[PATCH] I2C: Add support for multiple I2C busses for RTC & DTT
This patch switches to the desired I2C bus when the date/dtt
commands are called. This can be configured using the
CFG_RTC_BUS_NUM and/or CFG_DTT_BUS_NUM defines.
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/common/cmd_dtt.c b/common/cmd_dtt.c
index 9db64e9..4f7b049 100644
--- a/common/cmd_dtt.c
+++ b/common/cmd_dtt.c
@@ -28,19 +28,27 @@
#if (CONFIG_COMMANDS & CFG_CMD_DTT)
#include <dtt.h>
+#include <i2c.h>
int do_dtt (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int i;
unsigned char sensors[] = CONFIG_DTT_SENSORS;
+ int old_bus;
+
+ /* switch to correct I2C bus */
+ old_bus = I2C_GET_BUS();
+ I2C_SET_BUS(CFG_DTT_BUS_NUM);
/*
* Loop through sensors, read
* temperature, and output it.
*/
- for (i = 0; i < sizeof (sensors); i++) {
+ for (i = 0; i < sizeof (sensors); i++)
printf ("DTT%d: %i C\n", i + 1, dtt_get_temp (sensors[i]));
- }
+
+ /* switch back to original I2C bus */
+ I2C_SET_BUS(old_bus);
return 0;
} /* do_dtt() */