253de8815d
Add efuse reads to compute slope and offset used to convert final temperature readings. Add all efuse related TSENS reads for 1xxx controller across different targets in a common file for calibration. Change-Id: I85bf5864230c60d796c4a32963fe896da5f9a095 Signed-off-by: Chinkit Kumar,Kirti Kumar Parmar <parma@codeaurora.org>
285 lines
8.7 KiB
C
285 lines
8.7 KiB
C
/* Copyright (c) 2012-2018, 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 8937 */
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#define BASE0_MASK_8937 0x000000ff
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#define BASE1_MASK_8937 0xff000000
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#define BASE1_SHIFT_8937 24
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#define S0_P1_MASK_8937 0x000001f8
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#define S1_P1_MASK_8937 0x001f8000
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#define S2_P1_MASK_0_4_8937 0xf8000000
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#define S2_P1_MASK_5_8937 0x00000001
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#define S3_P1_MASK_8937 0x00001f80
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#define S4_P1_MASK_8937 0x01f80000
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#define S5_P1_MASK_8937 0x00003f00
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#define S6_P1_MASK_8937 0x03f00000
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#define S7_P1_MASK_8937 0x0000003f
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#define S8_P1_MASK_8937 0x0003f000
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#define S9_P1_MASK_8937 0x0000003f
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#define S10_P1_MASK_8937 0x0003f000
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#define S0_P2_MASK_8937 0x00007e00
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#define S1_P2_MASK_8937 0x07e00000
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#define S2_P2_MASK_8937 0x0000007e
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#define S3_P2_MASK_8937 0x0007e000
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#define S4_P2_MASK_8937 0x7e000000
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#define S5_P2_MASK_8937 0x000fc000
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#define S6_P2_MASK_8937 0xfc000000
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#define S7_P2_MASK_8937 0x00000fc0
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#define S8_P2_MASK_8937 0x00fc0000
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#define S9_P2_MASK_8937 0x00000fc0
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#define S10_P2_MASK_8937 0x00fc0000
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#define S0_P1_SHIFT_8937 3
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#define S1_P1_SHIFT_8937 15
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#define S2_P1_SHIFT_0_4_8937 27
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#define S2_P1_SHIFT_5_8937 5
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#define S3_P1_SHIFT_8937 7
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#define S4_P1_SHIFT_8937 19
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#define S5_P1_SHIFT_8937 8
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#define S6_P1_SHIFT_8937 20
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#define S8_P1_SHIFT_8937 12
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#define S10_P1_SHIFT_8937 12
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#define S0_P2_SHIFT_8937 9
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#define S1_P2_SHIFT_8937 21
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#define S2_P2_SHIFT_8937 1
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#define S3_P2_SHIFT_8937 13
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#define S4_P2_SHIFT_8937 25
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#define S5_P2_SHIFT_8937 14
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#define S6_P2_SHIFT_8937 26
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#define S7_P2_SHIFT_8937 6
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#define S8_P2_SHIFT_8937 18
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#define S9_P2_SHIFT_8937 6
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#define S10_P2_SHIFT_8937 18
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#define CAL_SEL_MASK_8937 0x00000007
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/* eeprom layout for 8909 */
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#define TSENS_EEPROM(n) ((n) + 0xa0)
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#define BASE0_MASK_8909 0x000000ff
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#define BASE1_MASK_8909 0x0000ff00
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#define S0_P1_MASK_8909 0x0000003f
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#define S1_P1_MASK_8909 0x0003f000
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#define S2_P1_MASK_8909 0x3f000000
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#define S3_P1_MASK_8909 0x000003f0
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#define S4_P1_MASK_8909 0x003f0000
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#define S0_P2_MASK_8909 0x00000fc0
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#define S1_P2_MASK_8909 0x00fc0000
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#define S2_P2_MASK_0_1_8909 0xc0000000
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#define S2_P2_MASK_2_5_8909 0x0000000f
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#define S3_P2_MASK_8909 0x0000fc00
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#define S4_P2_MASK_8909 0x0fc00000
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#define TSENS_CAL_SEL_8909 0x00070000
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#define CAL_SEL_SHIFT_8909 16
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#define BASE1_SHIFT_8909 8
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#define S1_P1_SHIFT_8909 12
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#define S2_P1_SHIFT_8909 24
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#define S3_P1_SHIFT_8909 4
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#define S4_P1_SHIFT_8909 16
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#define S0_P2_SHIFT_8909 6
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#define S1_P2_SHIFT_8909 18
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#define S2_P2_SHIFT_0_1_8909 30
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#define S2_P2_SHIFT_2_5_8909 2
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#define S3_P2_SHIFT_8909 10
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#define S4_P2_SHIFT_8909 22
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#define CAL_DEGC_PT1 30
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#define CAL_DEGC_PT2 120
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/*
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* Use this function on devices where slope and offset calculations
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* depend on calibration data read from qfprom. On others the slope
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* and offset values are derived from tz->tzp->slope and tz->tzp->offset
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* resp.
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*/
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static void compute_intercept_slope(struct tsens_device *tmdev, u32 *p1,
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u32 *p2, u32 mode)
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{
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int i;
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int num, den;
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for (i = 0; i < tmdev->ctrl_data->num_sensors; i++) {
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pr_debug(
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"sensor%d - data_point1:%#x data_point2:%#x\n",
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i, p1[i], p2[i]);
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tmdev->sensor[i].slope = SLOPE_DEFAULT;
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if (mode == TWO_PT_CALIB) {
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/*
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* slope (m) = adc_code2 - adc_code1 (y2 - y1)/
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* temp_120_degc - temp_30_degc (x2 - x1)
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*/
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num = p2[i] - p1[i];
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num *= SLOPE_FACTOR;
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den = CAL_DEGC_PT2 - CAL_DEGC_PT1;
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tmdev->sensor[i].slope = num / den;
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}
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tmdev->sensor[i].offset = (p1[i] * SLOPE_FACTOR) -
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(CAL_DEGC_PT1 *
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tmdev->sensor[i].slope);
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pr_debug("offset:%d\n", tmdev->sensor[i].offset);
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}
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}
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int calibrate_8937(struct tsens_device *tmdev)
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{
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int base0 = 0, base1 = 0, i;
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u32 p1[TSENS_NUM_SENSORS_8937], p2[TSENS_NUM_SENSORS_8937];
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int mode = 0, tmp = 0;
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u32 qfprom_cdata[5] = {0, 0, 0, 0, 0};
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qfprom_cdata[0] = readl_relaxed(tmdev->tsens_calib_addr + 0x1D8);
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qfprom_cdata[1] = readl_relaxed(tmdev->tsens_calib_addr + 0x1DC);
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qfprom_cdata[2] = readl_relaxed(tmdev->tsens_calib_addr + 0x210);
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qfprom_cdata[3] = readl_relaxed(tmdev->tsens_calib_addr + 0x214);
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qfprom_cdata[4] = readl_relaxed(tmdev->tsens_calib_addr + 0x230);
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mode = (qfprom_cdata[2] & CAL_SEL_MASK_8937);
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pr_debug("calibration mode is %d\n", mode);
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switch (mode) {
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case TWO_PT_CALIB:
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base1 = (qfprom_cdata[1] &
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BASE1_MASK_8937) >> BASE1_SHIFT_8937;
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p2[0] = (qfprom_cdata[2] &
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S0_P2_MASK_8937) >> S0_P2_SHIFT_8937;
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p2[1] = (qfprom_cdata[2] &
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S1_P2_MASK_8937) >> S1_P2_SHIFT_8937;
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p2[2] = (qfprom_cdata[3] &
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S2_P2_MASK_8937) >> S2_P2_SHIFT_8937;
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p2[3] = (qfprom_cdata[3] &
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S3_P2_MASK_8937) >> S3_P2_SHIFT_8937;
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p2[4] = (qfprom_cdata[3] &
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S4_P2_MASK_8937) >> S4_P2_SHIFT_8937;
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p2[5] = (qfprom_cdata[0] &
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S5_P2_MASK_8937) >> S5_P2_SHIFT_8937;
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p2[6] = (qfprom_cdata[0] &
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S6_P2_MASK_8937) >> S6_P2_SHIFT_8937;
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p2[7] = (qfprom_cdata[1] &
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S7_P2_MASK_8937) >> S7_P2_SHIFT_8937;
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p2[8] = (qfprom_cdata[1] &
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S8_P2_MASK_8937) >> S8_P2_SHIFT_8937;
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p2[9] = (qfprom_cdata[4] &
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S9_P2_MASK_8937) >> S9_P2_SHIFT_8937;
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p2[10] = (qfprom_cdata[4] &
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S10_P2_MASK_8937) >> S10_P2_SHIFT_8937;
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for (i = 0; i < TSENS_NUM_SENSORS_8937; i++)
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p2[i] = ((base1 + p2[i]) << 2);
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/* Fall through */
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case ONE_PT_CALIB2:
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base0 = (qfprom_cdata[0] & BASE0_MASK_8937);
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p1[0] = (qfprom_cdata[2] &
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S0_P1_MASK_8937) >> S0_P1_SHIFT_8937;
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p1[1] = (qfprom_cdata[2] &
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S1_P1_MASK_8937) >> S1_P1_SHIFT_8937;
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p1[2] = (qfprom_cdata[2] &
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S2_P1_MASK_0_4_8937) >> S2_P1_SHIFT_0_4_8937;
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tmp = (qfprom_cdata[3] &
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S2_P1_MASK_5_8937) << S2_P1_SHIFT_5_8937;
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p1[2] |= tmp;
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p1[3] = (qfprom_cdata[3] &
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S3_P1_MASK_8937) >> S3_P1_SHIFT_8937;
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p1[4] = (qfprom_cdata[3] &
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S4_P1_MASK_8937) >> S4_P1_SHIFT_8937;
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p1[5] = (qfprom_cdata[0] &
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S5_P1_MASK_8937) >> S5_P1_SHIFT_8937;
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p1[6] = (qfprom_cdata[0] &
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S6_P1_MASK_8937) >> S6_P1_SHIFT_8937;
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p1[7] = (qfprom_cdata[1] & S7_P1_MASK_8937);
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p1[8] = (qfprom_cdata[1] &
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S8_P1_MASK_8937) >> S8_P1_SHIFT_8937;
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p1[9] = (qfprom_cdata[4] & S9_P1_MASK_8937);
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p1[10] = (qfprom_cdata[4] &
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S10_P1_MASK_8937) >> S10_P1_SHIFT_8937;
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for (i = 0; i < TSENS_NUM_SENSORS_8937; i++)
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p1[i] = (((base0) + p1[i]) << 2);
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break;
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default:
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for (i = 0; i < TSENS_NUM_SENSORS_8937; i++) {
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p1[i] = 500;
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p2[i] = 780;
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}
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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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int calibrate_8909(struct tsens_device *tmdev)
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{
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int i, base0 = 0, base1 = 0;
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u32 p1[TSENS_NUM_SENSORS_8909], p2[TSENS_NUM_SENSORS_8909];
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int mode = 0, temp = 0;
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uint32_t calib_data[3] = {0, 0, 0};
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calib_data[0] = readl_relaxed(
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TSENS_EEPROM(tmdev->tsens_calib_addr));
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calib_data[1] = readl_relaxed(
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(TSENS_EEPROM(tmdev->tsens_calib_addr) + 0x4));
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calib_data[2] = readl_relaxed(
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(TSENS_EEPROM(tmdev->tsens_calib_addr) + 0x3c));
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mode = (calib_data[2] & TSENS_CAL_SEL_8909) >> CAL_SEL_SHIFT_8909;
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pr_debug("calib mode is %d\n", mode);
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switch (mode) {
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case TWO_PT_CALIB:
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base1 = (calib_data[2] & BASE1_MASK_8909) >> BASE1_SHIFT_8909;
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p2[0] = (calib_data[0] & S0_P2_MASK_8909) >> S0_P2_SHIFT_8909;
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p2[1] = (calib_data[0] & S1_P2_MASK_8909) >> S1_P2_SHIFT_8909;
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p2[2] = (calib_data[0] &
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S2_P2_MASK_0_1_8909) >> S2_P2_SHIFT_0_1_8909;
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temp = (calib_data[1] &
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S2_P2_MASK_2_5_8909) << S2_P2_SHIFT_2_5_8909;
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p2[2] |= temp;
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p2[3] = (calib_data[1] & S3_P2_MASK_8909) >> S3_P2_SHIFT_8909;
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p2[4] = (calib_data[1] & S4_P2_MASK_8909) >> S4_P2_SHIFT_8909;
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for (i = 0; i < TSENS_NUM_SENSORS_8909; i++)
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p2[i] = ((base1 + p2[i]) << 2);
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/* Fall through */
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case ONE_PT_CALIB2:
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base0 = (calib_data[2] & BASE0_MASK_8909);
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p1[0] = (calib_data[0] & S0_P1_MASK_8909);
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p1[1] = (calib_data[0] & S1_P1_MASK_8909) >> S1_P1_SHIFT_8909;
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p1[2] = (calib_data[0] & S2_P1_MASK_8909) >> S2_P1_SHIFT_8909;
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p1[3] = (calib_data[1] & S3_P1_MASK_8909) >> S3_P1_SHIFT_8909;
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p1[4] = (calib_data[1] & S4_P1_MASK_8909) >> S4_P1_SHIFT_8909;
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for (i = 0; i < TSENS_NUM_SENSORS_8909; i++)
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p1[i] = (((base0) + p1[i]) << 2);
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break;
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default:
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for (i = 0; i < TSENS_NUM_SENSORS_8909; i++) {
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p1[i] = 500;
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p2[i] = 780;
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}
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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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