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Diffstat (limited to 'include/asm-arm/arch-s3c2410/entry-macro.S')
-rw-r--r--include/asm-arm/arch-s3c2410/entry-macro.S30
1 files changed, 7 insertions, 23 deletions
diff --git a/include/asm-arm/arch-s3c2410/entry-macro.S b/include/asm-arm/arch-s3c2410/entry-macro.S
index 894c35cf3b1e..e09a6b8ec153 100644
--- a/include/asm-arm/arch-s3c2410/entry-macro.S
+++ b/include/asm-arm/arch-s3c2410/entry-macro.S
@@ -18,8 +18,6 @@
18 18
19#define INTPND (0x10) 19#define INTPND (0x10)
20#define INTOFFSET (0x14) 20#define INTOFFSET (0x14)
21#define EXTINTPEND (0xa8)
22#define EXTINTMASK (0xa4)
23 21
24#include <asm/hardware.h> 22#include <asm/hardware.h>
25#include <asm/arch/irqs.h> 23#include <asm/arch/irqs.h>
@@ -28,37 +26,23 @@
28 26
29 mov \base, #S3C24XX_VA_IRQ 27 mov \base, #S3C24XX_VA_IRQ
30 28
31 ldr \irqstat, [ \base, #INTPND]
32 bics \irqnr, \irqstat, #3<<4 @@ only an GPIO IRQ
33 beq 2000f
34
35 @@ try the interrupt offset register, since it is there 29 @@ try the interrupt offset register, since it is there
36 30
31 ldr \irqstat, [ \base, #INTPND ]
32 teq \irqstat, #0
33 beq 1002f
37 ldr \irqnr, [ \base, #INTOFFSET ] 34 ldr \irqnr, [ \base, #INTOFFSET ]
38 mov \tmp, #1 35 mov \tmp, #1
39 tst \irqstat, \tmp, lsl \irqnr 36 tst \irqstat, \tmp, lsl \irqnr
40 addne \irqnr, \irqnr, #IRQ_EINT0
41 bne 1001f 37 bne 1001f
42 38
43 @@ the number specified is not a valid irq, so try 39 @@ the number specified is not a valid irq, so try
44 @@ and work it out for ourselves 40 @@ and work it out for ourselves
45 41
46 mov \irqnr, #IRQ_EINT0 @@ start here 42 mov \irqnr, #0 @@ start here
47 b 3000f
48
492000:
50 @@ load the GPIO interrupt register, and check it
51
52 add \tmp, \base, #S3C24XX_VA_GPIO - S3C24XX_VA_IRQ
53 ldr \irqstat, [ \tmp, # EXTINTPEND ]
54 ldr \irqnr, [ \tmp, # EXTINTMASK ]
55 bics \irqstat, \irqstat, \irqnr
56 beq 1001f
57
58 mov \irqnr, #(IRQ_EINT4 - 4)
59 43
60 @@ work out which irq (if any) we got 44 @@ work out which irq (if any) we got
613000: 45
62 movs \tmp, \irqstat, lsl#16 46 movs \tmp, \irqstat, lsl#16
63 addeq \irqnr, \irqnr, #16 47 addeq \irqnr, \irqnr, #16
64 moveq \irqstat, \irqstat, lsr#16 48 moveq \irqstat, \irqstat, lsr#16
@@ -75,9 +59,9 @@
75 addeq \irqnr, \irqnr, #1 59 addeq \irqnr, \irqnr, #1
76 60
77 @@ we have the value 61 @@ we have the value
78 movs \irqnr, \irqnr
79
801001: 621001:
63 adds \irqnr, \irqnr, #IRQ_EINT0
641002:
81 @@ exit here, Z flag unset if IRQ 65 @@ exit here, Z flag unset if IRQ
82 66
83 .endm 67 .endm