arch/arm/plat-samsung/dev-i2c4.c

   1 /* linux/arch/arm/plat-samsung/dev-i2c4.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com/
   5  *
   6  * S5P series device definition for i2c device 3
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/gfp.h>
  14 #include <linux/kernel.h>
  15 #include <linux/string.h>
  16 #include <linux/platform_device.h>
  17
  18 #include <mach/irqs.h>
  19 #include <mach/map.h>
  20
  21 #include <plat/regs-iic.h>
  22 #include <plat/iic.h>
  23 #include <plat/devs.h>
  24 #include <plat/cpu.h>
  25
  26 static struct resource s3c_i2c_resource[] = {
  27         [0] = {
  28                 .start  = S3C_PA_IIC4,
  29                 .end    = S3C_PA_IIC4 + SZ_4K - 1,
  30                 .flags  = IORESOURCE_MEM,
  31         },
  32         [1] = {
  33                 .start  = IRQ_IIC4,
  34                 .end    = IRQ_IIC4,
  35                 .flags  = IORESOURCE_IRQ,
  36         },
  37 };
  38
  39 struct platform_device s3c_device_i2c4 = {
  40         .name           = "s3c2440-i2c",
  41         .id             = 4,
  42         .num_resources  = ARRAY_SIZE(s3c_i2c_resource),
  43         .resource       = s3c_i2c_resource,
  44 };
  45
  46 static struct s3c2410_platform_i2c default_i2c_data4 __initdata = {
  47         .flags          = 0,
  48         .bus_num        = 4,
  49         .slave_addr     = 0x10,
  50         .frequency      = 100*1000,
  51         .sda_delay      = 100,
  52 };
  53
  54 void __init s3c_i2c4_set_platdata(struct s3c2410_platform_i2c *pd)
  55 {
  56         struct s3c2410_platform_i2c *npd;
  57
  58         if (!pd)
  59                 pd = &default_i2c_data4;
  60
  61         npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
  62         if (!npd)
  63                 printk(KERN_ERR "%s: no memory for platform data\n", __func__);
  64         else if (!npd->cfg_gpio)
  65                 npd->cfg_gpio = s3c_i2c4_cfg_gpio;
  66
  67         s3c_device_i2c4.dev.platform_data = npd;
  68 }