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Commit 499c7196 authored by Agrawal, Nitesh-kumar's avatar Agrawal, Nitesh-kumar Committed by Linus Walleij
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pinctrl/amd: Configure GPIO register using BIOS settings 



In the function amd_gpio_irq_set_type, use the settings provided by
the BIOS,when the LevelTrig is Edge and activeLevel is HIGH, to configure
the GPIO registers. Ignore the settings from client.

Reviewed-by: default avatarPankaj Sen <Pankaj.Sen@amd.com>
Signed-off-by: default avatarNitesh Kumar Agrawal <Nitesh-kumar.Agrawal@amd.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent ac91ab51

drivers/pinctrl/pinctrl-amd.c

+15 −0
Original line number Diff line number Diff line
@@ -403,12 +403,27 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type) 
	int ret = 0;

	u32 pin_reg;

	unsigned long flags;

	u32 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);