coreboot: src/soc/qualcomm/ipq40xx/qup.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 <console/console.h>
#include <delay.h>
#include <timer.h>
#include <soc/iomap.h>
#include <soc/qup.h>

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Macros
#define	TIMEOUT_CNT 100

#define	QUP_ADDR(id, reg) (blsp_qup_base(id) + (reg))

#define	QUP_DEBUG 0

#define	QUPDBG BIOS_ERR, "\t-> "

#define	qup_write32 write32

Functions
static qup_return_t	qup_i2c_master_status (blsp_qup_id_t id)

static int	check_bit_state (uint32_t *reg, int wait_for)

static qup_return_t	qup_wait_for_state (blsp_qup_id_t id, unsigned int wait_for)

qup_return_t	qup_reset_i2c_master_status (blsp_qup_id_t id)

static qup_return_t	qup_reset_master_status (blsp_qup_id_t id)

static qup_return_t	qup_fifo_wait_for (blsp_qup_id_t id, uint32_t status, struct stopwatch *timeout)

static qup_return_t	qup_fifo_wait_while (blsp_qup_id_t id, uint32_t status, struct stopwatch *timeout)

static uint32_t	qup_i2c_create_output_tag (int stop, u8 data)

static qup_return_t	qup_i2c_write_fifo_flush (blsp_qup_id_t id, struct stopwatch *timeout)

static qup_return_t	qup_i2c_write_fifo (blsp_qup_id_t id, qup_data_t *p_tx_obj, uint8_t stop_seq)

static qup_return_t	qup_i2c_write (blsp_qup_id_t id, uint8_t mode, qup_data_t *p_tx_obj, uint8_t stop_seq)

static int	qup_i2c_parse_tag (uint32_t data, uint8_t *data_ptr, uint32_t len)

static qup_return_t	qup_i2c_read_fifo (blsp_qup_id_t id, qup_data_t *p_tx_obj)

static qup_return_t	qup_i2c_read (blsp_qup_id_t id, uint8_t mode, qup_data_t *p_tx_obj)

qup_return_t	qup_init (blsp_qup_id_t id, const qup_config_t *config_ptr)

qup_return_t	qup_set_state (blsp_qup_id_t id, uint32_t state)

static qup_return_t	qup_i2c_send_data (blsp_qup_id_t id, qup_data_t *p_tx_obj, uint8_t stop_seq)

qup_return_t	qup_send_data (blsp_qup_id_t id, qup_data_t *p_tx_obj, uint8_t stop_seq)

static qup_return_t	qup_i2c_recv_data (blsp_qup_id_t id, qup_data_t *p_rx_obj)

qup_return_t	qup_recv_data (blsp_qup_id_t id, qup_data_t *p_rx_obj)

Macro Definition Documentation

◆ QUP_ADDR

#define QUP_ADDR	(		id,
			reg
	)		(blsp_qup_base(id) + (reg))

Definition at line 12 of file qup.c.

◆ QUP_DEBUG

#define QUP_DEBUG 0

Definition at line 14 of file qup.c.

◆ qup_write32

#define qup_write32 write32

Definition at line 25 of file qup.c.

◆ QUPDBG

#define QUPDBG BIOS_ERR, "\t-> "

Definition at line 16 of file qup.c.

◆ TIMEOUT_CNT

#define TIMEOUT_CNT 100

Definition at line 10 of file qup.c.

Function Documentation

◆ check_bit_state()

static int check_bit_state	(	uint32_t *	reg,
		int	wait_for
	)

static

Definition at line 57 of file qup.c.

References count, QUP_ERR_TIMEOUT, QUP_STATE_MASK, QUP_STATE_VALID, QUP_STATE_VALID_MASK, QUP_SUCCESS, read32(), and TIMEOUT_CNT.

Referenced by qup_wait_for_state().

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◆ qup_fifo_wait_for()

static qup_return_t qup_fifo_wait_for	(	blsp_qup_id_t	id,
		uint32_t	status,
		struct stopwatch *	timeout
	)

static

Definition at line 97 of file qup.c.

References QUP_ADDR, QUP_ERR_TIMEOUT, QUP_ERR_UNDEFINED, qup_i2c_master_status(), QUP_OPERATIONAL, QUP_SUCCESS, read32(), and stopwatch_expired().

Referenced by qup_i2c_read_fifo().

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◆ qup_fifo_wait_while()

static qup_return_t qup_fifo_wait_while	(	blsp_qup_id_t	id,
		uint32_t	status,
		struct stopwatch *	timeout
	)

static

Definition at line 113 of file qup.c.

References QUP_ADDR, QUP_ERR_TIMEOUT, QUP_ERR_UNDEFINED, qup_i2c_master_status(), QUP_OPERATIONAL, QUP_SUCCESS, read32(), and stopwatch_expired().

Referenced by qup_i2c_write_fifo_flush().

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◆ qup_i2c_create_output_tag()

static uint32_t qup_i2c_create_output_tag	(	int	stop,
		u8	data
	)

inlinestatic

Definition at line 129 of file qup.c.

References QUP_I2C_DATA, QUP_I2C_DATA_SEQ, and QUP_I2C_STOP_SEQ.

Referenced by qup_i2c_write_fifo().

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◆ qup_i2c_master_status()

static qup_return_t qup_i2c_master_status ( blsp_qup_id_t id )

static

Definition at line 28 of file qup.c.

References printk, QUP_ADDR, QUP_ERR_I2C_ARB_LOST, QUP_ERR_I2C_BUS_ERROR, QUP_ERR_I2C_FAILED, QUP_ERR_I2C_INVALID_SLAVE_ADDR, QUP_ERR_I2C_INVALID_TAG, QUP_ERR_I2C_INVALID_WRITE, QUP_ERR_I2C_NACK, QUP_ERR_XFER_FAIL, QUP_ERROR_FLAGS, QUP_I2C_ARB_LOST, QUP_I2C_BUS_ERROR, QUP_I2C_FAILED_MASK, QUP_I2C_INVALID_READ_ADDR, QUP_I2C_INVALID_TAG, QUP_I2C_INVALID_WRITE, QUP_I2C_MASTER_STATUS, QUP_I2C_PACKET_NACK, QUP_SUCCESS, QUPDBG, and read32().

Referenced by qup_fifo_wait_for(), qup_fifo_wait_while(), and qup_i2c_write_fifo_flush().

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◆ qup_i2c_parse_tag()

static int qup_i2c_parse_tag	(	uint32_t	data,
		uint8_t *	data_ptr,
		uint32_t	len
	)

static

Definition at line 255 of file qup.c.

References printk, QUP_I2C_DATA, QUP_I2C_MI_TAG, QUP_I2C_MIDATA_SEQ, QUP_I2C_MISTOP_SEQ, and QUPDBG.

Referenced by qup_i2c_read_fifo().

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◆ qup_i2c_read()

static qup_return_t qup_i2c_read	(	blsp_qup_id_t	id,
		uint8_t	mode,
		qup_data_t *	p_tx_obj
	)

static

Definition at line 356 of file qup.c.

References printk, QUP_ERR_UNDEFINED, QUP_ERR_UNSUPPORTED, qup_i2c_read_fifo(), QUP_MODE_BLOCK, QUP_MODE_FIFO, qup_set_state(), QUP_STATE_RESET, and QUPDBG.

Referenced by qup_i2c_recv_data().

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◆ qup_i2c_read_fifo()

static qup_return_t qup_i2c_read_fifo	(	blsp_qup_id_t	id,
		qup_data_t *	p_tx_obj
	)

static

Definition at line 282 of file qup.c.

References addr, count, qup_data_t::iic, INPUT_SERVICE_FLAG, mdelay(), qup_data_t::p, printk, QUP_ADDR, QUP_ERR_I2C_INVALID_TAG, QUP_ERR_UNDEFINED, qup_fifo_wait_for(), QUP_I2C_ADDR, qup_i2c_parse_tag(), QUP_I2C_RECV_SEQ, QUP_I2C_SLAVE_READ, QUP_I2C_START_SEQ, qup_i2c_write_fifo_flush(), QUP_INPUT_FIFO, QUP_INPUT_MODE_SHFT, QUP_IO_MODES, QUP_MODE_BLOCK, QUP_MODE_MASK, QUP_MX_INPUT_COUNT, QUP_MX_READ_COUNT, QUP_OPERATIONAL, QUP_OUTPUT_FIFO, QUP_OUTPUT_MODE_SHFT, QUP_PACK_EN, qup_reset_master_status(), qup_set_state(), QUP_STATE_PAUSE, QUP_STATE_RESET, QUP_STATE_RUN, QUP_SUCCESS, QUP_UNPACK_EN, qup_write32, QUPDBG, read32(), and stopwatch_init_usecs_expire().

Referenced by qup_i2c_read().

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◆ qup_i2c_recv_data()

static qup_return_t qup_i2c_recv_data	(	blsp_qup_id_t	id,
		qup_data_t *	p_rx_obj
	)

static

Definition at line 513 of file qup.c.

References BIOS_DEBUG, qup_data_t::iic, qup_data_t::p, printk, QUP_ADDR, QUP_DEBUG, QUP_ERR_UNDEFINED, qup_i2c_read(), QUP_INPUT_MODE_SHFT, QUP_IO_MODES, QUP_MODE_MASK, and read32().

Referenced by qup_recv_data().

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◆ qup_i2c_send_data()

static qup_return_t qup_i2c_send_data	(	blsp_qup_id_t	id,
		qup_data_t *	p_tx_obj,
		uint8_t	stop_seq
	)

static

Definition at line 473 of file qup.c.

References BIOS_DEBUG, qup_data_t::iic, qup_data_t::p, printk, QUP_ADDR, QUP_DEBUG, QUP_ERR_UNDEFINED, qup_i2c_write(), QUP_IO_MODES, QUP_MODE_MASK, QUP_OUTPUT_MODE_SHFT, and read32().

Referenced by qup_send_data().

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◆ qup_i2c_write()

static qup_return_t qup_i2c_write	(	blsp_qup_id_t	id,
		uint8_t	mode,
		qup_data_t *	p_tx_obj,
		uint8_t	stop_seq
	)

static

Definition at line 233 of file qup.c.

References printk, QUP_ERR_UNDEFINED, QUP_ERR_UNSUPPORTED, qup_i2c_write_fifo(), QUP_MODE_BLOCK, QUP_MODE_FIFO, qup_set_state(), QUP_STATE_RESET, and QUPDBG.

Referenced by qup_i2c_send_data().

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◆ qup_i2c_write_fifo()

static qup_return_t qup_i2c_write_fifo	(	blsp_qup_id_t	id,
		qup_data_t *	p_tx_obj,
		uint8_t	stop_seq
	)

static

Definition at line 162 of file qup.c.

References addr, qup_data_t::iic, qup_data_t::p, printk, QUP_ADDR, QUP_ERR_UNDEFINED, QUP_I2C_ADDR, qup_i2c_create_output_tag(), QUP_I2C_START_SEQ, qup_i2c_write_fifo_flush(), QUP_MX_OUTPUT_COUNT, QUP_OUTPUT_FIFO, qup_reset_master_status(), qup_set_state(), QUP_STATE_RESET, QUP_STATE_RUN, qup_write32, QUPDBG, and stopwatch_init_usecs_expire().

Referenced by qup_i2c_write().

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◆ qup_i2c_write_fifo_flush()

static qup_return_t qup_i2c_write_fifo_flush	(	blsp_qup_id_t	id,
		struct stopwatch *	timeout
	)

inlinestatic

Definition at line 141 of file qup.c.

References BIOS_DEBUG, mdelay(), OUTPUT_FIFO_NOT_EMPTY, OUTPUT_SERVICE_FLAG, printk, QUP_ADDR, QUP_ERR_UNDEFINED, qup_fifo_wait_while(), qup_i2c_master_status(), QUP_OPERATIONAL, and qup_write32.

Referenced by qup_i2c_read_fifo(), and qup_i2c_write_fifo().

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◆ qup_init()

qup_return_t qup_init	(	blsp_qup_id_t	id,
		const qup_config_t *	config_ptr
	)

Definition at line 380 of file qup.c.

◆ qup_recv_data()

qup_return_t qup_recv_data	(	blsp_qup_id_t	id,
		qup_data_t *	p_rx_obj
	)

Definition at line 533 of file qup.c.

◆ qup_reset_i2c_master_status()

qup_return_t qup_reset_i2c_master_status ( blsp_qup_id_t id )

Definition at line 79 of file qup.c.

Referenced by qup_reset_master_status().

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◆ qup_reset_master_status()

static qup_return_t qup_reset_master_status ( blsp_qup_id_t id )

static

Definition at line 89 of file qup.c.

References QUP_ADDR, QUP_ERROR_FLAGS, QUP_ERROR_FLAGS_EN, qup_reset_i2c_master_status(), QUP_SUCCESS, and qup_write32.

Referenced by qup_i2c_read_fifo(), and qup_i2c_write_fifo().

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◆ qup_send_data()

qup_return_t qup_send_data	(	blsp_qup_id_t	id,
		qup_data_t *	p_tx_obj,
		uint8_t	stop_seq
	)

Definition at line 494 of file qup.c.

◆ qup_set_state()

qup_return_t qup_set_state	(	blsp_qup_id_t	id,
		uint32_t	state
	)

Definition at line 450 of file qup.c.

Referenced by qup_i2c_read(), qup_i2c_read_fifo(), qup_i2c_write(), qup_i2c_write_fifo(), and qup_init().

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◆ qup_wait_for_state()

static qup_return_t qup_wait_for_state	(	blsp_qup_id_t	id,
		unsigned int	wait_for
	)

static

Definition at line 74 of file qup.c.

References check_bit_state(), QUP_ADDR, and QUP_STATE.

Referenced by qup_init(), and qup_set_state().

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src
soc
qualcomm
ipq40xx
qup.c
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