[PATCH u-boot-net 04/14] net: mdio-uclass: add wrappers for read/write/reset operations

[Ramon Fried]

On Thu, Mar 17, 2022 at 2:50 PM Marek Behún <kabel at kernel.org> wrote:
>
> From: Marek Behún <marek.behun at nic.cz>
>
> Add wrappers dm_mdio_read(), dm_mdio_write() and dm_mdio_reset() for
> DM MDIO's .read(), .write() and .reset() operations.
>
> Signed-off-by: Marek Behún <marek.behun at nic.cz>
> ---
>  include/miiphy.h  | 31 +++++++++++++++++++++++++++++++
>  net/mdio-uclass.c | 31 +++++++++++++++++++++++++++++++
>  2 files changed, 62 insertions(+)
>
> diff --git a/include/miiphy.h b/include/miiphy.h
> index 235ae066dd..110921f20d 100644
> --- a/include/miiphy.h
> +++ b/include/miiphy.h
> @@ -157,6 +157,37 @@ struct mdio_ops {
>   */
>  void dm_mdio_probe_devices(void);
>
> +/**
> + * dm_mdio_read - Wrapper over .read() operation for DM MDIO
> + *
> + * @mdiodev: mdio device
> + * @addr: PHY address on MDIO bus
> + * @devad: device address on PHY if C45; should be MDIO_DEVAD_NONE if C22
> + * @reg: register address
> + * Return: register value if non-negative, -error code otherwise
> + */
> +int dm_mdio_read(struct udevice *mdio_dev, int addr, int devad, int reg);
> +
> +/**
> + * dm_mdio_write - Wrapper over .write() operation for DM MDIO
> + *
> + * @mdiodev: mdio device
> + * @addr: PHY address on MDIO bus
> + * @devad: device address on PHY if C45; should be MDIO_DEVAD_NONE if C22
> + * @reg: register address
> + * @val: value to write
> + * Return: 0 on success, -error code otherwise
> + */
> +int dm_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg, u16 val);
> +
> +/**
> + * dm_mdio_reset - Wrapper over .reset() operation for DM MDIO
> + *
> + * @mdiodev: mdio device
> + * Return: 0 on success, -error code otherwise
> + */
> +int dm_mdio_reset(struct udevice *mdio_dev);
> +
>  /**
>   * dm_mdio_phy_connect - Wrapper over phy_connect for DM MDIO
>   *
> diff --git a/net/mdio-uclass.c b/net/mdio-uclass.c
> index 233b70171b..887c228167 100644
> --- a/net/mdio-uclass.c
> +++ b/net/mdio-uclass.c
> @@ -57,6 +57,37 @@ static int dm_mdio_post_bind(struct udevice *dev)
>         return 0;
>  }
>
> +int dm_mdio_read(struct udevice *mdio_dev, int addr, int devad, int reg)
> +{
> +       struct mdio_ops *ops = mdio_get_ops(mdio_dev);
> +
> +       if (!ops->read)
> +               return -ENOSYS;
> +
> +       return ops->read(mdio_dev, addr, devad, reg);
> +}
> +
> +int dm_mdio_write(struct udevice *mdio_dev, int addr, int devad, int reg,
> +                 u16 val)
> +{
> +       struct mdio_ops *ops = mdio_get_ops(mdio_dev);
> +
> +       if (!ops->write)
> +               return -ENOSYS;
> +
> +       return ops->write(mdio_dev, addr, devad, reg, val);
> +}
> +
> +int dm_mdio_reset(struct udevice *mdio_dev)
> +{
> +       struct mdio_ops *ops = mdio_get_ops(mdio_dev);
> +
> +       if (!ops->reset)
> +               return 0;
> +
> +       return ops->reset(mdio_dev);
> +}
> +
>  /*
>   * Following read/write/reset functions are registered with legacy MII code.
>   * These are called for PHY operations by upper layers and we further call the
> --
> 2.34.1
>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>