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Commit d395e6ad authored by Komal Shah's avatar Komal Shah Committed by Kevin Hilman
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ARM: DaVinci: i2c setup 



Davinci I2C initialization infrastructure; will be used by EVM init.

[ dbrownell@users.sourceforge.net: pass platform data into init code ]

Signed-off-by: default avatarKomal Shah <komal_shah802003@yahoo.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
parent dce1115b

arch/arm/mach-davinci/Makefile

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@@ -5,7 +5,7 @@ 


# Common objects

obj-y 			:= time.o irq.o clock.o serial.o io.o id.o psc.o \

			   gpio.o mux.o

			   gpio.o mux.o devices.o



# Board specific

obj-$(CONFIG_MACH_DAVINCI_EVM)  += board-evm.o

arch/arm/mach-davinci/devices.c

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/*

 * mach-davinci/devices.c

 *

 * DaVinci platform device setup/initialization

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#include <linux/module.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/dma-mapping.h>

#include <linux/io.h>



#include <asm/mach/map.h>



#include <mach/hardware.h>

#include <mach/i2c.h>



static struct resource i2c_resources[] = {

	{

		.start		= DAVINCI_I2C_BASE,

		.end		= DAVINCI_I2C_BASE + 0x40,

		.flags		= IORESOURCE_MEM,

	},

	{

		.start		= IRQ_I2C,

		.flags		= IORESOURCE_IRQ,

	},

};



static struct platform_device davinci_i2c_device = {

	.name           = "i2c_davinci",

	.id             = 1,

	.num_resources	= ARRAY_SIZE(i2c_resources),

	.resource	= i2c_resources,

};



void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)

{

	davinci_i2c_device.dev.platform_data = pdata;

	(void) platform_device_register(&davinci_i2c_device);

}

arch/arm/mach-davinci/include/mach/i2c.h

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@@ -14,8 +14,11 @@ 


/* All frequencies are expressed in kHz */

struct davinci_i2c_platform_data {

	unsigned int	bus_freq;	/* standard bus frequency */

	unsigned int	bus_delay;	/* transaction delay */

	unsigned int	bus_freq;	/* standard bus frequency (kHz) */

	unsigned int	bus_delay;	/* post-transaction delay (usec) */

};



/* for board setup code */

void davinci_init_i2c(struct davinci_i2c_platform_data *);



#endif /* __ASM_ARCH_I2C_H */