![Hans de Goede](/assets/img/avatar_default.png)
Setting the irq_enable bits is taken care of by the irq chip when we request the irqs and the driver should not be meddling with the irq?_en registers itself. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
801 lines
21 KiB
C
801 lines
21 KiB
C
/*
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* axp288_fuel_gauge.c - Xpower AXP288 PMIC Fuel Gauge Driver
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*
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* Copyright (C) 2014 Intel Corporation
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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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 as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/regmap.h>
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#include <linux/jiffies.h>
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#include <linux/interrupt.h>
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#include <linux/workqueue.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/iio/consumer.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <asm/unaligned.h>
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#define CHRG_STAT_BAT_SAFE_MODE (1 << 3)
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#define CHRG_STAT_BAT_VALID (1 << 4)
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#define CHRG_STAT_BAT_PRESENT (1 << 5)
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#define CHRG_STAT_CHARGING (1 << 6)
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#define CHRG_STAT_PMIC_OTP (1 << 7)
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#define CHRG_CCCV_CC_MASK 0xf /* 4 bits */
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#define CHRG_CCCV_CC_BIT_POS 0
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#define CHRG_CCCV_CC_OFFSET 200 /* 200mA */
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#define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */
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#define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */
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#define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */
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#define CHRG_CCCV_CV_BIT_POS 5
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#define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */
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#define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */
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#define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */
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#define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */
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#define CHRG_CCCV_CHG_EN (1 << 7)
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#define FG_CNTL_OCV_ADJ_STAT (1 << 2)
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#define FG_CNTL_OCV_ADJ_EN (1 << 3)
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#define FG_CNTL_CAP_ADJ_STAT (1 << 4)
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#define FG_CNTL_CAP_ADJ_EN (1 << 5)
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#define FG_CNTL_CC_EN (1 << 6)
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#define FG_CNTL_GAUGE_EN (1 << 7)
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#define FG_15BIT_WORD_VALID (1 << 15)
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#define FG_15BIT_VAL_MASK 0x7fff
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#define FG_REP_CAP_VALID (1 << 7)
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#define FG_REP_CAP_VAL_MASK 0x7F
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#define FG_DES_CAP1_VALID (1 << 7)
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#define FG_DES_CAP_RES_LSB 1456 /* 1.456mAhr */
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#define FG_DES_CC_RES_LSB 1456 /* 1.456mAhr */
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#define FG_OCV_CAP_VALID (1 << 7)
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#define FG_OCV_CAP_VAL_MASK 0x7F
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#define FG_CC_CAP_VALID (1 << 7)
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#define FG_CC_CAP_VAL_MASK 0x7F
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#define FG_LOW_CAP_THR1_MASK 0xf0 /* 5% tp 20% */
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#define FG_LOW_CAP_THR1_VAL 0xa0 /* 15 perc */
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#define FG_LOW_CAP_THR2_MASK 0x0f /* 0% to 15% */
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#define FG_LOW_CAP_WARN_THR 14 /* 14 perc */
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#define FG_LOW_CAP_CRIT_THR 4 /* 4 perc */
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#define FG_LOW_CAP_SHDN_THR 0 /* 0 perc */
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#define STATUS_MON_DELAY_JIFFIES (HZ * 60) /*60 sec */
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#define NR_RETRY_CNT 3
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#define DEV_NAME "axp288_fuel_gauge"
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/* 1.1mV per LSB expressed in uV */
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#define VOLTAGE_FROM_ADC(a) ((a * 11) / 10)
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/* properties converted to uV, uA */
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#define PROP_VOLT(a) ((a) * 1000)
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#define PROP_CURR(a) ((a) * 1000)
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#define AXP288_FG_INTR_NUM 6
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enum {
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QWBTU_IRQ = 0,
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WBTU_IRQ,
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QWBTO_IRQ,
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WBTO_IRQ,
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WL2_IRQ,
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WL1_IRQ,
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};
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struct axp288_fg_info {
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struct platform_device *pdev;
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struct regmap *regmap;
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struct regmap_irq_chip_data *regmap_irqc;
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int irq[AXP288_FG_INTR_NUM];
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struct power_supply *bat;
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struct mutex lock;
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int status;
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int max_volt;
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struct delayed_work status_monitor;
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struct dentry *debug_file;
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};
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static enum power_supply_property fuel_gauge_props[] = {
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POWER_SUPPLY_PROP_STATUS,
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POWER_SUPPLY_PROP_PRESENT,
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POWER_SUPPLY_PROP_HEALTH,
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POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
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POWER_SUPPLY_PROP_VOLTAGE_NOW,
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POWER_SUPPLY_PROP_VOLTAGE_OCV,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_CAPACITY,
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POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN,
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POWER_SUPPLY_PROP_TECHNOLOGY,
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POWER_SUPPLY_PROP_CHARGE_FULL,
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POWER_SUPPLY_PROP_CHARGE_NOW,
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};
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static int fuel_gauge_reg_readb(struct axp288_fg_info *info, int reg)
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{
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int ret, i;
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unsigned int val;
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for (i = 0; i < NR_RETRY_CNT; i++) {
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ret = regmap_read(info->regmap, reg, &val);
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if (ret == -EBUSY)
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continue;
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else
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break;
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}
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if (ret < 0) {
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dev_err(&info->pdev->dev, "axp288 reg read err:%d\n", ret);
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return ret;
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}
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return val;
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}
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static int fuel_gauge_reg_writeb(struct axp288_fg_info *info, int reg, u8 val)
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{
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int ret;
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ret = regmap_write(info->regmap, reg, (unsigned int)val);
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if (ret < 0)
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dev_err(&info->pdev->dev, "axp288 reg write err:%d\n", ret);
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return ret;
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}
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static int fuel_gauge_read_15bit_word(struct axp288_fg_info *info, int reg)
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{
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unsigned char buf[2];
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int ret;
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ret = regmap_bulk_read(info->regmap, reg, buf, 2);
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if (ret < 0) {
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dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
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reg, ret);
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return ret;
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}
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ret = get_unaligned_be16(buf);
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if (!(ret & FG_15BIT_WORD_VALID)) {
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dev_err(&info->pdev->dev, "Error reg 0x%02x contents not valid\n",
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reg);
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return -ENXIO;
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}
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return ret & FG_15BIT_VAL_MASK;
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}
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static int fuel_gauge_read_12bit_word(struct axp288_fg_info *info, int reg)
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{
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unsigned char buf[2];
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int ret;
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ret = regmap_bulk_read(info->regmap, reg, buf, 2);
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if (ret < 0) {
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dev_err(&info->pdev->dev, "Error reading reg 0x%02x err: %d\n",
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reg, ret);
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return ret;
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}
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/* 12-bit data values have upper 8 bits in buf[0], lower 4 in buf[1] */
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return (buf[0] << 4) | ((buf[1] >> 4) & 0x0f);
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}
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static int pmic_read_adc_val(const char *name, int *raw_val,
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struct axp288_fg_info *info)
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{
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int ret, val = 0;
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struct iio_channel *indio_chan;
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indio_chan = iio_channel_get(NULL, name);
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if (IS_ERR_OR_NULL(indio_chan)) {
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ret = PTR_ERR(indio_chan);
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goto exit;
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}
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ret = iio_read_channel_raw(indio_chan, &val);
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if (ret < 0) {
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dev_err(&info->pdev->dev,
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"IIO channel read error: %x, %x\n", ret, val);
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goto err_exit;
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}
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dev_dbg(&info->pdev->dev, "adc raw val=%x\n", val);
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*raw_val = val;
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err_exit:
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iio_channel_release(indio_chan);
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exit:
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return ret;
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}
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#ifdef CONFIG_DEBUG_FS
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static int fuel_gauge_debug_show(struct seq_file *s, void *data)
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{
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struct axp288_fg_info *info = s->private;
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int raw_val, ret;
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seq_printf(s, " PWR_STATUS[%02x] : %02x\n",
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AXP20X_PWR_INPUT_STATUS,
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fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS));
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seq_printf(s, "PWR_OP_MODE[%02x] : %02x\n",
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AXP20X_PWR_OP_MODE,
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fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE));
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seq_printf(s, " CHRG_CTRL1[%02x] : %02x\n",
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AXP20X_CHRG_CTRL1,
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fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1));
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seq_printf(s, " VLTF[%02x] : %02x\n",
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AXP20X_V_LTF_DISCHRG,
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fuel_gauge_reg_readb(info, AXP20X_V_LTF_DISCHRG));
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seq_printf(s, " VHTF[%02x] : %02x\n",
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AXP20X_V_HTF_DISCHRG,
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fuel_gauge_reg_readb(info, AXP20X_V_HTF_DISCHRG));
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seq_printf(s, " CC_CTRL[%02x] : %02x\n",
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AXP20X_CC_CTRL,
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fuel_gauge_reg_readb(info, AXP20X_CC_CTRL));
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seq_printf(s, "BATTERY CAP[%02x] : %02x\n",
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AXP20X_FG_RES,
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fuel_gauge_reg_readb(info, AXP20X_FG_RES));
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seq_printf(s, " FG_RDC1[%02x] : %02x\n",
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AXP288_FG_RDC1_REG,
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fuel_gauge_reg_readb(info, AXP288_FG_RDC1_REG));
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seq_printf(s, " FG_RDC0[%02x] : %02x\n",
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AXP288_FG_RDC0_REG,
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fuel_gauge_reg_readb(info, AXP288_FG_RDC0_REG));
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seq_printf(s, " FG_OCV[%02x] : %04x\n",
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AXP288_FG_OCVH_REG,
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fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG));
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seq_printf(s, " FG_DES_CAP[%02x] : %04x\n",
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AXP288_FG_DES_CAP1_REG,
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fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG));
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seq_printf(s, " FG_CC_MTR[%02x] : %04x\n",
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AXP288_FG_CC_MTR1_REG,
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fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG));
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seq_printf(s, " FG_OCV_CAP[%02x] : %02x\n",
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AXP288_FG_OCV_CAP_REG,
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fuel_gauge_reg_readb(info, AXP288_FG_OCV_CAP_REG));
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seq_printf(s, " FG_CC_CAP[%02x] : %02x\n",
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AXP288_FG_CC_CAP_REG,
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fuel_gauge_reg_readb(info, AXP288_FG_CC_CAP_REG));
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seq_printf(s, " FG_LOW_CAP[%02x] : %02x\n",
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AXP288_FG_LOW_CAP_REG,
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fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG));
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seq_printf(s, "TUNING_CTL0[%02x] : %02x\n",
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AXP288_FG_TUNE0,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE0));
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seq_printf(s, "TUNING_CTL1[%02x] : %02x\n",
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AXP288_FG_TUNE1,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE1));
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seq_printf(s, "TUNING_CTL2[%02x] : %02x\n",
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AXP288_FG_TUNE2,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE2));
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seq_printf(s, "TUNING_CTL3[%02x] : %02x\n",
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AXP288_FG_TUNE3,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE3));
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seq_printf(s, "TUNING_CTL4[%02x] : %02x\n",
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AXP288_FG_TUNE4,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE4));
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seq_printf(s, "TUNING_CTL5[%02x] : %02x\n",
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AXP288_FG_TUNE5,
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fuel_gauge_reg_readb(info, AXP288_FG_TUNE5));
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ret = pmic_read_adc_val("axp288-batt-temp", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-batttemp : %d\n", raw_val);
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ret = pmic_read_adc_val("axp288-pmic-temp", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-pmictemp : %d\n", raw_val);
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ret = pmic_read_adc_val("axp288-system-temp", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-systtemp : %d\n", raw_val);
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ret = pmic_read_adc_val("axp288-chrg-curr", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-chrgcurr : %d\n", raw_val);
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ret = pmic_read_adc_val("axp288-chrg-d-curr", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-dchrgcur : %d\n", raw_val);
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ret = pmic_read_adc_val("axp288-batt-volt", &raw_val, info);
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if (ret >= 0)
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seq_printf(s, "axp288-battvolt : %d\n", raw_val);
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return 0;
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}
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static int debug_open(struct inode *inode, struct file *file)
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{
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return single_open(file, fuel_gauge_debug_show, inode->i_private);
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}
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static const struct file_operations fg_debug_fops = {
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.open = debug_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
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{
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info->debug_file = debugfs_create_file("fuelgauge", 0666, NULL,
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info, &fg_debug_fops);
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}
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static void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
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{
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debugfs_remove(info->debug_file);
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}
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#else
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static inline void fuel_gauge_create_debugfs(struct axp288_fg_info *info)
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{
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}
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static inline void fuel_gauge_remove_debugfs(struct axp288_fg_info *info)
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{
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}
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#endif
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static void fuel_gauge_get_status(struct axp288_fg_info *info)
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{
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int pwr_stat, ret;
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int charge, discharge;
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pwr_stat = fuel_gauge_reg_readb(info, AXP20X_PWR_INPUT_STATUS);
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if (pwr_stat < 0) {
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dev_err(&info->pdev->dev,
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"PWR STAT read failed:%d\n", pwr_stat);
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return;
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}
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ret = pmic_read_adc_val("axp288-chrg-curr", &charge, info);
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if (ret < 0) {
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dev_err(&info->pdev->dev,
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"ADC charge current read failed:%d\n", ret);
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return;
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}
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ret = pmic_read_adc_val("axp288-chrg-d-curr", &discharge, info);
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if (ret < 0) {
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dev_err(&info->pdev->dev,
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"ADC discharge current read failed:%d\n", ret);
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return;
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}
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if (charge > 0)
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info->status = POWER_SUPPLY_STATUS_CHARGING;
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else if (discharge > 0)
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info->status = POWER_SUPPLY_STATUS_DISCHARGING;
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else {
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if (pwr_stat & CHRG_STAT_BAT_PRESENT)
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info->status = POWER_SUPPLY_STATUS_FULL;
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else
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info->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
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}
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}
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static int fuel_gauge_get_vbatt(struct axp288_fg_info *info, int *vbatt)
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{
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int ret = 0, raw_val;
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ret = pmic_read_adc_val("axp288-batt-volt", &raw_val, info);
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if (ret < 0)
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goto vbatt_read_fail;
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*vbatt = VOLTAGE_FROM_ADC(raw_val);
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vbatt_read_fail:
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return ret;
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}
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static int fuel_gauge_get_current(struct axp288_fg_info *info, int *cur)
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{
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int ret, value = 0;
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int charge, discharge;
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ret = pmic_read_adc_val("axp288-chrg-curr", &charge, info);
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if (ret < 0)
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goto current_read_fail;
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ret = pmic_read_adc_val("axp288-chrg-d-curr", &discharge, info);
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if (ret < 0)
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goto current_read_fail;
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if (charge > 0)
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value = charge;
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else if (discharge > 0)
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value = -1 * discharge;
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*cur = value;
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current_read_fail:
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return ret;
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}
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static int fuel_gauge_get_vocv(struct axp288_fg_info *info, int *vocv)
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{
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int ret;
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|
|
ret = fuel_gauge_read_12bit_word(info, AXP288_FG_OCVH_REG);
|
|
if (ret >= 0)
|
|
*vocv = VOLTAGE_FROM_ADC(ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fuel_gauge_battery_health(struct axp288_fg_info *info)
|
|
{
|
|
int ret, vocv, health = POWER_SUPPLY_HEALTH_UNKNOWN;
|
|
|
|
ret = fuel_gauge_get_vocv(info, &vocv);
|
|
if (ret < 0)
|
|
goto health_read_fail;
|
|
|
|
if (vocv > info->max_volt)
|
|
health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
|
|
else
|
|
health = POWER_SUPPLY_HEALTH_GOOD;
|
|
|
|
health_read_fail:
|
|
return health;
|
|
}
|
|
|
|
static int fuel_gauge_get_property(struct power_supply *ps,
|
|
enum power_supply_property prop,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct axp288_fg_info *info = power_supply_get_drvdata(ps);
|
|
int ret = 0, value;
|
|
|
|
mutex_lock(&info->lock);
|
|
switch (prop) {
|
|
case POWER_SUPPLY_PROP_STATUS:
|
|
fuel_gauge_get_status(info);
|
|
val->intval = info->status;
|
|
break;
|
|
case POWER_SUPPLY_PROP_HEALTH:
|
|
val->intval = fuel_gauge_battery_health(info);
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
|
ret = fuel_gauge_get_vbatt(info, &value);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
val->intval = PROP_VOLT(value);
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
|
|
ret = fuel_gauge_get_vocv(info, &value);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
val->intval = PROP_VOLT(value);
|
|
break;
|
|
case POWER_SUPPLY_PROP_CURRENT_NOW:
|
|
ret = fuel_gauge_get_current(info, &value);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
val->intval = PROP_CURR(value);
|
|
break;
|
|
case POWER_SUPPLY_PROP_PRESENT:
|
|
ret = fuel_gauge_reg_readb(info, AXP20X_PWR_OP_MODE);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
|
|
if (ret & CHRG_STAT_BAT_PRESENT)
|
|
val->intval = 1;
|
|
else
|
|
val->intval = 0;
|
|
break;
|
|
case POWER_SUPPLY_PROP_CAPACITY:
|
|
ret = fuel_gauge_reg_readb(info, AXP20X_FG_RES);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
|
|
if (!(ret & FG_REP_CAP_VALID))
|
|
dev_err(&info->pdev->dev,
|
|
"capacity measurement not valid\n");
|
|
val->intval = (ret & FG_REP_CAP_VAL_MASK);
|
|
break;
|
|
case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
|
|
ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
val->intval = (ret & 0x0f);
|
|
break;
|
|
case POWER_SUPPLY_PROP_TECHNOLOGY:
|
|
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
|
|
break;
|
|
case POWER_SUPPLY_PROP_CHARGE_NOW:
|
|
ret = fuel_gauge_read_15bit_word(info, AXP288_FG_CC_MTR1_REG);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
|
|
val->intval = ret * FG_DES_CAP_RES_LSB;
|
|
break;
|
|
case POWER_SUPPLY_PROP_CHARGE_FULL:
|
|
ret = fuel_gauge_read_15bit_word(info, AXP288_FG_DES_CAP1_REG);
|
|
if (ret < 0)
|
|
goto fuel_gauge_read_err;
|
|
|
|
val->intval = ret * FG_DES_CAP_RES_LSB;
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
|
|
val->intval = PROP_VOLT(info->max_volt);
|
|
break;
|
|
default:
|
|
mutex_unlock(&info->lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mutex_unlock(&info->lock);
|
|
return 0;
|
|
|
|
fuel_gauge_read_err:
|
|
mutex_unlock(&info->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int fuel_gauge_set_property(struct power_supply *ps,
|
|
enum power_supply_property prop,
|
|
const union power_supply_propval *val)
|
|
{
|
|
struct axp288_fg_info *info = power_supply_get_drvdata(ps);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&info->lock);
|
|
switch (prop) {
|
|
case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
|
|
if ((val->intval < 0) || (val->intval > 15)) {
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
ret = fuel_gauge_reg_readb(info, AXP288_FG_LOW_CAP_REG);
|
|
if (ret < 0)
|
|
break;
|
|
ret &= 0xf0;
|
|
ret |= (val->intval & 0xf);
|
|
ret = fuel_gauge_reg_writeb(info, AXP288_FG_LOW_CAP_REG, ret);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&info->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int fuel_gauge_property_is_writeable(struct power_supply *psy,
|
|
enum power_supply_property psp)
|
|
{
|
|
int ret;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_CAPACITY_ALERT_MIN:
|
|
ret = 1;
|
|
break;
|
|
default:
|
|
ret = 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void fuel_gauge_status_monitor(struct work_struct *work)
|
|
{
|
|
struct axp288_fg_info *info = container_of(work,
|
|
struct axp288_fg_info, status_monitor.work);
|
|
|
|
fuel_gauge_get_status(info);
|
|
power_supply_changed(info->bat);
|
|
schedule_delayed_work(&info->status_monitor, STATUS_MON_DELAY_JIFFIES);
|
|
}
|
|
|
|
static irqreturn_t fuel_gauge_thread_handler(int irq, void *dev)
|
|
{
|
|
struct axp288_fg_info *info = dev;
|
|
int i;
|
|
|
|
for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
|
|
if (info->irq[i] == irq)
|
|
break;
|
|
}
|
|
|
|
if (i >= AXP288_FG_INTR_NUM) {
|
|
dev_warn(&info->pdev->dev, "spurious interrupt!!\n");
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
switch (i) {
|
|
case QWBTU_IRQ:
|
|
dev_info(&info->pdev->dev,
|
|
"Quit Battery under temperature in work mode IRQ (QWBTU)\n");
|
|
break;
|
|
case WBTU_IRQ:
|
|
dev_info(&info->pdev->dev,
|
|
"Battery under temperature in work mode IRQ (WBTU)\n");
|
|
break;
|
|
case QWBTO_IRQ:
|
|
dev_info(&info->pdev->dev,
|
|
"Quit Battery over temperature in work mode IRQ (QWBTO)\n");
|
|
break;
|
|
case WBTO_IRQ:
|
|
dev_info(&info->pdev->dev,
|
|
"Battery over temperature in work mode IRQ (WBTO)\n");
|
|
break;
|
|
case WL2_IRQ:
|
|
dev_info(&info->pdev->dev, "Low Batt Warning(2) INTR\n");
|
|
break;
|
|
case WL1_IRQ:
|
|
dev_info(&info->pdev->dev, "Low Batt Warning(1) INTR\n");
|
|
break;
|
|
default:
|
|
dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n");
|
|
}
|
|
|
|
power_supply_changed(info->bat);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void fuel_gauge_external_power_changed(struct power_supply *psy)
|
|
{
|
|
struct axp288_fg_info *info = power_supply_get_drvdata(psy);
|
|
|
|
power_supply_changed(info->bat);
|
|
}
|
|
|
|
static const struct power_supply_desc fuel_gauge_desc = {
|
|
.name = DEV_NAME,
|
|
.type = POWER_SUPPLY_TYPE_BATTERY,
|
|
.properties = fuel_gauge_props,
|
|
.num_properties = ARRAY_SIZE(fuel_gauge_props),
|
|
.get_property = fuel_gauge_get_property,
|
|
.set_property = fuel_gauge_set_property,
|
|
.property_is_writeable = fuel_gauge_property_is_writeable,
|
|
.external_power_changed = fuel_gauge_external_power_changed,
|
|
};
|
|
|
|
static void fuel_gauge_init_irq(struct axp288_fg_info *info)
|
|
{
|
|
int ret, i, pirq;
|
|
|
|
for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
|
|
pirq = platform_get_irq(info->pdev, i);
|
|
info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq);
|
|
if (info->irq[i] < 0) {
|
|
dev_warn(&info->pdev->dev,
|
|
"regmap_irq get virq failed for IRQ %d: %d\n",
|
|
pirq, info->irq[i]);
|
|
info->irq[i] = -1;
|
|
goto intr_failed;
|
|
}
|
|
ret = request_threaded_irq(info->irq[i],
|
|
NULL, fuel_gauge_thread_handler,
|
|
IRQF_ONESHOT, DEV_NAME, info);
|
|
if (ret) {
|
|
dev_warn(&info->pdev->dev,
|
|
"request irq failed for IRQ %d: %d\n",
|
|
pirq, info->irq[i]);
|
|
info->irq[i] = -1;
|
|
goto intr_failed;
|
|
} else {
|
|
dev_info(&info->pdev->dev, "HW IRQ %d -> VIRQ %d\n",
|
|
pirq, info->irq[i]);
|
|
}
|
|
}
|
|
return;
|
|
|
|
intr_failed:
|
|
for (; i > 0; i--) {
|
|
free_irq(info->irq[i - 1], info);
|
|
info->irq[i - 1] = -1;
|
|
}
|
|
}
|
|
|
|
static int axp288_fuel_gauge_probe(struct platform_device *pdev)
|
|
{
|
|
int ret = 0;
|
|
struct axp288_fg_info *info;
|
|
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
|
|
struct power_supply_config psy_cfg = {};
|
|
|
|
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->pdev = pdev;
|
|
info->regmap = axp20x->regmap;
|
|
info->regmap_irqc = axp20x->regmap_irqc;
|
|
info->status = POWER_SUPPLY_STATUS_UNKNOWN;
|
|
|
|
platform_set_drvdata(pdev, info);
|
|
|
|
mutex_init(&info->lock);
|
|
INIT_DELAYED_WORK(&info->status_monitor, fuel_gauge_status_monitor);
|
|
|
|
ret = fuel_gauge_reg_readb(info, AXP288_FG_DES_CAP1_REG);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!(ret & FG_DES_CAP1_VALID)) {
|
|
dev_err(&pdev->dev, "axp288 not configured by firmware\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ret = fuel_gauge_reg_readb(info, AXP20X_CHRG_CTRL1);
|
|
if (ret < 0)
|
|
return ret;
|
|
switch ((ret & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS) {
|
|
case CHRG_CCCV_CV_4100MV:
|
|
info->max_volt = 4100;
|
|
break;
|
|
case CHRG_CCCV_CV_4150MV:
|
|
info->max_volt = 4150;
|
|
break;
|
|
case CHRG_CCCV_CV_4200MV:
|
|
info->max_volt = 4200;
|
|
break;
|
|
case CHRG_CCCV_CV_4350MV:
|
|
info->max_volt = 4350;
|
|
break;
|
|
}
|
|
|
|
psy_cfg.drv_data = info;
|
|
info->bat = power_supply_register(&pdev->dev, &fuel_gauge_desc, &psy_cfg);
|
|
if (IS_ERR(info->bat)) {
|
|
ret = PTR_ERR(info->bat);
|
|
dev_err(&pdev->dev, "failed to register battery: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
fuel_gauge_create_debugfs(info);
|
|
fuel_gauge_init_irq(info);
|
|
schedule_delayed_work(&info->status_monitor, STATUS_MON_DELAY_JIFFIES);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id axp288_fg_id_table[] = {
|
|
{ .name = DEV_NAME },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, axp288_fg_id_table);
|
|
|
|
static int axp288_fuel_gauge_remove(struct platform_device *pdev)
|
|
{
|
|
struct axp288_fg_info *info = platform_get_drvdata(pdev);
|
|
int i;
|
|
|
|
cancel_delayed_work_sync(&info->status_monitor);
|
|
power_supply_unregister(info->bat);
|
|
fuel_gauge_remove_debugfs(info);
|
|
|
|
for (i = 0; i < AXP288_FG_INTR_NUM; i++)
|
|
if (info->irq[i] >= 0)
|
|
free_irq(info->irq[i], info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver axp288_fuel_gauge_driver = {
|
|
.probe = axp288_fuel_gauge_probe,
|
|
.remove = axp288_fuel_gauge_remove,
|
|
.id_table = axp288_fg_id_table,
|
|
.driver = {
|
|
.name = DEV_NAME,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(axp288_fuel_gauge_driver);
|
|
|
|
MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>");
|
|
MODULE_AUTHOR("Todd Brandt <todd.e.brandt@linux.intel.com>");
|
|
MODULE_DESCRIPTION("Xpower AXP288 Fuel Gauge Driver");
|
|
MODULE_LICENSE("GPL");
|