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-rw-r--r--qemu/include/hw/i2c/imx_i2c.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/qemu/include/hw/i2c/imx_i2c.h b/qemu/include/hw/i2c/imx_i2c.h
new file mode 100644
index 000000000..e2ee8eaee
--- /dev/null
+++ b/qemu/include/hw/i2c/imx_i2c.h
@@ -0,0 +1,87 @@
+/*
+ * i.MX I2C Bus Serial Interface registers definition
+ *
+ * Copyright (C) 2013 Jean-Christophe Dubois. <jcd@tribudubois.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __IMX_I2C_H_
+#define __IMX_I2C_H_
+
+#include <hw/sysbus.h>
+
+#define TYPE_IMX_I2C "imx.i2c"
+#define IMX_I2C(obj) OBJECT_CHECK(IMXI2CState, (obj), TYPE_IMX_I2C)
+
+#define IMX_I2C_MEM_SIZE 0x14
+
+/* i.MX I2C memory map */
+#define IADR_ADDR 0x00 /* address register */
+#define IFDR_ADDR 0x04 /* frequency divider register */
+#define I2CR_ADDR 0x08 /* control register */
+#define I2SR_ADDR 0x0c /* status register */
+#define I2DR_ADDR 0x10 /* data register */
+
+#define IADR_MASK 0xFE
+#define IADR_RESET 0
+
+#define IFDR_MASK 0x3F
+#define IFDR_RESET 0
+
+#define I2CR_IEN (1 << 7)
+#define I2CR_IIEN (1 << 6)
+#define I2CR_MSTA (1 << 5)
+#define I2CR_MTX (1 << 4)
+#define I2CR_TXAK (1 << 3)
+#define I2CR_RSTA (1 << 2)
+#define I2CR_MASK 0xFC
+#define I2CR_RESET 0
+
+#define I2SR_ICF (1 << 7)
+#define I2SR_IAAF (1 << 6)
+#define I2SR_IBB (1 << 5)
+#define I2SR_IAL (1 << 4)
+#define I2SR_SRW (1 << 2)
+#define I2SR_IIF (1 << 1)
+#define I2SR_RXAK (1 << 0)
+#define I2SR_MASK 0xE9
+#define I2SR_RESET 0x81
+
+#define I2DR_MASK 0xFF
+#define I2DR_RESET 0
+
+#define ADDR_RESET 0xFF00
+
+typedef struct IMXI2CState {
+ /*< private >*/
+ SysBusDevice parent_obj;
+
+ /*< public >*/
+ MemoryRegion iomem;
+ I2CBus *bus;
+ qemu_irq irq;
+
+ uint16_t address;
+
+ uint16_t iadr;
+ uint16_t ifdr;
+ uint16_t i2cr;
+ uint16_t i2sr;
+ uint16_t i2dr_read;
+ uint16_t i2dr_write;
+} IMXI2CState;
+
+#endif /* __IMX_I2C_H_ */