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/ioport.h> 23#include <linux/platform_device.h> 24 25#include <asm/cpu.h> 26#include <asm/vr41xx/giu.h> 27#include <asm/vr41xx/irq.h> 28 29static struct resource giu_50pins_pullupdown_resource[] __initdata = { 30 { 31 .start = 0x0b000100, 32 .end = 0x0b00011f, 33 .flags = IORESOURCE_MEM, 34 }, 35 { 36 .start = 0x0b0002e0, 37 .end = 0x0b0002e3, 38 .flags = IORESOURCE_MEM, 39 }, 40 { 41 .start = GIUINT_IRQ, 42 .end = GIUINT_IRQ, 43 .flags = IORESOURCE_IRQ, 44 }, 45}; 46 47static struct resource giu_36pins_resource[] __initdata = { 48 { 49 .start = 0x0f000140, 50 .end = 0x0f00015f, 51 .flags = IORESOURCE_MEM, 52 }, 53 { 54 .start = GIUINT_IRQ, 55 .end = GIUINT_IRQ, 56 .flags = IORESOURCE_IRQ, 57 }, 58}; 59 60static struct resource giu_48pins_resource[] __initdata = { 61 { 62 .start = 0x0f000140, 63 .end = 0x0f000167, 64 .flags = IORESOURCE_MEM, 65 }, 66 { 67 .start = GIUINT_IRQ, 68 .end = GIUINT_IRQ, 69 .flags = IORESOURCE_IRQ, 70 }, 71}; 72 73static int __init vr41xx_giu_add(void) 74{ 75 struct platform_device *pdev; 76 struct resource *res; 77 unsigned int num; 78 int retval; 79 80 pdev = platform_device_alloc("GIU", -1); 81 if (!pdev) 82 return -ENOMEM; 83 84 switch (current_cpu_type()) { 85 case CPU_VR4111: 86 case CPU_VR4121: 87 pdev->id = GPIO_50PINS_PULLUPDOWN; 88 res = giu_50pins_pullupdown_resource; 89 num = ARRAY_SIZE(giu_50pins_pullupdown_resource); 90 break; 91 case CPU_VR4122: 92 case CPU_VR4131: 93 pdev->id = GPIO_36PINS; 94 res = giu_36pins_resource; 95 num = ARRAY_SIZE(giu_36pins_resource); 96 break; 97 case CPU_VR4133: 98 pdev->id = GPIO_48PINS_EDGE_SELECT; 99 res = giu_48pins_resource; 100 num = ARRAY_SIZE(giu_48pins_resource); 101 break; 102 default: 103 retval = -ENODEV; 104 goto err_free_device; 105 } 106 107 retval = platform_device_add_resources(pdev, res, num); 108 if (retval) 109 goto err_free_device; 110 111 retval = platform_device_add(pdev); 112 if (retval) 113 goto err_free_device; 114 115 return 0; 116 117err_free_device: 118 platform_device_put(pdev); 119 120 return retval; 121} 122device_initcall(vr41xx_giu_add); 123