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irqs.h
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1 /* linux/arch/arm/plat-samsung/include/plat/irqs.h
2  *
3  * Copyright (c) 2009 Samsung Electronics Co., Ltd.
4  * http://www.samsung.com/
5  *
6  * S5P Common IRQ support
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11 */
12 
13 #ifndef __PLAT_SAMSUNG_IRQS_H
14 #define __PLAT_SAMSUNG_IRQS_H __FILE__
15 
16 /* we keep the first set of CPU IRQs out of the range of
17  * the ISA space, so that the PC104 has them to itself
18  * and we don't end up having to do horrible things to the
19  * standard ISA drivers....
20  *
21  * note, since we're using the VICs, our start must be a
22  * mulitple of 32 to allow the common code to work
23  */
24 
25 #define S5P_IRQ_OFFSET (32)
26 
27 #define S5P_IRQ(x) ((x) + S5P_IRQ_OFFSET)
28 
29 #define S5P_VIC0_BASE S5P_IRQ(0)
30 #define S5P_VIC1_BASE S5P_IRQ(32)
31 #define S5P_VIC2_BASE S5P_IRQ(64)
32 #define S5P_VIC3_BASE S5P_IRQ(96)
33 
34 #define VIC_BASE(x) (S5P_VIC0_BASE + ((x)*32))
35 
36 #define IRQ_VIC0_BASE S5P_VIC0_BASE
37 #define IRQ_VIC1_BASE S5P_VIC1_BASE
38 #define IRQ_VIC2_BASE S5P_VIC2_BASE
39 
40 /* VIC based IRQs */
41 
42 #define S5P_IRQ_VIC0(x) (S5P_VIC0_BASE + (x))
43 #define S5P_IRQ_VIC1(x) (S5P_VIC1_BASE + (x))
44 #define S5P_IRQ_VIC2(x) (S5P_VIC2_BASE + (x))
45 #define S5P_IRQ_VIC3(x) (S5P_VIC3_BASE + (x))
46 
47 #define S5P_TIMER_IRQ(x) (IRQ_TIMER_BASE + (x))
48 
49 #define IRQ_TIMER0 S5P_TIMER_IRQ(0)
50 #define IRQ_TIMER1 S5P_TIMER_IRQ(1)
51 #define IRQ_TIMER2 S5P_TIMER_IRQ(2)
52 #define IRQ_TIMER3 S5P_TIMER_IRQ(3)
53 #define IRQ_TIMER4 S5P_TIMER_IRQ(4)
54 #define IRQ_TIMER_COUNT (5)
55 
56 #define IRQ_EINT(x) ((x) < 16 ? ((x) + S5P_EINT_BASE1) \
57  : ((x) - 16 + S5P_EINT_BASE2))
58 
59 #define EINT_OFFSET(irq) ((irq) < S5P_EINT_BASE2 ? \
60  ((irq) - S5P_EINT_BASE1) : \
61  ((irq) + 16 - S5P_EINT_BASE2))
62 
63 #define IRQ_EINT_BIT(x) EINT_OFFSET(x)
64 
65 /* Typically only a few gpio chips require gpio interrupt support.
66  To avoid memory waste irq descriptors are allocated only for
67  S5P_GPIOINT_GROUP_COUNT chips, each with total number of
68  S5P_GPIOINT_GROUP_SIZE pins/irqs. Each GPIOINT group can be assiged
69  to any gpio chip with the s5p_register_gpio_interrupt() function */
70 #define S5P_GPIOINT_GROUP_COUNT 4
71 #define S5P_GPIOINT_GROUP_SIZE 8
72 #define S5P_GPIOINT_COUNT (S5P_GPIOINT_GROUP_COUNT * S5P_GPIOINT_GROUP_SIZE)
73 
74 /* IRQ types common for all s5p platforms */
75 #define S5P_IRQ_TYPE_LEVEL_LOW (0x00)
76 #define S5P_IRQ_TYPE_LEVEL_HIGH (0x01)
77 #define S5P_IRQ_TYPE_EDGE_FALLING (0x02)
78 #define S5P_IRQ_TYPE_EDGE_RISING (0x03)
79 #define S5P_IRQ_TYPE_EDGE_BOTH (0x04)
80 
81 #endif /* __PLAT_SAMSUNG_IRQS_H */