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|
/*
* axp288_charger.c - X-power AXP288 PMIC Charger driver
*
* Copyright (C) 2016-2017 Hans de Goede <hdegoede@redhat.com>
* Copyright (C) 2014 Intel Corporation
* Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/acpi.h>
#include <linux/bitops.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/regmap.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/usb/otg.h>
#include <linux/notifier.h>
#include <linux/power_supply.h>
#include <linux/property.h>
#include <linux/mfd/axp20x.h>
#include <linux/extcon.h>
#define PS_STAT_VBUS_TRIGGER BIT(0)
#define PS_STAT_BAT_CHRG_DIR BIT(2)
#define PS_STAT_VBAT_ABOVE_VHOLD BIT(3)
#define PS_STAT_VBUS_VALID BIT(4)
#define PS_STAT_VBUS_PRESENT BIT(5)
#define CHRG_STAT_BAT_SAFE_MODE BIT(3)
#define CHRG_STAT_BAT_VALID BIT(4)
#define CHRG_STAT_BAT_PRESENT BIT(5)
#define CHRG_STAT_CHARGING BIT(6)
#define CHRG_STAT_PMIC_OTP BIT(7)
#define VBUS_ISPOUT_CUR_LIM_MASK 0x03
#define VBUS_ISPOUT_CUR_LIM_BIT_POS 0
#define VBUS_ISPOUT_CUR_LIM_900MA 0x0 /* 900mA */
#define VBUS_ISPOUT_CUR_LIM_1500MA 0x1 /* 1500mA */
#define VBUS_ISPOUT_CUR_LIM_2000MA 0x2 /* 2000mA */
#define VBUS_ISPOUT_CUR_NO_LIM 0x3 /* 2500mA */
#define VBUS_ISPOUT_VHOLD_SET_MASK 0x31
#define VBUS_ISPOUT_VHOLD_SET_BIT_POS 0x3
#define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */
#define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */
#define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */
#define VBUS_ISPOUT_VBUS_PATH_DIS BIT(7)
#define CHRG_CCCV_CC_MASK 0xf /* 4 bits */
#define CHRG_CCCV_CC_BIT_POS 0
#define CHRG_CCCV_CC_OFFSET 200 /* 200mA */
#define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */
#define CHRG_CCCV_ITERM_20P BIT(4) /* 20% of CC */
#define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */
#define CHRG_CCCV_CV_BIT_POS 5
#define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */
#define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */
#define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */
#define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */
#define CHRG_CCCV_CHG_EN BIT(7)
#define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */
#define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */
#define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */
#define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */
#define CNTL2_CHGLED_TYPEB BIT(4)
#define CNTL2_CHG_OUT_TURNON BIT(5)
#define CNTL2_PC_TIMEOUT_MASK 0xC0
#define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */
#define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */
#define CNTL2_PC_TIMEOUT_70MINS 0x3
#define CHRG_ILIM_TEMP_LOOP_EN BIT(3)
#define CHRG_VBUS_ILIM_MASK 0xf0
#define CHRG_VBUS_ILIM_BIT_POS 4
#define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */
#define CHRG_VBUS_ILIM_500MA 0x1 /* 500mA */
#define CHRG_VBUS_ILIM_900MA 0x2 /* 900mA */
#define CHRG_VBUS_ILIM_1500MA 0x3 /* 1500mA */
#define CHRG_VBUS_ILIM_2000MA 0x4 /* 2000mA */
#define CHRG_VBUS_ILIM_2500MA 0x5 /* 2500mA */
#define CHRG_VBUS_ILIM_3000MA 0x6 /* 3000mA */
#define CHRG_VBUS_ILIM_3500MA 0x7 /* 3500mA */
#define CHRG_VBUS_ILIM_4000MA 0x8 /* 4000mA */
#define CHRG_VLTFC_0C 0xA5 /* 0 DegC */
#define CHRG_VHTFC_45C 0x1F /* 45 DegC */
#define FG_CNTL_OCV_ADJ_EN BIT(3)
#define CV_4100MV 4100 /* 4100mV */
#define CV_4150MV 4150 /* 4150mV */
#define CV_4200MV 4200 /* 4200mV */
#define CV_4350MV 4350 /* 4350mV */
#define AXP288_EXTCON_DEV_NAME "axp288_extcon"
#define USB_HOST_EXTCON_HID "INT3496"
#define USB_HOST_EXTCON_NAME "INT3496:00"
enum {
VBUS_OV_IRQ = 0,
CHARGE_DONE_IRQ,
CHARGE_CHARGING_IRQ,
BAT_SAFE_QUIT_IRQ,
BAT_SAFE_ENTER_IRQ,
QCBTU_IRQ,
CBTU_IRQ,
QCBTO_IRQ,
CBTO_IRQ,
CHRG_INTR_END,
};
struct axp288_chrg_info {
struct platform_device *pdev;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
int irq[CHRG_INTR_END];
struct power_supply *psy_usb;
/* OTG/Host mode */
struct {
struct work_struct work;
struct extcon_dev *cable;
struct notifier_block id_nb;
bool id_short;
} otg;
/* SDP/CDP/DCP USB charging cable notifications */
struct {
struct extcon_dev *edev;
struct notifier_block nb;
struct work_struct work;
} cable;
int cc;
int cv;
int max_cc;
int max_cv;
};
static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc)
{
u8 reg_val;
int ret;
if (cc < CHRG_CCCV_CC_OFFSET)
cc = CHRG_CCCV_CC_OFFSET;
else if (cc > info->max_cc)
cc = info->max_cc;
reg_val = (cc - CHRG_CCCV_CC_OFFSET) / CHRG_CCCV_CC_LSB_RES;
cc = (reg_val * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET;
reg_val = reg_val << CHRG_CCCV_CC_BIT_POS;
ret = regmap_update_bits(info->regmap,
AXP20X_CHRG_CTRL1,
CHRG_CCCV_CC_MASK, reg_val);
if (ret >= 0)
info->cc = cc;
return ret;
}
static inline int axp288_charger_set_cv(struct axp288_chrg_info *info, int cv)
{
u8 reg_val;
int ret;
if (cv <= CV_4100MV) {
reg_val = CHRG_CCCV_CV_4100MV;
cv = CV_4100MV;
} else if (cv <= CV_4150MV) {
reg_val = CHRG_CCCV_CV_4150MV;
cv = CV_4150MV;
} else if (cv <= CV_4200MV) {
reg_val = CHRG_CCCV_CV_4200MV;
cv = CV_4200MV;
} else {
reg_val = CHRG_CCCV_CV_4350MV;
cv = CV_4350MV;
}
reg_val = reg_val << CHRG_CCCV_CV_BIT_POS;
ret = regmap_update_bits(info->regmap,
AXP20X_CHRG_CTRL1,
CHRG_CCCV_CV_MASK, reg_val);
if (ret >= 0)
info->cv = cv;
return ret;
}
static int axp288_charger_get_vbus_inlmt(struct axp288_chrg_info *info)
{
unsigned int val;
int ret;
ret = regmap_read(info->regmap, AXP20X_CHRG_BAK_CTRL, &val);
if (ret < 0)
return ret;
val >>= CHRG_VBUS_ILIM_BIT_POS;
switch (val) {
case CHRG_VBUS_ILIM_100MA:
return 100000;
case CHRG_VBUS_ILIM_500MA:
return 500000;
case CHRG_VBUS_ILIM_900MA:
return 900000;
case CHRG_VBUS_ILIM_1500MA:
return 1500000;
case CHRG_VBUS_ILIM_2000MA:
return 2000000;
case CHRG_VBUS_ILIM_2500MA:
return 2500000;
case CHRG_VBUS_ILIM_3000MA:
return 3000000;
case CHRG_VBUS_ILIM_3500MA:
return 3500000;
default:
/* All b1xxx values map to 4000 mA */
return 4000000;
}
}
static inline int axp288_charger_set_vbus_inlmt(struct axp288_chrg_info *info,
int inlmt)
|