mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-11-07 04:09:21 +00:00
d31e4aee0f
Removing redundant parameters which are not applicable on the IADC peripheral. Fix the issue with "fast_avg_setup" and "decimation" parameters to configure correctly as per channel configuration. Change-Id: Idfe823effc6255b57e31f37621971aab29f08020 Signed-off-by: Dipen Parmar <dipenp@codeaurora.org>
1650 lines
41 KiB
C
1650 lines
41 KiB
C
/* Copyright (c) 2012-2014, 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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#define pr_fmt(fmt) "%s: " fmt, __func__
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/mutex.h>
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#include <linux/types.h>
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#include <linux/hwmon.h>
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#include <linux/module.h>
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#include <linux/debugfs.h>
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#include <linux/spmi.h>
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#include <linux/of_irq.h>
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#include <linux/wakelock.h>
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#include <linux/interrupt.h>
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#include <linux/completion.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/qpnp/qpnp-adc.h>
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#include <linux/platform_device.h>
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#include <linux/wakelock.h>
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/* QPNP IADC register definition */
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#define QPNP_IADC_REVISION1 0x0
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#define QPNP_IADC_REVISION2 0x1
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#define QPNP_IADC_REVISION3 0x2
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#define QPNP_IADC_REVISION4 0x3
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#define QPNP_IADC_PERPH_TYPE 0x4
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#define QPNP_IADC_PERH_SUBTYPE 0x5
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#define QPNP_IADC_SUPPORTED_REVISION2 1
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#define QPNP_STATUS1 0x8
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#define QPNP_STATUS1_OP_MODE 4
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#define QPNP_STATUS1_MULTI_MEAS_EN BIT(3)
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#define QPNP_STATUS1_MEAS_INTERVAL_EN_STS BIT(2)
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#define QPNP_STATUS1_REQ_STS BIT(1)
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#define QPNP_STATUS1_EOC BIT(0)
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#define QPNP_STATUS1_REQ_STS_EOC_MASK 0x3
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#define QPNP_STATUS2 0x9
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#define QPNP_STATUS2_CONV_SEQ_STATE_SHIFT 4
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#define QPNP_STATUS2_FIFO_NOT_EMPTY_FLAG BIT(1)
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#define QPNP_STATUS2_CONV_SEQ_TIMEOUT_STS BIT(0)
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#define QPNP_CONV_TIMEOUT_ERR 2
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#define QPNP_IADC_MODE_CTL 0x40
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#define QPNP_OP_MODE_SHIFT 4
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#define QPNP_USE_BMS_DATA BIT(4)
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#define QPNP_VADC_SYNCH_EN BIT(2)
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#define QPNP_OFFSET_RMV_EN BIT(1)
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#define QPNP_ADC_TRIM_EN BIT(0)
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#define QPNP_IADC_EN_CTL1 0x46
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#define QPNP_IADC_ADC_EN BIT(7)
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#define QPNP_ADC_CH_SEL_CTL 0x48
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#define QPNP_ADC_DIG_PARAM 0x50
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#define QPNP_ADC_CLK_SEL_MASK 0x3
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#define QPNP_ADC_DEC_RATIO_SEL_MASK 0xc
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#define QPNP_ADC_DIG_DEC_RATIO_SEL_SHIFT 2
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#define QPNP_CONV_REQ 0x52
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#define QPNP_CONV_REQ_SET BIT(7)
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#define QPNP_CONV_SEQ_CTL 0x54
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#define QPNP_CONV_SEQ_HOLDOFF_SHIFT 4
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#define QPNP_CONV_SEQ_TRIG_CTL 0x55
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#define QPNP_FAST_AVG_CTL 0x5a
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#define QPNP_M0_LOW_THR_LSB 0x5c
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#define QPNP_M0_LOW_THR_MSB 0x5d
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#define QPNP_M0_HIGH_THR_LSB 0x5e
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#define QPNP_M0_HIGH_THR_MSB 0x5f
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#define QPNP_M1_LOW_THR_LSB 0x69
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#define QPNP_M1_LOW_THR_MSB 0x6a
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#define QPNP_M1_HIGH_THR_LSB 0x6b
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#define QPNP_M1_HIGH_THR_MSB 0x6c
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#define QPNP_DATA0 0x60
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#define QPNP_DATA1 0x61
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#define QPNP_CONV_TIMEOUT_ERR 2
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#define QPNP_IADC_SEC_ACCESS 0xD0
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#define QPNP_IADC_SEC_ACCESS_DATA 0xA5
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#define QPNP_IADC_MSB_OFFSET 0xF2
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#define QPNP_IADC_LSB_OFFSET 0xF3
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#define QPNP_IADC_NOMINAL_RSENSE 0xF4
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#define QPNP_IADC_ATE_GAIN_CALIB_OFFSET 0xF5
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#define QPNP_INT_TEST_VAL 0xE1
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#define QPNP_IADC_ADC_CH_SEL_CTL 0x48
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#define QPNP_IADC_ADC_CHX_SEL_SHIFT 3
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#define QPNP_IADC_ADC_DIG_PARAM 0x50
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#define QPNP_IADC_CLK_SEL_SHIFT 1
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#define QPNP_IADC_DEC_RATIO_SEL 3
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#define QPNP_IADC_CONV_REQUEST 0x52
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#define QPNP_IADC_CONV_REQ BIT(7)
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#define QPNP_IADC_DATA0 0x60
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#define QPNP_IADC_DATA1 0x61
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#define QPNP_ADC_CONV_TIME_MIN 2000
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#define QPNP_ADC_CONV_TIME_MAX 2100
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#define QPNP_ADC_ERR_COUNT 20
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#define QPNP_ADC_GAIN_NV 17857
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#define QPNP_OFFSET_CALIBRATION_SHORT_CADC_LEADS_IDEAL 0
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#define QPNP_IADC_INTERNAL_RSENSE_N_OHMS_FACTOR 10000000
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#define QPNP_IADC_NANO_VOLTS_FACTOR 1000000
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#define QPNP_IADC_CALIB_SECONDS 300000
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#define QPNP_IADC_RSENSE_LSB_N_OHMS_PER_BIT 15625
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#define QPNP_IADC_DIE_TEMP_CALIB_OFFSET 5000
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#define QPNP_RAW_CODE_16_BIT_MSB_MASK 0xff00
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#define QPNP_RAW_CODE_16_BIT_LSB_MASK 0xff
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#define QPNP_BIT_SHIFT_8 8
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#define QPNP_RSENSE_MSB_SIGN_CHECK 0x80
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#define QPNP_ADC_COMPLETION_TIMEOUT HZ
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#define SMBB_BAT_IF_TRIM_CNST_RDS_MASK 0x7
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#define SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_0 0
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#define SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_2 2
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#define QPNP_IADC1_USR_TRIM2_ADC_FULLSCALE1_CONST 127
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#define QPNP_IADC_RSENSE_DEFAULT_VALUE 7800000
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#define QPNP_IADC_RSENSE_DEFAULT_TYPEB_GF 9000000
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#define QPNP_IADC_RSENSE_DEFAULT_TYPEB_SMIC 9700000
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struct qpnp_iadc_comp {
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bool ext_rsense;
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u8 id;
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u8 sys_gain;
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u8 revision_dig_major;
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u8 revision_ana_minor;
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};
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struct qpnp_iadc_chip {
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struct device *dev;
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struct qpnp_adc_drv *adc;
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int32_t rsense;
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bool external_rsense;
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bool default_internal_rsense;
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struct device *iadc_hwmon;
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struct list_head list;
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int64_t die_temp;
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struct delayed_work iadc_work;
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bool iadc_mode_sel;
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struct qpnp_iadc_comp iadc_comp;
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struct qpnp_vadc_chip *vadc_dev;
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struct work_struct trigger_completion_work;
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bool skip_auto_calibrations;
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bool iadc_poll_eoc;
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u16 batt_id_trim_cnst_rds;
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int rds_trim_default_type;
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int max_channels_available;
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bool rds_trim_default_check;
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int32_t rsense_workaround_value;
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struct sensor_device_attribute sens_attr[0];
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};
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LIST_HEAD(qpnp_iadc_device_list);
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enum qpnp_iadc_rsense_rds_workaround {
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QPNP_IADC_RDS_DEFAULT_TYPEA,
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QPNP_IADC_RDS_DEFAULT_TYPEB,
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QPNP_IADC_RDS_DEFAULT_TYPEC,
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};
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static int32_t qpnp_iadc_read_reg(struct qpnp_iadc_chip *iadc,
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uint32_t reg, u8 *data)
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{
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int rc;
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rc = spmi_ext_register_readl(iadc->adc->spmi->ctrl, iadc->adc->slave,
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(iadc->adc->offset + reg), data, 1);
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if (rc < 0) {
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pr_err("qpnp iadc read reg %d failed with %d\n", reg, rc);
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return rc;
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}
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return 0;
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}
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static int32_t qpnp_iadc_write_reg(struct qpnp_iadc_chip *iadc,
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uint32_t reg, u8 data)
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{
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int rc;
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u8 *buf;
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buf = &data;
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rc = spmi_ext_register_writel(iadc->adc->spmi->ctrl, iadc->adc->slave,
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(iadc->adc->offset + reg), buf, 1);
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if (rc < 0) {
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pr_err("qpnp iadc write reg %d failed with %d\n", reg, rc);
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return rc;
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}
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return 0;
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}
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static int qpnp_iadc_is_valid(struct qpnp_iadc_chip *iadc)
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{
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struct qpnp_iadc_chip *iadc_chip = NULL;
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list_for_each_entry(iadc_chip, &qpnp_iadc_device_list, list)
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if (iadc == iadc_chip)
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return 0;
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return -EINVAL;
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}
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static void qpnp_iadc_trigger_completion(struct work_struct *work)
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{
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struct qpnp_iadc_chip *iadc = container_of(work,
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struct qpnp_iadc_chip, trigger_completion_work);
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if (qpnp_iadc_is_valid(iadc) < 0)
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return;
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complete(&iadc->adc->adc_rslt_completion);
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return;
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}
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static irqreturn_t qpnp_iadc_isr(int irq, void *dev_id)
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{
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struct qpnp_iadc_chip *iadc = dev_id;
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schedule_work(&iadc->trigger_completion_work);
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return IRQ_HANDLED;
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}
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static int32_t qpnp_iadc_enable(struct qpnp_iadc_chip *dev, bool state)
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{
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int rc = 0;
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u8 data = 0;
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data = QPNP_IADC_ADC_EN;
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if (state) {
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rc = qpnp_iadc_write_reg(dev, QPNP_IADC_EN_CTL1,
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data);
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if (rc < 0) {
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pr_err("IADC enable failed\n");
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return rc;
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}
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} else {
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rc = qpnp_iadc_write_reg(dev, QPNP_IADC_EN_CTL1,
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(~data & QPNP_IADC_ADC_EN));
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if (rc < 0) {
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pr_err("IADC disable failed\n");
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return rc;
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}
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}
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return 0;
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}
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static int32_t qpnp_iadc_status_debug(struct qpnp_iadc_chip *dev)
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{
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int rc = 0;
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u8 mode = 0, status1 = 0, chan = 0, dig = 0, en = 0;
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rc = qpnp_iadc_read_reg(dev, QPNP_IADC_MODE_CTL, &mode);
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if (rc < 0) {
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pr_err("mode ctl register read failed with %d\n", rc);
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return rc;
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}
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rc = qpnp_iadc_read_reg(dev, QPNP_ADC_DIG_PARAM, &dig);
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if (rc < 0) {
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pr_err("digital param read failed with %d\n", rc);
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return rc;
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}
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rc = qpnp_iadc_read_reg(dev, QPNP_IADC_ADC_CH_SEL_CTL, &chan);
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if (rc < 0) {
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pr_err("channel read failed with %d\n", rc);
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return rc;
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}
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rc = qpnp_iadc_read_reg(dev, QPNP_STATUS1, &status1);
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if (rc < 0) {
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pr_err("status1 read failed with %d\n", rc);
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return rc;
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}
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rc = qpnp_iadc_read_reg(dev, QPNP_IADC_EN_CTL1, &en);
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if (rc < 0) {
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pr_err("en read failed with %d\n", rc);
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return rc;
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}
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pr_debug("EOC not set with status:%x, dig:%x, ch:%x, mode:%x, en:%x\n",
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status1, dig, chan, mode, en);
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rc = qpnp_iadc_enable(dev, false);
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if (rc < 0) {
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pr_err("IADC disable failed with %d\n", rc);
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return rc;
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}
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return 0;
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}
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static int32_t qpnp_iadc_read_conversion_result(struct qpnp_iadc_chip *iadc,
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int16_t *data)
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{
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uint8_t rslt_lsb, rslt_msb;
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uint16_t rslt;
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int32_t rc;
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rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_DATA0, &rslt_lsb);
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if (rc < 0) {
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pr_err("qpnp adc result read failed with %d\n", rc);
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return rc;
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}
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rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_DATA1, &rslt_msb);
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if (rc < 0) {
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pr_err("qpnp adc result read failed with %d\n", rc);
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return rc;
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}
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rslt = (rslt_msb << 8) | rslt_lsb;
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*data = rslt;
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rc = qpnp_iadc_enable(iadc, false);
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if (rc)
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return rc;
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return 0;
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}
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#define QPNP_IADC_PM8026_2_REV2 4
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#define QPNP_IADC_PM8026_2_REV3 2
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#define QPNP_COEFF_1 969000
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#define QPNP_COEFF_2 32
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#define QPNP_COEFF_3_TYPEA 1700000
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#define QPNP_COEFF_3_TYPEB 1000000
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#define QPNP_COEFF_4 100
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#define QPNP_COEFF_5 15
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#define QPNP_COEFF_6 100000
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#define QPNP_COEFF_7 21
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#define QPNP_COEFF_8 100000000
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#define QPNP_COEFF_9 38
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#define QPNP_COEFF_10 40
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#define QPNP_COEFF_11 7
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#define QPNP_COEFF_12 11
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#define QPNP_COEFF_13 37
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#define QPNP_COEFF_14 39
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#define QPNP_COEFF_15 9
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#define QPNP_COEFF_16 11
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#define QPNP_COEFF_17 851200
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#define QPNP_COEFF_18 296500
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#define QPNP_COEFF_19 222400
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#define QPNP_COEFF_20 813800
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#define QPNP_COEFF_21 1059100
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#define QPNP_COEFF_22 5000000
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#define QPNP_COEFF_23 3722500
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#define QPNP_COEFF_24 84
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#define QPNP_COEFF_25 33
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#define QPNP_COEFF_26 22
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#define QPNP_COEFF_27 53
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#define QPNP_COEFF_28 48
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static int32_t qpnp_iadc_comp(int64_t *result, struct qpnp_iadc_chip *iadc,
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int64_t die_temp)
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{
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int64_t temp_var = 0, sys_gain_coeff = 0, old;
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int32_t coeff_a = 0, coeff_b = 0;
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int version = 0;
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version = qpnp_adc_get_revid_version(iadc->dev);
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if (version == -EINVAL)
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return 0;
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old = *result;
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*result = *result * 1000000;
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if (iadc->iadc_comp.sys_gain > 127)
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sys_gain_coeff = -QPNP_COEFF_6 *
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(iadc->iadc_comp.sys_gain - 128);
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else
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sys_gain_coeff = QPNP_COEFF_6 *
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iadc->iadc_comp.sys_gain;
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switch (version) {
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case QPNP_REV_ID_8941_3_1:
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switch (iadc->iadc_comp.id) {
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case COMP_ID_GF:
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if (!iadc->iadc_comp.ext_rsense) {
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/* internal rsense */
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coeff_a = QPNP_COEFF_2;
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coeff_b = -QPNP_COEFF_3_TYPEA;
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} else {
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if (*result < 0) {
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/* charge */
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coeff_a = QPNP_COEFF_5;
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coeff_b = QPNP_COEFF_6;
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} else {
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/* discharge */
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coeff_a = -QPNP_COEFF_7;
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coeff_b = QPNP_COEFF_6;
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}
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}
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break;
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case COMP_ID_TSMC:
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default:
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if (!iadc->iadc_comp.ext_rsense) {
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/* internal rsense */
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coeff_a = QPNP_COEFF_2;
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coeff_b = -QPNP_COEFF_3_TYPEB;
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} else {
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if (*result < 0) {
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/* charge */
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coeff_a = QPNP_COEFF_5;
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coeff_b = QPNP_COEFF_6;
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} else {
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/* discharge */
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coeff_a = -QPNP_COEFF_7;
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coeff_b = QPNP_COEFF_6;
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}
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}
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break;
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}
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break;
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case QPNP_REV_ID_8026_2_1:
|
|
case QPNP_REV_ID_8026_2_2:
|
|
/* pm8026 rev 2.1 and 2.2 */
|
|
switch (iadc->iadc_comp.id) {
|
|
case COMP_ID_GF:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_25;
|
|
coeff_b = 0;
|
|
}
|
|
} else {
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
/* discharge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
}
|
|
}
|
|
break;
|
|
case COMP_ID_TSMC:
|
|
default:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_26;
|
|
coeff_b = 0;
|
|
}
|
|
} else {
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
/* discharge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case QPNP_REV_ID_8026_1_0:
|
|
/* pm8026 rev 1.0 */
|
|
switch (iadc->iadc_comp.id) {
|
|
case COMP_ID_GF:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = QPNP_COEFF_9;
|
|
coeff_b = -QPNP_COEFF_17;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_10;
|
|
coeff_b = QPNP_COEFF_18;
|
|
}
|
|
} else {
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = -QPNP_COEFF_11;
|
|
coeff_b = 0;
|
|
} else {
|
|
/* discharge */
|
|
coeff_a = -QPNP_COEFF_17;
|
|
coeff_b = -QPNP_COEFF_19;
|
|
}
|
|
}
|
|
break;
|
|
case COMP_ID_TSMC:
|
|
default:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = QPNP_COEFF_13;
|
|
coeff_b = -QPNP_COEFF_20;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_14;
|
|
coeff_b = QPNP_COEFF_21;
|
|
}
|
|
} else {
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = -QPNP_COEFF_15;
|
|
coeff_b = 0;
|
|
} else {
|
|
/* discharge */
|
|
coeff_a = -QPNP_COEFF_12;
|
|
coeff_b = -QPNP_COEFF_19;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case QPNP_REV_ID_8110_1_0:
|
|
/* pm8110 rev 1.0 */
|
|
switch (iadc->iadc_comp.id) {
|
|
case COMP_ID_GF:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = QPNP_COEFF_24;
|
|
coeff_b = -QPNP_COEFF_22;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_24;
|
|
coeff_b = -QPNP_COEFF_23;
|
|
}
|
|
}
|
|
break;
|
|
case COMP_ID_SMIC:
|
|
default:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = QPNP_COEFF_24;
|
|
coeff_b = -QPNP_COEFF_22;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_24;
|
|
coeff_b = -QPNP_COEFF_23;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case QPNP_REV_ID_8110_2_0:
|
|
die_temp -= 25000;
|
|
/* pm8110 rev 2.0 */
|
|
switch (iadc->iadc_comp.id) {
|
|
case COMP_ID_GF:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_27;
|
|
coeff_b = 0;
|
|
}
|
|
}
|
|
break;
|
|
case COMP_ID_SMIC:
|
|
default:
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
if (*result < 0) {
|
|
/* charge */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
} else {
|
|
coeff_a = QPNP_COEFF_28;
|
|
coeff_b = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
case QPNP_REV_ID_8026_2_0:
|
|
/* pm8026 rev 1.0 */
|
|
coeff_a = 0;
|
|
coeff_b = 0;
|
|
break;
|
|
}
|
|
|
|
temp_var = (coeff_a * die_temp) + coeff_b;
|
|
temp_var = div64_s64(temp_var, QPNP_COEFF_4);
|
|
temp_var = 1000 * (1000000 - temp_var);
|
|
|
|
if (!iadc->iadc_comp.ext_rsense) {
|
|
/* internal rsense */
|
|
*result = div64_s64(*result * 1000, temp_var);
|
|
}
|
|
|
|
if (iadc->iadc_comp.ext_rsense) {
|
|
/* external rsense */
|
|
sys_gain_coeff = (1000000 +
|
|
div64_s64(sys_gain_coeff, QPNP_COEFF_4));
|
|
temp_var = div64_s64(temp_var * sys_gain_coeff, 1000000);
|
|
*result = div64_s64(*result * 1000, temp_var);
|
|
}
|
|
pr_debug("%lld compensated into %lld, a: %d, b: %d, sys_gain: %lld\n",
|
|
old, *result, coeff_a, coeff_b, sys_gain_coeff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int32_t qpnp_iadc_comp_result(struct qpnp_iadc_chip *iadc, int64_t *result)
|
|
{
|
|
return qpnp_iadc_comp(result, iadc, iadc->die_temp);
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_comp_result);
|
|
|
|
static int qpnp_iadc_rds_trim_update_check(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
int rc = 0;
|
|
u8 trim2_val = 0, smbb_batt_trm_data = 0;
|
|
u8 smbb_batt_trm_cnst_rds = 0;
|
|
|
|
if (!iadc->rds_trim_default_check) {
|
|
pr_debug("No internal rds trim check needed\n");
|
|
return 0;
|
|
}
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_NOMINAL_RSENSE, &trim2_val);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc trim2_fullscale1 reg read failed %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = spmi_ext_register_readl(iadc->adc->spmi->ctrl, iadc->adc->slave,
|
|
iadc->batt_id_trim_cnst_rds, &smbb_batt_trm_data, 1);
|
|
if (rc < 0) {
|
|
pr_err("batt_id trim_cnst rds reg read failed %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
smbb_batt_trm_cnst_rds = smbb_batt_trm_data &
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK;
|
|
|
|
pr_debug("n_trim:0x%x smb_trm:0x%x\n", trim2_val, smbb_batt_trm_data);
|
|
|
|
if (iadc->rds_trim_default_type == QPNP_IADC_RDS_DEFAULT_TYPEA) {
|
|
|
|
if ((smbb_batt_trm_cnst_rds ==
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_2) &&
|
|
(trim2_val == QPNP_IADC1_USR_TRIM2_ADC_FULLSCALE1_CONST)) {
|
|
iadc->rsense_workaround_value =
|
|
QPNP_IADC_RSENSE_DEFAULT_VALUE;
|
|
iadc->default_internal_rsense = true;
|
|
}
|
|
} else if (iadc->rds_trim_default_type ==
|
|
QPNP_IADC_RDS_DEFAULT_TYPEB) {
|
|
if ((smbb_batt_trm_cnst_rds >=
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_2) &&
|
|
(trim2_val == QPNP_IADC1_USR_TRIM2_ADC_FULLSCALE1_CONST)) {
|
|
iadc->rsense_workaround_value =
|
|
QPNP_IADC_RSENSE_DEFAULT_VALUE;
|
|
iadc->default_internal_rsense = true;
|
|
} else if ((smbb_batt_trm_cnst_rds <
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_2) &&
|
|
(trim2_val ==
|
|
QPNP_IADC1_USR_TRIM2_ADC_FULLSCALE1_CONST)) {
|
|
if (iadc->iadc_comp.id == COMP_ID_GF) {
|
|
iadc->rsense_workaround_value =
|
|
QPNP_IADC_RSENSE_DEFAULT_TYPEB_GF;
|
|
iadc->default_internal_rsense = true;
|
|
} else if (iadc->iadc_comp.id == COMP_ID_SMIC) {
|
|
iadc->rsense_workaround_value =
|
|
QPNP_IADC_RSENSE_DEFAULT_TYPEB_SMIC;
|
|
iadc->default_internal_rsense = true;
|
|
}
|
|
}
|
|
} else if (iadc->rds_trim_default_type == QPNP_IADC_RDS_DEFAULT_TYPEC) {
|
|
|
|
if ((smbb_batt_trm_cnst_rds >
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_0) &&
|
|
(smbb_batt_trm_cnst_rds <=
|
|
SMBB_BAT_IF_TRIM_CNST_RDS_MASK_CONST_2) &&
|
|
(trim2_val == QPNP_IADC1_USR_TRIM2_ADC_FULLSCALE1_CONST)) {
|
|
iadc->rsense_workaround_value =
|
|
QPNP_IADC_RSENSE_DEFAULT_VALUE;
|
|
iadc->default_internal_rsense = true;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int32_t qpnp_iadc_comp_info(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
int rc = 0;
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_INT_TEST_VAL, &iadc->iadc_comp.id);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc comp id failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_REVISION2,
|
|
&iadc->iadc_comp.revision_dig_major);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc revision2 read failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_REVISION3,
|
|
&iadc->iadc_comp.revision_ana_minor);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc revision3 read failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_ATE_GAIN_CALIB_OFFSET,
|
|
&iadc->iadc_comp.sys_gain);
|
|
if (rc < 0) {
|
|
pr_err("full scale read failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
if (iadc->external_rsense)
|
|
iadc->iadc_comp.ext_rsense = true;
|
|
|
|
pr_debug("fab id = %u, revision_dig_major = %u, revision_ana_minor = %u sys gain = %u, external_rsense = %d\n",
|
|
iadc->iadc_comp.id,
|
|
iadc->iadc_comp.revision_dig_major,
|
|
iadc->iadc_comp.revision_ana_minor,
|
|
iadc->iadc_comp.sys_gain,
|
|
iadc->iadc_comp.ext_rsense);
|
|
return rc;
|
|
}
|
|
|
|
static int32_t qpnp_iadc_configure(struct qpnp_iadc_chip *iadc,
|
|
enum qpnp_iadc_channels channel,
|
|
uint16_t *raw_code, uint32_t mode_sel)
|
|
{
|
|
u8 qpnp_iadc_mode_reg = 0, qpnp_iadc_ch_sel_reg = 0;
|
|
u8 qpnp_iadc_conv_req = 0, qpnp_iadc_dig_param_reg = 0;
|
|
u8 status1 = 0;
|
|
uint32_t count = 0;
|
|
int32_t rc = 0;
|
|
|
|
qpnp_iadc_ch_sel_reg = channel;
|
|
|
|
qpnp_iadc_dig_param_reg |= iadc->adc->amux_prop->decimation <<
|
|
QPNP_IADC_DEC_RATIO_SEL;
|
|
if (iadc->iadc_mode_sel)
|
|
qpnp_iadc_mode_reg |= (QPNP_ADC_TRIM_EN | QPNP_VADC_SYNCH_EN);
|
|
else
|
|
qpnp_iadc_mode_reg |= QPNP_ADC_TRIM_EN;
|
|
|
|
qpnp_iadc_conv_req = QPNP_IADC_CONV_REQ;
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_MODE_CTL, qpnp_iadc_mode_reg);
|
|
if (rc) {
|
|
pr_err("qpnp adc read adc failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_ADC_CH_SEL_CTL,
|
|
qpnp_iadc_ch_sel_reg);
|
|
if (rc) {
|
|
pr_err("qpnp adc read adc failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_ADC_DIG_PARAM,
|
|
qpnp_iadc_dig_param_reg);
|
|
if (rc) {
|
|
pr_err("qpnp adc read adc failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_FAST_AVG_CTL,
|
|
iadc->adc->amux_prop->fast_avg_setup);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc fast averaging configure error\n");
|
|
return rc;
|
|
}
|
|
|
|
if (!iadc->iadc_poll_eoc)
|
|
INIT_COMPLETION(iadc->adc->adc_rslt_completion);
|
|
|
|
rc = qpnp_iadc_enable(iadc, true);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_CONV_REQ, qpnp_iadc_conv_req);
|
|
if (rc) {
|
|
pr_err("qpnp adc read adc failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
if (iadc->iadc_poll_eoc) {
|
|
while (status1 != QPNP_STATUS1_EOC) {
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_STATUS1, &status1);
|
|
if (rc < 0)
|
|
return rc;
|
|
status1 &= QPNP_STATUS1_REQ_STS_EOC_MASK;
|
|
usleep_range(QPNP_ADC_CONV_TIME_MIN,
|
|
QPNP_ADC_CONV_TIME_MAX);
|
|
count++;
|
|
if (count > QPNP_ADC_ERR_COUNT) {
|
|
pr_err("retry error exceeded\n");
|
|
rc = qpnp_iadc_status_debug(iadc);
|
|
if (rc < 0)
|
|
pr_err("IADC status debug failed\n");
|
|
rc = -EINVAL;
|
|
return rc;
|
|
}
|
|
}
|
|
} else {
|
|
rc = wait_for_completion_timeout(
|
|
&iadc->adc->adc_rslt_completion,
|
|
QPNP_ADC_COMPLETION_TIMEOUT);
|
|
if (!rc) {
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_STATUS1, &status1);
|
|
if (rc < 0)
|
|
return rc;
|
|
status1 &= QPNP_STATUS1_REQ_STS_EOC_MASK;
|
|
if (status1 == QPNP_STATUS1_EOC)
|
|
pr_debug("End of conversion status set\n");
|
|
else {
|
|
rc = qpnp_iadc_status_debug(iadc);
|
|
if (rc < 0) {
|
|
pr_err("status debug failed %d\n", rc);
|
|
return rc;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
rc = qpnp_iadc_read_conversion_result(iadc, raw_code);
|
|
if (rc) {
|
|
pr_err("qpnp adc read adc failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define IADC_CENTER 0xC000
|
|
#define IADC_READING_RESOLUTION_N 542535
|
|
#define IADC_READING_RESOLUTION_D 100000
|
|
static int32_t qpnp_convert_raw_offset_voltage(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
s64 numerator;
|
|
|
|
if ((iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw) == 0) {
|
|
pr_err("raw offset errors! raw_gain:0x%x and raw_offset:0x%x\n",
|
|
iadc->adc->calib.gain_raw, iadc->adc->calib.offset_raw);
|
|
return -EINVAL;
|
|
}
|
|
|
|
numerator = iadc->adc->calib.offset_raw - IADC_CENTER;
|
|
numerator *= IADC_READING_RESOLUTION_N;
|
|
iadc->adc->calib.offset_uv = div_s64(numerator,
|
|
IADC_READING_RESOLUTION_D);
|
|
|
|
numerator = iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw;
|
|
numerator *= IADC_READING_RESOLUTION_N;
|
|
|
|
iadc->adc->calib.gain_uv = div_s64(numerator,
|
|
IADC_READING_RESOLUTION_D);
|
|
|
|
pr_debug("gain_uv:%d offset_uv:%d\n",
|
|
iadc->adc->calib.gain_uv, iadc->adc->calib.offset_uv);
|
|
return 0;
|
|
}
|
|
|
|
#define IADC_IDEAL_RAW_GAIN 3291
|
|
int32_t qpnp_iadc_calibrate_for_trim(struct qpnp_iadc_chip *iadc,
|
|
bool batfet_closed)
|
|
{
|
|
uint8_t rslt_lsb, rslt_msb;
|
|
int32_t rc = 0, version = 0;
|
|
uint16_t raw_data;
|
|
uint32_t mode_sel = 0;
|
|
bool iadc_offset_ch_batfet_check;
|
|
|
|
if (qpnp_iadc_is_valid(iadc) < 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
mutex_lock(&iadc->adc->adc_lock);
|
|
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("acquiring iadc eoc wakelock\n");
|
|
pm_stay_awake(iadc->dev);
|
|
}
|
|
|
|
iadc->adc->amux_prop->decimation = DECIMATION_TYPE1;
|
|
iadc->adc->amux_prop->fast_avg_setup = ADC_FAST_AVG_SAMPLE_1;
|
|
|
|
rc = qpnp_iadc_configure(iadc, GAIN_CALIBRATION_17P857MV,
|
|
&raw_data, mode_sel);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
goto fail;
|
|
}
|
|
|
|
iadc->adc->calib.gain_raw = raw_data;
|
|
|
|
/*
|
|
* there is a features on PM8941 in the BMS where if the batfet is
|
|
* opened the BMS reads from INTERNAL_RSENSE (channel 0) actually go to
|
|
* OFFSET_CALIBRATION_CSP_CSN (channel 5). Hence if batfet is opened
|
|
* we have to calibrate based on OFFSET_CALIBRATION_CSP_CSN even for
|
|
* internal rsense.
|
|
*/
|
|
version = qpnp_adc_get_revid_version(iadc->dev);
|
|
if ((version == QPNP_REV_ID_8941_3_1) ||
|
|
(version == QPNP_REV_ID_8941_3_0) ||
|
|
(version == QPNP_REV_ID_8941_2_0))
|
|
iadc_offset_ch_batfet_check = true;
|
|
else
|
|
iadc_offset_ch_batfet_check = false;
|
|
|
|
if ((iadc_offset_ch_batfet_check && !batfet_closed) ||
|
|
(iadc->external_rsense)) {
|
|
/* external offset calculation */
|
|
rc = qpnp_iadc_configure(iadc, OFFSET_CALIBRATION_CSP_CSN,
|
|
&raw_data, mode_sel);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
goto fail;
|
|
}
|
|
} else {
|
|
/* internal offset calculation */
|
|
rc = qpnp_iadc_configure(iadc, OFFSET_CALIBRATION_CSP2_CSN2,
|
|
&raw_data, mode_sel);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
iadc->adc->calib.offset_raw = raw_data;
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc offset/gain calculation failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
if (iadc->iadc_comp.revision_dig_major == QPNP_IADC_PM8026_2_REV2
|
|
&& iadc->iadc_comp.revision_ana_minor ==
|
|
QPNP_IADC_PM8026_2_REV3)
|
|
iadc->adc->calib.gain_raw =
|
|
iadc->adc->calib.offset_raw + IADC_IDEAL_RAW_GAIN;
|
|
|
|
pr_debug("raw gain:0x%x, raw offset:0x%x\n",
|
|
iadc->adc->calib.gain_raw, iadc->adc->calib.offset_raw);
|
|
|
|
rc = qpnp_convert_raw_offset_voltage(iadc);
|
|
if (rc < 0) {
|
|
pr_err("qpnp raw_voltage conversion failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
rslt_msb = (raw_data & QPNP_RAW_CODE_16_BIT_MSB_MASK) >>
|
|
QPNP_BIT_SHIFT_8;
|
|
rslt_lsb = raw_data & QPNP_RAW_CODE_16_BIT_LSB_MASK;
|
|
|
|
pr_debug("trim values:lsb:0x%x and msb:0x%x\n", rslt_lsb, rslt_msb);
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_SEC_ACCESS,
|
|
QPNP_IADC_SEC_ACCESS_DATA);
|
|
if (rc < 0) {
|
|
pr_err("qpnp iadc configure error for sec access\n");
|
|
goto fail;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_MSB_OFFSET,
|
|
rslt_msb);
|
|
if (rc < 0) {
|
|
pr_err("qpnp iadc configure error for MSB write\n");
|
|
goto fail;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_SEC_ACCESS,
|
|
QPNP_IADC_SEC_ACCESS_DATA);
|
|
if (rc < 0) {
|
|
pr_err("qpnp iadc configure error for sec access\n");
|
|
goto fail;
|
|
}
|
|
|
|
rc = qpnp_iadc_write_reg(iadc, QPNP_IADC_LSB_OFFSET,
|
|
rslt_lsb);
|
|
if (rc < 0) {
|
|
pr_err("qpnp iadc configure error for LSB write\n");
|
|
goto fail;
|
|
}
|
|
fail:
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("releasing iadc eoc wakelock\n");
|
|
pm_relax(iadc->dev);
|
|
}
|
|
mutex_unlock(&iadc->adc->adc_lock);
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_calibrate_for_trim);
|
|
|
|
static void qpnp_iadc_work(struct work_struct *work)
|
|
{
|
|
struct qpnp_iadc_chip *iadc = container_of(work,
|
|
struct qpnp_iadc_chip, iadc_work.work);
|
|
int rc = 0;
|
|
|
|
if (!iadc->skip_auto_calibrations) {
|
|
rc = qpnp_iadc_calibrate_for_trim(iadc, true);
|
|
if (rc)
|
|
pr_debug("periodic IADC calibration failed\n");
|
|
}
|
|
|
|
schedule_delayed_work(&iadc->iadc_work,
|
|
round_jiffies_relative(msecs_to_jiffies
|
|
(QPNP_IADC_CALIB_SECONDS)));
|
|
return;
|
|
}
|
|
|
|
static int32_t qpnp_iadc_version_check(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
uint8_t revision;
|
|
int rc;
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_REVISION2, &revision);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
if (revision < QPNP_IADC_SUPPORTED_REVISION2) {
|
|
pr_err("IADC Version not supported\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct qpnp_iadc_chip *qpnp_get_iadc(struct device *dev, const char *name)
|
|
{
|
|
struct qpnp_iadc_chip *iadc;
|
|
struct device_node *node = NULL;
|
|
char prop_name[QPNP_MAX_PROP_NAME_LEN];
|
|
|
|
snprintf(prop_name, QPNP_MAX_PROP_NAME_LEN, "qcom,%s-iadc", name);
|
|
|
|
node = of_parse_phandle(dev->of_node, prop_name, 0);
|
|
if (node == NULL)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
list_for_each_entry(iadc, &qpnp_iadc_device_list, list)
|
|
if (iadc->adc->spmi->dev.of_node == node)
|
|
return iadc;
|
|
return ERR_PTR(-EPROBE_DEFER);
|
|
}
|
|
EXPORT_SYMBOL(qpnp_get_iadc);
|
|
|
|
int32_t qpnp_iadc_get_rsense(struct qpnp_iadc_chip *iadc, int32_t *rsense)
|
|
{
|
|
uint8_t rslt_rsense = 0;
|
|
int32_t rc = 0, sign_bit = 0;
|
|
|
|
if (qpnp_iadc_is_valid(iadc) < 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
if (iadc->external_rsense) {
|
|
*rsense = iadc->rsense;
|
|
} else if (iadc->default_internal_rsense) {
|
|
*rsense = iadc->rsense_workaround_value;
|
|
} else {
|
|
|
|
rc = qpnp_iadc_read_reg(iadc, QPNP_IADC_NOMINAL_RSENSE,
|
|
&rslt_rsense);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc rsense read failed with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
pr_debug("rsense:0%x\n", rslt_rsense);
|
|
|
|
if (rslt_rsense & QPNP_RSENSE_MSB_SIGN_CHECK)
|
|
sign_bit = 1;
|
|
|
|
rslt_rsense &= ~QPNP_RSENSE_MSB_SIGN_CHECK;
|
|
|
|
if (sign_bit)
|
|
*rsense = QPNP_IADC_INTERNAL_RSENSE_N_OHMS_FACTOR -
|
|
(rslt_rsense * QPNP_IADC_RSENSE_LSB_N_OHMS_PER_BIT);
|
|
else
|
|
*rsense = QPNP_IADC_INTERNAL_RSENSE_N_OHMS_FACTOR +
|
|
(rslt_rsense * QPNP_IADC_RSENSE_LSB_N_OHMS_PER_BIT);
|
|
}
|
|
pr_debug("rsense value is %d\n", *rsense);
|
|
|
|
if (*rsense == 0)
|
|
pr_err("incorrect rsens value:%d rslt_rsense:%d\n",
|
|
*rsense, rslt_rsense);
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_get_rsense);
|
|
|
|
static int32_t qpnp_check_pmic_temp(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
struct qpnp_vadc_result result_pmic_therm;
|
|
int64_t die_temp_offset;
|
|
int rc = 0;
|
|
|
|
rc = qpnp_vadc_read(iadc->vadc_dev, DIE_TEMP, &result_pmic_therm);
|
|
if (rc < 0)
|
|
return rc;
|
|
|
|
die_temp_offset = result_pmic_therm.physical -
|
|
iadc->die_temp;
|
|
if (die_temp_offset < 0)
|
|
die_temp_offset = -die_temp_offset;
|
|
|
|
if (die_temp_offset > QPNP_IADC_DIE_TEMP_CALIB_OFFSET) {
|
|
iadc->die_temp = result_pmic_therm.physical;
|
|
if (!iadc->skip_auto_calibrations) {
|
|
rc = qpnp_iadc_calibrate_for_trim(iadc, true);
|
|
if (rc)
|
|
pr_err("IADC calibration failed rc = %d\n", rc);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int32_t qpnp_iadc_read(struct qpnp_iadc_chip *iadc,
|
|
enum qpnp_iadc_channels channel,
|
|
struct qpnp_iadc_result *result)
|
|
{
|
|
int32_t rc, rsense_n_ohms, sign = 0, num, mode_sel = 0;
|
|
int32_t rsense_u_ohms = 0;
|
|
int64_t result_current;
|
|
uint16_t raw_data;
|
|
int dt_index = 0;
|
|
|
|
if (qpnp_iadc_is_valid(iadc) < 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
if ((iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw) == 0) {
|
|
pr_err("raw offset errors! run iadc calibration again\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
rc = qpnp_check_pmic_temp(iadc);
|
|
if (rc) {
|
|
pr_err("Error checking pmic therm temp\n");
|
|
return rc;
|
|
}
|
|
|
|
mutex_lock(&iadc->adc->adc_lock);
|
|
|
|
while (((enum qpnp_iadc_channels)
|
|
iadc->adc->adc_channels[dt_index].channel_num
|
|
!= channel) && (dt_index < iadc->max_channels_available))
|
|
dt_index++;
|
|
|
|
if (dt_index >= iadc->max_channels_available) {
|
|
pr_err("not a valid IADC channel\n");
|
|
rc = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
iadc->adc->amux_prop->decimation =
|
|
iadc->adc->adc_channels[dt_index].adc_decimation;
|
|
iadc->adc->amux_prop->fast_avg_setup =
|
|
iadc->adc->adc_channels[dt_index].fast_avg_setup;
|
|
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("acquiring iadc eoc wakelock\n");
|
|
pm_stay_awake(iadc->dev);
|
|
}
|
|
|
|
rc = qpnp_iadc_configure(iadc, channel, &raw_data, mode_sel);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
goto fail;
|
|
}
|
|
|
|
rc = qpnp_iadc_get_rsense(iadc, &rsense_n_ohms);
|
|
pr_debug("current raw:0%x and rsense:%d\n",
|
|
raw_data, rsense_n_ohms);
|
|
rsense_u_ohms = rsense_n_ohms/1000;
|
|
num = raw_data - iadc->adc->calib.offset_raw;
|
|
if (num < 0) {
|
|
sign = 1;
|
|
num = -num;
|
|
}
|
|
|
|
result->result_uv = (num * QPNP_ADC_GAIN_NV)/
|
|
(iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw);
|
|
result_current = result->result_uv;
|
|
result_current *= QPNP_IADC_NANO_VOLTS_FACTOR;
|
|
/* Intentional fall through. Process the result w/o comp */
|
|
do_div(result_current, rsense_u_ohms);
|
|
|
|
if (sign) {
|
|
result->result_uv = -result->result_uv;
|
|
result_current = -result_current;
|
|
}
|
|
result_current *= -1;
|
|
rc = qpnp_iadc_comp_result(iadc, &result_current);
|
|
if (rc < 0)
|
|
pr_err("Error during compensating the IADC\n");
|
|
rc = 0;
|
|
result_current *= -1;
|
|
|
|
result->result_ua = (int32_t) result_current;
|
|
fail:
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("releasing iadc eoc wakelock\n");
|
|
pm_relax(iadc->dev);
|
|
}
|
|
mutex_unlock(&iadc->adc->adc_lock);
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_read);
|
|
|
|
int32_t qpnp_iadc_get_gain_and_offset(struct qpnp_iadc_chip *iadc,
|
|
struct qpnp_iadc_calib *result)
|
|
{
|
|
int rc;
|
|
|
|
if (qpnp_iadc_is_valid(iadc) < 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
rc = qpnp_check_pmic_temp(iadc);
|
|
if (rc) {
|
|
pr_err("Error checking pmic therm temp\n");
|
|
return rc;
|
|
}
|
|
|
|
mutex_lock(&iadc->adc->adc_lock);
|
|
result->gain_raw = iadc->adc->calib.gain_raw;
|
|
result->ideal_gain_nv = QPNP_ADC_GAIN_NV;
|
|
result->gain_uv = iadc->adc->calib.gain_uv;
|
|
result->offset_raw = iadc->adc->calib.offset_raw;
|
|
result->ideal_offset_uv =
|
|
QPNP_OFFSET_CALIBRATION_SHORT_CADC_LEADS_IDEAL;
|
|
result->offset_uv = iadc->adc->calib.offset_uv;
|
|
pr_debug("raw gain:0%x, raw offset:0%x\n",
|
|
result->gain_raw, result->offset_raw);
|
|
pr_debug("gain_uv:%d offset_uv:%d\n",
|
|
result->gain_uv, result->offset_uv);
|
|
mutex_unlock(&iadc->adc->adc_lock);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_get_gain_and_offset);
|
|
|
|
int qpnp_iadc_skip_calibration(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
iadc->skip_auto_calibrations = true;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_skip_calibration);
|
|
|
|
int qpnp_iadc_resume_calibration(struct qpnp_iadc_chip *iadc)
|
|
{
|
|
iadc->skip_auto_calibrations = false;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_resume_calibration);
|
|
|
|
int32_t qpnp_iadc_vadc_sync_read(struct qpnp_iadc_chip *iadc,
|
|
enum qpnp_iadc_channels i_channel, struct qpnp_iadc_result *i_result,
|
|
enum qpnp_vadc_channels v_channel, struct qpnp_vadc_result *v_result)
|
|
{
|
|
int rc = 0, mode_sel = 0, num = 0, rsense_n_ohms = 0, sign = 0;
|
|
int dt_index = 0;
|
|
uint16_t raw_data;
|
|
int32_t rsense_u_ohms = 0;
|
|
int64_t result_current;
|
|
|
|
if (qpnp_iadc_is_valid(iadc) < 0)
|
|
return -EPROBE_DEFER;
|
|
|
|
if ((iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw) == 0) {
|
|
pr_err("raw offset errors! run iadc calibration again\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_lock(&iadc->adc->adc_lock);
|
|
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("acquiring iadc eoc wakelock\n");
|
|
pm_stay_awake(iadc->dev);
|
|
}
|
|
|
|
iadc->iadc_mode_sel = true;
|
|
|
|
rc = qpnp_vadc_iadc_sync_request(iadc->vadc_dev, v_channel);
|
|
if (rc) {
|
|
pr_err("Configuring VADC failed\n");
|
|
goto fail;
|
|
}
|
|
|
|
while (((enum qpnp_iadc_channels)
|
|
iadc->adc->adc_channels[dt_index].channel_num
|
|
!= i_channel) && (dt_index < iadc->max_channels_available))
|
|
dt_index++;
|
|
|
|
if (dt_index >= iadc->max_channels_available) {
|
|
pr_err("not a valid IADC channel\n");
|
|
rc = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
iadc->adc->amux_prop->decimation =
|
|
iadc->adc->adc_channels[dt_index].adc_decimation;
|
|
iadc->adc->amux_prop->fast_avg_setup =
|
|
iadc->adc->adc_channels[dt_index].fast_avg_setup;
|
|
|
|
rc = qpnp_iadc_configure(iadc, i_channel, &raw_data, mode_sel);
|
|
if (rc < 0) {
|
|
pr_err("qpnp adc result read failed with %d\n", rc);
|
|
goto fail_release_vadc;
|
|
}
|
|
|
|
rc = qpnp_iadc_get_rsense(iadc, &rsense_n_ohms);
|
|
pr_debug("current raw:0%x and rsense:%d\n",
|
|
raw_data, rsense_n_ohms);
|
|
rsense_u_ohms = rsense_n_ohms/1000;
|
|
num = raw_data - iadc->adc->calib.offset_raw;
|
|
if (num < 0) {
|
|
sign = 1;
|
|
num = -num;
|
|
}
|
|
|
|
i_result->result_uv = (num * QPNP_ADC_GAIN_NV)/
|
|
(iadc->adc->calib.gain_raw - iadc->adc->calib.offset_raw);
|
|
result_current = i_result->result_uv;
|
|
result_current *= QPNP_IADC_NANO_VOLTS_FACTOR;
|
|
/* Intentional fall through. Process the result w/o comp */
|
|
if (!rsense_u_ohms) {
|
|
pr_err("rsense error=%d\n", rsense_u_ohms);
|
|
goto fail_release_vadc;
|
|
}
|
|
|
|
do_div(result_current, rsense_u_ohms);
|
|
|
|
if (sign) {
|
|
i_result->result_uv = -i_result->result_uv;
|
|
result_current = -result_current;
|
|
}
|
|
result_current *= -1;
|
|
rc = qpnp_iadc_comp_result(iadc, &result_current);
|
|
if (rc < 0)
|
|
pr_err("Error during compensating the IADC\n");
|
|
rc = 0;
|
|
result_current *= -1;
|
|
|
|
i_result->result_ua = (int32_t) result_current;
|
|
|
|
fail_release_vadc:
|
|
rc = qpnp_vadc_iadc_sync_complete_request(iadc->vadc_dev, v_channel,
|
|
v_result);
|
|
if (rc)
|
|
pr_err("Releasing VADC failed\n");
|
|
fail:
|
|
iadc->iadc_mode_sel = false;
|
|
|
|
if (iadc->iadc_poll_eoc) {
|
|
pr_debug("releasing iadc eoc wakelock\n");
|
|
pm_relax(iadc->dev);
|
|
}
|
|
mutex_unlock(&iadc->adc->adc_lock);
|
|
|
|
return rc;
|
|
}
|
|
EXPORT_SYMBOL(qpnp_iadc_vadc_sync_read);
|
|
|
|
static ssize_t qpnp_iadc_show(struct device *dev,
|
|
struct device_attribute *devattr, char *buf)
|
|
{
|
|
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
|
|
struct qpnp_iadc_chip *iadc = dev_get_drvdata(dev);
|
|
struct qpnp_iadc_result result;
|
|
int rc = -1;
|
|
|
|
rc = qpnp_iadc_read(iadc, attr->index, &result);
|
|
|
|
if (rc)
|
|
return 0;
|
|
|
|
return snprintf(buf, QPNP_ADC_HWMON_NAME_LENGTH,
|
|
"Result:%d\n", result.result_ua);
|
|
}
|
|
|
|
static struct sensor_device_attribute qpnp_adc_attr =
|
|
SENSOR_ATTR(NULL, S_IRUGO, qpnp_iadc_show, NULL, 0);
|
|
|
|
static int32_t qpnp_iadc_init_hwmon(struct qpnp_iadc_chip *iadc,
|
|
struct spmi_device *spmi)
|
|
{
|
|
struct device_node *child;
|
|
struct device_node *node = spmi->dev.of_node;
|
|
int rc = 0, i = 0, channel;
|
|
|
|
for_each_child_of_node(node, child) {
|
|
channel = iadc->adc->adc_channels[i].channel_num;
|
|
qpnp_adc_attr.index = iadc->adc->adc_channels[i].channel_num;
|
|
qpnp_adc_attr.dev_attr.attr.name =
|
|
iadc->adc->adc_channels[i].name;
|
|
memcpy(&iadc->sens_attr[i], &qpnp_adc_attr,
|
|
sizeof(qpnp_adc_attr));
|
|
sysfs_attr_init(&iadc->sens_attr[i].dev_attr.attr);
|
|
rc = device_create_file(&spmi->dev,
|
|
&iadc->sens_attr[i].dev_attr);
|
|
if (rc) {
|
|
dev_err(&spmi->dev,
|
|
"device_create_file failed for dev %s\n",
|
|
iadc->adc->adc_channels[i].name);
|
|
goto hwmon_err_sens;
|
|
}
|
|
i++;
|
|
}
|
|
|
|
return 0;
|
|
hwmon_err_sens:
|
|
pr_err("Init HWMON failed for qpnp_iadc with %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
static int qpnp_iadc_probe(struct spmi_device *spmi)
|
|
{
|
|
struct qpnp_iadc_chip *iadc;
|
|
struct qpnp_adc_drv *adc_qpnp;
|
|
struct device_node *node = spmi->dev.of_node;
|
|
struct device_node *child;
|
|
struct resource *res;
|
|
int rc, count_adc_channel_list = 0, i = 0;
|
|
|
|
for_each_child_of_node(node, child)
|
|
count_adc_channel_list++;
|
|
|
|
if (!count_adc_channel_list) {
|
|
pr_err("No channel listing\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
iadc = devm_kzalloc(&spmi->dev, sizeof(struct qpnp_iadc_chip) +
|
|
(sizeof(struct sensor_device_attribute) *
|
|
count_adc_channel_list), GFP_KERNEL);
|
|
if (!iadc) {
|
|
dev_err(&spmi->dev, "Unable to allocate memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
adc_qpnp = devm_kzalloc(&spmi->dev, sizeof(struct qpnp_adc_drv),
|
|
GFP_KERNEL);
|
|
if (!adc_qpnp) {
|
|
dev_err(&spmi->dev, "Unable to allocate memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
iadc->dev = &(spmi->dev);
|
|
iadc->adc = adc_qpnp;
|
|
|
|
rc = qpnp_adc_get_devicetree_data(spmi, iadc->adc);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "failed to read device tree\n");
|
|
return rc;
|
|
}
|
|
|
|
res = spmi_get_resource_byname(spmi, NULL, IORESOURCE_MEM,
|
|
"batt-id-trim-cnst-rds");
|
|
if (!res) {
|
|
dev_err(&spmi->dev, "failed to read batt_id trim register\n");
|
|
return -EINVAL;
|
|
}
|
|
iadc->batt_id_trim_cnst_rds = res->start;
|
|
rc = of_property_read_u32(node, "qcom,use-default-rds-trim",
|
|
&iadc->rds_trim_default_type);
|
|
if (rc)
|
|
pr_debug("No trim workaround needed\n");
|
|
else {
|
|
pr_debug("Use internal RDS trim workaround\n");
|
|
iadc->rds_trim_default_check = true;
|
|
}
|
|
|
|
iadc->vadc_dev = qpnp_get_vadc(&spmi->dev, "iadc");
|
|
if (IS_ERR(iadc->vadc_dev)) {
|
|
rc = PTR_ERR(iadc->vadc_dev);
|
|
if (rc != -EPROBE_DEFER)
|
|
pr_err("vadc property missing, rc=%d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
mutex_init(&iadc->adc->adc_lock);
|
|
|
|
rc = of_property_read_u32(node, "qcom,rsense",
|
|
&iadc->rsense);
|
|
if (rc)
|
|
pr_debug("Defaulting to internal rsense\n");
|
|
else {
|
|
pr_debug("Use external rsense\n");
|
|
iadc->external_rsense = true;
|
|
}
|
|
|
|
iadc->iadc_poll_eoc = of_property_read_bool(node,
|
|
"qcom,iadc-poll-eoc");
|
|
if (!iadc->iadc_poll_eoc) {
|
|
rc = devm_request_irq(&spmi->dev, iadc->adc->adc_irq_eoc,
|
|
qpnp_iadc_isr, IRQF_TRIGGER_RISING,
|
|
"qpnp_iadc_interrupt", iadc);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "failed to request adc irq\n");
|
|
return rc;
|
|
} else
|
|
enable_irq_wake(iadc->adc->adc_irq_eoc);
|
|
}
|
|
|
|
rc = qpnp_iadc_init_hwmon(iadc, spmi);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "failed to initialize qpnp hwmon adc\n");
|
|
return rc;
|
|
}
|
|
iadc->iadc_hwmon = hwmon_device_register(&iadc->adc->spmi->dev);
|
|
|
|
rc = qpnp_iadc_version_check(iadc);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "IADC version not supported\n");
|
|
goto fail;
|
|
}
|
|
|
|
iadc->max_channels_available = count_adc_channel_list;
|
|
INIT_WORK(&iadc->trigger_completion_work, qpnp_iadc_trigger_completion);
|
|
INIT_DELAYED_WORK(&iadc->iadc_work, qpnp_iadc_work);
|
|
rc = qpnp_iadc_comp_info(iadc);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "abstracting IADC comp info failed!\n");
|
|
goto fail;
|
|
}
|
|
|
|
rc = qpnp_iadc_rds_trim_update_check(iadc);
|
|
if (rc) {
|
|
dev_err(&spmi->dev, "Rds trim update failed!\n");
|
|
goto fail;
|
|
}
|
|
|
|
dev_set_drvdata(&spmi->dev, iadc);
|
|
list_add(&iadc->list, &qpnp_iadc_device_list);
|
|
rc = qpnp_iadc_calibrate_for_trim(iadc, true);
|
|
if (rc)
|
|
dev_err(&spmi->dev, "failed to calibrate for USR trim\n");
|
|
|
|
if (iadc->iadc_poll_eoc)
|
|
device_init_wakeup(iadc->dev, 1);
|
|
|
|
schedule_delayed_work(&iadc->iadc_work,
|
|
round_jiffies_relative(msecs_to_jiffies
|
|
(QPNP_IADC_CALIB_SECONDS)));
|
|
return 0;
|
|
fail:
|
|
for_each_child_of_node(node, child) {
|
|
device_remove_file(&spmi->dev,
|
|
&iadc->sens_attr[i].dev_attr);
|
|
i++;
|
|
}
|
|
hwmon_device_unregister(iadc->iadc_hwmon);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int qpnp_iadc_remove(struct spmi_device *spmi)
|
|
{
|
|
struct qpnp_iadc_chip *iadc = dev_get_drvdata(&spmi->dev);
|
|
struct device_node *node = spmi->dev.of_node;
|
|
struct device_node *child;
|
|
int i = 0;
|
|
|
|
cancel_delayed_work(&iadc->iadc_work);
|
|
for_each_child_of_node(node, child) {
|
|
device_remove_file(&spmi->dev,
|
|
&iadc->sens_attr[i].dev_attr);
|
|
i++;
|
|
}
|
|
hwmon_device_unregister(iadc->iadc_hwmon);
|
|
if (iadc->iadc_poll_eoc)
|
|
pm_relax(iadc->dev);
|
|
dev_set_drvdata(&spmi->dev, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id qpnp_iadc_match_table[] = {
|
|
{ .compatible = "qcom,qpnp-iadc",
|
|
},
|
|
{}
|
|
};
|
|
|
|
static struct spmi_driver qpnp_iadc_driver = {
|
|
.driver = {
|
|
.name = "qcom,qpnp-iadc",
|
|
.of_match_table = qpnp_iadc_match_table,
|
|
},
|
|
.probe = qpnp_iadc_probe,
|
|
.remove = qpnp_iadc_remove,
|
|
};
|
|
|
|
static int __init qpnp_iadc_init(void)
|
|
{
|
|
return spmi_driver_register(&qpnp_iadc_driver);
|
|
}
|
|
module_init(qpnp_iadc_init);
|
|
|
|
static void __exit qpnp_iadc_exit(void)
|
|
{
|
|
spmi_driver_unregister(&qpnp_iadc_driver);
|
|
}
|
|
module_exit(qpnp_iadc_exit);
|
|
|
|
MODULE_DESCRIPTION("QPNP PMIC current ADC driver");
|
|
MODULE_LICENSE("GPL v2");
|