ns9xxx: prepare for adding support for Digi ns921x processors

The hardware team changed some things that were taken as being common to
all ns9xxx processors up to now.

This patch addresses:

- irqs: s/IRQ_/IRQ_NS9360_/

- system module registers: some registers are still general, their
  definition lives now in include/asm-arm/arch-ns9xxx/regs-sys-common.h.
  The ns9360 specific ones are in .../regs-sys-ns9360.h
  As a result ns9360_systemclock cannot be static inline any more as its
  definition needs regs-sys-ns9360.h.  This becomes a real problem when
  adding support for ns9215 as this will need regs-sys-ns9215.h and
  including both files will not work.  For the same reason
  ns9360_reset() is now non-inline and gpio functions live in their own
  file.

- register mapping: s/ns9xxx_map_io/ns9360_map_io/

- timer registers:  move time.c to time-ns9360.c;
  s/ns9xxx_timer/ns9360_timer/

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>

19 files changed, 407 insertions, 308 deletions

diff --git a/arch/arm/mach-ns9xxx/Makefile b/arch/arm/mach-ns9xxx/Makefile
index ca2c68dede1d..67a9e30c8789 100644
--- a/arch/arm/mach-ns9xxx/Makefile
+++ b/arch/arm/mach-ns9xxx/Makefile
@@ -1,8 +1,10 @@
-obj-y := irq.o time.o generic.o gpio.o
+obj-y := irq.o generic.o gpio.o
 
 obj-$(CONFIG_MACH_CC9P9360DEV) += mach-cc9p9360dev.o
 obj-$(CONFIG_MACH_CC9P9360JS) += mach-cc9p9360js.o
 
+obj-$(CONFIG_PROCESSOR_NS9360) += gpio-ns9360.o processor-ns9360.o time-ns9360.o
+
 obj-$(CONFIG_BOARD_A9M9750DEV) += board-a9m9750dev.o
 obj-$(CONFIG_BOARD_JSCC9P9360) += board-jscc9p9360.o
 
diff --git a/arch/arm/mach-ns9xxx/board-a9m9750dev.c b/arch/arm/mach-ns9xxx/board-a9m9750dev.c
index 14a06da25ac2..a494b71c0195 100644
--- a/arch/arm/mach-ns9xxx/board-a9m9750dev.c
+++ b/arch/arm/mach-ns9xxx/board-a9m9750dev.c
@@ -14,7 +14,8 @@
 #include <asm/gpio.h>
 
 #include <asm/arch-ns9xxx/board.h>
-#include <asm/arch-ns9xxx/regs-sys.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+#include <asm/arch-ns9xxx/regs-sys-ns9360.h>
 #include <asm/arch-ns9xxx/regs-mem.h>
 #include <asm/arch-ns9xxx/regs-bbu.h>
 #include <asm/arch-ns9xxx/regs-board-a9m9750dev.h>
@@ -103,9 +104,9 @@ void __init board_a9m9750dev_init_irq(void)
         int i;
 
         if (gpio_request(11, "board a9m9750dev extirq2") == 0)
-                ns9xxx_gpio_configure(11, 0, 1);
+                ns9360_gpio_configure(11, 0, 1);
         else
-                printk(KERN_ERR "%s: cannot get gpio 11 for IRQ_EXT2\n",
+                printk(KERN_ERR "%s: cannot get gpio 11 for IRQ_NS9XXX_EXT2\n",
                                 __func__);
 
         for (i = FPGA_IRQ(0); i <= FPGA_IRQ(7); ++i) {
@@ -114,13 +115,13 @@ void __init board_a9m9750dev_init_irq(void)
                 set_irq_flags(i, IRQF_VALID);
         }
 
-        /* IRQ_EXT2: level sensitive + active low */
+        /* IRQ_NS9XXX_EXT2: level sensitive + active low */
         eic = __raw_readl(SYS_EIC(2));
         REGSET(eic, SYS_EIC, PLTY, AL);
         REGSET(eic, SYS_EIC, LVEDG, LEVEL);
         __raw_writel(eic, SYS_EIC(2));
 
-        set_irq_chained_handler(IRQ_EXT2,
+        set_irq_chained_handler(IRQ_NS9XXX_EXT2,
                         a9m9750dev_fpga_demux_handler);
 }
 
diff --git a/arch/arm/mach-ns9xxx/generic.c b/arch/arm/mach-ns9xxx/generic.c
index d742c921e34d..1e0f467879cc 100644
--- a/arch/arm/mach-ns9xxx/generic.c
+++ b/arch/arm/mach-ns9xxx/generic.c
@@ -1,7 +1,7 @@
 /*
  * arch/arm/mach-ns9xxx/generic.c
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -11,34 +11,9 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <asm/memory.h>
-#include <asm/page.h>
-#include <asm/mach-types.h>
-#include <asm/mach/map.h>
-#include <asm/arch-ns9xxx/regs-sys.h>
-#include <asm/arch-ns9xxx/regs-mem.h>
-#include <asm/arch-ns9xxx/board.h>
 
 #include "generic.h"
 
-static struct map_desc standard_io_desc[] __initdata = {
-        { /* BBus */
-                .virtual = io_p2v(0x90000000),
-                .pfn = __phys_to_pfn(0x90000000),
-                .length = 0x00700000,
-                .type = MT_DEVICE,
-        }, { /* AHB */
-                .virtual = io_p2v(0xa0100000),
-                .pfn = __phys_to_pfn(0xa0100000),
-                .length = 0x00900000,
-                .type = MT_DEVICE,
-        },
-};
-
-void __init ns9xxx_map_io(void)
-{
-        iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
-}
-
 void __init ns9xxx_init_machine(void)
 {
 }
diff --git a/arch/arm/mach-ns9xxx/generic.h b/arch/arm/mach-ns9xxx/generic.h
index 687e291773f4..82493191aad6 100644
--- a/arch/arm/mach-ns9xxx/generic.h
+++ b/arch/arm/mach-ns9xxx/generic.h
@@ -1,7 +1,7 @@
 /*
  * arch/arm/mach-ns9xxx/generic.h
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -13,7 +13,4 @@
 #include <linux/init.h>
 
 void __init ns9xxx_init_irq(void);
-void __init ns9xxx_map_io(void);
 void __init ns9xxx_init_machine(void);
-
-extern struct sys_timer ns9xxx_timer;
diff --git a/arch/arm/mach-ns9xxx/gpio-ns9360.c b/arch/arm/mach-ns9xxx/gpio-ns9360.c
new file mode 100644
index 000000000000..cabfb879dda9
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/gpio-ns9360.c
@@ -0,0 +1,118 @@
+/*
+ * arch/arm/mach-ns9xxx/gpio-ns9360.c
+ *
+ * Copyright (C) 2006,2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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/bug.h>
+#include <linux/errno.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/arch-ns9xxx/regs-bbu.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+
+#include "gpio-ns9360.h"
+
+static inline int ns9360_valid_gpio(unsigned gpio)
+{
+        return gpio <= 72;
+}
+
+static inline void __iomem *ns9360_gpio_get_gconfaddr(unsigned gpio)
+{
+        if (gpio < 56)
+                return BBU_GCONFb1(gpio / 8);
+        else
+                /*
+                 * this could be optimised away on
+                 * ns9750 only builds, but it isn't ...
+                 */
+                return BBU_GCONFb2((gpio - 56) / 8);
+}
+
+static inline void __iomem *ns9360_gpio_get_gctrladdr(unsigned gpio)
+{
+        if (gpio < 32)
+                return BBU_GCTRL1;
+        else if (gpio < 64)
+                return BBU_GCTRL2;
+        else
+                /* this could be optimised away on ns9750 only builds */
+                return BBU_GCTRL3;
+}
+
+static inline void __iomem *ns9360_gpio_get_gstataddr(unsigned gpio)
+{
+        if (gpio < 32)
+                return BBU_GSTAT1;
+        else if (gpio < 64)
+                return BBU_GSTAT2;
+        else
+                /* this could be optimised away on ns9750 only builds */
+                return BBU_GSTAT3;
+}
+
+/*
+ * each gpio can serve for 4 different purposes [0..3].  These are called
+ * "functions" and passed in the parameter func.  Functions 0-2 are always some
+ * special things, function 3 is GPIO.  If func == 3 dir specifies input or
+ * output, and with inv you can enable an inverter (independent of func).
+ */
+int __ns9360_gpio_configure(unsigned gpio, int dir, int inv, int func)
+{
+        void __iomem *conf = ns9360_gpio_get_gconfaddr(gpio);
+        u32 confval;
+
+        confval = __raw_readl(conf);
+        REGSETIM_IDX(confval, BBU_GCONFx, DIR, gpio & 7, dir);
+        REGSETIM_IDX(confval, BBU_GCONFx, INV, gpio & 7, inv);
+        REGSETIM_IDX(confval, BBU_GCONFx, FUNC, gpio & 7, func);
+        __raw_writel(confval, conf);
+
+        return 0;
+}
+
+int ns9360_gpio_configure(unsigned gpio, int inv, int func)
+{
+        if (likely(ns9360_valid_gpio(gpio))) {
+                if (func == 3) {
+                        printk(KERN_WARNING "use gpio_direction_input "
+                                        "or gpio_direction_output\n");
+                        return -EINVAL;
+                } else
+                        return __ns9360_gpio_configure(gpio, 0, inv, func);
+        } else
+                return -EINVAL;
+}
+EXPORT_SYMBOL(ns9360_gpio_configure);
+
+int ns9360_gpio_get_value(unsigned gpio)
+{
+        void __iomem *stat = ns9360_gpio_get_gstataddr(gpio);
+        int ret;
+
+        ret = 1 & (__raw_readl(stat) >> (gpio & 31));
+
+        return ret;
+}
+
+void ns9360_gpio_set_value(unsigned gpio, int value)
+{
+        void __iomem *ctrl = ns9360_gpio_get_gctrladdr(gpio);
+        u32 ctrlval;
+
+        ctrlval = __raw_readl(ctrl);
+
+        if (value)
+                ctrlval |= 1 << (gpio & 31);
+        else
+                ctrlval &= ~(1 << (gpio & 31));
+
+        __raw_writel(ctrlval, ctrl);
+}
diff --git a/arch/arm/mach-ns9xxx/gpio-ns9360.h b/arch/arm/mach-ns9xxx/gpio-ns9360.h
new file mode 100644
index 000000000000..131cd1715caa
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/gpio-ns9360.h
@@ -0,0 +1,13 @@
+/*
+ * arch/arm/mach-ns9xxx/gpio-ns9360.h
+ *
+ * Copyright (C) 2006,2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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.
+ */
+int __ns9360_gpio_configure(unsigned gpio, int dir, int inv, int func);
+int ns9360_gpio_get_value(unsigned gpio);
+void ns9360_gpio_set_value(unsigned gpio, int value);
diff --git a/arch/arm/mach-ns9xxx/gpio.c b/arch/arm/mach-ns9xxx/gpio.c
index 5286e9fc1d30..b3c963b0c8f5 100644
--- a/arch/arm/mach-ns9xxx/gpio.c
+++ b/arch/arm/mach-ns9xxx/gpio.c
@@ -1,7 +1,7 @@
 /*
  * arch/arm/mach-ns9xxx/gpio.c
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -15,12 +15,13 @@
 
 #include <asm/arch-ns9xxx/gpio.h>
 #include <asm/arch-ns9xxx/processor.h>
-#include <asm/arch-ns9xxx/regs-bbu.h>
-#include <asm/io.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
 #include <asm/bug.h>
 #include <asm/types.h>
 #include <asm/bitops.h>
 
+#include "gpio-ns9360.h"
+
 #if defined(CONFIG_PROCESSOR_NS9360)
 #define GPIO_MAX 72
 #elif defined(CONFIG_PROCESSOR_NS9750)
@@ -45,41 +46,10 @@ static inline int ns9xxx_valid_gpio(unsigned gpio)
                 return gpio <= 49;
         else
 #endif
+        {
                 BUG();
-}
-
-static inline void __iomem *ns9xxx_gpio_get_gconfaddr(unsigned gpio)
-{
-        if (gpio < 56)
-                return BBU_GCONFb1(gpio / 8);
-        else
-                /*
-                 * this could be optimised away on
-                 * ns9750 only builds, but it isn't ...
-                 */
-                return BBU_GCONFb2((gpio - 56) / 8);
-}
-
-static inline void __iomem *ns9xxx_gpio_get_gctrladdr(unsigned gpio)
-{
-        if (gpio < 32)
-                return BBU_GCTRL1;
-        else if (gpio < 64)
-                return BBU_GCTRL2;
-        else
-                /* this could be optimised away on ns9750 only builds */
-                return BBU_GCTRL3;
-}
-
-static inline void __iomem *ns9xxx_gpio_get_gstataddr(unsigned gpio)
-{
-        if (gpio < 32)
-                return BBU_GSTAT1;
-        else if (gpio < 64)
-                return BBU_GSTAT2;
-        else
-                /* this could be optimised away on ns9750 only builds */
-                return BBU_GSTAT3;
+                return 0;
+        }
 }
 
 int gpio_request(unsigned gpio, const char *label)
@@ -98,49 +68,24 @@ void gpio_free(unsigned gpio)
 }
 EXPORT_SYMBOL(gpio_free);
 
-/*
- * each gpio can serve for 4 different purposes [0..3].  These are called
- * "functions" and passed in the parameter func.  Functions 0-2 are always some
- * special things, function 3 is GPIO.  If func == 3 dir specifies input or
- * output, and with inv you can enable an inverter (independent of func).
- */
-static int __ns9xxx_gpio_configure(unsigned gpio, int dir, int inv, int func)
+int gpio_direction_input(unsigned gpio)
 {
-        void __iomem *conf = ns9xxx_gpio_get_gconfaddr(gpio);
-        u32 confval;
-        unsigned long flags;
-
-        spin_lock_irqsave(&gpio_lock, flags);
-
-        confval = __raw_readl(conf);
-        REGSETIM_IDX(confval, BBU_GCONFx, DIR, gpio & 7, dir);
-        REGSETIM_IDX(confval, BBU_GCONFx, INV, gpio & 7, inv);
-        REGSETIM_IDX(confval, BBU_GCONFx, FUNC, gpio & 7, func);
-        __raw_writel(confval, conf);
+        if (likely(ns9xxx_valid_gpio(gpio))) {
+                int ret = -EINVAL;
+                unsigned long flags;
 
-        spin_unlock_irqrestore(&gpio_lock, flags);
+                spin_lock_irqsave(&gpio_lock, flags);
+#if defined(CONFIG_PROCESSOR_NS9360)
+                if (processor_is_ns9360())
+                        ret = __ns9360_gpio_configure(gpio, 0, 0, 3);
+                else
+#endif
+                        BUG();
 
-        return 0;
-}
+                spin_unlock_irqrestore(&gpio_lock, flags);
 
-int ns9xxx_gpio_configure(unsigned gpio, int inv, int func)
-{
-        if (likely(ns9xxx_valid_gpio(gpio))) {
-                if (func == 3) {
-                        printk(KERN_WARNING "use gpio_direction_input "
-                                        "or gpio_direction_output\n");
-                        return -EINVAL;
-                } else
-                        return __ns9xxx_gpio_configure(gpio, 0, inv, func);
-        } else
-                return -EINVAL;
-}
-EXPORT_SYMBOL(ns9xxx_gpio_configure);
+                return ret;
 
-int gpio_direction_input(unsigned gpio)
-{
-        if (likely(ns9xxx_valid_gpio(gpio))) {
-                return __ns9xxx_gpio_configure(gpio, 0, 0, 3);
         } else
                 return -EINVAL;
 }
@@ -149,9 +94,22 @@ EXPORT_SYMBOL(gpio_direction_input);
 int gpio_direction_output(unsigned gpio, int value)
 {
         if (likely(ns9xxx_valid_gpio(gpio))) {
+                int ret = -EINVAL;
+                unsigned long flags;
+
                 gpio_set_value(gpio, value);
 
-                return __ns9xxx_gpio_configure(gpio, 1, 0, 3);
+                spin_lock_irqsave(&gpio_lock, flags);
+#if defined(CONFIG_PROCESSOR_NS9360)
+                if (processor_is_ns9360())
+                        ret = __ns9360_gpio_configure(gpio, 1, 0, 3);
+                else
+#endif
+                        BUG();
+
+                spin_unlock_irqrestore(&gpio_lock, flags);
+
+                return ret;
         } else
                 return -EINVAL;
 }
@@ -159,31 +117,28 @@ EXPORT_SYMBOL(gpio_direction_output);
 
 int gpio_get_value(unsigned gpio)
 {
-        void __iomem *stat = ns9xxx_gpio_get_gstataddr(gpio);
-        int ret;
-
-        ret = 1 & (__raw_readl(stat) >> (gpio & 31));
-
-        return ret;
+#if defined(CONFIG_PROCESSOR_NS9360)
+        if (processor_is_ns9360())
+                return ns9360_gpio_get_value(gpio);
+        else
+#endif
+        {
+                BUG();
+                return -EINVAL;
+        }
 }
 EXPORT_SYMBOL(gpio_get_value);
 
 void gpio_set_value(unsigned gpio, int value)
 {
-        void __iomem *ctrl = ns9xxx_gpio_get_gctrladdr(gpio);
-        u32 ctrlval;
         unsigned long flags;
-
         spin_lock_irqsave(&gpio_lock, flags);
-
-        ctrlval = __raw_readl(ctrl);
-
-        if (value)
-                ctrlval |= 1 << (gpio & 31);
+#if defined(CONFIG_PROCESSOR_NS9360)
+        if (processor_is_ns9360())
+                ns9360_gpio_set_value(gpio, value);
         else
-                ctrlval &= ~(1 << (gpio & 31));
-
-        __raw_writel(ctrlval, ctrl);
+#endif
+                BUG();
 
         spin_unlock_irqrestore(&gpio_lock, flags);
 }
diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c
index 00001b874e97..d4a583cc44c5 100644
--- a/arch/arm/mach-ns9xxx/irq.c
+++ b/arch/arm/mach-ns9xxx/irq.c
@@ -12,7 +12,7 @@
 #include <asm/io.h>
 #include <asm/mach/irq.h>
 #include <asm/mach-types.h>
-#include <asm/arch-ns9xxx/regs-sys.h>
+#include <asm/arch-ns9xxx/regs-sys-common.h>
 #include <asm/arch-ns9xxx/irqs.h>
 #include <asm/arch-ns9xxx/board.h>
 
@@ -67,7 +67,7 @@ void __init ns9xxx_init_irq(void)
         for (i = 0; i < 32; ++i)
                 __raw_writel(i, SYS_IVA(i));
 
-        for (i = IRQ_WATCHDOG; i <= IRQ_EXT3; ++i) {
+        for (i = 0; i <= 31; ++i) {
                 set_irq_chip(i, &ns9xxx_chip);
                 set_irq_handler(i, handle_level_irq);
                 set_irq_flags(i, IRQF_VALID);
diff --git a/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c b/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c
index 760c9d0db7c3..9623fff6b3bc 100644
--- a/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c
+++ b/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c
@@ -1,7 +1,7 @@
 /*
  * arch/arm/mach-ns9xxx/mach-cc9p9360dev.c
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -11,12 +11,14 @@
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
 
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+
 #include "board-a9m9750dev.h"
 #include "generic.h"
 
 static void __init mach_cc9p9360dev_map_io(void)
 {
-        ns9xxx_map_io();
+        ns9360_map_io();
         board_a9m9750dev_map_io();
 }
 
@@ -36,6 +38,6 @@ MACHINE_START(CC9P9360DEV, "Digi ConnectCore 9P 9360 on an A9M9750 Devboard")
         .map_io = mach_cc9p9360dev_map_io,
         .init_irq = mach_cc9p9360dev_init_irq,
         .init_machine = mach_cc9p9360dev_init_machine,
-        .timer = &ns9xxx_timer,
+        .timer = &ns9360_timer,
         .boot_params = 0x100,
 MACHINE_END
diff --git a/arch/arm/mach-ns9xxx/mach-cc9p9360js.c b/arch/arm/mach-ns9xxx/mach-cc9p9360js.c
index 85c8b41105c9..fcc815bdd291 100644
--- a/arch/arm/mach-ns9xxx/mach-cc9p9360js.c
+++ b/arch/arm/mach-ns9xxx/mach-cc9p9360js.c
@@ -1,7 +1,7 @@
 /*
  * arch/arm/mach-ns9xxx/mach-cc9p9360js.c
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -11,6 +11,8 @@
 #include <asm/mach/arch.h>
 #include <asm/mach-types.h>
 
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+
 #include "board-jscc9p9360.h"
 #include "generic.h"
 
@@ -21,9 +23,9 @@ static void __init mach_cc9p9360js_init_machine(void)
 }
 
 MACHINE_START(CC9P9360JS, "Digi ConnectCore 9P 9360 on an JSCC9P9360 Devboard")
-        .map_io = ns9xxx_map_io,
+        .map_io = ns9360_map_io,
         .init_irq = ns9xxx_init_irq,
         .init_machine = mach_cc9p9360js_init_machine,
-        .timer = &ns9xxx_timer,
+        .timer = &ns9360_timer,
         .boot_params = 0x100,
 MACHINE_END
diff --git a/arch/arm/mach-ns9xxx/processor-ns9360.c b/arch/arm/mach-ns9xxx/processor-ns9360.c
new file mode 100644
index 000000000000..2bee0b7fccbb
--- /dev/null
+++ b/arch/arm/mach-ns9xxx/processor-ns9360.c
@@ -0,0 +1,54 @@
+/*
+ * arch/arm/mach-ns9xxx/processor-ns9360.c
+ *
+ * Copyright (C) 2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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/io.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include <asm/page.h>
+#include <asm/mach/map.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+#include <asm/arch-ns9xxx/regs-sys-ns9360.h>
+
+void ns9360_reset(char mode)
+{
+        u32 reg;
+
+        reg = __raw_readl(SYS_PLL) >> 16;
+        REGSET(reg, SYS_PLL, SWC, YES);
+        __raw_writel(reg, SYS_PLL);
+}
+
+#define CRYSTAL 29491200 /* Hz */
+unsigned long ns9360_systemclock(void)
+{
+        u32 pll = __raw_readl(SYS_PLL);
+        return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1)
+                >> REGGETIM(pll, SYS_PLL, FS);
+}
+
+static struct map_desc ns9360_io_desc[] __initdata = {
+        { /* BBus */
+                .virtual = io_p2v(0x90000000),
+                .pfn = __phys_to_pfn(0x90000000),
+                .length = 0x00700000,
+                .type = MT_DEVICE,
+        }, { /* AHB */
+                .virtual = io_p2v(0xa0100000),
+                .pfn = __phys_to_pfn(0xa0100000),
+                .length = 0x00900000,
+                .type = MT_DEVICE,
+        },
+};
+
+void __init ns9360_map_io(void)
+{
+        iotable_init(ns9360_io_desc, ARRAY_SIZE(ns9360_io_desc));
+}
diff --git a/arch/arm/mach-ns9xxx/time.c b/arch/arm/mach-ns9xxx/time-ns9360.c
index c3dd1f4acb99..4d573c9793ed 100644
--- a/arch/arm/mach-ns9xxx/time.c
+++ b/arch/arm/mach-ns9xxx/time-ns9360.c
@@ -1,7 +1,7 @@
 /*
- * arch/arm/mach-ns9xxx/time.c
+ * arch/arm/mach-ns9xxx/time-ns9360.c
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -15,8 +15,8 @@
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 
-#include <asm/arch-ns9xxx/regs-sys.h>
-#include <asm/arch-ns9xxx/clock.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
+#include <asm/arch-ns9xxx/regs-sys-ns9360.h>
 #include <asm/arch-ns9xxx/irqs.h>
 #include <asm/arch/system.h>
 #include "generic.h"
@@ -25,26 +25,26 @@
 #define TIMER_CLOCKEVENT 1
 static u32 latch;
 
-static cycle_t ns9xxx_clocksource_read(void)
+static cycle_t ns9360_clocksource_read(void)
 {
         return __raw_readl(SYS_TR(TIMER_CLOCKSOURCE));
 }
 
-static struct clocksource ns9xxx_clocksource = {
-        .name   = "ns9xxx-timer" __stringify(TIMER_CLOCKSOURCE),
+static struct clocksource ns9360_clocksource = {
+        .name   = "ns9360-timer" __stringify(TIMER_CLOCKSOURCE),
         .rating = 300,
-        .read   = ns9xxx_clocksource_read,
+        .read   = ns9360_clocksource_read,
         .mask   = CLOCKSOURCE_MASK(32),
         .shift  = 20,
         .flags  = CLOCK_SOURCE_IS_CONTINUOUS,
 };
 
-static void ns9xxx_clockevent_setmode(enum clock_event_mode mode,
+static void ns9360_clockevent_setmode(enum clock_event_mode mode,
                 struct clock_event_device *clk)
 {
         u32 tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT));
 
-        switch(mode) {
+        switch (mode) {
         case CLOCK_EVT_MODE_PERIODIC:
                 __raw_writel(latch, SYS_TRC(TIMER_CLOCKEVENT));
                 REGSET(tc, SYS_TCx, REN, EN);
@@ -69,7 +69,7 @@ static void ns9xxx_clockevent_setmode(enum clock_event_mode mode,
         __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT));
 }
 
-static int ns9xxx_clockevent_setnextevent(unsigned long evt,
+static int ns9360_clockevent_setnextevent(unsigned long evt,
                 struct clock_event_device *clk)
 {
         u32 tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT));
@@ -88,20 +88,20 @@ static int ns9xxx_clockevent_setnextevent(unsigned long evt,
         return 0;
 }
 
-static struct clock_event_device ns9xxx_clockevent_device = {
-        .name           = "ns9xxx-timer" __stringify(TIMER_CLOCKEVENT),
+static struct clock_event_device ns9360_clockevent_device = {
+        .name           = "ns9360-timer" __stringify(TIMER_CLOCKEVENT),
         .shift          = 20,
         .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-        .set_mode       = ns9xxx_clockevent_setmode,
-        .set_next_event = ns9xxx_clockevent_setnextevent,
+        .set_mode       = ns9360_clockevent_setmode,
+        .set_next_event = ns9360_clockevent_setnextevent,
 };
 
-static irqreturn_t ns9xxx_clockevent_handler(int irq, void *dev_id)
+static irqreturn_t ns9360_clockevent_handler(int irq, void *dev_id)
 {
-        int timerno = irq - IRQ_TIMER0;
+        int timerno = irq - IRQ_NS9360_TIMER0;
         u32 tc;
 
-        struct clock_event_device *evt = &ns9xxx_clockevent_device;
+        struct clock_event_device *evt = &ns9360_clockevent_device;
 
         /* clear irq */
         tc = __raw_readl(SYS_TC(timerno));
@@ -119,13 +119,13 @@ static irqreturn_t ns9xxx_clockevent_handler(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-static struct irqaction ns9xxx_clockevent_action = {
-        .name           = "ns9xxx-timer" __stringify(TIMER_CLOCKEVENT),
+static struct irqaction ns9360_clockevent_action = {
+        .name           = "ns9360-timer" __stringify(TIMER_CLOCKEVENT),
         .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-        .handler        = ns9xxx_clockevent_handler,
+        .handler        = ns9360_clockevent_handler,
 };
 
-static void __init ns9xxx_timer_init(void)
+static void __init ns9360_timer_init(void)
 {
         int tc;
 
@@ -148,12 +148,12 @@ static void __init ns9xxx_timer_init(void)
 
         __raw_writel(tc, SYS_TC(TIMER_CLOCKSOURCE));
 
-        ns9xxx_clocksource.mult = clocksource_hz2mult(ns9xxx_cpuclock(),
-                        ns9xxx_clocksource.shift);
+        ns9360_clocksource.mult = clocksource_hz2mult(ns9360_cpuclock(),
+                        ns9360_clocksource.shift);
 
-        clocksource_register(&ns9xxx_clocksource);
+        clocksource_register(&ns9360_clocksource);
 
-        latch = SH_DIV(ns9xxx_cpuclock(), HZ, 0);
+        latch = SH_DIV(ns9360_cpuclock(), HZ, 0);
 
         tc = __raw_readl(SYS_TC(TIMER_CLOCKEVENT));
         REGSET(tc, SYS_TCx, TEN, DIS);
@@ -166,19 +166,20 @@ static void __init ns9xxx_timer_init(void)
         REGSET(tc, SYS_TCx, REN, EN);
         __raw_writel(tc, SYS_TC(TIMER_CLOCKEVENT));
 
-        ns9xxx_clockevent_device.mult = div_sc(ns9xxx_cpuclock(),
-                        NSEC_PER_SEC, ns9xxx_clockevent_device.shift);
-        ns9xxx_clockevent_device.max_delta_ns =
-                clockevent_delta2ns(-1, &ns9xxx_clockevent_device);
-        ns9xxx_clockevent_device.min_delta_ns =
-                clockevent_delta2ns(1, &ns9xxx_clockevent_device);
+        ns9360_clockevent_device.mult = div_sc(ns9360_cpuclock(),
+                        NSEC_PER_SEC, ns9360_clockevent_device.shift);
+        ns9360_clockevent_device.max_delta_ns =
+                clockevent_delta2ns(-1, &ns9360_clockevent_device);
+        ns9360_clockevent_device.min_delta_ns =
+                clockevent_delta2ns(1, &ns9360_clockevent_device);
 
-        ns9xxx_clockevent_device.cpumask = cpumask_of_cpu(0);
-        clockevents_register_device(&ns9xxx_clockevent_device);
+        ns9360_clockevent_device.cpumask = cpumask_of_cpu(0);
+        clockevents_register_device(&ns9360_clockevent_device);
 
-        setup_irq(IRQ_TIMER0 + TIMER_CLOCKEVENT, &ns9xxx_clockevent_action);
+        setup_irq(IRQ_NS9360_TIMER0 + TIMER_CLOCKEVENT,
+                        &ns9360_clockevent_action);
 }
 
-struct sys_timer ns9xxx_timer = {
-        .init = ns9xxx_timer_init,
+struct sys_timer ns9360_timer = {
+        .init = ns9360_timer_init,
 };
diff --git a/include/asm-arm/arch-ns9xxx/clock.h b/include/asm-arm/arch-ns9xxx/clock.h
deleted file mode 100644
index b943d3a92a1d..000000000000
--- a/include/asm-arm/arch-ns9xxx/clock.h
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * include/asm-arm/arch-ns9xxx/clock.h
- *
- * Copyright (C) 2007 by Digi International Inc.
- * All rights reserved.
- *
- * 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 __ASM_ARCH_CLOCK_H
-#define __ASM_ARCH_CLOCK_H
-
-#include <asm/arch-ns9xxx/regs-sys.h>
-
-#define CRYSTAL 29491200 /* Hz */
-
-/* The HRM calls this value f_vco */
-static inline u32 ns9xxx_systemclock(void) __attribute__((const));
-static inline u32 ns9xxx_systemclock(void)
-{
-        u32 pll = __raw_readl(SYS_PLL);
-
-        /*
-         * The system clock should be a multiple of HZ * TIMERCLOCKSELECT (in
-         * time.c).
-         *
-         * The following values are given:
-         *   - TIMERCLOCKSELECT == 2^i for an i in {0 .. 6}
-         *   - CRYSTAL == 29491200 == 2^17 * 3^2 * 5^2
-         *   - ND in {0 .. 31}
-         *   - FS in {0 .. 3}
-         *
-         * Assuming the worst, we consider:
-         *   - TIMERCLOCKSELECT == 64
-         *   - ND == 0
-         *   - FS == 3
-         *
-         * So HZ should be a divisor of:
-         *      (CRYSTAL * (ND + 1) >> FS) / TIMERCLOCKSELECT
-         *   == (2^17 * 3^2 * 5^2 * 1 >> 3) / 64
-         *   == 2^8 * 3^2 * 5^2
-         *   == 57600
-         *
-         * Currently HZ is defined to be 100 for this platform.
-         *
-         * Fine.
-         */
-        return CRYSTAL * (REGGETIM(pll, SYS_PLL, ND) + 1)
-                >> REGGETIM(pll, SYS_PLL, FS);
-}
-
-static inline u32 ns9xxx_cpuclock(void) __attribute__((const));
-static inline u32 ns9xxx_cpuclock(void)
-{
-        return ns9xxx_systemclock() / 2;
-}
-
-static inline u32 ns9xxx_ahbclock(void) __attribute__((const));
-static inline u32 ns9xxx_ahbclock(void)
-{
-        return ns9xxx_systemclock() / 4;
-}
-
-static inline u32 ns9xxx_bbusclock(void) __attribute__((const));
-static inline u32 ns9xxx_bbusclock(void)
-{
-        return ns9xxx_systemclock() / 8;
-}
-
-#endif /* ifndef __ASM_ARCH_CLOCK_H */
diff --git a/include/asm-arm/arch-ns9xxx/entry-macro.S b/include/asm-arm/arch-ns9xxx/entry-macro.S
index 5c706dd2379c..89a21c530468 100644
--- a/include/asm-arm/arch-ns9xxx/entry-macro.S
+++ b/include/asm-arm/arch-ns9xxx/entry-macro.S
@@ -1,7 +1,7 @@
 /*
  * include/asm-arm/arch-ns9xxx/entry-macro.S
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -9,7 +9,7 @@
  * the Free Software Foundation.
  */
 #include <asm/hardware.h>
-#include <asm/arch-ns9xxx/regs-sys.h>
+#include <asm/arch-ns9xxx/regs-sys-common.h>
 
                 .macro  get_irqnr_preamble, base, tmp
                 ldr     \base, =SYS_ISRADDR
diff --git a/include/asm-arm/arch-ns9xxx/irqs.h b/include/asm-arm/arch-ns9xxx/irqs.h
index 25d8d28b27f3..e83d48ec42c9 100644
--- a/include/asm-arm/arch-ns9xxx/irqs.h
+++ b/include/asm-arm/arch-ns9xxx/irqs.h
@@ -1,7 +1,7 @@
 /*
  * include/asm-arm/arch-ns9xxx/irqs.h
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -11,38 +11,39 @@
 #ifndef __ASM_ARCH_IRQS_H
 #define __ASM_ARCH_IRQS_H
 
-#define IRQ_WATCHDOG    0
-#define IRQ_AHBBUSERR   1
-#define IRQ_BBUSAGG     2
+/* NetSilicon 9360 */
+#define IRQ_NS9XXX_WATCHDOG     0
+#define IRQ_NS9XXX_AHBBUSERR    1
+#define IRQ_NS9360_BBUSAGG      2
 /* irq 3 is reserved for NS9360 */
-#define IRQ_ETHRX       4
-#define IRQ_ETHTX       5
-#define IRQ_ETHPHY      6
-#define IRQ_LCD         7
-#define IRQ_SERBRX      8
-#define IRQ_SERBTX      9
-#define IRQ_SERARX      10
-#define IRQ_SERATX      11
-#define IRQ_SERCRX      12
-#define IRQ_SERCTX      13
-#define IRQ_I2C         14
-#define IRQ_BBUSDMA     15
-#define IRQ_TIMER0      16
-#define IRQ_TIMER1      17
-#define IRQ_TIMER2      18
-#define IRQ_TIMER3      19
-#define IRQ_TIMER4      20
-#define IRQ_TIMER5      21
-#define IRQ_TIMER6      22
-#define IRQ_TIMER7      23
-#define IRQ_RTC         24
-#define IRQ_USBHOST     25
-#define IRQ_USBDEVICE   26
-#define IRQ_IEEE1284    27
-#define IRQ_EXT0        28
-#define IRQ_EXT1        29
-#define IRQ_EXT2        30
-#define IRQ_EXT3        31
+#define IRQ_NS9XXX_ETHRX        4
+#define IRQ_NS9XXX_ETHTX        5
+#define IRQ_NS9XXX_ETHPHY       6
+#define IRQ_NS9360_LCD          7
+#define IRQ_NS9360_SERBRX       8
+#define IRQ_NS9360_SERBTX       9
+#define IRQ_NS9360_SERARX       10
+#define IRQ_NS9360_SERATX       11
+#define IRQ_NS9360_SERCRX       12
+#define IRQ_NS9360_SERCTX       13
+#define IRQ_NS9360_I2C          14
+#define IRQ_NS9360_BBUSDMA      15
+#define IRQ_NS9360_TIMER0       16
+#define IRQ_NS9360_TIMER1       17
+#define IRQ_NS9360_TIMER2       18
+#define IRQ_NS9360_TIMER3       19
+#define IRQ_NS9360_TIMER4       20
+#define IRQ_NS9360_TIMER5       21
+#define IRQ_NS9360_TIMER6       22
+#define IRQ_NS9360_TIMER7       23
+#define IRQ_NS9360_RTC          24
+#define IRQ_NS9360_USBHOST      25
+#define IRQ_NS9360_USBDEVICE    26
+#define IRQ_NS9360_IEEE1284     27
+#define IRQ_NS9XXX_EXT0         28
+#define IRQ_NS9XXX_EXT1         29
+#define IRQ_NS9XXX_EXT2         30
+#define IRQ_NS9XXX_EXT3         31
 
 #define BBUS_IRQ(irq)   (32 + irq)
 
@@ -67,7 +68,7 @@
 /*
  * these Interrupts are specific for the a9m9750dev board.
  * They are generated by an FPGA that interrupts the CPU on
- * IRQ_EXT2
+ * IRQ_NS9360_EXT2
  */
 #define FPGA_IRQ(irq)   (64 + irq)
 
diff --git a/include/asm-arm/arch-ns9xxx/processor-ns9360.h b/include/asm-arm/arch-ns9xxx/processor-ns9360.h
new file mode 100644
index 000000000000..f3aa6c50dbe5
--- /dev/null
+++ b/include/asm-arm/arch-ns9xxx/processor-ns9360.h
@@ -0,0 +1,32 @@
+/*
+ * include/asm-arm/arch-ns9xxx/processor-ns9360.h
+ *
+ * Copyright (C) 2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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 __ASM_ARCH_PROCESSORNS9360_H
+#define __ASM_ARCH_PROCESSORNS9360_H
+
+#include <linux/init.h>
+
+void ns9360_reset(char mode);
+
+unsigned long ns9360_systemclock(void) __attribute__((const));
+
+static inline unsigned long ns9360_cpuclock(void) __attribute__((const));
+static inline unsigned long ns9360_cpuclock(void)
+{
+        return ns9360_systemclock() / 2;
+}
+
+void __init ns9360_map_io(void);
+
+extern struct sys_timer ns9360_timer;
+
+int ns9360_gpio_configure(unsigned gpio, int inv, int func);
+
+#endif /* ifndef __ASM_ARCH_PROCESSORNS9360_H */
diff --git a/include/asm-arm/arch-ns9xxx/regs-sys-common.h b/include/asm-arm/arch-ns9xxx/regs-sys-common.h
new file mode 100644
index 000000000000..956c57cb781f
--- /dev/null
+++ b/include/asm-arm/arch-ns9xxx/regs-sys-common.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-arm/arch-ns9xxx/regs-sys-common.h
+ *
+ * Copyright (C) 2007 by Digi International Inc.
+ * All rights reserved.
+ *
+ * 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 __ASM_ARCH_REGSSYSCOMMON_H
+#define __ASM_ARCH_REGSSYSCOMMON_H
+#include <asm/hardware.h>
+
+/* Interrupt Vector Address Register Level x */
+#define SYS_IVA(x)      __REG2(0xa09000c4, (x))
+
+/* Interrupt Configuration registers */
+#define SYS_IC(x)       __REG2(0xa0900144, (x))
+
+/* ISRADDR */
+#define SYS_ISRADDR     __REG(0xa0900164)
+
+/* Interrupt Status Active */
+#define SYS_ISA         __REG(0xa0900168)
+
+/* Interrupt Status Raw */
+#define SYS_ISR         __REG(0xa090016c)
+
+#endif /* ifndef __ASM_ARCH_REGSSYSCOMMON_H */
diff --git a/include/asm-arm/arch-ns9xxx/regs-sys.h b/include/asm-arm/arch-ns9xxx/regs-sys-ns9360.h
index 749262f86204..318b6945afb6 100644
--- a/include/asm-arm/arch-ns9xxx/regs-sys.h
+++ b/include/asm-arm/arch-ns9xxx/regs-sys-ns9360.h
@@ -1,15 +1,15 @@
 /*
- * include/asm-arm/arch-ns9xxx/regs-sys.h
+ * include/asm-arm/arch-ns9xxx/regs-sys-ns9360.h
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * 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 __ASM_ARCH_REGSSYS_H
-#define __ASM_ARCH_REGSSYS_H
+#ifndef __ASM_ARCH_REGSSYSNS9360_H
+#define __ASM_ARCH_REGSSYSNS9360_H
 
 #include <asm/hardware.h>
 
@@ -27,21 +27,6 @@
 /* Timer x Read register */
 #define SYS_TR(x)       __REG2(0xa0900084, (x))
 
-/* Interrupt Vector Address Register Level x */
-#define SYS_IVA(x)      __REG2(0xa09000c4, (x))
-
-/* Interrupt Configuration registers */
-#define SYS_IC(x)       __REG2(0xa0900144, (x))
-
-/* ISRADDR */
-#define SYS_ISRADDR     __REG(0xa0900164)
-
-/* Interrupt Status Active */
-#define SYS_ISA         __REG(0xa0900168)
-
-/* Interrupt Status Raw */
-#define SYS_ISR         __REG(0xa090016c)
-
 /* Timer Interrupt Status register */
 #define SYS_TIS         __REG(0xa0900170)
 
@@ -160,4 +145,4 @@
 #define SYS_EIC_LVEDG_LEVEL             __REGVAL(SYS_EIC_LVEDG, 0)
 #define SYS_EIC_LVEDG_EDGE              __REGVAL(SYS_EIC_LVEDG, 1)
 
-#endif /* ifndef __ASM_ARCH_REGSSYS_H */
+#endif /* ifndef __ASM_ARCH_REGSSYSNS9360_H */
diff --git a/include/asm-arm/arch-ns9xxx/system.h b/include/asm-arm/arch-ns9xxx/system.h
index c1082bd8977c..1348073afe48 100644
--- a/include/asm-arm/arch-ns9xxx/system.h
+++ b/include/asm-arm/arch-ns9xxx/system.h
@@ -1,7 +1,7 @@
 /*
  * include/asm-arm/arch-ns9xxx/system.h
  *
- * Copyright (C) 2006 by Digi International Inc.
+ * Copyright (C) 2006,2007 by Digi International Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
@@ -12,8 +12,8 @@
 #define __ASM_ARCH_SYSTEM_H
 
 #include <asm/proc-fns.h>
-#include <asm/arch-ns9xxx/regs-sys.h>
-#include <asm/mach-types.h>
+#include <asm/arch-ns9xxx/processor.h>
+#include <asm/arch-ns9xxx/processor-ns9360.h>
 
 static inline void arch_idle(void)
 {
@@ -22,11 +22,12 @@ static inline void arch_idle(void)
 
 static inline void arch_reset(char mode)
 {
-        u32 reg;
-
-        reg = __raw_readl(SYS_PLL) >> 16;
-        REGSET(reg, SYS_PLL, SWC, YES);
-        __raw_writel(reg, SYS_PLL);
+#ifdef CONFIG_PROCESSOR_NS9360
+        if (processor_is_ns9360())
+                ns9360_reset(mode);
+        else
+#endif
+                BUG();
 
         BUG();
 }