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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2010 ASIX Electronics Corporation
* Copyright (c) 2020 Samsung Electronics Co., Ltd.
*
* ASIX AX88796C SPI Fast Ethernet Linux driver
*/
#ifndef _AX88796C_SPI_H
#define _AX88796C_SPI_H
#include <linux/spi/spi.h>
#include <linux/types.h>
/* Definition of SPI command */
#define AX_SPICMD_WRITE_TXQ 0x02
#define AX_SPICMD_READ_REG 0x03
#define AX_SPICMD_READ_STATUS 0x05
#define AX_SPICMD_READ_RXQ 0x0B
#define AX_SPICMD_BIDIR_WRQ 0xB2
#define AX_SPICMD_WRITE_REG 0xD8
#define AX_SPICMD_EXIT_PWD 0xAB
extern const u8 ax88796c_rx_cmd_buf[];
extern const u8 ax88796c_tx_cmd_buf[];
struct axspi_data {
struct spi_device *spi;
struct spi_message rx_msg;
struct spi_transfer spi_rx_xfer[2];
u8 cmd_buf[6];
u8 rx_buf[6];
u8 comp;
};
struct spi_status {
u16 isr;
u8 status;
# define AX_STATUS_READY 0x80
};
int axspi_read_rxq(struct axspi_data *ax_spi, void *data, int len);
int axspi_write_txq(const struct axspi_data *ax_spi, void *data, int len);
u16 axspi_read_reg(struct axspi_data *ax_spi, u8 reg);
int axspi_write_reg(struct axspi_data *ax_spi, u8 reg, u16 value);
int axspi_read_status(struct axspi_data *ax_spi, struct spi_status *status);
int axspi_wakeup(struct axspi_data *ax_spi);
static inline u16 AX_READ(struct axspi_data *ax_spi, u8 offset)
{
return axspi_read_reg(ax_spi, offset);
}
static inline int AX_WRITE(struct axspi_data *ax_spi, u16 value, u8 offset)
{
return axspi_write_reg(ax_spi, offset, value);
}
static inline int AX_READ_STATUS(struct axspi_data *ax_spi,
struct spi_status *status)
{
return axspi_read_status(ax_spi, status);
}
static inline int AX_WAKEUP(struct axspi_data *ax_spi)
{
return axspi_wakeup(ax_spi);
}
#endif
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