From 25a0afd115990f5e379cb6e059cd3820a0ce105f Mon Sep 17 00:00:00 2001 From: Maulik Shah Date: Fri, 13 Sep 2019 15:59:17 -0600 Subject: [PATCH] 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: Maulik Shah [updated commit text] Signed-off-by: Lina Iyer BUG: 141169320 TEST: Build and boot Change-Id: Ie0042161727f2c8b1ebe0dd2165cbc4f20612f30 Signed-off-by: Maulik Shah Link: https://patchwork.kernel.org/patch/11145349 --- drivers/irqchip/qcom-pdc.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/irqchip/qcom-pdc.c b/drivers/irqchip/qcom-pdc.c index affb0bfa1701..2b49e704178d 100644 --- a/drivers/irqchip/qcom-pdc.c +++ b/drivers/irqchip/qcom-pdc.c @@ -5,6 +5,7 @@ #include #include +#include #include #include #include @@ -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 |