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/*
* This file is part of the depthcharge project.
*
* Copyright (C) 2014 The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __QUP_H__
#define __QUP_H__
#include "ipq806x_gsbi.h"
/* QUP block registers */
#define QUP_CONFIG 0x0
#define QUP_STATE 0x4
#define QUP_IO_MODES 0x8
#define QUP_SW_RESET 0xc
#define QUP_TIME_OUT 0x10
#define QUP_TIME_OUT_CURRENT 0x14
#define QUP_OPERATIONAL 0x18
#define QUP_ERROR_FLAGS 0x1c
#define QUP_ERROR_FLAGS_EN 0x20
#define QUP_TEST_CTRL 0x24
#define QUP_MX_OUTPUT_COUNT 0x100
#define QUP_MX_OUTPUT_CNT_CURRENT 0x104
#define QUP_OUTPUT_DEBUG 0x108
#define QUP_OUTPUT_FIFO_WORD_CNT 0x10c
#define QUP_OUTPUT_FIFO 0x110
#define QUP_MX_WRITE_COUNT 0x150
#define QUP_WRITE_CNT_CURRENT 0x154
#define QUP_MX_INPUT_COUNT 0x200
#define QUP_READ_COUNT 0x208
#define QUP_MX_READ_CNT_CURRENT 0x20c
#define QUP_INPUT_DEBUG 0x210
#define QUP_INPUT_FIFO_WORD_CNT 0x214
#define QUP_INPUT_FIFO 0x218
#define QUP_I2C_MASTER_CLK_CTL 0x400
#define QUP_I2C_MASTER_STATUS 0x404
#define OUTPUT_FIFO_FULL (1<<6)
#define INPUT_FIFO_NOT_EMPTY (1<<5)
#define OUTPUT_FIFO_NOT_EMPTY (1<<4)
#define INPUT_SERVICE_FLAG (1<<9)
#define OUTPUT_SERVICE_FLAG (1<<8)
#define QUP_OUTPUT_BIT_SHIFT_EN (1<<16)
#define QUP_MODE_MASK (0x03)
#define QUP_OUTPUT_MODE_SHFT (10)
#define QUP_INPUT_MODE_SHFT (12)
#define QUP_FS_DIVIDER_MASK (0xFF)
#define QUP_MINI_CORE_PROTO_SHFT (8)
#define QUP_MINI_CORE_PROTO_MASK (0x0F)
/* Mini-core states */
#define QUP_STATE_RESET 0x0
#define QUP_STATE_RUN 0x1
#define QUP_STATE_PAUSE 0x3
#define QUP_STATE_VALID (1<<2)
#define QUP_STATE_MASK 0x3
#define QUP_STATE_VALID_MASK (1<<2)
/* Tags for output FIFO */
#define QUP_I2C_1CLK_NOOP_SEQ 0x1 /*MSB 8-bit NOP, LSB 8-bits 1 clk.*/
#define QUP_I2C_START_SEQ (0x1 << 8)
#define QUP_I2C_DATA_SEQ (0x2 << 8)
#define QUP_I2C_STOP_SEQ (0x3 << 8)
#define QUP_I2C_RECV_SEQ (0x4 << 8)
/* Tags for input FIFO */
#define QUP_I2C_MIDATA_SEQ (0x5 << 8)
#define QUP_I2C_MISTOP_SEQ (0x6 << 8)
#define QUP_I2C_MINACK_SEQ (0x7 << 8)
#define QUP_I2C_ADDR(x) ((x & 0xFF) << 1)
#define QUP_I2C_DATA(x) (x & 0xFF)
#define QUP_I2C_MI_TAG(x) (x & 0xFF00)
#define QUP_I2C_SLAVE_READ (0x1)
/*Bit vals for I2C_MASTER_CLK_CTL register */
#define QUP_HS_DIVIDER_SHFT (8)
#define QUP_DIVIDER_MIN_VAL (0x3)
/* Bit masks for I2C_MASTER_STATUS register */
#define QUP_I2C_INVALID_READ_SEQ (1 << 25)
#define QUP_I2C_INVALID_READ_ADDR (1 << 24)
#define QUP_I2C_INVALID_TAG (1 << 23)
#define QUP_I2C_FAILED_MASK (0x3 << 6)
#define QUP_I2C_ARB_LOST (1 << 4)
#define QUP_I2C_BUS_ERROR (1 << 2)
typedef enum {
QUP_SUCCESS = 0,
QUP_ERR_BAD_PARAM,
QUP_ERR_STATE_SET,
QUP_ERR_TIMEOUT,
QUP_ERR_UNSUPPORTED,
QUP_ERR_I2C_INVALID_SLAVE_ADDR,
QUP_ERR_XFER_FAIL,
QUP_ERR_UNDEFINED,
} qup_return_t;
typedef enum {
QUP_MINICORE_SPI = 1,
QUP_MINICORE_I2C_MASTER,
QUP_MINICORE_I2C_SLAVE
} qup_protocol_t;
typedef enum {
QUP_MODE_FIFO = 0,
QUP_MODE_BLOCK,
QUP_MODE_DATAMOVER,
} qup_mode_t;
typedef struct {
qup_protocol_t protocol;
unsigned clk_frequency;
unsigned src_frequency;
qup_mode_t mode;
} qup_config_t;
typedef struct {
qup_protocol_t protocol;
union {
struct {
uint8_t addr;
uint8_t *data;
unsigned data_len;
} iic;
struct {
void *in;
void *out;
unsigned size;
} spi;
} p;
} qup_data_t;
/*
* Initialize GSBI QUP block for FIFO I2C transfers.
* gsbi_id[IN]: GSBI for which QUP is to be initialized.
* config_ptr[IN]: configurations parameters for the QUP.
*
* return: QUP_SUCCESS, if initialization succeeds.
*/
qup_return_t qup_init(gsbi_id_t gsbi_id, qup_config_t *config_ptr);
/*
* Set QUP state to run, pause, reset.
* gsbi_id[IN]: GSBI block for which QUP state is to be set.
* state[IN]: New state to transition to.
*
* return: QUP_SUCCESS, if state transition succeeds.
*/
qup_return_t qup_set_state(gsbi_id_t gsbi_id, uint32_t state);
/*
* Reset the status bits set during an i2c transfer.
* gsbi_id[IN]: GSBI block for which i2c status bits are to be cleared.
*
* return: QUP_SUCCESS, if status bits are cleared successfully.
*/
qup_return_t qup_reset_i2c_master_status(gsbi_id_t gsbi_id);
/*
* Send data to the peripheral on the bus.
* gsbi_id[IN]: GSBI block for which data is to be sent.
* p_tx_obj[IN]: Data to be sent to the slave on the bus.
* stop_seq[IN]: When set to non-zero QUP engine sends i2c stop sequnce.
*
* return: QUP_SUCCESS, when data is sent successfully to the peripheral.
*/
qup_return_t qup_send_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj,
uint8_t stop_seq);
/*
* Receive data from peripheral on the bus.
* gsbi_id[IN]: GSBI block from which data is to be received.
* p_tx_obj[IN]: length of data to be received, slave address.
* [OUT]: buffer filled with data from slave.
*
* return: QUP_SUCCESS, when data is received successfully.
*/
qup_return_t qup_recv_data(gsbi_id_t gsbi_id, qup_data_t *p_tx_obj);
#endif //__QUP_H__
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