[PATCH net-next v5 11/15] net: phy: ncn26000: Support for loopback

From: Selvamani Rajagopal <redacted>

Adding loopback support for S2500 internal PHY to help running
loopback test through ethtool.

This instance requires only manipulating the loopback bit in
the PHY. nothing else. The existing genphy interface
implementation for loopback, does more than flipping the
loopback bit. This is the reason to add a new API.

Signed-off-by: Selvamani Rajagopal <redacted>

---
changes in v5
  - No change
changes in v4
  - Moved the onsemi implementation to a new, genphy API to
    make it vendor agnostic.
changes in v3
  - Addd loopback functionality for onsemi's PHY driver
  - First patch
---
 drivers/net/phy/ncn26000.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/phy/ncn26000.c b/drivers/net/phy/ncn26000.c
index c3a34b2c524d..afafa81dc22b 100644
--- a/drivers/net/phy/ncn26000.c
+++ b/drivers/net/phy/ncn26000.c

@@ -178,6 +178,7 @@ static struct phy_driver ncn26000_driver[] = {
 		.config_aneg           = ncn26000_config_aneg,
 		.read_status           = ncn26000_read_status,
 		.handle_interrupt      = ncn26000_handle_interrupt,
+		.set_loopback          = genphy_loopback_fixed_speed,
 		.set_plca_cfg          = ncn26000_c45_plca_set_cfg,
 		.get_plca_cfg          = genphy_c45_plca_get_cfg,
 		.get_plca_status       = genphy_c45_plca_get_status,

-- 
2.43.0