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-rw-r--r--arch/arm/mach-imx/include/mach/entry-macro.S32
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/entry-macro.S b/arch/arm/mach-imx/include/mach/entry-macro.S
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--- /dev/null
+++ b/arch/arm/mach-imx/include/mach/entry-macro.S
@@ -0,0 +1,32 @@
+/*
+ * arch/arm/mach-imx/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for iMX-based platforms
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+#include <mach/hardware.h>
+
+ .macro disable_fiq
+ .endm
+
+ .macro get_irqnr_preamble, base, tmp
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
+
+#define AITC_NIVECSR 0x40
+ .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
+ ldr \base, =IO_ADDRESS(IMX_AITC_BASE)
+ @ Load offset & priority of the highest priority
+ @ interrupt pending.
+ ldr \irqstat, [\base, #AITC_NIVECSR]
+ @ Shift off the priority leaving the offset or
+ @ "interrupt number", use arithmetic shift to
+ @ transform illegal source (0xffff) as -1
+ mov \irqnr, \irqstat, asr #16
+ adds \tmp, \irqnr, #1
+ .endm