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authorwanzongshun <mcuos.com@gmail.com>2009-07-04 12:26:33 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-07-09 17:14:48 +0100
commit19c0a7286f3f0093bbbbcdce0af4c3205421b608 (patch)
tree287995a399c8deae706a537a99c222c653676c91 /arch/arm/mach-w90x900/irq.c
parent28d0325ce6e0a52f53d8af687e6427fee59004d3 (diff)
downloadlinux-2.6.34-ux500-19c0a7286f3f0093bbbbcdce0af4c3205421b608.tar.gz
[ARM] 5591/1: Add group irq enable/disable for w90p910 platform.
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>
Diffstat (limited to 'arch/arm/mach-w90x900/irq.c')
-rw-r--r--arch/arm/mach-w90x900/irq.c154
1 files changed, 146 insertions, 8 deletions
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c
index 0b4fc194729..a296c9b81d2 100644
--- a/arch/arm/mach-w90x900/irq.c
+++ b/arch/arm/mach-w90x900/irq.c
@@ -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 = {