netdev - [PATCH] [v2] fec: convert to gpio descriptor

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Date:   Thu, 26 Jan 2023 22:05:59 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Wei Fang <wei.fang@....com>, Jakub Kicinski <kuba@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Shenwei Wang <shenwei.wang@....com>,
        Clark Wang <xiaoning.wang@....com>,
        NXP Linux Team <linux-imx@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [v2] fec: convert to gpio descriptor

From: Arnd Bergmann <arnd@...db.de>

The driver can be trivially converted, as it only triggers the gpio
pin briefly to do a reset, and it already only supports DT.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
v2 changes, suggested by Andrew Lunn:
 - reorder header inclusions,
 - use dev_err_probe()
---
 drivers/net/ethernet/freescale/fec_main.c | 25 ++++++++---------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 5ff45b1a74a5..2716898e0b9b 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -56,12 +56,12 @@
 #include <linux/fec.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/regulator/consumer.h>
 #include <linux/if_vlan.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/gpio/consumer.h>
 #include <linux/prefetch.h>
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
@@ -4035,10 +4035,11 @@ static int fec_enet_init(struct net_device *ndev)
 #ifdef CONFIG_OF
 static int fec_reset_phy(struct platform_device *pdev)
 {
-	int err, phy_reset;
+	struct gpio_desc *phy_reset;
 	bool active_high = false;
 	int msec = 1, phy_post_delay = 0;
 	struct device_node *np = pdev->dev.of_node;
+	int err;
 
 	if (!np)
 		return 0;
@@ -4048,12 +4049,6 @@ static int fec_reset_phy(struct platform_device *pdev)
 	if (!err && msec > 1000)
 		msec = 1;
 
-	phy_reset = of_get_named_gpio(np, "phy-reset-gpios", 0);
-	if (phy_reset == -EPROBE_DEFER)
-		return phy_reset;
-	else if (!gpio_is_valid(phy_reset))
-		return 0;
-
 	err = of_property_read_u32(np, "phy-reset-post-delay", &phy_post_delay);
 	/* valid reset duration should be less than 1s */
 	if (!err && phy_post_delay > 1000)
@@ -4061,20 +4056,18 @@ static int fec_reset_phy(struct platform_device *pdev)
 
 	active_high = of_property_read_bool(np, "phy-reset-active-high");
 
-	err = devm_gpio_request_one(&pdev->dev, phy_reset,
-			active_high ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW,
-			"phy-reset");
-	if (err) {
-		dev_err(&pdev->dev, "failed to get phy-reset-gpios: %d\n", err);
-		return err;
-	}
+	phy_reset = devm_gpiod_get(&pdev->dev, "phy-reset",
+			active_high ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW);
+	if (IS_ERR(phy_reset))
+		return dev_err_probe(&pdev->dev, PTR_ERR(phy_reset),
+				     "failed to get phy-reset-gpios\n");
 
 	if (msec > 20)
 		msleep(msec);
 	else
 		usleep_range(msec * 1000, msec * 1000 + 1000);
 
-	gpio_set_value_cansleep(phy_reset, !active_high);
+	gpiod_set_value_cansleep(phy_reset, !active_high);
 
 	if (!phy_post_delay)
 		return 0;
-- 
2.39.0