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- // SPDX-License-Identifier: GPL-2.0+
- /* Driver for Asix PHYs
- *
- * Author: Michael Schmitz <schmitzmic@gmail.com>
- */
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/mii.h>
- #include <linux/phy.h>
- #define PHY_ID_ASIX_AX88796B 0x003b1841
- MODULE_DESCRIPTION("Asix PHY driver");
- MODULE_AUTHOR("Michael Schmitz <schmitzmic@gmail.com>");
- MODULE_LICENSE("GPL");
- /**
- * asix_soft_reset - software reset the PHY via BMCR_RESET bit
- * @phydev: target phy_device struct
- *
- * Description: Perform a software PHY reset using the standard
- * BMCR_RESET bit and poll for the reset bit to be cleared.
- * Toggle BMCR_RESET bit off to accommodate broken AX8796B PHY implementation
- * such as used on the Individual Computers' X-Surf 100 Zorro card.
- *
- * Returns: 0 on success, < 0 on failure
- */
- static int asix_soft_reset(struct phy_device *phydev)
- {
- int ret;
- /* Asix PHY won't reset unless reset bit toggles */
- ret = phy_write(phydev, MII_BMCR, 0);
- if (ret < 0)
- return ret;
- return genphy_soft_reset(phydev);
- }
- static struct phy_driver asix_driver[] = { {
- .phy_id = PHY_ID_ASIX_AX88796B,
- .name = "Asix Electronics AX88796B",
- .phy_id_mask = 0xfffffff0,
- /* PHY_BASIC_FEATURES */
- .soft_reset = asix_soft_reset,
- } };
- module_phy_driver(asix_driver);
- static struct mdio_device_id __maybe_unused asix_tbl[] = {
- { PHY_ID_ASIX_AX88796B, 0xfffffff0 },
- { }
- };
- MODULE_DEVICE_TABLE(mdio, asix_tbl);
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