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95 lines
2.0 KiB
95 lines
2.0 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2011 Google, Inc. |
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* |
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* Author: |
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* Colin Cross <[email protected]> |
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* |
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* Copyright (C) 2010,2013, NVIDIA Corporation |
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*/ |
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#include <linux/cpu_pm.h> |
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#include <linux/interrupt.h> |
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#include <linux/io.h> |
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#include <linux/irqchip/arm-gic.h> |
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#include <linux/irq.h> |
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#include <linux/kernel.h> |
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#include <linux/of_address.h> |
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#include <linux/of.h> |
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#include <linux/syscore_ops.h> |
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#include <soc/tegra/irq.h> |
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#include "board.h" |
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#include "iomap.h" |
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#define SGI_MASK 0xFFFF |
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#ifdef CONFIG_PM_SLEEP |
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static void __iomem *tegra_gic_cpu_base; |
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#endif |
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bool tegra_pending_sgi(void) |
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{ |
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u32 pending_set; |
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void __iomem *distbase = IO_ADDRESS(TEGRA_ARM_INT_DIST_BASE); |
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pending_set = readl_relaxed(distbase + GIC_DIST_PENDING_SET); |
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if (pending_set & SGI_MASK) |
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return true; |
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return false; |
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} |
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#ifdef CONFIG_PM_SLEEP |
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static int tegra_gic_notifier(struct notifier_block *self, |
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unsigned long cmd, void *v) |
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{ |
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switch (cmd) { |
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case CPU_PM_ENTER: |
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writel_relaxed(0x1E0, tegra_gic_cpu_base + GIC_CPU_CTRL); |
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break; |
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} |
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return NOTIFY_OK; |
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} |
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static struct notifier_block tegra_gic_notifier_block = { |
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.notifier_call = tegra_gic_notifier, |
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}; |
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static const struct of_device_id tegra114_dt_gic_match[] __initconst = { |
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{ .compatible = "arm,cortex-a15-gic" }, |
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{ } |
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}; |
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static void __init tegra114_gic_cpu_pm_registration(void) |
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{ |
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struct device_node *dn; |
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dn = of_find_matching_node(NULL, tegra114_dt_gic_match); |
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if (!dn) |
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return; |
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tegra_gic_cpu_base = of_iomap(dn, 1); |
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cpu_pm_register_notifier(&tegra_gic_notifier_block); |
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} |
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#else |
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static void __init tegra114_gic_cpu_pm_registration(void) { } |
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#endif |
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static const struct of_device_id tegra_ictlr_match[] __initconst = { |
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{ .compatible = "nvidia,tegra20-ictlr" }, |
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{ .compatible = "nvidia,tegra30-ictlr" }, |
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{ } |
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}; |
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void __init tegra_init_irq(void) |
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{ |
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if (WARN_ON(!of_find_matching_node(NULL, tegra_ictlr_match))) |
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pr_warn("Outdated DT detected, suspend/resume will NOT work\n"); |
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tegra114_gic_cpu_pm_registration(); |
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}
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