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[ARM] 4650/1: AT91: New-style init of I2C, support for i2c-gpio

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The AT91 I2C driver is currently marked as "broken" due to hardware
issues.  This patch enables AT91-based platforms to also use the
bitbanged GPIO for I2C.

This updates platform setup logic (setting up an i2c-gpio device
using the same pins as the i2c-at91 device, unless only the BROKEN
driver is enabled).

Also make use of the new-style initialization of I2C devices using
i2c_register_board_info().

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Andrew Victor 2007-11-19 13:47:20 +01:00 • committed by Russell King
commit f230d3f53d
19 changed files with 233 additions and 36 deletions
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3
include/asm-arm/arch-at91/board.h
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@ -33,6 +33,7 @@
#include <linux/mtd/partitions.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/spi/spi.h>
/* USB Device */
@ -94,7 +95,7 @@ struct at91_nand_data {
extern void __init at91_add_device_nand(struct at91_nand_data *data);
/* I2C*/
extern void __init at91_add_device_i2c(void);
extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_devices);
/* SPI */
extern void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices);