drivers/thermal/qcom/tsens-8974.c

   1 /*
   2  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 and
   6  * only version 2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  */
  14
  15 #include <linux/platform_device.h>
  16 #include "tsens.h"
  17
  18 /* eeprom layout data for 8974 */
  19 #define BASE1_MASK              0xff
  20 #define S0_P1_MASK              0x3f00
  21 #define S1_P1_MASK              0xfc000
  22 #define S2_P1_MASK              0x3f00000
  23 #define S3_P1_MASK              0xfc000000
  24 #define S4_P1_MASK              0x3f
  25 #define S5_P1_MASK              0xfc0
  26 #define S6_P1_MASK              0x3f000
  27 #define S7_P1_MASK              0xfc0000
  28 #define S8_P1_MASK              0x3f000000
  29 #define S8_P1_MASK_BKP          0x3f
  30 #define S9_P1_MASK              0x3f
  31 #define S9_P1_MASK_BKP          0xfc0
  32 #define S10_P1_MASK             0xfc0
  33 #define S10_P1_MASK_BKP         0x3f000
  34 #define CAL_SEL_0_1             0xc0000000
  35 #define CAL_SEL_2               0x40000000
  36 #define CAL_SEL_SHIFT           30
  37 #define CAL_SEL_SHIFT_2         28
  38
  39 #define S0_P1_SHIFT             8
  40 #define S1_P1_SHIFT             14
  41 #define S2_P1_SHIFT             20
  42 #define S3_P1_SHIFT             26
  43 #define S5_P1_SHIFT             6
  44 #define S6_P1_SHIFT             12
  45 #define S7_P1_SHIFT             18
  46 #define S8_P1_SHIFT             24
  47 #define S9_P1_BKP_SHIFT         6
  48 #define S10_P1_SHIFT            6
  49 #define S10_P1_BKP_SHIFT        12
  50
  51 #define BASE2_SHIFT             12
  52 #define BASE2_BKP_SHIFT         18
  53 #define S0_P2_SHIFT             20
  54 #define S0_P2_BKP_SHIFT         26
  55 #define S1_P2_SHIFT             26
  56 #define S2_P2_BKP_SHIFT         6
  57 #define S3_P2_SHIFT             6
  58 #define S3_P2_BKP_SHIFT         12
  59 #define S4_P2_SHIFT             12
  60 #define S4_P2_BKP_SHIFT         18
  61 #define S5_P2_SHIFT             18
  62 #define S5_P2_BKP_SHIFT         24
  63 #define S6_P2_SHIFT             24
  64 #define S7_P2_BKP_SHIFT         6
  65 #define S8_P2_SHIFT             6
  66 #define S8_P2_BKP_SHIFT         12
  67 #define S9_P2_SHIFT             12
  68 #define S9_P2_BKP_SHIFT         18
  69 #define S10_P2_SHIFT            18
  70 #define S10_P2_BKP_SHIFT        24
  71
  72 #define BASE2_MASK              0xff000
  73 #define BASE2_BKP_MASK          0xfc0000
  74 #define S0_P2_MASK              0x3f00000
  75 #define S0_P2_BKP_MASK          0xfc000000
  76 #define S1_P2_MASK              0xfc000000
  77 #define S1_P2_BKP_MASK          0x3f
  78 #define S2_P2_MASK              0x3f
  79 #define S2_P2_BKP_MASK          0xfc0
  80 #define S3_P2_MASK              0xfc0
  81 #define S3_P2_BKP_MASK          0x3f000
  82 #define S4_P2_MASK              0x3f000
  83 #define S4_P2_BKP_MASK          0xfc0000
  84 #define S5_P2_MASK              0xfc0000
  85 #define S5_P2_BKP_MASK          0x3f000000
  86 #define S6_P2_MASK              0x3f000000
  87 #define S6_P2_BKP_MASK          0x3f
  88 #define S7_P2_MASK              0x3f
  89 #define S7_P2_BKP_MASK          0xfc0
  90 #define S8_P2_MASK              0xfc0
  91 #define S8_P2_BKP_MASK          0x3f000
  92 #define S9_P2_MASK              0x3f000
  93 #define S9_P2_BKP_MASK          0xfc0000
  94 #define S10_P2_MASK             0xfc0000
  95 #define S10_P2_BKP_MASK         0x3f000000
  96
  97 #define BKP_SEL                 0x3
  98 #define BKP_REDUN_SEL           0xe0000000
  99 #define BKP_REDUN_SHIFT         29
 100
 101 #define BIT_APPEND              0x3
 102
 103 static int calibrate_8974(struct tsens_device *tmdev)
 104 {
 105         int base1 = 0, base2 = 0, i;
 106         u32 p1[11], p2[11];
 107         int mode = 0;
 108         u32 *calib, *bkp;
 109         u32 calib_redun_sel;
 110
 111         calib = (u32 *)qfprom_read(tmdev->dev, "calib");
 112         if (IS_ERR(calib))
 113                 return PTR_ERR(calib);
 114
 115         bkp = (u32 *)qfprom_read(tmdev->dev, "calib_backup");
 116         if (IS_ERR(bkp))
 117                 return PTR_ERR(bkp);
 118
 119         calib_redun_sel =  bkp[1] & BKP_REDUN_SEL;
 120         calib_redun_sel >>= BKP_REDUN_SHIFT;
 121
 122         if (calib_redun_sel == BKP_SEL) {
 123                 mode = (calib[4] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
 124                 mode |= (calib[5] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
 125
 126                 switch (mode) {
 127                 case TWO_PT_CALIB:
 128                         base2 = (bkp[2] & BASE2_BKP_MASK) >> BASE2_BKP_SHIFT;
 129                         p2[0] = (bkp[2] & S0_P2_BKP_MASK) >> S0_P2_BKP_SHIFT;
 130                         p2[1] = (bkp[3] & S1_P2_BKP_MASK);
 131                         p2[2] = (bkp[3] & S2_P2_BKP_MASK) >> S2_P2_BKP_SHIFT;
 132                         p2[3] = (bkp[3] & S3_P2_BKP_MASK) >> S3_P2_BKP_SHIFT;
 133                         p2[4] = (bkp[3] & S4_P2_BKP_MASK) >> S4_P2_BKP_SHIFT;
 134                         p2[5] = (calib[4] & S5_P2_BKP_MASK) >> S5_P2_BKP_SHIFT;
 135                         p2[6] = (calib[5] & S6_P2_BKP_MASK);
 136                         p2[7] = (calib[5] & S7_P2_BKP_MASK) >> S7_P2_BKP_SHIFT;
 137                         p2[8] = (calib[5] & S8_P2_BKP_MASK) >> S8_P2_BKP_SHIFT;
 138                         p2[9] = (calib[5] & S9_P2_BKP_MASK) >> S9_P2_BKP_SHIFT;
 139                         p2[10] = (calib[5] & S10_P2_BKP_MASK) >> S10_P2_BKP_SHIFT;
 140                         /* Fall through */
 141                 case ONE_PT_CALIB:
 142                 case ONE_PT_CALIB2:
 143                         base1 = bkp[0] & BASE1_MASK;
 144                         p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
 145                         p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
 146                         p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
 147                         p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
 148                         p1[4] = (bkp[1] & S4_P1_MASK);
 149                         p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
 150                         p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
 151                         p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
 152                         p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
 153                         p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
 154                         p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
 155                         break;
 156                 }
 157         } else {
 158                 mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
 159                 mode |= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
 160
 161                 switch (mode) {
 162                 case TWO_PT_CALIB:
 163                         base2 = (calib[2] & BASE2_MASK) >> BASE2_SHIFT;
 164                         p2[0] = (calib[2] & S0_P2_MASK) >> S0_P2_SHIFT;
 165                         p2[1] = (calib[2] & S1_P2_MASK) >> S1_P2_SHIFT;
 166                         p2[2] = (calib[3] & S2_P2_MASK);
 167                         p2[3] = (calib[3] & S3_P2_MASK) >> S3_P2_SHIFT;
 168                         p2[4] = (calib[3] & S4_P2_MASK) >> S4_P2_SHIFT;
 169                         p2[5] = (calib[3] & S5_P2_MASK) >> S5_P2_SHIFT;
 170                         p2[6] = (calib[3] & S6_P2_MASK) >> S6_P2_SHIFT;
 171                         p2[7] = (calib[4] & S7_P2_MASK);
 172                         p2[8] = (calib[4] & S8_P2_MASK) >> S8_P2_SHIFT;
 173                         p2[9] = (calib[4] & S9_P2_MASK) >> S9_P2_SHIFT;
 174                         p2[10] = (calib[4] & S10_P2_MASK) >> S10_P2_SHIFT;
 175                         /* Fall through */
 176                 case ONE_PT_CALIB:
 177                 case ONE_PT_CALIB2:
 178                         base1 = calib[0] & BASE1_MASK;
 179                         p1[0] = (calib[0] & S0_P1_MASK) >> S0_P1_SHIFT;
 180                         p1[1] = (calib[0] & S1_P1_MASK) >> S1_P1_SHIFT;
 181                         p1[2] = (calib[0] & S2_P1_MASK) >> S2_P1_SHIFT;
 182                         p1[3] = (calib[0] & S3_P1_MASK) >> S3_P1_SHIFT;
 183                         p1[4] = (calib[1] & S4_P1_MASK);
 184                         p1[5] = (calib[1] & S5_P1_MASK) >> S5_P1_SHIFT;
 185                         p1[6] = (calib[1] & S6_P1_MASK) >> S6_P1_SHIFT;
 186                         p1[7] = (calib[1] & S7_P1_MASK) >> S7_P1_SHIFT;
 187                         p1[8] = (calib[1] & S8_P1_MASK) >> S8_P1_SHIFT;
 188                         p1[9] = (calib[2] & S9_P1_MASK);
 189                         p1[10] = (calib[2] & S10_P1_MASK) >> S10_P1_SHIFT;
 190                         break;
 191                 }
 192         }
 193
 194         switch (mode) {
 195         case ONE_PT_CALIB:
 196                 for (i = 0; i < tmdev->num_sensors; i++)
 197                         p1[i] += (base1 << 2) | BIT_APPEND;
 198                 break;
 199         case TWO_PT_CALIB:
 200                 for (i = 0; i < tmdev->num_sensors; i++) {
 201                         p2[i] += base2;
 202                         p2[i] <<= 2;
 203                         p2[i] |= BIT_APPEND;
 204                 }
 205                 /* Fall through */
 206         case ONE_PT_CALIB2:
 207                 for (i = 0; i < tmdev->num_sensors; i++) {
 208                         p1[i] += base1;
 209                         p1[i] <<= 2;
 210                         p1[i] |= BIT_APPEND;
 211                 }
 212                 break;
 213         default:
 214                 for (i = 0; i < tmdev->num_sensors; i++)
 215                         p2[i] = 780;
 216                 p1[0] = 502;
 217                 p1[1] = 509;
 218                 p1[2] = 503;
 219                 p1[3] = 509;
 220                 p1[4] = 505;
 221                 p1[5] = 509;
 222                 p1[6] = 507;
 223                 p1[7] = 510;
 224                 p1[8] = 508;
 225                 p1[9] = 509;
 226                 p1[10] = 508;
 227                 break;
 228         }
 229
 230         compute_intercept_slope(tmdev, p1, p2, mode);
 231
 232         return 0;
 233 }
 234
 235 static const struct tsens_ops ops_8974 = {
 236         .init           = init_common,
 237         .calibrate      = calibrate_8974,
 238         .get_temp       = get_temp_common,
 239 };
 240
 241 const struct tsens_data data_8974 = {
 242         .num_sensors    = 11,
 243         .ops            = &ops_8974,
 244 };