net: usb: r8152: Use linkmode helpers for EEE

Make use of the existing linkmode helpers for converting PHY EEE
register values into links modes, now that ethtool_keee uses link
modes, rather than u32 values.

Rework determining if EEE is active to make is similar as to how
phylib decides, and make use of a phylib helper to validate if EEE is
valid in for the current link mode. This then requires that PHYLIB is
selected.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/Kconfig

@@ -99,6 +99,7 @@ config USB_RTL8150
 config USB_RTL8152
 	tristate "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters"
 	select MII
+	select PHYLIB
 	select CRC32
 	select CRYPTO
 	select CRYPTO_HASH

drivers/net/usb/r8152.c

@@ -10,6 +10,7 @@
 #include <linux/etherdevice.h>
 #include <linux/mii.h>
 #include <linux/ethtool.h>
+#include <linux/phy.h>
 #include <linux/usb.h>
 #include <linux/crc32.h>
 #include <linux/if_vlan.h>
@@ -8924,30 +8925,29 @@ static void rtl8152_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 
 static int r8152_get_eee(struct r8152 *tp, struct ethtool_keee *eee)
 {
-	u32 lp, adv, supported = 0;
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
 	u16 val;
 
 	val = r8152_mmd_read(tp, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
-	supported = mmd_eee_cap_to_ethtool_sup_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->supported, val);
 
 	val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
-	adv = mmd_eee_adv_to_ethtool_adv_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->advertised, val);
 
 	val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
-	lp = mmd_eee_adv_to_ethtool_adv_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->lp_advertised, val);
 
 	eee->eee_enabled = tp->eee_en;
-	eee->eee_active = !!(supported & adv & lp);
-	eee->supported_u32 = supported;
-	eee->advertised_u32 = tp->eee_adv;
-	eee->lp_advertised_u32 = lp;
+
+	linkmode_and(common, eee->advertised, eee->lp_advertised);
+	eee->eee_active = phy_check_valid(tp->speed, tp->duplex, common);
 
 	return 0;
 }
 
 static int r8152_set_eee(struct r8152 *tp, struct ethtool_keee *eee)
 {
-	u16 val = ethtool_adv_to_mmd_eee_adv_t(eee->advertised_u32);
+	u16 val = linkmode_to_mii_eee_cap1_t(eee->advertised);
 
 	tp->eee_en = eee->eee_enabled;
 	tp->eee_adv = val;
@@ -8959,23 +8959,22 @@ static int r8152_set_eee(struct r8152 *tp, struct ethtool_keee *eee)
 
 static int r8153_get_eee(struct r8152 *tp, struct ethtool_keee *eee)
 {
-	u32 lp, adv, supported = 0;
+	__ETHTOOL_DECLARE_LINK_MODE_MASK(common);
 	u16 val;
 
 	val = ocp_reg_read(tp, OCP_EEE_ABLE);
-	supported = mmd_eee_cap_to_ethtool_sup_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->supported, val);
 
 	val = ocp_reg_read(tp, OCP_EEE_ADV);
-	adv = mmd_eee_adv_to_ethtool_adv_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->advertised, val);
 
 	val = ocp_reg_read(tp, OCP_EEE_LPABLE);
-	lp = mmd_eee_adv_to_ethtool_adv_t(val);
+	mii_eee_cap1_mod_linkmode_t(eee->lp_advertised, val);
 
 	eee->eee_enabled = tp->eee_en;
-	eee->eee_active = !!(supported & adv & lp);
-	eee->supported_u32 = supported;
-	eee->advertised_u32 = tp->eee_adv;
-	eee->lp_advertised_u32 = lp;
+
+	linkmode_and(common, eee->advertised, eee->lp_advertised);
+	eee->eee_active = phy_check_valid(tp->speed, tp->duplex, common);
 
 	return 0;
 }