1 /* 2 * omap iommu: omap device registration 3 * 4 * Copyright (C) 2008-2009 Nokia Corporation 5 * 6 * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #include <linux/module.h> 14 #include <linux/platform_device.h> 15 16 #include <plat/iommu.h> 17 #include <plat/irqs.h> 18 19 struct iommu_device { 20 resource_size_t base; 21 int irq; 22 struct iommu_platform_data pdata; 23 struct resource res[2]; 24 }; 25 static struct iommu_device *devices; 26 static int num_iommu_devices; 27 28 #ifdef CONFIG_ARCH_OMAP3 29 static struct iommu_device omap3_devices[] = { 30 { 31 .base = 0x480bd400, 32 .irq = 24, 33 .pdata = { 34 .name = "isp", 35 .nr_tlb_entries = 8, 36 .clk_name = "cam_ick", 37 .da_start = 0x0, 38 .da_end = 0xFFFFF000, 39 }, 40 }, 41 #if defined(CONFIG_OMAP_IOMMU_IVA2) 42 { 43 .base = 0x5d000000, 44 .irq = 28, 45 .pdata = { 46 .name = "iva2", 47 .nr_tlb_entries = 32, 48 .clk_name = "iva2_ck", 49 .da_start = 0x11000000, 50 .da_end = 0xFFFFF000, 51 }, 52 }, 53 #endif 54 }; 55 #define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices) 56 static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES]; 57 #else 58 #define omap3_devices NULL 59 #define NR_OMAP3_IOMMU_DEVICES 0 60 #define omap3_iommu_pdev NULL 61 #endif 62 63 #ifdef CONFIG_ARCH_OMAP4 64 static struct iommu_device omap4_devices[] = { 65 { 66 .base = OMAP4_MMU1_BASE, 67 .irq = OMAP44XX_IRQ_DUCATI_MMU, 68 .pdata = { 69 .name = "ducati", 70 .nr_tlb_entries = 32, 71 .clk_name = "ipu_fck", 72 .da_start = 0x0, 73 .da_end = 0xFFFFF000, 74 }, 75 }, 76 { 77 .base = OMAP4_MMU2_BASE, 78 .irq = OMAP44XX_IRQ_TESLA_MMU, 79 .pdata = { 80 .name = "tesla", 81 .nr_tlb_entries = 32, 82 .clk_name = "dsp_fck", 83 .da_start = 0x0, 84 .da_end = 0xFFFFF000, 85 }, 86 }, 87 }; 88 #define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices) 89 static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES]; 90 #else 91 #define omap4_devices NULL 92 #define NR_OMAP4_IOMMU_DEVICES 0 93 #define omap4_iommu_pdev NULL 94 #endif 95 96 static struct platform_device **omap_iommu_pdev; 97 98 static int __init omap_iommu_init(void) 99 { 100 int i, err; 101 struct resource res[] = { 102 { .flags = IORESOURCE_MEM }, 103 { .flags = IORESOURCE_IRQ }, 104 }; 105 106 if (cpu_is_omap34xx()) { 107 devices = omap3_devices; 108 omap_iommu_pdev = omap3_iommu_pdev; 109 num_iommu_devices = NR_OMAP3_IOMMU_DEVICES; 110 } else if (cpu_is_omap44xx()) { 111 devices = omap4_devices; 112 omap_iommu_pdev = omap4_iommu_pdev; 113 num_iommu_devices = NR_OMAP4_IOMMU_DEVICES; 114 } else 115 return -ENODEV; 116 117 for (i = 0; i < num_iommu_devices; i++) { 118 struct platform_device *pdev; 119 const struct iommu_device *d = &devices[i]; 120 121 pdev = platform_device_alloc("omap-iommu", i); 122 if (!pdev) { 123 err = -ENOMEM; 124 goto err_out; 125 } 126 127 res[0].start = d->base; 128 res[0].end = d->base + MMU_REG_SIZE - 1; 129 res[1].start = res[1].end = d->irq; 130 131 err = platform_device_add_resources(pdev, res, 132 ARRAY_SIZE(res)); 133 if (err) 134 goto err_out; 135 err = platform_device_add_data(pdev, &d->pdata, 136 sizeof(d->pdata)); 137 if (err) 138 goto err_out; 139 err = platform_device_add(pdev); 140 if (err) 141 goto err_out; 142 omap_iommu_pdev[i] = pdev; 143 } 144 return 0; 145 146 err_out: 147 while (i--) 148 platform_device_put(omap_iommu_pdev[i]); 149 return err; 150 } 151 /* must be ready before omap3isp is probed */ 152 subsys_initcall(omap_iommu_init); 153 154 static void __exit omap_iommu_exit(void) 155 { 156 int i; 157 158 for (i = 0; i < num_iommu_devices; i++) 159 platform_device_unregister(omap_iommu_pdev[i]); 160 } 161 module_exit(omap_iommu_exit); 162 163 MODULE_AUTHOR("Hiroshi DOYU"); 164 MODULE_DESCRIPTION("omap iommu: omap device registration"); 165 MODULE_LICENSE("GPL v2"); 166