1aba834da1
Add device definition and support functions for the second i2c device (i2c1). If this is selected, the first i2c bus will become index 0 instead of index -1. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* arch/arm/mach-s3c2410/include/mach/iic.h
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*
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* Copyright (c) 2004 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C2410 - I2C Controller platfrom_device info
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_IIC_H
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#define __ASM_ARCH_IIC_H __FILE__
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#define S3C_IICFLG_FILTER (1<<0) /* enable s3c2440 filter */
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/* Notes:
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* 1) All frequencies are expressed in Hz
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* 2) A value of zero is `do not care`
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*/
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struct s3c2410_platform_i2c {
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int bus_num; /* bus number to use */
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unsigned int flags;
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unsigned int slave_addr; /* slave address for controller */
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unsigned long bus_freq; /* standard bus frequency */
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unsigned long max_freq; /* max frequency for the bus */
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unsigned long min_freq; /* min frequency for the bus */
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unsigned int sda_delay; /* pclks (s3c2440 only) */
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void (*cfg_gpio)(struct platform_device *dev);
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};
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/**
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* s3c_i2c0_set_platdata - set platform data for i2c0 device
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* @i2c: The platform data to set, or NULL for default data.
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*
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* Register the given platform data for use with the i2c0 device. This
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* call copies the platform data, so the caller can use __initdata for
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* their copy.
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*
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* This call will set cfg_gpio if is null to the default platform
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* implementation.
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*
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* Any user of s3c_device_i2c0 should call this, even if it is with
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* NULL to ensure that the device is given the default platform data
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* as the driver will no longer carry defaults.
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*/
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extern void s3c_i2c0_set_platdata(struct s3c2410_platform_i2c *i2c);
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extern void s3c_i2c1_set_platdata(struct s3c2410_platform_i2c *i2c);
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/* defined by architecture to configure gpio */
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extern void s3c_i2c0_cfg_gpio(struct platform_device *dev);
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extern void s3c_i2c1_cfg_gpio(struct platform_device *dev);
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#endif /* __ASM_ARCH_IIC_H */
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