Skip to content

Commit

Permalink
[ARM] 3711/1: AT91 timer update
Browse files Browse the repository at this point in the history 
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>
  • Loading branch information
Andrew Victor authored and Russell King committed Jul 5, 2006
1 parent 5904a7f commit ba854e1
Show file tree
Hide file tree
Showing 4 changed files with 66 additions and 65 deletions.
45 changes: 45 additions & 0 deletions arch/arm/mach-at91rm9200/at91rm9200.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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);
}
8 changes: 7 additions & 1 deletion arch/arm/mach-at91rm9200/generic.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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);
Expand Down
70 changes: 14 additions & 56 deletions arch/arm/mach-at91rm9200/irq.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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;

Expand Down Expand Up @@ -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;
Expand All @@ -149,39 +111,35 @@ 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.
*/
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);

Expand Down
8 changes: 0 additions & 8 deletions include/asm-arm/arch-at91rm9200/irqs.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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

0 comments on commit ba854e1

Please sign in to comment.