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[net-next,10/13] net: mvneta: implement pcs_inband_caps() method

Message ID E1tIUs9-006IUb-Au@rmk-PC.armlinux.org.uk (mailing list archive)
State Accepted
Commit 513e8fb8fa32035b3325e2e14fb9598f8cb545e9
Delegated to: Netdev Maintainers
Headers show
Series net: add negotiation of in-band capabilities | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 304 this patch: 304
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 44 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Russell King (Oracle) Dec. 3, 2024, 3:31 p.m. UTC 
Report the PCS in-band capabilities to phylink for Marvell NETA
interfaces.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/marvell/mvneta.c | 27 +++++++++++++++++----------
 1 file changed, 17 insertions(+), 10 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 1fb285fa0bdb..fe6261b81540 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -3960,20 +3960,27 @@  static struct mvneta_port *mvneta_pcs_to_port(struct phylink_pcs *pcs)
 	return container_of(pcs, struct mvneta_port, phylink_pcs);
 }
 
-static int mvneta_pcs_validate(struct phylink_pcs *pcs,
-			       unsigned long *supported,
-			       const struct phylink_link_state *state)
+static unsigned int mvneta_pcs_inband_caps(struct phylink_pcs *pcs,
+					   phy_interface_t interface)
 {
-	/* We only support QSGMII, SGMII, 802.3z and RGMII modes.
-	 * When in 802.3z mode, we must have AN enabled:
+	/* When operating in an 802.3z mode, we must have AN enabled:
 	 * "Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ...
 	 * When <PortType> = 1 (1000BASE-X) this field must be set to 1."
+	 * Therefore, inband is "required".
 	 */
-	if (phy_interface_mode_is_8023z(state->interface) &&
-	    !phylink_test(state->advertising, Autoneg))
-		return -EINVAL;
+	if (phy_interface_mode_is_8023z(interface))
+		return LINK_INBAND_ENABLE;
 
-	return 0;
+	/* QSGMII, SGMII and RGMII can be configured to use inband
+	 * signalling of the AN result. Indicate these as "possible".
+	 */
+	if (interface == PHY_INTERFACE_MODE_SGMII ||
+	    interface == PHY_INTERFACE_MODE_QSGMII ||
+	    phy_interface_mode_is_rgmii(interface))
+		return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+	/* For any other modes, indicate that inband is not supported. */
+	return LINK_INBAND_DISABLE;
 }
 
 static void mvneta_pcs_get_state(struct phylink_pcs *pcs,
@@ -4071,7 +4078,7 @@  static void mvneta_pcs_an_restart(struct phylink_pcs *pcs)
 }
 
 static const struct phylink_pcs_ops mvneta_phylink_pcs_ops = {
-	.pcs_validate = mvneta_pcs_validate,
+	.pcs_inband_caps = mvneta_pcs_inband_caps,
 	.pcs_get_state = mvneta_pcs_get_state,
 	.pcs_config = mvneta_pcs_config,
 	.pcs_an_restart = mvneta_pcs_an_restart,