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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
0bc98cc6 | 2 | /* |
6c47a3e0 AV |
3 | * bq2415x charger driver |
4 | * | |
149ed3d4 | 5 | * Copyright (C) 2011-2013 Pali Rohár <pali@kernel.org> |
6c47a3e0 | 6 | * |
6c47a3e0 AV |
7 | * Datasheets: |
8 | * http://www.ti.com/product/bq24150 | |
9 | * http://www.ti.com/product/bq24150a | |
10 | * http://www.ti.com/product/bq24152 | |
11 | * http://www.ti.com/product/bq24153 | |
12 | * http://www.ti.com/product/bq24153a | |
13 | * http://www.ti.com/product/bq24155 | |
0e1392d9 AMN |
14 | * http://www.ti.com/product/bq24157s |
15 | * http://www.ti.com/product/bq24158 | |
6c47a3e0 | 16 | */ |
0bc98cc6 | 17 | |
0bc98cc6 PR |
18 | #include <linux/kernel.h> |
19 | #include <linux/module.h> | |
20 | #include <linux/param.h> | |
21 | #include <linux/err.h> | |
22 | #include <linux/workqueue.h> | |
23 | #include <linux/sysfs.h> | |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/power_supply.h> | |
26 | #include <linux/idr.h> | |
27 | #include <linux/i2c.h> | |
28 | #include <linux/slab.h> | |
b01e7c3b | 29 | #include <linux/acpi.h> |
0bc98cc6 PR |
30 | |
31 | #include <linux/power/bq2415x_charger.h> | |
32 | ||
33 | /* timeout for resetting chip timer */ | |
34 | #define BQ2415X_TIMER_TIMEOUT 10 | |
35 | ||
36 | #define BQ2415X_REG_STATUS 0x00 | |
37 | #define BQ2415X_REG_CONTROL 0x01 | |
38 | #define BQ2415X_REG_VOLTAGE 0x02 | |
39 | #define BQ2415X_REG_VENDER 0x03 | |
40 | #define BQ2415X_REG_CURRENT 0x04 | |
41 | ||
42 | /* reset state for all registers */ | |
43 | #define BQ2415X_RESET_STATUS BIT(6) | |
44 | #define BQ2415X_RESET_CONTROL (BIT(4)|BIT(5)) | |
45 | #define BQ2415X_RESET_VOLTAGE (BIT(1)|BIT(3)) | |
46 | #define BQ2415X_RESET_CURRENT (BIT(0)|BIT(3)|BIT(7)) | |
47 | ||
48 | /* status register */ | |
49 | #define BQ2415X_BIT_TMR_RST 7 | |
50 | #define BQ2415X_BIT_OTG 7 | |
51 | #define BQ2415X_BIT_EN_STAT 6 | |
52 | #define BQ2415X_MASK_STAT (BIT(4)|BIT(5)) | |
53 | #define BQ2415X_SHIFT_STAT 4 | |
54 | #define BQ2415X_BIT_BOOST 3 | |
55 | #define BQ2415X_MASK_FAULT (BIT(0)|BIT(1)|BIT(2)) | |
56 | #define BQ2415X_SHIFT_FAULT 0 | |
57 | ||
58 | /* control register */ | |
59 | #define BQ2415X_MASK_LIMIT (BIT(6)|BIT(7)) | |
60 | #define BQ2415X_SHIFT_LIMIT 6 | |
61 | #define BQ2415X_MASK_VLOWV (BIT(4)|BIT(5)) | |
62 | #define BQ2415X_SHIFT_VLOWV 4 | |
63 | #define BQ2415X_BIT_TE 3 | |
64 | #define BQ2415X_BIT_CE 2 | |
65 | #define BQ2415X_BIT_HZ_MODE 1 | |
66 | #define BQ2415X_BIT_OPA_MODE 0 | |
67 | ||
68 | /* voltage register */ | |
69 | #define BQ2415X_MASK_VO (BIT(2)|BIT(3)|BIT(4)|BIT(5)|BIT(6)|BIT(7)) | |
70 | #define BQ2415X_SHIFT_VO 2 | |
71 | #define BQ2415X_BIT_OTG_PL 1 | |
72 | #define BQ2415X_BIT_OTG_EN 0 | |
73 | ||
74 | /* vender register */ | |
75 | #define BQ2415X_MASK_VENDER (BIT(5)|BIT(6)|BIT(7)) | |
76 | #define BQ2415X_SHIFT_VENDER 5 | |
77 | #define BQ2415X_MASK_PN (BIT(3)|BIT(4)) | |
78 | #define BQ2415X_SHIFT_PN 3 | |
79 | #define BQ2415X_MASK_REVISION (BIT(0)|BIT(1)|BIT(2)) | |
80 | #define BQ2415X_SHIFT_REVISION 0 | |
81 | ||
82 | /* current register */ | |
83 | #define BQ2415X_MASK_RESET BIT(7) | |
84 | #define BQ2415X_MASK_VI_CHRG (BIT(4)|BIT(5)|BIT(6)) | |
85 | #define BQ2415X_SHIFT_VI_CHRG 4 | |
86 | /* N/A BIT(3) */ | |
87 | #define BQ2415X_MASK_VI_TERM (BIT(0)|BIT(1)|BIT(2)) | |
88 | #define BQ2415X_SHIFT_VI_TERM 0 | |
89 | ||
90 | ||
91 | enum bq2415x_command { | |
92 | BQ2415X_TIMER_RESET, | |
93 | BQ2415X_OTG_STATUS, | |
94 | BQ2415X_STAT_PIN_STATUS, | |
95 | BQ2415X_STAT_PIN_ENABLE, | |
96 | BQ2415X_STAT_PIN_DISABLE, | |
97 | BQ2415X_CHARGE_STATUS, | |
98 | BQ2415X_BOOST_STATUS, | |
99 | BQ2415X_FAULT_STATUS, | |
100 | ||
101 | BQ2415X_CHARGE_TERMINATION_STATUS, | |
102 | BQ2415X_CHARGE_TERMINATION_ENABLE, | |
103 | BQ2415X_CHARGE_TERMINATION_DISABLE, | |
104 | BQ2415X_CHARGER_STATUS, | |
105 | BQ2415X_CHARGER_ENABLE, | |
106 | BQ2415X_CHARGER_DISABLE, | |
107 | BQ2415X_HIGH_IMPEDANCE_STATUS, | |
108 | BQ2415X_HIGH_IMPEDANCE_ENABLE, | |
109 | BQ2415X_HIGH_IMPEDANCE_DISABLE, | |
110 | BQ2415X_BOOST_MODE_STATUS, | |
111 | BQ2415X_BOOST_MODE_ENABLE, | |
112 | BQ2415X_BOOST_MODE_DISABLE, | |
113 | ||
114 | BQ2415X_OTG_LEVEL, | |
115 | BQ2415X_OTG_ACTIVATE_HIGH, | |
116 | BQ2415X_OTG_ACTIVATE_LOW, | |
117 | BQ2415X_OTG_PIN_STATUS, | |
118 | BQ2415X_OTG_PIN_ENABLE, | |
119 | BQ2415X_OTG_PIN_DISABLE, | |
120 | ||
121 | BQ2415X_VENDER_CODE, | |
122 | BQ2415X_PART_NUMBER, | |
123 | BQ2415X_REVISION, | |
124 | }; | |
125 | ||
126 | enum bq2415x_chip { | |
127 | BQUNKNOWN, | |
128 | BQ24150, | |
129 | BQ24150A, | |
130 | BQ24151, | |
131 | BQ24151A, | |
132 | BQ24152, | |
133 | BQ24153, | |
134 | BQ24153A, | |
135 | BQ24155, | |
136 | BQ24156, | |
137 | BQ24156A, | |
0e1392d9 | 138 | BQ24157S, |
0bc98cc6 PR |
139 | BQ24158, |
140 | }; | |
141 | ||
142 | static char *bq2415x_chip_name[] = { | |
143 | "unknown", | |
144 | "bq24150", | |
145 | "bq24150a", | |
146 | "bq24151", | |
147 | "bq24151a", | |
148 | "bq24152", | |
149 | "bq24153", | |
150 | "bq24153a", | |
151 | "bq24155", | |
152 | "bq24156", | |
153 | "bq24156a", | |
0e1392d9 | 154 | "bq24157s", |
0bc98cc6 PR |
155 | "bq24158", |
156 | }; | |
157 | ||
158 | struct bq2415x_device { | |
159 | struct device *dev; | |
160 | struct bq2415x_platform_data init_data; | |
297d716f KK |
161 | struct power_supply *charger; |
162 | struct power_supply_desc charger_desc; | |
0bc98cc6 | 163 | struct delayed_work work; |
b68c3161 | 164 | struct device_node *notify_node; |
32260308 | 165 | struct notifier_block nb; |
0bc98cc6 | 166 | enum bq2415x_mode reported_mode;/* mode reported by hook function */ |
881f985a | 167 | enum bq2415x_mode mode; /* currently configured mode */ |
0bc98cc6 PR |
168 | enum bq2415x_chip chip; |
169 | const char *timer_error; | |
170 | char *model; | |
171 | char *name; | |
172 | int autotimer; /* 1 - if driver automatically reset timer, 0 - not */ | |
173 | int automode; /* 1 - enabled, 0 - disabled; -1 - not supported */ | |
174 | int id; | |
175 | }; | |
176 | ||
177 | /* each registered chip must have unique id */ | |
178 | static DEFINE_IDR(bq2415x_id); | |
179 | ||
180 | static DEFINE_MUTEX(bq2415x_id_mutex); | |
181 | static DEFINE_MUTEX(bq2415x_timer_mutex); | |
182 | static DEFINE_MUTEX(bq2415x_i2c_mutex); | |
183 | ||
184 | /**** i2c read functions ****/ | |
185 | ||
186 | /* read value from register */ | |
187 | static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg) | |
188 | { | |
189 | struct i2c_client *client = to_i2c_client(bq->dev); | |
190 | struct i2c_msg msg[2]; | |
191 | u8 val; | |
192 | int ret; | |
193 | ||
194 | if (!client->adapter) | |
195 | return -ENODEV; | |
196 | ||
197 | msg[0].addr = client->addr; | |
198 | msg[0].flags = 0; | |
199 | msg[0].buf = ® | |
200 | msg[0].len = sizeof(reg); | |
201 | msg[1].addr = client->addr; | |
202 | msg[1].flags = I2C_M_RD; | |
203 | msg[1].buf = &val; | |
204 | msg[1].len = sizeof(val); | |
205 | ||
206 | mutex_lock(&bq2415x_i2c_mutex); | |
207 | ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); | |
208 | mutex_unlock(&bq2415x_i2c_mutex); | |
209 | ||
210 | if (ret < 0) | |
211 | return ret; | |
212 | ||
213 | return val; | |
214 | } | |
215 | ||
216 | /* read value from register, apply mask and right shift it */ | |
217 | static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg, | |
6c47a3e0 | 218 | u8 mask, u8 shift) |
0bc98cc6 PR |
219 | { |
220 | int ret; | |
221 | ||
222 | if (shift > 8) | |
223 | return -EINVAL; | |
224 | ||
225 | ret = bq2415x_i2c_read(bq, reg); | |
226 | if (ret < 0) | |
227 | return ret; | |
6c47a3e0 | 228 | return (ret & mask) >> shift; |
0bc98cc6 PR |
229 | } |
230 | ||
231 | /* read value from register and return one specified bit */ | |
232 | static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit) | |
233 | { | |
234 | if (bit > 8) | |
235 | return -EINVAL; | |
6c47a3e0 | 236 | return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit); |
0bc98cc6 PR |
237 | } |
238 | ||
239 | /**** i2c write functions ****/ | |
240 | ||
241 | /* write value to register */ | |
242 | static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val) | |
243 | { | |
244 | struct i2c_client *client = to_i2c_client(bq->dev); | |
245 | struct i2c_msg msg[1]; | |
246 | u8 data[2]; | |
247 | int ret; | |
248 | ||
249 | data[0] = reg; | |
250 | data[1] = val; | |
251 | ||
252 | msg[0].addr = client->addr; | |
253 | msg[0].flags = 0; | |
254 | msg[0].buf = data; | |
255 | msg[0].len = ARRAY_SIZE(data); | |
256 | ||
257 | mutex_lock(&bq2415x_i2c_mutex); | |
258 | ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); | |
259 | mutex_unlock(&bq2415x_i2c_mutex); | |
260 | ||
261 | /* i2c_transfer returns number of messages transferred */ | |
262 | if (ret < 0) | |
263 | return ret; | |
264 | else if (ret != 1) | |
265 | return -EIO; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | /* read value from register, change it with mask left shifted and write back */ | |
271 | static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val, | |
6c47a3e0 | 272 | u8 mask, u8 shift) |
0bc98cc6 PR |
273 | { |
274 | int ret; | |
275 | ||
276 | if (shift > 8) | |
277 | return -EINVAL; | |
278 | ||
279 | ret = bq2415x_i2c_read(bq, reg); | |
280 | if (ret < 0) | |
281 | return ret; | |
282 | ||
283 | ret &= ~mask; | |
284 | ret |= val << shift; | |
285 | ||
286 | return bq2415x_i2c_write(bq, reg, ret); | |
287 | } | |
288 | ||
289 | /* change only one bit in register */ | |
290 | static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg, | |
6c47a3e0 | 291 | bool val, u8 bit) |
0bc98cc6 PR |
292 | { |
293 | if (bit > 8) | |
294 | return -EINVAL; | |
6c47a3e0 | 295 | return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit); |
0bc98cc6 PR |
296 | } |
297 | ||
298 | /**** global functions ****/ | |
299 | ||
300 | /* exec command function */ | |
301 | static int bq2415x_exec_command(struct bq2415x_device *bq, | |
302 | enum bq2415x_command command) | |
303 | { | |
304 | int ret; | |
6c47a3e0 | 305 | |
0bc98cc6 PR |
306 | switch (command) { |
307 | case BQ2415X_TIMER_RESET: | |
308 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, | |
309 | 1, BQ2415X_BIT_TMR_RST); | |
310 | case BQ2415X_OTG_STATUS: | |
311 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, | |
312 | BQ2415X_BIT_OTG); | |
313 | case BQ2415X_STAT_PIN_STATUS: | |
314 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, | |
315 | BQ2415X_BIT_EN_STAT); | |
316 | case BQ2415X_STAT_PIN_ENABLE: | |
317 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 1, | |
318 | BQ2415X_BIT_EN_STAT); | |
319 | case BQ2415X_STAT_PIN_DISABLE: | |
320 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS, 0, | |
321 | BQ2415X_BIT_EN_STAT); | |
322 | case BQ2415X_CHARGE_STATUS: | |
323 | return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, | |
324 | BQ2415X_MASK_STAT, BQ2415X_SHIFT_STAT); | |
325 | case BQ2415X_BOOST_STATUS: | |
326 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_STATUS, | |
327 | BQ2415X_BIT_BOOST); | |
328 | case BQ2415X_FAULT_STATUS: | |
329 | return bq2415x_i2c_read_mask(bq, BQ2415X_REG_STATUS, | |
330 | BQ2415X_MASK_FAULT, BQ2415X_SHIFT_FAULT); | |
331 | ||
332 | case BQ2415X_CHARGE_TERMINATION_STATUS: | |
333 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, | |
334 | BQ2415X_BIT_TE); | |
335 | case BQ2415X_CHARGE_TERMINATION_ENABLE: | |
336 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
337 | 1, BQ2415X_BIT_TE); | |
338 | case BQ2415X_CHARGE_TERMINATION_DISABLE: | |
339 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
340 | 0, BQ2415X_BIT_TE); | |
341 | case BQ2415X_CHARGER_STATUS: | |
342 | ret = bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, | |
343 | BQ2415X_BIT_CE); | |
344 | if (ret < 0) | |
345 | return ret; | |
42d0631b | 346 | return ret > 0 ? 0 : 1; |
0bc98cc6 PR |
347 | case BQ2415X_CHARGER_ENABLE: |
348 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
349 | 0, BQ2415X_BIT_CE); | |
350 | case BQ2415X_CHARGER_DISABLE: | |
351 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
352 | 1, BQ2415X_BIT_CE); | |
353 | case BQ2415X_HIGH_IMPEDANCE_STATUS: | |
354 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, | |
355 | BQ2415X_BIT_HZ_MODE); | |
356 | case BQ2415X_HIGH_IMPEDANCE_ENABLE: | |
357 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
358 | 1, BQ2415X_BIT_HZ_MODE); | |
359 | case BQ2415X_HIGH_IMPEDANCE_DISABLE: | |
360 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
361 | 0, BQ2415X_BIT_HZ_MODE); | |
362 | case BQ2415X_BOOST_MODE_STATUS: | |
363 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_CONTROL, | |
364 | BQ2415X_BIT_OPA_MODE); | |
365 | case BQ2415X_BOOST_MODE_ENABLE: | |
366 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
367 | 1, BQ2415X_BIT_OPA_MODE); | |
368 | case BQ2415X_BOOST_MODE_DISABLE: | |
369 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_CONTROL, | |
370 | 0, BQ2415X_BIT_OPA_MODE); | |
371 | ||
372 | case BQ2415X_OTG_LEVEL: | |
373 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, | |
374 | BQ2415X_BIT_OTG_PL); | |
375 | case BQ2415X_OTG_ACTIVATE_HIGH: | |
376 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, | |
377 | 1, BQ2415X_BIT_OTG_PL); | |
378 | case BQ2415X_OTG_ACTIVATE_LOW: | |
379 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, | |
380 | 0, BQ2415X_BIT_OTG_PL); | |
381 | case BQ2415X_OTG_PIN_STATUS: | |
382 | return bq2415x_i2c_read_bit(bq, BQ2415X_REG_VOLTAGE, | |
383 | BQ2415X_BIT_OTG_EN); | |
384 | case BQ2415X_OTG_PIN_ENABLE: | |
385 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, | |
386 | 1, BQ2415X_BIT_OTG_EN); | |
387 | case BQ2415X_OTG_PIN_DISABLE: | |
388 | return bq2415x_i2c_write_bit(bq, BQ2415X_REG_VOLTAGE, | |
389 | 0, BQ2415X_BIT_OTG_EN); | |
390 | ||
391 | case BQ2415X_VENDER_CODE: | |
392 | return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, | |
393 | BQ2415X_MASK_VENDER, BQ2415X_SHIFT_VENDER); | |
394 | case BQ2415X_PART_NUMBER: | |
395 | return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, | |
396 | BQ2415X_MASK_PN, BQ2415X_SHIFT_PN); | |
397 | case BQ2415X_REVISION: | |
398 | return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER, | |
399 | BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION); | |
0bc98cc6 | 400 | } |
6c47a3e0 | 401 | return -EINVAL; |
0bc98cc6 PR |
402 | } |
403 | ||
404 | /* detect chip type */ | |
405 | static enum bq2415x_chip bq2415x_detect_chip(struct bq2415x_device *bq) | |
406 | { | |
407 | struct i2c_client *client = to_i2c_client(bq->dev); | |
408 | int ret = bq2415x_exec_command(bq, BQ2415X_PART_NUMBER); | |
409 | ||
410 | if (ret < 0) | |
411 | return ret; | |
412 | ||
413 | switch (client->addr) { | |
414 | case 0x6b: | |
415 | switch (ret) { | |
416 | case 0: | |
417 | if (bq->chip == BQ24151A) | |
418 | return bq->chip; | |
42d0631b | 419 | return BQ24151; |
0bc98cc6 PR |
420 | case 1: |
421 | if (bq->chip == BQ24150A || | |
422 | bq->chip == BQ24152 || | |
423 | bq->chip == BQ24155) | |
424 | return bq->chip; | |
42d0631b | 425 | return BQ24150; |
0bc98cc6 PR |
426 | case 2: |
427 | if (bq->chip == BQ24153A) | |
428 | return bq->chip; | |
42d0631b | 429 | return BQ24153; |
0bc98cc6 PR |
430 | default: |
431 | return BQUNKNOWN; | |
432 | } | |
433 | break; | |
434 | ||
435 | case 0x6a: | |
436 | switch (ret) { | |
437 | case 0: | |
438 | if (bq->chip == BQ24156A) | |
439 | return bq->chip; | |
42d0631b | 440 | return BQ24156; |
0bc98cc6 | 441 | case 2: |
0e1392d9 AMN |
442 | if (bq->chip == BQ24157S) |
443 | return bq->chip; | |
0bc98cc6 PR |
444 | return BQ24158; |
445 | default: | |
446 | return BQUNKNOWN; | |
447 | } | |
448 | break; | |
449 | } | |
450 | ||
451 | return BQUNKNOWN; | |
452 | } | |
453 | ||
454 | /* detect chip revision */ | |
455 | static int bq2415x_detect_revision(struct bq2415x_device *bq) | |
456 | { | |
457 | int ret = bq2415x_exec_command(bq, BQ2415X_REVISION); | |
458 | int chip = bq2415x_detect_chip(bq); | |
6c47a3e0 | 459 | |
0bc98cc6 PR |
460 | if (ret < 0 || chip < 0) |
461 | return -1; | |
462 | ||
463 | switch (chip) { | |
464 | case BQ24150: | |
465 | case BQ24150A: | |
466 | case BQ24151: | |
467 | case BQ24151A: | |
468 | case BQ24152: | |
469 | if (ret >= 0 && ret <= 3) | |
470 | return ret; | |
42d0631b | 471 | return -1; |
0bc98cc6 PR |
472 | case BQ24153: |
473 | case BQ24153A: | |
474 | case BQ24156: | |
475 | case BQ24156A: | |
0e1392d9 | 476 | case BQ24157S: |
0bc98cc6 PR |
477 | case BQ24158: |
478 | if (ret == 3) | |
479 | return 0; | |
480 | else if (ret == 1) | |
481 | return 1; | |
42d0631b | 482 | return -1; |
0bc98cc6 PR |
483 | case BQ24155: |
484 | if (ret == 3) | |
485 | return 3; | |
42d0631b | 486 | return -1; |
0bc98cc6 PR |
487 | case BQUNKNOWN: |
488 | return -1; | |
489 | } | |
490 | ||
491 | return -1; | |
492 | } | |
493 | ||
494 | /* return chip vender code */ | |
495 | static int bq2415x_get_vender_code(struct bq2415x_device *bq) | |
496 | { | |
6c47a3e0 AV |
497 | int ret; |
498 | ||
499 | ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE); | |
0bc98cc6 PR |
500 | if (ret < 0) |
501 | return 0; | |
6c47a3e0 AV |
502 | |
503 | /* convert to binary */ | |
504 | return (ret & 0x1) + | |
505 | ((ret >> 1) & 0x1) * 10 + | |
506 | ((ret >> 2) & 0x1) * 100; | |
0bc98cc6 PR |
507 | } |
508 | ||
509 | /* reset all chip registers to default state */ | |
510 | static void bq2415x_reset_chip(struct bq2415x_device *bq) | |
511 | { | |
512 | bq2415x_i2c_write(bq, BQ2415X_REG_CURRENT, BQ2415X_RESET_CURRENT); | |
513 | bq2415x_i2c_write(bq, BQ2415X_REG_VOLTAGE, BQ2415X_RESET_VOLTAGE); | |
514 | bq2415x_i2c_write(bq, BQ2415X_REG_CONTROL, BQ2415X_RESET_CONTROL); | |
515 | bq2415x_i2c_write(bq, BQ2415X_REG_STATUS, BQ2415X_RESET_STATUS); | |
516 | bq->timer_error = NULL; | |
517 | } | |
518 | ||
519 | /**** properties functions ****/ | |
520 | ||
521 | /* set current limit in mA */ | |
522 | static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA) | |
523 | { | |
524 | int val; | |
6c47a3e0 | 525 | |
0bc98cc6 PR |
526 | if (mA <= 100) |
527 | val = 0; | |
528 | else if (mA <= 500) | |
529 | val = 1; | |
530 | else if (mA <= 800) | |
531 | val = 2; | |
532 | else | |
533 | val = 3; | |
6c47a3e0 | 534 | |
0bc98cc6 PR |
535 | return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, |
536 | BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT); | |
537 | } | |
538 | ||
539 | /* get current limit in mA */ | |
540 | static int bq2415x_get_current_limit(struct bq2415x_device *bq) | |
541 | { | |
6c47a3e0 AV |
542 | int ret; |
543 | ||
544 | ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, | |
0bc98cc6 PR |
545 | BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT); |
546 | if (ret < 0) | |
547 | return ret; | |
548 | else if (ret == 0) | |
549 | return 100; | |
550 | else if (ret == 1) | |
551 | return 500; | |
552 | else if (ret == 2) | |
553 | return 800; | |
554 | else if (ret == 3) | |
555 | return 1800; | |
6c47a3e0 | 556 | return -EINVAL; |
0bc98cc6 PR |
557 | } |
558 | ||
559 | /* set weak battery voltage in mV */ | |
560 | static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV) | |
561 | { | |
0bc98cc6 | 562 | int val; |
6c47a3e0 AV |
563 | |
564 | /* round to 100mV */ | |
0bc98cc6 PR |
565 | if (mV <= 3400 + 50) |
566 | val = 0; | |
567 | else if (mV <= 3500 + 50) | |
568 | val = 1; | |
569 | else if (mV <= 3600 + 50) | |
570 | val = 2; | |
571 | else | |
572 | val = 3; | |
6c47a3e0 | 573 | |
0bc98cc6 PR |
574 | return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val, |
575 | BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV); | |
576 | } | |
577 | ||
578 | /* get weak battery voltage in mV */ | |
579 | static int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq) | |
580 | { | |
6c47a3e0 AV |
581 | int ret; |
582 | ||
583 | ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL, | |
0bc98cc6 PR |
584 | BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV); |
585 | if (ret < 0) | |
586 | return ret; | |
6c47a3e0 | 587 | return 100 * (34 + ret); |
0bc98cc6 PR |
588 | } |
589 | ||
590 | /* set battery regulation voltage in mV */ | |
591 | static int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq, | |
6c47a3e0 | 592 | int mV) |
0bc98cc6 PR |
593 | { |
594 | int val = (mV/10 - 350) / 2; | |
595 | ||
3ed5cd79 AB |
596 | /* |
597 | * According to datasheet, maximum battery regulation voltage is | |
598 | * 4440mV which is b101111 = 47. | |
599 | */ | |
0bc98cc6 PR |
600 | if (val < 0) |
601 | val = 0; | |
3ed5cd79 | 602 | else if (val > 47) |
0bc98cc6 PR |
603 | return -EINVAL; |
604 | ||
605 | return bq2415x_i2c_write_mask(bq, BQ2415X_REG_VOLTAGE, val, | |
606 | BQ2415X_MASK_VO, BQ2415X_SHIFT_VO); | |
607 | } | |
608 | ||
609 | /* get battery regulation voltage in mV */ | |
610 | static int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq) | |
611 | { | |
612 | int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE, | |
613 | BQ2415X_MASK_VO, BQ2415X_SHIFT_VO); | |
6c47a3e0 | 614 | |
0bc98cc6 PR |
615 | if (ret < 0) |
616 | return ret; | |
6c47a3e0 | 617 | return 10 * (350 + 2*ret); |
0bc98cc6 PR |
618 | } |
619 | ||
620 | /* set charge current in mA (platform data must provide resistor sense) */ | |
621 | static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA) | |
622 | { | |
623 | int val; | |
6c47a3e0 | 624 | |
0bc98cc6 | 625 | if (bq->init_data.resistor_sense <= 0) |
f6d8b774 | 626 | return -EINVAL; |
0bc98cc6 PR |
627 | |
628 | val = (mA * bq->init_data.resistor_sense - 37400) / 6800; | |
0bc98cc6 PR |
629 | if (val < 0) |
630 | val = 0; | |
631 | else if (val > 7) | |
632 | val = 7; | |
633 | ||
634 | return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val, | |
635 | BQ2415X_MASK_VI_CHRG | BQ2415X_MASK_RESET, | |
636 | BQ2415X_SHIFT_VI_CHRG); | |
637 | } | |
638 | ||
639 | /* get charge current in mA (platform data must provide resistor sense) */ | |
640 | static int bq2415x_get_charge_current(struct bq2415x_device *bq) | |
641 | { | |
642 | int ret; | |
6c47a3e0 | 643 | |
0bc98cc6 | 644 | if (bq->init_data.resistor_sense <= 0) |
f6d8b774 | 645 | return -EINVAL; |
0bc98cc6 PR |
646 | |
647 | ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT, | |
648 | BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG); | |
649 | if (ret < 0) | |
650 | return ret; | |
6c47a3e0 | 651 | return (37400 + 6800*ret) / bq->init_data.resistor_sense; |
0bc98cc6 PR |
652 | } |
653 | ||
654 | /* set termination current in mA (platform data must provide resistor sense) */ | |
655 | static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA) | |
656 | { | |
657 | int val; | |
6c47a3e0 | 658 | |
0bc98cc6 | 659 | if (bq->init_data.resistor_sense <= 0) |
f6d8b774 | 660 | return -EINVAL; |
0bc98cc6 PR |
661 | |
662 | val = (mA * bq->init_data.resistor_sense - 3400) / 3400; | |
0bc98cc6 PR |
663 | if (val < 0) |
664 | val = 0; | |
665 | else if (val > 7) | |
666 | val = 7; | |
667 | ||
668 | return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CURRENT, val, | |
669 | BQ2415X_MASK_VI_TERM | BQ2415X_MASK_RESET, | |
670 | BQ2415X_SHIFT_VI_TERM); | |
671 | } | |
672 | ||
673 | /* get termination current in mA (platform data must provide resistor sense) */ | |
674 | static int bq2415x_get_termination_current(struct bq2415x_device *bq) | |
675 | { | |
676 | int ret; | |
6c47a3e0 | 677 | |
0bc98cc6 | 678 | if (bq->init_data.resistor_sense <= 0) |
f6d8b774 | 679 | return -EINVAL; |
0bc98cc6 PR |
680 | |
681 | ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CURRENT, | |
682 | BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM); | |
683 | if (ret < 0) | |
684 | return ret; | |
6c47a3e0 | 685 | return (3400 + 3400*ret) / bq->init_data.resistor_sense; |
0bc98cc6 PR |
686 | } |
687 | ||
688 | /* set default value of property */ | |
689 | #define bq2415x_set_default_value(bq, prop) \ | |
690 | do { \ | |
691 | int ret = 0; \ | |
692 | if (bq->init_data.prop != -1) \ | |
693 | ret = bq2415x_set_##prop(bq, bq->init_data.prop); \ | |
694 | if (ret < 0) \ | |
695 | return ret; \ | |
696 | } while (0) | |
697 | ||
698 | /* set default values of all properties */ | |
699 | static int bq2415x_set_defaults(struct bq2415x_device *bq) | |
700 | { | |
701 | bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE); | |
702 | bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE); | |
703 | bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_DISABLE); | |
6c47a3e0 | 704 | |
0bc98cc6 PR |
705 | bq2415x_set_default_value(bq, current_limit); |
706 | bq2415x_set_default_value(bq, weak_battery_voltage); | |
707 | bq2415x_set_default_value(bq, battery_regulation_voltage); | |
6c47a3e0 | 708 | |
0bc98cc6 PR |
709 | if (bq->init_data.resistor_sense > 0) { |
710 | bq2415x_set_default_value(bq, charge_current); | |
711 | bq2415x_set_default_value(bq, termination_current); | |
712 | bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_ENABLE); | |
713 | } | |
6c47a3e0 | 714 | |
0bc98cc6 PR |
715 | bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE); |
716 | return 0; | |
717 | } | |
718 | ||
719 | /**** charger mode functions ****/ | |
720 | ||
721 | /* set charger mode */ | |
722 | static int bq2415x_set_mode(struct bq2415x_device *bq, enum bq2415x_mode mode) | |
723 | { | |
724 | int ret = 0; | |
725 | int charger = 0; | |
726 | int boost = 0; | |
727 | ||
0bc98cc6 PR |
728 | if (mode == BQ2415X_MODE_BOOST) |
729 | boost = 1; | |
ac6324e7 PR |
730 | else if (mode != BQ2415X_MODE_OFF) |
731 | charger = 1; | |
0bc98cc6 PR |
732 | |
733 | if (!charger) | |
734 | ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE); | |
735 | ||
736 | if (!boost) | |
737 | ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE); | |
738 | ||
739 | if (ret < 0) | |
740 | return ret; | |
741 | ||
742 | switch (mode) { | |
ac6324e7 PR |
743 | case BQ2415X_MODE_OFF: |
744 | dev_dbg(bq->dev, "changing mode to: Offline\n"); | |
745 | ret = bq2415x_set_current_limit(bq, 100); | |
746 | break; | |
0bc98cc6 PR |
747 | case BQ2415X_MODE_NONE: |
748 | dev_dbg(bq->dev, "changing mode to: N/A\n"); | |
749 | ret = bq2415x_set_current_limit(bq, 100); | |
750 | break; | |
751 | case BQ2415X_MODE_HOST_CHARGER: | |
752 | dev_dbg(bq->dev, "changing mode to: Host/HUB charger\n"); | |
753 | ret = bq2415x_set_current_limit(bq, 500); | |
754 | break; | |
755 | case BQ2415X_MODE_DEDICATED_CHARGER: | |
756 | dev_dbg(bq->dev, "changing mode to: Dedicated charger\n"); | |
757 | ret = bq2415x_set_current_limit(bq, 1800); | |
758 | break; | |
759 | case BQ2415X_MODE_BOOST: /* Boost mode */ | |
760 | dev_dbg(bq->dev, "changing mode to: Boost\n"); | |
761 | ret = bq2415x_set_current_limit(bq, 100); | |
762 | break; | |
763 | } | |
764 | ||
765 | if (ret < 0) | |
766 | return ret; | |
767 | ||
768 | if (charger) | |
769 | ret = bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE); | |
770 | else if (boost) | |
771 | ret = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_ENABLE); | |
772 | ||
773 | if (ret < 0) | |
774 | return ret; | |
775 | ||
776 | bq2415x_set_default_value(bq, weak_battery_voltage); | |
777 | bq2415x_set_default_value(bq, battery_regulation_voltage); | |
778 | ||
779 | bq->mode = mode; | |
297d716f | 780 | sysfs_notify(&bq->charger->dev.kobj, NULL, "mode"); |
0bc98cc6 PR |
781 | |
782 | return 0; | |
783 | ||
784 | } | |
785 | ||
b68c3161 PR |
786 | static bool bq2415x_update_reported_mode(struct bq2415x_device *bq, int mA) |
787 | { | |
788 | enum bq2415x_mode mode; | |
789 | ||
790 | if (mA == 0) | |
791 | mode = BQ2415X_MODE_OFF; | |
792 | else if (mA < 500) | |
793 | mode = BQ2415X_MODE_NONE; | |
794 | else if (mA < 1800) | |
795 | mode = BQ2415X_MODE_HOST_CHARGER; | |
796 | else | |
797 | mode = BQ2415X_MODE_DEDICATED_CHARGER; | |
798 | ||
799 | if (bq->reported_mode == mode) | |
800 | return false; | |
801 | ||
802 | bq->reported_mode = mode; | |
803 | return true; | |
804 | } | |
805 | ||
32260308 PR |
806 | static int bq2415x_notifier_call(struct notifier_block *nb, |
807 | unsigned long val, void *v) | |
0bc98cc6 | 808 | { |
32260308 PR |
809 | struct bq2415x_device *bq = |
810 | container_of(nb, struct bq2415x_device, nb); | |
811 | struct power_supply *psy = v; | |
32260308 PR |
812 | union power_supply_propval prop; |
813 | int ret; | |
0bc98cc6 | 814 | |
32260308 PR |
815 | if (val != PSY_EVENT_PROP_CHANGED) |
816 | return NOTIFY_OK; | |
817 | ||
b68c3161 PR |
818 | /* Ignore event if it was not send by notify_node/notify_device */ |
819 | if (bq->notify_node) { | |
820 | if (!psy->dev.parent || | |
821 | psy->dev.parent->of_node != bq->notify_node) | |
822 | return NOTIFY_OK; | |
823 | } else if (bq->init_data.notify_device) { | |
824 | if (strcmp(psy->desc->name, bq->init_data.notify_device) != 0) | |
825 | return NOTIFY_OK; | |
826 | } | |
32260308 PR |
827 | |
828 | dev_dbg(bq->dev, "notifier call was called\n"); | |
829 | ||
d7bdffb9 KK |
830 | ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_CURRENT_MAX, |
831 | &prop); | |
32260308 PR |
832 | if (ret != 0) |
833 | return NOTIFY_OK; | |
834 | ||
b68c3161 | 835 | if (!bq2415x_update_reported_mode(bq, prop.intval)) |
32260308 | 836 | return NOTIFY_OK; |
0bc98cc6 | 837 | |
0bc98cc6 PR |
838 | /* if automode is not enabled do not tell about reported_mode */ |
839 | if (bq->automode < 1) | |
32260308 | 840 | return NOTIFY_OK; |
0bc98cc6 | 841 | |
3c018504 | 842 | schedule_delayed_work(&bq->work, 0); |
0bc98cc6 | 843 | |
32260308 | 844 | return NOTIFY_OK; |
0bc98cc6 PR |
845 | } |
846 | ||
847 | /**** timer functions ****/ | |
848 | ||
849 | /* enable/disable auto resetting chip timer */ | |
850 | static void bq2415x_set_autotimer(struct bq2415x_device *bq, int state) | |
851 | { | |
852 | mutex_lock(&bq2415x_timer_mutex); | |
853 | ||
854 | if (bq->autotimer == state) { | |
855 | mutex_unlock(&bq2415x_timer_mutex); | |
856 | return; | |
857 | } | |
858 | ||
859 | bq->autotimer = state; | |
860 | ||
861 | if (state) { | |
862 | schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ); | |
863 | bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); | |
864 | bq->timer_error = NULL; | |
865 | } else { | |
866 | cancel_delayed_work_sync(&bq->work); | |
867 | } | |
868 | ||
869 | mutex_unlock(&bq2415x_timer_mutex); | |
870 | } | |
871 | ||
872 | /* called by bq2415x_timer_work on timer error */ | |
873 | static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg) | |
874 | { | |
875 | bq->timer_error = msg; | |
297d716f | 876 | sysfs_notify(&bq->charger->dev.kobj, NULL, "timer"); |
0bc98cc6 PR |
877 | dev_err(bq->dev, "%s\n", msg); |
878 | if (bq->automode > 0) | |
879 | bq->automode = 0; | |
ac6324e7 | 880 | bq2415x_set_mode(bq, BQ2415X_MODE_OFF); |
0bc98cc6 PR |
881 | bq2415x_set_autotimer(bq, 0); |
882 | } | |
883 | ||
884 | /* delayed work function for auto resetting chip timer */ | |
885 | static void bq2415x_timer_work(struct work_struct *work) | |
886 | { | |
887 | struct bq2415x_device *bq = container_of(work, struct bq2415x_device, | |
6c47a3e0 AV |
888 | work.work); |
889 | int ret; | |
890 | int error; | |
891 | int boost; | |
0bc98cc6 | 892 | |
3c018504 | 893 | if (bq->automode > 0 && (bq->reported_mode != bq->mode)) { |
297d716f | 894 | sysfs_notify(&bq->charger->dev.kobj, NULL, "reported_mode"); |
3c018504 SR |
895 | bq2415x_set_mode(bq, bq->reported_mode); |
896 | } | |
897 | ||
0bc98cc6 PR |
898 | if (!bq->autotimer) |
899 | return; | |
900 | ||
901 | ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); | |
902 | if (ret < 0) { | |
903 | bq2415x_timer_error(bq, "Resetting timer failed"); | |
904 | return; | |
905 | } | |
906 | ||
907 | boost = bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_STATUS); | |
908 | if (boost < 0) { | |
909 | bq2415x_timer_error(bq, "Unknown error"); | |
910 | return; | |
911 | } | |
912 | ||
913 | error = bq2415x_exec_command(bq, BQ2415X_FAULT_STATUS); | |
914 | if (error < 0) { | |
915 | bq2415x_timer_error(bq, "Unknown error"); | |
916 | return; | |
917 | } | |
918 | ||
919 | if (boost) { | |
920 | switch (error) { | |
921 | /* Non fatal errors, chip is OK */ | |
922 | case 0: /* No error */ | |
923 | break; | |
924 | case 6: /* Timer expired */ | |
925 | dev_err(bq->dev, "Timer expired\n"); | |
926 | break; | |
927 | case 3: /* Battery voltage too low */ | |
928 | dev_err(bq->dev, "Battery voltage to low\n"); | |
929 | break; | |
930 | ||
931 | /* Fatal errors, disable and reset chip */ | |
932 | case 1: /* Overvoltage protection (chip fried) */ | |
933 | bq2415x_timer_error(bq, | |
934 | "Overvoltage protection (chip fried)"); | |
935 | return; | |
936 | case 2: /* Overload */ | |
937 | bq2415x_timer_error(bq, "Overload"); | |
938 | return; | |
939 | case 4: /* Battery overvoltage protection */ | |
940 | bq2415x_timer_error(bq, | |
941 | "Battery overvoltage protection"); | |
942 | return; | |
943 | case 5: /* Thermal shutdown (too hot) */ | |
944 | bq2415x_timer_error(bq, | |
945 | "Thermal shutdown (too hot)"); | |
946 | return; | |
947 | case 7: /* N/A */ | |
948 | bq2415x_timer_error(bq, "Unknown error"); | |
949 | return; | |
950 | } | |
951 | } else { | |
952 | switch (error) { | |
953 | /* Non fatal errors, chip is OK */ | |
954 | case 0: /* No error */ | |
955 | break; | |
956 | case 2: /* Sleep mode */ | |
957 | dev_err(bq->dev, "Sleep mode\n"); | |
958 | break; | |
959 | case 3: /* Poor input source */ | |
960 | dev_err(bq->dev, "Poor input source\n"); | |
961 | break; | |
962 | case 6: /* Timer expired */ | |
963 | dev_err(bq->dev, "Timer expired\n"); | |
964 | break; | |
965 | case 7: /* No battery */ | |
966 | dev_err(bq->dev, "No battery\n"); | |
967 | break; | |
968 | ||
969 | /* Fatal errors, disable and reset chip */ | |
970 | case 1: /* Overvoltage protection (chip fried) */ | |
971 | bq2415x_timer_error(bq, | |
972 | "Overvoltage protection (chip fried)"); | |
973 | return; | |
974 | case 4: /* Battery overvoltage protection */ | |
975 | bq2415x_timer_error(bq, | |
976 | "Battery overvoltage protection"); | |
977 | return; | |
978 | case 5: /* Thermal shutdown (too hot) */ | |
979 | bq2415x_timer_error(bq, | |
980 | "Thermal shutdown (too hot)"); | |
981 | return; | |
982 | } | |
983 | } | |
984 | ||
985 | schedule_delayed_work(&bq->work, BQ2415X_TIMER_TIMEOUT * HZ); | |
986 | } | |
987 | ||
988 | /**** power supply interface code ****/ | |
989 | ||
990 | static enum power_supply_property bq2415x_power_supply_props[] = { | |
991 | /* TODO: maybe add more power supply properties */ | |
992 | POWER_SUPPLY_PROP_STATUS, | |
993 | POWER_SUPPLY_PROP_MODEL_NAME, | |
994 | }; | |
995 | ||
996 | static int bq2415x_power_supply_get_property(struct power_supply *psy, | |
6c47a3e0 AV |
997 | enum power_supply_property psp, |
998 | union power_supply_propval *val) | |
0bc98cc6 | 999 | { |
297d716f | 1000 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1001 | int ret; |
1002 | ||
1003 | switch (psp) { | |
1004 | case POWER_SUPPLY_PROP_STATUS: | |
1005 | ret = bq2415x_exec_command(bq, BQ2415X_CHARGE_STATUS); | |
1006 | if (ret < 0) | |
1007 | return ret; | |
1008 | else if (ret == 0) /* Ready */ | |
1009 | val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; | |
1010 | else if (ret == 1) /* Charge in progress */ | |
1011 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
1012 | else if (ret == 2) /* Charge done */ | |
1013 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
1014 | else | |
1015 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; | |
1016 | break; | |
1017 | case POWER_SUPPLY_PROP_MODEL_NAME: | |
1018 | val->strval = bq->model; | |
1019 | break; | |
1020 | default: | |
1021 | return -EINVAL; | |
1022 | } | |
1023 | return 0; | |
1024 | } | |
1025 | ||
0bc98cc6 PR |
1026 | static void bq2415x_power_supply_exit(struct bq2415x_device *bq) |
1027 | { | |
1028 | bq->autotimer = 0; | |
1029 | if (bq->automode > 0) | |
1030 | bq->automode = 0; | |
1031 | cancel_delayed_work_sync(&bq->work); | |
297d716f | 1032 | power_supply_unregister(bq->charger); |
0bc98cc6 PR |
1033 | kfree(bq->model); |
1034 | } | |
1035 | ||
1036 | /**** additional sysfs entries for power supply interface ****/ | |
1037 | ||
1038 | /* show *_status entries */ | |
1039 | static ssize_t bq2415x_sysfs_show_status(struct device *dev, | |
6c47a3e0 AV |
1040 | struct device_attribute *attr, |
1041 | char *buf) | |
0bc98cc6 PR |
1042 | { |
1043 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1044 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1045 | enum bq2415x_command command; |
1046 | int ret; | |
1047 | ||
1048 | if (strcmp(attr->attr.name, "otg_status") == 0) | |
1049 | command = BQ2415X_OTG_STATUS; | |
1050 | else if (strcmp(attr->attr.name, "charge_status") == 0) | |
1051 | command = BQ2415X_CHARGE_STATUS; | |
1052 | else if (strcmp(attr->attr.name, "boost_status") == 0) | |
1053 | command = BQ2415X_BOOST_STATUS; | |
1054 | else if (strcmp(attr->attr.name, "fault_status") == 0) | |
1055 | command = BQ2415X_FAULT_STATUS; | |
1056 | else | |
1057 | return -EINVAL; | |
1058 | ||
1059 | ret = bq2415x_exec_command(bq, command); | |
1060 | if (ret < 0) | |
1061 | return ret; | |
6c47a3e0 | 1062 | return sprintf(buf, "%d\n", ret); |
0bc98cc6 PR |
1063 | } |
1064 | ||
6c47a3e0 AV |
1065 | /* |
1066 | * set timer entry: | |
1067 | * auto - enable auto mode | |
1068 | * off - disable auto mode | |
1069 | * (other values) - reset chip timer | |
1070 | */ | |
0bc98cc6 | 1071 | static ssize_t bq2415x_sysfs_set_timer(struct device *dev, |
6c47a3e0 AV |
1072 | struct device_attribute *attr, |
1073 | const char *buf, | |
1074 | size_t count) | |
0bc98cc6 PR |
1075 | { |
1076 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1077 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1078 | int ret = 0; |
1079 | ||
1080 | if (strncmp(buf, "auto", 4) == 0) | |
1081 | bq2415x_set_autotimer(bq, 1); | |
1082 | else if (strncmp(buf, "off", 3) == 0) | |
1083 | bq2415x_set_autotimer(bq, 0); | |
1084 | else | |
1085 | ret = bq2415x_exec_command(bq, BQ2415X_TIMER_RESET); | |
1086 | ||
1087 | if (ret < 0) | |
1088 | return ret; | |
6c47a3e0 | 1089 | return count; |
0bc98cc6 PR |
1090 | } |
1091 | ||
1092 | /* show timer entry (auto or off) */ | |
1093 | static ssize_t bq2415x_sysfs_show_timer(struct device *dev, | |
6c47a3e0 AV |
1094 | struct device_attribute *attr, |
1095 | char *buf) | |
0bc98cc6 PR |
1096 | { |
1097 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1098 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1099 | |
1100 | if (bq->timer_error) | |
1101 | return sprintf(buf, "%s\n", bq->timer_error); | |
1102 | ||
1103 | if (bq->autotimer) | |
1104 | return sprintf(buf, "auto\n"); | |
6c47a3e0 | 1105 | return sprintf(buf, "off\n"); |
0bc98cc6 PR |
1106 | } |
1107 | ||
6c47a3e0 AV |
1108 | /* |
1109 | * set mode entry: | |
1110 | * auto - if automode is supported, enable it and set mode to reported | |
1111 | * none - disable charger and boost mode | |
1112 | * host - charging mode for host/hub chargers (current limit 500mA) | |
1113 | * dedicated - charging mode for dedicated chargers (unlimited current limit) | |
1114 | * boost - disable charger and enable boost mode | |
1115 | */ | |
0bc98cc6 | 1116 | static ssize_t bq2415x_sysfs_set_mode(struct device *dev, |
6c47a3e0 AV |
1117 | struct device_attribute *attr, |
1118 | const char *buf, | |
1119 | size_t count) | |
0bc98cc6 PR |
1120 | { |
1121 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1122 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1123 | enum bq2415x_mode mode; |
1124 | int ret = 0; | |
1125 | ||
1126 | if (strncmp(buf, "auto", 4) == 0) { | |
1127 | if (bq->automode < 0) | |
f6d8b774 | 1128 | return -EINVAL; |
0bc98cc6 PR |
1129 | bq->automode = 1; |
1130 | mode = bq->reported_mode; | |
ac6324e7 PR |
1131 | } else if (strncmp(buf, "off", 3) == 0) { |
1132 | if (bq->automode > 0) | |
1133 | bq->automode = 0; | |
1134 | mode = BQ2415X_MODE_OFF; | |
0bc98cc6 PR |
1135 | } else if (strncmp(buf, "none", 4) == 0) { |
1136 | if (bq->automode > 0) | |
1137 | bq->automode = 0; | |
1138 | mode = BQ2415X_MODE_NONE; | |
1139 | } else if (strncmp(buf, "host", 4) == 0) { | |
1140 | if (bq->automode > 0) | |
1141 | bq->automode = 0; | |
1142 | mode = BQ2415X_MODE_HOST_CHARGER; | |
1143 | } else if (strncmp(buf, "dedicated", 9) == 0) { | |
1144 | if (bq->automode > 0) | |
1145 | bq->automode = 0; | |
1146 | mode = BQ2415X_MODE_DEDICATED_CHARGER; | |
1147 | } else if (strncmp(buf, "boost", 5) == 0) { | |
1148 | if (bq->automode > 0) | |
1149 | bq->automode = 0; | |
1150 | mode = BQ2415X_MODE_BOOST; | |
1151 | } else if (strncmp(buf, "reset", 5) == 0) { | |
1152 | bq2415x_reset_chip(bq); | |
1153 | bq2415x_set_defaults(bq); | |
1154 | if (bq->automode <= 0) | |
1155 | return count; | |
1156 | bq->automode = 1; | |
1157 | mode = bq->reported_mode; | |
6c47a3e0 | 1158 | } else { |
0bc98cc6 | 1159 | return -EINVAL; |
6c47a3e0 | 1160 | } |
0bc98cc6 PR |
1161 | |
1162 | ret = bq2415x_set_mode(bq, mode); | |
1163 | if (ret < 0) | |
1164 | return ret; | |
6c47a3e0 | 1165 | return count; |
0bc98cc6 PR |
1166 | } |
1167 | ||
1168 | /* show mode entry (auto, none, host, dedicated or boost) */ | |
1169 | static ssize_t bq2415x_sysfs_show_mode(struct device *dev, | |
6c47a3e0 AV |
1170 | struct device_attribute *attr, |
1171 | char *buf) | |
0bc98cc6 PR |
1172 | { |
1173 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1174 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1175 | ssize_t ret = 0; |
1176 | ||
1177 | if (bq->automode > 0) | |
1178 | ret += sprintf(buf+ret, "auto ("); | |
1179 | ||
1180 | switch (bq->mode) { | |
ac6324e7 PR |
1181 | case BQ2415X_MODE_OFF: |
1182 | ret += sprintf(buf+ret, "off"); | |
1183 | break; | |
0bc98cc6 PR |
1184 | case BQ2415X_MODE_NONE: |
1185 | ret += sprintf(buf+ret, "none"); | |
1186 | break; | |
1187 | case BQ2415X_MODE_HOST_CHARGER: | |
1188 | ret += sprintf(buf+ret, "host"); | |
1189 | break; | |
1190 | case BQ2415X_MODE_DEDICATED_CHARGER: | |
1191 | ret += sprintf(buf+ret, "dedicated"); | |
1192 | break; | |
1193 | case BQ2415X_MODE_BOOST: | |
1194 | ret += sprintf(buf+ret, "boost"); | |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | if (bq->automode > 0) | |
1199 | ret += sprintf(buf+ret, ")"); | |
1200 | ||
1201 | ret += sprintf(buf+ret, "\n"); | |
1202 | return ret; | |
1203 | } | |
1204 | ||
1205 | /* show reported_mode entry (none, host, dedicated or boost) */ | |
1206 | static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev, | |
6c47a3e0 AV |
1207 | struct device_attribute *attr, |
1208 | char *buf) | |
0bc98cc6 PR |
1209 | { |
1210 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1211 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1212 | |
1213 | if (bq->automode < 0) | |
1214 | return -EINVAL; | |
1215 | ||
1216 | switch (bq->reported_mode) { | |
ac6324e7 PR |
1217 | case BQ2415X_MODE_OFF: |
1218 | return sprintf(buf, "off\n"); | |
0bc98cc6 PR |
1219 | case BQ2415X_MODE_NONE: |
1220 | return sprintf(buf, "none\n"); | |
1221 | case BQ2415X_MODE_HOST_CHARGER: | |
1222 | return sprintf(buf, "host\n"); | |
1223 | case BQ2415X_MODE_DEDICATED_CHARGER: | |
1224 | return sprintf(buf, "dedicated\n"); | |
1225 | case BQ2415X_MODE_BOOST: | |
1226 | return sprintf(buf, "boost\n"); | |
1227 | } | |
1228 | ||
1229 | return -EINVAL; | |
1230 | } | |
1231 | ||
1232 | /* directly set raw value to chip register, format: 'register value' */ | |
1233 | static ssize_t bq2415x_sysfs_set_registers(struct device *dev, | |
6c47a3e0 AV |
1234 | struct device_attribute *attr, |
1235 | const char *buf, | |
1236 | size_t count) | |
0bc98cc6 PR |
1237 | { |
1238 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1239 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1240 | ssize_t ret = 0; |
1241 | unsigned int reg; | |
1242 | unsigned int val; | |
1243 | ||
1244 | if (sscanf(buf, "%x %x", ®, &val) != 2) | |
1245 | return -EINVAL; | |
1246 | ||
1247 | if (reg > 4 || val > 255) | |
1248 | return -EINVAL; | |
1249 | ||
1250 | ret = bq2415x_i2c_write(bq, reg, val); | |
1251 | if (ret < 0) | |
1252 | return ret; | |
6c47a3e0 | 1253 | return count; |
0bc98cc6 PR |
1254 | } |
1255 | ||
1256 | /* print value of chip register, format: 'register=value' */ | |
1257 | static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq, | |
6c47a3e0 AV |
1258 | u8 reg, |
1259 | char *buf) | |
0bc98cc6 PR |
1260 | { |
1261 | int ret = bq2415x_i2c_read(bq, reg); | |
6c47a3e0 | 1262 | |
0bc98cc6 PR |
1263 | if (ret < 0) |
1264 | return sprintf(buf, "%#.2x=error %d\n", reg, ret); | |
6c47a3e0 | 1265 | return sprintf(buf, "%#.2x=%#.2x\n", reg, ret); |
0bc98cc6 PR |
1266 | } |
1267 | ||
1268 | /* show all raw values of chip register, format per line: 'register=value' */ | |
1269 | static ssize_t bq2415x_sysfs_show_registers(struct device *dev, | |
6c47a3e0 AV |
1270 | struct device_attribute *attr, |
1271 | char *buf) | |
0bc98cc6 PR |
1272 | { |
1273 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1274 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1275 | ssize_t ret = 0; |
1276 | ||
1277 | ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_STATUS, buf+ret); | |
1278 | ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CONTROL, buf+ret); | |
1279 | ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VOLTAGE, buf+ret); | |
1280 | ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_VENDER, buf+ret); | |
1281 | ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_CURRENT, buf+ret); | |
1282 | return ret; | |
1283 | } | |
1284 | ||
1285 | /* set current and voltage limit entries (in mA or mV) */ | |
1286 | static ssize_t bq2415x_sysfs_set_limit(struct device *dev, | |
6c47a3e0 AV |
1287 | struct device_attribute *attr, |
1288 | const char *buf, | |
1289 | size_t count) | |
0bc98cc6 PR |
1290 | { |
1291 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1292 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1293 | long val; |
1294 | int ret; | |
1295 | ||
1296 | if (kstrtol(buf, 10, &val) < 0) | |
1297 | return -EINVAL; | |
1298 | ||
1299 | if (strcmp(attr->attr.name, "current_limit") == 0) | |
1300 | ret = bq2415x_set_current_limit(bq, val); | |
1301 | else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0) | |
1302 | ret = bq2415x_set_weak_battery_voltage(bq, val); | |
1303 | else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0) | |
1304 | ret = bq2415x_set_battery_regulation_voltage(bq, val); | |
1305 | else if (strcmp(attr->attr.name, "charge_current") == 0) | |
1306 | ret = bq2415x_set_charge_current(bq, val); | |
1307 | else if (strcmp(attr->attr.name, "termination_current") == 0) | |
1308 | ret = bq2415x_set_termination_current(bq, val); | |
1309 | else | |
1310 | return -EINVAL; | |
1311 | ||
1312 | if (ret < 0) | |
1313 | return ret; | |
6c47a3e0 | 1314 | return count; |
0bc98cc6 PR |
1315 | } |
1316 | ||
1317 | /* show current and voltage limit entries (in mA or mV) */ | |
1318 | static ssize_t bq2415x_sysfs_show_limit(struct device *dev, | |
6c47a3e0 AV |
1319 | struct device_attribute *attr, |
1320 | char *buf) | |
0bc98cc6 PR |
1321 | { |
1322 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1323 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1324 | int ret; |
1325 | ||
1326 | if (strcmp(attr->attr.name, "current_limit") == 0) | |
1327 | ret = bq2415x_get_current_limit(bq); | |
1328 | else if (strcmp(attr->attr.name, "weak_battery_voltage") == 0) | |
1329 | ret = bq2415x_get_weak_battery_voltage(bq); | |
1330 | else if (strcmp(attr->attr.name, "battery_regulation_voltage") == 0) | |
1331 | ret = bq2415x_get_battery_regulation_voltage(bq); | |
1332 | else if (strcmp(attr->attr.name, "charge_current") == 0) | |
1333 | ret = bq2415x_get_charge_current(bq); | |
1334 | else if (strcmp(attr->attr.name, "termination_current") == 0) | |
1335 | ret = bq2415x_get_termination_current(bq); | |
1336 | else | |
1337 | return -EINVAL; | |
1338 | ||
1339 | if (ret < 0) | |
1340 | return ret; | |
6c47a3e0 | 1341 | return sprintf(buf, "%d\n", ret); |
0bc98cc6 PR |
1342 | } |
1343 | ||
1344 | /* set *_enable entries */ | |
1345 | static ssize_t bq2415x_sysfs_set_enable(struct device *dev, | |
6c47a3e0 AV |
1346 | struct device_attribute *attr, |
1347 | const char *buf, | |
1348 | size_t count) | |
0bc98cc6 PR |
1349 | { |
1350 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1351 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1352 | enum bq2415x_command command; |
1353 | long val; | |
1354 | int ret; | |
1355 | ||
1356 | if (kstrtol(buf, 10, &val) < 0) | |
1357 | return -EINVAL; | |
1358 | ||
1359 | if (strcmp(attr->attr.name, "charge_termination_enable") == 0) | |
1360 | command = val ? BQ2415X_CHARGE_TERMINATION_ENABLE : | |
1361 | BQ2415X_CHARGE_TERMINATION_DISABLE; | |
1362 | else if (strcmp(attr->attr.name, "high_impedance_enable") == 0) | |
1363 | command = val ? BQ2415X_HIGH_IMPEDANCE_ENABLE : | |
1364 | BQ2415X_HIGH_IMPEDANCE_DISABLE; | |
1365 | else if (strcmp(attr->attr.name, "otg_pin_enable") == 0) | |
1366 | command = val ? BQ2415X_OTG_PIN_ENABLE : | |
1367 | BQ2415X_OTG_PIN_DISABLE; | |
1368 | else if (strcmp(attr->attr.name, "stat_pin_enable") == 0) | |
1369 | command = val ? BQ2415X_STAT_PIN_ENABLE : | |
1370 | BQ2415X_STAT_PIN_DISABLE; | |
1371 | else | |
1372 | return -EINVAL; | |
1373 | ||
1374 | ret = bq2415x_exec_command(bq, command); | |
1375 | if (ret < 0) | |
1376 | return ret; | |
6c47a3e0 | 1377 | return count; |
0bc98cc6 PR |
1378 | } |
1379 | ||
1380 | /* show *_enable entries */ | |
1381 | static ssize_t bq2415x_sysfs_show_enable(struct device *dev, | |
6c47a3e0 AV |
1382 | struct device_attribute *attr, |
1383 | char *buf) | |
0bc98cc6 PR |
1384 | { |
1385 | struct power_supply *psy = dev_get_drvdata(dev); | |
297d716f | 1386 | struct bq2415x_device *bq = power_supply_get_drvdata(psy); |
0bc98cc6 PR |
1387 | enum bq2415x_command command; |
1388 | int ret; | |
1389 | ||
1390 | if (strcmp(attr->attr.name, "charge_termination_enable") == 0) | |
1391 | command = BQ2415X_CHARGE_TERMINATION_STATUS; | |
1392 | else if (strcmp(attr->attr.name, "high_impedance_enable") == 0) | |
1393 | command = BQ2415X_HIGH_IMPEDANCE_STATUS; | |
1394 | else if (strcmp(attr->attr.name, "otg_pin_enable") == 0) | |
1395 | command = BQ2415X_OTG_PIN_STATUS; | |
1396 | else if (strcmp(attr->attr.name, "stat_pin_enable") == 0) | |
1397 | command = BQ2415X_STAT_PIN_STATUS; | |
1398 | else | |
1399 | return -EINVAL; | |
1400 | ||
1401 | ret = bq2415x_exec_command(bq, command); | |
1402 | if (ret < 0) | |
1403 | return ret; | |
6c47a3e0 | 1404 | return sprintf(buf, "%d\n", ret); |
0bc98cc6 PR |
1405 | } |
1406 | ||
1407 | static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO, | |
1408 | bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); | |
1409 | static DEVICE_ATTR(weak_battery_voltage, S_IWUSR | S_IRUGO, | |
1410 | bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); | |
1411 | static DEVICE_ATTR(battery_regulation_voltage, S_IWUSR | S_IRUGO, | |
1412 | bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); | |
1413 | static DEVICE_ATTR(charge_current, S_IWUSR | S_IRUGO, | |
1414 | bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); | |
1415 | static DEVICE_ATTR(termination_current, S_IWUSR | S_IRUGO, | |
1416 | bq2415x_sysfs_show_limit, bq2415x_sysfs_set_limit); | |
1417 | ||
1418 | static DEVICE_ATTR(charge_termination_enable, S_IWUSR | S_IRUGO, | |
1419 | bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); | |
1420 | static DEVICE_ATTR(high_impedance_enable, S_IWUSR | S_IRUGO, | |
1421 | bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); | |
1422 | static DEVICE_ATTR(otg_pin_enable, S_IWUSR | S_IRUGO, | |
1423 | bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); | |
1424 | static DEVICE_ATTR(stat_pin_enable, S_IWUSR | S_IRUGO, | |
1425 | bq2415x_sysfs_show_enable, bq2415x_sysfs_set_enable); | |
1426 | ||
1427 | static DEVICE_ATTR(reported_mode, S_IRUGO, | |
1428 | bq2415x_sysfs_show_reported_mode, NULL); | |
1429 | static DEVICE_ATTR(mode, S_IWUSR | S_IRUGO, | |
1430 | bq2415x_sysfs_show_mode, bq2415x_sysfs_set_mode); | |
1431 | static DEVICE_ATTR(timer, S_IWUSR | S_IRUGO, | |
1432 | bq2415x_sysfs_show_timer, bq2415x_sysfs_set_timer); | |
1433 | ||
1434 | static DEVICE_ATTR(registers, S_IWUSR | S_IRUGO, | |
1435 | bq2415x_sysfs_show_registers, bq2415x_sysfs_set_registers); | |
1436 | ||
1437 | static DEVICE_ATTR(otg_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); | |
1438 | static DEVICE_ATTR(charge_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); | |
1439 | static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); | |
1440 | static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL); | |
1441 | ||
06215ce9 | 1442 | static struct attribute *bq2415x_sysfs_attrs[] = { |
6c47a3e0 AV |
1443 | /* |
1444 | * TODO: some (appropriate) of these attrs should be switched to | |
1445 | * use power supply class props. | |
1446 | */ | |
0bc98cc6 PR |
1447 | &dev_attr_current_limit.attr, |
1448 | &dev_attr_weak_battery_voltage.attr, | |
1449 | &dev_attr_battery_regulation_voltage.attr, | |
1450 | &dev_attr_charge_current.attr, | |
1451 | &dev_attr_termination_current.attr, | |
1452 | ||
1453 | &dev_attr_charge_termination_enable.attr, | |
1454 | &dev_attr_high_impedance_enable.attr, | |
1455 | &dev_attr_otg_pin_enable.attr, | |
1456 | &dev_attr_stat_pin_enable.attr, | |
1457 | ||
1458 | &dev_attr_reported_mode.attr, | |
1459 | &dev_attr_mode.attr, | |
1460 | &dev_attr_timer.attr, | |
1461 | ||
1462 | &dev_attr_registers.attr, | |
1463 | ||
1464 | &dev_attr_otg_status.attr, | |
1465 | &dev_attr_charge_status.attr, | |
1466 | &dev_attr_boost_status.attr, | |
1467 | &dev_attr_fault_status.attr, | |
1468 | NULL, | |
1469 | }; | |
1470 | ||
06215ce9 | 1471 | ATTRIBUTE_GROUPS(bq2415x_sysfs); |
0bc98cc6 | 1472 | |
06215ce9 | 1473 | static int bq2415x_power_supply_init(struct bq2415x_device *bq) |
0bc98cc6 | 1474 | { |
06215ce9 SR |
1475 | int ret; |
1476 | int chip; | |
1477 | char revstr[8]; | |
1478 | struct power_supply_config psy_cfg = { | |
1479 | .drv_data = bq, | |
1480 | .of_node = bq->dev->of_node, | |
1481 | .attr_grp = bq2415x_sysfs_groups, | |
1482 | }; | |
0bc98cc6 | 1483 | |
06215ce9 SR |
1484 | bq->charger_desc.name = bq->name; |
1485 | bq->charger_desc.type = POWER_SUPPLY_TYPE_USB; | |
1486 | bq->charger_desc.properties = bq2415x_power_supply_props; | |
1487 | bq->charger_desc.num_properties = | |
1488 | ARRAY_SIZE(bq2415x_power_supply_props); | |
1489 | bq->charger_desc.get_property = bq2415x_power_supply_get_property; | |
1490 | ||
1491 | ret = bq2415x_detect_chip(bq); | |
1492 | if (ret < 0) | |
1493 | chip = BQUNKNOWN; | |
1494 | else | |
1495 | chip = ret; | |
1496 | ||
1497 | ret = bq2415x_detect_revision(bq); | |
1498 | if (ret < 0) | |
1499 | strcpy(revstr, "unknown"); | |
1500 | else | |
1501 | sprintf(revstr, "1.%d", ret); | |
1502 | ||
1503 | bq->model = kasprintf(GFP_KERNEL, | |
1504 | "chip %s, revision %s, vender code %.3d", | |
1505 | bq2415x_chip_name[chip], revstr, | |
1506 | bq2415x_get_vender_code(bq)); | |
1507 | if (!bq->model) { | |
1508 | dev_err(bq->dev, "failed to allocate model name\n"); | |
1509 | return -ENOMEM; | |
1510 | } | |
1511 | ||
1512 | bq->charger = power_supply_register(bq->dev, &bq->charger_desc, | |
1513 | &psy_cfg); | |
1514 | if (IS_ERR(bq->charger)) { | |
1515 | kfree(bq->model); | |
1516 | return PTR_ERR(bq->charger); | |
1517 | } | |
1518 | ||
1519 | return 0; | |
0bc98cc6 PR |
1520 | } |
1521 | ||
1522 | /* main bq2415x probe function */ | |
1523 | static int bq2415x_probe(struct i2c_client *client, | |
6c47a3e0 | 1524 | const struct i2c_device_id *id) |
0bc98cc6 PR |
1525 | { |
1526 | int ret; | |
1527 | int num; | |
b01e7c3b | 1528 | char *name = NULL; |
0bc98cc6 | 1529 | struct bq2415x_device *bq; |
faffd234 SR |
1530 | struct device_node *np = client->dev.of_node; |
1531 | struct bq2415x_platform_data *pdata = client->dev.platform_data; | |
b01e7c3b | 1532 | const struct acpi_device_id *acpi_id = NULL; |
b68c3161 PR |
1533 | struct power_supply *notify_psy = NULL; |
1534 | union power_supply_propval prop; | |
0bc98cc6 | 1535 | |
b01e7c3b AMN |
1536 | if (!np && !pdata && !ACPI_HANDLE(&client->dev)) { |
1537 | dev_err(&client->dev, "Neither devicetree, nor platform data, nor ACPI support\n"); | |
0bc98cc6 PR |
1538 | return -ENODEV; |
1539 | } | |
1540 | ||
1541 | /* Get new ID for the new device */ | |
0bc98cc6 | 1542 | mutex_lock(&bq2415x_id_mutex); |
05e2cefa | 1543 | num = idr_alloc(&bq2415x_id, client, 0, 0, GFP_KERNEL); |
0bc98cc6 | 1544 | mutex_unlock(&bq2415x_id_mutex); |
05e2cefa TH |
1545 | if (num < 0) |
1546 | return num; | |
0bc98cc6 | 1547 | |
b01e7c3b AMN |
1548 | if (id) { |
1549 | name = kasprintf(GFP_KERNEL, "%s-%d", id->name, num); | |
1550 | } else if (ACPI_HANDLE(&client->dev)) { | |
1551 | acpi_id = | |
1552 | acpi_match_device(client->dev.driver->acpi_match_table, | |
1553 | &client->dev); | |
a1b94355 CIK |
1554 | if (!acpi_id) { |
1555 | dev_err(&client->dev, "failed to match device name\n"); | |
1556 | ret = -ENODEV; | |
1557 | goto error_1; | |
1558 | } | |
b01e7c3b AMN |
1559 | name = kasprintf(GFP_KERNEL, "%s-%d", acpi_id->id, num); |
1560 | } | |
0bc98cc6 PR |
1561 | if (!name) { |
1562 | dev_err(&client->dev, "failed to allocate device name\n"); | |
1563 | ret = -ENOMEM; | |
1564 | goto error_1; | |
1565 | } | |
1566 | ||
a9672e13 | 1567 | bq = devm_kzalloc(&client->dev, sizeof(*bq), GFP_KERNEL); |
0bc98cc6 | 1568 | if (!bq) { |
0bc98cc6 PR |
1569 | ret = -ENOMEM; |
1570 | goto error_2; | |
1571 | } | |
1572 | ||
1573 | i2c_set_clientdata(client, bq); | |
1574 | ||
1575 | bq->id = num; | |
1576 | bq->dev = &client->dev; | |
b01e7c3b AMN |
1577 | if (id) |
1578 | bq->chip = id->driver_data; | |
1579 | else if (ACPI_HANDLE(bq->dev)) | |
1580 | bq->chip = acpi_id->driver_data; | |
0bc98cc6 | 1581 | bq->name = name; |
ac6324e7 PR |
1582 | bq->mode = BQ2415X_MODE_OFF; |
1583 | bq->reported_mode = BQ2415X_MODE_OFF; | |
0bc98cc6 PR |
1584 | bq->autotimer = 0; |
1585 | bq->automode = 0; | |
1586 | ||
b01e7c3b AMN |
1587 | if (np || ACPI_HANDLE(bq->dev)) { |
1588 | ret = device_property_read_u32(bq->dev, | |
1589 | "ti,current-limit", | |
1590 | &bq->init_data.current_limit); | |
faffd234 | 1591 | if (ret) |
b68c3161 | 1592 | goto error_2; |
b01e7c3b AMN |
1593 | ret = device_property_read_u32(bq->dev, |
1594 | "ti,weak-battery-voltage", | |
1595 | &bq->init_data.weak_battery_voltage); | |
faffd234 | 1596 | if (ret) |
b68c3161 | 1597 | goto error_2; |
b01e7c3b AMN |
1598 | ret = device_property_read_u32(bq->dev, |
1599 | "ti,battery-regulation-voltage", | |
faffd234 SR |
1600 | &bq->init_data.battery_regulation_voltage); |
1601 | if (ret) | |
b68c3161 | 1602 | goto error_2; |
b01e7c3b AMN |
1603 | ret = device_property_read_u32(bq->dev, |
1604 | "ti,charge-current", | |
1605 | &bq->init_data.charge_current); | |
faffd234 | 1606 | if (ret) |
b68c3161 | 1607 | goto error_2; |
b01e7c3b AMN |
1608 | ret = device_property_read_u32(bq->dev, |
1609 | "ti,termination-current", | |
1610 | &bq->init_data.termination_current); | |
faffd234 | 1611 | if (ret) |
b68c3161 | 1612 | goto error_2; |
b01e7c3b AMN |
1613 | ret = device_property_read_u32(bq->dev, |
1614 | "ti,resistor-sense", | |
1615 | &bq->init_data.resistor_sense); | |
faffd234 | 1616 | if (ret) |
b68c3161 PR |
1617 | goto error_2; |
1618 | if (np) | |
1619 | bq->notify_node = of_parse_phandle(np, | |
1620 | "ti,usb-charger-detection", 0); | |
faffd234 SR |
1621 | } else { |
1622 | memcpy(&bq->init_data, pdata, sizeof(bq->init_data)); | |
1623 | } | |
0bc98cc6 PR |
1624 | |
1625 | bq2415x_reset_chip(bq); | |
1626 | ||
1627 | ret = bq2415x_power_supply_init(bq); | |
1628 | if (ret) { | |
1629 | dev_err(bq->dev, "failed to register power supply: %d\n", ret); | |
b68c3161 | 1630 | goto error_2; |
0bc98cc6 PR |
1631 | } |
1632 | ||
0bc98cc6 PR |
1633 | ret = bq2415x_set_defaults(bq); |
1634 | if (ret) { | |
1635 | dev_err(bq->dev, "failed to set default values: %d\n", ret); | |
06215ce9 | 1636 | goto error_3; |
0bc98cc6 PR |
1637 | } |
1638 | ||
b68c3161 | 1639 | if (bq->notify_node || bq->init_data.notify_device) { |
32260308 PR |
1640 | bq->nb.notifier_call = bq2415x_notifier_call; |
1641 | ret = power_supply_reg_notifier(&bq->nb); | |
1642 | if (ret) { | |
1643 | dev_err(bq->dev, "failed to reg notifier: %d\n", ret); | |
06215ce9 | 1644 | goto error_3; |
32260308 | 1645 | } |
faffd234 | 1646 | |
32260308 | 1647 | bq->automode = 1; |
b68c3161 | 1648 | dev_info(bq->dev, "automode supported, waiting for events\n"); |
0bc98cc6 PR |
1649 | } else { |
1650 | bq->automode = -1; | |
1651 | dev_info(bq->dev, "automode not supported\n"); | |
1652 | } | |
1653 | ||
b68c3161 PR |
1654 | /* Query for initial reported_mode and set it */ |
1655 | if (bq->nb.notifier_call) { | |
1656 | if (np) { | |
1657 | notify_psy = power_supply_get_by_phandle(np, | |
1658 | "ti,usb-charger-detection"); | |
1659 | if (IS_ERR(notify_psy)) | |
1660 | notify_psy = NULL; | |
1661 | } else if (bq->init_data.notify_device) { | |
1662 | notify_psy = power_supply_get_by_name( | |
1663 | bq->init_data.notify_device); | |
1664 | } | |
1665 | } | |
1666 | if (notify_psy) { | |
1667 | ret = power_supply_get_property(notify_psy, | |
1668 | POWER_SUPPLY_PROP_CURRENT_MAX, &prop); | |
1669 | power_supply_put(notify_psy); | |
1670 | ||
1671 | if (ret == 0) { | |
1672 | bq2415x_update_reported_mode(bq, prop.intval); | |
1673 | bq2415x_set_mode(bq, bq->reported_mode); | |
1674 | } | |
1675 | } | |
1676 | ||
0bc98cc6 PR |
1677 | INIT_DELAYED_WORK(&bq->work, bq2415x_timer_work); |
1678 | bq2415x_set_autotimer(bq, 1); | |
1679 | ||
1680 | dev_info(bq->dev, "driver registered\n"); | |
1681 | return 0; | |
1682 | ||
1a8dbe6f | 1683 | error_3: |
b68c3161 | 1684 | bq2415x_power_supply_exit(bq); |
0bc98cc6 | 1685 | error_2: |
b7e16ec6 | 1686 | if (bq) |
b68c3161 | 1687 | of_node_put(bq->notify_node); |
0bc98cc6 PR |
1688 | kfree(name); |
1689 | error_1: | |
1690 | mutex_lock(&bq2415x_id_mutex); | |
1691 | idr_remove(&bq2415x_id, num); | |
1692 | mutex_unlock(&bq2415x_id_mutex); | |
1693 | ||
1694 | return ret; | |
1695 | } | |
1696 | ||
1697 | /* main bq2415x remove function */ | |
1698 | ||
1699 | static int bq2415x_remove(struct i2c_client *client) | |
1700 | { | |
1701 | struct bq2415x_device *bq = i2c_get_clientdata(client); | |
1702 | ||
b68c3161 | 1703 | if (bq->nb.notifier_call) |
32260308 | 1704 | power_supply_unreg_notifier(&bq->nb); |
b68c3161 | 1705 | |
b7e16ec6 | 1706 | of_node_put(bq->notify_node); |
0bc98cc6 PR |
1707 | bq2415x_power_supply_exit(bq); |
1708 | ||
1709 | bq2415x_reset_chip(bq); | |
1710 | ||
1711 | mutex_lock(&bq2415x_id_mutex); | |
1712 | idr_remove(&bq2415x_id, bq->id); | |
1713 | mutex_unlock(&bq2415x_id_mutex); | |
1714 | ||
1715 | dev_info(bq->dev, "driver unregistered\n"); | |
1716 | ||
1717 | kfree(bq->name); | |
0bc98cc6 PR |
1718 | |
1719 | return 0; | |
1720 | } | |
1721 | ||
1722 | static const struct i2c_device_id bq2415x_i2c_id_table[] = { | |
1723 | { "bq2415x", BQUNKNOWN }, | |
1724 | { "bq24150", BQ24150 }, | |
1725 | { "bq24150a", BQ24150A }, | |
1726 | { "bq24151", BQ24151 }, | |
1727 | { "bq24151a", BQ24151A }, | |
1728 | { "bq24152", BQ24152 }, | |
1729 | { "bq24153", BQ24153 }, | |
1730 | { "bq24153a", BQ24153A }, | |
1731 | { "bq24155", BQ24155 }, | |
1732 | { "bq24156", BQ24156 }, | |
1733 | { "bq24156a", BQ24156A }, | |
0e1392d9 | 1734 | { "bq24157s", BQ24157S }, |
0bc98cc6 PR |
1735 | { "bq24158", BQ24158 }, |
1736 | {}, | |
1737 | }; | |
1738 | MODULE_DEVICE_TABLE(i2c, bq2415x_i2c_id_table); | |
1739 | ||
ec3d7d08 | 1740 | #ifdef CONFIG_ACPI |
b01e7c3b AMN |
1741 | static const struct acpi_device_id bq2415x_i2c_acpi_match[] = { |
1742 | { "BQ2415X", BQUNKNOWN }, | |
1743 | { "BQ241500", BQ24150 }, | |
1744 | { "BQA24150", BQ24150A }, | |
1745 | { "BQ241510", BQ24151 }, | |
1746 | { "BQA24151", BQ24151A }, | |
1747 | { "BQ241520", BQ24152 }, | |
1748 | { "BQ241530", BQ24153 }, | |
1749 | { "BQA24153", BQ24153A }, | |
1750 | { "BQ241550", BQ24155 }, | |
1751 | { "BQ241560", BQ24156 }, | |
1752 | { "BQA24156", BQ24156A }, | |
1753 | { "BQS24157", BQ24157S }, | |
1754 | { "BQ241580", BQ24158 }, | |
1755 | {}, | |
1756 | }; | |
1757 | MODULE_DEVICE_TABLE(acpi, bq2415x_i2c_acpi_match); | |
ec3d7d08 | 1758 | #endif |
b01e7c3b | 1759 | |
523e5501 PR |
1760 | #ifdef CONFIG_OF |
1761 | static const struct of_device_id bq2415x_of_match_table[] = { | |
1762 | { .compatible = "ti,bq24150" }, | |
1763 | { .compatible = "ti,bq24150a" }, | |
1764 | { .compatible = "ti,bq24151" }, | |
1765 | { .compatible = "ti,bq24151a" }, | |
1766 | { .compatible = "ti,bq24152" }, | |
1767 | { .compatible = "ti,bq24153" }, | |
1768 | { .compatible = "ti,bq24153a" }, | |
1769 | { .compatible = "ti,bq24155" }, | |
1770 | { .compatible = "ti,bq24156" }, | |
1771 | { .compatible = "ti,bq24156a" }, | |
1772 | { .compatible = "ti,bq24157s" }, | |
1773 | { .compatible = "ti,bq24158" }, | |
1774 | {}, | |
1775 | }; | |
1776 | MODULE_DEVICE_TABLE(of, bq2415x_of_match_table); | |
1777 | #endif | |
1778 | ||
0bc98cc6 PR |
1779 | static struct i2c_driver bq2415x_driver = { |
1780 | .driver = { | |
1781 | .name = "bq2415x-charger", | |
523e5501 | 1782 | .of_match_table = of_match_ptr(bq2415x_of_match_table), |
b01e7c3b | 1783 | .acpi_match_table = ACPI_PTR(bq2415x_i2c_acpi_match), |
0bc98cc6 PR |
1784 | }, |
1785 | .probe = bq2415x_probe, | |
1786 | .remove = bq2415x_remove, | |
1787 | .id_table = bq2415x_i2c_id_table, | |
1788 | }; | |
463df514 | 1789 | module_i2c_driver(bq2415x_driver); |
0bc98cc6 | 1790 | |
149ed3d4 | 1791 | MODULE_AUTHOR("Pali Rohár <pali@kernel.org>"); |
0bc98cc6 PR |
1792 | MODULE_DESCRIPTION("bq2415x charger driver"); |
1793 | MODULE_LICENSE("GPL"); |