2 bq2415x_charger.c - bq2415x charger driver
3 Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 http://www.ti.com/product/bq24150
23 http://www.ti.com/product/bq24150a
24 http://www.ti.com/product/bq24152
25 http://www.ti.com/product/bq24153
26 http://www.ti.com/product/bq24153a
27 http://www.ti.com/product/bq24155
30 #include <linux/version.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/param.h>
34 #include <linux/err.h>
35 #include <linux/workqueue.h>
36 #include <linux/sysfs.h>
37 #include <linux/platform_device.h>
38 #include <linux/power_supply.h>
39 #include <linux/idr.h>
40 #include <linux/i2c.h>
41 #include <linux/slab.h>
43 #include <linux/power/bq2415x_charger.h>
45 /* timeout for resetting chip timer */
46 #define BQ2415X_TIMER_TIMEOUT 10
48 #define BQ2415X_REG_STATUS 0x00
49 #define BQ2415X_REG_CONTROL 0x01
50 #define BQ2415X_REG_VOLTAGE 0x02
51 #define BQ2415X_REG_VENDER 0x03
52 #define BQ2415X_REG_CURRENT 0x04
54 /* reset state for all registers */
55 #define BQ2415X_RESET_STATUS BIT(6)
56 #define BQ2415X_RESET_CONTROL (BIT(4)|BIT(5))
57 #define BQ2415X_RESET_VOLTAGE (BIT(1)|BIT(3))
58 #define BQ2415X_RESET_CURRENT (BIT(0)|BIT(3)|BIT(7))
61 #define BQ2415X_BIT_TMR_RST 7
62 #define BQ2415X_BIT_OTG 7
63 #define BQ2415X_BIT_EN_STAT 6
64 #define BQ2415X_MASK_STAT (BIT(4)|BIT(5))
65 #define BQ2415X_SHIFT_STAT 4
66 #define BQ2415X_BIT_BOOST 3
67 #define BQ2415X_MASK_FAULT (BIT(0)|BIT(1)|BIT(2))
68 #define BQ2415X_SHIFT_FAULT 0
70 /* control register */
71 #define BQ2415X_MASK_LIMIT (BIT(6)|BIT(7))
72 #define BQ2415X_SHIFT_LIMIT 6
73 #define BQ2415X_MASK_VLOWV (BIT(4)|BIT(5))
74 #define BQ2415X_SHIFT_VLOWV 4
75 #define BQ2415X_BIT_TE 3
76 #define BQ2415X_BIT_CE 2
77 #define BQ2415X_BIT_HZ_MODE 1
78 #define BQ2415X_BIT_OPA_MODE 0
80 /* voltage register */
81 #define BQ2415X_MASK_VO (BIT(2)|BIT(3)|BIT(4)|BIT(5)|BIT(6)|BIT(7))
82 #define BQ2415X_SHIFT_VO 2
83 #define BQ2415X_BIT_OTG_PL 1
84 #define BQ2415X_BIT_OTG_EN 0
87 #define BQ2415X_MASK_VENDER (BIT(5)|BIT(6)|BIT(7))
88 #define BQ2415X_SHIFT_VENDER 5
89 #define BQ2415X_MASK_PN (BIT(3)|BIT(4))
90 #define BQ2415X_SHIFT_PN 3
91 #define BQ2415X_MASK_REVISION (BIT(0)|BIT(1)|BIT(2))
92 #define BQ2415X_SHIFT_REVISION 0
94 /* current register */
95 #define BQ2415X_MASK_RESET BIT(7)
96 #define BQ2415X_MASK_VI_CHRG (BIT(4)|BIT(5)|BIT(6))
97 #define BQ2415X_SHIFT_VI_CHRG 4
99 #define BQ2415X_MASK_VI_TERM (BIT(0)|BIT(1)|BIT(2))
100 #define BQ2415X_SHIFT_VI_TERM 0
103 enum bq2415x_command {
106 BQ2415X_STAT_PIN_STATUS,
107 BQ2415X_STAT_PIN_ENABLE,
108 BQ2415X_STAT_PIN_DISABLE,
109 BQ2415X_CHARGE_STATUS,
110 BQ2415X_BOOST_STATUS,
111 BQ2415X_FAULT_STATUS,
113 BQ2415X_CHARGE_TERMINATION_STATUS,
114 BQ2415X_CHARGE_TERMINATION_ENABLE,
115 BQ2415X_CHARGE_TERMINATION_DISABLE,
116 BQ2415X_CHARGER_STATUS,
117 BQ2415X_CHARGER_ENABLE,
118 BQ2415X_CHARGER_DISABLE,
119 BQ2415X_HIGH_IMPEDANCE_STATUS,
120 BQ2415X_HIGH_IMPEDANCE_ENABLE,
121 BQ2415X_HIGH_IMPEDANCE_DISABLE,
122 BQ2415X_BOOST_MODE_STATUS,
123 BQ2415X_BOOST_MODE_ENABLE,
124 BQ2415X_BOOST_MODE_DISABLE,
127 BQ2415X_OTG_ACTIVATE_HIGH,
128 BQ2415X_OTG_ACTIVATE_LOW,
129 BQ2415X_OTG_PIN_STATUS,
130 BQ2415X_OTG_PIN_ENABLE,
131 BQ2415X_OTG_PIN_DISABLE,
153 static char *bq2415x_chip_name[] = {
168 struct bq2415x_device {
170 struct bq2415x_platform_data init_data;
171 struct power_supply charger;
172 struct delayed_work work;
173 enum bq2415x_mode reported_mode;/* mode reported by hook function */
174 enum bq2415x_mode mode; /* current configured mode */
175 enum bq2415x_chip chip;
176 const char *timer_error;
179 int autotimer; /* 1 - if driver automatically reset timer, 0 - not */
180 int automode; /* 1 - enabled, 0 - disabled; -1 - not supported */
184 /* each registered chip must have unique id */
185 static DEFINE_IDR(bq2415x_id);
187 static DEFINE_MUTEX(bq2415x_id_mutex);
188 static DEFINE_MUTEX(bq2415x_timer_mutex);
189 static DEFINE_MUTEX(bq2415x_i2c_mutex);
191 /**** i2c read functions ****/
193 /* read value from register */
194 static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg)
196 struct i2c_client *client = to_i2c_client(bq->dev);
197 struct i2c_msg msg[2];
201 if (!client->adapter)
204 msg[0].addr = client->addr;
207 msg[0].len = sizeof(reg);
208 msg[1].addr = client->addr;
209 msg[1].flags = I2C_M_RD;
211 msg[1].len = sizeof(val);
213 mutex_lock(&bq2415x_i2c_mutex);
214 ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
215 mutex_unlock(&bq2415x_i2c_mutex);
223 /* read value from register, apply mask and right shift it */
224 static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg,
232 ret = bq2415x_i2c_read(bq, reg);
236 return (ret & mask) >> shift;
239 /* read value from register and return one specified bit */
240 static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit)
245 return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit);
248 /**** i2c write functions ****/
250 /* write value to register */
251 static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val)
253 struct i2c_client *client = to_i2c_client(bq->dev);
254 struct i2c_msg msg[1];
261 msg[0].addr = client->addr;
264 msg[0].len = ARRAY_SIZE(data);
266 mutex_lock(&bq2415x_i2c_mutex);
267 ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
268 mutex_unlock(&bq2415x_i2c_mutex);
270 /* i2c_transfer returns number of messages transferred */
279 /* read value from register, change it with mask left shifted and write back */
280 static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val,
288 ret = bq2415x_i2c_read(bq, reg);
295 return bq2415x_i2c_write(bq, reg, ret);
298 /* change only one bit in register */
299 static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg,
305 return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit);
308 /**** global functions ****/
310 /* exec command function */
311 static int bq2415x_exec_command(struct bq2415x_device *bq,
312 enum bq2415x_command command)
316 case BQ2415X_TIMER_RESET:
317 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS,
318 1, BQ2415X_BIT_TMR_RST);
319 case BQ2415X_OTG_STATUS:
320 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
322 case BQ2415X_STAT_PIN_STATUS:
323 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
324 BQ2415X_BIT_EN_STAT);
325 case BQ2415X_STAT_PIN_ENABLE:
326 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1,
327 BQ2415X_BIT_EN_STAT);
328 case BQ2415X_STAT_PIN_DISABLE:
329 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 0,
330 BQ2415X_BIT_EN_STAT);
331 case BQ2415X_CHARGE_STATUS:
332 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS,
333 BQ2415X_MASK_STAT, BQ2415X_SHIFT_STAT);
334 case BQ2415X_BOOST_STATUS:
335 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS,
337 case BQ2415X_FAULT_STATUS:
338 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS,
339 BQ2415X_MASK_FAULT, BQ2415X_SHIFT_FAULT);
341 case BQ2415X_CHARGE_TERMINATION_STATUS:
342 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
344 case BQ2415X_CHARGE_TERMINATION_ENABLE:
345 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
347 case BQ2415X_CHARGE_TERMINATION_DISABLE:
348 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
350 case BQ2415X_CHARGER_STATUS:
351 ret = bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
356 return ret > 0 ? 0 : 1;
357 case BQ2415X_CHARGER_ENABLE:
358 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
360 case BQ2415X_CHARGER_DISABLE:
361 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
363 case BQ2415X_HIGH_IMPEDANCE_STATUS:
364 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
365 BQ2415X_BIT_HZ_MODE);
366 case BQ2415X_HIGH_IMPEDANCE_ENABLE:
367 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
368 1, BQ2415X_BIT_HZ_MODE);
369 case BQ2415X_HIGH_IMPEDANCE_DISABLE:
370 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
371 0, BQ2415X_BIT_HZ_MODE);
372 case BQ2415X_BOOST_MODE_STATUS:
373 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL,
374 BQ2415X_BIT_OPA_MODE);
375 case BQ2415X_BOOST_MODE_ENABLE:
376 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
377 1, BQ2415X_BIT_OPA_MODE);
378 case BQ2415X_BOOST_MODE_DISABLE:
379 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL,
380 0, BQ2415X_BIT_OPA_MODE);
382 case BQ2415X_OTG_LEVEL:
383 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE,
385 case BQ2415X_OTG_ACTIVATE_HIGH:
386 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
387 1, BQ2415X_BIT_OTG_PL);
388 case BQ2415X_OTG_ACTIVATE_LOW:
389 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
390 0, BQ2415X_BIT_OTG_PL);
391 case BQ2415X_OTG_PIN_STATUS:
392 return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE,
394 case BQ2415X_OTG_PIN_ENABLE:
395 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
396 1, BQ2415X_BIT_OTG_EN);
397 case BQ2415X_OTG_PIN_DISABLE:
398 return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE,
399 0, BQ2415X_BIT_OTG_EN);
401 case BQ2415X_VENDER_CODE:
402 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
403 BQ2415X_MASK_VENDER, BQ2415X_SHIFT_VENDER);
404 case BQ2415X_PART_NUMBER:
405 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
406 BQ2415X_MASK_PN, BQ2415X_SHIFT_PN);
407 case BQ2415X_REVISION:
408 return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
409 BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION);
416 /* detect chip type */
417 static enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq)
419 struct i2c_client *client = to_i2c_client(bq->dev);
420 int ret = bq2415x_exec_command(bq, BQ2415X_PART_NUMBER);
425 switch (client->addr) {
429 if (bq->chip == BQ24151A)
434 if (bq->chip == BQ24150A ||
435 bq->chip == BQ24152 ||
441 if (bq->chip == BQ24153A)
453 if (bq->chip == BQ24156A)
468 /* detect chip revision */
469 static int bq2415x_detect_revision(struct bq2415x_device *bq)
471 int ret = bq2415x_exec_command(bq, BQ2415X_REVISION);
472 int chip = bq2415x_detect_chip(bq);
473 if (ret < 0 || chip < 0)
482 if (ret >= 0 && ret <= 3)
512 /* return chip vender code */
513 static int bq2415x_get_vender_code(struct bq2415x_device *bq)
515 int ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE);
518 else /* convert to binary */
520 ((ret >> 1) & 0x1) * 10 +
521 ((ret >> 2) & 0x1) * 100;
524 /* reset all chip registers to default state */
525 static void bq2415x_reset_chip(struct bq2415x_device *bq)
527 bq2415x_i2c_write(bq, BQ2415X_REG_CURRENT, BQ2415X_RESET_CURRENT);
528 bq2415x_i2c_write(bq, BQ2415X_REG_VOLTAGE, BQ2415X_RESET_VOLTAGE);
529 bq2415x_i2c_write(bq, BQ2415X_REG_CONTROL, BQ2415X_RESET_CONTROL);
530 bq2415x_i2c_write(bq, BQ2415X_REG_STATUS, BQ2415X_RESET_STATUS);
531 bq->timer_error = NULL;
534 /**** properties functions ****/
536 /* set current limit in mA */
537 static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
548 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
549 BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
552 /* get current limit in mA */
553 static int bq2415x_get_current_limit(struct bq2415x_device *bq)
555 int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
556 BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
571 /* set weak battery voltage in mV */
572 static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
578 else if (mV <= 3500 + 50)
580 else if (mV <= 3600 + 50)
584 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
585 BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
588 /* get weak battery voltage in mV */
589 static int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq)
591 int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
592 BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
596 return 100 * (34 + ret);
599 /* set battery regulation voltage in mV */
600 static int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq,
603 int val = (mV/10 - 350) / 2;
607 else if (val > 94) /* FIXME: Max is 94 or 122 ? Set max value ? */
610 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_VOLTAGE, val,
611 BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
614 /* get battery regulation voltage in mV */
615 static int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq)
617 int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE,
618 BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
622 return 10 * (350 + 2*ret);
625 /* set charge current in mA (platform data must provide resistor sense) */
626 static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA)
629 if (bq->init_data.resistor_sense <= 0)
632 val = (mA * bq->init_data.resistor_sense - 37400) / 6800;
639 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val,
640 BQ2415X_MASK_VI_CHRG | BQ2415X_MASK_RESET,
641 BQ2415X_SHIFT_VI_CHRG);
644 /* get charge current in mA (platform data must provide resistor sense) */
645 static int bq2415x_get_charge_current(struct bq2415x_device *bq)
648 if (bq->init_data.resistor_sense <= 0)
651 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
652 BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG);
656 return (37400 + 6800*ret) / bq->init_data.resistor_sense;
659 /* set termination current in mA (platform data must provide resistor sense) */
660 static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA)
663 if (bq->init_data.resistor_sense <= 0)
666 val = (mA * bq->init_data.resistor_sense - 3400) / 3400;
673 return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val,
674 BQ2415X_MASK_VI_TERM | BQ2415X_MASK_RESET,
675 BQ2415X_SHIFT_VI_TERM);
678 /* get termination current in mA (platform data must provide resistor sense) */
679 static int bq2415x_get_termination_current(struct bq2415x_device *bq)
682 if (bq->init_data.resistor_sense <= 0)
685 ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT,
686 BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM);
690 return (3400 + 3400*ret) / bq->init_data.resistor_sense;
693 /* set default value of property */
694 #define bq2415x_set_default_value(bq, prop) \
697 if (bq->init_data.prop != -1) \
698 ret = bq2415x_set_##prop(bq, bq->init_data.prop); \
703 /* set default values of all properties */
704 static int bq2415x_set_defaults(struct bq2415x_device *bq)
706 bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE);
707 bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
708 bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_DISABLE);
709 bq2415x_set_default_value(bq, current_limit);
710 bq2415x_set_default_value(bq, weak_battery_voltage);
711 bq2415x_set_default_value(bq, battery_regulation_voltage);
712 if (bq->init_data.resistor_sense > 0) {
713 bq2415x_set_default_value(bq, charge_current);
714 bq2415x_set_default_value(bq, termination_current);
715 bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_ENABLE);
717 bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE);
721 /**** charger mode functions ****/
723 /* set charger mode */
724 static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode)
730 if (mode == BQ2415X_MODE_HOST_CHARGER ||
731 mode == BQ2415X_MODE_DEDICATED_CHARGER)
734 if (mode == BQ2415X_MODE_BOOST)
738 ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
741 ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE);
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 /* hook function called by other driver which set reported mode */
787 static void bq2415x_hook_function(enum bq2415x_mode mode, void *data)
789 struct bq2415x_device *bq = data;
794 dev_dbg(bq->dev, "hook function was called\n");
795 bq->reported_mode = mode;
797 /* if automode is not enabled do not tell about reported_mode */
798 if (bq->automode < 1)
801 sysfs_notify(&bq->charger.dev->kobj, NULL, "reported_mode");
802 bq2415x_set_mode(bq, bq->reported_mode);
806 /**** timer functions ****/
808 /* enable/disable auto resetting chip timer */
809 static void bq2415x_set_autotimer(struct bq2415x_device *bq, int state)
811 mutex_lock(&bq2415x_timer_mutex);
813 if (bq->autotimer == state) {
814 mutex_unlock(&bq2415x_timer_mutex);
818 bq->autotimer = state;
821 schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ);
822 bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
823 bq->timer_error = NULL;
825 cancel_delayed_work_sync(&bq->work);
828 mutex_unlock(&bq2415x_timer_mutex);
831 /* called by bq2415x_timer_work on timer error */
832 static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg)
834 bq->timer_error = msg;
835 sysfs_notify(&bq->charger.dev->kobj, NULL, "timer");
836 dev_err(bq->dev, "%s\n", msg);
837 if (bq->automode > 0)
839 bq2415x_set_mode(bq, BQ2415X_MODE_NONE);
840 bq2415x_set_autotimer(bq, 0);
843 /* delayed work function for auto resetting chip timer */
844 static void bq2415x_timer_work(struct work_struct *work)
846 struct bq2415x_device *bq = container_of(work, struct bq2415x_device,
848 int ret, error, boost;
853 ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
855 bq2415x_timer_error(bq, "Resetting timer failed");
859 boost = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_STATUS);
861 bq2415x_timer_error(bq, "Unknown error");
865 error = bq2415x_exec_command(bq, BQ2415X_FAULT_STATUS);
867 bq2415x_timer_error(bq, "Unknown error");
873 /* Non fatal errors, chip is OK */
874 case 0: /* No error */
876 case 6: /* Timer expired */
877 dev_err(bq->dev, "Timer expired\n");
879 case 3: /* Battery voltage too low */
880 dev_err(bq->dev, "Battery voltage to low\n");
883 /* Fatal errors, disable and reset chip */
884 case 1: /* Overvoltage protection (chip fried) */
885 bq2415x_timer_error(bq,
886 "Overvoltage protection (chip fried)");
888 case 2: /* Overload */
889 bq2415x_timer_error(bq, "Overload");
891 case 4: /* Battery overvoltage protection */
892 bq2415x_timer_error(bq,
893 "Battery overvoltage protection");
895 case 5: /* Thermal shutdown (too hot) */
896 bq2415x_timer_error(bq,
897 "Thermal shutdown (too hot)");
900 bq2415x_timer_error(bq, "Unknown error");
905 /* Non fatal errors, chip is OK */
906 case 0: /* No error */
908 case 2: /* Sleep mode */
909 dev_err(bq->dev, "Sleep mode\n");
911 case 3: /* Poor input source */
912 dev_err(bq->dev, "Poor input source\n");
914 case 6: /* Timer expired */
915 dev_err(bq->dev, "Timer expired\n");
917 case 7: /* No battery */
918 dev_err(bq->dev, "No battery\n");
921 /* Fatal errors, disable and reset chip */
922 case 1: /* Overvoltage protection (chip fried) */
923 bq2415x_timer_error(bq,
924 "Overvoltage protection (chip fried)");
926 case 4: /* Battery overvoltage protection */
927 bq2415x_timer_error(bq,
928 "Battery overvoltage protection");
930 case 5: /* Thermal shutdown (too hot) */
931 bq2415x_timer_error(bq,
932 "Thermal shutdown (too hot)");
937 schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ);
940 /**** power supply interface code ****/
942 static enum power_supply_property bq2415x_power_supply_props[] = {
943 /* TODO: maybe add more power supply properties */
944 POWER_SUPPLY_PROP_STATUS,
945 POWER_SUPPLY_PROP_MODEL_NAME,
948 static int bq2415x_power_supply_get_property(struct power_supply *psy,
949 enum power_supply_property psp, union power_supply_propval *val)
951 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
956 case POWER_SUPPLY_PROP_STATUS:
957 ret = bq2415x_exec_command(bq, BQ2415X_CHARGE_STATUS);
960 else if (ret == 0) /* Ready */
961 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
962 else if (ret == 1) /* Charge in progress */
963 val->intval = POWER_SUPPLY_STATUS_CHARGING;
964 else if (ret == 2) /* Charge done */
965 val->intval = POWER_SUPPLY_STATUS_FULL;
967 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
969 case POWER_SUPPLY_PROP_MODEL_NAME:
970 val->strval = bq->model;
978 static int bq2415x_power_supply_init(struct bq2415x_device *bq)
984 bq->charger.name = bq->name;
985 bq->charger.type = POWER_SUPPLY_TYPE_USB;
986 bq->charger.properties = bq2415x_power_supply_props;
987 bq->charger.num_properties = ARRAY_SIZE(bq2415x_power_supply_props);
988 bq->charger.get_property = bq2415x_power_supply_get_property;
990 ret = bq2415x_detect_chip(bq);
996 ret = bq2415x_detect_revision(bq);
998 strcpy(revstr, "unknown");
1000 sprintf(revstr, "1.%d", ret);
1002 bq->model = kasprintf(GFP_KERNEL,
1003 "chip %s, revision %s, vender code %.3d",
1004 bq2415x_chip_name[chip], revstr,
1005 bq2415x_get_vender_code(bq));
1007 dev_err(bq->dev, "failed to allocate model name\n");
1011 ret = power_supply_register(bq->dev, &bq->charger);
1020 static void bq2415x_power_supply_exit(struct bq2415x_device *bq)
1023 if (bq->automode > 0)
1025 cancel_delayed_work_sync(&bq->work);
1026 power_supply_unregister(&bq->charger);
1030 /**** additional sysfs entries for power supply interface ****/
1032 /* show *_status entries */
1033 static ssize_t bq2415x_sysfs_show_status(struct device *dev,
1034 struct device_attribute *attr, char *buf)
1036 struct power_supply *psy = dev_get_drvdata(dev);
1037 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1039 enum bq2415x_command command;
1042 if (strcmp(attr->attr.name, "otg_status") == 0)
1043 command = BQ2415X_OTG_STATUS;
1044 else if (strcmp(attr->attr.name, "charge_status") == 0)
1045 command = BQ2415X_CHARGE_STATUS;
1046 else if (strcmp(attr->attr.name, "boost_status") == 0)
1047 command = BQ2415X_BOOST_STATUS;
1048 else if (strcmp(attr->attr.name, "fault_status") == 0)
1049 command = BQ2415X_FAULT_STATUS;
1053 ret = bq2415x_exec_command(bq, command);
1057 return sprintf(buf, "%d\n", ret);
1061 auto - enable auto mode
1062 off - disable auto mode
1063 (other values) - reset chip timer
1065 static ssize_t bq2415x_sysfs_set_timer(struct device *dev,
1066 struct device_attribute *attr, const char *buf, size_t count)
1068 struct power_supply *psy = dev_get_drvdata(dev);
1069 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1073 if (strncmp(buf, "auto", 4) == 0)
1074 bq2415x_set_autotimer(bq, 1);
1075 else if (strncmp(buf, "off", 3) == 0)
1076 bq2415x_set_autotimer(bq, 0);
1078 ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET);
1086 /* show timer entry (auto or off) */
1087 static ssize_t bq2415x_sysfs_show_timer(struct device *dev,
1088 struct device_attribute *attr, char *buf)
1090 struct power_supply *psy = dev_get_drvdata(dev);
1091 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1094 if (bq->timer_error)
1095 return sprintf(buf, "%s\n", bq->timer_error);
1098 return sprintf(buf, "auto\n");
1100 return sprintf(buf, "off\n");
1104 auto - if automode is supported, enable it and set mode to reported
1105 none - disable charger and boost mode
1106 host - charging mode for host/hub chargers (current limit 500mA)
1107 dedicated - charging mode for dedicated chargers (unlimited current limit)
1108 boost - disable charger and enable boost mode
1110 static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
1111 struct device_attribute *attr, const char *buf, size_t count)
1113 struct power_supply *psy = dev_get_drvdata(dev);
1114 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1116 enum bq2415x_mode mode;
1119 if (strncmp(buf, "auto", 4) == 0) {
1120 if (bq->automode < 0)
1123 mode = bq->reported_mode;
1124 } else if (strncmp(buf, "none", 4) == 0) {
1125 if (bq->automode > 0)
1127 mode = BQ2415X_MODE_NONE;
1128 } else if (strncmp(buf, "host", 4) == 0) {
1129 if (bq->automode > 0)
1131 mode = BQ2415X_MODE_HOST_CHARGER;
1132 } else if (strncmp(buf, "dedicated", 9) == 0) {
1133 if (bq->automode > 0)
1135 mode = BQ2415X_MODE_DEDICATED_CHARGER;
1136 } else if (strncmp(buf, "boost", 5) == 0) {
1137 if (bq->automode > 0)
1139 mode = BQ2415X_MODE_BOOST;
1140 } else if (strncmp(buf, "reset", 5) == 0) {
1141 bq2415x_reset_chip(bq);
1142 bq2415x_set_defaults(bq);
1143 if (bq->automode <= 0)
1146 mode = bq->reported_mode;
1150 ret = bq2415x_set_mode(bq, mode);
1157 /* show mode entry (auto, none, host, dedicated or boost) */
1158 static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
1159 struct device_attribute *attr, char *buf)
1161 struct power_supply *psy = dev_get_drvdata(dev);
1162 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1166 if (bq->automode > 0)
1167 ret += sprintf(buf+ret, "auto (");
1170 case BQ2415X_MODE_NONE:
1171 ret += sprintf(buf+ret, "none");
1173 case BQ2415X_MODE_HOST_CHARGER:
1174 ret += sprintf(buf+ret, "host");
1176 case BQ2415X_MODE_DEDICATED_CHARGER:
1177 ret += sprintf(buf+ret, "dedicated");
1179 case BQ2415X_MODE_BOOST:
1180 ret += sprintf(buf+ret, "boost");
1184 if (bq->automode > 0)
1185 ret += sprintf(buf+ret, ")");
1187 ret += sprintf(buf+ret, "\n");
1191 /* show reported_mode entry (none, host, dedicated or boost) */
1192 static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
1193 struct device_attribute *attr, char *buf)
1195 struct power_supply *psy = dev_get_drvdata(dev);
1196 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1199 if (bq->automode < 0)
1202 switch (bq->reported_mode) {
1203 case BQ2415X_MODE_NONE:
1204 return sprintf(buf, "none\n");
1205 case BQ2415X_MODE_HOST_CHARGER:
1206 return sprintf(buf, "host\n");
1207 case BQ2415X_MODE_DEDICATED_CHARGER:
1208 return sprintf(buf, "dedicated\n");
1209 case BQ2415X_MODE_BOOST:
1210 return sprintf(buf, "boost\n");
1216 /* directly set raw value to chip register, format: 'register value' */
1217 static ssize_t bq2415x_sysfs_set_registers(struct device *dev,
1218 struct device_attribute *attr, const char *buf, size_t count)
1220 struct power_supply *psy = dev_get_drvdata(dev);
1221 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1227 if (sscanf(buf, "%x %x", ®, &val) != 2)
1230 if (reg > 4 || val > 255)
1233 ret = bq2415x_i2c_write(bq, reg, val);
1240 /* print value of chip register, format: 'register=value' */
1241 static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq,
1244 int ret = bq2415x_i2c_read(bq, reg);
1246 return sprintf(buf, "%#.2x=error %d\n", reg, ret);
1248 return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
1251 /* show all raw values of chip register, format per line: 'register=value' */
1252 static ssize_t bq2415x_sysfs_show_registers(struct device *dev,
1253 struct device_attribute *attr, char *buf)
1255 struct power_supply *psy = dev_get_drvdata(dev);
1256 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1260 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_STATUS, buf+ret);
1261 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CONTROL, buf+ret);
1262 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VOLTAGE, buf+ret);
1263 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VENDER, buf+ret);
1264 ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CURRENT, buf+ret);
1268 /* set current and voltage limit entries (in mA or mV) */
1269 static ssize_t bq2415x_sysfs_set_limit(struct device *dev,
1270 struct device_attribute *attr, const char *buf, size_t count)
1272 struct power_supply *psy = dev_get_drvdata(dev);
1273 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1278 if (kstrtol(buf, 10, &val) < 0)
1281 if (strcmp(attr->attr.name, "current_limit") == 0)
1282 ret = bq2415x_set_current_limit(bq, val);
1283 else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0)
1284 ret = bq2415x_set_weak_battery_voltage(bq, val);
1285 else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0)
1286 ret = bq2415x_set_battery_regulation_voltage(bq, val);
1287 else if (strcmp(attr->attr.name, "charge_current") == 0)
1288 ret = bq2415x_set_charge_current(bq, val);
1289 else if (strcmp(attr->attr.name, "termination_current") == 0)
1290 ret = bq2415x_set_termination_current(bq, val);
1300 /* show current and voltage limit entries (in mA or mV) */
1301 static ssize_t bq2415x_sysfs_show_limit(struct device *dev,
1302 struct device_attribute *attr, char *buf)
1304 struct power_supply *psy = dev_get_drvdata(dev);
1305 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1309 if (strcmp(attr->attr.name, "current_limit") == 0)
1310 ret = bq2415x_get_current_limit(bq);
1311 else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0)
1312 ret = bq2415x_get_weak_battery_voltage(bq);
1313 else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0)
1314 ret = bq2415x_get_battery_regulation_voltage(bq);
1315 else if (strcmp(attr->attr.name, "charge_current") == 0)
1316 ret = bq2415x_get_charge_current(bq);
1317 else if (strcmp(attr->attr.name, "termination_current") == 0)
1318 ret = bq2415x_get_termination_current(bq);
1325 return sprintf(buf, "%d\n", ret);
1328 /* set *_enable entries */
1329 static ssize_t bq2415x_sysfs_set_enable(struct device *dev,
1330 struct device_attribute *attr, const char *buf, size_t count)
1332 struct power_supply *psy = dev_get_drvdata(dev);
1333 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1335 enum bq2415x_command command;
1339 if (kstrtol(buf, 10, &val) < 0)
1342 if (strcmp(attr->attr.name, "charge_termination_enable") == 0)
1343 command = val ? BQ2415X_CHARGE_TERMINATION_ENABLE :
1344 BQ2415X_CHARGE_TERMINATION_DISABLE;
1345 else if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
1346 command = val ? BQ2415X_HIGH_IMPEDANCE_ENABLE :
1347 BQ2415X_HIGH_IMPEDANCE_DISABLE;
1348 else if (strcmp(attr->attr.name, "otg_pin_enable") == 0)
1349 command = val ? BQ2415X_OTG_PIN_ENABLE :
1350 BQ2415X_OTG_PIN_DISABLE;
1351 else if (strcmp(attr->attr.name, "stat_pin_enable") == 0)
1352 command = val ? BQ2415X_STAT_PIN_ENABLE :
1353 BQ2415X_STAT_PIN_DISABLE;
1357 ret = bq2415x_exec_command(bq, command);
1364 /* show *_enable entries */
1365 static ssize_t bq2415x_sysfs_show_enable(struct device *dev,
1366 struct device_attribute *attr, char *buf)
1368 struct power_supply *psy = dev_get_drvdata(dev);
1369 struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
1371 enum bq2415x_command command;
1374 if (strcmp(attr->attr.name, "charge_termination_enable") == 0)
1375 command = BQ2415X_CHARGE_TERMINATION_STATUS;
1376 else if (strcmp(attr->attr.name, "high_impedance_enable") == 0)
1377 command = BQ2415X_HIGH_IMPEDANCE_STATUS;
1378 else if (strcmp(attr->attr.name, "otg_pin_enable") == 0)
1379 command = BQ2415X_OTG_PIN_STATUS;
1380 else if (strcmp(attr->attr.name, "stat_pin_enable") == 0)
1381 command = BQ2415X_STAT_PIN_STATUS;
1385 ret = bq2415x_exec_command(bq, command);
1389 return sprintf(buf, "%d\n", ret);
1392 static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO,
1393 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1394 static DEVICE_ATTR(weak_battery_voltage, S_IWUSR | S_IRUGO,
1395 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1396 static DEVICE_ATTR(battery_regulation_voltage, S_IWUSR | S_IRUGO,
1397 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1398 static DEVICE_ATTR(charge_current, S_IWUSR | S_IRUGO,
1399 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1400 static DEVICE_ATTR(termination_current, S_IWUSR | S_IRUGO,
1401 bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit);
1403 static DEVICE_ATTR(charge_termination_enable, S_IWUSR | S_IRUGO,
1404 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1405 static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO,
1406 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1407 static DEVICE_ATTR(otg_pin_enable, S_IWUSR | S_IRUGO,
1408 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1409 static DEVICE_ATTR(stat_pin_enable, S_IWUSR | S_IRUGO,
1410 bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable);
1412 static DEVICE_ATTR(reported_mode, S_IRUGO,
1413 bq2415x_sysfs_show_reported_mode, NULL);
1414 static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO,
1415 bq2415x_sysfs_show_mode, bq2415x_sysfs_set_mode);
1416 static DEVICE_ATTR(timer, S_IWUSR | S_IRUGO,
1417 bq2415x_sysfs_show_timer, bq2415x_sysfs_set_timer);
1419 static DEVICE_ATTR(registers, S_IWUSR | S_IRUGO,
1420 bq2415x_sysfs_show_registers, bq2415x_sysfs_set_registers);
1422 static DEVICE_ATTR(otg_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1423 static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1424 static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1425 static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
1427 static struct attribute *bq2415x_sysfs_attributes[] = {
1428 &dev_attr_current_limit.attr,
1429 &dev_attr_weak_battery_voltage.attr,
1430 &dev_attr_battery_regulation_voltage.attr,
1431 &dev_attr_charge_current.attr,
1432 &dev_attr_termination_current.attr,
1434 &dev_attr_charge_termination_enable.attr,
1435 &dev_attr_high_impedance_enable.attr,
1436 &dev_attr_otg_pin_enable.attr,
1437 &dev_attr_stat_pin_enable.attr,
1439 &dev_attr_reported_mode.attr,
1440 &dev_attr_mode.attr,
1441 &dev_attr_timer.attr,
1443 &dev_attr_registers.attr,
1445 &dev_attr_otg_status.attr,
1446 &dev_attr_charge_status.attr,
1447 &dev_attr_boost_status.attr,
1448 &dev_attr_fault_status.attr,
1452 static const struct attribute_group bq2415x_sysfs_attr_group = {
1453 .attrs = bq2415x_sysfs_attributes,
1456 static int bq2415x_sysfs_init(struct bq2415x_device *bq)
1458 return sysfs_create_group(&bq->charger.dev->kobj,
1459 &bq2415x_sysfs_attr_group);
1462 static void bq2415x_sysfs_exit(struct bq2415x_device *bq)
1464 sysfs_remove_group(&bq->charger.dev->kobj, &bq2415x_sysfs_attr_group);
1467 /* main bq2415x probe function */
1468 static int bq2415x_probe(struct i2c_client *client,
1469 const struct i2c_device_id *id)
1474 struct bq2415x_device *bq;
1476 if (!client->dev.platform_data) {
1477 dev_err(&client->dev, "platform data not set\n");
1481 /* Get new ID for the new device */
1482 ret = idr_pre_get(&bq2415x_id, GFP_KERNEL);
1486 mutex_lock(&bq2415x_id_mutex);
1487 ret = idr_get_new(&bq2415x_id, client, &num);
1488 mutex_unlock(&bq2415x_id_mutex);
1493 name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num);
1495 dev_err(&client->dev, "failed to allocate device name\n");
1500 bq = kzalloc(sizeof(*bq), GFP_KERNEL);
1502 dev_err(&client->dev, "failed to allocate device data\n");
1507 i2c_set_clientdata(client, bq);
1510 bq->dev = &client->dev;
1511 bq->chip = id->driver_data;
1513 bq->mode = BQ2415X_MODE_NONE;
1514 bq->reported_mode = BQ2415X_MODE_NONE;
1518 memcpy(&bq->init_data, client->dev.platform_data,
1519 sizeof(bq->init_data));
1521 bq2415x_reset_chip(bq);
1523 ret = bq2415x_power_supply_init(bq);
1525 dev_err(bq->dev, "failed to register power supply: %d\n", ret);
1529 ret = bq2415x_sysfs_init(bq);
1531 dev_err(bq->dev, "failed to create sysfs entries: %d\n", ret);
1535 ret = bq2415x_set_defaults(bq);
1537 dev_err(bq->dev, "failed to set default values: %d\n", ret);
1541 if (bq->init_data.set_mode_hook) {
1542 if (bq->init_data.set_mode_hook(
1543 bq2415x_hook_function, bq)) {
1545 bq2415x_set_mode(bq, bq->reported_mode);
1546 dev_info(bq->dev, "automode enabled\n");
1549 dev_info(bq->dev, "automode failed\n");
1553 dev_info(bq->dev, "automode not supported\n");
1556 INIT_DELAYED_WORK(&bq->work, bq2415x_timer_work);
1557 bq2415x_set_autotimer(bq, 1);
1559 dev_info(bq->dev, "driver registered\n");
1563 bq2415x_sysfs_exit(bq);
1565 bq2415x_power_supply_exit(bq);
1571 mutex_lock(&bq2415x_id_mutex);
1572 idr_remove(&bq2415x_id, num);
1573 mutex_unlock(&bq2415x_id_mutex);
1578 /* main bq2415x remove function */
1580 static int bq2415x_remove(struct i2c_client *client)
1582 struct bq2415x_device *bq = i2c_get_clientdata(client);
1584 if (bq->init_data.set_mode_hook)
1585 bq->init_data.set_mode_hook(NULL, NULL);
1587 bq2415x_sysfs_exit(bq);
1588 bq2415x_power_supply_exit(bq);
1590 bq2415x_reset_chip(bq);
1592 mutex_lock(&bq2415x_id_mutex);
1593 idr_remove(&bq2415x_id, bq->id);
1594 mutex_unlock(&bq2415x_id_mutex);
1596 dev_info(bq->dev, "driver unregistered\n");
1604 static const struct i2c_device_id bq2415x_i2c_id_table[] = {
1605 { "bq2415x", BQUNKNOWN },
1606 { "bq24150", BQ24150 },
1607 { "bq24150a", BQ24150A },
1608 { "bq24151", BQ24151 },
1609 { "bq24151a", BQ24151A },
1610 { "bq24152", BQ24152 },
1611 { "bq24153", BQ24153 },
1612 { "bq24153a", BQ24153A },
1613 { "bq24155", BQ24155 },
1614 { "bq24156", BQ24156 },
1615 { "bq24156a", BQ24156A },
1616 { "bq24158", BQ24158 },
1619 MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table);
1621 static struct i2c_driver bq2415x_driver = {
1623 .name = "bq2415x-charger",
1625 .probe = bq2415x_probe,
1626 .remove = bq2415x_remove,
1627 .id_table = bq2415x_i2c_id_table,
1630 static int __init bq2415x_init(void)
1632 return i2c_add_driver(&bq2415x_driver);
1634 module_init(bq2415x_init);
1636 static void __exit bq2415x_exit(void)
1638 i2c_del_driver(&bq2415x_driver);
1640 module_exit(bq2415x_exit);
1642 MODULE_AUTHOR("Pali Rohár <pali.rohar@gmail.com>");
1643 MODULE_DESCRIPTION("bq2415x charger driver");
1644 MODULE_LICENSE("GPL");