This patch implements i8042 driver for unicore32 architecture.
Signed-off-by: Guan Xuetao <gxt@xxxxxxxxxxxxxxx>
---
drivers/input/serio/i8042.h | 2 +
drivers/staging/puv3/i8042-ucio.h | 89 +++++++++++++++++++++++++++++++++++++
2 files changed, 91 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/puv3/i8042-ucio.h
diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h
index cbc1beb..711b41c 100644
--- a/drivers/input/serio/i8042.h
+++ b/drivers/input/serio/i8042.h
@@ -26,6 +26,8 @@
#include "i8042-sparcio.h"
#elif defined(CONFIG_X86) || defined(CONFIG_IA64)
#include "i8042-x86ia64io.h"
+#elif defined(CONFIG_UNICORE32)
+#include "../../staging/puv3/i8042-ucio.h"
#else
#include "i8042-io.h"
#endif
diff --git a/drivers/staging/puv3/i8042-ucio.h b/drivers/staging/puv3/i8042-ucio.h
new file mode 100644
index 0000000..c3221df
--- /dev/null
+++ b/drivers/staging/puv3/i8042-ucio.h
@@ -0,0 +1,89 @@
+/*
+ * linux/drivers/staging/puv3/i8042-ucio.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Maintained by GUAN Xue-tao <gxt@xxxxxxxxxxxxxxx>
+ * Copyright (C) 2001-2010 Guan Xuetao
+ *
+ * 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.
+ */
+#ifndef _I8042_UCIO_H
+#define _I8042_UCIO_H
+
+#include <linux/clk.h>
+#include <mach/hardware.h>
+
+/*
+ * Names.
+ */
+
+#define I8042_KBD_PHYS_DESC "isa0060/serio0"
+#define I8042_AUX_PHYS_DESC "isa0060/serio1"
+#define I8042_MUX_PHYS_DESC "isa0060/serio%d"
+
+/*
+ * IRQs.
+ */
+#define I8042_KBD_IRQ IRQ_PS2_KBD
+#define I8042_AUX_IRQ IRQ_PS2_AUX
+
+/*
+ * Register numbers.
+ */
+
+#define I8042_COMMAND_REG ((unsigned long)&PS2_COMMAND)
+#define I8042_STATUS_REG ((unsigned long)&PS2_STATUS)
+#define I8042_DATA_REG ((unsigned long)&PS2_DATA)
+
+void puv3_ps2_init(void)
+{
+ struct clk *bclk32;
+
+ bclk32 = clk_get(NULL, "BUS32_CLK");
+ PS2_CNT = clk_get_rate(bclk32) / 200000; /* should > 5us */
+}
+
+static inline int i8042_read_data(void)
+{
+ return inb(I8042_DATA_REG);
+}
+
+static inline int i8042_read_status(void)
+{
+ return inb(I8042_STATUS_REG);
+}
+
+static inline void i8042_write_data(int val)
+{
+ outb(val, I8042_DATA_REG);
+}
+
+static inline void i8042_write_command(int val)
+{
+ outb(val, I8042_COMMAND_REG);
+}
+
+static inline int i8042_platform_init(void)
+{
+/*
+ * On some platforms touching the i8042 data register region can do really
+ * bad things. Because of this the region is always reserved on such boxes.
+ */
+ puv3_ps2_init();
+
+ if (!request_region(I8042_DATA_REG, 16, "i8042"))
+ return -EBUSY;
+
+ i8042_reset = 1;
+ return 0;
+}
+
+static inline void i8042_platform_exit(void)
+{
+ release_region(I8042_DATA_REG, 16);
+}
+
+#endif /* _I8042_UCIO_H */
--
1.7.3.5
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