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8a9273d51e
Copy backport, hack, pending patch and config from 6.1 to 6.6. Signed-off-by: Weijie Gao <hackpascal@gmail.com>
101 lines
3.3 KiB
Diff
101 lines
3.3 KiB
Diff
From 9b1d5e055508393561e26bd1720f4c2639b03b1a Mon Sep 17 00:00:00 2001
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From: Christian Marangi <ansuelsmth@gmail.com>
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Date: Tue, 6 Feb 2024 18:31:09 +0100
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Subject: [PATCH 06/10] net: phy: provide whether link has changed in
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c37_read_status
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Some PHY driver might require additional regs call after
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genphy_c37_read_status() is called.
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Expand genphy_c37_read_status to provide a bool wheather the link has
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changed or not to permit PHY driver to skip additional regs call if
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nothing has changed.
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Every user of genphy_c37_read_status() is updated with the new
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additional bool.
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Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/phy/broadcom.c | 3 ++-
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drivers/net/phy/phy_device.c | 11 +++++++++--
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drivers/net/phy/qcom/at803x.c | 3 ++-
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include/linux/phy.h | 2 +-
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4 files changed, 14 insertions(+), 5 deletions(-)
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--- a/drivers/net/phy/broadcom.c
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+++ b/drivers/net/phy/broadcom.c
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@@ -609,10 +609,11 @@ static int bcm54616s_config_aneg(struct
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static int bcm54616s_read_status(struct phy_device *phydev)
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{
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struct bcm54616s_phy_priv *priv = phydev->priv;
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+ bool changed;
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int err;
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if (priv->mode_1000bx_en)
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- err = genphy_c37_read_status(phydev);
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+ err = genphy_c37_read_status(phydev, &changed);
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else
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err = genphy_read_status(phydev);
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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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@@ -2549,12 +2549,15 @@ EXPORT_SYMBOL(genphy_read_status);
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/**
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* genphy_c37_read_status - check the link status and update current link state
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* @phydev: target phy_device struct
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+ * @changed: pointer where to store if link changed
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*
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* Description: Check the link, then figure out the current state
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* by comparing what we advertise with what the link partner
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* advertises. This function is for Clause 37 1000Base-X mode.
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+ *
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+ * If link has changed, @changed is set to true, false otherwise.
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*/
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-int genphy_c37_read_status(struct phy_device *phydev)
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+int genphy_c37_read_status(struct phy_device *phydev, bool *changed)
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{
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int lpa, err, old_link = phydev->link;
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@@ -2564,9 +2567,13 @@ int genphy_c37_read_status(struct phy_de
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return err;
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/* why bother the PHY if nothing can have changed */
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- if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link)
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+ if (phydev->autoneg == AUTONEG_ENABLE && old_link && phydev->link) {
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+ *changed = false;
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return 0;
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+ }
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+ /* Signal link has changed */
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+ *changed = true;
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phydev->duplex = DUPLEX_UNKNOWN;
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phydev->pause = 0;
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phydev->asym_pause = 0;
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--- a/drivers/net/phy/qcom/at803x.c
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+++ b/drivers/net/phy/qcom/at803x.c
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@@ -912,9 +912,10 @@ static int at8031_config_intr(struct phy
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static int at8031_read_status(struct phy_device *phydev)
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{
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struct at803x_priv *priv = phydev->priv;
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+ bool changed;
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if (priv->is_1000basex)
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- return genphy_c37_read_status(phydev);
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+ return genphy_c37_read_status(phydev, &changed);
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return at803x_read_status(phydev);
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}
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--- a/include/linux/phy.h
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+++ b/include/linux/phy.h
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@@ -1688,7 +1688,7 @@ int genphy_write_mmd_unsupported(struct
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/* Clause 37 */
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int genphy_c37_config_aneg(struct phy_device *phydev);
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-int genphy_c37_read_status(struct phy_device *phydev);
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+int genphy_c37_read_status(struct phy_device *phydev, bool *changed);
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/* Clause 45 PHY */
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int genphy_c45_restart_aneg(struct phy_device *phydev);
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