2 files changed, 32 insertions, 0 deletions

diff --git a/include/linux/i8042.h b/include/linux/i8042.h
index 7907a72403ee..60c3360ef6ad 100644
--- a/include/linux/i8042.h
+++ b/include/linux/i8042.h
@@ -7,6 +7,7 @@
  * the Free Software Foundation.
  */
 
+#include <linux/types.h>
 
 /*
  * Standard commands.
@@ -30,6 +31,35 @@
 #define I8042_CMD_MUX_PFX       0x0090
 #define I8042_CMD_MUX_SEND      0x1090
 
+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 *);
+
+#else
+
+void i8042_lock_chip(void)
+{
+}
+
+void i8042_unlock_chip(void)
+{
+}
+
+int i8042_command(unsigned char *param, int command)
+{
+        return -ENOSYS;
+}
+
+bool i8042_check_port_owner(const struct serio *serio)
+{
+        return false;
+}
+
+#endif
 
 #endif
diff --git a/include/linux/libps2.h b/include/linux/libps2.h
index fcf5fbe6a50c..79603a6c356f 100644
--- a/include/linux/libps2.h
+++ b/include/linux/libps2.h
@@ -44,6 +44,8 @@ struct ps2dev {
 void ps2_init(struct ps2dev *ps2dev, struct serio *serio);
 int ps2_sendbyte(struct ps2dev *ps2dev, unsigned char byte, int timeout);
 void ps2_drain(struct ps2dev *ps2dev, int maxbytes, int timeout);
+void ps2_begin_command(struct ps2dev *ps2dev);
+void ps2_end_command(struct ps2dev *ps2dev);
 int __ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
 int ps2_command(struct ps2dev *ps2dev, unsigned char *param, int command);
 int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data);