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
  17 #include <mach/hardware.h>
  18 #include <asm/io.h>
  19 #include <asm/mach/map.h>
  20
  21 #include <mach/tc.h>
  22 #include <mach/board.h>
  23 #include <mach/mux.h>
  24 #include <mach/gpio.h>
  25 #include <mach/mmc.h>
  26
  27 /*-------------------------------------------------------------------------*/
  28
  29 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  30
  31 #define OMAP_RTC_BASE           0xfffb4800
  32
  33 static struct resource rtc_resources[] = {
  34         {
  35                 .start          = OMAP_RTC_BASE,
  36                 .end            = OMAP_RTC_BASE + 0x5f,
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start          = INT_RTC_TIMER,
  41                 .flags          = IORESOURCE_IRQ,
  42         },
  43         {
  44                 .start          = INT_RTC_ALARM,
  45                 .flags          = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct platform_device omap_rtc_device = {
  50         .name           = "omap_rtc",
  51         .id             = -1,
  52         .num_resources  = ARRAY_SIZE(rtc_resources),
  53         .resource       = rtc_resources,
  54 };
  55
  56 static void omap_init_rtc(void)
  57 {
  58         (void) platform_device_register(&omap_rtc_device);
  59 }
  60 #else
  61 static inline void omap_init_rtc(void) {}
  62 #endif
  63
  64 #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  65
  66 #if defined(CONFIG_ARCH_OMAP15XX)
  67 #  define OMAP1_MBOX_SIZE       0x23
  68 #  define INT_DSP_MAILBOX1      INT_1510_DSP_MAILBOX1
  69 #elif defined(CONFIG_ARCH_OMAP16XX)
  70 #  define OMAP1_MBOX_SIZE       0x2f
  71 #  define INT_DSP_MAILBOX1      INT_1610_DSP_MAILBOX1
  72 #endif
  73
  74 #define OMAP1_MBOX_BASE         IO_ADDRESS(OMAP16XX_MAILBOX_BASE)
  75
  76 static struct resource mbox_resources[] = {
  77         {
  78                 .start          = OMAP1_MBOX_BASE,
  79                 .end            = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE,
  80                 .flags          = IORESOURCE_MEM,
  81         },
  82         {
  83                 .start          = INT_DSP_MAILBOX1,
  84                 .flags          = IORESOURCE_IRQ,
  85         },
  86 };
  87
  88 static struct platform_device mbox_device = {
  89         .name           = "mailbox",
  90         .id             = -1,
  91         .num_resources  = ARRAY_SIZE(mbox_resources),
  92         .resource       = mbox_resources,
  93 };
  94
  95 static inline void omap_init_mbox(void)
  96 {
  97         platform_device_register(&mbox_device);
  98 }
  99 #else
 100 static inline void omap_init_mbox(void) { }
 101 #endif
 102
 103 /*-------------------------------------------------------------------------*/
 104
 105 #if     defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 106
 107 #define OMAP1_MMC1_BASE         0xfffb7800
 108 #define OMAP1_MMC1_END          (OMAP1_MMC1_BASE + 0x7f)
 109 #define OMAP1_MMC1_INT          INT_MMC
 110
 111 #define OMAP1_MMC2_BASE         0xfffb7c00      /* omap16xx only */
 112 #define OMAP1_MMC2_END          (OMAP1_MMC2_BASE + 0x7f)
 113 #define OMAP1_MMC2_INT          INT_1610_MMC2
 114
 115 static u64 omap1_mmc1_dmamask = 0xffffffff;
 116
 117 static struct resource omap1_mmc1_resources[] = {
 118         {
 119                 .start          = OMAP1_MMC1_BASE,
 120                 .end            = OMAP1_MMC1_END,
 121                 .flags          = IORESOURCE_MEM,
 122         },
 123         {
 124                 .start          = OMAP1_MMC1_INT,
 125                 .flags          = IORESOURCE_IRQ,
 126         },
 127 };
 128
 129 static struct platform_device omap1_mmc1_device = {
 130         .name           = "mmci-omap",
 131         .id             = 1,
 132         .dev = {
 133                 .dma_mask       = &omap1_mmc1_dmamask,
 134         },
 135         .num_resources  = ARRAY_SIZE(omap1_mmc1_resources),
 136         .resource       = omap1_mmc1_resources,
 137 };
 138
 139 #if defined(CONFIG_ARCH_OMAP16XX)
 140
 141 static u64 omap1_mmc2_dmamask = 0xffffffff;
 142
 143 static struct resource omap1_mmc2_resources[] = {
 144         {
 145                 .start          = OMAP1_MMC2_BASE,
 146                 .end            = OMAP1_MMC2_END,
 147                 .flags          = IORESOURCE_MEM,
 148         },
 149         {
 150                 .start          = OMAP1_MMC2_INT,
 151                 .flags          = IORESOURCE_IRQ,
 152         },
 153 };
 154
 155 static struct platform_device omap1_mmc2_device = {
 156         .name           = "mmci-omap",
 157         .id             = 2,
 158         .dev = {
 159                 .dma_mask       = &omap1_mmc2_dmamask,
 160         },
 161         .num_resources  = ARRAY_SIZE(omap1_mmc2_resources),
 162         .resource       = omap1_mmc2_resources,
 163 };
 164 #define OMAP1_MMC2_DEVICE       &omap1_mmc2_device
 165 #else
 166 #define OMAP1_MMC2_DEVICE       &omap1_mmc1_device      /* Dummy */
 167 #endif
 168
 169 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *info)
 170 {
 171         if (info->slots[0].enabled) {
 172                 omap_cfg_reg(MMC_CMD);
 173                 omap_cfg_reg(MMC_CLK);
 174                 omap_cfg_reg(MMC_DAT0);
 175                 if (cpu_is_omap1710()) {
 176                         omap_cfg_reg(M15_1710_MMC_CLKI);
 177                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 178                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 179                 }
 180                 if (info->slots[0].wire4) {
 181                         omap_cfg_reg(MMC_DAT1);
 182                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 183                         if (!info->slots[0].nomux)
 184                                 omap_cfg_reg(MMC_DAT2);
 185                         omap_cfg_reg(MMC_DAT3);
 186                 }
 187         }
 188
 189         /* Block 2 is on newer chips, and has many pinout options */
 190         if (cpu_is_omap16xx() && info->slots[1].enabled) {
 191                 if (!info->slots[1].nomux) {
 192                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 193                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 194                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 195                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 196                         if (info->slots[1].wire4) {
 197                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 198                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 199                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 200                         }
 201
 202                         /* These are needed for the level shifter */
 203                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 204                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 205                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 206                 }
 207
 208                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 209                 if (cpu_is_omap1710())
 210                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 211                                         MOD_CONF_CTRL_1);
 212         }
 213 }
 214
 215 void omap1_init_mmc(struct omap_mmc_platform_data *info)
 216 {
 217         if (!info)
 218                 return;
 219
 220         omap1_mmc_mux(info);
 221         platform_set_drvdata(&omap1_mmc1_device, info);
 222
 223         if (cpu_is_omap16xx())
 224                 platform_set_drvdata(OMAP1_MMC2_DEVICE, info);
 225
 226         omap_init_mmc(info, &omap1_mmc1_device, OMAP1_MMC2_DEVICE);
 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_sti();
 301
 302         return 0;
 303 }
 304 arch_initcall(omap1_init_devices);
 305