1 /*
2 * NEC VR4100 series GIU platform device.
3 *
4 * Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20 #include <linux/errno.h>
21 #include <linux/init.h>
22 #include <linux/smp.h>
23 #include <linux/ioport.h>
24 #include <linux/platform_device.h>
25
26 #include <asm/cpu.h>
27 #include <asm/vr41xx/giu.h>
28 #include <asm/vr41xx/irq.h>
29
30 static struct resource giu_50pins_pullupdown_resource[] __initdata = {
31 {
32 .start = 0x0b000100,
33 .end = 0x0b00011f,
34 .flags = IORESOURCE_MEM,
35 },
36 {
37 .start = 0x0b0002e0,
38 .end = 0x0b0002e3,
39 .flags = IORESOURCE_MEM,
40 },
41 {
42 .start = GIUINT_IRQ,
43 .end = GIUINT_IRQ,
44 .flags = IORESOURCE_IRQ,
45 },
46 };
47
48 static struct resource giu_36pins_resource[] __initdata = {
49 {
50 .start = 0x0f000140,
51 .end = 0x0f00015f,
52 .flags = IORESOURCE_MEM,
53 },
54 {
55 .start = GIUINT_IRQ,
56 .end = GIUINT_IRQ,
57 .flags = IORESOURCE_IRQ,
58 },
59 };
60
61 static struct resource giu_48pins_resource[] __initdata = {
62 {
63 .start = 0x0f000140,
64 .end = 0x0f000167,
65 .flags = IORESOURCE_MEM,
66 },
67 {
68 .start = GIUINT_IRQ,
69 .end = GIUINT_IRQ,
70 .flags = IORESOURCE_IRQ,
71 },
72 };
73
vr41xx_giu_add(void)74 static int __init vr41xx_giu_add(void)
75 {
76 struct platform_device *pdev;
77 struct resource *res;
78 unsigned int num;
79 int retval;
80
81 pdev = platform_device_alloc("GIU", -1);
82 if (!pdev)
83 return -ENOMEM;
84
85 switch (current_cpu_type()) {
86 case CPU_VR4111:
87 case CPU_VR4121:
88 pdev->id = GPIO_50PINS_PULLUPDOWN;
89 res = giu_50pins_pullupdown_resource;
90 num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
91 break;
92 case CPU_VR4122:
93 case CPU_VR4131:
94 pdev->id = GPIO_36PINS;
95 res = giu_36pins_resource;
96 num = ARRAY_SIZE(giu_36pins_resource);
97 break;
98 case CPU_VR4133:
99 pdev->id = GPIO_48PINS_EDGE_SELECT;
100 res = giu_48pins_resource;
101 num = ARRAY_SIZE(giu_48pins_resource);
102 break;
103 default:
104 retval = -ENODEV;
105 goto err_free_device;
106 }
107
108 retval = platform_device_add_resources(pdev, res, num);
109 if (retval)
110 goto err_free_device;
111
112 retval = platform_device_add(pdev);
113 if (retval)
114 goto err_free_device;
115
116 return 0;
117
118 err_free_device:
119 platform_device_put(pdev);
120
121 return retval;
122 }
123 device_initcall(vr41xx_giu_add);
124