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1/*
2 * exynos_thermal.h - Samsung EXYNOS TMU (Thermal Management Unit)
3 *
4 * Copyright (C) 2011 Samsung Electronics
5 * Donggeun Kim <dg77.kim@samsung.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#ifndef _LINUX_EXYNOS_THERMAL_H
23#define _LINUX_EXYNOS_THERMAL_H
24#include <linux/cpu_cooling.h>
25
26enum calibration_type {
27 TYPE_ONE_POINT_TRIMMING,
28 TYPE_TWO_POINT_TRIMMING,
29 TYPE_NONE,
30};
31
32enum soc_type {
33 SOC_ARCH_EXYNOS4210 = 1,
34 SOC_ARCH_EXYNOS,
35};
36/**
37 * struct freq_clip_table
38 * @freq_clip_max: maximum frequency allowed for this cooling state.
39 * @temp_level: Temperature level at which the temperature clipping will
40 * happen.
41 * @mask_val: cpumask of the allowed cpu's where the clipping will take place.
42 *
43 * This structure is required to be filled and passed to the
44 * cpufreq_cooling_unregister function.
45 */
46struct freq_clip_table {
47 unsigned int freq_clip_max;
48 unsigned int temp_level;
49 const struct cpumask *mask_val;
50};
51
52/**
53 * struct exynos_tmu_platform_data
54 * @threshold: basic temperature for generating interrupt
55 * 25 <= threshold <= 125 [unit: degree Celsius]
56 * @threshold_falling: differntial value for setting threshold
57 * of temperature falling interrupt.
58 * @trigger_levels: array for each interrupt levels
59 * [unit: degree Celsius]
60 * 0: temperature for trigger_level0 interrupt
61 * condition for trigger_level0 interrupt:
62 * current temperature > threshold + trigger_levels[0]
63 * 1: temperature for trigger_level1 interrupt
64 * condition for trigger_level1 interrupt:
65 * current temperature > threshold + trigger_levels[1]
66 * 2: temperature for trigger_level2 interrupt
67 * condition for trigger_level2 interrupt:
68 * current temperature > threshold + trigger_levels[2]
69 * 3: temperature for trigger_level3 interrupt
70 * condition for trigger_level3 interrupt:
71 * current temperature > threshold + trigger_levels[3]
72 * @trigger_level0_en:
73 * 1 = enable trigger_level0 interrupt,
74 * 0 = disable trigger_level0 interrupt
75 * @trigger_level1_en:
76 * 1 = enable trigger_level1 interrupt,
77 * 0 = disable trigger_level1 interrupt
78 * @trigger_level2_en:
79 * 1 = enable trigger_level2 interrupt,
80 * 0 = disable trigger_level2 interrupt
81 * @trigger_level3_en:
82 * 1 = enable trigger_level3 interrupt,
83 * 0 = disable trigger_level3 interrupt
84 * @gain: gain of amplifier in the positive-TC generator block
85 * 0 <= gain <= 15
86 * @reference_voltage: reference voltage of amplifier
87 * in the positive-TC generator block
88 * 0 <= reference_voltage <= 31
89 * @noise_cancel_mode: noise cancellation mode
90 * 000, 100, 101, 110 and 111 can be different modes
91 * @type: determines the type of SOC
92 * @efuse_value: platform defined fuse value
93 * @cal_type: calibration type for temperature
94 * @freq_clip_table: Table representing frequency reduction percentage.
95 * @freq_tab_count: Count of the above table as frequency reduction may
96 * applicable to only some of the trigger levels.
97 *
98 * This structure is required for configuration of exynos_tmu driver.
99 */
100struct exynos_tmu_platform_data {
101 u8 threshold;
102 u8 threshold_falling;
103 u8 trigger_levels[4];
104 bool trigger_level0_en;
105 bool trigger_level1_en;
106 bool trigger_level2_en;
107 bool trigger_level3_en;
108
109 u8 gain;
110 u8 reference_voltage;
111 u8 noise_cancel_mode;
112 u32 efuse_value;
113
114 enum calibration_type cal_type;
115 enum soc_type type;
116 struct freq_clip_table freq_tab[4];
117 unsigned int freq_tab_count;
118};
119#endif /* _LINUX_EXYNOS_THERMAL_H */