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> | |
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> |
6b170807 | 29 | #include <linux/pm.h> |
01ec8c54 | 30 | |
2fa5b0f4 | 31 | #include "pm2301_charger.h" |
01ec8c54 MJ |
32 | |
33 | #define to_pm2xxx_charger_ac_device_info(x) container_of((x), \ | |
34 | struct pm2xxx_charger, ac_chg) | |
49fddeec MBZ |
35 | #define SLEEP_MIN 50 |
36 | #define SLEEP_MAX 100 | |
aee2b846 | 37 | #define PM2XXX_AUTOSUSPEND_DELAY 500 |
01ec8c54 MJ |
38 | |
39 | static int pm2xxx_interrupt_registers[] = { | |
40 | PM2XXX_REG_INT1, | |
41 | PM2XXX_REG_INT2, | |
42 | PM2XXX_REG_INT3, | |
43 | PM2XXX_REG_INT4, | |
44 | PM2XXX_REG_INT5, | |
45 | PM2XXX_REG_INT6, | |
46 | }; | |
47 | ||
01ec8c54 MJ |
48 | static enum power_supply_property pm2xxx_charger_ac_props[] = { |
49 | POWER_SUPPLY_PROP_HEALTH, | |
50 | POWER_SUPPLY_PROP_PRESENT, | |
51 | POWER_SUPPLY_PROP_ONLINE, | |
01ec8c54 | 52 | POWER_SUPPLY_PROP_VOLTAGE_AVG, |
01ec8c54 MJ |
53 | }; |
54 | ||
55 | static int pm2xxx_charger_voltage_map[] = { | |
56 | 3500, | |
57 | 3525, | |
58 | 3550, | |
59 | 3575, | |
60 | 3600, | |
61 | 3625, | |
62 | 3650, | |
63 | 3675, | |
64 | 3700, | |
65 | 3725, | |
66 | 3750, | |
67 | 3775, | |
68 | 3800, | |
69 | 3825, | |
70 | 3850, | |
71 | 3875, | |
72 | 3900, | |
73 | 3925, | |
74 | 3950, | |
75 | 3975, | |
76 | 4000, | |
77 | 4025, | |
78 | 4050, | |
79 | 4075, | |
80 | 4100, | |
81 | 4125, | |
82 | 4150, | |
83 | 4175, | |
84 | 4200, | |
85 | 4225, | |
86 | 4250, | |
87 | 4275, | |
88 | 4300, | |
89 | }; | |
90 | ||
91 | static int pm2xxx_charger_current_map[] = { | |
92 | 200, | |
93 | 200, | |
94 | 400, | |
95 | 600, | |
96 | 800, | |
97 | 1000, | |
98 | 1200, | |
99 | 1400, | |
100 | 1600, | |
101 | 1800, | |
102 | 2000, | |
103 | 2200, | |
104 | 2400, | |
105 | 2600, | |
106 | 2800, | |
107 | 3000, | |
108 | }; | |
109 | ||
01ec8c54 MJ |
110 | static const struct i2c_device_id pm2xxx_ident[] = { |
111 | { "pm2301", 0 }, | |
112 | { } | |
113 | }; | |
114 | ||
3988043b LJ |
115 | static void set_lpn_pin(struct pm2xxx_charger *pm2) |
116 | { | |
a21e22f2 | 117 | if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) { |
118 | gpio_set_value(pm2->lpn_pin, 1); | |
119 | usleep_range(SLEEP_MIN, SLEEP_MAX); | |
120 | } | |
3988043b LJ |
121 | } |
122 | ||
123 | static void clear_lpn_pin(struct pm2xxx_charger *pm2) | |
124 | { | |
a21e22f2 | 125 | if (!pm2->ac.charger_connected && gpio_is_valid(pm2->lpn_pin)) |
126 | gpio_set_value(pm2->lpn_pin, 0); | |
3988043b LJ |
127 | } |
128 | ||
01ec8c54 MJ |
129 | static int pm2xxx_reg_read(struct pm2xxx_charger *pm2, int reg, u8 *val) |
130 | { | |
131 | int ret; | |
b64f51c4 RK |
132 | |
133 | /* wake up the device */ | |
134 | pm_runtime_get_sync(pm2->dev); | |
01ec8c54 MJ |
135 | |
136 | ret = i2c_smbus_read_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
137 | 1, val); | |
138 | if (ret < 0) | |
139 | dev_err(pm2->dev, "Error reading register at 0x%x\n", reg); | |
e41f39ea RK |
140 | else |
141 | ret = 0; | |
01ec8c54 | 142 | |
9b7f50e3 | 143 | pm_runtime_put_sync(pm2->dev); |
01ec8c54 MJ |
144 | |
145 | return ret; | |
146 | } | |
147 | ||
148 | static int pm2xxx_reg_write(struct pm2xxx_charger *pm2, int reg, u8 val) | |
149 | { | |
150 | int ret; | |
b64f51c4 RK |
151 | |
152 | /* wake up the device */ | |
153 | pm_runtime_get_sync(pm2->dev); | |
01ec8c54 MJ |
154 | |
155 | ret = i2c_smbus_write_i2c_block_data(pm2->config.pm2xxx_i2c, reg, | |
156 | 1, &val); | |
157 | if (ret < 0) | |
158 | dev_err(pm2->dev, "Error writing register at 0x%x\n", reg); | |
e41f39ea RK |
159 | else |
160 | ret = 0; | |
01ec8c54 | 161 | |
9b7f50e3 | 162 | pm_runtime_put_sync(pm2->dev); |
01ec8c54 MJ |
163 | |
164 | return ret; | |
165 | } | |
166 | ||
167 | static int pm2xxx_charging_enable_mngt(struct pm2xxx_charger *pm2) | |
168 | { | |
169 | int ret; | |
170 | ||
171 | /* Enable charging */ | |
172 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
173 | (PM2XXX_CH_AUTO_RESUME_EN | PM2XXX_CHARGER_ENA)); | |
174 | ||
175 | return ret; | |
176 | } | |
177 | ||
178 | static int pm2xxx_charging_disable_mngt(struct pm2xxx_charger *pm2) | |
179 | { | |
180 | int ret; | |
181 | ||
584f9703 RK |
182 | /* Disable SW EOC ctrl */ |
183 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, PM2XXX_SWCTRL_HW); | |
184 | if (ret < 0) { | |
185 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
186 | return ret; | |
187 | } | |
188 | ||
01ec8c54 MJ |
189 | /* Disable charging */ |
190 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG2, | |
191 | (PM2XXX_CH_AUTO_RESUME_DIS | PM2XXX_CHARGER_DIS)); | |
584f9703 RK |
192 | if (ret < 0) { |
193 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
194 | return ret; | |
195 | } | |
01ec8c54 | 196 | |
584f9703 | 197 | return 0; |
01ec8c54 MJ |
198 | } |
199 | ||
200 | static int pm2xxx_charger_batt_therm_mngt(struct pm2xxx_charger *pm2, int val) | |
201 | { | |
202 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | ||
83bd57ae | 208 | static int pm2xxx_charger_die_therm_mngt(struct pm2xxx_charger *pm2, int val) |
01ec8c54 MJ |
209 | { |
210 | queue_work(pm2->charger_wq, &pm2->check_main_thermal_prot_work); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static int pm2xxx_charger_ovv_mngt(struct pm2xxx_charger *pm2, int val) | |
216 | { | |
789ca7b4 RK |
217 | dev_err(pm2->dev, "Overvoltage detected\n"); |
218 | pm2->flags.ovv = true; | |
219 | power_supply_changed(&pm2->ac_chg.psy); | |
01ec8c54 | 220 | |
789ca7b4 RK |
221 | /* Schedule a new HW failure check */ |
222 | queue_delayed_work(pm2->charger_wq, &pm2->check_hw_failure_work, 0); | |
01ec8c54 | 223 | |
789ca7b4 | 224 | return 0; |
01ec8c54 MJ |
225 | } |
226 | ||
227 | static int pm2xxx_charger_wd_exp_mngt(struct pm2xxx_charger *pm2, int val) | |
228 | { | |
07f42258 | 229 | dev_dbg(pm2->dev , "20 minutes watchdog expired\n"); |
01ec8c54 MJ |
230 | |
231 | pm2->ac.wd_expired = true; | |
232 | power_supply_changed(&pm2->ac_chg.psy); | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | static int pm2xxx_charger_vbat_lsig_mngt(struct pm2xxx_charger *pm2, int val) | |
238 | { | |
584f9703 RK |
239 | int ret; |
240 | ||
01ec8c54 MJ |
241 | switch (val) { |
242 | case PM2XXX_INT1_ITVBATLOWR: | |
243 | dev_dbg(pm2->dev, "VBAT grows above VBAT_LOW level\n"); | |
584f9703 RK |
244 | /* Enable SW EOC ctrl */ |
245 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
246 | PM2XXX_SWCTRL_SW); | |
247 | if (ret < 0) { | |
248 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
249 | return ret; | |
250 | } | |
01ec8c54 MJ |
251 | break; |
252 | ||
253 | case PM2XXX_INT1_ITVBATLOWF: | |
254 | dev_dbg(pm2->dev, "VBAT drops below VBAT_LOW level\n"); | |
584f9703 RK |
255 | /* Disable SW EOC ctrl */ |
256 | ret = pm2xxx_reg_write(pm2, PM2XXX_SW_CTRL_REG, | |
257 | PM2XXX_SWCTRL_HW); | |
258 | if (ret < 0) { | |
259 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
260 | return ret; | |
261 | } | |
01ec8c54 MJ |
262 | break; |
263 | ||
264 | default: | |
265 | dev_err(pm2->dev, "Unknown VBAT level\n"); | |
266 | } | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | static int pm2xxx_charger_bat_disc_mngt(struct pm2xxx_charger *pm2, int val) | |
272 | { | |
273 | dev_dbg(pm2->dev, "battery disconnected\n"); | |
274 | ||
006f82d6 | 275 | return 0; |
01ec8c54 MJ |
276 | } |
277 | ||
278 | static int pm2xxx_charger_detection(struct pm2xxx_charger *pm2, u8 *val) | |
279 | { | |
e41f39ea | 280 | int ret; |
01ec8c54 MJ |
281 | |
282 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT2, val); | |
283 | ||
284 | if (ret < 0) { | |
285 | dev_err(pm2->dev, "Charger detection failed\n"); | |
286 | goto out; | |
287 | } | |
288 | ||
289 | *val &= (PM2XXX_INT2_S_ITVPWR1PLUG | PM2XXX_INT2_S_ITVPWR2PLUG); | |
e41f39ea | 290 | |
01ec8c54 MJ |
291 | out: |
292 | return ret; | |
293 | } | |
294 | ||
295 | static int pm2xxx_charger_itv_pwr_plug_mngt(struct pm2xxx_charger *pm2, int val) | |
296 | { | |
297 | ||
298 | int ret; | |
299 | u8 read_val; | |
300 | ||
301 | /* | |
302 | * Since we can't be sure that the events are received | |
303 | * synchronously, we have the check if the main charger is | |
304 | * connected by reading the interrupt source register. | |
305 | */ | |
306 | ret = pm2xxx_charger_detection(pm2, &read_val); | |
307 | ||
308 | if ((ret == 0) && read_val) { | |
309 | pm2->ac.charger_connected = 1; | |
310 | pm2->ac_conn = true; | |
311 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
312 | } | |
313 | ||
314 | ||
315 | return ret; | |
316 | } | |
317 | ||
318 | static int pm2xxx_charger_itv_pwr_unplug_mngt(struct pm2xxx_charger *pm2, | |
319 | int val) | |
320 | { | |
321 | pm2->ac.charger_connected = 0; | |
322 | queue_work(pm2->charger_wq, &pm2->ac_work); | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
006f82d6 | 327 | static int pm2_int_reg0(void *pm2_data, int val) |
01ec8c54 | 328 | { |
006f82d6 | 329 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
330 | int ret = 0; |
331 | ||
584f9703 RK |
332 | if (val & PM2XXX_INT1_ITVBATLOWR) { |
333 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
334 | PM2XXX_INT1_ITVBATLOWR); | |
335 | if (ret < 0) | |
336 | goto out; | |
337 | } | |
338 | ||
339 | if (val & PM2XXX_INT1_ITVBATLOWF) { | |
340 | ret = pm2xxx_charger_vbat_lsig_mngt(pm2, | |
341 | PM2XXX_INT1_ITVBATLOWF); | |
342 | if (ret < 0) | |
343 | goto out; | |
01ec8c54 MJ |
344 | } |
345 | ||
006f82d6 | 346 | if (val & PM2XXX_INT1_ITVBATDISCONNECT) { |
01ec8c54 MJ |
347 | ret = pm2xxx_charger_bat_disc_mngt(pm2, |
348 | PM2XXX_INT1_ITVBATDISCONNECT); | |
584f9703 RK |
349 | if (ret < 0) |
350 | goto out; | |
01ec8c54 | 351 | } |
584f9703 | 352 | out: |
01ec8c54 MJ |
353 | return ret; |
354 | } | |
355 | ||
006f82d6 | 356 | static int pm2_int_reg1(void *pm2_data, int val) |
01ec8c54 | 357 | { |
006f82d6 | 358 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
359 | int ret = 0; |
360 | ||
006f82d6 | 361 | if (val & (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)) { |
01ec8c54 | 362 | dev_dbg(pm2->dev , "Main charger plugged\n"); |
006f82d6 | 363 | ret = pm2xxx_charger_itv_pwr_plug_mngt(pm2, val & |
01ec8c54 MJ |
364 | (PM2XXX_INT2_ITVPWR1PLUG | PM2XXX_INT2_ITVPWR2PLUG)); |
365 | } | |
366 | ||
006f82d6 | 367 | if (val & |
01ec8c54 MJ |
368 | (PM2XXX_INT2_ITVPWR1UNPLUG | PM2XXX_INT2_ITVPWR2UNPLUG)) { |
369 | dev_dbg(pm2->dev , "Main charger unplugged\n"); | |
006f82d6 | 370 | ret = pm2xxx_charger_itv_pwr_unplug_mngt(pm2, val & |
01ec8c54 MJ |
371 | (PM2XXX_INT2_ITVPWR1UNPLUG | |
372 | PM2XXX_INT2_ITVPWR2UNPLUG)); | |
373 | } | |
374 | ||
375 | return ret; | |
376 | } | |
377 | ||
006f82d6 | 378 | static int pm2_int_reg2(void *pm2_data, int val) |
01ec8c54 | 379 | { |
006f82d6 | 380 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
381 | int ret = 0; |
382 | ||
006f82d6 OC |
383 | if (val & PM2XXX_INT3_ITAUTOTIMEOUTWD) |
384 | ret = pm2xxx_charger_wd_exp_mngt(pm2, val); | |
01ec8c54 | 385 | |
006f82d6 | 386 | if (val & (PM2XXX_INT3_ITCHPRECHARGEWD | |
01ec8c54 MJ |
387 | PM2XXX_INT3_ITCHCCWD | PM2XXX_INT3_ITCHCVWD)) { |
388 | dev_dbg(pm2->dev, | |
0b1587b1 | 389 | "Watchdog occurred for precharge, CC and CV charge\n"); |
01ec8c54 MJ |
390 | } |
391 | ||
392 | return ret; | |
393 | } | |
394 | ||
006f82d6 | 395 | static int pm2_int_reg3(void *pm2_data, int val) |
01ec8c54 | 396 | { |
006f82d6 | 397 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
398 | int ret = 0; |
399 | ||
006f82d6 | 400 | if (val & (PM2XXX_INT4_ITCHARGINGON)) { |
01ec8c54 MJ |
401 | dev_dbg(pm2->dev , |
402 | "chargind operation has started\n"); | |
403 | } | |
404 | ||
006f82d6 | 405 | if (val & (PM2XXX_INT4_ITVRESUME)) { |
01ec8c54 MJ |
406 | dev_dbg(pm2->dev, |
407 | "battery discharged down to VResume threshold\n"); | |
408 | } | |
409 | ||
006f82d6 | 410 | if (val & (PM2XXX_INT4_ITBATTFULL)) { |
01ec8c54 MJ |
411 | dev_dbg(pm2->dev , "battery fully detected\n"); |
412 | } | |
413 | ||
006f82d6 | 414 | if (val & (PM2XXX_INT4_ITCVPHASE)) { |
01ec8c54 MJ |
415 | dev_dbg(pm2->dev, "CV phase enter with 0.5C charging\n"); |
416 | } | |
417 | ||
006f82d6 | 418 | if (val & (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)) { |
01ec8c54 | 419 | pm2->failure_case = VPWR_OVV; |
006f82d6 | 420 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
421 | (PM2XXX_INT4_ITVPWR2OVV | PM2XXX_INT4_ITVPWR1OVV)); |
422 | dev_dbg(pm2->dev, "VPWR/VSYSTEM overvoltage detected\n"); | |
423 | } | |
424 | ||
006f82d6 | 425 | if (val & (PM2XXX_INT4_S_ITBATTEMPCOLD | |
01ec8c54 | 426 | PM2XXX_INT4_S_ITBATTEMPHOT)) { |
006f82d6 OC |
427 | ret = pm2xxx_charger_batt_therm_mngt(pm2, val & |
428 | (PM2XXX_INT4_S_ITBATTEMPCOLD | | |
429 | PM2XXX_INT4_S_ITBATTEMPHOT)); | |
01ec8c54 MJ |
430 | dev_dbg(pm2->dev, "BTEMP is too Low/High\n"); |
431 | } | |
432 | ||
433 | return ret; | |
434 | } | |
435 | ||
006f82d6 | 436 | static int pm2_int_reg4(void *pm2_data, int val) |
01ec8c54 | 437 | { |
006f82d6 | 438 | struct pm2xxx_charger *pm2 = pm2_data; |
01ec8c54 MJ |
439 | int ret = 0; |
440 | ||
006f82d6 | 441 | if (val & PM2XXX_INT5_ITVSYSTEMOVV) { |
01ec8c54 | 442 | pm2->failure_case = VSYSTEM_OVV; |
006f82d6 | 443 | ret = pm2xxx_charger_ovv_mngt(pm2, val & |
01ec8c54 MJ |
444 | PM2XXX_INT5_ITVSYSTEMOVV); |
445 | dev_dbg(pm2->dev, "VSYSTEM overvoltage detected\n"); | |
446 | } | |
447 | ||
006f82d6 | 448 | if (val & (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
01ec8c54 MJ |
449 | PM2XXX_INT5_ITTHERMALWARNINGRISE | |
450 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
451 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)) { | |
452 | dev_dbg(pm2->dev, "BTEMP die temperature is too Low/High\n"); | |
006f82d6 | 453 | ret = pm2xxx_charger_die_therm_mngt(pm2, val & |
01ec8c54 MJ |
454 | (PM2XXX_INT5_ITTHERMALWARNINGFALL | |
455 | PM2XXX_INT5_ITTHERMALWARNINGRISE | | |
456 | PM2XXX_INT5_ITTHERMALSHUTDOWNFALL | | |
457 | PM2XXX_INT5_ITTHERMALSHUTDOWNRISE)); | |
458 | } | |
459 | ||
460 | return ret; | |
461 | } | |
462 | ||
006f82d6 | 463 | static int pm2_int_reg5(void *pm2_data, int val) |
01ec8c54 | 464 | { |
006f82d6 OC |
465 | struct pm2xxx_charger *pm2 = pm2_data; |
466 | int ret = 0; | |
467 | ||
006f82d6 | 468 | if (val & (PM2XXX_INT6_ITVPWR2DROP | PM2XXX_INT6_ITVPWR1DROP)) { |
01ec8c54 MJ |
469 | dev_dbg(pm2->dev, "VMPWR drop to VBAT level\n"); |
470 | } | |
471 | ||
006f82d6 OC |
472 | if (val & (PM2XXX_INT6_ITVPWR2VALIDRISE | |
473 | PM2XXX_INT6_ITVPWR1VALIDRISE | | |
474 | PM2XXX_INT6_ITVPWR2VALIDFALL | | |
475 | PM2XXX_INT6_ITVPWR1VALIDFALL)) { | |
01ec8c54 MJ |
476 | dev_dbg(pm2->dev, "Falling/Rising edge on WPWR1/2\n"); |
477 | } | |
478 | ||
006f82d6 | 479 | return ret; |
01ec8c54 MJ |
480 | } |
481 | ||
482 | static irqreturn_t pm2xxx_irq_int(int irq, void *data) | |
483 | { | |
484 | struct pm2xxx_charger *pm2 = data; | |
006f82d6 OC |
485 | struct pm2xxx_interrupts *interrupt = pm2->pm2_int; |
486 | int i; | |
01ec8c54 | 487 | |
aee2b846 LJ |
488 | /* wake up the device */ |
489 | pm_runtime_get_sync(pm2->dev); | |
490 | ||
f4095a0f B |
491 | do { |
492 | for (i = 0; i < PM2XXX_NUM_INT_REG; i++) { | |
493 | pm2xxx_reg_read(pm2, | |
006f82d6 OC |
494 | pm2xxx_interrupt_registers[i], |
495 | &(interrupt->reg[i])); | |
01ec8c54 | 496 | |
f4095a0f B |
497 | if (interrupt->reg[i] > 0) |
498 | interrupt->handler[i](pm2, interrupt->reg[i]); | |
499 | } | |
500 | } while (gpio_get_value(pm2->pdata->gpio_irq_number) == 0); | |
01ec8c54 | 501 | |
aee2b846 LJ |
502 | pm_runtime_mark_last_busy(pm2->dev); |
503 | pm_runtime_put_autosuspend(pm2->dev); | |
01ec8c54 MJ |
504 | |
505 | return IRQ_HANDLED; | |
506 | } | |
507 | ||
01ec8c54 MJ |
508 | static int pm2xxx_charger_get_ac_cv(struct pm2xxx_charger *pm2) |
509 | { | |
510 | int ret = 0; | |
511 | u8 val; | |
512 | ||
513 | if (pm2->ac.charger_connected && pm2->ac.charger_online) { | |
514 | ||
515 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, &val); | |
516 | if (ret < 0) { | |
517 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
518 | goto out; | |
519 | } | |
520 | ||
521 | if (val & PM2XXX_INT4_S_ITCVPHASE) | |
522 | ret = PM2XXX_CONST_VOLT; | |
523 | else | |
524 | ret = PM2XXX_CONST_CURR; | |
525 | } | |
526 | out: | |
527 | return ret; | |
528 | } | |
529 | ||
01ec8c54 MJ |
530 | static int pm2xxx_current_to_regval(int curr) |
531 | { | |
532 | int i; | |
533 | ||
534 | if (curr < pm2xxx_charger_current_map[0]) | |
535 | return 0; | |
536 | ||
537 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_current_map); i++) { | |
538 | if (curr < pm2xxx_charger_current_map[i]) | |
539 | return (i - 1); | |
540 | } | |
541 | ||
542 | i = ARRAY_SIZE(pm2xxx_charger_current_map) - 1; | |
543 | if (curr == pm2xxx_charger_current_map[i]) | |
544 | return i; | |
545 | else | |
546 | return -EINVAL; | |
547 | } | |
548 | ||
549 | static int pm2xxx_voltage_to_regval(int curr) | |
550 | { | |
551 | int i; | |
552 | ||
553 | if (curr < pm2xxx_charger_voltage_map[0]) | |
554 | return 0; | |
555 | ||
556 | for (i = 1; i < ARRAY_SIZE(pm2xxx_charger_voltage_map); i++) { | |
557 | if (curr < pm2xxx_charger_voltage_map[i]) | |
558 | return i - 1; | |
559 | } | |
560 | ||
561 | i = ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1; | |
562 | if (curr == pm2xxx_charger_voltage_map[i]) | |
563 | return i; | |
564 | else | |
565 | return -EINVAL; | |
566 | } | |
567 | ||
568 | static int pm2xxx_charger_update_charger_current(struct ux500_charger *charger, | |
569 | int ich_out) | |
570 | { | |
571 | int ret; | |
572 | int curr_index; | |
573 | struct pm2xxx_charger *pm2; | |
574 | u8 val; | |
575 | ||
576 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
577 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
578 | else | |
579 | return -ENXIO; | |
580 | ||
581 | curr_index = pm2xxx_current_to_regval(ich_out); | |
582 | if (curr_index < 0) { | |
583 | dev_err(pm2->dev, | |
006f82d6 | 584 | "Charger current too high, charging not started\n"); |
01ec8c54 MJ |
585 | return -ENXIO; |
586 | } | |
587 | ||
588 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
589 | if (ret >= 0) { | |
590 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
591 | val |= curr_index; | |
592 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
593 | if (ret < 0) { | |
594 | dev_err(pm2->dev, | |
595 | "%s write failed\n", __func__); | |
596 | } | |
597 | } | |
598 | else | |
599 | dev_err(pm2->dev, "%s read failed\n", __func__); | |
600 | ||
601 | return ret; | |
602 | } | |
603 | ||
604 | static int pm2xxx_charger_ac_get_property(struct power_supply *psy, | |
605 | enum power_supply_property psp, | |
606 | union power_supply_propval *val) | |
607 | { | |
608 | struct pm2xxx_charger *pm2; | |
609 | ||
610 | pm2 = to_pm2xxx_charger_ac_device_info(psy_to_ux500_charger(psy)); | |
611 | ||
612 | switch (psp) { | |
613 | case POWER_SUPPLY_PROP_HEALTH: | |
614 | if (pm2->flags.mainextchnotok) | |
615 | val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE; | |
616 | else if (pm2->ac.wd_expired) | |
617 | val->intval = POWER_SUPPLY_HEALTH_DEAD; | |
618 | else if (pm2->flags.main_thermal_prot) | |
619 | val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; | |
789ca7b4 RK |
620 | else if (pm2->flags.ovv) |
621 | val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; | |
01ec8c54 MJ |
622 | else |
623 | val->intval = POWER_SUPPLY_HEALTH_GOOD; | |
624 | break; | |
625 | case POWER_SUPPLY_PROP_ONLINE: | |
626 | val->intval = pm2->ac.charger_online; | |
627 | break; | |
628 | case POWER_SUPPLY_PROP_PRESENT: | |
629 | val->intval = pm2->ac.charger_connected; | |
630 | break; | |
01ec8c54 MJ |
631 | case POWER_SUPPLY_PROP_VOLTAGE_AVG: |
632 | pm2->ac.cv_active = pm2xxx_charger_get_ac_cv(pm2); | |
633 | val->intval = pm2->ac.cv_active; | |
634 | break; | |
01ec8c54 MJ |
635 | default: |
636 | return -EINVAL; | |
637 | } | |
638 | return 0; | |
639 | } | |
640 | ||
641 | static int pm2xxx_charging_init(struct pm2xxx_charger *pm2) | |
642 | { | |
643 | int ret = 0; | |
644 | ||
645 | /* enable CC and CV watchdog */ | |
646 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG3, | |
647 | (PM2XXX_CH_WD_CV_PHASE_60MIN | PM2XXX_CH_WD_CC_PHASE_60MIN)); | |
648 | if( ret < 0) | |
649 | return ret; | |
650 | ||
651 | /* enable precharge watchdog */ | |
652 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG4, | |
653 | PM2XXX_CH_WD_PRECH_PHASE_60MIN); | |
654 | ||
006f82d6 OC |
655 | /* Disable auto timeout */ |
656 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG5, | |
657 | PM2XXX_CH_WD_AUTO_TIMEOUT_20MIN); | |
658 | ||
659 | /* | |
660 | * EOC current level = 100mA | |
661 | * Precharge current level = 100mA | |
662 | * CC current level = 1000mA | |
663 | */ | |
664 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, | |
665 | (PM2XXX_DIR_CH_CC_CURRENT_1000MA | | |
666 | PM2XXX_CH_PRECH_CURRENT_100MA | | |
667 | PM2XXX_CH_EOC_CURRENT_100MA)); | |
668 | ||
669 | /* | |
670 | * recharge threshold = 3.8V | |
671 | * Precharge to CC threshold = 2.9V | |
672 | */ | |
673 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG7, | |
674 | (PM2XXX_CH_PRECH_VOL_2_9 | PM2XXX_CH_VRESUME_VOL_3_8)); | |
675 | ||
676 | /* float voltage charger level = 4.2V */ | |
677 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, | |
678 | PM2XXX_CH_VOLT_4_2); | |
679 | ||
680 | /* Voltage drop between VBAT and VSYS in HW charging = 300mV */ | |
681 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG9, | |
682 | (PM2XXX_CH_150MV_DROP_300MV | PM2XXX_CHARCHING_INFO_DIS | | |
683 | PM2XXX_CH_CC_REDUCED_CURRENT_IDENT | | |
684 | PM2XXX_CH_CC_MODEDROP_DIS)); | |
685 | ||
686 | /* Input charger level of over voltage = 10V */ | |
687 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR2, | |
688 | PM2XXX_VPWR2_OVV_10); | |
689 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_VOLT_VPWR1, | |
690 | PM2XXX_VPWR1_OVV_10); | |
691 | ||
692 | /* Input charger drop */ | |
693 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR2, | |
694 | (PM2XXX_VPWR2_HW_OPT_DIS | PM2XXX_VPWR2_VALID_DIS | | |
695 | PM2XXX_VPWR2_DROP_DIS)); | |
696 | ret = pm2xxx_reg_write(pm2, PM2XXX_INP_DROP_VPWR1, | |
697 | (PM2XXX_VPWR1_HW_OPT_DIS | PM2XXX_VPWR1_VALID_DIS | | |
698 | PM2XXX_VPWR1_DROP_DIS)); | |
699 | ||
700 | /* Disable battery low monitoring */ | |
701 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_LOW_LEV_COMP_REG, | |
e41f39ea | 702 | PM2XXX_VBAT_LOW_MONITORING_ENA); |
006f82d6 | 703 | |
01ec8c54 MJ |
704 | return ret; |
705 | } | |
706 | ||
707 | static int pm2xxx_charger_ac_en(struct ux500_charger *charger, | |
708 | int enable, int vset, int iset) | |
709 | { | |
710 | int ret; | |
711 | int volt_index; | |
712 | int curr_index; | |
713 | u8 val; | |
714 | ||
715 | struct pm2xxx_charger *pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
716 | ||
717 | if (enable) { | |
718 | if (!pm2->ac.charger_connected) { | |
719 | dev_dbg(pm2->dev, "AC charger not connected\n"); | |
720 | return -ENXIO; | |
721 | } | |
722 | ||
723 | dev_dbg(pm2->dev, "Enable AC: %dmV %dmA\n", vset, iset); | |
724 | if (!pm2->vddadc_en_ac) { | |
508b2c13 SK |
725 | ret = regulator_enable(pm2->regu); |
726 | if (ret) | |
727 | dev_warn(pm2->dev, | |
728 | "Failed to enable vddadc regulator\n"); | |
729 | else | |
730 | pm2->vddadc_en_ac = true; | |
01ec8c54 MJ |
731 | } |
732 | ||
733 | ret = pm2xxx_charging_init(pm2); | |
734 | if (ret < 0) { | |
735 | dev_err(pm2->dev, "%s charging init failed\n", | |
736 | __func__); | |
737 | goto error_occured; | |
738 | } | |
739 | ||
740 | volt_index = pm2xxx_voltage_to_regval(vset); | |
741 | curr_index = pm2xxx_current_to_regval(iset); | |
742 | ||
743 | if (volt_index < 0 || curr_index < 0) { | |
744 | dev_err(pm2->dev, | |
745 | "Charger voltage or current too high, " | |
746 | "charging not started\n"); | |
747 | return -ENXIO; | |
748 | } | |
749 | ||
750 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG8, &val); | |
e41f39ea RK |
751 | if (ret < 0) { |
752 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
753 | goto error_occured; | |
754 | } | |
755 | val &= ~PM2XXX_CH_VOLT_MASK; | |
756 | val |= volt_index; | |
757 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG8, val); | |
758 | if (ret < 0) { | |
759 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
760 | goto error_occured; | |
01ec8c54 MJ |
761 | } |
762 | ||
763 | ret = pm2xxx_reg_read(pm2, PM2XXX_BATT_CTRL_REG6, &val); | |
e41f39ea RK |
764 | if (ret < 0) { |
765 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
766 | goto error_occured; | |
767 | } | |
768 | val &= ~PM2XXX_DIR_CH_CC_CURRENT_MASK; | |
769 | val |= curr_index; | |
770 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_CTRL_REG6, val); | |
771 | if (ret < 0) { | |
772 | dev_err(pm2->dev, "%s pm2xxx write failed\n", __func__); | |
773 | goto error_occured; | |
01ec8c54 MJ |
774 | } |
775 | ||
776 | if (!pm2->bat->enable_overshoot) { | |
777 | ret = pm2xxx_reg_read(pm2, PM2XXX_LED_CTRL_REG, &val); | |
e41f39ea RK |
778 | if (ret < 0) { |
779 | dev_err(pm2->dev, "%s pm2xxx read failed\n", | |
780 | __func__); | |
781 | goto error_occured; | |
782 | } | |
783 | val |= PM2XXX_ANTI_OVERSHOOT_EN; | |
784 | ret = pm2xxx_reg_write(pm2, PM2XXX_LED_CTRL_REG, val); | |
785 | if (ret < 0) { | |
786 | dev_err(pm2->dev, "%s pm2xxx write failed\n", | |
787 | __func__); | |
788 | goto error_occured; | |
01ec8c54 | 789 | } |
01ec8c54 MJ |
790 | } |
791 | ||
792 | ret = pm2xxx_charging_enable_mngt(pm2); | |
e41f39ea RK |
793 | if (ret < 0) { |
794 | dev_err(pm2->dev, "Failed to enable" | |
795 | "pm2xxx ac charger\n"); | |
01ec8c54 MJ |
796 | goto error_occured; |
797 | } | |
798 | ||
799 | pm2->ac.charger_online = 1; | |
800 | } else { | |
801 | pm2->ac.charger_online = 0; | |
802 | pm2->ac.wd_expired = false; | |
803 | ||
804 | /* Disable regulator if enabled */ | |
805 | if (pm2->vddadc_en_ac) { | |
806 | regulator_disable(pm2->regu); | |
807 | pm2->vddadc_en_ac = false; | |
808 | } | |
809 | ||
810 | ret = pm2xxx_charging_disable_mngt(pm2); | |
e41f39ea RK |
811 | if (ret < 0) { |
812 | dev_err(pm2->dev, "failed to disable" | |
813 | "pm2xxx ac charger\n"); | |
814 | goto error_occured; | |
01ec8c54 MJ |
815 | } |
816 | ||
817 | dev_dbg(pm2->dev, "PM2301: " "Disabled AC charging\n"); | |
818 | } | |
819 | power_supply_changed(&pm2->ac_chg.psy); | |
820 | ||
821 | error_occured: | |
822 | return ret; | |
823 | } | |
824 | ||
825 | static int pm2xxx_charger_watchdog_kick(struct ux500_charger *charger) | |
826 | { | |
827 | int ret; | |
828 | struct pm2xxx_charger *pm2; | |
829 | ||
830 | if (charger->psy.type == POWER_SUPPLY_TYPE_MAINS) | |
831 | pm2 = to_pm2xxx_charger_ac_device_info(charger); | |
832 | else | |
833 | return -ENXIO; | |
834 | ||
835 | ret = pm2xxx_reg_write(pm2, PM2XXX_BATT_WD_KICK, WD_TIMER); | |
836 | if (ret) | |
837 | dev_err(pm2->dev, "Failed to kick WD!\n"); | |
838 | ||
839 | return ret; | |
840 | } | |
841 | ||
842 | static void pm2xxx_charger_ac_work(struct work_struct *work) | |
843 | { | |
844 | struct pm2xxx_charger *pm2 = container_of(work, | |
845 | struct pm2xxx_charger, ac_work); | |
846 | ||
847 | ||
848 | power_supply_changed(&pm2->ac_chg.psy); | |
849 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
850 | }; | |
851 | ||
789ca7b4 RK |
852 | static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work) |
853 | { | |
854 | u8 reg_value; | |
855 | ||
856 | struct pm2xxx_charger *pm2 = container_of(work, | |
857 | struct pm2xxx_charger, check_hw_failure_work.work); | |
858 | ||
859 | if (pm2->flags.ovv) { | |
860 | pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT4, ®_value); | |
861 | ||
862 | if (!(reg_value & (PM2XXX_INT4_S_ITVPWR1OVV | | |
863 | PM2XXX_INT4_S_ITVPWR2OVV))) { | |
864 | pm2->flags.ovv = false; | |
865 | power_supply_changed(&pm2->ac_chg.psy); | |
866 | } | |
867 | } | |
868 | ||
869 | /* If we still have a failure, schedule a new check */ | |
870 | if (pm2->flags.ovv) { | |
871 | queue_delayed_work(pm2->charger_wq, | |
872 | &pm2->check_hw_failure_work, round_jiffies(HZ)); | |
873 | } | |
874 | } | |
875 | ||
01ec8c54 MJ |
876 | static void pm2xxx_charger_check_main_thermal_prot_work( |
877 | struct work_struct *work) | |
878 | { | |
da9e83d4 RK |
879 | int ret; |
880 | u8 val; | |
881 | ||
882 | struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger, | |
883 | check_main_thermal_prot_work); | |
884 | ||
885 | /* Check if die temp warning is still active */ | |
886 | ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val); | |
887 | if (ret < 0) { | |
888 | dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__); | |
889 | return; | |
890 | } | |
891 | if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE | |
892 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE)) | |
893 | pm2->flags.main_thermal_prot = true; | |
894 | else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL | |
895 | | PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL)) | |
896 | pm2->flags.main_thermal_prot = false; | |
897 | ||
898 | power_supply_changed(&pm2->ac_chg.psy); | |
899 | } | |
01ec8c54 | 900 | |
006f82d6 OC |
901 | static struct pm2xxx_interrupts pm2xxx_int = { |
902 | .handler[0] = pm2_int_reg0, | |
903 | .handler[1] = pm2_int_reg1, | |
904 | .handler[2] = pm2_int_reg2, | |
905 | .handler[3] = pm2_int_reg3, | |
906 | .handler[4] = pm2_int_reg4, | |
907 | .handler[5] = pm2_int_reg5, | |
908 | }; | |
909 | ||
01ec8c54 MJ |
910 | static struct pm2xxx_irq pm2xxx_charger_irq[] = { |
911 | {"PM2XXX_IRQ_INT", pm2xxx_irq_int}, | |
912 | }; | |
913 | ||
6b170807 LPC |
914 | #ifdef CONFIG_PM |
915 | ||
916 | #ifdef CONFIG_PM_SLEEP | |
917 | ||
918 | static int pm2xxx_wall_charger_resume(struct device *dev) | |
01ec8c54 | 919 | { |
6b170807 | 920 | struct i2c_client *i2c_client = to_i2c_client(dev); |
49fddeec MBZ |
921 | struct pm2xxx_charger *pm2; |
922 | ||
923 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
924 | set_lpn_pin(pm2); | |
925 | ||
926 | /* If we still have a HW failure, schedule a new check */ | |
927 | if (pm2->flags.ovv) | |
928 | queue_delayed_work(pm2->charger_wq, | |
929 | &pm2->check_hw_failure_work, 0); | |
930 | ||
01ec8c54 MJ |
931 | return 0; |
932 | } | |
933 | ||
6b170807 | 934 | static int pm2xxx_wall_charger_suspend(struct device *dev) |
01ec8c54 | 935 | { |
6b170807 | 936 | struct i2c_client *i2c_client = to_i2c_client(dev); |
49fddeec MBZ |
937 | struct pm2xxx_charger *pm2; |
938 | ||
939 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(i2c_client); | |
940 | clear_lpn_pin(pm2); | |
941 | ||
942 | /* Cancel any pending HW failure check */ | |
943 | if (delayed_work_pending(&pm2->check_hw_failure_work)) | |
944 | cancel_delayed_work(&pm2->check_hw_failure_work); | |
945 | ||
946 | flush_work(&pm2->ac_work); | |
947 | flush_work(&pm2->check_main_thermal_prot_work); | |
948 | ||
01ec8c54 MJ |
949 | return 0; |
950 | } | |
951 | ||
6b170807 LPC |
952 | #endif |
953 | ||
954 | #ifdef CONFIG_PM_RUNTIME | |
955 | ||
aee2b846 LJ |
956 | static int pm2xxx_runtime_suspend(struct device *dev) |
957 | { | |
958 | struct i2c_client *pm2xxx_i2c_client = to_i2c_client(dev); | |
959 | struct pm2xxx_charger *pm2; | |
aee2b846 LJ |
960 | |
961 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client); | |
aee2b846 LJ |
962 | clear_lpn_pin(pm2); |
963 | ||
c8024234 | 964 | return 0; |
aee2b846 LJ |
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; | |
aee2b846 LJ |
971 | |
972 | pm2 = (struct pm2xxx_charger *)i2c_get_clientdata(pm2xxx_i2c_client); | |
aee2b846 LJ |
973 | |
974 | if (gpio_is_valid(pm2->lpn_pin) && gpio_get_value(pm2->lpn_pin) == 0) | |
975 | set_lpn_pin(pm2); | |
976 | ||
c8024234 | 977 | return 0; |
aee2b846 LJ |
978 | } |
979 | ||
6b170807 LPC |
980 | #endif |
981 | ||
aee2b846 | 982 | static const struct dev_pm_ops pm2xxx_pm_ops = { |
6b170807 LPC |
983 | SET_SYSTEM_SLEEP_PM_OPS(pm2xxx_wall_charger_suspend, |
984 | pm2xxx_wall_charger_resume) | |
985 | SET_RUNTIME_PM_OPS(pm2xxx_runtime_suspend, pm2xxx_runtime_resume, NULL) | |
aee2b846 LJ |
986 | }; |
987 | #define PM2XXX_PM_OPS (&pm2xxx_pm_ops) | |
988 | #else | |
989 | #define PM2XXX_PM_OPS NULL | |
990 | #endif | |
991 | ||
116c326e | 992 | static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client, |
01ec8c54 MJ |
993 | const struct i2c_device_id *id) |
994 | { | |
995 | struct pm2xxx_platform_data *pl_data = i2c_client->dev.platform_data; | |
996 | struct pm2xxx_charger *pm2; | |
997 | int ret = 0; | |
998 | u8 val; | |
f4095a0f | 999 | int i; |
01ec8c54 | 1000 | |
df311333 AL |
1001 | if (!pl_data) { |
1002 | dev_err(&i2c_client->dev, "No platform data supplied\n"); | |
1003 | return -EINVAL; | |
1004 | } | |
1005 | ||
01ec8c54 MJ |
1006 | pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL); |
1007 | if (!pm2) { | |
df311333 | 1008 | dev_err(&i2c_client->dev, "pm2xxx_charger allocation failed\n"); |
01ec8c54 MJ |
1009 | return -ENOMEM; |
1010 | } | |
1011 | ||
1012 | /* get parent data */ | |
1013 | pm2->dev = &i2c_client->dev; | |
01ec8c54 | 1014 | |
006f82d6 OC |
1015 | pm2->pm2_int = &pm2xxx_int; |
1016 | ||
01ec8c54 MJ |
1017 | /* get charger spcific platform data */ |
1018 | if (!pl_data->wall_charger) { | |
1019 | dev_err(pm2->dev, "no charger platform data supplied\n"); | |
1020 | ret = -EINVAL; | |
1021 | goto free_device_info; | |
1022 | } | |
1023 | ||
1024 | pm2->pdata = pl_data->wall_charger; | |
1025 | ||
1026 | /* get battery specific platform data */ | |
1027 | if (!pl_data->battery) { | |
1028 | dev_err(pm2->dev, "no battery platform data supplied\n"); | |
1029 | ret = -EINVAL; | |
1030 | goto free_device_info; | |
1031 | } | |
1032 | ||
1033 | pm2->bat = pl_data->battery; | |
1034 | ||
1035 | if (!i2c_check_functionality(i2c_client->adapter, | |
1036 | I2C_FUNC_SMBUS_BYTE_DATA | | |
1037 | I2C_FUNC_SMBUS_READ_WORD_DATA)) { | |
1038 | ret = -ENODEV; | |
1039 | dev_info(pm2->dev, "pm2301 i2c_check_functionality failed\n"); | |
1040 | goto free_device_info; | |
1041 | } | |
1042 | ||
1043 | pm2->config.pm2xxx_i2c = i2c_client; | |
1044 | pm2->config.pm2xxx_id = (struct i2c_device_id *) id; | |
1045 | i2c_set_clientdata(i2c_client, pm2); | |
1046 | ||
1047 | /* AC supply */ | |
1048 | /* power_supply base class */ | |
1049 | pm2->ac_chg.psy.name = pm2->pdata->label; | |
1050 | pm2->ac_chg.psy.type = POWER_SUPPLY_TYPE_MAINS; | |
1051 | pm2->ac_chg.psy.properties = pm2xxx_charger_ac_props; | |
1052 | pm2->ac_chg.psy.num_properties = ARRAY_SIZE(pm2xxx_charger_ac_props); | |
1053 | pm2->ac_chg.psy.get_property = pm2xxx_charger_ac_get_property; | |
1054 | pm2->ac_chg.psy.supplied_to = pm2->pdata->supplied_to; | |
1055 | pm2->ac_chg.psy.num_supplicants = pm2->pdata->num_supplicants; | |
1056 | /* pm2xxx_charger sub-class */ | |
1057 | pm2->ac_chg.ops.enable = &pm2xxx_charger_ac_en; | |
1058 | pm2->ac_chg.ops.kick_wd = &pm2xxx_charger_watchdog_kick; | |
1059 | pm2->ac_chg.ops.update_curr = &pm2xxx_charger_update_charger_current; | |
1060 | pm2->ac_chg.max_out_volt = pm2xxx_charger_voltage_map[ | |
1061 | ARRAY_SIZE(pm2xxx_charger_voltage_map) - 1]; | |
1062 | pm2->ac_chg.max_out_curr = pm2xxx_charger_current_map[ | |
1063 | ARRAY_SIZE(pm2xxx_charger_current_map) - 1]; | |
e07a5645 | 1064 | pm2->ac_chg.wdt_refresh = WD_KICK_INTERVAL; |
006f82d6 | 1065 | pm2->ac_chg.enabled = true; |
e07a5645 | 1066 | pm2->ac_chg.external = true; |
01ec8c54 MJ |
1067 | |
1068 | /* Create a work queue for the charger */ | |
c509a62c | 1069 | pm2->charger_wq = create_singlethread_workqueue("pm2xxx_charger_wq"); |
01ec8c54 | 1070 | if (pm2->charger_wq == NULL) { |
c509a62c | 1071 | ret = -ENOMEM; |
01ec8c54 MJ |
1072 | dev_err(pm2->dev, "failed to create work queue\n"); |
1073 | goto free_device_info; | |
1074 | } | |
1075 | ||
1076 | /* Init work for charger detection */ | |
1077 | INIT_WORK(&pm2->ac_work, pm2xxx_charger_ac_work); | |
1078 | ||
1079 | /* Init work for checking HW status */ | |
1080 | INIT_WORK(&pm2->check_main_thermal_prot_work, | |
1081 | pm2xxx_charger_check_main_thermal_prot_work); | |
1082 | ||
789ca7b4 RK |
1083 | /* Init work for HW failure check */ |
1084 | INIT_DEFERRABLE_WORK(&pm2->check_hw_failure_work, | |
1085 | pm2xxx_charger_check_hw_failure_work); | |
1086 | ||
01ec8c54 MJ |
1087 | /* |
1088 | * VDD ADC supply needs to be enabled from this driver when there | |
1089 | * is a charger connected to avoid erroneous BTEMP_HIGH/LOW | |
1090 | * interrupts during charging | |
1091 | */ | |
1092 | pm2->regu = regulator_get(pm2->dev, "vddadc"); | |
1093 | if (IS_ERR(pm2->regu)) { | |
1094 | ret = PTR_ERR(pm2->regu); | |
1095 | dev_err(pm2->dev, "failed to get vddadc regulator\n"); | |
1096 | goto free_charger_wq; | |
1097 | } | |
1098 | ||
1099 | /* Register AC charger class */ | |
1100 | ret = power_supply_register(pm2->dev, &pm2->ac_chg.psy); | |
1101 | if (ret) { | |
1102 | dev_err(pm2->dev, "failed to register AC charger\n"); | |
1103 | goto free_regulator; | |
1104 | } | |
1105 | ||
1106 | /* Register interrupts */ | |
f4095a0f B |
1107 | ret = request_threaded_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), |
1108 | NULL, | |
01ec8c54 MJ |
1109 | pm2xxx_charger_irq[0].isr, |
1110 | pm2->pdata->irq_type, | |
1111 | pm2xxx_charger_irq[0].name, pm2); | |
1112 | ||
1113 | if (ret != 0) { | |
1114 | dev_err(pm2->dev, "failed to request %s IRQ %d: %d\n", | |
f4095a0f B |
1115 | pm2xxx_charger_irq[0].name, |
1116 | gpio_to_irq(pm2->pdata->gpio_irq_number), ret); | |
01ec8c54 MJ |
1117 | goto unregister_pm2xxx_charger; |
1118 | } | |
1119 | ||
aee2b846 LJ |
1120 | ret = pm_runtime_set_active(pm2->dev); |
1121 | if (ret) | |
1122 | dev_err(pm2->dev, "set active Error\n"); | |
3988043b | 1123 | |
aee2b846 LJ |
1124 | pm_runtime_enable(pm2->dev); |
1125 | pm_runtime_set_autosuspend_delay(pm2->dev, PM2XXX_AUTOSUSPEND_DELAY); | |
1126 | pm_runtime_use_autosuspend(pm2->dev); | |
1127 | pm_runtime_resume(pm2->dev); | |
1128 | ||
d4f510f6 | 1129 | /* pm interrupt can wake up system */ |
f4095a0f | 1130 | ret = enable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1131 | if (ret) { |
1132 | dev_err(pm2->dev, "failed to set irq wake\n"); | |
1133 | goto unregister_pm2xxx_interrupt; | |
3988043b | 1134 | } |
01ec8c54 | 1135 | |
3988043b LJ |
1136 | mutex_init(&pm2->lock); |
1137 | ||
a21e22f2 | 1138 | if (gpio_is_valid(pm2->pdata->lpn_gpio)) { |
1139 | /* get lpn GPIO from platform data */ | |
1140 | pm2->lpn_pin = pm2->pdata->lpn_gpio; | |
3988043b | 1141 | |
a21e22f2 | 1142 | /* |
1143 | * Charger detection mechanism requires pulling up the LPN pin | |
1144 | * while i2c communication if Charger is not connected | |
1145 | * LPN pin of PM2301 is GPIO60 of AB9540 | |
1146 | */ | |
1147 | ret = gpio_request(pm2->lpn_pin, "pm2301_lpm_gpio"); | |
1148 | ||
1149 | if (ret < 0) { | |
1150 | dev_err(pm2->dev, "pm2301_lpm_gpio request failed\n"); | |
1151 | goto disable_pm2_irq_wake; | |
1152 | } | |
1153 | ret = gpio_direction_output(pm2->lpn_pin, 0); | |
1154 | if (ret < 0) { | |
1155 | dev_err(pm2->dev, "pm2301_lpm_gpio direction failed\n"); | |
1156 | goto free_gpio; | |
1157 | } | |
1158 | set_lpn_pin(pm2); | |
3988043b LJ |
1159 | } |
1160 | ||
f4095a0f B |
1161 | /* read interrupt registers */ |
1162 | for (i = 0; i < PM2XXX_NUM_INT_REG; i++) | |
1163 | pm2xxx_reg_read(pm2, | |
1164 | pm2xxx_interrupt_registers[i], | |
1165 | &val); | |
1166 | ||
01ec8c54 MJ |
1167 | ret = pm2xxx_charger_detection(pm2, &val); |
1168 | ||
1169 | if ((ret == 0) && val) { | |
1170 | pm2->ac.charger_connected = 1; | |
54fbbb62 PF |
1171 | ab8500_override_turn_on_stat(~AB8500_POW_KEY_1_ON, |
1172 | AB8500_MAIN_CH_DET); | |
01ec8c54 MJ |
1173 | pm2->ac_conn = true; |
1174 | power_supply_changed(&pm2->ac_chg.psy); | |
1175 | sysfs_notify(&pm2->ac_chg.psy.dev->kobj, NULL, "present"); | |
1176 | } | |
1177 | ||
1178 | return 0; | |
1179 | ||
3988043b | 1180 | free_gpio: |
a21e22f2 | 1181 | if (gpio_is_valid(pm2->lpn_pin)) |
1182 | gpio_free(pm2->lpn_pin); | |
d4f510f6 | 1183 | disable_pm2_irq_wake: |
f4095a0f | 1184 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 RK |
1185 | unregister_pm2xxx_interrupt: |
1186 | /* disable interrupt */ | |
f4095a0f | 1187 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1188 | unregister_pm2xxx_charger: |
1189 | /* unregister power supply */ | |
1190 | power_supply_unregister(&pm2->ac_chg.psy); | |
1191 | free_regulator: | |
1192 | /* disable the regulator */ | |
1193 | regulator_put(pm2->regu); | |
1194 | free_charger_wq: | |
1195 | destroy_workqueue(pm2->charger_wq); | |
1196 | free_device_info: | |
1197 | kfree(pm2); | |
d4f510f6 | 1198 | |
01ec8c54 MJ |
1199 | return ret; |
1200 | } | |
1201 | ||
116c326e | 1202 | static int pm2xxx_wall_charger_remove(struct i2c_client *i2c_client) |
01ec8c54 MJ |
1203 | { |
1204 | struct pm2xxx_charger *pm2 = i2c_get_clientdata(i2c_client); | |
1205 | ||
aee2b846 LJ |
1206 | /* Disable pm_runtime */ |
1207 | pm_runtime_disable(pm2->dev); | |
01ec8c54 MJ |
1208 | /* Disable AC charging */ |
1209 | pm2xxx_charger_ac_en(&pm2->ac_chg, false, 0, 0); | |
1210 | ||
d4f510f6 | 1211 | /* Disable wake by pm interrupt */ |
f4095a0f | 1212 | disable_irq_wake(gpio_to_irq(pm2->pdata->gpio_irq_number)); |
d4f510f6 | 1213 | |
01ec8c54 | 1214 | /* Disable interrupts */ |
f4095a0f | 1215 | free_irq(gpio_to_irq(pm2->pdata->gpio_irq_number), pm2); |
01ec8c54 MJ |
1216 | |
1217 | /* Delete the work queue */ | |
1218 | destroy_workqueue(pm2->charger_wq); | |
1219 | ||
1220 | flush_scheduled_work(); | |
1221 | ||
1222 | /* disable the regulator */ | |
1223 | regulator_put(pm2->regu); | |
1224 | ||
1225 | power_supply_unregister(&pm2->ac_chg.psy); | |
1226 | ||
a21e22f2 | 1227 | if (gpio_is_valid(pm2->lpn_pin)) |
1228 | gpio_free(pm2->lpn_pin); | |
3988043b | 1229 | |
01ec8c54 MJ |
1230 | kfree(pm2); |
1231 | ||
1232 | return 0; | |
1233 | } | |
1234 | ||
1235 | static const struct i2c_device_id pm2xxx_id[] = { | |
1236 | { "pm2301", 0 }, | |
1237 | { } | |
1238 | }; | |
1239 | ||
1240 | MODULE_DEVICE_TABLE(i2c, pm2xxx_id); | |
1241 | ||
1242 | static struct i2c_driver pm2xxx_charger_driver = { | |
1243 | .probe = pm2xxx_wall_charger_probe, | |
116c326e | 1244 | .remove = pm2xxx_wall_charger_remove, |
01ec8c54 MJ |
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"); | |
dccab609 | 1268 | MODULE_ALIAS("i2c:pm2xxx-charger"); |
01ec8c54 | 1269 | MODULE_DESCRIPTION("PM2xxx charger management driver"); |