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/gpio.h> 24 25 #include <mach/hardware.h> 26 #include <mach/irqs.h> 27 #include <asm/mach/map.h> 28 #include <asm/hardware/vic.h> 29 30 #include <asm/cacheflush.h> 31 #include <asm/hardware/cache-l2x0.h> 32 33 /* The 8815 has 4 GPIO blocks, let's register them immediately */ 34 static struct nmk_gpio_platform_data cpu8815_gpio[] = { 35 { 36 .name = "GPIO-0-31", 37 .first_gpio = 0, 38 .first_irq = NOMADIK_GPIO_TO_IRQ(0), 39 .parent_irq = IRQ_GPIO0, 40 }, { 41 .name = "GPIO-32-63", 42 .first_gpio = 32, 43 .first_irq = NOMADIK_GPIO_TO_IRQ(32), 44 .parent_irq = IRQ_GPIO1, 45 }, { 46 .name = "GPIO-64-95", 47 .first_gpio = 64, 48 .first_irq = NOMADIK_GPIO_TO_IRQ(64), 49 .parent_irq = IRQ_GPIO2, 50 }, { 51 .name = "GPIO-96-127", /* 124..127 not routed to pin */ 52 .first_gpio = 96, 53 .first_irq = NOMADIK_GPIO_TO_IRQ(96), 54 .parent_irq = IRQ_GPIO3, 55 } 56 }; 57 58 #define __MEM_4K_RESOURCE(x) \ 59 .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM} 60 61 static struct amba_device cpu8815_amba_gpio[] = { 62 { 63 .dev = { 64 .init_name = "gpio0", 65 .platform_data = cpu8815_gpio + 0, 66 }, 67 __MEM_4K_RESOURCE(NOMADIK_GPIO0_BASE), 68 }, { 69 .dev = { 70 .init_name = "gpio1", 71 .platform_data = cpu8815_gpio + 1, 72 }, 73 __MEM_4K_RESOURCE(NOMADIK_GPIO1_BASE), 74 }, { 75 .dev = { 76 .init_name = "gpio2", 77 .platform_data = cpu8815_gpio + 2, 78 }, 79 __MEM_4K_RESOURCE(NOMADIK_GPIO2_BASE), 80 }, { 81 .dev = { 82 .init_name = "gpio3", 83 .platform_data = cpu8815_gpio + 3, 84 }, 85 __MEM_4K_RESOURCE(NOMADIK_GPIO3_BASE), 86 }, 87 }; 88 89 static struct amba_device *amba_devs[] __initdata = { 90 cpu8815_amba_gpio + 0, 91 cpu8815_amba_gpio + 1, 92 cpu8815_amba_gpio + 2, 93 cpu8815_amba_gpio + 3, 94 }; 95 96 static int __init cpu8815_init(void) 97 { 98 int i; 99 100 for (i = 0; i < ARRAY_SIZE(amba_devs); i++) 101 amba_device_register(amba_devs[i], &iomem_resource); 102 return 0; 103 } 104 arch_initcall(cpu8815_init); 105 106 /* All SoC devices live in the same area (see hardware.h) */ 107 static struct map_desc nomadik_io_desc[] __initdata = { 108 { 109 .virtual = NOMADIK_IO_VIRTUAL, 110 .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), 111 .length = NOMADIK_IO_SIZE, 112 .type = MT_DEVICE, 113 } 114 /* static ram and secured ram may be added later */ 115 }; 116 117 void __init cpu8815_map_io(void) 118 { 119 iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); 120 } 121 122 void __init cpu8815_init_irq(void) 123 { 124 /* This modified VIC cell has two register blocks, at 0 and 0x20 */ 125 vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); 126 vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); 127 } 128 129 /* 130 * This function is called from the board init ("init_machine"). 131 */ 132 void __init cpu8815_platform_init(void) 133 { 134 #ifdef CONFIG_CACHE_L2X0 135 /* At full speed latency must be >=2, so 0x249 in low bits */ 136 l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); 137 #endif 138 return; 139 } 140