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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> | |
01ec8c54 MJ |
19 | #include <linux/regulator/consumer.h> |
20 | #include <linux/err.h> | |
21 | #include <linux/i2c.h> | |
22 | #include <linux/workqueue.h> | |
01ec8c54 MJ |
23 | #include <linux/mfd/abx500/ab8500.h> |
24 | #include <linux/mfd/abx500/ab8500-bm.h> | |
01ec8c54 MJ |
25 | #include <linux/mfd/abx500/ux500_chargalg.h> |
26 | #include <linux/pm2301_charger.h> | |
3988043b | 27 | #include <linux/gpio.h> |
aee2b846 | 28 | #include <linux/pm_runtime.h> |
01ec8c54 | 29 | |
2fa5b0f4 | 30 | #include "pm2301_charger.h" |
01ec8c54 MJ |
31 | |
32 | #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \ | |
33 | struct pm2xxx_charger, ac_chg) | |
49fddeec MBZ |
34 | #define SLEEP_MIN 50 |
35 | #define SLEEP_MAX 100 | |
aee2b846 | 36 | #define PM2XXX_AUTOSUSPEND_DELAY 500 |
01ec8c54 MJ |
37 | |
38 | static int pm2xxx_interrupt_registers[] = { | |
39 | PM2XXX_REG_INT1, | |
40 | PM2XXX_REG_INT2, | |
41 | PM2XXX_REG_INT3, | |
42 | PM2XXX_REG_INT4, | |
43 | PM2XXX_REG_INT5, | |
44 | PM2XXX_REG_INT6, | |
45 | }; | |
46 | ||
01ec8c54 MJ |
47 | static enum power_supply_property pm2xxx_charger_ac_props[] = { |
48 | POWER_SUPPLY_PROP_HEALTH, | |
49 | POWER_SUPPLY_PROP_PRESENT, | |
50 | POWER_SUPPLY_PROP_ONLINE, | |
01ec8c54 | 51 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
01ec8c54 MJ |
52 | }; |
53 | ||
54 | static int pm2xxx_charger_voltage_map[] = { | |
55 | 3500, | |
56 | 3525, | |
57 | 3550, | |
58 | 3575, | |
59 | 3600, | |
60 | 3625, | |
61 | 3650, | |
62 | 3675, | |
63 | 3700, | |
64 | 3725, | |
65 | 3750, | |
66 | 3775, | |
67 | 3800, | |
68 | 3825, | |
69 | 3850, | |
70 | 3875, | |
71 | 3900, | |
72 | 3925, | |
73 | 3950, | |
74 | 3975, | |
75 | 4000, | |
76 | 4025, | |
77 | 4050, | |
78 | 4075, | |
79 | 4100, | |
80 | 4125, | |
81 | 4150, | |
82 | 4175, | |
83 | 4200, | |
84 | 4225, | |
85 | 4250, | |
86 | 4275, | |
87 | 4300, | |
88 | }; | |
89 | ||
90 | static int pm2xxx_charger_current_map[] = { | |
91 | 200, | |
92 | 200, | |
93 | 400, | |
94 | 600, | |
95 | 800, | |
96 | 1000, | |
97 | 1200, | |
98 | 1400, | |
99 | 1600, | |
100 | 1800, | |
101 | 2000, | |
102 | 2200, | |
103 | 2400, | |
104 | 2600, | |
105 | 2800, | |
106 | 3000, | |
107 | }; | |
108 | ||
01ec8c54 MJ |
109 | static const struct i2c_device_id pm2xxx_ident[] = { |
110 | { "pm2301", 0 }, | |
111 | { } | |
112 | }; | |
113 | ||
3988043b LJ |
114 | static void set_lpn_pin(struct pm2xxx_charger *pm2) |
115 | { | |
a21e22f2 | 116 | if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) { |
117 | gpio_set_value(pm2->lpn_pin, 1); | |
118 | usleep_range(SLEEP_MIN, SLEEP_MAX); | |
119 | } | |
3988043b LJ |
120 | } |
121 | ||
122 | static void clear_lpn_pin(struct pm2xxx_charger *pm2) | |
123 | { | |
a21e22f2 | 124 | if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) |
125 | gpio_set_value(pm2->lpn_pin, 0); | |
3988043b LJ |
126 | } |
127 | ||
01ec8c54 MJ |
128 | static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val) |
129 | { | |
130 | int ret; | |
3988043b LJ |
131 | /* |
132 | * When AC adaptor is unplugged, the host | |
133 | * must put LPN high to be able to | |
134 | * communicate by I2C with PM2301 | |
135 | * and receive I2C "acknowledge" from PM2301. | |
136 | */ | |
137 | mutex_lock(&pm2->lock); | |
01ec8c54 MJ |
138 | |
139 | ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
140 | 1, val); | |
141 | if (ret < 0) | |
142 | dev_err(pm2->dev, "Error reading register at 0x%x\n", reg); | |
e41f39ea RK |
143 | else |
144 | ret = 0; | |
3988043b | 145 | mutex_unlock(&pm2->lock); |
01ec8c54 MJ |
146 | |
147 | return ret; | |
148 | } | |
149 | ||
150 | static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val) | |
151 | { | |
152 | int ret; | |
3988043b LJ |
153 | /* |
154 | * When AC adaptor is unplugged, the host | |
155 | * must put LPN high to be able to | |
156 | * communicate by I2C with PM2301 | |
157 | * and receive I2C "acknowledge" from PM2301. | |
158 | */ | |
159 | mutex_lock(&pm2->lock); | |
01ec8c54 MJ |
160 | |
161 | ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
162 | 1, &val); | |
163 | if (ret < 0) | |
164 | dev_err(pm2->dev, "Error writing register at 0x%x\n", reg); | |
e41f39ea RK |
165 | else |
166 | ret = 0; | |
3988043b | 167 | mutex_unlock(&pm2->lock); |
01ec8c54 MJ |
168 | |
169 | return ret; | |
170 | } | |
171 | ||
172 | static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2) | |
173 | { | |
174 | int ret; | |
175 | ||
176 | /* Enable charging */ | |
177 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
178 | (PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA)); | |
179 | ||
180 | return ret; | |
181 | } | |
182 | ||
183 | static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2) | |
184 | { | |
185 | int ret; | |
186 | ||
584f9703 RK |
187 | /* Disable SW EOC ctrl */ |
188 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, PM2XXX_SWCTRL_HW); | |
189 | if (ret < 0) { | |
190 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
191 | return ret; | |
192 | } | |
193 | ||
01ec8c54 MJ |
194 | /* Disable charging */ |
195 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
196 | (PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS)); | |
584f9703 RK |
197 | if (ret < 0) { |
198 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
199 | return ret; | |
200 | } | |
01ec8c54 | 201 | |
584f9703 | 202 | return 0; |
01ec8c54 MJ |
203 | } |
204 | ||
205 | static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val) | |
206 | { | |
207 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
212 | ||
213 | int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val) | |
214 | { | |
215 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val) | |
221 | { | |
789ca7b4 RK |
222 | dev_err(pm2->dev, "Overvoltage detected\n"); |
223 | pm2->flags.ovv = true; | |
224 | power_supply_changed(&pm2->ac_chg.psy); | |
01ec8c54 | 225 | |
789ca7b4 RK |
226 | /* Schedule a new HW failure check */ |
227 | queue_delayed_work(pm2->charger_wq, &pm2->check_hw_failure_work, 0); | |
01ec8c54 | 228 | |
789ca7b4 | 229 | return 0; |
01ec8c54 MJ |
230 | } |
231 | ||
232 | static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val) | |
233 | { | |
234 | dev_dbg(pm2->dev , "20 minutes watchdog occured\n"); | |
235 | ||
236 | pm2->ac.wd_expired = true; | |
237 | power_supply_changed(&pm2->ac_chg.psy); | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
242 | static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val) | |
243 | { | |
584f9703 RK |
244 | int ret; |
245 | ||
01ec8c54 MJ |
246 | switch (val) { |
247 | case PM2XXX_INT1_ITVBATLOWR: | |
248 | dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n"); | |
584f9703 RK |
249 | /* Enable SW EOC ctrl */ |
250 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
251 | PM2XXX_SWCTRL_SW); | |
252 | if (ret < 0) { | |
253 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
254 | return ret; | |
255 | } | |
01ec8c54 MJ |
256 | break; |
257 | ||
258 | case PM2XXX_INT1_ITVBATLOWF: | |
259 | dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n"); | |
584f9703 RK |
260 | /* Disable SW EOC ctrl */ |
261 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
262 | PM2XXX_SWCTRL_HW); | |
263 | if (ret < 0) { | |
264 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
265 | return ret; | |
266 | } | |
01ec8c54 MJ |
267 | break; |
268 | ||
269 | default: | |
270 | dev_err(pm2->dev, "Unknown VBAT level\n"); | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val) | |
277 | { | |
278 | dev_dbg(pm2->dev, "battery disconnected\n"); | |
279 | ||
006f82d6 | 280 | return 0; |
01ec8c54 MJ |
281 | } |
282 | ||
283 | static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val) | |
284 | { | |
e41f39ea | 285 | int ret; |
01ec8c54 MJ |
286 | |
287 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val); | |
288 | ||
289 | if (ret < 0) { | |
290 | dev_err(pm2->dev, "Charger detection failed\n"); | |
291 | goto out; | |
292 | } | |
293 | ||
294 | *val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG); | |
e41f39ea | 295 | |
01ec8c54 MJ |
296 | out: |
297 | return ret; | |
298 | } | |
299 | ||
300 | static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val) | |
301 | { | |
302 | ||
303 | int ret; | |
304 | u8 read_val; | |
305 | ||
306 | /* | |
307 | * Since we can't be sure that the events are received | |
308 | * synchronously, we have the check if the main charger is | |
309 | * connected by reading the interrupt source register. | |
310 | */ | |
311 | ret = pm2xxx_charger_detection(pm2, &read_val); | |
312 | ||
313 | if ((ret == 0) && read_val) { | |
314 | pm2->ac.charger_connected = 1; | |
315 | pm2->ac_conn = true; | |
316 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
317 | } | |
318 | ||
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
323 | static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2, | |
324 | int val) | |
325 | { | |
326 | pm2->ac.charger_connected = 0; | |
327 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
328 | ||
329 | return 0; | |
330 | } | |
331 | ||
006f82d6 | 332 | static int pm2_int_reg0(void *pm2_data, int val) |
01ec8c54 | 333 | { |
006f82d6 | 334 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
335 | int ret = 0; |
336 | ||
584f9703 RK |
337 | if (val & PM2XXX_INT1_ITVBATLOWR) { |
338 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
339 | PM2XXX_INT1_ITVBATLOWR); | |
340 | if (ret < 0) | |
341 | goto out; | |
342 | } | |
343 | ||
344 | if (val & PM2XXX_INT1_ITVBATLOWF) { | |
345 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
346 | PM2XXX_INT1_ITVBATLOWF); | |
347 | if (ret < 0) | |
348 | goto out; | |
01ec8c54 MJ |
349 | } |
350 | ||
006f82d6 | 351 | if (val & PM2XXX_INT1_ITVBATDISCONNECT) { |
01ec8c54 MJ |
352 | ret = pm2xxx_charger_bat_disc_mngt(pm2, |
353 | PM2XXX_INT1_ITVBATDISCONNECT); | |
584f9703 RK |
354 | if (ret < 0) |
355 | goto out; | |
01ec8c54 | 356 | } |
584f9703 | 357 | out: |
01ec8c54 MJ |
358 | return ret; |
359 | } | |
360 | ||
006f82d6 | 361 | static int pm2_int_reg1(void *pm2_data, int val) |
01ec8c54 | 362 | { |
006f82d6 | 363 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
364 | int ret = 0; |
365 | ||
006f82d6 | 366 | if (val & (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) { |
01ec8c54 | 367 | dev_dbg(pm2->dev , "Main charger plugged\n"); |
006f82d6 | 368 | ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, val & |
01ec8c54 MJ |
369 | (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)); |
370 | } | |
371 | ||
006f82d6 | 372 | if (val & |
01ec8c54 MJ |
373 | (PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) { |
374 | dev_dbg(pm2->dev , "Main charger unplugged\n"); | |
006f82d6 | 375 | ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, val & |
01ec8c54 MJ |
376 | (PM2XXX_INT2_ITVPWR1UNPLUG | |
377 | PM2XXX_INT2_ITVPWR2UNPLUG)); | |
378 | } | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
006f82d6 | 383 | static int pm2_int_reg2(void *pm2_data, int val) |
01ec8c54 | 384 | { |
006f82d6 | 385 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
386 | int ret = 0; |
387 | ||
006f82d6 OC |
388 | if (val & PM2XXX_INT3_ITAUTOTIMEOUTWD) |
389 | ret = pm2xxx_charger_wd_exp_mngt(pm2, val); | |
01ec8c54 | 390 | |
006f82d6 | 391 | if (val & (PM2XXX_INT3_ITCHPRECHARGEWD | |
01ec8c54 MJ |
392 | PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) { |
393 | dev_dbg(pm2->dev, | |
394 | "Watchdog occured for precharge, CC and CV charge\n"); | |
395 | } | |
396 | ||
397 | return ret; | |
398 | } | |
399 | ||
006f82d6 | 400 | static int pm2_int_reg3(void *pm2_data, int val) |
01ec8c54 | 401 | { |
006f82d6 | 402 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
403 | int ret = 0; |
404 | ||
006f82d6 | 405 | if (val & (PM2XXX_INT4_ITCHARGINGON)) { |
01ec8c54 MJ |
406 | dev_dbg(pm2->dev , |
407 | "chargind operation has started\n"); | |
408 | } | |
409 | ||
006f82d6 | 410 | if (val & (PM2XXX_INT4_ITVRESUME)) { |
01ec8c54 MJ |
411 | dev_dbg(pm2->dev, |
412 | "battery discharged down to VResume threshold\n"); | |
413 | } | |
414 | ||
006f82d6 | 415 | if (val & (PM2XXX_INT4_ITBATTFULL)) { |
01ec8c54 MJ |
416 | dev_dbg(pm2->dev , "battery fully detected\n"); |
417 | } | |
418 | ||
006f82d6 | 419 | if (val & (PM2XXX_INT4_ITCVPHASE)) { |
01ec8c54 MJ |
420 | dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n"); |
421 | } | |
422 | ||
006f82d6 | 423 | if (val & (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) { |
01ec8c54 | 424 | pm2->failure_case = VPWR_OVV; |
006f82d6 | 425 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
426 | (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)); |
427 | dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n"); | |
428 | } | |
429 | ||
006f82d6 | 430 | if (val & (PM2XXX_INT4_S_ITBATTEMPCOLD | |
01ec8c54 | 431 | PM2XXX_INT4_S_ITBATTEMPHOT)) { |
006f82d6 OC |
432 | ret = pm2xxx_charger_batt_therm_mngt(pm2, val & |
433 | (PM2XXX_INT4_S_ITBATTEMPCOLD | | |
434 | PM2XXX_INT4_S_ITBATTEMPHOT)); | |
01ec8c54 MJ |
435 | dev_dbg(pm2->dev, "BTEMP is too Low/High\n"); |
436 | } | |
437 | ||
438 | return ret; | |
439 | } | |
440 | ||
006f82d6 | 441 | static int pm2_int_reg4(void *pm2_data, int val) |
01ec8c54 | 442 | { |
006f82d6 | 443 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
444 | int ret = 0; |
445 | ||
006f82d6 | 446 | if (val & PM2XXX_INT5_ITVSYSTEMOVV) { |
01ec8c54 | 447 | pm2->failure_case = VSYSTEM_OVV; |
006f82d6 | 448 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
449 | PM2XXX_INT5_ITVSYSTEMOVV); |
450 | dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n"); | |
451 | } | |
452 | ||
006f82d6 | 453 | if (val & (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
01ec8c54 MJ |
454 | PM2XXX_INT5_ITTHERMALWARNINGRISE | |
455 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
456 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) { | |
457 | dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n"); | |
006f82d6 | 458 | ret = pm2xxx_charger_die_therm_mngt(pm2, val & |
01ec8c54 MJ |
459 | (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
460 | PM2XXX_INT5_ITTHERMALWARNINGRISE | | |
461 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
462 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)); | |
463 | } | |
464 | ||
465 | return ret; | |
466 | } | |
467 | ||
006f82d6 | 468 | static int pm2_int_reg5(void *pm2_data, int val) |
01ec8c54 | 469 | { |
006f82d6 OC |
470 | struct pm2xxx_charger *pm2 = pm2_data; |
471 | int ret = 0; | |
472 | ||
006f82d6 | 473 | if (val & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) { |
01ec8c54 MJ |
474 | dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n"); |
475 | } | |
476 | ||
006f82d6 OC |
477 | if (val & (PM2XXX_INT6_ITVPWR2VALIDRISE | |
478 | PM2XXX_INT6_ITVPWR1VALIDRISE | | |
479 | PM2XXX_INT6_ITVPWR2VALIDFALL | | |
480 | PM2XXX_INT6_ITVPWR1VALIDFALL)) { | |
01ec8c54 MJ |
481 | dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n"); |
482 | } | |
483 | ||
006f82d6 | 484 | return ret; |
01ec8c54 MJ |
485 | } |
486 | ||
487 | static irqreturn_t pm2xxx_irq_int(int irq, void *data) | |
488 | { | |
489 | struct pm2xxx_charger *pm2 = data; | |
006f82d6 OC |
490 | struct pm2xxx_interrupts *interrupt = pm2->pm2_int; |
491 | int i; | |
01ec8c54 | 492 | |
aee2b846 LJ |
493 | /* wake up the device */ |
494 | pm_runtime_get_sync(pm2->dev); | |
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 | 506 | |
aee2b846 LJ |
507 | pm_runtime_mark_last_busy(pm2->dev); |
508 | pm_runtime_put_autosuspend(pm2->dev); | |
509 | ||
01ec8c54 MJ |
510 | return IRQ_HANDLED; |
511 | } | |
512 | ||
01ec8c54 MJ |
513 | static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2) |
514 | { | |
515 | int ret = 0; | |
516 | u8 val; | |
517 | ||
518 | if (pm2->ac.charger_connected && pm2->ac.charger_online) { | |
519 | ||
520 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val); | |
521 | if (ret < 0) { | |
522 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
523 | goto out; | |
524 | } | |
525 | ||
526 | if (val & PM2XXX_INT4_S_ITCVPHASE) | |
527 | ret = PM2XXX_CONST_VOLT; | |
528 | else | |
529 | ret = PM2XXX_CONST_CURR; | |
530 | } | |
531 | out: | |
532 | return ret; | |
533 | } | |
534 | ||
01ec8c54 MJ |
535 | static int pm2xxx_current_to_regval(int curr) |
536 | { | |
537 | int i; | |
538 | ||
539 | if (curr < pm2xxx_charger_current_map[0]) | |
540 | return 0; | |
541 | ||
542 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) { | |
543 | if (curr < pm2xxx_charger_current_map[i]) | |
544 | return (i - 1); | |
545 | } | |
546 | ||
547 | i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1; | |
548 | if (curr == pm2xxx_charger_current_map[i]) | |
549 | return i; | |
550 | else | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | static int pm2xxx_voltage_to_regval(int curr) | |
555 | { | |
556 | int i; | |
557 | ||
558 | if (curr < pm2xxx_charger_voltage_map[0]) | |
559 | return 0; | |
560 | ||
561 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) { | |
562 | if (curr < pm2xxx_charger_voltage_map[i]) | |
563 | return i - 1; | |
564 | } | |
565 | ||
566 | i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1; | |
567 | if (curr == pm2xxx_charger_voltage_map[i]) | |
568 | return i; | |
569 | else | |
570 | return -EINVAL; | |
571 | } | |
572 | ||
573 | static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger, | |
574 | int ich_out) | |
575 | { | |
576 | int ret; | |
577 | int curr_index; | |
578 | struct pm2xxx_charger *pm2; | |
579 | u8 val; | |
580 | ||
581 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
582 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
583 | else | |
584 | return -ENXIO; | |
585 | ||
586 | curr_index = pm2xxx_current_to_regval(ich_out); | |
587 | if (curr_index < 0) { | |
588 | dev_err(pm2->dev, | |
006f82d6 | 589 | "Charger current too high, charging not started\n"); |
01ec8c54 MJ |
590 | return -ENXIO; |
591 | } | |
592 | ||
593 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
594 | if (ret >= 0) { | |
595 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
596 | val |= curr_index; | |
597 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
598 | if (ret < 0) { | |
599 | dev_err(pm2->dev, | |
600 | "%s write failed\n", __func__); | |
601 | } | |
602 | } | |
603 | else | |
604 | dev_err(pm2->dev, "%s read failed\n", __func__); | |
605 | ||
606 | return ret; | |
607 | } | |
608 | ||
609 | static int pm2xxx_charger_ac_get_property(struct power_supply *psy, | |
610 | enum power_supply_property psp, | |
611 | union power_supply_propval *val) | |
612 | { | |
613 | struct pm2xxx_charger *pm2; | |
614 | ||
615 | pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy)); | |
616 | ||
617 | switch (psp) { | |
618 | case POWER_SUPPLY_PROP_HEALTH: | |
619 | if (pm2->flags.mainextchnotok) | |
620 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
621 | else if (pm2->ac.wd_expired) | |
622 | val->intval = POWER_SUPPLY_HEALTH_DEAD; | |
623 | else if (pm2->flags.main_thermal_prot) | |
624 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
789ca7b4 RK |
625 | else if (pm2->flags.ovv) |
626 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
01ec8c54 MJ |
627 | else |
628 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
629 | break; | |
630 | case POWER_SUPPLY_PROP_ONLINE: | |
631 | val->intval = pm2->ac.charger_online; | |
632 | break; | |
633 | case POWER_SUPPLY_PROP_PRESENT: | |
634 | val->intval = pm2->ac.charger_connected; | |
635 | break; | |
01ec8c54 MJ |
636 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
637 | pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2); | |
638 | val->intval = pm2->ac.cv_active; | |
639 | break; | |
01ec8c54 MJ |
640 | default: |
641 | return -EINVAL; | |
642 | } | |
643 | return 0; | |
644 | } | |
645 | ||
646 | static int pm2xxx_charging_init(struct pm2xxx_charger *pm2) | |
647 | { | |
648 | int ret = 0; | |
649 | ||
650 | /* enable CC and CV watchdog */ | |
651 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3, | |
652 | (PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN)); | |
653 | if( ret < 0) | |
654 | return ret; | |
655 | ||
656 | /* enable precharge watchdog */ | |
657 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4, | |
658 | PM2XXX_CH_WD_PRECH_PHASE_60MIN); | |
659 | ||
006f82d6 OC |
660 | /* Disable auto timeout */ |
661 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG5, | |
662 | PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN); | |
663 | ||
664 | /* | |
665 | * EOC current level = 100mA | |
666 | * Precharge current level = 100mA | |
667 | * CC current level = 1000mA | |
668 | */ | |
669 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, | |
670 | (PM2XXX_DIR_CH_CC_CURRENT_1000MA | | |
671 | PM2XXX_CH_PRECH_CURRENT_100MA | | |
672 | PM2XXX_CH_EOC_CURRENT_100MA)); | |
673 | ||
674 | /* | |
675 | * recharge threshold = 3.8V | |
676 | * Precharge to CC threshold = 2.9V | |
677 | */ | |
678 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG7, | |
679 | (PM2XXX_CH_PRECH_VOL_2_9 | PM2XXX_CH_VRESUME_VOL_3_8)); | |
680 | ||
681 | /* float voltage charger level = 4.2V */ | |
682 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, | |
683 | PM2XXX_CH_VOLT_4_2); | |
684 | ||
685 | /* Voltage drop between VBAT and VSYS in HW charging = 300mV */ | |
686 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG9, | |
687 | (PM2XXX_CH_150MV_DROP_300MV | PM2XXX_CHARCHING_INFO_DIS | | |
688 | PM2XXX_CH_CC_REDUCED_CURRENT_IDENT | | |
689 | PM2XXX_CH_CC_MODEDROP_DIS)); | |
690 | ||
691 | /* Input charger level of over voltage = 10V */ | |
692 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR2, | |
693 | PM2XXX_VPWR2_OVV_10); | |
694 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR1, | |
695 | PM2XXX_VPWR1_OVV_10); | |
696 | ||
697 | /* Input charger drop */ | |
698 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR2, | |
699 | (PM2XXX_VPWR2_HW_OPT_DIS | PM2XXX_VPWR2_VALID_DIS | | |
700 | PM2XXX_VPWR2_DROP_DIS)); | |
701 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR1, | |
702 | (PM2XXX_VPWR1_HW_OPT_DIS | PM2XXX_VPWR1_VALID_DIS | | |
703 | PM2XXX_VPWR1_DROP_DIS)); | |
704 | ||
705 | /* Disable battery low monitoring */ | |
706 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_LOW_LEV_COMP_REG, | |
e41f39ea | 707 | PM2XXX_VBAT_LOW_MONITORING_ENA); |
006f82d6 | 708 | |
01ec8c54 MJ |
709 | return ret; |
710 | } | |
711 | ||
712 | static int pm2xxx_charger_ac_en(struct ux500_charger *charger, | |
713 | int enable, int vset, int iset) | |
714 | { | |
715 | int ret; | |
716 | int volt_index; | |
717 | int curr_index; | |
718 | u8 val; | |
719 | ||
720 | struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
721 | ||
722 | if (enable) { | |
723 | if (!pm2->ac.charger_connected) { | |
724 | dev_dbg(pm2->dev, "AC charger not connected\n"); | |
725 | return -ENXIO; | |
726 | } | |
727 | ||
728 | dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset); | |
729 | if (!pm2->vddadc_en_ac) { | |
730 | regulator_enable(pm2->regu); | |
731 | pm2->vddadc_en_ac = true; | |
732 | } | |
733 | ||
734 | ret = pm2xxx_charging_init(pm2); | |
735 | if (ret < 0) { | |
736 | dev_err(pm2->dev, "%s charging init failed\n", | |
737 | __func__); | |
738 | goto error_occured; | |
739 | } | |
740 | ||
741 | volt_index = pm2xxx_voltage_to_regval(vset); | |
742 | curr_index = pm2xxx_current_to_regval(iset); | |
743 | ||
744 | if (volt_index < 0 || curr_index < 0) { | |
745 | dev_err(pm2->dev, | |
746 | "Charger voltage or current too high, " | |
747 | "charging not started\n"); | |
748 | return -ENXIO; | |
749 | } | |
750 | ||
751 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val); | |
e41f39ea RK |
752 | if (ret < 0) { |
753 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
754 | goto error_occured; | |
755 | } | |
756 | val &= ~PM2XXX_CH_VOLT_MASK; | |
757 | val |= volt_index; | |
758 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val); | |
759 | if (ret < 0) { | |
760 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
761 | goto error_occured; | |
01ec8c54 MJ |
762 | } |
763 | ||
764 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
e41f39ea RK |
765 | if (ret < 0) { |
766 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
767 | goto error_occured; | |
768 | } | |
769 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
770 | val |= curr_index; | |
771 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
772 | if (ret < 0) { | |
773 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
774 | goto error_occured; | |
01ec8c54 MJ |
775 | } |
776 | ||
777 | if (!pm2->bat->enable_overshoot) { | |
778 | ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val); | |
e41f39ea RK |
779 | if (ret < 0) { |
780 | dev_err(pm2->dev, "%s pm2xxx read failed\n", | |
781 | __func__); | |
782 | goto error_occured; | |
783 | } | |
784 | val |= PM2XXX_ANTI_OVERSHOOT_EN; | |
785 | ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, val); | |
786 | if (ret < 0) { | |
787 | dev_err(pm2->dev, "%s pm2xxx write failed\n", | |
788 | __func__); | |
789 | goto error_occured; | |
01ec8c54 | 790 | } |
01ec8c54 MJ |
791 | } |
792 | ||
793 | ret = pm2xxx_charging_enable_mngt(pm2); | |
e41f39ea RK |
794 | if (ret < 0) { |
795 | dev_err(pm2->dev, "Failed to enable" | |
796 | "pm2xxx ac charger\n"); | |
01ec8c54 MJ |
797 | goto error_occured; |
798 | } | |
799 | ||
800 | pm2->ac.charger_online = 1; | |
801 | } else { | |
802 | pm2->ac.charger_online = 0; | |
803 | pm2->ac.wd_expired = false; | |
804 | ||
805 | /* Disable regulator if enabled */ | |
806 | if (pm2->vddadc_en_ac) { | |
807 | regulator_disable(pm2->regu); | |
808 | pm2->vddadc_en_ac = false; | |
809 | } | |
810 | ||
811 | ret = pm2xxx_charging_disable_mngt(pm2); | |
e41f39ea RK |
812 | if (ret < 0) { |
813 | dev_err(pm2->dev, "failed to disable" | |
814 | "pm2xxx ac charger\n"); | |
815 | goto error_occured; | |
01ec8c54 MJ |
816 | } |
817 | ||
818 | dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n"); | |
819 | } | |
820 | power_supply_changed(&pm2->ac_chg.psy); | |
821 | ||
822 | error_occured: | |
823 | return ret; | |
824 | } | |
825 | ||
826 | static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger) | |
827 | { | |
828 | int ret; | |
829 | struct pm2xxx_charger *pm2; | |
830 | ||
831 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
832 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
833 | else | |
834 | return -ENXIO; | |
835 | ||
836 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER); | |
837 | if (ret) | |
838 | dev_err(pm2->dev, "Failed to kick WD!\n"); | |
839 | ||
840 | return ret; | |
841 | } | |
842 | ||
843 | static void pm2xxx_charger_ac_work(struct work_struct *work) | |
844 | { | |
845 | struct pm2xxx_charger *pm2 = container_of(work, | |
846 | struct pm2xxx_charger, ac_work); | |
847 | ||
848 | ||
849 | power_supply_changed(&pm2->ac_chg.psy); | |
850 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
851 | }; | |
852 | ||
789ca7b4 RK |
853 | static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work) |
854 | { | |
855 | u8 reg_value; | |
856 | ||
857 | struct pm2xxx_charger *pm2 = container_of(work, | |
858 | struct pm2xxx_charger, check_hw_failure_work.work); | |
859 | ||
860 | if (pm2->flags.ovv) { | |
861 | pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, ®_value); | |
862 | ||
863 | if (!(reg_value & (PM2XXX_INT4_S_ITVPWR1OVV | | |
864 | PM2XXX_INT4_S_ITVPWR2OVV))) { | |
865 | pm2->flags.ovv = false; | |
866 | power_supply_changed(&pm2->ac_chg.psy); | |
867 | } | |
868 | } | |
869 | ||
870 | /* If we still have a failure, schedule a new check */ | |
871 | if (pm2->flags.ovv) { | |
872 | queue_delayed_work(pm2->charger_wq, | |
873 | &pm2->check_hw_failure_work, round_jiffies(HZ)); | |
874 | } | |
875 | } | |
876 | ||
01ec8c54 MJ |
877 | static void pm2xxx_charger_check_main_thermal_prot_work( |
878 | struct work_struct *work) | |
879 | { | |
da9e83d4 RK |
880 | int ret; |
881 | u8 val; | |
882 | ||
883 | struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger, | |
884 | check_main_thermal_prot_work); | |
885 | ||
886 | /* Check if die temp warning is still active */ | |
887 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val); | |
888 | if (ret < 0) { | |
889 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
890 | return; | |
891 | } | |
892 | if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE | |
893 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE)) | |
894 | pm2->flags.main_thermal_prot = true; | |
895 | else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL | |
896 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL)) | |
897 | pm2->flags.main_thermal_prot = false; | |
898 | ||
899 | power_supply_changed(&pm2->ac_chg.psy); | |
900 | } | |
01ec8c54 | 901 | |
006f82d6 OC |
902 | static struct pm2xxx_interrupts pm2xxx_int = { |
903 | .handler[0] = pm2_int_reg0, | |
904 | .handler[1] = pm2_int_reg1, | |
905 | .handler[2] = pm2_int_reg2, | |
906 | .handler[3] = pm2_int_reg3, | |
907 | .handler[4] = pm2_int_reg4, | |
908 | .handler[5] = pm2_int_reg5, | |
909 | }; | |
910 | ||
01ec8c54 MJ |
911 | static struct pm2xxx_irq pm2xxx_charger_irq[] = { |
912 | {"PM2XXX_IRQ_INT", pm2xxx_irq_int}, | |
913 | }; | |
914 | ||
915 | static int pm2xxx_wall_charger_resume(struct i2c_client *i2c_client) | |
916 | { | |
49fddeec MBZ |
917 | struct pm2xxx_charger *pm2; |
918 | ||
919 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
920 | set_lpn_pin(pm2); | |
921 | ||
922 | /* If we still have a HW failure, schedule a new check */ | |
923 | if (pm2->flags.ovv) | |
924 | queue_delayed_work(pm2->charger_wq, | |
925 | &pm2->check_hw_failure_work, 0); | |
926 | ||
01ec8c54 MJ |
927 | return 0; |
928 | } | |
929 | ||
930 | static int pm2xxx_wall_charger_suspend(struct i2c_client *i2c_client, | |
931 | pm_message_t state) | |
932 | { | |
49fddeec MBZ |
933 | struct pm2xxx_charger *pm2; |
934 | ||
935 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
936 | clear_lpn_pin(pm2); | |
937 | ||
938 | /* Cancel any pending HW failure check */ | |
939 | if (delayed_work_pending(&pm2->check_hw_failure_work)) | |
940 | cancel_delayed_work(&pm2->check_hw_failure_work); | |
941 | ||
942 | flush_work(&pm2->ac_work); | |
943 | flush_work(&pm2->check_main_thermal_prot_work); | |
944 | ||
01ec8c54 MJ |
945 | return 0; |
946 | } | |
947 | ||
aee2b846 LJ |
948 | #ifdef CONFIG_PM |
949 | static int pm2xxx_runtime_suspend(struct device *dev) | |
950 | { | |
951 | struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev); | |
952 | struct pm2xxx_charger *pm2; | |
953 | int ret = 0; | |
954 | ||
955 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client); | |
956 | if (!pm2) { | |
957 | dev_err(pm2->dev, "no pm2xxx_charger data supplied\n"); | |
958 | ret = -EINVAL; | |
959 | return ret; | |
960 | } | |
961 | ||
962 | clear_lpn_pin(pm2); | |
963 | ||
964 | return ret; | |
965 | } | |
966 | ||
967 | static int pm2xxx_runtime_resume(struct device *dev) | |
968 | { | |
969 | struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev); | |
970 | struct pm2xxx_charger *pm2; | |
971 | int ret = 0; | |
972 | ||
973 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client); | |
974 | if (!pm2) { | |
975 | dev_err(pm2->dev, "no pm2xxx_charger data supplied\n"); | |
976 | ret = -EINVAL; | |
977 | return ret; | |
978 | } | |
979 | ||
980 | if (gpio_is_valid(pm2->lpn_pin) && gpio_get_value(pm2->lpn_pin) == 0) | |
981 | set_lpn_pin(pm2); | |
982 | ||
983 | return ret; | |
984 | } | |
985 | ||
986 | static const struct dev_pm_ops pm2xxx_pm_ops = { | |
987 | .runtime_suspend = pm2xxx_runtime_suspend, | |
988 | .runtime_resume = pm2xxx_runtime_resume, | |
989 | }; | |
990 | #define PM2XXX_PM_OPS (&pm2xxx_pm_ops) | |
991 | #else | |
992 | #define PM2XXX_PM_OPS NULL | |
993 | #endif | |
994 | ||
116c326e | 995 | static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client, |
01ec8c54 MJ |
996 | const struct i2c_device_id *id) |
997 | { | |
998 | struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data; | |
999 | struct pm2xxx_charger *pm2; | |
1000 | int ret = 0; | |
1001 | u8 val; | |
f4095a0f | 1002 | int i; |
01ec8c54 MJ |
1003 | |
1004 | pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL); | |
1005 | if (!pm2) { | |
1006 | dev_err(pm2->dev, "pm2xxx_charger allocation failed\n"); | |
1007 | return -ENOMEM; | |
1008 | } | |
1009 | ||
1010 | /* get parent data */ | |
1011 | pm2->dev = &i2c_client->dev; | |
01ec8c54 | 1012 | |
006f82d6 OC |
1013 | pm2->pm2_int = &pm2xxx_int; |
1014 | ||
01ec8c54 MJ |
1015 | /* get charger spcific platform data */ |
1016 | if (!pl_data->wall_charger) { | |
1017 | dev_err(pm2->dev, "no charger platform data supplied\n"); | |
1018 | ret = -EINVAL; | |
1019 | goto free_device_info; | |
1020 | } | |
1021 | ||
1022 | pm2->pdata = pl_data->wall_charger; | |
1023 | ||
1024 | /* get battery specific platform data */ | |
1025 | if (!pl_data->battery) { | |
1026 | dev_err(pm2->dev, "no battery platform data supplied\n"); | |
1027 | ret = -EINVAL; | |
1028 | goto free_device_info; | |
1029 | } | |
1030 | ||
1031 | pm2->bat = pl_data->battery; | |
1032 | ||
1033 | if (!i2c_check_functionality(i2c_client->adapter, | |
1034 | I2C_FUNC_SMBUS_BYTE_DATA | | |
1035 | I2C_FUNC_SMBUS_READ_WORD_DATA)) { | |
1036 | ret = -ENODEV; | |
1037 | dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n"); | |
1038 | goto free_device_info; | |
1039 | } | |
1040 | ||
1041 | pm2->config.pm2xxx_i2c = i2c_client; | |
1042 | pm2->config.pm2xxx_id = (struct i2c_device_id *) id; | |
1043 | i2c_set_clientdata(i2c_client, pm2); | |
1044 | ||
1045 | /* AC supply */ | |
1046 | /* power_supply base class */ | |
1047 | pm2->ac_chg.psy.name = pm2->pdata->label; | |
1048 | pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; | |
1049 | pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props; | |
1050 | pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props); | |
1051 | pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property; | |
1052 | pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to; | |
1053 | pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants; | |
1054 | /* pm2xxx_charger sub-class */ | |
1055 | pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en; | |
1056 | pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick; | |
1057 | pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current; | |
1058 | pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[ | |
1059 | ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1]; | |
1060 | pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[ | |
1061 | ARRAY_SIZE(pm2xxx_charger_current_map) - 1]; | |
e07a5645 | 1062 | pm2->ac_chg.wdt_refresh = WD_KICK_INTERVAL; |
006f82d6 | 1063 | pm2->ac_chg.enabled = true; |
e07a5645 | 1064 | pm2->ac_chg.external = true; |
01ec8c54 MJ |
1065 | |
1066 | /* Create a work queue for the charger */ | |
1067 | pm2->charger_wq = | |
1068 | create_singlethread_workqueue("pm2xxx_charger_wq"); | |
1069 | if (pm2->charger_wq == NULL) { | |
1070 | dev_err(pm2->dev, "failed to create work queue\n"); | |
1071 | goto free_device_info; | |
1072 | } | |
1073 | ||
1074 | /* Init work for charger detection */ | |
1075 | INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work); | |
1076 | ||
1077 | /* Init work for checking HW status */ | |
1078 | INIT_WORK(&pm2->check_main_thermal_prot_work, | |
1079 | pm2xxx_charger_check_main_thermal_prot_work); | |
1080 | ||
789ca7b4 RK |
1081 | /* Init work for HW failure check */ |
1082 | INIT_DEFERRABLE_WORK(&pm2->check_hw_failure_work, | |
1083 | pm2xxx_charger_check_hw_failure_work); | |
1084 | ||
01ec8c54 MJ |
1085 | /* |
1086 | * VDD ADC supply needs to be enabled from this driver when there | |
1087 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW | |
1088 | * interrupts during charging | |
1089 | */ | |
1090 | pm2->regu = regulator_get(pm2->dev, "vddadc"); | |
1091 | if (IS_ERR(pm2->regu)) { | |
1092 | ret = PTR_ERR(pm2->regu); | |
1093 | dev_err(pm2->dev, "failed to get vddadc regulator\n"); | |
1094 | goto free_charger_wq; | |
1095 | } | |
1096 | ||
1097 | /* Register AC charger class */ | |
1098 | ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy); | |
1099 | if (ret) { | |
1100 | dev_err(pm2->dev, "failed to register AC charger\n"); | |
1101 | goto free_regulator; | |
1102 | } | |
1103 | ||
1104 | /* Register interrupts */ | |
f4095a0f B |
1105 | ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), |
1106 | NULL, | |
01ec8c54 MJ |
1107 | pm2xxx_charger_irq[0].isr, |
1108 | pm2->pdata->irq_type, | |
1109 | pm2xxx_charger_irq[0].name, pm2); | |
1110 | ||
1111 | if (ret != 0) { | |
1112 | dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n", | |
f4095a0f B |
1113 | pm2xxx_charger_irq[0].name, |
1114 | gpio_to_irq(pm2->pdata->gpio_irq_number), ret); | |
01ec8c54 MJ |
1115 | goto unregister_pm2xxx_charger; |
1116 | } | |
aee2b846 LJ |
1117 | |
1118 | ret = pm_runtime_set_active(pm2->dev); | |
1119 | if (ret) | |
1120 | dev_err(pm2->dev, "set active Error\n"); | |
1121 | ||
1122 | pm_runtime_enable(pm2->dev); | |
1123 | pm_runtime_set_autosuspend_delay(pm2->dev, PM2XXX_AUTOSUSPEND_DELAY); | |
1124 | pm_runtime_use_autosuspend(pm2->dev); | |
1125 | pm_runtime_resume(pm2->dev); | |
1126 | ||
d4f510f6 | 1127 | /* pm interrupt can wake up system */ |
f4095a0f | 1128 | ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1129 | if (ret) { |
1130 | dev_err(pm2->dev, "failed to set irq wake\n"); | |
1131 | goto unregister_pm2xxx_interrupt; | |
1132 | } | |
01ec8c54 | 1133 | |
3988043b LJ |
1134 | mutex_init(&pm2->lock); |
1135 | ||
a21e22f2 | 1136 | if (gpio_is_valid(pm2->pdata->lpn_gpio)) { |
1137 | /* get lpn GPIO from platform data */ | |
1138 | pm2->lpn_pin = pm2->pdata->lpn_gpio; | |
3988043b | 1139 | |
a21e22f2 | 1140 | /* |
1141 | * Charger detection mechanism requires pulling up the LPN pin | |
1142 | * while i2c communication if Charger is not connected | |
1143 | * LPN pin of PM2301 is GPIO60 of AB9540 | |
1144 | */ | |
1145 | ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio"); | |
1146 | ||
1147 | if (ret < 0) { | |
1148 | dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n"); | |
1149 | goto disable_pm2_irq_wake; | |
1150 | } | |
1151 | ret = gpio_direction_output(pm2->lpn_pin, 0); | |
1152 | if (ret < 0) { | |
1153 | dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n"); | |
1154 | goto free_gpio; | |
1155 | } | |
1156 | set_lpn_pin(pm2); | |
1157 | } | |
f4095a0f B |
1158 | |
1159 | /* read interrupt registers */ | |
1160 | for (i = 0; i < PM2XXX_NUM_INT_REG; i++) | |
1161 | pm2xxx_reg_read(pm2, | |
1162 | pm2xxx_interrupt_registers[i], | |
1163 | &val); | |
1164 | ||
01ec8c54 MJ |
1165 | ret = pm2xxx_charger_detection(pm2, &val); |
1166 | ||
1167 | if ((ret == 0) && val) { | |
1168 | pm2->ac.charger_connected = 1; | |
54fbbb62 PF |
1169 | ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON, |
1170 | AB8500_MAIN_CH_DET); | |
01ec8c54 MJ |
1171 | pm2->ac_conn = true; |
1172 | power_supply_changed(&pm2->ac_chg.psy); | |
1173 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
1174 | } | |
1175 | ||
1176 | return 0; | |
1177 | ||
3988043b | 1178 | free_gpio: |
a21e22f2 | 1179 | if (gpio_is_valid(pm2->lpn_pin)) |
1180 | gpio_free(pm2->lpn_pin); | |
d4f510f6 | 1181 | disable_pm2_irq_wake: |
f4095a0f | 1182 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1183 | unregister_pm2xxx_interrupt: |
1184 | /* disable interrupt */ | |
f4095a0f | 1185 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1186 | unregister_pm2xxx_charger: |
1187 | /* unregister power supply */ | |
1188 | power_supply_unregister(&pm2->ac_chg.psy); | |
1189 | free_regulator: | |
1190 | /* disable the regulator */ | |
1191 | regulator_put(pm2->regu); | |
1192 | free_charger_wq: | |
1193 | destroy_workqueue(pm2->charger_wq); | |
1194 | free_device_info: | |
1195 | kfree(pm2); | |
d4f510f6 | 1196 | |
01ec8c54 MJ |
1197 | return ret; |
1198 | } | |
1199 | ||
116c326e | 1200 | static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client) |
01ec8c54 MJ |
1201 | { |
1202 | struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client); | |
1203 | ||
aee2b846 LJ |
1204 | /* Disable pm_runtime */ |
1205 | pm_runtime_disable(pm2->dev); | |
01ec8c54 MJ |
1206 | /* Disable AC charging */ |
1207 | pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0); | |
1208 | ||
d4f510f6 | 1209 | /* Disable wake by pm interrupt */ |
f4095a0f | 1210 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 | 1211 | |
01ec8c54 | 1212 | /* Disable interrupts */ |
f4095a0f | 1213 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1214 | |
1215 | /* Delete the work queue */ | |
1216 | destroy_workqueue(pm2->charger_wq); | |
1217 | ||
1218 | flush_scheduled_work(); | |
1219 | ||
1220 | /* disable the regulator */ | |
1221 | regulator_put(pm2->regu); | |
1222 | ||
1223 | power_supply_unregister(&pm2->ac_chg.psy); | |
1224 | ||
a21e22f2 | 1225 | if (gpio_is_valid(pm2->lpn_pin)) |
1226 | gpio_free(pm2->lpn_pin); | |
3988043b | 1227 | |
01ec8c54 MJ |
1228 | kfree(pm2); |
1229 | ||
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | static const struct i2c_device_id pm2xxx_id[] = { | |
1234 | { "pm2301", 0 }, | |
1235 | { } | |
1236 | }; | |
1237 | ||
1238 | MODULE_DEVICE_TABLE(i2c, pm2xxx_id); | |
1239 | ||
1240 | static struct i2c_driver pm2xxx_charger_driver = { | |
1241 | .probe = pm2xxx_wall_charger_probe, | |
116c326e | 1242 | .remove = pm2xxx_wall_charger_remove, |
01ec8c54 MJ |
1243 | .suspend = pm2xxx_wall_charger_suspend, |
1244 | .resume = pm2xxx_wall_charger_resume, | |
1245 | .driver = { | |
1246 | .name = "pm2xxx-wall_charger", | |
1247 | .owner = THIS_MODULE, | |
aee2b846 | 1248 | .pm = PM2XXX_PM_OPS, |
01ec8c54 MJ |
1249 | }, |
1250 | .id_table = pm2xxx_id, | |
1251 | }; | |
1252 | ||
1253 | static int __init pm2xxx_charger_init(void) | |
1254 | { | |
1255 | return i2c_add_driver(&pm2xxx_charger_driver); | |
1256 | } | |
1257 | ||
1258 | static void __exit pm2xxx_charger_exit(void) | |
1259 | { | |
1260 | i2c_del_driver(&pm2xxx_charger_driver); | |
1261 | } | |
1262 | ||
a21e22f2 | 1263 | device_initcall_sync(pm2xxx_charger_init); |
01ec8c54 MJ |
1264 | module_exit(pm2xxx_charger_exit); |
1265 | ||
1266 | MODULE_LICENSE("GPL v2"); | |
1267 | MODULE_AUTHOR("Rajkumar kasirajan, Olivier Launay"); | |
1268 | MODULE_ALIAS("platform:pm2xxx-charger"); | |
1269 | MODULE_DESCRIPTION("PM2xxx charger management driver"); |