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/io.h>
  19 #include <linux/spi/spi.h>
  20
  21 #include <mach/camera.h>
  22 #include <mach/hardware.h>
  23 #include <asm/mach/map.h>
  24
  25 #include "common.h"
  26 #include <plat/tc.h>
  27 #include <plat/board.h>
  28 #include <plat/mux.h>
  29 #include <plat/mmc.h>
  30 #include <plat/omap7xx.h>
  31 #include <plat/mcbsp.h>
  32
  33 #include "clock.h"
  34
  35 /*-------------------------------------------------------------------------*/
  36
  37 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  38
  39 #define OMAP_RTC_BASE           0xfffb4800
  40
  41 static struct resource rtc_resources[] = {
  42         {
  43                 .start          = OMAP_RTC_BASE,
  44                 .end            = OMAP_RTC_BASE + 0x5f,
  45                 .flags          = IORESOURCE_MEM,
  46         },
  47         {
  48                 .start          = INT_RTC_TIMER,
  49                 .flags          = IORESOURCE_IRQ,
  50         },
  51         {
  52                 .start          = INT_RTC_ALARM,
  53                 .flags          = IORESOURCE_IRQ,
  54         },
  55 };
  56
  57 static struct platform_device omap_rtc_device = {
  58         .name           = "omap_rtc",
  59         .id             = -1,
  60         .num_resources  = ARRAY_SIZE(rtc_resources),
  61         .resource       = rtc_resources,
  62 };
  63
  64 static void omap_init_rtc(void)
  65 {
  66         (void) platform_device_register(&omap_rtc_device);
  67 }
  68 #else
  69 static inline void omap_init_rtc(void) {}
  70 #endif
  71
  72 static inline void omap_init_mbox(void) { }
  73
  74 /*-------------------------------------------------------------------------*/
  75
  76 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  77
  78 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  79                         int controller_nr)
  80 {
  81         if (controller_nr == 0) {
  82                 if (cpu_is_omap7xx()) {
  83                         omap_cfg_reg(MMC_7XX_CMD);
  84                         omap_cfg_reg(MMC_7XX_CLK);
  85                         omap_cfg_reg(MMC_7XX_DAT0);
  86                 } else {
  87                         omap_cfg_reg(MMC_CMD);
  88                         omap_cfg_reg(MMC_CLK);
  89                         omap_cfg_reg(MMC_DAT0);
  90                 }
  91
  92                 if (cpu_is_omap1710()) {
  93                         omap_cfg_reg(M15_1710_MMC_CLKI);
  94                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
  95                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
  96                 }
  97                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
  98                         omap_cfg_reg(MMC_DAT1);
  99                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 100                         if (!mmc_controller->slots[0].nomux)
 101                                 omap_cfg_reg(MMC_DAT2);
 102                         omap_cfg_reg(MMC_DAT3);
 103                 }
 104         }
 105
 106         /* Block 2 is on newer chips, and has many pinout options */
 107         if (cpu_is_omap16xx() && controller_nr == 1) {
 108                 if (!mmc_controller->slots[1].nomux) {
 109                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 110                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 111                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 112                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 113                         if (mmc_controller->slots[1].wires == 4) {
 114                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 115                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 116                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 117                         }
 118
 119                         /* These are needed for the level shifter */
 120                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 121                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 122                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 123                 }
 124
 125                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 126                 if (cpu_is_omap1710())
 127                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 128                                         MOD_CONF_CTRL_1);
 129         }
 130 }
 131
 132 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 133                         int nr_controllers)
 134 {
 135         int i;
 136
 137         for (i = 0; i < nr_controllers; i++) {
 138                 unsigned long base, size;
 139                 unsigned int irq = 0;
 140
 141                 if (!mmc_data[i])
 142                         continue;
 143
 144                 omap1_mmc_mux(mmc_data[i], i);
 145
 146                 switch (i) {
 147                 case 0:
 148                         base = OMAP1_MMC1_BASE;
 149                         irq = INT_MMC;
 150                         break;
 151                 case 1:
 152                         if (!cpu_is_omap16xx())
 153                                 return;
 154                         base = OMAP1_MMC2_BASE;
 155                         irq = INT_1610_MMC2;
 156                         break;
 157                 default:
 158                         continue;
 159                 }
 160                 size = OMAP1_MMC_SIZE;
 161
 162                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 163         };
 164 }
 165
 166 #endif
 167
 168 /*-------------------------------------------------------------------------*/
 169
 170 /* OMAP7xx SPI support */
 171 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 172
 173 struct platform_device omap_spi1 = {
 174         .name           = "omap1_spi100k",
 175         .id             = 1,
 176 };
 177
 178 struct platform_device omap_spi2 = {
 179         .name           = "omap1_spi100k",
 180         .id             = 2,
 181 };
 182
 183 static void omap_init_spi100k(void)
 184 {
 185         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 186         if (omap_spi1.dev.platform_data)
 187                 platform_device_register(&omap_spi1);
 188
 189         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 190         if (omap_spi2.dev.platform_data)
 191                 platform_device_register(&omap_spi2);
 192 }
 193
 194 #else
 195 static inline void omap_init_spi100k(void)
 196 {
 197 }
 198 #endif
 199
 200
 201 #define OMAP1_CAMERA_BASE       0xfffb6800
 202 #define OMAP1_CAMERA_IOSIZE     0x1c
 203
 204 static struct resource omap1_camera_resources[] = {
 205         [0] = {
 206                 .start  = OMAP1_CAMERA_BASE,
 207                 .end    = OMAP1_CAMERA_BASE + OMAP1_CAMERA_IOSIZE - 1,
 208                 .flags  = IORESOURCE_MEM,
 209         },
 210         [1] = {
 211                 .start  = INT_CAMERA,
 212                 .flags  = IORESOURCE_IRQ,
 213         },
 214 };
 215
 216 static u64 omap1_camera_dma_mask = DMA_BIT_MASK(32);
 217
 218 static struct platform_device omap1_camera_device = {
 219         .name           = "omap1-camera",
 220         .id             = 0, /* This is used to put cameras on this interface */
 221         .dev            = {
 222                 .dma_mask               = &omap1_camera_dma_mask,
 223                 .coherent_dma_mask      = DMA_BIT_MASK(32),
 224         },
 225         .num_resources  = ARRAY_SIZE(omap1_camera_resources),
 226         .resource       = omap1_camera_resources,
 227 };
 228
 229 void __init omap1_camera_init(void *info)
 230 {
 231         struct platform_device *dev = &omap1_camera_device;
 232         int ret;
 233
 234         dev->dev.platform_data = info;
 235
 236         ret = platform_device_register(dev);
 237         if (ret)
 238                 dev_err(&dev->dev, "unable to register device: %d\n", ret);
 239 }
 240
 241
 242 /*-------------------------------------------------------------------------*/
 243
 244 static inline void omap_init_sti(void) {}
 245
 246 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 247
 248 static struct platform_device omap_pcm = {
 249         .name   = "omap-pcm-audio",
 250         .id     = -1,
 251 };
 252
 253 OMAP_MCBSP_PLATFORM_DEVICE(1);
 254 OMAP_MCBSP_PLATFORM_DEVICE(2);
 255 OMAP_MCBSP_PLATFORM_DEVICE(3);
 256
 257 static void omap_init_audio(void)
 258 {
 259         platform_device_register(&omap_mcbsp1);
 260         platform_device_register(&omap_mcbsp2);
 261         if (!cpu_is_omap7xx())
 262                 platform_device_register(&omap_mcbsp3);
 263         platform_device_register(&omap_pcm);
 264 }
 265
 266 #else
 267 static inline void omap_init_audio(void) {}
 268 #endif
 269
 270 /*-------------------------------------------------------------------------*/
 271
 272 /*
 273  * This gets called after board-specific INIT_MACHINE, and initializes most
 274  * on-chip peripherals accessible on this board (except for few like USB):
 275  *
 276  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 277  *      code will have muxed GPIO pins and done "nonstandard" setup;
 278  *      that code could live in the boot loader.
 279  *  (b) Populating board-specific platform_data with the data drivers
 280  *      rely on to handle wiring variations.
 281  *  (c) Creating platform devices as meaningful on this board and
 282  *      with this kernel configuration.
 283  *
 284  * Claiming GPIOs, and setting their direction and initial values, is the
 285  * responsibility of the device drivers.  So is responding to probe().
 286  *
 287  * Board-specific knowledge like creating devices or pin setup is to be
 288  * kept out of drivers as much as possible.  In particular, pin setup
 289  * may be handled by the boot loader, and drivers should expect it will
 290  * normally have been done by the time they're probed.
 291  */
 292 static int __init omap1_init_devices(void)
 293 {
 294         if (!cpu_class_is_omap1())
 295                 return -ENODEV;
 296
 297         omap_sram_init();
 298         omap1_clk_late_init();
 299
 300         /* please keep these calls, and their implementations above,
 301          * in alphabetical order so they're easier to sort through.
 302          */
 303
 304         omap_init_mbox();
 305         omap_init_rtc();
 306         omap_init_spi100k();
 307         omap_init_sti();
 308         omap_init_audio();
 309
 310         return 0;
 311 }
 312 arch_initcall(omap1_init_devices);
 313
 314 #if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
 315
 316 static struct resource wdt_resources[] = {
 317         {
 318                 .start          = 0xfffeb000,
 319                 .end            = 0xfffeb07F,
 320                 .flags          = IORESOURCE_MEM,
 321         },
 322 };
 323
 324 static struct platform_device omap_wdt_device = {
 325         .name      = "omap_wdt",
 326         .id          = -1,
 327         .num_resources  = ARRAY_SIZE(wdt_resources),
 328         .resource       = wdt_resources,
 329 };
 330
 331 static int __init omap_init_wdt(void)
 332 {
 333         if (!cpu_is_omap16xx())
 334                 return -ENODEV;
 335
 336         return platform_device_register(&omap_wdt_device);
 337 }
 338 subsys_initcall(omap_init_wdt);
 339 #endif