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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; | |
ccf8fa2d MB |
27 | char wall_name[20]; |
28 | char usb_name[20]; | |
29 | char battery_name[20]; | |
35c3ae5e | 30 | bool have_battery; |
3961f7c3 MB |
31 | }; |
32 | ||
33 | static int wm831x_power_check_online(struct wm831x *wm831x, int supply, | |
34 | union power_supply_propval *val) | |
35 | { | |
36 | int ret; | |
37 | ||
38 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
39 | if (ret < 0) | |
40 | return ret; | |
41 | ||
42 | if (ret & supply) | |
43 | val->intval = 1; | |
44 | else | |
45 | val->intval = 0; | |
46 | ||
47 | return 0; | |
48 | } | |
49 | ||
50 | static int wm831x_power_read_voltage(struct wm831x *wm831x, | |
51 | enum wm831x_auxadc src, | |
52 | union power_supply_propval *val) | |
53 | { | |
54 | int ret; | |
55 | ||
56 | ret = wm831x_auxadc_read_uv(wm831x, src); | |
57 | if (ret >= 0) | |
58 | val->intval = ret; | |
59 | ||
60 | return ret; | |
61 | } | |
62 | ||
63 | /********************************************************************* | |
64 | * WALL Power | |
65 | *********************************************************************/ | |
66 | static int wm831x_wall_get_prop(struct power_supply *psy, | |
67 | enum power_supply_property psp, | |
68 | union power_supply_propval *val) | |
69 | { | |
70 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
71 | struct wm831x *wm831x = wm831x_power->wm831x; | |
72 | int ret = 0; | |
73 | ||
74 | switch (psp) { | |
75 | case POWER_SUPPLY_PROP_ONLINE: | |
76 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_WALL, val); | |
77 | break; | |
78 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
79 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_WALL, val); | |
80 | break; | |
81 | default: | |
82 | ret = -EINVAL; | |
83 | break; | |
84 | } | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
89 | static enum power_supply_property wm831x_wall_props[] = { | |
90 | POWER_SUPPLY_PROP_ONLINE, | |
91 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
92 | }; | |
93 | ||
94 | /********************************************************************* | |
95 | * USB Power | |
96 | *********************************************************************/ | |
97 | static int wm831x_usb_get_prop(struct power_supply *psy, | |
98 | enum power_supply_property psp, | |
99 | union power_supply_propval *val) | |
100 | { | |
101 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
102 | struct wm831x *wm831x = wm831x_power->wm831x; | |
103 | int ret = 0; | |
104 | ||
105 | switch (psp) { | |
106 | case POWER_SUPPLY_PROP_ONLINE: | |
107 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_USB, val); | |
108 | break; | |
109 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
110 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_USB, val); | |
111 | break; | |
112 | default: | |
113 | ret = -EINVAL; | |
114 | break; | |
115 | } | |
116 | ||
117 | return ret; | |
118 | } | |
119 | ||
120 | static enum power_supply_property wm831x_usb_props[] = { | |
121 | POWER_SUPPLY_PROP_ONLINE, | |
122 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
123 | }; | |
124 | ||
125 | /********************************************************************* | |
126 | * Battery properties | |
127 | *********************************************************************/ | |
128 | ||
129 | struct chg_map { | |
130 | int val; | |
131 | int reg_val; | |
132 | }; | |
133 | ||
134 | static struct chg_map trickle_ilims[] = { | |
135 | { 50, 0 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
136 | { 100, 1 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
137 | { 150, 2 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
138 | { 200, 3 << WM831X_CHG_TRKL_ILIM_SHIFT }, | |
139 | }; | |
140 | ||
141 | static struct chg_map vsels[] = { | |
142 | { 4050, 0 << WM831X_CHG_VSEL_SHIFT }, | |
143 | { 4100, 1 << WM831X_CHG_VSEL_SHIFT }, | |
144 | { 4150, 2 << WM831X_CHG_VSEL_SHIFT }, | |
145 | { 4200, 3 << WM831X_CHG_VSEL_SHIFT }, | |
146 | }; | |
147 | ||
148 | static struct chg_map fast_ilims[] = { | |
149 | { 0, 0 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
150 | { 50, 1 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
151 | { 100, 2 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
152 | { 150, 3 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
153 | { 200, 4 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
154 | { 250, 5 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
155 | { 300, 6 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
156 | { 350, 7 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
157 | { 400, 8 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
158 | { 450, 9 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
159 | { 500, 10 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
160 | { 600, 11 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
161 | { 700, 12 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
162 | { 800, 13 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
163 | { 900, 14 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
164 | { 1000, 15 << WM831X_CHG_FAST_ILIM_SHIFT }, | |
165 | }; | |
166 | ||
167 | static struct chg_map eoc_iterms[] = { | |
168 | { 20, 0 << WM831X_CHG_ITERM_SHIFT }, | |
169 | { 30, 1 << WM831X_CHG_ITERM_SHIFT }, | |
170 | { 40, 2 << WM831X_CHG_ITERM_SHIFT }, | |
171 | { 50, 3 << WM831X_CHG_ITERM_SHIFT }, | |
172 | { 60, 4 << WM831X_CHG_ITERM_SHIFT }, | |
173 | { 70, 5 << WM831X_CHG_ITERM_SHIFT }, | |
174 | { 80, 6 << WM831X_CHG_ITERM_SHIFT }, | |
175 | { 90, 7 << WM831X_CHG_ITERM_SHIFT }, | |
176 | }; | |
177 | ||
178 | static struct chg_map chg_times[] = { | |
179 | { 60, 0 << WM831X_CHG_TIME_SHIFT }, | |
180 | { 90, 1 << WM831X_CHG_TIME_SHIFT }, | |
181 | { 120, 2 << WM831X_CHG_TIME_SHIFT }, | |
182 | { 150, 3 << WM831X_CHG_TIME_SHIFT }, | |
183 | { 180, 4 << WM831X_CHG_TIME_SHIFT }, | |
184 | { 210, 5 << WM831X_CHG_TIME_SHIFT }, | |
185 | { 240, 6 << WM831X_CHG_TIME_SHIFT }, | |
186 | { 270, 7 << WM831X_CHG_TIME_SHIFT }, | |
187 | { 300, 8 << WM831X_CHG_TIME_SHIFT }, | |
188 | { 330, 9 << WM831X_CHG_TIME_SHIFT }, | |
189 | { 360, 10 << WM831X_CHG_TIME_SHIFT }, | |
190 | { 390, 11 << WM831X_CHG_TIME_SHIFT }, | |
191 | { 420, 12 << WM831X_CHG_TIME_SHIFT }, | |
192 | { 450, 13 << WM831X_CHG_TIME_SHIFT }, | |
193 | { 480, 14 << WM831X_CHG_TIME_SHIFT }, | |
194 | { 510, 15 << WM831X_CHG_TIME_SHIFT }, | |
195 | }; | |
196 | ||
197 | static void wm831x_battey_apply_config(struct wm831x *wm831x, | |
198 | struct chg_map *map, int count, int val, | |
199 | int *reg, const char *name, | |
200 | const char *units) | |
201 | { | |
202 | int i; | |
203 | ||
204 | for (i = 0; i < count; i++) | |
205 | if (val == map[i].val) | |
206 | break; | |
207 | if (i == count) { | |
208 | dev_err(wm831x->dev, "Invalid %s %d%s\n", | |
209 | name, val, units); | |
210 | } else { | |
211 | *reg |= map[i].reg_val; | |
212 | dev_dbg(wm831x->dev, "Set %s of %d%s\n", name, val, units); | |
213 | } | |
214 | } | |
215 | ||
216 | static void wm831x_config_battery(struct wm831x *wm831x) | |
217 | { | |
218 | struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; | |
219 | struct wm831x_battery_pdata *pdata; | |
220 | int ret, reg1, reg2; | |
221 | ||
222 | if (!wm831x_pdata || !wm831x_pdata->battery) { | |
223 | dev_warn(wm831x->dev, | |
224 | "No battery charger configuration\n"); | |
225 | return; | |
226 | } | |
227 | ||
228 | pdata = wm831x_pdata->battery; | |
229 | ||
230 | reg1 = 0; | |
231 | reg2 = 0; | |
232 | ||
233 | if (!pdata->enable) { | |
234 | dev_info(wm831x->dev, "Battery charger disabled\n"); | |
235 | return; | |
236 | } | |
237 | ||
238 | reg1 |= WM831X_CHG_ENA; | |
239 | if (pdata->off_mask) | |
240 | reg2 |= WM831X_CHG_OFF_MSK; | |
241 | if (pdata->fast_enable) | |
242 | reg1 |= WM831X_CHG_FAST; | |
243 | ||
244 | wm831x_battey_apply_config(wm831x, trickle_ilims, | |
245 | ARRAY_SIZE(trickle_ilims), | |
246 | pdata->trickle_ilim, ®2, | |
247 | "trickle charge current limit", "mA"); | |
248 | ||
249 | wm831x_battey_apply_config(wm831x, vsels, ARRAY_SIZE(vsels), | |
250 | pdata->vsel, ®2, | |
251 | "target voltage", "mV"); | |
252 | ||
253 | wm831x_battey_apply_config(wm831x, fast_ilims, ARRAY_SIZE(fast_ilims), | |
254 | pdata->fast_ilim, ®2, | |
255 | "fast charge current limit", "mA"); | |
256 | ||
257 | wm831x_battey_apply_config(wm831x, eoc_iterms, ARRAY_SIZE(eoc_iterms), | |
258 | pdata->eoc_iterm, ®1, | |
259 | "end of charge current threshold", "mA"); | |
260 | ||
261 | wm831x_battey_apply_config(wm831x, chg_times, ARRAY_SIZE(chg_times), | |
262 | pdata->timeout, ®2, | |
263 | "charger timeout", "min"); | |
264 | ||
265 | ret = wm831x_reg_unlock(wm831x); | |
266 | if (ret != 0) { | |
267 | dev_err(wm831x->dev, "Failed to unlock registers: %d\n", ret); | |
268 | return; | |
269 | } | |
270 | ||
271 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1, | |
272 | WM831X_CHG_ENA_MASK | | |
273 | WM831X_CHG_FAST_MASK | | |
3961f7c3 MB |
274 | WM831X_CHG_ITERM_MASK, |
275 | reg1); | |
276 | if (ret != 0) | |
277 | dev_err(wm831x->dev, "Failed to set charger control 1: %d\n", | |
278 | ret); | |
279 | ||
280 | ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_2, | |
281 | WM831X_CHG_OFF_MSK | | |
282 | WM831X_CHG_TIME_MASK | | |
283 | WM831X_CHG_FAST_ILIM_MASK | | |
284 | WM831X_CHG_TRKL_ILIM_MASK | | |
285 | WM831X_CHG_VSEL_MASK, | |
286 | reg2); | |
287 | if (ret != 0) | |
288 | dev_err(wm831x->dev, "Failed to set charger control 2: %d\n", | |
289 | ret); | |
290 | ||
291 | wm831x_reg_lock(wm831x); | |
292 | } | |
293 | ||
294 | static int wm831x_bat_check_status(struct wm831x *wm831x, int *status) | |
295 | { | |
296 | int ret; | |
297 | ||
298 | ret = wm831x_reg_read(wm831x, WM831X_SYSTEM_STATUS); | |
299 | if (ret < 0) | |
300 | return ret; | |
301 | ||
302 | if (ret & WM831X_PWR_SRC_BATT) { | |
303 | *status = POWER_SUPPLY_STATUS_DISCHARGING; | |
304 | return 0; | |
305 | } | |
306 | ||
307 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
308 | if (ret < 0) | |
309 | return ret; | |
310 | ||
311 | switch (ret & WM831X_CHG_STATE_MASK) { | |
312 | case WM831X_CHG_STATE_OFF: | |
313 | *status = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
314 | break; | |
315 | case WM831X_CHG_STATE_TRICKLE: | |
316 | case WM831X_CHG_STATE_FAST: | |
317 | *status = POWER_SUPPLY_STATUS_CHARGING; | |
318 | break; | |
319 | ||
320 | default: | |
321 | *status = POWER_SUPPLY_STATUS_UNKNOWN; | |
322 | break; | |
323 | } | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | static int wm831x_bat_check_type(struct wm831x *wm831x, int *type) | |
329 | { | |
330 | int ret; | |
331 | ||
332 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
333 | if (ret < 0) | |
334 | return ret; | |
335 | ||
336 | switch (ret & WM831X_CHG_STATE_MASK) { | |
337 | case WM831X_CHG_STATE_TRICKLE: | |
338 | case WM831X_CHG_STATE_TRICKLE_OT: | |
339 | *type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; | |
340 | break; | |
341 | case WM831X_CHG_STATE_FAST: | |
342 | case WM831X_CHG_STATE_FAST_OT: | |
343 | *type = POWER_SUPPLY_CHARGE_TYPE_FAST; | |
344 | break; | |
345 | default: | |
346 | *type = POWER_SUPPLY_CHARGE_TYPE_NONE; | |
347 | break; | |
348 | } | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static int wm831x_bat_check_health(struct wm831x *wm831x, int *health) | |
354 | { | |
355 | int ret; | |
356 | ||
357 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_STATUS); | |
358 | if (ret < 0) | |
359 | return ret; | |
360 | ||
361 | if (ret & WM831X_BATT_HOT_STS) { | |
362 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
363 | return 0; | |
364 | } | |
365 | ||
366 | if (ret & WM831X_BATT_COLD_STS) { | |
367 | *health = POWER_SUPPLY_HEALTH_COLD; | |
368 | return 0; | |
369 | } | |
370 | ||
371 | if (ret & WM831X_BATT_OV_STS) { | |
372 | *health = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
373 | return 0; | |
374 | } | |
375 | ||
376 | switch (ret & WM831X_CHG_STATE_MASK) { | |
377 | case WM831X_CHG_STATE_TRICKLE_OT: | |
378 | case WM831X_CHG_STATE_FAST_OT: | |
379 | *health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
380 | break; | |
381 | case WM831X_CHG_STATE_DEFECTIVE: | |
382 | *health = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
383 | break; | |
384 | default: | |
385 | *health = POWER_SUPPLY_HEALTH_GOOD; | |
386 | break; | |
387 | } | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | static int wm831x_bat_get_prop(struct power_supply *psy, | |
393 | enum power_supply_property psp, | |
394 | union power_supply_propval *val) | |
395 | { | |
396 | struct wm831x_power *wm831x_power = dev_get_drvdata(psy->dev->parent); | |
397 | struct wm831x *wm831x = wm831x_power->wm831x; | |
398 | int ret = 0; | |
399 | ||
400 | switch (psp) { | |
401 | case POWER_SUPPLY_PROP_STATUS: | |
402 | ret = wm831x_bat_check_status(wm831x, &val->intval); | |
403 | break; | |
404 | case POWER_SUPPLY_PROP_ONLINE: | |
405 | ret = wm831x_power_check_online(wm831x, WM831X_PWR_SRC_BATT, | |
406 | val); | |
407 | break; | |
408 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
409 | ret = wm831x_power_read_voltage(wm831x, WM831X_AUX_BATT, val); | |
410 | break; | |
411 | case POWER_SUPPLY_PROP_HEALTH: | |
412 | ret = wm831x_bat_check_health(wm831x, &val->intval); | |
413 | break; | |
414 | case POWER_SUPPLY_PROP_CHARGE_TYPE: | |
415 | ret = wm831x_bat_check_type(wm831x, &val->intval); | |
416 | break; | |
417 | default: | |
418 | ret = -EINVAL; | |
419 | break; | |
420 | } | |
421 | ||
422 | return ret; | |
423 | } | |
424 | ||
425 | static enum power_supply_property wm831x_bat_props[] = { | |
426 | POWER_SUPPLY_PROP_STATUS, | |
427 | POWER_SUPPLY_PROP_ONLINE, | |
428 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
429 | POWER_SUPPLY_PROP_HEALTH, | |
430 | POWER_SUPPLY_PROP_CHARGE_TYPE, | |
431 | }; | |
432 | ||
433 | static const char *wm831x_bat_irqs[] = { | |
434 | "BATT HOT", | |
435 | "BATT COLD", | |
436 | "BATT FAIL", | |
437 | "OV", | |
438 | "END", | |
439 | "TO", | |
440 | "MODE", | |
441 | "START", | |
442 | }; | |
443 | ||
444 | static irqreturn_t wm831x_bat_irq(int irq, void *data) | |
445 | { | |
446 | struct wm831x_power *wm831x_power = data; | |
447 | struct wm831x *wm831x = wm831x_power->wm831x; | |
448 | ||
449 | dev_dbg(wm831x->dev, "Battery status changed: %d\n", irq); | |
450 | ||
451 | /* The battery charger is autonomous so we don't need to do | |
452 | * anything except kick user space */ | |
35c3ae5e MB |
453 | if (wm831x_power->have_battery) |
454 | power_supply_changed(&wm831x_power->battery); | |
3961f7c3 MB |
455 | |
456 | return IRQ_HANDLED; | |
457 | } | |
458 | ||
459 | ||
3961f7c3 MB |
460 | /********************************************************************* |
461 | * Initialisation | |
462 | *********************************************************************/ | |
463 | ||
464 | static irqreturn_t wm831x_syslo_irq(int irq, void *data) | |
465 | { | |
466 | struct wm831x_power *wm831x_power = data; | |
467 | struct wm831x *wm831x = wm831x_power->wm831x; | |
468 | ||
469 | /* Not much we can actually *do* but tell people for | |
470 | * posterity, we're probably about to run out of power. */ | |
471 | dev_crit(wm831x->dev, "SYSVDD under voltage\n"); | |
472 | ||
473 | return IRQ_HANDLED; | |
474 | } | |
475 | ||
476 | static irqreturn_t wm831x_pwr_src_irq(int irq, void *data) | |
477 | { | |
478 | struct wm831x_power *wm831x_power = data; | |
479 | struct wm831x *wm831x = wm831x_power->wm831x; | |
480 | ||
481 | dev_dbg(wm831x->dev, "Power source changed\n"); | |
482 | ||
c26964ea | 483 | /* Just notify for everything - little harm in overnotifying. */ |
35c3ae5e MB |
484 | if (wm831x_power->have_battery) |
485 | power_supply_changed(&wm831x_power->battery); | |
3961f7c3 MB |
486 | power_supply_changed(&wm831x_power->usb); |
487 | power_supply_changed(&wm831x_power->wall); | |
488 | ||
489 | return IRQ_HANDLED; | |
490 | } | |
491 | ||
c8afa640 | 492 | static int wm831x_power_probe(struct platform_device *pdev) |
3961f7c3 MB |
493 | { |
494 | struct wm831x *wm831x = dev_get_drvdata(pdev->dev.parent); | |
ccf8fa2d | 495 | struct wm831x_pdata *wm831x_pdata = wm831x->dev->platform_data; |
3961f7c3 MB |
496 | struct wm831x_power *power; |
497 | struct power_supply *usb; | |
498 | struct power_supply *battery; | |
499 | struct power_supply *wall; | |
3961f7c3 MB |
500 | int ret, irq, i; |
501 | ||
502 | power = kzalloc(sizeof(struct wm831x_power), GFP_KERNEL); | |
503 | if (power == NULL) | |
504 | return -ENOMEM; | |
505 | ||
506 | power->wm831x = wm831x; | |
507 | platform_set_drvdata(pdev, power); | |
508 | ||
509 | usb = &power->usb; | |
510 | battery = &power->battery; | |
511 | wall = &power->wall; | |
3961f7c3 | 512 | |
ccf8fa2d MB |
513 | if (wm831x_pdata && wm831x_pdata->wm831x_num) { |
514 | snprintf(power->wall_name, sizeof(power->wall_name), | |
515 | "wm831x-wall.%d", wm831x_pdata->wm831x_num); | |
516 | snprintf(power->battery_name, sizeof(power->wall_name), | |
517 | "wm831x-battery.%d", wm831x_pdata->wm831x_num); | |
518 | snprintf(power->usb_name, sizeof(power->wall_name), | |
519 | "wm831x-usb.%d", wm831x_pdata->wm831x_num); | |
520 | } else { | |
521 | snprintf(power->wall_name, sizeof(power->wall_name), | |
522 | "wm831x-wall"); | |
523 | snprintf(power->battery_name, sizeof(power->wall_name), | |
524 | "wm831x-battery"); | |
525 | snprintf(power->usb_name, sizeof(power->wall_name), | |
526 | "wm831x-usb"); | |
527 | } | |
528 | ||
3961f7c3 | 529 | /* We ignore configuration failures since we can still read back |
c26964ea | 530 | * the status without enabling the charger. |
3961f7c3 MB |
531 | */ |
532 | wm831x_config_battery(wm831x); | |
3961f7c3 | 533 | |
ccf8fa2d | 534 | wall->name = power->wall_name; |
3961f7c3 MB |
535 | wall->type = POWER_SUPPLY_TYPE_MAINS; |
536 | wall->properties = wm831x_wall_props; | |
537 | wall->num_properties = ARRAY_SIZE(wm831x_wall_props); | |
538 | wall->get_property = wm831x_wall_get_prop; | |
539 | ret = power_supply_register(&pdev->dev, wall); | |
540 | if (ret) | |
541 | goto err_kmalloc; | |
542 | ||
ccf8fa2d | 543 | usb->name = power->usb_name, |
3961f7c3 MB |
544 | usb->type = POWER_SUPPLY_TYPE_USB; |
545 | usb->properties = wm831x_usb_props; | |
546 | usb->num_properties = ARRAY_SIZE(wm831x_usb_props); | |
547 | usb->get_property = wm831x_usb_get_prop; | |
548 | ret = power_supply_register(&pdev->dev, usb); | |
549 | if (ret) | |
35c3ae5e MB |
550 | goto err_wall; |
551 | ||
552 | ret = wm831x_reg_read(wm831x, WM831X_CHARGER_CONTROL_1); | |
553 | if (ret < 0) | |
554 | goto err_wall; | |
555 | power->have_battery = ret & WM831X_CHG_ENA; | |
556 | ||
557 | if (power->have_battery) { | |
558 | battery->name = power->battery_name; | |
559 | battery->properties = wm831x_bat_props; | |
560 | battery->num_properties = ARRAY_SIZE(wm831x_bat_props); | |
561 | battery->get_property = wm831x_bat_get_prop; | |
562 | battery->use_for_apm = 1; | |
563 | ret = power_supply_register(&pdev->dev, battery); | |
564 | if (ret) | |
565 | goto err_usb; | |
566 | } | |
3961f7c3 | 567 | |
cd99758b | 568 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 569 | ret = request_threaded_irq(irq, NULL, wm831x_syslo_irq, |
6fb54962 | 570 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "System power low", |
b5874f33 | 571 | power); |
3961f7c3 MB |
572 | if (ret != 0) { |
573 | dev_err(&pdev->dev, "Failed to request SYSLO IRQ %d: %d\n", | |
574 | irq, ret); | |
35c3ae5e | 575 | goto err_battery; |
3961f7c3 MB |
576 | } |
577 | ||
cd99758b | 578 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 579 | ret = request_threaded_irq(irq, NULL, wm831x_pwr_src_irq, |
6fb54962 | 580 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, "Power source", |
b5874f33 | 581 | power); |
3961f7c3 MB |
582 | if (ret != 0) { |
583 | dev_err(&pdev->dev, "Failed to request PWR SRC IRQ %d: %d\n", | |
584 | irq, ret); | |
585 | goto err_syslo; | |
586 | } | |
587 | ||
588 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
cd99758b MB |
589 | irq = wm831x_irq(wm831x, |
590 | platform_get_irq_byname(pdev, | |
591 | wm831x_bat_irqs[i])); | |
b5874f33 | 592 | ret = request_threaded_irq(irq, NULL, wm831x_bat_irq, |
6fb54962 | 593 | IRQF_TRIGGER_RISING | IRQF_ONESHOT, |
b5874f33 MB |
594 | wm831x_bat_irqs[i], |
595 | power); | |
3961f7c3 MB |
596 | if (ret != 0) { |
597 | dev_err(&pdev->dev, | |
598 | "Failed to request %s IRQ %d: %d\n", | |
599 | wm831x_bat_irqs[i], irq, ret); | |
600 | goto err_bat_irq; | |
601 | } | |
602 | } | |
603 | ||
604 | return ret; | |
605 | ||
606 | err_bat_irq: | |
607 | for (; i >= 0; i--) { | |
608 | irq = platform_get_irq_byname(pdev, wm831x_bat_irqs[i]); | |
b5874f33 | 609 | free_irq(irq, power); |
3961f7c3 | 610 | } |
cd99758b | 611 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 612 | free_irq(irq, power); |
3961f7c3 | 613 | err_syslo: |
cd99758b | 614 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 615 | free_irq(irq, power); |
35c3ae5e MB |
616 | err_battery: |
617 | if (power->have_battery) | |
618 | power_supply_unregister(battery); | |
3961f7c3 MB |
619 | err_usb: |
620 | power_supply_unregister(usb); | |
3961f7c3 MB |
621 | err_wall: |
622 | power_supply_unregister(wall); | |
623 | err_kmalloc: | |
624 | kfree(power); | |
625 | return ret; | |
626 | } | |
627 | ||
415ec69f | 628 | static int wm831x_power_remove(struct platform_device *pdev) |
3961f7c3 MB |
629 | { |
630 | struct wm831x_power *wm831x_power = platform_get_drvdata(pdev); | |
cd99758b | 631 | struct wm831x *wm831x = wm831x_power->wm831x; |
3961f7c3 MB |
632 | int irq, i; |
633 | ||
634 | for (i = 0; i < ARRAY_SIZE(wm831x_bat_irqs); i++) { | |
cd99758b MB |
635 | irq = wm831x_irq(wm831x, |
636 | platform_get_irq_byname(pdev, | |
637 | wm831x_bat_irqs[i])); | |
b5874f33 | 638 | free_irq(irq, wm831x_power); |
3961f7c3 MB |
639 | } |
640 | ||
cd99758b | 641 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "PWR SRC")); |
b5874f33 | 642 | free_irq(irq, wm831x_power); |
3961f7c3 | 643 | |
cd99758b | 644 | irq = wm831x_irq(wm831x, platform_get_irq_byname(pdev, "SYSLO")); |
b5874f33 | 645 | free_irq(irq, wm831x_power); |
3961f7c3 | 646 | |
35c3ae5e MB |
647 | if (wm831x_power->have_battery) |
648 | power_supply_unregister(&wm831x_power->battery); | |
3961f7c3 MB |
649 | power_supply_unregister(&wm831x_power->wall); |
650 | power_supply_unregister(&wm831x_power->usb); | |
9c99f089 | 651 | kfree(wm831x_power); |
3961f7c3 MB |
652 | return 0; |
653 | } | |
654 | ||
655 | static struct platform_driver wm831x_power_driver = { | |
656 | .probe = wm831x_power_probe, | |
28ea73f4 | 657 | .remove = wm831x_power_remove, |
3961f7c3 MB |
658 | .driver = { |
659 | .name = "wm831x-power", | |
660 | }, | |
661 | }; | |
662 | ||
300bac7f | 663 | module_platform_driver(wm831x_power_driver); |
3961f7c3 MB |
664 | |
665 | MODULE_DESCRIPTION("Power supply driver for WM831x PMICs"); | |
666 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
667 | MODULE_LICENSE("GPL"); | |
668 | MODULE_ALIAS("platform:wm831x-power"); |