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