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 <hs@denx.de>
diff --git a/cpu/mpc8260/i2c.c b/cpu/mpc8260/i2c.c
index 335177f..a96fbf8 100644
--- a/cpu/mpc8260/i2c.c
+++ b/cpu/mpc8260/i2c.c
@@ -780,10 +780,23 @@
int i2c_set_bus_num(unsigned int bus)
{
+#if defined(CONFIG_I2C_MUX)
+ if (bus < CFG_MAX_I2C_BUS) {
+ i2c_bus_num = bus;
+ } else {
+ int ret;
+
+ ret = i2x_mux_select_mux(bus);
+ if (ret == 0)
+ i2c_bus_num = bus;
+ else
+ return ret;
+ }
+#else
if (bus >= CFG_MAX_I2C_BUS)
return -1;
i2c_bus_num = bus;
-
+#endif
return 0;
}
/* TODO: add 100/400k switching */