[PATCH 5.8 063/124] net: dsa: felix: convert TAS link speed based on phylink speed

[Greg Kroah-Hartman]

From: Xiaoliang Yang <xiaoliang.yang_1@xxxxxxx>

[ Upstream commit dba1e4660a87927bdc03c23e36fd2c81a16a7ab1 ]

state->speed holds a value of 10, 100, 1000 or 2500, but
QSYS_TAG_CONFIG_LINK_SPEED expects a value of 0, 1, 2, 3. So convert the
speed to a proper value.

Fixes: de143c0e274b ("net: dsa: felix: Configure Time-Aware Scheduler via taprio offload")
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@xxxxxxx>
Reviewed-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/dsa/ocelot/felix_vsc9959.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 7c167a394b762..a83ecd1c5d6c2 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1215,8 +1215,28 @@ static void vsc9959_mdio_bus_free(struct ocelot *ocelot)
 static void vsc9959_sched_speed_set(struct ocelot *ocelot, int port,
 				    u32 speed)
 {
+	u8 tas_speed;
+
+	switch (speed) {
+	case SPEED_10:
+		tas_speed = OCELOT_SPEED_10;
+		break;
+	case SPEED_100:
+		tas_speed = OCELOT_SPEED_100;
+		break;
+	case SPEED_1000:
+		tas_speed = OCELOT_SPEED_1000;
+		break;
+	case SPEED_2500:
+		tas_speed = OCELOT_SPEED_2500;
+		break;
+	default:
+		tas_speed = OCELOT_SPEED_1000;
+		break;
+	}
+
 	ocelot_rmw_rix(ocelot,
-		       QSYS_TAG_CONFIG_LINK_SPEED(speed),
+		       QSYS_TAG_CONFIG_LINK_SPEED(tas_speed),
 		       QSYS_TAG_CONFIG_LINK_SPEED_M,
 		       QSYS_TAG_CONFIG, port);
 }
-- 
2.25.1