1 files changed, 18 insertions, 25 deletions

diff --git a/drivers/pinctrl/vt8500/pinctrl-wmt.c b/drivers/pinctrl/vt8500/pinctrl-wmt.c
index ccdf68e766b8..7213a8d4bf09 100644
--- a/drivers/pinctrl/vt8500/pinctrl-wmt.c
+++ b/drivers/pinctrl/vt8500/pinctrl-wmt.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Pinctrl driver for the Wondermedia SoC's
  *
  * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 
 #include <linux/err.h>
@@ -494,8 +486,10 @@ static int wmt_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 	u32 val;
 
 	val = readl_relaxed(data->base + reg_dir);
-	/* Return 0 == output, 1 == input */
-	return !(val & BIT(bit));
+	if (val & BIT(bit))
+		return GPIO_LINE_DIRECTION_OUT;
+
+	return GPIO_LINE_DIRECTION_IN;
 }
 
 static int wmt_gpio_get_value(struct gpio_chip *chip, unsigned offset)
@@ -513,8 +507,8 @@ static int wmt_gpio_get_value(struct gpio_chip *chip, unsigned offset)
 	return !!(readl_relaxed(data->base + reg_data_in) & BIT(bit));
 }
 
-static void wmt_gpio_set_value(struct gpio_chip *chip, unsigned offset,
-			       int val)
+static int wmt_gpio_set_value(struct gpio_chip *chip, unsigned int offset,
+			      int val)
 {
 	struct wmt_pinctrl_data *data = gpiochip_get_data(chip);
 	u32 bank = WMT_BANK_FROM_PIN(offset);
@@ -523,25 +517,27 @@ static void wmt_gpio_set_value(struct gpio_chip *chip, unsigned offset,
 
 	if (reg_data_out == NO_REG) {
 		dev_err(data->dev, "no data out register defined\n");
-		return;
+		return -EINVAL;
 	}
 
 	if (val)
 		wmt_setbits(data, reg_data_out, BIT(bit));
 	else
 		wmt_clearbits(data, reg_data_out, BIT(bit));
-}
 
-static int wmt_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-{
-	return pinctrl_gpio_direction_input(chip->base + offset);
+	return 0;
 }
 
 static int wmt_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
 				     int value)
 {
-	wmt_gpio_set_value(chip, offset, value);
-	return pinctrl_gpio_direction_output(chip->base + offset);
+	int ret;
+
+	ret = wmt_gpio_set_value(chip, offset, value);
+	if (ret)
+		return ret;
+
+	return pinctrl_gpio_direction_output(chip, offset);
 }
 
 static const struct gpio_chip wmt_gpio_chip = {
@@ -550,7 +546,7 @@ static const struct gpio_chip wmt_gpio_chip = {
 	.request = gpiochip_generic_request,
 	.free = gpiochip_generic_free,
 	.get_direction = wmt_gpio_get_direction,
-	.direction_input = wmt_gpio_direction_input,
+	.direction_input = pinctrl_gpio_direction_input,
 	.direction_output = wmt_gpio_direction_output,
 	.get = wmt_gpio_get_value,
 	.set = wmt_gpio_set_value,
@@ -561,10 +557,8 @@ int wmt_pinctrl_probe(struct platform_device *pdev,
 		      struct wmt_pinctrl_data *data)
 {
 	int err;
-	struct resource *res;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	data->base = devm_ioremap_resource(&pdev->dev, res);
+	data->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(data->base))
 		return PTR_ERR(data->base);
 
@@ -573,7 +567,6 @@ int wmt_pinctrl_probe(struct platform_device *pdev,
 
 	data->gpio_chip = wmt_gpio_chip;
 	data->gpio_chip.parent = &pdev->dev;
-	data->gpio_chip.of_node = pdev->dev.of_node;
 	data->gpio_chip.ngpio = data->nbanks * 32;
 
 	platform_set_drvdata(pdev, data);