From 67b23a322848d828a5e45c0567b72762bfde7abf Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Wed, 15 Oct 2008 09:39:47 +0200 Subject: I2C: adding new "i2c bus" Command to the I2C Subsystem. With this Command it is possible to add new I2C Busses, which are behind 1 .. n I2C Muxes. Details see README. Signed-off-by: Heiko Schocher --- include/i2c.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'include/i2c.h') diff --git a/include/i2c.h b/include/i2c.h index a6e797a383..9f771dda10 100644 --- a/include/i2c.h +++ b/include/i2c.h @@ -85,6 +85,29 @@ void i2c_init(int speed, int slaveaddr); void i2c_init_board(void); #endif +#if defined(CONFIG_I2C_MUX) + +typedef struct _mux { + uchar chip; + uchar channel; + char *name; + struct _mux *next; +} I2C_MUX; + +typedef struct _mux_device { + int busid; + I2C_MUX *mux; /* List of muxes, to reach the device */ + struct _mux_device *next; +} I2C_MUX_DEVICE; + +int i2c_mux_add_device(I2C_MUX_DEVICE *dev); + +I2C_MUX_DEVICE *i2c_mux_search_device(int id); +I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf); +int i2x_mux_select_mux(int bus); +int i2c_mux_ident_muxstring_f (uchar *buf); +#endif + /* * Probe the given I2C chip address. Returns 0 if a chip responded, * not 0 on failure. -- cgit v1.2.1