186_GPIO_CTL_SCR_SEC_REN) == 0 &&
|
|
(value & TEGRA186_GPIO_CTL_SCR_SEC_WEN) == 0) {
|
|
for (j = 0; j < 8; j++) {
|
|
offset = TEGRA186_GPIO_INT_ROUTE_MAPPING(p, j);
|
|
|
|
value = readl(base + offset);
|
|
value = BIT(port->pins) - 1;
|
|
writel(value, base + offset);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int tegra186_gpio_probe(struct platform_device *pdev)
|
|
{
|
|
unsigned int i, j, offset;
|
|
struct gpio_irq_chip *irq;
|
|
struct tegra_gpio *gpio;
|
|
struct device_node *np;
|
|
char **names;
|
|
int err;
|
|
|
|
gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
|
|
if (!gpio)
|
|
return -ENOMEM;
|
|
|
|
gpio->soc = of_device_get_match_data(&pdev->dev);
|
|
|
|
gpio->secure = devm_platform_ioremap_resource_byname(pdev, "security");
|
|
if (IS_ERR(gpio->secure))
|
|
return PTR_ERR(gpio->secure);
|
|
|
|
gpio->base = devm_platform_ioremap_resource_byname(pdev, "gpio");
|
|
if (IS_ERR(gpio->base))
|
|
return PTR_ERR(gpio->base);
|
|
|
|
err = platform_irq_count(pdev);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
gpio->num_irq = err;
|
|
|
|
gpio->irq = devm_kcalloc(&pdev->dev, gpio->num_irq, sizeof(*gpio->irq),
|
|
GFP_KERNEL);
|
|
if (!gpio->irq)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < gpio->num_irq; i++) {
|
|
err = platform_get_irq(pdev, i);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
gpio->irq[i] = err;
|
|
}
|
|
|
|
gpio->gpio.label = gpio->soc->name;
|
|
gpio->gpio.parent = &pdev->dev;
|
|
|
|
gpio->gpio.request = gpiochip_generic_request;
|
|
gpio->gpio.free = gpiochip_generic_free;
|
|
gpio->gpio.get_direction = tegra186_gpio_get_direction;
|
|
gpio->gpio.direction_input = tegra186_gpio_direction_input;
|
|
gpio->gpio.direction_output = tegra186_gpio_direction_output;
|
|
gpio->gpio.get = tegra186_gpio_get,
|
|
gpio->gpio.set = tegra186_gpio_set;
|
|
gpio->gpio.set_config = tegra186_gpio_set_config;
|
|
gpio->gpio.add_pin_ranges = tegra186_gpio_add_pin_ranges;
|
|
|
|
gpio->gpio.base = -1;
|
|
|
|
for (i = 0; i < gpio->soc->num_ports; i++)
|
|
gpio->gpio.ngpio += gpio->soc->ports[i].pins;
|
|
|
|
names = devm_kcalloc(gpio->gpio.parent, gpio->gpio.ngpio,
|
|
sizeof(*names), GFP_KERNEL);
|
|
if (!names)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
|
|
const struct tegra_gpio_port *port = &gpio->soc->ports[i];
|
|
char *name;
|
|
|
|
for (j = 0; j < port->pins; j++) {
|
|
name = devm_kasprintf(gpio->gpio.parent, GFP_KERNEL,
|
|
"P%s.%02x", port->name, j);
|
|
if (!name)
|
|
return -ENOMEM;
|
|
|
|
names[offset + j] = name;
|
|
}
|
|
|
|
offset += port->pins;
|
|
}
|
|
|
|
gpio->gpio.names = (const char * const *)names;
|
|
|
|
gpio->gpio.of_node = pdev->dev.of_node;
|
|
gpio->gpio.of_gpio_n_cells = 2;
|
|
gpio->gpio.of_xlate = tegra186_gpio_of_xlate;
|
|
|
|
gpio->intc.name = pdev->dev.of_node->name;
|
|
gpio->intc.irq_ack = tegra186_irq_ack;
|
|
gpio->intc.irq_mask = tegra186_irq_mask;
|
|
gpio->intc.irq_unmask = tegra186_irq_unmask;
|
|
gpio->intc.irq_set_type = tegra186_irq_set_type;
|
|
gpio->intc.irq_set_wake = tegra186_irq_set_wake;
|
|
|
|
irq = &gpio->gpio.irq;
|
|
irq->chip = &gpio->intc;
|
|
irq->fwnode = of_node_to_fwnode(pdev->dev.of_node);
|
|
irq->child_to_parent_hwirq = tegra186_gpio_child_to_parent_hwirq;
|
|
irq->populate_parent_alloc_arg = tegra186_gpio_populate_parent_fwspec;
|
|
irq->child_offset_to_irq = tegra186_gpio_child_offset_to_irq;
|
|
irq->child_irq_domain_ops.translate = tegra186_gpio_irq_domain_translate;
|
|
irq->handler = handle_simple_irq;
|
|
irq->default_type = IRQ_TYPE_NONE;
|
|
irq->parent_handler = tegra186_gpio_irq;
|
|
irq->parent_handler_data = gpio;
|
|
irq->num_parents = gpio->num_irq;
|
|
irq->parents = gpio->irq;
|
|
|
|
np = of_find_matching_node(NULL, tegra186_pmc_of_match);
|
|
if (np) {
|
|
irq->parent_domain = irq_find_host(np);
|
|
of_node_put(np);
|
|
|
|
if (!irq->parent_domain)
|
|
return -EPROBE_DEFER;
|
|
}
|
|
|
|
tegra186_gpio_init_route_mapping(gpio);
|
|
|
|
irq->map = devm_kcalloc(&pdev->dev, gpio->gpio.ngpio,
|
|
sizeof(*irq->map), GFP_KERNEL);
|
|
if (!irq->map)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0, offset = 0; i < gpio->soc->num_ports; i++) {
|
|
const struct tegra_gpio_port *port = &gpio->soc->ports[i];
|
|
|
|
for (j = 0; j < port->pins; j++)
|
|
irq->map[offset + j] = irq->parents[port->bank];
|
|
|
|
offset += port->pins;
|
|
}
|
|
|
|
platform_set_drvdata(pdev, gpio);
|
|
|
|
err = devm_gpiochip_add_data(&pdev->dev, &gpio->gpio, gpio);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra186_gpio_remove(struct platform_device *pdev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define TEGRA186_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
|
|
[TEGRA186_MAIN_GPIO_PORT_##_name] = { \
|
|
.name = #_name, \
|
|
.bank = _bank, \
|
|
.port = _port, \
|
|
.pins = _pins, \
|
|
}
|
|
|
|
static const struct tegra_gpio_port tegra186_main_ports[] = {
|
|
TEGRA186_MAIN_GPIO_PORT( A, 2, 0, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( B, 3, 0, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( C, 3, 1, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( D, 3, 2, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( E, 2, 1, 8),
|
|
TEGRA186_MAIN_GPIO_PORT( F, 2, 2, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( G, 4, 1, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( H, 1, 0, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( I, 0, 4, 8),
|
|
TEGRA186_MAIN_GPIO_PORT( J, 5, 0, 8),
|
|
TEGRA186_MAIN_GPIO_PORT( K, 5, 1, 1),
|
|
TEGRA186_MAIN_GPIO_PORT( L, 1, 1, 8),
|
|
TEGRA186_MAIN_GPIO_PORT( M, 5, 3, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( N, 0, 0, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( O, 0, 1, 4),
|
|
TEGRA186_MAIN_GPIO_PORT( P, 4, 0, 7),
|
|
TEGRA186_MAIN_GPIO_PORT( Q, 0, 2, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( R, 0, 5, 6),
|
|
TEGRA186_MAIN_GPIO_PORT( T, 0, 3, 4),
|
|
TEGRA186_MAIN_GPIO_PORT( X, 1, 2, 8),
|
|
TEGRA186_MAIN_GPIO_PORT( Y, 1, 3, 7),
|
|
TEGRA186_MAIN_GPIO_PORT(BB, 2, 3, 2),
|
|
TEGRA186_MAIN_GPIO_PORT(CC, 5, 2, 4),
|
|
};
|
|
|
|
static const struct tegra_gpio_soc tegra186_main_soc = {
|
|
.num_ports = ARRAY_SIZE(tegra186_main_ports),
|
|
.ports = tegra186_main_ports,
|
|
.name = "tegra186-gpio",
|
|
.instance = 0,
|
|
};
|
|
|
|
#define TEGRA186_AON_GPIO_PORT(_name, _bank, _port, _pins) \
|
|
[TEGRA186_AON_GPIO_PORT_##_name] = { \
|
|
.name = #_name, \
|
|
.bank = _bank, \
|
|
.port = _port, \
|
|
.pins = _pins, \
|
|
}
|
|
|
|
static const struct tegra_gpio_port tegra186_aon_ports[] = {
|
|
TEGRA186_AON_GPIO_PORT( S, 0, 1, 5),
|
|
TEGRA186_AON_GPIO_PORT( U, 0, 2, 6),
|
|
TEGRA186_AON_GPIO_PORT( V, 0, 4, 8),
|
|
TEGRA186_AON_GPIO_PORT( W, 0, 5, 8),
|
|
TEGRA186_AON_GPIO_PORT( Z, 0, 7, 4),
|
|
TEGRA186_AON_GPIO_PORT(AA, 0, 6, 8),
|
|
TEGRA186_AON_GPIO_PORT(EE, 0, 3, 3),
|
|
TEGRA186_AON_GPIO_PORT(FF, 0, 0, 5),
|
|
};
|
|
|
|
static const struct tegra_gpio_soc tegra186_aon_soc = {
|
|
.num_ports = ARRAY_SIZE(tegra186_aon_ports),
|
|
.ports = tegra186_aon_ports,
|
|
.name = "tegra186-gpio-aon",
|
|
.instance = 1,
|
|
};
|
|
|
|
#define TEGRA194_MAIN_GPIO_PORT(_name, _bank, _port, _pins) \
|
|
[TEGRA194_MAIN_GPIO_PORT_##_name] = { \
|
|
.name = #_name, \
|
|
.bank = _bank, \
|
|
.port = _port, \
|
|
.pins = _pins, \
|
|
}
|
|
|
|
static const struct tegra_gpio_port tegra194_main_ports[] = {
|
|
TEGRA194_MAIN_GPIO_PORT( A, 1, 2, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( B, 4, 7, 2),
|
|
TEGRA194_MAIN_GPIO_PORT( C, 4, 3, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( D, 4, 4, 4),
|
|
TEGRA194_MAIN_GPIO_PORT( E, 4, 5, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( F, 4, 6, 6),
|
|
TEGRA194_MAIN_GPIO_PORT( G, 4, 0, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( H, 4, 1, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( I, 4, 2, 5),
|
|
TEGRA194_MAIN_GPIO_PORT( J, 5, 1, 6),
|
|
TEGRA194_MAIN_GPIO_PORT( K, 3, 0, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( L, 3, 1, 4),
|
|
TEGRA194_MAIN_GPIO_PORT( M, 2, 3, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( N, 2, 4, 3),
|
|
TEGRA194_MAIN_GPIO_PORT( O, 5, 0, 6),
|
|
TEGRA194_MAIN_GPIO_PORT( P, 2, 5, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( Q, 2, 6, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( R, 2, 7, 6),
|
|
TEGRA194_MAIN_GPIO_PORT( S, 3, 3, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( T, 3, 4, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( U, 3, 5, 1),
|
|
TEGRA194_MAIN_GPIO_PORT( V, 1, 0, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( W, 1, 1, 2),
|
|
TEGRA194_MAIN_GPIO_PORT( X, 2, 0, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( Y, 2, 1, 8),
|
|
TEGRA194_MAIN_GPIO_PORT( Z, 2, 2, 8),
|
|
TEGRA194_MAIN_GPIO_PORT(FF, 3, 2, 2),
|
|
TEGRA194_MAIN_GPIO_PORT(GG, 0, 0, 2)
|
|
};
|
|
|
|
static const struct tegra186_pin_range tegra194_main_pin_ranges[] = {
|
|
{ TEGRA194_MAIN_GPIO(GG, 0), "pex_l5_clkreq_n_pgg0" },
|
|
{ TEGRA194_MAIN_GPIO(GG, 1), "pex_l5_rst_n_pgg1" },
|
|
};
|
|
|
|
static const struct tegra_gpio_soc tegra194_main_soc = {
|
|
.num_ports = ARRAY_SIZE(tegra194_main_ports),
|
|
.ports = tegra194_main_ports,
|
|
.name = "tegra194-gpio",
|
|
.instance = 0,
|
|
.num_pin_ranges = ARRAY_SIZE(tegra194_main_pin_ranges),
|
|
.pin_ranges = tegra194_main_pin_ranges,
|
|
.pinmux = "nvidia,tegra194-pinmux",
|
|
};
|
|
|
|
#define TEGRA194_AON_GPIO_PORT(_name, _bank, _port, _pins) \
|
|
[TEGRA194_AON_GPIO_PORT_##_name] = { \
|
|
.name = #_name, \
|
|
.bank = _bank, \
|
|
.port = _port, \
|
|
.pins = _pins, \
|
|
}
|
|
|
|
static const struct tegra_gpio_port tegra194_aon_ports[] = {
|
|
TEGRA194_AON_GPIO_PORT(AA, 0, 3, 8),
|
|
TEGRA194_AON_GPIO_PORT(BB, 0, 4, 4),
|
|
TEGRA194_AON_GPIO_PORT(CC, 0, 1, 8),
|
|
TEGRA194_AON_GPIO_PORT(DD, 0, 2, 3),
|
|
TEGRA194_AON_GPIO_PORT(EE, 0, 0, 7)
|
|
};
|
|
|
|
static const struct tegra_gpio_soc tegra194_aon_soc = {
|
|
.num_ports = ARRAY_SIZE(tegra194_aon_ports),
|
|
.ports = tegra194_aon_ports,
|
|
.name = "tegra194-gpio-aon",
|
|
.instance = 1,
|
|
};
|
|
|
|
static const struct of_device_id tegra186_gpio_of_match[] = {
|
|
{
|
|
.compatible = "nvidia,tegra186-gpio",
|
|
.data = &tegra186_main_soc
|
|
}, {
|
|
.compatible = "nvidia,tegra186-gpio-aon",
|
|
.data = &tegra186_aon_soc
|
|
}, {
|
|
.compatible = "nvidia,tegra194-gpio",
|
|
.data = &tegra194_main_soc
|
|
}, {
|
|
.compatible = "nvidia,tegra194-gpio-aon",
|
|
.data = &tegra194_aon_soc
|
|
}, {
|
|
/* sentinel */
|
|
}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra186_gpio_of_match);
|
|
|
|
static struct platform_driver tegra186_gpio_driver = {
|
|
.driver = {
|
|
.name = "tegra186-gpio",
|
|
.of_match_table = tegra186_gpio_of_match,
|
|
},
|
|
.probe = tegra186_gpio_probe,
|
|
.remove = tegra186_gpio_remove,
|
|
};
|
|
module_platform_driver(tegra186_gpio_driver);
|
|
|
|
MODULE_DESCRIPTION("NVIDIA Tegra186 GPIO controller driver");
|
|
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
|
|
MODULE_LICENSE("GPL v2");
|