2 * Fuel gauge driver for CellWise 2013 / 2015
4 * Copyright (C) 2012, RockChip
6 * Authors: xuhuicong <xhc@rock-chips.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * 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/time.h>
24 #include <linux/interrupt.h>
25 #include <linux/irq.h>
26 #include <linux/slab.h>
28 #include <linux/power/cw2015_battery.h>
30 static int i2c_master_reg8_send(const struct i2c_client *client, const char reg,
31 const char *buf, int count, int scl_rate)
36 struct i2c_adapter *adap = client->adapter;
38 tx_buf = kzalloc(count + 1, GFP_KERNEL);
43 memcpy(tx_buf + 1, buf, count);
45 msg.addr = client->addr;
46 msg.flags = client->flags;
48 msg.buf = (char *)tx_buf;
49 msg.scl_rate = scl_rate;
51 ret = i2c_transfer(adap, &msg, 1);
54 return (ret == 1) ? count : ret;
57 static int i2c_master_reg8_recv(const struct i2c_client *client, const char reg,
58 char *buf, int count, int scl_rate)
60 struct i2c_adapter *adap = client->adapter;
61 struct i2c_msg msgs[2];
65 msgs[0].addr = client->addr;
66 msgs[0].flags = client->flags;
68 msgs[0].buf = ®_buf;
69 msgs[0].scl_rate = scl_rate;
71 msgs[1].addr = client->addr;
72 msgs[1].flags = client->flags | I2C_M_RD;
74 msgs[1].buf = (char *)buf;
75 msgs[1].scl_rate = scl_rate;
77 ret = i2c_transfer(adap, msgs, 2);
79 return (ret == 2) ? count : ret;
82 static int cw_read(struct i2c_client *client, u8 reg, u8 buf[])
86 ret = i2c_master_reg8_recv(client, reg, buf, 1, CW_I2C_SPEED);
91 static int cw_write(struct i2c_client *client, u8 reg, u8 const buf[])
95 ret = i2c_master_reg8_send(client, reg, buf, 1, CW_I2C_SPEED);
100 static int cw_read_word(struct i2c_client *client, u8 reg, u8 buf[])
104 ret = i2c_master_reg8_recv(client, reg, buf, 2, CW_I2C_SPEED);
109 static int cw_update_config_info(struct cw_battery *cw_bat)
116 dev_info(&cw_bat->client->dev, "func: %s-------\n", __func__);
118 /* make sure no in sleep mode */
119 ret = cw_read(cw_bat->client, REG_MODE, ®_val);
124 if ((reg_val & MODE_SLEEP_MASK) == MODE_SLEEP) {
125 dev_err(&cw_bat->client->dev,
126 "Error, device in sleep mode, cannot update battery info\n");
130 /* update new battery info */
131 for (i = 0; i < SIZE_BATINFO; i++) {
133 cw_write(cw_bat->client, REG_BATINFO + i,
134 (u8 *)&cw_bat->plat_data.cw_bat_config_info[i]);
140 /* readback & check */
141 for (i = 0; i < SIZE_BATINFO; i++) {
142 ret = cw_read(cw_bat->client, REG_BATINFO + i, ®_val);
143 if (reg_val != cw_bat->plat_data.cw_bat_config_info[i])
147 /* set cw2015/cw2013 to use new battery info */
148 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
152 reg_val |= CONFIG_UPDATE_FLG; /* set UPDATE_FLAG */
153 reg_val &= 0x07; /* clear ATHD */
154 reg_val |= ATHD; /* set ATHD */
155 ret = cw_write(cw_bat->client, REG_CONFIG, ®_val);
159 /* check 2015/cw2013 for ATHD & update_flag */
160 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
164 if (!(reg_val & CONFIG_UPDATE_FLG)) {
165 dev_info(&cw_bat->client->dev,
166 "update flag for new battery info have not set..\n");
169 if ((reg_val & 0xf8) != ATHD)
170 dev_info(&cw_bat->client->dev, "the new ATHD have not set..\n");
173 reset_val &= ~(MODE_RESTART);
174 reg_val = reset_val | MODE_RESTART;
175 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
180 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
187 static int cw_init(struct cw_battery *cw_bat)
191 u8 reg_val = MODE_SLEEP;
193 if ((reg_val & MODE_SLEEP_MASK) == MODE_SLEEP) {
194 reg_val = MODE_NORMAL;
195 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
200 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
204 if ((reg_val & 0xf8) != ATHD) {
205 dev_info(&cw_bat->client->dev, "the new ATHD have not set\n");
206 reg_val &= 0x07; /* clear ATHD */
207 reg_val |= ATHD; /* set ATHD */
208 ret = cw_write(cw_bat->client, REG_CONFIG, ®_val);
213 ret = cw_read(cw_bat->client, REG_CONFIG, ®_val);
217 if (!(reg_val & CONFIG_UPDATE_FLG)) {
218 dev_info(&cw_bat->client->dev,
219 "update flag for new battery info have not set\n");
220 ret = cw_update_config_info(cw_bat);
224 for (i = 0; i < SIZE_BATINFO; i++) {
226 cw_read(cw_bat->client, (REG_BATINFO + i),
231 if (cw_bat->plat_data.cw_bat_config_info[i] != reg_val)
235 if (i != SIZE_BATINFO) {
236 dev_info(&cw_bat->client->dev,
237 "update flag for new battery info have not set\n");
238 ret = cw_update_config_info(cw_bat);
244 for (i = 0; i < 30; i++) {
245 ret = cw_read(cw_bat->client, REG_SOC, ®_val);
248 else if (reg_val <= 0x64)
253 dev_err(&cw_bat->client->dev,
254 "cw2015/cw2013 input unvalid power error\n");
258 reg_val = MODE_SLEEP;
259 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
260 dev_info(&cw_bat->client->dev, "report battery capacity error");
266 static void cw_update_time_member_charge_start(struct cw_battery *cw_bat)
273 new_run_time = ts.tv_sec;
275 get_monotonic_boottime(&ts);
276 new_sleep_time = ts.tv_sec - new_run_time;
278 cw_bat->run_time_charge_start = new_run_time;
279 cw_bat->sleep_time_charge_start = new_sleep_time;
282 static void cw_update_time_member_capacity_change(struct cw_battery *cw_bat)
289 new_run_time = ts.tv_sec;
291 get_monotonic_boottime(&ts);
292 new_sleep_time = ts.tv_sec - new_run_time;
294 cw_bat->run_time_capacity_change = new_run_time;
295 cw_bat->sleep_time_capacity_change = new_sleep_time;
299 static int cw_quickstart(struct cw_battery *cw_bat)
302 u8 reg_val = MODE_QUICK_START;
304 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
306 dev_err(&cw_bat->client->dev, "Error quick start1\n");
310 reg_val = MODE_NORMAL;
311 ret = cw_write(cw_bat->client, REG_MODE, ®_val);
313 dev_err(&cw_bat->client->dev, "Error quick start2\n");
319 static int cw_get_capacity(struct cw_battery *cw_bat)
330 long capacity_or_aconline_time;
331 static int if_quickstart;
332 static int jump_flag;
333 static int reset_loop;
336 ret = cw_read(cw_bat->client, REG_SOC, ®_val);
339 cw_capacity = reg_val;
341 if (cw_capacity < 0 || cw_capacity > 100) {
342 dev_err(&cw_bat->client->dev,
343 "get cw_capacity error; cw_capacity = %d\n",
347 if (reset_loop > 5) {
348 reset_val = MODE_SLEEP;
349 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
352 reset_val = MODE_NORMAL;
354 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
357 dev_info(&cw_bat->client->dev,
358 "report battery capacity error");
359 ret = cw_update_config_info(cw_bat);
371 new_run_time = ts.tv_sec;
373 get_monotonic_boottime(&ts);
374 new_sleep_time = ts.tv_sec - new_run_time;
376 /* modify battery level swing */
377 if ((cw_bat->charger_mode > 0 &&
378 cw_capacity <= (cw_bat->capacity - 1) &&
379 cw_capacity > (cw_bat->capacity - 9)) ||
380 (cw_bat->charger_mode == 0 &&
381 cw_capacity == (cw_bat->capacity + 1))) {
382 if (!(cw_capacity == 0 && cw_bat->capacity <= 2))
383 cw_capacity = cw_bat->capacity;
386 /* avoid no charge full */
387 if (cw_bat->charger_mode > 0 &&
389 cw_capacity <= cw_bat->capacity) {
390 capacity_or_aconline_time =
391 (cw_bat->sleep_time_capacity_change >
392 cw_bat->sleep_time_charge_start) ? cw_bat->
393 sleep_time_capacity_change : cw_bat->
394 sleep_time_charge_start;
395 capacity_or_aconline_time +=
396 (cw_bat->run_time_capacity_change >
397 cw_bat->run_time_charge_start) ? cw_bat->
398 run_time_capacity_change : cw_bat->run_time_charge_start;
400 (new_sleep_time + new_run_time -
401 capacity_or_aconline_time) / BATTERY_UP_MAX_CHANGE;
402 if (allow_change > 0) {
403 allow_capacity = cw_bat->capacity + allow_change;
405 (allow_capacity <= 100) ? allow_capacity : 100;
407 } else if (cw_capacity <= cw_bat->capacity) {
408 cw_capacity = cw_bat->capacity;
411 /* avoid battery level jump to CW_BAT */
412 else if (cw_bat->charger_mode == 0 &&
413 cw_capacity <= cw_bat->capacity &&
414 cw_capacity >= 90 && jump_flag == 1) {
415 capacity_or_aconline_time =
416 (cw_bat->sleep_time_capacity_change >
417 cw_bat->sleep_time_charge_start) ? cw_bat->
418 sleep_time_capacity_change : cw_bat->
419 sleep_time_charge_start;
420 capacity_or_aconline_time +=
421 (cw_bat->run_time_capacity_change >
422 cw_bat->run_time_charge_start) ? cw_bat->
423 run_time_capacity_change : cw_bat->run_time_charge_start;
425 (new_sleep_time + new_run_time -
426 capacity_or_aconline_time) / BATTERY_DOWN_CHANGE;
427 if (allow_change > 0) {
428 allow_capacity = cw_bat->capacity - allow_change;
429 if (cw_capacity >= allow_capacity) {
434 100) ? allow_capacity : 100;
436 } else if (cw_capacity <= cw_bat->capacity) {
437 cw_capacity = cw_bat->capacity;
441 /* avoid battery level jump to 0% at a moment from more than 2% */
442 if (cw_capacity == 0 && cw_bat->capacity > 1) {
445 cw_bat->run_time_capacity_change) /
446 BATTERY_DOWN_MIN_CHANGE_RUN);
449 cw_bat->sleep_time_capacity_change) /
450 BATTERY_DOWN_MIN_CHANGE_SLEEP);
452 allow_capacity = cw_bat->capacity - allow_change;
455 cw_capacity) ? allow_capacity : cw_capacity;
456 dev_info(&cw_bat->client->dev, "report GGIC POR happened");
457 reset_val = MODE_SLEEP;
458 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
461 reset_val = MODE_NORMAL;
463 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
466 dev_info(&cw_bat->client->dev, "report battery capacity error");
467 ret = cw_update_config_info(cw_bat);
470 dev_info(&cw_bat->client->dev,
471 "report battery capacity jump 0 ");
474 if (cw_bat->charger_mode > 0 && cw_capacity == 0) {
476 new_sleep_time + new_run_time -
477 cw_bat->sleep_time_charge_start -
478 cw_bat->run_time_charge_start;
479 if (charge_time > BATTERY_DOWN_MAX_CHANGE_RUN_AC_ONLINE &&
480 if_quickstart == 0) {
481 reset_val = MODE_SLEEP;
482 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
485 reset_val = MODE_NORMAL;
487 ret = cw_write(cw_bat->client, REG_MODE, &reset_val);
490 dev_info(&cw_bat->client->dev,
491 "report battery capacity error");
492 ret = cw_update_config_info(cw_bat);
495 dev_info(&cw_bat->client->dev,
496 "report battery capacity still 0 if in changing");
499 } else if (if_quickstart == 1 && cw_bat->charger_mode == 0) {
504 #ifdef SYSTEM_SHUTDOWN_VOLTAGE
505 if (cw_bat->charger_mode == 0 && cw_capacity <= 10 &&
506 cw_bat->voltage <= SYSTEM_SHUTDOWN_VOLTAGE) {
507 if (if_quickstart == 10) {
508 cw_quickstart(cw_bat);
511 } else if (if_quickstart <= 10) {
512 if_quickstart = if_quickstart + 2;
514 dev_info(&cw_bat->client->dev,
515 "voltage is less than shutdown voltage\n");
516 } else if ((cw_bat->charger_mode > 0) && (if_quickstart <= 12)) {
523 static int cw_get_vol(struct cw_battery *cw_bat)
527 u16 value16, value16_1, value16_2, value16_3;
530 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
533 value16 = (reg_val[0] << 8) + reg_val[1];
535 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
538 value16_1 = (reg_val[0] << 8) + reg_val[1];
540 ret = cw_read_word(cw_bat->client, REG_VCELL, reg_val);
543 value16_2 = (reg_val[0] << 8) + reg_val[1];
545 if (value16 > value16_1) {
548 value16_1 = value16_3;
551 if (value16_1 > value16_2) {
552 value16_3 = value16_1;
553 value16_1 = value16_2;
554 value16_2 = value16_3;
557 if (value16 > value16_1) {
560 value16_1 = value16_3;
563 voltage = value16_1 * 305;
565 dev_dbg(&cw_bat->client->dev, "the cw201x voltage=%d,reg_val=%x %x\n",
566 voltage, reg_val[0], reg_val[1]);
570 #ifdef BAT_LOW_INTERRUPT
571 static int cw_get_alt(struct cw_battery *cw_bat)
578 ret = cw_read(cw_bat->client, REG_RRT_ALERT, ®_val);
584 value8 = value8 & 0x7f;
586 ret = cw_write(cw_bat->client, REG_RRT_ALERT, ®_val);
588 dev_err(&cw_bat->client->dev, "Error clear ALRT\n");
596 static int cw_get_time_to_empty(struct cw_battery *cw_bat)
602 ret = cw_read(cw_bat->client, REG_RRT_ALERT, ®_val);
608 ret = cw_read(cw_bat->client, REG_RRT_ALERT + 1, ®_val);
612 value16 = ((value16 << 8) + reg_val) & 0x1fff;
616 static void rk_bat_update_capacity(struct cw_battery *cw_bat)
620 cw_capacity = cw_get_capacity(cw_bat);
621 if ((cw_capacity >= 0) && (cw_capacity <= 100) &&
622 (cw_bat->capacity != cw_capacity)) {
623 cw_bat->capacity = cw_capacity;
624 cw_bat->bat_change = 1;
625 cw_update_time_member_capacity_change(cw_bat);
627 if (cw_bat->capacity == 0)
628 dev_info(&cw_bat->client->dev,
629 "report battery capacity 0 and will shutdown if no changing");
633 static void rk_bat_update_vol(struct cw_battery *cw_bat)
637 ret = cw_get_vol(cw_bat);
638 if ((ret >= 0) && (cw_bat->voltage != ret))
639 cw_bat->voltage = ret;
642 static void rk_bat_update_status(struct cw_battery *cw_bat)
646 if (cw_bat->charger_mode > 0) {
647 if (cw_bat->capacity >= 100)
648 status = POWER_SUPPLY_STATUS_FULL;
650 status = POWER_SUPPLY_STATUS_CHARGING;
652 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
655 if (cw_bat->status != status) {
656 cw_bat->status = status;
657 cw_bat->bat_change = 1;
661 static void rk_bat_update_time_to_empty(struct cw_battery *cw_bat)
665 ret = cw_get_time_to_empty(cw_bat);
666 if ((ret >= 0) && (cw_bat->time_to_empty != ret))
667 cw_bat->time_to_empty = ret;
670 static int rk_ac_update_online(struct cw_battery *cw_bat)
674 if (!gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
675 cw_bat->dc_online = 0;
676 pr_info("%s dc charger without dc_det_pin\n", __func__);
680 if (gpio_get_value(cw_bat->plat_data.dc_det_pin) ==
681 cw_bat->plat_data.dc_det_level) {
682 if (cw_bat->dc_online != 1) {
683 cw_update_time_member_charge_start(cw_bat);
684 cw_bat->dc_online = 1;
685 if (cw_bat->charger_mode != AC_CHARGER_MODE)
686 cw_bat->charger_mode = AC_CHARGER_MODE;
691 if (cw_bat->dc_online != 0) {
692 cw_update_time_member_charge_start(cw_bat);
693 cw_bat->dc_online = 0;
694 if (cw_bat->usb_online == 0)
695 cw_bat->charger_mode = 0;
702 static int get_usb_charge_state(struct cw_battery *cw_bat)
708 int gadget_status = get_gadget_connect_flag();
709 int usb_status = dwc_vbus_status();
711 get_monotonic_boottime(&ts);
712 time_from_boot = ts.tv_sec;
714 if (cw_bat->charger_init_mode) {
715 if (usb_status == 1 || usb_status == 2) {
716 cw_bat->charger_init_mode = 0;
717 } else if (time_from_boot < 8) {
718 usb_status = cw_bat->charger_init_mode;
719 } else if (strstr(saved_command_line, "charger")) {
720 cw_bat->charger_init_mode = dwc_otg_check_dpdm();
721 usb_status = cw_bat->charger_init_mode;
724 #ifdef NO_STANDARD_AC_BIG_CHARGE_MODE
725 if (cw_bat->usb_online == 1) {
727 time_from_boot - cw_bat->sleep_time_charge_start -
728 cw_bat->run_time_charge_start;
729 if (charge_time > 3) {
730 if (gadget_status == 0 && dwc_vbus_status() == 1)
736 dev_dbg(&cw_bat->client->dev,
737 "%s usb_status=[%d],cw_bat->charger_mode=[%d],cw_bat->gadget_status=[%d], cw_bat->charger_init_mode = [%d]\n",
738 __func__, usb_status, cw_bat->charger_mode, gadget_status,
739 cw_bat->charger_init_mode);
744 static int rk_usb_update_online(struct cw_battery *cw_bat)
751 gpio = cw_bat->plat_data.chg_mode_sel_pin;
752 value = cw_bat->plat_data.chg_mode_sel_level;
753 usb_status = get_usb_charge_state(cw_bat);
754 if (usb_status == 2) {
755 if (cw_bat->charger_mode != AC_CHARGER_MODE) {
756 cw_bat->charger_mode = AC_CHARGER_MODE;
759 if (gpio_is_valid(gpio)) {
760 if (gpio_get_value(gpio) != value)
761 gpio_direction_output(gpio, value);
764 if (cw_bat->usb_online != 1) {
765 cw_bat->usb_online = 1;
766 cw_update_time_member_charge_start(cw_bat);
769 } else if (usb_status == 1) {
770 if (cw_bat->charger_mode != USB_CHARGER_MODE &&
771 cw_bat->dc_online == 0) {
772 cw_bat->charger_mode = USB_CHARGER_MODE;
776 if (gpio_is_valid(gpio)) {
777 if (gpio_get_value(gpio) == value)
778 gpio_direction_output(gpio, !value);
780 if (cw_bat->usb_online != 1) {
781 cw_bat->usb_online = 1;
782 cw_update_time_member_charge_start(cw_bat);
785 } else if (usb_status == 0 && cw_bat->usb_online != 0) {
786 if (gpio_is_valid(gpio)) {
787 if (gpio_get_value(gpio) == value)
788 gpio_direction_output(gpio, !value);
791 if (cw_bat->dc_online == 0)
792 cw_bat->charger_mode = 0;
794 cw_update_time_member_charge_start(cw_bat);
795 cw_bat->usb_online = 0;
802 static void cw_bat_work(struct work_struct *work)
804 struct delayed_work *delay_work;
805 struct cw_battery *cw_bat;
808 delay_work = container_of(work, struct delayed_work, work);
810 container_of(delay_work, struct cw_battery, battery_delay_work);
812 if (cw_bat->plat_data.is_dc_charge == 1) {
813 ret = rk_ac_update_online(cw_bat);
815 power_supply_changed(&cw_bat->rk_ac);
818 if (cw_bat->plat_data.is_usb_charge == 1) {
819 ret = rk_usb_update_online(cw_bat);
821 power_supply_changed(&cw_bat->rk_usb);
822 power_supply_changed(&cw_bat->rk_ac);
826 rk_bat_update_status(cw_bat);
827 rk_bat_update_capacity(cw_bat);
828 rk_bat_update_vol(cw_bat);
829 rk_bat_update_time_to_empty(cw_bat);
831 if (cw_bat->bat_change) {
832 power_supply_changed(&cw_bat->rk_bat);
833 cw_bat->bat_change = 0;
836 queue_delayed_work(cw_bat->battery_workqueue,
837 &cw_bat->battery_delay_work, msecs_to_jiffies(1000));
839 dev_dbg(&cw_bat->client->dev,
840 "cw_bat->bat_change = %d, cw_bat->time_to_empty = %d, cw_bat->capacity = %d\n",
841 cw_bat->bat_change, cw_bat->time_to_empty, cw_bat->capacity);
843 dev_dbg(&cw_bat->client->dev,
844 "cw_bat->voltage = %d, cw_bat->dc_online = %d, cw_bat->usb_online = %d\n",
845 cw_bat->voltage, cw_bat->dc_online, cw_bat->usb_online);
848 static int rk_usb_get_property(struct power_supply *psy,
849 enum power_supply_property psp,
850 union power_supply_propval *val)
853 struct cw_battery *cw_bat;
855 cw_bat = container_of(psy, struct cw_battery, rk_usb);
857 case POWER_SUPPLY_PROP_ONLINE:
858 val->intval = (cw_bat->charger_mode == USB_CHARGER_MODE);
866 static enum power_supply_property rk_usb_properties[] = {
867 POWER_SUPPLY_PROP_ONLINE,
870 static int rk_ac_get_property(struct power_supply *psy,
871 enum power_supply_property psp,
872 union power_supply_propval *val)
875 struct cw_battery *cw_bat;
877 cw_bat = container_of(psy, struct cw_battery, rk_ac);
879 case POWER_SUPPLY_PROP_ONLINE:
880 val->intval = (cw_bat->charger_mode == AC_CHARGER_MODE);
888 static enum power_supply_property rk_ac_properties[] = {
889 POWER_SUPPLY_PROP_ONLINE,
892 static int rk_battery_get_property(struct power_supply *psy,
893 enum power_supply_property psp,
894 union power_supply_propval *val)
897 struct cw_battery *cw_bat;
899 cw_bat = container_of(psy, struct cw_battery, rk_bat);
901 case POWER_SUPPLY_PROP_CAPACITY:
902 val->intval = cw_bat->capacity;
904 case POWER_SUPPLY_PROP_STATUS:
905 val->intval = cw_bat->status;
908 case POWER_SUPPLY_PROP_HEALTH:
909 val->intval = POWER_SUPPLY_HEALTH_GOOD;
911 case POWER_SUPPLY_PROP_PRESENT:
912 val->intval = cw_bat->voltage <= 0 ? 0 : 1;
915 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
916 val->intval = cw_bat->voltage;
919 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
920 val->intval = cw_bat->time_to_empty;
923 case POWER_SUPPLY_PROP_TECHNOLOGY:
924 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
933 static enum power_supply_property rk_battery_properties[] = {
934 POWER_SUPPLY_PROP_CAPACITY,
935 POWER_SUPPLY_PROP_STATUS,
936 POWER_SUPPLY_PROP_HEALTH,
937 POWER_SUPPLY_PROP_PRESENT,
938 POWER_SUPPLY_PROP_VOLTAGE_NOW,
939 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
940 POWER_SUPPLY_PROP_TECHNOLOGY,
943 static int cw_bat_gpio_init(struct cw_battery *cw_bat)
947 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
948 ret = gpio_request(cw_bat->plat_data.dc_det_pin, NULL);
950 dev_err(&cw_bat->client->dev,
951 "failed to request dc_det_pin gpio\n");
952 goto request_dc_det_pin_fail;
954 ret = gpio_direction_input(cw_bat->plat_data.dc_det_pin);
956 dev_err(&cw_bat->client->dev,
957 "failed to set dc_det_pin input\n");
958 goto request_bat_low_pin_fail;
961 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin)) {
962 ret = gpio_request(cw_bat->plat_data.bat_low_pin, NULL);
964 dev_err(&cw_bat->client->dev,
965 "failed to request bat_low_pin gpio\n");
966 goto request_bat_low_pin_fail;
969 ret = gpio_direction_input(cw_bat->plat_data.bat_low_pin);
971 dev_err(&cw_bat->client->dev,
972 "failed to set bat_low_pin input\n");
973 goto request_bat_low_pin_fail;
976 if (gpio_is_valid(cw_bat->plat_data.chg_ok_pin)) {
977 ret = gpio_request(cw_bat->plat_data.chg_ok_pin, NULL);
979 dev_err(&cw_bat->client->dev,
980 "failed to request chg_ok_pin gpio\n");
981 goto request_chg_ok_pin_fail;
984 ret = gpio_direction_input(cw_bat->plat_data.chg_ok_pin);
986 dev_err(&cw_bat->client->dev,
987 "failed to set chg_ok_pin input\n");
988 gpio_free(cw_bat->plat_data.chg_ok_pin);
989 goto request_chg_ok_pin_fail;
993 if ((gpio_is_valid(cw_bat->plat_data.chg_mode_sel_pin))) {
994 ret = gpio_request(cw_bat->plat_data.chg_mode_sel_pin, NULL);
996 dev_err(&cw_bat->client->dev,
997 "failed to request chg_mode_sel_pin gpio\n");
998 goto request_chg_mode_sel_pin_fail;
1001 gpio_direction_output(cw_bat->plat_data.chg_mode_sel_pin,
1003 chg_mode_sel_level ==
1004 CW2015_GPIO_LOW) ? CW2015_GPIO_HIGH :
1007 dev_err(&cw_bat->client->dev,
1008 "failed to set chg_mode_sel_pin output\n");
1009 gpio_free(cw_bat->plat_data.chg_mode_sel_pin);
1010 goto request_chg_mode_sel_pin_fail;
1016 request_chg_mode_sel_pin_fail:
1017 gpio_free(cw_bat->plat_data.chg_mode_sel_pin);
1018 request_chg_ok_pin_fail:
1019 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin))
1020 gpio_free(cw_bat->plat_data.bat_low_pin);
1021 request_bat_low_pin_fail:
1022 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin))
1023 gpio_free(cw_bat->plat_data.dc_det_pin);
1024 request_dc_det_pin_fail:
1029 static void dc_detect_do_wakeup(struct work_struct *work)
1035 struct delayed_work *delay_work;
1036 struct cw_battery *cw_bat;
1038 delay_work = container_of(work, struct delayed_work, work);
1039 cw_bat = container_of(delay_work, struct cw_battery, dc_wakeup_work);
1041 rk_send_wakeup_key();
1043 irq = gpio_to_irq(cw_bat->plat_data.dc_det_pin);
1045 gpio_get_value(cw_bat->plat_data.
1046 dc_det_pin) ? IRQ_TYPE_EDGE_FALLING :
1047 IRQ_TYPE_EDGE_RISING;
1048 ret = irq_set_irq_type(irq, type);
1050 pr_err("%s: irq_set_irq_type(%d, %d) failed\n", __func__, irq,
1056 static irqreturn_t dc_detect_irq_handler(int irq, void *dev_id)
1058 struct cw_battery *cw_bat = dev_id;
1060 /* for irq debounce */
1061 disable_irq_nosync(irq);
1062 queue_delayed_work(cw_bat->battery_workqueue, &cw_bat->dc_wakeup_work,
1063 msecs_to_jiffies(20));
1067 #ifdef BAT_LOW_INTERRUPT
1069 #define WAKE_LOCK_TIMEOUT (10 * HZ)
1071 static void bat_low_detect_do_wakeup(struct work_struct *work)
1073 struct delayed_work *delay_work;
1074 struct cw_battery *cw_bat;
1076 delay_work = container_of(work, struct delayed_work, work);
1078 container_of(delay_work, struct cw_battery, bat_low_wakeup_work);
1079 dev_info(&cw_bat->client->dev, "func: %s-------\n", __func__);
1083 static irqreturn_t bat_low_detect_irq_handler(int irq, void *dev_id)
1085 struct cw_battery *cw_bat = dev_id;
1087 queue_delayed_work(cw_bat->battery_workqueue,
1088 &cw_bat->bat_low_wakeup_work, msecs_to_jiffies(20));
1094 static int cw2015_parse_dt(struct device *dev,
1095 struct cw_bat_platform_data *data)
1097 struct device_node *node = dev->of_node;
1098 enum of_gpio_flags flags;
1099 struct property *prop;
1107 memset(data, 0, sizeof(*data));
1109 /* determine the number of config info */
1110 prop = of_find_property(node, "bat_config_info", &length);
1114 length /= sizeof(u32);
1117 size_t size = sizeof(*data->cw_bat_config_info) * length;
1119 data->cw_bat_config_info = devm_kzalloc(dev, size, GFP_KERNEL);
1120 if (!data->cw_bat_config_info)
1123 ret = of_property_read_u32_array(node, "bat_config_info",
1124 data->cw_bat_config_info,
1130 data->dc_det_pin = of_get_named_gpio_flags(node, "dc_det_gpio", 0,
1132 if (data->dc_det_pin == -EPROBE_DEFER)
1133 pr_info("%s dc_det_gpio error\n", __func__);
1135 if (gpio_is_valid(data->dc_det_pin))
1136 data->dc_det_level =
1137 (flags & OF_GPIO_ACTIVE_LOW) ? CW2015_GPIO_LOW :
1140 data->bat_low_pin = of_get_named_gpio_flags(node, "bat_low_gpio", 0,
1142 if (data->bat_low_pin == -EPROBE_DEFER)
1143 pr_info("%s bat_low_gpio error\n", __func__);
1145 if (gpio_is_valid(data->bat_low_pin))
1146 data->bat_low_level =
1147 (flags & OF_GPIO_ACTIVE_LOW) ? CW2015_GPIO_LOW :
1150 data->chg_ok_pin = of_get_named_gpio_flags(node, "chg_ok_gpio", 0,
1152 if (data->chg_ok_pin == -EPROBE_DEFER)
1153 pr_info("%s chg_ok_gpio error\n", __func__);
1155 if (gpio_is_valid(data->chg_ok_pin))
1156 data->chg_ok_level =
1157 (flags & OF_GPIO_ACTIVE_LOW) ? CW2015_GPIO_LOW :
1160 data->chg_mode_sel_pin =
1161 of_get_named_gpio_flags(node, "chg_mode_sel_gpio", 0, &flags);
1162 if (data->chg_mode_sel_pin == -EPROBE_DEFER)
1163 pr_info("%s chg_mod_sel_gpio error\n", __func__);
1165 if (gpio_is_valid(data->chg_mode_sel_pin))
1166 data->chg_mode_sel_level =
1167 (flags & OF_GPIO_ACTIVE_LOW) ? CW2015_GPIO_LOW :
1170 ret = of_property_read_u32(node, "is_dc_charge", &value);
1172 pr_info("%s:hardware unsupport dc charge\n", __func__);
1175 data->is_dc_charge = value;
1177 ret = of_property_read_u32(node, "is_usb_charge", &value);
1179 pr_info("%s:hardware unsupport usb charge\n", __func__);
1182 data->is_usb_charge = value;
1184 pr_info("cw201x:support %s %s charger\n",
1185 data->is_dc_charge ? "DC" : "",
1186 data->is_usb_charge ? "USB" : "");
1191 static int cw2015_parse_dt(struct device *dev,
1192 struct cw_bat_platform_data *data)
1198 static int cw_bat_probe(struct i2c_client *client,
1199 const struct i2c_device_id *id)
1201 struct cw_battery *cw_bat;
1202 struct cw_bat_platform_data *plat_data = client->dev.platform_data;
1208 cw_bat = devm_kzalloc(&client->dev, sizeof(*cw_bat), GFP_KERNEL);
1210 dev_err(&cw_bat->client->dev,
1211 "fail to allocate memory for cw2015\n");
1214 i2c_set_clientdata(client, cw_bat);
1217 ret = cw2015_parse_dt(&client->dev, &(cw_bat->plat_data));
1219 dev_err(&client->dev,
1220 "failed to find cw2015 platform data\n");
1225 cw_bat->client = client;
1226 ret = cw_bat_gpio_init(cw_bat);
1228 dev_err(&cw_bat->client->dev, "cw_bat_gpio_init error\n");
1232 ret = cw_init(cw_bat);
1234 pr_err("%s cw_init error\n", __func__);
1238 cw_bat->rk_bat.name = "rk-bat";
1239 cw_bat->rk_bat.type = POWER_SUPPLY_TYPE_BATTERY;
1240 cw_bat->rk_bat.properties = rk_battery_properties;
1241 cw_bat->rk_bat.num_properties = ARRAY_SIZE(rk_battery_properties);
1242 cw_bat->rk_bat.get_property = rk_battery_get_property;
1243 ret = power_supply_register(&client->dev, &cw_bat->rk_bat);
1245 dev_err(&cw_bat->client->dev,
1246 "power supply register rk_bat error\n");
1247 goto rk_bat_register_fail;
1250 cw_bat->rk_ac.name = "rk-ac";
1251 cw_bat->rk_ac.type = POWER_SUPPLY_TYPE_MAINS;
1252 cw_bat->rk_ac.properties = rk_ac_properties;
1253 cw_bat->rk_ac.num_properties = ARRAY_SIZE(rk_ac_properties);
1254 cw_bat->rk_ac.get_property = rk_ac_get_property;
1255 ret = power_supply_register(&client->dev, &cw_bat->rk_ac);
1257 dev_err(&cw_bat->client->dev,
1258 "power supply register rk_ac error\n");
1259 goto rk_ac_register_fail;
1262 if (cw_bat->plat_data.is_usb_charge == 1) {
1263 cw_bat->rk_usb.name = "rk-usb";
1264 cw_bat->rk_usb.type = POWER_SUPPLY_TYPE_USB;
1265 cw_bat->rk_usb.properties = rk_usb_properties;
1266 cw_bat->rk_usb.num_properties = ARRAY_SIZE(rk_usb_properties);
1267 cw_bat->rk_usb.get_property = rk_usb_get_property;
1268 ret = power_supply_register(&client->dev, &cw_bat->rk_usb);
1270 dev_err(&cw_bat->client->dev,
1271 "power supply register rk_usb error\n");
1272 goto rk_usb_register_fail;
1274 cw_bat->charger_init_mode = dwc_otg_check_dpdm();
1275 pr_info("%s cw2015 support charger by usb. usb_mode=%d\n",
1276 __func__, cw_bat->charger_init_mode);
1279 cw_bat->dc_online = 0;
1280 cw_bat->usb_online = 0;
1281 cw_bat->charger_mode = 0;
1282 cw_bat->capacity = 1;
1283 cw_bat->voltage = 0;
1285 cw_bat->time_to_empty = 0;
1286 cw_bat->bat_change = 0;
1288 cw_update_time_member_capacity_change(cw_bat);
1289 cw_update_time_member_charge_start(cw_bat);
1291 cw_bat->battery_workqueue = create_singlethread_workqueue("rk_battery");
1292 INIT_DELAYED_WORK(&cw_bat->battery_delay_work, cw_bat_work);
1293 INIT_DELAYED_WORK(&cw_bat->dc_wakeup_work, dc_detect_do_wakeup);
1294 queue_delayed_work(cw_bat->battery_workqueue,
1295 &cw_bat->battery_delay_work, msecs_to_jiffies(10));
1297 if (gpio_is_valid(cw_bat->plat_data.dc_det_pin)) {
1298 irq = gpio_to_irq(cw_bat->plat_data.dc_det_pin);
1299 level = gpio_get_value(cw_bat->plat_data.dc_det_pin);
1300 if (level == cw_bat->plat_data.dc_det_level) {
1301 pr_info("%s booting up with dc plug\n", __func__);
1302 cw_bat->status = POWER_SUPPLY_STATUS_CHARGING;
1304 irq_flags = level ? IRQF_TRIGGER_FALLING : IRQF_TRIGGER_RISING;
1306 request_irq(irq, dc_detect_irq_handler, irq_flags,
1307 "dc_detect", cw_bat);
1309 pr_err("%s: request_irq(%d) failed\n", __func__, irq);
1310 enable_irq_wake(irq);
1313 if (gpio_is_valid(cw_bat->plat_data.bat_low_pin)) {
1314 INIT_DELAYED_WORK(&cw_bat->bat_low_wakeup_work,
1315 bat_low_detect_do_wakeup);
1316 level = gpio_get_value(cw_bat->plat_data.bat_low_pin);
1317 if (level == cw_bat->plat_data.dc_det_level) {
1318 pr_info("%s booting up with lower power\n", __func__);
1319 cw_bat->capacity = 1;
1321 irq = gpio_to_irq(cw_bat->plat_data.bat_low_pin);
1323 request_irq(irq, bat_low_detect_irq_handler,
1324 IRQF_TRIGGER_RISING, "bat_low_detect", cw_bat);
1326 gpio_free(cw_bat->plat_data.bat_low_pin);
1328 enable_irq_wake(irq);
1331 dev_info(&cw_bat->client->dev,
1332 "cw2015/cw2013 driver v1.2 probe sucess\n");
1335 rk_usb_register_fail:
1336 power_supply_unregister(&cw_bat->rk_usb);
1337 rk_ac_register_fail:
1338 power_supply_unregister(&cw_bat->rk_ac);
1339 rk_bat_register_fail:
1340 power_supply_unregister(&cw_bat->rk_bat);
1342 dev_info(&cw_bat->client->dev,
1343 "cw2015/cw2013 driver v1.2 probe error!!!!\n");
1347 static int cw_bat_remove(struct i2c_client *client)
1349 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1351 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1352 cancel_delayed_work(&cw_bat->battery_delay_work);
1357 static int cw_bat_suspend(struct device *dev)
1359 struct i2c_client *client = to_i2c_client(dev);
1360 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1362 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1363 cancel_delayed_work(&cw_bat->battery_delay_work);
1367 static int cw_bat_resume(struct device *dev)
1369 struct i2c_client *client = to_i2c_client(dev);
1370 struct cw_battery *cw_bat = i2c_get_clientdata(client);
1372 dev_dbg(&cw_bat->client->dev, "%s\n", __func__);
1373 queue_delayed_work(cw_bat->battery_workqueue,
1374 &cw_bat->battery_delay_work, msecs_to_jiffies(100));
1378 static const struct i2c_device_id cw_id[] = {
1382 MODULE_DEVICE_TABLE(i2c, cw_id);
1384 static const struct dev_pm_ops cw_bat_pm_ops = {
1385 .suspend = cw_bat_suspend,
1386 .resume = cw_bat_resume,
1390 static struct i2c_driver cw_bat_driver = {
1394 .pm = &cw_bat_pm_ops,
1398 .probe = cw_bat_probe,
1399 .remove = cw_bat_remove,
1403 static int __init cw_bat_init(void)
1405 return i2c_add_driver(&cw_bat_driver);
1408 static void __exit cw_bat_exit(void)
1410 i2c_del_driver(&cw_bat_driver);
1413 fs_initcall(cw_bat_init);
1414 module_exit(cw_bat_exit);
1416 MODULE_AUTHOR("xhc<xhc@rock-chips.com>");
1417 MODULE_DESCRIPTION("cw2015/cw2013 battery driver");
1418 MODULE_LICENSE("GPL");