diff options
| author |   Gregory CLEMENT <gregory.clement@free-electrons.com> | 2017-11-14 17:51:50 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2017-11-29 14:09:23 +0100 |
| commit | 6702abb3bf2394f250af0ee04070227bb5dda788 (patch) | |
| tree | 7f1a0ac42f4d849fc086eed04c20bcbf74f25397 /drivers/pinctrl | |
| parent | pinctrl: denverton: Fix UART2 RTS pin mode (diff) | |
| download | linux-dev-6702abb3bf2394f250af0ee04070227bb5dda788.tar.xz linux-dev-6702abb3bf2394f250af0ee04070227bb5dda788.zip | |
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>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c index d45af31b86b4..bdb8d174efef 100644 --- 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(®, 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) |