summaryrefslogtreecommitdiff
path: root/include/linux/i8042.h
diff options
context:
space:
mode:
authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /include/linux/i8042.h
Initial import
Diffstat (limited to 'include/linux/i8042.h')
-rw-r--r--include/linux/i8042.h105
1 files changed, 105 insertions, 0 deletions
diff --git a/include/linux/i8042.h b/include/linux/i8042.h
new file mode 100644
index 000000000..0f9bafa17
--- /dev/null
+++ b/include/linux/i8042.h
@@ -0,0 +1,105 @@
+#ifndef _LINUX_I8042_H
+#define _LINUX_I8042_H
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+
+/*
+ * Standard commands.
+ */
+
+#define I8042_CMD_CTL_RCTR 0x0120
+#define I8042_CMD_CTL_WCTR 0x1060
+#define I8042_CMD_CTL_TEST 0x01aa
+
+#define I8042_CMD_KBD_DISABLE 0x00ad
+#define I8042_CMD_KBD_ENABLE 0x00ae
+#define I8042_CMD_KBD_TEST 0x01ab
+#define I8042_CMD_KBD_LOOP 0x11d2
+
+#define I8042_CMD_AUX_DISABLE 0x00a7
+#define I8042_CMD_AUX_ENABLE 0x00a8
+#define I8042_CMD_AUX_TEST 0x01a9
+#define I8042_CMD_AUX_SEND 0x10d4
+#define I8042_CMD_AUX_LOOP 0x11d3
+
+#define I8042_CMD_MUX_PFX 0x0090
+#define I8042_CMD_MUX_SEND 0x1090
+
+/*
+ * Status register bits.
+ */
+
+#define I8042_STR_PARITY 0x80
+#define I8042_STR_TIMEOUT 0x40
+#define I8042_STR_AUXDATA 0x20
+#define I8042_STR_KEYLOCK 0x10
+#define I8042_STR_CMDDAT 0x08
+#define I8042_STR_MUXERR 0x04
+#define I8042_STR_IBF 0x02
+#define I8042_STR_OBF 0x01
+
+/*
+ * Control register bits.
+ */
+
+#define I8042_CTR_KBDINT 0x01
+#define I8042_CTR_AUXINT 0x02
+#define I8042_CTR_IGNKEYLOCK 0x08
+#define I8042_CTR_KBDDIS 0x10
+#define I8042_CTR_AUXDIS 0x20
+#define I8042_CTR_XLATE 0x40
+
+struct serio;
+
+#if defined(CONFIG_SERIO_I8042) || defined(CONFIG_SERIO_I8042_MODULE)
+
+void i8042_lock_chip(void);
+void i8042_unlock_chip(void);
+int i8042_command(unsigned char *param, int command);
+bool i8042_check_port_owner(const struct serio *);
+int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio));
+int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio));
+
+#else
+
+static inline void i8042_lock_chip(void)
+{
+}
+
+static inline void i8042_unlock_chip(void)
+{
+}
+
+static inline int i8042_command(unsigned char *param, int command)
+{
+ return -ENODEV;
+}
+
+static inline bool i8042_check_port_owner(const struct serio *serio)
+{
+ return false;
+}
+
+static inline int i8042_install_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio))
+{
+ return -ENODEV;
+}
+
+static inline int i8042_remove_filter(bool (*filter)(unsigned char data, unsigned char str,
+ struct serio *serio))
+{
+ return -ENODEV;
+}
+
+#endif
+
+#endif