drivers/staging/omap-thermal/omap4-thermal.c

   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 "omap-thermal.h"
  20 #include "omap-bandgap.h"
  21
  22 /*
  23  * OMAP4430 has one instance of thermal sensor for MPU
  24  * need to describe the individual bit fields
  25  */
  26 static struct temp_sensor_registers
  27 omap4430_mpu_temp_sensor_registers = {
  28         .temp_sensor_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET,
  29         .bgap_tempsoff_mask = OMAP4430_BGAP_TEMPSOFF_MASK,
  30         .bgap_soc_mask = OMAP4430_BGAP_TEMP_SENSOR_SOC_MASK,
  31         .bgap_eocz_mask = OMAP4430_BGAP_TEMP_SENSOR_EOCZ_MASK,
  32         .bgap_dtemp_mask = OMAP4430_BGAP_TEMP_SENSOR_DTEMP_MASK,
  33
  34         .bgap_mode_ctrl = OMAP4430_TEMP_SENSOR_CTRL_OFFSET,
  35         .mode_ctrl_mask = OMAP4430_SINGLE_MODE_MASK,
  36
  37         .bgap_efuse = OMAP4430_FUSE_OPP_BGAP,
  38 };
  39
  40 /* Thresholds and limits for OMAP4430 MPU temperature sensor */
  41 static struct temp_sensor_data omap4430_mpu_temp_sensor_data = {
  42         .min_freq = OMAP4430_MIN_FREQ,
  43         .max_freq = OMAP4430_MAX_FREQ,
  44         .max_temp = OMAP4430_MAX_TEMP,
  45         .min_temp = OMAP4430_MIN_TEMP,
  46         .hyst_val = OMAP4430_HYST_VAL,
  47         .adc_start_val = OMAP4430_ADC_START_VALUE,
  48         .adc_end_val = OMAP4430_ADC_END_VALUE,
  49 };
  50
  51 /*
  52  * Temperature values in milli degree celsius
  53  * ADC code values from 530 to 923
  54  */
  55 static const int
  56 omap4430_adc_to_temp[OMAP4430_ADC_END_VALUE - OMAP4430_ADC_START_VALUE + 1] = {
  57         -38000, -35000, -34000, -32000, -30000, -28000, -26000, -24000, -22000,
  58         -20000, -18000, -17000, -15000, -13000, -12000, -10000, -8000, -6000,
  59         -5000, -3000, -1000, 0, 2000, 3000, 5000, 6000, 8000, 10000, 12000,
  60         13000, 15000, 17000, 19000, 21000, 23000, 25000, 27000, 28000, 30000,
  61         32000, 33000, 35000, 37000, 38000, 40000, 42000, 43000, 45000, 47000,
  62         48000, 50000, 52000, 53000, 55000, 57000, 58000, 60000, 62000, 64000,
  63         66000, 68000, 70000, 71000, 73000, 75000, 77000, 78000, 80000, 82000,
  64         83000, 85000, 87000, 88000, 90000, 92000, 93000, 95000, 97000, 98000,
  65         100000, 102000, 103000, 105000, 107000, 109000, 111000, 113000, 115000,
  66         117000, 118000, 120000, 122000, 123000,
  67 };
  68
  69 /* OMAP4430 data */
  70 const struct omap_bandgap_data omap4430_data = {
  71         .features = OMAP_BANDGAP_FEATURE_MODE_CONFIG |
  72                         OMAP_BANDGAP_FEATURE_POWER_SWITCH,
  73         .fclock_name = "bandgap_fclk",
  74         .div_ck_name = "bandgap_fclk",
  75         .conv_table = omap4430_adc_to_temp,
  76         .expose_sensor = omap_thermal_expose_sensor,
  77         .remove_sensor = omap_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 = 0,
  84                 .constant = 20000,
  85                 .slope_pcb = 0,
  86                 .constant_pcb = 20000,
  87                 .register_cooling = omap_thermal_register_cpu_cooling,
  88                 .unregister_cooling = omap_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         .adc_start_val = OMAP4460_ADC_START_VALUE,
 144         .adc_end_val = OMAP4460_ADC_END_VALUE,
 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 omap_bandgap_data omap4460_data = {
 205         .features = OMAP_BANDGAP_FEATURE_TSHUT |
 206                         OMAP_BANDGAP_FEATURE_TSHUT_CONFIG |
 207                         OMAP_BANDGAP_FEATURE_TALERT |
 208                         OMAP_BANDGAP_FEATURE_MODE_CONFIG |
 209                         OMAP_BANDGAP_FEATURE_POWER_SWITCH |
 210                         OMAP_BANDGAP_FEATURE_COUNTER,
 211         .fclock_name = "bandgap_ts_fclk",
 212         .div_ck_name = "div_ts_ck",
 213         .conv_table = omap4460_adc_to_temp,
 214         .expose_sensor = omap_thermal_expose_sensor,
 215         .remove_sensor = omap_thermal_remove_sensor,
 216         .sensors = {
 217                 {
 218                 .registers = &omap4460_mpu_temp_sensor_registers,
 219                 .ts_data = &omap4460_mpu_temp_sensor_data,
 220                 .domain = "cpu",
 221                 .slope = OMAP_GRADIENT_SLOPE_4460,
 222                 .constant = OMAP_GRADIENT_CONST_4460,
 223                 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4460,
 224                 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4460,
 225                 .register_cooling = omap_thermal_register_cpu_cooling,
 226                 .unregister_cooling = omap_thermal_unregister_cpu_cooling,
 227                 },
 228         },
 229         .sensor_count = 1,
 230 };
 231
 232 /* OMAP4470 data */
 233 const struct omap_bandgap_data omap4470_data = {
 234         .features = OMAP_BANDGAP_FEATURE_TSHUT |
 235                         OMAP_BANDGAP_FEATURE_TSHUT_CONFIG |
 236                         OMAP_BANDGAP_FEATURE_TALERT |
 237                         OMAP_BANDGAP_FEATURE_MODE_CONFIG |
 238                         OMAP_BANDGAP_FEATURE_POWER_SWITCH |
 239                         OMAP_BANDGAP_FEATURE_COUNTER,
 240         .fclock_name = "bandgap_ts_fclk",
 241         .div_ck_name = "div_ts_ck",
 242         .conv_table = omap4460_adc_to_temp,
 243         .expose_sensor = omap_thermal_expose_sensor,
 244         .remove_sensor = omap_thermal_remove_sensor,
 245         .sensors = {
 246                 {
 247                 .registers = &omap4460_mpu_temp_sensor_registers,
 248                 .ts_data = &omap4460_mpu_temp_sensor_data,
 249                 .domain = "cpu",
 250                 .slope = OMAP_GRADIENT_SLOPE_4470,
 251                 .constant = OMAP_GRADIENT_CONST_4470,
 252                 .slope_pcb = OMAP_GRADIENT_SLOPE_W_PCB_4470,
 253                 .constant_pcb = OMAP_GRADIENT_CONST_W_PCB_4470,
 254                 .register_cooling = omap_thermal_register_cpu_cooling,
 255                 .unregister_cooling = omap_thermal_unregister_cpu_cooling,
 256                 },
 257         },
 258         .sensor_count = 1,
 259 };