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gerrit-public.fairphone.software / kernel / msm / aa11e38ce6fe8846fec046a95cecd5d4690c48cd / . / arch / arm / plat-s3c / dev-i2c0.c
blob: fe327074037ea05d4d996cbe52be7ab9a2deae78 [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
Russell King80b02c12009-01-08 10:01:47 +0000[diff] [blame]18#include <mach/irqs.h>
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]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",
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame]41#ifdef CONFIG_S3C_DEV_I2C1
42 .id = 0,
43#else
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]44 .id = -1,
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame]45#endif
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]46 .num_resources = ARRAY_SIZE(s3c_i2c_resource),
47 .resource = s3c_i2c_resource,
48};
49
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame]50static struct s3c2410_platform_i2c default_i2c_data0 __initdata = {
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]51 .flags = 0,
52 .slave_addr = 0x10,
53 .bus_freq = 100*1000,
54 .max_freq = 400*1000,
55 .sda_delay = S3C2410_IICLC_SDA_DELAY5 | S3C2410_IICLC_FILTER_ON,
56};
57
58void __init s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *pd)
59{
60 struct s3c2410_platform_i2c *npd;
61
62 if (!pd)
Ben Dooks1aba8342008-10-31 16:14:55 +0000[diff] [blame]63 pd = &default_i2c_data0;
Ben Dooks3e1b7762008-10-31 16:14:40 +0000[diff] [blame]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}