[PATCH net-next 02/13] net: phy: phylink: Extract the logic to get caps from interface

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

Any given phy_interface_t may be able to convey data at various
combinations of speed and duplex. Extract this logic out of phylink to
make it accessible for other internal computations, as preparation for
phy_port support and phy-side SFP handling.

This commit has no expected changes in behaviour.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
---
 drivers/net/phy/phy-caps.h |  2 +
 drivers/net/phy/phy_caps.c | 91 ++++++++++++++++++++++++++++++++++++++
 drivers/net/phy/phylink.c  | 79 +--------------------------------
 3 files changed, 94 insertions(+), 78 deletions(-)

diff --git a/drivers/net/phy/phy-caps.h b/drivers/net/phy/phy-caps.h
index 99c648f76dea..ecb63b28c5fb 100644
--- a/drivers/net/phy/phy-caps.h
+++ b/drivers/net/phy/phy-caps.h
@@ -9,4 +9,6 @@
 
 void linkmode_from_caps(unsigned long *linkmode, unsigned long caps);
 
+unsigned long phy_interface_caps(phy_interface_t interface);
+
 #endif /* __PHY_CAPS_H */
diff --git a/drivers/net/phy/phy_caps.c b/drivers/net/phy/phy_caps.c
index 807be1317263..59e4505b7336 100644
--- a/drivers/net/phy/phy_caps.c
+++ b/drivers/net/phy/phy_caps.c
@@ -160,3 +160,94 @@ void linkmode_from_caps(unsigned long *linkmodes, unsigned long caps)
 	}
 }
 EXPORT_SYMBOL_GPL(linkmode_from_caps);
+
+/**
+ * phy_interface_caps() - Retrieve the speed/duplex capablities of an interface
+ * @interface: phy_interface_t to get the capabilities from
+ *
+ * Returns: A bitmask of MAC_* capablities for a given interface.
+ */
+unsigned long phy_interface_caps(phy_interface_t interface)
+{
+	unsigned long caps = MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
+
+	switch (interface) {
+	case PHY_INTERFACE_MODE_USXGMII:
+		caps |= MAC_10000FD | MAC_5000FD;
+		fallthrough;
+
+	case PHY_INTERFACE_MODE_10G_QXGMII:
+		caps |= MAC_2500FD;
+		fallthrough;
+
+	case PHY_INTERFACE_MODE_RGMII_TXID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII:
+	case PHY_INTERFACE_MODE_PSGMII:
+	case PHY_INTERFACE_MODE_QSGMII:
+	case PHY_INTERFACE_MODE_QUSGMII:
+	case PHY_INTERFACE_MODE_SGMII:
+	case PHY_INTERFACE_MODE_GMII:
+		caps |= MAC_1000HD | MAC_1000FD;
+		fallthrough;
+
+	case PHY_INTERFACE_MODE_REVRMII:
+	case PHY_INTERFACE_MODE_RMII:
+	case PHY_INTERFACE_MODE_SMII:
+	case PHY_INTERFACE_MODE_REVMII:
+	case PHY_INTERFACE_MODE_MII:
+		caps |= MAC_10HD | MAC_10FD;
+		fallthrough;
+
+	case PHY_INTERFACE_MODE_100BASEX:
+		caps |= MAC_100HD | MAC_100FD;
+		break;
+
+	case PHY_INTERFACE_MODE_TBI:
+	case PHY_INTERFACE_MODE_MOCA:
+	case PHY_INTERFACE_MODE_RTBI:
+	case PHY_INTERFACE_MODE_1000BASEX:
+		caps |= MAC_1000HD;
+		fallthrough;
+	case PHY_INTERFACE_MODE_1000BASEKX:
+	case PHY_INTERFACE_MODE_TRGMII:
+		caps |= MAC_1000FD;
+		break;
+
+	case PHY_INTERFACE_MODE_2500BASEX:
+		caps |= MAC_2500FD;
+		break;
+
+	case PHY_INTERFACE_MODE_5GBASER:
+		caps |= MAC_5000FD;
+		break;
+
+	case PHY_INTERFACE_MODE_XGMII:
+	case PHY_INTERFACE_MODE_RXAUI:
+	case PHY_INTERFACE_MODE_XAUI:
+	case PHY_INTERFACE_MODE_10GBASER:
+	case PHY_INTERFACE_MODE_10GKR:
+		caps |= MAC_10000FD;
+		break;
+
+	case PHY_INTERFACE_MODE_25GBASER:
+		caps |= MAC_25000FD;
+		break;
+
+	case PHY_INTERFACE_MODE_XLGMII:
+		caps |= MAC_40000FD;
+		break;
+
+	case PHY_INTERFACE_MODE_INTERNAL:
+		caps |= ~0;
+		break;
+
+	case PHY_INTERFACE_MODE_NA:
+	case PHY_INTERFACE_MODE_MAX:
+		break;
+	}
+
+	return caps;
+}
+EXPORT_SYMBOL_GPL(phy_interface_caps);
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 3b32be40073e..c05c0921c5d0 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -372,86 +372,9 @@ static unsigned long phylink_get_capabilities(phy_interface_t interface,
 					      int rate_matching)
 {
 	int max_speed = phylink_interface_max_speed(interface);
-	unsigned long caps = MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
+	unsigned long caps = phy_interface_caps(interface);
 	unsigned long matched_caps = 0;
 
-	switch (interface) {
-	case PHY_INTERFACE_MODE_USXGMII:
-		caps |= MAC_10000FD | MAC_5000FD;
-		fallthrough;
-
-	case PHY_INTERFACE_MODE_10G_QXGMII:
-		caps |= MAC_2500FD;
-		fallthrough;
-
-	case PHY_INTERFACE_MODE_RGMII_TXID:
-	case PHY_INTERFACE_MODE_RGMII_RXID:
-	case PHY_INTERFACE_MODE_RGMII_ID:
-	case PHY_INTERFACE_MODE_RGMII:
-	case PHY_INTERFACE_MODE_PSGMII:
-	case PHY_INTERFACE_MODE_QSGMII:
-	case PHY_INTERFACE_MODE_QUSGMII:
-	case PHY_INTERFACE_MODE_SGMII:
-	case PHY_INTERFACE_MODE_GMII:
-		caps |= MAC_1000HD | MAC_1000FD;
-		fallthrough;
-
-	case PHY_INTERFACE_MODE_REVRMII:
-	case PHY_INTERFACE_MODE_RMII:
-	case PHY_INTERFACE_MODE_SMII:
-	case PHY_INTERFACE_MODE_REVMII:
-	case PHY_INTERFACE_MODE_MII:
-		caps |= MAC_10HD | MAC_10FD;
-		fallthrough;
-
-	case PHY_INTERFACE_MODE_100BASEX:
-		caps |= MAC_100HD | MAC_100FD;
-		break;
-
-	case PHY_INTERFACE_MODE_TBI:
-	case PHY_INTERFACE_MODE_MOCA:
-	case PHY_INTERFACE_MODE_RTBI:
-	case PHY_INTERFACE_MODE_1000BASEX:
-		caps |= MAC_1000HD;
-		fallthrough;
-	case PHY_INTERFACE_MODE_1000BASEKX:
-	case PHY_INTERFACE_MODE_TRGMII:
-		caps |= MAC_1000FD;
-		break;
-
-	case PHY_INTERFACE_MODE_2500BASEX:
-		caps |= MAC_2500FD;
-		break;
-
-	case PHY_INTERFACE_MODE_5GBASER:
-		caps |= MAC_5000FD;
-		break;
-
-	case PHY_INTERFACE_MODE_XGMII:
-	case PHY_INTERFACE_MODE_RXAUI:
-	case PHY_INTERFACE_MODE_XAUI:
-	case PHY_INTERFACE_MODE_10GBASER:
-	case PHY_INTERFACE_MODE_10GKR:
-		caps |= MAC_10000FD;
-		break;
-
-	case PHY_INTERFACE_MODE_25GBASER:
-		caps |= MAC_25000FD;
-		break;
-
-	case PHY_INTERFACE_MODE_XLGMII:
-		caps |= MAC_40000FD;
-		break;
-
-	case PHY_INTERFACE_MODE_INTERNAL:
-		caps |= ~0;
-		break;
-
-	case PHY_INTERFACE_MODE_NA:
-	case PHY_INTERFACE_MODE_MAX:
-		break;
-	}
-
 	switch (rate_matching) {
 	case RATE_MATCH_OPEN_LOOP:
 		/* TODO */
-- 
2.48.1