ARM: Basic IO mappings for mach-tcc8k

Map the IO ranges of TCC8xxx peripherals.

Signed-off-by: "Hans J. Koch" <hjk@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

3 files changed, 64 insertions, 1 deletions

diff --git a/arch/arm/mach-tcc8k/Makefile b/arch/arm/mach-tcc8k/Makefile
index b4a12f294c5..446c4c9f070 100644
--- a/arch/arm/mach-tcc8k/Makefile
+++ b/arch/arm/mach-tcc8k/Makefile
@@ -3,4 +3,4 @@
 #
 
 # Common support
-obj-y += clock.o irq.o time.o
+obj-y += clock.o irq.o time.o io.o
diff --git a/arch/arm/mach-tcc8k/common.h b/arch/arm/mach-tcc8k/common.h
index 858210ecd67..365f18adf30 100644
--- a/arch/arm/mach-tcc8k/common.h
+++ b/arch/arm/mach-tcc8k/common.h
@@ -6,5 +6,6 @@ struct clk;
 extern void tcc_clocks_init(unsigned long xi_freq, unsigned long xti_freq);
 extern void tcc8k_timer_init(struct clk *clock, void __iomem *base, int irq);
 extern void tcc8k_init_irq(void);
+extern void tcc8k_map_common_io(void);
 
 #endif
diff --git a/arch/arm/mach-tcc8k/io.c b/arch/arm/mach-tcc8k/io.c
new file mode 100644
index 00000000000..9b39d7fa658
--- /dev/null
+++ b/arch/arm/mach-tcc8k/io.c
@@ -0,0 +1,62 @@
+/*
+ * linux/arch/arm/mach-tcc8k/io.c
+ *
+ * (C) 2009 Hans J. Koch <hjk@linutronix.de>
+ *
+ * derived from TCC83xx io.c
+ * Copyright (C) Telechips, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/tcc8k-regs.h>
+
+/*
+ * The machine specific code may provide the extra mapping besides the
+ * default mapping provided here.
+ */
+static struct map_desc tcc8k_io_desc[] __initdata = {
+        {
+                .virtual        = (unsigned long)CS1_BASE_VIRT,
+                .pfn            = __phys_to_pfn(CS1_BASE),
+                .length         = CS1_SIZE,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)AHB_PERI_BASE_VIRT,
+                .pfn            = __phys_to_pfn(AHB_PERI_BASE),
+                .length         = AHB_PERI_SIZE,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)APB0_PERI_BASE_VIRT,
+                .pfn            = __phys_to_pfn(APB0_PERI_BASE),
+                .length         = APB0_PERI_SIZE,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)APB1_PERI_BASE_VIRT,
+                .pfn            = __phys_to_pfn(APB1_PERI_BASE),
+                .length         = APB1_PERI_SIZE,
+                .type           = MT_DEVICE,
+        }, {
+                .virtual        = (unsigned long)EXT_MEM_CTRL_BASE_VIRT,
+                .pfn            = __phys_to_pfn(EXT_MEM_CTRL_BASE),
+                .length         = EXT_MEM_CTRL_SIZE,
+                .type           = MT_DEVICE,
+        },
+};
+
+/*
+ * Maps common IO regions for tcc8k.
+ *
+ */
+void __init tcc8k_map_common_io(void)
+{
+        iotable_init(tcc8k_io_desc, ARRAY_SIZE(tcc8k_io_desc));
+}