netdev - [PATCH net-next v1 1/1] nfc: st95hf: Switch to using gpiod API

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240318203923.183943-1-andriy.shevchenko@linux.intel.com>
Date: Mon, 18 Mar 2024 22:39:23 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH net-next v1 1/1] nfc: st95hf: Switch to using gpiod API

This updates the driver to gpiod API, and removes yet another use of
of_get_named_gpio().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/nfc/st95hf/core.c | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/nfc/st95hf/core.c b/drivers/nfc/st95hf/core.c
index ed704bb77226..067e0ec31d2d 100644
--- a/drivers/nfc/st95hf/core.c
+++ b/drivers/nfc/st95hf/core.c
@@ -7,14 +7,13 @@
  */
 
 #include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/nfc.h>
-#include <linux/of_gpio.h>
 #include <linux/of.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
@@ -196,7 +195,7 @@ struct st95_digital_cmd_complete_arg {
  *	for spi communication between st95hf and host.
  * @ddev: nfc digital device object.
  * @nfcdev: nfc device object.
- * @enable_gpio: gpio used to enable st95hf transceiver.
+ * @enable_gpiod: gpio used to enable st95hf transceiver.
  * @complete_cb_arg: structure to store various context information
  *	that is passed from nfc requesting thread to the threaded ISR.
  * @st95hf_supply: regulator "consumer" for NFC device.
@@ -219,7 +218,7 @@ struct st95hf_context {
 	struct st95hf_spi_context spicontext;
 	struct nfc_digital_dev *ddev;
 	struct nfc_dev *nfcdev;
-	unsigned int enable_gpio;
+	struct gpio_desc *enable_gpiod;
 	struct st95_digital_cmd_complete_arg complete_cb_arg;
 	struct regulator *st95hf_supply;
 	unsigned char sendrcv_trflag;
@@ -451,19 +450,19 @@ static int st95hf_select_protocol(struct st95hf_context *stcontext, int type)
 static void st95hf_send_st95enable_negativepulse(struct st95hf_context *st95con)
 {
 	/* First make irq_in pin high */
-	gpio_set_value(st95con->enable_gpio, HIGH);
+	gpiod_set_value(st95con->enable_gpiod, HIGH);
 
 	/* wait for 1 milisecond */
 	usleep_range(1000, 2000);
 
 	/* Make irq_in pin low */
-	gpio_set_value(st95con->enable_gpio, LOW);
+	gpiod_set_value(st95con->enable_gpiod, LOW);
 
 	/* wait for minimum interrupt pulse to make st95 active */
 	usleep_range(1000, 2000);
 
 	/* At end make it high */
-	gpio_set_value(st95con->enable_gpio, HIGH);
+	gpiod_set_value(st95con->enable_gpiod, HIGH);
 }
 
 /*
@@ -1063,6 +1062,7 @@ MODULE_DEVICE_TABLE(of, st95hf_spi_of_match);
 
 static int st95hf_probe(struct spi_device *nfc_spi_dev)
 {
+	struct device *dev = &nfc_spi_dev->dev;
 	int ret;
 
 	struct st95hf_context *st95context;
@@ -1108,19 +1108,14 @@ static int st95hf_probe(struct spi_device *nfc_spi_dev)
 	 */
 	dev_set_drvdata(&nfc_spi_dev->dev, spicontext);
 
-	st95context->enable_gpio =
-		of_get_named_gpio(nfc_spi_dev->dev.of_node,
-				  "enable-gpio",
-				  0);
-	if (!gpio_is_valid(st95context->enable_gpio)) {
+	st95context->enable_gpiod = devm_gpiod_get(dev, "enable", GPIOD_OUT_HIGH);
+	if (IS_ERR(st95context->enable_gpiod)) {
+		ret = PTR_ERR(st95context->enable_gpiod);
 		dev_err(&nfc_spi_dev->dev, "No valid enable gpio\n");
-		ret = st95context->enable_gpio;
 		goto err_disable_regulator;
 	}
 
-	ret = devm_gpio_request_one(&nfc_spi_dev->dev, st95context->enable_gpio,
-				    GPIOF_DIR_OUT | GPIOF_INIT_HIGH,
-				    "enable_gpio");
+	ret = gpiod_set_consumer_name(st95context->enable_gpiod, "enable_gpio");
 	if (ret)
 		goto err_disable_regulator;
 
-- 
2.43.0.rc1.1.gbec44491f096