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/platform_device.h> 14 15 #include <plat/iommu.h> 16 #include <plat/irqs.h> 17 18 struct iommu_device { 19 resource_size_t base; 20 int irq; 21 struct iommu_platform_data pdata; 22 struct resource res[2]; 23 }; 24 static struct iommu_device *devices; 25 static int num_iommu_devices; 26 27 #ifdef CONFIG_ARCH_OMAP3 28 static struct iommu_device omap3_devices[] = { 29 { 30 .base = 0x480bd400, 31 .irq = 24, 32 .pdata = { 33 .name = "isp", 34 .nr_tlb_entries = 8, 35 .clk_name = "cam_ick", 36 }, 37 }, 38 #if defined(CONFIG_MPU_BRIDGE_IOMMU) 39 { 40 .base = 0x5d000000, 41 .irq = 28, 42 .pdata = { 43 .name = "iva2", 44 .nr_tlb_entries = 32, 45 .clk_name = "iva2_ck", 46 }, 47 }, 48 #endif 49 }; 50 #define NR_OMAP3_IOMMU_DEVICES ARRAY_SIZE(omap3_devices) 51 static struct platform_device *omap3_iommu_pdev[NR_OMAP3_IOMMU_DEVICES]; 52 #else 53 #define omap3_devices NULL 54 #define NR_OMAP3_IOMMU_DEVICES 0 55 #define omap3_iommu_pdev NULL 56 #endif 57 58 #ifdef CONFIG_ARCH_OMAP4 59 static struct iommu_device omap4_devices[] = { 60 { 61 .base = OMAP4_MMU1_BASE, 62 .irq = OMAP44XX_IRQ_DUCATI_MMU, 63 .pdata = { 64 .name = "ducati", 65 .nr_tlb_entries = 32, 66 .clk_name = "ducati_ick", 67 }, 68 }, 69 #if defined(CONFIG_MPU_TESLA_IOMMU) 70 { 71 .base = OMAP4_MMU2_BASE, 72 .irq = INT_44XX_DSP_MMU, 73 .pdata = { 74 .name = "tesla", 75 .nr_tlb_entries = 32, 76 .clk_name = "tesla_ick", 77 }, 78 }, 79 #endif 80 }; 81 #define NR_OMAP4_IOMMU_DEVICES ARRAY_SIZE(omap4_devices) 82 static struct platform_device *omap4_iommu_pdev[NR_OMAP4_IOMMU_DEVICES]; 83 #else 84 #define omap4_devices NULL 85 #define NR_OMAP4_IOMMU_DEVICES 0 86 #define omap4_iommu_pdev NULL 87 #endif 88 89 static struct platform_device **omap_iommu_pdev; 90 91 static int __init omap_iommu_init(void) 92 { 93 int i, err; 94 struct resource res[] = { 95 { .flags = IORESOURCE_MEM }, 96 { .flags = IORESOURCE_IRQ }, 97 }; 98 99 if (cpu_is_omap34xx()) { 100 devices = omap3_devices; 101 omap_iommu_pdev = omap3_iommu_pdev; 102 num_iommu_devices = NR_OMAP3_IOMMU_DEVICES; 103 } else if (cpu_is_omap44xx()) { 104 devices = omap4_devices; 105 omap_iommu_pdev = omap4_iommu_pdev; 106 num_iommu_devices = NR_OMAP4_IOMMU_DEVICES; 107 } else 108 return -ENODEV; 109 110 for (i = 0; i < num_iommu_devices; i++) { 111 struct platform_device *pdev; 112 const struct iommu_device *d = &devices[i]; 113 114 pdev = platform_device_alloc("omap-iommu", i); 115 if (!pdev) { 116 err = -ENOMEM; 117 goto err_out; 118 } 119 120 res[0].start = d->base; 121 res[0].end = d->base + MMU_REG_SIZE - 1; 122 res[1].start = res[1].end = d->irq; 123 124 err = platform_device_add_resources(pdev, res, 125 ARRAY_SIZE(res)); 126 if (err) 127 goto err_out; 128 err = platform_device_add_data(pdev, &d->pdata, 129 sizeof(d->pdata)); 130 if (err) 131 goto err_out; 132 err = platform_device_add(pdev); 133 if (err) 134 goto err_out; 135 omap_iommu_pdev[i] = pdev; 136 } 137 return 0; 138 139 err_out: 140 while (i--) 141 platform_device_put(omap_iommu_pdev[i]); 142 return err; 143 } 144 module_init(omap_iommu_init); 145 146 static void __exit omap_iommu_exit(void) 147 { 148 int i; 149 150 for (i = 0; i < num_iommu_devices; i++) 151 platform_device_unregister(omap_iommu_pdev[i]); 152 } 153 module_exit(omap_iommu_exit); 154 155 MODULE_AUTHOR("Hiroshi DOYU"); 156 MODULE_DESCRIPTION("omap iommu: omap device registration"); 157 MODULE_LICENSE("GPL v2"); 158