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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/include/soc/tegra/mc.h
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@@ -1,14 +1,12 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2014 NVIDIA Corporation
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #ifndef __SOC_TEGRA_MC_H__
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 #define __SOC_TEGRA_MC_H__
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+#include <linux/err.h>
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 #include <linux/reset-controller.h>
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 #include <linux/types.h>
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@@ -77,6 +75,7 @@
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 struct tegra_mc;
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 struct tegra_smmu;
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+struct gart_device;
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 #ifdef CONFIG_TEGRA_IOMMU_SMMU
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 struct tegra_smmu *tegra_smmu_probe(struct device *dev,
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@@ -93,6 +92,28 @@
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 static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
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 {
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+}
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+#endif
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+
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+#ifdef CONFIG_TEGRA_IOMMU_GART
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+struct gart_device *tegra_gart_probe(struct device *dev, struct tegra_mc *mc);
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+int tegra_gart_suspend(struct gart_device *gart);
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+int tegra_gart_resume(struct gart_device *gart);
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+#else
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+static inline struct gart_device *
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+tegra_gart_probe(struct device *dev, struct tegra_mc *mc)
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+{
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+	return ERR_PTR(-ENODEV);
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+}
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+
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+static inline int tegra_gart_suspend(struct gart_device *gart)
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+{
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+	return -ENODEV;
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+}
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+
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+static inline int tegra_gart_resume(struct gart_device *gart)
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+{
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+	return -ENODEV;
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 }
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 #endif
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@@ -144,7 +165,8 @@
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 struct tegra_mc {
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 	struct device *dev;
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 	struct tegra_smmu *smmu;
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-	void __iomem *regs, *regs2;
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+	struct gart_device *gart;
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+	void __iomem *regs;
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 	struct clk *clk;
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 	int irq;
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@@ -159,7 +181,7 @@
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 	spinlock_t lock;
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 };
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-void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
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+int tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
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 unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
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 #endif /* __SOC_TEGRA_MC_H__ */