[PATCH net-next v8 09/15] net: dwmac-starfive: Use helper rgmii_clock

[Jan Petrous via B4 Relay <devnull+jan.petrous.oss.nxp.com@xxxxxxxxxx>]

From: "Jan Petrous (OSS)" <jan.petrous@xxxxxxxxxxx>

Utilize a new helper function rgmii_clock().

Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Reviewed-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@xxxxxxxxxxxxx>
Signed-off-by: Jan Petrous (OSS) <jan.petrous@xxxxxxxxxxx>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c | 19 ++++---------------
 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 421666279dd3..0a0a363d3730 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -34,24 +34,13 @@ struct starfive_dwmac {
 static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
 {
 	struct starfive_dwmac *dwmac = priv;
-	unsigned long rate;
+	long rate;
 	int err;
 
-	rate = clk_get_rate(dwmac->clk_tx);
-
-	switch (speed) {
-	case SPEED_1000:
-		rate = 125000000;
-		break;
-	case SPEED_100:
-		rate = 25000000;
-		break;
-	case SPEED_10:
-		rate = 2500000;
-		break;
-	default:
+	rate = rgmii_clock(speed);
+	if (rate < 0) {
 		dev_err(dwmac->dev, "invalid speed %u\n", speed);
-		break;
+		return;
 	}
 
 	err = clk_set_rate(dwmac->clk_tx, rate);

-- 
2.47.0