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72 lines
2.2 KiB
72 lines
2.2 KiB
10 years ago
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commit 797ac07137d9ae8572008e21e6123a9ae17dae50
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Author: Florian Fainelli <f.fainelli@gmail.com>
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Date: Mon Feb 17 13:34:02 2014 -0800
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net: phy: move PHY software reset to genphy_soft_reset
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As pointed out by Shaohui, this function is generic for 10/100/1000
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PHYs, but 10G PHYs might have a slightly different reset sequence which
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prevents most of them from using this function.
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Move the BMCR_RESET based software resent sequence to
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genphy_soft_reset() in preparation for allowing PHY drivers to implement
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a soft_reset() callback.
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Reported-by: Shaohui Xie <Shaohui.Xie@freescale.com>
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Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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--- a/drivers/net/phy/phy_device.c
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+++ b/drivers/net/phy/phy_device.c
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@@ -539,11 +539,7 @@ int phy_init_hw(struct phy_device *phyde
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if (!phydev->drv || !phydev->drv->config_init)
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return 0;
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- ret = phy_write(phydev, MII_BMCR, BMCR_RESET);
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- if (ret < 0)
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- return ret;
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-
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- ret = phy_poll_reset(phydev);
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+ ret = genphy_soft_reset(phydev);
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if (ret < 0)
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return ret;
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@@ -1029,6 +1025,27 @@ static int gen10g_read_status(struct phy
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return 0;
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}
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+/**
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+ * genphy_soft_reset - software reset the PHY via BMCR_RESET bit
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+ * @phydev: target phy_device struct
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+ *
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+ * Description: Perform a software PHY reset using the standard
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+ * BMCR_RESET bit and poll for the reset bit to be cleared.
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+ *
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+ * Returns: 0 on success, < 0 on failure
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+ */
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+int genphy_soft_reset(struct phy_device *phydev)
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+{
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+ int ret;
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+
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+ ret = phy_write(phydev, MII_BMCR, BMCR_RESET);
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+ if (ret < 0)
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+ return ret;
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+
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+ return phy_poll_reset(phydev);
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+}
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+EXPORT_SYMBOL(genphy_soft_reset);
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+
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static int genphy_config_init(struct phy_device *phydev)
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{
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int val;
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--- a/include/linux/phy.h
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+++ b/include/linux/phy.h
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@@ -616,6 +616,7 @@ int genphy_update_link(struct phy_device
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int genphy_read_status(struct phy_device *phydev);
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int genphy_suspend(struct phy_device *phydev);
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int genphy_resume(struct phy_device *phydev);
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+int genphy_soft_reset(struct phy_device *phydev);
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void phy_driver_unregister(struct phy_driver *drv);
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void phy_drivers_unregister(struct phy_driver *drv, int n);
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int phy_driver_register(struct phy_driver *new_driver);
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