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eeprom: Pull out the I/O code

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Pull out the code which does the I2C or SPI read/write, so that
the beefy ifdef around it is contained in a single function.

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>
This commit is contained in:
Marek Vasut 2015-11-10 20:53:23 +01:00 committed by Tom Rini
parent 53a85ad79a
commit 9132088b00
1 changed files with 31 additions and 19 deletions
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50
common/cmd_eeprom.c
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@ -61,6 +61,34 @@ void eeprom_init(void)
#endif
}
static int eeprom_rw_block(unsigned offset, uchar *addr, unsigned alen,
uchar *buffer, unsigned len, bool read)
{
int ret = 0;
/* SPI */
#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
if (read)
spi_read(addr, alen, buffer, len);
else
spi_write(addr, alen, buffer, len);
#else /* I2C */
#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
#endif
if (read)
ret = i2c_read(addr[0], offset, alen - 1, buffer, len);
else
ret = i2c_write(addr[0], offset, alen - 1, buffer, len);
if (ret)
ret = 1;
#endif
return ret;
}
int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt)
{
unsigned end = offset + cnt;
@ -114,15 +142,8 @@ int eeprom_read (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt
len = maxlen;
#endif
#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_read (addr, alen, buffer, len);
#else
#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
#endif
if (i2c_read(addr[0], offset, alen - 1, buffer, len))
rcode = 1;
#endif
rcode = eeprom_rw_block(offset, addr, alen, buffer, len, 1);
buffer += len;
offset += len;
}
@ -197,17 +218,8 @@ int eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cn
len = maxlen;
#endif
#if defined(CONFIG_SPI) && !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
spi_write (addr, alen, buffer, len);
#else
rcode = eeprom_rw_block(offset, addr, alen, buffer, len, 0);
#if defined(CONFIG_SYS_I2C_EEPROM_BUS)
i2c_set_bus_num(CONFIG_SYS_I2C_EEPROM_BUS);
#endif
if (i2c_write(addr[0], offset, alen - 1, buffer, len))
rcode = 1;
#endif
buffer += len;
offset += len;