1 /* 2 * OMAP4 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 "omap4xxx-bandgap.h" 22 23 /* 24 * OMAP4430 has one instance of thermal sensor for MPU 25 * need to describe the individual bit fields 26 */ 27 static struct temp_sensor_registers 28 omap4430_mpu_temp_sensor_registers = { 29 .temp_sensor_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET, 30 .bgap_tempsoff_mask = OMAP4430_BGAP_TEMPSOFF_MASK, 31 .bgap_soc_mask = OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK, 32 .bgap_eocz_mask = OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK, 33 .bgap_dtemp_mask = OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK, 34 35 .bgap_mode_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET, 36 .mode_ctrl_mask = OMAP4430_SINGLE_MODE_MASK, 37 38 .bgap_efuse = OMAP4430_FUSE_OPP_BGAP, 39 }; 40 41 /* Thresholds and limits for OMAP4430 MPU temperature sensor */ 42 static struct temp_sensor_data omap4430_mpu_temp_sensor_data = { 43 .min_freq = OMAP4430_MIN_FREQ, 44 .max_freq = OMAP4430_MAX_FREQ, 45 .max_temp = OMAP4430_MAX_TEMP, 46 .min_temp = OMAP4430_MIN_TEMP, 47 .hyst_val = OMAP4430_HYST_VAL, 48 }; 49 50 /* 51 * Temperature values in milli degree celsius 52 * ADC code values from 13 to 107, see TRM 53 * "18.4.10.2.3 ADC Codes Versus Temperature". 54 */ 55 static const int 56 omap4430_adc_to_temp[OMAP4430_ADC_END_VALUE - OMAP4430_ADC_START_VALUE + 1] = { 57 -40000, -38000, -35000, -34000, -32000, -30000, -28000, -26000, -24000, 58 -22000, -20000, -18500, -17000, -15000, -13500, -12000, -10000, -8000, 59 -6500, -5000, -3500, -1500, 0, 2000, 3500, 5000, 6500, 8500, 10000, 60 12000, 13500, 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28500, 61 30000, 32000, 33500, 35000, 37000, 38500, 40000, 42000, 43500, 45000, 62 47000, 48500, 50000, 52000, 53500, 55000, 57000, 58500, 60000, 62000, 63 64000, 66000, 68000, 70000, 71500, 73500, 75000, 77000, 78500, 80000, 64 82000, 83500, 85000, 87000, 88500, 90000, 92000, 93500, 95000, 97000, 65 98500, 100000, 102000, 103500, 105000, 107000, 109000, 111000, 113000, 66 115000, 117000, 118500, 120000, 122000, 123500, 125000, 67 }; 68 69 /* OMAP4430 data */ 70 const struct ti_bandgap_data omap4430_data = { 71 .features = TI_BANDGAP_FEATURE_MODE_CONFIG | 72 TI_BANDGAP_FEATURE_CLK_CTRL | 73 TI_BANDGAP_FEATURE_POWER_SWITCH, 74 .fclock_name = "bandgap_fclk", 75 .div_ck_name = "bandgap_fclk", 76 .conv_table = omap4430_adc_to_temp, 77 .adc_start_val = OMAP4430_ADC_START_VALUE, 78 .adc_end_val = OMAP4430_ADC_END_VALUE, 79 .expose_sensor = ti_thermal_expose_sensor, 80 .remove_sensor = ti_thermal_remove_sensor, 81 .sensors = { 82 { 83 .registers = &omap4430_mpu_temp_sensor_registers, 84 .ts_data = &omap4430_mpu_temp_sensor_data, 85 .domain = "cpu", 86 .slope = OMAP_GRADIENT_SLOPE_4430, 87 .constant = OMAP_GRADIENT_CONST_4430, 88 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4430, 89 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4430, 90 .register_cooling = ti_thermal_register_cpu_cooling, 91 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 92 }, 93 }, 94 .sensor_count = 1, 95 }; 96 /* 97 * OMAP4460 has one instance of thermal sensor for MPU 98 * need to describe the individual bit fields 99 */ 100 static struct temp_sensor_registers 101 omap4460_mpu_temp_sensor_registers = { 102 .temp_sensor_ctrl = OMAP4460_TEMP_SENSOR_CTRL_OFFSET, 103 .bgap_tempsoff_mask = OMAP4460_BGAP_TEMPSOFF_MASK, 104 .bgap_soc_mask = OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK, 105 .bgap_eocz_mask = OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK, 106 .bgap_dtemp_mask = OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK, 107 108 .bgap_mask_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 109 .mask_hot_mask = OMAP4460_MASK_HOT_MASK, 110 .mask_cold_mask = OMAP4460_MASK_COLD_MASK, 111 112 .bgap_mode_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 113 .mode_ctrl_mask = OMAP4460_SINGLE_MODE_MASK, 114 115 .bgap_counter = OMAP4460_BGAP_COUNTER_OFFSET, 116 .counter_mask = OMAP4460_COUNTER_MASK, 117 118 .bgap_threshold = OMAP4460_BGAP_THRESHOLD_OFFSET, 119 .threshold_thot_mask = OMAP4460_T_HOT_MASK, 120 .threshold_tcold_mask = OMAP4460_T_COLD_MASK, 121 122 .tshut_threshold = OMAP4460_BGAP_TSHUT_OFFSET, 123 .tshut_hot_mask = OMAP4460_TSHUT_HOT_MASK, 124 .tshut_cold_mask = OMAP4460_TSHUT_COLD_MASK, 125 126 .bgap_status = OMAP4460_BGAP_STATUS_OFFSET, 127 .status_clean_stop_mask = OMAP4460_CLEAN_STOP_MASK, 128 .status_bgap_alert_mask = OMAP4460_BGAP_ALERT_MASK, 129 .status_hot_mask = OMAP4460_HOT_FLAG_MASK, 130 .status_cold_mask = OMAP4460_COLD_FLAG_MASK, 131 132 .bgap_efuse = OMAP4460_FUSE_OPP_BGAP, 133 }; 134 135 /* Thresholds and limits for OMAP4460 MPU temperature sensor */ 136 static struct temp_sensor_data omap4460_mpu_temp_sensor_data = { 137 .tshut_hot = OMAP4460_TSHUT_HOT, 138 .tshut_cold = OMAP4460_TSHUT_COLD, 139 .t_hot = OMAP4460_T_HOT, 140 .t_cold = OMAP4460_T_COLD, 141 .min_freq = OMAP4460_MIN_FREQ, 142 .max_freq = OMAP4460_MAX_FREQ, 143 .max_temp = OMAP4460_MAX_TEMP, 144 .min_temp = OMAP4460_MIN_TEMP, 145 .hyst_val = OMAP4460_HYST_VAL, 146 .update_int1 = 1000, 147 .update_int2 = 2000, 148 }; 149 150 /* 151 * Temperature values in milli degree celsius 152 * ADC code values from 530 to 923 153 */ 154 static const int 155 omap4460_adc_to_temp[OMAP4460_ADC_END_VALUE - OMAP4460_ADC_START_VALUE + 1] = { 156 -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200, 157 -37800, -37300, -36800, -36400, -36000, -35600, -35200, -34800, 158 -34300, -33800, -33400, -33000, -32600, -32200, -31800, -31300, 159 -30800, -30400, -30000, -29600, -29200, -28700, -28200, -27800, 160 -27400, -27000, -26600, -26200, -25700, -25200, -24800, -24400, 161 -24000, -23600, -23200, -22700, -22200, -21800, -21400, -21000, 162 -20600, -20200, -19700, -19200, -18800, -18400, -18000, -17600, 163 -17200, -16700, -16200, -15800, -15400, -15000, -14600, -14200, 164 -13700, -13200, -12800, -12400, -12000, -11600, -11200, -10700, 165 -10200, -9800, -9400, -9000, -8600, -8200, -7700, -7200, -6800, 166 -6400, -6000, -5600, -5200, -4800, -4300, -3800, -3400, -3000, 167 -2600, -2200, -1800, -1300, -800, -400, 0, 400, 800, 1200, 1600, 168 2100, 2600, 3000, 3400, 3800, 4200, 4600, 5100, 5600, 6000, 6400, 169 6800, 7200, 7600, 8000, 8500, 9000, 9400, 9800, 10200, 10600, 11000, 170 11400, 11900, 12400, 12800, 13200, 13600, 14000, 14400, 14800, 171 15300, 15800, 16200, 16600, 17000, 17400, 17800, 18200, 18700, 172 19200, 19600, 20000, 20400, 20800, 21200, 21600, 22100, 22600, 173 23000, 23400, 23800, 24200, 24600, 25000, 25400, 25900, 26400, 174 26800, 27200, 27600, 28000, 28400, 28800, 29300, 29800, 30200, 175 30600, 31000, 31400, 31800, 32200, 32600, 33100, 33600, 34000, 176 34400, 34800, 35200, 35600, 36000, 36400, 36800, 37300, 37800, 177 38200, 38600, 39000, 39400, 39800, 40200, 40600, 41100, 41600, 178 42000, 42400, 42800, 43200, 43600, 44000, 44400, 44800, 45300, 179 45800, 46200, 46600, 47000, 47400, 47800, 48200, 48600, 49000, 180 49500, 50000, 50400, 50800, 51200, 51600, 52000, 52400, 52800, 181 53200, 53700, 54200, 54600, 55000, 55400, 55800, 56200, 56600, 182 57000, 57400, 57800, 58200, 58700, 59200, 59600, 60000, 60400, 183 60800, 61200, 61600, 62000, 62400, 62800, 63300, 63800, 64200, 184 64600, 65000, 65400, 65800, 66200, 66600, 67000, 67400, 67800, 185 68200, 68700, 69200, 69600, 70000, 70400, 70800, 71200, 71600, 186 72000, 72400, 72800, 73200, 73600, 74100, 74600, 75000, 75400, 187 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, 188 79400, 79800, 80300, 80800, 81200, 81600, 82000, 82400, 82800, 189 83200, 83600, 84000, 84400, 84800, 85200, 85600, 86000, 86400, 190 86800, 87300, 87800, 88200, 88600, 89000, 89400, 89800, 90200, 191 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400, 93800, 192 94200, 94600, 95000, 95500, 96000, 96400, 96800, 97200, 97600, 193 98000, 98400, 98800, 99200, 99600, 100000, 100400, 100800, 101200, 194 101600, 102000, 102400, 102800, 103200, 103600, 104000, 104400, 195 104800, 105200, 105600, 106100, 106600, 107000, 107400, 107800, 196 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000, 197 111400, 111800, 112200, 112600, 113000, 113400, 113800, 114200, 198 114600, 115000, 115400, 115800, 116200, 116600, 117000, 117400, 199 117800, 118200, 118600, 119000, 119400, 119800, 120200, 120600, 200 121000, 121400, 121800, 122200, 122600, 123000, 123400, 123800, 124200, 201 124600, 124900, 125000, 125000, 125000, 125000 202 }; 203 204 /* OMAP4460 data */ 205 const struct ti_bandgap_data omap4460_data = { 206 .features = TI_BANDGAP_FEATURE_TSHUT | 207 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 208 TI_BANDGAP_FEATURE_TALERT | 209 TI_BANDGAP_FEATURE_MODE_CONFIG | 210 TI_BANDGAP_FEATURE_POWER_SWITCH | 211 TI_BANDGAP_FEATURE_CLK_CTRL | 212 TI_BANDGAP_FEATURE_COUNTER, 213 .fclock_name = "bandgap_ts_fclk", 214 .div_ck_name = "div_ts_ck", 215 .conv_table = omap4460_adc_to_temp, 216 .adc_start_val = OMAP4460_ADC_START_VALUE, 217 .adc_end_val = OMAP4460_ADC_END_VALUE, 218 .expose_sensor = ti_thermal_expose_sensor, 219 .remove_sensor = ti_thermal_remove_sensor, 220 .report_temperature = ti_thermal_report_sensor_temperature, 221 .sensors = { 222 { 223 .registers = &omap4460_mpu_temp_sensor_registers, 224 .ts_data = &omap4460_mpu_temp_sensor_data, 225 .domain = "cpu", 226 .slope = OMAP_GRADIENT_SLOPE_4460, 227 .constant = OMAP_GRADIENT_CONST_4460, 228 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460, 229 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460, 230 .register_cooling = ti_thermal_register_cpu_cooling, 231 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 232 }, 233 }, 234 .sensor_count = 1, 235 }; 236 237 /* OMAP4470 data */ 238 const struct ti_bandgap_data omap4470_data = { 239 .features = TI_BANDGAP_FEATURE_TSHUT | 240 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 241 TI_BANDGAP_FEATURE_TALERT | 242 TI_BANDGAP_FEATURE_MODE_CONFIG | 243 TI_BANDGAP_FEATURE_POWER_SWITCH | 244 TI_BANDGAP_FEATURE_CLK_CTRL | 245 TI_BANDGAP_FEATURE_COUNTER, 246 .fclock_name = "bandgap_ts_fclk", 247 .div_ck_name = "div_ts_ck", 248 .conv_table = omap4460_adc_to_temp, 249 .adc_start_val = OMAP4460_ADC_START_VALUE, 250 .adc_end_val = OMAP4460_ADC_END_VALUE, 251 .expose_sensor = ti_thermal_expose_sensor, 252 .remove_sensor = ti_thermal_remove_sensor, 253 .report_temperature = ti_thermal_report_sensor_temperature, 254 .sensors = { 255 { 256 .registers = &omap4460_mpu_temp_sensor_registers, 257 .ts_data = &omap4460_mpu_temp_sensor_data, 258 .domain = "cpu", 259 .slope = OMAP_GRADIENT_SLOPE_4470, 260 .constant = OMAP_GRADIENT_CONST_4470, 261 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470, 262 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470, 263 .register_cooling = ti_thermal_register_cpu_cooling, 264 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 265 }, 266 }, 267 .sensor_count = 1, 268 }; 269