netdev - [PATCH net-next 1/2] net: mii: convert mii_lpa_to_ethtool_lpa

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Message-Id: <E1jD3jt-000664-PK@rmk-PC.armlinux.org.uk>
Date:   Sat, 14 Mar 2020 10:09:53 +0000
From:   Russell King <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH net-next 1/2] net: mii: convert mii_lpa_to_ethtool_lpa_x() to
 linkmode variant

Add a LPA to linkmode decoder for 1000BASE-X protocols; this decoder
only provides the modify semantics similar to other such decoders.
This replaces the unused mii_lpa_to_ethtool_lpa_x() helper.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 include/linux/mii.h | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/include/linux/mii.h b/include/linux/mii.h
index 18c6208f56fc..309de4a3e6e7 100644
--- a/include/linux/mii.h
+++ b/include/linux/mii.h
@@ -354,24 +354,6 @@ static inline u32 mii_adv_to_ethtool_adv_x(u32 adv)
 	return result;
 }
 
-/**
- * mii_lpa_to_ethtool_lpa_x
- * @adv: value of the MII_LPA register
- *
- * A small helper function that translates MII_LPA
- * bits, when in 1000Base-X mode, to ethtool
- * LP advertisement settings.
- */
-static inline u32 mii_lpa_to_ethtool_lpa_x(u32 lpa)
-{
-	u32 result = 0;
-
-	if (lpa & LPA_LPACK)
-		result |= ADVERTISED_Autoneg;
-
-	return result | mii_adv_to_ethtool_adv_x(lpa);
-}
-
 /**
  * mii_lpa_mod_linkmode_adv_sgmii
  * @lp_advertising: pointer to destination link mode.
@@ -535,6 +517,25 @@ static inline u32 linkmode_adv_to_lcl_adv_t(unsigned long *advertising)
 	return lcl_adv;
 }
 
+/**
+ * mii_lpa_mod_linkmode_x - decode the link partner's config_reg to linkmodes
+ * @linkmodes: link modes array
+ * @lpa: config_reg word from link partner
+ * @fd_bit: link mode for 1000XFULL bit
+ */
+static inline void mii_lpa_mod_linkmode_x(unsigned long *linkmodes, u16 lpa,
+					 int fd_bit)
+{
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, linkmodes,
+			 lpa & LPA_LPACK);
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Pause_BIT, linkmodes,
+			 lpa & LPA_1000XPAUSE);
+	linkmode_mod_bit(ETHTOOL_LINK_MODE_Asym_Pause_BIT, linkmodes,
+			 lpa & LPA_1000XPAUSE_ASYM);
+	linkmode_mod_bit(fd_bit, linkmodes,
+			 lpa & LPA_1000XFULL);
+}
+
 /**
  * mii_advertise_flowctrl - get flow control advertisement flags
  * @cap: Flow control capabilities (FLOW_CTRL_RX, FLOW_CTRL_TX or both)
-- 
2.20.1