diff options
Diffstat (limited to 'arch/arm/mach-tegra')
| -rw-r--r-- | arch/arm/mach-tegra/irq.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/irq.c b/arch/arm/mach-tegra/irq.c index 0de4eed1493d..1a74d562dca1 100644 --- a/arch/arm/mach-tegra/irq.c +++ b/arch/arm/mach-tegra/irq.c @@ -18,10 +18,12 @@ */ #include <linux/kernel.h> +#include <linux/cpu_pm.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> #include <linux/of.h> +#include <linux/of_address.h> #include <linux/irqchip/arm-gic.h> #include <linux/syscore_ops.h> @@ -65,6 +67,7 @@ static u32 cpu_ier[TEGRA_MAX_NUM_ICTLRS]; static u32 cpu_iep[TEGRA_MAX_NUM_ICTLRS]; static u32 ictlr_wake_mask[TEGRA_MAX_NUM_ICTLRS]; +static void __iomem *tegra_gic_cpu_base; #endif bool tegra_pending_sgi(void) @@ -213,8 +216,43 @@ int tegra_legacy_irq_syscore_init(void) return 0; } + +static int tegra_gic_notifier(struct notifier_block *self, + unsigned long cmd, void *v) +{ + switch (cmd) { + case CPU_PM_ENTER: + writel_relaxed(0x1E0, tegra_gic_cpu_base + GIC_CPU_CTRL); + break; + } + + return NOTIFY_OK; +} + +static struct notifier_block tegra_gic_notifier_block = { + .notifier_call = tegra_gic_notifier, +}; + +static const struct of_device_id tegra114_dt_gic_match[] __initconst = { + { .compatible = "arm,cortex-a15-gic" }, + { } +}; + +static void tegra114_gic_cpu_pm_registration(void) +{ + struct device_node *dn; + + dn = of_find_matching_node(NULL, tegra114_dt_gic_match); + if (!dn) + return; + + tegra_gic_cpu_base = of_iomap(dn, 1); + + cpu_pm_register_notifier(&tegra_gic_notifier_block); +} #else #define tegra_set_wake NULL +static void tegra114_gic_cpu_pm_registration(void) { } #endif void __init tegra_init_irq(void) @@ -252,4 +290,6 @@ void __init tegra_init_irq(void) if (!of_have_populated_dt()) gic_init(0, 29, distbase, IO_ADDRESS(TEGRA_ARM_PERIF_BASE + 0x100)); + + tegra114_gic_cpu_pm_registration(); } |