1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * NEC VR4100 series GIU platform device.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <linux/errno.h>
8*4882a593Smuzhiyun #include <linux/init.h>
9*4882a593Smuzhiyun #include <linux/smp.h>
10*4882a593Smuzhiyun #include <linux/ioport.h>
11*4882a593Smuzhiyun #include <linux/platform_device.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <asm/cpu.h>
14*4882a593Smuzhiyun #include <asm/vr41xx/giu.h>
15*4882a593Smuzhiyun #include <asm/vr41xx/irq.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun static struct resource giu_50pins_pullupdown_resource[] __initdata = {
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun .start = 0x0b000100,
20*4882a593Smuzhiyun .end = 0x0b00011f,
21*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
22*4882a593Smuzhiyun },
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun .start = 0x0b0002e0,
25*4882a593Smuzhiyun .end = 0x0b0002e3,
26*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
27*4882a593Smuzhiyun },
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun .start = GIUINT_IRQ,
30*4882a593Smuzhiyun .end = GIUINT_IRQ,
31*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
32*4882a593Smuzhiyun },
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun static struct resource giu_36pins_resource[] __initdata = {
36*4882a593Smuzhiyun {
37*4882a593Smuzhiyun .start = 0x0f000140,
38*4882a593Smuzhiyun .end = 0x0f00015f,
39*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
40*4882a593Smuzhiyun },
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun .start = GIUINT_IRQ,
43*4882a593Smuzhiyun .end = GIUINT_IRQ,
44*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
45*4882a593Smuzhiyun },
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun static struct resource giu_48pins_resource[] __initdata = {
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun .start = 0x0f000140,
51*4882a593Smuzhiyun .end = 0x0f000167,
52*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
53*4882a593Smuzhiyun },
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun .start = GIUINT_IRQ,
56*4882a593Smuzhiyun .end = GIUINT_IRQ,
57*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
58*4882a593Smuzhiyun },
59*4882a593Smuzhiyun };
60*4882a593Smuzhiyun
vr41xx_giu_add(void)61*4882a593Smuzhiyun static int __init vr41xx_giu_add(void)
62*4882a593Smuzhiyun {
63*4882a593Smuzhiyun struct platform_device *pdev;
64*4882a593Smuzhiyun struct resource *res;
65*4882a593Smuzhiyun unsigned int num;
66*4882a593Smuzhiyun int retval;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun pdev = platform_device_alloc("GIU", -1);
69*4882a593Smuzhiyun if (!pdev)
70*4882a593Smuzhiyun return -ENOMEM;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun switch (current_cpu_type()) {
73*4882a593Smuzhiyun case CPU_VR4111:
74*4882a593Smuzhiyun case CPU_VR4121:
75*4882a593Smuzhiyun pdev->id = GPIO_50PINS_PULLUPDOWN;
76*4882a593Smuzhiyun res = giu_50pins_pullupdown_resource;
77*4882a593Smuzhiyun num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
78*4882a593Smuzhiyun break;
79*4882a593Smuzhiyun case CPU_VR4122:
80*4882a593Smuzhiyun case CPU_VR4131:
81*4882a593Smuzhiyun pdev->id = GPIO_36PINS;
82*4882a593Smuzhiyun res = giu_36pins_resource;
83*4882a593Smuzhiyun num = ARRAY_SIZE(giu_36pins_resource);
84*4882a593Smuzhiyun break;
85*4882a593Smuzhiyun case CPU_VR4133:
86*4882a593Smuzhiyun pdev->id = GPIO_48PINS_EDGE_SELECT;
87*4882a593Smuzhiyun res = giu_48pins_resource;
88*4882a593Smuzhiyun num = ARRAY_SIZE(giu_48pins_resource);
89*4882a593Smuzhiyun break;
90*4882a593Smuzhiyun default:
91*4882a593Smuzhiyun retval = -ENODEV;
92*4882a593Smuzhiyun goto err_free_device;
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun retval = platform_device_add_resources(pdev, res, num);
96*4882a593Smuzhiyun if (retval)
97*4882a593Smuzhiyun goto err_free_device;
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun retval = platform_device_add(pdev);
100*4882a593Smuzhiyun if (retval)
101*4882a593Smuzhiyun goto err_free_device;
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun return 0;
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun err_free_device:
106*4882a593Smuzhiyun platform_device_put(pdev);
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun return retval;
109*4882a593Smuzhiyun }
110*4882a593Smuzhiyun device_initcall(vr41xx_giu_add);
111