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45 lines
999 B
45 lines
999 B
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (C) 2019 Paul Cercueil <[email protected]> |
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*/ |
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#include "cgu.h" |
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#include "pm.h" |
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#include <linux/io.h> |
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#include <linux/syscore_ops.h> |
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#define CGU_REG_LCR 0x04 |
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#define LCR_LOW_POWER_MODE BIT(0) |
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static void __iomem * __maybe_unused ingenic_cgu_base; |
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static int __maybe_unused ingenic_cgu_pm_suspend(void) |
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{ |
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u32 val = readl(ingenic_cgu_base + CGU_REG_LCR); |
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writel(val | LCR_LOW_POWER_MODE, ingenic_cgu_base + CGU_REG_LCR); |
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return 0; |
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} |
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static void __maybe_unused ingenic_cgu_pm_resume(void) |
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{ |
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u32 val = readl(ingenic_cgu_base + CGU_REG_LCR); |
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writel(val & ~LCR_LOW_POWER_MODE, ingenic_cgu_base + CGU_REG_LCR); |
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} |
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static struct syscore_ops __maybe_unused ingenic_cgu_pm_ops = { |
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.suspend = ingenic_cgu_pm_suspend, |
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.resume = ingenic_cgu_pm_resume, |
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}; |
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void ingenic_cgu_register_syscore_ops(struct ingenic_cgu *cgu) |
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{ |
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if (IS_ENABLED(CONFIG_PM_SLEEP)) { |
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ingenic_cgu_base = cgu->base; |
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register_syscore_ops(&ingenic_cgu_pm_ops); |
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} |
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}
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