diff options
Diffstat (limited to 'drivers/net/phy/mdio_device.c')
| -rw-r--r-- | drivers/net/phy/mdio_device.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/drivers/net/phy/mdio_device.c b/drivers/net/phy/mdio_device.c index e24f28924af8..75d97dd9fb28 100644 --- a/drivers/net/phy/mdio_device.c +++ b/drivers/net/phy/mdio_device.c @@ -12,6 +12,8 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/errno.h> +#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -114,6 +116,13 @@ void mdio_device_remove(struct mdio_device *mdiodev) } EXPORT_SYMBOL(mdio_device_remove); +void mdio_device_reset(struct mdio_device *mdiodev, int value) +{ + if (mdiodev->reset) + gpiod_set_value(mdiodev->reset, value); +} +EXPORT_SYMBOL(mdio_device_reset); + /** * mdio_probe - probe an MDIO device * @dev: device to probe @@ -128,8 +137,16 @@ static int mdio_probe(struct device *dev) struct mdio_driver *mdiodrv = to_mdio_driver(drv); int err = 0; - if (mdiodrv->probe) + if (mdiodrv->probe) { + /* Deassert the reset signal */ + mdio_device_reset(mdiodev, 0); + err = mdiodrv->probe(mdiodev); + if (err) { + /* Assert the reset signal */ + mdio_device_reset(mdiodev, 1); + } + } return err; } @@ -140,9 +157,13 @@ static int mdio_remove(struct device *dev) struct device_driver *drv = mdiodev->dev.driver; struct mdio_driver *mdiodrv = to_mdio_driver(drv); - if (mdiodrv->remove) + if (mdiodrv->remove) { mdiodrv->remove(mdiodev); + /* Assert the reset signal */ + mdio_device_reset(mdiodev, 1); + } + return 0; } |