[ARM] 3711/1: AT91 timer update

Patch from Andrew Victor

The AIC interrupt controller is the same on the Atmel AT91RM9200,
AT91SAM9261 and AT91SAM9260 processors.

This patch removes any RM9200-specific naming from the IRQ driver, and
moves the AT91RM9200's default IRQ priority table into at91rm9200.c.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-at91rm9200/at91rm9200.c

@@ -107,3 +107,48 @@ void __init at91rm9200_map_io(void)
 	iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
 }
 
+/*
+ * The default interrupt priority levels (0 = lowest, 7 = highest).
+ */
+static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
+	7,	/* Advanced Interrupt Controller (FIQ) */
+	7,	/* System Peripherals */
+	0,	/* Parallel IO Controller A */
+	0,	/* Parallel IO Controller B */
+	0,	/* Parallel IO Controller C */
+	0,	/* Parallel IO Controller D */
+	6,	/* USART 0 */
+	6,	/* USART 1 */
+	6,	/* USART 2 */
+	6,	/* USART 3 */
+	0,	/* Multimedia Card Interface */
+	4,	/* USB Device Port */
+	0,	/* Two-Wire Interface */
+	6,	/* Serial Peripheral Interface */
+	5,	/* Serial Synchronous Controller 0 */
+	5,	/* Serial Synchronous Controller 1 */
+	5,	/* Serial Synchronous Controller 2 */
+	0,	/* Timer Counter 0 */
+	0,	/* Timer Counter 1 */
+	0,	/* Timer Counter 2 */
+	0,	/* Timer Counter 3 */
+	0,	/* Timer Counter 4 */
+	0,	/* Timer Counter 5 */
+	3,	/* USB Host port */
+	3,	/* Ethernet MAC */
+	0,	/* Advanced Interrupt Controller (IRQ0) */
+	0,	/* Advanced Interrupt Controller (IRQ1) */
+	0,	/* Advanced Interrupt Controller (IRQ2) */
+	0,	/* Advanced Interrupt Controller (IRQ3) */
+	0,	/* Advanced Interrupt Controller (IRQ4) */
+	0,	/* Advanced Interrupt Controller (IRQ5) */
+	0	/* Advanced Interrupt Controller (IRQ6) */
+};
+
+void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
+{
+	if (!priority)
+		priority = at91rm9200_default_irq_priority;
+
+	at91_aic_init(priority);
+}

arch/arm/mach-at91rm9200/generic.h

@@ -8,13 +8,19 @@
  * published by the Free Software Foundation.
  */
 
-void at91_gpio_irq_setup(unsigned banks);
+ /* Interrupts */
+extern void __init at91rm9200_init_irq(unsigned int priority[]);
+extern void __init at91_aic_init(unsigned int priority[]);
+extern void __init at91_gpio_irq_setup(unsigned banks);
 
+ /* Timer */
 struct sys_timer;
 extern struct sys_timer at91rm9200_timer;
 
+ /* Memory Map */
 extern void __init at91rm9200_map_io(void);
 
+ /* Clocks */
 extern int __init at91_clock_init(unsigned long main_clock);
 struct device;
 extern void __init at91_clock_associate(const char *id, struct device *dev, const char *func);

arch/arm/mach-at91rm9200/irq.c

@@ -36,58 +36,20 @@
 
 #include "generic.h"
 
-/*
- * The default interrupt priority levels (0 = lowest, 7 = highest).
- */
-static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
-	7,	/* Advanced Interrupt Controller */
-	7,	/* System Peripheral */
-	0,	/* Parallel IO Controller A */
-	0,	/* Parallel IO Controller B */
-	0,	/* Parallel IO Controller C */
-	0,	/* Parallel IO Controller D */
-	6,	/* USART 0 */
-	6,	/* USART 1 */
-	6,	/* USART 2 */
-	6,	/* USART 3 */
-	0,	/* Multimedia Card Interface */
-	4,	/* USB Device Port */
-	0,	/* Two-Wire Interface */
-	6,	/* Serial Peripheral Interface */
-	5,	/* Serial Synchronous Controller */
-	5,	/* Serial Synchronous Controller */
-	5,	/* Serial Synchronous Controller */
-	0,	/* Timer Counter 0 */
-	0,	/* Timer Counter 1 */
-	0,	/* Timer Counter 2 */
-	0,	/* Timer Counter 3 */
-	0,	/* Timer Counter 4 */
-	0,	/* Timer Counter 5 */
-	3,	/* USB Host port */
-	3,	/* Ethernet MAC */
-	0,	/* Advanced Interrupt Controller */
-	0,	/* Advanced Interrupt Controller */
-	0,	/* Advanced Interrupt Controller */
-	0,	/* Advanced Interrupt Controller */
-	0,	/* Advanced Interrupt Controller */
-	0,	/* Advanced Interrupt Controller */
-	0	/* Advanced Interrupt Controller */
-};
 
-
-static void at91rm9200_mask_irq(unsigned int irq)
+static void at91_aic_mask_irq(unsigned int irq)
 {
 	/* Disable interrupt on AIC */
 	at91_sys_write(AT91_AIC_IDCR, 1 << irq);
 }
 
-static void at91rm9200_unmask_irq(unsigned int irq)
+static void at91_aic_unmask_irq(unsigned int irq)
 {
 	/* Enable interrupt on AIC */
 	at91_sys_write(AT91_AIC_IECR, 1 << irq);
 }
 
-static int at91rm9200_irq_type(unsigned irq, unsigned type)
+static int at91_aic_set_type(unsigned irq, unsigned type)
 {
 	unsigned int smr, srctype;
 
@@ -122,7 +84,7 @@ static int at91rm9200_irq_type(unsigned irq, unsigned type)
 static u32 wakeups;
 static u32 backups;
 
-static int at91rm9200_irq_set_wake(unsigned irq, unsigned value)
+static int at91_aic_set_wake(unsigned irq, unsigned value)
 {
 	if (unlikely(irq >= 32))
 		return -EINVAL;
@@ -149,28 +111,24 @@ void at91_irq_resume(void)
 }
 
 #else
-#define at91rm9200_irq_set_wake	NULL
+#define at91_aic_set_wake	NULL
 #endif
 
-static struct irqchip at91rm9200_irq_chip = {
-	.ack		= at91rm9200_mask_irq,
-	.mask		= at91rm9200_mask_irq,
-	.unmask		= at91rm9200_unmask_irq,
-	.set_type	= at91rm9200_irq_type,
-	.set_wake	= at91rm9200_irq_set_wake,
+static struct irqchip at91_aic_chip = {
+	.ack		= at91_aic_mask_irq,
+	.mask		= at91_aic_mask_irq,
+	.unmask		= at91_aic_unmask_irq,
+	.set_type	= at91_aic_set_type,
+	.set_wake	= at91_aic_set_wake,
 };
 
 /*
  * Initialize the AIC interrupt controller.
  */
-void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
+void __init at91_aic_init(unsigned int priority[NR_AIC_IRQS])
 {
 	unsigned int i;
 
-	/* No priority list specified for this board -> use defaults */
-	if (priority == NULL)
-		priority = at91rm9200_default_irq_priority;
-
 	/*
 	 * The IVR is used by macro get_irqnr_and_base to read and verify.
 	 * The irq number is NR_AIC_IRQS when a spurious interrupt has occurred.
@@ -178,10 +136,10 @@ void __init at91rm9200_init_irq(unsigned int priority[NR_AIC_IRQS])
 	for (i = 0; i < NR_AIC_IRQS; i++) {
 		/* Put irq number in Source Vector Register: */
 		at91_sys_write(AT91_AIC_SVR(i), i);
-		/* Store the Source Mode Register as defined in table above */
+		/* Active Low interrupt, with the specified priority */
 		at91_sys_write(AT91_AIC_SMR(i), AT91_AIC_SRCTYPE_LOW | priority[i]);
 
-		set_irq_chip(i, &at91rm9200_irq_chip);
+		set_irq_chip(i, &at91_aic_chip);
 		set_irq_handler(i, do_level_IRQ);
 		set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
 

include/asm-arm/arch-at91rm9200/irqs.h

@@ -39,12 +39,4 @@
  */
 #define	NR_IRQS		(NR_AIC_IRQS + (4 * 32))
 
-
-#ifndef __ASSEMBLY__
-/*
- * Initialize the IRQ controller.
- */
-extern void at91rm9200_init_irq(unsigned int priority[]);
-#endif
-
 #endif