[PATCH v3 11/14] gpio: regmap: Use regmap_test_bits() for single bit reads

[Janani Sunil <janani.sunil@analog.com>]

Use regmap_test_bits() when reading a single GPIO value from a normal
register and when reading the direction bit.

Signed-off-by: Janani Sunil <janani.sunil@analog.com>
---
 drivers/gpio/gpio-regmap.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

diff --git a/drivers/gpio/gpio-regmap.c b/drivers/gpio/gpio-regmap.c
index 51b4d69b8740..a5188f8569e3 100644
--- a/drivers/gpio/gpio-regmap.c
+++ b/drivers/gpio/gpio-regmap.c
@@ -84,14 +84,15 @@ static int gpio_regmap_get(struct gpio_chip *chip, unsigned int offset)
 		return ret;
 
 	/* ensure we don't spoil any register cache with pin input values */
-	if (gpio->reg_dat_base == gpio->reg_set_base)
+	if (gpio->reg_dat_base == gpio->reg_set_base) {
 		ret = regmap_read_bypassed(gpio->regmap, reg, &val);
-	else
-		ret = regmap_read(gpio->regmap, reg, &val);
-	if (ret)
-		return ret;
+		if (ret)
+			return ret;
 
-	return !!(val & mask);
+		return !!(val & mask);
+	}
+
+	return regmap_test_bits(gpio->regmap, reg, mask);
 }
 
 static int gpio_regmap_set(struct gpio_chip *chip, unsigned int offset,
@@ -157,7 +158,7 @@ static int gpio_regmap_get_direction(struct gpio_chip *chip,
 				     unsigned int offset)
 {
 	struct gpio_regmap *gpio = gpiochip_get_data(chip);
-	unsigned int base, val, reg, mask;
+	unsigned int base, reg, mask;
 	int invert, ret;
 
 	if (gpio_regmap_fixed_direction(gpio, offset)) {
@@ -186,11 +187,11 @@ static int gpio_regmap_get_direction(struct gpio_chip *chip,
 	if (ret)
 		return ret;
 
-	ret = regmap_read(gpio->regmap, reg, &val);
-	if (ret)
+	ret = regmap_test_bits(gpio->regmap, reg, mask);
+	if (ret < 0)
 		return ret;
 
-	if (!!(val & mask) ^ invert)
+	if (ret ^ invert)
 		return GPIO_LINE_DIRECTION_OUT;
 	else
 		return GPIO_LINE_DIRECTION_IN;

-- 
2.43.0