Commit | Line | Data |
---|---|---|
01ec8c54 | 1 | /* |
01ec8c54 MJ |
2 | * Copyright 2012 ST Ericsson. |
3 | * | |
2fa5b0f4 LJ |
4 | * Power supply driver for ST Ericsson pm2xxx_charger charger |
5 | * | |
01ec8c54 MJ |
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/init.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/device.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/power_supply.h> | |
19 | #include <linux/completion.h> | |
20 | #include <linux/regulator/consumer.h> | |
21 | #include <linux/err.h> | |
22 | #include <linux/i2c.h> | |
23 | #include <linux/workqueue.h> | |
24 | #include <linux/kobject.h> | |
25 | #include <linux/mfd/abx500.h> | |
26 | #include <linux/mfd/abx500/ab8500.h> | |
27 | #include <linux/mfd/abx500/ab8500-bm.h> | |
28 | #include <linux/mfd/abx500/ab8500-gpadc.h> | |
29 | #include <linux/mfd/abx500/ux500_chargalg.h> | |
30 | #include <linux/pm2301_charger.h> | |
3988043b | 31 | #include <linux/gpio.h> |
01ec8c54 | 32 | |
2fa5b0f4 | 33 | #include "pm2301_charger.h" |
01ec8c54 MJ |
34 | |
35 | #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \ | |
36 | struct pm2xxx_charger, ac_chg) | |
49fddeec MBZ |
37 | #define SLEEP_MIN 50 |
38 | #define SLEEP_MAX 100 | |
01ec8c54 MJ |
39 | |
40 | static int pm2xxx_interrupt_registers[] = { | |
41 | PM2XXX_REG_INT1, | |
42 | PM2XXX_REG_INT2, | |
43 | PM2XXX_REG_INT3, | |
44 | PM2XXX_REG_INT4, | |
45 | PM2XXX_REG_INT5, | |
46 | PM2XXX_REG_INT6, | |
47 | }; | |
48 | ||
01ec8c54 MJ |
49 | static enum power_supply_property pm2xxx_charger_ac_props[] = { |
50 | POWER_SUPPLY_PROP_HEALTH, | |
51 | POWER_SUPPLY_PROP_PRESENT, | |
52 | POWER_SUPPLY_PROP_ONLINE, | |
01ec8c54 | 53 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
01ec8c54 MJ |
54 | }; |
55 | ||
56 | static int pm2xxx_charger_voltage_map[] = { | |
57 | 3500, | |
58 | 3525, | |
59 | 3550, | |
60 | 3575, | |
61 | 3600, | |
62 | 3625, | |
63 | 3650, | |
64 | 3675, | |
65 | 3700, | |
66 | 3725, | |
67 | 3750, | |
68 | 3775, | |
69 | 3800, | |
70 | 3825, | |
71 | 3850, | |
72 | 3875, | |
73 | 3900, | |
74 | 3925, | |
75 | 3950, | |
76 | 3975, | |
77 | 4000, | |
78 | 4025, | |
79 | 4050, | |
80 | 4075, | |
81 | 4100, | |
82 | 4125, | |
83 | 4150, | |
84 | 4175, | |
85 | 4200, | |
86 | 4225, | |
87 | 4250, | |
88 | 4275, | |
89 | 4300, | |
90 | }; | |
91 | ||
92 | static int pm2xxx_charger_current_map[] = { | |
93 | 200, | |
94 | 200, | |
95 | 400, | |
96 | 600, | |
97 | 800, | |
98 | 1000, | |
99 | 1200, | |
100 | 1400, | |
101 | 1600, | |
102 | 1800, | |
103 | 2000, | |
104 | 2200, | |
105 | 2400, | |
106 | 2600, | |
107 | 2800, | |
108 | 3000, | |
109 | }; | |
110 | ||
01ec8c54 MJ |
111 | static const struct i2c_device_id pm2xxx_ident[] = { |
112 | { "pm2301", 0 }, | |
113 | { } | |
114 | }; | |
115 | ||
3988043b LJ |
116 | static void set_lpn_pin(struct pm2xxx_charger *pm2) |
117 | { | |
3988043b | 118 | gpio_set_value(pm2->lpn_pin, 1); |
49fddeec | 119 | usleep_range(SLEEP_MIN, SLEEP_MAX); |
3988043b LJ |
120 | |
121 | return; | |
122 | } | |
123 | ||
124 | static void clear_lpn_pin(struct pm2xxx_charger *pm2) | |
125 | { | |
3988043b LJ |
126 | gpio_set_value(pm2->lpn_pin, 0); |
127 | ||
128 | return; | |
129 | } | |
130 | ||
01ec8c54 MJ |
131 | static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val) |
132 | { | |
133 | int ret; | |
3988043b LJ |
134 | /* |
135 | * When AC adaptor is unplugged, the host | |
136 | * must put LPN high to be able to | |
137 | * communicate by I2C with PM2301 | |
138 | * and receive I2C "acknowledge" from PM2301. | |
139 | */ | |
140 | mutex_lock(&pm2->lock); | |
01ec8c54 MJ |
141 | |
142 | ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
143 | 1, val); | |
144 | if (ret < 0) | |
145 | dev_err(pm2->dev, "Error reading register at 0x%x\n", reg); | |
e41f39ea RK |
146 | else |
147 | ret = 0; | |
3988043b | 148 | mutex_unlock(&pm2->lock); |
01ec8c54 MJ |
149 | |
150 | return ret; | |
151 | } | |
152 | ||
153 | static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val) | |
154 | { | |
155 | int ret; | |
3988043b LJ |
156 | /* |
157 | * When AC adaptor is unplugged, the host | |
158 | * must put LPN high to be able to | |
159 | * communicate by I2C with PM2301 | |
160 | * and receive I2C "acknowledge" from PM2301. | |
161 | */ | |
162 | mutex_lock(&pm2->lock); | |
01ec8c54 MJ |
163 | |
164 | ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
165 | 1, &val); | |
166 | if (ret < 0) | |
167 | dev_err(pm2->dev, "Error writing register at 0x%x\n", reg); | |
e41f39ea RK |
168 | else |
169 | ret = 0; | |
3988043b | 170 | mutex_unlock(&pm2->lock); |
01ec8c54 MJ |
171 | |
172 | return ret; | |
173 | } | |
174 | ||
175 | static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2) | |
176 | { | |
177 | int ret; | |
178 | ||
179 | /* Enable charging */ | |
180 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
181 | (PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA)); | |
182 | ||
183 | return ret; | |
184 | } | |
185 | ||
186 | static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2) | |
187 | { | |
188 | int ret; | |
189 | ||
584f9703 RK |
190 | /* Disable SW EOC ctrl */ |
191 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, PM2XXX_SWCTRL_HW); | |
192 | if (ret < 0) { | |
193 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
194 | return ret; | |
195 | } | |
196 | ||
01ec8c54 MJ |
197 | /* Disable charging */ |
198 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
199 | (PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS)); | |
584f9703 RK |
200 | if (ret < 0) { |
201 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
202 | return ret; | |
203 | } | |
01ec8c54 | 204 | |
584f9703 | 205 | return 0; |
01ec8c54 MJ |
206 | } |
207 | ||
208 | static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val) | |
209 | { | |
210 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | ||
216 | int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val) | |
217 | { | |
218 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
219 | ||
220 | return 0; | |
221 | } | |
222 | ||
223 | static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val) | |
224 | { | |
789ca7b4 RK |
225 | dev_err(pm2->dev, "Overvoltage detected\n"); |
226 | pm2->flags.ovv = true; | |
227 | power_supply_changed(&pm2->ac_chg.psy); | |
01ec8c54 | 228 | |
789ca7b4 RK |
229 | /* Schedule a new HW failure check */ |
230 | queue_delayed_work(pm2->charger_wq, &pm2->check_hw_failure_work, 0); | |
01ec8c54 | 231 | |
789ca7b4 | 232 | return 0; |
01ec8c54 MJ |
233 | } |
234 | ||
235 | static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val) | |
236 | { | |
237 | dev_dbg(pm2->dev , "20 minutes watchdog occured\n"); | |
238 | ||
239 | pm2->ac.wd_expired = true; | |
240 | power_supply_changed(&pm2->ac_chg.psy); | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val) | |
246 | { | |
584f9703 RK |
247 | int ret; |
248 | ||
01ec8c54 MJ |
249 | switch (val) { |
250 | case PM2XXX_INT1_ITVBATLOWR: | |
251 | dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n"); | |
584f9703 RK |
252 | /* Enable SW EOC ctrl */ |
253 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
254 | PM2XXX_SWCTRL_SW); | |
255 | if (ret < 0) { | |
256 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
257 | return ret; | |
258 | } | |
01ec8c54 MJ |
259 | break; |
260 | ||
261 | case PM2XXX_INT1_ITVBATLOWF: | |
262 | dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n"); | |
584f9703 RK |
263 | /* Disable SW EOC ctrl */ |
264 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
265 | PM2XXX_SWCTRL_HW); | |
266 | if (ret < 0) { | |
267 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
268 | return ret; | |
269 | } | |
01ec8c54 MJ |
270 | break; |
271 | ||
272 | default: | |
273 | dev_err(pm2->dev, "Unknown VBAT level\n"); | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val) | |
280 | { | |
281 | dev_dbg(pm2->dev, "battery disconnected\n"); | |
282 | ||
006f82d6 | 283 | return 0; |
01ec8c54 MJ |
284 | } |
285 | ||
286 | static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val) | |
287 | { | |
e41f39ea | 288 | int ret; |
01ec8c54 MJ |
289 | |
290 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val); | |
291 | ||
292 | if (ret < 0) { | |
293 | dev_err(pm2->dev, "Charger detection failed\n"); | |
294 | goto out; | |
295 | } | |
296 | ||
297 | *val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG); | |
e41f39ea | 298 | |
01ec8c54 MJ |
299 | out: |
300 | return ret; | |
301 | } | |
302 | ||
303 | static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val) | |
304 | { | |
305 | ||
306 | int ret; | |
307 | u8 read_val; | |
308 | ||
309 | /* | |
310 | * Since we can't be sure that the events are received | |
311 | * synchronously, we have the check if the main charger is | |
312 | * connected by reading the interrupt source register. | |
313 | */ | |
314 | ret = pm2xxx_charger_detection(pm2, &read_val); | |
315 | ||
316 | if ((ret == 0) && read_val) { | |
317 | pm2->ac.charger_connected = 1; | |
318 | pm2->ac_conn = true; | |
319 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
320 | } | |
321 | ||
322 | ||
323 | return ret; | |
324 | } | |
325 | ||
326 | static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2, | |
327 | int val) | |
328 | { | |
329 | pm2->ac.charger_connected = 0; | |
330 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
006f82d6 | 335 | static int pm2_int_reg0(void *pm2_data, int val) |
01ec8c54 | 336 | { |
006f82d6 | 337 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
338 | int ret = 0; |
339 | ||
584f9703 RK |
340 | if (val & PM2XXX_INT1_ITVBATLOWR) { |
341 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
342 | PM2XXX_INT1_ITVBATLOWR); | |
343 | if (ret < 0) | |
344 | goto out; | |
345 | } | |
346 | ||
347 | if (val & PM2XXX_INT1_ITVBATLOWF) { | |
348 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
349 | PM2XXX_INT1_ITVBATLOWF); | |
350 | if (ret < 0) | |
351 | goto out; | |
01ec8c54 MJ |
352 | } |
353 | ||
006f82d6 | 354 | if (val & PM2XXX_INT1_ITVBATDISCONNECT) { |
01ec8c54 MJ |
355 | ret = pm2xxx_charger_bat_disc_mngt(pm2, |
356 | PM2XXX_INT1_ITVBATDISCONNECT); | |
584f9703 RK |
357 | if (ret < 0) |
358 | goto out; | |
01ec8c54 | 359 | } |
584f9703 | 360 | out: |
01ec8c54 MJ |
361 | return ret; |
362 | } | |
363 | ||
006f82d6 | 364 | static int pm2_int_reg1(void *pm2_data, int val) |
01ec8c54 | 365 | { |
006f82d6 | 366 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
367 | int ret = 0; |
368 | ||
006f82d6 | 369 | if (val & (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) { |
01ec8c54 | 370 | dev_dbg(pm2->dev , "Main charger plugged\n"); |
006f82d6 | 371 | ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, val & |
01ec8c54 MJ |
372 | (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)); |
373 | } | |
374 | ||
006f82d6 | 375 | if (val & |
01ec8c54 MJ |
376 | (PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) { |
377 | dev_dbg(pm2->dev , "Main charger unplugged\n"); | |
006f82d6 | 378 | ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, val & |
01ec8c54 MJ |
379 | (PM2XXX_INT2_ITVPWR1UNPLUG | |
380 | PM2XXX_INT2_ITVPWR2UNPLUG)); | |
381 | } | |
382 | ||
383 | return ret; | |
384 | } | |
385 | ||
006f82d6 | 386 | static int pm2_int_reg2(void *pm2_data, int val) |
01ec8c54 | 387 | { |
006f82d6 | 388 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
389 | int ret = 0; |
390 | ||
006f82d6 OC |
391 | if (val & PM2XXX_INT3_ITAUTOTIMEOUTWD) |
392 | ret = pm2xxx_charger_wd_exp_mngt(pm2, val); | |
01ec8c54 | 393 | |
006f82d6 | 394 | if (val & (PM2XXX_INT3_ITCHPRECHARGEWD | |
01ec8c54 MJ |
395 | PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) { |
396 | dev_dbg(pm2->dev, | |
397 | "Watchdog occured for precharge, CC and CV charge\n"); | |
398 | } | |
399 | ||
400 | return ret; | |
401 | } | |
402 | ||
006f82d6 | 403 | static int pm2_int_reg3(void *pm2_data, int val) |
01ec8c54 | 404 | { |
006f82d6 | 405 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
406 | int ret = 0; |
407 | ||
006f82d6 | 408 | if (val & (PM2XXX_INT4_ITCHARGINGON)) { |
01ec8c54 MJ |
409 | dev_dbg(pm2->dev , |
410 | "chargind operation has started\n"); | |
411 | } | |
412 | ||
006f82d6 | 413 | if (val & (PM2XXX_INT4_ITVRESUME)) { |
01ec8c54 MJ |
414 | dev_dbg(pm2->dev, |
415 | "battery discharged down to VResume threshold\n"); | |
416 | } | |
417 | ||
006f82d6 | 418 | if (val & (PM2XXX_INT4_ITBATTFULL)) { |
01ec8c54 MJ |
419 | dev_dbg(pm2->dev , "battery fully detected\n"); |
420 | } | |
421 | ||
006f82d6 | 422 | if (val & (PM2XXX_INT4_ITCVPHASE)) { |
01ec8c54 MJ |
423 | dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n"); |
424 | } | |
425 | ||
006f82d6 | 426 | if (val & (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) { |
01ec8c54 | 427 | pm2->failure_case = VPWR_OVV; |
006f82d6 | 428 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
429 | (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)); |
430 | dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n"); | |
431 | } | |
432 | ||
006f82d6 | 433 | if (val & (PM2XXX_INT4_S_ITBATTEMPCOLD | |
01ec8c54 | 434 | PM2XXX_INT4_S_ITBATTEMPHOT)) { |
006f82d6 OC |
435 | ret = pm2xxx_charger_batt_therm_mngt(pm2, val & |
436 | (PM2XXX_INT4_S_ITBATTEMPCOLD | | |
437 | PM2XXX_INT4_S_ITBATTEMPHOT)); | |
01ec8c54 MJ |
438 | dev_dbg(pm2->dev, "BTEMP is too Low/High\n"); |
439 | } | |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
006f82d6 | 444 | static int pm2_int_reg4(void *pm2_data, int val) |
01ec8c54 | 445 | { |
006f82d6 | 446 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
447 | int ret = 0; |
448 | ||
006f82d6 | 449 | if (val & PM2XXX_INT5_ITVSYSTEMOVV) { |
01ec8c54 | 450 | pm2->failure_case = VSYSTEM_OVV; |
006f82d6 | 451 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
452 | PM2XXX_INT5_ITVSYSTEMOVV); |
453 | dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n"); | |
454 | } | |
455 | ||
006f82d6 | 456 | if (val & (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
01ec8c54 MJ |
457 | PM2XXX_INT5_ITTHERMALWARNINGRISE | |
458 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
459 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) { | |
460 | dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n"); | |
006f82d6 | 461 | ret = pm2xxx_charger_die_therm_mngt(pm2, val & |
01ec8c54 MJ |
462 | (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
463 | PM2XXX_INT5_ITTHERMALWARNINGRISE | | |
464 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
465 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)); | |
466 | } | |
467 | ||
468 | return ret; | |
469 | } | |
470 | ||
006f82d6 | 471 | static int pm2_int_reg5(void *pm2_data, int val) |
01ec8c54 | 472 | { |
006f82d6 OC |
473 | struct pm2xxx_charger *pm2 = pm2_data; |
474 | int ret = 0; | |
475 | ||
006f82d6 | 476 | if (val & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) { |
01ec8c54 MJ |
477 | dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n"); |
478 | } | |
479 | ||
006f82d6 OC |
480 | if (val & (PM2XXX_INT6_ITVPWR2VALIDRISE | |
481 | PM2XXX_INT6_ITVPWR1VALIDRISE | | |
482 | PM2XXX_INT6_ITVPWR2VALIDFALL | | |
483 | PM2XXX_INT6_ITVPWR1VALIDFALL)) { | |
01ec8c54 MJ |
484 | dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n"); |
485 | } | |
486 | ||
006f82d6 | 487 | return ret; |
01ec8c54 MJ |
488 | } |
489 | ||
490 | static irqreturn_t pm2xxx_irq_int(int irq, void *data) | |
491 | { | |
492 | struct pm2xxx_charger *pm2 = data; | |
006f82d6 OC |
493 | struct pm2xxx_interrupts *interrupt = pm2->pm2_int; |
494 | int i; | |
01ec8c54 | 495 | |
f4095a0f B |
496 | do { |
497 | for (i = 0; i < PM2XXX_NUM_INT_REG; i++) { | |
498 | pm2xxx_reg_read(pm2, | |
006f82d6 OC |
499 | pm2xxx_interrupt_registers[i], |
500 | &(interrupt->reg[i])); | |
01ec8c54 | 501 | |
f4095a0f B |
502 | if (interrupt->reg[i] > 0) |
503 | interrupt->handler[i](pm2, interrupt->reg[i]); | |
504 | } | |
505 | } while (gpio_get_value(pm2->pdata->gpio_irq_number) == 0); | |
01ec8c54 MJ |
506 | |
507 | return IRQ_HANDLED; | |
508 | } | |
509 | ||
01ec8c54 MJ |
510 | static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2) |
511 | { | |
512 | int ret = 0; | |
513 | u8 val; | |
514 | ||
515 | if (pm2->ac.charger_connected && pm2->ac.charger_online) { | |
516 | ||
517 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val); | |
518 | if (ret < 0) { | |
519 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
520 | goto out; | |
521 | } | |
522 | ||
523 | if (val & PM2XXX_INT4_S_ITCVPHASE) | |
524 | ret = PM2XXX_CONST_VOLT; | |
525 | else | |
526 | ret = PM2XXX_CONST_CURR; | |
527 | } | |
528 | out: | |
529 | return ret; | |
530 | } | |
531 | ||
01ec8c54 MJ |
532 | static int pm2xxx_current_to_regval(int curr) |
533 | { | |
534 | int i; | |
535 | ||
536 | if (curr < pm2xxx_charger_current_map[0]) | |
537 | return 0; | |
538 | ||
539 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) { | |
540 | if (curr < pm2xxx_charger_current_map[i]) | |
541 | return (i - 1); | |
542 | } | |
543 | ||
544 | i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1; | |
545 | if (curr == pm2xxx_charger_current_map[i]) | |
546 | return i; | |
547 | else | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
551 | static int pm2xxx_voltage_to_regval(int curr) | |
552 | { | |
553 | int i; | |
554 | ||
555 | if (curr < pm2xxx_charger_voltage_map[0]) | |
556 | return 0; | |
557 | ||
558 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) { | |
559 | if (curr < pm2xxx_charger_voltage_map[i]) | |
560 | return i - 1; | |
561 | } | |
562 | ||
563 | i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1; | |
564 | if (curr == pm2xxx_charger_voltage_map[i]) | |
565 | return i; | |
566 | else | |
567 | return -EINVAL; | |
568 | } | |
569 | ||
570 | static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger, | |
571 | int ich_out) | |
572 | { | |
573 | int ret; | |
574 | int curr_index; | |
575 | struct pm2xxx_charger *pm2; | |
576 | u8 val; | |
577 | ||
578 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
579 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
580 | else | |
581 | return -ENXIO; | |
582 | ||
583 | curr_index = pm2xxx_current_to_regval(ich_out); | |
584 | if (curr_index < 0) { | |
585 | dev_err(pm2->dev, | |
006f82d6 | 586 | "Charger current too high, charging not started\n"); |
01ec8c54 MJ |
587 | return -ENXIO; |
588 | } | |
589 | ||
590 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
591 | if (ret >= 0) { | |
592 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
593 | val |= curr_index; | |
594 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
595 | if (ret < 0) { | |
596 | dev_err(pm2->dev, | |
597 | "%s write failed\n", __func__); | |
598 | } | |
599 | } | |
600 | else | |
601 | dev_err(pm2->dev, "%s read failed\n", __func__); | |
602 | ||
603 | return ret; | |
604 | } | |
605 | ||
606 | static int pm2xxx_charger_ac_get_property(struct power_supply *psy, | |
607 | enum power_supply_property psp, | |
608 | union power_supply_propval *val) | |
609 | { | |
610 | struct pm2xxx_charger *pm2; | |
611 | ||
612 | pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy)); | |
613 | ||
614 | switch (psp) { | |
615 | case POWER_SUPPLY_PROP_HEALTH: | |
616 | if (pm2->flags.mainextchnotok) | |
617 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
618 | else if (pm2->ac.wd_expired) | |
619 | val->intval = POWER_SUPPLY_HEALTH_DEAD; | |
620 | else if (pm2->flags.main_thermal_prot) | |
621 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
789ca7b4 RK |
622 | else if (pm2->flags.ovv) |
623 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
01ec8c54 MJ |
624 | else |
625 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
626 | break; | |
627 | case POWER_SUPPLY_PROP_ONLINE: | |
628 | val->intval = pm2->ac.charger_online; | |
629 | break; | |
630 | case POWER_SUPPLY_PROP_PRESENT: | |
631 | val->intval = pm2->ac.charger_connected; | |
632 | break; | |
01ec8c54 MJ |
633 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
634 | pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2); | |
635 | val->intval = pm2->ac.cv_active; | |
636 | break; | |
01ec8c54 MJ |
637 | default: |
638 | return -EINVAL; | |
639 | } | |
640 | return 0; | |
641 | } | |
642 | ||
643 | static int pm2xxx_charging_init(struct pm2xxx_charger *pm2) | |
644 | { | |
645 | int ret = 0; | |
646 | ||
647 | /* enable CC and CV watchdog */ | |
648 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3, | |
649 | (PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN)); | |
650 | if( ret < 0) | |
651 | return ret; | |
652 | ||
653 | /* enable precharge watchdog */ | |
654 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4, | |
655 | PM2XXX_CH_WD_PRECH_PHASE_60MIN); | |
656 | ||
006f82d6 OC |
657 | /* Disable auto timeout */ |
658 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG5, | |
659 | PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN); | |
660 | ||
661 | /* | |
662 | * EOC current level = 100mA | |
663 | * Precharge current level = 100mA | |
664 | * CC current level = 1000mA | |
665 | */ | |
666 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, | |
667 | (PM2XXX_DIR_CH_CC_CURRENT_1000MA | | |
668 | PM2XXX_CH_PRECH_CURRENT_100MA | | |
669 | PM2XXX_CH_EOC_CURRENT_100MA)); | |
670 | ||
671 | /* | |
672 | * recharge threshold = 3.8V | |
673 | * Precharge to CC threshold = 2.9V | |
674 | */ | |
675 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG7, | |
676 | (PM2XXX_CH_PRECH_VOL_2_9 | PM2XXX_CH_VRESUME_VOL_3_8)); | |
677 | ||
678 | /* float voltage charger level = 4.2V */ | |
679 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, | |
680 | PM2XXX_CH_VOLT_4_2); | |
681 | ||
682 | /* Voltage drop between VBAT and VSYS in HW charging = 300mV */ | |
683 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG9, | |
684 | (PM2XXX_CH_150MV_DROP_300MV | PM2XXX_CHARCHING_INFO_DIS | | |
685 | PM2XXX_CH_CC_REDUCED_CURRENT_IDENT | | |
686 | PM2XXX_CH_CC_MODEDROP_DIS)); | |
687 | ||
688 | /* Input charger level of over voltage = 10V */ | |
689 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR2, | |
690 | PM2XXX_VPWR2_OVV_10); | |
691 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR1, | |
692 | PM2XXX_VPWR1_OVV_10); | |
693 | ||
694 | /* Input charger drop */ | |
695 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR2, | |
696 | (PM2XXX_VPWR2_HW_OPT_DIS | PM2XXX_VPWR2_VALID_DIS | | |
697 | PM2XXX_VPWR2_DROP_DIS)); | |
698 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR1, | |
699 | (PM2XXX_VPWR1_HW_OPT_DIS | PM2XXX_VPWR1_VALID_DIS | | |
700 | PM2XXX_VPWR1_DROP_DIS)); | |
701 | ||
702 | /* Disable battery low monitoring */ | |
703 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_LOW_LEV_COMP_REG, | |
e41f39ea | 704 | PM2XXX_VBAT_LOW_MONITORING_ENA); |
006f82d6 OC |
705 | |
706 | /* Disable LED */ | |
707 | ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, | |
708 | PM2XXX_LED_SELECT_DIS); | |
709 | ||
01ec8c54 MJ |
710 | return ret; |
711 | } | |
712 | ||
713 | static int pm2xxx_charger_ac_en(struct ux500_charger *charger, | |
714 | int enable, int vset, int iset) | |
715 | { | |
716 | int ret; | |
717 | int volt_index; | |
718 | int curr_index; | |
719 | u8 val; | |
720 | ||
721 | struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
722 | ||
723 | if (enable) { | |
724 | if (!pm2->ac.charger_connected) { | |
725 | dev_dbg(pm2->dev, "AC charger not connected\n"); | |
726 | return -ENXIO; | |
727 | } | |
728 | ||
729 | dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset); | |
730 | if (!pm2->vddadc_en_ac) { | |
731 | regulator_enable(pm2->regu); | |
732 | pm2->vddadc_en_ac = true; | |
733 | } | |
734 | ||
735 | ret = pm2xxx_charging_init(pm2); | |
736 | if (ret < 0) { | |
737 | dev_err(pm2->dev, "%s charging init failed\n", | |
738 | __func__); | |
739 | goto error_occured; | |
740 | } | |
741 | ||
742 | volt_index = pm2xxx_voltage_to_regval(vset); | |
743 | curr_index = pm2xxx_current_to_regval(iset); | |
744 | ||
745 | if (volt_index < 0 || curr_index < 0) { | |
746 | dev_err(pm2->dev, | |
747 | "Charger voltage or current too high, " | |
748 | "charging not started\n"); | |
749 | return -ENXIO; | |
750 | } | |
751 | ||
752 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val); | |
e41f39ea RK |
753 | if (ret < 0) { |
754 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
755 | goto error_occured; | |
756 | } | |
757 | val &= ~PM2XXX_CH_VOLT_MASK; | |
758 | val |= volt_index; | |
759 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val); | |
760 | if (ret < 0) { | |
761 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
762 | goto error_occured; | |
01ec8c54 MJ |
763 | } |
764 | ||
765 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
e41f39ea RK |
766 | if (ret < 0) { |
767 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
768 | goto error_occured; | |
769 | } | |
770 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
771 | val |= curr_index; | |
772 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
773 | if (ret < 0) { | |
774 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
775 | goto error_occured; | |
01ec8c54 MJ |
776 | } |
777 | ||
778 | if (!pm2->bat->enable_overshoot) { | |
779 | ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val); | |
e41f39ea RK |
780 | if (ret < 0) { |
781 | dev_err(pm2->dev, "%s pm2xxx read failed\n", | |
782 | __func__); | |
783 | goto error_occured; | |
784 | } | |
785 | val |= PM2XXX_ANTI_OVERSHOOT_EN; | |
786 | ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, val); | |
787 | if (ret < 0) { | |
788 | dev_err(pm2->dev, "%s pm2xxx write failed\n", | |
789 | __func__); | |
790 | goto error_occured; | |
01ec8c54 | 791 | } |
01ec8c54 MJ |
792 | } |
793 | ||
794 | ret = pm2xxx_charging_enable_mngt(pm2); | |
e41f39ea RK |
795 | if (ret < 0) { |
796 | dev_err(pm2->dev, "Failed to enable" | |
797 | "pm2xxx ac charger\n"); | |
01ec8c54 MJ |
798 | goto error_occured; |
799 | } | |
800 | ||
801 | pm2->ac.charger_online = 1; | |
802 | } else { | |
803 | pm2->ac.charger_online = 0; | |
804 | pm2->ac.wd_expired = false; | |
805 | ||
806 | /* Disable regulator if enabled */ | |
807 | if (pm2->vddadc_en_ac) { | |
808 | regulator_disable(pm2->regu); | |
809 | pm2->vddadc_en_ac = false; | |
810 | } | |
811 | ||
812 | ret = pm2xxx_charging_disable_mngt(pm2); | |
e41f39ea RK |
813 | if (ret < 0) { |
814 | dev_err(pm2->dev, "failed to disable" | |
815 | "pm2xxx ac charger\n"); | |
816 | goto error_occured; | |
01ec8c54 MJ |
817 | } |
818 | ||
819 | dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n"); | |
820 | } | |
821 | power_supply_changed(&pm2->ac_chg.psy); | |
822 | ||
823 | error_occured: | |
824 | return ret; | |
825 | } | |
826 | ||
827 | static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger) | |
828 | { | |
829 | int ret; | |
830 | struct pm2xxx_charger *pm2; | |
831 | ||
832 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
833 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
834 | else | |
835 | return -ENXIO; | |
836 | ||
837 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER); | |
838 | if (ret) | |
839 | dev_err(pm2->dev, "Failed to kick WD!\n"); | |
840 | ||
841 | return ret; | |
842 | } | |
843 | ||
844 | static void pm2xxx_charger_ac_work(struct work_struct *work) | |
845 | { | |
846 | struct pm2xxx_charger *pm2 = container_of(work, | |
847 | struct pm2xxx_charger, ac_work); | |
848 | ||
849 | ||
850 | power_supply_changed(&pm2->ac_chg.psy); | |
851 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
852 | }; | |
853 | ||
789ca7b4 RK |
854 | static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work) |
855 | { | |
856 | u8 reg_value; | |
857 | ||
858 | struct pm2xxx_charger *pm2 = container_of(work, | |
859 | struct pm2xxx_charger, check_hw_failure_work.work); | |
860 | ||
861 | if (pm2->flags.ovv) { | |
862 | pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, ®_value); | |
863 | ||
864 | if (!(reg_value & (PM2XXX_INT4_S_ITVPWR1OVV | | |
865 | PM2XXX_INT4_S_ITVPWR2OVV))) { | |
866 | pm2->flags.ovv = false; | |
867 | power_supply_changed(&pm2->ac_chg.psy); | |
868 | } | |
869 | } | |
870 | ||
871 | /* If we still have a failure, schedule a new check */ | |
872 | if (pm2->flags.ovv) { | |
873 | queue_delayed_work(pm2->charger_wq, | |
874 | &pm2->check_hw_failure_work, round_jiffies(HZ)); | |
875 | } | |
876 | } | |
877 | ||
01ec8c54 MJ |
878 | static void pm2xxx_charger_check_main_thermal_prot_work( |
879 | struct work_struct *work) | |
880 | { | |
da9e83d4 RK |
881 | int ret; |
882 | u8 val; | |
883 | ||
884 | struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger, | |
885 | check_main_thermal_prot_work); | |
886 | ||
887 | /* Check if die temp warning is still active */ | |
888 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val); | |
889 | if (ret < 0) { | |
890 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
891 | return; | |
892 | } | |
893 | if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE | |
894 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE)) | |
895 | pm2->flags.main_thermal_prot = true; | |
896 | else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL | |
897 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL)) | |
898 | pm2->flags.main_thermal_prot = false; | |
899 | ||
900 | power_supply_changed(&pm2->ac_chg.psy); | |
901 | } | |
01ec8c54 | 902 | |
006f82d6 OC |
903 | static struct pm2xxx_interrupts pm2xxx_int = { |
904 | .handler[0] = pm2_int_reg0, | |
905 | .handler[1] = pm2_int_reg1, | |
906 | .handler[2] = pm2_int_reg2, | |
907 | .handler[3] = pm2_int_reg3, | |
908 | .handler[4] = pm2_int_reg4, | |
909 | .handler[5] = pm2_int_reg5, | |
910 | }; | |
911 | ||
01ec8c54 MJ |
912 | static struct pm2xxx_irq pm2xxx_charger_irq[] = { |
913 | {"PM2XXX_IRQ_INT", pm2xxx_irq_int}, | |
914 | }; | |
915 | ||
916 | static int pm2xxx_wall_charger_resume(struct i2c_client *i2c_client) | |
917 | { | |
49fddeec MBZ |
918 | struct pm2xxx_charger *pm2; |
919 | ||
920 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
921 | set_lpn_pin(pm2); | |
922 | ||
923 | /* If we still have a HW failure, schedule a new check */ | |
924 | if (pm2->flags.ovv) | |
925 | queue_delayed_work(pm2->charger_wq, | |
926 | &pm2->check_hw_failure_work, 0); | |
927 | ||
01ec8c54 MJ |
928 | return 0; |
929 | } | |
930 | ||
931 | static int pm2xxx_wall_charger_suspend(struct i2c_client *i2c_client, | |
932 | pm_message_t state) | |
933 | { | |
49fddeec MBZ |
934 | struct pm2xxx_charger *pm2; |
935 | ||
936 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
937 | clear_lpn_pin(pm2); | |
938 | ||
939 | /* Cancel any pending HW failure check */ | |
940 | if (delayed_work_pending(&pm2->check_hw_failure_work)) | |
941 | cancel_delayed_work(&pm2->check_hw_failure_work); | |
942 | ||
943 | flush_work(&pm2->ac_work); | |
944 | flush_work(&pm2->check_main_thermal_prot_work); | |
945 | ||
01ec8c54 MJ |
946 | return 0; |
947 | } | |
948 | ||
116c326e | 949 | static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client, |
01ec8c54 MJ |
950 | const struct i2c_device_id *id) |
951 | { | |
952 | struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data; | |
953 | struct pm2xxx_charger *pm2; | |
954 | int ret = 0; | |
955 | u8 val; | |
f4095a0f | 956 | int i; |
01ec8c54 MJ |
957 | |
958 | pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL); | |
959 | if (!pm2) { | |
960 | dev_err(pm2->dev, "pm2xxx_charger allocation failed\n"); | |
961 | return -ENOMEM; | |
962 | } | |
963 | ||
964 | /* get parent data */ | |
965 | pm2->dev = &i2c_client->dev; | |
966 | pm2->gpadc = ab8500_gpadc_get("ab8500-gpadc.0"); | |
967 | ||
006f82d6 OC |
968 | pm2->pm2_int = &pm2xxx_int; |
969 | ||
01ec8c54 MJ |
970 | /* get charger spcific platform data */ |
971 | if (!pl_data->wall_charger) { | |
972 | dev_err(pm2->dev, "no charger platform data supplied\n"); | |
973 | ret = -EINVAL; | |
974 | goto free_device_info; | |
975 | } | |
976 | ||
977 | pm2->pdata = pl_data->wall_charger; | |
978 | ||
979 | /* get battery specific platform data */ | |
980 | if (!pl_data->battery) { | |
981 | dev_err(pm2->dev, "no battery platform data supplied\n"); | |
982 | ret = -EINVAL; | |
983 | goto free_device_info; | |
984 | } | |
985 | ||
986 | pm2->bat = pl_data->battery; | |
987 | ||
3988043b LJ |
988 | /*get lpn GPIO from platform data*/ |
989 | if (!pm2->pdata->lpn_gpio) { | |
990 | dev_err(pm2->dev, "no lpn gpio data supplied\n"); | |
991 | ret = -EINVAL; | |
992 | goto free_device_info; | |
993 | } | |
994 | pm2->lpn_pin = pm2->pdata->lpn_gpio; | |
995 | ||
01ec8c54 MJ |
996 | if (!i2c_check_functionality(i2c_client->adapter, |
997 | I2C_FUNC_SMBUS_BYTE_DATA | | |
998 | I2C_FUNC_SMBUS_READ_WORD_DATA)) { | |
999 | ret = -ENODEV; | |
1000 | dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n"); | |
1001 | goto free_device_info; | |
1002 | } | |
1003 | ||
1004 | pm2->config.pm2xxx_i2c = i2c_client; | |
1005 | pm2->config.pm2xxx_id = (struct i2c_device_id *) id; | |
1006 | i2c_set_clientdata(i2c_client, pm2); | |
1007 | ||
1008 | /* AC supply */ | |
1009 | /* power_supply base class */ | |
1010 | pm2->ac_chg.psy.name = pm2->pdata->label; | |
1011 | pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; | |
1012 | pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props; | |
1013 | pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props); | |
1014 | pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property; | |
1015 | pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to; | |
1016 | pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants; | |
1017 | /* pm2xxx_charger sub-class */ | |
1018 | pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en; | |
1019 | pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick; | |
1020 | pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current; | |
1021 | pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[ | |
1022 | ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1]; | |
1023 | pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[ | |
1024 | ARRAY_SIZE(pm2xxx_charger_current_map) - 1]; | |
e07a5645 | 1025 | pm2->ac_chg.wdt_refresh = WD_KICK_INTERVAL; |
006f82d6 | 1026 | pm2->ac_chg.enabled = true; |
e07a5645 | 1027 | pm2->ac_chg.external = true; |
01ec8c54 MJ |
1028 | |
1029 | /* Create a work queue for the charger */ | |
1030 | pm2->charger_wq = | |
1031 | create_singlethread_workqueue("pm2xxx_charger_wq"); | |
1032 | if (pm2->charger_wq == NULL) { | |
1033 | dev_err(pm2->dev, "failed to create work queue\n"); | |
1034 | goto free_device_info; | |
1035 | } | |
1036 | ||
1037 | /* Init work for charger detection */ | |
1038 | INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work); | |
1039 | ||
1040 | /* Init work for checking HW status */ | |
1041 | INIT_WORK(&pm2->check_main_thermal_prot_work, | |
1042 | pm2xxx_charger_check_main_thermal_prot_work); | |
1043 | ||
789ca7b4 RK |
1044 | /* Init work for HW failure check */ |
1045 | INIT_DEFERRABLE_WORK(&pm2->check_hw_failure_work, | |
1046 | pm2xxx_charger_check_hw_failure_work); | |
1047 | ||
01ec8c54 MJ |
1048 | /* |
1049 | * VDD ADC supply needs to be enabled from this driver when there | |
1050 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW | |
1051 | * interrupts during charging | |
1052 | */ | |
1053 | pm2->regu = regulator_get(pm2->dev, "vddadc"); | |
1054 | if (IS_ERR(pm2->regu)) { | |
1055 | ret = PTR_ERR(pm2->regu); | |
1056 | dev_err(pm2->dev, "failed to get vddadc regulator\n"); | |
1057 | goto free_charger_wq; | |
1058 | } | |
1059 | ||
1060 | /* Register AC charger class */ | |
1061 | ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy); | |
1062 | if (ret) { | |
1063 | dev_err(pm2->dev, "failed to register AC charger\n"); | |
1064 | goto free_regulator; | |
1065 | } | |
1066 | ||
1067 | /* Register interrupts */ | |
f4095a0f B |
1068 | ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), |
1069 | NULL, | |
01ec8c54 MJ |
1070 | pm2xxx_charger_irq[0].isr, |
1071 | pm2->pdata->irq_type, | |
1072 | pm2xxx_charger_irq[0].name, pm2); | |
1073 | ||
1074 | if (ret != 0) { | |
1075 | dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n", | |
f4095a0f B |
1076 | pm2xxx_charger_irq[0].name, |
1077 | gpio_to_irq(pm2->pdata->gpio_irq_number), ret); | |
01ec8c54 MJ |
1078 | goto unregister_pm2xxx_charger; |
1079 | } | |
d4f510f6 | 1080 | /* pm interrupt can wake up system */ |
f4095a0f | 1081 | ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1082 | if (ret) { |
1083 | dev_err(pm2->dev, "failed to set irq wake\n"); | |
1084 | goto unregister_pm2xxx_interrupt; | |
1085 | } | |
01ec8c54 | 1086 | |
3988043b LJ |
1087 | mutex_init(&pm2->lock); |
1088 | ||
01ec8c54 | 1089 | /* |
3988043b LJ |
1090 | * Charger detection mechanism requires pulling up the LPN pin |
1091 | * while i2c communication if Charger is not connected | |
1092 | * LPN pin of PM2301 is GPIO60 of AB9540 | |
01ec8c54 | 1093 | */ |
3988043b LJ |
1094 | ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio"); |
1095 | if (ret < 0) { | |
1096 | dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n"); | |
d4f510f6 | 1097 | goto disable_pm2_irq_wake; |
3988043b LJ |
1098 | } |
1099 | ret = gpio_direction_output(pm2->lpn_pin, 0); | |
1100 | if (ret < 0) { | |
1101 | dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n"); | |
1102 | goto free_gpio; | |
1103 | } | |
1104 | ||
49fddeec | 1105 | set_lpn_pin(pm2); |
f4095a0f B |
1106 | |
1107 | /* read interrupt registers */ | |
1108 | for (i = 0; i < PM2XXX_NUM_INT_REG; i++) | |
1109 | pm2xxx_reg_read(pm2, | |
1110 | pm2xxx_interrupt_registers[i], | |
1111 | &val); | |
1112 | ||
01ec8c54 MJ |
1113 | ret = pm2xxx_charger_detection(pm2, &val); |
1114 | ||
1115 | if ((ret == 0) && val) { | |
1116 | pm2->ac.charger_connected = 1; | |
54fbbb62 PF |
1117 | ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON, |
1118 | AB8500_MAIN_CH_DET); | |
01ec8c54 MJ |
1119 | pm2->ac_conn = true; |
1120 | power_supply_changed(&pm2->ac_chg.psy); | |
1121 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | ||
3988043b LJ |
1126 | free_gpio: |
1127 | gpio_free(pm2->lpn_pin); | |
d4f510f6 | 1128 | disable_pm2_irq_wake: |
f4095a0f | 1129 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1130 | unregister_pm2xxx_interrupt: |
1131 | /* disable interrupt */ | |
f4095a0f | 1132 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1133 | unregister_pm2xxx_charger: |
1134 | /* unregister power supply */ | |
1135 | power_supply_unregister(&pm2->ac_chg.psy); | |
1136 | free_regulator: | |
1137 | /* disable the regulator */ | |
1138 | regulator_put(pm2->regu); | |
1139 | free_charger_wq: | |
1140 | destroy_workqueue(pm2->charger_wq); | |
1141 | free_device_info: | |
1142 | kfree(pm2); | |
d4f510f6 | 1143 | |
01ec8c54 MJ |
1144 | return ret; |
1145 | } | |
1146 | ||
116c326e | 1147 | static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client) |
01ec8c54 MJ |
1148 | { |
1149 | struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client); | |
1150 | ||
1151 | /* Disable AC charging */ | |
1152 | pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0); | |
1153 | ||
d4f510f6 | 1154 | /* Disable wake by pm interrupt */ |
f4095a0f | 1155 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 | 1156 | |
01ec8c54 | 1157 | /* Disable interrupts */ |
f4095a0f | 1158 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1159 | |
1160 | /* Delete the work queue */ | |
1161 | destroy_workqueue(pm2->charger_wq); | |
1162 | ||
1163 | flush_scheduled_work(); | |
1164 | ||
1165 | /* disable the regulator */ | |
1166 | regulator_put(pm2->regu); | |
1167 | ||
1168 | power_supply_unregister(&pm2->ac_chg.psy); | |
1169 | ||
3988043b LJ |
1170 | gpio_free(pm2->lpn_pin); |
1171 | ||
01ec8c54 MJ |
1172 | kfree(pm2); |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | static const struct i2c_device_id pm2xxx_id[] = { | |
1178 | { "pm2301", 0 }, | |
1179 | { } | |
1180 | }; | |
1181 | ||
1182 | MODULE_DEVICE_TABLE(i2c, pm2xxx_id); | |
1183 | ||
1184 | static struct i2c_driver pm2xxx_charger_driver = { | |
1185 | .probe = pm2xxx_wall_charger_probe, | |
116c326e | 1186 | .remove = pm2xxx_wall_charger_remove, |
01ec8c54 MJ |
1187 | .suspend = pm2xxx_wall_charger_suspend, |
1188 | .resume = pm2xxx_wall_charger_resume, | |
1189 | .driver = { | |
1190 | .name = "pm2xxx-wall_charger", | |
1191 | .owner = THIS_MODULE, | |
1192 | }, | |
1193 | .id_table = pm2xxx_id, | |
1194 | }; | |
1195 | ||
1196 | static int __init pm2xxx_charger_init(void) | |
1197 | { | |
1198 | return i2c_add_driver(&pm2xxx_charger_driver); | |
1199 | } | |
1200 | ||
1201 | static void __exit pm2xxx_charger_exit(void) | |
1202 | { | |
1203 | i2c_del_driver(&pm2xxx_charger_driver); | |
1204 | } | |
1205 | ||
1206 | subsys_initcall_sync(pm2xxx_charger_init); | |
1207 | module_exit(pm2xxx_charger_exit); | |
1208 | ||
1209 | MODULE_LICENSE("GPL v2"); | |
1210 | MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay"); | |
1211 | MODULE_ALIAS("platform:pm2xxx-charger"); | |
1212 | MODULE_DESCRIPTION("PM2xxx charger management driver"); |