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ARM: 5668/2: U300 I2C board setup

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This sets up the U300 I2C subdevices so that the AB3100
analog baseband ASIC is properly detected and also the
camera devices in the U335 reference design get properly
registered.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij 2009-08-13 21:42:01 +01:00 committed by Russell King
parent c7c8c78fdf
commit 6be2a0cacc
4 changed files with 73 additions and 2 deletions
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1
arch/arm/mach-u300/Makefile
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@ -11,3 +11,4 @@ obj-$(CONFIG_ARCH_U300) += u300.o
obj-$(CONFIG_MMC) += mmc.o
obj-$(CONFIG_SPI_PL022) += spi.o
obj-$(CONFIG_MACH_U300_SPIDUMMY) += dummyspichip.o
obj-$(CONFIG_I2C_STU300) += i2c.o

8
arch/arm/mach-u300/core.c
View File

@ -33,6 +33,7 @@
#include "clock.h"
#include "mmc.h"
#include "spi.h"
#include "i2c.h"
/*
* Static I/O mappings that are needed for booting the U300 platforms. The
@ -379,14 +380,14 @@ static struct platform_device wdog_device = {
};
static struct platform_device i2c0_device = {
.name = "stddci2c",
.name = "stu300",
.id = 0,
.num_resources = ARRAY_SIZE(i2c0_resources),
.resource = i2c0_resources,
};
static struct platform_device i2c1_device = {
.name = "stddci2c",
.name = "stu300",
.id = 1,
.num_resources = ARRAY_SIZE(i2c1_resources),
.resource = i2c1_resources,
@ -625,6 +626,9 @@ void __init u300_init_devices(void)
u300_assign_physmem();
/* Register subdevices on the I2C buses */
u300_i2c_register_board_devices();
/* Register subdevices on the SPI bus */
u300_spi_register_board_devices();

43
arch/arm/mach-u300/i2c.c Normal file
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@ -0,0 +1,43 @@
/*
* arch/arm/mach-u300/i2c.c
*
* Copyright (C) 2009 ST-Ericsson AB
* License terms: GNU General Public License (GPL) version 2
*
* Register board i2c devices
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <mach/irqs.h>
static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
{
.type = "ab3100",
.addr = 0x48,
.irq = IRQ_U300_IRQ0_EXT,
},
};
static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
#ifdef CONFIG_MACH_U300_BS335
{
.type = "fwcam",
.addr = 0x10,
},
{
.type = "fwcam",
.addr = 0x5d,
},
#else
{ },
#endif
};
void __init u300_i2c_register_board_devices(void)
{
i2c_register_board_info(0, bus0_i2c_board_info,
ARRAY_SIZE(bus0_i2c_board_info));
i2c_register_board_info(1, bus1_i2c_board_info,
ARRAY_SIZE(bus1_i2c_board_info));
}

23
arch/arm/mach-u300/i2c.h Normal file
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@ -0,0 +1,23 @@
/*
* arch/arm/mach-u300/i2c.h
*
* Copyright (C) 2009 ST-Ericsson AB
* License terms: GNU General Public License (GPL) version 2
*
* Register board i2c devices
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
#ifndef MACH_U300_I2C_H
#define MACH_U300_I2C_H
#ifdef CONFIG_I2C_STU300
void __init u300_i2c_register_board_devices(void);
#else
/* Compile out this stuff if no I2C adapter is available */
static inline void __init u300_i2c_register_board_devices(void)
{
}
#endif
#endif