i2c.h File Reference

#include <stdint.h>

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Data Structures
struct	tegra_i2c_bus_info
struct	tegra_i2c_regs

Enumerations
enum	{   IOHEADER_PROTHDRSZ_SHIFT = 28 , IOHEADER_PROTHDRSZ_MASK = 0x3 << IOHEADER_PROTHDRSZ_SHIFT , IOHEADER_PKTID_SHIFT = 16 , IOHEADER_PKTID_MASK = 0xff << IOHEADER_PKTID_SHIFT ,   IOHEADER_CONTROLLER_ID_SHIFT = 12 , IOHEADER_CONTROLLER_ID_MASK = 0xf << IOHEADER_CONTROLLER_ID_SHIFT , IOHEADER_PROTOCOL_SHIFT = 4 , IOHEADER_PROTOCOL_MASK = 0xf << IOHEADER_PROTOCOL_SHIFT ,   IOHEADER_PROTOCOL_I2C = 1 << IOHEADER_PROTOCOL_SHIFT , IOHEADER_PKTTYPE_SHIFT = 0 , IOHEADER_PKTTYPE_MASK = 0x7 << IOHEADER_PKTTYPE_SHIFT , IOHEADER_PKTTYPE_REQUEST = 0 << IOHEADER_PKTTYPE_SHIFT ,   IOHEADER_PKTTYPE_RESPONSE = 1 << IOHEADER_PKTTYPE_SHIFT , IOHEADER_PKTTYPE_INTERRUPT = 2 << IOHEADER_PKTTYPE_SHIFT , IOHEADER_PKTTYPE_STOP = 3 << IOHEADER_PKTTYPE_SHIFT , IOHEADER_PAYLOADSIZE_SHIFT = 0 ,   IOHEADER_PAYLOADSIZE_MASK = 0xfff << IOHEADER_PAYLOADSIZE_SHIFT }
enum	{   IOHEADER_I2C_REQ_RESP_FREQ_MASK = 0x1 << 25 , IOHEADER_I2C_REQ_RESP_FREQ_END = 0 << 25 , IOHEADER_I2C_REQ_RESP_FREQ_EACH = 1 << 25 , IOHEADER_I2C_REQ_RESP_ENABLE = 0x1 << 24 ,   IOHEADER_I2C_REQ_HS_MODE = 0x1 << 22 , IOHEADER_I2C_REQ_CONTINUE_ON_NACK = 0x1 << 21 , IOHEADER_I2C_REQ_SEND_START_BYTE = 0x1 << 20 , IOHEADER_I2C_REQ_READ = 0x1 << 19 ,   IOHEADER_I2C_REQ_ADDR_MODE_MASK = 0x1 << 18 , IOHEADER_I2C_REQ_ADDR_MODE_7BIT = 0 << 18 , IOHEADER_I2C_REQ_ADDR_MODE_10BIT = 1 << 18 , IOHEADER_I2C_REQ_IE = 0x1 << 17 ,   IOHEADER_I2C_REQ_REPEAT_START = 0x1 << 16 , IOHEADER_I2C_REQ_STOP = 0x0 << 16 , IOHEADER_I2C_REQ_CONTINUE_XFER = 0x1 << 15 , IOHEADER_I2C_REQ_HS_MASTER_ADDR_SHIFT = 12 ,   IOHEADER_I2C_REQ_HS_MASTER_ADDR_MASK , IOHEADER_I2C_REQ_SLAVE_ADDR_SHIFT = 0 , IOHEADER_I2C_REQ_SLAVE_ADDR_MASK }
enum	{   I2C_CNFG_MSTR_CLR_BUS_ON_TIMEOUT = 0x1 << 15 , I2C_CNFG_DEBOUNCE_CNT_SHIFT = 12 , I2C_CNFG_DEBOUNCE_CNT_MASK = 0x7 << I2C_CNFG_DEBOUNCE_CNT_SHIFT , I2C_CNFG_NEW_MASTER_FSM = 0x1 << 11 ,   I2C_CNFG_PACKET_MODE_EN = 0x1 << 10 , I2C_CNFG_SEND = 0x1 << 9 , I2C_CNFG_NOACK = 0x1 << 8 , I2C_CNFG_CMD2 = 0x1 << 7 ,   I2C_CNFG_CMD1 = 0x1 << 6 , I2C_CNFG_START = 0x1 << 5 , I2C_CNFG_SLV2_SHIFT = 4 , I2C_CNFG_SLV2_MASK = 0x1 << I2C_CNFG_SLV2_SHIFT ,   I2C_CNFG_LENGTH_SHIFT = 1 , I2C_CNFG_LENGTH_MASK = 0x7 << I2C_CNFG_LENGTH_SHIFT , I2C_CNFG_A_MOD = 0x1 << 0 }
enum	{   I2C_PKT_STATUS_COMPLETE = 0x1 << 24 , I2C_PKT_STATUS_PKT_ID_SHIFT = 16 , I2C_PKT_STATUS_PKT_ID_MASK = 0xff << I2C_PKT_STATUS_PKT_ID_SHIFT , I2C_PKT_STATUS_BYTENUM_SHIFT = 4 ,   I2C_PKT_STATUS_BYTENUM_MASK = 0xfff << I2C_PKT_STATUS_BYTENUM_SHIFT , I2C_PKT_STATUS_NOACK_ADDR = 0x1 << 3 , I2C_PKT_STATUS_NOACK_DATA = 0x1 << 2 , I2C_PKT_STATUS_ARB_LOST = 0x1 << 1 ,   I2C_PKT_STATUS_BUSY = 0x1 << 0 }
enum	{ I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_SHIFT = 4 , I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_MASK , I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_SHIFT = 0 , I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_MASK }
enum	{   I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_SHIFT = 16 , I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_MASK , I2C_BUS_CLEAR_CONFIG_BC_STOP_COND_STOP = 0x1 << 2 , I2C_BUS_CLEAR_CONFIG_BC_TERMINATE_IMMEDIATE = 0x1 << 1 ,   I2C_BUS_CLEAR_CONFIG_BC_ENABLE = 0x1 << 0 , I2C_BUS_CLEAR_STATUS_CLEARED = 0x1 << 0 , I2C_CONFIG_LOAD_MSTR_CONFIG_LOAD_ENABLE = 0x1 << 0 }

Functions
void	i2c_init (unsigned int bus)
void	tegra_software_i2c_init (unsigned int bus)
void	tegra_software_i2c_disable (unsigned int bus)
	check_member (tegra_i2c_regs, config_load, 0x8C)

Variables
struct tegra_i2c_bus_info	tegra_i2c_info []
const unsigned int	num_i2c_buses

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
IOHEADER_PROTHDRSZ_SHIFT
IOHEADER_PROTHDRSZ_MASK
IOHEADER_PKTID_SHIFT
IOHEADER_PKTID_MASK
IOHEADER_CONTROLLER_ID_SHIFT
IOHEADER_CONTROLLER_ID_MASK
IOHEADER_PROTOCOL_SHIFT
IOHEADER_PROTOCOL_MASK
IOHEADER_PROTOCOL_I2C
IOHEADER_PKTTYPE_SHIFT
IOHEADER_PKTTYPE_MASK
IOHEADER_PKTTYPE_REQUEST
IOHEADER_PKTTYPE_RESPONSE
IOHEADER_PKTTYPE_INTERRUPT
IOHEADER_PKTTYPE_STOP
IOHEADER_PAYLOADSIZE_SHIFT
IOHEADER_PAYLOADSIZE_MASK

Definition at line 12 of file i2c.h.

anonymous enum

anonymous enum

Enumerator
IOHEADER_I2C_REQ_RESP_FREQ_MASK
IOHEADER_I2C_REQ_RESP_FREQ_END
IOHEADER_I2C_REQ_RESP_FREQ_EACH
IOHEADER_I2C_REQ_RESP_ENABLE
IOHEADER_I2C_REQ_HS_MODE
IOHEADER_I2C_REQ_CONTINUE_ON_NACK
IOHEADER_I2C_REQ_SEND_START_BYTE
IOHEADER_I2C_REQ_READ
IOHEADER_I2C_REQ_ADDR_MODE_MASK
IOHEADER_I2C_REQ_ADDR_MODE_7BIT
IOHEADER_I2C_REQ_ADDR_MODE_10BIT
IOHEADER_I2C_REQ_IE
IOHEADER_I2C_REQ_REPEAT_START
IOHEADER_I2C_REQ_STOP
IOHEADER_I2C_REQ_CONTINUE_XFER
IOHEADER_I2C_REQ_HS_MASTER_ADDR_SHIFT
IOHEADER_I2C_REQ_HS_MASTER_ADDR_MASK
IOHEADER_I2C_REQ_SLAVE_ADDR_SHIFT
IOHEADER_I2C_REQ_SLAVE_ADDR_MASK

Definition at line 35 of file i2c.h.

anonymous enum

anonymous enum

Enumerator
I2C_CNFG_MSTR_CLR_BUS_ON_TIMEOUT
I2C_CNFG_DEBOUNCE_CNT_SHIFT
I2C_CNFG_DEBOUNCE_CNT_MASK
I2C_CNFG_NEW_MASTER_FSM
I2C_CNFG_PACKET_MODE_EN
I2C_CNFG_SEND
I2C_CNFG_NOACK
I2C_CNFG_CMD2
I2C_CNFG_CMD1
I2C_CNFG_START
I2C_CNFG_SLV2_SHIFT
I2C_CNFG_SLV2_MASK
I2C_CNFG_LENGTH_SHIFT
I2C_CNFG_LENGTH_MASK
I2C_CNFG_A_MOD

Definition at line 59 of file i2c.h.

anonymous enum

anonymous enum

Enumerator
I2C_PKT_STATUS_COMPLETE
I2C_PKT_STATUS_PKT_ID_SHIFT
I2C_PKT_STATUS_PKT_ID_MASK
I2C_PKT_STATUS_BYTENUM_SHIFT
I2C_PKT_STATUS_BYTENUM_MASK
I2C_PKT_STATUS_NOACK_ADDR
I2C_PKT_STATUS_NOACK_DATA
I2C_PKT_STATUS_ARB_LOST
I2C_PKT_STATUS_BUSY

Definition at line 77 of file i2c.h.

anonymous enum

anonymous enum

Enumerator
I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_SHIFT
I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_MASK
I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_SHIFT
I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_MASK

Definition at line 89 of file i2c.h.

anonymous enum

anonymous enum

Enumerator
I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_SHIFT
I2C_BUS_CLEAR_CONFIG_BC_SCLK_THRESHOLD_MASK
I2C_BUS_CLEAR_CONFIG_BC_STOP_COND_STOP
I2C_BUS_CLEAR_CONFIG_BC_TERMINATE_IMMEDIATE
I2C_BUS_CLEAR_CONFIG_BC_ENABLE
I2C_BUS_CLEAR_STATUS_CLEARED
I2C_CONFIG_LOAD_MSTR_CONFIG_LOAD_ENABLE

Definition at line 98 of file i2c.h.

Function Documentation

check_member()

check_member	(	tegra_i2c_regs	,
		config_load	,
		0x8C
	)

i2c_init()

void i2c_init

(

unsigned int

bus

)

Definition at line 198 of file i2c.c.

References tegra_i2c_bus_info::base, BIOS_ERR, I2C_CNFG_PACKET_MODE_EN, num_i2c_buses, printk, regs, tegra_i2c_info, and write32().

Referenced by bootblock_mainboard_init(), configure_codec(), configure_tpm(), configure_tpm_i2c_bus(), display_startup(), main(), mainboard_init(), parade_dp_bridge_setup(), platform_i2c_transfer(), prepare_backlight_i2c(), setup_power(), and tegra_i2c_send_recv().

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tegra_software_i2c_disable()

void tegra_software_i2c_disable

(

unsigned int

bus

)

Definition at line 68 of file software_i2c.c.

References GPIO_MODE_SPIO, GPIO_PINMUX_SHIFT, gpio_set_mode(), NULL, pinmux_func, PINMUX_INPUT_ENABLE, pinmux_set_config(), pins, scl, sda, and software_i2c.

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tegra_software_i2c_init()

void tegra_software_i2c_init

(

unsigned int

bus

)

Definition at line 59 of file software_i2c.c.

References software_i2c, tegra_ops, tegra_set_scl(), and tegra_set_sda().

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Variable Documentation

num_i2c_buses

const unsigned int num_i2c_buses

extern

Definition at line 40 of file i2c.c.

Referenced by i2c_init(), and platform_i2c_transfer().

tegra_i2c_info

struct tegra_i2c_bus_info tegra_i2c_info[]

extern

Definition at line 1 of file i2c.c.

Referenced by do_bus_clear(), i2c_init(), and tegra_i2c_send_recv().