diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/global2_scratch.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/global2_scratch.c | 65 |
1 files changed, 62 insertions, 3 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/global2_scratch.c b/drivers/net/dsa/mv88e6xxx/global2_scratch.c index eda710062933..53a6d3ed63b3 100644 --- a/drivers/net/dsa/mv88e6xxx/global2_scratch.c +++ b/drivers/net/dsa/mv88e6xxx/global2_scratch.c @@ -146,7 +146,7 @@ static int mv88e6352_g2_scratch_gpio_set_data(struct mv88e6xxx_chip *chip, * @chip: chip private data * @pin: gpio index * - * Return: 0 for output, 1 for input (same as GPIOF_DIR_XXX). + * Return: 0 for output, 1 for input. */ static int mv88e6352_g2_scratch_gpio_get_dir(struct mv88e6xxx_chip *chip, unsigned int pin) @@ -240,7 +240,7 @@ const struct mv88e6xxx_gpio_ops mv88e6352_gpio_ops = { }; /** - * mv88e6xxx_g2_scratch_gpio_set_smi - set gpio muxing for external smi + * mv88e6390_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 * @@ -248,7 +248,7 @@ const struct mv88e6xxx_gpio_ops mv88e6352_gpio_ops = { * an external SMI interface, or they may be made free for other * GPIO uses. */ -int mv88e6xxx_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, +int mv88e6390_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, bool external) { int misc_cfg = MV88E6352_G2_SCRATCH_MISC_CFG; @@ -289,3 +289,62 @@ int mv88e6xxx_g2_scratch_gpio_set_smi(struct mv88e6xxx_chip *chip, return mv88e6xxx_g2_scratch_write(chip, misc_cfg, val); } + +/** + * 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 + * + * Indicates whether the port may have a serdes attached according to the + * pin strapping. Returns negative error number, 0 if the port is not + * configured to have a serdes, and 1 if the port is configured to have a + * serdes attached. + */ +int mv88e6352_g2_scratch_port_has_serdes(struct mv88e6xxx_chip *chip, int port) +{ + u8 config3, p; + int err; + + err = mv88e6xxx_g2_scratch_read(chip, MV88E6352_G2_SCRATCH_CONFIG_DATA3, + &config3); + if (err) + return err; + + if (config3 & MV88E6352_G2_SCRATCH_CONFIG_DATA3_S_SEL) + p = 5; + else + p = 4; + + return port == p; +} |