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3961f7c3 MB |
1 | /* |
2 | * PMU driver for Wolfson Microelectronics wm831x PMICs | |
3 | * | |
4 | * Copyright 2009 Wolfson Microelectronics PLC. | |
5 | * | |
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. | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/err.h> | |
13 | #include <linux/platform_device.h> | |
14 | #include <linux/power_supply.h> | |
5a0e3ad6 | 15 | #include <linux/slab.h> |
3961f7c3 MB |
16 | |
17 | #include <linux/mfd/wm831x/core.h> | |
18 | #include <linux/mfd/wm831x/auxadc.h> | |
19 | #include <linux/mfd/wm831x/pmu.h> | |
20 | #include <linux/mfd/wm831x/pdata.h> | |
21 | ||
22 | struct wm831x_power { | |
23 | struct wm831x *wm831x; | |
24 | struct power_supply wall; | |
3961f7c3 MB |
25 | struct power_supply usb; |
26 | struct power_supply battery; | |
27 | }; | |
28 | ||
29 | static int wm831x_power_check_online(struct wm831x *wm831x, int supply, | |
30 | union power_supply_propval *val) | |
31 | { | |
32 | int ret; | |
33 | ||
34 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
35 | if (ret < 0) | |
36 | return ret; | |
37 | ||
38 | if (ret & supply) | |
39 | val->intval = 1; | |
40 | else | |
41 | val->intval = 0; | |
42 | ||
43 | return 0; | |
44 | } | |
45 | ||
46 | static int wm831x_power_read_voltage(struct wm831x *wm831x, | |
47 | enum wm831x_auxadc src, | |
48 | union power_supply_propval *val) | |
49 | { | |
50 | int ret; | |
51 | ||
52 | ret = wm831x_auxadc_read_uv(wm831x, src); | |
53 | if (ret >= 0) | |
54 | val->intval = ret; | |
55 | ||
56 | return ret; | |
57 | } | |
58 | ||
59 | /********************************************************************* | |
60 | * WALL Power | |
61 | *********************************************************************/ | |
62 | static int wm831x_wall_get_prop(struct power_supply *psy, | |
63 | enum power_supply_property psp, | |
64 | union power_supply_propval *val) | |
65 | { | |
66 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
67 | struct wm831x *wm831x = wm831x_power->wm831x; | |
68 | int ret = 0; | |
69 | ||
70 | switch (psp) { | |
71 | case POWER_SUPPLY_PROP_ONLINE: | |
72 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_WALL, val); | |
73 | break; | |
74 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
75 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_WALL, val); | |
76 | break; | |
77 | default: | |
78 | ret = -EINVAL; | |
79 | break; | |
80 | } | |
81 | ||
82 | return ret; | |
83 | } | |
84 | ||
85 | static enum power_supply_property wm831x_wall_props[] = { | |
86 | POWER_SUPPLY_PROP_ONLINE, | |
87 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
88 | }; | |
89 | ||
90 | /********************************************************************* | |
91 | * USB Power | |
92 | *********************************************************************/ | |
93 | static int wm831x_usb_get_prop(struct power_supply *psy, | |
94 | enum power_supply_property psp, | |
95 | union power_supply_propval *val) | |
96 | { | |
97 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
98 | struct wm831x *wm831x = wm831x_power->wm831x; | |
99 | int ret = 0; | |
100 | ||
101 | switch (psp) { | |
102 | case POWER_SUPPLY_PROP_ONLINE: | |
103 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_USB, val); | |
104 | break; | |
105 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
106 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_USB, val); | |
107 | break; | |
108 | default: | |
109 | ret = -EINVAL; | |
110 | break; | |
111 | } | |
112 | ||
113 | return ret; | |
114 | } | |
115 | ||
116 | static enum power_supply_property wm831x_usb_props[] = { | |
117 | POWER_SUPPLY_PROP_ONLINE, | |
118 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
119 | }; | |
120 | ||
121 | /********************************************************************* | |
122 | * Battery properties | |
123 | *********************************************************************/ | |
124 | ||
125 | struct chg_map { | |
126 | int val; | |
127 | int reg_val; | |
128 | }; | |
129 | ||
130 | static struct chg_map trickle_ilims[] = { | |
131 | { 50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
132 | { 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
133 | { 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
134 | { 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
135 | }; | |
136 | ||
137 | static struct chg_map vsels[] = { | |
138 | { 4050, 0 << WM831X_CHG_VSEL_SHIFT }, | |
139 | { 4100, 1 << WM831X_CHG_VSEL_SHIFT }, | |
140 | { 4150, 2 << WM831X_CHG_VSEL_SHIFT }, | |
141 | { 4200, 3 << WM831X_CHG_VSEL_SHIFT }, | |
142 | }; | |
143 | ||
144 | static struct chg_map fast_ilims[] = { | |
145 | { 0, 0 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
146 | { 50, 1 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
147 | { 100, 2 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
148 | { 150, 3 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
149 | { 200, 4 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
150 | { 250, 5 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
151 | { 300, 6 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
152 | { 350, 7 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
153 | { 400, 8 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
154 | { 450, 9 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
155 | { 500, 10 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
156 | { 600, 11 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
157 | { 700, 12 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
158 | { 800, 13 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
159 | { 900, 14 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
160 | { 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
161 | }; | |
162 | ||
163 | static struct chg_map eoc_iterms[] = { | |
164 | { 20, 0 << WM831X_CHG_ITERM_SHIFT }, | |
165 | { 30, 1 << WM831X_CHG_ITERM_SHIFT }, | |
166 | { 40, 2 << WM831X_CHG_ITERM_SHIFT }, | |
167 | { 50, 3 << WM831X_CHG_ITERM_SHIFT }, | |
168 | { 60, 4 << WM831X_CHG_ITERM_SHIFT }, | |
169 | { 70, 5 << WM831X_CHG_ITERM_SHIFT }, | |
170 | { 80, 6 << WM831X_CHG_ITERM_SHIFT }, | |
171 | { 90, 7 << WM831X_CHG_ITERM_SHIFT }, | |
172 | }; | |
173 | ||
174 | static struct chg_map chg_times[] = { | |
175 | { 60, 0 << WM831X_CHG_TIME_SHIFT }, | |
176 | { 90, 1 << WM831X_CHG_TIME_SHIFT }, | |
177 | { 120, 2 << WM831X_CHG_TIME_SHIFT }, | |
178 | { 150, 3 << WM831X_CHG_TIME_SHIFT }, | |
179 | { 180, 4 << WM831X_CHG_TIME_SHIFT }, | |
180 | { 210, 5 << WM831X_CHG_TIME_SHIFT }, | |
181 | { 240, 6 << WM831X_CHG_TIME_SHIFT }, | |
182 | { 270, 7 << WM831X_CHG_TIME_SHIFT }, | |
183 | { 300, 8 << WM831X_CHG_TIME_SHIFT }, | |
184 | { 330, 9 << WM831X_CHG_TIME_SHIFT }, | |
185 | { 360, 10 << WM831X_CHG_TIME_SHIFT }, | |
186 | { 390, 11 << WM831X_CHG_TIME_SHIFT }, | |
187 | { 420, 12 << WM831X_CHG_TIME_SHIFT }, | |
188 | { 450, 13 << WM831X_CHG_TIME_SHIFT }, | |
189 | { 480, 14 << WM831X_CHG_TIME_SHIFT }, | |
190 | { 510, 15 << WM831X_CHG_TIME_SHIFT }, | |
191 | }; | |
192 | ||
193 | static void wm831x_battey_apply_config(struct wm831x *wm831x, | |
194 | struct chg_map *map, int count, int val, | |
195 | int *reg, const char *name, | |
196 | const char *units) | |
197 | { | |
198 | int i; | |
199 | ||
200 | for (i = 0; i < count; i++) | |
201 | if (val == map[i].val) | |
202 | break; | |
203 | if (i == count) { | |
204 | dev_err(wm831x->dev, "Invalid %s %d%s\n", | |
205 | name, val, units); | |
206 | } else { | |
207 | *reg |= map[i].reg_val; | |
208 | dev_dbg(wm831x->dev, "Set %s of %d%s\n", name, val, units); | |
209 | } | |
210 | } | |
211 | ||
212 | static void wm831x_config_battery(struct wm831x *wm831x) | |
213 | { | |
214 | struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; | |
215 | struct wm831x_battery_pdata *pdata; | |
216 | int ret, reg1, reg2; | |
217 | ||
218 | if (!wm831x_pdata || !wm831x_pdata->battery) { | |
219 | dev_warn(wm831x->dev, | |
220 | "No battery charger configuration\n"); | |
221 | return; | |
222 | } | |
223 | ||
224 | pdata = wm831x_pdata->battery; | |
225 | ||
226 | reg1 = 0; | |
227 | reg2 = 0; | |
228 | ||
229 | if (!pdata->enable) { | |
230 | dev_info(wm831x->dev, "Battery charger disabled\n"); | |
231 | return; | |
232 | } | |
233 | ||
234 | reg1 |= WM831X_CHG_ENA; | |
235 | if (pdata->off_mask) | |
236 | reg2 |= WM831X_CHG_OFF_MSK; | |
237 | if (pdata->fast_enable) | |
238 | reg1 |= WM831X_CHG_FAST; | |
239 | ||
240 | wm831x_battey_apply_config(wm831x, trickle_ilims, | |
241 | ARRAY_SIZE(trickle_ilims), | |
242 | pdata->trickle_ilim, ®2, | |
243 | "trickle charge current limit", "mA"); | |
244 | ||
245 | wm831x_battey_apply_config(wm831x, vsels, ARRAY_SIZE(vsels), | |
246 | pdata->vsel, ®2, | |
247 | "target voltage", "mV"); | |
248 | ||
249 | wm831x_battey_apply_config(wm831x, fast_ilims, ARRAY_SIZE(fast_ilims), | |
250 | pdata->fast_ilim, ®2, | |
251 | "fast charge current limit", "mA"); | |
252 | ||
253 | wm831x_battey_apply_config(wm831x, eoc_iterms, ARRAY_SIZE(eoc_iterms), | |
254 | pdata->eoc_iterm, ®1, | |
255 | "end of charge current threshold", "mA"); | |
256 | ||
257 | wm831x_battey_apply_config(wm831x, chg_times, ARRAY_SIZE(chg_times), | |
258 | pdata->timeout, ®2, | |
259 | "charger timeout", "min"); | |
260 | ||
261 | ret = wm831x_reg_unlock(wm831x); | |
262 | if (ret != 0) { | |
263 | dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret); | |
264 | return; | |
265 | } | |
266 | ||
267 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1, | |
268 | WM831X_CHG_ENA_MASK | | |
269 | WM831X_CHG_FAST_MASK | | |
270 | WM831X_CHG_ITERM_MASK | | |
271 | WM831X_CHG_ITERM_MASK, | |
272 | reg1); | |
273 | if (ret != 0) | |
274 | dev_err(wm831x->dev, "Failed to set charger control 1: %d\n", | |
275 | ret); | |
276 | ||
277 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_2, | |
278 | WM831X_CHG_OFF_MSK | | |
279 | WM831X_CHG_TIME_MASK | | |
280 | WM831X_CHG_FAST_ILIM_MASK | | |
281 | WM831X_CHG_TRKL_ILIM_MASK | | |
282 | WM831X_CHG_VSEL_MASK, | |
283 | reg2); | |
284 | if (ret != 0) | |
285 | dev_err(wm831x->dev, "Failed to set charger control 2: %d\n", | |
286 | ret); | |
287 | ||
288 | wm831x_reg_lock(wm831x); | |
289 | } | |
290 | ||
291 | static int wm831x_bat_check_status(struct wm831x *wm831x, int *status) | |
292 | { | |
293 | int ret; | |
294 | ||
295 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
296 | if (ret < 0) | |
297 | return ret; | |
298 | ||
299 | if (ret & WM831X_PWR_SRC_BATT) { | |
300 | *status = POWER_SUPPLY_STATUS_DISCHARGING; | |
301 | return 0; | |
302 | } | |
303 | ||
304 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
305 | if (ret < 0) | |
306 | return ret; | |
307 | ||
308 | switch (ret & WM831X_CHG_STATE_MASK) { | |
309 | case WM831X_CHG_STATE_OFF: | |
310 | *status = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
311 | break; | |
312 | case WM831X_CHG_STATE_TRICKLE: | |
313 | case WM831X_CHG_STATE_FAST: | |
314 | *status = POWER_SUPPLY_STATUS_CHARGING; | |
315 | break; | |
316 | ||
317 | default: | |
318 | *status = POWER_SUPPLY_STATUS_UNKNOWN; | |
319 | break; | |
320 | } | |
321 | ||
322 | return 0; | |
323 | } | |
324 | ||
325 | static int wm831x_bat_check_type(struct wm831x *wm831x, int *type) | |
326 | { | |
327 | int ret; | |
328 | ||
329 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
330 | if (ret < 0) | |
331 | return ret; | |
332 | ||
333 | switch (ret & WM831X_CHG_STATE_MASK) { | |
334 | case WM831X_CHG_STATE_TRICKLE: | |
335 | case WM831X_CHG_STATE_TRICKLE_OT: | |
336 | *type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; | |
337 | break; | |
338 | case WM831X_CHG_STATE_FAST: | |
339 | case WM831X_CHG_STATE_FAST_OT: | |
340 | *type = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
341 | break; | |
342 | default: | |
343 | *type = POWER_SUPPLY_CHARGE_TYPE_NONE; | |
344 | break; | |
345 | } | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
350 | static int wm831x_bat_check_health(struct wm831x *wm831x, int *health) | |
351 | { | |
352 | int ret; | |
353 | ||
354 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
355 | if (ret < 0) | |
356 | return ret; | |
357 | ||
358 | if (ret & WM831X_BATT_HOT_STS) { | |
359 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
360 | return 0; | |
361 | } | |
362 | ||
363 | if (ret & WM831X_BATT_COLD_STS) { | |
364 | *health = POWER_SUPPLY_HEALTH_COLD; | |
365 | return 0; | |
366 | } | |
367 | ||
368 | if (ret & WM831X_BATT_OV_STS) { | |
369 | *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | switch (ret & WM831X_CHG_STATE_MASK) { | |
374 | case WM831X_CHG_STATE_TRICKLE_OT: | |
375 | case WM831X_CHG_STATE_FAST_OT: | |
376 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
377 | break; | |
378 | case WM831X_CHG_STATE_DEFECTIVE: | |
379 | *health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
380 | break; | |
381 | default: | |
382 | *health = POWER_SUPPLY_HEALTH_GOOD; | |
383 | break; | |
384 | } | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | static int wm831x_bat_get_prop(struct power_supply *psy, | |
390 | enum power_supply_property psp, | |
391 | union power_supply_propval *val) | |
392 | { | |
393 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
394 | struct wm831x *wm831x = wm831x_power->wm831x; | |
395 | int ret = 0; | |
396 | ||
397 | switch (psp) { | |
398 | case POWER_SUPPLY_PROP_STATUS: | |
399 | ret = wm831x_bat_check_status(wm831x, &val->intval); | |
400 | break; | |
401 | case POWER_SUPPLY_PROP_ONLINE: | |
402 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_SRC_BATT, | |
403 | val); | |
404 | break; | |
405 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
406 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BATT, val); | |
407 | break; | |
408 | case POWER_SUPPLY_PROP_HEALTH: | |
409 | ret = wm831x_bat_check_health(wm831x, &val->intval); | |
410 | break; | |
411 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
412 | ret = wm831x_bat_check_type(wm831x, &val->intval); | |
413 | break; | |
414 | default: | |
415 | ret = -EINVAL; | |
416 | break; | |
417 | } | |
418 | ||
419 | return ret; | |
420 | } | |
421 | ||
422 | static enum power_supply_property wm831x_bat_props[] = { | |
423 | POWER_SUPPLY_PROP_STATUS, | |
424 | POWER_SUPPLY_PROP_ONLINE, | |
425 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
426 | POWER_SUPPLY_PROP_HEALTH, | |
427 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
428 | }; | |
429 | ||
430 | static const char *wm831x_bat_irqs[] = { | |
431 | "BATT HOT", | |
432 | "BATT COLD", | |
433 | "BATT FAIL", | |
434 | "OV", | |
435 | "END", | |
436 | "TO", | |
437 | "MODE", | |
438 | "START", | |
439 | }; | |
440 | ||
441 | static irqreturn_t wm831x_bat_irq(int irq, void *data) | |
442 | { | |
443 | struct wm831x_power *wm831x_power = data; | |
444 | struct wm831x *wm831x = wm831x_power->wm831x; | |
445 | ||
446 | dev_dbg(wm831x->dev, "Battery status changed: %d\n", irq); | |
447 | ||
448 | /* The battery charger is autonomous so we don't need to do | |
449 | * anything except kick user space */ | |
450 | power_supply_changed(&wm831x_power->battery); | |
451 | ||
452 | return IRQ_HANDLED; | |
453 | } | |
454 | ||
455 | ||
3961f7c3 MB |
456 | /********************************************************************* |
457 | * Initialisation | |
458 | *********************************************************************/ | |
459 | ||
460 | static irqreturn_t wm831x_syslo_irq(int irq, void *data) | |
461 | { | |
462 | struct wm831x_power *wm831x_power = data; | |
463 | struct wm831x *wm831x = wm831x_power->wm831x; | |
464 | ||
465 | /* Not much we can actually *do* but tell people for | |
466 | * posterity, we're probably about to run out of power. */ | |
467 | dev_crit(wm831x->dev, "SYSVDD under voltage\n"); | |
468 | ||
469 | return IRQ_HANDLED; | |
470 | } | |
471 | ||
472 | static irqreturn_t wm831x_pwr_src_irq(int irq, void *data) | |
473 | { | |
474 | struct wm831x_power *wm831x_power = data; | |
475 | struct wm831x *wm831x = wm831x_power->wm831x; | |
476 | ||
477 | dev_dbg(wm831x->dev, "Power source changed\n"); | |
478 | ||
c26964ea | 479 | /* Just notify for everything - little harm in overnotifying. */ |
3961f7c3 MB |
480 | power_supply_changed(&wm831x_power->battery); |
481 | power_supply_changed(&wm831x_power->usb); | |
482 | power_supply_changed(&wm831x_power->wall); | |
483 | ||
484 | return IRQ_HANDLED; | |
485 | } | |
486 | ||
487 | static __devinit int wm831x_power_probe(struct platform_device *pdev) | |
488 | { | |
489 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
490 | struct wm831x_power *power; | |
491 | struct power_supply *usb; | |
492 | struct power_supply *battery; | |
493 | struct power_supply *wall; | |
3961f7c3 MB |
494 | int ret, irq, i; |
495 | ||
496 | power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL); | |
497 | if (power == NULL) | |
498 | return -ENOMEM; | |
499 | ||
500 | power->wm831x = wm831x; | |
501 | platform_set_drvdata(pdev, power); | |
502 | ||
503 | usb = &power->usb; | |
504 | battery = &power->battery; | |
505 | wall = &power->wall; | |
3961f7c3 MB |
506 | |
507 | /* We ignore configuration failures since we can still read back | |
c26964ea | 508 | * the status without enabling the charger. |
3961f7c3 MB |
509 | */ |
510 | wm831x_config_battery(wm831x); | |
3961f7c3 MB |
511 | |
512 | wall->name = "wm831x-wall"; | |
513 | wall->type = POWER_SUPPLY_TYPE_MAINS; | |
514 | wall->properties = wm831x_wall_props; | |
515 | wall->num_properties = ARRAY_SIZE(wm831x_wall_props); | |
516 | wall->get_property = wm831x_wall_get_prop; | |
517 | ret = power_supply_register(&pdev->dev, wall); | |
518 | if (ret) | |
519 | goto err_kmalloc; | |
520 | ||
521 | battery->name = "wm831x-battery"; | |
522 | battery->properties = wm831x_bat_props; | |
523 | battery->num_properties = ARRAY_SIZE(wm831x_bat_props); | |
524 | battery->get_property = wm831x_bat_get_prop; | |
525 | battery->use_for_apm = 1; | |
526 | ret = power_supply_register(&pdev->dev, battery); | |
527 | if (ret) | |
528 | goto err_wall; | |
529 | ||
530 | usb->name = "wm831x-usb", | |
531 | usb->type = POWER_SUPPLY_TYPE_USB; | |
532 | usb->properties = wm831x_usb_props; | |
533 | usb->num_properties = ARRAY_SIZE(wm831x_usb_props); | |
534 | usb->get_property = wm831x_usb_get_prop; | |
535 | ret = power_supply_register(&pdev->dev, usb); | |
536 | if (ret) | |
537 | goto err_battery; | |
538 | ||
3961f7c3 MB |
539 | irq = platform_get_irq_byname(pdev, "SYSLO"); |
540 | ret = wm831x_request_irq(wm831x, irq, wm831x_syslo_irq, | |
541 | IRQF_TRIGGER_RISING, "SYSLO", | |
542 | power); | |
543 | if (ret != 0) { | |
544 | dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n", | |
545 | irq, ret); | |
c26964ea | 546 | goto err_usb; |
3961f7c3 MB |
547 | } |
548 | ||
549 | irq = platform_get_irq_byname(pdev, "PWR SRC"); | |
550 | ret = wm831x_request_irq(wm831x, irq, wm831x_pwr_src_irq, | |
551 | IRQF_TRIGGER_RISING, "Power source", | |
552 | power); | |
553 | if (ret != 0) { | |
554 | dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n", | |
555 | irq, ret); | |
556 | goto err_syslo; | |
557 | } | |
558 | ||
559 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
560 | irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]); | |
561 | ret = wm831x_request_irq(wm831x, irq, wm831x_bat_irq, | |
562 | IRQF_TRIGGER_RISING, | |
563 | wm831x_bat_irqs[i], | |
564 | power); | |
565 | if (ret != 0) { | |
566 | dev_err(&pdev->dev, | |
567 | "Failed to request %s IRQ %d: %d\n", | |
568 | wm831x_bat_irqs[i], irq, ret); | |
569 | goto err_bat_irq; | |
570 | } | |
571 | } | |
572 | ||
573 | return ret; | |
574 | ||
575 | err_bat_irq: | |
576 | for (; i >= 0; i--) { | |
577 | irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]); | |
578 | wm831x_free_irq(wm831x, irq, power); | |
579 | } | |
580 | irq = platform_get_irq_byname(pdev, "PWR SRC"); | |
581 | wm831x_free_irq(wm831x, irq, power); | |
582 | err_syslo: | |
583 | irq = platform_get_irq_byname(pdev, "SYSLO"); | |
584 | wm831x_free_irq(wm831x, irq, power); | |
3961f7c3 MB |
585 | err_usb: |
586 | power_supply_unregister(usb); | |
587 | err_battery: | |
588 | power_supply_unregister(battery); | |
589 | err_wall: | |
590 | power_supply_unregister(wall); | |
591 | err_kmalloc: | |
592 | kfree(power); | |
593 | return ret; | |
594 | } | |
595 | ||
596 | static __devexit int wm831x_power_remove(struct platform_device *pdev) | |
597 | { | |
598 | struct wm831x_power *wm831x_power = platform_get_drvdata(pdev); | |
599 | struct wm831x *wm831x = wm831x_power->wm831x; | |
600 | int irq, i; | |
601 | ||
602 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
603 | irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]); | |
604 | wm831x_free_irq(wm831x, irq, wm831x_power); | |
605 | } | |
606 | ||
607 | irq = platform_get_irq_byname(pdev, "PWR SRC"); | |
608 | wm831x_free_irq(wm831x, irq, wm831x_power); | |
609 | ||
610 | irq = platform_get_irq_byname(pdev, "SYSLO"); | |
611 | wm831x_free_irq(wm831x, irq, wm831x_power); | |
612 | ||
3961f7c3 MB |
613 | power_supply_unregister(&wm831x_power->battery); |
614 | power_supply_unregister(&wm831x_power->wall); | |
615 | power_supply_unregister(&wm831x_power->usb); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | static struct platform_driver wm831x_power_driver = { | |
620 | .probe = wm831x_power_probe, | |
621 | .remove = __devexit_p(wm831x_power_remove), | |
622 | .driver = { | |
623 | .name = "wm831x-power", | |
624 | }, | |
625 | }; | |
626 | ||
627 | static int __init wm831x_power_init(void) | |
628 | { | |
629 | return platform_driver_register(&wm831x_power_driver); | |
630 | } | |
631 | module_init(wm831x_power_init); | |
632 | ||
633 | static void __exit wm831x_power_exit(void) | |
634 | { | |
635 | platform_driver_unregister(&wm831x_power_driver); | |
636 | } | |
637 | module_exit(wm831x_power_exit); | |
638 | ||
639 | MODULE_DESCRIPTION("Power supply driver for WM831x PMICs"); | |
640 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
641 | MODULE_LICENSE("GPL"); | |
642 | MODULE_ALIAS("platform:wm831x-power"); |