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review.evervolv.com / android_kernel_htc_msm8960 / 1aba834da12989bb769d1dcbf6b0ea29f730c92c / . / arch / arm / plat-s3c / dev-i2c0.c
blob: 2c0128c77c6e98385a11fc9c157be8caca7f5b44 [file] [log] [blame]
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]1/* linux/arch/arm/plat-s3c/dev-i2c0.c
2 *
3 * Copyright 2008 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/map.h>
19
20#include <plat/regs-iic.h>
21#include <plat/iic.h>
22#include <plat/devs.h>
23#include <plat/cpu.h>
24
25static struct resource s3c_i2c_resource[] = {
26 [0] = {
27 .start = S3C_PA_IIC,
28 .end = S3C_PA_IIC + SZ_4K - 1,
29 .flags = IORESOURCE_MEM,
30 },
31 [1] = {
32 .start = IRQ_IIC,
33 .end = IRQ_IIC,
34 .flags = IORESOURCE_IRQ,
35 },
36};
37
38struct platform_device s3c_device_i2c0 = {
39 .name = "s3c2410-i2c",
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame^]40#ifdef CONFIG_S3C_DEV_I2C1
41 .id = 0,
42#else
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]43 .id = -1,
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame^]44#endif
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]45 .num_resources = ARRAY_SIZE(s3c_i2c_resource),
46 .resource = s3c_i2c_resource,
47};
48
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame^]49static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]50 .flags = 0,
51 .slave_addr = 0x10,
52 .bus_freq = 100*1000,
53 .max_freq = 400*1000,
54 .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
55};
56
57void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
58{
59 struct s3c2410_platform_i2c *npd;
60
61 if (!pd)
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame^]62 pd = &default_i2c_data0;
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]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}