Commit | Line | Data |
---|---|---|
843735b7 RP |
1 | /* |
2 | * axp288_charger.c - X-power AXP288 PMIC Charger driver | |
3 | * | |
4 | * Copyright (C) 2014 Intel Corporation | |
5 | * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | */ | |
16 | ||
6c4c9a9a | 17 | #include <linux/acpi.h> |
843735b7 RP |
18 | #include <linux/module.h> |
19 | #include <linux/device.h> | |
20 | #include <linux/regmap.h> | |
21 | #include <linux/workqueue.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/platform_device.h> | |
24 | #include <linux/usb/otg.h> | |
25 | #include <linux/notifier.h> | |
26 | #include <linux/power_supply.h> | |
843735b7 RP |
27 | #include <linux/property.h> |
28 | #include <linux/mfd/axp20x.h> | |
29 | #include <linux/extcon.h> | |
30 | ||
31 | #define PS_STAT_VBUS_TRIGGER (1 << 0) | |
32 | #define PS_STAT_BAT_CHRG_DIR (1 << 2) | |
33 | #define PS_STAT_VBAT_ABOVE_VHOLD (1 << 3) | |
34 | #define PS_STAT_VBUS_VALID (1 << 4) | |
35 | #define PS_STAT_VBUS_PRESENT (1 << 5) | |
36 | ||
37 | #define CHRG_STAT_BAT_SAFE_MODE (1 << 3) | |
38 | #define CHRG_STAT_BAT_VALID (1 << 4) | |
39 | #define CHRG_STAT_BAT_PRESENT (1 << 5) | |
40 | #define CHRG_STAT_CHARGING (1 << 6) | |
41 | #define CHRG_STAT_PMIC_OTP (1 << 7) | |
42 | ||
43 | #define VBUS_ISPOUT_CUR_LIM_MASK 0x03 | |
44 | #define VBUS_ISPOUT_CUR_LIM_BIT_POS 0 | |
45 | #define VBUS_ISPOUT_CUR_LIM_900MA 0x0 /* 900mA */ | |
46 | #define VBUS_ISPOUT_CUR_LIM_1500MA 0x1 /* 1500mA */ | |
47 | #define VBUS_ISPOUT_CUR_LIM_2000MA 0x2 /* 2000mA */ | |
48 | #define VBUS_ISPOUT_CUR_NO_LIM 0x3 /* 2500mA */ | |
49 | #define VBUS_ISPOUT_VHOLD_SET_MASK 0x31 | |
50 | #define VBUS_ISPOUT_VHOLD_SET_BIT_POS 0x3 | |
51 | #define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */ | |
52 | #define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */ | |
53 | #define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */ | |
54 | #define VBUS_ISPOUT_VBUS_PATH_DIS (1 << 7) | |
55 | ||
56 | #define CHRG_CCCV_CC_MASK 0xf /* 4 bits */ | |
57 | #define CHRG_CCCV_CC_BIT_POS 0 | |
58 | #define CHRG_CCCV_CC_OFFSET 200 /* 200mA */ | |
59 | #define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */ | |
60 | #define CHRG_CCCV_ITERM_20P (1 << 4) /* 20% of CC */ | |
61 | #define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */ | |
62 | #define CHRG_CCCV_CV_BIT_POS 5 | |
63 | #define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */ | |
64 | #define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */ | |
65 | #define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */ | |
66 | #define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */ | |
67 | #define CHRG_CCCV_CHG_EN (1 << 7) | |
68 | ||
69 | #define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */ | |
70 | #define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */ | |
71 | #define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */ | |
72 | #define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */ | |
73 | #define CNTL2_CHGLED_TYPEB (1 << 4) | |
74 | #define CNTL2_CHG_OUT_TURNON (1 << 5) | |
75 | #define CNTL2_PC_TIMEOUT_MASK 0xC0 | |
76 | #define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */ | |
77 | #define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */ | |
78 | #define CNTL2_PC_TIMEOUT_70MINS 0x3 | |
79 | ||
80 | #define CHRG_ILIM_TEMP_LOOP_EN (1 << 3) | |
81 | #define CHRG_VBUS_ILIM_MASK 0xf0 | |
82 | #define CHRG_VBUS_ILIM_BIT_POS 4 | |
83 | #define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */ | |
84 | #define CHRG_VBUS_ILIM_500MA 0x1 /* 500mA */ | |
85 | #define CHRG_VBUS_ILIM_900MA 0x2 /* 900mA */ | |
86 | #define CHRG_VBUS_ILIM_1500MA 0x3 /* 1500mA */ | |
87 | #define CHRG_VBUS_ILIM_2000MA 0x4 /* 2000mA */ | |
88 | #define CHRG_VBUS_ILIM_2500MA 0x5 /* 2500mA */ | |
89 | #define CHRG_VBUS_ILIM_3000MA 0x6 /* 3000mA */ | |
90 | ||
91 | #define CHRG_VLTFC_0C 0xA5 /* 0 DegC */ | |
92 | #define CHRG_VHTFC_45C 0x1F /* 45 DegC */ | |
93 | ||
843735b7 RP |
94 | #define FG_CNTL_OCV_ADJ_EN (1 << 3) |
95 | ||
96 | #define CV_4100MV 4100 /* 4100mV */ | |
97 | #define CV_4150MV 4150 /* 4150mV */ | |
98 | #define CV_4200MV 4200 /* 4200mV */ | |
99 | #define CV_4350MV 4350 /* 4350mV */ | |
100 | ||
101 | #define CC_200MA 200 /* 200mA */ | |
102 | #define CC_600MA 600 /* 600mA */ | |
103 | #define CC_800MA 800 /* 800mA */ | |
104 | #define CC_1000MA 1000 /* 1000mA */ | |
105 | #define CC_1600MA 1600 /* 1600mA */ | |
106 | #define CC_2000MA 2000 /* 2000mA */ | |
107 | ||
108 | #define ILIM_100MA 100 /* 100mA */ | |
109 | #define ILIM_500MA 500 /* 500mA */ | |
110 | #define ILIM_900MA 900 /* 900mA */ | |
111 | #define ILIM_1500MA 1500 /* 1500mA */ | |
112 | #define ILIM_2000MA 2000 /* 2000mA */ | |
113 | #define ILIM_2500MA 2500 /* 2500mA */ | |
114 | #define ILIM_3000MA 3000 /* 3000mA */ | |
115 | ||
116 | #define AXP288_EXTCON_DEV_NAME "axp288_extcon" | |
6c4c9a9a HG |
117 | #define USB_HOST_EXTCON_HID "INT3496" |
118 | #define USB_HOST_EXTCON_NAME "INT3496:00" | |
843735b7 | 119 | |
577b1f06 HG |
120 | static const unsigned int cable_ids[] = |
121 | { EXTCON_CHG_USB_SDP, EXTCON_CHG_USB_CDP, EXTCON_CHG_USB_DCP }; | |
122 | ||
843735b7 RP |
123 | enum { |
124 | VBUS_OV_IRQ = 0, | |
125 | CHARGE_DONE_IRQ, | |
126 | CHARGE_CHARGING_IRQ, | |
127 | BAT_SAFE_QUIT_IRQ, | |
128 | BAT_SAFE_ENTER_IRQ, | |
129 | QCBTU_IRQ, | |
130 | CBTU_IRQ, | |
131 | QCBTO_IRQ, | |
132 | CBTO_IRQ, | |
133 | CHRG_INTR_END, | |
134 | }; | |
135 | ||
136 | struct axp288_chrg_info { | |
137 | struct platform_device *pdev; | |
843735b7 RP |
138 | struct regmap *regmap; |
139 | struct regmap_irq_chip_data *regmap_irqc; | |
140 | int irq[CHRG_INTR_END]; | |
141 | struct power_supply *psy_usb; | |
142 | struct mutex lock; | |
143 | ||
144 | /* OTG/Host mode */ | |
145 | struct { | |
146 | struct work_struct work; | |
b396cff5 | 147 | struct extcon_dev *cable; |
843735b7 RP |
148 | struct notifier_block id_nb; |
149 | bool id_short; | |
150 | } otg; | |
151 | ||
152 | /* SDP/CDP/DCP USB charging cable notifications */ | |
153 | struct { | |
154 | struct extcon_dev *edev; | |
155 | bool connected; | |
156 | enum power_supply_type chg_type; | |
577b1f06 | 157 | struct notifier_block nb[ARRAY_SIZE(cable_ids)]; |
843735b7 RP |
158 | struct work_struct work; |
159 | } cable; | |
160 | ||
843735b7 RP |
161 | int inlmt; |
162 | int cc; | |
163 | int cv; | |
164 | int max_cc; | |
165 | int max_cv; | |
5c5bcb8c | 166 | int is_charger_enabled; |
843735b7 RP |
167 | }; |
168 | ||
169 | static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc) | |
170 | { | |
171 | u8 reg_val; | |
172 | int ret; | |
173 | ||
174 | if (cc < CHRG_CCCV_CC_OFFSET) | |
175 | cc = CHRG_CCCV_CC_OFFSET; | |
176 | else if (cc > info->max_cc) | |
177 | cc = info->max_cc; | |
178 | ||
179 | reg_val = (cc - CHRG_CCCV_CC_OFFSET) / CHRG_CCCV_CC_LSB_RES; | |
180 | cc = (reg_val * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; | |
181 | reg_val = reg_val << CHRG_CCCV_CC_BIT_POS; | |
182 | ||
183 | ret = regmap_update_bits(info->regmap, | |
184 | AXP20X_CHRG_CTRL1, | |
185 | CHRG_CCCV_CC_MASK, reg_val); | |
186 | if (ret >= 0) | |
187 | info->cc = cc; | |
188 | ||
189 | return ret; | |
190 | } | |
191 | ||
192 | static inline int axp288_charger_set_cv(struct axp288_chrg_info *info, int cv) | |
193 | { | |
194 | u8 reg_val; | |
195 | int ret; | |
196 | ||
197 | if (cv <= CV_4100MV) { | |
198 | reg_val = CHRG_CCCV_CV_4100MV; | |
199 | cv = CV_4100MV; | |
200 | } else if (cv <= CV_4150MV) { | |
201 | reg_val = CHRG_CCCV_CV_4150MV; | |
202 | cv = CV_4150MV; | |
203 | } else if (cv <= CV_4200MV) { | |
204 | reg_val = CHRG_CCCV_CV_4200MV; | |
205 | cv = CV_4200MV; | |
206 | } else { | |
207 | reg_val = CHRG_CCCV_CV_4350MV; | |
208 | cv = CV_4350MV; | |
209 | } | |
210 | ||
211 | reg_val = reg_val << CHRG_CCCV_CV_BIT_POS; | |
212 | ||
213 | ret = regmap_update_bits(info->regmap, | |
214 | AXP20X_CHRG_CTRL1, | |
215 | CHRG_CCCV_CV_MASK, reg_val); | |
216 | ||
217 | if (ret >= 0) | |
218 | info->cv = cv; | |
219 | ||
220 | return ret; | |
221 | } | |
222 | ||
223 | static inline int axp288_charger_set_vbus_inlmt(struct axp288_chrg_info *info, | |
224 | int inlmt) | |
225 | { | |
226 | int ret; | |
227 | unsigned int val; | |
228 | u8 reg_val; | |
229 | ||
230 | /* Read in limit register */ | |
231 | ret = regmap_read(info->regmap, AXP20X_CHRG_BAK_CTRL, &val); | |
232 | if (ret < 0) | |
233 | goto set_inlmt_fail; | |
234 | ||
235 | if (inlmt <= ILIM_100MA) { | |
236 | reg_val = CHRG_VBUS_ILIM_100MA; | |
237 | inlmt = ILIM_100MA; | |
238 | } else if (inlmt <= ILIM_500MA) { | |
239 | reg_val = CHRG_VBUS_ILIM_500MA; | |
240 | inlmt = ILIM_500MA; | |
241 | } else if (inlmt <= ILIM_900MA) { | |
242 | reg_val = CHRG_VBUS_ILIM_900MA; | |
243 | inlmt = ILIM_900MA; | |
244 | } else if (inlmt <= ILIM_1500MA) { | |
245 | reg_val = CHRG_VBUS_ILIM_1500MA; | |
246 | inlmt = ILIM_1500MA; | |
247 | } else if (inlmt <= ILIM_2000MA) { | |
248 | reg_val = CHRG_VBUS_ILIM_2000MA; | |
249 | inlmt = ILIM_2000MA; | |
250 | } else if (inlmt <= ILIM_2500MA) { | |
251 | reg_val = CHRG_VBUS_ILIM_2500MA; | |
252 | inlmt = ILIM_2500MA; | |
253 | } else { | |
254 | reg_val = CHRG_VBUS_ILIM_3000MA; | |
255 | inlmt = ILIM_3000MA; | |
256 | } | |
257 | ||
258 | reg_val = (val & ~CHRG_VBUS_ILIM_MASK) | |
259 | | (reg_val << CHRG_VBUS_ILIM_BIT_POS); | |
260 | ret = regmap_write(info->regmap, AXP20X_CHRG_BAK_CTRL, reg_val); | |
261 | if (ret >= 0) | |
262 | info->inlmt = inlmt; | |
263 | else | |
264 | dev_err(&info->pdev->dev, "charger BAK control %d\n", ret); | |
265 | ||
266 | ||
267 | set_inlmt_fail: | |
268 | return ret; | |
269 | } | |
270 | ||
271 | static int axp288_charger_vbus_path_select(struct axp288_chrg_info *info, | |
272 | bool enable) | |
273 | { | |
274 | int ret; | |
275 | ||
276 | if (enable) | |
277 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, | |
278 | VBUS_ISPOUT_VBUS_PATH_DIS, 0); | |
279 | else | |
280 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, | |
281 | VBUS_ISPOUT_VBUS_PATH_DIS, VBUS_ISPOUT_VBUS_PATH_DIS); | |
282 | ||
283 | if (ret < 0) | |
284 | dev_err(&info->pdev->dev, "axp288 vbus path select %d\n", ret); | |
285 | ||
286 | ||
287 | return ret; | |
288 | } | |
289 | ||
290 | static int axp288_charger_enable_charger(struct axp288_chrg_info *info, | |
291 | bool enable) | |
292 | { | |
293 | int ret; | |
294 | ||
5c5bcb8c | 295 | if ((int)enable == info->is_charger_enabled) |
71851a63 HG |
296 | return 0; |
297 | ||
843735b7 RP |
298 | if (enable) |
299 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, | |
300 | CHRG_CCCV_CHG_EN, CHRG_CCCV_CHG_EN); | |
301 | else | |
302 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, | |
303 | CHRG_CCCV_CHG_EN, 0); | |
304 | if (ret < 0) | |
305 | dev_err(&info->pdev->dev, "axp288 enable charger %d\n", ret); | |
306 | else | |
307 | info->is_charger_enabled = enable; | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
312 | static int axp288_charger_is_present(struct axp288_chrg_info *info) | |
313 | { | |
314 | int ret, present = 0; | |
315 | unsigned int val; | |
316 | ||
317 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
318 | if (ret < 0) | |
319 | return ret; | |
320 | ||
321 | if (val & PS_STAT_VBUS_PRESENT) | |
322 | present = 1; | |
323 | return present; | |
324 | } | |
325 | ||
326 | static int axp288_charger_is_online(struct axp288_chrg_info *info) | |
327 | { | |
328 | int ret, online = 0; | |
329 | unsigned int val; | |
330 | ||
331 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
332 | if (ret < 0) | |
333 | return ret; | |
334 | ||
335 | if (val & PS_STAT_VBUS_VALID) | |
336 | online = 1; | |
337 | return online; | |
338 | } | |
339 | ||
340 | static int axp288_get_charger_health(struct axp288_chrg_info *info) | |
341 | { | |
342 | int ret, pwr_stat, chrg_stat; | |
343 | int health = POWER_SUPPLY_HEALTH_UNKNOWN; | |
344 | unsigned int val; | |
345 | ||
346 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
347 | if ((ret < 0) || !(val & PS_STAT_VBUS_PRESENT)) | |
348 | goto health_read_fail; | |
349 | else | |
350 | pwr_stat = val; | |
351 | ||
352 | ret = regmap_read(info->regmap, AXP20X_PWR_OP_MODE, &val); | |
353 | if (ret < 0) | |
354 | goto health_read_fail; | |
355 | else | |
356 | chrg_stat = val; | |
357 | ||
358 | if (!(pwr_stat & PS_STAT_VBUS_VALID)) | |
359 | health = POWER_SUPPLY_HEALTH_DEAD; | |
360 | else if (chrg_stat & CHRG_STAT_PMIC_OTP) | |
361 | health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
362 | else if (chrg_stat & CHRG_STAT_BAT_SAFE_MODE) | |
363 | health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; | |
364 | else | |
365 | health = POWER_SUPPLY_HEALTH_GOOD; | |
366 | ||
367 | health_read_fail: | |
368 | return health; | |
369 | } | |
370 | ||
371 | static int axp288_charger_usb_set_property(struct power_supply *psy, | |
372 | enum power_supply_property psp, | |
373 | const union power_supply_propval *val) | |
374 | { | |
375 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); | |
376 | int ret = 0; | |
377 | int scaled_val; | |
378 | ||
379 | mutex_lock(&info->lock); | |
380 | ||
381 | switch (psp) { | |
382 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
383 | scaled_val = min(val->intval, info->max_cc); | |
384 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); | |
385 | ret = axp288_charger_set_cc(info, scaled_val); | |
386 | if (ret < 0) | |
387 | dev_warn(&info->pdev->dev, "set charge current failed\n"); | |
388 | break; | |
389 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
390 | scaled_val = min(val->intval, info->max_cv); | |
391 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); | |
392 | ret = axp288_charger_set_cv(info, scaled_val); | |
393 | if (ret < 0) | |
394 | dev_warn(&info->pdev->dev, "set charge voltage failed\n"); | |
395 | break; | |
396 | default: | |
397 | ret = -EINVAL; | |
398 | } | |
399 | ||
400 | mutex_unlock(&info->lock); | |
401 | return ret; | |
402 | } | |
403 | ||
404 | static int axp288_charger_usb_get_property(struct power_supply *psy, | |
405 | enum power_supply_property psp, | |
406 | union power_supply_propval *val) | |
407 | { | |
408 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); | |
409 | int ret = 0; | |
410 | ||
411 | mutex_lock(&info->lock); | |
412 | ||
413 | switch (psp) { | |
414 | case POWER_SUPPLY_PROP_PRESENT: | |
415 | /* Check for OTG case first */ | |
416 | if (info->otg.id_short) { | |
417 | val->intval = 0; | |
418 | break; | |
419 | } | |
420 | ret = axp288_charger_is_present(info); | |
421 | if (ret < 0) | |
422 | goto psy_get_prop_fail; | |
bcd39ba7 | 423 | val->intval = ret; |
843735b7 RP |
424 | break; |
425 | case POWER_SUPPLY_PROP_ONLINE: | |
426 | /* Check for OTG case first */ | |
427 | if (info->otg.id_short) { | |
428 | val->intval = 0; | |
429 | break; | |
430 | } | |
431 | ret = axp288_charger_is_online(info); | |
432 | if (ret < 0) | |
433 | goto psy_get_prop_fail; | |
bcd39ba7 | 434 | val->intval = ret; |
843735b7 RP |
435 | break; |
436 | case POWER_SUPPLY_PROP_HEALTH: | |
437 | val->intval = axp288_get_charger_health(info); | |
438 | break; | |
439 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
440 | val->intval = info->cc * 1000; | |
441 | break; | |
442 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: | |
443 | val->intval = info->max_cc * 1000; | |
444 | break; | |
445 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
446 | val->intval = info->cv * 1000; | |
447 | break; | |
448 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: | |
449 | val->intval = info->max_cv * 1000; | |
450 | break; | |
451 | case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: | |
452 | val->intval = info->inlmt * 1000; | |
453 | break; | |
454 | default: | |
455 | ret = -EINVAL; | |
456 | goto psy_get_prop_fail; | |
457 | } | |
458 | ||
459 | psy_get_prop_fail: | |
460 | mutex_unlock(&info->lock); | |
461 | return ret; | |
462 | } | |
463 | ||
464 | static int axp288_charger_property_is_writeable(struct power_supply *psy, | |
465 | enum power_supply_property psp) | |
466 | { | |
467 | int ret; | |
468 | ||
469 | switch (psp) { | |
470 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
471 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
472 | ret = 1; | |
473 | break; | |
474 | default: | |
475 | ret = 0; | |
476 | } | |
477 | ||
478 | return ret; | |
479 | } | |
480 | ||
481 | static enum power_supply_property axp288_usb_props[] = { | |
482 | POWER_SUPPLY_PROP_PRESENT, | |
483 | POWER_SUPPLY_PROP_ONLINE, | |
484 | POWER_SUPPLY_PROP_TYPE, | |
485 | POWER_SUPPLY_PROP_HEALTH, | |
486 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, | |
487 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, | |
488 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, | |
489 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, | |
490 | POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, | |
491 | }; | |
492 | ||
493 | static const struct power_supply_desc axp288_charger_desc = { | |
494 | .name = "axp288_charger", | |
495 | .type = POWER_SUPPLY_TYPE_USB, | |
496 | .properties = axp288_usb_props, | |
497 | .num_properties = ARRAY_SIZE(axp288_usb_props), | |
498 | .get_property = axp288_charger_usb_get_property, | |
499 | .set_property = axp288_charger_usb_set_property, | |
500 | .property_is_writeable = axp288_charger_property_is_writeable, | |
501 | }; | |
502 | ||
503 | static irqreturn_t axp288_charger_irq_thread_handler(int irq, void *dev) | |
504 | { | |
505 | struct axp288_chrg_info *info = dev; | |
506 | int i; | |
507 | ||
508 | for (i = 0; i < CHRG_INTR_END; i++) { | |
509 | if (info->irq[i] == irq) | |
510 | break; | |
511 | } | |
512 | ||
513 | if (i >= CHRG_INTR_END) { | |
514 | dev_warn(&info->pdev->dev, "spurious interrupt!!\n"); | |
515 | return IRQ_NONE; | |
516 | } | |
517 | ||
518 | switch (i) { | |
519 | case VBUS_OV_IRQ: | |
520 | dev_dbg(&info->pdev->dev, "VBUS Over Voltage INTR\n"); | |
521 | break; | |
522 | case CHARGE_DONE_IRQ: | |
523 | dev_dbg(&info->pdev->dev, "Charging Done INTR\n"); | |
524 | break; | |
525 | case CHARGE_CHARGING_IRQ: | |
526 | dev_dbg(&info->pdev->dev, "Start Charging IRQ\n"); | |
527 | break; | |
528 | case BAT_SAFE_QUIT_IRQ: | |
529 | dev_dbg(&info->pdev->dev, | |
530 | "Quit Safe Mode(restart timer) Charging IRQ\n"); | |
531 | break; | |
532 | case BAT_SAFE_ENTER_IRQ: | |
533 | dev_dbg(&info->pdev->dev, | |
534 | "Enter Safe Mode(timer expire) Charging IRQ\n"); | |
535 | break; | |
536 | case QCBTU_IRQ: | |
537 | dev_dbg(&info->pdev->dev, | |
538 | "Quit Battery Under Temperature(CHRG) INTR\n"); | |
539 | break; | |
540 | case CBTU_IRQ: | |
541 | dev_dbg(&info->pdev->dev, | |
542 | "Hit Battery Under Temperature(CHRG) INTR\n"); | |
543 | break; | |
544 | case QCBTO_IRQ: | |
545 | dev_dbg(&info->pdev->dev, | |
546 | "Quit Battery Over Temperature(CHRG) INTR\n"); | |
547 | break; | |
548 | case CBTO_IRQ: | |
549 | dev_dbg(&info->pdev->dev, | |
550 | "Hit Battery Over Temperature(CHRG) INTR\n"); | |
551 | break; | |
552 | default: | |
553 | dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n"); | |
554 | goto out; | |
555 | } | |
556 | ||
557 | power_supply_changed(info->psy_usb); | |
558 | out: | |
559 | return IRQ_HANDLED; | |
560 | } | |
561 | ||
562 | static void axp288_charger_extcon_evt_worker(struct work_struct *work) | |
563 | { | |
564 | struct axp288_chrg_info *info = | |
565 | container_of(work, struct axp288_chrg_info, cable.work); | |
566 | int ret, current_limit; | |
843735b7 RP |
567 | struct extcon_dev *edev = info->cable.edev; |
568 | bool old_connected = info->cable.connected; | |
71851a63 | 569 | enum power_supply_type old_chg_type = info->cable.chg_type; |
843735b7 RP |
570 | |
571 | /* Determine cable/charger type */ | |
c3148034 | 572 | if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) { |
843735b7 RP |
573 | dev_dbg(&info->pdev->dev, "USB SDP charger is connected"); |
574 | info->cable.connected = true; | |
575 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB; | |
c3148034 | 576 | } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) { |
843735b7 RP |
577 | dev_dbg(&info->pdev->dev, "USB CDP charger is connected"); |
578 | info->cable.connected = true; | |
579 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB_CDP; | |
c3148034 | 580 | } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) { |
843735b7 RP |
581 | dev_dbg(&info->pdev->dev, "USB DCP charger is connected"); |
582 | info->cable.connected = true; | |
583 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB_DCP; | |
584 | } else { | |
585 | if (old_connected) | |
586 | dev_dbg(&info->pdev->dev, "USB charger disconnected"); | |
587 | info->cable.connected = false; | |
588 | info->cable.chg_type = POWER_SUPPLY_TYPE_USB; | |
589 | } | |
590 | ||
591 | /* Cable status changed */ | |
bcd39ba7 HG |
592 | if (old_connected == info->cable.connected && |
593 | old_chg_type == info->cable.chg_type) | |
843735b7 RP |
594 | return; |
595 | ||
596 | mutex_lock(&info->lock); | |
597 | ||
71851a63 HG |
598 | if (info->cable.connected) { |
599 | axp288_charger_enable_charger(info, false); | |
843735b7 | 600 | |
843735b7 RP |
601 | switch (info->cable.chg_type) { |
602 | case POWER_SUPPLY_TYPE_USB: | |
603 | current_limit = ILIM_500MA; | |
604 | break; | |
605 | case POWER_SUPPLY_TYPE_USB_CDP: | |
606 | current_limit = ILIM_1500MA; | |
607 | break; | |
608 | case POWER_SUPPLY_TYPE_USB_DCP: | |
609 | current_limit = ILIM_2000MA; | |
610 | break; | |
611 | default: | |
612 | /* Unknown */ | |
613 | current_limit = 0; | |
614 | break; | |
615 | } | |
616 | ||
617 | /* Set vbus current limit first, then enable charger */ | |
618 | ret = axp288_charger_set_vbus_inlmt(info, current_limit); | |
71851a63 HG |
619 | if (ret == 0) |
620 | axp288_charger_enable_charger(info, true); | |
621 | else | |
843735b7 RP |
622 | dev_err(&info->pdev->dev, |
623 | "error setting current limit (%d)", ret); | |
71851a63 HG |
624 | } else { |
625 | axp288_charger_enable_charger(info, false); | |
843735b7 RP |
626 | } |
627 | ||
843735b7 RP |
628 | mutex_unlock(&info->lock); |
629 | ||
bcd39ba7 | 630 | power_supply_changed(info->psy_usb); |
843735b7 RP |
631 | } |
632 | ||
577b1f06 HG |
633 | /* |
634 | * We need 3 copies of this, because there is no way to find out for which | |
635 | * cable id we are being called from the passed in arguments; and we must | |
636 | * have a separate nb for each extcon_register_notifier call. | |
637 | */ | |
638 | static int axp288_charger_handle_cable0_evt(struct notifier_block *nb, | |
639 | unsigned long event, void *param) | |
843735b7 RP |
640 | { |
641 | struct axp288_chrg_info *info = | |
577b1f06 HG |
642 | container_of(nb, struct axp288_chrg_info, cable.nb[0]); |
643 | schedule_work(&info->cable.work); | |
644 | return NOTIFY_OK; | |
645 | } | |
843735b7 | 646 | |
577b1f06 HG |
647 | static int axp288_charger_handle_cable1_evt(struct notifier_block *nb, |
648 | unsigned long event, void *param) | |
649 | { | |
650 | struct axp288_chrg_info *info = | |
651 | container_of(nb, struct axp288_chrg_info, cable.nb[1]); | |
843735b7 | 652 | schedule_work(&info->cable.work); |
577b1f06 HG |
653 | return NOTIFY_OK; |
654 | } | |
843735b7 | 655 | |
577b1f06 HG |
656 | static int axp288_charger_handle_cable2_evt(struct notifier_block *nb, |
657 | unsigned long event, void *param) | |
658 | { | |
659 | struct axp288_chrg_info *info = | |
660 | container_of(nb, struct axp288_chrg_info, cable.nb[2]); | |
661 | schedule_work(&info->cable.work); | |
843735b7 RP |
662 | return NOTIFY_OK; |
663 | } | |
664 | ||
665 | static void axp288_charger_otg_evt_worker(struct work_struct *work) | |
666 | { | |
667 | struct axp288_chrg_info *info = | |
668 | container_of(work, struct axp288_chrg_info, otg.work); | |
5c5bcb8c HG |
669 | struct extcon_dev *edev = info->otg.cable; |
670 | int ret, usb_host = extcon_get_state(edev, EXTCON_USB_HOST); | |
671 | ||
672 | dev_dbg(&info->pdev->dev, "external connector USB-Host is %s\n", | |
673 | usb_host ? "attached" : "detached"); | |
674 | ||
675 | /* | |
676 | * Set usb_id_short flag to avoid running charger detection logic | |
677 | * in case usb host. | |
678 | */ | |
679 | info->otg.id_short = usb_host; | |
843735b7 RP |
680 | |
681 | /* Disable VBUS path before enabling the 5V boost */ | |
682 | ret = axp288_charger_vbus_path_select(info, !info->otg.id_short); | |
683 | if (ret < 0) | |
684 | dev_warn(&info->pdev->dev, "vbus path disable failed\n"); | |
685 | } | |
686 | ||
687 | static int axp288_charger_handle_otg_evt(struct notifier_block *nb, | |
688 | unsigned long event, void *param) | |
689 | { | |
690 | struct axp288_chrg_info *info = | |
691 | container_of(nb, struct axp288_chrg_info, otg.id_nb); | |
843735b7 | 692 | |
843735b7 RP |
693 | schedule_work(&info->otg.work); |
694 | ||
695 | return NOTIFY_OK; | |
696 | } | |
697 | ||
d556f21c | 698 | static int charger_init_hw_regs(struct axp288_chrg_info *info) |
843735b7 RP |
699 | { |
700 | int ret, cc, cv; | |
701 | unsigned int val; | |
702 | ||
703 | /* Program temperature thresholds */ | |
704 | ret = regmap_write(info->regmap, AXP20X_V_LTF_CHRG, CHRG_VLTFC_0C); | |
d556f21c HG |
705 | if (ret < 0) { |
706 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 707 | AXP20X_V_LTF_CHRG, ret); |
d556f21c HG |
708 | return ret; |
709 | } | |
843735b7 RP |
710 | |
711 | ret = regmap_write(info->regmap, AXP20X_V_HTF_CHRG, CHRG_VHTFC_45C); | |
d556f21c HG |
712 | if (ret < 0) { |
713 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 714 | AXP20X_V_HTF_CHRG, ret); |
d556f21c HG |
715 | return ret; |
716 | } | |
843735b7 RP |
717 | |
718 | /* Do not turn-off charger o/p after charge cycle ends */ | |
719 | ret = regmap_update_bits(info->regmap, | |
720 | AXP20X_CHRG_CTRL2, | |
8cffbe47 | 721 | CNTL2_CHG_OUT_TURNON, CNTL2_CHG_OUT_TURNON); |
d556f21c HG |
722 | if (ret < 0) { |
723 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 724 | AXP20X_CHRG_CTRL2, ret); |
d556f21c HG |
725 | return ret; |
726 | } | |
843735b7 | 727 | |
843735b7 RP |
728 | /* Setup ending condition for charging to be 10% of I(chrg) */ |
729 | ret = regmap_update_bits(info->regmap, | |
730 | AXP20X_CHRG_CTRL1, | |
731 | CHRG_CCCV_ITERM_20P, 0); | |
d556f21c HG |
732 | if (ret < 0) { |
733 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 734 | AXP20X_CHRG_CTRL1, ret); |
d556f21c HG |
735 | return ret; |
736 | } | |
843735b7 RP |
737 | |
738 | /* Disable OCV-SOC curve calibration */ | |
739 | ret = regmap_update_bits(info->regmap, | |
740 | AXP20X_CC_CTRL, | |
741 | FG_CNTL_OCV_ADJ_EN, 0); | |
d556f21c HG |
742 | if (ret < 0) { |
743 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 744 | AXP20X_CC_CTRL, ret); |
d556f21c HG |
745 | return ret; |
746 | } | |
843735b7 RP |
747 | |
748 | /* Read current charge voltage and current limit */ | |
749 | ret = regmap_read(info->regmap, AXP20X_CHRG_CTRL1, &val); | |
750 | if (ret < 0) { | |
eac53b36 HG |
751 | dev_err(&info->pdev->dev, "register(%x) read error(%d)\n", |
752 | AXP20X_CHRG_CTRL1, ret); | |
753 | return ret; | |
754 | } | |
843735b7 | 755 | |
eac53b36 HG |
756 | /* Determine charge voltage */ |
757 | cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS; | |
758 | switch (cv) { | |
759 | case CHRG_CCCV_CV_4100MV: | |
760 | info->cv = CV_4100MV; | |
761 | break; | |
762 | case CHRG_CCCV_CV_4150MV: | |
763 | info->cv = CV_4150MV; | |
764 | break; | |
765 | case CHRG_CCCV_CV_4200MV: | |
766 | info->cv = CV_4200MV; | |
767 | break; | |
768 | case CHRG_CCCV_CV_4350MV: | |
769 | info->cv = CV_4350MV; | |
770 | break; | |
771 | } | |
843735b7 | 772 | |
eac53b36 HG |
773 | /* Determine charge current limit */ |
774 | cc = (ret & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS; | |
775 | cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; | |
776 | info->cc = cc; | |
843735b7 | 777 | |
eac53b36 HG |
778 | /* |
779 | * Do not allow the user to configure higher settings then those | |
780 | * set by the firmware | |
781 | */ | |
782 | info->max_cv = info->cv; | |
783 | info->max_cc = info->cc; | |
843735b7 | 784 | |
d556f21c | 785 | return 0; |
843735b7 RP |
786 | } |
787 | ||
788 | static int axp288_charger_probe(struct platform_device *pdev) | |
789 | { | |
790 | int ret, i, pirq; | |
791 | struct axp288_chrg_info *info; | |
e3668e37 | 792 | struct device *dev = &pdev->dev; |
843735b7 RP |
793 | struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); |
794 | struct power_supply_config charger_cfg = {}; | |
843735b7 RP |
795 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
796 | if (!info) | |
797 | return -ENOMEM; | |
798 | ||
799 | info->pdev = pdev; | |
800 | info->regmap = axp20x->regmap; | |
801 | info->regmap_irqc = axp20x->regmap_irqc; | |
5c5bcb8c HG |
802 | info->cable.chg_type = -1; |
803 | info->is_charger_enabled = -1; | |
843735b7 RP |
804 | |
805 | info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME); | |
806 | if (info->cable.edev == NULL) { | |
807 | dev_dbg(&pdev->dev, "%s is not ready, probe deferred\n", | |
808 | AXP288_EXTCON_DEV_NAME); | |
809 | return -EPROBE_DEFER; | |
810 | } | |
811 | ||
6c4c9a9a HG |
812 | if (acpi_dev_present(USB_HOST_EXTCON_HID, NULL, -1)) { |
813 | info->otg.cable = extcon_get_extcon_dev(USB_HOST_EXTCON_NAME); | |
814 | if (info->otg.cable == NULL) { | |
815 | dev_dbg(dev, "EXTCON_USB_HOST is not ready, probe deferred\n"); | |
816 | return -EPROBE_DEFER; | |
817 | } | |
818 | dev_info(&pdev->dev, | |
819 | "Using " USB_HOST_EXTCON_HID " extcon for usb-id\n"); | |
7508f441 HG |
820 | } |
821 | ||
843735b7 RP |
822 | platform_set_drvdata(pdev, info); |
823 | mutex_init(&info->lock); | |
824 | ||
d96e0735 HG |
825 | ret = charger_init_hw_regs(info); |
826 | if (ret) | |
827 | return ret; | |
828 | ||
843735b7 RP |
829 | /* Register with power supply class */ |
830 | charger_cfg.drv_data = info; | |
e3668e37 HG |
831 | info->psy_usb = devm_power_supply_register(dev, &axp288_charger_desc, |
832 | &charger_cfg); | |
843735b7 | 833 | if (IS_ERR(info->psy_usb)) { |
843735b7 | 834 | ret = PTR_ERR(info->psy_usb); |
e3668e37 HG |
835 | dev_err(dev, "failed to register power supply: %d\n", ret); |
836 | return ret; | |
843735b7 RP |
837 | } |
838 | ||
42e2008a HG |
839 | /* Register for extcon notification */ |
840 | INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker); | |
577b1f06 HG |
841 | info->cable.nb[0].notifier_call = axp288_charger_handle_cable0_evt; |
842 | info->cable.nb[1].notifier_call = axp288_charger_handle_cable1_evt; | |
843 | info->cable.nb[2].notifier_call = axp288_charger_handle_cable2_evt; | |
42e2008a HG |
844 | for (i = 0; i < ARRAY_SIZE(cable_ids); i++) { |
845 | ret = devm_extcon_register_notifier(dev, info->cable.edev, | |
577b1f06 | 846 | cable_ids[i], &info->cable.nb[i]); |
42e2008a HG |
847 | if (ret) { |
848 | dev_err(dev, "failed to register extcon notifier for %u: %d\n", | |
849 | cable_ids[i], ret); | |
850 | return ret; | |
851 | } | |
852 | } | |
5c5bcb8c | 853 | schedule_work(&info->cable.work); |
42e2008a | 854 | |
843735b7 RP |
855 | /* Register for OTG notification */ |
856 | INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker); | |
857 | info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt; | |
6c4c9a9a HG |
858 | if (info->otg.cable) { |
859 | ret = devm_extcon_register_notifier(&pdev->dev, info->otg.cable, | |
c3148034 | 860 | EXTCON_USB_HOST, &info->otg.id_nb); |
6c4c9a9a HG |
861 | if (ret) { |
862 | dev_err(dev, "failed to register EXTCON_USB_HOST notifier\n"); | |
863 | return ret; | |
864 | } | |
865 | schedule_work(&info->otg.work); | |
7508f441 | 866 | } |
843735b7 RP |
867 | |
868 | /* Register charger interrupts */ | |
869 | for (i = 0; i < CHRG_INTR_END; i++) { | |
870 | pirq = platform_get_irq(info->pdev, i); | |
871 | info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq); | |
872 | if (info->irq[i] < 0) { | |
873 | dev_warn(&info->pdev->dev, | |
874 | "failed to get virtual interrupt=%d\n", pirq); | |
e3668e37 | 875 | return info->irq[i]; |
843735b7 RP |
876 | } |
877 | ret = devm_request_threaded_irq(&info->pdev->dev, info->irq[i], | |
878 | NULL, axp288_charger_irq_thread_handler, | |
879 | IRQF_ONESHOT, info->pdev->name, info); | |
880 | if (ret) { | |
881 | dev_err(&pdev->dev, "failed to request interrupt=%d\n", | |
882 | info->irq[i]); | |
e3668e37 | 883 | return ret; |
843735b7 RP |
884 | } |
885 | } | |
886 | ||
843735b7 RP |
887 | return 0; |
888 | } | |
889 | ||
7def63ca HG |
890 | static const struct platform_device_id axp288_charger_id_table[] = { |
891 | { .name = "axp288_charger" }, | |
892 | {}, | |
893 | }; | |
894 | MODULE_DEVICE_TABLE(platform, axp288_charger_id_table); | |
895 | ||
843735b7 RP |
896 | static struct platform_driver axp288_charger_driver = { |
897 | .probe = axp288_charger_probe, | |
7def63ca | 898 | .id_table = axp288_charger_id_table, |
843735b7 RP |
899 | .driver = { |
900 | .name = "axp288_charger", | |
901 | }, | |
902 | }; | |
903 | ||
904 | module_platform_driver(axp288_charger_driver); | |
905 | ||
906 | MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>"); | |
907 | MODULE_DESCRIPTION("X-power AXP288 Charger Driver"); | |
908 | MODULE_LICENSE("GPL v2"); |