sh: r7785rp: Fix up DECLARE_INTC_DESC() arg mismatch.
[linux-2.6.git] / arch / sh / boards / renesas / hs7751rvoip / irq.c
1 /*
2  * linux/arch/sh/boards/renesas/hs7751rvoip/irq.c
3  *
4  * Copyright (C) 2000  Kazumoto Kojima
5  *
6  * Renesas Technology Sales HS7751RVoIP Support.
7  *
8  * Modified for HS7751RVoIP by
9  * Atom Create Engineering Co., Ltd. 2002.
10  * Lineo uSolutions, Inc. 2003.
11  */
12
13 #include <linux/init.h>
14 #include <linux/irq.h>
15 #include <linux/interrupt.h>
16 #include <asm/io.h>
17 #include <asm/irq.h>
18 #include <asm/hs7751rvoip.h>
19
20 static int mask_pos[] = {8, 9, 10, 11, 12, 13, 0, 1, 2, 3, 4, 5, 6, 7};
21
22 static void enable_hs7751rvoip_irq(unsigned int irq);
23 static void disable_hs7751rvoip_irq(unsigned int irq);
24
25 /* shutdown is same as "disable" */
26 #define shutdown_hs7751rvoip_irq disable_hs7751rvoip_irq
27
28 static void ack_hs7751rvoip_irq(unsigned int irq);
29 static void end_hs7751rvoip_irq(unsigned int irq);
30
31 static unsigned int startup_hs7751rvoip_irq(unsigned int irq)
32 {
33         enable_hs7751rvoip_irq(irq);
34         return 0; /* never anything pending */
35 }
36
37 static void disable_hs7751rvoip_irq(unsigned int irq)
38 {
39         unsigned short val;
40         unsigned short mask = 0xffff ^ (0x0001 << mask_pos[irq]);
41
42         /* Set the priority in IPR to 0 */
43         val = ctrl_inw(IRLCNTR3);
44         val &= mask;
45         ctrl_outw(val, IRLCNTR3);
46 }
47
48 static void enable_hs7751rvoip_irq(unsigned int irq)
49 {
50         unsigned short val;
51         unsigned short value = (0x0001 << mask_pos[irq]);
52
53         /* Set priority in IPR back to original value */
54         val = ctrl_inw(IRLCNTR3);
55         val |= value;
56         ctrl_outw(val, IRLCNTR3);
57 }
58
59 static void ack_hs7751rvoip_irq(unsigned int irq)
60 {
61         disable_hs7751rvoip_irq(irq);
62 }
63
64 static void end_hs7751rvoip_irq(unsigned int irq)
65 {
66         if (!(irq_desc[irq].status & (IRQ_DISABLED|IRQ_INPROGRESS)))
67                 enable_hs7751rvoip_irq(irq);
68 }
69
70 static struct hw_interrupt_type hs7751rvoip_irq_type = {
71         .typename =  "HS7751RVoIP IRQ",
72         .startup = startup_hs7751rvoip_irq,
73         .shutdown = shutdown_hs7751rvoip_irq,
74         .enable = enable_hs7751rvoip_irq,
75         .disable = disable_hs7751rvoip_irq,
76         .ack = ack_hs7751rvoip_irq,
77         .end = end_hs7751rvoip_irq,
78 };
79
80 static void make_hs7751rvoip_irq(unsigned int irq)
81 {
82         disable_irq_nosync(irq);
83         irq_desc[irq].chip = &hs7751rvoip_irq_type;
84         disable_hs7751rvoip_irq(irq);
85 }
86
87 /*
88  * Initialize IRQ setting
89  */
90 void __init init_hs7751rvoip_IRQ(void)
91 {
92         int i;
93
94         /* IRL0=ON HOOK1
95          * IRL1=OFF HOOK1
96          * IRL2=ON HOOK2
97          * IRL3=OFF HOOK2
98          * IRL4=Ringing Detection
99          * IRL5=CODEC
100          * IRL6=Ethernet
101          * IRL7=Ethernet Hub
102          * IRL8=USB Communication
103          * IRL9=USB Connection
104          * IRL10=USB DMA
105          * IRL11=CF Card
106          * IRL12=PCMCIA
107          * IRL13=PCI Slot
108          */
109         ctrl_outw(0x9876, IRLCNTR1);
110         ctrl_outw(0xdcba, IRLCNTR2);
111         ctrl_outw(0x0050, IRLCNTR4);
112         ctrl_outw(0x4321, IRLCNTR5);
113
114         for (i=0; i<14; i++)
115                 make_hs7751rvoip_irq(i);
116 }