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Commit 25a0afd1 authored by Maulik Shah's avatar Maulik Shah Committed by Todd Kjos
Browse files

FROMLIST: drivers: irqchip: pdc: Add irqchip set/get state calls 



Add irqchip calls to set/get interrupt state from the parent interrupt
controller. When GPIOs are renabled as interrupt lines, it is desirable
to clear the interrupt state at the GIC. This avoids any unwanted
interrupt as a result of stale pending state recorded when the line was
used as a GPIO.

Signed-off-by: default avatarMaulik Shah <mkshah@codeaurora.org>
[updated commit text]
Signed-off-by: default avatarLina Iyer <ilina@codeaurora.org>

BUG: 141169320
TEST: Build and boot

Change-Id: Ie0042161727f2c8b1ebe0dd2165cbc4f20612f30
Signed-off-by: default avatarMaulik Shah <mkshah@codeaurora.org>
Link: https://patchwork.kernel.org/patch/11145349
parent 2d494074

drivers/irqchip/qcom-pdc.c

+21 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 


#include <linux/err.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/irqchip.h>

#include <linux/irqdomain.h>
@@ -87,6 +88,24 @@ static void qcom_pdc_gic_disable(struct irq_data *d) 
	irq_chip_disable_parent(d);

}



static int qcom_pdc_gic_get_irqchip_state(struct irq_data *d,

		enum irqchip_irq_state which, bool *state)

{

	if (d->hwirq == GPIO_NO_WAKE_IRQ)

		return 0;



	return irq_chip_get_parent_state(d, which, state);

}



static int qcom_pdc_gic_set_irqchip_state(struct irq_data *d,

		enum irqchip_irq_state which, bool value)

{

	if (d->hwirq == GPIO_NO_WAKE_IRQ)

		return 0;



	return irq_chip_set_parent_state(d, which, value);

}



static void qcom_pdc_gic_enable(struct irq_data *d)

{

	if (d->hwirq == GPIO_NO_WAKE_IRQ)
@@ -248,6 +267,8 @@ static struct irq_chip qcom_pdc_gic_chip = { 
	.irq_unmask		= qcom_pdc_gic_unmask,

	.irq_disable		= qcom_pdc_gic_disable,

	.irq_enable		= qcom_pdc_gic_enable,

	.irq_get_irqchip_state	= qcom_pdc_gic_get_irqchip_state,

	.irq_set_irqchip_state	= qcom_pdc_gic_set_irqchip_state,

	.irq_retrigger		= irq_chip_retrigger_hierarchy,

	.irq_set_type		= qcom_pdc_gic_set_type,

	.flags			= IRQCHIP_MASK_ON_SUSPEND |