1 /*
2 * linux/arch/m32r/platforms/m32104ut/setup.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/irq.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15
16 #include <asm/m32r.h>
17 #include <asm/io.h>
18
19 #define irq2port(x) (M32R_ICU_CR1_PORTL + ((x - 1) * sizeof(unsigned long)))
20
21 icu_data_t icu_data[NR_IRQS];
22
disable_m32104ut_irq(unsigned int irq)23 static void disable_m32104ut_irq(unsigned int irq)
24 {
25 unsigned long port, data;
26
27 port = irq2port(irq);
28 data = icu_data[irq].icucr|M32R_ICUCR_ILEVEL7;
29 outl(data, port);
30 }
31
enable_m32104ut_irq(unsigned int irq)32 static void enable_m32104ut_irq(unsigned int irq)
33 {
34 unsigned long port, data;
35
36 port = irq2port(irq);
37 data = icu_data[irq].icucr|M32R_ICUCR_IEN|M32R_ICUCR_ILEVEL6;
38 outl(data, port);
39 }
40
mask_m32104ut_irq(struct irq_data * data)41 static void mask_m32104ut_irq(struct irq_data *data)
42 {
43 disable_m32104ut_irq(data->irq);
44 }
45
unmask_m32104ut_irq(struct irq_data * data)46 static void unmask_m32104ut_irq(struct irq_data *data)
47 {
48 enable_m32104ut_irq(data->irq);
49 }
50
shutdown_m32104ut_irq(struct irq_data * data)51 static void shutdown_m32104ut_irq(struct irq_data *data)
52 {
53 unsigned int irq = data->irq;
54 unsigned long port = irq2port(irq);
55
56 outl(M32R_ICUCR_ILEVEL7, port);
57 }
58
59 static struct irq_chip m32104ut_irq_type =
60 {
61 .name = "M32104UT-IRQ",
62 .irq_shutdown = shutdown_m32104ut_irq,
63 .irq_unmask = unmask_m32104ut_irq,
64 .irq_mask = mask_m32104ut_irq,
65 };
66
init_IRQ(void)67 void __init init_IRQ(void)
68 {
69 static int once = 0;
70
71 if (once)
72 return;
73 else
74 once++;
75
76 #if defined(CONFIG_SMC91X)
77 /* INT#0: LAN controller on M32104UT-LAN (SMC91C111)*/
78 irq_set_chip_and_handler(M32R_IRQ_INT0, &m32104ut_irq_type,
79 handle_level_irq);
80 /* "H" level sense */
81 cu_data[M32R_IRQ_INT0].icucr = M32R_ICUCR_IEN | M32R_ICUCR_ISMOD11;
82 disable_m32104ut_irq(M32R_IRQ_INT0);
83 #endif /* CONFIG_SMC91X */
84
85 /* MFT2 : system timer */
86 irq_set_chip_and_handler(M32R_IRQ_MFT2, &m32104ut_irq_type,
87 handle_level_irq);
88 icu_data[M32R_IRQ_MFT2].icucr = M32R_ICUCR_IEN;
89 disable_m32104ut_irq(M32R_IRQ_MFT2);
90
91 #ifdef CONFIG_SERIAL_M32R_SIO
92 /* SIO0_R : uart receive data */
93 irq_set_chip_and_handler(M32R_IRQ_SIO0_R, &m32104ut_irq_type,
94 handle_level_irq);
95 icu_data[M32R_IRQ_SIO0_R].icucr = M32R_ICUCR_IEN;
96 disable_m32104ut_irq(M32R_IRQ_SIO0_R);
97
98 /* SIO0_S : uart send data */
99 irq_set_chip_and_handler(M32R_IRQ_SIO0_S, &m32104ut_irq_type,
100 handle_level_irq);
101 icu_data[M32R_IRQ_SIO0_S].icucr = M32R_ICUCR_IEN;
102 disable_m32104ut_irq(M32R_IRQ_SIO0_S);
103 #endif /* CONFIG_SERIAL_M32R_SIO */
104 }
105
106 #if defined(CONFIG_SMC91X)
107
108 #define LAN_IOSTART 0x300
109 #define LAN_IOEND 0x320
110 static struct resource smc91x_resources[] = {
111 [0] = {
112 .start = (LAN_IOSTART),
113 .end = (LAN_IOEND),
114 .flags = IORESOURCE_MEM,
115 },
116 [1] = {
117 .start = M32R_IRQ_INT0,
118 .end = M32R_IRQ_INT0,
119 .flags = IORESOURCE_IRQ,
120 }
121 };
122
123 static struct platform_device smc91x_device = {
124 .name = "smc91x",
125 .id = 0,
126 .num_resources = ARRAY_SIZE(smc91x_resources),
127 .resource = smc91x_resources,
128 };
129 #endif
130
platform_init(void)131 static int __init platform_init(void)
132 {
133 #if defined(CONFIG_SMC91X)
134 platform_device_register(&smc91x_device);
135 #endif
136 return 0;
137 }
138 arch_initcall(platform_init);
139