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ARM: S5PV310: Add I2C channel 0, 1 and 2 support 

This patch adds configuration of proper mux pins for support
I2C channel 0, 1, and 2 on S5PV310/S5PC210.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: coding-style and minor comment fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Kyungmin Park 2010-08-05 17:10:24 +09:00 committed by Kukjin Kim
parent acfdc56d54
commit 793177b554
5 changed files with 75 additions and 2 deletions
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10
arch/arm/mach-s5pv310/Kconfig
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@ -15,6 +15,16 @@ config CPU_S5PV310
help help
Enable S5PV310 CPU support Enable S5PV310 CPU support
config S5PV310_SETUP_I2C1
bool
help
Common setup code for i2c bus 1.
config S5PV310_SETUP_I2C2
bool
help
Common setup code for i2c bus 2.
# machine support # machine support
config MACH_SMDKV310 config MACH_SMDKV310

5
arch/arm/mach-s5pv310/Makefile
View File

@ -22,3 +22,8 @@ obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
# machine support # machine support
obj-$(CONFIG_MACH_SMDKV310) += mach-smdkv310.o obj-$(CONFIG_MACH_SMDKV310) += mach-smdkv310.o
# device support
obj-$(CONFIG_S5PV310_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S5PV310_SETUP_I2C2) += setup-i2c2.o

12
arch/arm/mach-s5pv310/setup-i2c0.c
View File

@ -1,4 +1,5 @@
/* linux/arch/arm/mach-s5pv210/setup-i2c0.c /*
* linux/arch/arm/mach-s5pv310/setup-i2c0.c
* *
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd. * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/ * http://www.samsung.com/
@ -14,7 +15,14 @@
struct platform_device; /* don't need the contents */ struct platform_device; /* don't need the contents */
#include <linux/gpio.h>
#include <plat/iic.h>
#include <plat/gpio-cfg.h>
void s3c_i2c0_cfg_gpio(struct platform_device *dev) void s3c_i2c0_cfg_gpio(struct platform_device *dev)
{ {
/* will be implemented later */ s3c_gpio_cfgpin(S5PV310_GPD1(0), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV310_GPD1(0), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5PV310_GPD1(1), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV310_GPD1(1), S3C_GPIO_PULL_UP);
} }

25
arch/arm/mach-s5pv310/setup-i2c1.c Normal file
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@ -0,0 +1,25 @@
/*
* linux/arch/arm/mach-s5pv310/setup-i2c1.c
*
* Copyright (C) 2010 Samsung Electronics Co., Ltd.
*
* I2C1 GPIO configuration.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
struct platform_device; /* don't need the contents */
#include <linux/gpio.h>
#include <plat/iic.h>
#include <plat/gpio-cfg.h>
void s3c_i2c1_cfg_gpio(struct platform_device *dev)
{
s3c_gpio_cfgpin(S5PV310_GPD1(2), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV310_GPD1(2), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5PV310_GPD1(3), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PV310_GPD1(3), S3C_GPIO_PULL_UP);
}

25
arch/arm/mach-s5pv310/setup-i2c2.c Normal file
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@ -0,0 +1,25 @@
/*
* linux/arch/arm/mach-s5pv310/setup-i2c2.c
*
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
*
* I2C2 GPIO configuration.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
struct platform_device; /* don't need the contents */
#include <linux/gpio.h>
#include <plat/iic.h>
#include <plat/gpio-cfg.h>
void s3c_i2c2_cfg_gpio(struct platform_device *dev)
{
s3c_gpio_cfgpin(S5PV310_GPA0(6), S3C_GPIO_SFN(3));
s3c_gpio_setpull(S5PV310_GPA0(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5PV310_GPA0(7), S3C_GPIO_SFN(3));
s3c_gpio_setpull(S5PV310_GPA0(7), S3C_GPIO_PULL_UP);
}