From 67c413154eac8161d482349281764a3abcdf7bf5 Mon Sep 17 00:00:00 2001 From: Lina Iyer Date: Tue, 18 Dec 2018 11:23:53 -0700 Subject: [PATCH] irqchip: qcom-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. Change-Id: Ibd551f84d8f6ae15b8d9702faeb585a69f283f6e Signed-off-by: Maulik Shah Signed-off-by: Lina Iyer --- drivers/irqchip/qcom-pdc.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c index d7346d7f0472..750bc455bd3c 100644 --- a/drivers/irqchip/qcom-pdc.c +++ b/drivers/irqchip/qcom-pdc.c @@ -5,6 +5,7 @@ #include #include +#include #include #include #include @@ -50,6 +51,26 @@ static u32 pdc_reg_read(int reg, u32 i) return readl_relaxed(pdc_base + reg + i * sizeof(u32)); } +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 pdc_enable_intr(struct irq_data *d, bool on) { int pin_out = d->hwirq; @@ -178,6 +199,8 @@ 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 |