1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2019, Linaro Limited 4 */ 5 6 #include <linux/bitops.h> 7 #include <linux/regmap.h> 8 #include <linux/delay.h> 9 #include <linux/slab.h> 10 #include "tsens.h" 11 12 /* ----- SROT ------ */ 13 #define SROT_HW_VER_OFF 0x0000 14 #define SROT_CTRL_OFF 0x0004 15 16 /* ----- TM ------ */ 17 #define TM_INT_EN_OFF 0x0000 18 #define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004 19 #define TM_Sn_STATUS_OFF 0x0044 20 #define TM_TRDY_OFF 0x0084 21 #define TM_HIGH_LOW_INT_STATUS_OFF 0x0088 22 #define TM_HIGH_LOW_Sn_INT_THRESHOLD_OFF 0x0090 23 24 /* eeprom layout data for msm8956/76 (v1) */ 25 #define MSM8976_BASE0_MASK 0xff 26 #define MSM8976_BASE1_MASK 0xff 27 #define MSM8976_BASE1_SHIFT 8 28 29 #define MSM8976_S0_P1_MASK 0x3f00 30 #define MSM8976_S1_P1_MASK 0x3f00000 31 #define MSM8976_S2_P1_MASK 0x3f 32 #define MSM8976_S3_P1_MASK 0x3f000 33 #define MSM8976_S4_P1_MASK 0x3f00 34 #define MSM8976_S5_P1_MASK 0x3f00000 35 #define MSM8976_S6_P1_MASK 0x3f 36 #define MSM8976_S7_P1_MASK 0x3f000 37 #define MSM8976_S8_P1_MASK 0x1f8 38 #define MSM8976_S9_P1_MASK 0x1f8000 39 #define MSM8976_S10_P1_MASK 0xf8000000 40 #define MSM8976_S10_P1_MASK_1 0x1 41 42 #define MSM8976_S0_P2_MASK 0xfc000 43 #define MSM8976_S1_P2_MASK 0xfc000000 44 #define MSM8976_S2_P2_MASK 0xfc0 45 #define MSM8976_S3_P2_MASK 0xfc0000 46 #define MSM8976_S4_P2_MASK 0xfc000 47 #define MSM8976_S5_P2_MASK 0xfc000000 48 #define MSM8976_S6_P2_MASK 0xfc0 49 #define MSM8976_S7_P2_MASK 0xfc0000 50 #define MSM8976_S8_P2_MASK 0x7e00 51 #define MSM8976_S9_P2_MASK 0x7e00000 52 #define MSM8976_S10_P2_MASK 0x7e 53 54 #define MSM8976_S0_P1_SHIFT 8 55 #define MSM8976_S1_P1_SHIFT 20 56 #define MSM8976_S2_P1_SHIFT 0 57 #define MSM8976_S3_P1_SHIFT 12 58 #define MSM8976_S4_P1_SHIFT 8 59 #define MSM8976_S5_P1_SHIFT 20 60 #define MSM8976_S6_P1_SHIFT 0 61 #define MSM8976_S7_P1_SHIFT 12 62 #define MSM8976_S8_P1_SHIFT 3 63 #define MSM8976_S9_P1_SHIFT 15 64 #define MSM8976_S10_P1_SHIFT 27 65 #define MSM8976_S10_P1_SHIFT_1 0 66 67 #define MSM8976_S0_P2_SHIFT 14 68 #define MSM8976_S1_P2_SHIFT 26 69 #define MSM8976_S2_P2_SHIFT 6 70 #define MSM8976_S3_P2_SHIFT 18 71 #define MSM8976_S4_P2_SHIFT 14 72 #define MSM8976_S5_P2_SHIFT 26 73 #define MSM8976_S6_P2_SHIFT 6 74 #define MSM8976_S7_P2_SHIFT 18 75 #define MSM8976_S8_P2_SHIFT 9 76 #define MSM8976_S9_P2_SHIFT 21 77 #define MSM8976_S10_P2_SHIFT 1 78 79 #define MSM8976_CAL_SEL_MASK 0x3 80 81 #define MSM8976_CAL_DEGC_PT1 30 82 #define MSM8976_CAL_DEGC_PT2 120 83 #define MSM8976_SLOPE_FACTOR 1000 84 #define MSM8976_SLOPE_DEFAULT 3200 85 86 /* eeprom layout data for qcs404/405 (v1) */ 87 #define BASE0_MASK 0x000007f8 88 #define BASE1_MASK 0x0007f800 89 #define BASE0_SHIFT 3 90 #define BASE1_SHIFT 11 91 92 #define S0_P1_MASK 0x0000003f 93 #define S1_P1_MASK 0x0003f000 94 #define S2_P1_MASK 0x3f000000 95 #define S3_P1_MASK 0x000003f0 96 #define S4_P1_MASK 0x003f0000 97 #define S5_P1_MASK 0x0000003f 98 #define S6_P1_MASK 0x0003f000 99 #define S7_P1_MASK 0x3f000000 100 #define S8_P1_MASK 0x000003f0 101 #define S9_P1_MASK 0x003f0000 102 103 #define S0_P2_MASK 0x00000fc0 104 #define S1_P2_MASK 0x00fc0000 105 #define S2_P2_MASK_1_0 0xc0000000 106 #define S2_P2_MASK_5_2 0x0000000f 107 #define S3_P2_MASK 0x0000fc00 108 #define S4_P2_MASK 0x0fc00000 109 #define S5_P2_MASK 0x00000fc0 110 #define S6_P2_MASK 0x00fc0000 111 #define S7_P2_MASK_1_0 0xc0000000 112 #define S7_P2_MASK_5_2 0x0000000f 113 #define S8_P2_MASK 0x0000fc00 114 #define S9_P2_MASK 0x0fc00000 115 116 #define S0_P1_SHIFT 0 117 #define S0_P2_SHIFT 6 118 #define S1_P1_SHIFT 12 119 #define S1_P2_SHIFT 18 120 #define S2_P1_SHIFT 24 121 #define S2_P2_SHIFT_1_0 30 122 123 #define S2_P2_SHIFT_5_2 0 124 #define S3_P1_SHIFT 4 125 #define S3_P2_SHIFT 10 126 #define S4_P1_SHIFT 16 127 #define S4_P2_SHIFT 22 128 129 #define S5_P1_SHIFT 0 130 #define S5_P2_SHIFT 6 131 #define S6_P1_SHIFT 12 132 #define S6_P2_SHIFT 18 133 #define S7_P1_SHIFT 24 134 #define S7_P2_SHIFT_1_0 30 135 136 #define S7_P2_SHIFT_5_2 0 137 #define S8_P1_SHIFT 4 138 #define S8_P2_SHIFT 10 139 #define S9_P1_SHIFT 16 140 #define S9_P2_SHIFT 22 141 142 #define CAL_SEL_MASK 7 143 #define CAL_SEL_SHIFT 0 144 145 static void compute_intercept_slope_8976(struct tsens_priv *priv, 146 u32 *p1, u32 *p2, u32 mode) 147 { 148 int i; 149 150 priv->sensor[0].slope = 3313; 151 priv->sensor[1].slope = 3275; 152 priv->sensor[2].slope = 3320; 153 priv->sensor[3].slope = 3246; 154 priv->sensor[4].slope = 3279; 155 priv->sensor[5].slope = 3257; 156 priv->sensor[6].slope = 3234; 157 priv->sensor[7].slope = 3269; 158 priv->sensor[8].slope = 3255; 159 priv->sensor[9].slope = 3239; 160 priv->sensor[10].slope = 3286; 161 162 for (i = 0; i < priv->num_sensors; i++) { 163 priv->sensor[i].offset = (p1[i] * MSM8976_SLOPE_FACTOR) - 164 (MSM8976_CAL_DEGC_PT1 * 165 priv->sensor[i].slope); 166 } 167 } 168 169 static int calibrate_v1(struct tsens_priv *priv) 170 { 171 u32 base0 = 0, base1 = 0; 172 u32 p1[10], p2[10]; 173 u32 mode = 0, lsb = 0, msb = 0; 174 u32 *qfprom_cdata; 175 int i; 176 177 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); 178 if (IS_ERR(qfprom_cdata)) 179 return PTR_ERR(qfprom_cdata); 180 181 mode = (qfprom_cdata[4] & CAL_SEL_MASK) >> CAL_SEL_SHIFT; 182 dev_dbg(priv->dev, "calibration mode is %d\n", mode); 183 184 switch (mode) { 185 case TWO_PT_CALIB: 186 base1 = (qfprom_cdata[4] & BASE1_MASK) >> BASE1_SHIFT; 187 p2[0] = (qfprom_cdata[0] & S0_P2_MASK) >> S0_P2_SHIFT; 188 p2[1] = (qfprom_cdata[0] & S1_P2_MASK) >> S1_P2_SHIFT; 189 /* This value is split over two registers, 2 bits and 4 bits */ 190 lsb = (qfprom_cdata[0] & S2_P2_MASK_1_0) >> S2_P2_SHIFT_1_0; 191 msb = (qfprom_cdata[1] & S2_P2_MASK_5_2) >> S2_P2_SHIFT_5_2; 192 p2[2] = msb << 2 | lsb; 193 p2[3] = (qfprom_cdata[1] & S3_P2_MASK) >> S3_P2_SHIFT; 194 p2[4] = (qfprom_cdata[1] & S4_P2_MASK) >> S4_P2_SHIFT; 195 p2[5] = (qfprom_cdata[2] & S5_P2_MASK) >> S5_P2_SHIFT; 196 p2[6] = (qfprom_cdata[2] & S6_P2_MASK) >> S6_P2_SHIFT; 197 /* This value is split over two registers, 2 bits and 4 bits */ 198 lsb = (qfprom_cdata[2] & S7_P2_MASK_1_0) >> S7_P2_SHIFT_1_0; 199 msb = (qfprom_cdata[3] & S7_P2_MASK_5_2) >> S7_P2_SHIFT_5_2; 200 p2[7] = msb << 2 | lsb; 201 p2[8] = (qfprom_cdata[3] & S8_P2_MASK) >> S8_P2_SHIFT; 202 p2[9] = (qfprom_cdata[3] & S9_P2_MASK) >> S9_P2_SHIFT; 203 for (i = 0; i < priv->num_sensors; i++) 204 p2[i] = ((base1 + p2[i]) << 2); 205 /* Fall through */ 206 case ONE_PT_CALIB2: 207 base0 = (qfprom_cdata[4] & BASE0_MASK) >> BASE0_SHIFT; 208 p1[0] = (qfprom_cdata[0] & S0_P1_MASK) >> S0_P1_SHIFT; 209 p1[1] = (qfprom_cdata[0] & S1_P1_MASK) >> S1_P1_SHIFT; 210 p1[2] = (qfprom_cdata[0] & S2_P1_MASK) >> S2_P1_SHIFT; 211 p1[3] = (qfprom_cdata[1] & S3_P1_MASK) >> S3_P1_SHIFT; 212 p1[4] = (qfprom_cdata[1] & S4_P1_MASK) >> S4_P1_SHIFT; 213 p1[5] = (qfprom_cdata[2] & S5_P1_MASK) >> S5_P1_SHIFT; 214 p1[6] = (qfprom_cdata[2] & S6_P1_MASK) >> S6_P1_SHIFT; 215 p1[7] = (qfprom_cdata[2] & S7_P1_MASK) >> S7_P1_SHIFT; 216 p1[8] = (qfprom_cdata[3] & S8_P1_MASK) >> S8_P1_SHIFT; 217 p1[9] = (qfprom_cdata[3] & S9_P1_MASK) >> S9_P1_SHIFT; 218 for (i = 0; i < priv->num_sensors; i++) 219 p1[i] = (((base0) + p1[i]) << 2); 220 break; 221 default: 222 for (i = 0; i < priv->num_sensors; i++) { 223 p1[i] = 500; 224 p2[i] = 780; 225 } 226 break; 227 } 228 229 compute_intercept_slope(priv, p1, p2, mode); 230 kfree(qfprom_cdata); 231 232 return 0; 233 } 234 235 static int calibrate_8976(struct tsens_priv *priv) 236 { 237 int base0 = 0, base1 = 0, i; 238 u32 p1[11], p2[11]; 239 int mode = 0, tmp = 0; 240 u32 *qfprom_cdata; 241 242 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); 243 if (IS_ERR(qfprom_cdata)) 244 return PTR_ERR(qfprom_cdata); 245 246 mode = (qfprom_cdata[4] & MSM8976_CAL_SEL_MASK); 247 dev_dbg(priv->dev, "calibration mode is %d\n", mode); 248 249 switch (mode) { 250 case TWO_PT_CALIB: 251 base1 = (qfprom_cdata[2] & MSM8976_BASE1_MASK) >> MSM8976_BASE1_SHIFT; 252 p2[0] = (qfprom_cdata[0] & MSM8976_S0_P2_MASK) >> MSM8976_S0_P2_SHIFT; 253 p2[1] = (qfprom_cdata[0] & MSM8976_S1_P2_MASK) >> MSM8976_S1_P2_SHIFT; 254 p2[2] = (qfprom_cdata[1] & MSM8976_S2_P2_MASK) >> MSM8976_S2_P2_SHIFT; 255 p2[3] = (qfprom_cdata[1] & MSM8976_S3_P2_MASK) >> MSM8976_S3_P2_SHIFT; 256 p2[4] = (qfprom_cdata[2] & MSM8976_S4_P2_MASK) >> MSM8976_S4_P2_SHIFT; 257 p2[5] = (qfprom_cdata[2] & MSM8976_S5_P2_MASK) >> MSM8976_S5_P2_SHIFT; 258 p2[6] = (qfprom_cdata[3] & MSM8976_S6_P2_MASK) >> MSM8976_S6_P2_SHIFT; 259 p2[7] = (qfprom_cdata[3] & MSM8976_S7_P2_MASK) >> MSM8976_S7_P2_SHIFT; 260 p2[8] = (qfprom_cdata[4] & MSM8976_S8_P2_MASK) >> MSM8976_S8_P2_SHIFT; 261 p2[9] = (qfprom_cdata[4] & MSM8976_S9_P2_MASK) >> MSM8976_S9_P2_SHIFT; 262 p2[10] = (qfprom_cdata[5] & MSM8976_S10_P2_MASK) >> MSM8976_S10_P2_SHIFT; 263 264 for (i = 0; i < priv->num_sensors; i++) 265 p2[i] = ((base1 + p2[i]) << 2); 266 /* Fall through */ 267 case ONE_PT_CALIB2: 268 base0 = qfprom_cdata[0] & MSM8976_BASE0_MASK; 269 p1[0] = (qfprom_cdata[0] & MSM8976_S0_P1_MASK) >> MSM8976_S0_P1_SHIFT; 270 p1[1] = (qfprom_cdata[0] & MSM8976_S1_P1_MASK) >> MSM8976_S1_P1_SHIFT; 271 p1[2] = (qfprom_cdata[1] & MSM8976_S2_P1_MASK) >> MSM8976_S2_P1_SHIFT; 272 p1[3] = (qfprom_cdata[1] & MSM8976_S3_P1_MASK) >> MSM8976_S3_P1_SHIFT; 273 p1[4] = (qfprom_cdata[2] & MSM8976_S4_P1_MASK) >> MSM8976_S4_P1_SHIFT; 274 p1[5] = (qfprom_cdata[2] & MSM8976_S5_P1_MASK) >> MSM8976_S5_P1_SHIFT; 275 p1[6] = (qfprom_cdata[3] & MSM8976_S6_P1_MASK) >> MSM8976_S6_P1_SHIFT; 276 p1[7] = (qfprom_cdata[3] & MSM8976_S7_P1_MASK) >> MSM8976_S7_P1_SHIFT; 277 p1[8] = (qfprom_cdata[4] & MSM8976_S8_P1_MASK) >> MSM8976_S8_P1_SHIFT; 278 p1[9] = (qfprom_cdata[4] & MSM8976_S9_P1_MASK) >> MSM8976_S9_P1_SHIFT; 279 p1[10] = (qfprom_cdata[4] & MSM8976_S10_P1_MASK) >> MSM8976_S10_P1_SHIFT; 280 tmp = (qfprom_cdata[5] & MSM8976_S10_P1_MASK_1) << MSM8976_S10_P1_SHIFT_1; 281 p1[10] |= tmp; 282 283 for (i = 0; i < priv->num_sensors; i++) 284 p1[i] = (((base0) + p1[i]) << 2); 285 break; 286 default: 287 for (i = 0; i < priv->num_sensors; i++) { 288 p1[i] = 500; 289 p2[i] = 780; 290 } 291 break; 292 } 293 294 compute_intercept_slope_8976(priv, p1, p2, mode); 295 kfree(qfprom_cdata); 296 297 return 0; 298 } 299 300 /* v1.x: msm8956,8976,qcs404,405 */ 301 302 static const struct tsens_features tsens_v1_feat = { 303 .ver_major = VER_1_X, 304 .crit_int = 0, 305 .adc = 1, 306 .srot_split = 1, 307 .max_sensors = 11, 308 }; 309 310 static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = { 311 /* ----- SROT ------ */ 312 /* VERSION */ 313 [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31), 314 [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27), 315 [VER_STEP] = REG_FIELD(SROT_HW_VER_OFF, 0, 15), 316 /* CTRL_OFFSET */ 317 [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0), 318 [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1), 319 [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13), 320 321 /* ----- TM ------ */ 322 /* INTERRUPT ENABLE */ 323 [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0), 324 325 /* UPPER/LOWER TEMPERATURE THRESHOLDS */ 326 REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9), 327 REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19), 328 329 /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */ 330 REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20), 331 REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21), 332 [LOW_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 0, 0), 333 [LOW_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 1, 1), 334 [LOW_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 2, 2), 335 [LOW_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 3, 3), 336 [LOW_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 4, 4), 337 [LOW_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 5, 5), 338 [LOW_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 6, 6), 339 [LOW_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 7, 7), 340 [UP_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 8, 8), 341 [UP_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 9, 9), 342 [UP_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 10, 10), 343 [UP_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 11, 11), 344 [UP_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 12, 12), 345 [UP_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 13, 13), 346 [UP_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 14, 14), 347 [UP_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 15, 15), 348 349 /* NO CRITICAL INTERRUPT SUPPORT on v1 */ 350 351 /* Sn_STATUS */ 352 REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9), 353 REG_FIELD_FOR_EACH_SENSOR11(VALID, TM_Sn_STATUS_OFF, 14, 14), 354 /* xxx_STATUS bits: 1 == threshold violated */ 355 REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10), 356 REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11), 357 REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12), 358 /* No CRITICAL field on v1.x */ 359 REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13), 360 361 /* TRDY: 1=ready, 0=in progress */ 362 [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0), 363 }; 364 365 static const struct tsens_ops ops_generic_v1 = { 366 .init = init_common, 367 .calibrate = calibrate_v1, 368 .get_temp = get_temp_tsens_valid, 369 }; 370 371 const struct tsens_plat_data data_tsens_v1 = { 372 .ops = &ops_generic_v1, 373 .feat = &tsens_v1_feat, 374 .fields = tsens_v1_regfields, 375 }; 376 377 static const struct tsens_ops ops_8976 = { 378 .init = init_common, 379 .calibrate = calibrate_8976, 380 .get_temp = get_temp_tsens_valid, 381 }; 382 383 /* Valid for both MSM8956 and MSM8976. Sensor ID 3 is unused. */ 384 const struct tsens_plat_data data_8976 = { 385 .num_sensors = 11, 386 .ops = &ops_8976, 387 .hw_ids = (unsigned int[]){0, 1, 2, 4, 5, 6, 7, 8, 9, 10}, 388 .feat = &tsens_v1_feat, 389 .fields = tsens_v1_regfields, 390 }; 391