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 530 to 923 53 */ 54 static const int 55 omap4430_adc_to_temp[OMAP4430_ADC_END_VALUE - OMAP4430_ADC_START_VALUE + 1] = { 56 -38000, -35000, -34000, -32000, -30000, -28000, -26000, -24000, -22000, 57 -20000, -18000, -17000, -15000, -13000, -12000, -10000, -8000, -6000, 58 -5000, -3000, -1000, 0, 2000, 3000, 5000, 6000, 8000, 10000, 12000, 59 13000, 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28000, 30000, 60 32000, 33000, 35000, 37000, 38000, 40000, 42000, 43000, 45000, 47000, 61 48000, 50000, 52000, 53000, 55000, 57000, 58000, 60000, 62000, 64000, 62 66000, 68000, 70000, 71000, 73000, 75000, 77000, 78000, 80000, 82000, 63 83000, 85000, 87000, 88000, 90000, 92000, 93000, 95000, 97000, 98000, 64 100000, 102000, 103000, 105000, 107000, 109000, 111000, 113000, 115000, 65 117000, 118000, 120000, 122000, 123000, 66 }; 67 68 /* OMAP4430 data */ 69 const struct ti_bandgap_data omap4430_data = { 70 .features = TI_BANDGAP_FEATURE_MODE_CONFIG | 71 TI_BANDGAP_FEATURE_CLK_CTRL | 72 TI_BANDGAP_FEATURE_POWER_SWITCH, 73 .fclock_name = "bandgap_fclk", 74 .div_ck_name = "bandgap_fclk", 75 .conv_table = omap4430_adc_to_temp, 76 .adc_start_val = OMAP4430_ADC_START_VALUE, 77 .adc_end_val = OMAP4430_ADC_END_VALUE, 78 .expose_sensor = ti_thermal_expose_sensor, 79 .remove_sensor = ti_thermal_remove_sensor, 80 .sensors = { 81 { 82 .registers = &omap4430_mpu_temp_sensor_registers, 83 .ts_data = &omap4430_mpu_temp_sensor_data, 84 .domain = "cpu", 85 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4430, 86 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4430, 87 .register_cooling = ti_thermal_register_cpu_cooling, 88 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 89 }, 90 }, 91 .sensor_count = 1, 92 }; 93 /* 94 * OMAP4460 has one instance of thermal sensor for MPU 95 * need to describe the individual bit fields 96 */ 97 static struct temp_sensor_registers 98 omap4460_mpu_temp_sensor_registers = { 99 .temp_sensor_ctrl = OMAP4460_TEMP_SENSOR_CTRL_OFFSET, 100 .bgap_tempsoff_mask = OMAP4460_BGAP_TEMPSOFF_MASK, 101 .bgap_soc_mask = OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK, 102 .bgap_eocz_mask = OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK, 103 .bgap_dtemp_mask = OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK, 104 105 .bgap_mask_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 106 .mask_hot_mask = OMAP4460_MASK_HOT_MASK, 107 .mask_cold_mask = OMAP4460_MASK_COLD_MASK, 108 109 .bgap_mode_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 110 .mode_ctrl_mask = OMAP4460_SINGLE_MODE_MASK, 111 112 .bgap_counter = OMAP4460_BGAP_COUNTER_OFFSET, 113 .counter_mask = OMAP4460_COUNTER_MASK, 114 115 .bgap_threshold = OMAP4460_BGAP_THRESHOLD_OFFSET, 116 .threshold_thot_mask = OMAP4460_T_HOT_MASK, 117 .threshold_tcold_mask = OMAP4460_T_COLD_MASK, 118 119 .tshut_threshold = OMAP4460_BGAP_TSHUT_OFFSET, 120 .tshut_hot_mask = OMAP4460_TSHUT_HOT_MASK, 121 .tshut_cold_mask = OMAP4460_TSHUT_COLD_MASK, 122 123 .bgap_status = OMAP4460_BGAP_STATUS_OFFSET, 124 .status_clean_stop_mask = OMAP4460_CLEAN_STOP_MASK, 125 .status_bgap_alert_mask = OMAP4460_BGAP_ALERT_MASK, 126 .status_hot_mask = OMAP4460_HOT_FLAG_MASK, 127 .status_cold_mask = OMAP4460_COLD_FLAG_MASK, 128 129 .bgap_efuse = OMAP4460_FUSE_OPP_BGAP, 130 }; 131 132 /* Thresholds and limits for OMAP4460 MPU temperature sensor */ 133 static struct temp_sensor_data omap4460_mpu_temp_sensor_data = { 134 .tshut_hot = OMAP4460_TSHUT_HOT, 135 .tshut_cold = OMAP4460_TSHUT_COLD, 136 .t_hot = OMAP4460_T_HOT, 137 .t_cold = OMAP4460_T_COLD, 138 .min_freq = OMAP4460_MIN_FREQ, 139 .max_freq = OMAP4460_MAX_FREQ, 140 .max_temp = OMAP4460_MAX_TEMP, 141 .min_temp = OMAP4460_MIN_TEMP, 142 .hyst_val = OMAP4460_HYST_VAL, 143 .update_int1 = 1000, 144 .update_int2 = 2000, 145 }; 146 147 /* 148 * Temperature values in milli degree celsius 149 * ADC code values from 530 to 923 150 */ 151 static const int 152 omap4460_adc_to_temp[OMAP4460_ADC_END_VALUE - OMAP4460_ADC_START_VALUE + 1] = { 153 -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200, 154 -37800, -37300, -36800, -36400, -36000, -35600, -35200, -34800, 155 -34300, -33800, -33400, -33000, -32600, -32200, -31800, -31300, 156 -30800, -30400, -30000, -29600, -29200, -28700, -28200, -27800, 157 -27400, -27000, -26600, -26200, -25700, -25200, -24800, -24400, 158 -24000, -23600, -23200, -22700, -22200, -21800, -21400, -21000, 159 -20600, -20200, -19700, -19200, -18800, -18400, -18000, -17600, 160 -17200, -16700, -16200, -15800, -15400, -15000, -14600, -14200, 161 -13700, -13200, -12800, -12400, -12000, -11600, -11200, -10700, 162 -10200, -9800, -9400, -9000, -8600, -8200, -7700, -7200, -6800, 163 -6400, -6000, -5600, -5200, -4800, -4300, -3800, -3400, -3000, 164 -2600, -2200, -1800, -1300, -800, -400, 0, 400, 800, 1200, 1600, 165 2100, 2600, 3000, 3400, 3800, 4200, 4600, 5100, 5600, 6000, 6400, 166 6800, 7200, 7600, 8000, 8500, 9000, 9400, 9800, 10200, 10600, 11000, 167 11400, 11900, 12400, 12800, 13200, 13600, 14000, 14400, 14800, 168 15300, 15800, 16200, 16600, 17000, 17400, 17800, 18200, 18700, 169 19200, 19600, 20000, 20400, 20800, 21200, 21600, 22100, 22600, 170 23000, 23400, 23800, 24200, 24600, 25000, 25400, 25900, 26400, 171 26800, 27200, 27600, 28000, 28400, 28800, 29300, 29800, 30200, 172 30600, 31000, 31400, 31800, 32200, 32600, 33100, 33600, 34000, 173 34400, 34800, 35200, 35600, 36000, 36400, 36800, 37300, 37800, 174 38200, 38600, 39000, 39400, 39800, 40200, 40600, 41100, 41600, 175 42000, 42400, 42800, 43200, 43600, 44000, 44400, 44800, 45300, 176 45800, 46200, 46600, 47000, 47400, 47800, 48200, 48600, 49000, 177 49500, 50000, 50400, 50800, 51200, 51600, 52000, 52400, 52800, 178 53200, 53700, 54200, 54600, 55000, 55400, 55800, 56200, 56600, 179 57000, 57400, 57800, 58200, 58700, 59200, 59600, 60000, 60400, 180 60800, 61200, 61600, 62000, 62400, 62800, 63300, 63800, 64200, 181 64600, 65000, 65400, 65800, 66200, 66600, 67000, 67400, 67800, 182 68200, 68700, 69200, 69600, 70000, 70400, 70800, 71200, 71600, 183 72000, 72400, 72800, 73200, 73600, 74100, 74600, 75000, 75400, 184 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, 185 79400, 79800, 80300, 80800, 81200, 81600, 82000, 82400, 82800, 186 83200, 83600, 84000, 84400, 84800, 85200, 85600, 86000, 86400, 187 86800, 87300, 87800, 88200, 88600, 89000, 89400, 89800, 90200, 188 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400, 93800, 189 94200, 94600, 95000, 95500, 96000, 96400, 96800, 97200, 97600, 190 98000, 98400, 98800, 99200, 99600, 100000, 100400, 100800, 101200, 191 101600, 102000, 102400, 102800, 103200, 103600, 104000, 104400, 192 104800, 105200, 105600, 106100, 106600, 107000, 107400, 107800, 193 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000, 194 111400, 111800, 112200, 112600, 113000, 113400, 113800, 114200, 195 114600, 115000, 115400, 115800, 116200, 116600, 117000, 117400, 196 117800, 118200, 118600, 119000, 119400, 119800, 120200, 120600, 197 121000, 121400, 121800, 122200, 122600, 123000, 123400, 123800, 124200, 198 124600, 124900, 125000, 125000, 125000, 125000 199 }; 200 201 /* OMAP4460 data */ 202 const struct ti_bandgap_data omap4460_data = { 203 .features = TI_BANDGAP_FEATURE_TSHUT | 204 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 205 TI_BANDGAP_FEATURE_TALERT | 206 TI_BANDGAP_FEATURE_MODE_CONFIG | 207 TI_BANDGAP_FEATURE_POWER_SWITCH | 208 TI_BANDGAP_FEATURE_CLK_CTRL | 209 TI_BANDGAP_FEATURE_COUNTER, 210 .fclock_name = "bandgap_ts_fclk", 211 .div_ck_name = "div_ts_ck", 212 .conv_table = omap4460_adc_to_temp, 213 .adc_start_val = OMAP4460_ADC_START_VALUE, 214 .adc_end_val = OMAP4460_ADC_END_VALUE, 215 .expose_sensor = ti_thermal_expose_sensor, 216 .remove_sensor = ti_thermal_remove_sensor, 217 .report_temperature = ti_thermal_report_sensor_temperature, 218 .sensors = { 219 { 220 .registers = &omap4460_mpu_temp_sensor_registers, 221 .ts_data = &omap4460_mpu_temp_sensor_data, 222 .domain = "cpu", 223 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460, 224 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460, 225 .register_cooling = ti_thermal_register_cpu_cooling, 226 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 227 }, 228 }, 229 .sensor_count = 1, 230 }; 231 232 /* OMAP4470 data */ 233 const struct ti_bandgap_data omap4470_data = { 234 .features = TI_BANDGAP_FEATURE_TSHUT | 235 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 236 TI_BANDGAP_FEATURE_TALERT | 237 TI_BANDGAP_FEATURE_MODE_CONFIG | 238 TI_BANDGAP_FEATURE_POWER_SWITCH | 239 TI_BANDGAP_FEATURE_CLK_CTRL | 240 TI_BANDGAP_FEATURE_COUNTER, 241 .fclock_name = "bandgap_ts_fclk", 242 .div_ck_name = "div_ts_ck", 243 .conv_table = omap4460_adc_to_temp, 244 .adc_start_val = OMAP4460_ADC_START_VALUE, 245 .adc_end_val = OMAP4460_ADC_END_VALUE, 246 .expose_sensor = ti_thermal_expose_sensor, 247 .remove_sensor = ti_thermal_remove_sensor, 248 .report_temperature = ti_thermal_report_sensor_temperature, 249 .sensors = { 250 { 251 .registers = &omap4460_mpu_temp_sensor_registers, 252 .ts_data = &omap4460_mpu_temp_sensor_data, 253 .domain = "cpu", 254 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470, 255 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470, 256 .register_cooling = ti_thermal_register_cpu_cooling, 257 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 258 }, 259 }, 260 .sensor_count = 1, 261 }; 262