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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> | |
13 | #include <linux/init.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/workqueue.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/power_supply.h> | |
20 | #include <linux/mfd/da903x.h> | |
21 | ||
22 | #include <linux/debugfs.h> | |
23 | #include <linux/seq_file.h> | |
24 | ||
342d765e MR |
25 | #define DA9030_FAULT_LOG 0x0a |
26 | #define DA9030_FAULT_LOG_OVER_TEMP (1 << 7) | |
27 | #define DA9030_FAULT_LOG_VBAT_OVER (1 << 4) | |
28 | ||
29 | #define DA9030_CHARGE_CONTROL 0x28 | |
30 | #define DA9030_CHRG_CHARGER_ENABLE (1 << 7) | |
31 | ||
32 | #define DA9030_ADC_MAN_CONTROL 0x30 | |
33 | #define DA9030_ADC_TBATREF_ENABLE (1 << 5) | |
34 | #define DA9030_ADC_LDO_INT_ENABLE (1 << 4) | |
35 | ||
36 | #define DA9030_ADC_AUTO_CONTROL 0x31 | |
37 | #define DA9030_ADC_TBAT_ENABLE (1 << 5) | |
38 | #define DA9030_ADC_VBAT_IN_TXON (1 << 4) | |
39 | #define DA9030_ADC_VCH_ENABLE (1 << 3) | |
40 | #define DA9030_ADC_ICH_ENABLE (1 << 2) | |
41 | #define DA9030_ADC_VBAT_ENABLE (1 << 1) | |
42 | #define DA9030_ADC_AUTO_SLEEP_ENABLE (1 << 0) | |
43 | ||
44 | #define DA9030_VBATMON 0x32 | |
45 | #define DA9030_VBATMONTXON 0x33 | |
46 | #define DA9030_TBATHIGHP 0x34 | |
47 | #define DA9030_TBATHIGHN 0x35 | |
48 | #define DA9030_TBATLOW 0x36 | |
49 | ||
50 | #define DA9030_VBAT_RES 0x41 | |
51 | #define DA9030_VBATMIN_RES 0x42 | |
52 | #define DA9030_VBATMINTXON_RES 0x43 | |
53 | #define DA9030_ICHMAX_RES 0x44 | |
54 | #define DA9030_ICHMIN_RES 0x45 | |
55 | #define DA9030_ICHAVERAGE_RES 0x46 | |
56 | #define DA9030_VCHMAX_RES 0x47 | |
57 | #define DA9030_VCHMIN_RES 0x48 | |
58 | #define DA9030_TBAT_RES 0x49 | |
59 | ||
60 | struct da9030_adc_res { | |
61 | uint8_t vbat_res; | |
62 | uint8_t vbatmin_res; | |
63 | uint8_t vbatmintxon; | |
64 | uint8_t ichmax_res; | |
65 | uint8_t ichmin_res; | |
66 | uint8_t ichaverage_res; | |
67 | uint8_t vchmax_res; | |
68 | uint8_t vchmin_res; | |
69 | uint8_t tbat_res; | |
70 | uint8_t adc_in4_res; | |
71 | uint8_t adc_in5_res; | |
72 | }; | |
73 | ||
74 | struct da9030_battery_thresholds { | |
75 | int tbat_low; | |
76 | int tbat_high; | |
77 | int tbat_restart; | |
78 | ||
79 | int vbat_low; | |
80 | int vbat_crit; | |
81 | int vbat_charge_start; | |
82 | int vbat_charge_stop; | |
83 | int vbat_charge_restart; | |
84 | ||
85 | int vcharge_min; | |
86 | int vcharge_max; | |
87 | }; | |
88 | ||
89 | struct da9030_charger { | |
90 | struct power_supply psy; | |
91 | ||
92 | struct device *master; | |
93 | ||
94 | struct da9030_adc_res adc; | |
95 | struct delayed_work work; | |
96 | unsigned int interval; | |
97 | ||
98 | struct power_supply_info *battery_info; | |
99 | ||
100 | struct da9030_battery_thresholds thresholds; | |
101 | ||
102 | unsigned int charge_milliamp; | |
103 | unsigned int charge_millivolt; | |
104 | ||
105 | /* charger status */ | |
106 | bool chdet; | |
107 | uint8_t fault; | |
108 | int mA; | |
109 | int mV; | |
110 | bool is_on; | |
111 | ||
112 | struct notifier_block nb; | |
113 | ||
114 | /* platform callbacks for battery low and critical events */ | |
115 | void (*battery_low)(void); | |
116 | void (*battery_critical)(void); | |
117 | ||
118 | struct dentry *debug_file; | |
119 | }; | |
120 | ||
121 | static inline int da9030_reg_to_mV(int reg) | |
122 | { | |
123 | return ((reg * 2650) >> 8) + 2650; | |
124 | } | |
125 | ||
126 | static inline int da9030_millivolt_to_reg(int mV) | |
127 | { | |
128 | return ((mV - 2650) << 8) / 2650; | |
129 | } | |
130 | ||
131 | static inline int da9030_reg_to_mA(int reg) | |
132 | { | |
133 | return ((reg * 24000) >> 8) / 15; | |
134 | } | |
135 | ||
136 | #ifdef CONFIG_DEBUG_FS | |
137 | static int bat_debug_show(struct seq_file *s, void *data) | |
138 | { | |
139 | struct da9030_charger *charger = s->private; | |
140 | ||
141 | seq_printf(s, "charger is %s\n", charger->is_on ? "on" : "off"); | |
142 | if (charger->chdet) { | |
143 | seq_printf(s, "iset = %dmA, vset = %dmV\n", | |
144 | charger->mA, charger->mV); | |
145 | } | |
146 | ||
147 | seq_printf(s, "vbat_res = %d (%dmV)\n", | |
148 | charger->adc.vbat_res, | |
149 | da9030_reg_to_mV(charger->adc.vbat_res)); | |
150 | seq_printf(s, "vbatmin_res = %d (%dmV)\n", | |
151 | charger->adc.vbatmin_res, | |
152 | da9030_reg_to_mV(charger->adc.vbatmin_res)); | |
153 | seq_printf(s, "vbatmintxon = %d (%dmV)\n", | |
154 | charger->adc.vbatmintxon, | |
155 | da9030_reg_to_mV(charger->adc.vbatmintxon)); | |
156 | seq_printf(s, "ichmax_res = %d (%dmA)\n", | |
157 | charger->adc.ichmax_res, | |
158 | da9030_reg_to_mV(charger->adc.ichmax_res)); | |
159 | seq_printf(s, "ichmin_res = %d (%dmA)\n", | |
160 | charger->adc.ichmin_res, | |
161 | da9030_reg_to_mA(charger->adc.ichmin_res)); | |
162 | seq_printf(s, "ichaverage_res = %d (%dmA)\n", | |
163 | charger->adc.ichaverage_res, | |
164 | da9030_reg_to_mA(charger->adc.ichaverage_res)); | |
165 | seq_printf(s, "vchmax_res = %d (%dmV)\n", | |
166 | charger->adc.vchmax_res, | |
167 | da9030_reg_to_mA(charger->adc.vchmax_res)); | |
168 | seq_printf(s, "vchmin_res = %d (%dmV)\n", | |
169 | charger->adc.vchmin_res, | |
170 | da9030_reg_to_mV(charger->adc.vchmin_res)); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
175 | static int debug_open(struct inode *inode, struct file *file) | |
176 | { | |
177 | return single_open(file, bat_debug_show, inode->i_private); | |
178 | } | |
179 | ||
180 | static const struct file_operations bat_debug_fops = { | |
181 | .open = debug_open, | |
182 | .read = seq_read, | |
183 | .llseek = seq_lseek, | |
184 | .release = single_release, | |
185 | }; | |
186 | ||
187 | static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | |
188 | { | |
189 | charger->debug_file = debugfs_create_file("charger", 0666, 0, charger, | |
190 | &bat_debug_fops); | |
191 | return charger->debug_file; | |
192 | } | |
193 | ||
194 | static void da9030_bat_remove_debugfs(struct da9030_charger *charger) | |
195 | { | |
196 | debugfs_remove(charger->debug_file); | |
197 | } | |
198 | #else | |
199 | static inline struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger) | |
200 | { | |
201 | return NULL; | |
202 | } | |
203 | static inline void da9030_bat_remove_debugfs(struct da9030_charger *charger) | |
204 | { | |
205 | } | |
206 | #endif | |
207 | ||
208 | static inline void da9030_read_adc(struct da9030_charger *charger, | |
209 | struct da9030_adc_res *adc) | |
210 | { | |
211 | da903x_reads(charger->master, DA9030_VBAT_RES, | |
212 | sizeof(*adc), (uint8_t *)adc); | |
213 | } | |
214 | ||
215 | static void da9030_charger_update_state(struct da9030_charger *charger) | |
216 | { | |
217 | uint8_t val; | |
218 | ||
219 | da903x_read(charger->master, DA9030_CHARGE_CONTROL, &val); | |
220 | charger->is_on = (val & DA9030_CHRG_CHARGER_ENABLE) ? 1 : 0; | |
221 | charger->mA = ((val >> 3) & 0xf) * 100; | |
222 | charger->mV = (val & 0x7) * 50 + 4000; | |
223 | ||
224 | da9030_read_adc(charger, &charger->adc); | |
225 | da903x_read(charger->master, DA9030_FAULT_LOG, &charger->fault); | |
226 | charger->chdet = da903x_query_status(charger->master, | |
227 | DA9030_STATUS_CHDET); | |
228 | } | |
229 | ||
230 | static void da9030_set_charge(struct da9030_charger *charger, int on) | |
231 | { | |
232 | uint8_t val; | |
233 | ||
234 | if (on) { | |
235 | val = DA9030_CHRG_CHARGER_ENABLE; | |
236 | val |= (charger->charge_milliamp / 100) << 3; | |
237 | val |= (charger->charge_millivolt - 4000) / 50; | |
238 | charger->is_on = 1; | |
239 | } else { | |
240 | val = 0; | |
241 | charger->is_on = 0; | |
242 | } | |
243 | ||
244 | da903x_write(charger->master, DA9030_CHARGE_CONTROL, val); | |
a35d01a5 MR |
245 | |
246 | power_supply_changed(&charger->psy); | |
342d765e MR |
247 | } |
248 | ||
249 | static void da9030_charger_check_state(struct da9030_charger *charger) | |
250 | { | |
251 | da9030_charger_update_state(charger); | |
252 | ||
253 | /* we wake or boot with external power on */ | |
254 | if (!charger->is_on) { | |
255 | if ((charger->chdet) && | |
256 | (charger->adc.vbat_res < | |
257 | charger->thresholds.vbat_charge_start)) { | |
258 | da9030_set_charge(charger, 1); | |
259 | } | |
260 | } else { | |
a35d01a5 MR |
261 | /* Charger has been pulled out */ |
262 | if (!charger->chdet) { | |
263 | da9030_set_charge(charger, 0); | |
264 | return; | |
265 | } | |
266 | ||
342d765e MR |
267 | if (charger->adc.vbat_res >= |
268 | charger->thresholds.vbat_charge_stop) { | |
269 | da9030_set_charge(charger, 0); | |
270 | da903x_write(charger->master, DA9030_VBATMON, | |
271 | charger->thresholds.vbat_charge_restart); | |
272 | } else if (charger->adc.vbat_res > | |
273 | charger->thresholds.vbat_low) { | |
274 | /* we are charging and passed LOW_THRESH, | |
275 | so upate DA9030 VBAT threshold | |
276 | */ | |
277 | da903x_write(charger->master, DA9030_VBATMON, | |
278 | charger->thresholds.vbat_low); | |
279 | } | |
280 | if (charger->adc.vchmax_res > charger->thresholds.vcharge_max || | |
281 | charger->adc.vchmin_res < charger->thresholds.vcharge_min || | |
282 | /* Tempreture readings are negative */ | |
283 | charger->adc.tbat_res < charger->thresholds.tbat_high || | |
284 | charger->adc.tbat_res > charger->thresholds.tbat_low) { | |
285 | /* disable charger */ | |
286 | da9030_set_charge(charger, 0); | |
287 | } | |
288 | } | |
289 | } | |
290 | ||
291 | static void da9030_charging_monitor(struct work_struct *work) | |
292 | { | |
293 | struct da9030_charger *charger; | |
294 | ||
295 | charger = container_of(work, struct da9030_charger, work.work); | |
296 | ||
297 | da9030_charger_check_state(charger); | |
298 | ||
299 | /* reschedule for the next time */ | |
300 | schedule_delayed_work(&charger->work, charger->interval); | |
301 | } | |
302 | ||
303 | static enum power_supply_property da9030_battery_props[] = { | |
304 | POWER_SUPPLY_PROP_MODEL_NAME, | |
305 | POWER_SUPPLY_PROP_STATUS, | |
306 | POWER_SUPPLY_PROP_HEALTH, | |
307 | POWER_SUPPLY_PROP_TECHNOLOGY, | |
308 | POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, | |
309 | POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, | |
310 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
311 | POWER_SUPPLY_PROP_CURRENT_AVG, | |
312 | }; | |
313 | ||
314 | static void da9030_battery_check_status(struct da9030_charger *charger, | |
315 | union power_supply_propval *val) | |
316 | { | |
317 | if (charger->chdet) { | |
318 | if (charger->is_on) | |
319 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
320 | else | |
321 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
322 | } else { | |
323 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
324 | } | |
325 | } | |
326 | ||
327 | static void da9030_battery_check_health(struct da9030_charger *charger, | |
328 | union power_supply_propval *val) | |
329 | { | |
330 | if (charger->fault & DA9030_FAULT_LOG_OVER_TEMP) | |
331 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
332 | else if (charger->fault & DA9030_FAULT_LOG_VBAT_OVER) | |
333 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
334 | else | |
335 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
336 | } | |
337 | ||
338 | static int da9030_battery_get_property(struct power_supply *psy, | |
339 | enum power_supply_property psp, | |
340 | union power_supply_propval *val) | |
341 | { | |
342 | struct da9030_charger *charger; | |
343 | charger = container_of(psy, struct da9030_charger, psy); | |
344 | ||
345 | switch (psp) { | |
346 | case POWER_SUPPLY_PROP_STATUS: | |
347 | da9030_battery_check_status(charger, val); | |
348 | break; | |
349 | case POWER_SUPPLY_PROP_HEALTH: | |
350 | da9030_battery_check_health(charger, val); | |
351 | break; | |
352 | case POWER_SUPPLY_PROP_TECHNOLOGY: | |
353 | val->intval = charger->battery_info->technology; | |
354 | break; | |
355 | case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: | |
356 | val->intval = charger->battery_info->voltage_max_design; | |
357 | break; | |
358 | case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: | |
359 | val->intval = charger->battery_info->voltage_min_design; | |
360 | break; | |
361 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
362 | val->intval = da9030_reg_to_mV(charger->adc.vbat_res) * 1000; | |
363 | break; | |
364 | case POWER_SUPPLY_PROP_CURRENT_AVG: | |
365 | val->intval = | |
366 | da9030_reg_to_mA(charger->adc.ichaverage_res) * 1000; | |
367 | break; | |
368 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
369 | val->strval = charger->battery_info->name; | |
370 | break; | |
371 | default: | |
372 | break; | |
373 | } | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | static void da9030_battery_vbat_event(struct da9030_charger *charger) | |
379 | { | |
380 | da9030_read_adc(charger, &charger->adc); | |
381 | ||
382 | if (charger->is_on) | |
383 | return; | |
384 | ||
385 | if (charger->adc.vbat_res < charger->thresholds.vbat_low) { | |
386 | /* set VBAT threshold for critical */ | |
387 | da903x_write(charger->master, DA9030_VBATMON, | |
388 | charger->thresholds.vbat_crit); | |
389 | if (charger->battery_low) | |
390 | charger->battery_low(); | |
391 | } else if (charger->adc.vbat_res < | |
392 | charger->thresholds.vbat_crit) { | |
393 | /* notify the system of battery critical */ | |
394 | if (charger->battery_critical) | |
395 | charger->battery_critical(); | |
396 | } | |
397 | } | |
398 | ||
399 | static int da9030_battery_event(struct notifier_block *nb, unsigned long event, | |
400 | void *data) | |
401 | { | |
402 | struct da9030_charger *charger = | |
403 | container_of(nb, struct da9030_charger, nb); | |
342d765e MR |
404 | |
405 | switch (event) { | |
406 | case DA9030_EVENT_CHDET: | |
a35d01a5 MR |
407 | cancel_delayed_work_sync(&charger->work); |
408 | schedule_work(&charger->work.work); | |
342d765e MR |
409 | break; |
410 | case DA9030_EVENT_VBATMON: | |
411 | da9030_battery_vbat_event(charger); | |
412 | break; | |
413 | case DA9030_EVENT_CHIOVER: | |
414 | case DA9030_EVENT_TBAT: | |
415 | da9030_set_charge(charger, 0); | |
416 | break; | |
417 | } | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | static void da9030_battery_convert_thresholds(struct da9030_charger *charger, | |
423 | struct da9030_battery_info *pdata) | |
424 | { | |
425 | charger->thresholds.tbat_low = pdata->tbat_low; | |
426 | charger->thresholds.tbat_high = pdata->tbat_high; | |
427 | charger->thresholds.tbat_restart = pdata->tbat_restart; | |
428 | ||
429 | charger->thresholds.vbat_low = | |
430 | da9030_millivolt_to_reg(pdata->vbat_low); | |
431 | charger->thresholds.vbat_crit = | |
432 | da9030_millivolt_to_reg(pdata->vbat_crit); | |
433 | charger->thresholds.vbat_charge_start = | |
434 | da9030_millivolt_to_reg(pdata->vbat_charge_start); | |
435 | charger->thresholds.vbat_charge_stop = | |
436 | da9030_millivolt_to_reg(pdata->vbat_charge_stop); | |
437 | charger->thresholds.vbat_charge_restart = | |
438 | da9030_millivolt_to_reg(pdata->vbat_charge_restart); | |
439 | ||
440 | charger->thresholds.vcharge_min = | |
441 | da9030_millivolt_to_reg(pdata->vcharge_min); | |
442 | charger->thresholds.vcharge_max = | |
443 | da9030_millivolt_to_reg(pdata->vcharge_max); | |
444 | } | |
445 | ||
446 | static void da9030_battery_setup_psy(struct da9030_charger *charger) | |
447 | { | |
448 | struct power_supply *psy = &charger->psy; | |
449 | struct power_supply_info *info = charger->battery_info; | |
450 | ||
451 | psy->name = info->name; | |
452 | psy->use_for_apm = info->use_for_apm; | |
453 | psy->type = POWER_SUPPLY_TYPE_BATTERY; | |
454 | psy->get_property = da9030_battery_get_property; | |
455 | ||
456 | psy->properties = da9030_battery_props; | |
457 | psy->num_properties = ARRAY_SIZE(da9030_battery_props); | |
458 | }; | |
459 | ||
460 | static int da9030_battery_charger_init(struct da9030_charger *charger) | |
461 | { | |
462 | char v[5]; | |
463 | int ret; | |
464 | ||
465 | v[0] = v[1] = charger->thresholds.vbat_low; | |
466 | v[2] = charger->thresholds.tbat_high; | |
467 | v[3] = charger->thresholds.tbat_restart; | |
468 | v[4] = charger->thresholds.tbat_low; | |
469 | ||
470 | ret = da903x_writes(charger->master, DA9030_VBATMON, 5, v); | |
471 | if (ret) | |
472 | return ret; | |
473 | ||
474 | /* | |
475 | * Enable reference voltage supply for ADC from the LDO_INTERNAL | |
476 | * regulator. Must be set before ADC measurements can be made. | |
477 | */ | |
478 | ret = da903x_write(charger->master, DA9030_ADC_MAN_CONTROL, | |
479 | DA9030_ADC_LDO_INT_ENABLE | | |
480 | DA9030_ADC_TBATREF_ENABLE); | |
481 | if (ret) | |
482 | return ret; | |
483 | ||
484 | /* enable auto ADC measuremnts */ | |
485 | return da903x_write(charger->master, DA9030_ADC_AUTO_CONTROL, | |
486 | DA9030_ADC_TBAT_ENABLE | DA9030_ADC_VBAT_IN_TXON | | |
487 | DA9030_ADC_VCH_ENABLE | DA9030_ADC_ICH_ENABLE | | |
488 | DA9030_ADC_VBAT_ENABLE | | |
489 | DA9030_ADC_AUTO_SLEEP_ENABLE); | |
490 | } | |
491 | ||
492 | static int da9030_battery_probe(struct platform_device *pdev) | |
493 | { | |
494 | struct da9030_charger *charger; | |
495 | struct da9030_battery_info *pdata = pdev->dev.platform_data; | |
496 | int ret; | |
497 | ||
498 | if (pdata == NULL) | |
499 | return -EINVAL; | |
500 | ||
501 | if (pdata->charge_milliamp >= 1500 || | |
502 | pdata->charge_millivolt < 4000 || | |
503 | pdata->charge_millivolt > 4350) | |
504 | return -EINVAL; | |
505 | ||
506 | charger = kzalloc(sizeof(*charger), GFP_KERNEL); | |
507 | if (charger == NULL) | |
508 | return -ENOMEM; | |
509 | ||
510 | charger->master = pdev->dev.parent; | |
511 | ||
512 | /* 10 seconds between monotor runs unless platfrom defines other | |
513 | interval */ | |
514 | charger->interval = msecs_to_jiffies( | |
515 | (pdata->batmon_interval ? : 10) * 1000); | |
516 | ||
517 | charger->charge_milliamp = pdata->charge_milliamp; | |
518 | charger->charge_millivolt = pdata->charge_millivolt; | |
519 | charger->battery_info = pdata->battery_info; | |
520 | charger->battery_low = pdata->battery_low; | |
521 | charger->battery_critical = pdata->battery_critical; | |
522 | ||
523 | da9030_battery_convert_thresholds(charger, pdata); | |
524 | ||
525 | ret = da9030_battery_charger_init(charger); | |
526 | if (ret) | |
527 | goto err_charger_init; | |
528 | ||
529 | INIT_DELAYED_WORK(&charger->work, da9030_charging_monitor); | |
530 | schedule_delayed_work(&charger->work, charger->interval); | |
531 | ||
532 | charger->nb.notifier_call = da9030_battery_event; | |
533 | ret = da903x_register_notifier(charger->master, &charger->nb, | |
534 | DA9030_EVENT_CHDET | | |
535 | DA9030_EVENT_VBATMON | | |
536 | DA9030_EVENT_CHIOVER | | |
537 | DA9030_EVENT_TBAT); | |
538 | if (ret) | |
539 | goto err_notifier; | |
540 | ||
541 | da9030_battery_setup_psy(charger); | |
542 | ret = power_supply_register(&pdev->dev, &charger->psy); | |
543 | if (ret) | |
544 | goto err_ps_register; | |
545 | ||
546 | charger->debug_file = da9030_bat_create_debugfs(charger); | |
547 | platform_set_drvdata(pdev, charger); | |
548 | return 0; | |
549 | ||
550 | err_ps_register: | |
551 | da903x_unregister_notifier(charger->master, &charger->nb, | |
552 | DA9030_EVENT_CHDET | DA9030_EVENT_VBATMON | | |
553 | DA9030_EVENT_CHIOVER | DA9030_EVENT_TBAT); | |
554 | err_notifier: | |
555 | cancel_delayed_work(&charger->work); | |
556 | ||
557 | err_charger_init: | |
558 | kfree(charger); | |
559 | ||
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 | ||
576 | kfree(charger); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static struct platform_driver da903x_battery_driver = { | |
582 | .driver = { | |
583 | .name = "da903x-battery", | |
584 | .owner = THIS_MODULE, | |
585 | }, | |
586 | .probe = da9030_battery_probe, | |
587 | .remove = da9030_battery_remove, | |
588 | }; | |
589 | ||
590 | static int da903x_battery_init(void) | |
591 | { | |
592 | return platform_driver_register(&da903x_battery_driver); | |
593 | } | |
594 | ||
595 | static void da903x_battery_exit(void) | |
596 | { | |
597 | platform_driver_unregister(&da903x_battery_driver); | |
598 | } | |
599 | ||
600 | module_init(da903x_battery_init); | |
601 | module_exit(da903x_battery_exit); | |
602 | ||
603 | MODULE_DESCRIPTION("DA9030 battery charger driver"); | |
604 | MODULE_AUTHOR("Mike Rapoport, CompuLab"); | |
605 | MODULE_LICENSE("GPL"); |