Root/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

Archive Download this file



interactive