117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/*
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* gk20a DVFS header
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*
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* Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _GK20A_DVFS_H_
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#define _GK20A_DVFS_H_
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#define MAX_DVFS_FREQS 40
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#define MAX_DVFS_TABLES 80
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#define MAX_THERMAL_FLOORS 8
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#define MAX_THERMAL_LIMITS 8
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#define MAX_THERMAL_RANGES (MAX_THERMAL_LIMITS + 1)
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struct gk20a_cvb_parameters {
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int c0;
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int c1;
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int c2;
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int c3;
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int c4;
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int c5;
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};
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struct gk20a_cvb_table {
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unsigned long freq;
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struct gk20a_cvb_parameters cvb_param;
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};
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struct gk20a_cvb_info {
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int speedo_id;
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int process_id;
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int max_mv;
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int min_mv;
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int speedo_scale;
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int voltage_scale;
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int thermal_scale;
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struct gk20a_cvb_table cvb_table[MAX_DVFS_FREQS];
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int vmin_trips_table[MAX_THERMAL_LIMITS];
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int therm_floors_table[MAX_THERMAL_LIMITS];
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int vts_trips_table[MAX_THERMAL_LIMITS];
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};
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struct gk20a_dvfs_rail {
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const char *supply_name;
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struct device *dev;
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struct regulator *reg;
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u32 max_uv;
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u32 min_uv;
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u32 nominal_uv;
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int step_uv;
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const int *therm_mv_floors;
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int therm_mv_floors_num;
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int therm_floor_idx;
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int therm_scale_idx;
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struct tegra_cooling_device *vmin_cdev;
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struct tegra_cooling_device *vts_cdev;
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};
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/**
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* gk20a_dvfs - gk20a dvfs instance
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*
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* @g: the gk20a instance
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* @rail: the instance to the connected rail
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* @num_freqs: the number of the available frequencies for gk20a
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* @freqs: the available frequencies for gk20a
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* @millivolts: the required voltages for the frequency with the same index
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* @therm_dvfs: true if the dvfs table depends on the thermal
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*/
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struct gk20a_dvfs {
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struct gk20a *g;
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struct gk20a_dvfs_rail *rail;
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int speedo_id;
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int process_id;
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int freqs_mult;
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int num_freqs;
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unsigned long freqs[MAX_DVFS_FREQS];
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int *millivolts;
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int max_millivolts;
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int cur_millivolts;
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unsigned long int cur_rate;
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bool therm_dvfs;
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};
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int gk20a_dvfs_init(struct platform_device *pdev, struct gk20a *g);
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int gk20a_dvfs_adjust_voltage(struct gk20a *g, unsigned long rate);
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int gk20a_dvfs_get_freqs(struct gk20a *g, unsigned long **freqs,
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int *num_freqs);
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unsigned long gk20a_dvfs_get_min_freq(struct gk20a *g);
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unsigned long gk20a_dvfs_get_max_freq(struct gk20a *g);
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int gk20a_dvfs_enable_rail(struct platform_device *pdev, struct gk20a *g);
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int gk20a_dvfs_disable_rail(struct platform_device *pdev, struct gk20a *g);
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int gk20a_dvfs_init_dvfs_table(struct platform_device *pdev, struct gk20a *g);
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#endif
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