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342d765e MR |
1 | /* |
2 | * Battery charger driver for Dialog Semiconductor DA9030 | |
3 | * | |
4 | * Copyright (C) 2008 Compulab, Ltd. | |
5 | * Mike Rapoport <mike@compulab.co.il> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
342d765e MR |
14 | #include <linux/init.h> |
15 | #include <linux/types.h> | |
16 | #include <linux/device.h> | |
17 | #include <linux/workqueue.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/power_supply.h> | |
21 | #include <linux/mfd/da903x.h> | |
22 | ||
23 | #include <linux/debugfs.h> | |
24 | #include <linux/seq_file.h> | |
7e6c647e | 25 | #include <linux/notifier.h> |
342d765e | 26 | |
342d765e MR |
27 | #define DA9030_FAULT_LOG 0x0a |
28 | #define DA9030_FAULT_LOG_OVER_TEMP (1 << 7) | |
29 | #define DA9030_FAULT_LOG_VBAT_OVER (1 << 4) | |
30 | ||
31 | #define DA9030_CHARGE_CONTROL 0x28 | |
32 | #define DA9030_CHRG_CHARGER_ENABLE (1 << 7) | |
33 | ||
34 | #define DA9030_ADC_MAN_CONTROL 0x30 | |
35 | #define DA9030_ADC_TBATREF_ENABLE (1 << 5) | |
36 | #define DA9030_ADC_LDO_INT_ENABLE (1 << 4) | |
37 | ||
38 | #define DA9030_ADC_AUTO_CONTROL 0x31 | |
39 | #define DA9030_ADC_TBAT_ENABLE (1 << 5) | |
40 | #define DA9030_ADC_VBAT_IN_TXON (1 << 4) | |
41 | #define DA9030_ADC_VCH_ENABLE (1 << 3) | |
42 | #define DA9030_ADC_ICH_ENABLE (1 << 2) | |
43 | #define DA9030_ADC_VBAT_ENABLE (1 << 1) | |
44 | #define DA9030_ADC_AUTO_SLEEP_ENABLE (1 << 0) | |
45 | ||
46 | #define DA9030_VBATMON 0x32 | |
47 | #define DA9030_VBATMONTXON 0x33 | |
48 | #define DA9030_TBATHIGHP 0x34 | |
49 | #define DA9030_TBATHIGHN 0x35 | |
50 | #define DA9030_TBATLOW 0x36 | |
51 | ||
52 | #define DA9030_VBAT_RES 0x41 | |
53 | #define DA9030_VBATMIN_RES 0x42 | |
54 | #define DA9030_VBATMINTXON_RES 0x43 | |
55 | #define DA9030_ICHMAX_RES 0x44 | |
56 | #define DA9030_ICHMIN_RES 0x45 | |
57 | #define DA9030_ICHAVERAGE_RES 0x46 | |
58 | #define DA9030_VCHMAX_RES 0x47 | |
59 | #define DA9030_VCHMIN_RES 0x48 | |
60 | #define DA9030_TBAT_RES 0x49 | |
61 | ||
62 | struct da9030_adc_res { | |
63 | uint8_t vbat_res; | |
64 | uint8_t vbatmin_res; | |
65 | uint8_t vbatmintxon; | |
66 | uint8_t ichmax_res; | |
67 | uint8_t ichmin_res; | |
68 | uint8_t ichaverage_res; | |
69 | uint8_t vchmax_res; | |
70 | uint8_t vchmin_res; | |
71 | uint8_t tbat_res; | |
72 | uint8_t adc_in4_res; | |
73 | uint8_t adc_in5_res; | |
74 | }; | |
75 | ||
76 | struct da9030_battery_thresholds { | |
77 | int tbat_low; | |
78 | int tbat_high; | |
79 | int tbat_restart; | |
80 | ||
81 | int vbat_low; | |
82 | int vbat_crit; | |
83 | int vbat_charge_start; | |
84 | int vbat_charge_stop; | |
85 | int vbat_charge_restart; | |
86 | ||
87 | int vcharge_min; | |
88 | int vcharge_max; | |
89 | }; | |
90 | ||
91 | struct da9030_charger { | |
92 | struct power_supply psy; | |
93 | ||
94 | struct device *master; | |
95 | ||
96 | struct da9030_adc_res adc; | |
97 | struct delayed_work work; | |
98 | unsigned int interval; | |
99 | ||
100 | struct power_supply_info *battery_info; | |
101 | ||
102 | struct da9030_battery_thresholds thresholds; | |
103 | ||
104 | unsigned int charge_milliamp; | |
105 | unsigned int charge_millivolt; | |
106 | ||
107 | /* charger status */ | |
108 | bool chdet; | |
109 | uint8_t fault; | |
110 | int mA; | |
111 | int mV; | |
112 | bool is_on; | |
113 | ||
114 | struct notifier_block nb; | |
115 | ||
116 | /* platform callbacks for battery low and critical events */ | |
117 | void (*battery_low)(void); | |
118 | void (*battery_critical)(void); | |
119 | ||
120 | struct dentry *debug_file; | |
121 | }; | |
122 | ||
123 | static inline int da9030_reg_to_mV(int reg) | |
124 | { | |
125 | return ((reg * 2650) >> 8) + 2650; | |
126 | } | |
127 | ||
128 | static inline int da9030_millivolt_to_reg(int mV) | |
129 | { | |
130 | return ((mV - 2650) << 8) / 2650; | |
131 | } | |
132 | ||
133 | static inline int da9030_reg_to_mA(int reg) | |
134 | { | |
135 | return ((reg * 24000) >> 8) / 15; | |
136 | } | |
137 | ||
138 | #ifdef CONFIG_DEBUG_FS | |
139 | static int bat_debug_show(struct seq_file *s, void *data) | |
140 | { | |
141 | struct da9030_charger *charger = s->private; | |
142 | ||
143 | seq_printf(s, "charger is %s\n", charger->is_on ? "on" : "off"); | |
144 | if (charger->chdet) { | |
145 | seq_printf(s, "iset = %dmA, vset = %dmV\n", | |
146 | charger->mA, charger->mV); | |
147 | } | |
148 | ||
149 | seq_printf(s, "vbat_res = %d (%dmV)\n", | |
150 | charger->adc.vbat_res, | |
151 | da9030_reg_to_mV(charger->adc.vbat_res)); | |
152 | seq_printf(s, "vbatmin_res = %d (%dmV)\n", | |
153 | charger->adc.vbatmin_res, | |
154 | da9030_reg_to_mV(charger->adc.vbatmin_res)); | |
155 | seq_printf(s, "vbatmintxon = %d (%dmV)\n", | |
156 | charger->adc.vbatmintxon, | |
157 | da9030_reg_to_mV(charger->adc.vbatmintxon)); | |
158 | seq_printf(s, "ichmax_res = %d (%dmA)\n", | |
159 | charger->adc.ichmax_res, | |
160 | da9030_reg_to_mV(charger->adc.ichmax_res)); | |
161 | seq_printf(s, "ichmin_res = %d (%dmA)\n", | |
162 | charger->adc.ichmin_res, | |
163 | da9030_reg_to_mA(charger->adc.ichmin_res)); | |
164 | seq_printf(s, "ichaverage_res = %d (%dmA)\n", | |
165 | charger->adc.ichaverage_res, | |
166 | da9030_reg_to_mA(charger->adc.ichaverage_res)); | |
167 | seq_printf(s, "vchmax_res = %d (%dmV)\n", | |
168 | charger->adc.vchmax_res, | |
169 | da9030_reg_to_mA(charger->adc.vchmax_res)); | |
170 | seq_printf(s, "vchmin_res = %d (%dmV)\n", | |
171 | charger->adc.vchmin_res, | |
172 | da9030_reg_to_mV(charger->adc.vchmin_res)); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
177 | static int debug_open(struct inode *inode, struct file *file) | |
178 | { | |
179 | return single_open(file, bat_debug_show, inode->i_private); | |
180 | } | |
181 | ||
182 | static const struct file_operations bat_debug_fops = { | |
183 | .open = debug_open, | |
184 | .read = seq_read, | |
185 | .llseek = seq_lseek, | |
186 | .release = single_release, | |
187 | }; | |
188 | ||
189 | static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | |
190 | { | |
c084e092 AV |
191 | charger->debug_file = debugfs_create_file("charger", 0666, NULL, |
192 | charger, &bat_debug_fops); | |
342d765e MR |
193 | return charger->debug_file; |
194 | } | |
195 | ||
196 | static void da9030_bat_remove_debugfs(struct da9030_charger *charger) | |
197 | { | |
198 | debugfs_remove(charger->debug_file); | |
199 | } | |
200 | #else | |
201 | static inline struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | |
202 | { | |
203 | return NULL; | |
204 | } | |
205 | static inline void da9030_bat_remove_debugfs(struct da9030_charger *charger) | |
206 | { | |
207 | } | |
208 | #endif | |
209 | ||
210 | static inline void da9030_read_adc(struct da9030_charger *charger, | |
211 | struct da9030_adc_res *adc) | |
212 | { | |
213 | da903x_reads(charger->master, DA9030_VBAT_RES, | |
214 | sizeof(*adc), (uint8_t *)adc); | |
215 | } | |
216 | ||
217 | static void da9030_charger_update_state(struct da9030_charger *charger) | |
218 | { | |
219 | uint8_t val; | |
220 | ||
221 | da903x_read(charger->master, DA9030_CHARGE_CONTROL, &val); | |
222 | charger->is_on = (val & DA9030_CHRG_CHARGER_ENABLE) ? 1 : 0; | |
223 | charger->mA = ((val >> 3) & 0xf) * 100; | |
224 | charger->mV = (val & 0x7) * 50 + 4000; | |
225 | ||
226 | da9030_read_adc(charger, &charger->adc); | |
227 | da903x_read(charger->master, DA9030_FAULT_LOG, &charger->fault); | |
228 | charger->chdet = da903x_query_status(charger->master, | |
229 | DA9030_STATUS_CHDET); | |
230 | } | |
231 | ||
232 | static void da9030_set_charge(struct da9030_charger *charger, int on) | |
233 | { | |
234 | uint8_t val; | |
235 | ||
236 | if (on) { | |
237 | val = DA9030_CHRG_CHARGER_ENABLE; | |
238 | val |= (charger->charge_milliamp / 100) << 3; | |
239 | val |= (charger->charge_millivolt - 4000) / 50; | |
240 | charger->is_on = 1; | |
241 | } else { | |
242 | val = 0; | |
243 | charger->is_on = 0; | |
244 | } | |
245 | ||
246 | da903x_write(charger->master, DA9030_CHARGE_CONTROL, val); | |
a35d01a5 MR |
247 | |
248 | power_supply_changed(&charger->psy); | |
342d765e MR |
249 | } |
250 | ||
251 | static void da9030_charger_check_state(struct da9030_charger *charger) | |
252 | { | |
253 | da9030_charger_update_state(charger); | |
254 | ||
255 | /* we wake or boot with external power on */ | |
256 | if (!charger->is_on) { | |
257 | if ((charger->chdet) && | |
258 | (charger->adc.vbat_res < | |
259 | charger->thresholds.vbat_charge_start)) { | |
260 | da9030_set_charge(charger, 1); | |
261 | } | |
262 | } else { | |
a35d01a5 MR |
263 | /* Charger has been pulled out */ |
264 | if (!charger->chdet) { | |
265 | da9030_set_charge(charger, 0); | |
266 | return; | |
267 | } | |
268 | ||
342d765e MR |
269 | if (charger->adc.vbat_res >= |
270 | charger->thresholds.vbat_charge_stop) { | |
271 | da9030_set_charge(charger, 0); | |
272 | da903x_write(charger->master, DA9030_VBATMON, | |
273 | charger->thresholds.vbat_charge_restart); | |
274 | } else if (charger->adc.vbat_res > | |
275 | charger->thresholds.vbat_low) { | |
276 | /* we are charging and passed LOW_THRESH, | |
277 | so upate DA9030 VBAT threshold | |
278 | */ | |
279 | da903x_write(charger->master, DA9030_VBATMON, | |
280 | charger->thresholds.vbat_low); | |
281 | } | |
282 | if (charger->adc.vchmax_res > charger->thresholds.vcharge_max || | |
283 | charger->adc.vchmin_res < charger->thresholds.vcharge_min || | |
284 | /* Tempreture readings are negative */ | |
285 | charger->adc.tbat_res < charger->thresholds.tbat_high || | |
286 | charger->adc.tbat_res > charger->thresholds.tbat_low) { | |
287 | /* disable charger */ | |
288 | da9030_set_charge(charger, 0); | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
293 | static void da9030_charging_monitor(struct work_struct *work) | |
294 | { | |
295 | struct da9030_charger *charger; | |
296 | ||
297 | charger = container_of(work, struct da9030_charger, work.work); | |
298 | ||
299 | da9030_charger_check_state(charger); | |
300 | ||
301 | /* reschedule for the next time */ | |
302 | schedule_delayed_work(&charger->work, charger->interval); | |
303 | } | |
304 | ||
305 | static enum power_supply_property da9030_battery_props[] = { | |
306 | POWER_SUPPLY_PROP_MODEL_NAME, | |
307 | POWER_SUPPLY_PROP_STATUS, | |
308 | POWER_SUPPLY_PROP_HEALTH, | |
309 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
310 | POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, | |
311 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
312 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
313 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
314 | }; | |
315 | ||
316 | static void da9030_battery_check_status(struct da9030_charger *charger, | |
317 | union power_supply_propval *val) | |
318 | { | |
319 | if (charger->chdet) { | |
320 | if (charger->is_on) | |
321 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
322 | else | |
323 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
324 | } else { | |
325 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
326 | } | |
327 | } | |
328 | ||
329 | static void da9030_battery_check_health(struct da9030_charger *charger, | |
330 | union power_supply_propval *val) | |
331 | { | |
332 | if (charger->fault & DA9030_FAULT_LOG_OVER_TEMP) | |
333 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
334 | else if (charger->fault & DA9030_FAULT_LOG_VBAT_OVER) | |
335 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
336 | else | |
337 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
338 | } | |
339 | ||
340 | static int da9030_battery_get_property(struct power_supply *psy, | |
341 | enum power_supply_property psp, | |
342 | union power_supply_propval *val) | |
343 | { | |
344 | struct da9030_charger *charger; | |
345 | charger = container_of(psy, struct da9030_charger, psy); | |
346 | ||
347 | switch (psp) { | |
348 | case POWER_SUPPLY_PROP_STATUS: | |
349 | da9030_battery_check_status(charger, val); | |
350 | break; | |
351 | case POWER_SUPPLY_PROP_HEALTH: | |
352 | da9030_battery_check_health(charger, val); | |
353 | break; | |
354 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
355 | val->intval = charger->battery_info->technology; | |
356 | break; | |
357 | case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: | |
358 | val->intval = charger->battery_info->voltage_max_design; | |
359 | break; | |
360 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | |
361 | val->intval = charger->battery_info->voltage_min_design; | |
362 | break; | |
363 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
364 | val->intval = da9030_reg_to_mV(charger->adc.vbat_res) * 1000; | |
365 | break; | |
366 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
367 | val->intval = | |
368 | da9030_reg_to_mA(charger->adc.ichaverage_res) * 1000; | |
369 | break; | |
370 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
371 | val->strval = charger->battery_info->name; | |
372 | break; | |
373 | default: | |
374 | break; | |
375 | } | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | static void da9030_battery_vbat_event(struct da9030_charger *charger) | |
381 | { | |
382 | da9030_read_adc(charger, &charger->adc); | |
383 | ||
384 | if (charger->is_on) | |
385 | return; | |
386 | ||
387 | if (charger->adc.vbat_res < charger->thresholds.vbat_low) { | |
388 | /* set VBAT threshold for critical */ | |
389 | da903x_write(charger->master, DA9030_VBATMON, | |
390 | charger->thresholds.vbat_crit); | |
391 | if (charger->battery_low) | |
392 | charger->battery_low(); | |
393 | } else if (charger->adc.vbat_res < | |
394 | charger->thresholds.vbat_crit) { | |
395 | /* notify the system of battery critical */ | |
396 | if (charger->battery_critical) | |
397 | charger->battery_critical(); | |
398 | } | |
399 | } | |
400 | ||
401 | static int da9030_battery_event(struct notifier_block *nb, unsigned long event, | |
402 | void *data) | |
403 | { | |
404 | struct da9030_charger *charger = | |
405 | container_of(nb, struct da9030_charger, nb); | |
342d765e MR |
406 | |
407 | switch (event) { | |
408 | case DA9030_EVENT_CHDET: | |
a35d01a5 MR |
409 | cancel_delayed_work_sync(&charger->work); |
410 | schedule_work(&charger->work.work); | |
342d765e MR |
411 | break; |
412 | case DA9030_EVENT_VBATMON: | |
413 | da9030_battery_vbat_event(charger); | |
414 | break; | |
415 | case DA9030_EVENT_CHIOVER: | |
416 | case DA9030_EVENT_TBAT: | |
417 | da9030_set_charge(charger, 0); | |
418 | break; | |
419 | } | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static void da9030_battery_convert_thresholds(struct da9030_charger *charger, | |
425 | struct da9030_battery_info *pdata) | |
426 | { | |
427 | charger->thresholds.tbat_low = pdata->tbat_low; | |
428 | charger->thresholds.tbat_high = pdata->tbat_high; | |
429 | charger->thresholds.tbat_restart = pdata->tbat_restart; | |
430 | ||
431 | charger->thresholds.vbat_low = | |
432 | da9030_millivolt_to_reg(pdata->vbat_low); | |
433 | charger->thresholds.vbat_crit = | |
434 | da9030_millivolt_to_reg(pdata->vbat_crit); | |
435 | charger->thresholds.vbat_charge_start = | |
436 | da9030_millivolt_to_reg(pdata->vbat_charge_start); | |
437 | charger->thresholds.vbat_charge_stop = | |
438 | da9030_millivolt_to_reg(pdata->vbat_charge_stop); | |
439 | charger->thresholds.vbat_charge_restart = | |
440 | da9030_millivolt_to_reg(pdata->vbat_charge_restart); | |
441 | ||
442 | charger->thresholds.vcharge_min = | |
443 | da9030_millivolt_to_reg(pdata->vcharge_min); | |
444 | charger->thresholds.vcharge_max = | |
445 | da9030_millivolt_to_reg(pdata->vcharge_max); | |
446 | } | |
447 | ||
448 | static void da9030_battery_setup_psy(struct da9030_charger *charger) | |
449 | { | |
450 | struct power_supply *psy = &charger->psy; | |
451 | struct power_supply_info *info = charger->battery_info; | |
452 | ||
453 | psy->name = info->name; | |
454 | psy->use_for_apm = info->use_for_apm; | |
455 | psy->type = POWER_SUPPLY_TYPE_BATTERY; | |
456 | psy->get_property = da9030_battery_get_property; | |
457 | ||
458 | psy->properties = da9030_battery_props; | |
459 | psy->num_properties = ARRAY_SIZE(da9030_battery_props); | |
460 | }; | |
461 | ||
462 | static int da9030_battery_charger_init(struct da9030_charger *charger) | |
463 | { | |
464 | char v[5]; | |
465 | int ret; | |
466 | ||
467 | v[0] = v[1] = charger->thresholds.vbat_low; | |
468 | v[2] = charger->thresholds.tbat_high; | |
469 | v[3] = charger->thresholds.tbat_restart; | |
470 | v[4] = charger->thresholds.tbat_low; | |
471 | ||
472 | ret = da903x_writes(charger->master, DA9030_VBATMON, 5, v); | |
473 | if (ret) | |
474 | return ret; | |
475 | ||
476 | /* | |
477 | * Enable reference voltage supply for ADC from the LDO_INTERNAL | |
478 | * regulator. Must be set before ADC measurements can be made. | |
479 | */ | |
480 | ret = da903x_write(charger->master, DA9030_ADC_MAN_CONTROL, | |
481 | DA9030_ADC_LDO_INT_ENABLE | | |
482 | DA9030_ADC_TBATREF_ENABLE); | |
483 | if (ret) | |
484 | return ret; | |
485 | ||
486 | /* enable auto ADC measuremnts */ | |
487 | return da903x_write(charger->master, DA9030_ADC_AUTO_CONTROL, | |
488 | DA9030_ADC_TBAT_ENABLE | DA9030_ADC_VBAT_IN_TXON | | |
489 | DA9030_ADC_VCH_ENABLE | DA9030_ADC_ICH_ENABLE | | |
490 | DA9030_ADC_VBAT_ENABLE | | |
491 | DA9030_ADC_AUTO_SLEEP_ENABLE); | |
492 | } | |
493 | ||
494 | static int da9030_battery_probe(struct platform_device *pdev) | |
495 | { | |
496 | struct da9030_charger *charger; | |
497 | struct da9030_battery_info *pdata = pdev->dev.platform_data; | |
498 | int ret; | |
499 | ||
500 | if (pdata == NULL) | |
501 | return -EINVAL; | |
502 | ||
503 | if (pdata->charge_milliamp >= 1500 || | |
504 | pdata->charge_millivolt < 4000 || | |
505 | pdata->charge_millivolt > 4350) | |
506 | return -EINVAL; | |
507 | ||
bc67ea8e | 508 | charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL); |
342d765e MR |
509 | if (charger == NULL) |
510 | return -ENOMEM; | |
511 | ||
512 | charger->master = pdev->dev.parent; | |
513 | ||
5324dc0e | 514 | /* 10 seconds between monitor runs unless platform defines other |
342d765e MR |
515 | interval */ |
516 | charger->interval = msecs_to_jiffies( | |
517 | (pdata->batmon_interval ? : 10) * 1000); | |
518 | ||
519 | charger->charge_milliamp = pdata->charge_milliamp; | |
520 | charger->charge_millivolt = pdata->charge_millivolt; | |
521 | charger->battery_info = pdata->battery_info; | |
522 | charger->battery_low = pdata->battery_low; | |
523 | charger->battery_critical = pdata->battery_critical; | |
524 | ||
525 | da9030_battery_convert_thresholds(charger, pdata); | |
526 | ||
527 | ret = da9030_battery_charger_init(charger); | |
528 | if (ret) | |
529 | goto err_charger_init; | |
530 | ||
531 | INIT_DELAYED_WORK(&charger->work, da9030_charging_monitor); | |
532 | schedule_delayed_work(&charger->work, charger->interval); | |
533 | ||
534 | charger->nb.notifier_call = da9030_battery_event; | |
535 | ret = da903x_register_notifier(charger->master, &charger->nb, | |
536 | DA9030_EVENT_CHDET | | |
537 | DA9030_EVENT_VBATMON | | |
538 | DA9030_EVENT_CHIOVER | | |
539 | DA9030_EVENT_TBAT); | |
540 | if (ret) | |
541 | goto err_notifier; | |
542 | ||
543 | da9030_battery_setup_psy(charger); | |
544 | ret = power_supply_register(&pdev->dev, &charger->psy); | |
545 | if (ret) | |
546 | goto err_ps_register; | |
547 | ||
548 | charger->debug_file = da9030_bat_create_debugfs(charger); | |
549 | platform_set_drvdata(pdev, charger); | |
550 | return 0; | |
551 | ||
552 | err_ps_register: | |
553 | da903x_unregister_notifier(charger->master, &charger->nb, | |
554 | DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON | | |
555 | DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT); | |
556 | err_notifier: | |
557 | cancel_delayed_work(&charger->work); | |
558 | ||
559 | err_charger_init: | |
342d765e MR |
560 | return ret; |
561 | } | |
562 | ||
563 | static int da9030_battery_remove(struct platform_device *dev) | |
564 | { | |
565 | struct da9030_charger *charger = platform_get_drvdata(dev); | |
566 | ||
567 | da9030_bat_remove_debugfs(charger); | |
568 | ||
569 | da903x_unregister_notifier(charger->master, &charger->nb, | |
570 | DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON | | |
571 | DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT); | |
a35d01a5 MR |
572 | cancel_delayed_work_sync(&charger->work); |
573 | da9030_set_charge(charger, 0); | |
342d765e MR |
574 | power_supply_unregister(&charger->psy); |
575 | ||
342d765e MR |
576 | return 0; |
577 | } | |
578 | ||
579 | static struct platform_driver da903x_battery_driver = { | |
580 | .driver = { | |
581 | .name = "da903x-battery", | |
582 | .owner = THIS_MODULE, | |
583 | }, | |
584 | .probe = da9030_battery_probe, | |
585 | .remove = da9030_battery_remove, | |
586 | }; | |
587 | ||
300bac7f | 588 | module_platform_driver(da903x_battery_driver); |
342d765e MR |
589 | |
590 | MODULE_DESCRIPTION("DA9030 battery charger driver"); | |
591 | MODULE_AUTHOR("Mike Rapoport, CompuLab"); | |
592 | MODULE_LICENSE("GPL"); |