Merge branch 'phylink_set_mac_pm'

Shenwei Wang says:

====================
net: phylink: add phylink_set_mac_pm() helper

Per Russell's suggestion, the implementation is changed from the helper
function to add an extra property in phylink_config structure because this
change can easily cover SFP usecase too.

Changes in v6:
 - update the fix tag hash and format

Changes in v5:
 - Add fix tag in the commit message

Changes in v4:
 - Clean up the codes in phylink.c
 - Continue the version number
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -1214,6 +1214,7 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
 	if (priv->plat->tx_queues_to_use > 1)
 		priv->phylink_config.mac_capabilities &=
 			~(MAC_10HD | MAC_100HD | MAC_1000HD);
+	priv->phylink_config.mac_managed_pm = true;
 
 	phylink = phylink_create(&priv->phylink_config, fwnode,
 				 mode, &stmmac_phylink_mac_ops);

drivers/net/phy/phylink.c

@@ -1661,6 +1661,9 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy,
 	if (phy_interrupt_is_valid(phy))
 		phy_request_interrupt(phy);
 
+	if (pl->config->mac_managed_pm)
+		phy->mac_managed_pm = true;
+
 	return 0;
 }
 

include/linux/phylink.h

@@ -122,6 +122,7 @@ enum phylink_op_type {
  *	(See commit 7cceb599d15d ("net: phylink: avoid mac_config calls")
  * @poll_fixed_state: if true, starts link_poll,
  *		      if MAC link is at %MLO_AN_FIXED mode.
+ * @mac_managed_pm: if true, indicate the MAC driver is responsible for PHY PM.
  * @ovr_an_inband: if true, override PCS to MLO_AN_INBAND
  * @get_fixed_state: callback to execute to determine the fixed link state,
  *		     if MAC link is at %MLO_AN_FIXED mode.
@@ -134,6 +135,7 @@ struct phylink_config {
 	enum phylink_op_type type;
 	bool legacy_pre_march2020;
 	bool poll_fixed_state;
+	bool mac_managed_pm;
 	bool ovr_an_inband;
 	void (*get_fixed_state)(struct phylink_config *config,
 				struct phylink_link_state *state);