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 000000000000..5bcf91f603fb
--- /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