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gpio: amd-fch: Set proper output level for direction_output 

Current amd_fch_gpio_direction_output implementation ignores the value
argument, fix it so direction_output will set proper output level.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Enrico Weigelt <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Axel Lin 2019-03-06 22:02:55 +08:00 committed by Linus Walleij
parent deb63b0b81
commit f777cda393
1 changed files with 10 additions and 1 deletions
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11
drivers/gpio/gpio-amd-fch.c
View File

@ -65,9 +65,18 @@ static int amd_fch_gpio_direction_output(struct gpio_chip *gc,
unsigned long flags;
struct amd_fch_gpio_priv *priv = gpiochip_get_data(gc);
void __iomem *ptr = amd_fch_gpio_addr(priv, gpio);
u32 val;
spin_lock_irqsave(&priv->lock, flags);
writel_relaxed(readl_relaxed(ptr) | AMD_FCH_GPIO_FLAG_DIRECTION, ptr);
val = readl_relaxed(ptr);
if (value)
val |= AMD_FCH_GPIO_FLAG_WRITE;
else
val &= ~AMD_FCH_GPIO_FLAG_WRITE;
writel_relaxed(val | AMD_FCH_GPIO_FLAG_DIRECTION, ptr);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;