netdev - [PATCH v2] net: ibm: emac: support RGMII-[RX|TX]ID phymode

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Date:   Wed, 20 Dec 2017 17:02:01 +0100
From:   Christian Lamparter <chunkeey@...il.com>
To:     netdev@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Christophe Jaillet <christophe.jaillet@...adoo.fr>
Subject: [PATCH v2] net: ibm: emac: support RGMII-[RX|TX]ID phymode

The RGMII spec allows compliance for devices that implement an internal
delay on TXC and/or RXC inside the transmitter. This patch adds the
necessary RGMII_[RX|TX]ID mode code to handle such PHYs with the
emac driver.

Signed-off-by: Christian Lamparter <chunkeey@...il.com>

---
v2: - utilize phy_interface_mode_is_rgmii()
---
 drivers/net/ethernet/ibm/emac/core.c  |  4 ++--
 drivers/net/ethernet/ibm/emac/emac.h  |  3 +++
 drivers/net/ethernet/ibm/emac/rgmii.c | 10 ++++++++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 7feff2450ed6..043e72e28bba 100644
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -199,8 +199,8 @@ static void __emac_set_multicast_list(struct emac_instance *dev);
 
 static inline int emac_phy_supports_gige(int phy_mode)
 {
-	return  phy_mode == PHY_MODE_GMII ||
-		phy_mode == PHY_MODE_RGMII ||
+	return  phy_interface_mode_is_rgmii(phy_mode) ||
+		phy_mode == PHY_MODE_GMII ||
 		phy_mode == PHY_MODE_SGMII ||
 		phy_mode == PHY_MODE_TBI ||
 		phy_mode == PHY_MODE_RTBI;
diff --git a/drivers/net/ethernet/ibm/emac/emac.h b/drivers/net/ethernet/ibm/emac/emac.h
index 5afcc27ceebb..8c6d2af7281b 100644
--- a/drivers/net/ethernet/ibm/emac/emac.h
+++ b/drivers/net/ethernet/ibm/emac/emac.h
@@ -112,6 +112,9 @@ struct emac_regs {
 #define PHY_MODE_RMII	PHY_INTERFACE_MODE_RMII
 #define PHY_MODE_SMII	PHY_INTERFACE_MODE_SMII
 #define PHY_MODE_RGMII	PHY_INTERFACE_MODE_RGMII
+#define PHY_MODE_RGMII_ID	PHY_INTERFACE_MODE_RGMII_ID
+#define PHY_MODE_RGMII_RXID	PHY_INTERFACE_MODE_RGMII_RXID
+#define PHY_MODE_RGMII_TXID	PHY_INTERFACE_MODE_RGMII_TXID
 #define PHY_MODE_TBI	PHY_INTERFACE_MODE_TBI
 #define PHY_MODE_GMII	PHY_INTERFACE_MODE_GMII
 #define PHY_MODE_RTBI	PHY_INTERFACE_MODE_RTBI
diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index c4a1ac38bba8..124b0473d2b7 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -52,9 +52,9 @@
 /* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */
 static inline int rgmii_valid_mode(int phy_mode)
 {
-	return  phy_mode == PHY_MODE_GMII ||
+	return  phy_interface_mode_is_rgmii(phy_mode) ||
+		phy_mode == PHY_MODE_GMII ||
 		phy_mode == PHY_MODE_MII ||
-		phy_mode == PHY_MODE_RGMII ||
 		phy_mode == PHY_MODE_TBI ||
 		phy_mode == PHY_MODE_RTBI;
 }
@@ -63,6 +63,9 @@ static inline const char *rgmii_mode_name(int mode)
 {
 	switch (mode) {
 	case PHY_MODE_RGMII:
+	case PHY_MODE_RGMII_ID:
+	case PHY_MODE_RGMII_RXID:
+	case PHY_MODE_RGMII_TXID:
 		return "RGMII";
 	case PHY_MODE_TBI:
 		return "TBI";
@@ -81,6 +84,9 @@ static inline u32 rgmii_mode_mask(int mode, int input)
 {
 	switch (mode) {
 	case PHY_MODE_RGMII:
+	case PHY_MODE_RGMII_ID:
+	case PHY_MODE_RGMII_RXID:
+	case PHY_MODE_RGMII_TXID:
 		return RGMII_FER_RGMII(input);
 	case PHY_MODE_TBI:
 		return RGMII_FER_TBI(input);
-- 
2.15.1