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