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review.evervolv.com / android_kernel_lge_hammerhead / 9b791d4766c19ac014a7b81a551efe4a7511e12a / . / arch / m32r / kernel / setup_m32104ut.c
blob: ab16c6646093e1996099970bd0777ae40ed3902b [file] [log] [blame]
Hirokazu Takata9287d952006-01-06 00:18:41 -0800[diff] [blame]1/*
2 * linux/arch/m32r/kernel/setup_m32104ut.c
3 *
4 * Setup routines for M32104UT Board
5 *
6 * Copyright (c) 2002-2005 Hiroyuki Kondo, Hirokazu Takata,
7 * Hitoshi Yamamoto, Mamoru Sakugawa,
8 * Naoto Sugai, Hayato Fujiwara
9 */
10
11#include <linux/config.h>
12#include <linux/irq.h>
13#include <linux/kernel.h>
14#include <linux/init.h>
15#include <linux/device.h>
16
17#include <asm/system.h>
18#include <asm/m32r.h>
19#include <asm/io.h>
20
21#define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
22
23#ifndef CONFIG_SMP
24typedef struct {
25 unsigned long icucr; /* ICU Control Register */
26} icu_data_t;
27#endif /* CONFIG_SMP */
28
29icu_data_t icu_data[NR_IRQS];
30
31static void disable_m32104ut_irq(unsigned int irq)
32{
33 unsigned long port, data;
34
35 port = irq2port(irq);
36 data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
37 outl(data, port);
38}
39
40static void enable_m32104ut_irq(unsigned int irq)
41{
42 unsigned long port, data;
43
44 port = irq2port(irq);
45 data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
46 outl(data, port);
47}
48
49static void mask_and_ack_m32104ut(unsigned int irq)
50{
51 disable_m32104ut_irq(irq);
52}
53
54static void end_m32104ut_irq(unsigned int irq)
55{
56 enable_m32104ut_irq(irq);
57}
58
59static unsigned int startup_m32104ut_irq(unsigned int irq)
60{
61 enable_m32104ut_irq(irq);
62 return (0);
63}
64
65static void shutdown_m32104ut_irq(unsigned int irq)
66{
67 unsigned long port;
68
69 port = irq2port(irq);
70 outl(M32R_ICUCR_ILEVEL7, port);
71}
72
73static struct hw_interrupt_type m32104ut_irq_type =
74{
75 .typename = "M32104UT-IRQ",
76 .startup = startup_m32104ut_irq,
77 .shutdown = shutdown_m32104ut_irq,
78 .enable = enable_m32104ut_irq,
79 .disable = disable_m32104ut_irq,
80 .ack = mask_and_ack_m32104ut,
81 .end = end_m32104ut_irq
82};
83
84void __init init_IRQ(void)
85{
86 static int once = 0;
87
88 if (once)
89 return;
90 else
91 once++;
92
93#if defined(CONFIG_SMC91X)
94 /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
95 irq_desc[M32R_IRQ_INT0].status = IRQ_DISABLED;
96 irq_desc[M32R_IRQ_INT0].handler = &m32104ut_irq_type;
97 irq_desc[M32R_IRQ_INT0].action = 0;
98 irq_desc[M32R_IRQ_INT0].depth = 1;
99 icu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11; /* "H" level sense */
100 disable_m32104ut_irq(M32R_IRQ_INT0);
101#endif /* CONFIG_SMC91X */
102
103 /* MFT2 : system timer */
104 irq_desc[M32R_IRQ_MFT2].status = IRQ_DISABLED;
105 irq_desc[M32R_IRQ_MFT2].handler = &m32104ut_irq_type;
106 irq_desc[M32R_IRQ_MFT2].action = 0;
107 irq_desc[M32R_IRQ_MFT2].depth = 1;
108 icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
109 disable_m32104ut_irq(M32R_IRQ_MFT2);
110
111#ifdef CONFIG_SERIAL_M32R_SIO
112 /* SIO0_R : uart receive data */
113 irq_desc[M32R_IRQ_SIO0_R].status = IRQ_DISABLED;
114 irq_desc[M32R_IRQ_SIO0_R].handler = &m32104ut_irq_type;
115 irq_desc[M32R_IRQ_SIO0_R].action = 0;
116 irq_desc[M32R_IRQ_SIO0_R].depth = 1;
117 icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
118 disable_m32104ut_irq(M32R_IRQ_SIO0_R);
119
120 /* SIO0_S : uart send data */
121 irq_desc[M32R_IRQ_SIO0_S].status = IRQ_DISABLED;
122 irq_desc[M32R_IRQ_SIO0_S].handler = &m32104ut_irq_type;
123 irq_desc[M32R_IRQ_SIO0_S].action = 0;
124 irq_desc[M32R_IRQ_SIO0_S].depth = 1;
125 icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
126 disable_m32104ut_irq(M32R_IRQ_SIO0_S);
127#endif /* CONFIG_SERIAL_M32R_SIO */
128}
129
130#if defined(CONFIG_SMC91X)
131
132#define LAN_IOSTART 0x300
133#define LAN_IOEND 0x320
134static struct resource smc91x_resources[] = {
135 [0] = {
136 .start = (LAN_IOSTART),
137 .end = (LAN_IOEND),
138 .flags = IORESOURCE_MEM,
139 },
140 [1] = {
141 .start = M32R_IRQ_INT0,
142 .end = M32R_IRQ_INT0,
143 .flags = IORESOURCE_IRQ,
144 }
145};
146
147static struct platform_device smc91x_device = {
148 .name = "smc91x",
149 .id = 0,
150 .num_resources = ARRAY_SIZE(smc91x_resources),
151 .resource = smc91x_resources,
152};
153#endif
154
155static int __init platform_init(void)
156{
157#if defined(CONFIG_SMC91X)
158 platform_device_register(&smc91x_device);
159#endif
160 return 0;
161}
162arch_initcall(platform_init);