LXR linux/arch/arm/plat-s3c/dev-i2c0.c

   1/* linux/arch/arm/plat-s3c/dev-i2c0.c
   2 *
   3 * Copyright 2008,2009 Simtec Electronics
   4 *      Ben Dooks <ben@simtec.co.uk>
   5 *      http://armlinux.simtec.co.uk/
   6 *
   7 * S3C series device definition for i2c device 0
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License version 2 as
  11 * published by the Free Software Foundation.
  12*/
  13
  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
  26static struct resource s3c_i2c_resource[] = {
  27        [0] = {
  28                .start = S3C_PA_IIC,
  29                .end   = S3C_PA_IIC + SZ_4K - 1,
  30                .flags = IORESOURCE_MEM,
  31        },
  32        [1] = {
  33                .start = IRQ_IIC,
  34                .end   = IRQ_IIC,
  35                .flags = IORESOURCE_IRQ,
  36        },
  37};
  38
  39struct platform_device s3c_device_i2c0 = {
  40        .name             = "s3c2410-i2c",
  41#ifdef CONFIG_S3C_DEV_I2C1
  42        .id               = 0,
  43#else
  44        .id               = -1,
  45#endif
  46        .num_resources    = ARRAY_SIZE(s3c_i2c_resource),
  47        .resource         = s3c_i2c_resource,
  48};
  49
  50static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
  51        .flags          = 0,
  52        .slave_addr     = 0x10,
  53        .frequency      = 100*1000,
  54        .sda_delay      = 100,
  55};
  56
  57void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
  58{
  59        struct s3c2410_platform_i2c *npd;
  60
  61        if (!pd)
  62                pd = &default_i2c_data0;
  63
  64        npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
  65        if (!npd)
  66                printk(KERN_ERR "%s: no memory for platform data\n", __func__);
  67        else if (!npd->cfg_gpio)
  68                npd->cfg_gpio = s3c_i2c0_cfg_gpio;
  69
  70        s3c_device_i2c0.dev.platform_data = npd;
  71}
  72