Merge "drivers: GICv3: Enable logging of interrupts that triggered wakeup" (d664828b) · Commits · e / devices / android_kernel_xiaomi_sm6125

drivers/irqchip/irq-gic-common.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -30,6 +30,12 @@ struct gic_quirk {
		extern bool from_suspend;
		extern struct irq_chip gic_arch_extn;

		#ifdef CONFIG_QCOM_SHOW_RESUME_IRQ
		extern int msm_show_resume_irq_mask;
		#else
		#define msm_show_resume_irq_mask 0
		#endif

		int gic_configure_irq(unsigned int irq, unsigned int type,
		void __iomem base, void (sync_access)(void));
		void gic_dist_config(void __iomem *base, int gic_irqs,

drivers/irqchip/irq-gic-v3.c

+65 −0

Original line number	Diff line number	Diff line
		@@ -40,6 +40,8 @@
		#include <asm/smp_plat.h>
		#include <asm/virt.h>

		#include <linux/syscore_ops.h>

		#include "irq-gic-common.h"

		struct redist_region {
		@@ -331,6 +333,69 @@ static int gic_irq_set_vcpu_affinity(struct irq_data d, void vcpu)
		return 0;
		}

		#ifdef CONFIG_PM

		static int gic_suspend(void)
		{
		return 0;
		}

		static void gic_show_resume_irq(struct gic_chip_data *gic)
		{
		unsigned int i;
		u32 enabled;
		u32 pending[32];
		void __iomem *base = gic_data.dist_base;

		if (!msm_show_resume_irq_mask)
		return;

		for (i = 0; i * 32 < gic->irq_nr; i++) {
		enabled = readl_relaxed(base + GICD_ICENABLER + i * 4);
		pending[i] = readl_relaxed(base + GICD_ISPENDR + i * 4);
		pending[i] &= enabled;
		}

		for (i = find_first_bit((unsigned long *)pending, gic->irq_nr);
		i < gic->irq_nr;
		i = find_next_bit((unsigned long *)pending, gic->irq_nr, i+1)) {
		unsigned int irq = irq_find_mapping(gic->domain, i);
		struct irq_desc *desc = irq_to_desc(irq);
		const char *name = "null";

		if (desc == NULL)
		name = "stray irq";
		else if (desc->action && desc->action->name)
		name = desc->action->name;

		pr_warn("%s: %d triggered %s\n", __func__, irq, name);
		}
		}

		static void gic_resume_one(struct gic_chip_data *gic)
		{
		gic_show_resume_irq(gic);
		}

		static void gic_resume(void)
		{
		gic_resume_one(&gic_data);
		}

		static struct syscore_ops gic_syscore_ops = {
		.suspend = gic_suspend,
		.resume = gic_resume,
		};

		static int __init gic_init_sys(void)
		{
		register_syscore_ops(&gic_syscore_ops);
		return 0;
		}
		arch_initcall(gic_init_sys);

		#endif

		static u64 gic_mpidr_to_affinity(unsigned long mpidr)
		{
		u64 aff;