v4.19.13 snapshot.
diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h
new file mode 100644
index 0000000..b43f37f
--- /dev/null
+++ b/include/soc/tegra/mc.h
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2014 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __SOC_TEGRA_MC_H__
+#define __SOC_TEGRA_MC_H__
+
+#include <linux/reset-controller.h>
+#include <linux/types.h>
+
+struct clk;
+struct device;
+struct page;
+
+struct tegra_smmu_enable {
+ unsigned int reg;
+ unsigned int bit;
+};
+
+struct tegra_mc_timing {
+ unsigned long rate;
+
+ u32 *emem_data;
+};
+
+/* latency allowance */
+struct tegra_mc_la {
+ unsigned int reg;
+ unsigned int shift;
+ unsigned int mask;
+ unsigned int def;
+};
+
+struct tegra_mc_client {
+ unsigned int id;
+ const char *name;
+ unsigned int swgroup;
+
+ unsigned int fifo_size;
+
+ struct tegra_smmu_enable smmu;
+ struct tegra_mc_la la;
+};
+
+struct tegra_smmu_swgroup {
+ const char *name;
+ unsigned int swgroup;
+ unsigned int reg;
+};
+
+struct tegra_smmu_group_soc {
+ const char *name;
+ const unsigned int *swgroups;
+ unsigned int num_swgroups;
+};
+
+struct tegra_smmu_soc {
+ const struct tegra_mc_client *clients;
+ unsigned int num_clients;
+
+ const struct tegra_smmu_swgroup *swgroups;
+ unsigned int num_swgroups;
+
+ const struct tegra_smmu_group_soc *groups;
+ unsigned int num_groups;
+
+ bool supports_round_robin_arbitration;
+ bool supports_request_limit;
+
+ unsigned int num_tlb_lines;
+ unsigned int num_asids;
+};
+
+struct tegra_mc;
+struct tegra_smmu;
+
+#ifdef CONFIG_TEGRA_IOMMU_SMMU
+struct tegra_smmu *tegra_smmu_probe(struct device *dev,
+ const struct tegra_smmu_soc *soc,
+ struct tegra_mc *mc);
+void tegra_smmu_remove(struct tegra_smmu *smmu);
+#else
+static inline struct tegra_smmu *
+tegra_smmu_probe(struct device *dev, const struct tegra_smmu_soc *soc,
+ struct tegra_mc *mc)
+{
+ return NULL;
+}
+
+static inline void tegra_smmu_remove(struct tegra_smmu *smmu)
+{
+}
+#endif
+
+struct tegra_mc_reset {
+ const char *name;
+ unsigned long id;
+ unsigned int control;
+ unsigned int status;
+ unsigned int reset;
+ unsigned int bit;
+};
+
+struct tegra_mc_reset_ops {
+ int (*hotreset_assert)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+ int (*hotreset_deassert)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+ int (*block_dma)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+ bool (*dma_idling)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+ int (*unblock_dma)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+ int (*reset_status)(struct tegra_mc *mc,
+ const struct tegra_mc_reset *rst);
+};
+
+struct tegra_mc_soc {
+ const struct tegra_mc_client *clients;
+ unsigned int num_clients;
+
+ const unsigned long *emem_regs;
+ unsigned int num_emem_regs;
+
+ unsigned int num_address_bits;
+ unsigned int atom_size;
+
+ u8 client_id_mask;
+
+ const struct tegra_smmu_soc *smmu;
+
+ u32 intmask;
+
+ const struct tegra_mc_reset_ops *reset_ops;
+ const struct tegra_mc_reset *resets;
+ unsigned int num_resets;
+};
+
+struct tegra_mc {
+ struct device *dev;
+ struct tegra_smmu *smmu;
+ void __iomem *regs, *regs2;
+ struct clk *clk;
+ int irq;
+
+ const struct tegra_mc_soc *soc;
+ unsigned long tick;
+
+ struct tegra_mc_timing *timings;
+ unsigned int num_timings;
+
+ struct reset_controller_dev reset;
+
+ spinlock_t lock;
+};
+
+void tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate);
+unsigned int tegra_mc_get_emem_device_count(struct tegra_mc *mc);
+
+#endif /* __SOC_TEGRA_MC_H__ */