From: Daniel Krueger <[email protected]> This ensures that the output signal does not toggle if set to high.
Signed-off-by: Daniel Krueger <[email protected]> Signed-off-by: Alexander Stein <[email protected]> --- drivers/gpio/gpio-pch.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index 9656c19..83a1563 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -138,9 +138,6 @@ static int pch_gpio_direction_output(struct gpio_chip *gpio, unsigned nr, unsigned long flags; spin_lock_irqsave(&chip->spinlock, flags); - pm = ioread32(&chip->reg->pm) & ((1 << gpio_pins[chip->ioh]) - 1); - pm |= (1 << nr); - iowrite32(pm, &chip->reg->pm); reg_val = ioread32(&chip->reg->po); if (val) @@ -148,6 +145,11 @@ static int pch_gpio_direction_output(struct gpio_chip *gpio, unsigned nr, else reg_val &= ~(1 << nr); iowrite32(reg_val, &chip->reg->po); + + pm = ioread32(&chip->reg->pm) & ((1 << gpio_pins[chip->ioh]) - 1); + pm |= (1 << nr); + iowrite32(pm, &chip->reg->pm); + spin_unlock_irqrestore(&chip->spinlock, flags); return 0; -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
