1 files changed, 75 insertions, 0 deletions
diff --git a/include/i8042.h b/include/i8042.h
new file mode 100644
index 0000000..8d69fa1
--- /dev/null
+++ b/include/i8042.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2002 ELTEC Elektronik AG
+ * Frank Gottschling <fgottschling@eltec.de>
+ */
+
+/* i8042.h - Intel 8042 keyboard driver header */
+
+#ifndef _I8042_H_
+#define _I8042_H_
+
+/* defines */
+
+#define I8042_DATA_REG	0x60	/* keyboard i/o buffer */
+#define I8042_STS_REG	0x64	/* keyboard status read */
+#define I8042_CMD_REG	0x64	/* keyboard ctrl write */
+
+/* Status register bit defines */
+#define STATUS_OBF	(1 << 0)
+#define STATUS_IBF	(1 << 1)
+
+/* Configuration byte bit defines */
+#define CONFIG_KIRQ_EN	(1 << 0)
+#define CONFIG_MIRQ_EN	(1 << 1)
+#define CONFIG_SET_BIST	(1 << 2)
+#define CONFIG_KCLK_DIS	(1 << 4)
+#define CONFIG_MCLK_DIS	(1 << 5)
+#define CONFIG_AT_TRANS	(1 << 6)
+
+/* i8042 commands */
+#define CMD_RD_CONFIG	0x20	/* read configuration byte */
+#define CMD_WR_CONFIG	0x60	/* write configuration byte */
+#define CMD_SELF_TEST	0xaa	/* controller self-test */
+#define CMD_KBD_DIS	0xad	/* keyboard disable */
+#define CMD_KBD_EN	0xae	/* keyboard enable */
+#define CMD_SET_KBD_LED	0xed	/* set keyboard led */
+#define CMD_DRAIN_OUTPUT 0xf4   /* drain output buffer */
+#define CMD_RESET_KBD	0xff	/* reset keyboard */
+
+/* i8042 command result */
+#define KBC_TEST_OK	0x55
+#define KBD_ACK		0xfa
+#define KBD_POR		0xaa
+
+/* keyboard scan codes */
+
+#define KBD_US		0	/* default US layout */
+#define KBD_GER		1	/* german layout */
+
+#define KBD_TIMEOUT	1000	/* 1 sec */
+#define KBD_RESET_TRIES	3
+
+#define AS		0	/* normal character index */
+#define SH		1	/* shift index */
+#define CN		2	/* control index */
+#define NM		3	/* numeric lock index */
+#define AK		4	/* right alt key */
+#define CP		5	/* capslock index */
+#define ST		6	/* stop output index */
+#define EX		7	/* extended code index */
+#define ES		8	/* escape and extended code index */
+
+#define NORMAL		0x0000	/* normal key */
+#define STP		0x0001	/* scroll lock stop output*/
+#define NUM		0x0002	/* numeric lock */
+#define CAPS		0x0004	/* capslock */
+#define SHIFT		0x0008	/* shift */
+#define CTRL		0x0010	/* control*/
+#define EXT		0x0020	/* extended scan code 0xe0 */
+#define ESC		0x0040	/* escape key press */
+#define E1		0x0080	/* extended scan code 0xe1 */
+#define BRK		0x0100	/* make break flag for keyboard */
+#define ALT		0x0200	/* right alt */
+
+#endif /* _I8042_H_ */