Input: i8042 - export i8042_command()

Export the i8042_command() function which manages the mutual
exclusion with the help of the i8042_lock spinlock. This allows
to access i8042 safely from other parts of the kernel.

Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

3 files changed, 38 insertions, 23 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 11dafc0ee994..1a0cea3c5294 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -20,6 +20,7 @@
 #include <linux/err.h>
 #include <linux/rcupdate.h>
 #include <linux/platform_device.h>
+#include <linux/i8042.h>
 
 #include <asm/io.h>
 
@@ -208,7 +209,7 @@ static int __i8042_command(unsigned char *param, int command)
         return 0;
 }
 
-static int i8042_command(unsigned char *param, int command)
+int i8042_command(unsigned char *param, int command)
 {
         unsigned long flags;
         int retval;
@@ -219,6 +220,7 @@ static int i8042_command(unsigned char *param, int command)
 
         return retval;
 }
+EXPORT_SYMBOL(i8042_command);
 
 /*
  * i8042_kbd_write() sends a byte out through the keyboard interface.
diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h
index b3eb7a72d961..dd22d91f8b39 100644
--- a/drivers/input/serio/i8042.h
+++ b/drivers/input/serio/i8042.h
@@ -61,28 +61,6 @@
 #define I8042_CTR_XLATE         0x40
 
 /*
- * 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
-
-/*
  * Return codes.
  */
 
diff --git a/include/linux/i8042.h b/include/linux/i8042.h
new file mode 100644
index 000000000000..7907a72403ee
--- /dev/null
+++ b/include/linux/i8042.h
@@ -0,0 +1,35 @@
+#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.
+ */
+
+
+/*
+ * 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
+
+int i8042_command(unsigned char *param, int command);
+
+#endif