diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/global2_scratch.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/global2_scratch.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/global2_scratch.c b/drivers/net/dsa/mv88e6xxx/global2_scratch.c index 0e15efd898f2..61ab6cc4fbfc 100644 --- a/drivers/net/dsa/mv88e6xxx/global2_scratch.c +++ b/drivers/net/dsa/mv88e6xxx/global2_scratch.c @@ -291,6 +291,37 @@ int mv88e6390_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, } /** + * mv88e6393x_g2_scratch_gpio_set_smi - set gpio muxing for external smi + * @chip: chip private data + * @external: set mux for external smi, or free for gpio usage + * + * MV88E6191X/6193X/6393X GPIO pins 9 and 10 can be configured as an + * external SMI interface or as regular GPIO-s. + * + * They however have a different register layout then the existing + * function. + */ + +int mv88e6393x_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, + bool external) +{ + int misc_cfg = MV88E6352_G2_SCRATCH_MISC_CFG; + int err; + u8 val; + + err = mv88e6xxx_g2_scratch_read(chip, misc_cfg, &val); + if (err) + return err; + + if (external) + val &= ~MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI; + else + val |= MV88E6352_G2_SCRATCH_MISC_CFG_NORMALSMI; + + return mv88e6xxx_g2_scratch_write(chip, misc_cfg, val); +} + +/** * mv88e6352_g2_scratch_port_has_serdes - indicate if a port can have a serdes * @chip: chip private data * @port: port number to check for serdes |