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i2c:soft:multi: Support for multiple soft I2C buses at Samsung boards

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Support for multiple soft I2C buses.

Multibus I2C support is achieved by defining get_multi_{sda|scl}_pin
functions to switch between multiple "soft" I2C buses.

Common definition of I2C_X I2C buses is provided at <i2c.h>.

TEST HW:
     Samsung's Exynos4210 evt.0.1 - Trats development board

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Łukasz Majewski
2012-09-04 23:15:20 +00:00
committed by Heiko Schocher
parent a532278074
commit 7ca8f73a0a
3 changed files with 120 additions and 0 deletions
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12
include/i2c.h
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@ -250,4 +250,16 @@ static inline void I2C_SET_BUS(unsigned int bus)
i2c_set_bus_num(bus);
}
/* Multi I2C definitions */
enum {
I2C_0, I2C_1, I2C_2, I2C_3, I2C_4, I2C_5, I2C_6, I2C_7,
I2C_8, I2C_9, I2C_10,
};
/* Multi I2C busses handling */
#ifdef CONFIG_SOFT_I2C_MULTI_BUS
extern int get_multi_scl_pin(void);
extern int get_multi_sda_pin(void);
extern int multi_i2c_init(void);
#endif
#endif /* _I2C_H_ */