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From: Claudiu Beznea <claudiu.beznea@microchip.com>
To: <davem@davemloft.net>, <kuba@kernel.org>, <robh+dt@kernel.org>,
	<nicolas.ferre@microchip.com>, <linux@armlinux.org.uk>,
	<paul.walmsley@sifive.com>, <palmer@dabbelt.com>
Cc: <yash.shah@sifive.com>, <netdev@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-riscv@lists.infradead.org>,
	Claudiu Beznea <claudiu.beznea@microchip.com>
Subject: [PATCH v2 3/8] net: macb: add function to disable all macb clocks
Date: Mon, 7 Dec 2020 14:15:28 +0200	[thread overview]
Message-ID: <1607343333-26552-4-git-send-email-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <1607343333-26552-1-git-send-email-claudiu.beznea@microchip.com>

Add function to disable all macb clocks.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
---
 drivers/net/ethernet/cadence/macb_main.c | 62 ++++++++++++++++----------------
 1 file changed, 32 insertions(+), 30 deletions(-)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index b23e986ac6dc..6b8e1109dfd3 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -3694,6 +3694,16 @@ static void macb_probe_queues(void __iomem *mem,
 	*num_queues = hweight32(*queue_mask);
 }
 
+static void macb_clks_disable(struct clk *pclk, struct clk *hclk, struct clk *tx_clk,
+			      struct clk *rx_clk, struct clk *tsu_clk)
+{
+	clk_disable_unprepare(tx_clk);
+	clk_disable_unprepare(hclk);
+	clk_disable_unprepare(pclk);
+	clk_disable_unprepare(rx_clk);
+	clk_disable_unprepare(tsu_clk);
+}
+
 static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
 			 struct clk **hclk, struct clk **tx_clk,
 			 struct clk **rx_clk, struct clk **tsu_clk)
@@ -3743,40 +3753,37 @@ static int macb_clk_init(struct platform_device *pdev, struct clk **pclk,
 	err = clk_prepare_enable(*hclk);
 	if (err) {
 		dev_err(&pdev->dev, "failed to enable hclk (%d)\n", err);
-		goto err_disable_pclk;
+		hclk = NULL;
+		tx_clk = NULL;
+		rx_clk = NULL;
+		goto err_disable_clks;
 	}
 
 	err = clk_prepare_enable(*tx_clk);
 	if (err) {
 		dev_err(&pdev->dev, "failed to enable tx_clk (%d)\n", err);
-		goto err_disable_hclk;
+		tx_clk = NULL;
+		rx_clk = NULL;
+		goto err_disable_clks;
 	}
 
 	err = clk_prepare_enable(*rx_clk);
 	if (err) {
 		dev_err(&pdev->dev, "failed to enable rx_clk (%d)\n", err);
-		goto err_disable_txclk;
+		rx_clk = NULL;
+		goto err_disable_clks;
 	}
 
 	err = clk_prepare_enable(*tsu_clk);
 	if (err) {
 		dev_err(&pdev->dev, "failed to enable tsu_clk (%d)\n", err);
-		goto err_disable_rxclk;
+		goto err_disable_clks;
 	}
 
 	return 0;
 
-err_disable_rxclk:
-	clk_disable_unprepare(*rx_clk);
-
-err_disable_txclk:
-	clk_disable_unprepare(*tx_clk);
-
-err_disable_hclk:
-	clk_disable_unprepare(*hclk);
-
-err_disable_pclk:
-	clk_disable_unprepare(*pclk);
+err_disable_clks:
+	macb_clks_disable(*pclk, *hclk, *tx_clk, *rx_clk, NULL);
 
 	return err;
 }
@@ -4755,11 +4762,7 @@ static int macb_probe(struct platform_device *pdev)
 	free_netdev(dev);
 
 err_disable_clocks:
-	clk_disable_unprepare(tx_clk);
-	clk_disable_unprepare(hclk);
-	clk_disable_unprepare(pclk);
-	clk_disable_unprepare(rx_clk);
-	clk_disable_unprepare(tsu_clk);
+	macb_clks_disable(bp->pclk, bp->hclk, bp->tx_clk, bp->rx_clk, bp->tsu_clk);
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
@@ -4784,11 +4787,8 @@ static int macb_remove(struct platform_device *pdev)
 		pm_runtime_disable(&pdev->dev);
 		pm_runtime_dont_use_autosuspend(&pdev->dev);
 		if (!pm_runtime_suspended(&pdev->dev)) {
-			clk_disable_unprepare(bp->tx_clk);
-			clk_disable_unprepare(bp->hclk);
-			clk_disable_unprepare(bp->pclk);
-			clk_disable_unprepare(bp->rx_clk);
-			clk_disable_unprepare(bp->tsu_clk);
+			macb_clks_disable(bp->pclk, bp->hclk, bp->tx_clk,
+					  bp->rx_clk, bp->tsu_clk);
 			pm_runtime_set_suspended(&pdev->dev);
 		}
 		phylink_destroy(bp->phylink);
@@ -4966,14 +4966,16 @@ static int __maybe_unused macb_runtime_suspend(struct device *dev)
 {
 	struct net_device *netdev = dev_get_drvdata(dev);
 	struct macb *bp = netdev_priv(netdev);
+	struct clk *pclk = NULL, *hclk = NULL, *tx_clk = NULL, *rx_clk = NULL;
 
 	if (!(device_may_wakeup(dev))) {
-		clk_disable_unprepare(bp->tx_clk);
-		clk_disable_unprepare(bp->hclk);
-		clk_disable_unprepare(bp->pclk);
-		clk_disable_unprepare(bp->rx_clk);
+		pclk = bp->pclk;
+		hclk = bp->hclk;
+		tx_clk = bp->tx_clk;
+		rx_clk = bp->rx_clk;
 	}
-	clk_disable_unprepare(bp->tsu_clk);
+
+	macb_clks_disable(pclk, hclk, tx_clk, rx_clk, bp->tsu_clk);
 
 	return 0;
 }
-- 
2.7.4


  parent reply	other threads:[~2020-12-07 12:17 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-07 12:15 [PATCH v2 0/8] net: macb: add support for sama7g5 Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 1/8] net: macb: add userio bits as platform configuration Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 2/8] net: macb: add capability to not set the clock rate Claudiu Beznea
2020-12-07 12:15 ` Claudiu Beznea [this message]
2020-12-08 18:48   ` [PATCH v2 3/8] net: macb: add function to disable all macb clocks Andrew Lunn
2020-12-09  0:22     ` Jakub Kicinski
2020-12-09  0:29   ` Florian Fainelli
2020-12-07 12:15 ` [PATCH v2 4/8] net: macb: unprepare clocks in case of failure Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 5/8] dt-bindings: add documentation for sama7g5 ethernet interface Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 6/8] dt-bindings: add documentation for sama7g5 gigabit " Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 7/8] net: macb: add support for sama7g5 gem interface Claudiu Beznea
2020-12-07 12:15 ` [PATCH v2 8/8] net: macb: add support for sama7g5 emac interface Claudiu Beznea

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