Root/drivers/staging/omap-thermal/omap-thermal.h

1/*
2 * OMAP thermal definitions
3 *
4 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
5 * Contact:
6 * Eduardo Valentin <eduardo.valentin@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * 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., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23#ifndef __OMAP_THERMAL_H
24#define __OMAP_THERMAL_H
25
26#include "omap-bandgap.h"
27
28/* sensors gradient and offsets */
29#define OMAP_GRADIENT_SLOPE_4460 348
30#define OMAP_GRADIENT_CONST_4460 -9301
31#define OMAP_GRADIENT_SLOPE_4470 308
32#define OMAP_GRADIENT_CONST_4470 -7896
33
34#define OMAP_GRADIENT_SLOPE_5430_CPU 196
35#define OMAP_GRADIENT_CONST_5430_CPU -6822
36#define OMAP_GRADIENT_SLOPE_5430_GPU 64
37#define OMAP_GRADIENT_CONST_5430_GPU 978
38
39/* PCB sensor calculation constants */
40#define OMAP_GRADIENT_SLOPE_W_PCB_4460 1142
41#define OMAP_GRADIENT_CONST_W_PCB_4460 -393
42#define OMAP_GRADIENT_SLOPE_W_PCB_4470 1063
43#define OMAP_GRADIENT_CONST_W_PCB_4470 -477
44
45#define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU 469
46#define OMAP_GRADIENT_CONST_W_PCB_5430_CPU -1272
47#define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU 378
48#define OMAP_GRADIENT_CONST_W_PCB_5430_GPU 154
49
50/* trip points of interest in milicelsius (at hotspot level) */
51#define OMAP_TRIP_COLD 100000
52#define OMAP_TRIP_HOT 110000
53#define OMAP_TRIP_SHUTDOWN 125000
54#define OMAP_TRIP_NUMBER 2
55#define OMAP_TRIP_STEP \
56    ((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
57
58/* Update rates */
59#define FAST_TEMP_MONITORING_RATE 250
60
61/* helper macros */
62/**
63 * omap_thermal_get_trip_value - returns trip temperature based on index
64 * @i: trip index
65 */
66#define omap_thermal_get_trip_value(i) \
67    (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
68
69/**
70 * omap_thermal_is_valid_trip - check for trip index
71 * @i: trip index
72 */
73#define omap_thermal_is_valid_trip(trip) \
74    ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
75
76#ifdef CONFIG_OMAP_THERMAL
77int omap_thermal_expose_sensor(struct omap_bandgap *bg_ptr, int id,
78                   char *domain);
79int omap_thermal_remove_sensor(struct omap_bandgap *bg_ptr, int id);
80int omap_thermal_register_cpu_cooling(struct omap_bandgap *bg_ptr, int id);
81int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bg_ptr, int id);
82#else
83static inline
84int omap_thermal_expose_sensor(struct omap_bandgap *bg_ptr, int id,
85                   char *domain)
86{
87    return 0;
88}
89
90static inline
91int omap_thermal_remove_sensor(struct omap_bandgap *bg_ptr, int id)
92{
93    return 0;
94}
95
96static inline
97int omap_thermal_register_cpu_cooling(struct omap_bandgap *bg_ptr, int id)
98{
99    return 0;
100}
101
102static inline
103int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bg_ptr, int id)
104{
105    return 0;
106}
107#endif
108#endif
109

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