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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
843735b7 RP |
2 | /* |
3 | * axp288_charger.c - X-power AXP288 PMIC Charger driver | |
4 | * | |
d8e65195 | 5 | * Copyright (C) 2016-2017 Hans de Goede <hdegoede@redhat.com> |
843735b7 RP |
6 | * Copyright (C) 2014 Intel Corporation |
7 | * Author: Ramakrishna Pallala <ramakrishna.pallala@intel.com> | |
843735b7 RP |
8 | */ |
9 | ||
6c4c9a9a | 10 | #include <linux/acpi.h> |
a95761d6 | 11 | #include <linux/bitops.h> |
843735b7 RP |
12 | #include <linux/module.h> |
13 | #include <linux/device.h> | |
14 | #include <linux/regmap.h> | |
15 | #include <linux/workqueue.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/usb/otg.h> | |
19 | #include <linux/notifier.h> | |
20 | #include <linux/power_supply.h> | |
843735b7 RP |
21 | #include <linux/property.h> |
22 | #include <linux/mfd/axp20x.h> | |
23 | #include <linux/extcon.h> | |
24 | ||
a95761d6 OS |
25 | #define PS_STAT_VBUS_TRIGGER BIT(0) |
26 | #define PS_STAT_BAT_CHRG_DIR BIT(2) | |
27 | #define PS_STAT_VBAT_ABOVE_VHOLD BIT(3) | |
28 | #define PS_STAT_VBUS_VALID BIT(4) | |
29 | #define PS_STAT_VBUS_PRESENT BIT(5) | |
843735b7 | 30 | |
a95761d6 OS |
31 | #define CHRG_STAT_BAT_SAFE_MODE BIT(3) |
32 | #define CHRG_STAT_BAT_VALID BIT(4) | |
33 | #define CHRG_STAT_BAT_PRESENT BIT(5) | |
34 | #define CHRG_STAT_CHARGING BIT(6) | |
35 | #define CHRG_STAT_PMIC_OTP BIT(7) | |
843735b7 RP |
36 | |
37 | #define VBUS_ISPOUT_CUR_LIM_MASK 0x03 | |
38 | #define VBUS_ISPOUT_CUR_LIM_BIT_POS 0 | |
39 | #define VBUS_ISPOUT_CUR_LIM_900MA 0x0 /* 900mA */ | |
40 | #define VBUS_ISPOUT_CUR_LIM_1500MA 0x1 /* 1500mA */ | |
41 | #define VBUS_ISPOUT_CUR_LIM_2000MA 0x2 /* 2000mA */ | |
42 | #define VBUS_ISPOUT_CUR_NO_LIM 0x3 /* 2500mA */ | |
43 | #define VBUS_ISPOUT_VHOLD_SET_MASK 0x31 | |
44 | #define VBUS_ISPOUT_VHOLD_SET_BIT_POS 0x3 | |
45 | #define VBUS_ISPOUT_VHOLD_SET_OFFSET 4000 /* 4000mV */ | |
46 | #define VBUS_ISPOUT_VHOLD_SET_LSB_RES 100 /* 100mV */ | |
47 | #define VBUS_ISPOUT_VHOLD_SET_4300MV 0x3 /* 4300mV */ | |
a95761d6 | 48 | #define VBUS_ISPOUT_VBUS_PATH_DIS BIT(7) |
843735b7 RP |
49 | |
50 | #define CHRG_CCCV_CC_MASK 0xf /* 4 bits */ | |
51 | #define CHRG_CCCV_CC_BIT_POS 0 | |
52 | #define CHRG_CCCV_CC_OFFSET 200 /* 200mA */ | |
53 | #define CHRG_CCCV_CC_LSB_RES 200 /* 200mA */ | |
a95761d6 | 54 | #define CHRG_CCCV_ITERM_20P BIT(4) /* 20% of CC */ |
843735b7 RP |
55 | #define CHRG_CCCV_CV_MASK 0x60 /* 2 bits */ |
56 | #define CHRG_CCCV_CV_BIT_POS 5 | |
57 | #define CHRG_CCCV_CV_4100MV 0x0 /* 4.10V */ | |
58 | #define CHRG_CCCV_CV_4150MV 0x1 /* 4.15V */ | |
59 | #define CHRG_CCCV_CV_4200MV 0x2 /* 4.20V */ | |
60 | #define CHRG_CCCV_CV_4350MV 0x3 /* 4.35V */ | |
a95761d6 | 61 | #define CHRG_CCCV_CHG_EN BIT(7) |
843735b7 RP |
62 | |
63 | #define CNTL2_CC_TIMEOUT_MASK 0x3 /* 2 bits */ | |
64 | #define CNTL2_CC_TIMEOUT_OFFSET 6 /* 6 Hrs */ | |
65 | #define CNTL2_CC_TIMEOUT_LSB_RES 2 /* 2 Hrs */ | |
66 | #define CNTL2_CC_TIMEOUT_12HRS 0x3 /* 12 Hrs */ | |
a95761d6 OS |
67 | #define CNTL2_CHGLED_TYPEB BIT(4) |
68 | #define CNTL2_CHG_OUT_TURNON BIT(5) | |
843735b7 RP |
69 | #define CNTL2_PC_TIMEOUT_MASK 0xC0 |
70 | #define CNTL2_PC_TIMEOUT_OFFSET 40 /* 40 mins */ | |
71 | #define CNTL2_PC_TIMEOUT_LSB_RES 10 /* 10 mins */ | |
72 | #define CNTL2_PC_TIMEOUT_70MINS 0x3 | |
73 | ||
a95761d6 | 74 | #define CHRG_ILIM_TEMP_LOOP_EN BIT(3) |
843735b7 RP |
75 | #define CHRG_VBUS_ILIM_MASK 0xf0 |
76 | #define CHRG_VBUS_ILIM_BIT_POS 4 | |
77 | #define CHRG_VBUS_ILIM_100MA 0x0 /* 100mA */ | |
78 | #define CHRG_VBUS_ILIM_500MA 0x1 /* 500mA */ | |
79 | #define CHRG_VBUS_ILIM_900MA 0x2 /* 900mA */ | |
80 | #define CHRG_VBUS_ILIM_1500MA 0x3 /* 1500mA */ | |
81 | #define CHRG_VBUS_ILIM_2000MA 0x4 /* 2000mA */ | |
82 | #define CHRG_VBUS_ILIM_2500MA 0x5 /* 2500mA */ | |
83 | #define CHRG_VBUS_ILIM_3000MA 0x6 /* 3000mA */ | |
5b76ad50 HG |
84 | #define CHRG_VBUS_ILIM_3500MA 0x7 /* 3500mA */ |
85 | #define CHRG_VBUS_ILIM_4000MA 0x8 /* 4000mA */ | |
843735b7 RP |
86 | |
87 | #define CHRG_VLTFC_0C 0xA5 /* 0 DegC */ | |
88 | #define CHRG_VHTFC_45C 0x1F /* 45 DegC */ | |
89 | ||
a95761d6 | 90 | #define FG_CNTL_OCV_ADJ_EN BIT(3) |
843735b7 RP |
91 | |
92 | #define CV_4100MV 4100 /* 4100mV */ | |
93 | #define CV_4150MV 4150 /* 4150mV */ | |
94 | #define CV_4200MV 4200 /* 4200mV */ | |
95 | #define CV_4350MV 4350 /* 4350mV */ | |
96 | ||
843735b7 | 97 | #define AXP288_EXTCON_DEV_NAME "axp288_extcon" |
6c4c9a9a HG |
98 | #define USB_HOST_EXTCON_HID "INT3496" |
99 | #define USB_HOST_EXTCON_NAME "INT3496:00" | |
843735b7 | 100 | |
843735b7 RP |
101 | enum { |
102 | VBUS_OV_IRQ = 0, | |
103 | CHARGE_DONE_IRQ, | |
104 | CHARGE_CHARGING_IRQ, | |
105 | BAT_SAFE_QUIT_IRQ, | |
106 | BAT_SAFE_ENTER_IRQ, | |
107 | QCBTU_IRQ, | |
108 | CBTU_IRQ, | |
109 | QCBTO_IRQ, | |
110 | CBTO_IRQ, | |
111 | CHRG_INTR_END, | |
112 | }; | |
113 | ||
114 | struct axp288_chrg_info { | |
115 | struct platform_device *pdev; | |
843735b7 RP |
116 | struct regmap *regmap; |
117 | struct regmap_irq_chip_data *regmap_irqc; | |
118 | int irq[CHRG_INTR_END]; | |
119 | struct power_supply *psy_usb; | |
843735b7 RP |
120 | |
121 | /* OTG/Host mode */ | |
122 | struct { | |
123 | struct work_struct work; | |
b396cff5 | 124 | struct extcon_dev *cable; |
843735b7 RP |
125 | struct notifier_block id_nb; |
126 | bool id_short; | |
127 | } otg; | |
128 | ||
129 | /* SDP/CDP/DCP USB charging cable notifications */ | |
130 | struct { | |
131 | struct extcon_dev *edev; | |
8c0a0a29 | 132 | struct notifier_block nb; |
843735b7 RP |
133 | struct work_struct work; |
134 | } cable; | |
135 | ||
843735b7 RP |
136 | int cc; |
137 | int cv; | |
138 | int max_cc; | |
139 | int max_cv; | |
843735b7 RP |
140 | }; |
141 | ||
142 | static inline int axp288_charger_set_cc(struct axp288_chrg_info *info, int cc) | |
143 | { | |
144 | u8 reg_val; | |
145 | int ret; | |
146 | ||
147 | if (cc < CHRG_CCCV_CC_OFFSET) | |
148 | cc = CHRG_CCCV_CC_OFFSET; | |
149 | else if (cc > info->max_cc) | |
150 | cc = info->max_cc; | |
151 | ||
152 | reg_val = (cc - CHRG_CCCV_CC_OFFSET) / CHRG_CCCV_CC_LSB_RES; | |
153 | cc = (reg_val * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; | |
154 | reg_val = reg_val << CHRG_CCCV_CC_BIT_POS; | |
155 | ||
156 | ret = regmap_update_bits(info->regmap, | |
157 | AXP20X_CHRG_CTRL1, | |
158 | CHRG_CCCV_CC_MASK, reg_val); | |
159 | if (ret >= 0) | |
160 | info->cc = cc; | |
161 | ||
162 | return ret; | |
163 | } | |
164 | ||
165 | static inline int axp288_charger_set_cv(struct axp288_chrg_info *info, int cv) | |
166 | { | |
167 | u8 reg_val; | |
168 | int ret; | |
169 | ||
170 | if (cv <= CV_4100MV) { | |
171 | reg_val = CHRG_CCCV_CV_4100MV; | |
172 | cv = CV_4100MV; | |
173 | } else if (cv <= CV_4150MV) { | |
174 | reg_val = CHRG_CCCV_CV_4150MV; | |
175 | cv = CV_4150MV; | |
176 | } else if (cv <= CV_4200MV) { | |
177 | reg_val = CHRG_CCCV_CV_4200MV; | |
178 | cv = CV_4200MV; | |
179 | } else { | |
180 | reg_val = CHRG_CCCV_CV_4350MV; | |
181 | cv = CV_4350MV; | |
182 | } | |
183 | ||
184 | reg_val = reg_val << CHRG_CCCV_CV_BIT_POS; | |
185 | ||
186 | ret = regmap_update_bits(info->regmap, | |
187 | AXP20X_CHRG_CTRL1, | |
188 | CHRG_CCCV_CV_MASK, reg_val); | |
189 | ||
190 | if (ret >= 0) | |
191 | info->cv = cv; | |
192 | ||
193 | return ret; | |
194 | } | |
195 | ||
d1ce7e58 HG |
196 | static int axp288_charger_get_vbus_inlmt(struct axp288_chrg_info *info) |
197 | { | |
198 | unsigned int val; | |
199 | int ret; | |
200 | ||
201 | ret = regmap_read(info->regmap, AXP20X_CHRG_BAK_CTRL, &val); | |
202 | if (ret < 0) | |
203 | return ret; | |
204 | ||
205 | val >>= CHRG_VBUS_ILIM_BIT_POS; | |
206 | switch (val) { | |
207 | case CHRG_VBUS_ILIM_100MA: | |
208 | return 100000; | |
209 | case CHRG_VBUS_ILIM_500MA: | |
210 | return 500000; | |
211 | case CHRG_VBUS_ILIM_900MA: | |
212 | return 900000; | |
213 | case CHRG_VBUS_ILIM_1500MA: | |
214 | return 1500000; | |
215 | case CHRG_VBUS_ILIM_2000MA: | |
216 | return 2000000; | |
217 | case CHRG_VBUS_ILIM_2500MA: | |
218 | return 2500000; | |
219 | case CHRG_VBUS_ILIM_3000MA: | |
220 | return 3000000; | |
5b76ad50 HG |
221 | case CHRG_VBUS_ILIM_3500MA: |
222 | return 3500000; | |
d1ce7e58 | 223 | default: |
5b76ad50 HG |
224 | /* All b1xxx values map to 4000 mA */ |
225 | return 4000000; | |
d1ce7e58 HG |
226 | } |
227 | } | |
228 | ||
843735b7 RP |
229 | static inline int axp288_charger_set_vbus_inlmt(struct axp288_chrg_info *info, |
230 | int inlmt) | |
231 | { | |
232 | int ret; | |
843735b7 RP |
233 | u8 reg_val; |
234 | ||
5b76ad50 HG |
235 | if (inlmt >= 4000000) |
236 | reg_val = CHRG_VBUS_ILIM_4000MA << CHRG_VBUS_ILIM_BIT_POS; | |
237 | else if (inlmt >= 3500000) | |
238 | reg_val = CHRG_VBUS_ILIM_3500MA << CHRG_VBUS_ILIM_BIT_POS; | |
239 | else if (inlmt >= 3000000) | |
9563d054 HG |
240 | reg_val = CHRG_VBUS_ILIM_3000MA << CHRG_VBUS_ILIM_BIT_POS; |
241 | else if (inlmt >= 2500000) | |
242 | reg_val = CHRG_VBUS_ILIM_2500MA << CHRG_VBUS_ILIM_BIT_POS; | |
243 | else if (inlmt >= 2000000) | |
244 | reg_val = CHRG_VBUS_ILIM_2000MA << CHRG_VBUS_ILIM_BIT_POS; | |
245 | else if (inlmt >= 1500000) | |
246 | reg_val = CHRG_VBUS_ILIM_1500MA << CHRG_VBUS_ILIM_BIT_POS; | |
247 | else if (inlmt >= 900000) | |
248 | reg_val = CHRG_VBUS_ILIM_900MA << CHRG_VBUS_ILIM_BIT_POS; | |
249 | else if (inlmt >= 500000) | |
250 | reg_val = CHRG_VBUS_ILIM_500MA << CHRG_VBUS_ILIM_BIT_POS; | |
251 | else | |
252 | reg_val = CHRG_VBUS_ILIM_100MA << CHRG_VBUS_ILIM_BIT_POS; | |
bbafa111 HG |
253 | |
254 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_BAK_CTRL, | |
255 | CHRG_VBUS_ILIM_MASK, reg_val); | |
d1ce7e58 | 256 | if (ret < 0) |
843735b7 RP |
257 | dev_err(&info->pdev->dev, "charger BAK control %d\n", ret); |
258 | ||
843735b7 RP |
259 | return ret; |
260 | } | |
261 | ||
262 | static int axp288_charger_vbus_path_select(struct axp288_chrg_info *info, | |
263 | bool enable) | |
264 | { | |
265 | int ret; | |
266 | ||
267 | if (enable) | |
268 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, | |
269 | VBUS_ISPOUT_VBUS_PATH_DIS, 0); | |
270 | else | |
271 | ret = regmap_update_bits(info->regmap, AXP20X_VBUS_IPSOUT_MGMT, | |
272 | VBUS_ISPOUT_VBUS_PATH_DIS, VBUS_ISPOUT_VBUS_PATH_DIS); | |
273 | ||
274 | if (ret < 0) | |
275 | dev_err(&info->pdev->dev, "axp288 vbus path select %d\n", ret); | |
276 | ||
843735b7 RP |
277 | return ret; |
278 | } | |
279 | ||
280 | static int axp288_charger_enable_charger(struct axp288_chrg_info *info, | |
281 | bool enable) | |
282 | { | |
283 | int ret; | |
284 | ||
285 | if (enable) | |
286 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, | |
287 | CHRG_CCCV_CHG_EN, CHRG_CCCV_CHG_EN); | |
288 | else | |
289 | ret = regmap_update_bits(info->regmap, AXP20X_CHRG_CTRL1, | |
290 | CHRG_CCCV_CHG_EN, 0); | |
291 | if (ret < 0) | |
292 | dev_err(&info->pdev->dev, "axp288 enable charger %d\n", ret); | |
843735b7 RP |
293 | |
294 | return ret; | |
295 | } | |
296 | ||
297 | static int axp288_charger_is_present(struct axp288_chrg_info *info) | |
298 | { | |
299 | int ret, present = 0; | |
300 | unsigned int val; | |
301 | ||
302 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
303 | if (ret < 0) | |
304 | return ret; | |
305 | ||
306 | if (val & PS_STAT_VBUS_PRESENT) | |
307 | present = 1; | |
308 | return present; | |
309 | } | |
310 | ||
311 | static int axp288_charger_is_online(struct axp288_chrg_info *info) | |
312 | { | |
313 | int ret, online = 0; | |
314 | unsigned int val; | |
315 | ||
316 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
317 | if (ret < 0) | |
318 | return ret; | |
319 | ||
320 | if (val & PS_STAT_VBUS_VALID) | |
321 | online = 1; | |
322 | return online; | |
323 | } | |
324 | ||
325 | static int axp288_get_charger_health(struct axp288_chrg_info *info) | |
326 | { | |
327 | int ret, pwr_stat, chrg_stat; | |
328 | int health = POWER_SUPPLY_HEALTH_UNKNOWN; | |
329 | unsigned int val; | |
330 | ||
331 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
332 | if ((ret < 0) || !(val & PS_STAT_VBUS_PRESENT)) | |
333 | goto health_read_fail; | |
334 | else | |
335 | pwr_stat = val; | |
336 | ||
337 | ret = regmap_read(info->regmap, AXP20X_PWR_OP_MODE, &val); | |
338 | if (ret < 0) | |
339 | goto health_read_fail; | |
340 | else | |
341 | chrg_stat = val; | |
342 | ||
343 | if (!(pwr_stat & PS_STAT_VBUS_VALID)) | |
344 | health = POWER_SUPPLY_HEALTH_DEAD; | |
345 | else if (chrg_stat & CHRG_STAT_PMIC_OTP) | |
346 | health = POWER_SUPPLY_HEALTH_OVERHEAT; | |
347 | else if (chrg_stat & CHRG_STAT_BAT_SAFE_MODE) | |
348 | health = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE; | |
349 | else | |
350 | health = POWER_SUPPLY_HEALTH_GOOD; | |
351 | ||
352 | health_read_fail: | |
353 | return health; | |
354 | } | |
355 | ||
356 | static int axp288_charger_usb_set_property(struct power_supply *psy, | |
357 | enum power_supply_property psp, | |
358 | const union power_supply_propval *val) | |
359 | { | |
360 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); | |
361 | int ret = 0; | |
362 | int scaled_val; | |
363 | ||
843735b7 RP |
364 | switch (psp) { |
365 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
366 | scaled_val = min(val->intval, info->max_cc); | |
367 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); | |
368 | ret = axp288_charger_set_cc(info, scaled_val); | |
369 | if (ret < 0) | |
370 | dev_warn(&info->pdev->dev, "set charge current failed\n"); | |
371 | break; | |
372 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
373 | scaled_val = min(val->intval, info->max_cv); | |
374 | scaled_val = DIV_ROUND_CLOSEST(scaled_val, 1000); | |
375 | ret = axp288_charger_set_cv(info, scaled_val); | |
376 | if (ret < 0) | |
377 | dev_warn(&info->pdev->dev, "set charge voltage failed\n"); | |
378 | break; | |
81d56dd3 HG |
379 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
380 | ret = axp288_charger_set_vbus_inlmt(info, val->intval); | |
381 | if (ret < 0) | |
382 | dev_warn(&info->pdev->dev, "set input current limit failed\n"); | |
383 | break; | |
843735b7 RP |
384 | default: |
385 | ret = -EINVAL; | |
386 | } | |
387 | ||
843735b7 RP |
388 | return ret; |
389 | } | |
390 | ||
391 | static int axp288_charger_usb_get_property(struct power_supply *psy, | |
392 | enum power_supply_property psp, | |
393 | union power_supply_propval *val) | |
394 | { | |
395 | struct axp288_chrg_info *info = power_supply_get_drvdata(psy); | |
c28185bd | 396 | int ret; |
843735b7 RP |
397 | |
398 | switch (psp) { | |
399 | case POWER_SUPPLY_PROP_PRESENT: | |
400 | /* Check for OTG case first */ | |
401 | if (info->otg.id_short) { | |
402 | val->intval = 0; | |
403 | break; | |
404 | } | |
405 | ret = axp288_charger_is_present(info); | |
406 | if (ret < 0) | |
c28185bd | 407 | return ret; |
bcd39ba7 | 408 | val->intval = ret; |
843735b7 RP |
409 | break; |
410 | case POWER_SUPPLY_PROP_ONLINE: | |
411 | /* Check for OTG case first */ | |
412 | if (info->otg.id_short) { | |
413 | val->intval = 0; | |
414 | break; | |
415 | } | |
416 | ret = axp288_charger_is_online(info); | |
417 | if (ret < 0) | |
c28185bd | 418 | return ret; |
bcd39ba7 | 419 | val->intval = ret; |
843735b7 RP |
420 | break; |
421 | case POWER_SUPPLY_PROP_HEALTH: | |
422 | val->intval = axp288_get_charger_health(info); | |
423 | break; | |
424 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
425 | val->intval = info->cc * 1000; | |
426 | break; | |
427 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: | |
428 | val->intval = info->max_cc * 1000; | |
429 | break; | |
430 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
431 | val->intval = info->cv * 1000; | |
432 | break; | |
433 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: | |
434 | val->intval = info->max_cv * 1000; | |
435 | break; | |
81d56dd3 | 436 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
d1ce7e58 HG |
437 | ret = axp288_charger_get_vbus_inlmt(info); |
438 | if (ret < 0) | |
439 | return ret; | |
440 | val->intval = ret; | |
843735b7 RP |
441 | break; |
442 | default: | |
c28185bd | 443 | return -EINVAL; |
843735b7 RP |
444 | } |
445 | ||
c28185bd | 446 | return 0; |
843735b7 RP |
447 | } |
448 | ||
449 | static int axp288_charger_property_is_writeable(struct power_supply *psy, | |
450 | enum power_supply_property psp) | |
451 | { | |
452 | int ret; | |
453 | ||
454 | switch (psp) { | |
455 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: | |
456 | case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: | |
81d56dd3 | 457 | case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: |
843735b7 RP |
458 | ret = 1; |
459 | break; | |
460 | default: | |
461 | ret = 0; | |
462 | } | |
463 | ||
464 | return ret; | |
465 | } | |
466 | ||
467 | static enum power_supply_property axp288_usb_props[] = { | |
468 | POWER_SUPPLY_PROP_PRESENT, | |
469 | POWER_SUPPLY_PROP_ONLINE, | |
470 | POWER_SUPPLY_PROP_TYPE, | |
471 | POWER_SUPPLY_PROP_HEALTH, | |
472 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, | |
473 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, | |
474 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, | |
475 | POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, | |
81d56dd3 | 476 | POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, |
843735b7 RP |
477 | }; |
478 | ||
479 | static const struct power_supply_desc axp288_charger_desc = { | |
480 | .name = "axp288_charger", | |
481 | .type = POWER_SUPPLY_TYPE_USB, | |
482 | .properties = axp288_usb_props, | |
483 | .num_properties = ARRAY_SIZE(axp288_usb_props), | |
484 | .get_property = axp288_charger_usb_get_property, | |
485 | .set_property = axp288_charger_usb_set_property, | |
486 | .property_is_writeable = axp288_charger_property_is_writeable, | |
487 | }; | |
488 | ||
489 | static irqreturn_t axp288_charger_irq_thread_handler(int irq, void *dev) | |
490 | { | |
491 | struct axp288_chrg_info *info = dev; | |
492 | int i; | |
493 | ||
494 | for (i = 0; i < CHRG_INTR_END; i++) { | |
495 | if (info->irq[i] == irq) | |
496 | break; | |
497 | } | |
498 | ||
499 | if (i >= CHRG_INTR_END) { | |
500 | dev_warn(&info->pdev->dev, "spurious interrupt!!\n"); | |
501 | return IRQ_NONE; | |
502 | } | |
503 | ||
504 | switch (i) { | |
505 | case VBUS_OV_IRQ: | |
506 | dev_dbg(&info->pdev->dev, "VBUS Over Voltage INTR\n"); | |
507 | break; | |
508 | case CHARGE_DONE_IRQ: | |
509 | dev_dbg(&info->pdev->dev, "Charging Done INTR\n"); | |
510 | break; | |
511 | case CHARGE_CHARGING_IRQ: | |
512 | dev_dbg(&info->pdev->dev, "Start Charging IRQ\n"); | |
513 | break; | |
514 | case BAT_SAFE_QUIT_IRQ: | |
515 | dev_dbg(&info->pdev->dev, | |
516 | "Quit Safe Mode(restart timer) Charging IRQ\n"); | |
517 | break; | |
518 | case BAT_SAFE_ENTER_IRQ: | |
519 | dev_dbg(&info->pdev->dev, | |
520 | "Enter Safe Mode(timer expire) Charging IRQ\n"); | |
521 | break; | |
522 | case QCBTU_IRQ: | |
523 | dev_dbg(&info->pdev->dev, | |
524 | "Quit Battery Under Temperature(CHRG) INTR\n"); | |
525 | break; | |
526 | case CBTU_IRQ: | |
527 | dev_dbg(&info->pdev->dev, | |
528 | "Hit Battery Under Temperature(CHRG) INTR\n"); | |
529 | break; | |
530 | case QCBTO_IRQ: | |
531 | dev_dbg(&info->pdev->dev, | |
532 | "Quit Battery Over Temperature(CHRG) INTR\n"); | |
533 | break; | |
534 | case CBTO_IRQ: | |
535 | dev_dbg(&info->pdev->dev, | |
536 | "Hit Battery Over Temperature(CHRG) INTR\n"); | |
537 | break; | |
538 | default: | |
539 | dev_warn(&info->pdev->dev, "Spurious Interrupt!!!\n"); | |
540 | goto out; | |
541 | } | |
542 | ||
543 | power_supply_changed(info->psy_usb); | |
544 | out: | |
545 | return IRQ_HANDLED; | |
546 | } | |
547 | ||
548 | static void axp288_charger_extcon_evt_worker(struct work_struct *work) | |
549 | { | |
550 | struct axp288_chrg_info *info = | |
551 | container_of(work, struct axp288_chrg_info, cable.work); | |
552 | int ret, current_limit; | |
843735b7 | 553 | struct extcon_dev *edev = info->cable.edev; |
d8e65195 HG |
554 | unsigned int val; |
555 | ||
556 | ret = regmap_read(info->regmap, AXP20X_PWR_INPUT_STATUS, &val); | |
557 | if (ret < 0) { | |
558 | dev_err(&info->pdev->dev, "Error reading status (%d)\n", ret); | |
559 | return; | |
560 | } | |
561 | ||
562 | /* Offline? Disable charging and bail */ | |
563 | if (!(val & PS_STAT_VBUS_VALID)) { | |
564 | dev_dbg(&info->pdev->dev, "USB charger disconnected\n"); | |
d8e65195 | 565 | axp288_charger_enable_charger(info, false); |
d8e65195 HG |
566 | power_supply_changed(info->psy_usb); |
567 | return; | |
568 | } | |
843735b7 RP |
569 | |
570 | /* Determine cable/charger type */ | |
c3148034 | 571 | if (extcon_get_state(edev, EXTCON_CHG_USB_SDP) > 0) { |
a59943f8 | 572 | dev_dbg(&info->pdev->dev, "USB SDP charger is connected\n"); |
9563d054 | 573 | current_limit = 500000; |
c3148034 | 574 | } else if (extcon_get_state(edev, EXTCON_CHG_USB_CDP) > 0) { |
a59943f8 | 575 | dev_dbg(&info->pdev->dev, "USB CDP charger is connected\n"); |
9563d054 | 576 | current_limit = 1500000; |
c3148034 | 577 | } else if (extcon_get_state(edev, EXTCON_CHG_USB_DCP) > 0) { |
a59943f8 | 578 | dev_dbg(&info->pdev->dev, "USB DCP charger is connected\n"); |
9563d054 | 579 | current_limit = 2000000; |
843735b7 | 580 | } else { |
d8e65195 | 581 | /* Charger type detection still in progress, bail. */ |
843735b7 | 582 | return; |
843735b7 RP |
583 | } |
584 | ||
d8e65195 HG |
585 | /* Set vbus current limit first, then enable charger */ |
586 | ret = axp288_charger_set_vbus_inlmt(info, current_limit); | |
587 | if (ret == 0) | |
588 | axp288_charger_enable_charger(info, true); | |
589 | else | |
590 | dev_err(&info->pdev->dev, | |
591 | "error setting current limit (%d)\n", ret); | |
843735b7 | 592 | |
bcd39ba7 | 593 | power_supply_changed(info->psy_usb); |
843735b7 RP |
594 | } |
595 | ||
8c0a0a29 HG |
596 | static int axp288_charger_handle_cable_evt(struct notifier_block *nb, |
597 | unsigned long event, void *param) | |
577b1f06 HG |
598 | { |
599 | struct axp288_chrg_info *info = | |
8c0a0a29 | 600 | container_of(nb, struct axp288_chrg_info, cable.nb); |
577b1f06 | 601 | schedule_work(&info->cable.work); |
843735b7 RP |
602 | return NOTIFY_OK; |
603 | } | |
604 | ||
605 | static void axp288_charger_otg_evt_worker(struct work_struct *work) | |
606 | { | |
607 | struct axp288_chrg_info *info = | |
608 | container_of(work, struct axp288_chrg_info, otg.work); | |
5c5bcb8c HG |
609 | struct extcon_dev *edev = info->otg.cable; |
610 | int ret, usb_host = extcon_get_state(edev, EXTCON_USB_HOST); | |
611 | ||
612 | dev_dbg(&info->pdev->dev, "external connector USB-Host is %s\n", | |
613 | usb_host ? "attached" : "detached"); | |
614 | ||
615 | /* | |
616 | * Set usb_id_short flag to avoid running charger detection logic | |
617 | * in case usb host. | |
618 | */ | |
619 | info->otg.id_short = usb_host; | |
843735b7 RP |
620 | |
621 | /* Disable VBUS path before enabling the 5V boost */ | |
622 | ret = axp288_charger_vbus_path_select(info, !info->otg.id_short); | |
623 | if (ret < 0) | |
624 | dev_warn(&info->pdev->dev, "vbus path disable failed\n"); | |
625 | } | |
626 | ||
627 | static int axp288_charger_handle_otg_evt(struct notifier_block *nb, | |
628 | unsigned long event, void *param) | |
629 | { | |
630 | struct axp288_chrg_info *info = | |
631 | container_of(nb, struct axp288_chrg_info, otg.id_nb); | |
843735b7 | 632 | |
843735b7 RP |
633 | schedule_work(&info->otg.work); |
634 | ||
635 | return NOTIFY_OK; | |
636 | } | |
637 | ||
d556f21c | 638 | static int charger_init_hw_regs(struct axp288_chrg_info *info) |
843735b7 RP |
639 | { |
640 | int ret, cc, cv; | |
641 | unsigned int val; | |
642 | ||
643 | /* Program temperature thresholds */ | |
644 | ret = regmap_write(info->regmap, AXP20X_V_LTF_CHRG, CHRG_VLTFC_0C); | |
d556f21c HG |
645 | if (ret < 0) { |
646 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 647 | AXP20X_V_LTF_CHRG, ret); |
d556f21c HG |
648 | return ret; |
649 | } | |
843735b7 RP |
650 | |
651 | ret = regmap_write(info->regmap, AXP20X_V_HTF_CHRG, CHRG_VHTFC_45C); | |
d556f21c HG |
652 | if (ret < 0) { |
653 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 654 | AXP20X_V_HTF_CHRG, ret); |
d556f21c HG |
655 | return ret; |
656 | } | |
843735b7 RP |
657 | |
658 | /* Do not turn-off charger o/p after charge cycle ends */ | |
659 | ret = regmap_update_bits(info->regmap, | |
660 | AXP20X_CHRG_CTRL2, | |
8cffbe47 | 661 | CNTL2_CHG_OUT_TURNON, CNTL2_CHG_OUT_TURNON); |
d556f21c HG |
662 | if (ret < 0) { |
663 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 664 | AXP20X_CHRG_CTRL2, ret); |
d556f21c HG |
665 | return ret; |
666 | } | |
843735b7 | 667 | |
843735b7 RP |
668 | /* Setup ending condition for charging to be 10% of I(chrg) */ |
669 | ret = regmap_update_bits(info->regmap, | |
670 | AXP20X_CHRG_CTRL1, | |
671 | CHRG_CCCV_ITERM_20P, 0); | |
d556f21c HG |
672 | if (ret < 0) { |
673 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 674 | AXP20X_CHRG_CTRL1, ret); |
d556f21c HG |
675 | return ret; |
676 | } | |
843735b7 RP |
677 | |
678 | /* Disable OCV-SOC curve calibration */ | |
679 | ret = regmap_update_bits(info->regmap, | |
680 | AXP20X_CC_CTRL, | |
681 | FG_CNTL_OCV_ADJ_EN, 0); | |
d556f21c HG |
682 | if (ret < 0) { |
683 | dev_err(&info->pdev->dev, "register(%x) write error(%d)\n", | |
843735b7 | 684 | AXP20X_CC_CTRL, ret); |
d556f21c HG |
685 | return ret; |
686 | } | |
843735b7 RP |
687 | |
688 | /* Read current charge voltage and current limit */ | |
689 | ret = regmap_read(info->regmap, AXP20X_CHRG_CTRL1, &val); | |
690 | if (ret < 0) { | |
eac53b36 HG |
691 | dev_err(&info->pdev->dev, "register(%x) read error(%d)\n", |
692 | AXP20X_CHRG_CTRL1, ret); | |
693 | return ret; | |
694 | } | |
843735b7 | 695 | |
eac53b36 HG |
696 | /* Determine charge voltage */ |
697 | cv = (val & CHRG_CCCV_CV_MASK) >> CHRG_CCCV_CV_BIT_POS; | |
698 | switch (cv) { | |
699 | case CHRG_CCCV_CV_4100MV: | |
700 | info->cv = CV_4100MV; | |
701 | break; | |
702 | case CHRG_CCCV_CV_4150MV: | |
703 | info->cv = CV_4150MV; | |
704 | break; | |
705 | case CHRG_CCCV_CV_4200MV: | |
706 | info->cv = CV_4200MV; | |
707 | break; | |
708 | case CHRG_CCCV_CV_4350MV: | |
709 | info->cv = CV_4350MV; | |
710 | break; | |
711 | } | |
843735b7 | 712 | |
eac53b36 | 713 | /* Determine charge current limit */ |
f2a42595 | 714 | cc = (val & CHRG_CCCV_CC_MASK) >> CHRG_CCCV_CC_BIT_POS; |
eac53b36 HG |
715 | cc = (cc * CHRG_CCCV_CC_LSB_RES) + CHRG_CCCV_CC_OFFSET; |
716 | info->cc = cc; | |
843735b7 | 717 | |
eac53b36 HG |
718 | /* |
719 | * Do not allow the user to configure higher settings then those | |
720 | * set by the firmware | |
721 | */ | |
722 | info->max_cv = info->cv; | |
723 | info->max_cc = info->cc; | |
843735b7 | 724 | |
d556f21c | 725 | return 0; |
843735b7 RP |
726 | } |
727 | ||
165c2357 HG |
728 | static void axp288_charger_cancel_work(void *data) |
729 | { | |
730 | struct axp288_chrg_info *info = data; | |
731 | ||
732 | cancel_work_sync(&info->otg.work); | |
733 | cancel_work_sync(&info->cable.work); | |
734 | } | |
735 | ||
843735b7 RP |
736 | static int axp288_charger_probe(struct platform_device *pdev) |
737 | { | |
738 | int ret, i, pirq; | |
739 | struct axp288_chrg_info *info; | |
e3668e37 | 740 | struct device *dev = &pdev->dev; |
843735b7 RP |
741 | struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); |
742 | struct power_supply_config charger_cfg = {}; | |
efb440ec HG |
743 | unsigned int val; |
744 | ||
745 | /* | |
746 | * On some devices the fuelgauge and charger parts of the axp288 are | |
747 | * not used, check that the fuelgauge is enabled (CC_CTRL != 0). | |
748 | */ | |
749 | ret = regmap_read(axp20x->regmap, AXP20X_CC_CTRL, &val); | |
750 | if (ret < 0) | |
751 | return ret; | |
752 | if (val == 0) | |
753 | return -ENODEV; | |
754 | ||
843735b7 RP |
755 | info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); |
756 | if (!info) | |
757 | return -ENOMEM; | |
758 | ||
759 | info->pdev = pdev; | |
760 | info->regmap = axp20x->regmap; | |
761 | info->regmap_irqc = axp20x->regmap_irqc; | |
843735b7 RP |
762 | |
763 | info->cable.edev = extcon_get_extcon_dev(AXP288_EXTCON_DEV_NAME); | |
764 | if (info->cable.edev == NULL) { | |
765 | dev_dbg(&pdev->dev, "%s is not ready, probe deferred\n", | |
766 | AXP288_EXTCON_DEV_NAME); | |
767 | return -EPROBE_DEFER; | |
768 | } | |
769 | ||
6c4c9a9a HG |
770 | if (acpi_dev_present(USB_HOST_EXTCON_HID, NULL, -1)) { |
771 | info->otg.cable = extcon_get_extcon_dev(USB_HOST_EXTCON_NAME); | |
772 | if (info->otg.cable == NULL) { | |
773 | dev_dbg(dev, "EXTCON_USB_HOST is not ready, probe deferred\n"); | |
774 | return -EPROBE_DEFER; | |
775 | } | |
776 | dev_info(&pdev->dev, | |
777 | "Using " USB_HOST_EXTCON_HID " extcon for usb-id\n"); | |
7508f441 HG |
778 | } |
779 | ||
843735b7 | 780 | platform_set_drvdata(pdev, info); |
843735b7 | 781 | |
d96e0735 HG |
782 | ret = charger_init_hw_regs(info); |
783 | if (ret) | |
784 | return ret; | |
785 | ||
843735b7 RP |
786 | /* Register with power supply class */ |
787 | charger_cfg.drv_data = info; | |
e3668e37 HG |
788 | info->psy_usb = devm_power_supply_register(dev, &axp288_charger_desc, |
789 | &charger_cfg); | |
843735b7 | 790 | if (IS_ERR(info->psy_usb)) { |
843735b7 | 791 | ret = PTR_ERR(info->psy_usb); |
e3668e37 HG |
792 | dev_err(dev, "failed to register power supply: %d\n", ret); |
793 | return ret; | |
843735b7 RP |
794 | } |
795 | ||
165c2357 HG |
796 | /* Cancel our work on cleanup, register this before the notifiers */ |
797 | ret = devm_add_action(dev, axp288_charger_cancel_work, info); | |
798 | if (ret) | |
799 | return ret; | |
800 | ||
42e2008a HG |
801 | /* Register for extcon notification */ |
802 | INIT_WORK(&info->cable.work, axp288_charger_extcon_evt_worker); | |
8c0a0a29 HG |
803 | info->cable.nb.notifier_call = axp288_charger_handle_cable_evt; |
804 | ret = devm_extcon_register_notifier_all(dev, info->cable.edev, | |
805 | &info->cable.nb); | |
806 | if (ret) { | |
807 | dev_err(dev, "failed to register cable extcon notifier\n"); | |
808 | return ret; | |
42e2008a | 809 | } |
5c5bcb8c | 810 | schedule_work(&info->cable.work); |
42e2008a | 811 | |
843735b7 RP |
812 | /* Register for OTG notification */ |
813 | INIT_WORK(&info->otg.work, axp288_charger_otg_evt_worker); | |
814 | info->otg.id_nb.notifier_call = axp288_charger_handle_otg_evt; | |
6c4c9a9a HG |
815 | if (info->otg.cable) { |
816 | ret = devm_extcon_register_notifier(&pdev->dev, info->otg.cable, | |
c3148034 | 817 | EXTCON_USB_HOST, &info->otg.id_nb); |
6c4c9a9a HG |
818 | if (ret) { |
819 | dev_err(dev, "failed to register EXTCON_USB_HOST notifier\n"); | |
820 | return ret; | |
821 | } | |
822 | schedule_work(&info->otg.work); | |
7508f441 | 823 | } |
843735b7 RP |
824 | |
825 | /* Register charger interrupts */ | |
826 | for (i = 0; i < CHRG_INTR_END; i++) { | |
827 | pirq = platform_get_irq(info->pdev, i); | |
c3422ad5 GS |
828 | if (pirq < 0) { |
829 | dev_err(&pdev->dev, "Failed to get IRQ: %d\n", pirq); | |
830 | return pirq; | |
831 | } | |
843735b7 RP |
832 | info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq); |
833 | if (info->irq[i] < 0) { | |
834 | dev_warn(&info->pdev->dev, | |
835 | "failed to get virtual interrupt=%d\n", pirq); | |
e3668e37 | 836 | return info->irq[i]; |
843735b7 RP |
837 | } |
838 | ret = devm_request_threaded_irq(&info->pdev->dev, info->irq[i], | |
839 | NULL, axp288_charger_irq_thread_handler, | |
840 | IRQF_ONESHOT, info->pdev->name, info); | |
841 | if (ret) { | |
842 | dev_err(&pdev->dev, "failed to request interrupt=%d\n", | |
843 | info->irq[i]); | |
e3668e37 | 844 | return ret; |
843735b7 RP |
845 | } |
846 | } | |
847 | ||
843735b7 RP |
848 | return 0; |
849 | } | |
850 | ||
7def63ca HG |
851 | static const struct platform_device_id axp288_charger_id_table[] = { |
852 | { .name = "axp288_charger" }, | |
853 | {}, | |
854 | }; | |
855 | MODULE_DEVICE_TABLE(platform, axp288_charger_id_table); | |
856 | ||
843735b7 RP |
857 | static struct platform_driver axp288_charger_driver = { |
858 | .probe = axp288_charger_probe, | |
7def63ca | 859 | .id_table = axp288_charger_id_table, |
843735b7 RP |
860 | .driver = { |
861 | .name = "axp288_charger", | |
862 | }, | |
863 | }; | |
864 | ||
865 | module_platform_driver(axp288_charger_driver); | |
866 | ||
867 | MODULE_AUTHOR("Ramakrishna Pallala <ramakrishna.pallala@intel.com>"); | |
868 | MODULE_DESCRIPTION("X-power AXP288 Charger Driver"); | |
869 | MODULE_LICENSE("GPL v2"); |