Root/arch/arm/plat-samsung/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/gfp.h>
15#include <linux/kernel.h>
16#include <linux/string.h>
17#include <linux/platform_device.h>
18
19#include <mach/irqs.h>
20#include <mach/map.h>
21
22#include <plat/regs-iic.h>
23#include <plat/iic.h>
24#include <plat/devs.h>
25#include <plat/cpu.h>
26
27static struct resource s3c_i2c_resource[] = {
28    [0] = {
29        .start = S3C_PA_IIC,
30        .end = S3C_PA_IIC + SZ_4K - 1,
31        .flags = IORESOURCE_MEM,
32    },
33    [1] = {
34        .start = IRQ_IIC,
35        .end = IRQ_IIC,
36        .flags = IORESOURCE_IRQ,
37    },
38};
39
40struct platform_device s3c_device_i2c0 = {
41    .name = "s3c2410-i2c",
42#ifdef CONFIG_S3C_DEV_I2C1
43    .id = 0,
44#else
45    .id = -1,
46#endif
47    .num_resources = ARRAY_SIZE(s3c_i2c_resource),
48    .resource = s3c_i2c_resource,
49};
50
51static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
52    .flags = 0,
53    .slave_addr = 0x10,
54    .frequency = 100*1000,
55    .sda_delay = 100,
56};
57
58void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
59{
60    struct s3c2410_platform_i2c *npd;
61
62    if (!pd)
63        pd = &default_i2c_data0;
64
65    npd = kmemdup(pd, sizeof(struct s3c2410_platform_i2c), GFP_KERNEL);
66    if (!npd)
67        printk(KERN_ERR "%s: no memory for platform data\n", __func__);
68    else if (!npd->cfg_gpio)
69        npd->cfg_gpio = s3c_i2c0_cfg_gpio;
70
71    s3c_device_i2c0.dev.platform_data = npd;
72}
73

Archive Download this file



interactive