* (C) Copyright 2002 ELTEC Elektronik AG
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
/* i8042.h - Intel 8042 keyboard driver header */
#ifndef _I8042_H_
#define _I8042_H_
-#ifdef __I386__
-#include <common.h>
-#include <asm/io.h>
-#define in8(p) inb(p)
-#define out8(p,v) outb(v,p)
-#endif
-
/* defines */
-#define I8042_DATA_REG (CONFIG_SYS_ISA_IO + 0x0060) /* keyboard i/o buffer */
-#define I8042_STATUS_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard status read */
-#define I8042_COMMAND_REG (CONFIG_SYS_ISA_IO + 0x0064) /* keyboard ctrl write */
-
-#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 */
+#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 */
/* exports */
-int i8042_kbd_init(void);
-int i8042_tstc(void);
-int i8042_getc(void);
+/**
+ * Flush all buffer from keyboard controller to host.
+ */
+void i8042_flush(void);
+
+/**
+ * Disables the keyboard so that key strokes no longer generate scancodes to
+ * the host.
+ *
+ * @return 0 if ok, -1 if keyboard input was found while disabling
+ */
+int i8042_disable(void);
#endif /* _I8042_H_ */
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