1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * bq2415x charger driver
5 * Copyright (C) 2011-2013 Pali Rohár <pali@kernel.org>
8 * https://www.ti.com/product/bq24150
9 * https://www.ti.com/product/bq24150a
10 * https://www.ti.com/product/bq24152
11 * https://www.ti.com/product/bq24153
12 * https://www.ti.com/product/bq24153a
13 * https://www.ti.com/product/bq24155
14 * https://www.ti.com/product/bq24157s
15 * https://www.ti.com/product/bq24158
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/param.h>
21 #include <linux/err.h>
22 #include <linux/workqueue.h>
23 #include <linux/sysfs.h>
24 #include <linux/platform_device.h>
25 #include <linux/power_supply.h>
26 #include <linux/idr.h>
27 #include <linux/i2c.h>
28 #include <linux/slab.h>
29 #include <linux/acpi.h>
31 #include <linux/power/bq2415x_charger.h>
33 /* timeout for resetting chip timer */
34 #define BQ2415X_TIMER_TIMEOUT 10
36 #define BQ2415X_REG_STATUS 0x00
37 #define BQ2415X_REG_CONTROL 0x01
38 #define BQ2415X_REG_VOLTAGE 0x02
39 #define BQ2415X_REG_VENDER 0x03
40 #define BQ2415X_REG_CURRENT 0x04
42 /* reset state for all registers */
43 #define BQ2415X_RESET_STATUS BIT(6)
44 #define BQ2415X_RESET_CONTROL (BIT(4)|BIT(5))
45 #define BQ2415X_RESET_VOLTAGE (BIT(1)|BIT(3))
46 #define BQ2415X_RESET_CURRENT (BIT(0)|BIT(3)|BIT(7))
49 #define BQ2415X_BIT_TMR_RST 7
50 #define BQ2415X_BIT_OTG 7
51 #define BQ2415X_BIT_EN_STAT 6
52 #define BQ2415X_MASK_STAT (BIT(4)|BIT(5))
53 #define BQ2415X_SHIFT_STAT 4
54 #define BQ2415X_BIT_BOOST 3
55 #define BQ2415X_MASK_FAULT (BIT(0)|BIT(1)|BIT(2))
56 #define BQ2415X_SHIFT_FAULT 0
58 /* control register */
59 #define BQ2415X_MASK_LIMIT (BIT(6)|BIT(7))
60 #define BQ2415X_SHIFT_LIMIT 6
61 #define BQ2415X_MASK_VLOWV (BIT(4)|BIT(5))
62 #define BQ2415X_SHIFT_VLOWV 4
63 #define BQ2415X_BIT_TE 3
64 #define BQ2415X_BIT_CE 2
65 #define BQ2415X_BIT_HZ_MODE 1
66 #define BQ2415X_BIT_OPA_MODE 0
68 /* voltage register */
69 #define BQ2415X_MASK_VO (BIT(2)|BIT(3)|BIT(4)|BIT(5)|BIT(6)|BIT(7))
70 #define BQ2415X_SHIFT_VO 2
71 #define BQ2415X_BIT_OTG_PL 1
72 #define BQ2415X_BIT_OTG_EN 0
75 #define BQ2415X_MASK_VENDER (BIT(5)|BIT(6)|BIT(7))
76 #define BQ2415X_SHIFT_VENDER 5
77 #define BQ2415X_MASK_PN (BIT(3)|BIT(4))
78 #define BQ2415X_SHIFT_PN 3
79 #define BQ2415X_MASK_REVISION (BIT(0)|BIT(1)|BIT(2))
80 #define BQ2415X_SHIFT_REVISION 0
82 /* current register */
83 #define BQ2415X_MASK_RESET BIT(7)
84 #define BQ2415X_MASK_VI_CHRG (BIT(4)|BIT(5)|BIT(6))
85 #define BQ2415X_SHIFT_VI_CHRG 4
87 #define BQ2415X_MASK_VI_TERM (BIT(0)|BIT(1)|BIT(2))
88 #define BQ2415X_SHIFT_VI_TERM 0
91 enum bq2415x_command {
94 BQ2415X_STAT_PIN_STATUS,
95 BQ2415X_STAT_PIN_ENABLE,
96 BQ2415X_STAT_PIN_DISABLE,
97 BQ2415X_CHARGE_STATUS,
101 BQ2415X_CHARGE_TERMINATION_STATUS,
102 BQ2415X_CHARGE_TERMINATION_ENABLE,
103 BQ2415X_CHARGE_TERMINATION_DISABLE,
104 BQ2415X_CHARGER_STATUS,
105 BQ2415X_CHARGER_ENABLE,
106 BQ2415X_CHARGER_DISABLE,
107 BQ2415X_HIGH_IMPEDANCE_STATUS,
108 BQ2415X_HIGH_IMPEDANCE_ENABLE,
109 BQ2415X_HIGH_IMPEDANCE_DISABLE,
110 BQ2415X_BOOST_MODE_STATUS,
111 BQ2415X_BOOST_MODE_ENABLE,
112 BQ2415X_BOOST_MODE_DISABLE,
115 BQ2415X_OTG_ACTIVATE_HIGH,
116 BQ2415X_OTG_ACTIVATE_LOW,
117 BQ2415X_OTG_PIN_STATUS,
118 BQ2415X_OTG_PIN_ENABLE,
119 BQ2415X_OTG_PIN_DISABLE,
142 static char *bq2415x_chip_name[] = {
158 struct bq2415x_device {
160 struct bq2415x_platform_data init_data;
161 struct power_supply *charger;
162 struct power_supply_desc charger_desc;
163 struct delayed_work work;
164 struct device_node *notify_node;
165 struct notifier_block nb;
166 enum bq2415x_mode reported_mode;/* mode reported by hook function */
167 enum bq2415x_mode mode; /* currently configured mode */
168 enum bq2415x_chip chip;
169 const char *timer_error;
172 int autotimer; /* 1 - if driver automatically reset timer, 0 - not */
173 int automode; /* 1 - enabled, 0 - disabled; -1 - not supported */
177 /* each registered chip must have unique id */
178 static DEFINE_IDR(bq2415x_id);
180 static DEFINE_MUTEX(bq2415x_id_mutex);
181 static DEFINE_MUTEX(bq2415x_timer_mutex);
182 static DEFINE_MUTEX(bq2415x_i2c_mutex);
184 /**** i2c read functions ****/
186 /* read value from register */
187 static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg)
189 struct i2c_client *client = to_i2c_client(bq->dev);
190 struct i2c_msg msg[2];
194 if (!client->adapter)
197 msg[0].addr = client->addr;
200 msg[0].len = sizeof(reg);
201 msg[1].addr = client->addr;
202 msg[1].flags = I2C_M_RD;
204 msg[1].len = sizeof(val);
206 mutex_lock(&bq2415x_i2c_mutex);
207 ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
208 mutex_unlock(&bq2415x_i2c_mutex);
216 /* read value from register, apply mask and right shift it */
217 static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg,
225 ret = bq2415x_i2c_read(bq, reg);
228 return (ret & mask) >> shift;
231 /* read value from register and return one specified bit */
232 static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit)
236 return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit);
239 /**** i2c write functions ****/
241 /* write value to register */
242 static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val)
244 struct i2c_client *client = to_i2c_client(bq->dev);
245 struct i2c_msg msg[1];
252 msg[0].addr = client->addr;
255 msg[0].len = ARRAY_SIZE(data);
257 mutex_lock(&bq2415x_i2c_mutex);
258 ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
259 mutex_unlock(&bq2415x_i2c_mutex);
261 /* i2c_transfer returns number of messages transferred */
270 /* read value from register, change it with mask left shifted and write back */
271 static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val,
279 ret = bq2415x_i2c_read(bq, reg);
286 return bq2415x_i2c_write(bq, reg, ret);
289 /* change only one bit in register */
290 static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg,
295 return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit);
298 /**** global functions ****/
300 /* exec command function */
301 static int bq2415x_exec_command(struct bq2415x_device *bq,
302 enum bq2415x_command command)
307 case BQ2415X_TIMER_RESET:
308 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS,
309 1, BQ2415X_BIT_TMR_RST);
310 case BQ2415X_OTG_STATUS:
311 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
313 case BQ2415X_STAT_PIN_STATUS:
314 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
315 BQ2415X_BIT_EN_STAT);
316 case BQ2415X_STAT_PIN_ENABLE:
317 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1,
318 BQ2415X_BIT_EN_STAT);
319 case BQ2415X_STAT_PIN_DISABLE:
320 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 0,
321 BQ2415X_BIT_EN_STAT);
322 case BQ2415X_CHARGE_STATUS:
323 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS,
324 BQ2415X_MASK_STAT, BQ2415X_SHIFT_STAT);
325 case BQ2415X_BOOST_STATUS:
326 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
328 case BQ2415X_FAULT_STATUS:
329 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS,
330 BQ2415X_MASK_FAULT, BQ2415X_SHIFT_FAULT);
332 case BQ2415X_CHARGE_TERMINATION_STATUS:
333 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
335 case BQ2415X_CHARGE_TERMINATION_ENABLE:
336 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
338 case BQ2415X_CHARGE_TERMINATION_DISABLE:
339 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
341 case BQ2415X_CHARGER_STATUS:
342 ret = bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
346 return ret > 0 ? 0 : 1;
347 case BQ2415X_CHARGER_ENABLE:
348 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
350 case BQ2415X_CHARGER_DISABLE:
351 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
353 case BQ2415X_HIGH_IMPEDANCE_STATUS:
354 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
355 BQ2415X_BIT_HZ_MODE);
356 case BQ2415X_HIGH_IMPEDANCE_ENABLE:
357 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
358 1, BQ2415X_BIT_HZ_MODE);
359 case BQ2415X_HIGH_IMPEDANCE_DISABLE:
360 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
361 0, BQ2415X_BIT_HZ_MODE);
362 case BQ2415X_BOOST_MODE_STATUS:
363 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
364 BQ2415X_BIT_OPA_MODE);
365 case BQ2415X_BOOST_MODE_ENABLE:
366 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
367 1, BQ2415X_BIT_OPA_MODE);
368 case BQ2415X_BOOST_MODE_DISABLE:
369 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
370 0, BQ2415X_BIT_OPA_MODE);
372 case BQ2415X_OTG_LEVEL:
373 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE,
375 case BQ2415X_OTG_ACTIVATE_HIGH:
376 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
377 1, BQ2415X_BIT_OTG_PL);
378 case BQ2415X_OTG_ACTIVATE_LOW:
379 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
380 0, BQ2415X_BIT_OTG_PL);
381 case BQ2415X_OTG_PIN_STATUS:
382 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE,
384 case BQ2415X_OTG_PIN_ENABLE:
385 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
386 1, BQ2415X_BIT_OTG_EN);
387 case BQ2415X_OTG_PIN_DISABLE:
388 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
389 0, BQ2415X_BIT_OTG_EN);
391 case BQ2415X_VENDER_CODE:
392 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
393 BQ2415X_MASK_VENDER, BQ2415X_SHIFT_VENDER);
394 case BQ2415X_PART_NUMBER:
395 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
396 BQ2415X_MASK_PN, BQ2415X_SHIFT_PN);
397 case BQ2415X_REVISION:
398 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
399 BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION);
404 /* detect chip type */
405 static enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq)
407 struct i2c_client *client = to_i2c_client(bq->dev);
408 int ret = bq2415x_exec_command(bq, BQ2415X_PART_NUMBER);
413 switch (client->addr) {
417 if (bq->chip == BQ24151A)
421 if (bq->chip == BQ24150A ||
422 bq->chip == BQ24152 ||
427 if (bq->chip == BQ24153A)
438 if (bq->chip == BQ24156A)
442 if (bq->chip == BQ24157S)
454 /* detect chip revision */
455 static int bq2415x_detect_revision(struct bq2415x_device *bq)
457 int ret = bq2415x_exec_command(bq, BQ2415X_REVISION);
458 int chip = bq2415x_detect_chip(bq);
460 if (ret < 0 || chip < 0)
469 if (ret >= 0 && ret <= 3)
494 /* return chip vender code */
495 static int bq2415x_get_vender_code(struct bq2415x_device *bq)
499 ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE);
503 /* convert to binary */
505 ((ret >> 1) & 0x1) * 10 +
506 ((ret >> 2) & 0x1) * 100;
509 /* reset all chip registers to default state */
510 static void bq2415x_reset_chip(struct bq2415x_device *bq)
512 bq2415x_i2c_write(bq, BQ2415X_REG_CURRENT, BQ2415X_RESET_CURRENT);
513 bq2415x_i2c_write(bq, BQ2415X_REG_VOLTAGE, BQ2415X_RESET_VOLTAGE);
514 bq2415x_i2c_write(bq, BQ2415X_REG_CONTROL, BQ2415X_RESET_CONTROL);
515 bq2415x_i2c_write(bq, BQ2415X_REG_STATUS, BQ2415X_RESET_STATUS);
516 bq->timer_error = NULL;
519 /**** properties functions ****/
521 /* set current limit in mA */
522 static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
535 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
536 BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
539 /* get current limit in mA */
540 static int bq2415x_get_current_limit(struct bq2415x_device *bq)
544 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
545 BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
559 /* set weak battery voltage in mV */
560 static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
567 else if (mV <= 3500 + 50)
569 else if (mV <= 3600 + 50)
574 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
575 BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
578 /* get weak battery voltage in mV */
579 static int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq)
583 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
584 BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
587 return 100 * (34 + ret);
590 /* set battery regulation voltage in mV */
591 static int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq,
594 int val = (mV/10 - 350) / 2;
597 * According to datasheet, maximum battery regulation voltage is
598 * 4440mV which is b101111 = 47.
605 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_VOLTAGE, val,
606 BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
609 /* get battery regulation voltage in mV */
610 static int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq)
612 int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE,
613 BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
617 return 10 * (350 + 2*ret);
620 /* set charge current in mA (platform data must provide resistor sense) */
621 static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA)
625 if (bq->init_data.resistor_sense <= 0)
628 val = (mA * bq->init_data.resistor_sense - 37400) / 6800;
634 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val,
635 BQ2415X_MASK_VI_CHRG | BQ2415X_MASK_RESET,
636 BQ2415X_SHIFT_VI_CHRG);
639 /* get charge current in mA (platform data must provide resistor sense) */
640 static int bq2415x_get_charge_current(struct bq2415x_device *bq)
644 if (bq->init_data.resistor_sense <= 0)
647 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
648 BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG);
651 return (37400 + 6800*ret) / bq->init_data.resistor_sense;
654 /* set termination current in mA (platform data must provide resistor sense) */
655 static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA)
659 if (bq->init_data.resistor_sense <= 0)
662 val = (mA * bq->init_data.resistor_sense - 3400) / 3400;
668 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val,
669 BQ2415X_MASK_VI_TERM | BQ2415X_MASK_RESET,
670 BQ2415X_SHIFT_VI_TERM);
673 /* get termination current in mA (platform data must provide resistor sense) */
674 static int bq2415x_get_termination_current(struct bq2415x_device *bq)
678 if (bq->init_data.resistor_sense <= 0)
681 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
682 BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM);
685 return (3400 + 3400*ret) / bq->init_data.resistor_sense;
688 /* set default value of property */
689 #define bq2415x_set_default_value(bq, prop) \
692 if (bq->init_data.prop != -1) \
693 ret = bq2415x_set_##prop(bq, bq->init_data.prop); \
698 /* set default values of all properties */
699 static int bq2415x_set_defaults(struct bq2415x_device *bq)
701 bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE);
702 bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
703 bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_DISABLE);
705 bq2415x_set_default_value(bq, current_limit);
706 bq2415x_set_default_value(bq, weak_battery_voltage);
707 bq2415x_set_default_value(bq, battery_regulation_voltage);
709 if (bq->init_data.resistor_sense > 0) {
710 bq2415x_set_default_value(bq, charge_current);
711 bq2415x_set_default_value(bq, termination_current);
712 bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_ENABLE);
715 bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE);
719 /**** charger mode functions ****/
721 /* set charger mode */
722 static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
728 if (mode == BQ2415X_MODE_BOOST)
730 else if (mode != BQ2415X_MODE_OFF)
734 ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
737 ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE);
743 case BQ2415X_MODE_OFF:
744 dev_dbg(bq->dev, "changing mode to: Offline\n");
745 ret = bq2415x_set_current_limit(bq, 100);
747 case BQ2415X_MODE_NONE:
748 dev_dbg(bq->dev, "changing mode to: N/A\n");
749 ret = bq2415x_set_current_limit(bq, 100);
751 case BQ2415X_MODE_HOST_CHARGER:
752 dev_dbg(bq->dev, "changing mode to: Host/HUB charger\n");
753 ret = bq2415x_set_current_limit(bq, 500);
755 case BQ2415X_MODE_DEDICATED_CHARGER:
756 dev_dbg(bq->dev, "changing mode to: Dedicated charger\n");
757 ret = bq2415x_set_current_limit(bq, 1800);
759 case BQ2415X_MODE_BOOST: /* Boost mode */
760 dev_dbg(bq->dev, "changing mode to: Boost\n");
761 ret = bq2415x_set_current_limit(bq, 100);
769 ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE);
771 ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_ENABLE);
776 bq2415x_set_default_value(bq, weak_battery_voltage);
777 bq2415x_set_default_value(bq, battery_regulation_voltage);
780 sysfs_notify(&bq->charger->dev.kobj, NULL, "mode");
786 static bool bq2415x_update_reported_mode(struct bq2415x_device *bq, int mA)
788 enum bq2415x_mode mode;
791 mode = BQ2415X_MODE_OFF;
793 mode = BQ2415X_MODE_NONE;
795 mode = BQ2415X_MODE_HOST_CHARGER;
797 mode = BQ2415X_MODE_DEDICATED_CHARGER;
799 if (bq->reported_mode == mode)
802 bq->reported_mode = mode;
806 static int bq2415x_notifier_call(struct notifier_block *nb,
807 unsigned long val, void *v)
809 struct bq2415x_device *bq =
810 container_of(nb, struct bq2415x_device, nb);
811 struct power_supply *psy = v;
812 union power_supply_propval prop;
815 if (val != PSY_EVENT_PROP_CHANGED)
818 /* Ignore event if it was not send by notify_node/notify_device */
819 if (bq->notify_node) {
820 if (!psy->dev.parent ||
821 psy->dev.parent->of_node != bq->notify_node)
823 } else if (bq->init_data.notify_device) {
824 if (strcmp(psy->desc->name, bq->init_data.notify_device) != 0)
828 dev_dbg(bq->dev, "notifier call was called\n");
830 ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_CURRENT_MAX,
835 if (!bq2415x_update_reported_mode(bq, prop.intval))
838 /* if automode is not enabled do not tell about reported_mode */
839 if (bq->automode < 1)
842 schedule_delayed_work(&bq->work, 0);
847 /**** timer functions ****/
849 /* enable/disable auto resetting chip timer */
850 static void bq2415x_set_autotimer(struct bq2415x_device *bq, int state)
852 mutex_lock(&bq2415x_timer_mutex);
854 if (bq->autotimer == state) {
855 mutex_unlock(&bq2415x_timer_mutex);
859 bq->autotimer = state;
862 schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ);
863 bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
864 bq->timer_error = NULL;
866 cancel_delayed_work_sync(&bq->work);
869 mutex_unlock(&bq2415x_timer_mutex);
872 /* called by bq2415x_timer_work on timer error */
873 static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg)
875 bq->timer_error = msg;
876 sysfs_notify(&bq->charger->dev.kobj, NULL, "timer");
877 dev_err(bq->dev, "%s\n", msg);
878 if (bq->automode > 0)
880 bq2415x_set_mode(bq, BQ2415X_MODE_OFF);
881 bq2415x_set_autotimer(bq, 0);
884 /* delayed work function for auto resetting chip timer */
885 static void bq2415x_timer_work(struct work_struct *work)
887 struct bq2415x_device *bq = container_of(work, struct bq2415x_device,
893 if (bq->automode > 0 && (bq->reported_mode != bq->mode)) {
894 sysfs_notify(&bq->charger->dev.kobj, NULL, "reported_mode");
895 bq2415x_set_mode(bq, bq->reported_mode);
901 ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
903 bq2415x_timer_error(bq, "Resetting timer failed");
907 boost = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_STATUS);
909 bq2415x_timer_error(bq, "Unknown error");
913 error = bq2415x_exec_command(bq, BQ2415X_FAULT_STATUS);
915 bq2415x_timer_error(bq, "Unknown error");
921 /* Non fatal errors, chip is OK */
922 case 0: /* No error */
924 case 6: /* Timer expired */
925 dev_err(bq->dev, "Timer expired\n");
927 case 3: /* Battery voltage too low */
928 dev_err(bq->dev, "Battery voltage to low\n");
931 /* Fatal errors, disable and reset chip */
932 case 1: /* Overvoltage protection (chip fried) */
933 bq2415x_timer_error(bq,
934 "Overvoltage protection (chip fried)");
936 case 2: /* Overload */
937 bq2415x_timer_error(bq, "Overload");
939 case 4: /* Battery overvoltage protection */
940 bq2415x_timer_error(bq,
941 "Battery overvoltage protection");
943 case 5: /* Thermal shutdown (too hot) */
944 bq2415x_timer_error(bq,
945 "Thermal shutdown (too hot)");
948 bq2415x_timer_error(bq, "Unknown error");
953 /* Non fatal errors, chip is OK */
954 case 0: /* No error */
956 case 2: /* Sleep mode */
957 dev_err(bq->dev, "Sleep mode\n");
959 case 3: /* Poor input source */
960 dev_err(bq->dev, "Poor input source\n");
962 case 6: /* Timer expired */
963 dev_err(bq->dev, "Timer expired\n");
965 case 7: /* No battery */
966 dev_err(bq->dev, "No battery\n");
969 /* Fatal errors, disable and reset chip */
970 case 1: /* Overvoltage protection (chip fried) */
971 bq2415x_timer_error(bq,
972 "Overvoltage protection (chip fried)");
974 case 4: /* Battery overvoltage protection */
975 bq2415x_timer_error(bq,
976 "Battery overvoltage protection");
978 case 5: /* Thermal shutdown (too hot) */
979 bq2415x_timer_error(bq,
980 "Thermal shutdown (too hot)");
985 schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ);
988 /**** power supply interface code ****/
990 static enum power_supply_property bq2415x_power_supply_props[] = {
991 /* TODO: maybe add more power supply properties */
992 POWER_SUPPLY_PROP_STATUS,
993 POWER_SUPPLY_PROP_MODEL_NAME,
996 static int bq2415x_power_supply_get_property(struct power_supply *psy,
997 enum power_supply_property psp,
998 union power_supply_propval *val)
1000 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1004 case POWER_SUPPLY_PROP_STATUS:
1005 ret = bq2415x_exec_command(bq, BQ2415X_CHARGE_STATUS);
1008 else if (ret == 0) /* Ready */
1009 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1010 else if (ret == 1) /* Charge in progress */
1011 val->intval = POWER_SUPPLY_STATUS_CHARGING;
1012 else if (ret == 2) /* Charge done */
1013 val->intval = POWER_SUPPLY_STATUS_FULL;
1015 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
1017 case POWER_SUPPLY_PROP_MODEL_NAME:
1018 val->strval = bq->model;
1026 static void bq2415x_power_supply_exit(struct bq2415x_device *bq)
1029 if (bq->automode > 0)
1031 cancel_delayed_work_sync(&bq->work);
1032 power_supply_unregister(bq->charger);
1036 /**** additional sysfs entries for power supply interface ****/
1038 /* show *_status entries */
1039 static ssize_t bq2415x_sysfs_show_status(struct device *dev,
1040 struct device_attribute *attr,
1043 struct power_supply *psy = dev_get_drvdata(dev);
1044 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1045 enum bq2415x_command command;
1048 if (strcmp(attr->attr.name, "otg_status") == 0)
1049 command = BQ2415X_OTG_STATUS;
1050 else if (strcmp(attr->attr.name, "charge_status") == 0)
1051 command = BQ2415X_CHARGE_STATUS;
1052 else if (strcmp(attr->attr.name, "boost_status") == 0)
1053 command = BQ2415X_BOOST_STATUS;
1054 else if (strcmp(attr->attr.name, "fault_status") == 0)
1055 command = BQ2415X_FAULT_STATUS;
1059 ret = bq2415x_exec_command(bq, command);
1062 return sprintf(buf, "%d\n", ret);
1067 * auto - enable auto mode
1068 * off - disable auto mode
1069 * (other values) - reset chip timer
1071 static ssize_t bq2415x_sysfs_set_timer(struct device *dev,
1072 struct device_attribute *attr,
1076 struct power_supply *psy = dev_get_drvdata(dev);
1077 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1080 if (strncmp(buf, "auto", 4) == 0)
1081 bq2415x_set_autotimer(bq, 1);
1082 else if (strncmp(buf, "off", 3) == 0)
1083 bq2415x_set_autotimer(bq, 0);
1085 ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
1092 /* show timer entry (auto or off) */
1093 static ssize_t bq2415x_sysfs_show_timer(struct device *dev,
1094 struct device_attribute *attr,
1097 struct power_supply *psy = dev_get_drvdata(dev);
1098 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1100 if (bq->timer_error)
1101 return sprintf(buf, "%s\n", bq->timer_error);
1104 return sprintf(buf, "auto\n");
1105 return sprintf(buf, "off\n");
1110 * auto - if automode is supported, enable it and set mode to reported
1111 * none - disable charger and boost mode
1112 * host - charging mode for host/hub chargers (current limit 500mA)
1113 * dedicated - charging mode for dedicated chargers (unlimited current limit)
1114 * boost - disable charger and enable boost mode
1116 static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
1117 struct device_attribute *attr,
1121 struct power_supply *psy = dev_get_drvdata(dev);
1122 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1123 enum bq2415x_mode mode;
1126 if (strncmp(buf, "auto", 4) == 0) {
1127 if (bq->automode < 0)
1130 mode = bq->reported_mode;
1131 } else if (strncmp(buf, "off", 3) == 0) {
1132 if (bq->automode > 0)
1134 mode = BQ2415X_MODE_OFF;
1135 } else if (strncmp(buf, "none", 4) == 0) {
1136 if (bq->automode > 0)
1138 mode = BQ2415X_MODE_NONE;
1139 } else if (strncmp(buf, "host", 4) == 0) {
1140 if (bq->automode > 0)
1142 mode = BQ2415X_MODE_HOST_CHARGER;
1143 } else if (strncmp(buf, "dedicated", 9) == 0) {
1144 if (bq->automode > 0)
1146 mode = BQ2415X_MODE_DEDICATED_CHARGER;
1147 } else if (strncmp(buf, "boost", 5) == 0) {
1148 if (bq->automode > 0)
1150 mode = BQ2415X_MODE_BOOST;
1151 } else if (strncmp(buf, "reset", 5) == 0) {
1152 bq2415x_reset_chip(bq);
1153 bq2415x_set_defaults(bq);
1154 if (bq->automode <= 0)
1157 mode = bq->reported_mode;
1162 ret = bq2415x_set_mode(bq, mode);
1168 /* show mode entry (auto, none, host, dedicated or boost) */
1169 static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
1170 struct device_attribute *attr,
1173 struct power_supply *psy = dev_get_drvdata(dev);
1174 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1177 if (bq->automode > 0)
1178 ret += sprintf(buf+ret, "auto (");
1181 case BQ2415X_MODE_OFF:
1182 ret += sprintf(buf+ret, "off");
1184 case BQ2415X_MODE_NONE:
1185 ret += sprintf(buf+ret, "none");
1187 case BQ2415X_MODE_HOST_CHARGER:
1188 ret += sprintf(buf+ret, "host");
1190 case BQ2415X_MODE_DEDICATED_CHARGER:
1191 ret += sprintf(buf+ret, "dedicated");
1193 case BQ2415X_MODE_BOOST:
1194 ret += sprintf(buf+ret, "boost");
1198 if (bq->automode > 0)
1199 ret += sprintf(buf+ret, ")");
1201 ret += sprintf(buf+ret, "\n");
1205 /* show reported_mode entry (none, host, dedicated or boost) */
1206 static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
1207 struct device_attribute *attr,
1210 struct power_supply *psy = dev_get_drvdata(dev);
1211 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1213 if (bq->automode < 0)
1216 switch (bq->reported_mode) {
1217 case BQ2415X_MODE_OFF:
1218 return sprintf(buf, "off\n");
1219 case BQ2415X_MODE_NONE:
1220 return sprintf(buf, "none\n");
1221 case BQ2415X_MODE_HOST_CHARGER:
1222 return sprintf(buf, "host\n");
1223 case BQ2415X_MODE_DEDICATED_CHARGER:
1224 return sprintf(buf, "dedicated\n");
1225 case BQ2415X_MODE_BOOST:
1226 return sprintf(buf, "boost\n");
1232 /* directly set raw value to chip register, format: 'register value' */
1233 static ssize_t bq2415x_sysfs_set_registers(struct device *dev,
1234 struct device_attribute *attr,
1238 struct power_supply *psy = dev_get_drvdata(dev);
1239 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1244 if (sscanf(buf, "%x %x", ®, &val) != 2)
1247 if (reg > 4 || val > 255)
1250 ret = bq2415x_i2c_write(bq, reg, val);
1256 /* print value of chip register, format: 'register=value' */
1257 static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq,
1261 int ret = bq2415x_i2c_read(bq, reg);
1264 return sprintf(buf, "%#.2x=error %d\n", reg, ret);
1265 return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
1268 /* show all raw values of chip register, format per line: 'register=value' */
1269 static ssize_t bq2415x_sysfs_show_registers(struct device *dev,
1270 struct device_attribute *attr,
1273 struct power_supply *psy = dev_get_drvdata(dev);
1274 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1277 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_STATUS, buf+ret);
1278 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CONTROL, buf+ret);
1279 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VOLTAGE, buf+ret);
1280 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VENDER, buf+ret);
1281 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CURRENT, buf+ret);
1285 /* set current and voltage limit entries (in mA or mV) */
1286 static ssize_t bq2415x_sysfs_set_limit(struct device *dev,
1287 struct device_attribute *attr,
1291 struct power_supply *psy = dev_get_drvdata(dev);
1292 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1296 if (kstrtol(buf, 10, &val) < 0)
1299 if (strcmp(attr->attr.name, "current_limit") == 0)
1300 ret = bq2415x_set_current_limit(bq, val);
1301 else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0)
1302 ret = bq2415x_set_weak_battery_voltage(bq, val);
1303 else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0)
1304 ret = bq2415x_set_battery_regulation_voltage(bq, val);
1305 else if (strcmp(attr->attr.name, "charge_current") == 0)
1306 ret = bq2415x_set_charge_current(bq, val);
1307 else if (strcmp(attr->attr.name, "termination_current") == 0)
1308 ret = bq2415x_set_termination_current(bq, val);
1317 /* show current and voltage limit entries (in mA or mV) */
1318 static ssize_t bq2415x_sysfs_show_limit(struct device *dev,
1319 struct device_attribute *attr,
1322 struct power_supply *psy = dev_get_drvdata(dev);
1323 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1326 if (strcmp(attr->attr.name, "current_limit") == 0)
1327 ret = bq2415x_get_current_limit(bq);
1328 else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0)
1329 ret = bq2415x_get_weak_battery_voltage(bq);
1330 else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0)
1331 ret = bq2415x_get_battery_regulation_voltage(bq);
1332 else if (strcmp(attr->attr.name, "charge_current") == 0)
1333 ret = bq2415x_get_charge_current(bq);
1334 else if (strcmp(attr->attr.name, "termination_current") == 0)
1335 ret = bq2415x_get_termination_current(bq);
1341 return sprintf(buf, "%d\n", ret);
1344 /* set *_enable entries */
1345 static ssize_t bq2415x_sysfs_set_enable(struct device *dev,
1346 struct device_attribute *attr,
1350 struct power_supply *psy = dev_get_drvdata(dev);
1351 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1352 enum bq2415x_command command;
1356 if (kstrtol(buf, 10, &val) < 0)
1359 if (strcmp(attr->attr.name, "charge_termination_enable") == 0)
1360 command = val ? BQ2415X_CHARGE_TERMINATION_ENABLE :
1361 BQ2415X_CHARGE_TERMINATION_DISABLE;
1362 else if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
1363 command = val ? BQ2415X_HIGH_IMPEDANCE_ENABLE :
1364 BQ2415X_HIGH_IMPEDANCE_DISABLE;
1365 else if (strcmp(attr->attr.name, "otg_pin_enable") == 0)
1366 command = val ? BQ2415X_OTG_PIN_ENABLE :
1367 BQ2415X_OTG_PIN_DISABLE;
1368 else if (strcmp(attr->attr.name, "stat_pin_enable") == 0)
1369 command = val ? BQ2415X_STAT_PIN_ENABLE :
1370 BQ2415X_STAT_PIN_DISABLE;
1374 ret = bq2415x_exec_command(bq, command);
1380 /* show *_enable entries */
1381 static ssize_t bq2415x_sysfs_show_enable(struct device *dev,
1382 struct device_attribute *attr,
1385 struct power_supply *psy = dev_get_drvdata(dev);
1386 struct bq2415x_device *bq = power_supply_get_drvdata(psy);
1387 enum bq2415x_command command;
1390 if (strcmp(attr->attr.name, "charge_termination_enable") == 0)
1391 command = BQ2415X_CHARGE_TERMINATION_STATUS;
1392 else if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
1393 command = BQ2415X_HIGH_IMPEDANCE_STATUS;
1394 else if (strcmp(attr->attr.name, "otg_pin_enable") == 0)
1395 command = BQ2415X_OTG_PIN_STATUS;
1396 else if (strcmp(attr->attr.name, "stat_pin_enable") == 0)
1397 command = BQ2415X_STAT_PIN_STATUS;
1401 ret = bq2415x_exec_command(bq, command);
1404 return sprintf(buf, "%d\n", ret);
1407 static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO,
1408 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1409 static DEVICE_ATTR(weak_battery_voltage, S_IWUSR | S_IRUGO,
1410 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1411 static DEVICE_ATTR(battery_regulation_voltage, S_IWUSR | S_IRUGO,
1412 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1413 static DEVICE_ATTR(charge_current, S_IWUSR | S_IRUGO,
1414 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1415 static DEVICE_ATTR(termination_current, S_IWUSR | S_IRUGO,
1416 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1418 static DEVICE_ATTR(charge_termination_enable, S_IWUSR | S_IRUGO,
1419 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1420 static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO,
1421 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1422 static DEVICE_ATTR(otg_pin_enable, S_IWUSR | S_IRUGO,
1423 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1424 static DEVICE_ATTR(stat_pin_enable, S_IWUSR | S_IRUGO,
1425 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1427 static DEVICE_ATTR(reported_mode, S_IRUGO,
1428 bq2415x_sysfs_show_reported_mode, NULL);
1429 static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO,
1430 bq2415x_sysfs_show_mode, bq2415x_sysfs_set_mode);
1431 static DEVICE_ATTR(timer, S_IWUSR | S_IRUGO,
1432 bq2415x_sysfs_show_timer, bq2415x_sysfs_set_timer);
1434 static DEVICE_ATTR(registers, S_IWUSR | S_IRUGO,
1435 bq2415x_sysfs_show_registers, bq2415x_sysfs_set_registers);
1437 static DEVICE_ATTR(otg_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1438 static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1439 static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1440 static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1442 static struct attribute *bq2415x_sysfs_attrs[] = {
1444 * TODO: some (appropriate) of these attrs should be switched to
1445 * use power supply class props.
1447 &dev_attr_current_limit.attr,
1448 &dev_attr_weak_battery_voltage.attr,
1449 &dev_attr_battery_regulation_voltage.attr,
1450 &dev_attr_charge_current.attr,
1451 &dev_attr_termination_current.attr,
1453 &dev_attr_charge_termination_enable.attr,
1454 &dev_attr_high_impedance_enable.attr,
1455 &dev_attr_otg_pin_enable.attr,
1456 &dev_attr_stat_pin_enable.attr,
1458 &dev_attr_reported_mode.attr,
1459 &dev_attr_mode.attr,
1460 &dev_attr_timer.attr,
1462 &dev_attr_registers.attr,
1464 &dev_attr_otg_status.attr,
1465 &dev_attr_charge_status.attr,
1466 &dev_attr_boost_status.attr,
1467 &dev_attr_fault_status.attr,
1471 ATTRIBUTE_GROUPS(bq2415x_sysfs);
1473 static int bq2415x_power_supply_init(struct bq2415x_device *bq)
1478 struct power_supply_config psy_cfg = {
1480 .of_node = bq->dev->of_node,
1481 .attr_grp = bq2415x_sysfs_groups,
1484 bq->charger_desc.name = bq->name;
1485 bq->charger_desc.type = POWER_SUPPLY_TYPE_USB;
1486 bq->charger_desc.properties = bq2415x_power_supply_props;
1487 bq->charger_desc.num_properties =
1488 ARRAY_SIZE(bq2415x_power_supply_props);
1489 bq->charger_desc.get_property = bq2415x_power_supply_get_property;
1491 ret = bq2415x_detect_chip(bq);
1497 ret = bq2415x_detect_revision(bq);
1499 strcpy(revstr, "unknown");
1501 sprintf(revstr, "1.%d", ret);
1503 bq->model = kasprintf(GFP_KERNEL,
1504 "chip %s, revision %s, vender code %.3d",
1505 bq2415x_chip_name[chip], revstr,
1506 bq2415x_get_vender_code(bq));
1508 dev_err(bq->dev, "failed to allocate model name\n");
1512 bq->charger = power_supply_register(bq->dev, &bq->charger_desc,
1514 if (IS_ERR(bq->charger)) {
1516 return PTR_ERR(bq->charger);
1522 /* main bq2415x probe function */
1523 static int bq2415x_probe(struct i2c_client *client,
1524 const struct i2c_device_id *id)
1529 struct bq2415x_device *bq;
1530 struct device_node *np = client->dev.of_node;
1531 struct bq2415x_platform_data *pdata = client->dev.platform_data;
1532 const struct acpi_device_id *acpi_id = NULL;
1533 struct power_supply *notify_psy = NULL;
1534 union power_supply_propval prop;
1536 if (!np && !pdata && !ACPI_HANDLE(&client->dev)) {
1537 dev_err(&client->dev, "Neither devicetree, nor platform data, nor ACPI support\n");
1541 /* Get new ID for the new device */
1542 mutex_lock(&bq2415x_id_mutex);
1543 num = idr_alloc(&bq2415x_id, client, 0, 0, GFP_KERNEL);
1544 mutex_unlock(&bq2415x_id_mutex);
1549 name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
1550 } else if (ACPI_HANDLE(&client->dev)) {
1552 acpi_match_device(client->dev.driver->acpi_match_table,
1555 dev_err(&client->dev, "failed to match device name\n");
1559 name = kasprintf(GFP_KERNEL, "%s-%d", acpi_id->id, num);
1562 dev_err(&client->dev, "failed to allocate device name\n");
1567 bq = devm_kzalloc(&client->dev, sizeof(*bq), GFP_KERNEL);
1573 i2c_set_clientdata(client, bq);
1576 bq->dev = &client->dev;
1578 bq->chip = id->driver_data;
1579 else if (ACPI_HANDLE(bq->dev))
1580 bq->chip = acpi_id->driver_data;
1582 bq->mode = BQ2415X_MODE_OFF;
1583 bq->reported_mode = BQ2415X_MODE_OFF;
1587 if (np || ACPI_HANDLE(bq->dev)) {
1588 ret = device_property_read_u32(bq->dev,
1590 &bq->init_data.current_limit);
1593 ret = device_property_read_u32(bq->dev,
1594 "ti,weak-battery-voltage",
1595 &bq->init_data.weak_battery_voltage);
1598 ret = device_property_read_u32(bq->dev,
1599 "ti,battery-regulation-voltage",
1600 &bq->init_data.battery_regulation_voltage);
1603 ret = device_property_read_u32(bq->dev,
1604 "ti,charge-current",
1605 &bq->init_data.charge_current);
1608 ret = device_property_read_u32(bq->dev,
1609 "ti,termination-current",
1610 &bq->init_data.termination_current);
1613 ret = device_property_read_u32(bq->dev,
1614 "ti,resistor-sense",
1615 &bq->init_data.resistor_sense);
1619 bq->notify_node = of_parse_phandle(np,
1620 "ti,usb-charger-detection", 0);
1622 memcpy(&bq->init_data, pdata, sizeof(bq->init_data));
1625 bq2415x_reset_chip(bq);
1627 ret = bq2415x_power_supply_init(bq);
1629 dev_err(bq->dev, "failed to register power supply: %d\n", ret);
1633 ret = bq2415x_set_defaults(bq);
1635 dev_err(bq->dev, "failed to set default values: %d\n", ret);
1639 if (bq->notify_node || bq->init_data.notify_device) {
1640 bq->nb.notifier_call = bq2415x_notifier_call;
1641 ret = power_supply_reg_notifier(&bq->nb);
1643 dev_err(bq->dev, "failed to reg notifier: %d\n", ret);
1648 dev_info(bq->dev, "automode supported, waiting for events\n");
1651 dev_info(bq->dev, "automode not supported\n");
1654 /* Query for initial reported_mode and set it */
1655 if (bq->nb.notifier_call) {
1657 notify_psy = power_supply_get_by_phandle(np,
1658 "ti,usb-charger-detection");
1659 if (IS_ERR(notify_psy))
1661 } else if (bq->init_data.notify_device) {
1662 notify_psy = power_supply_get_by_name(
1663 bq->init_data.notify_device);
1667 ret = power_supply_get_property(notify_psy,
1668 POWER_SUPPLY_PROP_CURRENT_MAX, &prop);
1669 power_supply_put(notify_psy);
1672 bq2415x_update_reported_mode(bq, prop.intval);
1673 bq2415x_set_mode(bq, bq->reported_mode);
1677 INIT_DELAYED_WORK(&bq->work, bq2415x_timer_work);
1678 bq2415x_set_autotimer(bq, 1);
1680 dev_info(bq->dev, "driver registered\n");
1684 bq2415x_power_supply_exit(bq);
1687 of_node_put(bq->notify_node);
1690 mutex_lock(&bq2415x_id_mutex);
1691 idr_remove(&bq2415x_id, num);
1692 mutex_unlock(&bq2415x_id_mutex);
1697 /* main bq2415x remove function */
1699 static void bq2415x_remove(struct i2c_client *client)
1701 struct bq2415x_device *bq = i2c_get_clientdata(client);
1703 if (bq->nb.notifier_call)
1704 power_supply_unreg_notifier(&bq->nb);
1706 of_node_put(bq->notify_node);
1707 bq2415x_power_supply_exit(bq);
1709 bq2415x_reset_chip(bq);
1711 mutex_lock(&bq2415x_id_mutex);
1712 idr_remove(&bq2415x_id, bq->id);
1713 mutex_unlock(&bq2415x_id_mutex);
1715 dev_info(bq->dev, "driver unregistered\n");
1720 static const struct i2c_device_id bq2415x_i2c_id_table[] = {
1721 { "bq2415x", BQUNKNOWN },
1722 { "bq24150", BQ24150 },
1723 { "bq24150a", BQ24150A },
1724 { "bq24151", BQ24151 },
1725 { "bq24151a", BQ24151A },
1726 { "bq24152", BQ24152 },
1727 { "bq24153", BQ24153 },
1728 { "bq24153a", BQ24153A },
1729 { "bq24155", BQ24155 },
1730 { "bq24156", BQ24156 },
1731 { "bq24156a", BQ24156A },
1732 { "bq24157s", BQ24157S },
1733 { "bq24158", BQ24158 },
1736 MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table);
1739 static const struct acpi_device_id bq2415x_i2c_acpi_match[] = {
1740 { "BQ2415X", BQUNKNOWN },
1741 { "BQ241500", BQ24150 },
1742 { "BQA24150", BQ24150A },
1743 { "BQ241510", BQ24151 },
1744 { "BQA24151", BQ24151A },
1745 { "BQ241520", BQ24152 },
1746 { "BQ241530", BQ24153 },
1747 { "BQA24153", BQ24153A },
1748 { "BQ241550", BQ24155 },
1749 { "BQ241560", BQ24156 },
1750 { "BQA24156", BQ24156A },
1751 { "BQS24157", BQ24157S },
1752 { "BQ241580", BQ24158 },
1755 MODULE_DEVICE_TABLE(acpi, bq2415x_i2c_acpi_match);
1759 static const struct of_device_id bq2415x_of_match_table[] = {
1760 { .compatible = "ti,bq24150" },
1761 { .compatible = "ti,bq24150a" },
1762 { .compatible = "ti,bq24151" },
1763 { .compatible = "ti,bq24151a" },
1764 { .compatible = "ti,bq24152" },
1765 { .compatible = "ti,bq24153" },
1766 { .compatible = "ti,bq24153a" },
1767 { .compatible = "ti,bq24155" },
1768 { .compatible = "ti,bq24156" },
1769 { .compatible = "ti,bq24156a" },
1770 { .compatible = "ti,bq24157s" },
1771 { .compatible = "ti,bq24158" },
1774 MODULE_DEVICE_TABLE(of, bq2415x_of_match_table);
1777 static struct i2c_driver bq2415x_driver = {
1779 .name = "bq2415x-charger",
1780 .of_match_table = of_match_ptr(bq2415x_of_match_table),
1781 .acpi_match_table = ACPI_PTR(bq2415x_i2c_acpi_match),
1783 .probe = bq2415x_probe,
1784 .remove = bq2415x_remove,
1785 .id_table = bq2415x_i2c_id_table,
1787 module_i2c_driver(bq2415x_driver);
1789 MODULE_AUTHOR("Pali Rohár <pali@kernel.org>");
1790 MODULE_DESCRIPTION("bq2415x charger driver");
1791 MODULE_LICENSE("GPL");