2 * RockChip ADC Battery Driver
3 * Copyright (C) 2012, RockChip
5 * Authors: xuhuicong <xhc@rock-chips.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
14 #include <linux/gpio.h>
15 #include <linux/of_gpio.h>
16 #include <linux/platform_device.h>
17 #include <linux/power_supply.h>
18 #include <linux/workqueue.h>
19 #include <linux/kernel.h>
20 #include <linux/i2c.h>
21 #include <linux/module.h>
22 #include <linux/delay.h>
23 #include <linux/power/cw2015_battery.h>
24 #include <linux/time.h>
25 #include <linux/interrupt.h>
26 #include <linux/irq.h>
27 #include <linux/slab.h>
29 #define CW2015_GPIO_HIGH 1
30 #define CW2015_GPIO_LOW 0
32 #define REG_VERSION 0x0
35 #define REG_RRT_ALERT 0x6
36 #define REG_CONFIG 0x8
38 #define REG_BATINFO 0x10
40 #define MODE_SLEEP_MASK (0x3<<6)
41 #define MODE_SLEEP (0x3<<6)
42 #define MODE_NORMAL (0x0<<6)
43 #define MODE_QUICK_START (0x3<<4)
44 #define MODE_RESTART (0xf<<0)
46 #define CONFIG_UPDATE_FLG (0x1<<1)
47 #define ATHD (0x0<<3) //ATHD = 0%
49 #define CW_I2C_SPEED 100000 // default i2c speed set 100khz
50 #define BATTERY_UP_MAX_CHANGE 420 // the max time allow battery change quantity
51 #define BATTERY_DOWN_CHANGE 60 // the max time allow battery change quantity
52 #define BATTERY_DOWN_MIN_CHANGE_RUN 30 // the min time allow battery change quantity when run
53 #define BATTERY_DOWN_MIN_CHANGE_SLEEP 1800 // the min time allow battery change quantity when run 30min
55 #define BATTERY_DOWN_MAX_CHANGE_RUN_AC_ONLINE 3600
57 #define NO_STANDARD_AC_BIG_CHARGE_MODE 1
58 // #define SYSTEM_SHUTDOWN_VOLTAGE 3400000 //set system shutdown voltage related in battery info.
59 #define BAT_LOW_INTERRUPT 1
61 #define USB_CHARGER_MODE 1
62 #define AC_CHARGER_MODE 2
64 extern int dwc_otg_check_dpdm(void);
65 extern int get_gadget_connect_flag(void);
66 extern int dwc_vbus_status( void );
69 struct i2c_client *client;
70 struct workqueue_struct *battery_workqueue;
71 struct delayed_work battery_delay_work;
72 struct delayed_work dc_wakeup_work;
73 struct delayed_work bat_low_wakeup_work;
74 struct cw_bat_platform_data plat_data;
76 struct power_supply rk_bat;
77 struct power_supply rk_ac;
78 struct power_supply rk_usb;
80 long sleep_time_capacity_change; // the sleep time from capacity change to present, it will set 0 when capacity change
81 long run_time_capacity_change;
83 long sleep_time_charge_start; // the sleep time from insert ac to present, it will set 0 when insert ac
84 long run_time_charge_start;
89 int charger_init_mode;
99 static int i2c_master_reg8_send(const struct i2c_client *client, const char reg, const char *buf, int count, int scl_rate)
101 struct i2c_adapter *adap=client->adapter;
104 char *tx_buf = (char *)kzalloc(count + 1, GFP_KERNEL);
108 memcpy(tx_buf+1, buf, count);
110 msg.addr = client->addr;
111 msg.flags = client->flags;
113 msg.buf = (char *)tx_buf;
114 msg.scl_rate = scl_rate;
116 ret = i2c_transfer(adap, &msg, 1);
118 return (ret == 1) ? count : ret;
122 static int i2c_master_reg8_recv(const struct i2c_client *client, const char reg, char *buf, int count, int scl_rate)
124 struct i2c_adapter *adap=client->adapter;
125 struct i2c_msg msgs[2];
129 msgs[0].addr = client->addr;
130 msgs[0].flags = client->flags;
132 msgs[0].buf = ®_buf;
133 msgs[0].scl_rate = scl_rate;
135 msgs[1].addr = client->addr;
136 msgs[1].flags = client->flags | I2C_M_RD;
138 msgs[1].buf = (char *)buf;
139 msgs[1].scl_rate = scl_rate;
141 ret = i2c_transfer(adap, msgs, 2);
143 return (ret == 2)? count : ret;
146 static int cw_read(struct i2c_client *client, u8 reg, u8 buf[])
149 ret = i2c_master_reg8_recv(client, reg, buf, 1, CW_I2C_SPEED);
153 static int cw_write(struct i2c_client *client, u8 reg, u8 const buf[])
156 ret = i2c_master_reg8_send(client, reg, buf, 1, CW_I2C_SPEED);
160 static int cw_read_word(struct i2c_client *client, u8 reg, u8 buf[])
163 ret = i2c_master_reg8_recv(client, reg, buf, 2, CW_I2C_SPEED);
168 static int cw_write_word(struct i2c_client *client, u8 reg, u8 const buf[])
171 ret = i2c_master_reg8_send(client, reg, buf, 2, CW_I2C_SPEED);
178 static int cw_update_config_info(struct cw_battery *cw_bat)
185 dev_info(&cw_bat->client->dev, "func: %s-------\n", __func__);
187 /* make sure no in sleep mode */
188 ret = cw_read(cw_bat->client, REG_MODE, ®_val);
193 if((reg_val & MODE_SLEEP_MASK) == MODE_SLEEP) {
194 dev_err(&cw_bat->client->dev, "Error, device in sleep mode, cannot update battery info\n");
198 /* update new battery info */
199 for (i = 0; i < SIZE_BATINFO; i++) {
200 dev_info(&cw_bat->client->dev, "cw_bat->plat_data.cw_bat_config_info[%d] = 0x%x\n", i, \
201 cw_bat->plat_data.cw_bat_config_info[i]);
202 ret = cw_write(cw_bat->client, REG_BATINFO + i, (u8 *)&cw_bat->plat_data.cw_bat_config_info[i]);
208 /* readback & check */
209 for (i = 0; i < SIZE_BATINFO; i++) {
210 ret = cw_read(cw_bat->client, REG_BATINFO + i, ®_val);
211 if (reg_val != cw_bat->plat_data.cw_bat_config_info[i])
215 /* set cw2015/cw2013 to use new battery info */
216 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
220 reg_val |= CONFIG_UPDATE_FLG; /* set UPDATE_FLAG */
221 reg_val &= 0x07; /* clear ATHD */
222 reg_val |= ATHD; /* set ATHD */
223 ret = cw_write(cw_bat->client, REG_CONFIG, ®_val);
227 /* check 2015/cw2013 for ATHD & update_flag */
228 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
232 if (!(reg_val & CONFIG_UPDATE_FLG)) {
233 dev_info(&cw_bat->client->dev, "update flag for new battery info have not set..\n");
236 if ((reg_val & 0xf8) != ATHD) {
237 dev_info(&cw_bat->client->dev, "the new ATHD have not set..\n");
241 reset_val &= ~(MODE_RESTART);
242 reg_val = reset_val | MODE_RESTART;
243 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
248 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
255 static int cw_init(struct cw_battery *cw_bat)
259 u8 reg_val = MODE_SLEEP;
261 ret = cw_read(cw_bat->client, REG_MODE, ®_val);
265 if ((reg_val & MODE_SLEEP_MASK) == MODE_SLEEP) {
266 reg_val = MODE_NORMAL;
267 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
272 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
276 if ((reg_val & 0xf8) != ATHD) {
277 dev_info(&cw_bat->client->dev, "the new ATHD have not set\n");
278 reg_val &= 0x07; /* clear ATHD */
279 reg_val |= ATHD; /* set ATHD */
280 ret = cw_write(cw_bat->client, REG_CONFIG, ®_val);
285 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
289 if (!(reg_val & CONFIG_UPDATE_FLG)) {
290 dev_info(&cw_bat->client->dev, "update flag for new battery info have not set\n");
291 ret = cw_update_config_info(cw_bat);
295 for(i = 0; i < SIZE_BATINFO; i++) {
296 ret = cw_read(cw_bat->client, (REG_BATINFO + i), ®_val);
300 if (cw_bat->plat_data.cw_bat_config_info[i] != reg_val)
304 if (i != SIZE_BATINFO) {
305 dev_info(&cw_bat->client->dev, "update flag for new battery info have not set\n");
306 ret = cw_update_config_info(cw_bat);
312 for (i = 0; i < 30; i++) {
313 ret = cw_read(cw_bat->client, REG_SOC, ®_val);
316 else if (reg_val <= 0x64)
321 dev_err(&cw_bat->client->dev, "cw2015/cw2013 input unvalid power error\n");
325 reg_val = MODE_SLEEP;
326 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
327 dev_info(&cw_bat->client->dev, "report battery capacity error");
333 static void cw_update_time_member_charge_start(struct cw_battery *cw_bat)
340 new_run_time = ts.tv_sec;
342 get_monotonic_boottime(&ts);
343 new_sleep_time = ts.tv_sec - new_run_time;
345 cw_bat->run_time_charge_start = new_run_time;
346 cw_bat->sleep_time_charge_start = new_sleep_time;
349 static void cw_update_time_member_capacity_change(struct cw_battery *cw_bat)
356 new_run_time = ts.tv_sec;
358 get_monotonic_boottime(&ts);
359 new_sleep_time = ts.tv_sec - new_run_time;
361 cw_bat->run_time_capacity_change = new_run_time;
362 cw_bat->sleep_time_capacity_change = new_sleep_time;
365 static int cw_quickstart(struct cw_battery *cw_bat)
368 u8 reg_val = MODE_QUICK_START;
370 ret = cw_write(cw_bat->client, REG_MODE, ®_val); //(MODE_QUICK_START | MODE_NORMAL)); // 0x30
372 dev_err(&cw_bat->client->dev, "Error quick start1\n");
376 reg_val = MODE_NORMAL;
377 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
379 dev_err(&cw_bat->client->dev, "Error quick start2\n");
385 static int cw_get_capacity(struct cw_battery *cw_bat)
394 long capacity_or_aconline_time;
397 static int if_quickstart = 0;
398 static int jump_flag =0;
399 static int reset_loop =0;
404 ret = cw_read(cw_bat->client, REG_SOC, ®_val);
405 //ret = cw_read_word(cw_bat->client, REG_SOC, reg_val);
408 cw_capacity = reg_val;
410 if ((cw_capacity == 0)&&(if_quickstart ==0)) {
411 dev_info(&cw_bat->client->dev, "the cw201x capacity is 0 !!!!!!!, funciton: %s, line: %d\n", __func__, __LINE__);
413 reset_val = MODE_SLEEP;
414 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
417 reset_val = MODE_NORMAL;
419 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
422 dev_info(&cw_bat->client->dev, "report battery capacity error1");
423 // ret = cw_update_config_info(cw_bat);
429 dev_dbg(&cw_bat->client->dev, "the cw201x capacity is %d, funciton: %s\n", cw_capacity, __func__);
431 if ((cw_capacity < 0) || (cw_capacity > 100)) {
432 dev_err(&cw_bat->client->dev, "get cw_capacity error; cw_capacity = %d\n", cw_capacity);
437 reset_val = MODE_SLEEP;
438 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
441 reset_val = MODE_NORMAL;
443 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
446 dev_info(&cw_bat->client->dev, "report battery capacity error");
447 ret = cw_update_config_info(cw_bat);
460 new_run_time = ts.tv_sec;
462 get_monotonic_boottime(&ts);
463 new_sleep_time = ts.tv_sec - new_run_time;
465 if (((cw_bat->charger_mode > 0) && (cw_capacity <= (cw_bat->capacity - 1)) && (cw_capacity > (cw_bat->capacity - 9)))
466 || ((cw_bat->charger_mode == 0) && (cw_capacity == (cw_bat->capacity + 1)))) { // modify battery level swing
468 if (!(cw_capacity == 0 && cw_bat->capacity <= 2)) {
469 cw_capacity = cw_bat->capacity;
473 if ((cw_bat->charger_mode > 0) && (cw_capacity >= 95) && (cw_capacity <= cw_bat->capacity)) { // avoid no charge full
475 capacity_or_aconline_time = (cw_bat->sleep_time_capacity_change > cw_bat->sleep_time_charge_start) ? cw_bat->sleep_time_capacity_change : cw_bat->sleep_time_charge_start;
476 capacity_or_aconline_time += (cw_bat->run_time_capacity_change > cw_bat->run_time_charge_start) ? cw_bat->run_time_capacity_change : cw_bat->run_time_charge_start;
477 allow_change = (new_sleep_time + new_run_time - capacity_or_aconline_time) / BATTERY_UP_MAX_CHANGE;
478 if (allow_change > 0) {
479 allow_capacity = cw_bat->capacity + allow_change;
480 cw_capacity = (allow_capacity <= 100) ? allow_capacity : 100;
482 } else if (cw_capacity <= cw_bat->capacity) {
483 cw_capacity = cw_bat->capacity;
488 else if ((cw_bat->charger_mode == 0) && (cw_capacity <= cw_bat->capacity ) && (cw_capacity >= 90) && (jump_flag == 1)) { // avoid battery level jump to CW_BAT
489 capacity_or_aconline_time = (cw_bat->sleep_time_capacity_change > cw_bat->sleep_time_charge_start) ? cw_bat->sleep_time_capacity_change : cw_bat->sleep_time_charge_start;
490 capacity_or_aconline_time += (cw_bat->run_time_capacity_change > cw_bat->run_time_charge_start) ? cw_bat->run_time_capacity_change : cw_bat->run_time_charge_start;
491 allow_change = (new_sleep_time + new_run_time - capacity_or_aconline_time) / BATTERY_DOWN_CHANGE;
492 if (allow_change > 0) {
493 allow_capacity = cw_bat->capacity - allow_change;
494 if (cw_capacity >= allow_capacity){
498 cw_capacity = (allow_capacity <= 100) ? allow_capacity : 100;
500 } else if (cw_capacity <= cw_bat->capacity) {
501 cw_capacity = cw_bat->capacity;
505 if ((cw_capacity == 0) && (cw_bat->capacity > 1)) { // avoid battery level jump to 0% at a moment from more than 2%
506 allow_change = ((new_run_time - cw_bat->run_time_capacity_change) / BATTERY_DOWN_MIN_CHANGE_RUN);
507 allow_change += ((new_sleep_time - cw_bat->sleep_time_capacity_change) / BATTERY_DOWN_MIN_CHANGE_SLEEP);
509 allow_capacity = cw_bat->capacity - allow_change;
510 cw_capacity = (allow_capacity >= cw_capacity) ? allow_capacity: cw_capacity;
511 dev_info(&cw_bat->client->dev, "report GGIC POR happened");
512 reset_val = MODE_SLEEP;
513 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
516 reset_val = MODE_NORMAL;
518 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
521 dev_info(&cw_bat->client->dev, "report battery capacity error");
522 ret = cw_update_config_info(cw_bat);
525 dev_info(&cw_bat->client->dev, "report battery capacity jump 0 ");
529 if((cw_bat->charger_mode > 0) &&(cw_capacity == 0))
531 charge_time = new_sleep_time + new_run_time - cw_bat->sleep_time_charge_start - cw_bat->run_time_charge_start;
532 if ((charge_time > BATTERY_DOWN_MAX_CHANGE_RUN_AC_ONLINE) && (if_quickstart == 0)) {
533 //cw_quickstart(cw_bat); // if the cw_capacity = 0 the cw2015 will qstrt/
534 reset_val = MODE_SLEEP;
535 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
538 reset_val = MODE_NORMAL;
540 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
543 dev_info(&cw_bat->client->dev, "report battery capacity error");
544 ret = cw_update_config_info(cw_bat);
547 dev_info(&cw_bat->client->dev, "report battery capacity still 0 if in changing");
550 } else if ((if_quickstart == 1)&&(cw_bat->charger_mode == 0)) {
557 if (gpio_is_valid(cw_bat->plat_data.chg_ok_pin)) {
558 if(gpio_get_value(cw_bat->plat_data.chg_ok_pin) != cw_bat->plat_data.chg_ok_level) {
559 if (cw_capacity == 100) {
563 if (cw_bat->charger_mode > 0) {
570 #ifdef SYSTEM_SHUTDOWN_VOLTAGE
571 if ((cw_bat->charger_mode == 0) && (cw_capacity <= 10) && (cw_bat->voltage <= SYSTEM_SHUTDOWN_VOLTAGE)){
572 if (if_quickstart == 10){
573 cw_quickstart(cw_bat);
576 } else if (if_quickstart <= 10)
577 if_quickstart =if_quickstart+2;
578 dev_info(&cw_bat->client->dev, "the cw201x voltage is less than SYSTEM_SHUTDOWN_VOLTAGE !!!!!!!, funciton: %s, line: %d\n", __func__, __LINE__);
579 } else if ((cw_bat->charger_mode > 0)&& (if_quickstart <= 12)) {
586 static int cw_get_vol(struct cw_battery *cw_bat)
590 u16 value16, value16_1, value16_2, value16_3;
593 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
596 value16 = (reg_val[0] << 8) + reg_val[1];
598 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
601 value16_1 = (reg_val[0] << 8) + reg_val[1];
603 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
606 value16_2 = (reg_val[0] << 8) + reg_val[1];
609 if(value16 > value16_1)
613 value16_1 = value16_3;
616 if(value16_1 > value16_2)
618 value16_3 =value16_1;
619 value16_1 =value16_2;
620 value16_2 =value16_3;
623 if(value16 >value16_1)
627 value16_1 =value16_3;
630 voltage = value16_1 * 305;
632 dev_dbg(&cw_bat->client->dev, "the cw201x voltage=%d,reg_val=%x %x\n",voltage,reg_val[0],reg_val[1]);
636 #ifdef BAT_LOW_INTERRUPT
637 static int cw_get_alt(struct cw_battery *cw_bat)
644 ret = cw_read(cw_bat->client, REG_RRT_ALERT, ®_val);
650 //dev_info(&cw_bat->client->dev, "read RRT %d%%. value16 0x%x\n", alrt, value16);
651 value8 = value8&0x7f;
653 ret = cw_write(cw_bat->client, REG_RRT_ALERT, ®_val);
655 dev_err(&cw_bat->client->dev, "Error clear ALRT\n");
664 static int cw_get_time_to_empty(struct cw_battery *cw_bat)
670 ret = cw_read(cw_bat->client, REG_RRT_ALERT, ®_val);
676 ret = cw_read(cw_bat->client, REG_RRT_ALERT + 1, ®_val);
680 value16 = ((value16 << 8) + reg_val) & 0x1fff;
684 static void rk_bat_update_capacity(struct cw_battery *cw_bat)
688 cw_capacity = cw_get_capacity(cw_bat);
689 if ((cw_capacity >= 0) && (cw_capacity <= 100) && (cw_bat->capacity != cw_capacity)) {
690 cw_bat->capacity = cw_capacity;
691 cw_bat->bat_change = 1;
692 cw_update_time_member_capacity_change(cw_bat);
694 if (cw_bat->capacity == 0)
695 dev_info(&cw_bat->client->dev, "report battery capacity 0 and will shutdown if no changing");
702 static void rk_bat_update_vol(struct cw_battery *cw_bat)
705 ret = cw_get_vol(cw_bat);
706 if ((ret >= 0) && (cw_bat->voltage != ret)) {
707 cw_bat->voltage = ret;
708 // cw_bat->bat_change = 1;
712 static void rk_bat_update_status(struct cw_battery *cw_bat)
717 if (cw_bat->charger_mode > 0) {
718 if (cw_bat->capacity >= 100)
719 status=POWER_SUPPLY_STATUS_FULL;
721 status=POWER_SUPPLY_STATUS_CHARGING;
723 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
726 if (cw_bat->status != status) {
727 cw_bat->status = status;
728 cw_bat->bat_change = 1;
733 static void rk_bat_update_time_to_empty(struct cw_battery *cw_bat)
736 ret = cw_get_time_to_empty(cw_bat);
737 if ((ret >= 0) && (cw_bat->time_to_empty != ret)) {
738 cw_bat->time_to_empty = ret;
739 // cw_bat->bat_change = 1;
744 static int rk_ac_update_online(struct cw_battery *cw_bat)
748 if(!gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
749 cw_bat->dc_online = 0;
750 printk("%s cw2015 dc charger but without dc_det_pin,maybe error\n",__func__);
754 if (gpio_get_value(cw_bat->plat_data.dc_det_pin) == cw_bat->plat_data.dc_det_level) {
755 if (cw_bat->dc_online != 1) {
756 cw_update_time_member_charge_start(cw_bat);
757 cw_bat->dc_online = 1;
758 if (cw_bat->charger_mode != AC_CHARGER_MODE)
759 cw_bat->charger_mode = AC_CHARGER_MODE;
764 if (cw_bat->dc_online != 0) {
765 cw_update_time_member_charge_start(cw_bat);
766 cw_bat->dc_online = 0;
767 if (cw_bat->usb_online == 0)
768 cw_bat->charger_mode = 0;
775 static int get_usb_charge_state(struct cw_battery *cw_bat)
781 int gadget_status = get_gadget_connect_flag();
782 int usb_status = dwc_vbus_status();
784 get_monotonic_boottime(&ts);
785 time_from_boot = ts.tv_sec;
787 if (cw_bat->charger_init_mode) {
788 if (usb_status == 1 || usb_status == 2) {
789 cw_bat->charger_init_mode = 0;
790 } else if (time_from_boot < 8) {
791 usb_status = cw_bat->charger_init_mode;
792 } else if (strstr(saved_command_line,"charger")) {
793 cw_bat->charger_init_mode = dwc_otg_check_dpdm();
794 usb_status = cw_bat->charger_init_mode;
797 #ifdef NO_STANDARD_AC_BIG_CHARGE_MODE
798 if (cw_bat->usb_online == 1) {
800 charge_time = time_from_boot - cw_bat->sleep_time_charge_start - cw_bat->run_time_charge_start;
801 if (charge_time > 3) {
802 if (gadget_status == 0 && dwc_vbus_status() == 1) {
809 dev_dbg(&cw_bat->client->dev, "%s usb_status=[%d],cw_bat->charger_mode=[%d],cw_bat->gadget_status=[%d], cw_bat->charger_init_mode = [%d]\n",__func__,usb_status,cw_bat->charger_mode,gadget_status, cw_bat->charger_init_mode);
814 static int rk_usb_update_online(struct cw_battery *cw_bat)
820 usb_status = get_usb_charge_state(cw_bat);
821 if (usb_status == 2) {
822 if (cw_bat->charger_mode != AC_CHARGER_MODE) {
823 cw_bat->charger_mode = AC_CHARGER_MODE;
826 if (gpio_is_valid(cw_bat->plat_data.chg_mode_sel_pin)) {
827 if (gpio_get_value (cw_bat->plat_data.chg_mode_sel_pin) != cw_bat->plat_data.chg_mode_sel_level)
828 gpio_direction_output(cw_bat->plat_data.chg_mode_sel_pin, (cw_bat->plat_data.chg_mode_sel_level==CW2015_GPIO_LOW) ? CW2015_GPIO_LOW : CW2015_GPIO_HIGH);
831 if (cw_bat->usb_online != 1) {
832 cw_bat->usb_online = 1;
833 cw_update_time_member_charge_start(cw_bat);
836 } else if (usb_status == 1) {
837 if ((cw_bat->charger_mode != USB_CHARGER_MODE) && (cw_bat->dc_online == 0)) {
838 cw_bat->charger_mode = USB_CHARGER_MODE;
842 if (gpio_is_valid(cw_bat->plat_data.chg_mode_sel_pin)) {
843 if (gpio_get_value (cw_bat->plat_data.chg_mode_sel_pin) == cw_bat->plat_data.chg_mode_sel_level)
844 gpio_direction_output(cw_bat->plat_data.chg_mode_sel_pin, (cw_bat->plat_data.chg_mode_sel_level==CW2015_GPIO_LOW) ? CW2015_GPIO_HIGH : CW2015_GPIO_LOW);
846 if (cw_bat->usb_online != 1){
847 cw_bat->usb_online = 1;
848 cw_update_time_member_charge_start(cw_bat);
851 } else if (usb_status == 0 && cw_bat->usb_online != 0) {
853 if (gpio_is_valid(cw_bat->plat_data.chg_mode_sel_pin)) {
854 if (gpio_get_value (cw_bat->plat_data.chg_mode_sel_pin == cw_bat->plat_data.chg_mode_sel_level))
855 gpio_direction_output(cw_bat->plat_data.chg_mode_sel_pin, (cw_bat->plat_data.chg_mode_sel_level==CW2015_GPIO_LOW) ? CW2015_GPIO_HIGH : CW2015_GPIO_LOW);
858 if (cw_bat->dc_online == 0)
859 cw_bat->charger_mode = 0;
861 cw_update_time_member_charge_start(cw_bat);
862 cw_bat->usb_online = 0;
869 static void cw_bat_work(struct work_struct *work)
871 struct delayed_work *delay_work;
872 struct cw_battery *cw_bat;
875 delay_work = container_of(work, struct delayed_work, work);
876 cw_bat = container_of(delay_work, struct cw_battery, battery_delay_work);
878 if (cw_bat->plat_data.is_dc_charge == 1) {
879 ret = rk_ac_update_online(cw_bat);
881 power_supply_changed(&cw_bat->rk_ac);
885 if (cw_bat->plat_data.is_usb_charge == 1) {
886 ret = rk_usb_update_online(cw_bat);
888 power_supply_changed(&cw_bat->rk_usb);
889 power_supply_changed(&cw_bat->rk_ac);
894 rk_bat_update_status(cw_bat);
895 rk_bat_update_capacity(cw_bat);
896 rk_bat_update_vol(cw_bat);
897 rk_bat_update_time_to_empty(cw_bat);
899 if (cw_bat->bat_change) {
900 power_supply_changed(&cw_bat->rk_bat);
901 cw_bat->bat_change = 0;
904 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->battery_delay_work, msecs_to_jiffies(1000));
906 dev_dbg(&cw_bat->client->dev, "cw_bat->bat_change = %d, cw_bat->time_to_empty = %d, cw_bat->capacity = %d\n",\
907 cw_bat->bat_change, cw_bat->time_to_empty, cw_bat->capacity);
909 dev_dbg(&cw_bat->client->dev, "cw_bat->voltage = %d, cw_bat->dc_online = %d, cw_bat->usb_online = %d\n",\
910 cw_bat->voltage, cw_bat->dc_online, cw_bat->usb_online);
913 static int rk_usb_get_property (struct power_supply *psy,
914 enum power_supply_property psp,
915 union power_supply_propval *val)
918 struct cw_battery *cw_bat;
920 cw_bat = container_of(psy, struct cw_battery, rk_usb);
922 case POWER_SUPPLY_PROP_ONLINE:
923 // val->intval = cw_bat->usb_online;
924 val->intval = (cw_bat->charger_mode == USB_CHARGER_MODE);
932 static enum power_supply_property rk_usb_properties[] = {
933 POWER_SUPPLY_PROP_ONLINE,
937 static int rk_ac_get_property (struct power_supply *psy,
938 enum power_supply_property psp,
939 union power_supply_propval *val)
942 struct cw_battery *cw_bat;
944 cw_bat = container_of(psy, struct cw_battery, rk_ac);
946 case POWER_SUPPLY_PROP_ONLINE:
947 // val->intval = cw_bat->dc_online;
948 val->intval = (cw_bat->charger_mode == AC_CHARGER_MODE);
956 static enum power_supply_property rk_ac_properties[] = {
957 POWER_SUPPLY_PROP_ONLINE,
960 static int rk_battery_get_property(struct power_supply *psy,
961 enum power_supply_property psp,
962 union power_supply_propval *val)
965 struct cw_battery *cw_bat;
967 cw_bat = container_of(psy, struct cw_battery, rk_bat);
969 case POWER_SUPPLY_PROP_CAPACITY:
970 val->intval = cw_bat->capacity;
972 case POWER_SUPPLY_PROP_STATUS:
973 val->intval = cw_bat->status;
976 case POWER_SUPPLY_PROP_HEALTH:
977 val->intval= POWER_SUPPLY_HEALTH_GOOD;
979 case POWER_SUPPLY_PROP_PRESENT:
980 val->intval = cw_bat->voltage <= 0 ? 0 : 1;
983 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
984 val->intval = cw_bat->voltage;
987 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
988 val->intval = cw_bat->time_to_empty;
991 case POWER_SUPPLY_PROP_TECHNOLOGY:
992 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
1001 static enum power_supply_property rk_battery_properties[] = {
1002 POWER_SUPPLY_PROP_CAPACITY,
1003 POWER_SUPPLY_PROP_STATUS,
1004 POWER_SUPPLY_PROP_HEALTH,
1005 POWER_SUPPLY_PROP_PRESENT,
1006 POWER_SUPPLY_PROP_VOLTAGE_NOW,
1007 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
1008 POWER_SUPPLY_PROP_TECHNOLOGY,
1011 static int cw_bat_gpio_init(struct cw_battery *cw_bat)
1016 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
1017 ret = gpio_request(cw_bat->plat_data.dc_det_pin, NULL);
1019 dev_err(&cw_bat->client->dev, "failed to request dc_det_pin gpio\n");
1020 goto request_dc_det_pin_fail;
1022 ret = gpio_direction_input(cw_bat->plat_data.dc_det_pin);
1024 dev_err(&cw_bat->client->dev, "failed to set dc_det_pin input\n");
1025 goto request_bat_low_pin_fail;
1028 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin)) {
1029 ret = gpio_request(cw_bat->plat_data.bat_low_pin, NULL);
1031 dev_err(&cw_bat->client->dev, "failed to request bat_low_pin gpio\n");
1032 goto request_bat_low_pin_fail;
1035 ret = gpio_direction_input(cw_bat->plat_data.bat_low_pin);
1037 dev_err(&cw_bat->client->dev, "failed to set bat_low_pin input\n");
1038 goto request_bat_low_pin_fail;
1041 if (gpio_is_valid(cw_bat->plat_data.chg_ok_pin)) {
1042 ret = gpio_request(cw_bat->plat_data.chg_ok_pin, NULL);
1044 dev_err(&cw_bat->client->dev, "failed to request chg_ok_pin gpio\n");
1045 goto request_chg_ok_pin_fail;
1048 ret = gpio_direction_input(cw_bat->plat_data.chg_ok_pin);
1050 dev_err(&cw_bat->client->dev, "failed to set chg_ok_pin input\n");
1051 gpio_free(cw_bat->plat_data.chg_ok_pin);
1052 goto request_chg_ok_pin_fail;
1056 if ((gpio_is_valid(cw_bat->plat_data.chg_mode_sel_pin))) {
1057 ret = gpio_request(cw_bat->plat_data.chg_mode_sel_pin, NULL);
1059 dev_err(&cw_bat->client->dev, "failed to request chg_mode_sel_pin gpio\n");
1060 goto request_chg_mode_sel_pin_fail;
1062 ret = gpio_direction_output(cw_bat->plat_data.chg_mode_sel_pin, (cw_bat->plat_data.chg_mode_sel_level==CW2015_GPIO_LOW) ? CW2015_GPIO_HIGH : CW2015_GPIO_LOW);
1064 dev_err(&cw_bat->client->dev, "failed to set chg_mode_sel_pin output\n");
1065 gpio_free(cw_bat->plat_data.chg_mode_sel_pin);
1066 goto request_chg_mode_sel_pin_fail;
1072 request_chg_mode_sel_pin_fail:
1073 gpio_free(cw_bat->plat_data.chg_mode_sel_pin);
1075 request_chg_ok_pin_fail:
1076 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin))
1077 gpio_free(cw_bat->plat_data.bat_low_pin);
1079 request_bat_low_pin_fail:
1080 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin))
1081 gpio_free(cw_bat->plat_data.dc_det_pin);
1083 request_dc_det_pin_fail:
1089 static void dc_detect_do_wakeup(struct work_struct *work)
1095 struct delayed_work *delay_work;
1096 struct cw_battery *cw_bat;
1098 delay_work = container_of(work, struct delayed_work, work);
1099 cw_bat = container_of(delay_work, struct cw_battery, dc_wakeup_work);
1101 rk_send_wakeup_key();
1103 /* this assume if usb insert or extract dc_det pin is change */
1105 if(cw_bat->charger_init_mode)
1106 cw_bat->charger_init_mode=0;
1109 irq = gpio_to_irq(cw_bat->plat_data.dc_det_pin);
1110 type = gpio_get_value(cw_bat->plat_data.dc_det_pin) ? IRQ_TYPE_EDGE_FALLING : IRQ_TYPE_EDGE_RISING;
1111 ret = irq_set_irq_type(irq, type);
1113 pr_err("%s: irq_set_irq_type(%d, %d) failed\n", __func__, irq, type);
1118 static irqreturn_t dc_detect_irq_handler(int irq, void *dev_id)
1120 struct cw_battery *cw_bat = dev_id;
1121 disable_irq_nosync(irq); // for irq debounce
1122 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->dc_wakeup_work, msecs_to_jiffies(20));
1126 #ifdef BAT_LOW_INTERRUPT
1128 #define WAKE_LOCK_TIMEOUT (10 * HZ)
1130 static void bat_low_detect_do_wakeup(struct work_struct *work)
1132 struct delayed_work *delay_work;
1133 struct cw_battery *cw_bat;
1135 delay_work = container_of(work, struct delayed_work, work);
1136 cw_bat = container_of(delay_work, struct cw_battery, bat_low_wakeup_work);
1137 dev_info(&cw_bat->client->dev, "func: %s-------\n", __func__);
1142 static irqreturn_t bat_low_detect_irq_handler(int irq, void *dev_id)
1144 struct cw_battery *cw_bat = dev_id;
1145 // disable_irq_nosync(irq); // for irq debounce
1146 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->bat_low_wakeup_work, msecs_to_jiffies(20));
1152 static int cw2015_parse_dt(struct device *dev,
1153 struct cw_bat_platform_data *data)
1155 struct device_node *node = dev->of_node;
1156 enum of_gpio_flags flags;
1157 struct property *prop;
1165 memset(data, 0, sizeof(*data));
1167 /* determine the number of config info */
1168 prop = of_find_property(node, "bat_config_info", &length);
1172 length /= sizeof(u32);
1175 size_t size = sizeof(*data->cw_bat_config_info) * length;
1176 data->cw_bat_config_info = devm_kzalloc(dev, size, GFP_KERNEL);
1177 if (!data->cw_bat_config_info)
1180 ret = of_property_read_u32_array(node, "bat_config_info",
1181 data->cw_bat_config_info,
1187 data->dc_det_pin = of_get_named_gpio_flags(node, "dc_det_gpio", 0,
1189 if (data->dc_det_pin == -EPROBE_DEFER)
1190 printk("%s dc_det_gpio error\n",__func__);
1192 if (gpio_is_valid(data->dc_det_pin))
1193 data->dc_det_level = (flags & OF_GPIO_ACTIVE_LOW)? CW2015_GPIO_LOW:CW2015_GPIO_HIGH;
1196 data->bat_low_pin = of_get_named_gpio_flags(node, "bat_low_gpio", 0,
1198 if (data->bat_low_pin == -EPROBE_DEFER)
1199 printk("%s bat_low_gpio error\n",__func__);
1201 if (gpio_is_valid(data->bat_low_pin))
1202 data->bat_low_level = (flags & OF_GPIO_ACTIVE_LOW)? CW2015_GPIO_LOW:CW2015_GPIO_HIGH;
1205 data->chg_ok_pin = of_get_named_gpio_flags(node, "chg_ok_gpio", 0,
1207 if (data->chg_ok_pin == -EPROBE_DEFER)
1208 printk("%s chg_ok_gpio error\n",__func__);
1210 if (gpio_is_valid(data->chg_ok_pin))
1211 data->chg_ok_level = (flags & OF_GPIO_ACTIVE_LOW)? CW2015_GPIO_LOW:CW2015_GPIO_HIGH;
1213 data->chg_mode_sel_pin = of_get_named_gpio_flags(node, "chg_mode_sel_gpio", 0,
1215 if (data->chg_mode_sel_pin == -EPROBE_DEFER)
1216 printk("%s chg_mod_sel_gpio error\n",__func__);
1218 if (gpio_is_valid(data->chg_mode_sel_pin))
1219 data->chg_mode_sel_level = (flags & OF_GPIO_ACTIVE_LOW)? CW2015_GPIO_LOW:CW2015_GPIO_HIGH;
1222 ret = of_property_read_u32(node, "is_dc_charge",
1226 printk("%s:hardware unsupport dc charge\n",__func__);
1229 data->is_dc_charge = value;
1231 ret = of_property_read_u32(node, "is_usb_charge",
1235 printk("%s:hardware unsupport usb charge\n",__func__);
1238 data->is_usb_charge = value;
1240 printk("cw201x:support %s %s charger\n",
1241 data->is_dc_charge ? "DC" : "", data->is_usb_charge ? "USB" : "");
1246 static int cw2015_parse_dt(struct device *dev,
1247 struct cw_bat_platform_data *data)
1253 static int cw_bat_probe(struct i2c_client *client, const struct i2c_device_id *id)
1255 struct cw_battery *cw_bat;
1256 struct cw_bat_platform_data *plat_data = client->dev.platform_data;
1263 cw_bat = devm_kzalloc(&client->dev, sizeof(*cw_bat), GFP_KERNEL);
1265 dev_err(&cw_bat->client->dev, "fail to allocate memory for cw2015\n");
1268 i2c_set_clientdata(client, cw_bat);
1271 ret = cw2015_parse_dt(&client->dev, &(cw_bat->plat_data));
1273 dev_err(&client->dev, "failed to find cw2015 platform data\n");
1278 cw_bat->client = client;
1279 ret = cw_bat_gpio_init(cw_bat);
1281 dev_err(&cw_bat->client->dev, "cw_bat_gpio_init error\n");
1285 ret = cw_init(cw_bat);
1287 while ((loop++ < 200) && (ret != 0)) {
1288 ret = cw_init(cw_bat);
1293 printk("%s cw_init error\n",__func__);
1297 cw_bat->rk_bat.name = "rk-bat";
1298 cw_bat->rk_bat.type = POWER_SUPPLY_TYPE_BATTERY;
1299 cw_bat->rk_bat.properties = rk_battery_properties;
1300 cw_bat->rk_bat.num_properties = ARRAY_SIZE(rk_battery_properties);
1301 cw_bat->rk_bat.get_property = rk_battery_get_property;
1302 ret = power_supply_register(&client->dev, &cw_bat->rk_bat);
1304 dev_err(&cw_bat->client->dev, "power supply register rk_bat error\n");
1305 goto rk_bat_register_fail;
1308 cw_bat->rk_ac.name = "rk-ac";
1309 cw_bat->rk_ac.type = POWER_SUPPLY_TYPE_MAINS;
1310 cw_bat->rk_ac.properties = rk_ac_properties;
1311 cw_bat->rk_ac.num_properties = ARRAY_SIZE(rk_ac_properties);
1312 cw_bat->rk_ac.get_property = rk_ac_get_property;
1313 ret = power_supply_register(&client->dev, &cw_bat->rk_ac);
1315 dev_err(&cw_bat->client->dev, "power supply register rk_ac error\n");
1316 goto rk_ac_register_fail;
1319 if (cw_bat->plat_data.is_usb_charge == 1) {
1320 cw_bat->rk_usb.name = "rk-usb";
1321 cw_bat->rk_usb.type = POWER_SUPPLY_TYPE_USB;
1322 cw_bat->rk_usb.properties = rk_usb_properties;
1323 cw_bat->rk_usb.num_properties = ARRAY_SIZE(rk_usb_properties);
1324 cw_bat->rk_usb.get_property = rk_usb_get_property;
1325 ret = power_supply_register(&client->dev, &cw_bat->rk_usb);
1327 dev_err(&cw_bat->client->dev, "power supply register rk_usb error\n");
1328 goto rk_usb_register_fail;
1330 cw_bat->charger_init_mode = dwc_otg_check_dpdm();
1331 printk("%s cw2015 support charger by usb. usb_mode=%d\n",__func__,cw_bat->charger_init_mode);
1334 cw_bat->dc_online = 0;
1335 cw_bat->usb_online = 0;
1336 cw_bat->charger_mode = 0;
1337 cw_bat->capacity = 2;
1338 cw_bat->voltage = 0;
1340 cw_bat->time_to_empty = 0;
1341 cw_bat->bat_change = 0;
1343 cw_update_time_member_capacity_change(cw_bat);
1344 cw_update_time_member_charge_start(cw_bat);
1346 cw_bat->battery_workqueue = create_singlethread_workqueue("rk_battery");
1347 INIT_DELAYED_WORK(&cw_bat->battery_delay_work, cw_bat_work);
1348 INIT_DELAYED_WORK(&cw_bat->dc_wakeup_work, dc_detect_do_wakeup);
1349 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->battery_delay_work, msecs_to_jiffies(10));
1351 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
1352 irq = gpio_to_irq(cw_bat->plat_data.dc_det_pin);
1353 level = gpio_get_value(cw_bat->plat_data.dc_det_pin);
1354 if (level == cw_bat->plat_data.dc_det_level)
1356 printk("%s booting up with dc plug\n",__func__);
1357 cw_bat->status = POWER_SUPPLY_STATUS_CHARGING;
1359 irq_flags = level ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
1360 ret = request_irq(irq, dc_detect_irq_handler, irq_flags, "dc_detect", cw_bat);
1362 pr_err("%s: request_irq(%d) failed\n", __func__, irq);
1364 enable_irq_wake(irq);
1368 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin)) {
1369 INIT_DELAYED_WORK(&cw_bat->bat_low_wakeup_work, bat_low_detect_do_wakeup);
1370 level = gpio_get_value(cw_bat->plat_data.bat_low_pin);
1371 if (level == cw_bat->plat_data.dc_det_level)
1373 printk("%s booting up with lower power\n",__func__);
1374 cw_bat->capacity = 1;
1376 irq = gpio_to_irq(cw_bat->plat_data.bat_low_pin);
1377 ret = request_irq(irq, bat_low_detect_irq_handler, IRQF_TRIGGER_RISING, "bat_low_detect", cw_bat);
1379 gpio_free(cw_bat->plat_data.bat_low_pin);
1381 enable_irq_wake(irq);
1384 dev_info(&cw_bat->client->dev, "cw2015/cw2013 driver v1.2 probe sucess\n");
1387 rk_usb_register_fail:
1388 power_supply_unregister(&cw_bat->rk_usb);
1389 rk_ac_register_fail:
1390 power_supply_unregister(&cw_bat->rk_ac);
1391 rk_bat_register_fail:
1392 power_supply_unregister(&cw_bat->rk_bat);
1394 dev_info(&cw_bat->client->dev, "cw2015/cw2013 driver v1.2 probe error!!!!\n");
1398 static int cw_bat_remove(struct i2c_client *client)
1400 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1401 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1402 cancel_delayed_work(&cw_bat->battery_delay_work);
1407 static int cw_bat_suspend(struct device *dev)
1409 struct i2c_client *client = to_i2c_client(dev);
1410 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1411 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1412 cancel_delayed_work(&cw_bat->battery_delay_work);
1416 static int cw_bat_resume(struct device *dev)
1418 struct i2c_client *client = to_i2c_client(dev);
1419 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1420 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1421 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->battery_delay_work, msecs_to_jiffies(100));
1425 static const struct i2c_device_id cw_id[] = {
1429 MODULE_DEVICE_TABLE(i2c, cw_id);
1431 static const struct dev_pm_ops cw_bat_pm_ops = {
1432 .suspend = cw_bat_suspend,
1433 .resume = cw_bat_resume,
1437 static struct i2c_driver cw_bat_driver = {
1441 .pm = &cw_bat_pm_ops,
1445 .probe = cw_bat_probe,
1446 .remove = cw_bat_remove,
1450 static int __init cw_bat_init(void)
1452 return i2c_add_driver(&cw_bat_driver);
1455 static void __exit cw_bat_exit(void)
1457 i2c_del_driver(&cw_bat_driver);
1460 fs_initcall(cw_bat_init);
1461 module_exit(cw_bat_exit);
1464 MODULE_AUTHOR("xhc<xhc@rock-chips.com>");
1465 MODULE_DESCRIPTION("cw2015/cw2013 battery driver");
1466 MODULE_LICENSE("GPL");