diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/global2.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/global2.c | 93 |
1 files changed, 92 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/global2.c b/drivers/net/dsa/mv88e6xxx/global2.c index 3e77071949ab..ead2e265c9ef 100644 --- a/drivers/net/dsa/mv88e6xxx/global2.c +++ b/drivers/net/dsa/mv88e6xxx/global2.c @@ -218,7 +218,8 @@ static int mv88e6xxx_g2_clear_pot(struct mv88e6xxx_chip *chip) } /* Offset 0x14: EEPROM Command - * Offset 0x15: EEPROM Data + * Offset 0x15: EEPROM Data (for 16-bit data access) + * Offset 0x15: EEPROM Addr (for 8-bit data access) */ static int mv88e6xxx_g2_eeprom_wait(struct mv88e6xxx_chip *chip) @@ -239,6 +240,50 @@ static int mv88e6xxx_g2_eeprom_cmd(struct mv88e6xxx_chip *chip, u16 cmd) return mv88e6xxx_g2_eeprom_wait(chip); } +static int mv88e6xxx_g2_eeprom_read8(struct mv88e6xxx_chip *chip, + u16 addr, u8 *data) +{ + u16 cmd = GLOBAL2_EEPROM_CMD_OP_READ; + int err; + + err = mv88e6xxx_g2_eeprom_wait(chip); + if (err) + return err; + + err = mv88e6xxx_g2_write(chip, GLOBAL2_EEPROM_ADDR, addr); + if (err) + return err; + + err = mv88e6xxx_g2_eeprom_cmd(chip, cmd); + if (err) + return err; + + err = mv88e6xxx_g2_read(chip, GLOBAL2_EEPROM_CMD, &cmd); + if (err) + return err; + + *data = cmd & 0xff; + + return 0; +} + +static int mv88e6xxx_g2_eeprom_write8(struct mv88e6xxx_chip *chip, + u16 addr, u8 data) +{ + u16 cmd = GLOBAL2_EEPROM_CMD_OP_WRITE | GLOBAL2_EEPROM_CMD_WRITE_EN; + int err; + + err = mv88e6xxx_g2_eeprom_wait(chip); + if (err) + return err; + + err = mv88e6xxx_g2_write(chip, GLOBAL2_EEPROM_ADDR, addr); + if (err) + return err; + + return mv88e6xxx_g2_eeprom_cmd(chip, cmd | data); +} + static int mv88e6xxx_g2_eeprom_read16(struct mv88e6xxx_chip *chip, u8 addr, u16 *data) { @@ -273,6 +318,52 @@ static int mv88e6xxx_g2_eeprom_write16(struct mv88e6xxx_chip *chip, return mv88e6xxx_g2_eeprom_cmd(chip, cmd); } +int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip, + struct ethtool_eeprom *eeprom, u8 *data) +{ + unsigned int offset = eeprom->offset; + unsigned int len = eeprom->len; + int err; + + eeprom->len = 0; + + while (len) { + err = mv88e6xxx_g2_eeprom_read8(chip, offset, data); + if (err) + return err; + + eeprom->len++; + offset++; + data++; + len--; + } + + return 0; +} + +int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip, + struct ethtool_eeprom *eeprom, u8 *data) +{ + unsigned int offset = eeprom->offset; + unsigned int len = eeprom->len; + int err; + + eeprom->len = 0; + + while (len) { + err = mv88e6xxx_g2_eeprom_write8(chip, offset, *data); + if (err) + return err; + + eeprom->len++; + offset++; + data++; + len--; + } + + return 0; +} + int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip, struct ethtool_eeprom *eeprom, u8 *data) { |