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ARM: S5PC1xx: add platform helpers for i2c adapter devices

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Samsung S5PC100 has I2C bus controller compatible with the one known from
previous SoCs series. Add required platform setup and support code that
it can be used with s3c2410-i2c driver.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Kyungmin Park 2009-11-17 08:41:21 +01:00 committed by Ben Dooks
parent 079b032417
commit 5eda288fa9
5 changed files with 20 additions and 6 deletions
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4
arch/arm/mach-s5pc100/cpu.c
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@ -75,6 +75,10 @@ void __init s5pc100_map_io(void)
iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
/* initialise device information early */
/* the i2c devices are directly compatible with s3c2440 */
s3c_i2c0_setname("s3c2440-i2c");
s3c_i2c1_setname("s3c2440-i2c");
}
void __init s5pc100_init_clocks(int xtal)

4
arch/arm/plat-s5pc1xx/Kconfig
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@ -42,7 +42,7 @@ config S5PC1XX_SETUP_FB_24BPP
help
Common setup code for S5PC1XX with an 24bpp RGB display helper.
config S5PC100_SETUP_I2C0
config S5PC1XX_SETUP_I2C0
bool
default y
help
@ -51,7 +51,7 @@ config S5PC100_SETUP_I2C0
Note, currently since i2c0 is always compiled, this setup helper
is always compiled with it.
config S5PC100_SETUP_I2C1
config S5PC1XX_SETUP_I2C1
bool
help
Common setup code for i2c bus 1.

4
arch/arm/plat-s5pc1xx/Makefile
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@ -26,5 +26,5 @@ obj-$(CONFIG_CPU_S5PC100_CLOCK) += s5pc100-clock.o
obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o
obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
obj-$(CONFIG_S5PC100_SETUP_I2C0) += setup-i2c0.o
obj-$(CONFIG_S5PC100_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S5PC1XX_SETUP_I2C0) += setup-i2c0.o
obj-$(CONFIG_S5PC1XX_SETUP_I2C1) += setup-i2c1.o

7
arch/arm/plat-s5pc1xx/setup-i2c0.c
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@ -17,9 +17,14 @@
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)
{
/* Pin configuration would be needed */
s3c_gpio_cfgpin(S5PC100_GPD(3), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PC100_GPD(3), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5PC100_GPD(4), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PC100_GPD(4), S3C_GPIO_PULL_UP);
}

7
arch/arm/plat-s5pc1xx/setup-i2c1.c
View File

@ -17,9 +17,14 @@
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)
{
/* Pin configuration would be needed */
s3c_gpio_cfgpin(S5PC100_GPD(5), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PC100_GPD(5), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5PC100_GPD(6), S3C_GPIO_SFN(2));
s3c_gpio_setpull(S5PC100_GPD(6), S3C_GPIO_PULL_UP);
}