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authorPeter Horton <phorton@bitbox.co.uk>2010-12-06 11:37:38 +0000
committerSascha Hauer <s.hauer@pengutronix.de>2010-12-14 09:54:37 +0100
commitcdc3f10630ecddb7870e087ff9679eef3d7b4e21 (patch)
treebcffe39f52a334e9ad8e56b15843a42e228988da /arch/arm/plat-mxc/tzic.c
parent8be9252f7ccde4148e4b203bf64d38ae66b111e4 (diff)
mx51: support FIQ on TZIC, revised
Add support for FIQ on mx51 TZIC TZIC changes tested with FIQ audio on an mx51 board AVIC changes build with mx3_defconfig, not tested Signed-off-by: Peter Horton <phorton@bitbox.co.uk> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/plat-mxc/tzic.c')
-rw-r--r--arch/arm/plat-mxc/tzic.c46
1 files changed, 39 insertions, 7 deletions
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c
index 3703ab28257f..e69ed8a8c203 100644
--- a/arch/arm/plat-mxc/tzic.c
+++ b/arch/arm/plat-mxc/tzic.c
@@ -21,6 +21,8 @@
#include <mach/hardware.h>
#include <mach/common.h>
+#include "irq-common.h"
+
/*
*****************************************
* TZIC Registers *
@@ -47,6 +49,25 @@
void __iomem *tzic_base; /* Used as irq controller base in entry-macro.S */
+#ifdef CONFIG_FIQ
+static int tzic_set_irq_fiq(unsigned int irq, unsigned int type)
+{
+ unsigned int index, mask, value;
+
+ index = irq >> 5;
+ if (unlikely(index >= 4))
+ return -EINVAL;
+ mask = 1U << (irq & 0x1F);
+
+ value = __raw_readl(tzic_base + TZIC_INTSEC0(index)) | mask;
+ if (type)
+ value &= ~mask;
+ __raw_writel(value, tzic_base + TZIC_INTSEC0(index));
+
+ return 0;
+}
+#endif
+
/**
* tzic_mask_irq() - Disable interrupt number "irq" in the TZIC
*
@@ -104,12 +125,17 @@ static int tzic_set_wake_irq(unsigned int irq, unsigned int enable)
return 0;
}
-static struct irq_chip mxc_tzic_chip = {
- .name = "MXC_TZIC",
- .ack = tzic_mask_irq,
- .mask = tzic_mask_irq,
- .unmask = tzic_unmask_irq,
- .set_wake = tzic_set_wake_irq,
+static struct mxc_irq_chip mxc_tzic_chip = {
+ .base = {
+ .name = "MXC_TZIC",
+ .ack = tzic_mask_irq,
+ .mask = tzic_mask_irq,
+ .unmask = tzic_unmask_irq,
+ .set_wake = tzic_set_wake_irq,
+ },
+#ifdef CONFIG_FIQ
+ .set_irq_fiq = tzic_set_irq_fiq,
+#endif
};
/*
@@ -141,10 +167,16 @@ void __init tzic_init_irq(void __iomem *irqbase)
/* all IRQ no FIQ Warning :: No selection */
for (i = 0; i < MXC_INTERNAL_IRQS; i++) {
- set_irq_chip(i, &mxc_tzic_chip);
+ set_irq_chip(i, &mxc_tzic_chip.base);
set_irq_handler(i, handle_level_irq);
set_irq_flags(i, IRQF_VALID);
}
+
+#ifdef CONFIG_FIQ
+ /* Initialize FIQ */
+ init_FIQ();
+#endif
+
pr_info("TrustZone Interrupt Controller (TZIC) initialized\n");
}