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[ARM] 5591/1: Add group irq enable/disable for w90p910 platform.

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Add group irq enable/disable for w90p910 platform.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
wanzongshun 2009-07-04 12:26:33 +01:00 committed by Russell King
parent 28d0325ce6
commit 19c0a7286f
1 changed files with 146 additions and 8 deletions
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154
arch/arm/mach-w90x900/irq.c
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@ -10,8 +10,7 @@
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* the Free Software Foundation;version 2 of the License.
*
*/
@ -29,9 +28,114 @@
#include <mach/hardware.h>
#include <mach/regs-irq.h>
struct group_irq {
unsigned long gpen;
unsigned int enabled;
void (*enable)(struct group_irq *, int enable);
};
static DEFINE_SPINLOCK(groupirq_lock);
#define DEFINE_GROUP(_name, _ctrlbit, _num) \
struct group_irq group_##_name = { \
.enable = w90x900_group_enable, \
.gpen = ((2 ^ _num) - 1) << _ctrlbit, \
}
static void w90x900_group_enable(struct group_irq *gpirq, int enable);
static DEFINE_GROUP(nirq0, 0, 4);
static DEFINE_GROUP(nirq1, 4, 4);
static DEFINE_GROUP(usbh, 8, 2);
static DEFINE_GROUP(ottimer, 16, 3);
static DEFINE_GROUP(gdma, 20, 2);
static DEFINE_GROUP(sc, 24, 2);
static DEFINE_GROUP(i2c, 26, 2);
static DEFINE_GROUP(ps2, 28, 2);
static int group_irq_enable(struct group_irq *group_irq)
{
unsigned long flags;
spin_lock_irqsave(&groupirq_lock, flags);
if (group_irq->enabled++ == 0)
(group_irq->enable)(group_irq, 1);
spin_unlock_irqrestore(&groupirq_lock, flags);
return 0;
}
static void group_irq_disable(struct group_irq *group_irq)
{
unsigned long flags;
WARN_ON(group_irq->enabled == 0);
spin_lock_irqsave(&groupirq_lock, flags);
if (--group_irq->enabled == 0)
(group_irq->enable)(group_irq, 0);
spin_unlock_irqrestore(&groupirq_lock, flags);
}
static void w90x900_group_enable(struct group_irq *gpirq, int enable)
{
unsigned int groupen = gpirq->gpen;
unsigned long regval;
regval = __raw_readl(REG_AIC_GEN);
if (enable)
regval |= groupen;
else
regval &= ~groupen;
__raw_writel(regval, REG_AIC_GEN);
}
static void w90x900_irq_mask(unsigned int irq)
{
struct group_irq *group_irq;
group_irq = NULL;
__raw_writel(1 << irq, REG_AIC_MDCR);
switch (irq) {
case IRQ_GROUP0:
group_irq = &group_nirq0;
break;
case IRQ_GROUP1:
group_irq = &group_nirq1;
break;
case IRQ_USBH:
group_irq = &group_usbh;
break;
case IRQ_T_INT_GROUP:
group_irq = &group_ottimer;
break;
case IRQ_GDMAGROUP:
group_irq = &group_gdma;
break;
case IRQ_SCGROUP:
group_irq = &group_sc;
break;
case IRQ_I2CGROUP:
group_irq = &group_i2c;
break;
case IRQ_P2SGROUP:
group_irq = &group_ps2;
break;
}
if (group_irq)
group_irq_disable(group_irq);
}
/*
@ -46,14 +150,48 @@ static void w90x900_irq_ack(unsigned int irq)
static void w90x900_irq_unmask(unsigned int irq)
{
unsigned long mask;
struct group_irq *group_irq;
group_irq = NULL;
if (irq == IRQ_T_INT_GROUP) {
mask = __raw_readl(REG_AIC_GEN);
__raw_writel(TIME_GROUP_IRQ | mask, REG_AIC_GEN);
__raw_writel(1 << IRQ_T_INT_GROUP, REG_AIC_MECR);
}
__raw_writel(1 << irq, REG_AIC_MECR);
switch (irq) {
case IRQ_GROUP0:
group_irq = &group_nirq0;
break;
case IRQ_GROUP1:
group_irq = &group_nirq1;
break;
case IRQ_USBH:
group_irq = &group_usbh;
break;
case IRQ_T_INT_GROUP:
group_irq = &group_ottimer;
break;
case IRQ_GDMAGROUP:
group_irq = &group_gdma;
break;
case IRQ_SCGROUP:
group_irq = &group_sc;
break;
case IRQ_I2CGROUP:
group_irq = &group_i2c;
break;
case IRQ_P2SGROUP:
group_irq = &group_ps2;
break;
}
if (group_irq)
group_irq_enable(group_irq);
}
static struct irq_chip w90x900_irq_chip = {