arch/arm/mach-omap2/devices.c

   1 /*
   2  * linux/arch/arm/mach-omap2/devices.c
   3  *
   4  * OMAP2 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/config.h>
  13 #include <linux/module.h>
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17
  18 #include <asm/hardware.h>
  19 #include <asm/io.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/map.h>
  22
  23 #include <asm/arch/tc.h>
  24 #include <asm/arch/board.h>
  25 #include <asm/arch/mux.h>
  26 #include <asm/arch/gpio.h>
  27
  28 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  29
  30 #define OMAP2_I2C_BASE2         0x48072000
  31 #define OMAP2_I2C_INT2          57
  32
  33 static struct resource i2c_resources2[] = {
  34         {
  35                 .start          = OMAP2_I2C_BASE2,
  36                 .end            = OMAP2_I2C_BASE2 + 0x3f,
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39         {
  40                 .start          = OMAP2_I2C_INT2,
  41                 .flags          = IORESOURCE_IRQ,
  42         },
  43 };
  44
  45 static struct platform_device omap_i2c_device2 = {
  46         .name           = "i2c_omap",
  47         .id             = 2,
  48         .num_resources  = ARRAY_SIZE(i2c_resources2),
  49         .resource       = i2c_resources2,
  50 };
  51
  52 /* See also arch/arm/plat-omap/devices.c for first I2C on 24xx */
  53 static void omap_init_i2c(void)
  54 {
  55         /* REVISIT: Second I2C not in use on H4? */
  56         if (machine_is_omap_h4())
  57                 return;
  58
  59         omap_cfg_reg(J15_24XX_I2C2_SCL);
  60         omap_cfg_reg(H19_24XX_I2C2_SDA);
  61         (void) platform_device_register(&omap_i2c_device2);
  62 }
  63
  64 #else
  65
  66 static void omap_init_i2c(void) {}
  67
  68 #endif
  69
  70 #if defined(CONFIG_OMAP_STI)
  71
  72 #define OMAP2_STI_BASE          IO_ADDRESS(0x48068000)
  73 #define OMAP2_STI_CHANNEL_BASE  0x54000000
  74 #define OMAP2_STI_IRQ           4
  75
  76 static struct resource sti_resources[] = {
  77         {
  78                 .start          = OMAP2_STI_BASE,
  79                 .end            = OMAP2_STI_BASE + 0x7ff,
  80                 .flags          = IORESOURCE_MEM,
  81         },
  82         {
  83                 .start          = OMAP2_STI_CHANNEL_BASE,
  84                 .end            = OMAP2_STI_CHANNEL_BASE + SZ_64K - 1,
  85                 .flags          = IORESOURCE_MEM,
  86         },
  87         {
  88                 .start          = OMAP2_STI_IRQ,
  89                 .flags          = IORESOURCE_IRQ,
  90         }
  91 };
  92
  93 static struct platform_device sti_device = {
  94         .name           = "sti",
  95         .id             = -1,
  96         .num_resources  = ARRAY_SIZE(sti_resources),
  97         .resource       = sti_resources,
  98 };
  99
 100 static inline void omap_init_sti(void)
 101 {
 102         platform_device_register(&sti_device);
 103 }
 104 #else
 105 static inline void omap_init_sti(void) {}
 106 #endif
 107
 108 /*-------------------------------------------------------------------------*/
 109
 110 static int __init omap2_init_devices(void)
 111 {
 112         /* please keep these calls, and their implementations above,
 113          * in alphabetical order so they're easier to sort through.
 114          */
 115         omap_init_i2c();
 116         omap_init_sti();
 117
 118         return 0;
 119 }
 120 arch_initcall(omap2_init_devices);
 121