drivers/staging/omap-thermal/omap5-thermal.c

   1 /*
   2  * OMAP5 thermal driver.
   3  *
   4  * Copyright (C) 2011-2012 Texas Instruments Inc.
   5  * Contact:
   6  *      Eduardo Valentin <eduardo.valentin@ti.com>
   7  *
   8  * This software is licensed under the terms of the GNU General Public
   9  * License version 2, as published by the Free Software Foundation, and
  10  * may be copied, distributed, and modified under those terms.
  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  */
  18
  19 #include "omap-bandgap.h"
  20 #include "omap-thermal.h"
  21
  22 /*
  23  * omap5430 has one instance of thermal sensor for MPU
  24  * need to describe the individual bit fields
  25  */
  26 static struct temp_sensor_registers
  27 omap5430_mpu_temp_sensor_registers = {
  28         .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_MPU_OFFSET,
  29         .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
  30         .bgap_soc_mask = OMAP5430_BGAP_TEMP_SENSOR_SOC_MASK,
  31         .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
  32         .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
  33
  34         .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
  35         .mask_hot_mask = OMAP5430_MASK_HOT_MPU_MASK,
  36         .mask_cold_mask = OMAP5430_MASK_COLD_MPU_MASK,
  37
  38         .bgap_mode_ctrl = OMAP5430_BGAP_COUNTER_MPU_OFFSET,
  39         .mode_ctrl_mask = OMAP5430_REPEAT_MODE_MASK,
  40
  41         .bgap_counter = OMAP5430_BGAP_COUNTER_MPU_OFFSET,
  42         .counter_mask = OMAP5430_COUNTER_MASK,
  43
  44         .bgap_threshold = OMAP5430_BGAP_THRESHOLD_MPU_OFFSET,
  45         .threshold_thot_mask = OMAP5430_T_HOT_MASK,
  46         .threshold_tcold_mask = OMAP5430_T_COLD_MASK,
  47
  48         .tshut_threshold = OMAP5430_BGAP_TSHUT_MPU_OFFSET,
  49         .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
  50         .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
  51
  52         .bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
  53         .status_clean_stop_mask = 0x0,
  54         .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
  55         .status_hot_mask = OMAP5430_HOT_MPU_FLAG_MASK,
  56         .status_cold_mask = OMAP5430_COLD_MPU_FLAG_MASK,
  57
  58         .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_MPU,
  59 };
  60
  61 /*
  62  * omap5430 has one instance of thermal sensor for GPU
  63  * need to describe the individual bit fields
  64  */
  65 static struct temp_sensor_registers
  66 omap5430_gpu_temp_sensor_registers = {
  67         .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_GPU_OFFSET,
  68         .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
  69         .bgap_soc_mask = OMAP5430_BGAP_TEMP_SENSOR_SOC_MASK,
  70         .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
  71         .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
  72
  73         .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
  74         .mask_hot_mask = OMAP5430_MASK_HOT_MM_MASK,
  75         .mask_cold_mask = OMAP5430_MASK_COLD_MM_MASK,
  76
  77         .bgap_mode_ctrl = OMAP5430_BGAP_COUNTER_GPU_OFFSET,
  78         .mode_ctrl_mask = OMAP5430_REPEAT_MODE_MASK,
  79
  80         .bgap_counter = OMAP5430_BGAP_COUNTER_GPU_OFFSET,
  81         .counter_mask = OMAP5430_COUNTER_MASK,
  82
  83         .bgap_threshold = OMAP5430_BGAP_THRESHOLD_GPU_OFFSET,
  84         .threshold_thot_mask = OMAP5430_T_HOT_MASK,
  85         .threshold_tcold_mask = OMAP5430_T_COLD_MASK,
  86
  87         .tshut_threshold = OMAP5430_BGAP_TSHUT_GPU_OFFSET,
  88         .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
  89         .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
  90
  91         .bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
  92         .status_clean_stop_mask = 0x0,
  93         .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
  94         .status_hot_mask = OMAP5430_HOT_MM_FLAG_MASK,
  95         .status_cold_mask = OMAP5430_COLD_MM_FLAG_MASK,
  96
  97         .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_GPU,
  98 };
  99
 100 /*
 101  * omap5430 has one instance of thermal sensor for CORE
 102  * need to describe the individual bit fields
 103  */
 104 static struct temp_sensor_registers
 105 omap5430_core_temp_sensor_registers = {
 106         .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_CORE_OFFSET,
 107         .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK,
 108         .bgap_soc_mask = OMAP5430_BGAP_TEMP_SENSOR_SOC_MASK,
 109         .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK,
 110         .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK,
 111
 112         .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET,
 113         .mask_hot_mask = OMAP5430_MASK_HOT_CORE_MASK,
 114         .mask_cold_mask = OMAP5430_MASK_COLD_CORE_MASK,
 115
 116         .bgap_mode_ctrl = OMAP5430_BGAP_COUNTER_CORE_OFFSET,
 117         .mode_ctrl_mask = OMAP5430_REPEAT_MODE_MASK,
 118
 119         .bgap_counter = OMAP5430_BGAP_COUNTER_CORE_OFFSET,
 120         .counter_mask = OMAP5430_COUNTER_MASK,
 121
 122         .bgap_threshold = OMAP5430_BGAP_THRESHOLD_CORE_OFFSET,
 123         .threshold_thot_mask = OMAP5430_T_HOT_MASK,
 124         .threshold_tcold_mask = OMAP5430_T_COLD_MASK,
 125
 126         .tshut_threshold = OMAP5430_BGAP_TSHUT_CORE_OFFSET,
 127         .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK,
 128         .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK,
 129
 130         .bgap_status = OMAP5430_BGAP_STATUS_OFFSET,
 131         .status_clean_stop_mask = 0x0,
 132         .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK,
 133         .status_hot_mask = OMAP5430_HOT_CORE_FLAG_MASK,
 134         .status_cold_mask = OMAP5430_COLD_CORE_FLAG_MASK,
 135
 136         .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_CORE,
 137 };
 138
 139 /* Thresholds and limits for OMAP5430 MPU temperature sensor */
 140 static struct temp_sensor_data omap5430_mpu_temp_sensor_data = {
 141         .tshut_hot = OMAP5430_MPU_TSHUT_HOT,
 142         .tshut_cold = OMAP5430_MPU_TSHUT_COLD,
 143         .t_hot = OMAP5430_MPU_T_HOT,
 144         .t_cold = OMAP5430_MPU_T_COLD,
 145         .min_freq = OMAP5430_MPU_MIN_FREQ,
 146         .max_freq = OMAP5430_MPU_MAX_FREQ,
 147         .max_temp = OMAP5430_MPU_MAX_TEMP,
 148         .min_temp = OMAP5430_MPU_MIN_TEMP,
 149         .hyst_val = OMAP5430_MPU_HYST_VAL,
 150         .adc_start_val = OMAP5430_ADC_START_VALUE,
 151         .adc_end_val = OMAP5430_ADC_END_VALUE,
 152         .update_int1 = 1000,
 153         .update_int2 = 2000,
 154 };
 155
 156 /* Thresholds and limits for OMAP5430 GPU temperature sensor */
 157 static struct temp_sensor_data omap5430_gpu_temp_sensor_data = {
 158         .tshut_hot = OMAP5430_GPU_TSHUT_HOT,
 159         .tshut_cold = OMAP5430_GPU_TSHUT_COLD,
 160         .t_hot = OMAP5430_GPU_T_HOT,
 161         .t_cold = OMAP5430_GPU_T_COLD,
 162         .min_freq = OMAP5430_GPU_MIN_FREQ,
 163         .max_freq = OMAP5430_GPU_MAX_FREQ,
 164         .max_temp = OMAP5430_GPU_MAX_TEMP,
 165         .min_temp = OMAP5430_GPU_MIN_TEMP,
 166         .hyst_val = OMAP5430_GPU_HYST_VAL,
 167         .adc_start_val = OMAP5430_ADC_START_VALUE,
 168         .adc_end_val = OMAP5430_ADC_END_VALUE,
 169         .update_int1 = 1000,
 170         .update_int2 = 2000,
 171 };
 172
 173 /* Thresholds and limits for OMAP5430 CORE temperature sensor */
 174 static struct temp_sensor_data omap5430_core_temp_sensor_data = {
 175         .tshut_hot = OMAP5430_CORE_TSHUT_HOT,
 176         .tshut_cold = OMAP5430_CORE_TSHUT_COLD,
 177         .t_hot = OMAP5430_CORE_T_HOT,
 178         .t_cold = OMAP5430_CORE_T_COLD,
 179         .min_freq = OMAP5430_CORE_MIN_FREQ,
 180         .max_freq = OMAP5430_CORE_MAX_FREQ,
 181         .max_temp = OMAP5430_CORE_MAX_TEMP,
 182         .min_temp = OMAP5430_CORE_MIN_TEMP,
 183         .hyst_val = OMAP5430_CORE_HYST_VAL,
 184         .adc_start_val = OMAP5430_ADC_START_VALUE,
 185         .adc_end_val = OMAP5430_ADC_END_VALUE,
 186         .update_int1 = 1000,
 187         .update_int2 = 2000,
 188 };
 189
 190 static const int
 191 omap5430_adc_to_temp[OMAP5430_ADC_END_VALUE - OMAP5430_ADC_START_VALUE + 1] = {
 192         -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600,
 193         -38200, -37800, -37300, -36800,
 194         -36400, -36000, -35600, -35200, -34800, -34300, -33800, -33400, -33000,
 195         -32600,
 196         -32200, -31800, -31300, -30800, -30400, -30000, -29600, -29200, -28700,
 197         -28200, -27800, -27400, -27000, -26600, -26200, -25700, -25200, -24800,
 198         -24400, -24000, -23600, -23200, -22700, -22200, -21800, -21400, -21000,
 199         -20600, -20200, -19700, -19200, -9300, -18400, -18000, -17600, -17200,
 200         -16700, -16200, -15800, -15400, -15000, -14600, -14200, -13700, -13200,
 201         -12800, -12400, -12000, -11600, -11200, -10700, -10200, -9800, -9400,
 202         -9000,
 203         -8600, -8200, -7700, -7200, -6800, -6400, -6000, -5600, -5200, -4800,
 204         -4300,
 205         -3800, -3400, -3000, -2600, -2200, -1800, -1300, -800, -400, 0, 400,
 206         800,
 207         1200, 1600, 2100, 2600, 3000, 3400, 3800, 4200, 4600, 5100, 5600, 6000,
 208         6400, 6800, 7200, 7600, 8000, 8500, 9000, 9400, 9800, 10200, 10800,
 209         11100,
 210         11400, 11900, 12400, 12800, 13200, 13600, 14000, 14400, 14800, 15300,
 211         15800,
 212         16200, 16600, 17000, 17400, 17800, 18200, 18700, 19200, 19600, 20000,
 213         20400,
 214         20800, 21200, 21600, 22100, 22600, 23000, 23400, 23800, 24200, 24600,
 215         25000,
 216         25400, 25900, 26400, 26800, 27200, 27600, 28000, 28400, 28800, 29300,
 217         29800,
 218         30200, 30600, 31000, 31400, 31800, 32200, 32600, 33100, 33600, 34000,
 219         34400,
 220         34800, 35200, 35600, 36000, 36400, 36800, 37300, 37800, 38200, 38600,
 221         39000,
 222         39400, 39800, 40200, 40600, 41100, 41600, 42000, 42400, 42800, 43200,
 223         43600,
 224         44000, 44400, 44800, 45300, 45800, 46200, 46600, 47000, 47400, 47800,
 225         48200,
 226         48600, 49000, 49500, 50000, 50400, 50800, 51200, 51600, 52000, 52400,
 227         52800,
 228         53200, 53700, 54200, 54600, 55000, 55400, 55800, 56200, 56600, 57000,
 229         57400,
 230         57800, 58200, 58700, 59200, 59600, 60000, 60400, 60800, 61200, 61600,
 231         62000,
 232         62400, 62800, 63300, 63800, 64200, 64600, 65000, 65400, 65800, 66200,
 233         66600,
 234         67000, 67400, 67800, 68200, 68700, 69200, 69600, 70000, 70400, 70800,
 235         71200,
 236         71600, 72000, 72400, 72800, 73200, 73600, 74100, 74600, 75000, 75400,
 237         75800,
 238         76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, 79400, 79800,
 239         80300,
 240         80800, 81200, 81600, 82000, 82400, 82800, 83200, 83600, 84000, 84400,
 241         84800,
 242         85200, 85600, 86000, 86400, 86800, 87300, 87800, 88200, 88600, 89000,
 243         89400,
 244         89800, 90200, 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400,
 245         93800,
 246         94200, 94600, 95000, 95500, 96000, 96400, 96800, 97200, 97600, 98000,
 247         98400,
 248         98800, 99200, 99600, 100000, 100400, 100800, 101200, 101600, 102000,
 249         102400,
 250         102800, 103200, 103600, 104000, 104400, 104800, 105200, 105600, 106100,
 251         106600, 107000, 107400, 107800, 108200, 108600, 109000, 109400, 109800,
 252         110200, 110600, 111000, 111400, 111800, 112200, 112600, 113000, 113400,
 253         113800, 114200, 114600, 115000, 115400, 115800, 116200, 116600, 117000,
 254         117400, 117800, 118200, 118600, 119000, 119400, 119800, 120200, 120600,
 255         121000, 121400, 121800, 122200, 122600, 123000, 123400, 123800, 124200,
 256         124600, 124900, 125000, 125000, 125000, 125000,
 257 };
 258
 259 const struct omap_bandgap_data omap5430_data = {
 260         .features = OMAP_BANDGAP_FEATURE_TSHUT_CONFIG |
 261                         OMAP_BANDGAP_FEATURE_TALERT |
 262                         OMAP_BANDGAP_FEATURE_MODE_CONFIG |
 263                         OMAP_BANDGAP_FEATURE_COUNTER,
 264         .fclock_name = "ts_clk_div_ck",
 265         .div_ck_name = "ts_clk_div_ck",
 266         .conv_table = omap5430_adc_to_temp,
 267         .expose_sensor = omap_thermal_expose_sensor,
 268         .remove_sensor = omap_thermal_remove_sensor,
 269         .sensors = {
 270                 {
 271                 .registers = &omap5430_mpu_temp_sensor_registers,
 272                 .ts_data = &omap5430_mpu_temp_sensor_data,
 273                 .domain = "cpu",
 274                 .register_cooling = omap_thermal_register_cpu_cooling,
 275                 .unregister_cooling = omap_thermal_unregister_cpu_cooling,
 276                 .slope = OMAP_GRADIENT_SLOPE_5430_CPU,
 277                 .constant = OMAP_GRADIENT_CONST_5430_CPU,
 278                 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU,
 279                 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_CPU,
 280                 },
 281                 {
 282                 .registers = &omap5430_gpu_temp_sensor_registers,
 283                 .ts_data = &omap5430_gpu_temp_sensor_data,
 284                 .domain = "gpu",
 285                 .slope = OMAP_GRADIENT_SLOPE_5430_GPU,
 286                 .constant = OMAP_GRADIENT_CONST_5430_GPU,
 287                 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU,
 288                 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_GPU,
 289                 },
 290                 {
 291                 .registers = &omap5430_core_temp_sensor_registers,
 292                 .ts_data = &omap5430_core_temp_sensor_data,
 293                 .domain = "core",
 294                 },
 295         },
 296         .sensor_count = 3,
 297 };