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