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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
20 struct device;
21
22 #define MAX_DVFS_FREQS 40
23
24 struct rail_alignment {
25 int offset_uv;
26 int step_uv;
27 };
28
29 struct cvb_coefficients {
30 int c0;
31 int c1;
32 int c2;
33 };
34
35 struct cvb_table_freq_entry {
36 unsigned long freq;
37 struct cvb_coefficients coefficients;
38 };
39
40 struct cvb_cpu_dfll_data {
41 u32 tune0_low;
42 u32 tune0_high;
43 u32 tune1;
44 };
45
46 struct cvb_table {
47 int speedo_id;
48 int process_id;
49
50 int min_millivolts;
51 int max_millivolts;
52 struct rail_alignment alignment;
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
60 const struct cvb_table *
61 tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
62 size_t count, int process_id, int speedo_id,
63 int speedo_value, unsigned long max_freq);
64 void tegra_cvb_remove_opp_table(struct device *dev,
65 const struct cvb_table *table,
66 unsigned long max_freq);
67
68 #endif