tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Utility functions for parsing Tegra CVB voltage tables
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 */
14
15#ifndef __DRIVERS_CLK_TEGRA_CVB_H
16#define __DRIVERS_CLK_TEGRA_CVB_H
17
18#include <linux/types.h>
19
20struct device;
21
22#define MAX_DVFS_FREQS 40
23
24struct rail_alignment {
25 int offset_uv;
26 int step_uv;
27};
28
29struct cvb_coefficients {
30 int c0;
31 int c1;
32 int c2;
33};
34
35struct cvb_table_freq_entry {
36 unsigned long freq;
37 struct cvb_coefficients coefficients;
38};
39
40struct cvb_cpu_dfll_data {
41 u32 tune0_low;
42 u32 tune0_high;
43 u32 tune1;
44 unsigned int tune_high_min_millivolts;
45};
46
47struct cvb_table {
48 int speedo_id;
49 int process_id;
50
51 int min_millivolts;
52 int max_millivolts;
53
54 int speedo_scale;
55 int voltage_scale;
56 struct cvb_table_freq_entry entries[MAX_DVFS_FREQS];
57 struct cvb_cpu_dfll_data cpu_dfll_data;
58};
59
60const struct cvb_table *
61tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
62 size_t count, struct rail_alignment *align,
63 int process_id, int speedo_id, int speedo_value,
64 unsigned long max_freq);
65void tegra_cvb_remove_opp_table(struct device *dev,
66 const struct cvb_table *table,
67 unsigned long max_freq);
68
69#endif