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-rw-r--r--include/linux/i8042.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/i8042.h b/include/linux/i8042.h
index 7907a72403e..60c3360ef6a 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