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/*
* Helper module for board specific I2C bus registration
*
* Copyright (C) 2009 Nokia Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef __ASM__ARCH_OMAP_I2C_H
#define __ASM__ARCH_OMAP_I2C_H
#include <linux/i2c.h>
#include <linux/i2c-omap.h>
#include <linux/hwspinlock.h>
#include <plat/omap_hwmod.h>
struct omap_i2c_bus_board_data {
struct hwspinlock *handle;
int (*hwspin_lock_timeout)(struct hwspinlock *hwlock, unsigned int to);
void (*hwspin_unlock)(struct hwspinlock *hwlock);
};
/**
* omap_register_i2c_bus_board_data - register hwspinlock data
* @bus_id: bus id counting from number 1
* @pdata: pointer to the I2C bus board data
*/
void omap_register_i2c_bus_board_data(int bus_id,
struct omap_i2c_bus_board_data *pdata);
/**
* omap_i2c_get_hwspinlockid - Get HWSPINLOCK ID for I2C device
* @dev: I2C device
*
* returns the hwspinlock id or -1 if does not exist
*/
int omap_i2c_get_hwspinlockid(struct device *dev);
#if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
struct i2c_board_info const *info,
unsigned len);
#else
static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
struct i2c_board_info const *info,
unsigned len)
{
return 0;
}
#endif
/**
* i2c_dev_attr - OMAP I2C controller device attributes for omap_hwmod
* @fifo_depth: total controller FIFO size (in bytes)
* @flags: differences in hardware support capability
*
* @fifo_depth represents what exists on the hardware, not what is
* actually configured at runtime by the device driver.
*/
struct omap_i2c_dev_attr {
u8 fifo_depth;
u8 flags;
};
enum omap_i2c_pullup_values {
I2C_PULLUP_STD_4K5_FAST_1K66 = 0,
I2C_PULLUP_STD_2K1_FAST_920OM,
I2C_PULLUP_STD_860_OM_FAST_500_OM,
I2C_PULLUP_STD_NA_FAST_300_OM
};
void __init omap1_i2c_mux_pins(int bus_id);
void __init omap2_i2c_mux_pins(int bus_id);
void omap2_i2c_pullup(int bus_id, enum omap_i2c_pullup_values pullup);
int omap_i2c_reset(struct omap_hwmod *oh);
#endif /* __ASM__ARCH_OMAP_I2C_H */
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