2 * rk818/rk819 battery driver
4 * Copyright (C) 2014 Rockchip Electronics Co., Ltd
5 * Author: zhangqing <zhangqing@rock-chips.com>
6 * chenjh <chenjh@rock-chips.com>
7 * Andy Yan <andy.yan@rock-chips.com>
9 * Copyright (C) 2008-2009 Texas Instruments, Inc.
10 * Author: Texas Instruments, Inc.
12 * Copyright (C) 2008-2009 Texas Instruments, Inc.
13 * Author: Texas Instruments, Inc.
14 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
15 * Author: zhangqing <zhangqing@rock-chips.com>
16 * Copyright (C) 2014-2015 Intel Mobile Communications GmbH
18 * This program is free software; you can redistribute it and/or modify it
19 * under the terms and conditions of the GNU General Public License,
20 * version 2, as published by the Free Software Foundation.
22 * This program is distributed in the hope it will be useful, but WITHOUT
23 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
24 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/param.h>
31 #include <linux/jiffies.h>
32 #include <linux/workqueue.h>
33 #include <linux/delay.h>
34 #include <linux/platform_device.h>
35 #include <linux/power_supply.h>
36 #include <linux/idr.h>
37 #include <linux/i2c.h>
38 #include <linux/slab.h>
39 #include <asm/unaligned.h>
40 #include <linux/gpio.h>
41 #include <linux/proc_fs.h>
42 #include <linux/uaccess.h>
43 #include <linux/mfd/rk818.h>
44 #include <linux/time.h>
45 #include <linux/interrupt.h>
46 #include <linux/rtc.h>
47 #include <linux/wakelock.h>
48 #include <linux/of_gpio.h>
49 #include <linux/irq.h>
50 #include <linux/irqdomain.h>
51 #include <linux/usb/phy.h>
54 #if defined(CONFIG_X86_INTEL_SOFIA)
55 #include <linux/usb/phy-intel.h>
57 #include <linux/power/rk_usbbc.h>
59 #include "rk818_battery.h"
61 /* if you want to disable, don't set it as 0,
62 just be: "static int dbg_enable;" is ok*/
64 static int dbg_enable;
65 #define RK818_SYS_DBG 1
67 module_param_named(dbg_level, dbg_enable, int, 0644);
69 #define DBG(args...) \
76 #define DEFAULT_BAT_RES 135
77 #define DEFAULT_CHRG_VOL 4200
78 #define DEFAULT_CHRG_CUR 1000
79 #define DEFAULT_INPUT_CUR 1400
80 #define DEFAULT_SLP_ENTER_CUR 600
81 #define DEFAULT_SLP_EXIT_CUR 600
83 #define DSOC_DISCHRG_EMU_CURR 1200
84 #define DSOC_DISCHRG_FAST_DEC_SEC 120 /*seconds*/
85 #define DSOC_DISCHRG_FAST_EER_RANGE 10
86 #define DSOC_CHRG_FAST_CALIB_CURR_MAX 400 /*mA*/
87 #define DSOC_CHRG_FAST_INC_SEC 120 /*seconds*/
88 #define DSOC_CHRG_FAST_EER_RANGE 10
89 #define DSOC_CHRG_EMU_CURR 1200
90 #define DSOC_CHRG_TERM_CURR 600
91 #define DSOC_CHRG_TERM_VOL 4100
92 #define CHRG_FINISH_VOL 4100
94 /*realtime RSOC calib param*/
95 #define RSOC_DISCHRG_ERR_LOWER 40
96 #define RSOC_DISCHRG_ERR_UPPER 50
97 #define RSOC_ERR_CHCK_CNT 15
98 #define RSOC_COMPS 20 /*compensation*/
99 #define RSOC_CALIB_CURR_MAX 900 /*mA*/
100 #define RSOC_CALIB_DISCHRGR_TIME 3 /*min*/
102 #define RSOC_RESUME_ERR 10
103 #define REBOOT_INTER_MIN 1
105 #define INTERPOLATE_MAX 1000
106 #define MAX_INT 0x7FFF
107 #define TIME_10MIN_SEC 600
109 #define CHRG_VOL_SHIFT 4
110 #define CHRG_ILIM_SHIFT 0
111 #define CHRG_ICUR_SHIFT 0
112 #define DEF_CHRG_VOL CHRG_VOL4200
113 #define DEF_CHRG_CURR_SEL CHRG_CUR1400mA
114 #define DEF_CHRG_CURR_LMT ILIM_2000MA
116 /*TEST_POWER_MODE params*/
117 #define TEST_CURRENT 1000
118 #define TEST_VOLTAGE 3800
120 #define TEST_STATUS POWER_SUPPLY_STATUS_CHARGING
121 #define TEST_PRESET 1
122 #define TEST_AC_ONLINE 1
123 #define TEST_USB_ONLINE 0
125 #define ZERO_ALGOR_THRESD 3800
126 #define DISCHRG_ZERO_MODE 1
127 #define DISCHRG_NORMAL_MODE 0
128 #define DEF_LAST_ZERO_MODE_SOC -1
130 #define DISCHRG_MODE 0
133 #define TREND_STAT_FLAT 0
134 #define TREND_STAT_DOWN -1
135 #define TREND_STAT_UP 1
136 #define TREND_CAP_DIFF 5
138 #define POWER_ON_SEC_BASE 1
141 #define SLP_CURR_MAX 40
142 #define SLP_CURR_MIN 6
143 #define WAKEUP_SEC_THRESD 40
144 #define CHRG_TIME_STEP (60)
145 #define DISCHRG_TIME_STEP_0 (30 * 60)
146 #define DISCHRG_TIME_STEP_1 (60 * 60)
148 #define DEF_PCB_OFFSET 42
149 #define DEF_CAL_OFFSET 0x832
150 #define DEF_PWRPATH_RES 50
151 #define SEC_TO_EMPTY 300
152 #define DSOC_CHRG_FINISH_CURR 1100
153 #define SLP_CHRG_CURR 1000
154 #define SLP_DSOC_VOL_THRESD 3600
155 /*if voltage is lower than this thresd,
156 we consider it as invalid
158 #define INVALID_VOL_THRESD 2500
159 #define PWR_OFF_THRESD 3400
160 #define MIN_ZERO_ACCURACY 5 /*0.01%*/
161 #define MIN_ROUND_ACCURACY 1
163 #define MAX_FCC 10000
166 * the following table value depends on datasheet
168 int CHRG_V_LMT[] = {4050, 4100, 4150, 4200, 4300, 4350};
170 int CHRG_I_CUR[] = {1000, 1200, 1400, 1600, 1800, 2000,
171 2250, 2400, 2600, 2800, 3000};
173 int CHRG_I_LMT[] = {450, 800, 850, 1000, 1250, 1500, 1750,
174 2000, 2250, 2500, 2750, 3000};
176 u8 CHRG_CVCC_HOUR[] = {4, 5, 6, 8, 10, 12, 14, 16};
178 #define RK818_DC_IN 0
179 #define RK818_DC_OUT 1
181 #define OCV_VALID_SHIFT (0)
182 #define OCV_CALIB_SHIFT (1)
183 #define FIRST_PWRON_SHIFT (2)
185 #define SEC_TO_MIN(x) ((x) / 60)
187 struct rk81x_battery {
189 struct cell_state cell;
190 struct power_supply bat;
191 struct power_supply ac;
192 struct power_supply usb;
193 struct delayed_work work;
195 struct pinctrl *pinctrl;
196 struct pinctrl_state *pins_default;
198 struct battery_platform_data *pdata;
213 uint16_t voltage_ocv;
214 uint16_t relax_voltage;
220 bool pcb_ioffset_updated;
237 int bat_res_update_cnt;
243 unsigned long dod0_time;
256 int current_k;/* (ICALIB0, ICALIB1) */
259 int voltage_k;/* VCALIB0 VCALIB1 */
262 int zero_timeout_cnt;
263 int zero_old_remain_cap;
268 int charge_smooth_time;
272 unsigned long suspend_time_sum;
276 int suspend_charge_current;
279 bool charge_smooth_status;
280 bool discharge_smooth_status;
286 struct notifier_block battery_nb;
287 struct usb_phy *usb_phy;
288 struct notifier_block usb_nb;
289 struct notifier_block fb_nb;
292 int s2r; /*suspend to resume*/
293 struct workqueue_struct *wq;
294 struct delayed_work battery_monitor_work;
295 struct delayed_work otg_check_work;
296 struct delayed_work usb_phy_delay_work;
297 struct delayed_work chrg_term_mode_switch_work;
298 struct delayed_work ac_usb_check_work;
299 struct delayed_work dc_det_check_work;
300 enum bc_port_type charge_otg;
303 struct wake_lock resume_wake_lock;
304 unsigned long plug_in_base;
305 unsigned long plug_out_base;
306 unsigned long finish_sig_base;
307 unsigned long power_on_base;
312 bool is_first_poweron;
315 int debug_finish_real_soc;
316 int debug_finish_temp_soc;
322 unsigned long wakeup_sec;
323 u32 delta_vol_smooth;
324 unsigned long dischrg_normal_base;
325 unsigned long dischrg_emu_base;
326 unsigned long chrg_normal_base;
327 unsigned long chrg_term_base;
328 unsigned long chrg_emu_base;
329 unsigned long chrg_finish_base;
330 unsigned long fcc_update_sec;
332 u8 dischrg_algorithm_mode;
333 int last_zero_mode_dsoc;
335 unsigned long dischrg_save_sec;
336 unsigned long chrg_save_sec;
337 struct timeval suspend_rtc_base;
340 u32 support_usb_adp, support_dc_adp, power_dc2otg;
342 #define to_device_info(x) container_of((x), \
343 struct rk81x_battery, bat)
345 #define to_ac_device_info(x) container_of((x), \
346 struct rk81x_battery, ac)
348 #define to_usb_device_info(x) container_of((x), \
349 struct rk81x_battery, usb)
351 static int loader_charged;
353 static int __init rk81x_bat_loader_charged(char *__unused)
357 pr_info("battery charged in loader\n");
361 __setup("loader_charged", rk81x_bat_loader_charged);
363 static u64 get_runtime_sec(void)
367 get_monotonic_boottime(&ts);
371 static inline unsigned long BASE_TO_SEC(unsigned long x)
374 return (get_runtime_sec() > x) ? (get_runtime_sec() - x) : 0;
379 static inline unsigned long BASE_TO_MIN(unsigned long x)
381 return BASE_TO_SEC(x) / 60;
384 static bool rk81x_bat_support_adp_type(enum hw_support_adp type)
389 case HW_ADP_TYPE_USB:
397 case HW_ADP_TYPE_DUAL:
398 if (support_usb_adp && support_dc_adp)
408 static bool rk81x_chrg_online(struct rk81x_battery *di)
410 return di->usb_online || di->ac_online;
413 static u32 interpolate(int value, u32 *table, int size)
418 for (i = 0; i < size; i++) {
419 if (value < table[i])
423 if ((i > 0) && (i < size)) {
424 d = (value - table[i-1]) * (INTERPOLATE_MAX / (size - 1));
425 d /= table[i] - table[i-1];
426 d = d + (i-1) * (INTERPOLATE_MAX / (size - 1));
428 d = i * ((INTERPOLATE_MAX + size / 2) / size);
437 /* Returns (a * b) / c */
438 static int32_t ab_div_c(u32 a, u32 b, u32 c)
444 sign = ((((a^b)^c) & 0x80000000) != 0);
450 tmp = (a * b + (c >> 1)) / c;
462 static int div(int val)
464 return (val == 0) ? 1 : val;
467 static int rk81x_bat_read(struct rk81x_battery *di, u8 reg,
468 u8 buf[], unsigned len)
473 for (i = 0; ret < 0 && i < 3; i++) {
474 ret = rk818_i2c_read(di->rk818, reg, len, buf);
476 dev_err(di->dev, "read reg:0x%02x failed\n", reg);
479 return (ret < 0) ? ret : 0;
482 static int rk81x_bat_write(struct rk81x_battery *di, u8 reg,
483 u8 const buf[], unsigned len)
488 for (i = 0; ret < 0 && i < 3; i++) {
489 ret = rk818_i2c_write(di->rk818, reg, (int)len, *buf);
491 dev_err(di->dev, "write reg:0x%02x failed\n", reg);
494 return (ret < 0) ? ret : 0;
497 static int rk81x_bat_set_bit(struct rk81x_battery *di, u8 reg, u8 shift)
502 for (i = 0; ret < 0 && i < 3; i++) {
503 ret = rk818_set_bits(di->rk818, reg, 1 << shift, 1 << shift);
505 dev_err(di->dev, "set reg:0x%02x failed\n", reg);
511 static int rk81x_bat_clr_bit(struct rk81x_battery *di, u8 reg, u8 shift)
516 for (i = 0; ret < 0 && i < 3; i++) {
517 ret = rk818_set_bits(di->rk818, reg, 1 << shift, 0 << shift);
519 dev_err(di->dev, "set reg:0x%02x failed\n", reg);
525 static u8 rk81x_bat_read_bit(struct rk81x_battery *di, u8 reg, u8 shift)
530 rk81x_bat_read(di, reg, &buf, 1);
531 val = (buf & BIT(shift)) >> shift;
535 static void rk81x_dbg_dmp_gauge_regs(struct rk81x_battery *di)
540 DBG("%s dump charger register start:\n", __func__);
541 for (i = 0xAC; i < 0xEE; i++) {
542 rk81x_bat_read(di, i, &buf, 1);
543 DBG("0x%02x : 0x%02x\n", i, buf);
548 static void rk81x_dbg_dmp_charger_regs(struct rk81x_battery *di)
553 DBG("%s dump the register start:\n", __func__);
554 for (i = 0x99; i < 0xAB; i++) {
555 rk81x_bat_read(di, i, &buf, 1);
556 DBG(" the register is 0x%02x, the value is 0x%02x\n", i, buf);
561 static void rk81x_bat_reset_zero_var(struct rk81x_battery *di)
563 di->dischrg_algorithm_mode = DISCHRG_NORMAL_MODE;
564 di->last_zero_mode_dsoc = DEF_LAST_ZERO_MODE_SOC;
567 static void rk81x_bat_capacity_init_post(struct rk81x_battery *di)
569 rk81x_bat_reset_zero_var(di);
570 di->trend_start_cap = di->remain_capacity;
573 static void rk81x_bat_capacity_init(struct rk81x_battery *di, u32 capacity)
579 delta_cap = capacity - di->remain_capacity;
583 di->adjust_cap += delta_cap;
585 capacity_ma = capacity * 2390;/* 2134;//36*14/900*4096/521*500; */
587 buf = (capacity_ma >> 24) & 0xff;
588 rk81x_bat_write(di, GASCNT_CAL_REG3, &buf, 1);
589 buf = (capacity_ma >> 16) & 0xff;
590 rk81x_bat_write(di, GASCNT_CAL_REG2, &buf, 1);
591 buf = (capacity_ma >> 8) & 0xff;
592 rk81x_bat_write(di, GASCNT_CAL_REG1, &buf, 1);
593 buf = (capacity_ma & 0xff) | 0x01;
594 rk81x_bat_write(di, GASCNT_CAL_REG0, &buf, 1);
595 rk81x_bat_read(di, GASCNT_CAL_REG0, &buf, 1);
599 if (di->chrg_status != CHARGE_FINISH || di->dod0_status == 1)
600 dev_dbg(di->dev, "update capacity :%d--remain_cap:%d\n",
601 capacity, di->remain_capacity);
606 * interface for debug: do rk81x_bat_first_pwron() without unloading battery
608 static ssize_t bat_calib_read(struct device *dev,
609 struct device_attribute *attr, char *buf)
611 struct power_supply *psy_bat = dev_get_drvdata(dev);
612 struct rk81x_battery *di = to_device_info(psy_bat);
615 val = rk81x_bat_read_bit(di, MISC_MARK_REG, OCV_CALIB_SHIFT);
617 return sprintf(buf, "%d\n", val);
620 static ssize_t bat_calib_write(struct device *dev,
621 struct device_attribute *attr,
622 const char *buf, size_t count)
626 struct power_supply *psy_bat = dev_get_drvdata(dev);
627 struct rk81x_battery *di = to_device_info(psy_bat);
629 ret = kstrtou8(buf, 0, &val);
634 rk81x_bat_set_bit(di, MISC_MARK_REG, OCV_CALIB_SHIFT);
636 rk81x_bat_clr_bit(di, MISC_MARK_REG, OCV_CALIB_SHIFT);
641 * interface for debug: force battery to over discharge
643 static ssize_t bat_test_power_read(struct device *dev,
644 struct device_attribute *attr, char *buf)
646 struct power_supply *psy_bat = dev_get_drvdata(dev);
647 struct rk81x_battery *di = to_device_info(psy_bat);
649 return sprintf(buf, "%d\n", di->fg_drv_mode);
652 static ssize_t bat_test_power_write(struct device *dev,
653 struct device_attribute *attr,
654 const char *buf, size_t count)
658 struct power_supply *psy_bat = dev_get_drvdata(dev);
659 struct rk81x_battery *di = to_device_info(psy_bat);
661 ret = kstrtou8(buf, 0, &val);
666 di->fg_drv_mode = TEST_POWER_MODE;
668 di->fg_drv_mode = FG_NORMAL_MODE;
673 static ssize_t bat_fcc_read(struct device *dev,
674 struct device_attribute *attr, char *buf)
676 struct power_supply *psy_bat = dev_get_drvdata(dev);
677 struct rk81x_battery *di = to_device_info(psy_bat);
679 return sprintf(buf, "%d\n", di->fcc);
682 static ssize_t bat_fcc_write(struct device *dev,
683 struct device_attribute *attr,
684 const char *buf, size_t count)
688 struct power_supply *psy_bat = dev_get_drvdata(dev);
689 struct rk81x_battery *di = to_device_info(psy_bat);
691 ret = kstrtou16(buf, 0, &val);
700 static ssize_t bat_dsoc_read(struct device *dev,
701 struct device_attribute *attr, char *buf)
703 struct power_supply *psy_bat = dev_get_drvdata(dev);
704 struct rk81x_battery *di = to_device_info(psy_bat);
706 return sprintf(buf, "%d\n", di->dsoc);
709 static ssize_t bat_dsoc_write(struct device *dev,
710 struct device_attribute *attr,
711 const char *buf, size_t count)
715 struct power_supply *psy_bat = dev_get_drvdata(dev);
716 struct rk81x_battery *di = to_device_info(psy_bat);
718 ret = kstrtou8(buf, 0, &val);
727 static ssize_t bat_rsoc_read(struct device *dev,
728 struct device_attribute *attr, char *buf)
730 struct power_supply *psy_bat = dev_get_drvdata(dev);
731 struct rk81x_battery *di = to_device_info(psy_bat);
733 return sprintf(buf, "%d\n", di->rsoc);
736 static ssize_t bat_rsoc_write(struct device *dev,
737 struct device_attribute *attr,
738 const char *buf, size_t count)
743 struct power_supply *psy_bat = dev_get_drvdata(dev);
744 struct rk81x_battery *di = to_device_info(psy_bat);
746 ret = kstrtou8(buf, 0, &val);
750 capacity = di->fcc * val / 100;
751 rk81x_bat_capacity_init(di, capacity);
752 rk81x_bat_capacity_init_post(di);
757 static ssize_t bat_remain_cap_read(struct device *dev,
758 struct device_attribute *attr,
761 struct power_supply *psy_bat = dev_get_drvdata(dev);
762 struct rk81x_battery *di = to_device_info(psy_bat);
764 return sprintf(buf, "%d\n", di->remain_capacity);
767 static struct device_attribute rk818_bat_attr[] = {
768 __ATTR(fcc, 0664, bat_fcc_read, bat_fcc_write),
769 __ATTR(dsoc, 0664, bat_dsoc_read, bat_dsoc_write),
770 __ATTR(rsoc, 0664, bat_rsoc_read, bat_rsoc_write),
771 __ATTR(remain_capacity, 0664, bat_remain_cap_read, NULL),
772 __ATTR(test_power, 0664, bat_test_power_read, bat_test_power_write),
773 __ATTR(calib, 0664, bat_calib_read, bat_calib_write),
777 static int rk81x_bat_gauge_enable(struct rk81x_battery *di)
782 ret = rk81x_bat_read(di, TS_CTRL_REG, &buf, 1);
784 dev_err(di->dev, "error reading TS_CTRL_REG");
789 rk81x_bat_write(di, TS_CTRL_REG, &buf, 1);
794 static void rk81x_bat_save_level(struct rk81x_battery *di, u8 save_soc)
796 rk81x_bat_write(di, UPDAT_LEVE_REG, &save_soc, 1);
799 static u8 rk81x_bat_get_level(struct rk81x_battery *di)
803 rk81x_bat_read(di, UPDAT_LEVE_REG, &soc, 1);
808 static int rk81x_bat_get_vcalib0(struct rk81x_battery *di)
814 ret = rk81x_bat_read(di, VCALIB0_REGL, &buf, 1);
816 ret = rk81x_bat_read(di, VCALIB0_REGH, &buf, 1);
819 DBG("%s voltage0 offset vale is %d\n", __func__, temp);
823 static int rk81x_bat_get_vcalib1(struct rk81x_battery *di)
829 ret = rk81x_bat_read(di, VCALIB1_REGL, &buf, 1);
831 ret = rk81x_bat_read(di, VCALIB1_REGH, &buf, 1);
834 DBG("%s voltage1 offset vale is %d\n", __func__, temp);
838 static int rk81x_bat_get_ioffset(struct rk81x_battery *di)
844 ret = rk81x_bat_read(di, IOFFSET_REGL, &buf, 1);
846 ret = rk81x_bat_read(di, IOFFSET_REGH, &buf, 1);
852 static uint16_t rk81x_bat_get_cal_offset(struct rk81x_battery *di)
858 ret = rk81x_bat_read(di, CAL_OFFSET_REGL, &buf, 1);
860 ret = rk81x_bat_read(di, CAL_OFFSET_REGH, &buf, 1);
866 static int rk81x_bat_set_cal_offset(struct rk81x_battery *di, u32 value)
872 ret = rk81x_bat_write(di, CAL_OFFSET_REGL, &buf, 1);
873 buf = (value >> 8) & 0xff;
874 ret = rk81x_bat_write(di, CAL_OFFSET_REGH, &buf, 1);
879 static void rk81x_bat_get_vol_offset(struct rk81x_battery *di)
881 int vcalib0, vcalib1;
883 vcalib0 = rk81x_bat_get_vcalib0(di);
884 vcalib1 = rk81x_bat_get_vcalib1(di);
886 di->voltage_k = (4200 - 3000) * 1000 / div((vcalib1 - vcalib0));
887 di->voltage_b = 4200 - (di->voltage_k * vcalib1) / 1000;
888 DBG("voltage_k=%d(x1000),voltage_b=%d\n", di->voltage_k, di->voltage_b);
891 static uint16_t rk81x_bat_get_ocv_vol(struct rk81x_battery *di)
896 uint16_t voltage_now = 0;
900 for (i = 0; i < 3; i++) {
901 ret = rk81x_bat_read(di, BAT_OCV_REGL, &buf, 1);
903 ret = rk81x_bat_read(di, BAT_OCV_REGH, &buf, 1);
907 dev_err(di->dev, "error read BAT_OCV_REGH");
912 if (val[0] == val[1])
917 voltage_now = di->voltage_k * temp / 1000 + di->voltage_b;
922 static int rk81x_bat_get_vol(struct rk81x_battery *di)
931 for (i = 0; i < 3; i++) {
932 ret = rk81x_bat_read(di, BAT_VOL_REGL, &buf, 1);
934 ret = rk81x_bat_read(di, BAT_VOL_REGH, &buf, 1);
938 dev_err(di->dev, "error read BAT_VOL_REGH");
943 if (val[0] == val[1])
948 vol = di->voltage_k * temp / 1000 + di->voltage_b;
953 static bool is_rk81x_bat_relax_mode(struct rk81x_battery *di)
958 ret = rk81x_bat_read(di, GGSTS, &status, 1);
960 if ((!(status & RELAX_VOL1_UPD)) || (!(status & RELAX_VOL2_UPD)))
966 static uint16_t rk81x_bat_get_relax_vol1(struct rk81x_battery *di)
970 uint16_t temp = 0, voltage_now;
972 ret = rk81x_bat_read(di, RELAX_VOL1_REGL, &buf, 1);
974 ret = rk81x_bat_read(di, RELAX_VOL1_REGH, &buf, 1);
977 voltage_now = di->voltage_k * temp / 1000 + di->voltage_b;
982 static uint16_t rk81x_bat_get_relax_vol2(struct rk81x_battery *di)
986 uint16_t temp = 0, voltage_now;
988 ret = rk81x_bat_read(di, RELAX_VOL2_REGL, &buf, 1);
990 ret = rk81x_bat_read(di, RELAX_VOL2_REGH, &buf, 1);
993 voltage_now = di->voltage_k * temp / 1000 + di->voltage_b;
998 static uint16_t rk81x_bat_get_relax_vol(struct rk81x_battery *di)
1002 uint16_t relax_vol1, relax_vol2;
1005 ret = rk81x_bat_read(di, GGSTS, &status, 1);
1006 ret = rk81x_bat_read(di, GGCON, &ggcon, 1);
1008 relax_vol1 = rk81x_bat_get_relax_vol1(di);
1009 relax_vol2 = rk81x_bat_get_relax_vol2(di);
1010 DBG("<%s>. GGSTS=0x%x, GGCON=0x%x, relax_vol1=%d, relax_vol2=%d\n",
1011 __func__, status, ggcon, relax_vol1, relax_vol2);
1013 if (is_rk81x_bat_relax_mode(di))
1014 return relax_vol1 > relax_vol2 ? relax_vol1 : relax_vol2;
1020 * Open Circuit Voltage (OCV) correction routine. This function estimates SOC,
1021 * based on the voltage.
1023 static int rk81x_bat_vol_to_capacity(struct rk81x_battery *di, int voltage)
1030 ocv_table = di->pdata->battery_ocv;
1031 ocv_size = di->pdata->ocv_size;
1032 tmp = interpolate(voltage, ocv_table, ocv_size);
1033 ocv_soc = ab_div_c(tmp, MAX_PERCENTAGE, INTERPOLATE_MAX);
1034 di->temp_nac = ab_div_c(tmp, di->fcc, INTERPOLATE_MAX);
1039 static int rk81x_bat_get_raw_adc_current(struct rk81x_battery *di)
1045 ret = rk81x_bat_read(di, BAT_CUR_AVG_REGL, &buf, 1);
1047 dev_err(di->dev, "error reading BAT_CUR_AVG_REGL");
1051 ret = rk81x_bat_read(di, BAT_CUR_AVG_REGH, &buf, 1);
1053 dev_err(di->dev, "error reading BAT_CUR_AVG_REGH");
1059 dev_err(di->dev, "error reading BAT_CUR_AVG_REGH");
1069 static void rk81x_bat_ioffset_sample_set(struct rk81x_battery *di, int time)
1073 rk81x_bat_read(di, GGCON, &ggcon, 1);
1074 ggcon &= ~(0x30); /*clear <5:4>*/
1076 rk81x_bat_write(di, GGCON, &ggcon, 1);
1080 * when charger finish signal comes, we need calibrate the current, make it
1083 static bool rk81x_bat_zero_current_calib(struct rk81x_battery *di)
1093 if ((di->chrg_status == CHARGE_FINISH) &&
1094 (BASE_TO_MIN(di->power_on_base) >= 3) &&
1095 (abs(di->current_avg) > 4)) {
1096 for (retry = 0; retry < 5; retry++) {
1097 adc_value = rk81x_bat_get_raw_adc_current(di);
1098 if (!rk81x_chrg_online(di) || abs(adc_value) > 30) {
1099 dev_warn(di->dev, "charger plugout\n");
1104 DBG("<%s>. adc_value = %d\n", __func__, adc_value);
1105 C0 = rk81x_bat_get_cal_offset(di);
1106 C1 = adc_value + C0;
1107 DBG("<%s>. C0(cal_offset) = %d, C1 = %d\n",
1109 rk81x_bat_set_cal_offset(di, C1);
1110 DBG("<%s>. new cal_offset = %d\n",
1111 __func__, rk81x_bat_get_cal_offset(di));
1113 adc_value = rk81x_bat_get_raw_adc_current(di);
1114 DBG("<%s>. adc_value = %d\n", __func__, adc_value);
1115 if (abs(adc_value) < 4) {
1116 if (rk81x_bat_get_cal_offset(di) < 0x7ff) {
1117 ioffset = rk81x_bat_get_ioffset(di);
1118 rk81x_bat_set_cal_offset(di,
1121 ioffset = rk81x_bat_get_ioffset(di);
1122 pcb_offset = C1 - ioffset;
1123 di->pcb_ioffset = pcb_offset;
1124 di->pcb_ioffset_updated = true;
1129 DBG("<%s>. update the cal_offset, C1 = %d\n"
1130 "i_offset = %d, pcb_offset = %d\n",
1131 __func__, C1, ioffset, pcb_offset);
1135 dev_dbg(di->dev, "ioffset cal failed\n");
1136 rk81x_bat_set_cal_offset(di, C0);
1139 di->pcb_ioffset_updated = false;
1146 static void rk81x_bat_set_relax_thres(struct rk81x_battery *di)
1149 int enter_thres, exit_thres;
1150 struct cell_state *cell = &di->cell;
1152 enter_thres = (cell->config->ocv->sleep_enter_current) * 1000 / 1506;
1153 exit_thres = (cell->config->ocv->sleep_exit_current) * 1000 / 1506;
1154 DBG("<%s>. sleep_enter_current = %d, sleep_exit_current = %d\n",
1155 __func__, cell->config->ocv->sleep_enter_current,
1156 cell->config->ocv->sleep_exit_current);
1158 buf = enter_thres & 0xff;
1159 rk81x_bat_write(di, RELAX_ENTRY_THRES_REGL, &buf, 1);
1160 buf = (enter_thres >> 8) & 0xff;
1161 rk81x_bat_write(di, RELAX_ENTRY_THRES_REGH, &buf, 1);
1163 buf = exit_thres & 0xff;
1164 rk81x_bat_write(di, RELAX_EXIT_THRES_REGL, &buf, 1);
1165 buf = (exit_thres >> 8) & 0xff;
1166 rk81x_bat_write(di, RELAX_EXIT_THRES_REGH, &buf, 1);
1168 /* set sample time */
1169 rk81x_bat_read(di, GGCON, &buf, 1);
1170 buf &= ~(3 << 2);/*8min*/
1171 buf &= ~0x01; /* clear bat_res calc*/
1172 rk81x_bat_write(di, GGCON, &buf, 1);
1175 static void rk81x_bat_restart_relax(struct rk81x_battery *di)
1180 rk81x_bat_read(di, GGCON, &ggcon, 1);
1182 rk81x_bat_write(di, GGCON, &ggcon, 1);
1184 rk81x_bat_read(di, GGSTS, &ggsts, 1);
1186 rk81x_bat_write(di, GGSTS, &ggsts, 1);
1189 static int rk81x_bat_get_avg_current(struct rk81x_battery *di)
1198 for (i = 0; i < 3; i++) {
1199 ret = rk81x_bat_read(di, BAT_CUR_AVG_REGL, &buf, 1);
1201 dev_err(di->dev, "error read BAT_CUR_AVG_REGL");
1206 ret = rk81x_bat_read(di, BAT_CUR_AVG_REGH, &buf, 1);
1208 dev_err(di->dev, "error read BAT_CUR_AVG_REGH");
1214 if (val[0] == val[1])
1215 current_now = val[0];
1217 current_now = val[2];
1219 if (current_now & 0x800)
1220 current_now -= 4096;
1222 temp = current_now * 1506 / 1000;/*1000*90/14/4096*500/521;*/
1227 static void rk81x_bat_set_power_supply_state(struct rk81x_battery *di,
1228 enum charger_type charger_type)
1230 di->usb_online = OFFLINE;
1231 di->ac_online = OFFLINE;
1232 di->dc_online = OFFLINE;
1234 switch (charger_type) {
1236 di->psy_status = POWER_SUPPLY_STATUS_DISCHARGING;
1239 di->usb_online = ONLINE;
1240 di->psy_status = POWER_SUPPLY_STATUS_CHARGING;
1242 case DC_CHARGER:/*treat dc as ac*/
1243 di->dc_online = ONLINE;
1245 di->ac_online = ONLINE;
1246 di->psy_status = POWER_SUPPLY_STATUS_CHARGING;
1249 di->psy_status = POWER_SUPPLY_STATUS_DISCHARGING;
1253 queue_delayed_work(di->wq, &di->chrg_term_mode_switch_work,
1254 msecs_to_jiffies(1000));
1257 /* high load: current < 0 with charger in.
1258 * System will not shutdown while dsoc=0% with charging state(ac_online),
1259 * which will cause over discharge, so oppose status before report states.
1261 static void rk81x_bat_lowpwr_check(struct rk81x_battery *di)
1264 int pwr_off_thresd = di->pdata->power_off_thresd;
1266 if (di->current_avg < 0 && di->voltage < pwr_off_thresd) {
1268 time = get_runtime_sec();
1270 if (BASE_TO_SEC(time) > (MINUTE)) {
1271 rk81x_bat_set_power_supply_state(di, NO_CHARGER);
1272 dev_info(di->dev, "low power....\n");
1275 if (di->voltage <= pwr_off_thresd - 50) {
1277 rk81x_bat_set_power_supply_state(di, NO_CHARGER);
1284 static int is_rk81x_bat_exist(struct rk81x_battery *di)
1288 rk81x_bat_read(di, SUP_STS_REG, &buf, 1);
1290 return (buf & 0x80) ? 1 : 0;
1293 static bool is_rk81x_bat_first_poweron(struct rk81x_battery *di)
1298 rk81x_bat_read(di, GGSTS, &buf, 1);
1299 DBG("%s GGSTS value is 0x%2x\n", __func__, buf);
1300 /*di->pwron_bat_con = buf;*/
1304 rk81x_bat_write(di, GGSTS, &buf, 1);
1305 rk81x_bat_read(di, GGSTS, &temp, 1);
1306 } while (temp & BAT_CON);
1313 static void rk81x_bat_flatzone_vol_init(struct rk81x_battery *di)
1320 ocv_table = di->pdata->battery_ocv;
1321 ocv_size = di->pdata->ocv_size;
1323 for (j = 0; j < 21; j++)
1327 for (i = 1; i < ocv_size-1; i++) {
1328 if (ocv_table[i+1] < ocv_table[i] + 20)
1329 temp_table[j++] = i;
1332 temp_table[j] = temp_table[j-1] + 1;
1334 di->enter_flatzone = ocv_table[i];
1337 for (i = 0; i < 20; i++) {
1338 if (temp_table[i] < temp_table[i+1])
1343 di->exit_flatzone = ocv_table[i];
1345 DBG("enter_flatzone = %d exit_flatzone = %d\n",
1346 di->enter_flatzone, di->exit_flatzone);
1349 static void rk81x_bat_power_on_save(struct rk81x_battery *di, int ocv_voltage)
1351 u8 ocv_valid, first_pwron;
1355 /*buf==1: OCV_VOL is valid*/
1356 ocv_valid = rk81x_bat_read_bit(di, MISC_MARK_REG, OCV_VALID_SHIFT);
1357 first_pwron = rk81x_bat_read_bit(di, MISC_MARK_REG, FIRST_PWRON_SHIFT);
1358 DBG("readbit: ocv_valid=%d, first_pwron=%d\n", ocv_valid, first_pwron);
1360 if (first_pwron == 1 || ocv_valid == 1) {
1361 DBG("<%s> enter.\n", __func__);
1362 ocv_soc = rk81x_bat_vol_to_capacity(di, ocv_voltage);
1363 if ((ocv_soc < 20) && (ocv_voltage > 2750)) {
1364 di->dod0_voltage = ocv_voltage;
1365 di->dod0_capacity = di->temp_nac;
1370 di->dod0_level = 100;
1371 else if (ocv_soc < 5)
1372 di->dod0_level = 95;
1373 else if (ocv_soc < 10)
1374 di->dod0_level = 90;
1376 di->dod0_level = 80;
1377 /* save_soc = di->dod0_level; */
1378 soc_level = rk81x_bat_get_level(di);
1379 if (soc_level > di->dod0_level) {
1380 di->dod0_status = 0;
1382 if (soc_level <= 80)
1384 rk81x_bat_save_level(di, soc_level);
1386 di->dod0_status = 1;
1388 di->fcc_update_sec = get_runtime_sec();
1391 dev_info(di->dev, "dod0_vol:%d, dod0_cap:%d\n"
1392 "dod0:%d, soc_level:%d: dod0_status:%d\n"
1394 di->dod0_voltage, di->dod0_capacity,
1395 ocv_soc, soc_level, di->dod0_status,
1401 static int rk81x_bat_get_rsoc(struct rk81x_battery *di)
1403 return (di->remain_capacity + di->fcc / 200) * 100 / div(di->fcc);
1406 static enum power_supply_property rk_battery_props[] = {
1407 POWER_SUPPLY_PROP_STATUS,
1408 POWER_SUPPLY_PROP_CURRENT_NOW,
1409 POWER_SUPPLY_PROP_VOLTAGE_NOW,
1410 POWER_SUPPLY_PROP_PRESENT,
1411 POWER_SUPPLY_PROP_HEALTH,
1412 POWER_SUPPLY_PROP_CAPACITY,
1415 static int rk81x_battery_get_property(struct power_supply *psy,
1416 enum power_supply_property psp,
1417 union power_supply_propval *val)
1419 struct rk81x_battery *di = to_device_info(psy);
1422 case POWER_SUPPLY_PROP_CURRENT_NOW:
1423 val->intval = di->current_avg * 1000;/*uA*/
1424 if (di->fg_drv_mode == TEST_POWER_MODE)
1425 val->intval = TEST_CURRENT * 1000;
1427 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
1428 val->intval = di->voltage * 1000;/*uV*/
1429 if (di->fg_drv_mode == TEST_POWER_MODE)
1430 val->intval = TEST_VOLTAGE * 1000;
1433 case POWER_SUPPLY_PROP_PRESENT:
1434 val->intval = is_rk81x_bat_exist(di);
1435 if (di->fg_drv_mode == TEST_POWER_MODE)
1436 val->intval = TEST_PRESET;
1439 case POWER_SUPPLY_PROP_CAPACITY:
1440 val->intval = di->dsoc;
1441 if (di->fg_drv_mode == TEST_POWER_MODE)
1442 val->intval = TEST_SOC;
1444 DBG("<%s>, report dsoc: %d\n", __func__, val->intval);
1446 case POWER_SUPPLY_PROP_HEALTH:
1447 val->intval = POWER_SUPPLY_HEALTH_GOOD;
1449 case POWER_SUPPLY_PROP_STATUS:
1450 val->intval = di->psy_status;
1451 if (di->fg_drv_mode == TEST_POWER_MODE)
1452 val->intval = TEST_STATUS;
1462 static enum power_supply_property rk_battery_ac_props[] = {
1463 POWER_SUPPLY_PROP_ONLINE,
1466 static enum power_supply_property rk_battery_usb_props[] = {
1467 POWER_SUPPLY_PROP_ONLINE,
1470 static int rk81x_battery_ac_get_property(struct power_supply *psy,
1471 enum power_supply_property psp,
1472 union power_supply_propval *val)
1475 struct rk81x_battery *di = to_ac_device_info(psy);
1478 case POWER_SUPPLY_PROP_ONLINE:
1479 if (rk81x_chrg_online(di))
1480 rk81x_bat_lowpwr_check(di);
1481 val->intval = di->ac_online; /*discharging*/
1482 if (di->fg_drv_mode == TEST_POWER_MODE)
1483 val->intval = TEST_AC_ONLINE;
1493 static int rk81x_battery_usb_get_property(struct power_supply *psy,
1494 enum power_supply_property psp,
1495 union power_supply_propval *val)
1498 struct rk81x_battery *di = to_usb_device_info(psy);
1501 case POWER_SUPPLY_PROP_ONLINE:
1502 if (rk81x_chrg_online(di))
1503 rk81x_bat_lowpwr_check(di);
1504 val->intval = di->usb_online;
1505 if (di->fg_drv_mode == TEST_POWER_MODE)
1506 val->intval = TEST_USB_ONLINE;
1516 static int rk81x_bat_power_supply_init(struct rk81x_battery *di)
1520 di->bat.name = "BATTERY";
1521 di->bat.type = POWER_SUPPLY_TYPE_BATTERY;
1522 di->bat.properties = rk_battery_props;
1523 di->bat.num_properties = ARRAY_SIZE(rk_battery_props);
1524 di->bat.get_property = rk81x_battery_get_property;
1527 di->ac.type = POWER_SUPPLY_TYPE_MAINS;
1528 di->ac.properties = rk_battery_ac_props;
1529 di->ac.num_properties = ARRAY_SIZE(rk_battery_ac_props);
1530 di->ac.get_property = rk81x_battery_ac_get_property;
1532 di->usb.name = "USB";
1533 di->usb.type = POWER_SUPPLY_TYPE_USB;
1534 di->usb.properties = rk_battery_usb_props;
1535 di->usb.num_properties = ARRAY_SIZE(rk_battery_usb_props);
1536 di->usb.get_property = rk81x_battery_usb_get_property;
1538 ret = power_supply_register(di->dev, &di->bat);
1540 dev_err(di->dev, "failed to register main battery\n");
1543 ret = power_supply_register(di->dev, &di->usb);
1545 dev_err(di->dev, "failed to register usb power supply\n");
1548 ret = power_supply_register(di->dev, &di->ac);
1550 dev_err(di->dev, "failed to register ac power supply\n");
1557 power_supply_unregister(&di->ac);
1559 power_supply_unregister(&di->usb);
1561 power_supply_unregister(&di->bat);
1566 static void rk81x_bat_save_remain_capacity(struct rk81x_battery *di,
1570 static u32 capacity_ma;
1572 if (capacity >= di->qmax)
1573 capacity = di->qmax;
1578 if (capacity_ma == capacity)
1581 capacity_ma = capacity;
1583 buf = (capacity_ma >> 24) & 0xff;
1584 rk81x_bat_write(di, REMAIN_CAP_REG3, &buf, 1);
1585 buf = (capacity_ma >> 16) & 0xff;
1586 rk81x_bat_write(di, REMAIN_CAP_REG2, &buf, 1);
1587 buf = (capacity_ma >> 8) & 0xff;
1588 rk81x_bat_write(di, REMAIN_CAP_REG1, &buf, 1);
1589 buf = (capacity_ma & 0xff) | 0x01;
1590 rk81x_bat_write(di, REMAIN_CAP_REG0, &buf, 1);
1593 static int rk81x_bat_get_remain_capacity(struct rk81x_battery *di)
1601 for (i = 0; i < 3; i++) {
1602 ret = rk81x_bat_read(di, REMAIN_CAP_REG3, &buf, 1);
1604 ret = rk81x_bat_read(di, REMAIN_CAP_REG2, &buf, 1);
1605 val[i] |= buf << 16;
1606 ret = rk81x_bat_read(di, REMAIN_CAP_REG1, &buf, 1);
1608 ret = rk81x_bat_read(di, REMAIN_CAP_REG0, &buf, 1);
1612 if (val[0] == val[1])
1620 static void rk81x_bat_save_fcc(struct rk81x_battery *di, u32 capacity)
1625 capacity_ma = capacity;
1626 buf = (capacity_ma >> 24) & 0xff;
1627 rk81x_bat_write(di, NEW_FCC_REG3, &buf, 1);
1628 buf = (capacity_ma >> 16) & 0xff;
1629 rk81x_bat_write(di, NEW_FCC_REG2, &buf, 1);
1630 buf = (capacity_ma >> 8) & 0xff;
1631 rk81x_bat_write(di, NEW_FCC_REG1, &buf, 1);
1632 buf = (capacity_ma & 0xff) | 0x01;
1633 rk81x_bat_write(di, NEW_FCC_REG0, &buf, 1);
1635 dev_info(di->dev, "update fcc : %d\n", capacity);
1638 static int rk81x_bat_get_fcc(struct rk81x_battery *di)
1643 rk81x_bat_read(di, NEW_FCC_REG3, &buf, 1);
1644 capacity = buf << 24;
1645 rk81x_bat_read(di, NEW_FCC_REG2, &buf, 1);
1646 capacity |= buf << 16;
1647 rk81x_bat_read(di, NEW_FCC_REG1, &buf, 1);
1648 capacity |= buf << 8;
1649 rk81x_bat_read(di, NEW_FCC_REG0, &buf, 1);
1652 if (capacity < MIN_FCC) {
1653 dev_warn(di->dev, "invalid fcc(0x%x), use design capacity",
1655 capacity = di->design_capacity;
1656 rk81x_bat_save_fcc(di, capacity);
1657 } else if (capacity > di->qmax) {
1658 dev_warn(di->dev, "invalid fcc(0x%x), use qmax", capacity);
1659 capacity = di->qmax;
1660 rk81x_bat_save_fcc(di, capacity);
1666 static int rk81x_bat_get_realtime_capacity(struct rk81x_battery *di)
1675 for (i = 0; i < 3; i++) {
1676 ret = rk81x_bat_read(di, GASCNT3, &buf, 1);
1678 ret = rk81x_bat_read(di, GASCNT2, &buf, 1);
1679 val[i] |= buf << 16;
1680 ret = rk81x_bat_read(di, GASCNT1, &buf, 1);
1682 ret = rk81x_bat_read(di, GASCNT0, &buf, 1);
1685 if (val[0] == val[1])
1690 capacity = temp / 2390;/* 4096*900/14/36*500/521; */
1695 static int rk81x_bat_save_dsoc(struct rk81x_battery *di, u8 save_soc)
1699 if (last_soc != save_soc) {
1700 rk81x_bat_write(di, SOC_REG, &save_soc, 1);
1701 last_soc = save_soc;
1707 static int rk81x_bat_save_reboot_cnt(struct rk81x_battery *di, u8 save_cnt)
1712 rk81x_bat_write(di, REBOOT_CNT_REG, &cnt, 1);
1716 static void rk81x_bat_set_current(struct rk81x_battery *di, int charge_current)
1720 rk81x_bat_read(di, USB_CTRL_REG, &usb_ctrl_reg, 1);
1721 usb_ctrl_reg &= (~0x0f);/* (VLIM_4400MV | ILIM_1200MA) |(0x01 << 7); */
1722 usb_ctrl_reg |= (charge_current | CHRG_CT_EN);
1723 rk81x_bat_write(di, USB_CTRL_REG, &usb_ctrl_reg, 1);
1726 static void rk81x_bat_set_chrg_current(struct rk81x_battery *di,
1727 enum charger_type charger_type)
1729 switch (charger_type) {
1732 rk81x_bat_set_current(di, ILIM_450MA);
1736 rk81x_bat_set_current(di, di->chrg_i_lmt);
1739 rk81x_bat_set_current(di, ILIM_450MA);
1743 #if defined(CONFIG_ARCH_ROCKCHIP)
1745 static void rk81x_bat_set_charger_param(struct rk81x_battery *di,
1746 enum charger_type charger_type)
1748 rk81x_bat_set_chrg_current(di, charger_type);
1749 rk81x_bat_set_power_supply_state(di, charger_type);
1751 switch (charger_type) {
1753 power_supply_changed(&di->bat);
1757 power_supply_changed(&di->usb);
1760 power_supply_changed(&di->ac);
1767 static void rk81x_bat_set_otg_state(struct rk81x_battery *di, int state)
1770 case USB_OTG_POWER_ON:
1771 rk81x_bat_set_bit(di, NT_STS_MSK_REG2, PLUG_IN_INT);
1772 rk81x_bat_set_bit(di, NT_STS_MSK_REG2, PLUG_OUT_INT);
1773 rk818_set_bits(di->rk818, DCDC_EN_REG, OTG_EN_MASK, OTG_EN);
1775 case USB_OTG_POWER_OFF:
1776 rk81x_bat_clr_bit(di, NT_STS_MSK_REG2, PLUG_IN_INT);
1777 rk81x_bat_clr_bit(di, NT_STS_MSK_REG2, PLUG_OUT_INT);
1778 rk818_set_bits(di->rk818, DCDC_EN_REG, OTG_EN_MASK, OTG_DIS);
1785 static enum charger_type rk81x_bat_get_dc_state(struct rk81x_battery *di)
1788 enum charger_type charger_type = NO_CHARGER;
1790 if (di->fg_drv_mode == TEST_POWER_MODE) {
1791 charger_type = DC_CHARGER;
1798 if (!gpio_is_valid(di->dc_det_pin))
1801 ret = gpio_request(di->dc_det_pin, "rk818_dc_det");
1803 pr_err("Failed to request gpio %d with ret:""%d\n",
1804 di->dc_det_pin, ret);
1808 gpio_direction_input(di->dc_det_pin);
1809 ret = gpio_get_value(di->dc_det_pin);
1810 if (ret == di->dc_det_level)
1811 charger_type = DC_CHARGER;
1813 charger_type = NO_CHARGER;
1814 gpio_free(di->dc_det_pin);
1816 return charger_type;
1819 static void rk81x_battery_dc_delay_work(struct work_struct *work)
1821 enum charger_type charger_type;
1822 struct rk81x_battery *di = container_of(work,
1823 struct rk81x_battery, dc_det_check_work.work);
1825 charger_type = rk81x_bat_get_dc_state(di);
1827 if (charger_type == DC_CHARGER) {
1828 rk81x_bat_set_charger_param(di, DC_CHARGER);
1829 if (power_dc2otg && di->otg_online)
1830 rk81x_bat_set_otg_state(di, USB_OTG_POWER_OFF);
1832 if (di->otg_online) {
1833 rk81x_bat_set_otg_state(di, USB_OTG_POWER_ON);
1834 rk81x_bat_set_charger_param(di, NO_CHARGER);
1836 queue_delayed_work(di->wq,
1837 &di->ac_usb_check_work,
1838 msecs_to_jiffies(10));
1843 static void rk81x_battery_acusb_delay_work(struct work_struct *work)
1846 int gadget_flag, usb_id;
1847 struct rk81x_battery *di = container_of(work,
1848 struct rk81x_battery, ac_usb_check_work.work);
1850 rk81x_bat_read(di, VB_MOD_REG, &buf, 1);
1851 usb_id = dwc_otg_check_dpdm(0);
1854 if ((buf & PLUG_IN_STS) != 0)
1855 rk81x_bat_set_charger_param(di, DC_CHARGER);
1857 rk81x_bat_set_charger_param(di, NO_CHARGER);
1861 rk81x_bat_set_charger_param(di, USB_CHARGER);
1864 rk81x_bat_set_charger_param(di, AC_CHARGER);
1869 /*check unstanderd charger*/
1870 if (usb_id == 1 || usb_id == 3) {
1871 gadget_flag = get_gadget_connect_flag();
1872 if (0 == gadget_flag) {
1874 if (di->check_count >= 5) {
1875 di->check_count = 0;
1876 rk81x_bat_set_charger_param(di, AC_CHARGER);
1878 queue_delayed_work(di->wq,
1879 &di->ac_usb_check_work,
1880 msecs_to_jiffies(1000));
1882 } else {/*confirm: USB_CHARGER*/
1883 di->check_count = 0;
1889 #if defined(CONFIG_X86_INTEL_SOFIA)
1890 static int rk81x_get_chrg_type_by_usb_phy(struct rk81x_battery *di, int ma)
1892 enum charger_type charger_type;
1895 charger_type = AC_CHARGER;
1897 charger_type = USB_CHARGER;
1899 charger_type = NO_CHARGER;
1903 dev_info(di->dev, "limit current:%d\n", ma);
1905 return charger_type;
1908 static void rk81x_battery_usb_notifier_delayed_work(struct work_struct *work)
1910 struct rk81x_battery *di;
1911 enum charger_type type;
1913 di = container_of(work, struct rk81x_battery, usb_phy_delay_work.work);
1914 type = rk81x_get_chrg_type_by_usb_phy(di, di->ma);
1916 rk81x_bat_set_chrg_current(di, type);
1917 power_supply_changed(&di->usb);
1920 static int rk81x_battery_usb_notifier(struct notifier_block *nb,
1921 unsigned long event, void *data)
1923 struct rk81x_battery *di;
1924 struct power_supply_cable_props *cable_props;
1925 enum charger_type type;
1927 di = container_of(nb, struct rk81x_battery, usb_nb);
1933 case USB_EVENT_CHARGER:
1934 cable_props = (struct power_supply_cable_props *)data;
1935 type = rk81x_get_chrg_type_by_usb_phy(di, cable_props->ma);
1936 rk81x_bat_set_power_supply_state(di, type);
1937 queue_delayed_work(di->wq, &di->usb_phy_delay_work,
1938 msecs_to_jiffies(50));
1949 static int rk81x_battery_fb_notifier(struct notifier_block *nb,
1950 unsigned long event, void *data)
1952 struct rk81x_battery *di;
1953 struct fb_event *evdata = data;
1956 di = container_of(nb, struct rk81x_battery, fb_nb);
1958 if (event != FB_EVENT_BLANK && event != FB_EVENT_CONBLANK)
1961 blank = *(int *)evdata->data;
1963 if (di->fb_blank != blank)
1964 di->fb_blank = blank;
1968 if (blank == FB_BLANK_UNBLANK)
1969 di->early_resume = 1;
1974 static int rk81x_battery_register_fb_notify(struct rk81x_battery *di)
1976 memset(&di->fb_nb, 0, sizeof(di->fb_nb));
1977 di->fb_nb.notifier_call = rk81x_battery_fb_notifier;
1979 return fb_register_client(&di->fb_nb);
1983 * it is first time for battery to be weld, init by ocv table
1985 static void rk81x_bat_first_pwron(struct rk81x_battery *di)
1987 rk81x_bat_save_fcc(di, di->design_capacity);
1988 di->fcc = rk81x_bat_get_fcc(di);
1990 di->rsoc = rk81x_bat_vol_to_capacity(di, di->voltage_ocv);
1991 di->dsoc = di->rsoc;
1992 di->nac = di->temp_nac;
1994 rk81x_bat_set_bit(di, MISC_MARK_REG, OCV_VALID_SHIFT);
1995 rk81x_bat_set_bit(di, MISC_MARK_REG, FIRST_PWRON_SHIFT);/*save*/
1996 DBG("<%s>.this is first poweron: OCV-SOC:%d, OCV-CAP:%d, FCC:%d\n",
1997 __func__, di->dsoc, di->nac, di->fcc);
2000 static int rk81x_bat_get_calib_vol(struct rk81x_battery *di)
2005 int relax_vol = di->relax_voltage;
2006 int ocv_vol = di->voltage_ocv;
2008 init_cur = rk81x_bat_get_avg_current(di);
2009 diff = (di->bat_res + di->pdata->chrg_diff_vol) * init_cur;
2011 est_vol = di->voltage - diff;
2013 if (di->loader_charged) {
2014 calib_vol = est_vol;
2018 if (di->pwroff_min > 8) {
2019 if (abs(relax_vol - ocv_vol) < 100) {
2020 calib_vol = ocv_vol;
2022 if (abs(relax_vol - est_vol) > abs(ocv_vol - est_vol))
2023 calib_vol = ocv_vol;
2025 calib_vol = relax_vol;
2027 } else if (di->pwroff_min > 2) {
2028 calib_vol = ocv_vol;
2033 dev_info(di->dev, "c=%d, v=%d, relax=%d, ocv=%d, est=%d, calib=%d\n",
2034 init_cur, di->voltage, relax_vol, ocv_vol, est_vol, calib_vol);
2040 * it is not first time for battery to be weld, init by last record info
2042 static void rk81x_bat_not_first_pwron(struct rk81x_battery *di)
2046 int remain_capacity;
2048 int calib_vol, calib_soc, calib_capacity;
2050 rk81x_bat_clr_bit(di, MISC_MARK_REG, FIRST_PWRON_SHIFT);
2051 rk81x_bat_read(di, SOC_REG, &pwron_soc, 1);
2052 init_soc = pwron_soc;
2053 remain_capacity = rk81x_bat_get_remain_capacity(di);
2055 /* check if support uboot charge,
2056 * if support, uboot charge driver should have done init work,
2057 * so here we should skip init work
2059 #if defined(CONFIG_ARCH_ROCKCHIP)
2060 if (di->loader_charged) {
2061 dev_info(di->dev, "loader charged\n");
2065 calib_vol = rk81x_bat_get_calib_vol(di);
2066 if (calib_vol > 0) {
2067 calib_soc = rk81x_bat_vol_to_capacity(di, calib_vol);
2068 calib_capacity = di->temp_nac;
2070 if (abs(calib_soc - init_soc) >= 70 || di->loader_charged) {
2071 init_soc = calib_soc;
2072 remain_capacity = calib_capacity;
2074 dev_info(di->dev, "calib_vol %d, init soc %d, remain_cap %d\n",
2075 calib_vol, init_soc, remain_capacity);
2078 ocv_soc = rk81x_bat_vol_to_capacity(di, di->voltage_ocv);
2079 DBG("<%s>, Not first pwron, real_remain_cap = %d, ocv-remain_cp=%d\n",
2080 __func__, remain_capacity, di->temp_nac);
2082 if (di->pwroff_min > 0) {
2083 if (di->pwroff_min > 30) {
2084 rk81x_bat_set_bit(di, MISC_MARK_REG, OCV_VALID_SHIFT);
2086 remain_capacity = di->temp_nac;
2087 DBG("<%s>pwroff > 30 minute, remain_cap = %d\n",
2088 __func__, remain_capacity);
2090 } else if ((di->pwroff_min > 5) &&
2091 (abs(ocv_soc - init_soc) >= 10)) {
2092 if (remain_capacity >= di->temp_nac * 120/100)
2093 remain_capacity = di->temp_nac * 110/100;
2094 else if (remain_capacity < di->temp_nac * 8/10)
2095 remain_capacity = di->temp_nac * 9/10;
2096 DBG("<%s> pwroff > 5 minute, remain_cap = %d\n",
2097 __func__, remain_capacity);
2100 rk81x_bat_clr_bit(di, MISC_MARK_REG, OCV_VALID_SHIFT);
2103 di->dsoc = init_soc;
2104 di->nac = remain_capacity;
2107 dev_info(di->dev, "reg soc=%d, init soc = %d, init cap=%d\n",
2108 pwron_soc, di->dsoc, di->nac);
2111 static u8 rk81x_bat_get_pwroff_min(struct rk81x_battery *di)
2113 u8 curr_pwroff_min, last_pwroff_min;
2115 rk81x_bat_read(di, NON_ACT_TIMER_CNT_REG,
2116 &curr_pwroff_min, 1);
2117 rk81x_bat_read(di, NON_ACT_TIMER_CNT_REG_SAVE,
2118 &last_pwroff_min, 1);
2120 rk81x_bat_write(di, NON_ACT_TIMER_CNT_REG_SAVE,
2121 &curr_pwroff_min, 1);
2123 return (curr_pwroff_min != last_pwroff_min) ? curr_pwroff_min : 0;
2126 static int rk81x_bat_rsoc_init(struct rk81x_battery *di)
2128 u8 calib_en;/*debug*/
2130 di->voltage = rk81x_bat_get_vol(di);
2131 di->voltage_ocv = rk81x_bat_get_ocv_vol(di);
2132 di->pwroff_min = rk81x_bat_get_pwroff_min(di);
2133 di->relax_voltage = rk81x_bat_get_relax_vol(di);
2134 di->current_avg = rk81x_bat_get_avg_current(di);
2136 dev_info(di->dev, "v=%d, ov=%d, rv=%d, c=%d, pwroff_min=%d\n",
2137 di->voltage, di->voltage_ocv, di->relax_voltage,
2138 di->current_avg, di->pwroff_min);
2140 calib_en = rk81x_bat_read_bit(di, MISC_MARK_REG, OCV_CALIB_SHIFT);
2141 DBG("readbit: calib_en=%d\n", calib_en);
2142 if (is_rk81x_bat_first_poweron(di) ||
2143 ((di->pwroff_min >= 30) && (calib_en == 1))) {
2144 rk81x_bat_first_pwron(di);
2145 rk81x_bat_clr_bit(di, MISC_MARK_REG, OCV_CALIB_SHIFT);
2148 rk81x_bat_not_first_pwron(di);
2154 static u8 rk81x_bat_get_chrg_status(struct rk81x_battery *di)
2159 rk81x_bat_read(di, SUP_STS_REG, &status, 1);
2164 DBG(" CHARGE-OFF ...\n");
2168 DBG(" DEAD CHARGE ...\n");
2170 case TRICKLE_CHARGE:
2172 DBG(" TRICKLE CHARGE ...\n ");
2176 DBG(" CC or CV ...\n");
2179 ret = CHARGE_FINISH;
2180 DBG(" CHARGE FINISH ...\n");
2184 DBG(" USB OVER VOL ...\n");
2188 DBG(" BAT TMP ERROR ...\n");
2192 DBG(" TIMER ERROR ...\n");
2196 DBG(" USB EXIST ...\n");
2200 DBG(" USB EFF...\n");
2209 static void rk81x_bat_match_param(struct rk81x_battery *di, int chrg_vol,
2210 int chrg_ilim, int chrg_cur)
2214 di->chrg_v_lmt = DEF_CHRG_VOL;
2215 di->chrg_i_lmt = DEF_CHRG_CURR_LMT;
2216 di->chrg_i_cur = DEF_CHRG_CURR_SEL;
2218 for (i = 0; i < ARRAY_SIZE(CHRG_V_LMT); i++) {
2219 if (chrg_vol < CHRG_V_LMT[i])
2222 di->chrg_v_lmt = (i << CHRG_VOL_SHIFT);
2225 for (i = 0; i < ARRAY_SIZE(CHRG_I_LMT); i++) {
2226 if (chrg_ilim < CHRG_I_LMT[i])
2229 di->chrg_i_lmt = (i << CHRG_ILIM_SHIFT);
2232 for (i = 0; i < ARRAY_SIZE(CHRG_I_CUR); i++) {
2233 if (chrg_cur < CHRG_I_CUR[i])
2236 di->chrg_i_cur = (i << CHRG_ICUR_SHIFT);
2238 DBG("<%s>. vol = 0x%x, i_lim = 0x%x, cur=0x%x\n",
2239 __func__, di->chrg_v_lmt, di->chrg_i_lmt, di->chrg_i_cur);
2242 static u8 rk81x_bat_select_finish_ma(int fcc)
2244 u8 ma = FINISH_150MA;
2249 else if (fcc >= 4000)
2252 else if (fcc >= 3000)
2262 * there is a timer inside rk81x to calc how long the battery is in charging
2263 * state. rk81x will close PowerPath inside IC when timer reach, which will
2264 * stop the charging work. we have to reset the corresponding bits to restart
2265 * the timer to avoid that case.
2267 static void rk81x_bat_init_chrg_timer(struct rk81x_battery *di)
2271 rk81x_bat_read(di, CHRG_CTRL_REG3, &buf, 1);
2272 buf &= ~CHRG_TIMER_CCCV_EN;
2273 rk81x_bat_write(di, CHRG_CTRL_REG3, &buf, 1);
2275 rk81x_bat_read(di, CHRG_CTRL_REG3, &buf, 1);
2276 buf |= CHRG_TIMER_CCCV_EN;
2277 rk81x_bat_write(di, CHRG_CTRL_REG3, &buf, 1);
2278 dev_info(di->dev, "reset cccv charge timer\n");
2282 static void rk81x_bat_charger_init(struct rk81x_battery *di)
2284 u8 chrg_ctrl_reg1, usb_ctrl_reg, chrg_ctrl_reg2, chrg_ctrl_reg3;
2285 u8 sup_sts_reg, thremal_reg, ggcon;
2286 int chrg_vol, chrg_cur, chrg_ilim;
2289 chrg_vol = di->pdata->max_charger_voltagemV;
2290 chrg_cur = di->pdata->max_charger_currentmA;
2291 chrg_ilim = di->pdata->max_charger_ilimitmA;
2293 rk81x_bat_match_param(di, chrg_vol, chrg_ilim, chrg_cur);
2294 finish_ma = rk81x_bat_select_finish_ma(di->fcc);
2296 /*rk81x_bat_init_chrg_timer(di);*/
2298 rk81x_bat_read(di, THERMAL_REG, &thremal_reg, 1);
2299 rk81x_bat_read(di, USB_CTRL_REG, &usb_ctrl_reg, 1);
2300 rk81x_bat_read(di, CHRG_CTRL_REG1, &chrg_ctrl_reg1, 1);
2301 rk81x_bat_read(di, CHRG_CTRL_REG2, &chrg_ctrl_reg2, 1);
2302 rk81x_bat_read(di, SUP_STS_REG, &sup_sts_reg, 1);
2303 rk81x_bat_read(di, CHRG_CTRL_REG3, &chrg_ctrl_reg3, 1);
2304 rk81x_bat_read(di, GGCON, &ggcon, 1);
2306 usb_ctrl_reg &= (~0x0f);
2308 if (rk81x_bat_support_adp_type(HW_ADP_TYPE_USB))
2309 usb_ctrl_reg |= (CHRG_CT_EN | ILIM_450MA);/*en temp feed back*/
2311 usb_ctrl_reg |= (CHRG_CT_EN | di->chrg_i_lmt);
2313 if (di->fg_drv_mode == TEST_POWER_MODE)
2314 usb_ctrl_reg |= (CHRG_CT_EN | di->chrg_i_lmt);
2316 chrg_ctrl_reg1 &= (0x00);
2317 chrg_ctrl_reg1 |= (CHRG_EN) | (di->chrg_v_lmt | di->chrg_i_cur);
2319 chrg_ctrl_reg3 |= CHRG_TERM_DIG_SIGNAL;/* digital finish mode*/
2320 chrg_ctrl_reg3 &= ~CHRG_TIMER_CCCV_EN;/*disable*/
2322 chrg_ctrl_reg2 &= ~(0xc7);
2323 chrg_ctrl_reg2 |= finish_ma | CHG_CCCV_6HOUR;
2325 sup_sts_reg &= ~(0x01 << 3);
2326 sup_sts_reg |= (0x01 << 2);
2328 thremal_reg &= (~0x0c);
2329 thremal_reg |= TEMP_105C;/*temp feed back: 105c*/
2330 ggcon |= ADC_CURRENT_MODE;
2332 rk81x_bat_write(di, THERMAL_REG, &thremal_reg, 1);
2333 rk81x_bat_write(di, CHRG_CTRL_REG3, &chrg_ctrl_reg3, 1);
2334 /*don't touch charge setting when boot int loader charge mode*/
2335 if (!di->loader_charged)
2336 rk81x_bat_write(di, USB_CTRL_REG, &usb_ctrl_reg, 1);
2337 rk81x_bat_write(di, CHRG_CTRL_REG1, &chrg_ctrl_reg1, 1);
2338 rk81x_bat_write(di, CHRG_CTRL_REG2, &chrg_ctrl_reg2, 1);
2339 rk81x_bat_write(di, SUP_STS_REG, &sup_sts_reg, 1);
2340 rk81x_bat_write(di, GGCON, &ggcon, 1);
2343 static void rk81x_bat_fg_init(struct rk81x_battery *di)
2350 rk81x_bat_write(di, ADC_CTRL_REG, &val, 1);
2352 rk81x_bat_gauge_enable(di);
2353 /* get the volatege offset */
2354 rk81x_bat_get_vol_offset(di);
2355 rk81x_bat_charger_init(di);
2356 rk81x_bat_set_relax_thres(di);
2358 /* get the current offset , the value write to the CAL_OFFSET */
2359 di->current_offset = rk81x_bat_get_ioffset(di);
2360 rk81x_bat_read(di, PCB_IOFFSET_REG, &pcb_offset, 1);
2361 DBG("<%s>. pcb_offset = 0x%x, io_offset = 0x%x\n",
2362 __func__, pcb_offset, di->current_offset);
2364 pcb_offset = DEF_PCB_OFFSET;
2365 cal_offset = pcb_offset + di->current_offset;
2366 if (cal_offset < 0x7ff || cal_offset > 0x8ff)
2367 cal_offset = DEF_CAL_OFFSET;
2368 rk81x_bat_set_cal_offset(di, cal_offset);
2369 /* set sample time for cal_offset interval*/
2370 rk81x_bat_ioffset_sample_set(di, SAMP_TIME_8MIN);
2372 rk81x_bat_rsoc_init(di);
2373 rk81x_bat_capacity_init(di, di->nac);
2374 rk81x_bat_capacity_init_post(di);
2376 di->remain_capacity = rk81x_bat_get_realtime_capacity(di);
2377 di->current_avg = rk81x_bat_get_avg_current(di);
2379 rk81x_bat_restart_relax(di);
2380 rk81x_bat_power_on_save(di, di->voltage_ocv);
2382 rk81x_bat_write(di, OCV_VOL_VALID_REG, &val, 1);
2384 rk81x_dbg_dmp_gauge_regs(di);
2385 rk81x_dbg_dmp_charger_regs(di);
2388 "nac = %d , remain_capacity = %d\n"
2389 "OCV_voltage = %d, voltage = %d\n"
2390 "SOC = %d, fcc = %d\n, current=%d\n"
2391 "cal_offset = 0x%x\n",
2393 di->nac, di->remain_capacity,
2394 di->voltage_ocv, di->voltage,
2395 di->dsoc, di->fcc, di->current_avg,
2399 static void rk81x_bat_zero_calc_linek(struct rk81x_battery *di)
2401 int dead_voltage, ocv_voltage;
2402 int voltage, voltage_old, voltage_now;
2407 int ocv_soc, dead_soc;
2408 int power_off_thresd = di->pdata->power_off_thresd;
2411 voltage_old = rk81x_bat_get_vol(di);
2413 voltage_now = rk81x_bat_get_vol(di);
2415 } while ((voltage_old == voltage_now) && (count_num < 11));
2416 DBG("<%s>. current calc count=%d\n", __func__, count_num);
2419 for (i = 0; i < 10; i++) {
2420 voltage += rk81x_bat_get_vol(di);
2425 currentnow = rk81x_bat_get_avg_current(di);
2427 /* 50 mo power-path mos */
2428 dead_voltage = power_off_thresd - currentnow *
2429 (di->bat_res + DEF_PWRPATH_RES) / 1000;
2431 ocv_voltage = voltage - (currentnow * di->bat_res) / 1000;
2432 DBG("ZERO0: dead_voltage(shtd) = %d, ocv_voltage(now) = %d\n",
2433 dead_voltage, ocv_voltage);
2435 dead_soc = rk81x_bat_vol_to_capacity(di, dead_voltage);
2436 q_dead = di->temp_nac;
2437 DBG("ZERO0: dead_voltage_soc = %d, q_dead = %d\n",
2440 ocv_soc = rk81x_bat_vol_to_capacity(di, ocv_voltage);
2441 q_ocv = di->temp_nac;
2442 DBG("ZERO0: ocv_voltage_soc = %d, q_ocv = %d\n",
2445 rsoc = ocv_soc - dead_soc;
2446 if ((di->dsoc == 1) && (rsoc > 0)) {/*discharge*/
2448 } else if (rsoc > 0) {
2449 di->line_k = (di->display_soc + rsoc / 2) / div(rsoc);
2452 di->display_soc = di->dsoc * 1000;
2455 di->zero_old_remain_cap = di->remain_capacity;
2457 DBG("ZERO-new: new-line_k=%d, dsoc=%d, X0soc=%d\n"
2458 "ZERO-new: di->display_soc=%d, old_remain_cap=%d\n\n",
2459 di->line_k, di->dsoc, rsoc,
2460 di->display_soc, di->zero_old_remain_cap);
2463 static void rk81x_bat_zero_algorithm(struct rk81x_battery *di)
2465 int delta_cap, delta_soc;
2468 di->zero_timeout_cnt++;
2469 delta_cap = di->zero_old_remain_cap - di->remain_capacity;
2470 delta_soc = di->line_k * (delta_cap * 100) / div(di->fcc);
2472 DBG("ZERO1: line_k=%d, display_soc(Y0)=%d, dsoc=%d, rsoc=%d\n"
2473 "ZERO1: delta_soc(X0)=%d, delta_cap=%d, old_remain_cap = %d\n"
2474 "ZERO1: timeout_cnt=%d\n\n",
2475 di->line_k, di->display_soc, di->dsoc, di->rsoc,
2476 delta_soc, delta_cap, di->zero_old_remain_cap,
2477 di->zero_timeout_cnt);
2479 if ((delta_soc >= MIN_ZERO_ACCURACY) ||
2480 (di->zero_timeout_cnt > 500)) {
2481 DBG("ZERO1:--------- enter calc -----------\n");
2482 di->zero_timeout_cnt = 0;
2483 di->display_soc -= delta_soc;
2484 tmp_dsoc = (di->display_soc + MIN_ROUND_ACCURACY) / 1000;
2485 di->dsoc = tmp_dsoc;
2486 /* need to be init, otherwise when switch between discharge and
2487 * charge display_soc will be init as: dsoc * 1000
2489 di->last_zero_mode_dsoc = tmp_dsoc;
2490 DBG("ZERO1: display_soc(Y0)=%d, dsoc=%d, rsoc=%d, tmp_soc=%d",
2491 di->display_soc, di->dsoc, di->rsoc, tmp_dsoc);
2493 rk81x_bat_zero_calc_linek(di);
2497 static int rk81x_bat_est_ocv_vol(struct rk81x_battery *di)
2499 return (di->voltage -
2500 (di->bat_res * di->current_avg) / 1000);
2503 static int rk81x_bat_est_ocv_soc(struct rk81x_battery *di)
2505 int ocv_soc, ocv_voltage;
2507 ocv_voltage = rk81x_bat_est_ocv_vol(di);
2508 ocv_soc = rk81x_bat_vol_to_capacity(di, ocv_voltage);
2513 /* we will estimate a ocv voltage to get a ocv soc.
2514 * if there is a big offset between ocv_soc and rsoc,
2515 * we will decide whether we should reinit capacity or not
2517 static void rk81x_bat_rsoc_dischrg_check(struct rk81x_battery *di)
2519 int ocv_soc = di->est_ocv_soc;
2520 int ocv_volt = di->est_ocv_vol;
2521 int rsoc = rk81x_bat_get_rsoc(di);
2522 int max_volt = di->pdata->max_charger_voltagemV;
2524 if (ocv_volt > max_volt)
2527 if (di->plug_out_min >= RSOC_CALIB_DISCHRGR_TIME) {
2528 if ((ocv_soc-rsoc >= RSOC_DISCHRG_ERR_LOWER) ||
2530 (rsoc-ocv_soc >= RSOC_DISCHRG_ERR_UPPER)) {
2532 di->err_soc_sum += ocv_soc;
2536 DBG("<%s>. rsoc err_chck_cnt = %d, err_soc_sum = %d\n",
2537 __func__, di->err_chck_cnt, di->err_soc_sum);
2539 if (di->err_chck_cnt >= RSOC_ERR_CHCK_CNT) {
2540 ocv_soc = di->err_soc_sum / RSOC_ERR_CHCK_CNT;
2541 if (rsoc-ocv_soc >= RSOC_DISCHRG_ERR_UPPER)
2542 ocv_soc += RSOC_COMPS;
2544 di->temp_nac = ocv_soc * di->fcc / 100;
2545 rk81x_bat_capacity_init(di, di->temp_nac);
2546 rk81x_bat_capacity_init_post(di);
2547 di->rsoc = rk81x_bat_get_rsoc(di);
2548 di->remain_capacity =
2549 rk81x_bat_get_realtime_capacity(di);
2550 di->err_soc_sum = 0;
2551 di->err_chck_cnt = 0;
2552 DBG("<%s>. update: rsoc = %d\n", __func__, ocv_soc);
2556 di->err_chck_cnt = 0;
2557 di->err_soc_sum = 0;
2561 static void rk81x_bat_rsoc_check(struct rk81x_battery *di)
2563 u8 status = di->psy_status;
2565 if ((status == POWER_SUPPLY_STATUS_CHARGING) ||
2566 (status == POWER_SUPPLY_STATUS_FULL)) {
2567 if ((di->current_avg < 0) &&
2568 (di->chrg_status != CHARGE_FINISH))
2569 rk81x_bat_rsoc_dischrg_check(di);
2572 rsoc_chrg_calib(di);
2575 } else if (status == POWER_SUPPLY_STATUS_DISCHARGING) {
2576 rk81x_bat_rsoc_dischrg_check(di);
2580 static void rk81x_bat_emulator_dischrg(struct rk81x_battery *di)
2582 u32 temp, soc_time = 0;
2583 unsigned long sec_unit;
2585 if (!di->dischrg_emu_base)
2586 di->dischrg_emu_base = get_runtime_sec();
2588 sec_unit = BASE_TO_SEC(di->dischrg_emu_base) + di->dischrg_save_sec;
2590 temp = di->fcc * 3600 / 100;
2592 if (abs(di->current_avg) < DSOC_DISCHRG_EMU_CURR)
2593 soc_time = temp / div(abs(DSOC_DISCHRG_EMU_CURR));
2595 soc_time = temp / div(abs(di->current_avg));
2597 if (sec_unit > soc_time) {
2599 di->dischrg_emu_base = get_runtime_sec();
2600 di->dischrg_save_sec = 0;
2603 DBG("<%s> soc_time=%d, sec_unit=%lu\n",
2604 __func__, soc_time, sec_unit);
2608 * when there is a big offset between dsoc and rsoc, dsoc needs to
2609 * speed up to keep pace witch rsoc.
2611 static void rk81x_bat_emulator_chrg(struct rk81x_battery *di)
2613 u32 soc_time = 0, temp;
2615 unsigned long chrg_emu_sec;
2617 if (!di->chrg_emu_base)
2618 di->chrg_emu_base = get_runtime_sec();
2620 chrg_emu_sec = BASE_TO_SEC(di->chrg_emu_base) + di->chrg_save_sec;
2621 temp = di->fcc * 3600 / 100;
2623 if (di->ac_online) {
2624 if (di->current_avg < DSOC_CHRG_EMU_CURR)
2625 soc_time = temp / abs(DSOC_CHRG_EMU_CURR);
2627 soc_time = temp / div(abs(di->current_avg));
2629 soc_time = temp / 450;
2632 plus_soc = chrg_emu_sec / soc_time;
2633 if (chrg_emu_sec > soc_time) {
2634 di->dsoc += plus_soc;
2635 di->chrg_emu_base = get_runtime_sec();
2636 di->chrg_save_sec = 0;
2639 DBG("<%s>. soc_time=%d, chrg_emu_sec=%lu, plus_soc=%d\n",
2640 __func__, soc_time, chrg_emu_sec, plus_soc);
2643 /* check voltage and current when dsoc is close to full.
2644 * we will do a fake charge to adjust charing speed which
2645 * aims to make battery full charged and match finish signal.
2647 static void rk81x_bat_terminal_chrg(struct rk81x_battery *di)
2651 unsigned long chrg_term_sec;
2653 if (!di->chrg_term_base)
2654 di->chrg_term_base = get_runtime_sec();
2656 chrg_term_sec = BASE_TO_SEC(di->chrg_term_base) + di->chrg_save_sec;
2657 /*check current and voltage*/
2659 soc_time = di->fcc * 3600 / 100 / (abs(DSOC_CHRG_TERM_CURR));
2661 plus_soc = chrg_term_sec / soc_time;
2662 if (chrg_term_sec > soc_time) {
2663 di->dsoc += plus_soc;
2664 di->chrg_term_base = get_runtime_sec();
2665 di->chrg_save_sec = 0;
2667 DBG("<%s>. soc_time=%d, chrg_term_sec=%lu, plus_soc=%d\n",
2668 __func__, soc_time, chrg_term_sec, plus_soc);
2671 static void rk81x_bat_normal_dischrg(struct rk81x_battery *di)
2674 int now_current = di->current_avg;
2675 unsigned long dischrg_normal_sec;
2677 if (!di->dischrg_normal_base)
2678 di->dischrg_normal_base = get_runtime_sec();
2680 dischrg_normal_sec = BASE_TO_SEC(di->dischrg_normal_base) +
2681 di->dischrg_save_sec;
2683 soc_time = di->fcc * 3600 / 100 / div(abs(now_current));
2684 DBG("<%s>. rsoc=%d, dsoc=%d, dischrg_st=%d\n",
2685 __func__, di->rsoc, di->dsoc, di->discharge_smooth_status);
2687 if (di->rsoc == di->dsoc) {
2688 DBG("<%s>. rsoc == dsoc\n", __func__);
2689 di->dsoc = di->rsoc;
2690 di->dischrg_normal_base = get_runtime_sec();
2691 di->dischrg_save_sec = 0;
2692 /*di->discharge_smooth_status = false;*/
2693 } else if (di->rsoc > di->dsoc - 1) {
2694 DBG("<%s>. rsoc > dsoc - 1\n", __func__);
2695 if (dischrg_normal_sec > soc_time * 3 / 2) {
2697 di->dischrg_normal_base = get_runtime_sec();
2698 di->dischrg_save_sec = 0;
2700 di->discharge_smooth_status = true;
2702 } else if (di->rsoc < di->dsoc - 1) {
2703 DBG("<%s>. rsoc < dsoc - 1\n", __func__);
2704 if (dischrg_normal_sec > soc_time * 3 / 4) {
2706 di->dischrg_normal_base = get_runtime_sec();
2707 di->dischrg_save_sec = 0;
2709 di->discharge_smooth_status = true;
2711 } else if (di->rsoc == di->dsoc - 1) {
2712 DBG("<%s>. rsoc == dsoc - 1\n", __func__);
2713 if (di->discharge_smooth_status) {
2714 if (dischrg_normal_sec > soc_time * 3 / 4) {
2716 di->dischrg_normal_base = get_runtime_sec();
2717 di->dischrg_save_sec = 0;
2718 di->discharge_smooth_status = false;
2722 di->dischrg_normal_base = get_runtime_sec();
2723 di->dischrg_save_sec = 0;
2724 di->discharge_smooth_status = false;
2728 DBG("<%s>, rsoc = %d, dsoc = %d, discharge_smooth_status = %d\n"
2729 "dischrg_normal_sec = %lu, soc_time = %d, delta_vol=%d\n",
2730 __func__, di->rsoc, di->dsoc, di->discharge_smooth_status,
2731 dischrg_normal_sec, soc_time, di->delta_vol_smooth);
2734 static void rk81x_bat_dischrg_smooth(struct rk81x_battery *di)
2739 /* first resume from suspend: we don't run this,
2740 * the sleep_dischrg will handle dsoc, and what
2741 * ever this is fake wakeup or not, we should clean
2742 * zero algorithm mode, or it will handle the dsoc.
2745 rk81x_bat_reset_zero_var(di);
2749 di->rsoc = rk81x_bat_get_rsoc(di);
2751 DBG("<%s>. rsoc = %d, dsoc = %d, dischrg_algorithm_mode=%d\n",
2752 __func__, di->rsoc, di->dsoc, di->dischrg_algorithm_mode);
2754 if (di->dischrg_algorithm_mode == DISCHRG_NORMAL_MODE) {
2755 delta_soc = di->dsoc - di->rsoc;
2757 if (delta_soc > DSOC_DISCHRG_FAST_EER_RANGE) {
2758 di->dischrg_normal_base = 0;
2759 rk81x_bat_emulator_dischrg(di);
2761 di->chrg_emu_base = 0;
2762 rk81x_bat_normal_dischrg(di);
2765 if (di->voltage < ZERO_ALGOR_THRESD) {
2766 di->dischrg_normal_base = 0;
2767 di->chrg_emu_base = 0;
2768 di->dischrg_algorithm_mode = DISCHRG_ZERO_MODE;
2769 di->zero_timeout_cnt = 0;
2771 DBG("<%s>. dsoc=%d, last_zero_mode_dsoc=%d\n",
2772 __func__, di->dsoc, di->last_zero_mode_dsoc);
2773 if (di->dsoc != di->last_zero_mode_dsoc) {
2774 tmp_dsoc = (di->display_soc +
2775 MIN_ROUND_ACCURACY) / 1000;
2776 /* if last display_soc invalid, recalc.
2777 * otherwise keep this value(in case: plugin and
2778 * plugout quickly or wakeup from deep sleep,
2779 * we need't init display_soc)
2781 if (tmp_dsoc != di->dsoc)
2782 /* first init value should round up,
2783 * other wise dsoc will quickly turn to
2784 * dsoc-- if MIN_ROUND_ACCURACY value is
2785 * small,eg:1.(in case: power on system)
2787 di->display_soc = (di->dsoc + 1) *
2788 1000 - MIN_ROUND_ACCURACY;
2789 di->last_zero_mode_dsoc = di->dsoc;
2790 rk81x_bat_zero_calc_linek(di);
2791 DBG("<%s>. first calc, init linek\n", __func__);
2795 rk81x_bat_zero_algorithm(di);
2797 if (di->voltage > ZERO_ALGOR_THRESD + 50) {
2798 di->dischrg_algorithm_mode = DISCHRG_NORMAL_MODE;
2799 di->zero_timeout_cnt = 0;
2800 DBG("<%s>. exit zero_algorithm\n", __func__);
2805 static void rk81x_bat_dbg_time_table(struct rk81x_battery *di)
2808 static int old_index;
2811 int mod = di->dsoc % 10;
2812 int index = di->dsoc / 10;
2814 if (rk81x_chrg_online(di))
2815 time = di->plug_in_min;
2817 time = di->plug_out_min;
2819 if ((mod == 0) && (index > 0) && (old_index != index)) {
2820 di->chrg_min[index-1] = time - old_min;
2825 for (i = 1; i < 11; i++)
2826 DBG("Time[%d]=%d, ", (i * 10), di->chrg_min[i-1]);
2830 static void rk81x_bat_dbg_dmp_info(struct rk81x_battery *di)
2832 u8 sup_tst_reg, ggcon_reg, ggsts_reg, vb_mod_reg;
2833 u8 usb_ctrl_reg, chrg_ctrl_reg1, thremal_reg;
2834 u8 chrg_ctrl_reg2, chrg_ctrl_reg3, rtc_val, misc_reg;
2837 rk81x_bat_read(di, MISC_MARK_REG, &misc_reg, 1);
2838 rk81x_bat_read(di, GGCON, &ggcon_reg, 1);
2839 rk81x_bat_read(di, GGSTS, &ggsts_reg, 1);
2840 rk81x_bat_read(di, SUP_STS_REG, &sup_tst_reg, 1);
2841 rk81x_bat_read(di, VB_MOD_REG, &vb_mod_reg, 1);
2842 rk81x_bat_read(di, USB_CTRL_REG, &usb_ctrl_reg, 1);
2843 rk81x_bat_read(di, CHRG_CTRL_REG1, &chrg_ctrl_reg1, 1);
2844 rk81x_bat_read(di, CHRG_CTRL_REG2, &chrg_ctrl_reg2, 1);
2845 rk81x_bat_read(di, CHRG_CTRL_REG3, &chrg_ctrl_reg3, 1);
2846 rk81x_bat_read(di, 0x00, &rtc_val, 1);
2847 rk81x_bat_read(di, THERMAL_REG, &thremal_reg, 1);
2850 DBG("\n------------- dump_debug_regs -----------------\n"
2851 "GGCON = 0x%2x, GGSTS = 0x%2x, RTC = 0x%2x\n"
2852 "SUP_STS_REG = 0x%2x, VB_MOD_REG = 0x%2x\n"
2853 "USB_CTRL_REG = 0x%2x, CHRG_CTRL_REG1 = 0x%2x\n"
2854 "THERMAL_REG = 0x%2x, MISC_MARK_REG = 0x%x\n"
2855 "CHRG_CTRL_REG2 = 0x%2x, CHRG_CTRL_REG3 = 0x%2x\n\n",
2856 ggcon_reg, ggsts_reg, rtc_val,
2857 sup_tst_reg, vb_mod_reg,
2858 usb_ctrl_reg, chrg_ctrl_reg1,
2859 thremal_reg, misc_reg,
2860 chrg_ctrl_reg2, chrg_ctrl_reg3
2863 DBG("#######################################################\n"
2864 "voltage = %d, current-avg = %d\n"
2865 "fcc = %d, remain_capacity = %d, ocv_volt = %d\n"
2866 "check_ocv = %d, check_soc = %d, bat_res = %d\n"
2867 "display_soc = %d, cpapacity_soc = %d\n"
2868 "AC-ONLINE = %d, USB-ONLINE = %d, charging_status = %d\n"
2869 "i_offset=0x%x, cal_offset=0x%x, adjust_cap=%d\n"
2870 "plug_in = %d, plug_out = %d, finish_sig = %d, finish_chrg=%lu\n"
2871 "sec: chrg=%lu, dischrg=%lu, term_chrg=%lu, emu_chrg=%lu\n"
2872 "emu_dischrg = %lu, power_on_sec = %lu\n"
2873 "mode:%d, save_chrg_sec = %lu, save_dischrg_sec = %lu\n"
2874 "#########################################################\n",
2875 di->voltage, di->current_avg,
2876 di->fcc, di->remain_capacity, di->voltage_ocv,
2877 di->est_ocv_vol, di->est_ocv_soc, di->bat_res,
2879 di->ac_online, di->usb_online, di->psy_status,
2880 rk81x_bat_get_ioffset(di), rk81x_bat_get_cal_offset(di),
2881 di->adjust_cap, di->plug_in_min, di->plug_out_min,
2882 di->finish_sig_min, BASE_TO_SEC(di->chrg_finish_base),
2883 BASE_TO_SEC(di->chrg_normal_base),
2884 BASE_TO_SEC(di->dischrg_normal_base),
2885 BASE_TO_SEC(di->chrg_term_base),
2886 BASE_TO_SEC(di->chrg_emu_base),
2887 BASE_TO_SEC(di->dischrg_emu_base),
2888 BASE_TO_SEC(di->power_on_base),
2889 di->current_mode, di->chrg_save_sec, di->dischrg_save_sec
2893 static void rk81x_bat_update_fcc(struct rk81x_battery *di)
2897 int dod0_to_soc100_min;
2899 remain_cap = di->remain_capacity - di->dod0_capacity - di->adjust_cap;
2900 dod0_to_soc100_min = BASE_TO_MIN(di->fcc_update_sec);
2902 DBG("%s: remain_cap:%d, ajust_cap:%d, dod0_status=%d\n"
2903 "dod0_capacity:%d, dod0_to_soc100_min:%d\n",
2904 __func__, remain_cap, di->adjust_cap, di->dod0_status,
2905 di->dod0_capacity, dod0_to_soc100_min);
2907 if ((di->chrg_status == CHARGE_FINISH) && (di->dod0_status == 1) &&
2908 (dod0_to_soc100_min < 1200)) {
2909 DBG("%s: dod0:%d, dod0_cap:%d, dod0_level:%d\n",
2910 __func__, di->dod0, di->dod0_capacity, di->dod0_level);
2912 fcc0 = remain_cap * 100 / div(100 - di->dod0);
2914 dev_info(di->dev, "%s: fcc0:%d, fcc:%d\n",
2915 __func__, fcc0, di->fcc);
2917 if ((fcc0 < di->qmax) && (fcc0 > 1000)) {
2918 di->dod0_status = 0;
2920 rk81x_bat_capacity_init(di, di->fcc);
2921 rk81x_bat_capacity_init_post(di);
2922 rk81x_bat_save_fcc(di, di->fcc);
2923 rk81x_bat_save_level(di, di->dod0_level);
2924 DBG("%s: new fcc0:%d\n", __func__, di->fcc);
2927 di->dod0_status = 0;
2931 static void rk81x_bat_dbg_get_finish_soc(struct rk81x_battery *di)
2933 if (di->chrg_status == CHARGE_FINISH) {
2934 di->debug_finish_real_soc = di->dsoc;
2935 di->debug_finish_temp_soc = di->rsoc;
2939 static void rk81x_bat_wait_finish_sig(struct rk81x_battery *di)
2941 int chrg_finish_vol = di->pdata->max_charger_voltagemV;
2944 if ((di->chrg_status == CHARGE_FINISH) &&
2945 (di->voltage > chrg_finish_vol - 150) && di->enter_finish) {
2946 rk81x_bat_update_fcc(di);/* save new fcc*/
2947 ret = rk81x_bat_zero_current_calib(di);
2949 di->enter_finish = false;
2951 rk81x_bat_dbg_get_finish_soc(di);
2955 static void rk81x_bat_finish_chrg(struct rk81x_battery *di)
2957 unsigned long sec_finish;
2958 int soc_time = 0, plus_soc;
2961 if (di->dsoc < 100) {
2962 if (!di->chrg_finish_base)
2963 di->chrg_finish_base = get_runtime_sec();
2965 sec_finish = BASE_TO_SEC(di->chrg_finish_base) +
2967 temp = di->fcc * 3600 / 100;
2969 soc_time = temp / DSOC_CHRG_FINISH_CURR;
2971 soc_time = temp / 450;
2973 plus_soc = sec_finish / soc_time;
2974 if (sec_finish > soc_time) {
2975 di->dsoc += plus_soc;
2976 di->chrg_finish_base = get_runtime_sec();
2977 di->chrg_save_sec = 0;
2979 DBG("<%s>,CHARGE_FINISH:dsoc<100,dsoc=%d\n"
2980 "soc_time=%d, sec_finish=%lu, plus_soc=%d\n",
2981 __func__, di->dsoc, soc_time, sec_finish, plus_soc);
2985 static u8 rk81x_bat_get_valid_soc(unsigned long soc)
2987 return (soc <= 100) ? soc : 0;
2990 static void rk81x_bat_normal_chrg(struct rk81x_battery *di)
2993 u32 soc_time, unit_sec;
2995 unsigned long chrg_normal_sec;
2997 now_current = rk81x_bat_get_avg_current(di);
2998 soc_time = di->fcc * 3600 / 100 / div(abs(now_current)); /*1% time*/
3000 if (!di->chrg_normal_base)
3001 di->chrg_normal_base = get_runtime_sec();
3003 chrg_normal_sec = BASE_TO_SEC(di->chrg_normal_base) + di->chrg_save_sec;
3004 di->rsoc = rk81x_bat_get_rsoc(di);
3006 DBG("<%s>. rsoc=%d, dsoc=%d, chrg_st=%d\n",
3007 __func__, di->rsoc, di->dsoc, di->charge_smooth_status);
3009 if (di->dsoc == di->rsoc) {
3010 DBG("<%s>. rsoc == dsoc + 1\n", __func__);
3011 di->rsoc = rk81x_bat_get_rsoc(di);
3012 di->chrg_normal_base = get_runtime_sec();
3013 di->chrg_save_sec = 0;
3014 /*di->charge_smooth_status = false;*/
3015 } else if (di->rsoc < di->dsoc + 1) {
3016 DBG("<%s>. rsoc < dsoc + 1\n", __func__);
3017 unit_sec = soc_time * 3 / 2;
3018 plus_soc = rk81x_bat_get_valid_soc(chrg_normal_sec / unit_sec);
3019 if (chrg_normal_sec > unit_sec) {
3020 di->dsoc += plus_soc;
3021 di->chrg_normal_base = get_runtime_sec();
3022 di->chrg_save_sec = 0;
3024 di->charge_smooth_status = true;
3025 } else if (di->rsoc > di->dsoc + 1) {
3026 DBG("<%s>. rsoc > dsoc + 1\n", __func__);
3027 unit_sec = soc_time * 3 / 4;
3028 plus_soc = rk81x_bat_get_valid_soc(chrg_normal_sec / unit_sec);
3029 if (chrg_normal_sec > unit_sec) {
3030 di->dsoc += plus_soc;
3031 di->chrg_normal_base = get_runtime_sec();
3032 di->chrg_save_sec = 0;
3034 di->charge_smooth_status = true;
3035 } else if (di->rsoc == di->dsoc + 1) {
3036 DBG("<%s>. rsoc == dsoc + 1\n", __func__);
3037 if (di->charge_smooth_status) {
3038 unit_sec = soc_time * 3 / 4;
3039 if (chrg_normal_sec > unit_sec) {
3040 di->dsoc = di->rsoc;
3041 di->chrg_normal_base = get_runtime_sec();
3042 di->charge_smooth_status = false;
3043 di->chrg_save_sec = 0;
3046 di->dsoc = di->rsoc;
3047 di->chrg_normal_base = get_runtime_sec();
3048 di->charge_smooth_status = false;
3049 di->chrg_save_sec = 0;
3053 DBG("<%s>, rsoc = %d, dsoc = %d, charge_smooth_status = %d\n"
3054 "chrg_normal_sec = %lu, soc_time = %d, plus_soc=%d\n",
3055 __func__, di->rsoc, di->dsoc, di->charge_smooth_status,
3056 chrg_normal_sec, soc_time, plus_soc);
3059 static void rk81x_bat_update_time(struct rk81x_battery *di)
3063 runtime_sec = get_runtime_sec();
3065 /*update by charger type*/
3066 if (rk81x_chrg_online(di))
3067 di->plug_out_base = runtime_sec;
3069 di->plug_in_base = runtime_sec;
3071 /*update by current*/
3072 if (di->chrg_status != CHARGE_FINISH) {
3073 di->finish_sig_base = runtime_sec;
3074 di->chrg_finish_base = runtime_sec;
3077 di->plug_in_min = BASE_TO_MIN(di->plug_in_base);
3078 di->plug_out_min = BASE_TO_MIN(di->plug_out_base);
3079 di->finish_sig_min = BASE_TO_MIN(di->finish_sig_base);
3081 rk81x_bat_dbg_time_table(di);
3084 static int rk81x_bat_get_rsoc_trend(struct rk81x_battery *di, int *trend_mult)
3086 int trend_start_cap = di->trend_start_cap;
3087 int remain_cap = di->remain_capacity;
3091 if (di->s2r && !di->slp_psy_status)
3092 di->trend_start_cap = di->remain_capacity;
3094 diff_cap = remain_cap - trend_start_cap;
3095 DBG("<%s>. trend_start_cap = %d, diff_cap = %d\n",
3096 __func__, trend_start_cap, diff_cap);
3097 *trend_mult = abs(diff_cap) / TREND_CAP_DIFF;
3099 if (abs(diff_cap) >= TREND_CAP_DIFF) {
3100 di->trend_start_cap = di->remain_capacity;
3101 state = (diff_cap > 0) ? TREND_STAT_UP : TREND_STAT_DOWN;
3102 DBG("<%s>. new trend_start_cap=%d", __func__, trend_start_cap);
3104 state = TREND_STAT_FLAT;
3110 static void rk81x_bat_arbitrate_rsoc_trend(struct rk81x_battery *di)
3112 int state, soc_time;
3113 static int trend_down_cnt, trend_up_cnt;
3114 int trend_cnt_thresd;
3115 int now_current = di->current_avg;
3118 trend_cnt_thresd = di->fcc / 100 / TREND_CAP_DIFF;
3119 state = rk81x_bat_get_rsoc_trend(di, &trend_mult);
3120 DBG("<%s>. TREND_STAT = %d, trend_mult = %d\n",
3121 __func__, state, trend_mult);
3122 if (di->chrg_status == CHARGE_FINISH)
3125 if (state == TREND_STAT_UP) {
3126 rk81x_bat_reset_zero_var(di);
3128 trend_up_cnt += trend_mult;
3129 if (trend_up_cnt >= trend_cnt_thresd) {
3131 di->dischrg_save_sec = 0;
3133 } else if (state == TREND_STAT_DOWN) {
3135 trend_down_cnt += trend_mult;
3136 if (trend_down_cnt >= trend_cnt_thresd) {
3138 di->chrg_save_sec = 0;
3142 soc_time = di->fcc * 3600 / 100 / div(abs(now_current));
3143 if ((di->chrg_save_sec * 3 / 4 > soc_time) &&
3144 (trend_up_cnt <= trend_cnt_thresd / 2) &&
3146 di->chrg_save_sec = 0;
3148 else if ((di->dischrg_save_sec * 3 / 4 > soc_time) &&
3149 (trend_down_cnt <= trend_cnt_thresd / 2) &&
3151 di->dischrg_save_sec = 0;
3153 DBG("<%s>. state=%d, cnt_thresd=%d, soc_time=%d\n"
3154 "up_cnt=%d, down_cnt=%d\n",
3155 __func__, state, trend_cnt_thresd, soc_time,
3156 trend_up_cnt, trend_down_cnt);
3159 static void rk81x_bat_chrg_smooth(struct rk81x_battery *di)
3161 u32 *ocv_table = di->pdata->battery_ocv;
3162 int delta_soc = di->rsoc - di->dsoc;
3164 if (di->chrg_status == CHARGE_FINISH ||
3165 di->slp_chrg_status == CHARGE_FINISH) {
3166 /*clear sleep charge status*/
3167 di->slp_chrg_status = rk81x_bat_get_chrg_status(di);
3168 di->chrg_emu_base = 0;
3169 di->chrg_normal_base = 0;
3170 di->chrg_term_base = 0;
3171 rk81x_bat_finish_chrg(di);
3172 rk81x_bat_capacity_init(di, di->fcc);
3173 rk81x_bat_capacity_init_post(di);
3174 } else if ((di->ac_online == ONLINE && di->dsoc >= 90) &&
3175 ((di->current_avg > DSOC_CHRG_TERM_CURR) ||
3176 (di->voltage < ocv_table[18] + 20))) {
3177 di->chrg_emu_base = 0;
3178 di->chrg_normal_base = 0;
3179 di->chrg_finish_base = 0;
3180 rk81x_bat_terminal_chrg(di);
3181 } else if (di->chrg_status != CHARGE_FINISH &&
3182 delta_soc >= DSOC_CHRG_FAST_EER_RANGE) {
3183 di->chrg_term_base = 0;
3184 di->chrg_normal_base = 0;
3185 di->chrg_finish_base = 0;
3186 rk81x_bat_emulator_chrg(di);
3188 di->chrg_emu_base = 0;
3189 di->chrg_term_base = 0;
3190 di->chrg_finish_base = 0;
3191 rk81x_bat_normal_chrg(di);
3195 static unsigned long rk81x_bat_save_dischrg_sec(struct rk81x_battery *di)
3197 unsigned long dischrg_normal_sec = BASE_TO_SEC(di->dischrg_normal_base);
3198 unsigned long dischrg_emu_sec = BASE_TO_SEC(di->dischrg_emu_base);
3200 DBG("dischrg_normal_sec=%lu, dischrg_emu_sec=%lu\n",
3201 dischrg_normal_sec, dischrg_emu_sec);
3203 return (dischrg_normal_sec > dischrg_emu_sec) ?
3204 dischrg_normal_sec : dischrg_emu_sec;
3207 static unsigned long rk81x_bat_save_chrg_sec(struct rk81x_battery *di)
3209 unsigned long sec1, sec2;
3210 unsigned long chrg_normal_sec = BASE_TO_SEC(di->chrg_normal_base);
3211 unsigned long chrg_term_sec = BASE_TO_SEC(di->chrg_term_base);
3212 unsigned long chrg_emu_sec = BASE_TO_SEC(di->chrg_emu_base);
3213 unsigned long chrg_finish_sec = BASE_TO_SEC(di->chrg_finish_base);
3215 sec1 = (chrg_normal_sec > chrg_term_sec) ?
3216 chrg_normal_sec : chrg_term_sec;
3218 sec2 = (chrg_emu_sec > chrg_finish_sec) ?
3219 chrg_emu_sec : chrg_finish_sec;
3220 DBG("chrg_normal_sec=%lu, chrg_term_sec=%lu\n"
3221 "chrg_emu_sec=%lu, chrg_finish_sec=%lu\n",
3222 chrg_normal_sec, chrg_term_sec,
3223 chrg_emu_sec, chrg_finish_sec);
3225 return (sec1 > sec2) ? sec1 : sec2;
3228 static void rk81x_bat_display_smooth(struct rk81x_battery *di)
3230 if ((di->current_avg >= 0) || (di->chrg_status == CHARGE_FINISH)) {
3231 if (di->current_mode == DISCHRG_MODE) {
3232 di->current_mode = CHRG_MODE;
3233 di->dischrg_save_sec += rk81x_bat_save_dischrg_sec(di);
3234 di->dischrg_normal_base = 0;
3235 di->dischrg_emu_base = 0;
3236 if (di->chrg_status == CHARGE_FINISH)
3237 di->dischrg_save_sec = 0;
3238 if ((di->chrg_status == CHARGE_FINISH) &&
3240 di->chrg_save_sec = 0;
3242 DBG("<%s>---dischrg_save_sec = %lu\n",
3243 __func__, di->dischrg_save_sec);
3246 if (!rk81x_chrg_online(di)) {
3247 dev_err(di->dev, "discharge, current error:%d\n",
3250 rk81x_bat_chrg_smooth(di);
3251 di->discharge_smooth_status = true;
3254 if (di->current_mode == CHRG_MODE) {
3255 di->current_mode = DISCHRG_MODE;
3256 di->chrg_save_sec += rk81x_bat_save_chrg_sec(di);
3257 di->chrg_normal_base = 0;
3258 di->chrg_emu_base = 0;
3259 di->chrg_term_base = 0;
3260 di->chrg_finish_base = 0;
3261 DBG("<%s>---chrg_save_sec = %lu\n",
3262 __func__, di->chrg_save_sec);
3264 rk81x_bat_dischrg_smooth(di);
3265 di->charge_smooth_status = true;
3270 * update rsoc by relax voltage
3272 static void rk81x_bat_relax_vol_calib(struct rk81x_battery *di)
3274 int relax_vol = di->relax_voltage;
3275 int ocv_soc, capacity;
3277 ocv_soc = rk81x_bat_vol_to_capacity(di, relax_vol);
3278 capacity = (ocv_soc * di->fcc / 100);
3279 rk81x_bat_capacity_init(di, capacity);
3280 di->remain_capacity = rk81x_bat_get_realtime_capacity(di);
3281 di->rsoc = rk81x_bat_get_rsoc(di);
3282 rk81x_bat_capacity_init_post(di);
3283 DBG("%s, RSOC=%d, CAP=%d\n", __func__, ocv_soc, capacity);
3287 * 1: must do it, 0: when necessary
3289 static void rk81x_bat_vol_calib(struct rk81x_battery *di, int condition)
3291 int ocv_vol = di->est_ocv_vol;
3292 int ocv_soc = 0, capacity = 0;
3294 ocv_soc = rk81x_bat_vol_to_capacity(di, ocv_vol);
3295 capacity = (ocv_soc * di->fcc / 100);
3296 if (condition || (abs(ocv_soc-di->rsoc) >= RSOC_RESUME_ERR)) {
3297 rk81x_bat_capacity_init(di, capacity);
3298 di->remain_capacity = rk81x_bat_get_realtime_capacity(di);
3299 di->rsoc = rk81x_bat_get_rsoc(di);
3300 rk81x_bat_capacity_init_post(di);
3301 DBG("<%s>, rsoc updated!\n", __func__);
3303 DBG("<%s>, OCV_VOL=%d,OCV_SOC=%d, CAP=%d\n",
3304 __func__, ocv_vol, ocv_soc, capacity);
3307 static int rk81x_bat_sleep_dischrg(struct rk81x_battery *di)
3311 unsigned long sleep_sec = di->suspend_time_sum;
3312 int power_off_thresd = di->pdata->power_off_thresd;
3314 DBG("<%s>, enter: dsoc=%d, rsoc=%d\n"
3315 "relax_vol=%d, vol=%d, sleep_min=%lu\n",
3316 __func__, di->dsoc, di->rsoc,
3317 di->relax_voltage, di->voltage, sleep_sec / 60);
3319 if (di->relax_voltage >= di->voltage) {
3320 rk81x_bat_relax_vol_calib(di);
3321 rk81x_bat_restart_relax(di);
3323 /* current_avg < 0: make sure the system is not
3324 * wakeup by charger plugin.
3326 /* even if relax voltage is not caught rightly, realtime voltage
3327 * is quite close to relax voltage, we should not do nothing after
3331 rk81x_bat_vol_calib(di, 1);
3335 if (di->dsoc <= di->rsoc) {
3336 di->sum_suspend_cap = (SLP_CURR_MIN * sleep_sec / 3600);
3337 delta_soc = di->sum_suspend_cap * 100 / di->fcc;
3338 temp_dsoc = di->dsoc - delta_soc;
3340 pr_info("battery calib0: rl=%d, dl=%d, intl=%d\n",
3341 di->rsoc, di->dsoc, delta_soc);
3343 if (delta_soc > 0) {
3344 if ((temp_dsoc < di->dsoc) && (di->dsoc < 5))
3346 else if ((temp_dsoc < 5) && (di->dsoc >= 5))
3348 else if (temp_dsoc > 5)
3349 di->dsoc = temp_dsoc;
3352 DBG("%s: dsoc<=rsoc, sum_cap=%d==>delta_soc=%d,temp_dsoc=%d\n",
3353 __func__, di->sum_suspend_cap, delta_soc, temp_dsoc);
3355 /*di->dsoc > di->rsoc*/
3356 di->sum_suspend_cap = (SLP_CURR_MAX * sleep_sec / 3600);
3357 delta_soc = di->sum_suspend_cap / (di->fcc / 100);
3358 temp_dsoc = di->dsoc - di->rsoc;
3360 pr_info("battery calib1: rsoc=%d, dsoc=%d, intsoc=%d\n",
3361 di->rsoc, di->dsoc, delta_soc);
3363 if ((di->est_ocv_vol > SLP_DSOC_VOL_THRESD) &&
3364 (temp_dsoc > delta_soc))
3365 di->dsoc -= delta_soc;
3367 di->dsoc = di->rsoc;
3369 DBG("%s: dsoc > rsoc, sum_cap=%d==>delta_soc=%d,temp_dsoc=%d\n",
3370 __func__, di->sum_suspend_cap, delta_soc, temp_dsoc);
3373 if (!di->relax_voltage && di->voltage <= power_off_thresd)
3379 DBG("<%s>, out: dsoc=%d, rsoc=%d, sum_cap=%d\n",
3380 __func__, di->dsoc, di->rsoc, di->sum_suspend_cap);
3385 static int rk81x_bat_sleep_chrg(struct rk81x_battery *di)
3388 unsigned long sleep_sec;
3390 sleep_sec = di->suspend_time_sum;
3391 if (((di->suspend_charge_current < 800) &&
3392 (di->ac_online == ONLINE)) ||
3393 (di->chrg_status == CHARGE_FINISH)) {
3394 DBG("<%s>,sleep: ac online current < 800\n", __func__);
3395 if (sleep_sec > 0) {
3396 /*default charge current: 1000mA*/
3397 sleep_soc = SLP_CHRG_CURR * sleep_sec * 100
3398 / 3600 / div(di->fcc);
3401 DBG("<%s>, usb charge\n", __func__);
3408 * only do report when there is a change.
3410 * if ((di->dsoc == 0) && (di->fg_drv_mode == FG_NORMAL_MODE)):
3411 * when dsoc == 0, we must do report. But it will generate too much android
3412 * info when we enter test_power mode without battery, so we add a fg_drv_mode
3415 static void rk81x_bat_power_supply_changed(struct rk81x_battery *di)
3418 static u32 old_ac_status;
3419 static u32 old_usb_status;
3420 static u32 old_charge_status;
3423 state_changed = false;
3424 if ((di->dsoc == 0) && (di->fg_drv_mode == FG_NORMAL_MODE))
3425 state_changed = true;
3426 else if (di->dsoc != old_soc)
3427 state_changed = true;
3428 else if (di->ac_online != old_ac_status)
3429 state_changed = true;
3430 else if (di->usb_online != old_usb_status)
3431 state_changed = true;
3432 else if (old_charge_status != di->psy_status)
3433 state_changed = true;
3435 if (rk81x_chrg_online(di)) {
3436 if (di->dsoc == 100)
3437 di->psy_status = POWER_SUPPLY_STATUS_FULL;
3439 di->psy_status = POWER_SUPPLY_STATUS_CHARGING;
3442 if (state_changed) {
3443 power_supply_changed(&di->bat);
3444 power_supply_changed(&di->usb);
3445 power_supply_changed(&di->ac);
3447 old_ac_status = di->ac_online;
3448 old_usb_status = di->usb_online;
3449 old_charge_status = di->psy_status;
3450 dev_info(di->dev, "changed: dsoc=%d, rsoc=%d\n",
3451 di->dsoc, di->rsoc);
3456 static u8 rk81x_bat_get_cvcc_chrg_hour(struct rk81x_battery *di)
3460 rk81x_bat_read(di, CHRG_CTRL_REG2, &buf, 1);
3463 return CHRG_CVCC_HOUR[hour];
3466 /* we have to estimate the charging finish time from now, to decide
3467 * whether we should reset the timer or not.
3469 static void rk81x_bat_chrg_over_time_check(struct rk81x_battery *di)
3472 int remain_capacity;
3474 cvcc_hour = rk81x_bat_get_cvcc_chrg_hour(di);
3475 if (di->dsoc < di->rsoc)
3476 remain_capacity = di->dsoc * di->fcc / 100;
3478 remain_capacity = di->remain_capacity;
3480 DBG("CHRG_TIME(min): %ld, cvcc hour: %d",
3481 BASE_TO_MIN(di->plug_in_base), cvcc_hour);
3483 if (BASE_TO_MIN(di->plug_in_base) >= (cvcc_hour - 2) * 60) {
3484 di->chrg_cap2full = di->fcc - remain_capacity;
3485 if (di->current_avg <= 0)
3486 di->current_avg = 1;
3488 di->chrg_time2full = di->chrg_cap2full * 3600 /
3489 div(abs(di->current_avg));
3491 DBG("CHRG_TIME2FULL(min):%d, chrg_cap2full=%d, current=%d\n",
3492 SEC_TO_MIN(di->chrg_time2full), di->chrg_cap2full,
3495 if (SEC_TO_MIN(di->chrg_time2full) > 60) {
3496 /*rk81x_bat_init_chrg_timer(di);*/
3497 di->plug_in_base = get_runtime_sec();
3498 DBG("%s: reset charge timer\n", __func__);
3505 * in case that we will do reboot stress test, we need a special way
3506 * to ajust the dsoc.
3508 static void rk81x_bat_check_reboot(struct rk81x_battery *di)
3516 rk81x_bat_read(di, REBOOT_CNT_REG, &cnt, 1);
3519 unit_time = di->fcc * 3600 / 100 / 1200;/*1200mA default*/
3520 smooth_time = cnt * BASE_TO_SEC(di->power_on_base);
3522 DBG("%s: cnt:%d, unit:%d, sm:%d, sec:%lu, dsoc:%d, rsoc:%d\n",
3523 __func__, cnt, unit_time, smooth_time,
3524 BASE_TO_SEC(di->power_on_base), dsoc, rsoc);
3526 if (di->current_avg >= 0 || di->chrg_status == CHARGE_FINISH) {
3527 DBG("chrg, sm:%d, aim:%d\n", smooth_time, unit_time * 3 / 5);
3528 if ((dsoc < rsoc - 1) && (smooth_time > unit_time * 3 / 5)) {
3533 rk81x_bat_save_dsoc(di, dsoc);
3536 DBG("dischrg, sm:%d, aim:%d\n", smooth_time, unit_time * 3 / 5);
3537 if ((dsoc > rsoc) && (smooth_time > unit_time * 3 / 5)) {
3542 rk81x_bat_save_dsoc(di, dsoc);
3546 rk81x_bat_save_reboot_cnt(di, cnt);
3549 static void rk81x_bat_update_calib_param(struct rk81x_battery *di)
3554 uint16_t cal_offset;
3555 u8 pcb_offset = DEF_PCB_OFFSET;
3557 min = BASE_TO_MIN(di->power_on_base);
3558 if ((min % 8) && (old_min != min)) {
3560 rk81x_bat_get_vol_offset(di);
3561 if (di->pcb_ioffset_updated)
3562 rk81x_bat_read(di, PCB_IOFFSET_REG, &pcb_offset, 1);
3564 current_offset = rk81x_bat_get_ioffset(di);
3565 rk81x_bat_set_cal_offset(di, current_offset + pcb_offset);
3566 cal_offset = rk81x_bat_get_cal_offset(di);
3567 if (cal_offset < 0x7ff)
3568 rk81x_bat_set_cal_offset(di, di->current_offset +
3570 DBG("<%s>. k=%d, b=%d, cal_offset=%d, i_offset=%d\n",
3571 __func__, di->voltage_k, di->voltage_b, cal_offset,
3572 rk81x_bat_get_ioffset(di));
3576 static void rk81x_bat_update_info(struct rk81x_battery *di)
3580 else if (di->dsoc < 0)
3584 * we need update fcc in continuous charging state, if discharge state
3585 * keep at least 2 hour, we decide not to update fcc, so clear the
3586 * fcc update flag: dod0_status.
3588 if (BASE_TO_MIN(di->plug_out_base) > 120)
3589 di->dod0_status = 0;
3591 di->voltage = rk81x_bat_get_vol(di);
3592 di->current_avg = rk81x_bat_get_avg_current(di);
3593 di->chrg_status = rk81x_bat_get_chrg_status(di);
3594 di->relax_voltage = rk81x_bat_get_relax_vol(di);
3595 di->est_ocv_vol = rk81x_bat_est_ocv_vol(di);
3596 di->est_ocv_soc = rk81x_bat_est_ocv_soc(di);
3597 /*rk81x_bat_chrg_over_time_check(di);*/
3598 rk81x_bat_update_calib_param(di);
3599 if (di->chrg_status == CC_OR_CV)
3600 di->enter_finish = true;
3602 if (!rk81x_chrg_online(di) && di->s2r)
3605 di->remain_capacity = rk81x_bat_get_realtime_capacity(di);
3606 if (di->remain_capacity > di->fcc) {
3607 rk81x_bat_capacity_init(di, di->fcc);
3608 rk81x_bat_capacity_init_post(di);
3609 di->remain_capacity = di->fcc;
3612 di->rsoc = rk81x_bat_get_rsoc(di);
3615 static int rk81x_bat_update_resume_state(struct rk81x_battery *di)
3617 if (di->slp_psy_status)
3618 return rk81x_bat_sleep_chrg(di);
3620 return rk81x_bat_sleep_dischrg(di);
3623 static void rk81x_bat_fcc_flag_check(struct rk81x_battery *di)
3625 u8 ocv_soc, soc_level;
3626 int relax_vol = di->relax_voltage;
3631 ocv_soc = rk81x_bat_vol_to_capacity(di, relax_vol);
3632 DBG("<%s>. ocv_soc=%d, min=%lu, vol=%d\n", __func__,
3633 ocv_soc, SEC_TO_MIN(di->suspend_time_sum), relax_vol);
3635 if ((SEC_TO_MIN(di->suspend_time_sum) > 30) &&
3636 (di->dod0_status == 0) &&
3638 di->dod0_voltage = relax_vol;
3639 di->dod0_capacity = di->temp_nac;
3644 di->dod0_level = 100;
3645 else if (ocv_soc < 5)
3646 di->dod0_level = 90;
3648 di->dod0_level = 80;
3650 /* save_soc = di->dod0_level; */
3651 soc_level = rk81x_bat_get_level(di);
3652 if (soc_level > di->dod0_level) {
3653 di->dod0_status = 0;
3655 di->dod0_status = 1;
3657 di->fcc_update_sec = get_runtime_sec();
3660 dev_info(di->dev, "resume: relax_vol:%d, dod0_cap:%d\n"
3661 "dod0:%d, soc_level:%d: dod0_status:%d\n"
3663 di->dod0_voltage, di->dod0_capacity,
3664 ocv_soc, soc_level, di->dod0_status,
3669 static void rk81x_chrg_term_mode_set(struct rk81x_battery *di, int mode)
3674 rk81x_bat_read(di, CHRG_CTRL_REG3, &buf, 1);
3677 rk81x_bat_write(di, CHRG_CTRL_REG3, &buf, 1);
3679 dev_info(di->dev, "set charge to %s termination mode\n",
3680 mode ? "digital" : "analog");
3683 static void rk81x_chrg_term_mode_switch_work(struct work_struct *work)
3685 struct rk81x_battery *di;
3687 di = container_of(work, struct rk81x_battery,
3688 chrg_term_mode_switch_work.work);
3690 if (rk81x_chrg_online(di))
3691 rk81x_chrg_term_mode_set(di, CHRG_TERM_DIG_SIGNAL);
3693 rk81x_chrg_term_mode_set(di, CHRG_TERM_ANA_SIGNAL);
3696 static void rk81x_battery_work(struct work_struct *work)
3698 struct rk81x_battery *di;
3699 int ms = TIMER_MS_COUNTS;
3701 di = container_of(work, struct rk81x_battery,
3702 battery_monitor_work.work);
3703 if (rk81x_chrg_online(di)) {
3704 rk81x_bat_wait_finish_sig(di);
3705 /*rk81x_bat_chrg_finish_routine(di);*/
3707 rk81x_bat_fcc_flag_check(di);
3708 rk81x_bat_arbitrate_rsoc_trend(di);
3709 rk81x_bat_display_smooth(di);
3710 rk81x_bat_update_time(di);
3711 rk81x_bat_update_info(di);
3712 rk81x_bat_rsoc_check(di);
3713 rk81x_bat_power_supply_changed(di);
3714 rk81x_bat_save_dsoc(di, di->dsoc);
3715 rk81x_bat_save_remain_capacity(di, di->remain_capacity);
3717 rk81x_bat_dbg_dmp_info(di);
3719 if (!di->early_resume && di->s2r && !di->slp_psy_status)
3720 ms = 30 * TIMER_MS_COUNTS;
3722 di->early_resume = 0;
3726 queue_delayed_work(di->wq, &di->battery_monitor_work,
3727 msecs_to_jiffies(ms));
3730 #if defined(CONFIG_ARCH_ROCKCHIP)
3731 static void rk81x_battery_otg_delay_work(struct work_struct *work)
3733 struct rk81x_battery *di = container_of(work,
3734 struct rk81x_battery, otg_check_work.work);
3736 enum bc_port_type event = di->charge_otg;
3738 /* do not touch CHRG_CTRL_REG1[7]: CHRG_EN, hardware can
3739 * recognize otg plugin and will auto ajust this bit
3742 case USB_OTG_POWER_ON:
3743 di->otg_online = ONLINE;
3744 if (power_dc2otg && di->dc_online) {
3745 dev_info(di->dev, "otg power from dc adapter\n");
3748 dev_info(di->dev, "charge disable, otg enable\n");
3749 rk81x_bat_set_otg_state(di, USB_OTG_POWER_ON);
3752 case USB_OTG_POWER_OFF:
3753 dev_info(di->dev, "charge enable, otg disable\n");
3754 di->otg_online = OFFLINE;
3755 rk81x_bat_set_otg_state(di, USB_OTG_POWER_OFF);
3756 /*maybe dc still plugin*/
3757 queue_delayed_work(di->wq, &di->dc_det_check_work,
3758 msecs_to_jiffies(10));
3766 static BLOCKING_NOTIFIER_HEAD(battery_chain_head);
3768 int register_battery_notifier(struct notifier_block *nb)
3770 return blocking_notifier_chain_register(&battery_chain_head, nb);
3772 EXPORT_SYMBOL_GPL(register_battery_notifier);
3774 int unregister_battery_notifier(struct notifier_block *nb)
3776 return blocking_notifier_chain_unregister(&battery_chain_head, nb);
3778 EXPORT_SYMBOL_GPL(unregister_battery_notifier);
3780 int battery_notifier_call_chain(unsigned long val)
3782 return (blocking_notifier_call_chain(&battery_chain_head, val, NULL)
3783 == NOTIFY_BAD) ? -EINVAL : 0;
3785 EXPORT_SYMBOL_GPL(battery_notifier_call_chain);
3787 static int rk81x_bat_usb_notifier_call(struct notifier_block *nb,
3788 unsigned long event, void *data)
3790 enum charger_type charger_type;
3791 struct rk81x_battery *di =
3792 container_of(nb, struct rk81x_battery, battery_nb);
3794 if (di->fg_drv_mode == TEST_POWER_MODE)
3797 /*if dc is pluging, ignore usb*/
3798 charger_type = rk81x_bat_get_dc_state(di);
3799 if ((charger_type == DC_CHARGER) &&
3800 (event != USB_OTG_POWER_OFF) &&
3801 (event != USB_OTG_POWER_ON))
3805 case USB_BC_TYPE_DISCNT:/*maybe dc still plugin*/
3806 queue_delayed_work(di->wq, &di->dc_det_check_work,
3807 msecs_to_jiffies(10));
3809 case USB_BC_TYPE_SDP:
3810 case USB_BC_TYPE_CDP:/*nonstandard charger*/
3811 case USB_BC_TYPE_DCP:/*standard charger*/
3812 queue_delayed_work(di->wq, &di->ac_usb_check_work,
3813 msecs_to_jiffies(10));
3815 case USB_OTG_POWER_ON:/*otg on*/
3816 di->charge_otg = USB_OTG_POWER_ON;
3817 queue_delayed_work(di->wq, &di->otg_check_work,
3818 msecs_to_jiffies(10));
3820 case USB_OTG_POWER_OFF:/*otg off*/
3821 di->charge_otg = USB_OTG_POWER_OFF;
3822 queue_delayed_work(di->wq, &di->otg_check_work,
3823 msecs_to_jiffies(10));
3831 static irqreturn_t rk81x_vbat_lo_irq(int irq, void *bat)
3833 pr_info("\n------- %s:lower power warning!\n", __func__);
3835 rk_send_wakeup_key();
3840 static irqreturn_t rk81x_vbat_plug_in(int irq, void *bat)
3842 pr_info("\n------- %s:irq = %d\n", __func__, irq);
3843 rk_send_wakeup_key();
3847 static irqreturn_t rk81x_vbat_plug_out(int irq, void *bat)
3849 pr_info("\n-------- %s:irq = %d\n", __func__, irq);
3850 rk_send_wakeup_key();
3854 static irqreturn_t rk81x_vbat_charge_ok(int irq, void *bat)
3856 struct rk81x_battery *di = (struct rk81x_battery *)bat;
3858 pr_info("\n---------- %s:irq = %d\n", __func__, irq);
3859 di->finish_sig_base = get_runtime_sec();
3860 rk_send_wakeup_key();
3864 static irqreturn_t rk81x_vbat_dc_det(int irq, void *bat)
3866 struct rk81x_battery *di = (struct rk81x_battery *)bat;
3868 queue_delayed_work(di->wq,
3869 &di->dc_det_check_work,
3870 msecs_to_jiffies(10));
3871 rk_send_wakeup_key();
3876 static int rk81x_bat_sysfs_init(struct rk81x_battery *di)
3881 for (i = 0; i < ARRAY_SIZE(rk818_bat_attr); i++) {
3882 ret = sysfs_create_file(&di->bat.dev->kobj,
3883 &rk818_bat_attr[i].attr);
3885 dev_err(di->dev, "create battery node(%s) error\n",
3886 rk818_bat_attr[i].attr.name);
3892 static void rk81x_bat_irq_init(struct rk81x_battery *di)
3894 int plug_in_irq, plug_out_irq, chrg_ok_irq, vb_lo_irq;
3896 struct rk818 *chip = di->rk818;
3898 #if defined(CONFIG_X86_INTEL_SOFIA)
3899 vb_lo_irq = chip->irq_base + RK818_IRQ_VB_LO;
3900 chrg_ok_irq = chip->irq_base + RK818_IRQ_CHG_OK;
3901 plug_in_irq = chip->irq_base + RK818_IRQ_PLUG_IN;
3902 plug_out_irq = chip->irq_base + RK818_IRQ_PLUG_OUT;
3904 vb_lo_irq = irq_create_mapping(chip->irq_domain, RK818_IRQ_VB_LO);
3905 plug_in_irq = irq_create_mapping(chip->irq_domain, RK818_IRQ_PLUG_IN);
3906 plug_out_irq = irq_create_mapping(chip->irq_domain, RK818_IRQ_PLUG_OUT);
3907 chrg_ok_irq = irq_create_mapping(chip->irq_domain, RK818_IRQ_CHG_OK);
3910 ret = request_threaded_irq(vb_lo_irq, NULL, rk81x_vbat_lo_irq,
3911 IRQF_TRIGGER_HIGH, "rk818_vbatlow", di);
3913 dev_err(chip->dev, "vb_lo_irq request failed!\n");
3915 di->irq = vb_lo_irq;
3916 enable_irq_wake(di->irq);
3918 ret = request_threaded_irq(plug_in_irq, NULL, rk81x_vbat_plug_in,
3919 IRQF_TRIGGER_RISING, "rk81x_vbat_plug_in",
3922 dev_err(chip->dev, "plug_in_irq request failed!\n");
3924 ret = request_threaded_irq(plug_out_irq, NULL, rk81x_vbat_plug_out,
3925 IRQF_TRIGGER_FALLING, "rk81x_vbat_plug_out",
3928 dev_err(chip->dev, "plug_out_irq request failed!\n");
3930 ret = request_threaded_irq(chrg_ok_irq, NULL, rk81x_vbat_charge_ok,
3931 IRQF_TRIGGER_RISING, "rk81x_vbat_charge_ok",
3934 dev_err(chip->dev, "chrg_ok_irq request failed!\n");
3937 static void rk81x_bat_info_init(struct rk81x_battery *di,
3941 unsigned long time_base = POWER_ON_SEC_BASE;
3943 rk81x_bat_read(di, RK818_VB_MON_REG, &val, 1);
3944 if (val & PLUG_IN_STS)
3945 rk81x_bat_set_power_supply_state(di, USB_CHARGER);
3947 di->cell.config = di->pdata->cell_cfg;
3948 di->design_capacity = di->pdata->cell_cfg->design_capacity;
3949 di->qmax = di->pdata->cell_cfg->design_qmax;
3950 di->early_resume = 1;
3951 di->psy_status = POWER_SUPPLY_STATUS_DISCHARGING;
3952 di->bat_res = di->pdata->sense_resistor_mohm;
3953 di->dischrg_algorithm_mode = DISCHRG_NORMAL_MODE;
3954 di->last_zero_mode_dsoc = DEF_LAST_ZERO_MODE_SOC;
3955 di->slp_chrg_status = rk81x_bat_get_chrg_status(di);
3956 di->loader_charged = loader_charged;
3957 di->chrg_finish_base = time_base;
3958 di->power_on_base = time_base;
3959 di->plug_in_base = time_base;
3960 di->plug_out_base = time_base;
3961 di->finish_sig_base = time_base;
3962 di->fcc = rk81x_bat_get_fcc(di);
3965 static void rk81x_bat_dc_det_init(struct rk81x_battery *di,
3966 struct device_node *np)
3968 struct device *dev = di->dev;
3969 enum of_gpio_flags flags;
3972 di->dc_det_pin = of_get_named_gpio_flags(np, "dc_det_gpio", 0, &flags);
3973 if (di->dc_det_pin == -EPROBE_DEFER) {
3974 dev_err(dev, "dc_det_gpio error\n");
3978 if (gpio_is_valid(di->dc_det_pin)) {
3979 di->dc_det_level = (flags & OF_GPIO_ACTIVE_LOW) ?
3980 RK818_DC_IN : RK818_DC_OUT;
3981 di->dc_det_irq = gpio_to_irq(di->dc_det_pin);
3983 ret = request_irq(di->dc_det_irq, rk81x_vbat_dc_det,
3984 IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
3985 "rk81x_dc_det", di);
3987 dev_err(di->dev, "rk818_dc_det_irq request failed!\n");
3990 enable_irq_wake(di->dc_det_irq);
3995 gpio_free(di->dc_det_pin);
3998 static int rk81x_bat_get_suspend_sec(struct rk81x_battery *di)
4003 struct timespec tv = {
4004 .tv_nsec = NSEC_PER_SEC >> 1,
4006 struct rtc_device *rtc = rtc_class_open(CONFIG_RTC_HCTOSYS_DEVICE);
4008 err = rtc_read_time(rtc, &tm);
4010 dev_err(rtc->dev.parent,
4011 "hctosys: unable to read the hardware clock\n");
4014 err = rtc_valid_tm(&tm);
4016 dev_err(rtc->dev.parent,
4017 "hctosys: invalid date/time\n");
4021 rtc_tm_to_time(&tm, &tv.tv_sec);
4022 delta_sec = tv.tv_sec - di->suspend_rtc_base.tv_sec;
4024 return (delta_sec > 0) ? delta_sec : 0;
4028 static int rk81x_bat_parse_dt(struct rk81x_battery *di)
4030 struct device_node *np;
4031 struct battery_platform_data *pdata;
4032 struct cell_config *cell_cfg;
4033 struct ocv_config *ocv_cfg;
4034 struct property *prop;
4035 struct rk818 *rk818 = di->rk818;
4036 struct device *dev = di->dev;
4041 np = of_find_node_by_name(rk818->dev->of_node, "battery");
4043 dev_err(dev, "battery node not found!\n");
4047 pdata = devm_kzalloc(rk818->dev, sizeof(*pdata), GFP_KERNEL);
4051 cell_cfg = devm_kzalloc(rk818->dev, sizeof(*cell_cfg), GFP_KERNEL);
4055 ocv_cfg = devm_kzalloc(rk818->dev, sizeof(*ocv_cfg), GFP_KERNEL);
4059 prop = of_find_property(np, "ocv_table", &length);
4061 dev_err(dev, "ocv_table not found!\n");
4064 pdata->ocv_size = length / sizeof(u32);
4065 if (pdata->ocv_size <= 0) {
4066 dev_err(dev, "invalid ocv table\n");
4070 size = sizeof(*pdata->battery_ocv) * pdata->ocv_size;
4072 pdata->battery_ocv = devm_kzalloc(rk818->dev, size, GFP_KERNEL);
4073 if (!pdata->battery_ocv)
4076 ret = of_property_read_u32_array(np, "ocv_table", pdata->battery_ocv,
4081 /******************** charger param ****************************/
4082 ret = of_property_read_u32(np, "max_chrg_currentmA", &out_value);
4084 dev_err(dev, "max_chrg_currentmA not found!\n");
4085 out_value = DEFAULT_CHRG_CUR;
4087 pdata->max_charger_currentmA = out_value;
4089 ret = of_property_read_u32(np, "max_input_currentmA", &out_value);
4091 dev_err(dev, "max_charger_ilimitmA not found!\n");
4092 out_value = DEFAULT_INPUT_CUR;
4094 pdata->max_charger_ilimitmA = out_value;
4096 ret = of_property_read_u32(np, "bat_res", &out_value);
4098 dev_err(dev, "bat_res not found!\n");
4099 out_value = DEFAULT_BAT_RES;
4101 pdata->sense_resistor_mohm = out_value;
4103 ret = of_property_read_u32(np, "max_charge_voltagemV", &out_value);
4105 dev_err(dev, "max_charge_voltagemV not found!\n");
4106 out_value = DEFAULT_CHRG_VOL;
4108 pdata->max_charger_voltagemV = out_value;
4110 ret = of_property_read_u32(np, "design_capacity", &out_value);
4112 dev_err(dev, "design_capacity not found!\n");
4115 cell_cfg->design_capacity = out_value;
4117 ret = of_property_read_u32(np, "design_qmax", &out_value);
4119 dev_err(dev, "design_qmax not found!\n");
4122 cell_cfg->design_qmax = out_value;
4124 ret = of_property_read_u32(np, "sleep_enter_current", &out_value);
4126 dev_err(dev, "sleep_enter_current not found!\n");
4127 out_value = DEFAULT_SLP_ENTER_CUR;
4129 ocv_cfg->sleep_enter_current = out_value;
4131 ret = of_property_read_u32(np, "sleep_exit_current", &out_value);
4133 dev_err(dev, "sleep_exit_current not found!\n");
4134 out_value = DEFAULT_SLP_EXIT_CUR;
4136 ocv_cfg->sleep_exit_current = out_value;
4138 ret = of_property_read_u32(np, "power_off_thresd", &out_value);
4140 dev_warn(dev, "power_off_thresd not found!\n");
4141 out_value = PWR_OFF_THRESD;
4143 pdata->power_off_thresd = out_value;
4145 of_property_read_u32(np, "chrg_diff_voltagemV", &pdata->chrg_diff_vol);
4146 of_property_read_u32(np, "virtual_power", &di->fg_drv_mode);
4147 di->fg_drv_mode = di->fg_drv_mode ? TEST_POWER_MODE : FG_NORMAL_MODE;
4149 /************* charger support adp types **********************/
4150 ret = of_property_read_u32(np, "support_usb_adp", &support_usb_adp);
4151 ret = of_property_read_u32(np, "support_dc_adp", &support_dc_adp);
4152 ret = of_property_read_u32(np, "power_dc2otg", &power_dc2otg);
4154 if (!support_usb_adp && !support_dc_adp) {
4155 dev_err(dev, "miss both: usb_adp and dc_adp,default:usb_adp!\n");
4156 support_usb_adp = 1;
4159 /*if (support_dc_adp)*/
4160 rk81x_bat_dc_det_init(di, np);
4162 cell_cfg->ocv = ocv_cfg;
4163 pdata->cell_cfg = cell_cfg;
4166 DBG("\nthe battery dts info dump:\n"
4168 "max_input_currentmA:%d\n"
4169 "max_chrg_currentmA:%d\n"
4170 "max_charge_voltagemV:%d\n"
4171 "design_capacity:%d\n"
4173 "sleep_enter_current:%d\n"
4174 "sleep_exit_current:%d\n"
4175 "support_usb_adp:%d\n"
4176 "support_dc_adp:%d\n"
4177 "power_off_thresd:%d\n",
4178 pdata->sense_resistor_mohm, pdata->max_charger_ilimitmA,
4179 pdata->max_charger_currentmA, pdata->max_charger_voltagemV,
4180 cell_cfg->design_capacity, cell_cfg->design_qmax,
4181 cell_cfg->ocv->sleep_enter_current,
4182 cell_cfg->ocv->sleep_exit_current,
4183 support_usb_adp, support_dc_adp, pdata->power_off_thresd);
4189 static int rk81x_bat_parse_dt(struct rk81x_battery *di)
4195 static int rk81x_battery_probe(struct platform_device *pdev)
4197 struct rk818 *chip = dev_get_drvdata(pdev->dev.parent);
4198 struct rk81x_battery *di;
4201 di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
4205 di->dev = &pdev->dev;
4206 platform_set_drvdata(pdev, di);
4208 ret = rk81x_bat_parse_dt(di);
4210 dev_err(&pdev->dev, "rk81x battery parse dt failed!\n");
4214 rk81x_bat_info_init(di, chip);
4215 if (!is_rk81x_bat_exist(di)) {
4216 dev_info(di->dev, "not battery, enter test power mode\n");
4217 di->fg_drv_mode = TEST_POWER_MODE;
4220 ret = rk81x_bat_power_supply_init(di);
4222 dev_err(&pdev->dev, "rk81x power supply register failed!\n");
4226 rk81x_bat_irq_init(di);
4227 rk81x_bat_sysfs_init(di);
4229 rk81x_bat_fg_init(di);
4230 wake_lock_init(&di->resume_wake_lock, WAKE_LOCK_SUSPEND,
4232 rk81x_bat_flatzone_vol_init(di);
4234 #if defined(CONFIG_X86_INTEL_SOFIA)
4235 di->usb_phy = usb_get_phy(USB_PHY_TYPE_USB2);
4236 if (IS_ERR_OR_NULL(di->usb_phy)) {
4237 dev_err(di->dev, "get usb phy failed\n");
4238 return PTR_ERR(di->usb_phy);
4240 di->usb_nb.notifier_call = rk81x_battery_usb_notifier;
4241 ret = usb_register_notifier(di->usb_phy, &di->usb_nb);
4243 dev_err(di->dev, "registr usb phy notification failed\n");
4244 INIT_DELAYED_WORK(&di->usb_phy_delay_work,
4245 rk81x_battery_usb_notifier_delayed_work);
4248 rk81x_battery_register_fb_notify(di);
4249 di->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM | WQ_FREEZABLE,
4250 "rk81x-battery-work");
4251 INIT_DELAYED_WORK(&di->battery_monitor_work, rk81x_battery_work);
4252 INIT_DELAYED_WORK(&di->chrg_term_mode_switch_work,
4253 rk81x_chrg_term_mode_switch_work);
4255 queue_delayed_work(di->wq, &di->battery_monitor_work,
4256 msecs_to_jiffies(TIMER_MS_COUNTS * 5));
4258 #if defined(CONFIG_ARCH_ROCKCHIP)
4259 INIT_DELAYED_WORK(&di->otg_check_work,
4260 rk81x_battery_otg_delay_work);
4261 INIT_DELAYED_WORK(&di->ac_usb_check_work,
4262 rk81x_battery_acusb_delay_work);
4263 INIT_DELAYED_WORK(&di->dc_det_check_work,
4264 rk81x_battery_dc_delay_work);
4266 queue_delayed_work(di->wq, &di->dc_det_check_work,
4267 msecs_to_jiffies(TIMER_MS_COUNTS * 5));
4269 di->battery_nb.notifier_call = rk81x_bat_usb_notifier_call;
4270 rk_bc_detect_notifier_register(&di->battery_nb, &di->charge_otg);
4272 dev_info(di->dev, "battery driver version %s\n", DRIVER_VERSION);
4277 static int rk81x_battery_suspend(struct platform_device *dev,
4280 struct rk81x_battery *di = platform_get_drvdata(dev);
4282 /*while otg and dc both plugin*/
4283 rk81x_bat_set_bit(di, NT_STS_MSK_REG2, CHRG_CVTLMT_INT);
4285 di->slp_psy_status = rk81x_chrg_online(di);
4286 di->chrg_status = rk81x_bat_get_chrg_status(di);
4287 di->slp_chrg_status = rk81x_bat_get_chrg_status(di);
4288 di->suspend_charge_current = rk81x_bat_get_avg_current(di);
4289 di->dischrg_save_sec += rk81x_bat_save_dischrg_sec(di);
4290 di->dischrg_normal_base = 0;
4291 di->dischrg_emu_base = 0;
4292 do_gettimeofday(&di->suspend_rtc_base);
4294 if (!rk81x_chrg_online(di)) {
4295 di->chrg_save_sec += rk81x_bat_save_chrg_sec(di);
4296 di->chrg_normal_base = 0;
4297 di->chrg_emu_base = 0;
4298 di->chrg_term_base = 0;
4299 di->chrg_finish_base = 0;
4304 pr_info("battery suspend dl=%d rl=%d c=%d v=%d at=%ld st=0x%x chg=%d\n",
4305 di->dsoc, di->rsoc, di->suspend_charge_current, di->voltage,
4306 di->suspend_time_sum, di->chrg_status, di->slp_psy_status);
4311 static int rk81x_battery_resume(struct platform_device *dev)
4313 struct rk81x_battery *di = platform_get_drvdata(dev);
4314 int pwroff_thresd = di->pdata->power_off_thresd;
4320 /*while otg and dc both plugin*/
4321 rk81x_bat_clr_bit(di, NT_STS_MSK_REG2, CHRG_CVTLMT_INT);
4323 di->discharge_smooth_status = true;
4324 di->charge_smooth_status = true;
4326 vol = rk81x_bat_get_vol(di);
4327 if (vol < INVALID_VOL_THRESD) {
4328 dev_err(di->dev, "invalid voltage :%d", vol);
4333 di->current_avg = rk81x_bat_get_avg_current(di);
4334 di->relax_voltage = rk81x_bat_get_relax_vol(di);
4335 di->est_ocv_vol = rk81x_bat_est_ocv_vol(di);
4336 di->est_ocv_soc = rk81x_bat_est_ocv_soc(di);
4337 delta_time = rk81x_bat_get_suspend_sec(di);
4338 di->suspend_time_sum += delta_time;
4339 #if defined(CONFIG_ARCH_ROCKCHIP)
4340 di->remain_capacity = rk81x_bat_get_realtime_capacity(di);
4343 if (di->slp_psy_status) {
4344 time_step = CHRG_TIME_STEP;
4346 if (di->voltage <= pwroff_thresd + 50)
4347 time_step = DISCHRG_TIME_STEP_0;
4349 time_step = DISCHRG_TIME_STEP_1;
4352 pr_info("battery resume c=%d v=%d ev=%d rv=%d dt=%d at=%ld chg=%d\n",
4353 di->current_avg, di->voltage, di->est_ocv_vol,
4354 di->relax_voltage, delta_time, di->suspend_time_sum,
4355 di->slp_psy_status);
4357 if (di->suspend_time_sum > time_step) {
4358 delta_soc = rk81x_bat_update_resume_state(di);
4360 di->suspend_time_sum = 0;
4363 if ((!rk81x_chrg_online(di) && di->voltage <= pwroff_thresd) ||
4364 rk81x_chrg_online(di))
4365 wake_lock_timeout(&di->resume_wake_lock, 5 * HZ);
4369 static int rk81x_battery_remove(struct platform_device *dev)
4371 struct rk81x_battery *di = platform_get_drvdata(dev);
4373 cancel_delayed_work_sync(&di->battery_monitor_work);
4377 static void rk81x_battery_shutdown(struct platform_device *dev)
4379 struct rk81x_battery *di = platform_get_drvdata(dev);
4381 cancel_delayed_work_sync(&di->battery_monitor_work);
4382 rk_bc_detect_notifier_unregister(&di->battery_nb);
4384 if (BASE_TO_MIN(di->power_on_base) <= REBOOT_INTER_MIN)
4385 rk81x_bat_check_reboot(di);
4387 rk81x_bat_save_reboot_cnt(di, 0);
4388 rk81x_chrg_term_mode_set(di, CHRG_TERM_ANA_SIGNAL);
4391 static struct platform_driver rk81x_battery_driver = {
4393 .name = "rk818-battery",
4394 .owner = THIS_MODULE,
4397 .probe = rk81x_battery_probe,
4398 .remove = rk81x_battery_remove,
4399 .suspend = rk81x_battery_suspend,
4400 .resume = rk81x_battery_resume,
4401 .shutdown = rk81x_battery_shutdown,
4404 static int __init battery_init(void)
4406 return platform_driver_register(&rk81x_battery_driver);
4409 fs_initcall_sync(battery_init);
4410 static void __exit battery_exit(void)
4412 platform_driver_unregister(&rk81x_battery_driver);
4414 module_exit(battery_exit);
4416 MODULE_LICENSE("GPL");
4417 MODULE_ALIAS("platform:rk818-battery");
4418 MODULE_AUTHOR("ROCKCHIP");