1 files changed, 136 insertions, 0 deletions

diff --git a/drivers/input/serio/i8042-ppcio.h b/drivers/input/serio/i8042-ppcio.h
new file mode 100644
index 000000000000..2906e1b60c04
--- /dev/null
+++ b/drivers/input/serio/i8042-ppcio.h
@@ -0,0 +1,136 @@
+#ifndef _I8042_PPCIO_H
+#define _I8042_PPCIO_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.
+ */
+
+#if defined(CONFIG_WALNUT)
+
+#define I8042_KBD_IRQ 25
+#define I8042_AUX_IRQ 26
+
+#define I8042_KBD_PHYS_DESC "walnutps2/serio0"
+#define I8042_AUX_PHYS_DESC "walnutps2/serio1"
+#define I8042_MUX_PHYS_DESC "walnutps2/serio%d"
+
+extern void *kb_cs;
+extern void *kb_data;
+
+#define I8042_COMMAND_REG (*(int *)kb_cs)
+#define I8042_DATA_REG (*(int *)kb_data)
+
+static inline int i8042_read_data(void)
+{
+        return readb(kb_data);
+}
+
+static inline int i8042_read_status(void)
+{
+        return readb(kb_cs);
+}
+
+static inline void i8042_write_data(int val)
+{
+        writeb(val, kb_data);
+}
+
+static inline void i8042_write_command(int val)
+{
+        writeb(val, kb_cs);
+}
+
+static inline int i8042_platform_init(void)
+{
+        i8042_reset = 1;
+        return 0;
+}
+
+static inline void i8042_platform_exit(void)
+{
+}
+
+#elif defined(CONFIG_SPRUCE)
+
+#define I8042_KBD_IRQ 22
+#define I8042_AUX_IRQ 21
+
+#define I8042_KBD_PHYS_DESC "spruceps2/serio0"
+#define I8042_AUX_PHYS_DESC "spruceps2/serio1"
+#define I8042_MUX_PHYS_DESC "spruceps2/serio%d"
+
+#define I8042_COMMAND_REG 0xff810000
+#define I8042_DATA_REG 0xff810001
+
+static inline int i8042_read_data(void)
+{
+        unsigned long kbd_data;
+
+        __raw_writel(0x00000088, 0xff500008);
+        eieio();
+
+        __raw_writel(0x03000000, 0xff50000c);
+        eieio();
+
+        asm volatile("lis     7,0xff88        \n\
+                      lswi    6,7,0x8         \n\
+                      mr      %0,6"
+                      : "=r" (kbd_data) :: "6", "7");
+
+        __raw_writel(0x00000000, 0xff50000c);
+        eieio();
+
+        return (unsigned char)(kbd_data >> 24);
+}
+
+static inline int i8042_read_status(void)
+{
+        unsigned long kbd_status;
+
+        __raw_writel(0x00000088, 0xff500008);
+        eieio();
+
+        __raw_writel(0x03000000, 0xff50000c);
+        eieio();
+
+        asm volatile("lis     7,0xff88        \n\
+                      ori     7,7,0x8         \n\
+                      lswi    6,7,0x8         \n\
+                      mr      %0,6"
+                      : "=r" (kbd_status) :: "6", "7");
+
+        __raw_writel(0x00000000, 0xff50000c);
+        eieio();
+
+        return (unsigned char)(kbd_status >> 24);
+}
+
+static inline void i8042_write_data(int val)
+{
+        *((unsigned char *)0xff810000) = (char)val;
+}
+
+static inline void i8042_write_command(int val)
+{
+        *((unsigned char *)0xff810001) = (char)val;
+}
+
+static inline int i8042_platform_init(void)
+{
+        i8042_reset = 1;
+        return 0;
+}
+
+static inline void i8042_platform_exit(void)
+{
+}
+
+#else
+
+#include "i8042-io.h"
+
+#endif
+
+#endif /* _I8042_PPCIO_H */