1/* 2 * linux/arch/arm/plat-omap/devices.c 3 * 4 * Common platform device setup/initialization for OMAP1 and OMAP2 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#include <linux/io.h> 17#include <linux/slab.h> 18 19#include <mach/hardware.h> 20#include <asm/mach-types.h> 21#include <asm/mach/map.h> 22 23#include <plat/tc.h> 24#include <plat/control.h> 25#include <plat/board.h> 26#include <plat/mmc.h> 27#include <mach/gpio.h> 28#include <plat/menelaus.h> 29#include <plat/mcbsp.h> 30#include <plat/omap44xx.h> 31 32/*-------------------------------------------------------------------------*/ 33 34#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE) 35 36static struct platform_device **omap_mcbsp_devices; 37 38void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, 39 int size) 40{ 41 int i; 42 43 omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *), 44 GFP_KERNEL); 45 if (!omap_mcbsp_devices) { 46 printk(KERN_ERR "Could not register McBSP devices\n"); 47 return; 48 } 49 50 for (i = 0; i < size; i++) { 51 struct platform_device *new_mcbsp; 52 int ret; 53 54 new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1); 55 if (!new_mcbsp) 56 continue; 57 new_mcbsp->dev.platform_data = &config[i]; 58 ret = platform_device_add(new_mcbsp); 59 if (ret) { 60 platform_device_put(new_mcbsp); 61 continue; 62 } 63 omap_mcbsp_devices[i] = new_mcbsp; 64 } 65} 66 67#else 68void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config, 69 int size) 70{ } 71#endif 72 73/*-------------------------------------------------------------------------*/ 74 75#if defined(CONFIG_SND_OMAP_SOC_MCPDM) || defined(CONFIG_SND_OMAP_SOC_MCPDM_MODULE) 76 77static struct resource mcpdm_resources[] = { 78 { 79 .name = "mcpdm_mem", 80 .start = OMAP44XX_MCPDM_BASE, 81 .end = OMAP44XX_MCPDM_BASE + SZ_4K, 82 .flags = IORESOURCE_MEM, 83 }, 84 { 85 .name = "mcpdm_irq", 86 .start = OMAP44XX_IRQ_MCPDM, 87 .end = OMAP44XX_IRQ_MCPDM, 88 .flags = IORESOURCE_IRQ, 89 }, 90}; 91 92static struct platform_device omap_mcpdm_device = { 93 .name = "omap-mcpdm", 94 .id = -1, 95 .num_resources = ARRAY_SIZE(mcpdm_resources), 96 .resource = mcpdm_resources, 97}; 98 99static void omap_init_mcpdm(void) 100{ 101 (void) platform_device_register(&omap_mcpdm_device); 102} 103#else 104static inline void omap_init_mcpdm(void) {} 105#endif 106 107/*-------------------------------------------------------------------------*/ 108 109#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE) || \ 110 defined(CONFIG_MMC_OMAP_HS) || defined(CONFIG_MMC_OMAP_HS_MODULE) 111 112#define OMAP_MMC_NR_RES 2 113 114/* 115 * Register MMC devices. Called from mach-omap1 and mach-omap2 device init. 116 */ 117int __init omap_mmc_add(const char *name, int id, unsigned long base, 118 unsigned long size, unsigned int irq, 119 struct omap_mmc_platform_data *data) 120{ 121 struct platform_device *pdev; 122 struct resource res[OMAP_MMC_NR_RES]; 123 int ret; 124 125 pdev = platform_device_alloc(name, id); 126 if (!pdev) 127 return -ENOMEM; 128 129 memset(res, 0, OMAP_MMC_NR_RES * sizeof(struct resource)); 130 res[0].start = base; 131 res[0].end = base + size - 1; 132 res[0].flags = IORESOURCE_MEM; 133 res[1].start = res[1].end = irq; 134 res[1].flags = IORESOURCE_IRQ; 135 136 ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); 137 if (ret == 0) 138 ret = platform_device_add_data(pdev, data, sizeof(*data)); 139 if (ret) 140 goto fail; 141 142 ret = platform_device_add(pdev); 143 if (ret) 144 goto fail; 145 146 /* return device handle to board setup code */ 147 data->dev = &pdev->dev; 148 return 0; 149 150fail: 151 platform_device_put(pdev); 152 return ret; 153} 154 155#endif 156 157/*-------------------------------------------------------------------------*/ 158 159#if defined(CONFIG_HW_RANDOM_OMAP) || defined(CONFIG_HW_RANDOM_OMAP_MODULE) 160 161#ifdef CONFIG_ARCH_OMAP2 162#define OMAP_RNG_BASE 0x480A0000 163#else 164#define OMAP_RNG_BASE 0xfffe5000 165#endif 166 167static struct resource rng_resources[] = { 168 { 169 .start = OMAP_RNG_BASE, 170 .end = OMAP_RNG_BASE + 0x4f, 171 .flags = IORESOURCE_MEM, 172 }, 173}; 174 175static struct platform_device omap_rng_device = { 176 .name = "omap_rng", 177 .id = -1, 178 .num_resources = ARRAY_SIZE(rng_resources), 179 .resource = rng_resources, 180}; 181 182static void omap_init_rng(void) 183{ 184 (void) platform_device_register(&omap_rng_device); 185} 186#else 187static inline void omap_init_rng(void) {} 188#endif 189 190/*-------------------------------------------------------------------------*/ 191 192/* Numbering for the SPI-capable controllers when used for SPI: 193 * spi = 1 194 * uwire = 2 195 * mmc1..2 = 3..4 196 * mcbsp1..3 = 5..7 197 */ 198 199#if defined(CONFIG_SPI_OMAP_UWIRE) || defined(CONFIG_SPI_OMAP_UWIRE_MODULE) 200 201#define OMAP_UWIRE_BASE 0xfffb3000 202 203static struct resource uwire_resources[] = { 204 { 205 .start = OMAP_UWIRE_BASE, 206 .end = OMAP_UWIRE_BASE + 0x20, 207 .flags = IORESOURCE_MEM, 208 }, 209}; 210 211static struct platform_device omap_uwire_device = { 212 .name = "omap_uwire", 213 .id = -1, 214 .num_resources = ARRAY_SIZE(uwire_resources), 215 .resource = uwire_resources, 216}; 217 218static void omap_init_uwire(void) 219{ 220 221 /* board-specific code must configure chipselects (only a few 222 * are normally used) and SCLK/SDI/SDO (each has two choices). 223 */ 224 (void) platform_device_register(&omap_uwire_device); 225} 226#else 227static inline void omap_init_uwire(void) {} 228#endif 229 230/*-------------------------------------------------------------------------*/ 231 232#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE) 233 234static struct resource wdt_resources[] = { 235 { 236 .flags = IORESOURCE_MEM, 237 }, 238}; 239 240static struct platform_device omap_wdt_device = { 241 .name = "omap_wdt", 242 .id = -1, 243 .num_resources = ARRAY_SIZE(wdt_resources), 244 .resource = wdt_resources, 245}; 246 247static void omap_init_wdt(void) 248{ 249 if (cpu_is_omap16xx()) 250 wdt_resources[0].start = 0xfffeb000; 251 else if (cpu_is_omap2420()) 252 wdt_resources[0].start = 0x48022000; /* WDT2 */ 253 else if (cpu_is_omap2430()) 254 wdt_resources[0].start = 0x49016000; /* WDT2 */ 255 else if (cpu_is_omap343x()) 256 wdt_resources[0].start = 0x48314000; /* WDT2 */ 257 else if (cpu_is_omap44xx()) 258 wdt_resources[0].start = 0x4a314000; 259 else 260 return; 261 262 wdt_resources[0].end = wdt_resources[0].start + 0x4f; 263 264 (void) platform_device_register(&omap_wdt_device); 265} 266#else 267static inline void omap_init_wdt(void) {} 268#endif 269 270/* 271 * This gets called after board-specific INIT_MACHINE, and initializes most 272 * on-chip peripherals accessible on this board (except for few like USB): 273 * 274 * (a) Does any "standard config" pin muxing needed. Board-specific 275 * code will have muxed GPIO pins and done "nonstandard" setup; 276 * that code could live in the boot loader. 277 * (b) Populating board-specific platform_data with the data drivers 278 * rely on to handle wiring variations. 279 * (c) Creating platform devices as meaningful on this board and 280 * with this kernel configuration. 281 * 282 * Claiming GPIOs, and setting their direction and initial values, is the 283 * responsibility of the device drivers. So is responding to probe(). 284 * 285 * Board-specific knowlege like creating devices or pin setup is to be 286 * kept out of drivers as much as possible. In particular, pin setup 287 * may be handled by the boot loader, and drivers should expect it will 288 * normally have been done by the time they're probed. 289 */ 290static int __init omap_init_devices(void) 291{ 292 /* please keep these calls, and their implementations above, 293 * in alphabetical order so they're easier to sort through. 294 */ 295 omap_init_rng(); 296 omap_init_mcpdm(); 297 omap_init_uwire(); 298 omap_init_wdt(); 299 return 0; 300} 301arch_initcall(omap_init_devices); 302