1 /* 2 * linux/arch/arm/mach-omap1/devices.c 3 * 4 * OMAP1 platform device setup/initialization 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 12 #include <linux/module.h> 13 #include <linux/kernel.h> 14 #include <linux/init.h> 15 #include <linux/platform_device.h> 16 17 #include <asm/hardware.h> 18 #include <asm/io.h> 19 #include <asm/mach-types.h> 20 #include <asm/mach/map.h> 21 22 #include <asm/arch/tc.h> 23 #include <asm/arch/board.h> 24 #include <asm/arch/mux.h> 25 #include <asm/arch/gpio.h> 26 27 #if defined(CONFIG_OMAP1610_IR) || defined(CONFIG_OMAP161O_IR_MODULE) 28 29 static u64 irda_dmamask = 0xffffffff; 30 31 static struct platform_device omap1610ir_device = { 32 .name = "omap1610-ir", 33 .id = -1, 34 .dev = { 35 .dma_mask = &irda_dmamask, 36 }, 37 }; 38 39 static void omap_init_irda(void) 40 { 41 /* FIXME define and use a boot tag, members something like: 42 * u8 uart; // uart1, or uart3 43 * ... but driver only handles uart3 for now 44 * s16 fir_sel; // gpio for SIR vs FIR 45 * ... may prefer a callback for SIR/MIR/FIR mode select; 46 * while h2 uses a GPIO, H3 uses a gpio expander 47 */ 48 if (machine_is_omap_h2() 49 || machine_is_omap_h3()) 50 (void) platform_device_register(&omap1610ir_device); 51 } 52 #else 53 static inline void omap_init_irda(void) {} 54 #endif 55 56 /*-------------------------------------------------------------------------*/ 57 58 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE) 59 60 #define OMAP_RTC_BASE 0xfffb4800 61 62 static struct resource rtc_resources[] = { 63 { 64 .start = OMAP_RTC_BASE, 65 .end = OMAP_RTC_BASE + 0x5f, 66 .flags = IORESOURCE_MEM, 67 }, 68 { 69 .start = INT_RTC_TIMER, 70 .flags = IORESOURCE_IRQ, 71 }, 72 { 73 .start = INT_RTC_ALARM, 74 .flags = IORESOURCE_IRQ, 75 }, 76 }; 77 78 static struct platform_device omap_rtc_device = { 79 .name = "omap_rtc", 80 .id = -1, 81 .num_resources = ARRAY_SIZE(rtc_resources), 82 .resource = rtc_resources, 83 }; 84 85 static void omap_init_rtc(void) 86 { 87 (void) platform_device_register(&omap_rtc_device); 88 } 89 #else 90 static inline void omap_init_rtc(void) {} 91 #endif 92 93 #if defined(CONFIG_OMAP_STI) 94 95 #define OMAP1_STI_BASE IO_ADDRESS(0xfffea000) 96 #define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400) 97 98 static struct resource sti_resources[] = { 99 { 100 .start = OMAP1_STI_BASE, 101 .end = OMAP1_STI_BASE + SZ_1K - 1, 102 .flags = IORESOURCE_MEM, 103 }, 104 { 105 .start = OMAP1_STI_CHANNEL_BASE, 106 .end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1, 107 .flags = IORESOURCE_MEM, 108 }, 109 { 110 .start = INT_1610_STI, 111 .flags = IORESOURCE_IRQ, 112 } 113 }; 114 115 static struct platform_device sti_device = { 116 .name = "sti", 117 .id = -1, 118 .num_resources = ARRAY_SIZE(sti_resources), 119 .resource = sti_resources, 120 }; 121 122 static inline void omap_init_sti(void) 123 { 124 platform_device_register(&sti_device); 125 } 126 #else 127 static inline void omap_init_sti(void) {} 128 #endif 129 130 /*-------------------------------------------------------------------------*/ 131 132 /* 133 * This gets called after board-specific INIT_MACHINE, and initializes most 134 * on-chip peripherals accessible on this board (except for few like USB): 135 * 136 * (a) Does any "standard config" pin muxing needed. Board-specific 137 * code will have muxed GPIO pins and done "nonstandard" setup; 138 * that code could live in the boot loader. 139 * (b) Populating board-specific platform_data with the data drivers 140 * rely on to handle wiring variations. 141 * (c) Creating platform devices as meaningful on this board and 142 * with this kernel configuration. 143 * 144 * Claiming GPIOs, and setting their direction and initial values, is the 145 * responsibility of the device drivers. So is responding to probe(). 146 * 147 * Board-specific knowlege like creating devices or pin setup is to be 148 * kept out of drivers as much as possible. In particular, pin setup 149 * may be handled by the boot loader, and drivers should expect it will 150 * normally have been done by the time they're probed. 151 */ 152 static int __init omap1_init_devices(void) 153 { 154 /* please keep these calls, and their implementations above, 155 * in alphabetical order so they're easier to sort through. 156 */ 157 omap_init_irda(); 158 omap_init_rtc(); 159 omap_init_sti(); 160 161 return 0; 162 } 163 arch_initcall(omap1_init_devices); 164 165