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/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/spi/spi.h>
  18
  19 #include <mach/hardware.h>
  20 #include <asm/mach/map.h>
  21
  22 #include <plat/tc.h>
  23 #include <plat/board.h>
  24 #include <plat/mux.h>
  25 #include <mach/gpio.h>
  26 #include <plat/mmc.h>
  27 #include <plat/omap7xx.h>
  28
  29 /*-------------------------------------------------------------------------*/
  30
  31 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  32
  33 #define OMAP_RTC_BASE           0xfffb4800
  34
  35 static struct resource rtc_resources[] = {
  36         {
  37                 .start          = OMAP_RTC_BASE,
  38                 .end            = OMAP_RTC_BASE + 0x5f,
  39                 .flags          = IORESOURCE_MEM,
  40         },
  41         {
  42                 .start          = INT_RTC_TIMER,
  43                 .flags          = IORESOURCE_IRQ,
  44         },
  45         {
  46                 .start          = INT_RTC_ALARM,
  47                 .flags          = IORESOURCE_IRQ,
  48         },
  49 };
  50
  51 static struct platform_device omap_rtc_device = {
  52         .name           = "omap_rtc",
  53         .id             = -1,
  54         .num_resources  = ARRAY_SIZE(rtc_resources),
  55         .resource       = rtc_resources,
  56 };
  57
  58 static void omap_init_rtc(void)
  59 {
  60         (void) platform_device_register(&omap_rtc_device);
  61 }
  62 #else
  63 static inline void omap_init_rtc(void) {}
  64 #endif
  65
  66 #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  67
  68 #if defined(CONFIG_ARCH_OMAP15XX)
  69 #  define OMAP1_MBOX_SIZE       0x23
  70 #  define INT_DSP_MAILBOX1      INT_1510_DSP_MAILBOX1
  71 #elif defined(CONFIG_ARCH_OMAP16XX)
  72 #  define OMAP1_MBOX_SIZE       0x2f
  73 #  define INT_DSP_MAILBOX1      INT_1610_DSP_MAILBOX1
  74 #endif
  75
  76 #define OMAP1_MBOX_BASE         OMAP1_IO_ADDRESS(OMAP16XX_MAILBOX_BASE)
  77
  78 static struct resource mbox_resources[] = {
  79         {
  80                 .start          = OMAP1_MBOX_BASE,
  81                 .end            = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84         {
  85                 .start          = INT_DSP_MAILBOX1,
  86                 .flags          = IORESOURCE_IRQ,
  87         },
  88 };
  89
  90 static struct platform_device mbox_device = {
  91         .name           = "omap1-mailbox",
  92         .id             = -1,
  93         .num_resources  = ARRAY_SIZE(mbox_resources),
  94         .resource       = mbox_resources,
  95 };
  96
  97 static inline void omap_init_mbox(void)
  98 {
  99         platform_device_register(&mbox_device);
 100 }
 101 #else
 102 static inline void omap_init_mbox(void) { }
 103 #endif
 104
 105 /*-------------------------------------------------------------------------*/
 106
 107 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 108
 109 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
 110                         int controller_nr)
 111 {
 112         if (controller_nr == 0) {
 113                 if (cpu_is_omap7xx()) {
 114                         omap_cfg_reg(MMC_7XX_CMD);
 115                         omap_cfg_reg(MMC_7XX_CLK);
 116                         omap_cfg_reg(MMC_7XX_DAT0);
 117                 } else {
 118                         omap_cfg_reg(MMC_CMD);
 119                         omap_cfg_reg(MMC_CLK);
 120                         omap_cfg_reg(MMC_DAT0);
 121                 }
 122
 123                 if (cpu_is_omap1710()) {
 124                         omap_cfg_reg(M15_1710_MMC_CLKI);
 125                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 126                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 127                 }
 128                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 129                         omap_cfg_reg(MMC_DAT1);
 130                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 131                         if (!mmc_controller->slots[0].nomux)
 132                                 omap_cfg_reg(MMC_DAT2);
 133                         omap_cfg_reg(MMC_DAT3);
 134                 }
 135         }
 136
 137         /* Block 2 is on newer chips, and has many pinout options */
 138         if (cpu_is_omap16xx() && controller_nr == 1) {
 139                 if (!mmc_controller->slots[1].nomux) {
 140                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 141                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 142                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 143                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 144                         if (mmc_controller->slots[1].wires == 4) {
 145                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 146                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 147                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 148                         }
 149
 150                         /* These are needed for the level shifter */
 151                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 152                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 153                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 154                 }
 155
 156                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 157                 if (cpu_is_omap1710())
 158                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 159                                         MOD_CONF_CTRL_1);
 160         }
 161 }
 162
 163 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 164                         int nr_controllers)
 165 {
 166         int i;
 167
 168         for (i = 0; i < nr_controllers; i++) {
 169                 unsigned long base, size;
 170                 unsigned int irq = 0;
 171
 172                 if (!mmc_data[i])
 173                         continue;
 174
 175                 omap1_mmc_mux(mmc_data[i], i);
 176
 177                 switch (i) {
 178                 case 0:
 179                         base = OMAP1_MMC1_BASE;
 180                         irq = INT_MMC;
 181                         break;
 182                 case 1:
 183                         if (!cpu_is_omap16xx())
 184                                 return;
 185                         base = OMAP1_MMC2_BASE;
 186                         irq = INT_1610_MMC2;
 187                         break;
 188                 default:
 189                         continue;
 190                 }
 191                 size = OMAP1_MMC_SIZE;
 192
 193                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 194         };
 195 }
 196
 197 #endif
 198
 199 /*-------------------------------------------------------------------------*/
 200
 201 /* OMAP7xx SPI support */
 202 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 203
 204 struct platform_device omap_spi1 = {
 205         .name           = "omap1_spi100k",
 206         .id             = 1,
 207 };
 208
 209 struct platform_device omap_spi2 = {
 210         .name           = "omap1_spi100k",
 211         .id             = 2,
 212 };
 213
 214 static void omap_init_spi100k(void)
 215 {
 216         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 217         if (omap_spi1.dev.platform_data)
 218                 platform_device_register(&omap_spi1);
 219
 220         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 221         if (omap_spi2.dev.platform_data)
 222                 platform_device_register(&omap_spi2);
 223 }
 224
 225 #else
 226 static inline void omap_init_spi100k(void)
 227 {
 228 }
 229 #endif
 230
 231 /*-------------------------------------------------------------------------*/
 232
 233 #if defined(CONFIG_OMAP_STI)
 234
 235 #define OMAP1_STI_BASE          0xfffea000
 236 #define OMAP1_STI_CHANNEL_BASE  (OMAP1_STI_BASE + 0x400)
 237
 238 static struct resource sti_resources[] = {
 239         {
 240                 .start          = OMAP1_STI_BASE,
 241                 .end            = OMAP1_STI_BASE + SZ_1K - 1,
 242                 .flags          = IORESOURCE_MEM,
 243         },
 244         {
 245                 .start          = OMAP1_STI_CHANNEL_BASE,
 246                 .end            = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
 247                 .flags          = IORESOURCE_MEM,
 248         },
 249         {
 250                 .start          = INT_1610_STI,
 251                 .flags          = IORESOURCE_IRQ,
 252         }
 253 };
 254
 255 static struct platform_device sti_device = {
 256         .name           = "sti",
 257         .id             = -1,
 258         .num_resources  = ARRAY_SIZE(sti_resources),
 259         .resource       = sti_resources,
 260 };
 261
 262 static inline void omap_init_sti(void)
 263 {
 264         platform_device_register(&sti_device);
 265 }
 266 #else
 267 static inline void omap_init_sti(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 knowlege 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         /* please keep these calls, and their implementations above,
 295          * in alphabetical order so they're easier to sort through.
 296          */
 297
 298         omap_init_mbox();
 299         omap_init_rtc();
 300         omap_init_spi100k();
 301         omap_init_sti();
 302
 303         return 0;
 304 }
 305 arch_initcall(omap1_init_devices);
 306