LXR linux/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
  28static 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_IIC2,
  36                .end   = IRQ_IIC2,
  37                .flags = IORESOURCE_IRQ,
  38        },
  39};
  40
  41struct 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
  48static 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
  56void __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}
  71