[ARM] 4405/1: NSLU2, DSM-G600 frequency fixup code

This patch is required as the frequency fixup in nslu2_init does not
run sufficiently early in the boot sequence to take effect. In addition
the dsmg600 setup code behaviour has been improved such that a
'fixup' routine is avoided.

Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ixp4xx/common.c

@@ -283,7 +283,7 @@ static struct irqaction ixp4xx_timer_irq = {
 	.handler	= ixp4xx_timer_interrupt,
 };
 
-static void __init ixp4xx_timer_init(void)
+void __init ixp4xx_timer_init(void)
 {
 	/* Reset/disable counter */
 	*IXP4XX_OSRT1 = 0;

arch/arm/mach-ixp4xx/dsmg600-setup.c

@@ -18,6 +18,7 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
+#include <asm/mach/time.h>
 
 static struct flash_platform_data dsmg600_flash_data = {
 	.map_name		= "cfi_probe",
@@ -128,6 +129,19 @@ static void dsmg600_power_off(void)
 	gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
 }
 
+static void __init dsmg600_timer_init(void)
+{
+    /* The xtal on this machine is non-standard. */
+    ixp4xx_timer_freq = DSMG600_FREQ;
+
+    /* Call standard timer_init function. */
+    ixp4xx_timer_init();
+}
+
+static struct sys_timer dsmg600_timer = {
+    .init   = dsmg600_timer_init,
+};
+
 static void __init dsmg600_init(void)
 {
 	ixp4xx_sys_init();
@@ -155,21 +169,13 @@ static void __init dsmg600_init(void)
 #endif
 }
 
-static void __init dsmg600_fixup(struct machine_desc *desc,
-                struct tag *tags, char **cmdline, struct meminfo *mi)
-{
-       /* The xtal on this machine is non-standard. */
-        ixp4xx_timer_freq = DSMG600_FREQ;
-}
-
 MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
 	/* Maintainer: www.nslu2-linux.org */
 	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
 	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 	.boot_params	= 0x00000100,
-	.fixup          = dsmg600_fixup,
 	.map_io		= ixp4xx_map_io,
 	.init_irq	= ixp4xx_init_irq,
-	.timer          = &ixp4xx_timer,
+	.timer          = &dsmg600_timer,
 	.init_machine	= dsmg600_init,
 MACHINE_END

arch/arm/mach-ixp4xx/nslu2-setup.c

@@ -22,6 +22,7 @@
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
+#include <asm/mach/time.h>
 
 static struct flash_platform_data nslu2_flash_data = {
 	.map_name		= "cfi_probe",
@@ -157,10 +158,21 @@ static void nslu2_power_off(void)
 	gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
 }
 
+static void __init nslu2_timer_init(void)
+{
+    /* The xtal on this machine is non-standard. */
+    ixp4xx_timer_freq = NSLU2_FREQ;
+
+    /* Call standard timer_init function. */
+    ixp4xx_timer_init();
+}
+
+static struct sys_timer nslu2_timer = {
+    .init   = nslu2_timer_init,
+};
+
 static void __init nslu2_init(void)
 {
-	ixp4xx_timer_freq = NSLU2_FREQ;
-
 	ixp4xx_sys_init();
 
 	nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
@@ -185,6 +197,6 @@ MACHINE_START(NSLU2, "Linksys NSLU2")
 	.boot_params	= 0x00000100,
 	.map_io		= ixp4xx_map_io,
 	.init_irq	= ixp4xx_init_irq,
-	.timer          = &ixp4xx_timer,
+	.timer          = &nslu2_timer,
 	.init_machine	= nslu2_init,
 MACHINE_END

include/asm-arm/arch-ixp4xx/platform.h

@@ -113,6 +113,7 @@ extern unsigned long ixp4xx_timer_freq;
 extern void ixp4xx_map_io(void);
 extern void ixp4xx_init_irq(void);
 extern void ixp4xx_sys_init(void);
+extern void ixp4xx_timer_init(void);
 extern struct sys_timer ixp4xx_timer;
 extern void ixp4xx_pci_preinit(void);
 struct pci_sys_data;