coreboot: src/soc/nvidia/tegra/gpio.c File Reference

coreboot

coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.

#include <device/mmio.h>
#include <gpio.h>
#include <soc/addressmap.h>
#include <stddef.h>
#include <stdint.h>
#include "pinmux.h"

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Functions
static void	__gpio_input (gpio_t gpio, u32 pull)

static void	__gpio_output (gpio_t gpio, int value, u32 od)

static u32	gpio_read_port (int index, size_t offset)

static void	gpio_write_port (int index, size_t offset, u32 mask, u32 value)

void	gpio_set_mode (gpio_t gpio, enum gpio_mode mode)

int	gpio_get_mode (gpio_t gpio)

void	gpio_set_lock (gpio_t gpio)

int	gpio_get_lock (gpio_t gpio)

void	gpio_set_out_enable (gpio_t gpio, int enable)

int	gpio_get_out_enable (gpio_t gpio)

void	gpio_set (gpio_t gpio, int value)

int	gpio_get_out_value (gpio_t gpio)

int	gpio_get (gpio_t gpio)

int	gpio_get_int_status (gpio_t gpio)

void	gpio_set_int_enable (gpio_t gpio, int enable)

int	gpio_get_int_enable (gpio_t gpio)

void	gpio_set_int_level (gpio_t gpio, int high_rise, int edge, int delta)

void	gpio_get_int_level (gpio_t gpio, int high_rise, int edge, int *delta)

void	gpio_set_int_clear (gpio_t gpio)

void	gpio_input_pulldown (gpio_t gpio)

void	gpio_input_pullup (gpio_t gpio)

void	gpio_input (gpio_t gpio)

void	gpio_output (gpio_t gpio, int value)

void	gpio_output_open_drain (gpio_t gpio, int value)

Variables
static const struct gpio_bank *	gpio_banks = (void *)TEGRA_GPIO_BASE

Function Documentation

◆ __gpio_input()

static void __gpio_input	(	gpio_t	gpio,
		u32	pull
	)

static

Definition at line 11 of file gpio.c.

References GPIO_MODE_GPIO, GPIO_PINMUX_SHIFT, gpio_set_int_enable(), gpio_set_mode(), gpio_set_out_enable(), PINMUX_INPUT_ENABLE, pinmux_set_config(), and pull.

Referenced by gpio_input(), gpio_input_pulldown(), and gpio_input_pullup().

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◆ __gpio_output()

static void __gpio_output	(	gpio_t	gpio,
		int	value,
		u32	od
	)

static

Definition at line 21 of file gpio.c.

References GPIO_MODE_GPIO, GPIO_PINMUX_SHIFT, gpio_set(), gpio_set_int_enable(), gpio_set_mode(), gpio_set_out_enable(), PINMUX_PULL_NONE, pinmux_set_config(), and value.

Referenced by gpio_output(), and gpio_output_open_drain().

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◆ gpio_get()

int gpio_get ( gpio_t gpio )

Definition at line 120 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), gpio_bank::in_value, and offsetof.

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◆ gpio_get_int_enable()

int gpio_get_int_enable ( gpio_t gpio )

Definition at line 144 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), gpio_bank::int_enable, and offsetof.

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◆ gpio_get_int_level()

void gpio_get_int_level	(	gpio_t	gpio,
		int *	high_rise,
		int *	edge,
		int *	delta
	)

Definition at line 163 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), gpio_bank::int_level, and offsetof.

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◆ gpio_get_int_status()

int gpio_get_int_status ( gpio_t gpio )

Definition at line 128 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), gpio_bank::int_status, and offsetof.

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◆ gpio_get_lock()

int gpio_get_lock ( gpio_t gpio )

Definition at line 80 of file gpio.c.

References config, GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), and offsetof.

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◆ gpio_get_mode()

int gpio_get_mode ( gpio_t gpio )

Definition at line 64 of file gpio.c.

References config, GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), and offsetof.

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◆ gpio_get_out_enable()

int gpio_get_out_enable ( gpio_t gpio )

Definition at line 96 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), offsetof, and gpio_bank::out_enable.

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◆ gpio_get_out_value()

int gpio_get_out_value ( gpio_t gpio )

Definition at line 112 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_read_port(), offsetof, and gpio_bank::out_value.

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◆ gpio_input()

void gpio_input ( gpio_t gpio )

Definition at line 191 of file gpio.c.

References __gpio_input(), and PINMUX_PULL_NONE.

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◆ gpio_input_pulldown()

void gpio_input_pulldown ( gpio_t gpio )

Definition at line 181 of file gpio.c.

References __gpio_input(), and PINMUX_PULL_DOWN.

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◆ gpio_input_pullup()

void gpio_input_pullup ( gpio_t gpio )

Definition at line 186 of file gpio.c.

References __gpio_input(), and PINMUX_PULL_UP.

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◆ gpio_output()

void gpio_output	(	gpio_t	gpio,
		int	value
	)

Definition at line 196 of file gpio.c.

References __gpio_output(), and value.

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◆ gpio_output_open_drain()

void gpio_output_open_drain	(	gpio_t	gpio,
		int	value
	)

Definition at line 201 of file gpio.c.

References __gpio_output(), PINMUX_OPEN_DRAIN, and value.

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◆ gpio_read_port()

static u32 gpio_read_port	(	int	index,
		size_t	offset
	)

static

Definition at line 32 of file gpio.c.

References gpio_banks, GPIO_GPIOS_PER_BANK, GPIO_GPIOS_PER_PORT, offset, and read32().

Referenced by gpio_get(), gpio_get_int_enable(), gpio_get_int_level(), gpio_get_int_status(), gpio_get_lock(), gpio_get_mode(), gpio_get_out_enable(), and gpio_get_out_value().

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◆ gpio_set()

void gpio_set	(	gpio_t	gpio,
		int	value
	)

Definition at line 104 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), offsetof, gpio_bank::out_value, and value.

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◆ gpio_set_int_clear()

void gpio_set_int_clear ( gpio_t gpio )

Definition at line 173 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), gpio_bank::int_clear, and offsetof.

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◆ gpio_set_int_enable()

void gpio_set_int_enable	(	gpio_t	gpio,
		int	enable
	)

Definition at line 136 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), gpio_bank::int_enable, and offsetof.

Referenced by __gpio_input(), and __gpio_output().

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◆ gpio_set_int_level()

void gpio_set_int_level	(	gpio_t	gpio,
		int	high_rise,
		int	edge,
		int	delta
	)

Definition at line 152 of file gpio.c.

References config, GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), offsetof, and value.

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◆ gpio_set_lock()

void gpio_set_lock ( gpio_t gpio )

Definition at line 72 of file gpio.c.

References config, GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), and offsetof.

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◆ gpio_set_mode()

void gpio_set_mode	(	gpio_t	gpio,
		enum gpio_mode	mode
	)

Definition at line 56 of file gpio.c.

References config, GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), and offsetof.

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◆ gpio_set_out_enable()

void gpio_set_out_enable	(	gpio_t	gpio,
		int	enable
	)

Definition at line 88 of file gpio.c.

References GPIO_GPIOS_PER_PORT, GPIO_PINMUX_SHIFT, gpio_write_port(), offsetof, and gpio_bank::out_enable.

Referenced by __gpio_input(), and __gpio_output().

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◆ gpio_write_port()

static void gpio_write_port	(	int	index,
		size_t	offset,
		u32	mask,
		u32	value
	)

static

Definition at line 41 of file gpio.c.

References gpio_banks, GPIO_GPIOS_PER_BANK, GPIO_GPIOS_PER_PORT, mask, offset, read32(), value, and write32().

Referenced by gpio_set(), gpio_set_int_clear(), gpio_set_int_enable(), gpio_set_int_level(), gpio_set_lock(), gpio_set_mode(), and gpio_set_out_enable().

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Variable Documentation

◆ gpio_banks

const struct gpio_bank* gpio_banks = (void *)TEGRA_GPIO_BASE

static

Definition at line 30 of file gpio.c.

Referenced by gpio_read_port(), and gpio_write_port().

src
soc
nvidia
tegra
gpio.c
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