^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * TI LP8788 MFD - battery charger driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2012 Texas Instruments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author: Milo(Woogyom) Kim <milo.kim@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/iio/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/irqdomain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mfd/lp8788.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/power_supply.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* register address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define LP8788_CHG_STATUS 0x07
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define LP8788_CHG_IDCIN 0x13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define LP8788_CHG_IBATT 0x14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define LP8788_CHG_VTERM 0x15
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define LP8788_CHG_EOC 0x16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) /* mask/shift bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define LP8788_CHG_INPUT_STATE_M 0x03 /* Addr 07h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define LP8788_CHG_STATE_M 0x3C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define LP8788_CHG_STATE_S 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define LP8788_NO_BATT_M BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define LP8788_BAD_BATT_M BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define LP8788_CHG_IBATT_M 0x1F /* Addr 14h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define LP8788_CHG_VTERM_M 0x0F /* Addr 15h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define LP8788_CHG_EOC_LEVEL_M 0x30 /* Addr 16h */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define LP8788_CHG_EOC_LEVEL_S 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define LP8788_CHG_EOC_TIME_M 0x0E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define LP8788_CHG_EOC_TIME_S 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define LP8788_CHG_EOC_MODE_M BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define LP8788_CHARGER_NAME "charger"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define LP8788_BATTERY_NAME "main_batt"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define LP8788_CHG_START 0x11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define LP8788_CHG_END 0x1C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define LP8788_ISEL_MAX 23
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define LP8788_ISEL_STEP 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define LP8788_VTERM_MIN 4100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define LP8788_VTERM_STEP 25
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define LP8788_MAX_BATT_CAPACITY 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define LP8788_MAX_CHG_IRQS 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) enum lp8788_charging_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) LP8788_OFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) LP8788_WARM_UP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) LP8788_LOW_INPUT = 0x3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) LP8788_PRECHARGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) LP8788_CC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) LP8788_CV,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) LP8788_MAINTENANCE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) LP8788_BATTERY_FAULT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) LP8788_SYSTEM_SUPPORT = 0xC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) LP8788_HIGH_CURRENT = 0xF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) LP8788_MAX_CHG_STATE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) enum lp8788_charger_adc_sel {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) LP8788_VBATT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) LP8788_BATT_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) LP8788_NUM_CHG_ADC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) enum lp8788_charger_input_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) LP8788_SYSTEM_SUPPLY = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) LP8788_FULL_FUNCTION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * struct lp8788_chg_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @which : lp8788 interrupt id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @virq : Linux IRQ number from irq_domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct lp8788_chg_irq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) enum lp8788_int_id which;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * struct lp8788_charger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @lp : used for accessing the registers of mfd lp8788 device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @charger : power supply driver for the battery charger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @battery : power supply driver for the battery
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * @charger_work : work queue for charger input interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @chan : iio channels for getting adc values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * eg) battery voltage, capacity and temperature
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @irqs : charger dedicated interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * @num_irqs : total numbers of charger interrupts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @pdata : charger platform specific data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct lp8788_charger {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct lp8788 *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct power_supply *charger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct power_supply *battery;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct work_struct charger_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct iio_channel *chan[LP8788_NUM_CHG_ADC];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) struct lp8788_chg_irq irqs[LP8788_MAX_CHG_IRQS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int num_irqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct lp8788_charger_platform_data *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static char *battery_supplied_to[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) LP8788_BATTERY_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static enum power_supply_property lp8788_charger_prop[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) POWER_SUPPLY_PROP_ONLINE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) POWER_SUPPLY_PROP_CURRENT_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static enum power_supply_property lp8788_battery_prop[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) POWER_SUPPLY_PROP_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) POWER_SUPPLY_PROP_HEALTH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) POWER_SUPPLY_PROP_PRESENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) POWER_SUPPLY_PROP_VOLTAGE_NOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) POWER_SUPPLY_PROP_CAPACITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) POWER_SUPPLY_PROP_TEMP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) static bool lp8788_is_charger_detected(struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) data &= LP8788_CHG_INPUT_STATE_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return data == LP8788_SYSTEM_SUPPLY || data == LP8788_FULL_FUNCTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static int lp8788_charger_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) struct lp8788_charger *pchg = dev_get_drvdata(psy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) u8 read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) case POWER_SUPPLY_PROP_ONLINE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) val->intval = lp8788_is_charger_detected(pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) case POWER_SUPPLY_PROP_CURRENT_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) lp8788_read_byte(pchg->lp, LP8788_CHG_IDCIN, &read);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) val->intval = LP8788_ISEL_STEP *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) (min_t(int, read, LP8788_ISEL_MAX) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static int lp8788_get_battery_status(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) enum lp8788_charging_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) switch (state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) case LP8788_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) case LP8788_PRECHARGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) case LP8788_CC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) case LP8788_CV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) case LP8788_HIGH_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) val->intval = POWER_SUPPLY_STATUS_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) case LP8788_MAINTENANCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) val->intval = POWER_SUPPLY_STATUS_FULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static int lp8788_get_battery_health(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (data & LP8788_NO_BATT_M)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) else if (data & LP8788_BAD_BATT_M)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) val->intval = POWER_SUPPLY_HEALTH_DEAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) val->intval = POWER_SUPPLY_HEALTH_GOOD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) static int lp8788_get_battery_present(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) val->intval = !(data & LP8788_NO_BATT_M);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int lp8788_get_vbatt_adc(struct lp8788_charger *pchg, int *result)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct iio_channel *channel = pchg->chan[LP8788_VBATT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (!channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return iio_read_channel_processed(channel, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int lp8788_get_battery_voltage(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return lp8788_get_vbatt_adc(pchg, &val->intval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int lp8788_get_battery_capacity(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct lp8788 *lp = pchg->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) struct lp8788_charger_platform_data *pdata = pchg->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) unsigned int max_vbatt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) int vbatt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) enum lp8788_charging_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) max_vbatt = pdata->max_vbatt_mv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (max_vbatt == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) ret = lp8788_read_byte(lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) if (state == LP8788_MAINTENANCE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) val->intval = LP8788_MAX_BATT_CAPACITY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) ret = lp8788_get_vbatt_adc(pchg, &vbatt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) val->intval = (vbatt * LP8788_MAX_BATT_CAPACITY) / max_vbatt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) val->intval = min(val->intval, LP8788_MAX_BATT_CAPACITY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static int lp8788_get_battery_temperature(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct iio_channel *channel = pchg->chan[LP8788_BATT_TEMP];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) int result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) if (!channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ret = iio_read_channel_processed(channel, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) /* unit: 0.1 'C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) val->intval = result * 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static int lp8788_get_battery_charging_current(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) u8 read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) lp8788_read_byte(pchg->lp, LP8788_CHG_IBATT, &read);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) read &= LP8788_CHG_IBATT_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) val->intval = LP8788_ISEL_STEP *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) (min_t(int, read, LP8788_ISEL_MAX) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static int lp8788_get_charging_termination_voltage(struct lp8788_charger *pchg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) u8 read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) lp8788_read_byte(pchg->lp, LP8788_CHG_VTERM, &read);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) read &= LP8788_CHG_VTERM_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) val->intval = LP8788_VTERM_MIN + LP8788_VTERM_STEP * read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static int lp8788_battery_get_property(struct power_supply *psy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) enum power_supply_property psp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) union power_supply_propval *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct lp8788_charger *pchg = dev_get_drvdata(psy->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) switch (psp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) case POWER_SUPPLY_PROP_STATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return lp8788_get_battery_status(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) case POWER_SUPPLY_PROP_HEALTH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return lp8788_get_battery_health(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) case POWER_SUPPLY_PROP_PRESENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) return lp8788_get_battery_present(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) case POWER_SUPPLY_PROP_VOLTAGE_NOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) return lp8788_get_battery_voltage(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) case POWER_SUPPLY_PROP_CAPACITY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return lp8788_get_battery_capacity(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) case POWER_SUPPLY_PROP_TEMP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) return lp8788_get_battery_temperature(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return lp8788_get_battery_charging_current(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return lp8788_get_charging_termination_voltage(pchg, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static inline bool lp8788_is_valid_charger_register(u8 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return addr >= LP8788_CHG_START && addr <= LP8788_CHG_END;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) static int lp8788_update_charger_params(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct lp8788 *lp = pchg->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct lp8788_charger_platform_data *pdata = pchg->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct lp8788_chg_param *param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) if (!pdata || !pdata->chg_params) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) dev_info(&pdev->dev, "skip updating charger parameters\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* settting charging parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) for (i = 0; i < pdata->num_chg_params; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) param = pdata->chg_params + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) if (lp8788_is_valid_charger_register(param->addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) ret = lp8788_write_byte(lp, param->addr, param->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) static const struct power_supply_desc lp8788_psy_charger_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) .name = LP8788_CHARGER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) .type = POWER_SUPPLY_TYPE_MAINS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) .properties = lp8788_charger_prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) .num_properties = ARRAY_SIZE(lp8788_charger_prop),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) .get_property = lp8788_charger_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) static const struct power_supply_desc lp8788_psy_battery_desc = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) .name = LP8788_BATTERY_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) .type = POWER_SUPPLY_TYPE_BATTERY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) .properties = lp8788_battery_prop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) .num_properties = ARRAY_SIZE(lp8788_battery_prop),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) .get_property = lp8788_battery_get_property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static void lp8788_psy_unregister(struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) power_supply_unregister(pchg->battery);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) power_supply_unregister(pchg->charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) static void lp8788_charger_event(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) struct lp8788_charger *pchg =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) container_of(work, struct lp8788_charger, charger_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) struct lp8788_charger_platform_data *pdata = pchg->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) enum lp8788_charger_event event = lp8788_is_charger_detected(pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) pdata->charger_event(pchg->lp, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static bool lp8788_find_irq_id(struct lp8788_charger *pchg, int virq, int *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) for (i = 0; i < pchg->num_irqs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (pchg->irqs[i].virq == virq) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) *id = pchg->irqs[i].which;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) static irqreturn_t lp8788_charger_irq_thread(int virq, void *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct lp8788_charger *pchg = ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) struct lp8788_charger_platform_data *pdata = pchg->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) int id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) if (!lp8788_find_irq_id(pchg, virq, &id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return IRQ_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) switch (id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) case LP8788_INT_CHG_INPUT_STATE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) case LP8788_INT_CHG_STATE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) case LP8788_INT_EOC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) case LP8788_INT_BATT_LOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) case LP8788_INT_NO_BATT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) power_supply_changed(pchg->charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) power_supply_changed(pchg->battery);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) /* report charger dectection event if used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) goto irq_handled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (pdata->charger_event && id == LP8788_INT_CHG_INPUT_STATE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) schedule_work(&pchg->charger_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) irq_handled:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static int lp8788_set_irqs(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) struct lp8788_charger *pchg, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) struct resource *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct irq_domain *irqdm = pchg->lp->irqdm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) int irq_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) int irq_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) int virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) int nr_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) /* no error even if no irq resource */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) if (!r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) irq_start = r->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) irq_end = r->end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) for (i = irq_start; i <= irq_end; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) nr_irq = pchg->num_irqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) virq = irq_create_mapping(irqdm, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) pchg->irqs[nr_irq].virq = virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) pchg->irqs[nr_irq].which = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) pchg->num_irqs++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) ret = request_threaded_irq(virq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) lp8788_charger_irq_thread,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) IRQF_ONESHOT, name, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (i <= irq_end)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) goto err_free_irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) err_free_irq:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) for (i = 0; i < pchg->num_irqs; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) free_irq(pchg->irqs[i].virq, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) static int lp8788_irq_register(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) const char *name[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) LP8788_CHG_IRQ, LP8788_PRSW_IRQ, LP8788_BATT_IRQ
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) INIT_WORK(&pchg->charger_work, lp8788_charger_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) pchg->num_irqs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) for (i = 0; i < ARRAY_SIZE(name); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) ret = lp8788_set_irqs(pdev, pchg, name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) dev_warn(&pdev->dev, "irq setup failed: %s\n", name[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (pchg->num_irqs > LP8788_MAX_CHG_IRQS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) dev_err(&pdev->dev, "invalid total number of irqs: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) pchg->num_irqs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static void lp8788_irq_unregister(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) int irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) for (i = 0; i < pchg->num_irqs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) irq = pchg->irqs[i].virq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) if (!irq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) free_irq(irq, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) static void lp8788_setup_adc_channel(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) struct lp8788_charger_platform_data *pdata = pchg->pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) struct iio_channel *chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (!pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) /* ADC channel for battery voltage */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) chan = devm_iio_channel_get(dev, pdata->adc_vbatt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) pchg->chan[LP8788_VBATT] = IS_ERR(chan) ? NULL : chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) /* ADC channel for battery temperature */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) chan = devm_iio_channel_get(dev, pdata->adc_batt_temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) pchg->chan[LP8788_BATT_TEMP] = IS_ERR(chan) ? NULL : chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static ssize_t lp8788_show_charger_status(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct lp8788_charger *pchg = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) enum lp8788_charging_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) static const char * const desc[LP8788_MAX_CHG_STATE] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) [LP8788_OFF] = "CHARGER OFF",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) [LP8788_WARM_UP] = "WARM UP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) [LP8788_LOW_INPUT] = "LOW INPUT STATE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) [LP8788_PRECHARGE] = "CHARGING - PRECHARGE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) [LP8788_CC] = "CHARGING - CC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) [LP8788_CV] = "CHARGING - CV",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) [LP8788_MAINTENANCE] = "NO CHARGING - MAINTENANCE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) [LP8788_BATTERY_FAULT] = "BATTERY FAULT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) [LP8788_SYSTEM_SUPPORT] = "SYSTEM SUPPORT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) [LP8788_HIGH_CURRENT] = "HIGH CURRENT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) u8 data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) return scnprintf(buf, PAGE_SIZE, "%s\n", desc[state]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) static ssize_t lp8788_show_eoc_time(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) struct lp8788_charger *pchg = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) static const char * const stime[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) "400ms", "5min", "10min", "15min",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) "20min", "25min", "30min", "No timeout"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) val = (val & LP8788_CHG_EOC_TIME_M) >> LP8788_CHG_EOC_TIME_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) return scnprintf(buf, PAGE_SIZE, "End Of Charge Time: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) stime[val]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) static ssize_t lp8788_show_eoc_level(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) struct lp8788_charger *pchg = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) static const char * const abs_level[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) "25mA", "49mA", "75mA", "98mA"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) static const char * const relative_level[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) "5%", "10%", "15%", "20%"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) const char *level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) u8 val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) mode = val & LP8788_CHG_EOC_MODE_M;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) val = (val & LP8788_CHG_EOC_LEVEL_M) >> LP8788_CHG_EOC_LEVEL_S;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) level = mode ? abs_level[val] : relative_level[val];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) return scnprintf(buf, PAGE_SIZE, "End Of Charge Level: %s\n", level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) static DEVICE_ATTR(eoc_time, S_IRUSR, lp8788_show_eoc_time, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) static DEVICE_ATTR(eoc_level, S_IRUSR, lp8788_show_eoc_level, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) static struct attribute *lp8788_charger_sysfs_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) &dev_attr_charger_status.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) &dev_attr_eoc_time.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) &dev_attr_eoc_level.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) ATTRIBUTE_GROUPS(lp8788_charger_sysfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) static int lp8788_psy_register(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) struct lp8788_charger *pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) struct power_supply_config charger_cfg = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) charger_cfg.attr_grp = lp8788_charger_sysfs_groups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) charger_cfg.supplied_to = battery_supplied_to;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) charger_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) pchg->charger = power_supply_register(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) &lp8788_psy_charger_desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) &charger_cfg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) if (IS_ERR(pchg->charger))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) pchg->battery = power_supply_register(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) &lp8788_psy_battery_desc, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) if (IS_ERR(pchg->battery)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) power_supply_unregister(pchg->charger);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) static int lp8788_charger_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) struct lp8788_charger *pchg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) pchg = devm_kzalloc(dev, sizeof(struct lp8788_charger), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) if (!pchg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) pchg->lp = lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) pchg->pdata = lp->pdata ? lp->pdata->chg_pdata : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) platform_set_drvdata(pdev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) ret = lp8788_update_charger_params(pdev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) lp8788_setup_adc_channel(&pdev->dev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) ret = lp8788_psy_register(pdev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) ret = lp8788_irq_register(pdev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) dev_warn(dev, "failed to register charger irq: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) static int lp8788_charger_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) struct lp8788_charger *pchg = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) flush_work(&pchg->charger_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) lp8788_irq_unregister(pdev, pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) lp8788_psy_unregister(pchg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) static struct platform_driver lp8788_charger_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) .probe = lp8788_charger_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) .remove = lp8788_charger_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) .name = LP8788_DEV_CHARGER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) module_platform_driver(lp8788_charger_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) MODULE_DESCRIPTION("TI LP8788 Charger Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) MODULE_AUTHOR("Milo Kim");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) MODULE_ALIAS("platform:lp8788-charger");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags