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 530 to 923 50 */ 51 static const int 52 omap4430_adc_to_temp[OMAP4430_ADC_END_VALUE - OMAP4430_ADC_START_VALUE + 1] = { 53 -38000, -35000, -34000, -32000, -30000, -28000, -26000, -24000, -22000, 54 -20000, -18000, -17000, -15000, -13000, -12000, -10000, -8000, -6000, 55 -5000, -3000, -1000, 0, 2000, 3000, 5000, 6000, 8000, 10000, 12000, 56 13000, 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28000, 30000, 57 32000, 33000, 35000, 37000, 38000, 40000, 42000, 43000, 45000, 47000, 58 48000, 50000, 52000, 53000, 55000, 57000, 58000, 60000, 62000, 64000, 59 66000, 68000, 70000, 71000, 73000, 75000, 77000, 78000, 80000, 82000, 60 83000, 85000, 87000, 88000, 90000, 92000, 93000, 95000, 97000, 98000, 61 100000, 102000, 103000, 105000, 107000, 109000, 111000, 113000, 115000, 62 117000, 118000, 120000, 122000, 123000, 63 }; 64 65 /* OMAP4430 data */ 66 const struct ti_bandgap_data omap4430_data = { 67 .features = TI_BANDGAP_FEATURE_MODE_CONFIG | 68 TI_BANDGAP_FEATURE_CLK_CTRL | 69 TI_BANDGAP_FEATURE_POWER_SWITCH, 70 .fclock_name = "bandgap_fclk", 71 .div_ck_name = "bandgap_fclk", 72 .conv_table = omap4430_adc_to_temp, 73 .adc_start_val = OMAP4430_ADC_START_VALUE, 74 .adc_end_val = OMAP4430_ADC_END_VALUE, 75 .expose_sensor = ti_thermal_expose_sensor, 76 .remove_sensor = ti_thermal_remove_sensor, 77 .sensors = { 78 { 79 .registers = &omap4430_mpu_temp_sensor_registers, 80 .ts_data = &omap4430_mpu_temp_sensor_data, 81 .domain = "cpu", 82 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4430, 83 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4430, 84 .register_cooling = ti_thermal_register_cpu_cooling, 85 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 86 }, 87 }, 88 .sensor_count = 1, 89 }; 90 /* 91 * OMAP4460 has one instance of thermal sensor for MPU 92 * need to describe the individual bit fields 93 */ 94 static struct temp_sensor_registers 95 omap4460_mpu_temp_sensor_registers = { 96 .temp_sensor_ctrl = OMAP4460_TEMP_SENSOR_CTRL_OFFSET, 97 .bgap_tempsoff_mask = OMAP4460_BGAP_TEMPSOFF_MASK, 98 .bgap_soc_mask = OMAP4460_BGAP_TEMP_SENSOR_SOC_MASK, 99 .bgap_eocz_mask = OMAP4460_BGAP_TEMP_SENSOR_EOCZ_MASK, 100 .bgap_dtemp_mask = OMAP4460_BGAP_TEMP_SENSOR_DTEMP_MASK, 101 102 .bgap_mask_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 103 .mask_hot_mask = OMAP4460_MASK_HOT_MASK, 104 .mask_cold_mask = OMAP4460_MASK_COLD_MASK, 105 106 .bgap_mode_ctrl = OMAP4460_BGAP_CTRL_OFFSET, 107 .mode_ctrl_mask = OMAP4460_SINGLE_MODE_MASK, 108 109 .bgap_counter = OMAP4460_BGAP_COUNTER_OFFSET, 110 .counter_mask = OMAP4460_COUNTER_MASK, 111 112 .bgap_threshold = OMAP4460_BGAP_THRESHOLD_OFFSET, 113 .threshold_thot_mask = OMAP4460_T_HOT_MASK, 114 .threshold_tcold_mask = OMAP4460_T_COLD_MASK, 115 116 .tshut_threshold = OMAP4460_BGAP_TSHUT_OFFSET, 117 .tshut_hot_mask = OMAP4460_TSHUT_HOT_MASK, 118 .tshut_cold_mask = OMAP4460_TSHUT_COLD_MASK, 119 120 .bgap_status = OMAP4460_BGAP_STATUS_OFFSET, 121 .status_hot_mask = OMAP4460_HOT_FLAG_MASK, 122 .status_cold_mask = OMAP4460_COLD_FLAG_MASK, 123 124 .bgap_efuse = OMAP4460_FUSE_OPP_BGAP, 125 }; 126 127 /* Thresholds and limits for OMAP4460 MPU temperature sensor */ 128 static struct temp_sensor_data omap4460_mpu_temp_sensor_data = { 129 .tshut_hot = OMAP4460_TSHUT_HOT, 130 .tshut_cold = OMAP4460_TSHUT_COLD, 131 .t_hot = OMAP4460_T_HOT, 132 .t_cold = OMAP4460_T_COLD, 133 .min_freq = OMAP4460_MIN_FREQ, 134 .max_freq = OMAP4460_MAX_FREQ, 135 }; 136 137 /* 138 * Temperature values in milli degree celsius 139 * ADC code values from 530 to 923 140 */ 141 static const int 142 omap4460_adc_to_temp[OMAP4460_ADC_END_VALUE - OMAP4460_ADC_START_VALUE + 1] = { 143 -40000, -40000, -40000, -40000, -39800, -39400, -39000, -38600, -38200, 144 -37800, -37300, -36800, -36400, -36000, -35600, -35200, -34800, 145 -34300, -33800, -33400, -33000, -32600, -32200, -31800, -31300, 146 -30800, -30400, -30000, -29600, -29200, -28700, -28200, -27800, 147 -27400, -27000, -26600, -26200, -25700, -25200, -24800, -24400, 148 -24000, -23600, -23200, -22700, -22200, -21800, -21400, -21000, 149 -20600, -20200, -19700, -19200, -18800, -18400, -18000, -17600, 150 -17200, -16700, -16200, -15800, -15400, -15000, -14600, -14200, 151 -13700, -13200, -12800, -12400, -12000, -11600, -11200, -10700, 152 -10200, -9800, -9400, -9000, -8600, -8200, -7700, -7200, -6800, 153 -6400, -6000, -5600, -5200, -4800, -4300, -3800, -3400, -3000, 154 -2600, -2200, -1800, -1300, -800, -400, 0, 400, 800, 1200, 1600, 155 2100, 2600, 3000, 3400, 3800, 4200, 4600, 5100, 5600, 6000, 6400, 156 6800, 7200, 7600, 8000, 8500, 9000, 9400, 9800, 10200, 10600, 11000, 157 11400, 11900, 12400, 12800, 13200, 13600, 14000, 14400, 14800, 158 15300, 15800, 16200, 16600, 17000, 17400, 17800, 18200, 18700, 159 19200, 19600, 20000, 20400, 20800, 21200, 21600, 22100, 22600, 160 23000, 23400, 23800, 24200, 24600, 25000, 25400, 25900, 26400, 161 26800, 27200, 27600, 28000, 28400, 28800, 29300, 29800, 30200, 162 30600, 31000, 31400, 31800, 32200, 32600, 33100, 33600, 34000, 163 34400, 34800, 35200, 35600, 36000, 36400, 36800, 37300, 37800, 164 38200, 38600, 39000, 39400, 39800, 40200, 40600, 41100, 41600, 165 42000, 42400, 42800, 43200, 43600, 44000, 44400, 44800, 45300, 166 45800, 46200, 46600, 47000, 47400, 47800, 48200, 48600, 49000, 167 49500, 50000, 50400, 50800, 51200, 51600, 52000, 52400, 52800, 168 53200, 53700, 54200, 54600, 55000, 55400, 55800, 56200, 56600, 169 57000, 57400, 57800, 58200, 58700, 59200, 59600, 60000, 60400, 170 60800, 61200, 61600, 62000, 62400, 62800, 63300, 63800, 64200, 171 64600, 65000, 65400, 65800, 66200, 66600, 67000, 67400, 67800, 172 68200, 68700, 69200, 69600, 70000, 70400, 70800, 71200, 71600, 173 72000, 72400, 72800, 73200, 73600, 74100, 74600, 75000, 75400, 174 75800, 76200, 76600, 77000, 77400, 77800, 78200, 78600, 79000, 175 79400, 79800, 80300, 80800, 81200, 81600, 82000, 82400, 82800, 176 83200, 83600, 84000, 84400, 84800, 85200, 85600, 86000, 86400, 177 86800, 87300, 87800, 88200, 88600, 89000, 89400, 89800, 90200, 178 90600, 91000, 91400, 91800, 92200, 92600, 93000, 93400, 93800, 179 94200, 94600, 95000, 95500, 96000, 96400, 96800, 97200, 97600, 180 98000, 98400, 98800, 99200, 99600, 100000, 100400, 100800, 101200, 181 101600, 102000, 102400, 102800, 103200, 103600, 104000, 104400, 182 104800, 105200, 105600, 106100, 106600, 107000, 107400, 107800, 183 108200, 108600, 109000, 109400, 109800, 110200, 110600, 111000, 184 111400, 111800, 112200, 112600, 113000, 113400, 113800, 114200, 185 114600, 115000, 115400, 115800, 116200, 116600, 117000, 117400, 186 117800, 118200, 118600, 119000, 119400, 119800, 120200, 120600, 187 121000, 121400, 121800, 122200, 122600, 123000, 123400, 123800, 124200, 188 124600, 124900, 125000, 125000, 125000, 125000 189 }; 190 191 /* OMAP4460 data */ 192 const struct ti_bandgap_data omap4460_data = { 193 .features = TI_BANDGAP_FEATURE_TSHUT | 194 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 195 TI_BANDGAP_FEATURE_TALERT | 196 TI_BANDGAP_FEATURE_MODE_CONFIG | 197 TI_BANDGAP_FEATURE_POWER_SWITCH | 198 TI_BANDGAP_FEATURE_CLK_CTRL | 199 TI_BANDGAP_FEATURE_COUNTER, 200 .fclock_name = "bandgap_ts_fclk", 201 .div_ck_name = "div_ts_ck", 202 .conv_table = omap4460_adc_to_temp, 203 .adc_start_val = OMAP4460_ADC_START_VALUE, 204 .adc_end_val = OMAP4460_ADC_END_VALUE, 205 .expose_sensor = ti_thermal_expose_sensor, 206 .remove_sensor = ti_thermal_remove_sensor, 207 .report_temperature = ti_thermal_report_sensor_temperature, 208 .sensors = { 209 { 210 .registers = &omap4460_mpu_temp_sensor_registers, 211 .ts_data = &omap4460_mpu_temp_sensor_data, 212 .domain = "cpu", 213 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460, 214 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460, 215 .register_cooling = ti_thermal_register_cpu_cooling, 216 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 217 }, 218 }, 219 .sensor_count = 1, 220 }; 221 222 /* OMAP4470 data */ 223 const struct ti_bandgap_data omap4470_data = { 224 .features = TI_BANDGAP_FEATURE_TSHUT | 225 TI_BANDGAP_FEATURE_TSHUT_CONFIG | 226 TI_BANDGAP_FEATURE_TALERT | 227 TI_BANDGAP_FEATURE_MODE_CONFIG | 228 TI_BANDGAP_FEATURE_POWER_SWITCH | 229 TI_BANDGAP_FEATURE_CLK_CTRL | 230 TI_BANDGAP_FEATURE_COUNTER, 231 .fclock_name = "bandgap_ts_fclk", 232 .div_ck_name = "div_ts_ck", 233 .conv_table = omap4460_adc_to_temp, 234 .adc_start_val = OMAP4460_ADC_START_VALUE, 235 .adc_end_val = OMAP4460_ADC_END_VALUE, 236 .expose_sensor = ti_thermal_expose_sensor, 237 .remove_sensor = ti_thermal_remove_sensor, 238 .report_temperature = ti_thermal_report_sensor_temperature, 239 .sensors = { 240 { 241 .registers = &omap4460_mpu_temp_sensor_registers, 242 .ts_data = &omap4460_mpu_temp_sensor_data, 243 .domain = "cpu", 244 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470, 245 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470, 246 .register_cooling = ti_thermal_register_cpu_cooling, 247 .unregister_cooling = ti_thermal_unregister_cpu_cooling, 248 }, 249 }, 250 .sensor_count = 1, 251 }; 252