1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-cortina.h b/drivers/i2c/i2c-cortina.h
new file mode 100644
index 0000000..7e406b5
--- /dev/null
+++ b/drivers/i2c/i2c-cortina.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2019
+ * Cortina Access, <www.cortina-access.com>
+ */
+
+#ifndef __CA_I2C_H_
+#define __CA_I2C_H_
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+
+#if !defined(__ASSEMBLER__) && !defined(__ASSEMBLY__)
+struct i2c_regs {
+	u32 i2c_cfg;
+	u32 i2c_ctrl;
+	u32 i2c_txr;
+	u32 i2c_rxr;
+	u32 i2c_ack;
+	u32 i2c_ie0;
+	u32 i2c_int0;
+	u32 i2c_ie1;
+	u32 i2c_int1;
+	u32 i2c_stat;
+};
+
+union ca_biw_cfg {
+	struct biw_cfg {
+		u32 core_en		: 1;
+		u32 biw_soft_reset	: 1;
+		u32 busywait_en		: 1;
+		u32 stretch_en		: 1;
+		u32 arb_en		: 1;
+		u32 clksync_en		: 1;
+		u32 rsrvd1		: 2;
+		u32 spike_cnt		: 4;
+		u32 rsrvd2		: 4;
+		u32 prer		: 16;
+	} bf;
+	unsigned int wrd;
+};
+
+union ca_biw_ctrl {
+	struct biw_ctrl {
+		u32 biwdone	: 1;
+		u32 rsrvd1	: 2;
+		u32 ack_in	: 1;
+		u32 write	: 1;
+		u32 read	: 1;
+		u32 stop	: 1;
+		u32 start	: 1;
+		u32 rsrvd2	: 24;
+	} bf;
+	unsigned int wrd;
+};
+
+union ca_biw_ack {
+	struct biw_ack {
+		u32 al		:1;
+		u32 biw_busy	:1;
+		u32 ack_out	:1;
+		u32 rsrvd1	:29;
+	} bf;
+	unsigned int wrd;
+};
+#endif /* !__ASSEMBLER__*/
+
+struct ca_i2c {
+	struct i2c_regs *regs;
+	unsigned int speed;
+};
+
+#define I2C_CMD_WT			0
+#define I2C_CMD_RD			1
+
+#define BIW_CTRL_DONE		BIT(0)
+#define BIW_CTRL_ACK_IN		BIT(3)
+#define BIW_CTRL_WRITE		BIT(4)
+#define BIW_CTRL_READ		BIT(5)
+#define BIW_CTRL_STOP		BIT(6)
+#define BIW_CTRL_START		BIT(7)
+
+#define I2C_BYTE_TO		(CONFIG_SYS_HZ / 500)
+#define I2C_STOPDET_TO		(CONFIG_SYS_HZ / 500)
+#define I2C_BYTE_TO_BB		(10)
+
+#endif							/* __CA_I2C_H_ */