Merge branch 'linus' into release

15 files changed, 78 insertions, 54 deletions

diff --git a/arch/arm/mach-footbridge/cats-hw.c b/arch/arm/mach-footbridge/cats-hw.c
index 6a5b437ab86f..1b996b26d2e0 100644
--- a/arch/arm/mach-footbridge/cats-hw.c
+++ b/arch/arm/mach-footbridge/cats-hw.c
@@ -10,6 +10,7 @@
 #include <linux/init.h>
 #include <linux/screen_info.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
 
 #include <asm/hardware/dec21285.h>
 #include <asm/mach-types.h>
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 818014e09f4a..b97f529e58e8 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -14,6 +14,7 @@
 #include <linux/list.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
  
 #include <asm/pgtable.h>
 #include <asm/page.h>
@@ -27,12 +28,17 @@
 
 #include "common.h"
 
-extern void __init isa_init_irq(unsigned int irq);
-
 unsigned int mem_fclk_21285 = 50000000;
 
 EXPORT_SYMBOL(mem_fclk_21285);
 
+static void __init early_fclk(char **arg)
+{
+	mem_fclk_21285 = simple_strtoul(*arg, arg, 0);
+}
+
+__early_param("mem_fclk_21285=", early_fclk);
+
 static int __init parse_tag_memclk(const struct tag *tag)
 {
 	mem_fclk_21285 = tag->u.memclk.fmemclk;
diff --git a/arch/arm/mach-footbridge/common.h b/arch/arm/mach-footbridge/common.h
index 580e31bbc711..b05e662d21ad 100644
--- a/arch/arm/mach-footbridge/common.h
+++ b/arch/arm/mach-footbridge/common.h
@@ -7,3 +7,4 @@ extern void isa_rtc_init(void);
 extern void footbridge_map_io(void);
 extern void footbridge_init_irq(void);
 
+extern void isa_init_irq(unsigned int irq);
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index b2a21189dd81..da35bc5c5ccc 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -7,6 +7,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/spinlock.h>
 
 #include <asm/irq.h>
 
diff --git a/arch/arm/mach-footbridge/dc21285.c b/arch/arm/mach-footbridge/dc21285.c
index d4c1e526f59c..3ffa54841ec5 100644
--- a/arch/arm/mach-footbridge/dc21285.c
+++ b/arch/arm/mach-footbridge/dc21285.c
@@ -17,6 +17,7 @@
 #include <linux/ioport.h>
 #include <linux/irq.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
 
 #include <asm/irq.h>
 #include <asm/system.h>
@@ -286,6 +287,9 @@ struct pci_bus * __init dc21285_scan_bus(int nr, struct pci_sys_data *sys)
 	return pci_scan_bus(0, &dc21285_ops, sys);
 }
 
+#define dc21285_request_irq(_a, _b, _c, _d, _e) \
+	WARN_ON(request_irq(_a, _b, _c, _d, _e) < 0)
+
 void __init dc21285_preinit(void)
 {
 	unsigned int mem_size, mem_mask;
@@ -334,16 +338,16 @@ void __init dc21285_preinit(void)
 	/*
 	 * We don't care if these fail.
 	 */
-	request_irq(IRQ_PCI_SERR, dc21285_serr_irq, IRQF_DISABLED,
-		    "PCI system error", &serr_timer);
-	request_irq(IRQ_PCI_PERR, dc21285_parity_irq, IRQF_DISABLED,
-		    "PCI parity error", &perr_timer);
-	request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, IRQF_DISABLED,
-		    "PCI abort", NULL);
-	request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, IRQF_DISABLED,
-		    "Discard timer", NULL);
-	request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, IRQF_DISABLED,
-		    "PCI data parity", NULL);
+	dc21285_request_irq(IRQ_PCI_SERR, dc21285_serr_irq, IRQF_DISABLED,
+			    "PCI system error", &serr_timer);
+	dc21285_request_irq(IRQ_PCI_PERR, dc21285_parity_irq, IRQF_DISABLED,
+			    "PCI parity error", &perr_timer);
+	dc21285_request_irq(IRQ_PCI_ABORT, dc21285_abort_irq, IRQF_DISABLED,
+			    "PCI abort", NULL);
+	dc21285_request_irq(IRQ_DISCARD_TIMER, dc21285_discard_irq, IRQF_DISABLED,
+			    "Discard timer", NULL);
+	dc21285_request_irq(IRQ_PCI_DPERR, dc21285_dparity_irq, IRQF_DISABLED,
+			    "PCI data parity", NULL);
 
 	if (cfn_mode) {
 		static struct resource csrio;
diff --git a/arch/arm/mach-footbridge/dma.c b/arch/arm/mach-footbridge/dma.c
index b653e9cfa3f7..4f3506346969 100644
--- a/arch/arm/mach-footbridge/dma.c
+++ b/arch/arm/mach-footbridge/dma.c
@@ -12,6 +12,7 @@
  */
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
 
 #include <asm/dma.h>
 #include <asm/scatterlist.h>
diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c
index b1d3bf20a41e..30040fd588cc 100644
--- a/arch/arm/mach-footbridge/ebsa285.c
+++ b/arch/arm/mach-footbridge/ebsa285.c
@@ -4,6 +4,7 @@
  * EBSA285 machine fixup
  */
 #include <linux/init.h>
+#include <linux/spinlock.h>
 
 #include <asm/hardware/dec21285.h>
 #include <asm/mach-types.h>
diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h
index ffaea90486f9..51dd902043ad 100644
--- a/arch/arm/mach-footbridge/include/mach/hardware.h
+++ b/arch/arm/mach-footbridge/include/mach/hardware.h
@@ -12,8 +12,6 @@
 #ifndef __ASM_ARCH_HARDWARE_H
 #define __ASM_ARCH_HARDWARE_H
 
-#include <mach/memory.h>
-
 /*   Virtual      Physical	Size
  * 0xff800000	0x40000000	1MB	X-Bus
  * 0xff000000	0x7c000000	1MB	PCI I/O space
@@ -28,9 +26,6 @@
 #define XBUS_SIZE		0x00100000
 #define XBUS_BASE		0xff800000
 
-#define PCIO_SIZE		0x00100000
-#define PCIO_BASE		0xff000000
-
 #define ARMCSR_SIZE		0x00100000
 #define ARMCSR_BASE		0xfe000000
 
@@ -91,10 +86,11 @@
 #define CPLD_FLASH_WR_ENABLE	1
 
 #ifndef __ASSEMBLY__
-extern void gpio_modify_op(int mask, int set);
-extern void gpio_modify_io(int mask, int in);
-extern int  gpio_read(void);
-extern void cpld_modify(int mask, int set);
+extern spinlock_t nw_gpio_lock;
+extern void nw_gpio_modify_op(unsigned int mask, unsigned int set);
+extern void nw_gpio_modify_io(unsigned int mask, unsigned int in);
+extern unsigned int nw_gpio_read(void);
+extern void nw_cpld_modify(unsigned int mask, unsigned int set);
 #endif
 
 #define pcibios_assign_all_busses()	1
diff --git a/arch/arm/mach-footbridge/include/mach/io.h b/arch/arm/mach-footbridge/include/mach/io.h
index a7b066239996..101a4fe90bde 100644
--- a/arch/arm/mach-footbridge/include/mach/io.h
+++ b/arch/arm/mach-footbridge/include/mach/io.h
@@ -14,7 +14,8 @@
 #ifndef __ASM_ARM_ARCH_IO_H
 #define __ASM_ARM_ARCH_IO_H
 
-#include <mach/hardware.h>
+#define PCIO_SIZE		0x00100000
+#define PCIO_BASE		0xff000000
 
 #define IO_SPACE_LIMIT 0xffff
 
diff --git a/arch/arm/mach-footbridge/include/mach/dma.h b/arch/arm/mach-footbridge/include/mach/isa-dma.h
index 62afd213effb..5bd4a0d338a8 100644
--- a/arch/arm/mach-footbridge/include/mach/dma.h
+++ b/arch/arm/mach-footbridge/include/mach/isa-dma.h
@@ -1,5 +1,5 @@
 /*
- *  arch/arm/mach-footbridge/include/mach/dma.h
+ *  arch/arm/mach-footbridge/include/mach/isa-dma.h
  *
  *  Architecture DMA routines
  *
diff --git a/arch/arm/mach-footbridge/include/mach/memory.h b/arch/arm/mach-footbridge/include/mach/memory.h
index 6ae2f1a07ab9..cb16e59d87b6 100644
--- a/arch/arm/mach-footbridge/include/mach/memory.h
+++ b/arch/arm/mach-footbridge/include/mach/memory.h
@@ -30,9 +30,18 @@
 extern unsigned long __virt_to_bus(unsigned long);
 extern unsigned long __bus_to_virt(unsigned long);
 #endif
+#define __virt_to_bus	__virt_to_bus
+#define __bus_to_virt	__bus_to_virt
 
 #elif defined(CONFIG_FOOTBRIDGE_HOST)
 
+/*
+ * The footbridge is programmed to expose the system RAM at the corresponding
+ * address.  So, if PAGE_OFFSET is 0xc0000000, RAM appears at 0xe0000000.
+ * If 0x80000000, then its exposed at 0xa0000000 on the bus. etc.
+ * The only requirement is that the RAM isn't placed at bus address 0 which
+ * would clash with VGA cards.
+ */
 #define __virt_to_bus(x)	((x) - 0xe0000000)
 #define __bus_to_virt(x)	((x) + 0xe0000000)
 
diff --git a/arch/arm/mach-footbridge/isa-irq.c b/arch/arm/mach-footbridge/isa-irq.c
index 54fec9ae28b9..8bfd06aeb64d 100644
--- a/arch/arm/mach-footbridge/isa-irq.c
+++ b/arch/arm/mach-footbridge/isa-irq.c
@@ -19,6 +19,7 @@
 #include <linux/list.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
 
 #include <asm/mach/irq.h>
 
@@ -27,6 +28,8 @@
 #include <asm/irq.h>
 #include <asm/mach-types.h>
 
+#include "common.h"
+
 static void isa_mask_pic_lo_irq(unsigned int irq)
 {
 	unsigned int mask = 1 << (irq & 7);
diff --git a/arch/arm/mach-footbridge/netwinder-hw.c b/arch/arm/mach-footbridge/netwinder-hw.c
index 00b0ddcac283..ac7ffa6fc413 100644
--- a/arch/arm/mach-footbridge/netwinder-hw.c
+++ b/arch/arm/mach-footbridge/netwinder-hw.c
@@ -11,6 +11,7 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/spinlock.h>
 
 #include <asm/hardware/dec21285.h>
 #include <asm/leds.h>
@@ -67,13 +68,14 @@ static inline void wb977_ww(int reg, int val)
 /*
  * This is a lock for accessing ports GP1_IO_BASE and GP2_IO_BASE
  */
-DEFINE_SPINLOCK(gpio_lock);
+DEFINE_SPINLOCK(nw_gpio_lock);
+EXPORT_SYMBOL(nw_gpio_lock);
 
 static unsigned int current_gpio_op;
 static unsigned int current_gpio_io;
 static unsigned int current_cpld;
 
-void gpio_modify_op(int mask, int set)
+void nw_gpio_modify_op(unsigned int mask, unsigned int set)
 {
 	unsigned int new_gpio, changed;
 
@@ -86,6 +88,7 @@ void gpio_modify_op(int mask, int set)
 	if (changed & 0xff00)
 		outb(new_gpio >> 8, GP2_IO_BASE);
 }
+EXPORT_SYMBOL(nw_gpio_modify_op);
 
 static inline void __gpio_modify_io(int mask, int in)
 {
@@ -118,7 +121,7 @@ static inline void __gpio_modify_io(int mask, int in)
 	}
 }
 
-void gpio_modify_io(int mask, int in)
+void nw_gpio_modify_io(unsigned int mask, unsigned int in)
 {
 	/* Open up the SuperIO chip */
 	wb977_open();
@@ -128,11 +131,13 @@ void gpio_modify_io(int mask, int in)
 	/* Close up the EFER gate */
 	wb977_close();
 }
+EXPORT_SYMBOL(nw_gpio_modify_io);
 
-int gpio_read(void)
+unsigned int nw_gpio_read(void)
 {
 	return inb(GP1_IO_BASE) | inb(GP2_IO_BASE) << 8;
 }
+EXPORT_SYMBOL(nw_gpio_read);
 
 /*
  * Initialise the Winbond W83977F global registers
@@ -322,9 +327,9 @@ static inline void wb977_init_gpio(void)
 	/*
 	 * Set Group1/Group2 outputs
 	 */
-	spin_lock_irqsave(&gpio_lock, flags);
-	gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN);
-	spin_unlock_irqrestore(&gpio_lock, flags);
+	spin_lock_irqsave(&nw_gpio_lock, flags);
+	nw_gpio_modify_op(-1, GPIO_RED_LED | GPIO_FAN);
+	spin_unlock_irqrestore(&nw_gpio_lock, flags);
 }
 
 /*
@@ -359,34 +364,35 @@ static void __init wb977_init(void)
 	wb977_close();
 }
 
-void cpld_modify(int mask, int set)
+void nw_cpld_modify(unsigned int mask, unsigned int set)
 {
 	int msk;
 
 	current_cpld = (current_cpld & ~mask) | set;
 
-	gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0);
-	gpio_modify_op(GPIO_IOLOAD, 0);
+	nw_gpio_modify_io(GPIO_DATA | GPIO_IOCLK | GPIO_IOLOAD, 0);
+	nw_gpio_modify_op(GPIO_IOLOAD, 0);
 
 	for (msk = 8; msk; msk >>= 1) {
 		int bit = current_cpld & msk;
 
-		gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0);
-		gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK);
+		nw_gpio_modify_op(GPIO_DATA | GPIO_IOCLK, bit ? GPIO_DATA : 0);
+		nw_gpio_modify_op(GPIO_IOCLK, GPIO_IOCLK);
 	}
 
-	gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0);
-	gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK);
-	gpio_modify_op(GPIO_IOLOAD, 0);
+	nw_gpio_modify_op(GPIO_IOCLK|GPIO_DATA, 0);
+	nw_gpio_modify_op(GPIO_IOLOAD|GPIO_DSCLK, GPIO_IOLOAD|GPIO_DSCLK);
+	nw_gpio_modify_op(GPIO_IOLOAD, 0);
 }
+EXPORT_SYMBOL(nw_cpld_modify);
 
 static void __init cpld_init(void)
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&gpio_lock, flags);
-	cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE);
-	spin_unlock_irqrestore(&gpio_lock, flags);
+	spin_lock_irqsave(&nw_gpio_lock, flags);
+	nw_cpld_modify(-1, CPLD_UNMUTE | CPLD_7111_DISABLE);
+	spin_unlock_irqrestore(&nw_gpio_lock, flags);
 }
 
 static unsigned char rwa_unlock[] __initdata =
@@ -596,12 +602,6 @@ static void __init rwa010_init(void)
 	rwa010_soundblaster_reset();
 }
 
-EXPORT_SYMBOL(gpio_lock);
-EXPORT_SYMBOL(gpio_modify_op);
-EXPORT_SYMBOL(gpio_modify_io);
-EXPORT_SYMBOL(cpld_modify);
-EXPORT_SYMBOL(gpio_read);
-
 /*
  * Initialise any other hardware after we've got the PCI bus
  * initialised.  We may need the PCI bus to talk to this other
@@ -616,9 +616,9 @@ static int __init nw_hw_init(void)
 		cpld_init();
 		rwa010_init();
 
-		spin_lock_irqsave(&gpio_lock, flags);
-		gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);
-		spin_unlock_irqrestore(&gpio_lock, flags);
+		spin_lock_irqsave(&nw_gpio_lock, flags);
+		nw_gpio_modify_op(GPIO_RED_LED|GPIO_GREEN_LED, DEFAULT_LEDS);
+		spin_unlock_irqrestore(&nw_gpio_lock, flags);
 	}
 	return 0;
 }
diff --git a/arch/arm/mach-footbridge/netwinder-leds.c b/arch/arm/mach-footbridge/netwinder-leds.c
index d91a4f4a32dc..00269fe0be8a 100644
--- a/arch/arm/mach-footbridge/netwinder-leds.c
+++ b/arch/arm/mach-footbridge/netwinder-leds.c
@@ -32,7 +32,6 @@ static char led_state;
 static char hw_led_state;
 
 static DEFINE_SPINLOCK(leds_lock);
-extern spinlock_t gpio_lock;
 
 static void netwinder_leds_event(led_event_t evt)
 {
@@ -121,9 +120,9 @@ static void netwinder_leds_event(led_event_t evt)
 	spin_unlock_irqrestore(&leds_lock, flags);
 
 	if  (led_state & LED_STATE_ENABLED) {
-		spin_lock_irqsave(&gpio_lock, flags);
-		gpio_modify_op(GPIO_RED_LED | GPIO_GREEN_LED, hw_led_state);
-		spin_unlock_irqrestore(&gpio_lock, flags);
+		spin_lock_irqsave(&nw_gpio_lock, flags);
+		nw_gpio_modify_op(GPIO_RED_LED | GPIO_GREEN_LED, hw_led_state);
+		spin_unlock_irqrestore(&nw_gpio_lock, flags);
 	}
 }
 
diff --git a/arch/arm/mach-footbridge/personal.c b/arch/arm/mach-footbridge/personal.c
index c4f843fc099d..e2c9f0690b16 100644
--- a/arch/arm/mach-footbridge/personal.c
+++ b/arch/arm/mach-footbridge/personal.c
@@ -4,6 +4,7 @@
  * Personal server (Skiff) machine fixup
  */
 #include <linux/init.h>
+#include <linux/spinlock.h>
 
 #include <asm/hardware/dec21285.h>
 #include <asm/mach-types.h>