4 * Copyright (C) 2016 Rockchip Electronics Co., Ltd
5 * chenjh <chenjh@rock-chips.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 #include <linux/delay.h>
20 #include <linux/gpio.h>
21 #include <linux/iio/consumer.h>
22 #include <linux/iio/iio.h>
23 #include <linux/irq.h>
24 #include <linux/irqdomain.h>
25 #include <linux/jiffies.h>
26 #include <linux/mfd/rk808.h>
27 #include <linux/module.h>
28 #include <linux/of_device.h>
29 #include <linux/of_gpio.h>
30 #include <linux/platform_device.h>
31 #include <linux/power_supply.h>
32 #include <linux/power/rk_usbbc.h>
33 #include <linux/regmap.h>
34 #include <linux/rtc.h>
35 #include <linux/timer.h>
36 #include <linux/wakelock.h>
37 #include <linux/workqueue.h>
38 #include "rk818_battery.h"
40 static int dbg_enable = 0;
41 module_param_named(dbg_level, dbg_enable, int, 0644);
43 #define DBG(args...) \
50 #define BAT_INFO(fmt, args...) pr_info("rk818-bat: "fmt, ##args)
53 #define DEFAULT_BAT_RES 135
54 #define DEFAULT_SLP_ENTER_CUR 300
55 #define DEFAULT_SLP_EXIT_CUR 300
56 #define DEFAULT_SLP_FILTER_CUR 100
57 #define DEFAULT_PWROFF_VOL_THRESD 3400
58 #define DEFAULT_MONITOR_SEC 5
59 #define DEFAULT_ALGR_VOL_THRESD1 3850
60 #define DEFAULT_ALGR_VOL_THRESD2 3950
61 #define DEFAULT_MAX_SOC_OFFSET 60
62 #define DEFAULT_FB_TEMP TEMP_105C
63 #define DEFAULT_ZERO_RESERVE_DSOC 10
64 #define DEFAULT_POFFSET 42
65 #define DEFAULT_COFFSET 0x832
66 #define DEFAULT_SAMPLE_RES 20
67 #define DEFAULT_ENERGY_MODE 0
68 #define INVALID_COFFSET_MIN 0x780
69 #define INVALID_COFFSET_MAX 0x980
70 #define INVALID_VOL_THRESD 2500
72 /* sample resistor and division */
73 #define SAMPLE_RES_10MR 10
74 #define SAMPLE_RES_20MR 20
75 #define SAMPLE_RES_DIV1 1
76 #define SAMPLE_RES_DIV2 2
79 #define VIRTUAL_CURRENT 1000
80 #define VIRTUAL_VOLTAGE 3888
81 #define VIRTUAL_SOC 66
82 #define VIRTUAL_PRESET 1
83 #define VIRTUAL_TEMPERATURE 188
84 #define VIRTUAL_STATUS POWER_SUPPLY_STATUS_CHARGING
87 #define FINISH_CHRG_CUR1 1000
88 #define FINISH_CHRG_CUR2 1500
89 #define FINISH_MAX_SOC_DELAY 20
90 #define TERM_CHRG_DSOC 88
91 #define TERM_CHRG_CURR 600
92 #define TERM_CHRG_K 650
93 #define SIMULATE_CHRG_INTV 8
94 #define SIMULATE_CHRG_CURR 400
95 #define SIMULATE_CHRG_K 1500
96 #define FULL_CHRG_K 400
99 #define PWROFF_THRESD 3400
100 #define MIN_ZERO_DSOC_ACCURACY 10 /*0.01%*/
101 #define MIN_ZERO_OVERCNT 100
102 #define MIN_ACCURACY 1
103 #define DEF_PWRPATH_RES 50
104 #define WAIT_DSOC_DROP_SEC 15
105 #define WAIT_SHTD_DROP_SEC 30
106 #define ZERO_GAP_XSOC1 10
107 #define ZERO_GAP_XSOC2 5
108 #define ZERO_GAP_XSOC3 3
109 #define ZERO_LOAD_LVL1 1400
110 #define ZERO_LOAD_LVL2 600
111 #define ZERO_GAP_CALIB 5
113 #define ADC_CALIB_THRESHOLD 4
114 #define ADC_CALIB_LMT_MIN 3
115 #define ADC_CALIB_CNT 5
116 #define NTC_CALC_FACTOR 7
119 #define POWER_ON_SEC_BASE 1
120 #define MINUTE(x) ((x) * 60)
123 #define SLP_CURR_MAX 40
124 #define SLP_CURR_MIN 6
125 #define DISCHRG_TIME_STEP1 MINUTE(10)
126 #define DISCHRG_TIME_STEP2 MINUTE(60)
127 #define SLP_DSOC_VOL_THRESD 3600
128 #define REBOOT_PERIOD_SEC 180
129 #define REBOOT_MAX_CNT 80
134 static const char *bat_status[] = {
135 "charge off", "dead charge", "trickle charge", "cc cv",
136 "finish", "usb over vol", "bat temp error", "timer error",
139 struct rk818_battery {
140 struct platform_device *pdev;
142 struct regmap *regmap;
144 struct power_supply *bat;
145 struct battery_platform_data *pdata;
146 struct workqueue_struct *bat_monitor_wq;
147 struct delayed_work bat_delay_work;
148 struct delayed_work calib_delay_work;
149 struct wake_lock wake_lock;
150 struct notifier_block fb_nb;
151 struct timer_list caltimer;
152 struct timeval rtc_base;
156 bool is_first_power_on;
173 bool age_allow_update;
178 unsigned long age_keep_sec;
179 int zero_timeout_cnt;
192 int sleep_remain_cap;
193 unsigned long sleep_dischrg_sec;
194 unsigned long sleep_sum_sec;
195 bool sleep_chrg_online;
196 u8 sleep_chrg_status;
197 bool adc_allow_update;
199 bool s2r; /*suspend to resume*/
205 unsigned long finish_base;
206 unsigned long boot_base;
207 unsigned long flat_match_sec;
208 unsigned long plug_in_base;
209 unsigned long plug_out_base;
212 bool is_max_soc_offset;
228 int dbg_chrg_min[10];
234 #define DIV(x) ((x) ? (x) : 1)
236 static u64 get_boot_sec(void)
240 get_monotonic_boottime(&ts);
245 static unsigned long base2sec(unsigned long x)
248 return (get_boot_sec() > x) ? (get_boot_sec() - x) : 0;
253 static unsigned long base2min(unsigned long x)
255 return base2sec(x) / 60;
258 static u32 interpolate(int value, u32 *table, int size)
263 for (i = 0; i < size; i++) {
264 if (value < table[i])
268 if ((i > 0) && (i < size)) {
269 d = (value - table[i - 1]) * (MAX_INTERPOLATE / (size - 1));
270 d /= table[i] - table[i - 1];
271 d = d + (i - 1) * (MAX_INTERPOLATE / (size - 1));
273 d = i * ((MAX_INTERPOLATE + size / 2) / size);
283 static int32_t ab_div_c(u32 a, u32 b, u32 c)
289 sign = ((((a ^ b) ^ c) & 0x80000000) != 0);
293 tmp = (a * b + (c >> 1)) / c;
304 static int rk818_bat_read(struct rk818_battery *di, u8 reg)
308 ret = regmap_read(di->regmap, reg, &val);
310 dev_err(di->dev, "read reg:0x%x failed\n", reg);
315 static int rk818_bat_write(struct rk818_battery *di, u8 reg, u8 buf)
319 ret = regmap_write(di->regmap, reg, buf);
321 dev_err(di->dev, "i2c write reg: 0x%2x error\n", reg);
326 static int rk818_bat_set_bits(struct rk818_battery *di, u8 reg, u8 mask, u8 buf)
330 ret = regmap_update_bits(di->regmap, reg, mask, buf);
332 dev_err(di->dev, "write reg:0x%x failed\n", reg);
337 static int rk818_bat_clear_bits(struct rk818_battery *di, u8 reg, u8 mask)
341 ret = regmap_update_bits(di->regmap, reg, mask, 0);
343 dev_err(di->dev, "clr reg:0x%02x failed\n", reg);
348 static void rk818_bat_dump_regs(struct rk818_battery *di, u8 start, u8 end)
355 DBG("dump regs from: 0x%x-->0x%x\n", start, end);
356 for (i = start; i < end; i++)
357 DBG("0x%x: 0x%0x\n", i, rk818_bat_read(di, i));
360 static bool rk818_bat_chrg_online(struct rk818_battery *di)
364 buf = rk818_bat_read(di, RK818_VB_MON_REG);
366 return (buf & PLUG_IN_STS) ? true : false;
369 static int rk818_bat_get_coulomb_cap(struct rk818_battery *di)
373 val |= rk818_bat_read(di, RK818_GASCNT3_REG) << 24;
374 val |= rk818_bat_read(di, RK818_GASCNT2_REG) << 16;
375 val |= rk818_bat_read(di, RK818_GASCNT1_REG) << 8;
376 val |= rk818_bat_read(di, RK818_GASCNT0_REG) << 0;
378 return (val / 2390) * di->res_div;
381 static int rk818_bat_get_rsoc(struct rk818_battery *di)
385 remain_cap = rk818_bat_get_coulomb_cap(di);
386 return (remain_cap + di->fcc / 200) * 100 / DIV(di->fcc);
389 static ssize_t bat_info_store(struct device *dev, struct device_attribute *attr,
390 const char *buf, size_t count)
393 struct rk818_battery *di = dev_get_drvdata(dev);
395 sscanf(buf, "%c", &cmd);
398 rk818_bat_set_bits(di, RK818_MISC_MARK_REG,
399 FG_RESET_NOW, FG_RESET_NOW);
401 rk818_bat_set_bits(di, RK818_MISC_MARK_REG,
402 FG_RESET_LATE, FG_RESET_LATE);
404 rk818_bat_clear_bits(di, RK818_MISC_MARK_REG,
405 FG_RESET_LATE | FG_RESET_NOW);
407 BAT_INFO("0x%2x\n", rk818_bat_read(di, RK818_MISC_MARK_REG));
409 BAT_INFO("command error\n");
414 static struct device_attribute rk818_bat_attr[] = {
415 __ATTR(bat, 0664, NULL, bat_info_store),
418 static void rk818_bat_enable_gauge(struct rk818_battery *di)
422 buf = rk818_bat_read(di, RK818_TS_CTRL_REG);
424 rk818_bat_write(di, RK818_TS_CTRL_REG, buf);
427 static void rk818_bat_save_age_level(struct rk818_battery *di, u8 level)
429 rk818_bat_write(di, RK818_UPDAT_LEVE_REG, level);
432 static u8 rk818_bat_get_age_level(struct rk818_battery *di)
434 return rk818_bat_read(di, RK818_UPDAT_LEVE_REG);
437 static int rk818_bat_get_vcalib0(struct rk818_battery *di)
441 val |= rk818_bat_read(di, RK818_VCALIB0_REGL) << 0;
442 val |= rk818_bat_read(di, RK818_VCALIB0_REGH) << 8;
444 DBG("<%s>. voffset0: 0x%x\n", __func__, val);
448 static int rk818_bat_get_vcalib1(struct rk818_battery *di)
452 val |= rk818_bat_read(di, RK818_VCALIB1_REGL) << 0;
453 val |= rk818_bat_read(di, RK818_VCALIB1_REGH) << 8;
455 DBG("<%s>. voffset1: 0x%x\n", __func__, val);
459 static int rk818_bat_get_ioffset(struct rk818_battery *di)
463 val |= rk818_bat_read(di, RK818_IOFFSET_REGL) << 0;
464 val |= rk818_bat_read(di, RK818_IOFFSET_REGH) << 8;
466 DBG("<%s>. ioffset: 0x%x\n", __func__, val);
470 static int rk818_bat_get_coffset(struct rk818_battery *di)
474 val |= rk818_bat_read(di, RK818_CAL_OFFSET_REGL) << 0;
475 val |= rk818_bat_read(di, RK818_CAL_OFFSET_REGH) << 8;
477 DBG("<%s>. coffset: 0x%x\n", __func__, val);
481 static void rk818_bat_set_coffset(struct rk818_battery *di, int val)
485 if ((val < INVALID_COFFSET_MIN) || (val > INVALID_COFFSET_MAX)) {
486 BAT_INFO("set invalid coffset=0x%x\n", val);
490 buf = (val >> 8) & 0xff;
491 rk818_bat_write(di, RK818_CAL_OFFSET_REGH, buf);
492 buf = (val >> 0) & 0xff;
493 rk818_bat_write(di, RK818_CAL_OFFSET_REGL, buf);
494 DBG("<%s>. coffset: 0x%x\n", __func__, val);
497 static void rk818_bat_init_voltage_kb(struct rk818_battery *di)
499 int vcalib0, vcalib1;
501 vcalib0 = rk818_bat_get_vcalib0(di);
502 vcalib1 = rk818_bat_get_vcalib1(di);
503 di->voltage_k = (4200 - 3000) * 1000 / DIV(vcalib1 - vcalib0);
504 di->voltage_b = 4200 - (di->voltage_k * vcalib1) / 1000;
506 DBG("voltage_k=%d(*1000),voltage_b=%d\n", di->voltage_k, di->voltage_b);
509 static int rk818_bat_get_ocv_voltage(struct rk818_battery *di)
513 val |= rk818_bat_read(di, RK818_BAT_OCV_REGL) << 0;
514 val |= rk818_bat_read(di, RK818_BAT_OCV_REGH) << 8;
516 vol = di->voltage_k * val / 1000 + di->voltage_b;
521 static int rk818_bat_get_avg_voltage(struct rk818_battery *di)
525 val |= rk818_bat_read(di, RK818_BAT_VOL_REGL) << 0;
526 val |= rk818_bat_read(di, RK818_BAT_VOL_REGH) << 8;
528 vol = di->voltage_k * val / 1000 + di->voltage_b;
533 static bool is_rk818_bat_relax_mode(struct rk818_battery *di)
537 status = rk818_bat_read(di, RK818_GGSTS_REG);
538 if (!(status & RELAX_VOL1_UPD) || !(status & RELAX_VOL2_UPD))
544 static u16 rk818_bat_get_relax_vol1(struct rk818_battery *di)
548 val |= rk818_bat_read(di, RK818_RELAX_VOL1_REGL) << 0;
549 val |= rk818_bat_read(di, RK818_RELAX_VOL1_REGH) << 8;
550 vol = di->voltage_k * val / 1000 + di->voltage_b;
555 static u16 rk818_bat_get_relax_vol2(struct rk818_battery *di)
559 val |= rk818_bat_read(di, RK818_RELAX_VOL2_REGL) << 0;
560 val |= rk818_bat_read(di, RK818_RELAX_VOL2_REGH) << 8;
561 vol = di->voltage_k * val / 1000 + di->voltage_b;
566 static u16 rk818_bat_get_relax_voltage(struct rk818_battery *di)
568 u16 relax_vol1, relax_vol2;
570 if (!is_rk818_bat_relax_mode(di))
573 relax_vol1 = rk818_bat_get_relax_vol1(di);
574 relax_vol2 = rk818_bat_get_relax_vol2(di);
576 return relax_vol1 > relax_vol2 ? relax_vol1 : relax_vol2;
579 static int rk818_bat_get_avg_current(struct rk818_battery *di)
583 val |= rk818_bat_read(di, RK818_BAT_CUR_AVG_REGL) << 0;
584 val |= rk818_bat_read(di, RK818_BAT_CUR_AVG_REGH) << 8;
588 cur = val * di->res_div * 1506 / 1000;
593 static int rk818_bat_vol_to_ocvsoc(struct rk818_battery *di, int voltage)
595 u32 *ocv_table, temp;
596 int ocv_size, ocv_soc;
598 ocv_table = di->pdata->ocv_table;
599 ocv_size = di->pdata->ocv_size;
600 temp = interpolate(voltage, ocv_table, ocv_size);
601 ocv_soc = ab_div_c(temp, MAX_PERCENTAGE, MAX_INTERPOLATE);
606 static int rk818_bat_vol_to_ocvcap(struct rk818_battery *di, int voltage)
608 u32 *ocv_table, temp;
611 ocv_table = di->pdata->ocv_table;
612 ocv_size = di->pdata->ocv_size;
613 temp = interpolate(voltage, ocv_table, ocv_size);
614 cap = ab_div_c(temp, di->fcc, MAX_INTERPOLATE);
619 static int rk818_bat_vol_to_zerosoc(struct rk818_battery *di, int voltage)
621 u32 *ocv_table, temp;
622 int ocv_size, ocv_soc;
624 ocv_table = di->pdata->zero_table;
625 ocv_size = di->pdata->ocv_size;
626 temp = interpolate(voltage, ocv_table, ocv_size);
627 ocv_soc = ab_div_c(temp, MAX_PERCENTAGE, MAX_INTERPOLATE);
632 static int rk818_bat_vol_to_zerocap(struct rk818_battery *di, int voltage)
634 u32 *ocv_table, temp;
637 ocv_table = di->pdata->zero_table;
638 ocv_size = di->pdata->ocv_size;
639 temp = interpolate(voltage, ocv_table, ocv_size);
640 cap = ab_div_c(temp, di->fcc, MAX_INTERPOLATE);
645 static int rk818_bat_get_iadc(struct rk818_battery *di)
649 val |= rk818_bat_read(di, RK818_BAT_CUR_AVG_REGL) << 0;
650 val |= rk818_bat_read(di, RK818_BAT_CUR_AVG_REGH) << 8;
657 static bool rk818_bat_adc_calib(struct rk818_battery *di)
659 int i, ioffset, coffset, adc, save_coffset;
661 if ((di->chrg_status != CHARGE_FINISH) ||
662 (di->adc_calib_cnt > ADC_CALIB_CNT) ||
663 (base2min(di->boot_base) < ADC_CALIB_LMT_MIN) ||
664 (abs(di->current_avg) < ADC_CALIB_THRESHOLD))
668 save_coffset = rk818_bat_get_coffset(di);
669 for (i = 0; i < 5; i++) {
670 adc = rk818_bat_get_iadc(di);
671 if (!rk818_bat_chrg_online(di)) {
672 rk818_bat_set_coffset(di, save_coffset);
673 BAT_INFO("quit, charger plugout when calib adc\n");
676 coffset = rk818_bat_get_coffset(di);
677 rk818_bat_set_coffset(di, coffset + adc);
679 adc = rk818_bat_get_iadc(di);
680 if (abs(adc) < ADC_CALIB_THRESHOLD) {
681 coffset = rk818_bat_get_coffset(di);
682 ioffset = rk818_bat_get_ioffset(di);
683 di->poffset = coffset - ioffset;
684 rk818_bat_write(di, RK818_POFFSET_REG, di->poffset);
685 BAT_INFO("new offset:c=0x%x, i=0x%x, p=0x%x\n",
686 coffset, ioffset, di->poffset);
689 BAT_INFO("coffset calib again %d.., max_cnt=%d\n",
690 i, di->adc_calib_cnt);
691 rk818_bat_set_coffset(di, coffset);
696 rk818_bat_set_coffset(di, save_coffset);
701 static void rk818_bat_set_ioffset_sample(struct rk818_battery *di)
705 ggcon = rk818_bat_read(di, RK818_GGCON_REG);
706 ggcon &= ~ADC_CAL_MIN_MSK;
707 ggcon |= ADC_CAL_8MIN;
708 rk818_bat_write(di, RK818_GGCON_REG, ggcon);
711 static void rk818_bat_set_ocv_sample(struct rk818_battery *di)
715 ggcon = rk818_bat_read(di, RK818_GGCON_REG);
716 ggcon &= ~OCV_SAMP_MIN_MSK;
717 ggcon |= OCV_SAMP_8MIN;
718 rk818_bat_write(di, RK818_GGCON_REG, ggcon);
721 static void rk818_bat_restart_relax(struct rk818_battery *di)
725 ggsts = rk818_bat_read(di, RK818_GGSTS_REG);
726 ggsts &= ~RELAX_VOL12_UPD_MSK;
727 rk818_bat_write(di, RK818_GGSTS_REG, ggsts);
730 static void rk818_bat_set_relax_sample(struct rk818_battery *di)
733 int enter_thres, exit_thres;
734 struct battery_platform_data *pdata = di->pdata;
736 enter_thres = pdata->sleep_enter_current * 1000 / 1506 / DIV(di->res_div);
737 exit_thres = pdata->sleep_exit_current * 1000 / 1506 / DIV(di->res_div);
739 /* set relax enter and exit threshold */
740 buf = enter_thres & 0xff;
741 rk818_bat_write(di, RK818_RELAX_ENTRY_THRES_REGL, buf);
742 buf = (enter_thres >> 8) & 0xff;
743 rk818_bat_write(di, RK818_RELAX_ENTRY_THRES_REGH, buf);
745 buf = exit_thres & 0xff;
746 rk818_bat_write(di, RK818_RELAX_EXIT_THRES_REGL, buf);
747 buf = (exit_thres >> 8) & 0xff;
748 rk818_bat_write(di, RK818_RELAX_EXIT_THRES_REGH, buf);
750 /* reset relax update state */
751 rk818_bat_restart_relax(di);
752 DBG("<%s>. sleep_enter_current = %d, sleep_exit_current = %d\n",
753 __func__, pdata->sleep_enter_current, pdata->sleep_exit_current);
756 static bool is_rk818_bat_exist(struct rk818_battery *di)
758 return (rk818_bat_read(di, RK818_SUP_STS_REG) & BAT_EXS) ? true : false;
761 static bool is_rk818_bat_first_pwron(struct rk818_battery *di)
765 buf = rk818_bat_read(di, RK818_GGSTS_REG);
768 rk818_bat_write(di, RK818_GGSTS_REG, buf);
775 static u8 rk818_bat_get_pwroff_min(struct rk818_battery *di)
779 cur = rk818_bat_read(di, RK818_NON_ACT_TIMER_CNT_REG);
780 last = rk818_bat_read(di, RK818_NON_ACT_TIMER_CNT_SAVE_REG);
781 rk818_bat_write(di, RK818_NON_ACT_TIMER_CNT_SAVE_REG, cur);
783 return (cur != last) ? cur : 0;
786 static u8 is_rk818_bat_initialized(struct rk818_battery *di)
788 u8 val = rk818_bat_read(di, RK818_MISC_MARK_REG);
792 rk818_bat_write(di, RK818_MISC_MARK_REG, val);
799 static bool is_rk818_bat_ocv_valid(struct rk818_battery *di)
801 return (!di->is_initialized && di->pwroff_min >= 30) ? true : false;
804 static void rk818_bat_init_age_algorithm(struct rk818_battery *di)
806 int age_level, ocv_soc, ocv_cap, ocv_vol;
808 if (di->is_first_power_on || is_rk818_bat_ocv_valid(di)) {
809 DBG("<%s> enter.\n", __func__);
810 ocv_vol = rk818_bat_get_ocv_voltage(di);
811 ocv_soc = rk818_bat_vol_to_ocvsoc(di, ocv_vol);
812 ocv_cap = rk818_bat_vol_to_ocvcap(di, ocv_vol);
814 di->age_voltage = ocv_vol;
815 di->age_ocv_cap = ocv_cap;
816 di->age_ocv_soc = ocv_soc;
817 di->age_adjust_cap = 0;
821 else if (ocv_soc < 5)
823 else if (ocv_soc < 10)
828 age_level = rk818_bat_get_age_level(di);
829 if (age_level > di->age_level) {
830 di->age_allow_update = false;
834 rk818_bat_save_age_level(di, age_level);
836 di->age_allow_update = true;
837 di->age_keep_sec = get_boot_sec();
840 BAT_INFO("init_age_algorithm: "
841 "age_vol:%d, age_ocv_cap:%d, "
842 "age_ocv_soc:%d, old_age_level:%d, "
843 "age_allow_update:%d, new_age_level:%d\n",
844 di->age_voltage, di->age_ocv_cap,
845 ocv_soc, age_level, di->age_allow_update,
851 static enum power_supply_property rk818_bat_props[] = {
852 POWER_SUPPLY_PROP_CURRENT_NOW,
853 POWER_SUPPLY_PROP_VOLTAGE_NOW,
854 POWER_SUPPLY_PROP_PRESENT,
855 POWER_SUPPLY_PROP_HEALTH,
856 POWER_SUPPLY_PROP_CAPACITY,
857 POWER_SUPPLY_PROP_TEMP,
858 POWER_SUPPLY_PROP_STATUS,
861 static int rk818_battery_get_property(struct power_supply *psy,
862 enum power_supply_property psp,
863 union power_supply_propval *val)
865 struct rk818_battery *di = power_supply_get_drvdata(psy);
868 case POWER_SUPPLY_PROP_CURRENT_NOW:
869 val->intval = di->current_avg * 1000;/*uA*/
870 if (di->pdata->bat_mode == MODE_VIRTUAL)
871 val->intval = VIRTUAL_CURRENT * 1000;
873 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
874 val->intval = di->voltage_avg * 1000;/*uV*/
875 if (di->pdata->bat_mode == MODE_VIRTUAL)
876 val->intval = VIRTUAL_VOLTAGE * 1000;
878 case POWER_SUPPLY_PROP_PRESENT:
879 val->intval = is_rk818_bat_exist(di);
880 if (di->pdata->bat_mode == MODE_VIRTUAL)
881 val->intval = VIRTUAL_PRESET;
883 case POWER_SUPPLY_PROP_CAPACITY:
884 val->intval = di->dsoc;
885 if (di->pdata->bat_mode == MODE_VIRTUAL)
886 val->intval = VIRTUAL_SOC;
887 DBG("<%s>. report dsoc: %d\n", __func__, val->intval);
889 case POWER_SUPPLY_PROP_HEALTH:
890 val->intval = POWER_SUPPLY_HEALTH_GOOD;
892 case POWER_SUPPLY_PROP_TEMP:
893 val->intval = di->temperature;
894 if (di->pdata->bat_mode == MODE_VIRTUAL)
895 val->intval = VIRTUAL_TEMPERATURE;
897 case POWER_SUPPLY_PROP_STATUS:
898 if (di->pdata->bat_mode == MODE_VIRTUAL)
899 val->intval = VIRTUAL_STATUS;
900 else if (di->dsoc == 100)
901 val->intval = POWER_SUPPLY_STATUS_FULL;
902 else if (rk818_bat_chrg_online(di))
903 val->intval = POWER_SUPPLY_STATUS_CHARGING;
905 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
914 static const struct power_supply_desc rk818_bat_desc = {
916 .type = POWER_SUPPLY_TYPE_BATTERY,
917 .properties = rk818_bat_props,
918 .num_properties = ARRAY_SIZE(rk818_bat_props),
919 .get_property = rk818_battery_get_property,
922 static int rk818_bat_init_power_supply(struct rk818_battery *di)
924 struct power_supply_config psy_cfg = { .drv_data = di, };
926 di->bat = devm_power_supply_register(di->dev, &rk818_bat_desc, &psy_cfg);
927 if (IS_ERR(di->bat)) {
928 dev_err(di->dev, "register bat power supply fail\n");
929 return PTR_ERR(di->bat);
935 static void rk818_bat_save_cap(struct rk818_battery *di, int cap)
948 buf = (cap >> 24) & 0xff;
949 rk818_bat_write(di, RK818_REMAIN_CAP_REG3, buf);
950 buf = (cap >> 16) & 0xff;
951 rk818_bat_write(di, RK818_REMAIN_CAP_REG2, buf);
952 buf = (cap >> 8) & 0xff;
953 rk818_bat_write(di, RK818_REMAIN_CAP_REG1, buf);
954 buf = (cap >> 0) & 0xff;
955 rk818_bat_write(di, RK818_REMAIN_CAP_REG0, buf);
958 static int rk818_bat_get_prev_cap(struct rk818_battery *di)
962 val |= rk818_bat_read(di, RK818_REMAIN_CAP_REG3) << 24;
963 val |= rk818_bat_read(di, RK818_REMAIN_CAP_REG2) << 16;
964 val |= rk818_bat_read(di, RK818_REMAIN_CAP_REG1) << 8;
965 val |= rk818_bat_read(di, RK818_REMAIN_CAP_REG0) << 0;
970 static void rk818_bat_save_fcc(struct rk818_battery *di, u32 fcc)
974 buf = (fcc >> 24) & 0xff;
975 rk818_bat_write(di, RK818_NEW_FCC_REG3, buf);
976 buf = (fcc >> 16) & 0xff;
977 rk818_bat_write(di, RK818_NEW_FCC_REG2, buf);
978 buf = (fcc >> 8) & 0xff;
979 rk818_bat_write(di, RK818_NEW_FCC_REG1, buf);
980 buf = (fcc >> 0) & 0xff;
981 rk818_bat_write(di, RK818_NEW_FCC_REG0, buf);
983 BAT_INFO("save fcc: %d\n", fcc);
986 static int rk818_bat_get_fcc(struct rk818_battery *di)
990 fcc |= rk818_bat_read(di, RK818_NEW_FCC_REG3) << 24;
991 fcc |= rk818_bat_read(di, RK818_NEW_FCC_REG2) << 16;
992 fcc |= rk818_bat_read(di, RK818_NEW_FCC_REG1) << 8;
993 fcc |= rk818_bat_read(di, RK818_NEW_FCC_REG0) << 0;
996 BAT_INFO("invalid fcc(%d), use design cap", fcc);
997 fcc = di->pdata->design_capacity;
998 rk818_bat_save_fcc(di, fcc);
999 } else if (fcc > di->pdata->design_qmax) {
1000 BAT_INFO("invalid fcc(%d), use qmax", fcc);
1001 fcc = di->pdata->design_qmax;
1002 rk818_bat_save_fcc(di, fcc);
1008 static void rk818_bat_init_coulomb_cap(struct rk818_battery *di, u32 capacity)
1013 cap = capacity * 2390 / DIV(di->res_div);
1014 buf = (cap >> 24) & 0xff;
1015 rk818_bat_write(di, RK818_GASCNT_CAL_REG3, buf);
1016 buf = (cap >> 16) & 0xff;
1017 rk818_bat_write(di, RK818_GASCNT_CAL_REG2, buf);
1018 buf = (cap >> 8) & 0xff;
1019 rk818_bat_write(di, RK818_GASCNT_CAL_REG1, buf);
1020 buf = ((cap >> 0) & 0xff);
1021 rk818_bat_write(di, RK818_GASCNT_CAL_REG0, buf);
1023 DBG("<%s>. new coulomb cap = %d\n", __func__, capacity);
1024 di->remain_cap = capacity;
1025 di->rsoc = rk818_bat_get_rsoc(di);
1028 static void rk818_bat_save_dsoc(struct rk818_battery *di, u8 save_soc)
1030 static int last_soc = -1;
1032 if (last_soc != save_soc) {
1033 rk818_bat_write(di, RK818_SOC_REG, save_soc);
1034 last_soc = save_soc;
1038 static int rk818_bat_get_prev_dsoc(struct rk818_battery *di)
1040 return rk818_bat_read(di, RK818_SOC_REG);
1043 static void rk818_bat_save_reboot_cnt(struct rk818_battery *di, u8 save_cnt)
1045 rk818_bat_write(di, RK818_REBOOT_CNT_REG, save_cnt);
1048 static int rk818_bat_fb_notifier(struct notifier_block *nb,
1049 unsigned long event, void *data)
1051 struct rk818_battery *di;
1052 struct fb_event *evdata = data;
1054 di = container_of(nb, struct rk818_battery, fb_nb);
1055 di->fb_blank = *(int *)evdata->data;
1060 static int rk818_bat_register_fb_notify(struct rk818_battery *di)
1062 memset(&di->fb_nb, 0, sizeof(di->fb_nb));
1063 di->fb_nb.notifier_call = rk818_bat_fb_notifier;
1065 return fb_register_client(&di->fb_nb);
1068 static int rk818_bat_unregister_fb_notify(struct rk818_battery *di)
1070 return fb_unregister_client(&di->fb_nb);
1073 static u8 rk818_bat_get_halt_cnt(struct rk818_battery *di)
1075 return rk818_bat_read(di, RK818_HALT_CNT_REG);
1078 static void rk818_bat_inc_halt_cnt(struct rk818_battery *di)
1082 cnt = rk818_bat_read(di, RK818_HALT_CNT_REG);
1083 rk818_bat_write(di, RK818_HALT_CNT_REG, ++cnt);
1086 static bool is_rk818_bat_last_halt(struct rk818_battery *di)
1088 int pre_cap = rk818_bat_get_prev_cap(di);
1089 int now_cap = rk818_bat_get_coulomb_cap(di);
1091 /* over 10%: system halt last time */
1092 if (abs(now_cap - pre_cap) > (di->fcc / 10)) {
1093 rk818_bat_inc_halt_cnt(di);
1100 static void rk818_bat_first_pwron(struct rk818_battery *di)
1104 rk818_bat_save_fcc(di, di->design_cap);
1105 ocv_vol = rk818_bat_get_ocv_voltage(di);
1106 di->fcc = rk818_bat_get_fcc(di);
1107 di->nac = rk818_bat_vol_to_ocvcap(di, ocv_vol);
1108 di->rsoc = rk818_bat_vol_to_ocvsoc(di, ocv_vol);
1109 di->dsoc = di->rsoc;
1110 di->is_first_on = true;
1112 BAT_INFO("first on: dsoc=%d, rsoc=%d cap=%d, fcc=%d, ov=%d\n",
1113 di->dsoc, di->rsoc, di->nac, di->fcc, ocv_vol);
1116 static void rk818_bat_not_first_pwron(struct rk818_battery *di)
1118 int now_cap, pre_soc, pre_cap, ocv_cap, ocv_soc, ocv_vol;
1120 di->fcc = rk818_bat_get_fcc(di);
1121 pre_soc = rk818_bat_get_prev_dsoc(di);
1122 pre_cap = rk818_bat_get_prev_cap(di);
1123 now_cap = rk818_bat_get_coulomb_cap(di);
1124 di->is_halt = is_rk818_bat_last_halt(di);
1125 di->halt_cnt = rk818_bat_get_halt_cnt(di);
1126 di->is_initialized = is_rk818_bat_initialized(di);
1127 di->is_ocv_calib = is_rk818_bat_ocv_valid(di);
1130 BAT_INFO("system halt last time... cap: pre=%d, now=%d\n",
1134 rk818_bat_init_coulomb_cap(di, now_cap);
1138 } else if (di->is_initialized) {
1139 BAT_INFO("initialized yet..\n");
1141 } else if (di->is_ocv_calib) {
1142 ocv_vol = rk818_bat_get_ocv_voltage(di);
1143 ocv_soc = rk818_bat_vol_to_ocvsoc(di, ocv_vol);
1144 ocv_cap = rk818_bat_vol_to_ocvcap(di, ocv_vol);
1146 di->ocv_pre_dsoc = pre_soc;
1147 di->ocv_new_dsoc = ocv_soc;
1148 if (abs(ocv_soc - pre_soc) >= di->pdata->max_soc_offset) {
1149 di->ocv_pre_dsoc = pre_soc;
1150 di->ocv_new_dsoc = ocv_soc;
1151 di->is_max_soc_offset = true;
1152 BAT_INFO("trigger max soc offset, dsoc: %d -> %d\n",
1156 BAT_INFO("OCV calib: cap=%d, rsoc=%d\n", ocv_cap, ocv_soc);
1157 } else if (di->pwroff_min > 0) {
1158 ocv_vol = rk818_bat_get_ocv_voltage(di);
1159 ocv_soc = rk818_bat_vol_to_ocvsoc(di, ocv_vol);
1160 ocv_cap = rk818_bat_vol_to_ocvcap(di, ocv_vol);
1161 di->force_pre_dsoc = pre_soc;
1162 di->force_new_dsoc = ocv_soc;
1163 if (abs(ocv_soc - pre_soc) >= 80) {
1164 di->is_force_calib = true;
1165 BAT_INFO("dsoc force calib: %d -> %d\n",
1178 BAT_INFO("dsoc=%d cap=%d v=%d ov=%d rv=%d min=%d psoc=%d pcap=%d\n",
1179 di->dsoc, di->nac, rk818_bat_get_avg_voltage(di),
1180 rk818_bat_get_ocv_voltage(di), rk818_bat_get_relax_voltage(di),
1181 di->pwroff_min, rk818_bat_get_prev_dsoc(di),
1182 rk818_bat_get_prev_cap(di));
1185 static bool rk818_bat_ocv_sw_reset(struct rk818_battery *di)
1189 buf = rk818_bat_read(di, RK818_MISC_MARK_REG);
1190 if (((buf & FG_RESET_LATE) && di->pwroff_min >= 30) ||
1191 (buf & FG_RESET_NOW)) {
1192 buf &= ~FG_RESET_LATE;
1193 buf &= ~FG_RESET_NOW;
1194 rk818_bat_write(di, RK818_MISC_MARK_REG, buf);
1195 BAT_INFO("manual reset fuel gauge\n");
1202 static void rk818_bat_init_rsoc(struct rk818_battery *di)
1204 di->is_first_power_on = is_rk818_bat_first_pwron(di);
1205 di->is_sw_reset = rk818_bat_ocv_sw_reset(di);
1206 di->pwroff_min = rk818_bat_get_pwroff_min(di);
1208 if (di->is_first_power_on || di->is_sw_reset)
1209 rk818_bat_first_pwron(di);
1211 rk818_bat_not_first_pwron(di);
1214 static u8 rk818_bat_get_chrg_status(struct rk818_battery *di)
1218 status = rk818_bat_read(di, RK818_SUP_STS_REG) & CHRG_STATUS_MSK;
1221 DBG("CHARGE-OFF ...\n");
1224 BAT_INFO("DEAD CHARGE...\n");
1226 case TRICKLE_CHARGE:
1227 BAT_INFO("TRICKLE CHARGE...\n ");
1230 DBG("CC or CV...\n");
1233 DBG("CHARGE FINISH...\n");
1236 BAT_INFO("USB OVER VOL...\n");
1239 BAT_INFO("BAT TMP ERROR...\n");
1242 BAT_INFO("TIMER ERROR...\n");
1245 BAT_INFO("USB EXIST...\n");
1248 BAT_INFO("USB EFF...\n");
1257 static u8 rk818_bat_parse_fb_temperature(struct rk818_battery *di)
1262 reg = DEFAULT_FB_TEMP;
1263 fb_temp = di->pdata->fb_temp;
1264 for (index = 0; index < ARRAY_SIZE(feedback_temp_array); index++) {
1265 if (fb_temp < feedback_temp_array[index])
1267 reg = (index << FB_TEMP_SHIFT);
1273 static u8 rk818_bat_parse_finish_ma(struct rk818_battery *di, int fcc)
1277 if (di->pdata->sample_res == SAMPLE_RES_10MR)
1279 else if (fcc > 5000)
1281 else if (fcc >= 4000)
1283 else if (fcc >= 3000)
1291 static void rk818_bat_init_chrg_config(struct rk818_battery *di)
1293 u8 usb_ctrl, chrg_ctrl2, chrg_ctrl3;
1294 u8 thermal, ggcon, finish_ma, fb_temp;
1296 finish_ma = rk818_bat_parse_finish_ma(di, di->fcc);
1297 fb_temp = rk818_bat_parse_fb_temperature(di);
1299 ggcon = rk818_bat_read(di, RK818_GGCON_REG);
1300 thermal = rk818_bat_read(di, RK818_THERMAL_REG);
1301 usb_ctrl = rk818_bat_read(di, RK818_USB_CTRL_REG);
1302 chrg_ctrl2 = rk818_bat_read(di, RK818_CHRG_CTRL_REG2);
1303 chrg_ctrl3 = rk818_bat_read(di, RK818_CHRG_CTRL_REG3);
1305 /* set charge finish current */
1306 chrg_ctrl3 |= CHRG_TERM_DIG_SIGNAL;
1307 chrg_ctrl2 &= ~FINISH_CUR_MSK;
1308 chrg_ctrl2 |= finish_ma;
1310 /* disable cccv mode */
1311 chrg_ctrl3 &= ~CHRG_TIMER_CCCV_EN;
1313 /* set feed back temperature */
1314 if (di->pdata->fb_temp)
1315 usb_ctrl |= CHRG_CT_EN;
1317 usb_ctrl &= ~CHRG_CT_EN;
1318 thermal &= ~FB_TEMP_MSK;
1321 /* adc current mode */
1322 ggcon |= ADC_CUR_MODE;
1324 rk818_bat_write(di, RK818_GGCON_REG, ggcon);
1325 rk818_bat_write(di, RK818_THERMAL_REG, thermal);
1326 rk818_bat_write(di, RK818_USB_CTRL_REG, usb_ctrl);
1327 rk818_bat_write(di, RK818_CHRG_CTRL_REG2, chrg_ctrl2);
1328 rk818_bat_write(di, RK818_CHRG_CTRL_REG3, chrg_ctrl3);
1331 static void rk818_bat_init_coffset(struct rk818_battery *di)
1333 int coffset, ioffset;
1335 ioffset = rk818_bat_get_ioffset(di);
1336 di->poffset = rk818_bat_read(di, RK818_POFFSET_REG);
1338 di->poffset = DEFAULT_POFFSET;
1340 coffset = di->poffset + ioffset;
1341 if (coffset < INVALID_COFFSET_MIN || coffset > INVALID_COFFSET_MAX)
1342 coffset = DEFAULT_COFFSET;
1344 rk818_bat_set_coffset(di, coffset);
1346 DBG("<%s>. offset: p=0x%x, i=0x%x, c=0x%x\n",
1347 __func__, di->poffset, ioffset, rk818_bat_get_coffset(di));
1350 static void rk818_bat_caltimer_isr(unsigned long data)
1352 struct rk818_battery *di = (struct rk818_battery *)data;
1354 mod_timer(&di->caltimer, jiffies + MINUTE(8) * HZ);
1355 queue_delayed_work(di->bat_monitor_wq, &di->calib_delay_work,
1356 msecs_to_jiffies(10));
1359 static void rk818_bat_internal_calib(struct work_struct *work)
1361 int ioffset, poffset;
1362 struct rk818_battery *di = container_of(work,
1363 struct rk818_battery, calib_delay_work.work);
1366 poffset = rk818_bat_read(di, RK818_POFFSET_REG);
1368 di->poffset = poffset;
1370 di->poffset = DEFAULT_POFFSET;
1372 ioffset = rk818_bat_get_ioffset(di);
1373 rk818_bat_set_coffset(di, ioffset + di->poffset);
1375 /* calib voltage kb */
1376 rk818_bat_init_voltage_kb(di);
1377 BAT_INFO("caltimer: ioffset=0x%x, coffset=0x%x, poffset=%d\n",
1378 ioffset, rk818_bat_get_coffset(di), di->poffset);
1381 static void rk818_bat_init_caltimer(struct rk818_battery *di)
1383 setup_timer(&di->caltimer, rk818_bat_caltimer_isr, (unsigned long)di);
1384 di->caltimer.expires = jiffies + MINUTE(8) * HZ;
1385 add_timer(&di->caltimer);
1386 INIT_DELAYED_WORK(&di->calib_delay_work, rk818_bat_internal_calib);
1389 static void rk818_bat_init_zero_table(struct rk818_battery *di)
1391 int i, diff, min, max;
1392 size_t ocv_size, length;
1394 ocv_size = di->pdata->ocv_size;
1395 length = sizeof(di->pdata->zero_table) * ocv_size;
1396 di->pdata->zero_table =
1397 devm_kzalloc(di->dev, length, GFP_KERNEL);
1398 if (!di->pdata->zero_table) {
1399 di->pdata->zero_table = di->pdata->ocv_table;
1400 dev_err(di->dev, "malloc zero table fail\n");
1404 min = di->pdata->pwroff_vol,
1405 max = di->pdata->ocv_table[ocv_size - 4];
1406 diff = (max - min) / DIV(ocv_size - 1);
1407 for (i = 0; i < ocv_size; i++)
1408 di->pdata->zero_table[i] = min + (i * diff);
1410 for (i = 0; i < ocv_size; i++)
1411 DBG("zero[%d] = %d\n", i, di->pdata->zero_table[i]);
1413 for (i = 0; i < ocv_size; i++)
1414 DBG("ocv[%d] = %d\n", i, di->pdata->ocv_table[i]);
1417 static void rk818_bat_calc_sm_linek(struct rk818_battery *di)
1419 int linek, current_avg;
1422 delta = abs(di->dsoc - di->rsoc);
1423 diff = delta * 3;/* speed:3/4 */
1424 current_avg = rk818_bat_get_avg_current(di);
1425 if (current_avg >= 0) {
1426 if (di->dsoc < di->rsoc)
1427 linek = 1000 * (delta + diff) / DIV(diff);
1428 else if (di->dsoc > di->rsoc)
1429 linek = 1000 * diff / DIV(delta + diff);
1432 di->dbg_meet_soc = (di->dsoc >= di->rsoc) ?
1433 (di->dsoc + diff) : (di->rsoc + diff);
1435 if (di->dsoc < di->rsoc)
1436 linek = -1000 * diff / DIV(delta + diff);
1437 else if (di->dsoc > di->rsoc)
1438 linek = -1000 * (delta + diff) / DIV(diff);
1441 di->dbg_meet_soc = (di->dsoc >= di->rsoc) ?
1442 (di->dsoc - diff) : (di->rsoc - diff);
1445 di->sm_linek = linek;
1446 di->sm_remain_cap = di->remain_cap;
1447 di->dbg_calc_dsoc = di->dsoc;
1448 di->dbg_calc_rsoc = di->rsoc;
1450 DBG("<%s>.diff=%d, k=%d, cur=%d\n", __func__, diff, linek, current_avg);
1453 static void rk818_bat_calc_zero_linek(struct rk818_battery *di)
1455 int dead_voltage, ocv_voltage;
1456 int voltage_avg, current_avg, vsys;
1457 int ocv_cap, dead_cap, xsoc;
1458 int ocv_soc, dead_soc;
1460 int i, cnt, vol_old, vol_now;
1461 int org_linek = 0, min_gap_xsoc;
1463 if ((abs(di->current_avg) < 500) && (di->dsoc > 10))
1464 pwroff_vol = di->pdata->pwroff_vol + 50;
1466 pwroff_vol = di->pdata->pwroff_vol;
1469 vol_old = rk818_bat_get_avg_voltage(di);
1471 vol_now = rk818_bat_get_avg_voltage(di);
1473 } while ((vol_old == vol_now) && (cnt < 11));
1476 for (i = 0; i < 10; i++) {
1477 voltage_avg += rk818_bat_get_avg_voltage(di);
1481 /* calc estimate ocv voltage */
1483 current_avg = rk818_bat_get_avg_current(di);
1484 vsys = voltage_avg + (current_avg * DEF_PWRPATH_RES) / 1000;
1486 DBG("ZERO0: shtd_vol: org = %d, now = %d, zero_reserve_dsoc = %d\n",
1487 di->pdata->pwroff_vol, pwroff_vol, di->pdata->zero_reserve_dsoc);
1489 dead_voltage = pwroff_vol - current_avg *
1490 (di->bat_res + DEF_PWRPATH_RES) / 1000;
1491 ocv_voltage = voltage_avg - (current_avg * di->bat_res) / 1000;
1492 DBG("ZERO0: dead_voltage(shtd) = %d, ocv_voltage(now) = %d\n",
1493 dead_voltage, ocv_voltage);
1495 /* calc estimate soc and cap */
1496 dead_soc = rk818_bat_vol_to_zerosoc(di, dead_voltage);
1497 dead_cap = rk818_bat_vol_to_zerocap(di, dead_voltage);
1498 DBG("ZERO0: dead_soc = %d, dead_cap = %d\n",
1499 dead_soc, dead_cap);
1501 ocv_soc = rk818_bat_vol_to_zerosoc(di, ocv_voltage);
1502 ocv_cap = rk818_bat_vol_to_zerocap(di, ocv_voltage);
1503 DBG("ZERO0: ocv_soc = %d, ocv_cap = %d\n",
1506 /* xsoc: available rsoc */
1507 xsoc = ocv_soc - dead_soc;
1509 /* min_gap_xsoc: reserve xsoc */
1510 if (abs(current_avg) > ZERO_LOAD_LVL1)
1511 min_gap_xsoc = ZERO_GAP_XSOC3;
1512 else if (abs(current_avg) > ZERO_LOAD_LVL2)
1513 min_gap_xsoc = ZERO_GAP_XSOC2;
1515 min_gap_xsoc = ZERO_GAP_XSOC1;
1517 if ((xsoc <= 30) && (di->dsoc >= di->pdata->zero_reserve_dsoc))
1518 min_gap_xsoc = min_gap_xsoc + ZERO_GAP_CALIB;
1520 di->zero_remain_cap = di->remain_cap;
1521 di->zero_timeout_cnt = 0;
1522 if ((di->dsoc <= 1) && (xsoc > 0)) {
1523 di->zero_linek = 400;
1524 di->zero_drop_sec = 0;
1525 } else if (xsoc >= 0) {
1526 di->zero_drop_sec = 0;
1527 di->zero_linek = (di->zero_dsoc + xsoc / 2) / DIV(xsoc);
1528 org_linek = di->zero_linek;
1529 /* battery energy mode to use up voltage */
1530 if ((di->pdata->energy_mode) &&
1531 (xsoc - di->dsoc >= ZERO_GAP_XSOC3) &&
1532 (di->dsoc <= 10) && (di->zero_linek < 300)) {
1533 di->zero_linek = 300;
1534 DBG("ZERO-new: zero_linek adjust step0...\n");
1535 /* reserve enough power yet, slow down any way */
1536 } else if ((xsoc - di->dsoc >= min_gap_xsoc) ||
1537 ((xsoc - di->dsoc >= ZERO_GAP_XSOC2) &&
1538 (di->dsoc <= 10) && (xsoc > 15))) {
1540 di->dsoc >= di->pdata->zero_reserve_dsoc)
1541 di->zero_linek = 1200;
1542 else if (xsoc - di->dsoc >= 2 * min_gap_xsoc)
1543 di->zero_linek = 400;
1544 else if (xsoc - di->dsoc >= 3 + min_gap_xsoc)
1545 di->zero_linek = 600;
1547 di->zero_linek = 800;
1548 DBG("ZERO-new: zero_linek adjust step1...\n");
1549 /* control zero mode beginning enter */
1550 } else if ((di->zero_linek > 1800) && (di->dsoc > 70)) {
1551 di->zero_linek = 1800;
1552 DBG("ZERO-new: zero_linek adjust step2...\n");
1553 /* dsoc close to xsoc: it must reserve power */
1554 } else if ((di->zero_linek > 1000) && (di->zero_linek < 1200)) {
1555 di->zero_linek = 1200;
1556 DBG("ZERO-new: zero_linek adjust step3...\n");
1557 /* dsoc[5~15], dsoc < xsoc */
1558 } else if ((di->dsoc <= 15 && di->dsoc > 5) &&
1559 (di->zero_linek <= 1200)) {
1561 if (xsoc - di->dsoc >= min_gap_xsoc)
1562 di->zero_linek = 800;
1565 di->zero_linek = 1200;
1566 DBG("ZERO-new: zero_linek adjust step4...\n");
1567 /* dsoc[5, 100], dsoc < xsoc */
1568 } else if ((di->zero_linek < 1000) && (di->dsoc >= 5)) {
1569 if ((xsoc - di->dsoc) < min_gap_xsoc) {
1571 di->zero_linek = 1200;
1573 if (abs(di->current_avg) > 500)/* heavy */
1574 di->zero_linek = 900;
1576 di->zero_linek = 1000;
1578 DBG("ZERO-new: zero_linek adjust step5...\n");
1579 /* dsoc[0~5], dsoc < xsoc */
1580 } else if ((di->zero_linek < 1000) && (di->dsoc <= 5)) {
1581 if ((xsoc - di->dsoc) <= 3)
1582 di->zero_linek = 1200;
1584 di->zero_linek = 800;
1585 DBG("ZERO-new: zero_linek adjust step6...\n");
1589 di->zero_linek = 1000;
1590 if (!di->zero_drop_sec)
1591 di->zero_drop_sec = get_boot_sec();
1592 if (base2sec(di->zero_drop_sec) >= WAIT_DSOC_DROP_SEC) {
1593 DBG("ZERO0: t=%lu\n", base2sec(di->zero_drop_sec));
1594 di->zero_drop_sec = 0;
1596 di->zero_dsoc = (di->dsoc + 1) * 1000 -
1601 if (voltage_avg < pwroff_vol - 70) {
1602 if (!di->shtd_drop_sec)
1603 di->shtd_drop_sec = get_boot_sec();
1604 if (base2sec(di->shtd_drop_sec) > WAIT_SHTD_DROP_SEC) {
1605 BAT_INFO("voltage extreme low...soc:%d->0\n", di->dsoc);
1606 di->shtd_drop_sec = 0;
1610 di->shtd_drop_sec = 0;
1613 DBG("ZERO-new: org_linek=%d, zero_linek=%d, dsoc=%d, Xsoc=%d, "
1614 "rsoc=%d, gap=%d, v=%d, vsys=%d\n"
1615 "ZERO-new: di->zero_dsoc=%d, zero_remain_cap=%d, zero_drop=%ld, "
1617 org_linek, di->zero_linek, di->dsoc, xsoc, di->rsoc,
1618 min_gap_xsoc, voltage_avg, vsys, di->zero_dsoc, di->zero_remain_cap,
1619 base2sec(di->zero_drop_sec), base2sec(di->shtd_drop_sec));
1622 static void rk818_bat_finish_algo_prepare(struct rk818_battery *di)
1624 di->finish_base = get_boot_sec();
1625 if (!di->finish_base)
1626 di->finish_base = 1;
1629 static void rk818_bat_smooth_algo_prepare(struct rk818_battery *di)
1633 tmp_soc = di->sm_chrg_dsoc / 1000;
1634 if (tmp_soc != di->dsoc)
1635 di->sm_chrg_dsoc = di->dsoc * 1000;
1637 tmp_soc = di->sm_dischrg_dsoc / 1000;
1638 if (tmp_soc != di->dsoc)
1639 di->sm_dischrg_dsoc =
1640 (di->dsoc + 1) * 1000 - MIN_ACCURACY;
1642 DBG("<%s>. tmp_soc=%d, dsoc=%d, dsoc:sm_dischrg=%d, sm_chrg=%d\n",
1643 __func__, tmp_soc, di->dsoc, di->sm_dischrg_dsoc, di->sm_chrg_dsoc);
1645 rk818_bat_calc_sm_linek(di);
1648 static void rk818_bat_zero_algo_prepare(struct rk818_battery *di)
1652 di->zero_timeout_cnt = 0;
1653 tmp_dsoc = di->zero_dsoc / 1000;
1654 if (tmp_dsoc != di->dsoc)
1655 di->zero_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
1657 DBG("<%s>. first calc, reinit linek\n", __func__);
1659 rk818_bat_calc_zero_linek(di);
1662 static void rk818_bat_calc_zero_algorithm(struct rk818_battery *di)
1664 int tmp_soc = 0, sm_delta_dsoc = 0;
1666 tmp_soc = di->zero_dsoc / 1000;
1667 if (tmp_soc == di->dsoc)
1670 DBG("<%s>. enter: dsoc=%d, rsoc=%d\n", __func__, di->dsoc, di->rsoc);
1671 /* when discharge slow down, take sm chrg into calc */
1672 if (di->dsoc < di->rsoc) {
1673 /* take sm charge rest into calc */
1674 tmp_soc = di->sm_chrg_dsoc / 1000;
1675 if (tmp_soc == di->dsoc) {
1676 sm_delta_dsoc = di->sm_chrg_dsoc - di->dsoc * 1000;
1677 di->sm_chrg_dsoc = di->dsoc * 1000;
1678 di->zero_dsoc += sm_delta_dsoc;
1679 DBG("ZERO1: take sm chrg,delta=%d\n", sm_delta_dsoc);
1683 /* when discharge speed up, take sm dischrg into calc */
1684 if (di->dsoc > di->rsoc) {
1685 /* take sm discharge rest into calc */
1686 tmp_soc = di->sm_dischrg_dsoc / 1000;
1687 if (tmp_soc == di->dsoc) {
1688 sm_delta_dsoc = di->sm_dischrg_dsoc -
1689 ((di->dsoc + 1) * 1000 - MIN_ACCURACY);
1690 di->sm_dischrg_dsoc = (di->dsoc + 1) * 1000 -
1692 di->zero_dsoc += sm_delta_dsoc;
1693 DBG("ZERO1: take sm dischrg,delta=%d\n", sm_delta_dsoc);
1697 /* check overflow */
1698 if (di->zero_dsoc > (di->dsoc + 1) * 1000 - MIN_ACCURACY) {
1699 DBG("ZERO1: zero dsoc overflow: %d\n", di->zero_dsoc);
1700 di->zero_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
1703 /* check new dsoc */
1704 tmp_soc = di->zero_dsoc / 1000;
1705 if (tmp_soc != di->dsoc) {
1706 /* avoid dsoc jump when heavy load */
1707 if ((di->dsoc - tmp_soc) > 1) {
1709 di->zero_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
1710 DBG("ZERO1: heavy load...\n");
1714 di->zero_drop_sec = 0;
1718 DBG("ZERO1: zero_dsoc(Y0)=%d, dsoc=%d, rsoc=%d, tmp_soc=%d\n",
1719 di->zero_dsoc, di->dsoc, di->rsoc, tmp_soc);
1720 DBG("ZERO1: sm_dischrg_dsoc=%d, sm_chrg_dsoc=%d\n",
1721 di->sm_dischrg_dsoc, di->sm_chrg_dsoc);
1724 static void rk818_bat_zero_algorithm(struct rk818_battery *di)
1726 int delta_cap = 0, delta_soc = 0;
1728 di->zero_timeout_cnt++;
1729 delta_cap = di->zero_remain_cap - di->remain_cap;
1730 delta_soc = di->zero_linek * (delta_cap * 100) / DIV(di->fcc);
1732 DBG("ZERO1: zero_linek=%d, zero_dsoc(Y0)=%d, dsoc=%d, rsoc=%d\n"
1733 "ZERO1: delta_soc(X0)=%d, delta_cap=%d, zero_remain_cap = %d\n"
1734 "ZERO1: timeout_cnt=%d, sm_dischrg=%d, sm_chrg=%d\n\n",
1735 di->zero_linek, di->zero_dsoc, di->dsoc, di->rsoc,
1736 delta_soc, delta_cap, di->zero_remain_cap,
1737 di->zero_timeout_cnt, di->sm_dischrg_dsoc, di->sm_chrg_dsoc);
1739 if ((delta_soc >= MIN_ZERO_DSOC_ACCURACY) ||
1740 (di->zero_timeout_cnt > MIN_ZERO_OVERCNT) ||
1741 (di->zero_linek == 0)) {
1742 DBG("ZERO1:--------- enter calc -----------\n");
1743 di->zero_timeout_cnt = 0;
1744 di->zero_dsoc -= delta_soc;
1745 rk818_bat_calc_zero_algorithm(di);
1746 rk818_bat_calc_zero_linek(di);
1750 static void rk818_bat_dump_time_table(struct rk818_battery *di)
1753 static int old_index;
1755 int mod = di->dsoc % 10;
1756 int index = di->dsoc / 10;
1759 if (rk818_bat_chrg_online(di))
1760 time = base2min(di->plug_in_base);
1762 time = base2min(di->plug_out_base);
1764 if ((mod == 0) && (index > 0) && (old_index != index)) {
1765 di->dbg_chrg_min[index - 1] = time - old_min;
1770 for (i = 1; i < 11; i++)
1771 DBG("Time[%d]=%d, ", (i * 10), di->dbg_chrg_min[i - 1]);
1775 static void rk818_bat_debug_info(struct rk818_battery *di)
1777 u8 sup_tst, ggcon, ggsts, vb_mod, ts_ctrl, reboot_cnt;
1778 u8 usb_ctrl, chrg_ctrl1, thermal;
1779 u8 int_sts1, int_sts2;
1780 u8 int_msk1, int_msk2;
1781 u8 chrg_ctrl2, chrg_ctrl3, rtc, misc, dcdc_en;
1782 char *work_mode[] = {"ZERO", "FINISH", "UN", "UN", "SMOOTH"};
1783 char *bat_mode[] = {"BAT", "VIRTUAL"};
1785 if (rk818_bat_chrg_online(di))
1786 di->plug_out_base = get_boot_sec();
1788 di->plug_in_base = get_boot_sec();
1790 rk818_bat_dump_time_table(di);
1795 ts_ctrl = rk818_bat_read(di, RK818_TS_CTRL_REG);
1796 misc = rk818_bat_read(di, RK818_MISC_MARK_REG);
1797 ggcon = rk818_bat_read(di, RK818_GGCON_REG);
1798 ggsts = rk818_bat_read(di, RK818_GGSTS_REG);
1799 sup_tst = rk818_bat_read(di, RK818_SUP_STS_REG);
1800 vb_mod = rk818_bat_read(di, RK818_VB_MON_REG);
1801 usb_ctrl = rk818_bat_read(di, RK818_USB_CTRL_REG);
1802 chrg_ctrl1 = rk818_bat_read(di, RK818_CHRG_CTRL_REG1);
1803 chrg_ctrl2 = rk818_bat_read(di, RK818_CHRG_CTRL_REG2);
1804 chrg_ctrl3 = rk818_bat_read(di, RK818_CHRG_CTRL_REG3);
1805 rtc = rk818_bat_read(di, 0);
1806 thermal = rk818_bat_read(di, RK818_THERMAL_REG);
1807 int_sts1 = rk818_bat_read(di, RK818_INT_STS_REG1);
1808 int_sts2 = rk818_bat_read(di, RK818_INT_STS_REG2);
1809 int_msk1 = rk818_bat_read(di, RK818_INT_STS_MSK_REG1);
1810 int_msk2 = rk818_bat_read(di, RK818_INT_STS_MSK_REG2);
1811 dcdc_en = rk818_bat_read(di, RK818_DCDC_EN_REG);
1812 reboot_cnt = rk818_bat_read(di, RK818_REBOOT_CNT_REG);
1814 DBG("\n------- DEBUG REGS, [Ver: %s] -------------------\n"
1815 "GGCON=0x%2x, GGSTS=0x%2x, RTC=0x%2x, DCDC_EN2=0x%2x\n"
1816 "SUP_STS= 0x%2x, VB_MOD=0x%2x, USB_CTRL=0x%2x\n"
1817 "THERMAL=0x%2x, MISC_MARK=0x%2x, TS_CTRL=0x%2x\n"
1818 "CHRG_CTRL:REG1=0x%2x, REG2=0x%2x, REG3=0x%2x\n"
1819 "INT_STS: REG1=0x%2x, REG2=0x%2x\n"
1820 "INT_MSK: REG1=0x%2x, REG2=0x%2x\n",
1821 DRIVER_VERSION, ggcon, ggsts, rtc, dcdc_en,
1822 sup_tst, vb_mod, usb_ctrl,
1823 thermal, misc, ts_ctrl,
1824 chrg_ctrl1, chrg_ctrl2, chrg_ctrl3,
1825 int_sts1, int_sts2, int_msk1, int_msk2
1828 DBG("###############################################################\n"
1829 "Dsoc=%d, Rsoc=%d, Vavg=%d, Iavg=%d, Cap=%d, Fcc=%d, d=%d\n"
1830 "K=%d, Mode=%s, Oldcap=%d, Is=%d, Ip=%d, Vs=%d\n"
1831 "fb_temp=%d, bat_temp=%d, sample_res=%d\n"
1832 "off:i=0x%x, c=0x%x, p=%d, Rbat=%d, age_ocv_cap=%d, fb=%d\n"
1833 "adp:finish=%lu, boot_min=%lu, sleep_min=%lu, adc=%d, Vsys=%d\n"
1834 "bat:%s, meet: soc=%d, calc: dsoc=%d, rsoc=%d, Vocv=%d\n"
1835 "pwr: dsoc=%d, rsoc=%d, vol=%d, halt: st=%d, cnt=%d, reboot=%d\n"
1836 "ocv_c=%d: %d -> %d; max_c=%d: %d -> %d; force_c=%d: %d -> %d\n"
1837 "min=%d, init=%d, sw=%d, below0=%d, first=%d, changed=%d\n"
1838 "###############################################################\n",
1839 di->dsoc, di->rsoc, di->voltage_avg, di->current_avg,
1840 di->remain_cap, di->fcc, di->rsoc - di->dsoc,
1841 di->sm_linek, work_mode[di->work_mode], di->sm_remain_cap,
1842 di->res_div * chrg_cur_sel_array[chrg_ctrl1 & 0x0f],
1843 chrg_cur_input_array[usb_ctrl & 0x0f],
1844 chrg_vol_sel_array[(chrg_ctrl1 & 0x70) >> 4],
1845 feedback_temp_array[(thermal & 0x0c) >> 2], di->temperature,
1846 di->pdata->sample_res, rk818_bat_get_ioffset(di),
1847 rk818_bat_get_coffset(di), di->poffset, di->bat_res,
1848 di->age_adjust_cap, di->fb_blank, base2min(di->finish_base),
1849 base2min(di->boot_base), di->sleep_sum_sec / 60,
1850 di->adc_allow_update,
1851 di->voltage_avg + di->current_avg * DEF_PWRPATH_RES / 1000,
1852 bat_mode[di->pdata->bat_mode], di->dbg_meet_soc, di->dbg_calc_dsoc,
1853 di->dbg_calc_rsoc, di->voltage_ocv, di->dbg_pwr_dsoc,
1854 di->dbg_pwr_rsoc, di->dbg_pwr_vol, di->is_halt, di->halt_cnt,
1855 reboot_cnt, di->is_ocv_calib, di->ocv_pre_dsoc, di->ocv_new_dsoc,
1856 di->is_max_soc_offset, di->max_pre_dsoc, di->max_new_dsoc,
1857 di->is_force_calib, di->force_pre_dsoc, di->force_new_dsoc,
1858 di->pwroff_min, di->is_initialized, di->is_sw_reset,
1859 di->dbg_cap_low0, di->is_first_on, di->last_dsoc
1863 static void rk818_bat_init_capacity(struct rk818_battery *di, u32 cap)
1867 delta_cap = cap - di->remain_cap;
1871 di->age_adjust_cap += delta_cap;
1872 rk818_bat_init_coulomb_cap(di, cap);
1873 rk818_bat_smooth_algo_prepare(di);
1874 rk818_bat_zero_algo_prepare(di);
1877 static void rk818_bat_update_age_fcc(struct rk818_battery *di)
1879 int fcc, remain_cap, age_keep_min, lock_fcc;
1881 lock_fcc = rk818_bat_get_coulomb_cap(di);
1882 remain_cap = lock_fcc - di->age_ocv_cap - di->age_adjust_cap;
1883 age_keep_min = base2min(di->age_keep_sec);
1885 DBG("%s: lock_fcc=%d, age_ocv_cap=%d, age_adjust_cap=%d, remain_cap=%d,"
1886 "age_allow_update=%d, age_keep_min=%d\n",
1887 __func__, lock_fcc, di->age_ocv_cap, di->age_adjust_cap, remain_cap,
1888 di->age_allow_update, age_keep_min);
1890 if ((di->chrg_status == CHARGE_FINISH) && (di->age_allow_update) &&
1891 (age_keep_min < 1200)) {
1892 di->age_allow_update = false;
1893 fcc = remain_cap * 100 / DIV(100 - di->age_ocv_soc);
1894 BAT_INFO("lock_fcc=%d, calc_cap=%d, age: soc=%d, cap=%d, "
1895 "level=%d, fcc:%d->%d?\n",
1896 lock_fcc, remain_cap, di->age_ocv_soc,
1897 di->age_ocv_cap, di->age_level, di->fcc, fcc);
1899 if ((fcc < di->qmax) && (fcc > MIN_FCC)) {
1900 BAT_INFO("fcc:%d->%d!\n", di->fcc, fcc);
1902 rk818_bat_init_capacity(di, di->fcc);
1903 rk818_bat_save_fcc(di, di->fcc);
1904 rk818_bat_save_age_level(di, di->age_level);
1909 static void rk818_bat_wait_finish_sig(struct rk818_battery *di)
1911 int chrg_finish_vol = di->pdata->max_chrg_voltage;
1913 if (!rk818_bat_chrg_online(di))
1916 if ((di->chrg_status == CHARGE_FINISH) && (di->adc_allow_update) &&
1917 (di->voltage_avg > chrg_finish_vol - 150)) {
1918 rk818_bat_update_age_fcc(di);
1919 if (rk818_bat_adc_calib(di))
1920 di->adc_allow_update = false;
1924 static void rk818_bat_finish_algorithm(struct rk818_battery *di)
1926 unsigned long finish_sec, soc_sec;
1927 int plus_soc, finish_current, rest = 0;
1930 if ((di->remain_cap != di->fcc) &&
1931 (rk818_bat_get_chrg_status(di) == CHARGE_FINISH)) {
1932 di->age_adjust_cap += (di->fcc - di->remain_cap);
1933 rk818_bat_init_coulomb_cap(di, di->fcc);
1937 if (di->dsoc < 100) {
1938 if (!di->finish_base)
1939 di->finish_base = get_boot_sec();
1940 finish_current = (di->rsoc - di->dsoc) > FINISH_MAX_SOC_DELAY ?
1941 FINISH_CHRG_CUR2 : FINISH_CHRG_CUR1;
1942 finish_sec = base2sec(di->finish_base);
1943 soc_sec = di->fcc * 3600 / 100 / DIV(finish_current);
1944 plus_soc = finish_sec / DIV(soc_sec);
1945 if (finish_sec > soc_sec) {
1946 rest = finish_sec % soc_sec;
1947 di->dsoc += plus_soc;
1948 di->finish_base = get_boot_sec();
1949 if (di->finish_base > rest)
1950 di->finish_base = get_boot_sec() - rest;
1952 DBG("<%s>.CHARGE_FINISH:dsoc<100,dsoc=%d\n"
1953 "soc_time=%lu, sec_finish=%lu, plus_soc=%d, rest=%d\n",
1954 __func__, di->dsoc, soc_sec, finish_sec, plus_soc, rest);
1958 static void rk818_bat_calc_smooth_dischrg(struct rk818_battery *di)
1960 int tmp_soc = 0, sm_delta_dsoc = 0, zero_delta_dsoc = 0;
1962 tmp_soc = di->sm_dischrg_dsoc / 1000;
1963 if (tmp_soc == di->dsoc)
1966 DBG("<%s>. enter: dsoc=%d, rsoc=%d\n", __func__, di->dsoc, di->rsoc);
1967 /* when dischrge slow down, take sm charge rest into calc */
1968 if (di->dsoc < di->rsoc) {
1969 tmp_soc = di->sm_chrg_dsoc / 1000;
1970 if (tmp_soc == di->dsoc) {
1971 sm_delta_dsoc = di->sm_chrg_dsoc - di->dsoc * 1000;
1972 di->sm_chrg_dsoc = di->dsoc * 1000;
1973 di->sm_dischrg_dsoc += sm_delta_dsoc;
1974 DBG("<%s>. take sm dischrg, delta=%d\n",
1975 __func__, sm_delta_dsoc);
1979 /* when discharge speed up, take zero discharge rest into calc */
1980 if (di->dsoc > di->rsoc) {
1981 tmp_soc = di->zero_dsoc / 1000;
1982 if (tmp_soc == di->dsoc) {
1983 zero_delta_dsoc = di->zero_dsoc - ((di->dsoc + 1) *
1984 1000 - MIN_ACCURACY);
1985 di->zero_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
1986 di->sm_dischrg_dsoc += zero_delta_dsoc;
1987 DBG("<%s>. take zero schrg, delta=%d\n",
1988 __func__, zero_delta_dsoc);
1992 /* check up overflow */
1993 if ((di->sm_dischrg_dsoc) > ((di->dsoc + 1) * 1000 - MIN_ACCURACY)) {
1994 DBG("<%s>. dischrg_dsoc up overflow\n", __func__);
1995 di->sm_dischrg_dsoc = (di->dsoc + 1) *
1996 1000 - MIN_ACCURACY;
1999 /* check new dsoc */
2000 tmp_soc = di->sm_dischrg_dsoc / 1000;
2001 if (tmp_soc != di->dsoc) {
2003 di->sm_chrg_dsoc = di->dsoc * 1000;
2006 DBG("<%s>. dsoc=%d, rsoc=%d, dsoc:sm_dischrg=%d, sm_chrg=%d, zero=%d\n",
2007 __func__, di->dsoc, di->rsoc, di->sm_dischrg_dsoc, di->sm_chrg_dsoc,
2012 static void rk818_bat_calc_smooth_chrg(struct rk818_battery *di)
2014 int tmp_soc = 0, sm_delta_dsoc = 0, zero_delta_dsoc = 0;
2016 tmp_soc = di->sm_chrg_dsoc / 1000;
2017 if (tmp_soc == di->dsoc)
2020 DBG("<%s>. enter: dsoc=%d, rsoc=%d\n", __func__, di->dsoc, di->rsoc);
2021 /* when charge slow down, take zero & sm dischrg into calc */
2022 if (di->dsoc > di->rsoc) {
2023 /* take sm discharge rest into calc */
2024 tmp_soc = di->sm_dischrg_dsoc / 1000;
2025 if (tmp_soc == di->dsoc) {
2026 sm_delta_dsoc = di->sm_dischrg_dsoc -
2027 ((di->dsoc + 1) * 1000 - MIN_ACCURACY);
2028 di->sm_dischrg_dsoc = (di->dsoc + 1) * 1000 -
2030 di->sm_chrg_dsoc += sm_delta_dsoc;
2031 DBG("<%s>. take sm dischrg, delta=%d\n",
2032 __func__, sm_delta_dsoc);
2035 /* take zero discharge rest into calc */
2036 tmp_soc = di->zero_dsoc / 1000;
2037 if (tmp_soc == di->dsoc) {
2038 zero_delta_dsoc = di->zero_dsoc -
2039 ((di->dsoc + 1) * 1000 - MIN_ACCURACY);
2040 di->zero_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
2041 di->sm_chrg_dsoc += zero_delta_dsoc;
2042 DBG("<%s>. take zero dischrg, delta=%d\n",
2043 __func__, zero_delta_dsoc);
2047 /* check down overflow */
2048 if (di->sm_chrg_dsoc < di->dsoc * 1000) {
2049 DBG("<%s>. chrg_dsoc down overflow\n", __func__);
2050 di->sm_chrg_dsoc = di->dsoc * 1000;
2053 /* check new dsoc */
2054 tmp_soc = di->sm_chrg_dsoc / 1000;
2055 if (tmp_soc != di->dsoc) {
2057 di->sm_dischrg_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
2060 DBG("<%s>.dsoc=%d, rsoc=%d, dsoc: sm_dischrg=%d, sm_chrg=%d, zero=%d\n",
2061 __func__, di->dsoc, di->rsoc, di->sm_dischrg_dsoc, di->sm_chrg_dsoc,
2065 static void rk818_bat_smooth_algorithm(struct rk818_battery *di)
2067 int ydsoc = 0, delta_cap = 0, old_cap = 0;
2068 unsigned long tgt_sec = 0;
2070 di->remain_cap = rk818_bat_get_coulomb_cap(di);
2072 /* full charge: slow down */
2073 if ((di->dsoc == 99) && (di->chrg_status == CC_OR_CV)) {
2074 di->sm_linek = FULL_CHRG_K;
2075 /* terminal charge, slow down */
2076 } else if ((di->current_avg >= TERM_CHRG_CURR) &&
2077 (di->chrg_status == CC_OR_CV) && (di->dsoc >= TERM_CHRG_DSOC)) {
2078 di->sm_linek = TERM_CHRG_K;
2079 DBG("<%s>. terminal mode..\n", __func__);
2080 /* simulate charge, speed up */
2081 } else if ((di->current_avg <= SIMULATE_CHRG_CURR) &&
2082 (di->current_avg > 0) && (di->chrg_status == CC_OR_CV) &&
2083 (di->dsoc < TERM_CHRG_DSOC) &&
2084 ((di->rsoc - di->dsoc) >= SIMULATE_CHRG_INTV)) {
2085 di->sm_linek = SIMULATE_CHRG_K;
2086 DBG("<%s>. simulate mode..\n", __func__);
2088 /* charge and discharge switch */
2089 if ((di->sm_linek * di->current_avg <= 0) ||
2090 (di->sm_linek == TERM_CHRG_K) ||
2091 (di->sm_linek == FULL_CHRG_K) ||
2092 (di->sm_linek == SIMULATE_CHRG_K)) {
2093 DBG("<%s>. linek mode, retinit sm linek..\n", __func__);
2094 rk818_bat_calc_sm_linek(di);
2098 old_cap = di->sm_remain_cap;
2100 * when dsoc equal rsoc(not include full, term, simulate case),
2101 * sm_linek should change to -1000/1000 smoothly to avoid dsoc+1/-1
2102 * right away, so change it after flat seconds
2104 if ((di->dsoc == di->rsoc) && (abs(di->sm_linek) != 1000) &&
2105 (di->sm_linek != FULL_CHRG_K && di->sm_linek != TERM_CHRG_K &&
2106 di->sm_linek != SIMULATE_CHRG_K)) {
2107 if (!di->flat_match_sec)
2108 di->flat_match_sec = get_boot_sec();
2109 tgt_sec = di->fcc * 3600 / 100 / DIV(abs(di->current_avg)) / 3;
2110 if (base2sec(di->flat_match_sec) >= tgt_sec) {
2111 di->flat_match_sec = 0;
2112 di->sm_linek = (di->current_avg >= 0) ? 1000 : -1000;
2114 DBG("<%s>. flat_sec=%ld, tgt_sec=%ld, sm_k=%d\n", __func__,
2115 base2sec(di->flat_match_sec), tgt_sec, di->sm_linek);
2117 di->flat_match_sec = 0;
2120 /* abs(k)=1000 or dsoc=100, stop calc */
2121 if ((abs(di->sm_linek) == 1000) || (di->current_avg >= 0 &&
2122 di->chrg_status == CC_OR_CV && di->dsoc >= 100)) {
2123 DBG("<%s>. sm_linek=%d\n", __func__, di->sm_linek);
2124 if (abs(di->sm_linek) == 1000) {
2125 di->dsoc = di->rsoc;
2126 di->sm_linek = (di->sm_linek > 0) ? 1000 : -1000;
2127 DBG("<%s>. dsoc == rsoc, sm_linek=%d\n",
2128 __func__, di->sm_linek);
2130 di->sm_remain_cap = di->remain_cap;
2131 di->sm_chrg_dsoc = di->dsoc * 1000;
2132 di->sm_dischrg_dsoc = (di->dsoc + 1) * 1000 - MIN_ACCURACY;
2133 DBG("<%s>. sm_dischrg_dsoc=%d, sm_chrg_dsoc=%d\n",
2134 __func__, di->sm_dischrg_dsoc, di->sm_chrg_dsoc);
2136 delta_cap = di->remain_cap - di->sm_remain_cap;
2137 if (delta_cap == 0) {
2138 DBG("<%s>. delta_cap = 0\n", __func__);
2141 ydsoc = di->sm_linek * abs(delta_cap) * 100 / DIV(di->fcc);
2143 DBG("<%s>. ydsoc = 0\n", __func__);
2146 di->sm_remain_cap = di->remain_cap;
2148 DBG("<%s>. k=%d, ydsoc=%d; cap:old=%d, new:%d; delta_cap=%d\n",
2149 __func__, di->sm_linek, ydsoc, old_cap,
2150 di->sm_remain_cap, delta_cap);
2152 /* discharge mode */
2154 di->sm_dischrg_dsoc += ydsoc;
2155 rk818_bat_calc_smooth_dischrg(di);
2158 di->sm_chrg_dsoc += ydsoc;
2159 rk818_bat_calc_smooth_chrg(di);
2164 rk818_bat_calc_sm_linek(di);
2170 * cccv and finish switch all the time will cause dsoc freeze,
2171 * if so, do finish chrg, 100ma is less than min finish_ma.
2173 static bool rk818_bat_fake_finish_mode(struct rk818_battery *di)
2175 if ((di->rsoc == 100) && (rk818_bat_get_chrg_status(di) == CC_OR_CV) &&
2176 (abs(di->current_avg) <= 100))
2182 static void rk818_bat_display_smooth(struct rk818_battery *di)
2184 /* discharge: reinit "zero & smooth" algorithm to avoid handling dsoc */
2185 if (di->s2r && !di->sleep_chrg_online) {
2186 DBG("s2r: discharge, reset algorithm...\n");
2188 rk818_bat_zero_algo_prepare(di);
2189 rk818_bat_smooth_algo_prepare(di);
2193 if (di->work_mode == MODE_FINISH) {
2194 DBG("step1: charge finish...\n");
2195 rk818_bat_finish_algorithm(di);
2196 if ((rk818_bat_get_chrg_status(di) != CHARGE_FINISH) &&
2197 !rk818_bat_fake_finish_mode(di)) {
2198 if ((di->current_avg < 0) &&
2199 (di->voltage_avg < di->pdata->zero_algorithm_vol)) {
2200 DBG("step1: change to zero mode...\n");
2201 rk818_bat_zero_algo_prepare(di);
2202 di->work_mode = MODE_ZERO;
2204 DBG("step1: change to smooth mode...\n");
2205 rk818_bat_smooth_algo_prepare(di);
2206 di->work_mode = MODE_SMOOTH;
2209 } else if (di->work_mode == MODE_ZERO) {
2210 DBG("step2: zero algorithm...\n");
2211 rk818_bat_zero_algorithm(di);
2212 if ((di->voltage_avg >= di->pdata->zero_algorithm_vol + 50) ||
2213 (di->current_avg >= 0)) {
2214 DBG("step2: change to smooth mode...\n");
2215 rk818_bat_smooth_algo_prepare(di);
2216 di->work_mode = MODE_SMOOTH;
2217 } else if ((rk818_bat_get_chrg_status(di) == CHARGE_FINISH) ||
2218 rk818_bat_fake_finish_mode(di)) {
2219 DBG("step2: change to finish mode...\n");
2220 rk818_bat_finish_algo_prepare(di);
2221 di->work_mode = MODE_FINISH;
2224 DBG("step3: smooth algorithm...\n");
2225 rk818_bat_smooth_algorithm(di);
2226 if ((di->current_avg < 0) &&
2227 (di->voltage_avg < di->pdata->zero_algorithm_vol)) {
2228 DBG("step3: change to zero mode...\n");
2229 rk818_bat_zero_algo_prepare(di);
2230 di->work_mode = MODE_ZERO;
2231 } else if ((rk818_bat_get_chrg_status(di) == CHARGE_FINISH) ||
2232 rk818_bat_fake_finish_mode(di)) {
2233 DBG("step3: change to finish mode...\n");
2234 rk818_bat_finish_algo_prepare(di);
2235 di->work_mode = MODE_FINISH;
2240 static void rk818_bat_relax_vol_calib(struct rk818_battery *di)
2244 vol = di->voltage_relax;
2245 soc = rk818_bat_vol_to_ocvsoc(di, vol);
2246 cap = rk818_bat_vol_to_ocvcap(di, vol);
2247 rk818_bat_init_capacity(di, cap);
2248 BAT_INFO("sleep ocv calib: rsoc=%d, cap=%d\n", soc, cap);
2251 static void rk818_bat_relife_age_flag(struct rk818_battery *di)
2253 u8 ocv_soc, ocv_cap, soc_level;
2255 if (di->voltage_relax <= 0)
2258 ocv_soc = rk818_bat_vol_to_ocvsoc(di, di->voltage_relax);
2259 ocv_cap = rk818_bat_vol_to_ocvcap(di, di->voltage_relax);
2260 DBG("<%s>. ocv_soc=%d, min=%lu, vol=%d\n", __func__,
2261 ocv_soc, di->sleep_dischrg_sec / 60, di->voltage_relax);
2263 /* sleep enough time and ocv_soc enough low */
2264 if (!di->age_allow_update && ocv_soc <= 10) {
2265 di->age_voltage = di->voltage_relax;
2266 di->age_ocv_cap = ocv_cap;
2267 di->age_ocv_soc = ocv_soc;
2268 di->age_adjust_cap = 0;
2271 di->age_level = 100;
2272 else if (ocv_soc < 5)
2277 soc_level = rk818_bat_get_age_level(di);
2278 if (soc_level > di->age_level) {
2279 di->age_allow_update = false;
2281 di->age_allow_update = true;
2282 di->age_keep_sec = get_boot_sec();
2285 BAT_INFO("resume: age_vol:%d, age_ocv_cap:%d, age_ocv_soc:%d, "
2286 "soc_level:%d, age_allow_update:%d, "
2288 di->age_voltage, di->age_ocv_cap, ocv_soc, soc_level,
2289 di->age_allow_update, di->age_level);
2293 static int rk818_bat_sleep_dischrg(struct rk818_battery *di)
2295 bool ocv_soc_updated = false;
2296 int tgt_dsoc, gap_soc, sleep_soc = 0;
2297 int pwroff_vol = di->pdata->pwroff_vol;
2298 unsigned long sleep_sec = di->sleep_dischrg_sec;
2300 DBG("<%s>. enter: dsoc=%d, rsoc=%d, rv=%d, v=%d, sleep_min=%lu\n",
2301 __func__, di->dsoc, di->rsoc, di->voltage_relax,
2302 di->voltage_avg, sleep_sec / 60);
2304 if (di->voltage_relax >= di->voltage_avg) {
2305 rk818_bat_relax_vol_calib(di);
2306 rk818_bat_restart_relax(di);
2307 rk818_bat_relife_age_flag(di);
2308 ocv_soc_updated = true;
2312 if (di->dsoc <= di->rsoc) {
2313 di->sleep_sum_cap = (SLP_CURR_MIN * sleep_sec / 3600);
2314 sleep_soc = di->sleep_sum_cap * 100 / DIV(di->fcc);
2315 tgt_dsoc = di->dsoc - sleep_soc;
2316 if (sleep_soc > 0) {
2317 BAT_INFO("calib0: rl=%d, dl=%d, intval=%d\n",
2318 di->rsoc, di->dsoc, sleep_soc);
2321 } else if ((tgt_dsoc < 5) && (di->dsoc >= 5)) {
2326 } else if (tgt_dsoc > 5) {
2327 di->dsoc = tgt_dsoc;
2331 DBG("%s: dsoc<=rsoc, sum_cap=%d==>sleep_soc=%d, tgt_dsoc=%d\n",
2332 __func__, di->sleep_sum_cap, sleep_soc, tgt_dsoc);
2334 /* di->dsoc > di->rsoc */
2335 di->sleep_sum_cap = (SLP_CURR_MAX * sleep_sec / 3600);
2336 sleep_soc = di->sleep_sum_cap / DIV(di->fcc / 100);
2337 gap_soc = di->dsoc - di->rsoc;
2339 BAT_INFO("calib1: rsoc=%d, dsoc=%d, intval=%d\n",
2340 di->rsoc, di->dsoc, sleep_soc);
2341 if (gap_soc > sleep_soc) {
2342 if ((gap_soc - 5) > (sleep_soc * 2))
2343 di->dsoc -= (sleep_soc * 2);
2345 di->dsoc -= sleep_soc;
2347 di->dsoc = di->rsoc;
2350 DBG("%s: dsoc>rsoc, sum_cap=%d=>sleep_soc=%d, gap_soc=%d\n",
2351 __func__, di->sleep_sum_cap, sleep_soc, gap_soc);
2354 if (di->voltage_avg <= pwroff_vol - 70) {
2356 rk_send_wakeup_key();
2357 BAT_INFO("low power sleeping, shutdown... %d\n", di->dsoc);
2360 if (ocv_soc_updated && sleep_soc && (di->rsoc - di->dsoc) < 5 &&
2363 BAT_INFO("low power sleeping, reserved... %d\n", di->dsoc);
2366 if (di->dsoc <= 0) {
2368 rk_send_wakeup_key();
2369 BAT_INFO("sleep dsoc is %d...\n", di->dsoc);
2372 DBG("<%s>. out: dsoc=%d, rsoc=%d, sum_cap=%d\n",
2373 __func__, di->dsoc, di->rsoc, di->sleep_sum_cap);
2378 static void rk818_bat_power_supply_changed(struct rk818_battery *di)
2381 static int old_soc = -1;
2385 else if (di->dsoc < 0)
2388 if (di->dsoc == old_soc)
2391 status = rk818_bat_read(di, RK818_SUP_STS_REG);
2392 status = (status & CHRG_STATUS_MSK) >> 4;
2394 di->last_dsoc = di->dsoc;
2395 power_supply_changed(di->bat);
2396 BAT_INFO("changed: dsoc=%d, rsoc=%d, v=%d, ov=%d c=%d, "
2397 "cap=%d, f=%d, st=%s\n",
2398 di->dsoc, di->rsoc, di->voltage_avg, di->voltage_ocv,
2399 di->current_avg, di->remain_cap, di->fcc, bat_status[status]);
2401 BAT_INFO("dl=%d, rl=%d, v=%d, halt=%d, halt_n=%d, max=%d, "
2402 "init=%d, sw=%d, calib=%d, below0=%d, force=%d\n",
2403 di->dbg_pwr_dsoc, di->dbg_pwr_rsoc, di->dbg_pwr_vol,
2404 di->is_halt, di->halt_cnt, di->is_max_soc_offset,
2405 di->is_initialized, di->is_sw_reset, di->is_ocv_calib,
2406 di->dbg_cap_low0, di->is_force_calib);
2409 static u8 rk818_bat_check_reboot(struct rk818_battery *di)
2413 cnt = rk818_bat_read(di, RK818_REBOOT_CNT_REG);
2416 if (cnt >= REBOOT_MAX_CNT) {
2417 BAT_INFO("reboot: %d --> %d\n", di->dsoc, di->rsoc);
2418 di->dsoc = di->rsoc;
2421 else if (di->dsoc < 0)
2423 rk818_bat_save_dsoc(di, di->dsoc);
2424 cnt = REBOOT_MAX_CNT;
2427 rk818_bat_save_reboot_cnt(di, cnt);
2428 DBG("reboot cnt: %d\n", cnt);
2433 static void rk818_bat_rsoc_daemon(struct rk818_battery *di)
2435 int est_vol, remain_cap;
2436 static unsigned long sec;
2438 if ((di->remain_cap < 0) && (di->fb_blank != 0)) {
2440 sec = get_boot_sec();
2441 wake_lock_timeout(&di->wake_lock,
2442 (di->pdata->monitor_sec + 1) * HZ);
2444 DBG("sec=%ld, hold_sec=%ld\n", sec, base2sec(sec));
2445 if (base2sec(sec) >= 60) {
2448 est_vol = di->voltage_avg -
2449 (di->bat_res * di->current_avg) / 1000;
2450 remain_cap = rk818_bat_vol_to_ocvcap(di, est_vol);
2451 rk818_bat_init_capacity(di, remain_cap);
2452 BAT_INFO("adjust cap below 0 --> %d, rsoc=%d\n",
2453 di->remain_cap, di->rsoc);
2454 wake_unlock(&di->wake_lock);
2461 static void rk818_bat_update_info(struct rk818_battery *di)
2463 di->voltage_avg = rk818_bat_get_avg_voltage(di);
2464 di->current_avg = rk818_bat_get_avg_current(di);
2465 di->voltage_relax = rk818_bat_get_relax_voltage(di);
2466 di->rsoc = rk818_bat_get_rsoc(di);
2467 di->remain_cap = rk818_bat_get_coulomb_cap(di);
2468 di->chrg_status = rk818_bat_get_chrg_status(di);
2471 if (di->remain_cap > di->fcc) {
2472 di->sm_remain_cap -= (di->remain_cap - di->fcc);
2473 DBG("<%s>. cap: remain=%d, sm_remain=%d\n",
2474 __func__, di->remain_cap, di->sm_remain_cap);
2475 rk818_bat_init_coulomb_cap(di, di->fcc);
2478 if (di->chrg_status != CHARGE_FINISH)
2479 di->finish_base = get_boot_sec();
2482 * we need update fcc in continuous charging state, if discharge state
2483 * keep at least 2 hour, we decide not to update fcc, so clear the
2484 * fcc update flag: age_allow_update.
2486 if (base2min(di->plug_out_base) > 120)
2487 di->age_allow_update = false;
2489 /* do adc calib: status must from cccv mode to finish mode */
2490 if (di->chrg_status == CC_OR_CV) {
2491 di->adc_allow_update = true;
2492 di->adc_calib_cnt = 0;
2496 /* get ntc resistance */
2497 static int rk818_bat_get_ntc_res(struct rk818_battery *di)
2501 val |= rk818_bat_read(di, RK818_TS1_ADC_REGL) << 0;
2502 val |= rk818_bat_read(di, RK818_TS1_ADC_REGH) << 8;
2504 val = val * NTC_CALC_FACTOR; /*reference voltage 2.2V,current 80ua*/
2505 DBG("<%s>. ntc_res=%d\n", __func__, val);
2510 static void rk818_bat_update_temperature(struct rk818_battery *di)
2512 u32 ntc_size, *ntc_table;
2515 ntc_table = di->pdata->ntc_table;
2516 ntc_size = di->pdata->ntc_size;
2517 di->temperature = VIRTUAL_TEMPERATURE;
2520 res = rk818_bat_get_ntc_res(di);
2521 if (res < ntc_table[ntc_size - 1]) {
2522 BAT_INFO("bat ntc upper max degree: R=%d\n", res);
2523 } else if (res > ntc_table[0]) {
2524 BAT_INFO("bat ntc lower min degree: R=%d\n", res);
2526 for (i = 0; i < ntc_size; i++) {
2527 if (res >= ntc_table[i])
2530 di->temperature = (i + di->pdata->ntc_degree_from) * 10;
2535 static void rk818_bat_init_dsoc_algorithm(struct rk818_battery *di)
2539 unsigned long soc_sec;
2540 const char *mode_name[] = { "MODE_ZERO", "MODE_FINISH",
2541 "MODE_SMOOTH_CHRG", "MODE_SMOOTH_DISCHRG", "MODE_SMOOTH", };
2544 rest |= rk818_bat_read(di, RK818_CALC_REST_REGH) << 8;
2545 rest |= rk818_bat_read(di, RK818_CALC_REST_REGL) << 0;
2548 buf = rk818_bat_read(di, RK818_MISC_MARK_REG);
2549 di->algo_rest_mode = (buf & ALGO_REST_MODE_MSK) >> ALGO_REST_MODE_SHIFT;
2551 if (rk818_bat_get_chrg_status(di) == CHARGE_FINISH) {
2552 if (di->algo_rest_mode == MODE_FINISH) {
2553 soc_sec = di->fcc * 3600 / 100 / FINISH_CHRG_CUR1;
2554 if ((rest / DIV(soc_sec)) > 0) {
2555 if (di->dsoc < 100) {
2557 di->algo_rest_val = rest % soc_sec;
2558 BAT_INFO("algorithm rest(%d) dsoc "
2562 di->algo_rest_val = 0;
2565 di->algo_rest_val = rest;
2568 di->algo_rest_val = rest;
2571 /* charge speed up */
2572 if ((rest / 1000) > 0 && rk818_bat_chrg_online(di)) {
2573 if (di->dsoc < di->rsoc) {
2575 di->algo_rest_val = rest % 1000;
2576 BAT_INFO("algorithm rest(%d) dsoc inc: %d\n",
2579 di->algo_rest_val = 0;
2581 /* discharge speed up */
2582 } else if (((rest / 1000) < 0) && !rk818_bat_chrg_online(di)) {
2583 if (di->dsoc > di->rsoc) {
2585 di->algo_rest_val = rest % 1000;
2586 BAT_INFO("algorithm rest(%d) dsoc sub: %d\n",
2589 di->algo_rest_val = 0;
2592 di->algo_rest_val = rest;
2596 if (di->dsoc >= 100)
2598 else if (di->dsoc <= 0)
2601 /* init current mode */
2602 di->voltage_avg = rk818_bat_get_avg_voltage(di);
2603 di->current_avg = rk818_bat_get_avg_current(di);
2604 if (rk818_bat_get_chrg_status(di) == CHARGE_FINISH) {
2605 rk818_bat_finish_algo_prepare(di);
2606 di->work_mode = MODE_FINISH;
2608 rk818_bat_smooth_algo_prepare(di);
2609 di->work_mode = MODE_SMOOTH;
2612 DBG("<%s>. init: org_rest=%d, rest=%d, mode=%s; "
2613 "doc(x1000): zero=%d, chrg=%d, dischrg=%d, finish=%lu\n",
2614 __func__, rest, di->algo_rest_val, mode_name[di->algo_rest_mode],
2615 di->zero_dsoc, di->sm_chrg_dsoc, di->sm_dischrg_dsoc,
2619 static void rk818_bat_save_algo_rest(struct rk818_battery *di)
2622 int16_t algo_rest = 0;
2624 int zero_rest = 0, sm_chrg_rest = 0;
2625 int sm_dischrg_rest = 0, finish_rest = 0;
2626 const char *mode_name[] = { "MODE_ZERO", "MODE_FINISH",
2627 "MODE_SMOOTH_CHRG", "MODE_SMOOTH_DISCHRG", "MODE_SMOOTH", };
2630 tmp_soc = (di->zero_dsoc) / 1000;
2631 if (tmp_soc == di->dsoc)
2632 zero_rest = di->zero_dsoc - ((di->dsoc + 1) * 1000 -
2636 tmp_soc = di->sm_chrg_dsoc / 1000;
2637 if (tmp_soc == di->dsoc)
2638 sm_chrg_rest = di->sm_chrg_dsoc - di->dsoc * 1000;
2641 tmp_soc = (di->sm_dischrg_dsoc) / 1000;
2642 if (tmp_soc == di->dsoc)
2643 sm_dischrg_rest = di->sm_dischrg_dsoc - ((di->dsoc + 1) * 1000 -
2646 /* last time is also finish chrg, then add last rest */
2647 if (di->algo_rest_mode == MODE_FINISH && di->algo_rest_val)
2648 finish_rest = base2sec(di->finish_base) + di->algo_rest_val;
2650 finish_rest = base2sec(di->finish_base);
2653 if ((rk818_bat_chrg_online(di) && (di->dsoc > di->rsoc)) ||
2654 (!rk818_bat_chrg_online(di) && (di->dsoc < di->rsoc)) ||
2655 (di->dsoc == di->rsoc)) {
2656 di->algo_rest_val = 0;
2658 DBG("<%s>. step1..\n", __func__);
2659 } else if (di->work_mode == MODE_FINISH) {
2660 algo_rest = finish_rest;
2661 DBG("<%s>. step2..\n", __func__);
2662 } else if (di->algo_rest_mode == MODE_FINISH) {
2663 algo_rest = zero_rest + sm_dischrg_rest + sm_chrg_rest;
2664 DBG("<%s>. step3..\n", __func__);
2666 if (rk818_bat_chrg_online(di) && (di->dsoc < di->rsoc))
2667 algo_rest = sm_chrg_rest + di->algo_rest_val;
2668 else if (!rk818_bat_chrg_online(di) && (di->dsoc > di->rsoc))
2669 algo_rest = zero_rest + sm_dischrg_rest +
2672 algo_rest = zero_rest + sm_dischrg_rest + sm_chrg_rest +
2674 DBG("<%s>. step4..\n", __func__);
2678 if ((di->work_mode == MODE_FINISH) || (di->work_mode == MODE_ZERO)) {
2679 mode = di->work_mode;
2680 } else {/* MODE_SMOOTH */
2681 if (di->sm_linek > 0)
2682 mode = MODE_SMOOTH_CHRG;
2684 mode = MODE_SMOOTH_DISCHRG;
2688 buf = rk818_bat_read(di, RK818_MISC_MARK_REG);
2689 buf &= ~ALGO_REST_MODE_MSK;
2690 buf |= (mode << ALGO_REST_MODE_SHIFT);
2691 rk818_bat_write(di, RK818_MISC_MARK_REG, buf);
2694 buf = (algo_rest >> 8) & 0xff;
2695 rk818_bat_write(di, RK818_CALC_REST_REGH, buf);
2696 buf = (algo_rest >> 0) & 0xff;
2697 rk818_bat_write(di, RK818_CALC_REST_REGL, buf);
2699 DBG("<%s>. rest: algo=%d, mode=%s, last_rest=%d; zero=%d, "
2700 "chrg=%d, dischrg=%d, finish=%lu\n",
2701 __func__, algo_rest, mode_name[mode], di->algo_rest_val, zero_rest,
2702 sm_chrg_rest, sm_dischrg_rest, base2sec(di->finish_base));
2705 static void rk818_bat_save_data(struct rk818_battery *di)
2707 rk818_bat_save_dsoc(di, di->dsoc);
2708 rk818_bat_save_cap(di, di->remain_cap);
2709 rk818_bat_save_algo_rest(di);
2712 static void rk818_battery_work(struct work_struct *work)
2714 struct rk818_battery *di =
2715 container_of(work, struct rk818_battery, bat_delay_work.work);
2717 rk818_bat_update_info(di);
2718 rk818_bat_wait_finish_sig(di);
2719 rk818_bat_rsoc_daemon(di);
2720 rk818_bat_update_temperature(di);
2721 rk818_bat_display_smooth(di);
2722 rk818_bat_power_supply_changed(di);
2723 rk818_bat_save_data(di);
2724 rk818_bat_debug_info(di);
2726 queue_delayed_work(di->bat_monitor_wq, &di->bat_delay_work,
2727 msecs_to_jiffies(di->monitor_ms));
2730 static irqreturn_t rk818_vb_low_irq(int irq, void *bat)
2732 struct rk818_battery *di = (struct rk818_battery *)bat;
2735 rk_send_wakeup_key();
2736 BAT_INFO("lower power yet, power off system! v=%d, c=%d, dsoc=%d\n",
2737 di->voltage_avg, di->current_avg, di->dsoc);
2742 static void rk818_bat_init_sysfs(struct rk818_battery *di)
2746 for (i = 0; i < ARRAY_SIZE(rk818_bat_attr); i++) {
2747 ret = sysfs_create_file(&di->dev->kobj,
2748 &rk818_bat_attr[i].attr);
2750 dev_err(di->dev, "create bat node(%s) error\n",
2751 rk818_bat_attr[i].attr.name);
2755 static int rk818_bat_init_irqs(struct rk818_battery *di)
2757 struct rk808 *rk818 = di->rk818;
2758 struct platform_device *pdev = di->pdev;
2761 vb_lo_irq = regmap_irq_get_virq(rk818->irq_data, RK818_IRQ_VB_LO);
2762 if (vb_lo_irq < 0) {
2763 dev_err(di->dev, "vb_lo_irq request failed!\n");
2767 ret = devm_request_threaded_irq(di->dev, vb_lo_irq, NULL,
2768 rk818_vb_low_irq, IRQF_TRIGGER_HIGH,
2769 "rk818_vb_low", di);
2771 dev_err(&pdev->dev, "vb_lo_irq request failed!\n");
2774 enable_irq_wake(vb_lo_irq);
2779 static void rk818_bat_init_info(struct rk818_battery *di)
2781 di->design_cap = di->pdata->design_capacity;
2782 di->qmax = di->pdata->design_qmax;
2783 di->bat_res = di->pdata->bat_res;
2784 di->monitor_ms = di->pdata->monitor_sec * TIMER_MS_COUNTS;
2785 di->boot_base = POWER_ON_SEC_BASE;
2786 di->res_div = (di->pdata->sample_res == SAMPLE_RES_20MR) ?
2787 SAMPLE_RES_DIV1 : SAMPLE_RES_DIV2;
2790 static int rk818_bat_rtc_sleep_sec(struct rk818_battery *di)
2793 int interval_sec = 0;
2795 struct timespec tv = { .tv_nsec = NSEC_PER_SEC >> 1, };
2796 struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
2798 err = rtc_read_time(rtc, &tm);
2800 dev_err(rtc->dev.parent, "hctosys: read hardware clk failed\n");
2804 err = rtc_valid_tm(&tm);
2806 dev_err(rtc->dev.parent, "hctosys: invalid date time\n");
2810 rtc_tm_to_time(&tm, &tv.tv_sec);
2811 interval_sec = tv.tv_sec - di->rtc_base.tv_sec;
2813 return (interval_sec > 0) ? interval_sec : 0;
2816 static void rk818_bat_init_ts1_detect(struct rk818_battery *di)
2820 if (!di->pdata->ntc_size)
2824 buf = rk818_bat_read(di, RK818_ADC_CTRL_REG);
2826 rk818_bat_write(di, RK818_ADC_CTRL_REG, buf);
2829 static void rk818_bat_set_shtd_vol(struct rk818_battery *di)
2833 /* set vbat lowest 3.0v shutdown */
2834 val = rk818_bat_read(di, RK818_VB_MON_REG);
2835 val &= ~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK);
2836 val |= (RK818_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN);
2837 rk818_bat_write(di, RK818_VB_MON_REG, val);
2839 /* disable low irq */
2840 rk818_bat_set_bits(di, RK818_INT_STS_MSK_REG1,
2841 VB_LOW_INT_EN, VB_LOW_INT_EN);
2844 static void rk818_bat_init_fg(struct rk818_battery *di)
2846 rk818_bat_enable_gauge(di);
2847 rk818_bat_init_voltage_kb(di);
2848 rk818_bat_init_coffset(di);
2849 rk818_bat_set_relax_sample(di);
2850 rk818_bat_set_ioffset_sample(di);
2851 rk818_bat_set_ocv_sample(di);
2852 rk818_bat_init_ts1_detect(di);
2853 rk818_bat_init_rsoc(di);
2854 rk818_bat_init_coulomb_cap(di, di->nac);
2855 rk818_bat_init_age_algorithm(di);
2856 rk818_bat_init_chrg_config(di);
2857 rk818_bat_set_shtd_vol(di);
2858 rk818_bat_init_zero_table(di);
2859 rk818_bat_init_caltimer(di);
2860 rk818_bat_init_dsoc_algorithm(di);
2862 di->voltage_avg = rk818_bat_get_avg_voltage(di);
2863 di->voltage_ocv = rk818_bat_get_ocv_voltage(di);
2864 di->voltage_relax = rk818_bat_get_relax_voltage(di);
2865 di->current_avg = rk818_bat_get_avg_current(di);
2866 di->remain_cap = rk818_bat_get_coulomb_cap(di);
2867 di->dbg_pwr_dsoc = di->dsoc;
2868 di->dbg_pwr_rsoc = di->rsoc;
2869 di->dbg_pwr_vol = di->voltage_avg;
2871 rk818_bat_dump_regs(di, 0x99, 0xee);
2872 DBG("nac=%d cap=%d ov=%d v=%d rv=%d dl=%d rl=%d c=%d\n",
2873 di->nac, di->remain_cap, di->voltage_ocv, di->voltage_avg,
2874 di->voltage_relax, di->dsoc, di->rsoc, di->current_avg);
2878 static int rk818_bat_parse_dt(struct rk818_battery *di)
2883 struct device_node *np = di->dev->of_node;
2884 struct battery_platform_data *pdata;
2885 struct device *dev = di->dev;
2887 pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
2892 /* init default param */
2893 pdata->bat_res = DEFAULT_BAT_RES;
2894 pdata->monitor_sec = DEFAULT_MONITOR_SEC;
2895 pdata->pwroff_vol = DEFAULT_PWROFF_VOL_THRESD;
2896 pdata->sleep_exit_current = DEFAULT_SLP_EXIT_CUR;
2897 pdata->sleep_enter_current = DEFAULT_SLP_ENTER_CUR;
2898 pdata->bat_mode = MODE_BATTARY;
2899 pdata->max_soc_offset = DEFAULT_MAX_SOC_OFFSET;
2900 pdata->sample_res = DEFAULT_SAMPLE_RES;
2901 pdata->energy_mode = DEFAULT_ENERGY_MODE;
2902 pdata->fb_temp = DEFAULT_FB_TEMP;
2903 pdata->zero_reserve_dsoc = DEFAULT_ZERO_RESERVE_DSOC;
2905 /* parse necessary param */
2906 if (!of_find_property(np, "ocv_table", &length)) {
2907 dev_err(dev, "ocv_table not found!\n");
2911 pdata->ocv_size = length / sizeof(u32);
2912 if (pdata->ocv_size <= 0) {
2913 dev_err(dev, "invalid ocv table\n");
2917 size = sizeof(*pdata->ocv_table) * pdata->ocv_size;
2918 pdata->ocv_table = devm_kzalloc(di->dev, size, GFP_KERNEL);
2919 if (!pdata->ocv_table)
2922 ret = of_property_read_u32_array(np, "ocv_table",
2928 ret = of_property_read_u32(np, "design_capacity", &out_value);
2930 dev_err(dev, "design_capacity not found!\n");
2933 pdata->design_capacity = out_value;
2935 ret = of_property_read_u32(np, "design_qmax", &out_value);
2937 dev_err(dev, "design_qmax not found!\n");
2940 pdata->design_qmax = out_value;
2941 ret = of_property_read_u32(np, "max_chrg_voltage", &out_value);
2943 dev_err(dev, "max_chrg_voltage missing!\n");
2946 pdata->max_chrg_voltage = out_value;
2947 if (out_value >= 4300)
2948 pdata->zero_algorithm_vol = DEFAULT_ALGR_VOL_THRESD2;
2950 pdata->zero_algorithm_vol = DEFAULT_ALGR_VOL_THRESD1;
2952 ret = of_property_read_u32(np, "fb_temperature", &pdata->fb_temp);
2954 dev_err(dev, "fb_temperature missing!\n");
2956 ret = of_property_read_u32(np, "sample_res", &pdata->sample_res);
2958 dev_err(dev, "sample_res missing!\n");
2960 ret = of_property_read_u32(np, "energy_mode", &pdata->energy_mode);
2962 dev_err(dev, "energy_mode missing!\n");
2964 ret = of_property_read_u32(np, "max_soc_offset",
2965 &pdata->max_soc_offset);
2967 dev_err(dev, "max_soc_offset missing!\n");
2969 ret = of_property_read_u32(np, "monitor_sec", &pdata->monitor_sec);
2971 dev_err(dev, "monitor_sec missing!\n");
2973 ret = of_property_read_u32(np, "zero_algorithm_vol",
2974 &pdata->zero_algorithm_vol);
2976 dev_err(dev, "zero_algorithm_vol missing!\n");
2978 ret = of_property_read_u32(np, "zero_reserve_dsoc",
2979 &pdata->zero_reserve_dsoc);
2981 ret = of_property_read_u32(np, "virtual_power", &pdata->bat_mode);
2983 dev_err(dev, "virtual_power missing!\n");
2985 ret = of_property_read_u32(np, "bat_res", &pdata->bat_res);
2987 dev_err(dev, "bat_res missing!\n");
2989 ret = of_property_read_u32(np, "sleep_enter_current",
2990 &pdata->sleep_enter_current);
2992 dev_err(dev, "sleep_enter_current missing!\n");
2994 ret = of_property_read_u32(np, "sleep_exit_current",
2995 &pdata->sleep_exit_current);
2997 dev_err(dev, "sleep_exit_current missing!\n");
2999 ret = of_property_read_u32(np, "power_off_thresd", &pdata->pwroff_vol);
3001 dev_err(dev, "power_off_thresd missing!\n");
3003 if (!of_find_property(np, "ntc_table", &length)) {
3004 pdata->ntc_size = 0;
3006 /* get ntc degree base value */
3007 ret = of_property_read_u32_index(np, "ntc_degree_from", 1,
3008 &pdata->ntc_degree_from);
3010 dev_err(dev, "invalid ntc_degree_from\n");
3014 of_property_read_u32_index(np, "ntc_degree_from", 0,
3017 pdata->ntc_degree_from = -pdata->ntc_degree_from;
3019 pdata->ntc_size = length / sizeof(u32);
3022 if (pdata->ntc_size) {
3023 size = sizeof(*pdata->ntc_table) * pdata->ntc_size;
3024 pdata->ntc_table = devm_kzalloc(di->dev, size, GFP_KERNEL);
3025 if (!pdata->ntc_table)
3028 ret = of_property_read_u32_array(np, "ntc_table",
3035 DBG("the battery dts info dump:\n"
3037 "design_capacity:%d\n"
3039 "sleep_enter_current:%d\n"
3040 "sleep_exit_current:%d\n"
3041 "zero_algorithm_vol:%d\n"
3042 "zero_reserve_dsoc:%d\n"
3044 "max_soc_offset:%d\n"
3045 "virtual_power:%d\n"
3049 "ntc_degree_from:%d\n"
3050 "ntc_degree_to:%d\n",
3051 pdata->bat_res, pdata->design_capacity, pdata->design_qmax,
3052 pdata->sleep_enter_current, pdata->sleep_exit_current,
3053 pdata->zero_algorithm_vol, pdata->zero_reserve_dsoc,
3055 pdata->max_soc_offset, pdata->bat_mode, pdata->pwroff_vol,
3056 pdata->sample_res, pdata->ntc_size, pdata->ntc_degree_from,
3057 pdata->ntc_degree_from + pdata->ntc_size - 1
3063 static int rk818_bat_parse_dt(struct rk818_battery *di)
3069 static const struct of_device_id rk818_battery_of_match[] = {
3070 {.compatible = "rk818-battery",},
3074 static int rk818_battery_probe(struct platform_device *pdev)
3076 const struct of_device_id *of_id =
3077 of_match_device(rk818_battery_of_match, &pdev->dev);
3078 struct rk818_battery *di;
3079 struct rk808 *rk818 = dev_get_drvdata(pdev->dev.parent);
3083 dev_err(&pdev->dev, "Failed to find matching dt id\n");
3087 di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
3093 di->dev = &pdev->dev;
3094 di->regmap = rk818->regmap;
3095 platform_set_drvdata(pdev, di);
3097 ret = rk818_bat_parse_dt(di);
3099 dev_err(di->dev, "rk818 battery parse dt failed!\n");
3103 if (!is_rk818_bat_exist(di)) {
3104 di->pdata->bat_mode = MODE_VIRTUAL;
3105 dev_err(di->dev, "no battery, virtual power mode\n");
3108 ret = rk818_bat_init_irqs(di);
3110 dev_err(di->dev, "rk818 bat init irqs failed!\n");
3114 ret = rk818_bat_init_power_supply(di);
3116 dev_err(di->dev, "rk818 power supply register failed!\n");
3120 rk818_bat_init_info(di);
3121 rk818_bat_init_fg(di);
3122 rk818_bat_init_sysfs(di);
3123 rk818_bat_register_fb_notify(di);
3124 wake_lock_init(&di->wake_lock, WAKE_LOCK_SUSPEND, "rk818_bat_lock");
3125 di->bat_monitor_wq = alloc_ordered_workqueue("%s",
3126 WQ_MEM_RECLAIM | WQ_FREEZABLE, "rk818-bat-monitor-wq");
3127 INIT_DELAYED_WORK(&di->bat_delay_work, rk818_battery_work);
3128 queue_delayed_work(di->bat_monitor_wq, &di->bat_delay_work,
3129 msecs_to_jiffies(TIMER_MS_COUNTS * 5));
3131 BAT_INFO("driver version %s\n", DRIVER_VERSION);
3136 static int rk818_battery_suspend(struct platform_device *dev,
3139 struct rk818_battery *di = platform_get_drvdata(dev);
3142 cancel_delayed_work_sync(&di->bat_delay_work);
3145 di->sleep_chrg_online = rk818_bat_chrg_online(di);
3146 di->sleep_chrg_status = rk818_bat_get_chrg_status(di);
3147 di->current_avg = rk818_bat_get_avg_current(di);
3148 di->remain_cap = rk818_bat_get_coulomb_cap(di);
3149 di->rsoc = rk818_bat_get_rsoc(di);
3150 do_gettimeofday(&di->rtc_base);
3151 rk818_bat_save_data(di);
3152 st = (rk818_bat_read(di, RK818_SUP_STS_REG) & CHRG_STATUS_MSK) >> 4;
3154 /* if not CHARGE_FINISH, reinit finish_base.
3155 * avoid sleep loop between suspend and resume
3157 if (di->sleep_chrg_status != CHARGE_FINISH)
3158 di->finish_base = get_boot_sec();
3160 /* avoid: enter suspend from MODE_ZERO: load from heavy to light */
3161 if ((di->work_mode == MODE_ZERO) &&
3162 (di->sleep_chrg_online) && (di->current_avg >= 0)) {
3163 DBG("suspend: MODE_ZERO exit...\n");
3164 /* it need't do prepare for mode finish and smooth, it will
3165 * be done in display_smooth
3167 if (di->sleep_chrg_status == CHARGE_FINISH) {
3168 di->work_mode = MODE_FINISH;
3169 di->finish_base = get_boot_sec();
3171 di->work_mode = MODE_SMOOTH;
3172 rk818_bat_smooth_algo_prepare(di);
3176 /* set vbat low than 3.4v to generate a wakeup irq */
3177 val = rk818_bat_read(di, RK818_VB_MON_REG);
3178 val &= (~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK));
3179 val |= (RK818_VBAT_LOW_3V4 | EN_VBAT_LOW_IRQ);
3180 rk818_bat_write(di, RK818_VB_MON_REG, val);
3181 rk818_bat_set_bits(di, RK818_INT_STS_MSK_REG1, VB_LOW_INT_EN, 0);
3183 BAT_INFO("suspend: dl=%d rl=%d c=%d v=%d cap=%d at=%ld ch=%d st=%s\n",
3184 di->dsoc, di->rsoc, di->current_avg,
3185 rk818_bat_get_avg_voltage(di), rk818_bat_get_coulomb_cap(di),
3186 di->sleep_dischrg_sec, di->sleep_chrg_online, bat_status[st]);
3191 static int rk818_battery_resume(struct platform_device *dev)
3193 struct rk818_battery *di = platform_get_drvdata(dev);
3194 int interval_sec, time_step, pwroff_vol;
3198 di->current_avg = rk818_bat_get_avg_current(di);
3199 di->voltage_relax = rk818_bat_get_relax_voltage(di);
3200 di->voltage_avg = rk818_bat_get_avg_voltage(di);
3201 di->remain_cap = rk818_bat_get_coulomb_cap(di);
3202 di->rsoc = rk818_bat_get_rsoc(di);
3203 interval_sec = rk818_bat_rtc_sleep_sec(di);
3204 di->sleep_sum_sec += interval_sec;
3205 pwroff_vol = di->pdata->pwroff_vol;
3206 st = (rk818_bat_read(di, RK818_SUP_STS_REG) & CHRG_STATUS_MSK) >> 4;
3208 if (!di->sleep_chrg_online) {
3209 /* only add up discharge sleep seconds */
3210 di->sleep_dischrg_sec += interval_sec;
3211 if (di->voltage_avg <= pwroff_vol + 50)
3212 time_step = DISCHRG_TIME_STEP1;
3214 time_step = DISCHRG_TIME_STEP2;
3217 BAT_INFO("resume: dl=%d rl=%d c=%d v=%d rv=%d "
3218 "cap=%d dt=%d at=%ld ch=%d st=%s\n",
3219 di->dsoc, di->rsoc, di->current_avg, di->voltage_avg,
3220 di->voltage_relax, rk818_bat_get_coulomb_cap(di), interval_sec,
3221 di->sleep_dischrg_sec, di->sleep_chrg_online, bat_status[st]);
3223 /* sleep: enough time and discharge */
3224 if ((di->sleep_dischrg_sec > time_step) && (!di->sleep_chrg_online)) {
3225 if (rk818_bat_sleep_dischrg(di))
3226 di->sleep_dischrg_sec = 0;
3229 rk818_bat_save_data(di);
3231 /* set vbat lowest 3.0v shutdown */
3232 val = rk818_bat_read(di, RK818_VB_MON_REG);
3233 val &= ~(VBAT_LOW_VOL_MASK | VBAT_LOW_ACT_MASK);
3234 val |= (RK818_VBAT_LOW_3V0 | EN_VABT_LOW_SHUT_DOWN);
3235 rk818_bat_write(di, RK818_VB_MON_REG, val);
3236 rk818_bat_set_bits(di, RK818_INT_STS_MSK_REG1,
3237 VB_LOW_INT_EN, VB_LOW_INT_EN);
3239 /* charge/lowpower lock: for battery work to update dsoc and rsoc */
3240 if ((di->sleep_chrg_online) ||
3241 (!di->sleep_chrg_online && di->voltage_avg < di->pdata->pwroff_vol))
3242 wake_lock_timeout(&di->wake_lock, msecs_to_jiffies(2000));
3244 queue_delayed_work(di->bat_monitor_wq, &di->bat_delay_work,
3245 msecs_to_jiffies(1000));
3250 static void rk818_battery_shutdown(struct platform_device *dev)
3253 struct rk818_battery *di = platform_get_drvdata(dev);
3255 cancel_delayed_work_sync(&di->bat_delay_work);
3256 cancel_delayed_work_sync(&di->calib_delay_work);
3257 rk818_bat_unregister_fb_notify(di);
3258 del_timer(&di->caltimer);
3259 if (base2sec(di->boot_base) < REBOOT_PERIOD_SEC)
3260 cnt = rk818_bat_check_reboot(di);
3262 rk818_bat_save_reboot_cnt(di, 0);
3264 BAT_INFO("shutdown: dl=%d rl=%d c=%d v=%d cap=%d f=%d ch=%d n=%d "
3265 "mode=%d rest=%d\n",
3266 di->dsoc, di->rsoc, di->current_avg, di->voltage_avg,
3267 di->remain_cap, di->fcc, rk818_bat_chrg_online(di), cnt,
3268 di->algo_rest_mode, di->algo_rest_val);
3271 static struct platform_driver rk818_battery_driver = {
3272 .probe = rk818_battery_probe,
3273 .suspend = rk818_battery_suspend,
3274 .resume = rk818_battery_resume,
3275 .shutdown = rk818_battery_shutdown,
3277 .name = "rk818-battery",
3278 .of_match_table = rk818_battery_of_match,
3282 static int __init battery_init(void)
3284 return platform_driver_register(&rk818_battery_driver);
3286 fs_initcall_sync(battery_init);
3288 static void __exit battery_exit(void)
3290 platform_driver_unregister(&rk818_battery_driver);
3292 module_exit(battery_exit);
3294 MODULE_LICENSE("GPL");
3295 MODULE_ALIAS("platform:rk818-battery");
3296 MODULE_AUTHOR("chenjh<chenjh@rock-chips.com>");