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Commit 6b65cd74 authored by Russell King's avatar Russell King Committed by Jean Delvare
Browse files

i2c: New ARM Versatile/Realview bus driver 



Add support for the I2C bus found on the ARM Versatile and Realview
platforms.  The I2C bus has a RTC and optionally some EEPROMs attached.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 763d9c04

arch/arm/mach-realview/core.c

+13 −0
Original line number Diff line number Diff line
@@ -141,6 +141,19 @@ struct platform_device realview_smc91x_device = { 
	.resource	= realview_smc91x_resources,

};



static struct resource realview_i2c_resource = {

	.start		= REALVIEW_I2C_BASE,

	.end		= REALVIEW_I2C_BASE + SZ_4K - 1,

	.flags		= IORESOURCE_MEM,

};



struct platform_device realview_i2c_device = {

	.name		= "versatile-i2c",

	.id		= -1,

	.num_resources	= 1,

	.resource	= &realview_i2c_resource,

};



#define REALVIEW_SYSMCI	(__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_MCI_OFFSET)



static unsigned int realview_mmc_status(struct device *dev)

arch/arm/mach-realview/core.h

+1 −0
Original line number Diff line number Diff line
@@ -108,6 +108,7 @@ static struct amba_device name##_device = { \ 


extern struct platform_device realview_flash_device;

extern struct platform_device realview_smc91x_device;

extern struct platform_device realview_i2c_device;

extern struct mmc_platform_data realview_mmc0_plat_data;

extern struct mmc_platform_data realview_mmc1_plat_data;

extern struct clk realview_clcd_clk;

arch/arm/mach-realview/realview_eb.c

+1 −0
Original line number Diff line number Diff line
@@ -155,6 +155,7 @@ static void __init realview_eb_init(void) 


	platform_device_register(&realview_flash_device);

	platform_device_register(&realview_smc91x_device);

	platform_device_register(&realview_i2c_device);



	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {

		struct amba_device *d = amba_devs[i];

arch/arm/mach-versatile/core.c

+14 −0
Original line number Diff line number Diff line
@@ -325,6 +325,19 @@ static struct platform_device smc91x_device = { 
	.resource	= smc91x_resources,

};



static struct resource versatile_i2c_resource = {

	.start			= VERSATILE_I2C_BASE,

	.end			= VERSATILE_I2C_BASE + SZ_4K - 1,

	.flags			= IORESOURCE_MEM,

};



static struct platform_device versatile_i2c_device = {

	.name			= "versatile-i2c",

	.id			= -1,

	.num_resources		= 1,

	.resource		= &versatile_i2c_resource,

};



#define VERSATILE_SYSMCI	(__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_MCI_OFFSET)



unsigned int mmc_status(struct device *dev)
@@ -775,6 +788,7 @@ void __init versatile_init(void) 
	clk_register(&versatile_clcd_clk);



	platform_device_register(&versatile_flash_device);

	platform_device_register(&versatile_i2c_device);

	platform_device_register(&smc91x_device);



	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {

drivers/i2c/busses/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -476,6 +476,17 @@ config I2C_STUB 


	  If you don't know what to do here, definitely say N.



config I2C_VERSATILE

	tristate "ARM Versatile/Realview I2C bus support"

	depends on I2C && (ARCH_VERSATILE || ARCH_REALVIEW)

	select I2C_ALGOBIT

	help

	  Say yes if you want to support the I2C serial bus on ARMs Versatile

	  range of platforms.



	  This driver can also be built as a module.  If so, the module

	  will be called i2c-versatile.



config I2C_VIA

	tristate "VIA 82C586B"

	depends on I2C && PCI && EXPERIMENTAL