2 * Driver for the TI bq24190 battery charger.
4 * Author: Mark A. Greer <mgreer@animalcreek.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
11 #include <linux/module.h>
12 #include <linux/interrupt.h>
13 #include <linux/delay.h>
14 #include <linux/of_irq.h>
15 #include <linux/of_device.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/power_supply.h>
18 #include <linux/gpio.h>
19 #include <linux/i2c.h>
21 #include <linux/power/bq24190_charger.h>
24 #define BQ24190_MANUFACTURER "Texas Instruments"
26 #define BQ24190_REG_ISC 0x00 /* Input Source Control */
27 #define BQ24190_REG_ISC_EN_HIZ_MASK BIT(7)
28 #define BQ24190_REG_ISC_EN_HIZ_SHIFT 7
29 #define BQ24190_REG_ISC_VINDPM_MASK (BIT(6) | BIT(5) | BIT(4) | \
31 #define BQ24190_REG_ISC_VINDPM_SHIFT 3
32 #define BQ24190_REG_ISC_IINLIM_MASK (BIT(2) | BIT(1) | BIT(0))
33 #define BQ24190_REG_ISC_IINLIM_SHIFT 0
35 #define BQ24190_REG_POC 0x01 /* Power-On Configuration */
36 #define BQ24190_REG_POC_RESET_MASK BIT(7)
37 #define BQ24190_REG_POC_RESET_SHIFT 7
38 #define BQ24190_REG_POC_WDT_RESET_MASK BIT(6)
39 #define BQ24190_REG_POC_WDT_RESET_SHIFT 6
40 #define BQ24190_REG_POC_CHG_CONFIG_MASK (BIT(5) | BIT(4))
41 #define BQ24190_REG_POC_CHG_CONFIG_SHIFT 4
42 #define BQ24190_REG_POC_SYS_MIN_MASK (BIT(3) | BIT(2) | BIT(1))
43 #define BQ24190_REG_POC_SYS_MIN_SHIFT 1
44 #define BQ24190_REG_POC_BOOST_LIM_MASK BIT(0)
45 #define BQ24190_REG_POC_BOOST_LIM_SHIFT 0
47 #define BQ24190_REG_CCC 0x02 /* Charge Current Control */
48 #define BQ24190_REG_CCC_ICHG_MASK (BIT(7) | BIT(6) | BIT(5) | \
49 BIT(4) | BIT(3) | BIT(2))
50 #define BQ24190_REG_CCC_ICHG_SHIFT 2
51 #define BQ24190_REG_CCC_FORCE_20PCT_MASK BIT(0)
52 #define BQ24190_REG_CCC_FORCE_20PCT_SHIFT 0
54 #define BQ24190_REG_PCTCC 0x03 /* Pre-charge/Termination Current Cntl */
55 #define BQ24190_REG_PCTCC_IPRECHG_MASK (BIT(7) | BIT(6) | BIT(5) | \
57 #define BQ24190_REG_PCTCC_IPRECHG_SHIFT 4
58 #define BQ24190_REG_PCTCC_ITERM_MASK (BIT(3) | BIT(2) | BIT(1) | \
60 #define BQ24190_REG_PCTCC_ITERM_SHIFT 0
62 #define BQ24190_REG_CVC 0x04 /* Charge Voltage Control */
63 #define BQ24190_REG_CVC_VREG_MASK (BIT(7) | BIT(6) | BIT(5) | \
64 BIT(4) | BIT(3) | BIT(2))
65 #define BQ24190_REG_CVC_VREG_SHIFT 2
66 #define BQ24190_REG_CVC_BATLOWV_MASK BIT(1)
67 #define BQ24190_REG_CVC_BATLOWV_SHIFT 1
68 #define BQ24190_REG_CVC_VRECHG_MASK BIT(0)
69 #define BQ24190_REG_CVC_VRECHG_SHIFT 0
71 #define BQ24190_REG_CTTC 0x05 /* Charge Term/Timer Control */
72 #define BQ24190_REG_CTTC_EN_TERM_MASK BIT(7)
73 #define BQ24190_REG_CTTC_EN_TERM_SHIFT 7
74 #define BQ24190_REG_CTTC_TERM_STAT_MASK BIT(6)
75 #define BQ24190_REG_CTTC_TERM_STAT_SHIFT 6
76 #define BQ24190_REG_CTTC_WATCHDOG_MASK (BIT(5) | BIT(4))
77 #define BQ24190_REG_CTTC_WATCHDOG_SHIFT 4
78 #define BQ24190_REG_CTTC_EN_TIMER_MASK BIT(3)
79 #define BQ24190_REG_CTTC_EN_TIMER_SHIFT 3
80 #define BQ24190_REG_CTTC_CHG_TIMER_MASK (BIT(2) | BIT(1))
81 #define BQ24190_REG_CTTC_CHG_TIMER_SHIFT 1
82 #define BQ24190_REG_CTTC_JEITA_ISET_MASK BIT(0)
83 #define BQ24190_REG_CTTC_JEITA_ISET_SHIFT 0
85 #define BQ24190_REG_ICTRC 0x06 /* IR Comp/Thermal Regulation Control */
86 #define BQ24190_REG_ICTRC_BAT_COMP_MASK (BIT(7) | BIT(6) | BIT(5))
87 #define BQ24190_REG_ICTRC_BAT_COMP_SHIFT 5
88 #define BQ24190_REG_ICTRC_VCLAMP_MASK (BIT(4) | BIT(3) | BIT(2))
89 #define BQ24190_REG_ICTRC_VCLAMP_SHIFT 2
90 #define BQ24190_REG_ICTRC_TREG_MASK (BIT(1) | BIT(0))
91 #define BQ24190_REG_ICTRC_TREG_SHIFT 0
93 #define BQ24190_REG_MOC 0x07 /* Misc. Operation Control */
94 #define BQ24190_REG_MOC_DPDM_EN_MASK BIT(7)
95 #define BQ24190_REG_MOC_DPDM_EN_SHIFT 7
96 #define BQ24190_REG_MOC_TMR2X_EN_MASK BIT(6)
97 #define BQ24190_REG_MOC_TMR2X_EN_SHIFT 6
98 #define BQ24190_REG_MOC_BATFET_DISABLE_MASK BIT(5)
99 #define BQ24190_REG_MOC_BATFET_DISABLE_SHIFT 5
100 #define BQ24190_REG_MOC_JEITA_VSET_MASK BIT(4)
101 #define BQ24190_REG_MOC_JEITA_VSET_SHIFT 4
102 #define BQ24190_REG_MOC_INT_MASK_MASK (BIT(1) | BIT(0))
103 #define BQ24190_REG_MOC_INT_MASK_SHIFT 0
105 #define BQ24190_REG_SS 0x08 /* System Status */
106 #define BQ24190_REG_SS_VBUS_STAT_MASK (BIT(7) | BIT(6))
107 #define BQ24190_REG_SS_VBUS_STAT_SHIFT 6
108 #define BQ24190_REG_SS_CHRG_STAT_MASK (BIT(5) | BIT(4))
109 #define BQ24190_REG_SS_CHRG_STAT_SHIFT 4
110 #define BQ24190_REG_SS_DPM_STAT_MASK BIT(3)
111 #define BQ24190_REG_SS_DPM_STAT_SHIFT 3
112 #define BQ24190_REG_SS_PG_STAT_MASK BIT(2)
113 #define BQ24190_REG_SS_PG_STAT_SHIFT 2
114 #define BQ24190_REG_SS_THERM_STAT_MASK BIT(1)
115 #define BQ24190_REG_SS_THERM_STAT_SHIFT 1
116 #define BQ24190_REG_SS_VSYS_STAT_MASK BIT(0)
117 #define BQ24190_REG_SS_VSYS_STAT_SHIFT 0
119 #define BQ24190_REG_F 0x09 /* Fault */
120 #define BQ24190_REG_F_WATCHDOG_FAULT_MASK BIT(7)
121 #define BQ24190_REG_F_WATCHDOG_FAULT_SHIFT 7
122 #define BQ24190_REG_F_BOOST_FAULT_MASK BIT(6)
123 #define BQ24190_REG_F_BOOST_FAULT_SHIFT 6
124 #define BQ24190_REG_F_CHRG_FAULT_MASK (BIT(5) | BIT(4))
125 #define BQ24190_REG_F_CHRG_FAULT_SHIFT 4
126 #define BQ24190_REG_F_BAT_FAULT_MASK BIT(3)
127 #define BQ24190_REG_F_BAT_FAULT_SHIFT 3
128 #define BQ24190_REG_F_NTC_FAULT_MASK (BIT(2) | BIT(1) | BIT(0))
129 #define BQ24190_REG_F_NTC_FAULT_SHIFT 0
131 #define BQ24190_REG_VPRS 0x0A /* Vendor/Part/Revision Status */
132 #define BQ24190_REG_VPRS_PN_MASK (BIT(5) | BIT(4) | BIT(3))
133 #define BQ24190_REG_VPRS_PN_SHIFT 3
134 #define BQ24190_REG_VPRS_PN_24190 0x4
135 #define BQ24190_REG_VPRS_PN_24192 0x5 /* Also 24193 */
136 #define BQ24190_REG_VPRS_PN_24192I 0x3
137 #define BQ24190_REG_VPRS_TS_PROFILE_MASK BIT(2)
138 #define BQ24190_REG_VPRS_TS_PROFILE_SHIFT 2
139 #define BQ24190_REG_VPRS_DEV_REG_MASK (BIT(1) | BIT(0))
140 #define BQ24190_REG_VPRS_DEV_REG_SHIFT 0
143 * The FAULT register is latched by the bq24190 (except for NTC_FAULT)
144 * so the first read after a fault returns the latched value and subsequent
145 * reads return the current value. In order to return the fault status
146 * to the user, have the interrupt handler save the reg's value and retrieve
147 * it in the appropriate health/status routine. Each routine has its own
148 * flag indicating whether it should use the value stored by the last run
149 * of the interrupt handler or do an actual reg read. That way each routine
150 * can report back whatever fault may have occured.
152 struct bq24190_dev_info {
153 struct i2c_client *client;
155 struct power_supply charger;
156 struct power_supply battery;
157 char model_name[I2C_NAME_SIZE];
158 kernel_ulong_t model;
159 unsigned int gpio_int;
161 struct mutex f_reg_lock;
163 bool charger_health_valid;
164 bool battery_health_valid;
165 bool battery_status_valid;
172 * The tables below provide a 2-way mapping for the value that goes in
173 * the register field and the real-world value that it represents.
174 * The index of the array is the value that goes in the register; the
175 * number at that index in the array is the real-world value that it
178 /* REG02[7:2] (ICHG) in uAh */
179 static const int bq24190_ccc_ichg_values[] = {
180 512000, 576000, 640000, 704000, 768000, 832000, 896000, 960000,
181 1024000, 1088000, 1152000, 1216000, 1280000, 1344000, 1408000, 1472000,
182 1536000, 1600000, 1664000, 1728000, 1792000, 1856000, 1920000, 1984000,
183 2048000, 2112000, 2176000, 2240000, 2304000, 2368000, 2432000, 2496000,
184 2560000, 2624000, 2688000, 2752000, 2816000, 2880000, 2944000, 3008000,
185 3072000, 3136000, 3200000, 3264000, 3328000, 3392000, 3456000, 3520000,
186 3584000, 3648000, 3712000, 3776000, 3840000, 3904000, 3968000, 4032000,
187 4096000, 4160000, 4224000, 4288000, 4352000, 4416000, 4480000, 4544000
190 /* REG04[7:2] (VREG) in uV */
191 static const int bq24190_cvc_vreg_values[] = {
192 3504000, 3520000, 3536000, 3552000, 3568000, 3584000, 3600000, 3616000,
193 3632000, 3648000, 3664000, 3680000, 3696000, 3712000, 3728000, 3744000,
194 3760000, 3776000, 3792000, 3808000, 3824000, 3840000, 3856000, 3872000,
195 3888000, 3904000, 3920000, 3936000, 3952000, 3968000, 3984000, 4000000,
196 4016000, 4032000, 4048000, 4064000, 4080000, 4096000, 4112000, 4128000,
197 4144000, 4160000, 4176000, 4192000, 4208000, 4224000, 4240000, 4256000,
198 4272000, 4288000, 4304000, 4320000, 4336000, 4352000, 4368000, 4384000,
202 /* REG06[1:0] (TREG) in tenths of degrees Celcius */
203 static const int bq24190_ictrc_treg_values[] = {
208 * Return the index in 'tbl' of greatest value that is less than or equal to
209 * 'val'. The index range returned is 0 to 'tbl_size' - 1. Assumes that
210 * the values in 'tbl' are sorted from smallest to largest and 'tbl_size'
213 static u8 bq24190_find_idx(const int tbl[], int tbl_size, int v)
217 for (i = 1; i < tbl_size; i++)
224 /* Basic driver I/O routines */
226 static int bq24190_read(struct bq24190_dev_info *bdi, u8 reg, u8 *data)
230 ret = i2c_smbus_read_byte_data(bdi->client, reg);
238 static int bq24190_write(struct bq24190_dev_info *bdi, u8 reg, u8 data)
240 return i2c_smbus_write_byte_data(bdi->client, reg, data);
243 static int bq24190_read_mask(struct bq24190_dev_info *bdi, u8 reg,
244 u8 mask, u8 shift, u8 *data)
249 ret = bq24190_read(bdi, reg, &v);
260 static int bq24190_write_mask(struct bq24190_dev_info *bdi, u8 reg,
261 u8 mask, u8 shift, u8 data)
266 ret = bq24190_read(bdi, reg, &v);
271 v |= ((data << shift) & mask);
273 return bq24190_write(bdi, reg, v);
276 static int bq24190_get_field_val(struct bq24190_dev_info *bdi,
277 u8 reg, u8 mask, u8 shift,
278 const int tbl[], int tbl_size,
284 ret = bq24190_read_mask(bdi, reg, mask, shift, &v);
288 v = (v >= tbl_size) ? (tbl_size - 1) : v;
294 static int bq24190_set_field_val(struct bq24190_dev_info *bdi,
295 u8 reg, u8 mask, u8 shift,
296 const int tbl[], int tbl_size,
301 idx = bq24190_find_idx(tbl, tbl_size, val);
303 return bq24190_write_mask(bdi, reg, mask, shift, idx);
308 * There are a numerous options that are configurable on the bq24190
309 * that go well beyond what the power_supply properties provide access to.
310 * Provide sysfs access to them so they can be examined and possibly modified
311 * on the fly. They will be provided for the charger power_supply object only
312 * and will be prefixed by 'f_' to make them easier to recognize.
315 #define BQ24190_SYSFS_FIELD(_name, r, f, m, store) \
317 .attr = __ATTR(f_##_name, m, bq24190_sysfs_show, store), \
318 .reg = BQ24190_REG_##r, \
319 .mask = BQ24190_REG_##r##_##f##_MASK, \
320 .shift = BQ24190_REG_##r##_##f##_SHIFT, \
323 #define BQ24190_SYSFS_FIELD_RW(_name, r, f) \
324 BQ24190_SYSFS_FIELD(_name, r, f, S_IWUSR | S_IRUGO, \
327 #define BQ24190_SYSFS_FIELD_RO(_name, r, f) \
328 BQ24190_SYSFS_FIELD(_name, r, f, S_IRUGO, NULL)
330 static ssize_t bq24190_sysfs_show(struct device *dev,
331 struct device_attribute *attr, char *buf);
332 static ssize_t bq24190_sysfs_store(struct device *dev,
333 struct device_attribute *attr, const char *buf, size_t count);
335 struct bq24190_sysfs_field_info {
336 struct device_attribute attr;
342 /* On i386 ptrace-abi.h defines SS that breaks the macro calls below. */
345 static struct bq24190_sysfs_field_info bq24190_sysfs_field_tbl[] = {
346 /* sysfs name reg field in reg */
347 BQ24190_SYSFS_FIELD_RW(en_hiz, ISC, EN_HIZ),
348 BQ24190_SYSFS_FIELD_RW(vindpm, ISC, VINDPM),
349 BQ24190_SYSFS_FIELD_RW(iinlim, ISC, IINLIM),
350 BQ24190_SYSFS_FIELD_RW(chg_config, POC, CHG_CONFIG),
351 BQ24190_SYSFS_FIELD_RW(sys_min, POC, SYS_MIN),
352 BQ24190_SYSFS_FIELD_RW(boost_lim, POC, BOOST_LIM),
353 BQ24190_SYSFS_FIELD_RW(ichg, CCC, ICHG),
354 BQ24190_SYSFS_FIELD_RW(force_20_pct, CCC, FORCE_20PCT),
355 BQ24190_SYSFS_FIELD_RW(iprechg, PCTCC, IPRECHG),
356 BQ24190_SYSFS_FIELD_RW(iterm, PCTCC, ITERM),
357 BQ24190_SYSFS_FIELD_RW(vreg, CVC, VREG),
358 BQ24190_SYSFS_FIELD_RW(batlowv, CVC, BATLOWV),
359 BQ24190_SYSFS_FIELD_RW(vrechg, CVC, VRECHG),
360 BQ24190_SYSFS_FIELD_RW(en_term, CTTC, EN_TERM),
361 BQ24190_SYSFS_FIELD_RW(term_stat, CTTC, TERM_STAT),
362 BQ24190_SYSFS_FIELD_RO(watchdog, CTTC, WATCHDOG),
363 BQ24190_SYSFS_FIELD_RW(en_timer, CTTC, EN_TIMER),
364 BQ24190_SYSFS_FIELD_RW(chg_timer, CTTC, CHG_TIMER),
365 BQ24190_SYSFS_FIELD_RW(jeta_iset, CTTC, JEITA_ISET),
366 BQ24190_SYSFS_FIELD_RW(bat_comp, ICTRC, BAT_COMP),
367 BQ24190_SYSFS_FIELD_RW(vclamp, ICTRC, VCLAMP),
368 BQ24190_SYSFS_FIELD_RW(treg, ICTRC, TREG),
369 BQ24190_SYSFS_FIELD_RW(dpdm_en, MOC, DPDM_EN),
370 BQ24190_SYSFS_FIELD_RW(tmr2x_en, MOC, TMR2X_EN),
371 BQ24190_SYSFS_FIELD_RW(batfet_disable, MOC, BATFET_DISABLE),
372 BQ24190_SYSFS_FIELD_RW(jeita_vset, MOC, JEITA_VSET),
373 BQ24190_SYSFS_FIELD_RO(int_mask, MOC, INT_MASK),
374 BQ24190_SYSFS_FIELD_RO(vbus_stat, SS, VBUS_STAT),
375 BQ24190_SYSFS_FIELD_RO(chrg_stat, SS, CHRG_STAT),
376 BQ24190_SYSFS_FIELD_RO(dpm_stat, SS, DPM_STAT),
377 BQ24190_SYSFS_FIELD_RO(pg_stat, SS, PG_STAT),
378 BQ24190_SYSFS_FIELD_RO(therm_stat, SS, THERM_STAT),
379 BQ24190_SYSFS_FIELD_RO(vsys_stat, SS, VSYS_STAT),
380 BQ24190_SYSFS_FIELD_RO(watchdog_fault, F, WATCHDOG_FAULT),
381 BQ24190_SYSFS_FIELD_RO(boost_fault, F, BOOST_FAULT),
382 BQ24190_SYSFS_FIELD_RO(chrg_fault, F, CHRG_FAULT),
383 BQ24190_SYSFS_FIELD_RO(bat_fault, F, BAT_FAULT),
384 BQ24190_SYSFS_FIELD_RO(ntc_fault, F, NTC_FAULT),
385 BQ24190_SYSFS_FIELD_RO(pn, VPRS, PN),
386 BQ24190_SYSFS_FIELD_RO(ts_profile, VPRS, TS_PROFILE),
387 BQ24190_SYSFS_FIELD_RO(dev_reg, VPRS, DEV_REG),
390 static struct attribute *
391 bq24190_sysfs_attrs[ARRAY_SIZE(bq24190_sysfs_field_tbl) + 1];
393 static const struct attribute_group bq24190_sysfs_attr_group = {
394 .attrs = bq24190_sysfs_attrs,
397 static void bq24190_sysfs_init_attrs(void)
399 int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl);
401 for (i = 0; i < limit; i++)
402 bq24190_sysfs_attrs[i] = &bq24190_sysfs_field_tbl[i].attr.attr;
404 bq24190_sysfs_attrs[limit] = NULL; /* Has additional entry for this */
407 static struct bq24190_sysfs_field_info *bq24190_sysfs_field_lookup(
410 int i, limit = ARRAY_SIZE(bq24190_sysfs_field_tbl);
412 for (i = 0; i < limit; i++)
413 if (!strcmp(name, bq24190_sysfs_field_tbl[i].attr.attr.name))
419 return &bq24190_sysfs_field_tbl[i];
422 static ssize_t bq24190_sysfs_show(struct device *dev,
423 struct device_attribute *attr, char *buf)
425 struct power_supply *psy = dev_get_drvdata(dev);
426 struct bq24190_dev_info *bdi =
427 container_of(psy, struct bq24190_dev_info, charger);
428 struct bq24190_sysfs_field_info *info;
432 info = bq24190_sysfs_field_lookup(attr->attr.name);
436 ret = bq24190_read_mask(bdi, info->reg, info->mask, info->shift, &v);
440 return scnprintf(buf, PAGE_SIZE, "%hhx\n", v);
443 static ssize_t bq24190_sysfs_store(struct device *dev,
444 struct device_attribute *attr, const char *buf, size_t count)
446 struct power_supply *psy = dev_get_drvdata(dev);
447 struct bq24190_dev_info *bdi =
448 container_of(psy, struct bq24190_dev_info, charger);
449 struct bq24190_sysfs_field_info *info;
453 info = bq24190_sysfs_field_lookup(attr->attr.name);
457 ret = kstrtou8(buf, 0, &v);
461 ret = bq24190_write_mask(bdi, info->reg, info->mask, info->shift, v);
468 static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
470 bq24190_sysfs_init_attrs();
472 return sysfs_create_group(&bdi->charger.dev->kobj,
473 &bq24190_sysfs_attr_group);
476 static void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi)
478 sysfs_remove_group(&bdi->charger.dev->kobj, &bq24190_sysfs_attr_group);
481 static int bq24190_sysfs_create_group(struct bq24190_dev_info *bdi)
486 static inline void bq24190_sysfs_remove_group(struct bq24190_dev_info *bdi) {}
490 * According to the "Host Mode and default Mode" section of the
491 * manual, a write to any register causes the bq24190 to switch
492 * from default mode to host mode. It will switch back to default
493 * mode after a WDT timeout unless the WDT is turned off as well.
494 * So, by simply turning off the WDT, we accomplish both with the
497 static int bq24190_set_mode_host(struct bq24190_dev_info *bdi)
502 ret = bq24190_read(bdi, BQ24190_REG_CTTC, &v);
506 bdi->watchdog = ((v & BQ24190_REG_CTTC_WATCHDOG_MASK) >>
507 BQ24190_REG_CTTC_WATCHDOG_SHIFT);
508 v &= ~BQ24190_REG_CTTC_WATCHDOG_MASK;
510 return bq24190_write(bdi, BQ24190_REG_CTTC, v);
513 static int bq24190_register_reset(struct bq24190_dev_info *bdi)
515 int ret, limit = 100;
518 /* Reset the registers */
519 ret = bq24190_write_mask(bdi, BQ24190_REG_POC,
520 BQ24190_REG_POC_RESET_MASK,
521 BQ24190_REG_POC_RESET_SHIFT,
526 /* Reset bit will be cleared by hardware so poll until it is */
528 ret = bq24190_read_mask(bdi, BQ24190_REG_POC,
529 BQ24190_REG_POC_RESET_MASK,
530 BQ24190_REG_POC_RESET_SHIFT,
547 /* Charger power supply property routines */
549 static int bq24190_charger_get_charge_type(struct bq24190_dev_info *bdi,
550 union power_supply_propval *val)
555 ret = bq24190_read_mask(bdi, BQ24190_REG_POC,
556 BQ24190_REG_POC_CHG_CONFIG_MASK,
557 BQ24190_REG_POC_CHG_CONFIG_SHIFT,
562 /* If POC[CHG_CONFIG] (REG01[5:4]) == 0, charge is disabled */
564 type = POWER_SUPPLY_CHARGE_TYPE_NONE;
566 ret = bq24190_read_mask(bdi, BQ24190_REG_CCC,
567 BQ24190_REG_CCC_FORCE_20PCT_MASK,
568 BQ24190_REG_CCC_FORCE_20PCT_SHIFT,
573 type = (v) ? POWER_SUPPLY_CHARGE_TYPE_TRICKLE :
574 POWER_SUPPLY_CHARGE_TYPE_FAST;
582 static int bq24190_charger_set_charge_type(struct bq24190_dev_info *bdi,
583 const union power_supply_propval *val)
585 u8 chg_config, force_20pct, en_term;
589 * According to the "Termination when REG02[0] = 1" section of
590 * the bq24190 manual, the trickle charge could be less than the
591 * termination current so it recommends turning off the termination
594 * Note: AFAICT from the datasheet, the user will have to manually
595 * turn off the charging when in 20% mode. If its not turned off,
596 * there could be battery damage. So, use this mode at your own risk.
598 switch (val->intval) {
599 case POWER_SUPPLY_CHARGE_TYPE_NONE:
602 case POWER_SUPPLY_CHARGE_TYPE_TRICKLE:
607 case POWER_SUPPLY_CHARGE_TYPE_FAST:
616 if (chg_config) { /* Enabling the charger */
617 ret = bq24190_write_mask(bdi, BQ24190_REG_CCC,
618 BQ24190_REG_CCC_FORCE_20PCT_MASK,
619 BQ24190_REG_CCC_FORCE_20PCT_SHIFT,
624 ret = bq24190_write_mask(bdi, BQ24190_REG_CTTC,
625 BQ24190_REG_CTTC_EN_TERM_MASK,
626 BQ24190_REG_CTTC_EN_TERM_SHIFT,
632 return bq24190_write_mask(bdi, BQ24190_REG_POC,
633 BQ24190_REG_POC_CHG_CONFIG_MASK,
634 BQ24190_REG_POC_CHG_CONFIG_SHIFT, chg_config);
637 static int bq24190_charger_get_health(struct bq24190_dev_info *bdi,
638 union power_supply_propval *val)
643 mutex_lock(&bdi->f_reg_lock);
645 if (bdi->charger_health_valid) {
647 bdi->charger_health_valid = false;
648 mutex_unlock(&bdi->f_reg_lock);
650 mutex_unlock(&bdi->f_reg_lock);
652 ret = bq24190_read(bdi, BQ24190_REG_F, &v);
657 if (v & BQ24190_REG_F_BOOST_FAULT_MASK) {
659 * This could be over-current or over-voltage but there's
660 * no way to tell which. Return 'OVERVOLTAGE' since there
661 * isn't an 'OVERCURRENT' value defined that we can return
662 * even if it was over-current.
664 health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
666 v &= BQ24190_REG_F_CHRG_FAULT_MASK;
667 v >>= BQ24190_REG_F_CHRG_FAULT_SHIFT;
670 case 0x0: /* Normal */
671 health = POWER_SUPPLY_HEALTH_GOOD;
673 case 0x1: /* Input Fault (VBUS OVP or VBAT<VBUS<3.8V) */
675 * This could be over-voltage or under-voltage
676 * and there's no way to tell which. Instead
677 * of looking foolish and returning 'OVERVOLTAGE'
678 * when its really under-voltage, just return
681 health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
683 case 0x2: /* Thermal Shutdown */
684 health = POWER_SUPPLY_HEALTH_OVERHEAT;
686 case 0x3: /* Charge Safety Timer Expiration */
687 health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
690 health = POWER_SUPPLY_HEALTH_UNKNOWN;
694 val->intval = health;
699 static int bq24190_charger_get_online(struct bq24190_dev_info *bdi,
700 union power_supply_propval *val)
705 ret = bq24190_read_mask(bdi, BQ24190_REG_SS,
706 BQ24190_REG_SS_PG_STAT_MASK,
707 BQ24190_REG_SS_PG_STAT_SHIFT, &v);
715 static int bq24190_charger_get_current(struct bq24190_dev_info *bdi,
716 union power_supply_propval *val)
721 ret = bq24190_get_field_val(bdi, BQ24190_REG_CCC,
722 BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT,
723 bq24190_ccc_ichg_values,
724 ARRAY_SIZE(bq24190_ccc_ichg_values), &curr);
728 ret = bq24190_read_mask(bdi, BQ24190_REG_CCC,
729 BQ24190_REG_CCC_FORCE_20PCT_MASK,
730 BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v);
734 /* If FORCE_20PCT is enabled, then current is 20% of ICHG value */
742 static int bq24190_charger_get_current_max(struct bq24190_dev_info *bdi,
743 union power_supply_propval *val)
745 int idx = ARRAY_SIZE(bq24190_ccc_ichg_values) - 1;
747 val->intval = bq24190_ccc_ichg_values[idx];
751 static int bq24190_charger_set_current(struct bq24190_dev_info *bdi,
752 const union power_supply_propval *val)
755 int ret, curr = val->intval;
757 ret = bq24190_read_mask(bdi, BQ24190_REG_CCC,
758 BQ24190_REG_CCC_FORCE_20PCT_MASK,
759 BQ24190_REG_CCC_FORCE_20PCT_SHIFT, &v);
763 /* If FORCE_20PCT is enabled, have to multiply value passed in by 5 */
767 return bq24190_set_field_val(bdi, BQ24190_REG_CCC,
768 BQ24190_REG_CCC_ICHG_MASK, BQ24190_REG_CCC_ICHG_SHIFT,
769 bq24190_ccc_ichg_values,
770 ARRAY_SIZE(bq24190_ccc_ichg_values), curr);
773 static int bq24190_charger_get_voltage(struct bq24190_dev_info *bdi,
774 union power_supply_propval *val)
778 ret = bq24190_get_field_val(bdi, BQ24190_REG_CVC,
779 BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT,
780 bq24190_cvc_vreg_values,
781 ARRAY_SIZE(bq24190_cvc_vreg_values), &voltage);
785 val->intval = voltage;
789 static int bq24190_charger_get_voltage_max(struct bq24190_dev_info *bdi,
790 union power_supply_propval *val)
792 int idx = ARRAY_SIZE(bq24190_cvc_vreg_values) - 1;
794 val->intval = bq24190_cvc_vreg_values[idx];
798 static int bq24190_charger_set_voltage(struct bq24190_dev_info *bdi,
799 const union power_supply_propval *val)
801 return bq24190_set_field_val(bdi, BQ24190_REG_CVC,
802 BQ24190_REG_CVC_VREG_MASK, BQ24190_REG_CVC_VREG_SHIFT,
803 bq24190_cvc_vreg_values,
804 ARRAY_SIZE(bq24190_cvc_vreg_values), val->intval);
807 static int bq24190_charger_get_property(struct power_supply *psy,
808 enum power_supply_property psp, union power_supply_propval *val)
810 struct bq24190_dev_info *bdi =
811 container_of(psy, struct bq24190_dev_info, charger);
814 dev_dbg(bdi->dev, "prop: %d\n", psp);
816 pm_runtime_get_sync(bdi->dev);
819 case POWER_SUPPLY_PROP_CHARGE_TYPE:
820 ret = bq24190_charger_get_charge_type(bdi, val);
822 case POWER_SUPPLY_PROP_HEALTH:
823 ret = bq24190_charger_get_health(bdi, val);
825 case POWER_SUPPLY_PROP_ONLINE:
826 ret = bq24190_charger_get_online(bdi, val);
828 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
829 ret = bq24190_charger_get_current(bdi, val);
831 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
832 ret = bq24190_charger_get_current_max(bdi, val);
834 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
835 ret = bq24190_charger_get_voltage(bdi, val);
837 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
838 ret = bq24190_charger_get_voltage_max(bdi, val);
840 case POWER_SUPPLY_PROP_SCOPE:
841 val->intval = POWER_SUPPLY_SCOPE_SYSTEM;
844 case POWER_SUPPLY_PROP_MODEL_NAME:
845 val->strval = bdi->model_name;
848 case POWER_SUPPLY_PROP_MANUFACTURER:
849 val->strval = BQ24190_MANUFACTURER;
856 pm_runtime_put_sync(bdi->dev);
860 static int bq24190_charger_set_property(struct power_supply *psy,
861 enum power_supply_property psp,
862 const union power_supply_propval *val)
864 struct bq24190_dev_info *bdi =
865 container_of(psy, struct bq24190_dev_info, charger);
868 dev_dbg(bdi->dev, "prop: %d\n", psp);
870 pm_runtime_get_sync(bdi->dev);
873 case POWER_SUPPLY_PROP_CHARGE_TYPE:
874 ret = bq24190_charger_set_charge_type(bdi, val);
876 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
877 ret = bq24190_charger_set_current(bdi, val);
879 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
880 ret = bq24190_charger_set_voltage(bdi, val);
886 pm_runtime_put_sync(bdi->dev);
890 static int bq24190_charger_property_is_writeable(struct power_supply *psy,
891 enum power_supply_property psp)
896 case POWER_SUPPLY_PROP_CHARGE_TYPE:
897 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
898 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
908 static enum power_supply_property bq24190_charger_properties[] = {
909 POWER_SUPPLY_PROP_TYPE,
910 POWER_SUPPLY_PROP_HEALTH,
911 POWER_SUPPLY_PROP_ONLINE,
912 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
913 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
914 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
915 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
916 POWER_SUPPLY_PROP_SCOPE,
917 POWER_SUPPLY_PROP_MODEL_NAME,
918 POWER_SUPPLY_PROP_MANUFACTURER,
921 static char *bq24190_charger_supplied_to[] = {
925 static void bq24190_charger_init(struct power_supply *charger)
927 charger->name = "bq24190-charger";
928 charger->type = POWER_SUPPLY_TYPE_USB;
929 charger->properties = bq24190_charger_properties;
930 charger->num_properties = ARRAY_SIZE(bq24190_charger_properties);
931 charger->supplied_to = bq24190_charger_supplied_to;
932 charger->num_supplies = ARRAY_SIZE(bq24190_charger_supplied_to);
933 charger->get_property = bq24190_charger_get_property;
934 charger->set_property = bq24190_charger_set_property;
935 charger->property_is_writeable = bq24190_charger_property_is_writeable;
938 /* Battery power supply property routines */
940 static int bq24190_battery_get_status(struct bq24190_dev_info *bdi,
941 union power_supply_propval *val)
943 u8 ss_reg, chrg_fault;
946 mutex_lock(&bdi->f_reg_lock);
948 if (bdi->battery_status_valid) {
949 chrg_fault = bdi->f_reg;
950 bdi->battery_status_valid = false;
951 mutex_unlock(&bdi->f_reg_lock);
953 mutex_unlock(&bdi->f_reg_lock);
955 ret = bq24190_read(bdi, BQ24190_REG_F, &chrg_fault);
960 chrg_fault &= BQ24190_REG_F_CHRG_FAULT_MASK;
961 chrg_fault >>= BQ24190_REG_F_CHRG_FAULT_SHIFT;
963 ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg);
968 * The battery must be discharging when any of these are true:
969 * - there is no good power source;
970 * - there is a charge fault.
971 * Could also be discharging when in "supplement mode" but
972 * there is no way to tell when its in that mode.
974 if (!(ss_reg & BQ24190_REG_SS_PG_STAT_MASK) || chrg_fault) {
975 status = POWER_SUPPLY_STATUS_DISCHARGING;
977 ss_reg &= BQ24190_REG_SS_CHRG_STAT_MASK;
978 ss_reg >>= BQ24190_REG_SS_CHRG_STAT_SHIFT;
981 case 0x0: /* Not Charging */
982 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
984 case 0x1: /* Pre-charge */
985 case 0x2: /* Fast Charging */
986 status = POWER_SUPPLY_STATUS_CHARGING;
988 case 0x3: /* Charge Termination Done */
989 status = POWER_SUPPLY_STATUS_FULL;
997 val->intval = status;
1002 static int bq24190_battery_get_health(struct bq24190_dev_info *bdi,
1003 union power_supply_propval *val)
1008 mutex_lock(&bdi->f_reg_lock);
1010 if (bdi->battery_health_valid) {
1012 bdi->battery_health_valid = false;
1013 mutex_unlock(&bdi->f_reg_lock);
1015 mutex_unlock(&bdi->f_reg_lock);
1017 ret = bq24190_read(bdi, BQ24190_REG_F, &v);
1022 if (v & BQ24190_REG_F_BAT_FAULT_MASK) {
1023 health = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
1025 v &= BQ24190_REG_F_NTC_FAULT_MASK;
1026 v >>= BQ24190_REG_F_NTC_FAULT_SHIFT;
1029 case 0x0: /* Normal */
1030 health = POWER_SUPPLY_HEALTH_GOOD;
1032 case 0x1: /* TS1 Cold */
1033 case 0x3: /* TS2 Cold */
1034 case 0x5: /* Both Cold */
1035 health = POWER_SUPPLY_HEALTH_COLD;
1037 case 0x2: /* TS1 Hot */
1038 case 0x4: /* TS2 Hot */
1039 case 0x6: /* Both Hot */
1040 health = POWER_SUPPLY_HEALTH_OVERHEAT;
1043 health = POWER_SUPPLY_HEALTH_UNKNOWN;
1047 val->intval = health;
1051 static int bq24190_battery_get_online(struct bq24190_dev_info *bdi,
1052 union power_supply_propval *val)
1057 ret = bq24190_read_mask(bdi, BQ24190_REG_MOC,
1058 BQ24190_REG_MOC_BATFET_DISABLE_MASK,
1059 BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, &batfet_disable);
1063 val->intval = !batfet_disable;
1067 static int bq24190_battery_set_online(struct bq24190_dev_info *bdi,
1068 const union power_supply_propval *val)
1070 return bq24190_write_mask(bdi, BQ24190_REG_MOC,
1071 BQ24190_REG_MOC_BATFET_DISABLE_MASK,
1072 BQ24190_REG_MOC_BATFET_DISABLE_SHIFT, !val->intval);
1075 static int bq24190_battery_get_temp_alert_max(struct bq24190_dev_info *bdi,
1076 union power_supply_propval *val)
1080 ret = bq24190_get_field_val(bdi, BQ24190_REG_ICTRC,
1081 BQ24190_REG_ICTRC_TREG_MASK,
1082 BQ24190_REG_ICTRC_TREG_SHIFT,
1083 bq24190_ictrc_treg_values,
1084 ARRAY_SIZE(bq24190_ictrc_treg_values), &temp);
1092 static int bq24190_battery_set_temp_alert_max(struct bq24190_dev_info *bdi,
1093 const union power_supply_propval *val)
1095 return bq24190_set_field_val(bdi, BQ24190_REG_ICTRC,
1096 BQ24190_REG_ICTRC_TREG_MASK,
1097 BQ24190_REG_ICTRC_TREG_SHIFT,
1098 bq24190_ictrc_treg_values,
1099 ARRAY_SIZE(bq24190_ictrc_treg_values), val->intval);
1102 static int bq24190_battery_get_property(struct power_supply *psy,
1103 enum power_supply_property psp, union power_supply_propval *val)
1105 struct bq24190_dev_info *bdi =
1106 container_of(psy, struct bq24190_dev_info, battery);
1109 dev_dbg(bdi->dev, "prop: %d\n", psp);
1111 pm_runtime_get_sync(bdi->dev);
1114 case POWER_SUPPLY_PROP_STATUS:
1115 ret = bq24190_battery_get_status(bdi, val);
1117 case POWER_SUPPLY_PROP_HEALTH:
1118 ret = bq24190_battery_get_health(bdi, val);
1120 case POWER_SUPPLY_PROP_ONLINE:
1121 ret = bq24190_battery_get_online(bdi, val);
1123 case POWER_SUPPLY_PROP_TECHNOLOGY:
1124 /* Could be Li-on or Li-polymer but no way to tell which */
1125 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
1128 case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
1129 ret = bq24190_battery_get_temp_alert_max(bdi, val);
1131 case POWER_SUPPLY_PROP_SCOPE:
1132 val->intval = POWER_SUPPLY_SCOPE_SYSTEM;
1139 pm_runtime_put_sync(bdi->dev);
1143 static int bq24190_battery_set_property(struct power_supply *psy,
1144 enum power_supply_property psp,
1145 const union power_supply_propval *val)
1147 struct bq24190_dev_info *bdi =
1148 container_of(psy, struct bq24190_dev_info, battery);
1151 dev_dbg(bdi->dev, "prop: %d\n", psp);
1153 pm_runtime_put_sync(bdi->dev);
1156 case POWER_SUPPLY_PROP_ONLINE:
1157 ret = bq24190_battery_set_online(bdi, val);
1159 case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
1160 ret = bq24190_battery_set_temp_alert_max(bdi, val);
1166 pm_runtime_put_sync(bdi->dev);
1170 static int bq24190_battery_property_is_writeable(struct power_supply *psy,
1171 enum power_supply_property psp)
1176 case POWER_SUPPLY_PROP_ONLINE:
1177 case POWER_SUPPLY_PROP_TEMP_ALERT_MAX:
1187 static enum power_supply_property bq24190_battery_properties[] = {
1188 POWER_SUPPLY_PROP_STATUS,
1189 POWER_SUPPLY_PROP_HEALTH,
1190 POWER_SUPPLY_PROP_ONLINE,
1191 POWER_SUPPLY_PROP_TECHNOLOGY,
1192 POWER_SUPPLY_PROP_TEMP_ALERT_MAX,
1193 POWER_SUPPLY_PROP_SCOPE,
1196 static void bq24190_battery_init(struct power_supply *battery)
1198 battery->name = "bq24190-battery";
1199 battery->type = POWER_SUPPLY_TYPE_BATTERY;
1200 battery->properties = bq24190_battery_properties;
1201 battery->num_properties = ARRAY_SIZE(bq24190_battery_properties);
1202 battery->get_property = bq24190_battery_get_property;
1203 battery->set_property = bq24190_battery_set_property;
1204 battery->property_is_writeable = bq24190_battery_property_is_writeable;
1207 static irqreturn_t bq24190_irq_handler_thread(int irq, void *data)
1209 struct bq24190_dev_info *bdi = data;
1210 bool alert_userspace = false;
1214 pm_runtime_get_sync(bdi->dev);
1216 ret = bq24190_read(bdi, BQ24190_REG_SS, &ss_reg);
1218 dev_err(bdi->dev, "Can't read SS reg: %d\n", ret);
1222 if (ss_reg != bdi->ss_reg) {
1224 * The device is in host mode so when PG_STAT goes from 1->0
1225 * (i.e., power removed) HIZ needs to be disabled.
1227 if ((bdi->ss_reg & BQ24190_REG_SS_PG_STAT_MASK) &&
1228 !(ss_reg & BQ24190_REG_SS_PG_STAT_MASK)) {
1229 ret = bq24190_write_mask(bdi, BQ24190_REG_ISC,
1230 BQ24190_REG_ISC_EN_HIZ_MASK,
1231 BQ24190_REG_ISC_EN_HIZ_SHIFT,
1234 dev_err(bdi->dev, "Can't access ISC reg: %d\n",
1238 bdi->ss_reg = ss_reg;
1239 alert_userspace = true;
1242 mutex_lock(&bdi->f_reg_lock);
1244 ret = bq24190_read(bdi, BQ24190_REG_F, &f_reg);
1246 mutex_unlock(&bdi->f_reg_lock);
1247 dev_err(bdi->dev, "Can't read F reg: %d\n", ret);
1251 if (f_reg != bdi->f_reg) {
1253 bdi->charger_health_valid = true;
1254 bdi->battery_health_valid = true;
1255 bdi->battery_status_valid = true;
1257 alert_userspace = true;
1260 mutex_unlock(&bdi->f_reg_lock);
1263 * Sometimes bq24190 gives a steady trickle of interrupts even
1264 * though the watchdog timer is turned off and neither the STATUS
1265 * nor FAULT registers have changed. Weed out these sprurious
1266 * interrupts so userspace isn't alerted for no reason.
1267 * In addition, the chip always generates an interrupt after
1268 * register reset so we should ignore that one (the very first
1269 * interrupt received).
1271 if (alert_userspace && !bdi->first_time) {
1272 power_supply_changed(&bdi->charger);
1273 power_supply_changed(&bdi->battery);
1274 bdi->first_time = false;
1278 pm_runtime_put_sync(bdi->dev);
1280 dev_dbg(bdi->dev, "ss_reg: 0x%02x, f_reg: 0x%02x\n", ss_reg, f_reg);
1285 static int bq24190_hw_init(struct bq24190_dev_info *bdi)
1290 pm_runtime_get_sync(bdi->dev);
1292 /* First check that the device really is what its supposed to be */
1293 ret = bq24190_read_mask(bdi, BQ24190_REG_VPRS,
1294 BQ24190_REG_VPRS_PN_MASK,
1295 BQ24190_REG_VPRS_PN_SHIFT,
1300 if (v != bdi->model) {
1305 ret = bq24190_register_reset(bdi);
1309 ret = bq24190_set_mode_host(bdi);
1311 pm_runtime_put_sync(bdi->dev);
1316 static int bq24190_setup_dt(struct bq24190_dev_info *bdi)
1318 bdi->irq = irq_of_parse_and_map(bdi->dev->of_node, 0);
1325 static int bq24190_setup_dt(struct bq24190_dev_info *bdi)
1331 static int bq24190_setup_pdata(struct bq24190_dev_info *bdi,
1332 struct bq24190_platform_data *pdata)
1336 if (!gpio_is_valid(pdata->gpio_int))
1339 ret = gpio_request(pdata->gpio_int, dev_name(bdi->dev));
1343 ret = gpio_direction_input(pdata->gpio_int);
1347 bdi->irq = gpio_to_irq(pdata->gpio_int);
1351 bdi->gpio_int = pdata->gpio_int;
1355 gpio_free(pdata->gpio_int);
1359 static int bq24190_probe(struct i2c_client *client,
1360 const struct i2c_device_id *id)
1362 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1363 struct device *dev = &client->dev;
1364 struct bq24190_platform_data *pdata = client->dev.platform_data;
1365 struct bq24190_dev_info *bdi;
1368 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
1369 dev_err(dev, "No support for SMBUS_BYTE_DATA\n");
1373 bdi = devm_kzalloc(dev, sizeof(*bdi), GFP_KERNEL);
1375 dev_err(dev, "Can't alloc bdi struct\n");
1379 bdi->client = client;
1381 bdi->model = id->driver_data;
1382 strncpy(bdi->model_name, id->name, I2C_NAME_SIZE);
1383 mutex_init(&bdi->f_reg_lock);
1384 bdi->first_time = true;
1385 bdi->charger_health_valid = false;
1386 bdi->battery_health_valid = false;
1387 bdi->battery_status_valid = false;
1389 i2c_set_clientdata(client, bdi);
1392 ret = bq24190_setup_dt(bdi);
1394 ret = bq24190_setup_pdata(bdi, pdata);
1397 dev_err(dev, "Can't get irq info\n");
1401 ret = devm_request_threaded_irq(dev, bdi->irq, NULL,
1402 bq24190_irq_handler_thread,
1403 IRQF_TRIGGER_RISING | IRQF_ONESHOT,
1404 "bq24190-charger", bdi);
1406 dev_err(dev, "Can't set up irq handler\n");
1410 pm_runtime_enable(dev);
1411 pm_runtime_resume(dev);
1413 ret = bq24190_hw_init(bdi);
1415 dev_err(dev, "Hardware init failed\n");
1419 bq24190_charger_init(&bdi->charger);
1421 ret = power_supply_register(dev, &bdi->charger);
1423 dev_err(dev, "Can't register charger\n");
1427 bq24190_battery_init(&bdi->battery);
1429 ret = power_supply_register(dev, &bdi->battery);
1431 dev_err(dev, "Can't register battery\n");
1435 ret = bq24190_sysfs_create_group(bdi);
1437 dev_err(dev, "Can't create sysfs entries\n");
1444 power_supply_unregister(&bdi->battery);
1446 power_supply_unregister(&bdi->charger);
1448 pm_runtime_disable(dev);
1451 gpio_free(bdi->gpio_int);
1456 static int bq24190_remove(struct i2c_client *client)
1458 struct bq24190_dev_info *bdi = i2c_get_clientdata(client);
1460 pm_runtime_get_sync(bdi->dev);
1461 bq24190_register_reset(bdi);
1462 pm_runtime_put_sync(bdi->dev);
1464 bq24190_sysfs_remove_group(bdi);
1465 power_supply_unregister(&bdi->battery);
1466 power_supply_unregister(&bdi->charger);
1467 pm_runtime_disable(bdi->dev);
1470 gpio_free(bdi->gpio_int);
1475 #ifdef CONFIG_PM_SLEEP
1476 static int bq24190_pm_suspend(struct device *dev)
1478 struct i2c_client *client = to_i2c_client(dev);
1479 struct bq24190_dev_info *bdi = i2c_get_clientdata(client);
1481 pm_runtime_get_sync(bdi->dev);
1482 bq24190_register_reset(bdi);
1483 pm_runtime_put_sync(bdi->dev);
1488 static int bq24190_pm_resume(struct device *dev)
1490 struct i2c_client *client = to_i2c_client(dev);
1491 struct bq24190_dev_info *bdi = i2c_get_clientdata(client);
1493 bdi->charger_health_valid = false;
1494 bdi->battery_health_valid = false;
1495 bdi->battery_status_valid = false;
1497 pm_runtime_get_sync(bdi->dev);
1498 bq24190_register_reset(bdi);
1499 pm_runtime_put_sync(bdi->dev);
1501 /* Things may have changed while suspended so alert upper layer */
1502 power_supply_changed(&bdi->charger);
1503 power_supply_changed(&bdi->battery);
1509 static SIMPLE_DEV_PM_OPS(bq24190_pm_ops, bq24190_pm_suspend, bq24190_pm_resume);
1512 * Only support the bq24190 right now. The bq24192, bq24192i, and bq24193
1513 * are similar but not identical so the driver needs to be extended to
1516 static const struct i2c_device_id bq24190_i2c_ids[] = {
1517 { "bq24190", BQ24190_REG_VPRS_PN_24190 },
1522 static const struct of_device_id bq24190_of_match[] = {
1523 { .compatible = "ti,bq24190", },
1526 MODULE_DEVICE_TABLE(of, bq24190_of_match);
1528 static const struct of_device_id bq24190_of_match[] = {
1533 static struct i2c_driver bq24190_driver = {
1534 .probe = bq24190_probe,
1535 .remove = bq24190_remove,
1536 .id_table = bq24190_i2c_ids,
1538 .name = "bq24190-charger",
1539 .owner = THIS_MODULE,
1540 .pm = &bq24190_pm_ops,
1541 .of_match_table = of_match_ptr(bq24190_of_match),
1544 module_i2c_driver(bq24190_driver);
1546 MODULE_LICENSE("GPL");
1547 MODULE_AUTHOR("Mark A. Greer <mgreer@animalcreek.com>");
1548 MODULE_ALIAS("i2c:bq24190-charger");
1549 MODULE_DESCRIPTION("TI BQ24190 Charger Driver");