diff options
| -rw-r--r-- | drivers/net/phy/mdio_bus.c | 51 | ||||
| -rw-r--r-- | drivers/of/of_mdio.c | 1 | ||||
| -rw-r--r-- | include/linux/phy.h | 6 |
3 files changed, 18 insertions, 40 deletions
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 4c169dbf9138..2df7b62c1a36 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -353,33 +353,18 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner) mutex_init(&bus->mdio_lock); - /* de-assert bus level PHY GPIO resets */ - if (bus->num_reset_gpios > 0) { - bus->reset_gpiod = devm_kcalloc(&bus->dev, - bus->num_reset_gpios, - sizeof(struct gpio_desc *), - GFP_KERNEL); - if (!bus->reset_gpiod) - return -ENOMEM; - } - - for (i = 0; i < bus->num_reset_gpios; i++) { - gpiod = devm_gpiod_get_index(&bus->dev, "reset", i, - GPIOD_OUT_LOW); - if (IS_ERR(gpiod)) { - err = PTR_ERR(gpiod); - if (err != -ENOENT) { - dev_err(&bus->dev, - "mii_bus %s couldn't get reset GPIO\n", - bus->id); - return err; - } - } else { - bus->reset_gpiod[i] = gpiod; - gpiod_set_value_cansleep(gpiod, 1); - udelay(bus->reset_delay_us); - gpiod_set_value_cansleep(gpiod, 0); - } + /* de-assert bus level PHY GPIO reset */ + gpiod = devm_gpiod_get_optional(&bus->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(gpiod)) { + dev_err(&bus->dev, "mii_bus %s couldn't get reset GPIO\n", + bus->id); + return PTR_ERR(gpiod); + } else if (gpiod) { + bus->reset_gpiod = gpiod; + + gpiod_set_value_cansleep(gpiod, 1); + udelay(bus->reset_delay_us); + gpiod_set_value_cansleep(gpiod, 0); } if (bus->reset) @@ -414,10 +399,8 @@ error: } /* Put PHYs in RESET to save power */ - for (i = 0; i < bus->num_reset_gpios; i++) { - if (bus->reset_gpiod[i]) - gpiod_set_value_cansleep(bus->reset_gpiod[i], 1); - } + if (bus->reset_gpiod) + gpiod_set_value_cansleep(bus->reset_gpiod, 1); device_del(&bus->dev); return err; @@ -442,10 +425,8 @@ void mdiobus_unregister(struct mii_bus *bus) } /* Put PHYs in RESET to save power */ - for (i = 0; i < bus->num_reset_gpios; i++) { - if (bus->reset_gpiod[i]) - gpiod_set_value_cansleep(bus->reset_gpiod[i], 1); - } + if (bus->reset_gpiod) + gpiod_set_value_cansleep(bus->reset_gpiod, 1); device_del(&bus->dev); } diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 7e4c80f9b6cd..9596be9a49d0 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -226,7 +226,6 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) /* Get bus level PHY reset GPIO details */ mdio->reset_delay_us = DEFAULT_GPIO_RESET_DELAY; of_property_read_u32(np, "reset-delay-us", &mdio->reset_delay_us); - mdio->num_reset_gpios = of_gpio_named_count(np, "reset-gpios"); /* Register the MDIO bus */ rc = mdiobus_register(mdio); diff --git a/include/linux/phy.h b/include/linux/phy.h index 414242200a90..51bea6593409 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -226,10 +226,8 @@ struct mii_bus { /* GPIO reset pulse width in microseconds */ int reset_delay_us; - /* Number of reset GPIOs */ - int num_reset_gpios; - /* Array of RESET GPIO descriptors */ - struct gpio_desc **reset_gpiod; + /* RESET GPIO descriptor pointer */ + struct gpio_desc *reset_gpiod; }; #define to_mii_bus(d) container_of(d, struct mii_bus, dev) |