cadence_qspi.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2012
* Altera Corporation <www.altera.com>
*/
#ifndef __CADENCE_QSPI_H__
#define __CADENCE_QSPI_H__
#include <reset.h>
#define CQSPI_IS_ADDR(cmd_len) (cmd_len > 1 ? 1 : 0)
#define CQSPI_NO_DECODER_MAX_CS 4
#define CQSPI_DECODER_MAX_CS 16
#define CQSPI_READ_CAPTURE_MAX_DELAY 16
struct cadence_spi_platdata {
unsigned int ref_clk_hz;
unsigned int max_hz;
void *regbase;
void *ahbbase;
bool is_decoded_cs;
u32 fifo_depth;
u32 fifo_width;
u32 trigger_address;
fdt_addr_t ahbsize;
bool use_dac_mode;
/* Flash parameters */
u32 page_size;
u32 block_size;
u32 tshsl_ns;
u32 tsd2d_ns;
u32 tchsh_ns;
u32 tslch_ns;
};
struct cadence_spi_priv {
void *regbase;
void *ahbbase;
size_t cmd_len;
u8 cmd_buf[32];
size_t data_len;
int qspi_is_init;
unsigned int qspi_calibrated_hz;
unsigned int qspi_calibrated_cs;
unsigned int previous_hz;
struct reset_ctl_bulk resets;
};
/* Functions call declaration */
void cadence_qspi_apb_controller_init(struct cadence_spi_platdata *plat);
void cadence_qspi_apb_controller_enable(void *reg_base_addr);
void cadence_qspi_apb_controller_disable(void *reg_base_addr);
void cadence_qspi_apb_dac_mode_enable(void *reg_base);
int cadence_qspi_apb_command_read(void *reg_base_addr,
const struct spi_mem_op *op);
int cadence_qspi_apb_command_write(void *reg_base_addr,
const struct spi_mem_op *op);
int cadence_qspi_apb_read_setup(struct cadence_spi_platdata *plat,
const struct spi_mem_op *op);
int cadence_qspi_apb_read_execute(struct cadence_spi_platdata *plat,
const struct spi_mem_op *op);
int cadence_qspi_apb_write_setup(struct cadence_spi_platdata *plat,
const struct spi_mem_op *op);
int cadence_qspi_apb_write_execute(struct cadence_spi_platdata *plat,
const struct spi_mem_op *op);
void cadence_qspi_apb_chipselect(void *reg_base,
unsigned int chip_select, unsigned int decoder_enable);
void cadence_qspi_apb_set_clk_mode(void *reg_base, uint mode);
void cadence_qspi_apb_config_baudrate_div(void *reg_base,
unsigned int ref_clk_hz, unsigned int sclk_hz);
void cadence_qspi_apb_delay(void *reg_base,
unsigned int ref_clk, unsigned int sclk_hz,
unsigned int tshsl_ns, unsigned int tsd2d_ns,
unsigned int tchsh_ns, unsigned int tslch_ns);
void cadence_qspi_apb_enter_xip(void *reg_base, char xip_dummy);
void cadence_qspi_apb_readdata_capture(void *reg_base,
unsigned int bypass, unsigned int delay);
#endif /* __CADENCE_QSPI_H__ */