include/linux/platform_data/exynos4_tmu.h

   1 /*
   2  * exynos4_tmu.h - Samsung EXYNOS4 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_EXYNOS4_TMU_H
  23 #define _LINUX_EXYNOS4_TMU_H
  24
  25 enum calibration_type {
  26         TYPE_ONE_POINT_TRIMMING,
  27         TYPE_TWO_POINT_TRIMMING,
  28         TYPE_NONE,
  29 };
  30
  31 /**
  32  * struct exynos4_tmu_platform_data
  33  * @threshold: basic temperature for generating interrupt
  34  *             25 <= threshold <= 125 [unit: degree Celsius]
  35  * @trigger_levels: array for each interrupt levels
  36  *      [unit: degree Celsius]
  37  *      0: temperature for trigger_level0 interrupt
  38  *         condition for trigger_level0 interrupt:
  39  *              current temperature > threshold + trigger_levels[0]
  40  *      1: temperature for trigger_level1 interrupt
  41  *         condition for trigger_level1 interrupt:
  42  *              current temperature > threshold + trigger_levels[1]
  43  *      2: temperature for trigger_level2 interrupt
  44  *         condition for trigger_level2 interrupt:
  45  *              current temperature > threshold + trigger_levels[2]
  46  *      3: temperature for trigger_level3 interrupt
  47  *         condition for trigger_level3 interrupt:
  48  *              current temperature > threshold + trigger_levels[3]
  49  * @trigger_level0_en:
  50  *      1 = enable trigger_level0 interrupt,
  51  *      0 = disable trigger_level0 interrupt
  52  * @trigger_level1_en:
  53  *      1 = enable trigger_level1 interrupt,
  54  *      0 = disable trigger_level1 interrupt
  55  * @trigger_level2_en:
  56  *      1 = enable trigger_level2 interrupt,
  57  *      0 = disable trigger_level2 interrupt
  58  * @trigger_level3_en:
  59  *      1 = enable trigger_level3 interrupt,
  60  *      0 = disable trigger_level3 interrupt
  61  * @gain: gain of amplifier in the positive-TC generator block
  62  *      0 <= gain <= 15
  63  * @reference_voltage: reference voltage of amplifier
  64  *      in the positive-TC generator block
  65  *      0 <= reference_voltage <= 31
  66  * @cal_type: calibration type for temperature
  67  *
  68  * This structure is required for configuration of exynos4_tmu driver.
  69  */
  70 struct exynos4_tmu_platform_data {
  71         u8 threshold;
  72         u8 trigger_levels[4];
  73         bool trigger_level0_en;
  74         bool trigger_level1_en;
  75         bool trigger_level2_en;
  76         bool trigger_level3_en;
  77
  78         u8 gain;
  79         u8 reference_voltage;
  80
  81         enum calibration_type cal_type;
  82 };
  83 #endif /* _LINUX_EXYNOS4_TMU_H */