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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; | |
297d716f KK |
24 | struct power_supply *wall; |
25 | struct power_supply *usb; | |
26 | struct power_supply *battery; | |
27 | struct power_supply_desc wall_desc; | |
28 | struct power_supply_desc usb_desc; | |
29 | struct power_supply_desc battery_desc; | |
ccf8fa2d MB |
30 | char wall_name[20]; |
31 | char usb_name[20]; | |
32 | char battery_name[20]; | |
35c3ae5e | 33 | bool have_battery; |
3961f7c3 MB |
34 | }; |
35 | ||
36 | static int wm831x_power_check_online(struct wm831x *wm831x, int supply, | |
37 | union power_supply_propval *val) | |
38 | { | |
39 | int ret; | |
40 | ||
41 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
42 | if (ret < 0) | |
43 | return ret; | |
44 | ||
45 | if (ret & supply) | |
46 | val->intval = 1; | |
47 | else | |
48 | val->intval = 0; | |
49 | ||
50 | return 0; | |
51 | } | |
52 | ||
53 | static int wm831x_power_read_voltage(struct wm831x *wm831x, | |
54 | enum wm831x_auxadc src, | |
55 | union power_supply_propval *val) | |
56 | { | |
57 | int ret; | |
58 | ||
59 | ret = wm831x_auxadc_read_uv(wm831x, src); | |
60 | if (ret >= 0) | |
61 | val->intval = ret; | |
62 | ||
63 | return ret; | |
64 | } | |
65 | ||
66 | /********************************************************************* | |
67 | * WALL Power | |
68 | *********************************************************************/ | |
69 | static int wm831x_wall_get_prop(struct power_supply *psy, | |
70 | enum power_supply_property psp, | |
71 | union power_supply_propval *val) | |
72 | { | |
297d716f | 73 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev.parent); |
3961f7c3 MB |
74 | struct wm831x *wm831x = wm831x_power->wm831x; |
75 | int ret = 0; | |
76 | ||
77 | switch (psp) { | |
78 | case POWER_SUPPLY_PROP_ONLINE: | |
79 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_WALL, val); | |
80 | break; | |
81 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
82 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_WALL, val); | |
83 | break; | |
84 | default: | |
85 | ret = -EINVAL; | |
86 | break; | |
87 | } | |
88 | ||
89 | return ret; | |
90 | } | |
91 | ||
92 | static enum power_supply_property wm831x_wall_props[] = { | |
93 | POWER_SUPPLY_PROP_ONLINE, | |
94 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
95 | }; | |
96 | ||
97 | /********************************************************************* | |
98 | * USB Power | |
99 | *********************************************************************/ | |
100 | static int wm831x_usb_get_prop(struct power_supply *psy, | |
101 | enum power_supply_property psp, | |
102 | union power_supply_propval *val) | |
103 | { | |
297d716f | 104 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev.parent); |
3961f7c3 MB |
105 | struct wm831x *wm831x = wm831x_power->wm831x; |
106 | int ret = 0; | |
107 | ||
108 | switch (psp) { | |
109 | case POWER_SUPPLY_PROP_ONLINE: | |
110 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_USB, val); | |
111 | break; | |
112 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
113 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_USB, val); | |
114 | break; | |
115 | default: | |
116 | ret = -EINVAL; | |
117 | break; | |
118 | } | |
119 | ||
120 | return ret; | |
121 | } | |
122 | ||
123 | static enum power_supply_property wm831x_usb_props[] = { | |
124 | POWER_SUPPLY_PROP_ONLINE, | |
125 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
126 | }; | |
127 | ||
128 | /********************************************************************* | |
129 | * Battery properties | |
130 | *********************************************************************/ | |
131 | ||
132 | struct chg_map { | |
133 | int val; | |
134 | int reg_val; | |
135 | }; | |
136 | ||
137 | static struct chg_map trickle_ilims[] = { | |
138 | { 50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
139 | { 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
140 | { 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
141 | { 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
142 | }; | |
143 | ||
144 | static struct chg_map vsels[] = { | |
145 | { 4050, 0 << WM831X_CHG_VSEL_SHIFT }, | |
146 | { 4100, 1 << WM831X_CHG_VSEL_SHIFT }, | |
147 | { 4150, 2 << WM831X_CHG_VSEL_SHIFT }, | |
148 | { 4200, 3 << WM831X_CHG_VSEL_SHIFT }, | |
149 | }; | |
150 | ||
151 | static struct chg_map fast_ilims[] = { | |
152 | { 0, 0 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
153 | { 50, 1 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
154 | { 100, 2 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
155 | { 150, 3 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
156 | { 200, 4 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
157 | { 250, 5 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
158 | { 300, 6 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
159 | { 350, 7 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
160 | { 400, 8 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
161 | { 450, 9 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
162 | { 500, 10 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
163 | { 600, 11 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
164 | { 700, 12 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
165 | { 800, 13 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
166 | { 900, 14 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
167 | { 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
168 | }; | |
169 | ||
170 | static struct chg_map eoc_iterms[] = { | |
171 | { 20, 0 << WM831X_CHG_ITERM_SHIFT }, | |
172 | { 30, 1 << WM831X_CHG_ITERM_SHIFT }, | |
173 | { 40, 2 << WM831X_CHG_ITERM_SHIFT }, | |
174 | { 50, 3 << WM831X_CHG_ITERM_SHIFT }, | |
175 | { 60, 4 << WM831X_CHG_ITERM_SHIFT }, | |
176 | { 70, 5 << WM831X_CHG_ITERM_SHIFT }, | |
177 | { 80, 6 << WM831X_CHG_ITERM_SHIFT }, | |
178 | { 90, 7 << WM831X_CHG_ITERM_SHIFT }, | |
179 | }; | |
180 | ||
181 | static struct chg_map chg_times[] = { | |
182 | { 60, 0 << WM831X_CHG_TIME_SHIFT }, | |
183 | { 90, 1 << WM831X_CHG_TIME_SHIFT }, | |
184 | { 120, 2 << WM831X_CHG_TIME_SHIFT }, | |
185 | { 150, 3 << WM831X_CHG_TIME_SHIFT }, | |
186 | { 180, 4 << WM831X_CHG_TIME_SHIFT }, | |
187 | { 210, 5 << WM831X_CHG_TIME_SHIFT }, | |
188 | { 240, 6 << WM831X_CHG_TIME_SHIFT }, | |
189 | { 270, 7 << WM831X_CHG_TIME_SHIFT }, | |
190 | { 300, 8 << WM831X_CHG_TIME_SHIFT }, | |
191 | { 330, 9 << WM831X_CHG_TIME_SHIFT }, | |
192 | { 360, 10 << WM831X_CHG_TIME_SHIFT }, | |
193 | { 390, 11 << WM831X_CHG_TIME_SHIFT }, | |
194 | { 420, 12 << WM831X_CHG_TIME_SHIFT }, | |
195 | { 450, 13 << WM831X_CHG_TIME_SHIFT }, | |
196 | { 480, 14 << WM831X_CHG_TIME_SHIFT }, | |
197 | { 510, 15 << WM831X_CHG_TIME_SHIFT }, | |
198 | }; | |
199 | ||
200 | static void wm831x_battey_apply_config(struct wm831x *wm831x, | |
201 | struct chg_map *map, int count, int val, | |
202 | int *reg, const char *name, | |
203 | const char *units) | |
204 | { | |
205 | int i; | |
206 | ||
207 | for (i = 0; i < count; i++) | |
208 | if (val == map[i].val) | |
209 | break; | |
210 | if (i == count) { | |
211 | dev_err(wm831x->dev, "Invalid %s %d%s\n", | |
212 | name, val, units); | |
213 | } else { | |
214 | *reg |= map[i].reg_val; | |
215 | dev_dbg(wm831x->dev, "Set %s of %d%s\n", name, val, units); | |
216 | } | |
217 | } | |
218 | ||
219 | static void wm831x_config_battery(struct wm831x *wm831x) | |
220 | { | |
221 | struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; | |
222 | struct wm831x_battery_pdata *pdata; | |
223 | int ret, reg1, reg2; | |
224 | ||
225 | if (!wm831x_pdata || !wm831x_pdata->battery) { | |
226 | dev_warn(wm831x->dev, | |
227 | "No battery charger configuration\n"); | |
228 | return; | |
229 | } | |
230 | ||
231 | pdata = wm831x_pdata->battery; | |
232 | ||
233 | reg1 = 0; | |
234 | reg2 = 0; | |
235 | ||
236 | if (!pdata->enable) { | |
237 | dev_info(wm831x->dev, "Battery charger disabled\n"); | |
238 | return; | |
239 | } | |
240 | ||
241 | reg1 |= WM831X_CHG_ENA; | |
242 | if (pdata->off_mask) | |
243 | reg2 |= WM831X_CHG_OFF_MSK; | |
244 | if (pdata->fast_enable) | |
245 | reg1 |= WM831X_CHG_FAST; | |
246 | ||
247 | wm831x_battey_apply_config(wm831x, trickle_ilims, | |
248 | ARRAY_SIZE(trickle_ilims), | |
249 | pdata->trickle_ilim, ®2, | |
250 | "trickle charge current limit", "mA"); | |
251 | ||
252 | wm831x_battey_apply_config(wm831x, vsels, ARRAY_SIZE(vsels), | |
253 | pdata->vsel, ®2, | |
254 | "target voltage", "mV"); | |
255 | ||
256 | wm831x_battey_apply_config(wm831x, fast_ilims, ARRAY_SIZE(fast_ilims), | |
257 | pdata->fast_ilim, ®2, | |
258 | "fast charge current limit", "mA"); | |
259 | ||
260 | wm831x_battey_apply_config(wm831x, eoc_iterms, ARRAY_SIZE(eoc_iterms), | |
261 | pdata->eoc_iterm, ®1, | |
262 | "end of charge current threshold", "mA"); | |
263 | ||
264 | wm831x_battey_apply_config(wm831x, chg_times, ARRAY_SIZE(chg_times), | |
265 | pdata->timeout, ®2, | |
266 | "charger timeout", "min"); | |
267 | ||
268 | ret = wm831x_reg_unlock(wm831x); | |
269 | if (ret != 0) { | |
270 | dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret); | |
271 | return; | |
272 | } | |
273 | ||
274 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1, | |
275 | WM831X_CHG_ENA_MASK | | |
276 | WM831X_CHG_FAST_MASK | | |
3961f7c3 MB |
277 | WM831X_CHG_ITERM_MASK, |
278 | reg1); | |
279 | if (ret != 0) | |
280 | dev_err(wm831x->dev, "Failed to set charger control 1: %d\n", | |
281 | ret); | |
282 | ||
283 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_2, | |
284 | WM831X_CHG_OFF_MSK | | |
285 | WM831X_CHG_TIME_MASK | | |
286 | WM831X_CHG_FAST_ILIM_MASK | | |
287 | WM831X_CHG_TRKL_ILIM_MASK | | |
288 | WM831X_CHG_VSEL_MASK, | |
289 | reg2); | |
290 | if (ret != 0) | |
291 | dev_err(wm831x->dev, "Failed to set charger control 2: %d\n", | |
292 | ret); | |
293 | ||
294 | wm831x_reg_lock(wm831x); | |
295 | } | |
296 | ||
297 | static int wm831x_bat_check_status(struct wm831x *wm831x, int *status) | |
298 | { | |
299 | int ret; | |
300 | ||
301 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
302 | if (ret < 0) | |
303 | return ret; | |
304 | ||
305 | if (ret & WM831X_PWR_SRC_BATT) { | |
306 | *status = POWER_SUPPLY_STATUS_DISCHARGING; | |
307 | return 0; | |
308 | } | |
309 | ||
310 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
311 | if (ret < 0) | |
312 | return ret; | |
313 | ||
314 | switch (ret & WM831X_CHG_STATE_MASK) { | |
315 | case WM831X_CHG_STATE_OFF: | |
316 | *status = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
317 | break; | |
318 | case WM831X_CHG_STATE_TRICKLE: | |
319 | case WM831X_CHG_STATE_FAST: | |
320 | *status = POWER_SUPPLY_STATUS_CHARGING; | |
321 | break; | |
322 | ||
323 | default: | |
324 | *status = POWER_SUPPLY_STATUS_UNKNOWN; | |
325 | break; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | static int wm831x_bat_check_type(struct wm831x *wm831x, int *type) | |
332 | { | |
333 | int ret; | |
334 | ||
335 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
339 | switch (ret & WM831X_CHG_STATE_MASK) { | |
340 | case WM831X_CHG_STATE_TRICKLE: | |
341 | case WM831X_CHG_STATE_TRICKLE_OT: | |
342 | *type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; | |
343 | break; | |
344 | case WM831X_CHG_STATE_FAST: | |
345 | case WM831X_CHG_STATE_FAST_OT: | |
346 | *type = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
347 | break; | |
348 | default: | |
349 | *type = POWER_SUPPLY_CHARGE_TYPE_NONE; | |
350 | break; | |
351 | } | |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
356 | static int wm831x_bat_check_health(struct wm831x *wm831x, int *health) | |
357 | { | |
358 | int ret; | |
359 | ||
360 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
361 | if (ret < 0) | |
362 | return ret; | |
363 | ||
364 | if (ret & WM831X_BATT_HOT_STS) { | |
365 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
366 | return 0; | |
367 | } | |
368 | ||
369 | if (ret & WM831X_BATT_COLD_STS) { | |
370 | *health = POWER_SUPPLY_HEALTH_COLD; | |
371 | return 0; | |
372 | } | |
373 | ||
374 | if (ret & WM831X_BATT_OV_STS) { | |
375 | *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
376 | return 0; | |
377 | } | |
378 | ||
379 | switch (ret & WM831X_CHG_STATE_MASK) { | |
380 | case WM831X_CHG_STATE_TRICKLE_OT: | |
381 | case WM831X_CHG_STATE_FAST_OT: | |
382 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
383 | break; | |
384 | case WM831X_CHG_STATE_DEFECTIVE: | |
385 | *health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
386 | break; | |
387 | default: | |
388 | *health = POWER_SUPPLY_HEALTH_GOOD; | |
389 | break; | |
390 | } | |
391 | ||
392 | return 0; | |
393 | } | |
394 | ||
395 | static int wm831x_bat_get_prop(struct power_supply *psy, | |
396 | enum power_supply_property psp, | |
397 | union power_supply_propval *val) | |
398 | { | |
297d716f | 399 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev.parent); |
3961f7c3 MB |
400 | struct wm831x *wm831x = wm831x_power->wm831x; |
401 | int ret = 0; | |
402 | ||
403 | switch (psp) { | |
404 | case POWER_SUPPLY_PROP_STATUS: | |
405 | ret = wm831x_bat_check_status(wm831x, &val->intval); | |
406 | break; | |
407 | case POWER_SUPPLY_PROP_ONLINE: | |
408 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_SRC_BATT, | |
409 | val); | |
410 | break; | |
411 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
412 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BATT, val); | |
413 | break; | |
414 | case POWER_SUPPLY_PROP_HEALTH: | |
415 | ret = wm831x_bat_check_health(wm831x, &val->intval); | |
416 | break; | |
417 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
418 | ret = wm831x_bat_check_type(wm831x, &val->intval); | |
419 | break; | |
420 | default: | |
421 | ret = -EINVAL; | |
422 | break; | |
423 | } | |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
428 | static enum power_supply_property wm831x_bat_props[] = { | |
429 | POWER_SUPPLY_PROP_STATUS, | |
430 | POWER_SUPPLY_PROP_ONLINE, | |
431 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
432 | POWER_SUPPLY_PROP_HEALTH, | |
433 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
434 | }; | |
435 | ||
436 | static const char *wm831x_bat_irqs[] = { | |
437 | "BATT HOT", | |
438 | "BATT COLD", | |
439 | "BATT FAIL", | |
440 | "OV", | |
441 | "END", | |
442 | "TO", | |
443 | "MODE", | |
444 | "START", | |
445 | }; | |
446 | ||
447 | static irqreturn_t wm831x_bat_irq(int irq, void *data) | |
448 | { | |
449 | struct wm831x_power *wm831x_power = data; | |
450 | struct wm831x *wm831x = wm831x_power->wm831x; | |
451 | ||
452 | dev_dbg(wm831x->dev, "Battery status changed: %d\n", irq); | |
453 | ||
454 | /* The battery charger is autonomous so we don't need to do | |
455 | * anything except kick user space */ | |
35c3ae5e | 456 | if (wm831x_power->have_battery) |
297d716f | 457 | power_supply_changed(wm831x_power->battery); |
3961f7c3 MB |
458 | |
459 | return IRQ_HANDLED; | |
460 | } | |
461 | ||
462 | ||
3961f7c3 MB |
463 | /********************************************************************* |
464 | * Initialisation | |
465 | *********************************************************************/ | |
466 | ||
467 | static irqreturn_t wm831x_syslo_irq(int irq, void *data) | |
468 | { | |
469 | struct wm831x_power *wm831x_power = data; | |
470 | struct wm831x *wm831x = wm831x_power->wm831x; | |
471 | ||
472 | /* Not much we can actually *do* but tell people for | |
473 | * posterity, we're probably about to run out of power. */ | |
474 | dev_crit(wm831x->dev, "SYSVDD under voltage\n"); | |
475 | ||
476 | return IRQ_HANDLED; | |
477 | } | |
478 | ||
479 | static irqreturn_t wm831x_pwr_src_irq(int irq, void *data) | |
480 | { | |
481 | struct wm831x_power *wm831x_power = data; | |
482 | struct wm831x *wm831x = wm831x_power->wm831x; | |
483 | ||
484 | dev_dbg(wm831x->dev, "Power source changed\n"); | |
485 | ||
c26964ea | 486 | /* Just notify for everything - little harm in overnotifying. */ |
35c3ae5e | 487 | if (wm831x_power->have_battery) |
297d716f KK |
488 | power_supply_changed(wm831x_power->battery); |
489 | power_supply_changed(wm831x_power->usb); | |
490 | power_supply_changed(wm831x_power->wall); | |
3961f7c3 MB |
491 | |
492 | return IRQ_HANDLED; | |
493 | } | |
494 | ||
c8afa640 | 495 | static int wm831x_power_probe(struct platform_device *pdev) |
3961f7c3 MB |
496 | { |
497 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
ccf8fa2d | 498 | struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; |
3961f7c3 | 499 | struct wm831x_power *power; |
3961f7c3 MB |
500 | int ret, irq, i; |
501 | ||
c01576c8 MB |
502 | power = devm_kzalloc(&pdev->dev, sizeof(struct wm831x_power), |
503 | GFP_KERNEL); | |
3961f7c3 MB |
504 | if (power == NULL) |
505 | return -ENOMEM; | |
506 | ||
507 | power->wm831x = wm831x; | |
508 | platform_set_drvdata(pdev, power); | |
509 | ||
ccf8fa2d MB |
510 | if (wm831x_pdata && wm831x_pdata->wm831x_num) { |
511 | snprintf(power->wall_name, sizeof(power->wall_name), | |
512 | "wm831x-wall.%d", wm831x_pdata->wm831x_num); | |
513 | snprintf(power->battery_name, sizeof(power->wall_name), | |
514 | "wm831x-battery.%d", wm831x_pdata->wm831x_num); | |
515 | snprintf(power->usb_name, sizeof(power->wall_name), | |
516 | "wm831x-usb.%d", wm831x_pdata->wm831x_num); | |
517 | } else { | |
518 | snprintf(power->wall_name, sizeof(power->wall_name), | |
519 | "wm831x-wall"); | |
520 | snprintf(power->battery_name, sizeof(power->wall_name), | |
521 | "wm831x-battery"); | |
522 | snprintf(power->usb_name, sizeof(power->wall_name), | |
523 | "wm831x-usb"); | |
524 | } | |
525 | ||
3961f7c3 | 526 | /* We ignore configuration failures since we can still read back |
c26964ea | 527 | * the status without enabling the charger. |
3961f7c3 MB |
528 | */ |
529 | wm831x_config_battery(wm831x); | |
3961f7c3 | 530 | |
297d716f KK |
531 | power->wall_desc.name = power->wall_name; |
532 | power->wall_desc.type = POWER_SUPPLY_TYPE_MAINS; | |
533 | power->wall_desc.properties = wm831x_wall_props; | |
534 | power->wall_desc.num_properties = ARRAY_SIZE(wm831x_wall_props); | |
535 | power->wall_desc.get_property = wm831x_wall_get_prop; | |
536 | power->wall = power_supply_register(&pdev->dev, &power->wall_desc, | |
537 | NULL); | |
538 | if (IS_ERR(power->wall)) { | |
539 | ret = PTR_ERR(power->wall); | |
c01576c8 | 540 | goto err; |
297d716f | 541 | } |
3961f7c3 | 542 | |
297d716f KK |
543 | power->usb_desc.name = power->usb_name, |
544 | power->usb_desc.type = POWER_SUPPLY_TYPE_USB; | |
545 | power->usb_desc.properties = wm831x_usb_props; | |
546 | power->usb_desc.num_properties = ARRAY_SIZE(wm831x_usb_props); | |
547 | power->usb_desc.get_property = wm831x_usb_get_prop; | |
548 | power->usb = power_supply_register(&pdev->dev, &power->usb_desc, NULL); | |
549 | if (IS_ERR(power->usb)) { | |
550 | ret = PTR_ERR(power->usb); | |
35c3ae5e | 551 | goto err_wall; |
297d716f | 552 | } |
35c3ae5e MB |
553 | |
554 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_CONTROL_1); | |
555 | if (ret < 0) | |
556 | goto err_wall; | |
557 | power->have_battery = ret & WM831X_CHG_ENA; | |
558 | ||
559 | if (power->have_battery) { | |
297d716f KK |
560 | power->battery_desc.name = power->battery_name; |
561 | power->battery_desc.properties = wm831x_bat_props; | |
562 | power->battery_desc.num_properties = ARRAY_SIZE(wm831x_bat_props); | |
563 | power->battery_desc.get_property = wm831x_bat_get_prop; | |
564 | power->battery_desc.use_for_apm = 1; | |
565 | power->battery = power_supply_register(&pdev->dev, | |
566 | &power->battery_desc, | |
567 | NULL); | |
568 | if (IS_ERR(power->battery)) { | |
569 | ret = PTR_ERR(power->battery); | |
570 | goto err_usb; | |
571 | } | |
35c3ae5e | 572 | } |
3961f7c3 | 573 | |
cd99758b | 574 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 575 | ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq, |
90adf98d | 576 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "System power low", |
b5874f33 | 577 | power); |
3961f7c3 MB |
578 | if (ret != 0) { |
579 | dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n", | |
580 | irq, ret); | |
35c3ae5e | 581 | goto err_battery; |
3961f7c3 MB |
582 | } |
583 | ||
cd99758b | 584 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 585 | ret = request_threaded_irq(irq, NULL, wm831x_pwr_src_irq, |
90adf98d | 586 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "Power source", |
b5874f33 | 587 | power); |
3961f7c3 MB |
588 | if (ret != 0) { |
589 | dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n", | |
590 | irq, ret); | |
591 | goto err_syslo; | |
592 | } | |
593 | ||
594 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
cd99758b MB |
595 | irq = wm831x_irq(wm831x, |
596 | platform_get_irq_byname(pdev, | |
597 | wm831x_bat_irqs[i])); | |
b5874f33 | 598 | ret = request_threaded_irq(irq, NULL, wm831x_bat_irq, |
90adf98d | 599 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
b5874f33 MB |
600 | wm831x_bat_irqs[i], |
601 | power); | |
3961f7c3 MB |
602 | if (ret != 0) { |
603 | dev_err(&pdev->dev, | |
604 | "Failed to request %s IRQ %d: %d\n", | |
605 | wm831x_bat_irqs[i], irq, ret); | |
606 | goto err_bat_irq; | |
607 | } | |
608 | } | |
609 | ||
610 | return ret; | |
611 | ||
612 | err_bat_irq: | |
85a5965e | 613 | --i; |
3961f7c3 MB |
614 | for (; i >= 0; i--) { |
615 | irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]); | |
b5874f33 | 616 | free_irq(irq, power); |
3961f7c3 | 617 | } |
cd99758b | 618 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 619 | free_irq(irq, power); |
3961f7c3 | 620 | err_syslo: |
cd99758b | 621 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 622 | free_irq(irq, power); |
35c3ae5e MB |
623 | err_battery: |
624 | if (power->have_battery) | |
297d716f | 625 | power_supply_unregister(power->battery); |
3961f7c3 | 626 | err_usb: |
297d716f | 627 | power_supply_unregister(power->usb); |
3961f7c3 | 628 | err_wall: |
297d716f | 629 | power_supply_unregister(power->wall); |
c01576c8 | 630 | err: |
3961f7c3 MB |
631 | return ret; |
632 | } | |
633 | ||
415ec69f | 634 | static int wm831x_power_remove(struct platform_device *pdev) |
3961f7c3 MB |
635 | { |
636 | struct wm831x_power *wm831x_power = platform_get_drvdata(pdev); | |
cd99758b | 637 | struct wm831x *wm831x = wm831x_power->wm831x; |
3961f7c3 MB |
638 | int irq, i; |
639 | ||
640 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
cd99758b MB |
641 | irq = wm831x_irq(wm831x, |
642 | platform_get_irq_byname(pdev, | |
643 | wm831x_bat_irqs[i])); | |
b5874f33 | 644 | free_irq(irq, wm831x_power); |
3961f7c3 MB |
645 | } |
646 | ||
cd99758b | 647 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 648 | free_irq(irq, wm831x_power); |
3961f7c3 | 649 | |
cd99758b | 650 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 651 | free_irq(irq, wm831x_power); |
3961f7c3 | 652 | |
35c3ae5e | 653 | if (wm831x_power->have_battery) |
297d716f KK |
654 | power_supply_unregister(wm831x_power->battery); |
655 | power_supply_unregister(wm831x_power->wall); | |
656 | power_supply_unregister(wm831x_power->usb); | |
3961f7c3 MB |
657 | return 0; |
658 | } | |
659 | ||
660 | static struct platform_driver wm831x_power_driver = { | |
661 | .probe = wm831x_power_probe, | |
28ea73f4 | 662 | .remove = wm831x_power_remove, |
3961f7c3 MB |
663 | .driver = { |
664 | .name = "wm831x-power", | |
665 | }, | |
666 | }; | |
667 | ||
300bac7f | 668 | module_platform_driver(wm831x_power_driver); |
3961f7c3 MB |
669 | |
670 | MODULE_DESCRIPTION("Power supply driver for WM831x PMICs"); | |
671 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
672 | MODULE_LICENSE("GPL"); | |
673 | MODULE_ALIAS("platform:wm831x-power"); |