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 extern void omap_nop_release(struct device *dev);
  29
  30 /*-------------------------------------------------------------------------*/
  31
  32 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  33
  34 #define OMAP2_I2C_BASE2         0x48072000
  35 #define OMAP2_I2C_INT2          57
  36
  37 static struct resource i2c_resources2[] = {
  38         {
  39                 .start          = OMAP2_I2C_BASE2,
  40                 .end            = OMAP2_I2C_BASE2 + 0x3f,
  41                 .flags          = IORESOURCE_MEM,
  42         },
  43         {
  44                 .start          = OMAP2_I2C_INT2,
  45                 .flags          = IORESOURCE_IRQ,
  46         },
  47 };
  48
  49 static struct platform_device omap_i2c_device2 = {
  50         .name           = "i2c_omap",
  51         .id             = 2,
  52         .dev = {
  53                 .release        = omap_nop_release,
  54         },
  55         .num_resources  = ARRAY_SIZE(i2c_resources2),
  56         .resource       = i2c_resources2,
  57 };
  58
  59 /* See also arch/arm/plat-omap/devices.c for first I2C on 24xx */
  60 static void omap_init_i2c(void)
  61 {
  62         /* REVISIT: Second I2C not in use on H4? */
  63         if (machine_is_omap_h4())
  64                 return;
  65
  66         omap_cfg_reg(J15_24XX_I2C2_SCL);
  67         omap_cfg_reg(H19_24XX_I2C2_SDA);
  68         (void) platform_device_register(&omap_i2c_device2);
  69 }
  70
  71 #else
  72
  73 static void omap_init_i2c(void) {}
  74
  75 #endif
  76
  77 /*-------------------------------------------------------------------------*/
  78
  79 static int __init omap2_init_devices(void)
  80 {
  81         /* please keep these calls, and their implementations above,
  82          * in alphabetical order so they're easier to sort through.
  83          */
  84         omap_init_i2c();
  85
  86         return 0;
  87 }
  88 arch_initcall(omap2_init_devices);
  89