Merge branch 'fec_regulator_suspend_resume'

Fabio Estevam says:

====================
This series provides support for controlling the PHY regulator in suspend/resume.

Fabio Estevam (5):
  fec: Place the phy regulator in the private structure
  fec: Invert the order of error path sequence
  fec: Disable the PHY regulator on error and removal
  fec: Remove irqs first
  fec: Handle the regulator in suspend/resume
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 27 insertions, 11 deletions

diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index 9ce5b71..b11cdbc 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -272,6 +272,7 @@ struct fec_enet_private {
 	int hwts_tx_en;
 	struct timer_list time_keep;
 	struct fec_enet_delayed_work delay_work;
+	struct regulator *reg_phy;
 };
 
 void fec_ptp_init(struct net_device *ndev, struct platform_device *pdev);
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 0936b26..866b922 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1840,7 +1840,6 @@ fec_probe(struct platform_device *pdev)
 	struct resource *r;
 	const struct of_device_id *of_id;
 	static int dev_id;
-	struct regulator *reg_phy;
 
 	of_id = of_match_device(fec_dt_ids, &pdev->dev);
 	if (of_id)
@@ -1919,14 +1918,16 @@ fec_probe(struct platform_device *pdev)
 	clk_prepare_enable(fep->clk_enet_out);
 	clk_prepare_enable(fep->clk_ptp);
 
-	reg_phy = devm_regulator_get(&pdev->dev, "phy");
-	if (!IS_ERR(reg_phy)) {
-		ret = regulator_enable(reg_phy);
+	fep->reg_phy = devm_regulator_get(&pdev->dev, "phy");
+	if (!IS_ERR(fep->reg_phy)) {
+		ret = regulator_enable(fep->reg_phy);
 		if (ret) {
 			dev_err(&pdev->dev,
 				"Failed to enable phy regulator: %d\n", ret);
 			goto failed_regulator;
 		}
+	} else {
+		fep->reg_phy = NULL;
 	}
 
 	fec_reset_phy(pdev);
@@ -1976,13 +1977,15 @@ fec_probe(struct platform_device *pdev)
 failed_register:
 	fec_enet_mii_remove(fep);
 failed_mii_init:
-failed_init:
+failed_irq:
 	for (i = 0; i < FEC_IRQ_NUM; i++) {
 		irq = platform_get_irq(pdev, i);
 		if (irq > 0)
 			free_irq(irq, ndev);
 	}
-failed_irq:
+failed_init:
+	if (fep->reg_phy)
+		regulator_disable(fep->reg_phy);
 failed_regulator:
 	clk_disable_unprepare(fep->clk_ahb);
 	clk_disable_unprepare(fep->clk_ipg);
@@ -2006,17 +2009,19 @@ fec_drv_remove(struct platform_device *pdev)
 	unregister_netdev(ndev);
 	fec_enet_mii_remove(fep);
 	del_timer_sync(&fep->time_keep);
+	for (i = 0; i < FEC_IRQ_NUM; i++) {
+		int irq = platform_get_irq(pdev, i);
+		if (irq > 0)
+			free_irq(irq, ndev);
+	}
+	if (fep->reg_phy)
+		regulator_disable(fep->reg_phy);
 	clk_disable_unprepare(fep->clk_ptp);
 	if (fep->ptp_clock)
 		ptp_clock_unregister(fep->ptp_clock);
 	clk_disable_unprepare(fep->clk_enet_out);
 	clk_disable_unprepare(fep->clk_ahb);
 	clk_disable_unprepare(fep->clk_ipg);
-	for (i = 0; i < FEC_IRQ_NUM; i++) {
-		int irq = platform_get_irq(pdev, i);
-		if (irq > 0)
-			free_irq(irq, ndev);
-	}
 	free_netdev(ndev);
 
 	platform_set_drvdata(pdev, NULL);
@@ -2039,6 +2044,9 @@ fec_suspend(struct device *dev)
 	clk_disable_unprepare(fep->clk_ahb);
 	clk_disable_unprepare(fep->clk_ipg);
 
+	if (fep->reg_phy)
+		regulator_disable(fep->reg_phy);
+
 	return 0;
 }
 
@@ -2047,6 +2055,13 @@ fec_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct fec_enet_private *fep = netdev_priv(ndev);
+	int ret;
+
+	if (fep->reg_phy) {
+		ret = regulator_enable(fep->reg_phy);
+		if (ret)
+			return ret;
+	}
 
 	clk_prepare_enable(fep->clk_enet_out);
 	clk_prepare_enable(fep->clk_ahb);