1 /* 2 * Copyright STMicroelectronics, 2007. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19 #include <linux/types.h> 20 #include <linux/init.h> 21 #include <linux/device.h> 22 #include <linux/amba/bus.h> 23 #include <linux/platform_device.h> 24 #include <linux/gpio.h> 25 26 #include <mach/hardware.h> 27 #include <mach/irqs.h> 28 #include <asm/mach/map.h> 29 #include <asm/hardware/vic.h> 30 31 #include <asm/cacheflush.h> 32 #include <asm/hardware/cache-l2x0.h> 33 34 #define __MEM_4K_RESOURCE(x) \ 35 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM} 36 37 /* The 8815 has 4 GPIO blocks, let's register them immediately */ 38 39 #define GPIO_RESOURCE(block) \ 40 { \ 41 .start = NOMADIK_GPIO##block##_BASE, \ 42 .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \ 43 .flags = IORESOURCE_MEM, \ 44 }, \ 45 { \ 46 .start = IRQ_GPIO##block, \ 47 .end = IRQ_GPIO##block, \ 48 .flags = IORESOURCE_IRQ, \ 49 } 50 51 #define GPIO_DEVICE(block) \ 52 { \ 53 .name = "gpio", \ 54 .id = block, \ 55 .num_resources = 2, \ 56 .resource = &cpu8815_gpio_resources[block * 2], \ 57 .dev = { \ 58 .platform_data = &cpu8815_gpio[block], \ 59 }, \ 60 } 61 62 static struct nmk_gpio_platform_data cpu8815_gpio[] = { 63 { 64 .name = "GPIO-0-31", 65 .first_gpio = 0, 66 .first_irq = NOMADIK_GPIO_TO_IRQ(0), 67 }, { 68 .name = "GPIO-32-63", 69 .first_gpio = 32, 70 .first_irq = NOMADIK_GPIO_TO_IRQ(32), 71 }, { 72 .name = "GPIO-64-95", 73 .first_gpio = 64, 74 .first_irq = NOMADIK_GPIO_TO_IRQ(64), 75 }, { 76 .name = "GPIO-96-127", /* 124..127 not routed to pin */ 77 .first_gpio = 96, 78 .first_irq = NOMADIK_GPIO_TO_IRQ(96), 79 } 80 }; 81 82 static struct resource cpu8815_gpio_resources[] = { 83 GPIO_RESOURCE(0), 84 GPIO_RESOURCE(1), 85 GPIO_RESOURCE(2), 86 GPIO_RESOURCE(3), 87 }; 88 89 static struct platform_device cpu8815_platform_gpio[] = { 90 GPIO_DEVICE(0), 91 GPIO_DEVICE(1), 92 GPIO_DEVICE(2), 93 GPIO_DEVICE(3), 94 }; 95 96 static struct amba_device cpu8815_amba_rng = { 97 .dev = { 98 .init_name = "rng", 99 }, 100 __MEM_4K_RESOURCE(NOMADIK_RNG_BASE), 101 }; 102 103 static struct platform_device *platform_devs[] __initdata = { 104 cpu8815_platform_gpio + 0, 105 cpu8815_platform_gpio + 1, 106 cpu8815_platform_gpio + 2, 107 cpu8815_platform_gpio + 3, 108 }; 109 110 static struct amba_device *amba_devs[] __initdata = { 111 &cpu8815_amba_rng 112 }; 113 114 static int __init cpu8815_init(void) 115 { 116 int i; 117 118 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); 119 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) 120 amba_device_register(amba_devs[i], &iomem_resource); 121 return 0; 122 } 123 arch_initcall(cpu8815_init); 124 125 /* All SoC devices live in the same area (see hardware.h) */ 126 static struct map_desc nomadik_io_desc[] __initdata = { 127 { 128 .virtual = NOMADIK_IO_VIRTUAL, 129 .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), 130 .length = NOMADIK_IO_SIZE, 131 .type = MT_DEVICE, 132 } 133 /* static ram and secured ram may be added later */ 134 }; 135 136 void __init cpu8815_map_io(void) 137 { 138 iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); 139 } 140 141 void __init cpu8815_init_irq(void) 142 { 143 /* This modified VIC cell has two register blocks, at 0 and 0x20 */ 144 vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); 145 vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); 146 } 147 148 /* 149 * This function is called from the board init ("init_machine"). 150 */ 151 void __init cpu8815_platform_init(void) 152 { 153 #ifdef CONFIG_CACHE_L2X0 154 /* At full speed latency must be >=2, so 0x249 in low bits */ 155 l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); 156 #endif 157 return; 158 } 159