1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * OMAP thermal definitions
4  *
5  * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
6  * Contact:
7  *   Eduardo Valentin <eduardo.valentin@ti.com>
8  */
9 #ifndef __TI_THERMAL_H
10 #define __TI_THERMAL_H
11 
12 #include "ti-bandgap.h"
13 
14 /* PCB sensor calculation constants */
15 #define OMAP_GRADIENT_SLOPE_W_PCB_4430				0
16 #define OMAP_GRADIENT_CONST_W_PCB_4430				20000
17 #define OMAP_GRADIENT_SLOPE_W_PCB_4460				1142
18 #define OMAP_GRADIENT_CONST_W_PCB_4460				-393
19 #define OMAP_GRADIENT_SLOPE_W_PCB_4470				1063
20 #define OMAP_GRADIENT_CONST_W_PCB_4470				-477
21 
22 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU			100
23 #define OMAP_GRADIENT_CONST_W_PCB_5430_CPU			484
24 #define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU			464
25 #define OMAP_GRADIENT_CONST_W_PCB_5430_GPU			-5102
26 
27 #define DRA752_GRADIENT_SLOPE_W_PCB				0
28 #define DRA752_GRADIENT_CONST_W_PCB				2000
29 
30 /* trip points of interest in milicelsius (at hotspot level) */
31 #define OMAP_TRIP_COLD						100000
32 #define OMAP_TRIP_HOT						110000
33 #define OMAP_TRIP_SHUTDOWN					125000
34 #define OMAP_TRIP_NUMBER					2
35 #define OMAP_TRIP_STEP							\
36 	((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))
37 
38 /* Update rates */
39 #define FAST_TEMP_MONITORING_RATE				250
40 
41 /* helper macros */
42 /**
43  * ti_thermal_get_trip_value - returns trip temperature based on index
44  * @i:	trip index
45  */
46 #define ti_thermal_get_trip_value(i)					\
47 	(OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))
48 
49 /**
50  * ti_thermal_is_valid_trip - check for trip index
51  * @i:	trip index
52  */
53 #define ti_thermal_is_valid_trip(trip)				\
54 	((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)
55 
56 #ifdef CONFIG_TI_THERMAL
57 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain);
58 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id);
59 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id);
60 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id);
61 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id);
62 #else
63 static inline
ti_thermal_expose_sensor(struct ti_bandgap * bgp,int id,char * domain)64 int ti_thermal_expose_sensor(struct ti_bandgap *bgp, int id, char *domain)
65 {
66 	return 0;
67 }
68 
69 static inline
ti_thermal_remove_sensor(struct ti_bandgap * bgp,int id)70 int ti_thermal_remove_sensor(struct ti_bandgap *bgp, int id)
71 {
72 	return 0;
73 }
74 
75 static inline
ti_thermal_report_sensor_temperature(struct ti_bandgap * bgp,int id)76 int ti_thermal_report_sensor_temperature(struct ti_bandgap *bgp, int id)
77 {
78 	return 0;
79 }
80 
81 static inline
ti_thermal_register_cpu_cooling(struct ti_bandgap * bgp,int id)82 int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
83 {
84 	return 0;
85 }
86 
87 static inline
ti_thermal_unregister_cpu_cooling(struct ti_bandgap * bgp,int id)88 int ti_thermal_unregister_cpu_cooling(struct ti_bandgap *bgp, int id)
89 {
90 	return 0;
91 }
92 #endif
93 #endif
94