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
  18 #include <mach/hardware.h>
  19 #include <asm/mach/map.h>
  20
  21 #include <plat/tc.h>
  22 #include <plat/board.h>
  23 #include <plat/mux.h>
  24 #include <mach/gpio.h>
  25 #include <plat/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         OMAP1_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           = "omap1-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 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
 108                         int controller_nr)
 109 {
 110         if (controller_nr == 0) {
 111                 if (cpu_is_omap7xx()) {
 112                         omap_cfg_reg(MMC_7XX_CMD);
 113                         omap_cfg_reg(MMC_7XX_CLK);
 114                         omap_cfg_reg(MMC_7XX_DAT0);
 115                 } else {
 116                         omap_cfg_reg(MMC_CMD);
 117                         omap_cfg_reg(MMC_CLK);
 118                         omap_cfg_reg(MMC_DAT0);
 119                 }
 120
 121                 if (cpu_is_omap1710()) {
 122                         omap_cfg_reg(M15_1710_MMC_CLKI);
 123                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 124                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 125                 }
 126                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 127                         omap_cfg_reg(MMC_DAT1);
 128                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 129                         if (!mmc_controller->slots[0].nomux)
 130                                 omap_cfg_reg(MMC_DAT2);
 131                         omap_cfg_reg(MMC_DAT3);
 132                 }
 133         }
 134
 135         /* Block 2 is on newer chips, and has many pinout options */
 136         if (cpu_is_omap16xx() && controller_nr == 1) {
 137                 if (!mmc_controller->slots[1].nomux) {
 138                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 139                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 140                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 141                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 142                         if (mmc_controller->slots[1].wires == 4) {
 143                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 144                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 145                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 146                         }
 147
 148                         /* These are needed for the level shifter */
 149                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 150                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 151                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 152                 }
 153
 154                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 155                 if (cpu_is_omap1710())
 156                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 157                                         MOD_CONF_CTRL_1);
 158         }
 159 }
 160
 161 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 162                         int nr_controllers)
 163 {
 164         int i;
 165
 166         for (i = 0; i < nr_controllers; i++) {
 167                 unsigned long base, size;
 168                 unsigned int irq = 0;
 169
 170                 if (!mmc_data[i])
 171                         continue;
 172
 173                 omap1_mmc_mux(mmc_data[i], i);
 174
 175                 switch (i) {
 176                 case 0:
 177                         base = OMAP1_MMC1_BASE;
 178                         irq = INT_MMC;
 179                         break;
 180                 case 1:
 181                         if (!cpu_is_omap16xx())
 182                                 return;
 183                         base = OMAP1_MMC2_BASE;
 184                         irq = INT_1610_MMC2;
 185                         break;
 186                 default:
 187                         continue;
 188                 }
 189                 size = OMAP1_MMC_SIZE;
 190
 191                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 192         };
 193 }
 194
 195 #endif
 196
 197 /*-------------------------------------------------------------------------*/
 198
 199 #if defined(CONFIG_OMAP_STI)
 200
 201 #define OMAP1_STI_BASE          0xfffea000
 202 #define OMAP1_STI_CHANNEL_BASE  (OMAP1_STI_BASE + 0x400)
 203
 204 static struct resource sti_resources[] = {
 205         {
 206                 .start          = OMAP1_STI_BASE,
 207                 .end            = OMAP1_STI_BASE + SZ_1K - 1,
 208                 .flags          = IORESOURCE_MEM,
 209         },
 210         {
 211                 .start          = OMAP1_STI_CHANNEL_BASE,
 212                 .end            = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
 213                 .flags          = IORESOURCE_MEM,
 214         },
 215         {
 216                 .start          = INT_1610_STI,
 217                 .flags          = IORESOURCE_IRQ,
 218         }
 219 };
 220
 221 static struct platform_device sti_device = {
 222         .name           = "sti",
 223         .id             = -1,
 224         .num_resources  = ARRAY_SIZE(sti_resources),
 225         .resource       = sti_resources,
 226 };
 227
 228 static inline void omap_init_sti(void)
 229 {
 230         platform_device_register(&sti_device);
 231 }
 232 #else
 233 static inline void omap_init_sti(void) {}
 234 #endif
 235
 236 /*-------------------------------------------------------------------------*/
 237
 238 /*
 239  * This gets called after board-specific INIT_MACHINE, and initializes most
 240  * on-chip peripherals accessible on this board (except for few like USB):
 241  *
 242  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 243  *      code will have muxed GPIO pins and done "nonstandard" setup;
 244  *      that code could live in the boot loader.
 245  *  (b) Populating board-specific platform_data with the data drivers
 246  *      rely on to handle wiring variations.
 247  *  (c) Creating platform devices as meaningful on this board and
 248  *      with this kernel configuration.
 249  *
 250  * Claiming GPIOs, and setting their direction and initial values, is the
 251  * responsibility of the device drivers.  So is responding to probe().
 252  *
 253  * Board-specific knowlege like creating devices or pin setup is to be
 254  * kept out of drivers as much as possible.  In particular, pin setup
 255  * may be handled by the boot loader, and drivers should expect it will
 256  * normally have been done by the time they're probed.
 257  */
 258 static int __init omap1_init_devices(void)
 259 {
 260         /* please keep these calls, and their implementations above,
 261          * in alphabetical order so they're easier to sort through.
 262          */
 263
 264         omap_init_mbox();
 265         omap_init_rtc();
 266         omap_init_sti();
 267
 268         return 0;
 269 }
 270 arch_initcall(omap1_init_devices);
 271