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c7071f4914
Currently the kfree of pointer qfprom_cdata is kfreeing an
error value that has been cast to a pointer rather than a
valid address. Fix this by removing the kfree.
Fixes: 95ededc17e4e ("thermal: qcom: tsens-v1: Add support for MSM8956 and MSM8976")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: AngeloGioacchino Del Regno <kholk11@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191022111806.23143-1-colin.king@canonical.com
391 lines
13 KiB
C
391 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019, Linaro Limited
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*/
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#include <linux/bitops.h>
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#include <linux/regmap.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include "tsens.h"
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/* ----- SROT ------ */
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#define SROT_HW_VER_OFF 0x0000
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#define SROT_CTRL_OFF 0x0004
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/* ----- TM ------ */
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#define TM_INT_EN_OFF 0x0000
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#define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004
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#define TM_Sn_STATUS_OFF 0x0044
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#define TM_TRDY_OFF 0x0084
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#define TM_HIGH_LOW_INT_STATUS_OFF 0x0088
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#define TM_HIGH_LOW_Sn_INT_THRESHOLD_OFF 0x0090
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/* eeprom layout data for msm8956/76 (v1) */
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#define MSM8976_BASE0_MASK 0xff
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#define MSM8976_BASE1_MASK 0xff
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#define MSM8976_BASE1_SHIFT 8
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#define MSM8976_S0_P1_MASK 0x3f00
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#define MSM8976_S1_P1_MASK 0x3f00000
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#define MSM8976_S2_P1_MASK 0x3f
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#define MSM8976_S3_P1_MASK 0x3f000
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#define MSM8976_S4_P1_MASK 0x3f00
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#define MSM8976_S5_P1_MASK 0x3f00000
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#define MSM8976_S6_P1_MASK 0x3f
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#define MSM8976_S7_P1_MASK 0x3f000
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#define MSM8976_S8_P1_MASK 0x1f8
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#define MSM8976_S9_P1_MASK 0x1f8000
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#define MSM8976_S10_P1_MASK 0xf8000000
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#define MSM8976_S10_P1_MASK_1 0x1
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#define MSM8976_S0_P2_MASK 0xfc000
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#define MSM8976_S1_P2_MASK 0xfc000000
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#define MSM8976_S2_P2_MASK 0xfc0
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#define MSM8976_S3_P2_MASK 0xfc0000
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#define MSM8976_S4_P2_MASK 0xfc000
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#define MSM8976_S5_P2_MASK 0xfc000000
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#define MSM8976_S6_P2_MASK 0xfc0
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#define MSM8976_S7_P2_MASK 0xfc0000
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#define MSM8976_S8_P2_MASK 0x7e00
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#define MSM8976_S9_P2_MASK 0x7e00000
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#define MSM8976_S10_P2_MASK 0x7e
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#define MSM8976_S0_P1_SHIFT 8
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#define MSM8976_S1_P1_SHIFT 20
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#define MSM8976_S2_P1_SHIFT 0
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#define MSM8976_S3_P1_SHIFT 12
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#define MSM8976_S4_P1_SHIFT 8
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#define MSM8976_S5_P1_SHIFT 20
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#define MSM8976_S6_P1_SHIFT 0
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#define MSM8976_S7_P1_SHIFT 12
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#define MSM8976_S8_P1_SHIFT 3
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#define MSM8976_S9_P1_SHIFT 15
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#define MSM8976_S10_P1_SHIFT 27
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#define MSM8976_S10_P1_SHIFT_1 0
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#define MSM8976_S0_P2_SHIFT 14
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#define MSM8976_S1_P2_SHIFT 26
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#define MSM8976_S2_P2_SHIFT 6
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#define MSM8976_S3_P2_SHIFT 18
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#define MSM8976_S4_P2_SHIFT 14
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#define MSM8976_S5_P2_SHIFT 26
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#define MSM8976_S6_P2_SHIFT 6
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#define MSM8976_S7_P2_SHIFT 18
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#define MSM8976_S8_P2_SHIFT 9
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#define MSM8976_S9_P2_SHIFT 21
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#define MSM8976_S10_P2_SHIFT 1
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#define MSM8976_CAL_SEL_MASK 0x3
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#define MSM8976_CAL_DEGC_PT1 30
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#define MSM8976_CAL_DEGC_PT2 120
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#define MSM8976_SLOPE_FACTOR 1000
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#define MSM8976_SLOPE_DEFAULT 3200
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/* eeprom layout data for qcs404/405 (v1) */
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#define BASE0_MASK 0x000007f8
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#define BASE1_MASK 0x0007f800
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#define BASE0_SHIFT 3
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#define BASE1_SHIFT 11
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#define S0_P1_MASK 0x0000003f
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#define S1_P1_MASK 0x0003f000
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#define S2_P1_MASK 0x3f000000
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#define S3_P1_MASK 0x000003f0
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#define S4_P1_MASK 0x003f0000
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#define S5_P1_MASK 0x0000003f
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#define S6_P1_MASK 0x0003f000
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#define S7_P1_MASK 0x3f000000
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#define S8_P1_MASK 0x000003f0
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#define S9_P1_MASK 0x003f0000
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#define S0_P2_MASK 0x00000fc0
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#define S1_P2_MASK 0x00fc0000
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#define S2_P2_MASK_1_0 0xc0000000
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#define S2_P2_MASK_5_2 0x0000000f
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#define S3_P2_MASK 0x0000fc00
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#define S4_P2_MASK 0x0fc00000
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#define S5_P2_MASK 0x00000fc0
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#define S6_P2_MASK 0x00fc0000
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#define S7_P2_MASK_1_0 0xc0000000
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#define S7_P2_MASK_5_2 0x0000000f
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#define S8_P2_MASK 0x0000fc00
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#define S9_P2_MASK 0x0fc00000
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#define S0_P1_SHIFT 0
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#define S0_P2_SHIFT 6
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#define S1_P1_SHIFT 12
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#define S1_P2_SHIFT 18
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#define S2_P1_SHIFT 24
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#define S2_P2_SHIFT_1_0 30
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#define S2_P2_SHIFT_5_2 0
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#define S3_P1_SHIFT 4
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#define S3_P2_SHIFT 10
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#define S4_P1_SHIFT 16
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#define S4_P2_SHIFT 22
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#define S5_P1_SHIFT 0
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#define S5_P2_SHIFT 6
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#define S6_P1_SHIFT 12
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#define S6_P2_SHIFT 18
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#define S7_P1_SHIFT 24
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#define S7_P2_SHIFT_1_0 30
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#define S7_P2_SHIFT_5_2 0
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#define S8_P1_SHIFT 4
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#define S8_P2_SHIFT 10
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#define S9_P1_SHIFT 16
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#define S9_P2_SHIFT 22
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#define CAL_SEL_MASK 7
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#define CAL_SEL_SHIFT 0
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static void compute_intercept_slope_8976(struct tsens_priv *priv,
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u32 *p1, u32 *p2, u32 mode)
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{
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int i;
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priv->sensor[0].slope = 3313;
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priv->sensor[1].slope = 3275;
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priv->sensor[2].slope = 3320;
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priv->sensor[3].slope = 3246;
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priv->sensor[4].slope = 3279;
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priv->sensor[5].slope = 3257;
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priv->sensor[6].slope = 3234;
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priv->sensor[7].slope = 3269;
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priv->sensor[8].slope = 3255;
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priv->sensor[9].slope = 3239;
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priv->sensor[10].slope = 3286;
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for (i = 0; i < priv->num_sensors; i++) {
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priv->sensor[i].offset = (p1[i] * MSM8976_SLOPE_FACTOR) -
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(MSM8976_CAL_DEGC_PT1 *
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priv->sensor[i].slope);
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}
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}
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static int calibrate_v1(struct tsens_priv *priv)
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{
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u32 base0 = 0, base1 = 0;
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u32 p1[10], p2[10];
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u32 mode = 0, lsb = 0, msb = 0;
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u32 *qfprom_cdata;
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int i;
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qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
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if (IS_ERR(qfprom_cdata))
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return PTR_ERR(qfprom_cdata);
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mode = (qfprom_cdata[4] & CAL_SEL_MASK) >> CAL_SEL_SHIFT;
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dev_dbg(priv->dev, "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[4] & BASE1_MASK) >> BASE1_SHIFT;
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p2[0] = (qfprom_cdata[0] & S0_P2_MASK) >> S0_P2_SHIFT;
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p2[1] = (qfprom_cdata[0] & S1_P2_MASK) >> S1_P2_SHIFT;
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/* This value is split over two registers, 2 bits and 4 bits */
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lsb = (qfprom_cdata[0] & S2_P2_MASK_1_0) >> S2_P2_SHIFT_1_0;
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msb = (qfprom_cdata[1] & S2_P2_MASK_5_2) >> S2_P2_SHIFT_5_2;
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p2[2] = msb << 2 | lsb;
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p2[3] = (qfprom_cdata[1] & S3_P2_MASK) >> S3_P2_SHIFT;
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p2[4] = (qfprom_cdata[1] & S4_P2_MASK) >> S4_P2_SHIFT;
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p2[5] = (qfprom_cdata[2] & S5_P2_MASK) >> S5_P2_SHIFT;
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p2[6] = (qfprom_cdata[2] & S6_P2_MASK) >> S6_P2_SHIFT;
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/* This value is split over two registers, 2 bits and 4 bits */
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lsb = (qfprom_cdata[2] & S7_P2_MASK_1_0) >> S7_P2_SHIFT_1_0;
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msb = (qfprom_cdata[3] & S7_P2_MASK_5_2) >> S7_P2_SHIFT_5_2;
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p2[7] = msb << 2 | lsb;
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p2[8] = (qfprom_cdata[3] & S8_P2_MASK) >> S8_P2_SHIFT;
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p2[9] = (qfprom_cdata[3] & S9_P2_MASK) >> S9_P2_SHIFT;
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for (i = 0; i < priv->num_sensors; 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[4] & BASE0_MASK) >> BASE0_SHIFT;
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p1[0] = (qfprom_cdata[0] & S0_P1_MASK) >> S0_P1_SHIFT;
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p1[1] = (qfprom_cdata[0] & S1_P1_MASK) >> S1_P1_SHIFT;
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p1[2] = (qfprom_cdata[0] & S2_P1_MASK) >> S2_P1_SHIFT;
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p1[3] = (qfprom_cdata[1] & S3_P1_MASK) >> S3_P1_SHIFT;
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p1[4] = (qfprom_cdata[1] & S4_P1_MASK) >> S4_P1_SHIFT;
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p1[5] = (qfprom_cdata[2] & S5_P1_MASK) >> S5_P1_SHIFT;
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p1[6] = (qfprom_cdata[2] & S6_P1_MASK) >> S6_P1_SHIFT;
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p1[7] = (qfprom_cdata[2] & S7_P1_MASK) >> S7_P1_SHIFT;
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p1[8] = (qfprom_cdata[3] & S8_P1_MASK) >> S8_P1_SHIFT;
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p1[9] = (qfprom_cdata[3] & S9_P1_MASK) >> S9_P1_SHIFT;
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for (i = 0; i < priv->num_sensors; 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 < priv->num_sensors; 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(priv, p1, p2, mode);
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kfree(qfprom_cdata);
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return 0;
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}
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static int calibrate_8976(struct tsens_priv *priv)
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{
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int base0 = 0, base1 = 0, i;
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u32 p1[11], p2[11];
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int mode = 0, tmp = 0;
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u32 *qfprom_cdata;
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qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
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if (IS_ERR(qfprom_cdata))
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return PTR_ERR(qfprom_cdata);
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mode = (qfprom_cdata[4] & MSM8976_CAL_SEL_MASK);
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dev_dbg(priv->dev, "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[2] & MSM8976_BASE1_MASK) >> MSM8976_BASE1_SHIFT;
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p2[0] = (qfprom_cdata[0] & MSM8976_S0_P2_MASK) >> MSM8976_S0_P2_SHIFT;
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p2[1] = (qfprom_cdata[0] & MSM8976_S1_P2_MASK) >> MSM8976_S1_P2_SHIFT;
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p2[2] = (qfprom_cdata[1] & MSM8976_S2_P2_MASK) >> MSM8976_S2_P2_SHIFT;
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p2[3] = (qfprom_cdata[1] & MSM8976_S3_P2_MASK) >> MSM8976_S3_P2_SHIFT;
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p2[4] = (qfprom_cdata[2] & MSM8976_S4_P2_MASK) >> MSM8976_S4_P2_SHIFT;
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p2[5] = (qfprom_cdata[2] & MSM8976_S5_P2_MASK) >> MSM8976_S5_P2_SHIFT;
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p2[6] = (qfprom_cdata[3] & MSM8976_S6_P2_MASK) >> MSM8976_S6_P2_SHIFT;
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p2[7] = (qfprom_cdata[3] & MSM8976_S7_P2_MASK) >> MSM8976_S7_P2_SHIFT;
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p2[8] = (qfprom_cdata[4] & MSM8976_S8_P2_MASK) >> MSM8976_S8_P2_SHIFT;
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p2[9] = (qfprom_cdata[4] & MSM8976_S9_P2_MASK) >> MSM8976_S9_P2_SHIFT;
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p2[10] = (qfprom_cdata[5] & MSM8976_S10_P2_MASK) >> MSM8976_S10_P2_SHIFT;
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for (i = 0; i < priv->num_sensors; 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] & MSM8976_BASE0_MASK;
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p1[0] = (qfprom_cdata[0] & MSM8976_S0_P1_MASK) >> MSM8976_S0_P1_SHIFT;
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p1[1] = (qfprom_cdata[0] & MSM8976_S1_P1_MASK) >> MSM8976_S1_P1_SHIFT;
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p1[2] = (qfprom_cdata[1] & MSM8976_S2_P1_MASK) >> MSM8976_S2_P1_SHIFT;
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p1[3] = (qfprom_cdata[1] & MSM8976_S3_P1_MASK) >> MSM8976_S3_P1_SHIFT;
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p1[4] = (qfprom_cdata[2] & MSM8976_S4_P1_MASK) >> MSM8976_S4_P1_SHIFT;
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p1[5] = (qfprom_cdata[2] & MSM8976_S5_P1_MASK) >> MSM8976_S5_P1_SHIFT;
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p1[6] = (qfprom_cdata[3] & MSM8976_S6_P1_MASK) >> MSM8976_S6_P1_SHIFT;
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p1[7] = (qfprom_cdata[3] & MSM8976_S7_P1_MASK) >> MSM8976_S7_P1_SHIFT;
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p1[8] = (qfprom_cdata[4] & MSM8976_S8_P1_MASK) >> MSM8976_S8_P1_SHIFT;
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p1[9] = (qfprom_cdata[4] & MSM8976_S9_P1_MASK) >> MSM8976_S9_P1_SHIFT;
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p1[10] = (qfprom_cdata[4] & MSM8976_S10_P1_MASK) >> MSM8976_S10_P1_SHIFT;
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tmp = (qfprom_cdata[5] & MSM8976_S10_P1_MASK_1) << MSM8976_S10_P1_SHIFT_1;
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p1[10] |= tmp;
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for (i = 0; i < priv->num_sensors; 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 < priv->num_sensors; 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_8976(priv, p1, p2, mode);
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kfree(qfprom_cdata);
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return 0;
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}
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/* v1.x: msm8956,8976,qcs404,405 */
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static const struct tsens_features tsens_v1_feat = {
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.ver_major = VER_1_X,
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.crit_int = 0,
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.adc = 1,
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.srot_split = 1,
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.max_sensors = 11,
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};
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static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
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/* ----- SROT ------ */
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/* VERSION */
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[VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31),
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[VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27),
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[VER_STEP] = REG_FIELD(SROT_HW_VER_OFF, 0, 15),
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/* CTRL_OFFSET */
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[TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
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[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
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[SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13),
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/* ----- TM ------ */
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/* INTERRUPT ENABLE */
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[INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0),
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/* UPPER/LOWER TEMPERATURE THRESHOLDS */
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REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9),
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REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19),
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/* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */
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REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20),
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REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21),
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[LOW_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 0, 0),
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[LOW_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 1, 1),
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[LOW_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 2, 2),
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[LOW_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 3, 3),
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[LOW_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 4, 4),
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[LOW_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 5, 5),
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[LOW_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 6, 6),
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[LOW_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 7, 7),
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[UP_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 8, 8),
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[UP_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 9, 9),
|
|
[UP_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 10, 10),
|
|
[UP_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 11, 11),
|
|
[UP_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 12, 12),
|
|
[UP_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 13, 13),
|
|
[UP_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 14, 14),
|
|
[UP_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 15, 15),
|
|
|
|
/* NO CRITICAL INTERRUPT SUPPORT on v1 */
|
|
|
|
/* Sn_STATUS */
|
|
REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9),
|
|
REG_FIELD_FOR_EACH_SENSOR11(VALID, TM_Sn_STATUS_OFF, 14, 14),
|
|
/* xxx_STATUS bits: 1 == threshold violated */
|
|
REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10),
|
|
REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11),
|
|
REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12),
|
|
/* No CRITICAL field on v1.x */
|
|
REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13),
|
|
|
|
/* TRDY: 1=ready, 0=in progress */
|
|
[TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
|
|
};
|
|
|
|
static const struct tsens_ops ops_generic_v1 = {
|
|
.init = init_common,
|
|
.calibrate = calibrate_v1,
|
|
.get_temp = get_temp_tsens_valid,
|
|
};
|
|
|
|
const struct tsens_plat_data data_tsens_v1 = {
|
|
.ops = &ops_generic_v1,
|
|
.feat = &tsens_v1_feat,
|
|
.fields = tsens_v1_regfields,
|
|
};
|
|
|
|
static const struct tsens_ops ops_8976 = {
|
|
.init = init_common,
|
|
.calibrate = calibrate_8976,
|
|
.get_temp = get_temp_tsens_valid,
|
|
};
|
|
|
|
/* Valid for both MSM8956 and MSM8976. Sensor ID 3 is unused. */
|
|
const struct tsens_plat_data data_8976 = {
|
|
.num_sensors = 11,
|
|
.ops = &ops_8976,
|
|
.hw_ids = (unsigned int[]){0, 1, 2, 4, 5, 6, 7, 8, 9, 10},
|
|
.feat = &tsens_v1_feat,
|
|
.fields = tsens_v1_regfields,
|
|
};
|