release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-samsung/dev-i2c2.c

   1 /* linux/arch/arm/plat-s3c/dev-i2c2.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * S3C series device definition for i2c device 2
   7  *
   8  * Based on plat-samsung/dev-i2c0.c
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #include <linux/gfp.h>
  16 #include <linux/kernel.h>
  17 #include <linux/string.h>
  18 #include <linux/platform_device.h>
  19
  20 #include <mach/irqs.h>
  21 #include <mach/map.h>
  22
  23 #include <plat/regs-iic.h>
  24 #include <plat/iic.h>
  25 #include <plat/devs.h>
  26 #include <plat/cpu.h>
  27
  28 static struct resource s3c_i2c_resource[] = {
  29         [0] = {
  30                 .start = S3C_PA_IIC2,
  31                 .end   = S3C_PA_IIC2 + SZ_4K - 1,
  32                 .flags = IORESOURCE_MEM,
  33         },
  34         [1] = {
  35                 .start = IRQ_CAN0,
  36                 .end   = IRQ_CAN0,
  37                 .flags = IORESOURCE_IRQ,
  38         },
  39 };
  40
  41 struct platform_device s3c_device_i2c2 = {
  42         .name             = "s3c2410-i2c",
  43         .id               = 2,
  44         .num_resources    = ARRAY_SIZE(s3c_i2c_resource),
  45         .resource         = s3c_i2c_resource,
  46 };
  47
  48 static struct s3c2410_platform_i2c default_i2c_data2 __initdata = {
  49         .flags          = 0,
  50         .bus_num        = 2,
  51         .slave_addr     = 0x10,
  52         .frequency      = 100*1000,
  53         .sda_delay      = 100,
  54 };
  55
  56 void __init s3c_i2c2_set_platdata(struct s3c2410_platform_i2c *pd)
  57 {
  58         struct s3c2410_platform_i2c *npd;
  59
  60         if (!pd)
  61                 pd = &default_i2c_data2;
  62
  63         npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
  64         if (!npd)
  65                 printk(KERN_ERR "%s: no memory for platform data\n", __func__);
  66         else if (!npd->cfg_gpio)
  67                 npd->cfg_gpio = s3c_i2c2_cfg_gpio;
  68
  69         s3c_device_i2c2.dev.platform_data = npd;
  70 }