Merge tag 'regmap-fix-v4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / pinctrl / pinctrl-amd.c

diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
index b3e7723..aea310a 100644 (file)
--- a/drivers/pinctrl/pinctrl-amd.c
+++ b/drivers/pinctrl/pinctrl-amd.c
@@ -383,12 +383,26 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
        int ret = 0;
        u32 pin_reg;
        unsigned long flags;
+       bool level_trig;
+       u32 active_level;
        struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
        struct amd_gpio *gpio_dev = gpiochip_get_data(gc);
 
        spin_lock_irqsave(&gpio_dev->lock, flags);
        pin_reg = readl(gpio_dev->base + (d->hwirq)*4);
 
+       /*
+        * When level_trig is set EDGE and active_level is set HIGH in BIOS
+        * default settings, ignore incoming settings from client and use
+        * BIOS settings to configure GPIO register.
+        */
+       level_trig = !(pin_reg & (LEVEL_TRIGGER << LEVEL_TRIG_OFF));
+       active_level = pin_reg & (ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
+
+       if(level_trig &&
+          ((active_level >> ACTIVE_LEVEL_OFF) == ACTIVE_HIGH))
+               type = IRQ_TYPE_EDGE_FALLING;
+
        switch (type & IRQ_TYPE_SENSE_MASK) {
        case IRQ_TYPE_EDGE_RISING:
                pin_reg &= ~BIT(LEVEL_TRIG_OFF);