net: cadence: macb: convert from round_rate() to determine_rate()

The round_rate() clk ops is deprecated, so migrate this driver from
round_rate() to determine_rate().

Signed-off-by: Brian Masney <[e-mail]>
Reviewed-by: Jacob Keller <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Paolo Abeni <[e-mail]>

drivers/net/ethernet/cadence/macb_main.c

···
 	return mgmt->rate;
 }
 
-static long fu540_macb_tx_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *parent_rate)
+static int fu540_macb_tx_determine_rate(struct clk_hw *hw,
+					struct clk_rate_request *req)
 {
-	if (WARN_ON(rate < 2500000))
-		return 2500000;
-	else if (rate == 2500000)
-		return 2500000;
-	else if (WARN_ON(rate < 13750000))
-		return 2500000;
-	else if (WARN_ON(rate < 25000000))
-		return 25000000;
-	else if (rate == 25000000)
-		return 25000000;
-	else if (WARN_ON(rate < 75000000))
-		return 25000000;
-	else if (WARN_ON(rate < 125000000))
-		return 125000000;
-	else if (rate == 125000000)
-		return 125000000;
+	if (WARN_ON(req->rate < 2500000))
+		req->rate = 2500000;
+	else if (req->rate == 2500000)
+		req->rate = 2500000;
+	else if (WARN_ON(req->rate < 13750000))
+		req->rate = 2500000;
+	else if (WARN_ON(req->rate < 25000000))
+		req->rate = 25000000;
+	else if (req->rate == 25000000)
+		req->rate = 25000000;
+	else if (WARN_ON(req->rate < 75000000))
+		req->rate = 25000000;
+	else if (WARN_ON(req->rate < 125000000))
+		req->rate = 125000000;
+	else if (req->rate == 125000000)
+		req->rate = 125000000;
+	else if (WARN_ON(req->rate > 125000000))
+		req->rate = 125000000;
+	else
+		req->rate = 125000000;
 
-	WARN_ON(rate > 125000000);
-
-	return 125000000;
+	return 0;
 }
 
 static int fu540_macb_tx_set_rate(struct clk_hw *hw, unsigned long rate,
 				  unsigned long parent_rate)
 {
-	rate = fu540_macb_tx_round_rate(hw, rate, &parent_rate);
-	if (rate != 125000000)
+	struct clk_rate_request req;
+	int ret;
+
+	clk_hw_init_rate_request(hw, &req, rate);
+	ret = fu540_macb_tx_determine_rate(hw, &req);
+	if (ret != 0)
+		return ret;
+
+	if (req.rate != 125000000)
 		iowrite32(1, mgmt->reg);
 	else
 		iowrite32(0, mgmt->reg);
···
 
 static const struct clk_ops fu540_c000_ops = {
 	.recalc_rate = fu540_macb_tx_recalc_rate,
-	.round_rate = fu540_macb_tx_round_rate,
+	.determine_rate = fu540_macb_tx_determine_rate,
 	.set_rate = fu540_macb_tx_set_rate,
 };