omap-thermal.h

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/*
 * OMAP thermal definitions
 *
 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
 * Contact:
 *   Eduardo Valentin <[email protected]>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */
#ifndef __OMAP_THERMAL_H
#define __OMAP_THERMAL_H

#include "omap-bandgap.h"

/* sensors gradient and offsets */
#define OMAP_GRADIENT_SLOPE_4460                348
#define OMAP_GRADIENT_CONST_4460                -9301
#define OMAP_GRADIENT_SLOPE_4470                308
#define OMAP_GRADIENT_CONST_4470                -7896

#define OMAP_GRADIENT_SLOPE_5430_CPU                196
#define OMAP_GRADIENT_CONST_5430_CPU                -6822
#define OMAP_GRADIENT_SLOPE_5430_GPU                64
#define OMAP_GRADIENT_CONST_5430_GPU                978

/* PCB sensor calculation constants */
#define OMAP_GRADIENT_SLOPE_W_PCB_4460              1142
#define OMAP_GRADIENT_CONST_W_PCB_4460              -393
#define OMAP_GRADIENT_SLOPE_W_PCB_4470              1063
#define OMAP_GRADIENT_CONST_W_PCB_4470              -477

#define OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU          469
#define OMAP_GRADIENT_CONST_W_PCB_5430_CPU          -1272
#define OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU          378
#define OMAP_GRADIENT_CONST_W_PCB_5430_GPU          154

/* trip points of interest in milicelsius (at hotspot level) */
#define OMAP_TRIP_COLD                      100000
#define OMAP_TRIP_HOT                       110000
#define OMAP_TRIP_SHUTDOWN                  125000
#define OMAP_TRIP_NUMBER                    2
#define OMAP_TRIP_STEP                          \
    ((OMAP_TRIP_SHUTDOWN - OMAP_TRIP_HOT) / (OMAP_TRIP_NUMBER - 1))

/* Update rates */
#define FAST_TEMP_MONITORING_RATE               250

/* helper macros */
#define omap_thermal_get_trip_value(i)                  \
    (OMAP_TRIP_HOT + ((i) * OMAP_TRIP_STEP))

#define omap_thermal_is_valid_trip(trip)                \
    ((trip) >= 0 && (trip) < OMAP_TRIP_NUMBER)

#ifdef CONFIG_OMAP_THERMAL
int omap_thermal_expose_sensor(struct omap_bandgap *bg_ptr, int id,
                   char *domain);
int omap_thermal_remove_sensor(struct omap_bandgap *bg_ptr, int id);
int omap_thermal_register_cpu_cooling(struct omap_bandgap *bg_ptr, int id);
int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bg_ptr, int id);
#else
static inline
int omap_thermal_expose_sensor(struct omap_bandgap *bg_ptr, int id,
                   char *domain)
{
    return 0;
}

static inline
int omap_thermal_remove_sensor(struct omap_bandgap *bg_ptr, int id)
{
    return 0;
}

static inline
int omap_thermal_register_cpu_cooling(struct omap_bandgap *bg_ptr, int id)
{
    return 0;
}

static inline
int omap_thermal_unregister_cpu_cooling(struct omap_bandgap *bg_ptr, int id)
{
    return 0;
}
#endif
#endif