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 #include <plat/mcbsp.h>
  29
  30 /*-------------------------------------------------------------------------*/
  31
  32 #if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
  33
  34 #define OMAP_RTC_BASE           0xfffb4800
  35
  36 static struct resource rtc_resources[] = {
  37         {
  38                 .start          = OMAP_RTC_BASE,
  39                 .end            = OMAP_RTC_BASE + 0x5f,
  40                 .flags          = IORESOURCE_MEM,
  41         },
  42         {
  43                 .start          = INT_RTC_TIMER,
  44                 .flags          = IORESOURCE_IRQ,
  45         },
  46         {
  47                 .start          = INT_RTC_ALARM,
  48                 .flags          = IORESOURCE_IRQ,
  49         },
  50 };
  51
  52 static struct platform_device omap_rtc_device = {
  53         .name           = "omap_rtc",
  54         .id             = -1,
  55         .num_resources  = ARRAY_SIZE(rtc_resources),
  56         .resource       = rtc_resources,
  57 };
  58
  59 static void omap_init_rtc(void)
  60 {
  61         (void) platform_device_register(&omap_rtc_device);
  62 }
  63 #else
  64 static inline void omap_init_rtc(void) {}
  65 #endif
  66
  67 #if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
  68
  69 #if defined(CONFIG_ARCH_OMAP15XX)
  70 #  define OMAP1_MBOX_SIZE       0x23
  71 #  define INT_DSP_MAILBOX1      INT_1510_DSP_MAILBOX1
  72 #elif defined(CONFIG_ARCH_OMAP16XX)
  73 #  define OMAP1_MBOX_SIZE       0x2f
  74 #  define INT_DSP_MAILBOX1      INT_1610_DSP_MAILBOX1
  75 #endif
  76
  77 #define OMAP1_MBOX_BASE         OMAP16XX_MAILBOX_BASE
  78
  79 static struct resource mbox_resources[] = {
  80         {
  81                 .start          = OMAP1_MBOX_BASE,
  82                 .end            = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE,
  83                 .flags          = IORESOURCE_MEM,
  84         },
  85         {
  86                 .start          = INT_DSP_MAILBOX1,
  87                 .flags          = IORESOURCE_IRQ,
  88         },
  89 };
  90
  91 static struct platform_device mbox_device = {
  92         .name           = "omap1-mailbox",
  93         .id             = -1,
  94         .num_resources  = ARRAY_SIZE(mbox_resources),
  95         .resource       = mbox_resources,
  96 };
  97
  98 static inline void omap_init_mbox(void)
  99 {
 100         platform_device_register(&mbox_device);
 101 }
 102 #else
 103 static inline void omap_init_mbox(void) { }
 104 #endif
 105
 106 /*-------------------------------------------------------------------------*/
 107
 108 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 109
 110 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
 111                         int controller_nr)
 112 {
 113         if (controller_nr == 0) {
 114                 if (cpu_is_omap7xx()) {
 115                         omap_cfg_reg(MMC_7XX_CMD);
 116                         omap_cfg_reg(MMC_7XX_CLK);
 117                         omap_cfg_reg(MMC_7XX_DAT0);
 118                 } else {
 119                         omap_cfg_reg(MMC_CMD);
 120                         omap_cfg_reg(MMC_CLK);
 121                         omap_cfg_reg(MMC_DAT0);
 122                 }
 123
 124                 if (cpu_is_omap1710()) {
 125                         omap_cfg_reg(M15_1710_MMC_CLKI);
 126                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
 127                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
 128                 }
 129                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
 130                         omap_cfg_reg(MMC_DAT1);
 131                         /* NOTE: DAT2 can be on W10 (here) or M15 */
 132                         if (!mmc_controller->slots[0].nomux)
 133                                 omap_cfg_reg(MMC_DAT2);
 134                         omap_cfg_reg(MMC_DAT3);
 135                 }
 136         }
 137
 138         /* Block 2 is on newer chips, and has many pinout options */
 139         if (cpu_is_omap16xx() && controller_nr == 1) {
 140                 if (!mmc_controller->slots[1].nomux) {
 141                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 142                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 143                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 144                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 145                         if (mmc_controller->slots[1].wires == 4) {
 146                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 147                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 148                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 149                         }
 150
 151                         /* These are needed for the level shifter */
 152                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 153                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 154                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 155                 }
 156
 157                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 158                 if (cpu_is_omap1710())
 159                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 160                                         MOD_CONF_CTRL_1);
 161         }
 162 }
 163
 164 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 165                         int nr_controllers)
 166 {
 167         int i;
 168
 169         for (i = 0; i < nr_controllers; i++) {
 170                 unsigned long base, size;
 171                 unsigned int irq = 0;
 172
 173                 if (!mmc_data[i])
 174                         continue;
 175
 176                 omap1_mmc_mux(mmc_data[i], i);
 177
 178                 switch (i) {
 179                 case 0:
 180                         base = OMAP1_MMC1_BASE;
 181                         irq = INT_MMC;
 182                         break;
 183                 case 1:
 184                         if (!cpu_is_omap16xx())
 185                                 return;
 186                         base = OMAP1_MMC2_BASE;
 187                         irq = INT_1610_MMC2;
 188                         break;
 189                 default:
 190                         continue;
 191                 }
 192                 size = OMAP1_MMC_SIZE;
 193
 194                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 195         };
 196 }
 197
 198 #endif
 199
 200 /*-------------------------------------------------------------------------*/
 201
 202 /* OMAP7xx SPI support */
 203 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 204
 205 struct platform_device omap_spi1 = {
 206         .name           = "omap1_spi100k",
 207         .id             = 1,
 208 };
 209
 210 struct platform_device omap_spi2 = {
 211         .name           = "omap1_spi100k",
 212         .id             = 2,
 213 };
 214
 215 static void omap_init_spi100k(void)
 216 {
 217         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 218         if (omap_spi1.dev.platform_data)
 219                 platform_device_register(&omap_spi1);
 220
 221         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 222         if (omap_spi2.dev.platform_data)
 223                 platform_device_register(&omap_spi2);
 224 }
 225
 226 #else
 227 static inline void omap_init_spi100k(void)
 228 {
 229 }
 230 #endif
 231
 232 /*-------------------------------------------------------------------------*/
 233
 234 #if defined(CONFIG_OMAP_STI)
 235
 236 #define OMAP1_STI_BASE          0xfffea000
 237 #define OMAP1_STI_CHANNEL_BASE  (OMAP1_STI_BASE + 0x400)
 238
 239 static struct resource sti_resources[] = {
 240         {
 241                 .start          = OMAP1_STI_BASE,
 242                 .end            = OMAP1_STI_BASE + SZ_1K - 1,
 243                 .flags          = IORESOURCE_MEM,
 244         },
 245         {
 246                 .start          = OMAP1_STI_CHANNEL_BASE,
 247                 .end            = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
 248                 .flags          = IORESOURCE_MEM,
 249         },
 250         {
 251                 .start          = INT_1610_STI,
 252                 .flags          = IORESOURCE_IRQ,
 253         }
 254 };
 255
 256 static struct platform_device sti_device = {
 257         .name           = "sti",
 258         .id             = -1,
 259         .num_resources  = ARRAY_SIZE(sti_resources),
 260         .resource       = sti_resources,
 261 };
 262
 263 static inline void omap_init_sti(void)
 264 {
 265         platform_device_register(&sti_device);
 266 }
 267 #else
 268 static inline void omap_init_sti(void) {}
 269 #endif
 270
 271 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 272
 273 static struct platform_device omap_pcm = {
 274         .name   = "omap-pcm-audio",
 275         .id     = -1,
 276 };
 277
 278 OMAP_MCBSP_PLATFORM_DEVICE(1);
 279 OMAP_MCBSP_PLATFORM_DEVICE(2);
 280 OMAP_MCBSP_PLATFORM_DEVICE(3);
 281
 282 static void omap_init_audio(void)
 283 {
 284         platform_device_register(&omap_mcbsp1);
 285         platform_device_register(&omap_mcbsp2);
 286         if (!cpu_is_omap7xx())
 287                 platform_device_register(&omap_mcbsp3);
 288         platform_device_register(&omap_pcm);
 289 }
 290
 291 #else
 292 static inline void omap_init_audio(void) {}
 293 #endif
 294
 295 /*-------------------------------------------------------------------------*/
 296
 297 /*
 298  * This gets called after board-specific INIT_MACHINE, and initializes most
 299  * on-chip peripherals accessible on this board (except for few like USB):
 300  *
 301  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 302  *      code will have muxed GPIO pins and done "nonstandard" setup;
 303  *      that code could live in the boot loader.
 304  *  (b) Populating board-specific platform_data with the data drivers
 305  *      rely on to handle wiring variations.
 306  *  (c) Creating platform devices as meaningful on this board and
 307  *      with this kernel configuration.
 308  *
 309  * Claiming GPIOs, and setting their direction and initial values, is the
 310  * responsibility of the device drivers.  So is responding to probe().
 311  *
 312  * Board-specific knowlege like creating devices or pin setup is to be
 313  * kept out of drivers as much as possible.  In particular, pin setup
 314  * may be handled by the boot loader, and drivers should expect it will
 315  * normally have been done by the time they're probed.
 316  */
 317 static int __init omap1_init_devices(void)
 318 {
 319         /* please keep these calls, and their implementations above,
 320          * in alphabetical order so they're easier to sort through.
 321          */
 322
 323         omap_init_mbox();
 324         omap_init_rtc();
 325         omap_init_spi100k();
 326         omap_init_sti();
 327         omap_init_audio();
 328
 329         return 0;
 330 }
 331 arch_initcall(omap1_init_devices);
 332