diff options
Diffstat (limited to 'drivers/net/ethernet/asix/ax88796c_spi.h')
| -rw-r--r-- | drivers/net/ethernet/asix/ax88796c_spi.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/net/ethernet/asix/ax88796c_spi.h b/drivers/net/ethernet/asix/ax88796c_spi.h new file mode 100644 index 000000000..5bcf91f60 --- /dev/null +++ b/drivers/net/ethernet/asix/ax88796c_spi.h @@ -0,0 +1,69 @@ +/* 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 |