i2c.h File Reference

#include <amdblocks/gpio.h>
#include <device/i2c.h>
#include <drivers/i2c/designware/dw_i2c.h>
#include <types.h>

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Data Structures
struct	soc_i2c_ctrlr_info
	Data structure to hold SoC I2C controller information @bar: MMIO base address for the I2C bus. More...
struct	soc_i2c_scl_pin
	Data structure to identify GPIO to be toggled to reset peripherals on an I2C bus. More...
struct	soc_i2c_peripheral_reset_info
	Information about I2C peripherals that need to be reset. More...
struct	i2c_pad_control

Macros
#define	I2C_RESET_SCL_PIN(pin_name, pin_mask_value)

Enumerations
enum	i2c_ctrlr_mode { I2C_MASTER_MODE , I2C_PERIPHERAL_MODE }
enum	i2c_pad_rx_level {   I2C_PAD_RX_NO_CHANGE , I2C_PAD_RX_OFF , I2C_PAD_RX_3_3V , I2C_PAD_RX_1_8V ,   I2C_PAD_RX_1_1V }

Functions
void	fch_i2c_pad_init (unsigned int bus, enum i2c_speed speed, const struct i2c_pad_control *ctrl)
void	fch_i23c_pad_init (unsigned int bus, enum i2c_speed speed, const struct i2c_pad_control *ctrl)
void	soc_i2c_misc_init (unsigned int bus, const struct dw_i2c_bus_config *cfg)
const struct soc_i2c_ctrlr_info *	soc_get_i2c_ctrlr_info (size_t *num_ctrlrs)
const struct dw_i2c_bus_config *	soc_get_i2c_bus_config (size_t *num_buses)
void	i2c_soc_early_init (void)
void	i2c_soc_init (void)
void	sb_reset_i2c_peripherals (const struct soc_i2c_peripheral_reset_info *reset_info)

Macro Definition Documentation

I2C_RESET_SCL_PIN

#define I2C_RESET_SCL_PIN	(		pin_name,
			pin_mask_value
	)

Value:

{                                                                                       \
        .pin = PAD_CFG_STRUCT(pin_name, pin_name ## _IOMUX_GPIOxx, PAD_OUTPUT(HIGH)),   \
        .pin_mask = pin_mask_value,                                                     \
}

Definition at line 39 of file i2c.h.

Enumeration Type Documentation

i2c_ctrlr_mode

enum i2c_ctrlr_mode

Enumerator
I2C_MASTER_MODE
I2C_PERIPHERAL_MODE

Definition at line 12 of file i2c.h.

i2c_pad_rx_level

enum i2c_pad_rx_level

Enumerator
I2C_PAD_RX_NO_CHANGE
I2C_PAD_RX_OFF
I2C_PAD_RX_3_3V
I2C_PAD_RX_1_8V
I2C_PAD_RX_1_1V

Definition at line 59 of file i2c.h.

Function Documentation

fch_i23c_pad_init()

void fch_i23c_pad_init	(	unsigned int	bus,
		enum i2c_speed	speed,
		const struct i2c_pad_control *	ctrl
	)

Definition at line 9 of file i23c_pad_ctrl.c.

References BIOS_WARNING, I23C_PAD_CTRL_MODE_1_1V, I23C_PAD_CTRL_MODE_1_8V, I23C_PAD_CTRL_MODE_1_8V_1_1V_MASK, I23C_PAD_CTRL_MODE_I2C, I23C_PAD_CTRL_MODE_I3C_I2C_MASK, I23C_PAD_CTRL_RX_SEL_MASK, I23C_PAD_CTRL_RX_SEL_OFF, I23C_PAD_CTRL_RX_SEL_ON, I2C_PAD_RX_1_1V, I2C_PAD_RX_1_8V, I2C_PAD_RX_NO_CHANGE, I2C_PAD_RX_OFF, MISC_I23C_PAD_CTRL, misc_read32(), misc_write32(), printk, and i2c_pad_control::rx_level.

Referenced by soc_i2c_misc_init().

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fch_i2c_pad_init()

void fch_i2c_pad_init	(	unsigned int	bus,
		enum i2c_speed	speed,
		const struct i2c_pad_control *	ctrl
	)

Definition at line 9 of file i2c_pad_ctrl.c.

References BIOS_WARNING, I2C_PAD_CTRL_FALLSLEW_EN, I2C_PAD_CTRL_FALLSLEW_LOW, I2C_PAD_CTRL_FALLSLEW_MASK, I2C_PAD_CTRL_FALLSLEW_STD, I2C_PAD_CTRL_NG_MASK, I2C_PAD_CTRL_NG_NORMAL, I2C_PAD_CTRL_RX_SEL_1_8V, I2C_PAD_CTRL_RX_SEL_3_3V, I2C_PAD_CTRL_RX_SEL_MASK, I2C_PAD_CTRL_RX_SEL_OFF, I2C_PAD_RX_1_8V, I2C_PAD_RX_3_3V, I2C_PAD_RX_NO_CHANGE, I2C_PAD_RX_OFF, I2C_SPEED_STANDARD, MISC_I2C_PAD_CTRL, misc_read32(), misc_write32(), printk, and i2c_pad_control::rx_level.

Referenced by soc_i2c_misc_init().

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i2c_soc_early_init()

void i2c_soc_early_init

(

void

)

Definition at line 108 of file i2c.c.

References dw_i2c_soc_init().

Referenced by bootblock_soc_init(), fch_early_init(), and verstage_soc_i2c_init().

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i2c_soc_init()

void i2c_soc_init

(

void

)

Definition at line 113 of file i2c.c.

References dw_i2c_soc_init().

Referenced by fch_init(), and mainboard_init().

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sb_reset_i2c_peripherals()

void sb_reset_i2c_peripherals

(

const struct soc_i2c_peripheral_reset_info *

reset_info

)

Definition at line 148 of file i2c.c.

References assert, drive_scl(), soc_amd_gpio::gpio, gpio_configure_pads(), gpio_restore_pin_registers(), gpio_save_pin_registers(), soc_i2c_peripheral_reset_info::i2c_scl, soc_i2c_peripheral_reset_info::i2c_scl_reset_mask, MAX_PIN_COUNT, soc_i2c_peripheral_reset_info::num_pins, and soc_i2c_scl_pin::pin.

Referenced by reset_i2c_peripherals().

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soc_get_i2c_bus_config()

const struct dw_i2c_bus_config* soc_get_i2c_bus_config

(

size_t *

num_buses

)

Definition at line 51 of file i2c.c.

References ARRAY_SIZE, config, and config_of_soc.

Referenced by dw_i2c_get_soc_cfg(), and dw_i2c_soc_init().

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soc_get_i2c_ctrlr_info()

const struct soc_i2c_ctrlr_info* soc_get_i2c_ctrlr_info

(

size_t *

num_ctrlrs

)

Definition at line 45 of file i2c.c.

References ARRAY_SIZE, and i2c_ctrlr.

Referenced by dw_i2c_base_address(), dw_i2c_soc_dev_to_bus(), dw_i2c_soc_init(), and i2c_acpi_name().

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soc_i2c_misc_init()

void soc_i2c_misc_init	(	unsigned int	bus,
		const struct dw_i2c_bus_config *	cfg
	)

Definition at line 35 of file i2c.c.

References ARRAY_SIZE, config, config_of_soc, fch_i23c_pad_init(), fch_i2c_pad_init(), I2C_PAD_RX_3_3V, i2c_pad_control::rx_level, and dw_i2c_bus_config::speed.

Referenced by dw_i2c_soc_init().

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