netdev - [PATCH 2/2] ieee802154: at86rf230: switch to using gpiod API

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Message-Id: <20230201053447.4098486-2-dmitry.torokhov@gmail.com>
Date:   Tue, 31 Jan 2023 21:34:47 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
        linux-wpan@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 2/2] ieee802154: at86rf230: switch to using gpiod API

Switch the driver from legacy gpio API that is deprecated to the newer
gpiod API that respects line polarities described in ACPI/DT.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---
 drivers/net/ieee802154/at86rf230.c | 52 +++++++++++++++---------------
 1 file changed, 26 insertions(+), 26 deletions(-)

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index d6b6b355348b..62b984f84d9f 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -82,7 +82,7 @@ struct at86rf230_local {
 	struct ieee802154_hw *hw;
 	struct at86rf2xx_chip_data *data;
 	struct regmap *regmap;
-	int slp_tr;
+	struct gpio_desc *slp_tr;
 	bool sleep;
 
 	struct completion state_complete;
@@ -107,8 +107,8 @@ at86rf230_async_state_change(struct at86rf230_local *lp,
 static inline void
 at86rf230_sleep(struct at86rf230_local *lp)
 {
-	if (gpio_is_valid(lp->slp_tr)) {
-		gpio_set_value(lp->slp_tr, 1);
+	if (lp->slp_tr) {
+		gpiod_set_value(lp->slp_tr, 1);
 		usleep_range(lp->data->t_off_to_sleep,
 			     lp->data->t_off_to_sleep + 10);
 		lp->sleep = true;
@@ -118,8 +118,8 @@ at86rf230_sleep(struct at86rf230_local *lp)
 static inline void
 at86rf230_awake(struct at86rf230_local *lp)
 {
-	if (gpio_is_valid(lp->slp_tr)) {
-		gpio_set_value(lp->slp_tr, 0);
+	if (lp->slp_tr) {
+		gpiod_set_value(lp->slp_tr, 0);
 		usleep_range(lp->data->t_sleep_to_off,
 			     lp->data->t_sleep_to_off + 100);
 		lp->sleep = false;
@@ -204,9 +204,9 @@ at86rf230_write_subreg(struct at86rf230_local *lp,
 static inline void
 at86rf230_slp_tr_rising_edge(struct at86rf230_local *lp)
 {
-	gpio_set_value(lp->slp_tr, 1);
+	gpiod_set_value(lp->slp_tr, 1);
 	udelay(1);
-	gpio_set_value(lp->slp_tr, 0);
+	gpiod_set_value(lp->slp_tr, 0);
 }
 
 static bool
@@ -819,7 +819,7 @@ at86rf230_write_frame_complete(void *context)
 
 	ctx->trx.len = 2;
 
-	if (gpio_is_valid(lp->slp_tr))
+	if (lp->slp_tr)
 		at86rf230_slp_tr_rising_edge(lp);
 	else
 		at86rf230_async_write_reg(lp, RG_TRX_STATE, STATE_BUSY_TX, ctx,
@@ -1520,8 +1520,10 @@ static int at86rf230_probe(struct spi_device *spi)
 {
 	struct ieee802154_hw *hw;
 	struct at86rf230_local *lp;
+	struct gpio_desc *slp_tr;
+	struct gpio_desc *rstn;
 	unsigned int status;
-	int rc, irq_type, rstn, slp_tr;
+	int rc, irq_type;
 	u8 xtal_trim;
 
 	if (!spi->irq) {
@@ -1539,28 +1541,26 @@ static int at86rf230_probe(struct spi_device *spi)
 		xtal_trim = 0;
 	}
 
-	rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);
-	if (gpio_is_valid(rstn)) {
-		rc = devm_gpio_request_one(&spi->dev, rstn,
-					   GPIOF_OUT_INIT_HIGH, "rstn");
-		if (rc)
-			return rc;
-	}
+	rstn = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);
+	rc = PTR_ERR_OR_ZERO(rstn);
+	if (rc)
+		return rc;
 
-	slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);
-	if (gpio_is_valid(slp_tr)) {
-		rc = devm_gpio_request_one(&spi->dev, slp_tr,
-					   GPIOF_OUT_INIT_LOW, "slp_tr");
-		if (rc)
-			return rc;
-	}
+	gpiod_set_consumer_name(rstn, "rstn");
+
+	slp_tr = devm_gpiod_get_optional(&spi->dev, "sleep", GPIOD_OUT_LOW);
+	rc = PTR_ERR_OR_ZERO(slp_tr);
+	if (rc)
+		return rc;
+
+	gpiod_set_consumer_name(slp_tr, "slp_tr");
 
 	/* Reset */
-	if (gpio_is_valid(rstn)) {
+	if (rstn) {
 		udelay(1);
-		gpio_set_value_cansleep(rstn, 0);
+		gpiod_set_value_cansleep(rstn, 1);
 		udelay(1);
-		gpio_set_value_cansleep(rstn, 1);
+		gpiod_set_value_cansleep(rstn, 0);
 		usleep_range(120, 240);
 	}
 
-- 
2.39.1.456.gfc5497dd1b-goog