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 static inline void omap_init_mbox(void) { }
  68
  69 /*-------------------------------------------------------------------------*/
  70
  71 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
  72
  73 static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
  74                         int controller_nr)
  75 {
  76         if (controller_nr == 0) {
  77                 if (cpu_is_omap7xx()) {
  78                         omap_cfg_reg(MMC_7XX_CMD);
  79                         omap_cfg_reg(MMC_7XX_CLK);
  80                         omap_cfg_reg(MMC_7XX_DAT0);
  81                 } else {
  82                         omap_cfg_reg(MMC_CMD);
  83                         omap_cfg_reg(MMC_CLK);
  84                         omap_cfg_reg(MMC_DAT0);
  85                 }
  86
  87                 if (cpu_is_omap1710()) {
  88                         omap_cfg_reg(M15_1710_MMC_CLKI);
  89                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
  90                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
  91                 }
  92                 if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
  93                         omap_cfg_reg(MMC_DAT1);
  94                         /* NOTE: DAT2 can be on W10 (here) or M15 */
  95                         if (!mmc_controller->slots[0].nomux)
  96                                 omap_cfg_reg(MMC_DAT2);
  97                         omap_cfg_reg(MMC_DAT3);
  98                 }
  99         }
 100
 101         /* Block 2 is on newer chips, and has many pinout options */
 102         if (cpu_is_omap16xx() && controller_nr == 1) {
 103                 if (!mmc_controller->slots[1].nomux) {
 104                         omap_cfg_reg(Y8_1610_MMC2_CMD);
 105                         omap_cfg_reg(Y10_1610_MMC2_CLK);
 106                         omap_cfg_reg(R18_1610_MMC2_CLKIN);
 107                         omap_cfg_reg(W8_1610_MMC2_DAT0);
 108                         if (mmc_controller->slots[1].wires == 4) {
 109                                 omap_cfg_reg(V8_1610_MMC2_DAT1);
 110                                 omap_cfg_reg(W15_1610_MMC2_DAT2);
 111                                 omap_cfg_reg(R10_1610_MMC2_DAT3);
 112                         }
 113
 114                         /* These are needed for the level shifter */
 115                         omap_cfg_reg(V9_1610_MMC2_CMDDIR);
 116                         omap_cfg_reg(V5_1610_MMC2_DATDIR0);
 117                         omap_cfg_reg(W19_1610_MMC2_DATDIR1);
 118                 }
 119
 120                 /* Feedback clock must be set on OMAP-1710 MMC2 */
 121                 if (cpu_is_omap1710())
 122                         omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
 123                                         MOD_CONF_CTRL_1);
 124         }
 125 }
 126
 127 void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
 128                         int nr_controllers)
 129 {
 130         int i;
 131
 132         for (i = 0; i < nr_controllers; i++) {
 133                 unsigned long base, size;
 134                 unsigned int irq = 0;
 135
 136                 if (!mmc_data[i])
 137                         continue;
 138
 139                 omap1_mmc_mux(mmc_data[i], i);
 140
 141                 switch (i) {
 142                 case 0:
 143                         base = OMAP1_MMC1_BASE;
 144                         irq = INT_MMC;
 145                         break;
 146                 case 1:
 147                         if (!cpu_is_omap16xx())
 148                                 return;
 149                         base = OMAP1_MMC2_BASE;
 150                         irq = INT_1610_MMC2;
 151                         break;
 152                 default:
 153                         continue;
 154                 }
 155                 size = OMAP1_MMC_SIZE;
 156
 157                 omap_mmc_add("mmci-omap", i, base, size, irq, mmc_data[i]);
 158         };
 159 }
 160
 161 #endif
 162
 163 /*-------------------------------------------------------------------------*/
 164
 165 /* OMAP7xx SPI support */
 166 #if defined(CONFIG_SPI_OMAP_100K) || defined(CONFIG_SPI_OMAP_100K_MODULE)
 167
 168 struct platform_device omap_spi1 = {
 169         .name           = "omap1_spi100k",
 170         .id             = 1,
 171 };
 172
 173 struct platform_device omap_spi2 = {
 174         .name           = "omap1_spi100k",
 175         .id             = 2,
 176 };
 177
 178 static void omap_init_spi100k(void)
 179 {
 180         omap_spi1.dev.platform_data = ioremap(OMAP7XX_SPI1_BASE, 0x7ff);
 181         if (omap_spi1.dev.platform_data)
 182                 platform_device_register(&omap_spi1);
 183
 184         omap_spi2.dev.platform_data = ioremap(OMAP7XX_SPI2_BASE, 0x7ff);
 185         if (omap_spi2.dev.platform_data)
 186                 platform_device_register(&omap_spi2);
 187 }
 188
 189 #else
 190 static inline void omap_init_spi100k(void)
 191 {
 192 }
 193 #endif
 194
 195 /*-------------------------------------------------------------------------*/
 196
 197 static inline void omap_init_sti(void) {}
 198
 199 #if defined(CONFIG_SND_SOC) || defined(CONFIG_SND_SOC_MODULE)
 200
 201 static struct platform_device omap_pcm = {
 202         .name   = "omap-pcm-audio",
 203         .id     = -1,
 204 };
 205
 206 OMAP_MCBSP_PLATFORM_DEVICE(1);
 207 OMAP_MCBSP_PLATFORM_DEVICE(2);
 208 OMAP_MCBSP_PLATFORM_DEVICE(3);
 209
 210 static void omap_init_audio(void)
 211 {
 212         platform_device_register(&omap_mcbsp1);
 213         platform_device_register(&omap_mcbsp2);
 214         if (!cpu_is_omap7xx())
 215                 platform_device_register(&omap_mcbsp3);
 216         platform_device_register(&omap_pcm);
 217 }
 218
 219 #else
 220 static inline void omap_init_audio(void) {}
 221 #endif
 222
 223 /*-------------------------------------------------------------------------*/
 224
 225 /*
 226  * This gets called after board-specific INIT_MACHINE, and initializes most
 227  * on-chip peripherals accessible on this board (except for few like USB):
 228  *
 229  *  (a) Does any "standard config" pin muxing needed.  Board-specific
 230  *      code will have muxed GPIO pins and done "nonstandard" setup;
 231  *      that code could live in the boot loader.
 232  *  (b) Populating board-specific platform_data with the data drivers
 233  *      rely on to handle wiring variations.
 234  *  (c) Creating platform devices as meaningful on this board and
 235  *      with this kernel configuration.
 236  *
 237  * Claiming GPIOs, and setting their direction and initial values, is the
 238  * responsibility of the device drivers.  So is responding to probe().
 239  *
 240  * Board-specific knowlege like creating devices or pin setup is to be
 241  * kept out of drivers as much as possible.  In particular, pin setup
 242  * may be handled by the boot loader, and drivers should expect it will
 243  * normally have been done by the time they're probed.
 244  */
 245 static int __init omap1_init_devices(void)
 246 {
 247         /* please keep these calls, and their implementations above,
 248          * in alphabetical order so they're easier to sort through.
 249          */
 250
 251         omap_init_mbox();
 252         omap_init_rtc();
 253         omap_init_spi100k();
 254         omap_init_sti();
 255         omap_init_audio();
 256
 257         return 0;
 258 }
 259 arch_initcall(omap1_init_devices);
 260