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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 10:09:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-11 10:09:45 -0700
commit7cc4e87f912bbefa440a51856b8d076e5d1f554a (patch)
tree1b8df8683f3de37d2e8211ffa8d151f60d59af62 /arch/arm/mach-imx/irq.c
parent5ba2f67afb02c5302b2898949ed6fc3b3d37dcf1 (diff)
parent69fc7eed5f56bce15b239e5110de2575a6970df4 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (236 commits) [ARM] 5300/1: fixup spitz reset during boot [ARM] 5295/1: make ZONE_DMA optional [ARM] 5239/1: Palm Zire 72 power management support [ARM] 5298/1: Drop desc_handle_irq() [ARM] 5297/1: [KS8695] Fix two compile-time warnings [ARM] 5296/1: [KS8695] Replace macro's with trailing underscores. [ARM] pxa: allow multi-machine PCMCIA builds [ARM] pxa: add preliminary CPUFREQ support for PXA3xx [ARM] pxa: add missing ACCR bit definitions to pxa3xx-regs.h [ARM] pxa: rename cpu-pxa.c to cpufreq-pxa2xx.c [ARM] pxa/zylonite: add support for USB OHCI [ARM] ohci-pxa27x: use ioremap() and offset for register access [ARM] ohci-pxa27x: introduce pxa27x_clear_otgph() [ARM] ohci-pxa27x: use platform_get_{irq,resource} for the resource [ARM] ohci-pxa27x: move OHCI controller specific registers into the driver [ARM] ohci-pxa27x: introduce flags to avoid direct access to OHCI registers [ARM] pxa: move I2S register and bit definitions into pxa2xx-i2s.c [ARM] pxa: simplify DMA register definitions [ARM] pxa: make additional DCSR bits valid for PXA3xx [ARM] pxa: move i2c register and bit definitions into i2c-pxa.c ... Fixed up conflicts in arch/arm/mach-versatile/core.c sound/soc/pxa/pxa2xx-ac97.c sound/soc/pxa/pxa2xx-i2s.c manually.
Diffstat (limited to 'arch/arm/mach-imx/irq.c')
-rw-r--r--arch/arm/mach-imx/irq.c38
1 files changed, 30 insertions, 8 deletions
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
index 798f221eb3b..531b95deadc 100644
--- a/arch/arm/mach-imx/irq.c
+++ b/arch/arm/mach-imx/irq.c
@@ -26,20 +26,17 @@
#include <linux/init.h>
#include <linux/list.h>
#include <linux/timer.h>
+#include <linux/io.h>
#include <mach/hardware.h>
#include <asm/irq.h>
-#include <asm/io.h>
#include <asm/mach/irq.h>
/*
*
* We simply use the ENABLE DISABLE registers inside of the IMX
- * to turn on/off specific interrupts. FIXME- We should
- * also add support for the accelerated interrupt controller
- * by putting offets to irq jump code in the appropriate
- * places.
+ * to turn on/off specific interrupts.
*
*/
@@ -102,6 +99,28 @@ imx_unmask_irq(unsigned int irq)
__raw_writel(irq, IMX_AITC_INTENNUM);
}
+#ifdef CONFIG_FIQ
+int imx_set_irq_fiq(unsigned int irq, unsigned int type)
+{
+ unsigned int irqt;
+
+ if (irq >= IMX_IRQS)
+ return -EINVAL;
+
+ if (irq < IMX_IRQS / 2) {
+ irqt = __raw_readl(IMX_AITC_INTTYPEL) & ~(1 << irq);
+ __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEL);
+ } else {
+ irq -= IMX_IRQS / 2;
+ irqt = __raw_readl(IMX_AITC_INTTYPEH) & ~(1 << irq);
+ __raw_writel(irqt | (!!type << irq), IMX_AITC_INTTYPEH);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(imx_set_irq_fiq);
+#endif /* CONFIG_FIQ */
+
static int
imx_gpio_irq_type(unsigned int _irq, unsigned int type)
{
@@ -182,14 +201,12 @@ static void
imx_gpio_handler(unsigned int mask, unsigned int irq,
struct irq_desc *desc)
{
- desc = irq_desc + irq;
while (mask) {
if (mask & 1) {
DEBUG_IRQ("handling irq %d\n", irq);
- desc_handle_irq(irq, desc);
+ generic_handle_irq(irq);
}
irq++;
- desc++;
mask >>= 1;
}
}
@@ -286,4 +303,9 @@ imx_init_irq(void)
/* Release masking of interrupts according to priority */
__raw_writel(-1, IMX_AITC_NIMASK);
+
+#ifdef CONFIG_FIQ
+ /* Initialize FIQ */
+ init_FIQ();
+#endif
}