245 lines
6.9 KiB
C
245 lines
6.9 KiB
C
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/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/platform_device.h>
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#include "tsens.h"
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/* eeprom layout data for 8974 */
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#define BASE1_MASK 0xff
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#define S0_P1_MASK 0x3f00
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#define S1_P1_MASK 0xfc000
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#define S2_P1_MASK 0x3f00000
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#define S3_P1_MASK 0xfc000000
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#define S4_P1_MASK 0x3f
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#define S5_P1_MASK 0xfc0
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#define S6_P1_MASK 0x3f000
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#define S7_P1_MASK 0xfc0000
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#define S8_P1_MASK 0x3f000000
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#define S8_P1_MASK_BKP 0x3f
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#define S9_P1_MASK 0x3f
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#define S9_P1_MASK_BKP 0xfc0
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#define S10_P1_MASK 0xfc0
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#define S10_P1_MASK_BKP 0x3f000
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#define CAL_SEL_0_1 0xc0000000
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#define CAL_SEL_2 0x40000000
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#define CAL_SEL_SHIFT 30
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#define CAL_SEL_SHIFT_2 28
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#define S0_P1_SHIFT 8
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#define S1_P1_SHIFT 14
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#define S2_P1_SHIFT 20
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#define S3_P1_SHIFT 26
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#define S5_P1_SHIFT 6
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#define S6_P1_SHIFT 12
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#define S7_P1_SHIFT 18
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#define S8_P1_SHIFT 24
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#define S9_P1_BKP_SHIFT 6
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#define S10_P1_SHIFT 6
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#define S10_P1_BKP_SHIFT 12
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#define BASE2_SHIFT 12
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#define BASE2_BKP_SHIFT 18
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#define S0_P2_SHIFT 20
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#define S0_P2_BKP_SHIFT 26
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#define S1_P2_SHIFT 26
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#define S2_P2_BKP_SHIFT 6
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#define S3_P2_SHIFT 6
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#define S3_P2_BKP_SHIFT 12
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#define S4_P2_SHIFT 12
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#define S4_P2_BKP_SHIFT 18
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#define S5_P2_SHIFT 18
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#define S5_P2_BKP_SHIFT 24
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#define S6_P2_SHIFT 24
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#define S7_P2_BKP_SHIFT 6
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#define S8_P2_SHIFT 6
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#define S8_P2_BKP_SHIFT 12
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#define S9_P2_SHIFT 12
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#define S9_P2_BKP_SHIFT 18
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#define S10_P2_SHIFT 18
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#define S10_P2_BKP_SHIFT 24
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#define BASE2_MASK 0xff000
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#define BASE2_BKP_MASK 0xfc0000
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#define S0_P2_MASK 0x3f00000
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#define S0_P2_BKP_MASK 0xfc000000
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#define S1_P2_MASK 0xfc000000
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#define S1_P2_BKP_MASK 0x3f
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#define S2_P2_MASK 0x3f
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#define S2_P2_BKP_MASK 0xfc0
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#define S3_P2_MASK 0xfc0
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#define S3_P2_BKP_MASK 0x3f000
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#define S4_P2_MASK 0x3f000
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#define S4_P2_BKP_MASK 0xfc0000
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#define S5_P2_MASK 0xfc0000
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#define S5_P2_BKP_MASK 0x3f000000
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#define S6_P2_MASK 0x3f000000
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#define S6_P2_BKP_MASK 0x3f
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#define S7_P2_MASK 0x3f
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#define S7_P2_BKP_MASK 0xfc0
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#define S8_P2_MASK 0xfc0
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#define S8_P2_BKP_MASK 0x3f000
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#define S9_P2_MASK 0x3f000
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#define S9_P2_BKP_MASK 0xfc0000
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#define S10_P2_MASK 0xfc0000
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#define S10_P2_BKP_MASK 0x3f000000
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#define BKP_SEL 0x3
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#define BKP_REDUN_SEL 0xe0000000
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#define BKP_REDUN_SHIFT 29
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#define BIT_APPEND 0x3
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static int calibrate_8974(struct tsens_device *tmdev)
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{
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int base1 = 0, base2 = 0, i;
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u32 p1[11], p2[11];
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int mode = 0;
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u32 *calib, *bkp;
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u32 calib_redun_sel;
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calib = (u32 *)qfprom_read(tmdev->dev, "calib");
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if (IS_ERR(calib))
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return PTR_ERR(calib);
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bkp = (u32 *)qfprom_read(tmdev->dev, "calib_backup");
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if (IS_ERR(bkp))
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return PTR_ERR(bkp);
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calib_redun_sel = bkp[1] & BKP_REDUN_SEL;
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calib_redun_sel >>= BKP_REDUN_SHIFT;
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if (calib_redun_sel == BKP_SEL) {
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mode = (calib[4] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
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mode |= (calib[5] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
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switch (mode) {
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case TWO_PT_CALIB:
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base2 = (bkp[2] & BASE2_BKP_MASK) >> BASE2_BKP_SHIFT;
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p2[0] = (bkp[2] & S0_P2_BKP_MASK) >> S0_P2_BKP_SHIFT;
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p2[1] = (bkp[3] & S1_P2_BKP_MASK);
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p2[2] = (bkp[3] & S2_P2_BKP_MASK) >> S2_P2_BKP_SHIFT;
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p2[3] = (bkp[3] & S3_P2_BKP_MASK) >> S3_P2_BKP_SHIFT;
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p2[4] = (bkp[3] & S4_P2_BKP_MASK) >> S4_P2_BKP_SHIFT;
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p2[5] = (calib[4] & S5_P2_BKP_MASK) >> S5_P2_BKP_SHIFT;
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p2[6] = (calib[5] & S6_P2_BKP_MASK);
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p2[7] = (calib[5] & S7_P2_BKP_MASK) >> S7_P2_BKP_SHIFT;
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p2[8] = (calib[5] & S8_P2_BKP_MASK) >> S8_P2_BKP_SHIFT;
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p2[9] = (calib[5] & S9_P2_BKP_MASK) >> S9_P2_BKP_SHIFT;
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p2[10] = (calib[5] & S10_P2_BKP_MASK) >> S10_P2_BKP_SHIFT;
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/* Fall through */
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case ONE_PT_CALIB:
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case ONE_PT_CALIB2:
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base1 = bkp[0] & BASE1_MASK;
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p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
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p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
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p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
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p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
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p1[4] = (bkp[1] & S4_P1_MASK);
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p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
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p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
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p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
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p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
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p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
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p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
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break;
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}
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} else {
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mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
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mode |= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
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switch (mode) {
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case TWO_PT_CALIB:
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base2 = (calib[2] & BASE2_MASK) >> BASE2_SHIFT;
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p2[0] = (calib[2] & S0_P2_MASK) >> S0_P2_SHIFT;
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p2[1] = (calib[2] & S1_P2_MASK) >> S1_P2_SHIFT;
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p2[2] = (calib[3] & S2_P2_MASK);
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p2[3] = (calib[3] & S3_P2_MASK) >> S3_P2_SHIFT;
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p2[4] = (calib[3] & S4_P2_MASK) >> S4_P2_SHIFT;
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p2[5] = (calib[3] & S5_P2_MASK) >> S5_P2_SHIFT;
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p2[6] = (calib[3] & S6_P2_MASK) >> S6_P2_SHIFT;
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p2[7] = (calib[4] & S7_P2_MASK);
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p2[8] = (calib[4] & S8_P2_MASK) >> S8_P2_SHIFT;
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p2[9] = (calib[4] & S9_P2_MASK) >> S9_P2_SHIFT;
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p2[10] = (calib[4] & S10_P2_MASK) >> S10_P2_SHIFT;
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/* Fall through */
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case ONE_PT_CALIB:
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case ONE_PT_CALIB2:
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base1 = calib[0] & BASE1_MASK;
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p1[0] = (calib[0] & S0_P1_MASK) >> S0_P1_SHIFT;
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p1[1] = (calib[0] & S1_P1_MASK) >> S1_P1_SHIFT;
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p1[2] = (calib[0] & S2_P1_MASK) >> S2_P1_SHIFT;
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p1[3] = (calib[0] & S3_P1_MASK) >> S3_P1_SHIFT;
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p1[4] = (calib[1] & S4_P1_MASK);
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p1[5] = (calib[1] & S5_P1_MASK) >> S5_P1_SHIFT;
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p1[6] = (calib[1] & S6_P1_MASK) >> S6_P1_SHIFT;
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p1[7] = (calib[1] & S7_P1_MASK) >> S7_P1_SHIFT;
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p1[8] = (calib[1] & S8_P1_MASK) >> S8_P1_SHIFT;
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p1[9] = (calib[2] & S9_P1_MASK);
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p1[10] = (calib[2] & S10_P1_MASK) >> S10_P1_SHIFT;
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break;
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}
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}
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switch (mode) {
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case ONE_PT_CALIB:
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for (i = 0; i < tmdev->num_sensors; i++)
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p1[i] += (base1 << 2) | BIT_APPEND;
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break;
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case TWO_PT_CALIB:
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for (i = 0; i < tmdev->num_sensors; i++) {
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p2[i] += base2;
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p2[i] <<= 2;
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p2[i] |= BIT_APPEND;
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}
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/* Fall through */
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case ONE_PT_CALIB2:
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for (i = 0; i < tmdev->num_sensors; i++) {
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p1[i] += base1;
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p1[i] <<= 2;
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p1[i] |= BIT_APPEND;
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}
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break;
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default:
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for (i = 0; i < tmdev->num_sensors; i++)
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p2[i] = 780;
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p1[0] = 502;
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p1[1] = 509;
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p1[2] = 503;
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p1[3] = 509;
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p1[4] = 505;
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p1[5] = 509;
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p1[6] = 507;
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p1[7] = 510;
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p1[8] = 508;
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p1[9] = 509;
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p1[10] = 508;
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break;
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}
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compute_intercept_slope(tmdev, p1, p2, mode);
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return 0;
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}
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static const struct tsens_ops ops_8974 = {
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.init = init_common,
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.calibrate = calibrate_8974,
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.get_temp = get_temp_common,
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};
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const struct tsens_data data_8974 = {
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.num_sensors = 11,
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.ops = &ops_8974,
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};
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