| /* 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 |
