gpio.c File Reference

#include <device/mmio.h>
#include <gpio.h>

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Enumerations
enum	{ GPIO_DIRECTION_IN = 0 , GPIO_DIRECTION_OUT = 1 }
enum	{ GPIO_MODE = 0 }
enum	{ MAX_EINT_REG_BITS = 32 }

Functions
static void	pos_bit_calc (gpio_t gpio, u32 *pos, u32 *bit)
static void	pos_bit_calc_for_mode (gpio_t gpio, u32 *pos, u32 *bit)
static s32	gpio_set_dir (gpio_t gpio, u32 dir)
void	gpio_set_mode (gpio_t gpio, int mode)
int	gpio_get (gpio_t gpio)
void	gpio_set (gpio_t gpio, int output)
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)
static void	pos_bit_calc_for_eint (gpio_t gpio, u32 *pos, u32 *bit)
int	gpio_eint_poll (gpio_t gpio)
void	gpio_eint_configure (gpio_t gpio, enum gpio_irq_type type)

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
GPIO_DIRECTION_IN
GPIO_DIRECTION_OUT

Definition at line 6 of file gpio.c.

anonymous enum

anonymous enum

Enumerator
GPIO_MODE

Definition at line 11 of file gpio.c.

anonymous enum

anonymous enum

Enumerator
MAX_EINT_REG_BITS

Definition at line 116 of file gpio.c.

Function Documentation

gpio_eint_configure()

void gpio_eint_configure	(	gpio_t	gpio,
		enum gpio_irq_type	type
	)

Definition at line 142 of file gpio.c.

References eint_regs::d0en, gpio_input_pullup(), IRQ_TYPE_EDGE_FALLING, IRQ_TYPE_EDGE_RISING, IRQ_TYPE_LEVEL_HIGH, IRQ_TYPE_LEVEL_LOW, mask, eint_regs::mask_clr, mtk_eint, eint_regs::pol_clr, eint_regs::pol_set, pos_bit_calc_for_eint(), eint_section::regs, eint_regs::sens_clr, eint_regs::sens_set, type, and write32().

Referenced by bootblock_mainboard_init(), and mainboard_early_init().

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gpio_eint_poll()

int gpio_eint_poll

(

gpio_t

gpio

)

Definition at line 126 of file gpio.c.

References eint_regs::ack, mtk_eint, pos_bit_calc_for_eint(), read32(), eint_section::regs, eint_regs::sta, and write32().

Referenced by tis_plat_irq_status().

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gpio_get()

int gpio_get

(

gpio_t

gpio

)

Definition at line 56 of file gpio.c.

References gpio_regs::din, mtk_gpio, pos_bit_calc(), read32(), and val_regs::val.

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gpio_input()

void gpio_input

(

gpio_t

gpio

)

Definition at line 101 of file gpio.c.

References GPIO_DIRECTION_IN, GPIO_MODE, GPIO_PULL_DISABLE, GPIO_PULL_DOWN, gpio_set_dir(), gpio_set_mode(), and gpio_set_pull().

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gpio_input_pulldown()

void gpio_input_pulldown

(

gpio_t

gpio

)

Definition at line 87 of file gpio.c.

References GPIO_DIRECTION_IN, GPIO_MODE, GPIO_PULL_DOWN, GPIO_PULL_ENABLE, gpio_set_dir(), gpio_set_mode(), and gpio_set_pull().

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gpio_input_pullup()

void gpio_input_pullup

(

gpio_t

gpio

)

Definition at line 94 of file gpio.c.

References GPIO_DIRECTION_IN, GPIO_MODE, GPIO_PULL_ENABLE, GPIO_PULL_UP, gpio_set_dir(), gpio_set_mode(), and gpio_set_pull().

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gpio_output()

void gpio_output	(	gpio_t	gpio,
		int	value
	)

Definition at line 108 of file gpio.c.

References GPIO_DIRECTION_OUT, GPIO_MODE, GPIO_PULL_DISABLE, GPIO_PULL_DOWN, gpio_set(), gpio_set_dir(), gpio_set_mode(), gpio_set_pull(), and value.

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gpio_set()

void gpio_set	(	gpio_t	gpio,
		int	output
	)

Definition at line 71 of file gpio.c.

References gpio_regs::dout, mtk_gpio, pos_bit_calc(), val_regs::rst, val_regs::set, and write32().

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gpio_set_dir()

static s32 gpio_set_dir ( gpio_t  gpio, u32  dir  )

static

Definition at line 27 of file gpio.c.

References gpio_regs::dir, GPIO_DIRECTION_IN, mtk_gpio, pos_bit_calc(), val_regs::rst, val_regs::set, and write32().

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

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gpio_set_mode()

void gpio_set_mode	(	gpio_t	gpio,
		int	mode
	)

Definition at line 45 of file gpio.c.

References clrsetbits32, GPIO_MODE_BITS, mask, gpio_regs::mode, mtk_gpio, pos_bit_calc_for_mode(), and val_regs::val.

Referenced by __gpio_input(), __gpio_output(), configure_audio(), configure_i2s(), gpio_input(), gpio_input_pulldown(), gpio_input_pullup(), gpio_output(), i2c_set_gpio_pinmux(), mainboard_early_init(), mtk_i2c_set_gpio_pinmux(), mtk_pcie_set_pinmux(), mtk_snfc_init(), mtk_spi_set_gpio_pinmux(), nor_set_gpio_pinmux(), power_on_panel(), setup_pinmux(), and tegra_software_i2c_disable().

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pos_bit_calc()

static void pos_bit_calc ( gpio_t  gpio, u32 *  pos, u32 *  bit  )

static

Definition at line 15 of file gpio.c.

References MAX_GPIO_REG_BITS.

Referenced by gpio_get(), gpio_set(), and gpio_set_dir().

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pos_bit_calc_for_eint()

static void pos_bit_calc_for_eint ( gpio_t  gpio, u32 *  pos, u32 *  bit  )

static

Definition at line 120 of file gpio.c.

References MAX_EINT_REG_BITS.

Referenced by gpio_eint_configure(), and gpio_eint_poll().

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pos_bit_calc_for_mode()

static void pos_bit_calc_for_mode ( gpio_t  gpio, u32 *  pos, u32 *  bit  )

static

Definition at line 21 of file gpio.c.

References GPIO_MODE_BITS, and MAX_GPIO_MODE_PER_REG.

Referenced by gpio_set_mode().

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