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 "ti-thermal.h" 20 #include "ti-bandgap.h" 21 #include "omap5xxx-bandgap.h" 22 23 /* 24 * OMAP5430 has three instances of thermal sensor for MPU, GPU & CORE, 25 * need to describe the individual registers and bit fields. 26 */ 27 28 /* 29 * OMAP5430 MPU thermal sensor register offset and bit-fields 30 */ 31 static struct temp_sensor_registers 32 omap5430_mpu_temp_sensor_registers = { 33 .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_MPU_OFFSET, 34 .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK, 35 .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK, 36 .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK, 37 38 .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET, 39 .mask_hot_mask = OMAP5430_MASK_HOT_MPU_MASK, 40 .mask_cold_mask = OMAP5430_MASK_COLD_MPU_MASK, 41 .mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK, 42 .mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK, 43 .mask_freeze_mask = OMAP5430_MASK_FREEZE_MPU_MASK, 44 .mask_clear_mask = OMAP5430_MASK_CLEAR_MPU_MASK, 45 .mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_MPU_MASK, 46 47 48 .bgap_counter = OMAP5430_BGAP_CTRL_OFFSET, 49 .counter_mask = OMAP5430_COUNTER_MASK, 50 51 .bgap_threshold = OMAP5430_BGAP_THRESHOLD_MPU_OFFSET, 52 .threshold_thot_mask = OMAP5430_T_HOT_MASK, 53 .threshold_tcold_mask = OMAP5430_T_COLD_MASK, 54 55 .tshut_threshold = OMAP5430_BGAP_TSHUT_MPU_OFFSET, 56 .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK, 57 .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK, 58 59 .bgap_status = OMAP5430_BGAP_STATUS_OFFSET, 60 .status_clean_stop_mask = 0x0, 61 .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK, 62 .status_hot_mask = OMAP5430_HOT_MPU_FLAG_MASK, 63 .status_cold_mask = OMAP5430_COLD_MPU_FLAG_MASK, 64 65 .bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_MPU_OFFSET, 66 .ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_MPU_0_OFFSET, 67 .ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_MPU_1_OFFSET, 68 .ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_MPU_2_OFFSET, 69 .ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_MPU_3_OFFSET, 70 .ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_MPU_4_OFFSET, 71 .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_MPU, 72 }; 73 74 /* 75 * OMAP5430 GPU thermal sensor register offset and bit-fields 76 */ 77 static struct temp_sensor_registers 78 omap5430_gpu_temp_sensor_registers = { 79 .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_GPU_OFFSET, 80 .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK, 81 .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK, 82 .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK, 83 84 .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET, 85 .mask_hot_mask = OMAP5430_MASK_HOT_GPU_MASK, 86 .mask_cold_mask = OMAP5430_MASK_COLD_GPU_MASK, 87 .mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK, 88 .mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK, 89 .mask_freeze_mask = OMAP5430_MASK_FREEZE_GPU_MASK, 90 .mask_clear_mask = OMAP5430_MASK_CLEAR_GPU_MASK, 91 .mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_GPU_MASK, 92 93 .bgap_counter = OMAP5430_BGAP_CTRL_OFFSET, 94 .counter_mask = OMAP5430_COUNTER_MASK, 95 96 .bgap_threshold = OMAP5430_BGAP_THRESHOLD_GPU_OFFSET, 97 .threshold_thot_mask = OMAP5430_T_HOT_MASK, 98 .threshold_tcold_mask = OMAP5430_T_COLD_MASK, 99 100 .tshut_threshold = OMAP5430_BGAP_TSHUT_GPU_OFFSET, 101 .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK, 102 .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK, 103 104 .bgap_status = OMAP5430_BGAP_STATUS_OFFSET, 105 .status_clean_stop_mask = 0x0, 106 .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK, 107 .status_hot_mask = OMAP5430_HOT_GPU_FLAG_MASK, 108 .status_cold_mask = OMAP5430_COLD_GPU_FLAG_MASK, 109 110 .bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_GPU_OFFSET, 111 .ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_GPU_0_OFFSET, 112 .ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_GPU_1_OFFSET, 113 .ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_GPU_2_OFFSET, 114 .ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_GPU_3_OFFSET, 115 .ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_GPU_4_OFFSET, 116 117 .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_GPU, 118 }; 119 120 /* 121 * OMAP5430 CORE thermal sensor register offset and bit-fields 122 */ 123 static struct temp_sensor_registers 124 omap5430_core_temp_sensor_registers = { 125 .temp_sensor_ctrl = OMAP5430_TEMP_SENSOR_CORE_OFFSET, 126 .bgap_tempsoff_mask = OMAP5430_BGAP_TEMPSOFF_MASK, 127 .bgap_eocz_mask = OMAP5430_BGAP_TEMP_SENSOR_EOCZ_MASK, 128 .bgap_dtemp_mask = OMAP5430_BGAP_TEMP_SENSOR_DTEMP_MASK, 129 130 .bgap_mask_ctrl = OMAP5430_BGAP_CTRL_OFFSET, 131 .mask_hot_mask = OMAP5430_MASK_HOT_CORE_MASK, 132 .mask_cold_mask = OMAP5430_MASK_COLD_CORE_MASK, 133 .mask_sidlemode_mask = OMAP5430_MASK_SIDLEMODE_MASK, 134 .mask_counter_delay_mask = OMAP5430_MASK_COUNTER_DELAY_MASK, 135 .mask_freeze_mask = OMAP5430_MASK_FREEZE_CORE_MASK, 136 .mask_clear_mask = OMAP5430_MASK_CLEAR_CORE_MASK, 137 .mask_clear_accum_mask = OMAP5430_MASK_CLEAR_ACCUM_CORE_MASK, 138 139 .bgap_counter = OMAP5430_BGAP_CTRL_OFFSET, 140 .counter_mask = OMAP5430_COUNTER_MASK, 141 142 .bgap_threshold = OMAP5430_BGAP_THRESHOLD_CORE_OFFSET, 143 .threshold_thot_mask = OMAP5430_T_HOT_MASK, 144 .threshold_tcold_mask = OMAP5430_T_COLD_MASK, 145 146 .tshut_threshold = OMAP5430_BGAP_TSHUT_CORE_OFFSET, 147 .tshut_hot_mask = OMAP5430_TSHUT_HOT_MASK, 148 .tshut_cold_mask = OMAP5430_TSHUT_COLD_MASK, 149 150 .bgap_status = OMAP5430_BGAP_STATUS_OFFSET, 151 .status_clean_stop_mask = 0x0, 152 .status_bgap_alert_mask = OMAP5430_BGAP_ALERT_MASK, 153 .status_hot_mask = OMAP5430_HOT_CORE_FLAG_MASK, 154 .status_cold_mask = OMAP5430_COLD_CORE_FLAG_MASK, 155 156 .bgap_cumul_dtemp = OMAP5430_BGAP_CUMUL_DTEMP_CORE_OFFSET, 157 .ctrl_dtemp_0 = OMAP5430_BGAP_DTEMP_CORE_0_OFFSET, 158 .ctrl_dtemp_1 = OMAP5430_BGAP_DTEMP_CORE_1_OFFSET, 159 .ctrl_dtemp_2 = OMAP5430_BGAP_DTEMP_CORE_2_OFFSET, 160 .ctrl_dtemp_3 = OMAP5430_BGAP_DTEMP_CORE_3_OFFSET, 161 .ctrl_dtemp_4 = OMAP5430_BGAP_DTEMP_CORE_4_OFFSET, 162 163 .bgap_efuse = OMAP5430_FUSE_OPP_BGAP_CORE, 164 }; 165 166 /* Thresholds and limits for OMAP5430 MPU temperature sensor */ 167 static struct temp_sensor_data omap5430_mpu_temp_sensor_data = { 168 .tshut_hot = OMAP5430_MPU_TSHUT_HOT, 169 .tshut_cold = OMAP5430_MPU_TSHUT_COLD, 170 .t_hot = OMAP5430_MPU_T_HOT, 171 .t_cold = OMAP5430_MPU_T_COLD, 172 .min_freq = OMAP5430_MPU_MIN_FREQ, 173 .max_freq = OMAP5430_MPU_MAX_FREQ, 174 .max_temp = OMAP5430_MPU_MAX_TEMP, 175 .min_temp = OMAP5430_MPU_MIN_TEMP, 176 .hyst_val = OMAP5430_MPU_HYST_VAL, 177 .update_int1 = 1000, 178 .update_int2 = 2000, 179 }; 180 181 /* Thresholds and limits for OMAP5430 GPU temperature sensor */ 182 static struct temp_sensor_data omap5430_gpu_temp_sensor_data = { 183 .tshut_hot = OMAP5430_GPU_TSHUT_HOT, 184 .tshut_cold = OMAP5430_GPU_TSHUT_COLD, 185 .t_hot = OMAP5430_GPU_T_HOT, 186 .t_cold = OMAP5430_GPU_T_COLD, 187 .min_freq = OMAP5430_GPU_MIN_FREQ, 188 .max_freq = OMAP5430_GPU_MAX_FREQ, 189 .max_temp = OMAP5430_GPU_MAX_TEMP, 190 .min_temp = OMAP5430_GPU_MIN_TEMP, 191 .hyst_val = OMAP5430_GPU_HYST_VAL, 192 .update_int1 = 1000, 193 .update_int2 = 2000, 194 }; 195 196 /* Thresholds and limits for OMAP5430 CORE temperature sensor */ 197 static struct temp_sensor_data omap5430_core_temp_sensor_data = { 198 .tshut_hot = OMAP5430_CORE_TSHUT_HOT, 199 .tshut_cold = OMAP5430_CORE_TSHUT_COLD, 200 .t_hot = OMAP5430_CORE_T_HOT, 201 .t_cold = OMAP5430_CORE_T_COLD, 202 .min_freq = OMAP5430_CORE_MIN_FREQ, 203 .max_freq = OMAP5430_CORE_MAX_FREQ, 204 .max_temp = OMAP5430_CORE_MAX_TEMP, 205 .min_temp = OMAP5430_CORE_MIN_TEMP, 206 .hyst_val = OMAP5430_CORE_HYST_VAL, 207 .update_int1 = 1000, 208 .update_int2 = 2000, 209 }; 210 211 /* 212 * OMAP54xx ES2.0 : Temperature values in milli degree celsius 213 * ADC code values from 540 to 945 214 */ 215 static int 216 omap5430_adc_to_temp[ 217 OMAP5430_ADC_END_VALUE - OMAP5430_ADC_START_VALUE + 1] = { 218 /* Index 540 - 549 */ 219 -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200, 220 -37800, 221 /* Index 550 - 559 */ 222 -37400, -37000, -36600, -36200, -35800, -35300, -34700, -34200, -33800, 223 -33400, 224 /* Index 560 - 569 */ 225 -33000, -32600, -32200, -31800, -31400, -31000, -30600, -30200, -29800, 226 -29400, 227 /* Index 570 - 579 */ 228 -29000, -28600, -28200, -27700, -27100, -26600, -26200, -25800, -25400, 229 -25000, 230 /* Index 580 - 589 */ 231 -24600, -24200, -23800, -23400, -23000, -22600, -22200, -21600, -21400, 232 -21000, 233 /* Index 590 - 599 */ 234 -20500, -19900, -19400, -19000, -18600, -18200, -17800, -17400, -17000, 235 -16600, 236 /* Index 600 - 609 */ 237 -16200, -15800, -15400, -15000, -14600, -14200, -13800, -13400, -13000, 238 -12500, 239 /* Index 610 - 619 */ 240 -11900, -11400, -11000, -10600, -10200, -9800, -9400, -9000, -8600, 241 -8200, 242 /* Index 620 - 629 */ 243 -7800, -7400, -7000, -6600, -6200, -5800, -5400, -5000, -4500, -3900, 244 /* Index 630 - 639 */ 245 -3400, -3000, -2600, -2200, -1800, -1400, -1000, -600, -200, 200, 246 /* Index 640 - 649 */ 247 600, 1000, 1400, 1800, 2200, 2600, 3000, 3400, 3900, 4500, 248 /* Index 650 - 659 */ 249 5000, 5400, 5800, 6200, 6600, 7000, 7400, 7800, 8200, 8600, 250 /* Index 660 - 669 */ 251 9000, 9400, 9800, 10200, 10600, 11000, 11400, 11800, 12200, 12700, 252 /* Index 670 - 679 */ 253 13300, 13800, 14200, 14600, 15000, 15400, 15800, 16200, 16600, 17000, 254 /* Index 680 - 689 */ 255 17400, 17800, 18200, 18600, 19000, 19400, 19800, 20200, 20600, 21100, 256 /* Index 690 - 699 */ 257 21400, 21900, 22500, 23000, 23400, 23800, 24200, 24600, 25000, 25400, 258 /* Index 700 - 709 */ 259 25800, 26200, 26600, 27000, 27400, 27800, 28200, 28600, 29000, 29400, 260 /* Index 710 - 719 */ 261 29800, 30200, 30600, 31000, 31400, 31900, 32500, 33000, 33400, 33800, 262 /* Index 720 - 729 */ 263 34200, 34600, 35000, 35400, 35800, 36200, 36600, 37000, 37400, 37800, 264 /* Index 730 - 739 */ 265 38200, 38600, 39000, 39400, 39800, 40200, 40600, 41000, 41400, 41800, 266 /* Index 740 - 749 */ 267 42200, 42600, 43100, 43700, 44200, 44600, 45000, 45400, 45800, 46200, 268 /* Index 750 - 759 */ 269 46600, 47000, 47400, 47800, 48200, 48600, 49000, 49400, 49800, 50200, 270 /* Index 760 - 769 */ 271 50600, 51000, 51400, 51800, 52200, 52600, 53000, 53400, 53800, 54200, 272 /* Index 770 - 779 */ 273 54600, 55000, 55400, 55900, 56500, 57000, 57400, 57800, 58200, 58600, 274 /* Index 780 - 789 */ 275 59000, 59400, 59800, 60200, 60600, 61000, 61400, 61800, 62200, 62600, 276 /* Index 790 - 799 */ 277 63000, 63400, 63800, 64200, 64600, 65000, 65400, 65800, 66200, 66600, 278 /* Index 800 - 809 */ 279 67000, 67400, 67800, 68200, 68600, 69000, 69400, 69800, 70200, 70600, 280 /* Index 810 - 819 */ 281 71000, 71500, 72100, 72600, 73000, 73400, 73800, 74200, 74600, 75000, 282 /* Index 820 - 829 */ 283 75400, 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, 284 /* Index 830 - 839 */ 285 79400, 79800, 80200, 80600, 81000, 81400, 81800, 82200, 82600, 83000, 286 /* Index 840 - 849 */ 287 83400, 83800, 84200, 84600, 85000, 85400, 85800, 86200, 86600, 87000, 288 /* Index 850 - 859 */ 289 87400, 87800, 88200, 88600, 89000, 89400, 89800, 90200, 90600, 91000, 290 /* Index 860 - 869 */ 291 91400, 91800, 92200, 92600, 93000, 93400, 93800, 94200, 94600, 95000, 292 /* Index 870 - 879 */ 293 95400, 95800, 96200, 96600, 97000, 97500, 98100, 98600, 99000, 99400, 294 /* Index 880 - 889 */ 295 99800, 100200, 100600, 101000, 101400, 101800, 102200, 102600, 103000, 296 103400, 297 /* Index 890 - 899 */ 298 103800, 104200, 104600, 105000, 105400, 105800, 106200, 106600, 107000, 299 107400, 300 /* Index 900 - 909 */ 301 107800, 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000, 302 111400, 303 /* Index 910 - 919 */ 304 111800, 112200, 112600, 113000, 113400, 113800, 114200, 114600, 115000, 305 115400, 306 /* Index 920 - 929 */ 307 115800, 116200, 116600, 117000, 117400, 117800, 118200, 118600, 119000, 308 119400, 309 /* Index 930 - 939 */ 310 119800, 120200, 120600, 121000, 121400, 121800, 122400, 122600, 123000, 311 123400, 312 /* Index 940 - 945 */ 313 123800, 1242000, 124600, 124900, 125000, 125000, 314 }; 315 316 /* OMAP54xx ES2.0 data */ 317 const struct ti_bandgap_data omap5430_data = { 318 .features = TI_BANDGAP_FEATURE_TSHUT_CONFIG | 319 TI_BANDGAP_FEATURE_FREEZE_BIT | 320 TI_BANDGAP_FEATURE_TALERT | 321 TI_BANDGAP_FEATURE_COUNTER_DELAY | 322 TI_BANDGAP_FEATURE_HISTORY_BUFFER | 323 TI_BANDGAP_FEATURE_ERRATA_813, 324 .fclock_name = "l3instr_ts_gclk_div", 325 .div_ck_name = "l3instr_ts_gclk_div", 326 .conv_table = omap5430_adc_to_temp, 327 .adc_start_val = OMAP5430_ADC_START_VALUE, 328 .adc_end_val = OMAP5430_ADC_END_VALUE, 329 .expose_sensor = ti_thermal_expose_sensor, 330 .remove_sensor = ti_thermal_remove_sensor, 331 .report_temperature = ti_thermal_report_sensor_temperature, 332 .sensors = { 333 { 334 .registers = &omap5430_mpu_temp_sensor_registers, 335 .ts_data = &omap5430_mpu_temp_sensor_data, 336 .domain = "cpu", 337 .register_cooling = ti_thermal_register_cpu_cooling, 338 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 339 .slope = OMAP_GRADIENT_SLOPE_5430_CPU, 340 .constant = OMAP_GRADIENT_CONST_5430_CPU, 341 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_CPU, 342 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_CPU, 343 }, 344 { 345 .registers = &omap5430_gpu_temp_sensor_registers, 346 .ts_data = &omap5430_gpu_temp_sensor_data, 347 .domain = "gpu", 348 .slope = OMAP_GRADIENT_SLOPE_5430_GPU, 349 .constant = OMAP_GRADIENT_CONST_5430_GPU, 350 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_5430_GPU, 351 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_5430_GPU, 352 }, 353 { 354 .registers = &omap5430_core_temp_sensor_registers, 355 .ts_data = &omap5430_core_temp_sensor_data, 356 .domain = "core", 357 }, 358 }, 359 .sensor_count = 3, 360 }; 361