arch/arm/mach-omap1/devices.c

   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/dma-mapping.h>
  13 #include <linux/gpio.h>
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/spi/spi.h>
  19
  20 #include <asm/mach/map.h>
  21
  22 #include <plat/tc.h>
  23 #include <plat/board.h>
  24 #include <plat/mux.h>
  25 #include <plat/mmc.h>
  26 #include <plat/omap7xx.h>
  27
  28 #include <mach/camera.h>
  29 #include <mach/hardware.h>
  30
  31 #include "common.h"
  32 #include "clock.h"
  33
  34 /*-------------------------------------------------------------------------*/
  35
  36 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  37
  38 #define OMAP_RTC_BASE           0xfffb4800
  39
  40 static struct resource rtc_resources[] = {
  41         {
  42                 .start          = OMAP_RTC_BASE,
  43                 .end            = OMAP_RTC_BASE + 0x5f,
  44                 .flags          = IORESOURCE_MEM,
  45         },
  46         {
  47                 .start          = INT_RTC_TIMER,
  48                 .flags          = IORESOURCE_IRQ,
  49         },
  50         {
  51                 .start          = INT_RTC_ALARM,
  52                 .flags          = IORESOURCE_IRQ,
  53         },
  54 };
  55
  56 static struct platform_device omap_rtc_device = {
  57         .name           = "omap_rtc",
  58         .id             = -1,
  59         .num_resources  = ARRAY_SIZE(rtc_resources),
  60         .resource       = rtc_resources,
  61 };
  62
  63 static void omap_init_rtc(void)
  64 {
  65         (void) platform_device_register(&omap_rtc_device);
  66 }
  67 #else
  68 static inline void omap_init_rtc(void) {}
  69 #endif
  70
  71 static inline void omap_init_mbox(void) { }
  72
  73 /*-------------------------------------------------------------------------*/
  74
  75 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  76
  77 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  78                         int controller_nr)
  79 {
  80         if (controller_nr == 0) {
  81                 if (cpu_is_omap7xx()) {
  82                         omap_cfg_reg(MMC_7XX_CMD);
  83                         omap_cfg_reg(MMC_7XX_CLK);
  84                         omap_cfg_reg(MMC_7XX_DAT0);
  85                 } else {
  86                         omap_cfg_reg(MMC_CMD);
  87                         omap_cfg_reg(MMC_CLK);
  88                         omap_cfg_reg(MMC_DAT0);
  89                 }
  90
  91                 if (cpu_is_omap1710()) {
  92                         omap_cfg_reg(M15_1710_MMC_CLKI);
  93                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
  94                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
  95                 }
  96                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
  97                         omap_cfg_reg(MMC_DAT1);
  98                         /* NOTE: DAT2 can be on W10 (here) or M15 */
  99                         if (!mmc_controller->slots[0].nomux)
 100                                 omap_cfg_reg(MMC_DAT2);
 101                         omap_cfg_reg(MMC_DAT3);
 102                 }
 103         }
 104
 105         /* Block 2 is on newer chips, and has many pinout options */
 106         if (cpu_is_omap16xx() && controller_nr == 1) {
 107                 if (!mmc_controller->slots[1].nomux) {
 108                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 109                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 110                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 111                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 112                         if (mmc_controller->slots[1].wires == 4) {
 113                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 114                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 115                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 116                         }
 117
 118                         /* These are needed for the level shifter */
 119                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 120                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 121                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 122                 }
 123
 124                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 125                 if (cpu_is_omap1710())
 126                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 127                                         MOD_CONF_CTRL_1);
 128         }
 129 }
 130
 131 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 132                         int nr_controllers)
 133 {
 134         int i;
 135
 136         for (i = 0; i < nr_controllers; i++) {
 137                 unsigned long base, size;
 138                 unsigned int irq = 0;
 139
 140                 if (!mmc_data[i])
 141                         continue;
 142
 143                 omap1_mmc_mux(mmc_data[i], i);
 144
 145                 switch (i) {
 146                 case 0:
 147                         base = OMAP1_MMC1_BASE;
 148                         irq = INT_MMC;
 149                         break;
 150                 case 1:
 151                         if (!cpu_is_omap16xx())
 152                                 return;
 153                         base = OMAP1_MMC2_BASE;
 154                         irq = INT_1610_MMC2;
 155                         break;
 156                 default:
 157                         continue;
 158                 }
 159                 size = OMAP1_MMC_SIZE;
 160
 161                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 162         };
 163 }
 164
 165 #endif
 166
 167 /*-------------------------------------------------------------------------*/
 168
 169 /* OMAP7xx SPI support */
 170 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 171
 172 struct platform_device omap_spi1 = {
 173         .name           = "omap1_spi100k",
 174         .id             = 1,
 175 };
 176
 177 struct platform_device omap_spi2 = {
 178         .name           = "omap1_spi100k",
 179         .id             = 2,
 180 };
 181
 182 static void omap_init_spi100k(void)
 183 {
 184         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 185         if (omap_spi1.dev.platform_data)
 186                 platform_device_register(&omap_spi1);
 187
 188         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 189         if (omap_spi2.dev.platform_data)
 190                 platform_device_register(&omap_spi2);
 191 }
 192
 193 #else
 194 static inline void omap_init_spi100k(void)
 195 {
 196 }
 197 #endif
 198
 199
 200 #define OMAP1_CAMERA_BASE       0xfffb6800
 201 #define OMAP1_CAMERA_IOSIZE     0x1c
 202
 203 static struct resource omap1_camera_resources[] = {
 204         [0] = {
 205                 .start  = OMAP1_CAMERA_BASE,
 206                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 207                 .flags  = IORESOURCE_MEM,
 208         },
 209         [1] = {
 210                 .start  = INT_CAMERA,
 211                 .flags  = IORESOURCE_IRQ,
 212         },
 213 };
 214
 215 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 216
 217 static struct platform_device omap1_camera_device = {
 218         .name           = "omap1-camera",
 219         .id             = 0, /* This is used to put cameras on this interface */
 220         .dev            = {
 221                 .dma_mask               = &omap1_camera_dma_mask,
 222                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 223         },
 224         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 225         .resource       = omap1_camera_resources,
 226 };
 227
 228 void __init omap1_camera_init(void *info)
 229 {
 230         struct platform_device *dev = &omap1_camera_device;
 231         int ret;
 232
 233         dev->dev.platform_data = info;
 234
 235         ret = platform_device_register(dev);
 236         if (ret)
 237                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 238 }
 239
 240
 241 /*-------------------------------------------------------------------------*/
 242
 243 static inline void omap_init_sti(void) {}
 244
 245 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 246
 247 static struct platform_device omap_pcm = {
 248         .name   = "omap-pcm-audio",
 249         .id     = -1,
 250 };
 251
 252 static void omap_init_audio(void)
 253 {
 254         platform_device_register(&omap_pcm);
 255 }
 256
 257 #else
 258 static inline void omap_init_audio(void) {}
 259 #endif
 260
 261 /*-------------------------------------------------------------------------*/
 262
 263 /*
 264  * This gets called after board-specific INIT_MACHINE, and initializes most
 265  * on-chip peripherals accessible on this board (except for few like USB):
 266  *
 267  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 268  *      code will have muxed GPIO pins and done "nonstandard" setup;
 269  *      that code could live in the boot loader.
 270  *  (b) Populating board-specific platform_data with the data drivers
 271  *      rely on to handle wiring variations.
 272  *  (c) Creating platform devices as meaningful on this board and
 273  *      with this kernel configuration.
 274  *
 275  * Claiming GPIOs, and setting their direction and initial values, is the
 276  * responsibility of the device drivers.  So is responding to probe().
 277  *
 278  * Board-specific knowledge like creating devices or pin setup is to be
 279  * kept out of drivers as much as possible.  In particular, pin setup
 280  * may be handled by the boot loader, and drivers should expect it will
 281  * normally have been done by the time they're probed.
 282  */
 283 static int __init omap1_init_devices(void)
 284 {
 285         if (!cpu_class_is_omap1())
 286                 return -ENODEV;
 287
 288         omap_sram_init();
 289         omap1_clk_late_init();
 290
 291         /* please keep these calls, and their implementations above,
 292          * in alphabetical order so they're easier to sort through.
 293          */
 294
 295         omap_init_mbox();
 296         omap_init_rtc();
 297         omap_init_spi100k();
 298         omap_init_sti();
 299         omap_init_audio();
 300
 301         return 0;
 302 }
 303 arch_initcall(omap1_init_devices);
 304
 305 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 306
 307 static struct resource wdt_resources[] = {
 308         {
 309                 .start          = 0xfffeb000,
 310                 .end            = 0xfffeb07F,
 311                 .flags          = IORESOURCE_MEM,
 312         },
 313 };
 314
 315 static struct platform_device omap_wdt_device = {
 316         .name      = "omap_wdt",
 317         .id          = -1,
 318         .num_resources  = ARRAY_SIZE(wdt_resources),
 319         .resource       = wdt_resources,
 320 };
 321
 322 static int __init omap_init_wdt(void)
 323 {
 324         if (!cpu_is_omap16xx())
 325                 return -ENODEV;
 326
 327         return platform_device_register(&omap_wdt_device);
 328 }
 329 subsys_initcall(omap_init_wdt);
 330 #endif