eeprom: Add bus argument to eeprom_init()

Add bus argument to eeprom_init(), so that it can select
the I2C bus number on which the eeprom resides. Any negative
value of the $bus argument will preserve the old behavior.
This is in place so that old code does not randomly break.

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>
[trini: Wrap i2c_set_bus_num() call with CONFIG_SYS_I2C test]
Signed-off-by: Tom Rini <trini@konsulko.com>

diff --git a/common/cmd_eeprom.c b/common/cmd_eeprom.c
index d0942ef65d3d6c0f9d4e324a5b91d8a16f48ff14..120ddbbf97a8f482edfb3ea408e564caba66b4d0 100644 (file)
--- a/common/cmd_eeprom.c
+++ b/common/cmd_eeprom.c
@@ -60,7 +60,7 @@ __weak int eeprom_write_enable(unsigned dev_addr, int state)
        return 0;
 }
 
-void eeprom_init(void)
+void eeprom_init(int bus)
 {
        /* SPI EEPROM */
 #if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
@@ -69,6 +69,10 @@ void eeprom_init(void)
 
        /* I2C EEPROM */
 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C_SOFT)
+#if defined(CONFIG_SYS_I2C)
+       if (bus >= 0)
+               i2c_set_bus_num(bus);
+#endif
        i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 #endif
 }
@@ -223,7 +227,7 @@ 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();
+       eeprom_init(-1);
 
        if (strcmp (argv[1], "read") == 0) {
                printf(fmt, dev_addr, argv[1], addr, off, cnt);

diff --git a/common/env_eeprom.c b/common/env_eeprom.c
index eea169d48454d42705551528122b9f1ad531b3c0..72b13734f287efb7ff5db24db617a09a1d2f5814 100644 (file)
--- a/common/env_eeprom.c
+++ b/common/env_eeprom.c
@@ -91,7 +91,7 @@ void env_relocate_spec(void)
        uchar rdbuf[64], flags[2];
        int i, crc_ok[2] = {0, 0};
 
-       eeprom_init();  /* prepare for EEPROM read/write */
+       eeprom_init(-1);        /* prepare for EEPROM read/write */
 
        off_env[0] = CONFIG_ENV_OFFSET;
        off_env[1] = CONFIG_ENV_OFFSET_REDUND;
@@ -154,7 +154,7 @@ void env_relocate_spec(void)
        ulong crc, len, new;
        uchar rdbuf[64];
 
-       eeprom_init();  /* prepare for EEPROM read/write */
+       eeprom_init(-1);        /* prepare for EEPROM read/write */
 
        /* read old CRC */
        eeprom_bus_read(CONFIG_SYS_DEF_EEPROM_ADDR,

diff --git a/include/common.h b/include/common.h
index cb35ac8aaa0ca0dca1439bcc9499ee3c994c9cc4..a3831b78dccdd4f1ee840e2513d5bfdc43f493e3 100644 (file)
--- a/include/common.h
+++ b/include/common.h
@@ -474,7 +474,7 @@ void        reset_phy     (void);
 void   fdc_hw_init   (void);
 
 /* $(BOARD)/eeprom.c */
-void eeprom_init  (void);
+void eeprom_init  (int bus);
 int  eeprom_read  (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
 int  eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);