i2c.c File Reference

#include <device/mmio.h>
#include <console/console.h>
#include <delay.h>
#include <device/i2c_simple.h>
#include <string.h>
#include <soc/addressmap.h>
#include <stdint.h>
#include "i2c.h"

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Functions
static void	do_bus_clear (int bus)
static int	tegra_i2c_send_recv (int bus, int read, uint32_t *headers, int header_words, uint8_t *data, int data_len)
static int	tegra_i2c_request (int bus, unsigned int chip, int cont, int restart, int read, void *data, int data_len)
static int	i2c_transfer_segment (unsigned int bus, unsigned int chip, int restart, int read, void *buf, int len)
int	platform_i2c_transfer (unsigned int bus, struct i2c_msg *segments, int count)
void	i2c_init (unsigned int bus)

Function Documentation

do_bus_clear()

static void do_bus_clear ( int  bus )

static

Definition at line 13 of file i2c.c.

References BIOS_DEBUG, I2C_BUS_CLEAR_CONFIG_BC_ENABLE, I2C_BUS_CLEAR_CONFIG_BC_TERMINATE_IMMEDIATE, I2C_CONFIG_LOAD_MSTR_CONFIG_LOAD_ENABLE, info, printk, read32(), tegra_i2c_info, udelay(), and write32().

Referenced by tegra_i2c_send_recv().

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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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i2c_transfer_segment()

static int i2c_transfer_segment ( unsigned int  bus, unsigned int  chip, int  restart, int  read, void *  buf, int  len  )

static

Definition at line 160 of file i2c.c.

References buf, chip, IOHEADER_PAYLOADSIZE_MASK, IOHEADER_PAYLOADSIZE_SHIFT, MIN, and tegra_i2c_request().

Referenced by platform_i2c_transfer().

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platform_i2c_transfer()

int platform_i2c_transfer	(	unsigned int	bus,
		struct i2c_msg *	segments,
		int	count
	)

Definition at line 178 of file i2c.c.

References BIOS_ERR, i2c_msg::buf, count, i2c_msg::flags, I2C_M_RD, i2c_transfer_segment(), i2c_msg::len, num_i2c_buses, printk, and i2c_msg::slave.

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tegra_i2c_request()

static int tegra_i2c_request ( int  bus, unsigned int  chip, int  cont, int  restart, int  read, void *  data, int  data_len  )

static

Definition at line 128 of file i2c.c.

References ARRAY_SIZE, BIOS_ERR, chip, headers, IOHEADER_CONTROLLER_ID_SHIFT, IOHEADER_I2C_REQ_ADDR_MODE_7BIT, IOHEADER_I2C_REQ_CONTINUE_XFER, IOHEADER_I2C_REQ_READ, IOHEADER_I2C_REQ_REPEAT_START, IOHEADER_I2C_REQ_SLAVE_ADDR_SHIFT, IOHEADER_PAYLOADSIZE_SHIFT, IOHEADER_PKTID_SHIFT, IOHEADER_PKTTYPE_REQUEST, IOHEADER_PROTHDRSZ_SHIFT, IOHEADER_PROTOCOL_I2C, printk, and tegra_i2c_send_recv().

Referenced by i2c_transfer_segment().

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tegra_i2c_send_recv()

static int tegra_i2c_send_recv ( int  bus, int  read, uint32_t *  headers, int  header_words, uint8_t *  data, int  data_len  )

static

Definition at line 46 of file i2c.c.

References BIOS_ERR, do_bus_clear(), headers, I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_MASK, I2C_FIFO_STATUS_RX_FIFO_FULL_CNT_SHIFT, I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_MASK, I2C_FIFO_STATUS_TX_FIFO_EMPTY_CNT_SHIFT, i2c_init(), I2C_PKT_STATUS_ARB_LOST, I2C_PKT_STATUS_NOACK_ADDR, I2C_PKT_STATUS_NOACK_DATA, info, memcpy(), MIN, printk, read32(), tegra_i2c_regs::status, tegra_i2c_info, word, and write32().

Referenced by tegra_i2c_request().

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