[PATCH 1/3] ARM: S5P6440: Add support for I2C channel 0 and 1 on SMDK6440
Kukjin Kim
kgene.kim at samsung.com
Fri Jul 16 09:13:17 EDT 2010
From: Naveen Krishna Ch <ch.naveen at samsung.com>
This patch adds helper functions for I2C channel 0 and 1, GPIO
configurations for I2C on S5P6440 and support I2C-0/1 devices
on SMDK6440.
Signed-off-by: Naveen Krishna Ch <ch.naveen at samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim at samsung.com>
---
arch/arm/mach-s5p6440/Kconfig | 7 +++++++
arch/arm/mach-s5p6440/Makefile | 1 +
arch/arm/mach-s5p6440/include/mach/map.h | 2 ++
arch/arm/mach-s5p6440/mach-smdk6440.c | 20 ++++++++++++++++++++
arch/arm/mach-s5p6440/setup-i2c0.c | 7 ++++++-
arch/arm/mach-s5p6440/setup-i2c1.c | 30 ++++++++++++++++++++++++++++++
6 files changed, 66 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-s5p6440/setup-i2c1.c
diff --git a/arch/arm/mach-s5p6440/Kconfig b/arch/arm/mach-s5p6440/Kconfig
index f066fae..ba3927b 100644
--- a/arch/arm/mach-s5p6440/Kconfig
+++ b/arch/arm/mach-s5p6440/Kconfig
@@ -13,13 +13,20 @@ config CPU_S5P6440
help
Enable S5P6440 CPU support
+config S5P6440_SETUP_I2C1
+ bool
+ help
+ Common setup code for i2c bus 1.
+
config MACH_SMDK6440
bool "SMDK6440"
select CPU_S5P6440
select SAMSUNG_DEV_TS
select SAMSUNG_DEV_ADC
+ select S3C_DEV_I2C1
select S3C_DEV_WDT
select HAVE_S3C2410_WATCHDOG
+ select S5P6440_SETUP_I2C1
help
Machine support for the Samsung SMDK6440
diff --git a/arch/arm/mach-s5p6440/Makefile b/arch/arm/mach-s5p6440/Makefile
index be3c53a..c3fe4d3 100644
--- a/arch/arm/mach-s5p6440/Makefile
+++ b/arch/arm/mach-s5p6440/Makefile
@@ -22,3 +22,4 @@ obj-$(CONFIG_MACH_SMDK6440) += mach-smdk6440.o
# device support
obj-y += dev-audio.o
obj-$(CONFIG_S3C64XX_DEV_SPI) += dev-spi.o
+obj-$(CONFIG_S5P6440_SETUP_I2C1) += setup-i2c1.o
diff --git a/arch/arm/mach-s5p6440/include/mach/map.h b/arch/arm/mach-s5p6440/include/mach/map.h
index 44011b9..d6a3a29 100644
--- a/arch/arm/mach-s5p6440/include/mach/map.h
+++ b/arch/arm/mach-s5p6440/include/mach/map.h
@@ -53,6 +53,7 @@
#define S5P_SZ_UART SZ_256
#define S5P6440_PA_IIC0 (0xEC104000)
+#define S5P6440_PA_IIC1 (0xEC20F000)
#define S5P6440_PA_SPI0 0xEC400000
#define S5P6440_PA_SPI1 0xEC500000
@@ -77,6 +78,7 @@
/* compatibiltiy defines. */
#define S3C_PA_UART S5P6440_PA_UART
#define S3C_PA_IIC S5P6440_PA_IIC0
+#define S3C_PA_IIC1 S5P6440_PA_IIC1
#define S3C_PA_WDT S5P6440_PA_WDT
#define SAMSUNG_PA_ADC S5P6440_PA_ADC
diff --git a/arch/arm/mach-s5p6440/mach-smdk6440.c b/arch/arm/mach-s5p6440/mach-smdk6440.c
index 8291fec..623354e 100644
--- a/arch/arm/mach-s5p6440/mach-smdk6440.c
+++ b/arch/arm/mach-s5p6440/mach-smdk6440.c
@@ -15,6 +15,7 @@
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/init.h>
+#include <linux/i2c.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
@@ -37,6 +38,7 @@
#include <mach/regs-clock.h>
#include <plat/devs.h>
#include <plat/cpu.h>
+#include <plat/iic.h>
#include <plat/pll.h>
#include <plat/adc.h>
#include <plat/ts.h>
@@ -88,10 +90,20 @@ static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = {
static struct platform_device *smdk6440_devices[] __initdata = {
&s5p6440_device_iis,
&s3c_device_adc,
+ &s3c_device_i2c0,
+ &s3c_device_i2c1,
&s3c_device_ts,
&s3c_device_wdt,
};
+static struct i2c_board_info smdk6440_i2c_devs0[] __initdata = {
+ { I2C_BOARD_INFO("24c08", 0x50), },
+};
+
+static struct i2c_board_info smdk6440_i2c_devs1[] __initdata = {
+ /* To be populated */
+};
+
static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
.delay = 10000,
.presc = 49,
@@ -109,6 +121,14 @@ static void __init smdk6440_machine_init(void)
{
s3c24xx_ts_set_platdata(&s3c_ts_platform);
+ /* I2C */
+ s3c_i2c0_set_platdata(NULL);
+ s3c_i2c1_set_platdata(NULL);
+ i2c_register_board_info(0, smdk6440_i2c_devs0,
+ ARRAY_SIZE(smdk6440_i2c_devs0));
+ i2c_register_board_info(1, smdk6440_i2c_devs1,
+ ARRAY_SIZE(smdk6440_i2c_devs1));
+
platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices));
}
diff --git a/arch/arm/mach-s5p6440/setup-i2c0.c b/arch/arm/mach-s5p6440/setup-i2c0.c
index 69e8a66..2c99d14 100644
--- a/arch/arm/mach-s5p6440/setup-i2c0.c
+++ b/arch/arm/mach-s5p6440/setup-i2c0.c
@@ -17,9 +17,14 @@
struct platform_device; /* don't need the contents */
+#include <linux/gpio.h>
+#include <plat/gpio-cfg.h>
#include <plat/iic.h>
void s3c_i2c0_cfg_gpio(struct platform_device *dev)
{
- /* Will be populated later */
+ s3c_gpio_cfgpin(S5P6440_GPB(5), S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(S5P6440_GPB(5), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6440_GPB(6), S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(S5P6440_GPB(6), S3C_GPIO_PULL_UP);
}
diff --git a/arch/arm/mach-s5p6440/setup-i2c1.c b/arch/arm/mach-s5p6440/setup-i2c1.c
new file mode 100644
index 0000000..9a1537f
--- /dev/null
+++ b/arch/arm/mach-s5p6440/setup-i2c1.c
@@ -0,0 +1,30 @@
+/* linux/arch/arm/mach-s5p6440/setup-i2c1.c
+ *
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * I2C1 GPIO configuration.
+ *
+ * Based on plat-s3c64xx/setup-i2c0.c
+ *
+ * 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.
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/gpio.h>
+
+struct platform_device; /* don't need the contents */
+
+#include <plat/gpio-cfg.h>
+#include <plat/iic.h>
+
+void s3c_i2c1_cfg_gpio(struct platform_device *dev)
+{
+ s3c_gpio_cfgpin(S5P6440_GPR(9), S3C_GPIO_SFN(6));
+ s3c_gpio_setpull(S5P6440_GPR(9), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5P6440_GPR(10), S3C_GPIO_SFN(6));
+ s3c_gpio_setpull(S5P6440_GPR(10), S3C_GPIO_PULL_UP);
+}
--
1.6.2.5
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