pinctrl: armada-37xx: Fix direction_output() callback behavior

The direction_output callback of the gpio_chip structure is supposed to
set the output direction but also to set the value of the gpio. For the
armada-37xx driver this callback acted as the gpio_set_direction callback
for the pinctrl.

This patch fixes the behavior of the direction_output callback by also
applying the value received as parameter.

Cc: stable@vger.kernel.org
Fixes: 5715092a458c ("pinctrl: armada-37xx: Add gpio support")
Reported-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
index d45af31b86b41ef6c85591a040fe2dd46c60de3e..bdb8d174efefb7ee897c60bab250a126a53af729 100644 (file)
--- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
@@ -408,12 +408,21 @@ static int armada_37xx_gpio_direction_output(struct gpio_chip *chip,
 {
        struct armada_37xx_pinctrl *info = gpiochip_get_data(chip);
        unsigned int reg = OUTPUT_EN;
-       unsigned int mask;
+       unsigned int mask, val, ret;
 
        armada_37xx_update_reg(&reg, offset);
        mask = BIT(offset);
 
-       return regmap_update_bits(info->regmap, reg, mask, mask);
+       ret = regmap_update_bits(info->regmap, reg, mask, mask);
+
+       if (ret)
+               return ret;
+
+       reg = OUTPUT_VAL;
+       val = value ? mask : 0;
+       regmap_update_bits(info->regmap, reg, mask, val);
+
+       return 0;
 }
 
 static int armada_37xx_gpio_get(struct gpio_chip *chip, unsigned int offset)