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>

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
 

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);
 }
 

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)
 {
 }

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;

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);
+}

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);

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);
 }

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);

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

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

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));
+}

arch/arm/mach-ns9xxx/time.c → 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,
 };

include/asm-arm/arch-ns9xxx/clock.h

@@ -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 */

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

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)
 

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 */

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 */

include/asm-arm/arch-ns9xxx/regs-sys.h → 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 */

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();
 }