1 files changed, 77 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_rail.h b/drivers/gpu/nvgpu/volt/volt_rail.h
new file mode 100644
index 00000000..0180992c
--- /dev/null
+++ b/drivers/gpu/nvgpu/volt/volt_rail.h
@@ -0,0 +1,77 @@
+/*
+* Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+*
+* This program is free software; you can redistribute it and/or modify it
+* under the terms and conditions of the GNU General Public License,
+* version 2, as published by the Free Software Foundation.
+*
+* This program is distributed in the hope it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+* more details.
+*/
+
+
+#ifndef _VOLT_RAIL_H_
+#define _VOLT_RAIL_H_
+
+#include "boardobj/boardobj.h"
+#include "boardobj/boardobjgrp.h"
+
+#define CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES   0x04
+#define CTRL_PMGR_PWR_EQUATION_INDEX_INVALID    0xFF
+
+#define VOLT_GET_VOLT_RAIL(pvolt, rail_idx)     \
+        ((struct voltage_rail *)BOARDOBJGRP_OBJ_GET_BY_IDX( \
+                &((pvolt)->volt_rail_metadata.volt_rails.super), (rail_idx)))
+
+#define VOLT_RAIL_INDEX_IS_VALID(pvolt, rail_idx)       \
+        (boardobjgrp_idxisvalid( \
+                &((pvolt)->volt_rail_metadata.volt_rails.super), (rail_idx)))
+
+#define VOLT_RAIL_VOLT_3X_SUPPORTED(pvolt) \
+        (!BOARDOBJGRP_IS_EMPTY(&((pvolt)->volt_rail_metadata.volt_rails.super)))
+
+/*!
+ * extends boardobj providing attributes common to all voltage_rails.
+ */
+struct voltage_rail {
+        struct boardobj super;
+        u32 boot_voltage_uv;
+        u8 rel_limit_vfe_equ_idx;
+        u8 alt_rel_limit_vfe_equ_idx;
+        u8 ov_limit_vfe_equ_idx;
+        u8 pwr_equ_idx;
+        u8 volt_dev_idx_default;
+        u8 boot_volt_vfe_equ_idx;
+        u8 vmin_limit_vfe_equ_idx;
+        u8 volt_margin_limit_vfe_equ_idx;
+        u32 volt_margin_limit_vfe_equ_mon_handle;
+        u32 rel_limit_vfe_equ_mon_handle;
+        u32 alt_rel_limit_vfe_equ_mon_handle;
+        u32 ov_limit_vfe_equ_mon_handle;
+        struct boardobjgrpmask_e32 volt_dev_mask;
+        s32  volt_delta_uv[CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES];
+};
+
+/*!
+ * metadata of voltage rail functionality.
+ */
+struct voltage_rail_metadata {
+        u8 volt_domain_hal;
+        u8 pct_delta;
+        u32 ext_rel_delta_uv[CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES];
+        struct boardobjgrp_e32 volt_rails;
+};
+
+u8 volt_rail_vbios_volt_domain_convert_to_internal
+        (struct gk20a *g, u8 vbios_volt_domain);
+
+u32 volt_rail_volt_dev_register(struct gk20a *g, struct voltage_rail
+        *pvolt_rail, u8 volt_dev_idx, u8 operation_type);
+
+u8 volt_rail_volt_domain_convert_to_idx(struct gk20a *g, u8 volt_domain);
+
+u32 volt_rail_sw_setup(struct gk20a *g);
+u32 volt_rail_pmu_setup(struct gk20a *g);
+#endif