eeprom: Add support for selecting i2c bus

Add additional parameter into the eeprom command to select
the I2C bus on which the eeprom resides.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Heiko Schocher <hs@denx.de>
Reviewed-by: Heiko Schocher <hs@denx.de>

diff --git a/common/cmd_eeprom.c b/common/cmd_eeprom.c
index 120ddbbf97a8f482edfb3ea408e564caba66b4d0..d3e9462f65d960fd381566cb652289e70a2893bc 100644 (file)
--- a/common/cmd_eeprom.c
+++ b/common/cmd_eeprom.c
@@ -209,14 +209,21 @@ static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
        char * const *args = &argv[2];
        int rcode;
        ulong dev_addr, addr, off, cnt;
+       int bus_addr;
 
        switch (argc) {
 #ifdef CONFIG_SYS_DEF_EEPROM_ADDR
        case 5:
+               bus_addr = -1;
                dev_addr = CONFIG_SYS_DEF_EEPROM_ADDR;
                break;
 #endif
        case 6:
+               bus_addr = -1;
+               dev_addr = simple_strtoul(*args++, NULL, 16);
+               break;
+       case 7:
+               bus_addr = simple_strtoul(*args++, NULL, 16);
                dev_addr = simple_strtoul(*args++, NULL, 16);
                break;
        default:
@@ -227,7 +234,7 @@ static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
        off = simple_strtoul(*args++, NULL, 16);
        cnt = simple_strtoul(*args++, NULL, 16);
 
-       eeprom_init(-1);
+       eeprom_init(bus_addr);
 
        if (strcmp (argv[1], "read") == 0) {
                printf(fmt, dev_addr, argv[1], addr, off, cnt);
@@ -249,9 +256,9 @@ static int do_eeprom(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 }
 
 U_BOOT_CMD(
-       eeprom, 6,      1,      do_eeprom,
+       eeprom, 7,      1,      do_eeprom,
        "EEPROM sub-system",
-       "read  devaddr addr off cnt\n"
-       "eeprom write devaddr addr off cnt\n"
+       "read  <bus> <devaddr> addr off cnt\n"
+       "eeprom write <bus> <devaddr> addr off cnt\n"
        "       - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'"
 )