/* * linux/arch/arm/plat-omap/devices.c * * Common platform device setup/initialization for OMAP1 and OMAP2 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/gpio.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/slab.h> #include <linux/memblock.h> #include <mach/hardware.h> #include <asm/mach-types.h> #include <asm/mach/map.h> #include <asm/memblock.h> #include <plat/tc.h> #include <plat/board.h> #include <plat/mmc.h> #include <plat/menelaus.h> #include <plat/omap44xx.h> /*-------------------------------------------------------------------------*/ #if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE) #ifdef CONFIG_ARCH_OMAP2 #define OMAP_RNG_BASE 0x480A0000 #else #define OMAP_RNG_BASE 0xfffe5000 #endif static struct resource rng_resources[] = { { .start = OMAP_RNG_BASE, .end = OMAP_RNG_BASE + 0x4f, .flags = IORESOURCE_MEM, }, }; static struct platform_device omap_rng_device = { .name = "omap_rng", .id = -1, .num_resources = ARRAY_SIZE(rng_resources), .resource = rng_resources, }; static void omap_init_rng(void) { (void) platform_device_register(&omap_rng_device); } #else static inline void omap_init_rng(void) {} #endif /* * This gets called after board-specific INIT_MACHINE, and initializes most * on-chip peripherals accessible on this board (except for few like USB): * * (a) Does any "standard config" pin muxing needed. Board-specific * code will have muxed GPIO pins and done "nonstandard" setup; * that code could live in the boot loader. * (b) Populating board-specific platform_data with the data drivers * rely on to handle wiring variations. * (c) Creating platform devices as meaningful on this board and * with this kernel configuration. * * Claiming GPIOs, and setting their direction and initial values, is the * responsibility of the device drivers. So is responding to probe(). * * Board-specific knowledge like creating devices or pin setup is to be * kept out of drivers as much as possible. In particular, pin setup * may be handled by the boot loader, and drivers should expect it will * normally have been done by the time they're probed. */ static int __init omap_init_devices(void) { /* please keep these calls, and their implementations above, * in alphabetical order so they're easier to sort through. */ omap_init_rng(); return 0; } arch_initcall(omap_init_devices);