1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * BQ27xxx battery driver
4 *
5 * Copyright (C) 2008 Rodolfo Giometti <giometti@linux.it>
6 * Copyright (C) 2008 Eurotech S.p.A. <info@eurotech.it>
7 * Copyright (C) 2010-2011 Lars-Peter Clausen <lars@metafoo.de>
8 * Copyright (C) 2011 Pali Rohár <pali@kernel.org>
9 * Copyright (C) 2017 Liam Breck <kernel@networkimprov.net>
10 *
11 * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
12 *
13 * Datasheets:
14 * https://www.ti.com/product/bq27000
15 * https://www.ti.com/product/bq27200
16 * https://www.ti.com/product/bq27010
17 * https://www.ti.com/product/bq27210
18 * https://www.ti.com/product/bq27500
19 * https://www.ti.com/product/bq27510-g1
20 * https://www.ti.com/product/bq27510-g2
21 * https://www.ti.com/product/bq27510-g3
22 * https://www.ti.com/product/bq27520-g1
23 * https://www.ti.com/product/bq27520-g2
24 * https://www.ti.com/product/bq27520-g3
25 * https://www.ti.com/product/bq27520-g4
26 * https://www.ti.com/product/bq27530-g1
27 * https://www.ti.com/product/bq27531-g1
28 * https://www.ti.com/product/bq27541-g1
29 * https://www.ti.com/product/bq27542-g1
30 * https://www.ti.com/product/bq27546-g1
31 * https://www.ti.com/product/bq27742-g1
32 * https://www.ti.com/product/bq27545-g1
33 * https://www.ti.com/product/bq27421-g1
34 * https://www.ti.com/product/bq27425-g1
35 * https://www.ti.com/product/bq27426
36 * https://www.ti.com/product/bq27411-g1
37 * https://www.ti.com/product/bq27441-g1
38 * https://www.ti.com/product/bq27621-g1
39 * https://www.ti.com/product/bq27z561
40 * https://www.ti.com/product/bq28z610
41 * https://www.ti.com/product/bq34z100-g1
42 * https://www.ti.com/product/bq78z100
43 */
44
45 #include <linux/device.h>
46 #include <linux/module.h>
47 #include <linux/mutex.h>
48 #include <linux/param.h>
49 #include <linux/jiffies.h>
50 #include <linux/workqueue.h>
51 #include <linux/delay.h>
52 #include <linux/platform_device.h>
53 #include <linux/power_supply.h>
54 #include <linux/slab.h>
55 #include <linux/of.h>
56
57 #include <linux/power/bq27xxx_battery.h>
58
59 #define BQ27XXX_MANUFACTURER "Texas Instruments"
60
61 /* BQ27XXX Flags */
62 #define BQ27XXX_FLAG_DSC BIT(0)
63 #define BQ27XXX_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
64 #define BQ27XXX_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
65 #define BQ27XXX_FLAG_CFGUP BIT(4)
66 #define BQ27XXX_FLAG_FC BIT(9)
67 #define BQ27XXX_FLAG_OTD BIT(14)
68 #define BQ27XXX_FLAG_OTC BIT(15)
69 #define BQ27XXX_FLAG_UT BIT(14)
70 #define BQ27XXX_FLAG_OT BIT(15)
71
72 /* BQ27000 has different layout for Flags register */
73 #define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
74 #define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
75 #define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
76 #define BQ27000_FLAG_FC BIT(5)
77 #define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
78
79 /* BQ27Z561 has different layout for Flags register */
80 #define BQ27Z561_FLAG_FDC BIT(4) /* Battery fully discharged */
81 #define BQ27Z561_FLAG_FC BIT(5) /* Battery fully charged */
82 #define BQ27Z561_FLAG_DIS_CH BIT(6) /* Battery is discharging */
83
84 /* control register params */
85 #define BQ27XXX_SEALED 0x20
86 #define BQ27XXX_SET_CFGUPDATE 0x13
87 #define BQ27XXX_SOFT_RESET 0x42
88 #define BQ27XXX_RESET 0x41
89
90 #define BQ27XXX_RS (20) /* Resistor sense mOhm */
91 #define BQ27XXX_POWER_CONSTANT (29200) /* 29.2 µV^2 * 1000 */
92 #define BQ27XXX_CURRENT_CONSTANT (3570) /* 3.57 µV * 1000 */
93
94 #define INVALID_REG_ADDR 0xff
95
96 /*
97 * bq27xxx_reg_index - Register names
98 *
99 * These are indexes into a device's register mapping array.
100 */
101
102 enum bq27xxx_reg_index {
103 BQ27XXX_REG_CTRL = 0, /* Control */
104 BQ27XXX_REG_TEMP, /* Temperature */
105 BQ27XXX_REG_INT_TEMP, /* Internal Temperature */
106 BQ27XXX_REG_VOLT, /* Voltage */
107 BQ27XXX_REG_AI, /* Average Current */
108 BQ27XXX_REG_FLAGS, /* Flags */
109 BQ27XXX_REG_TTE, /* Time-to-Empty */
110 BQ27XXX_REG_TTF, /* Time-to-Full */
111 BQ27XXX_REG_TTES, /* Time-to-Empty Standby */
112 BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */
113 BQ27XXX_REG_NAC, /* Nominal Available Capacity */
114 BQ27XXX_REG_RC, /* Remaining Capacity */
115 BQ27XXX_REG_FCC, /* Full Charge Capacity */
116 BQ27XXX_REG_CYCT, /* Cycle Count */
117 BQ27XXX_REG_AE, /* Available Energy */
118 BQ27XXX_REG_SOC, /* State-of-Charge */
119 BQ27XXX_REG_DCAP, /* Design Capacity */
120 BQ27XXX_REG_AP, /* Average Power */
121 BQ27XXX_DM_CTRL, /* Block Data Control */
122 BQ27XXX_DM_CLASS, /* Data Class */
123 BQ27XXX_DM_BLOCK, /* Data Block */
124 BQ27XXX_DM_DATA, /* Block Data */
125 BQ27XXX_DM_CKSUM, /* Block Data Checksum */
126 BQ27XXX_REG_MAX, /* sentinel */
127 };
128
129 #define BQ27XXX_DM_REG_ROWS \
130 [BQ27XXX_DM_CTRL] = 0x61, \
131 [BQ27XXX_DM_CLASS] = 0x3e, \
132 [BQ27XXX_DM_BLOCK] = 0x3f, \
133 [BQ27XXX_DM_DATA] = 0x40, \
134 [BQ27XXX_DM_CKSUM] = 0x60
135
136 /* Register mappings */
137 static u8
138 bq27000_regs[BQ27XXX_REG_MAX] = {
139 [BQ27XXX_REG_CTRL] = 0x00,
140 [BQ27XXX_REG_TEMP] = 0x06,
141 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
142 [BQ27XXX_REG_VOLT] = 0x08,
143 [BQ27XXX_REG_AI] = 0x14,
144 [BQ27XXX_REG_FLAGS] = 0x0a,
145 [BQ27XXX_REG_TTE] = 0x16,
146 [BQ27XXX_REG_TTF] = 0x18,
147 [BQ27XXX_REG_TTES] = 0x1c,
148 [BQ27XXX_REG_TTECP] = 0x26,
149 [BQ27XXX_REG_NAC] = 0x0c,
150 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
151 [BQ27XXX_REG_FCC] = 0x12,
152 [BQ27XXX_REG_CYCT] = 0x2a,
153 [BQ27XXX_REG_AE] = 0x22,
154 [BQ27XXX_REG_SOC] = 0x0b,
155 [BQ27XXX_REG_DCAP] = 0x76,
156 [BQ27XXX_REG_AP] = 0x24,
157 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
158 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
159 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
160 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
161 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
162 },
163 bq27010_regs[BQ27XXX_REG_MAX] = {
164 [BQ27XXX_REG_CTRL] = 0x00,
165 [BQ27XXX_REG_TEMP] = 0x06,
166 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
167 [BQ27XXX_REG_VOLT] = 0x08,
168 [BQ27XXX_REG_AI] = 0x14,
169 [BQ27XXX_REG_FLAGS] = 0x0a,
170 [BQ27XXX_REG_TTE] = 0x16,
171 [BQ27XXX_REG_TTF] = 0x18,
172 [BQ27XXX_REG_TTES] = 0x1c,
173 [BQ27XXX_REG_TTECP] = 0x26,
174 [BQ27XXX_REG_NAC] = 0x0c,
175 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
176 [BQ27XXX_REG_FCC] = 0x12,
177 [BQ27XXX_REG_CYCT] = 0x2a,
178 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
179 [BQ27XXX_REG_SOC] = 0x0b,
180 [BQ27XXX_REG_DCAP] = 0x76,
181 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
182 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
183 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
184 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
185 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
186 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
187 },
188 bq2750x_regs[BQ27XXX_REG_MAX] = {
189 [BQ27XXX_REG_CTRL] = 0x00,
190 [BQ27XXX_REG_TEMP] = 0x06,
191 [BQ27XXX_REG_INT_TEMP] = 0x28,
192 [BQ27XXX_REG_VOLT] = 0x08,
193 [BQ27XXX_REG_AI] = 0x14,
194 [BQ27XXX_REG_FLAGS] = 0x0a,
195 [BQ27XXX_REG_TTE] = 0x16,
196 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
197 [BQ27XXX_REG_TTES] = 0x1a,
198 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
199 [BQ27XXX_REG_NAC] = 0x0c,
200 [BQ27XXX_REG_RC] = 0x10,
201 [BQ27XXX_REG_FCC] = 0x12,
202 [BQ27XXX_REG_CYCT] = 0x2a,
203 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
204 [BQ27XXX_REG_SOC] = 0x2c,
205 [BQ27XXX_REG_DCAP] = 0x3c,
206 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
207 BQ27XXX_DM_REG_ROWS,
208 },
209 #define bq2751x_regs bq27510g3_regs
210 #define bq2752x_regs bq27510g3_regs
211 bq27500_regs[BQ27XXX_REG_MAX] = {
212 [BQ27XXX_REG_CTRL] = 0x00,
213 [BQ27XXX_REG_TEMP] = 0x06,
214 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
215 [BQ27XXX_REG_VOLT] = 0x08,
216 [BQ27XXX_REG_AI] = 0x14,
217 [BQ27XXX_REG_FLAGS] = 0x0a,
218 [BQ27XXX_REG_TTE] = 0x16,
219 [BQ27XXX_REG_TTF] = 0x18,
220 [BQ27XXX_REG_TTES] = 0x1c,
221 [BQ27XXX_REG_TTECP] = 0x26,
222 [BQ27XXX_REG_NAC] = 0x0c,
223 [BQ27XXX_REG_RC] = 0x10,
224 [BQ27XXX_REG_FCC] = 0x12,
225 [BQ27XXX_REG_CYCT] = 0x2a,
226 [BQ27XXX_REG_AE] = 0x22,
227 [BQ27XXX_REG_SOC] = 0x2c,
228 [BQ27XXX_REG_DCAP] = 0x3c,
229 [BQ27XXX_REG_AP] = 0x24,
230 BQ27XXX_DM_REG_ROWS,
231 },
232 #define bq27510g1_regs bq27500_regs
233 #define bq27510g2_regs bq27500_regs
234 bq27510g3_regs[BQ27XXX_REG_MAX] = {
235 [BQ27XXX_REG_CTRL] = 0x00,
236 [BQ27XXX_REG_TEMP] = 0x06,
237 [BQ27XXX_REG_INT_TEMP] = 0x28,
238 [BQ27XXX_REG_VOLT] = 0x08,
239 [BQ27XXX_REG_AI] = 0x14,
240 [BQ27XXX_REG_FLAGS] = 0x0a,
241 [BQ27XXX_REG_TTE] = 0x16,
242 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
243 [BQ27XXX_REG_TTES] = 0x1a,
244 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
245 [BQ27XXX_REG_NAC] = 0x0c,
246 [BQ27XXX_REG_RC] = 0x10,
247 [BQ27XXX_REG_FCC] = 0x12,
248 [BQ27XXX_REG_CYCT] = 0x1e,
249 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
250 [BQ27XXX_REG_SOC] = 0x20,
251 [BQ27XXX_REG_DCAP] = 0x2e,
252 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
253 BQ27XXX_DM_REG_ROWS,
254 },
255 bq27520g1_regs[BQ27XXX_REG_MAX] = {
256 [BQ27XXX_REG_CTRL] = 0x00,
257 [BQ27XXX_REG_TEMP] = 0x06,
258 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
259 [BQ27XXX_REG_VOLT] = 0x08,
260 [BQ27XXX_REG_AI] = 0x14,
261 [BQ27XXX_REG_FLAGS] = 0x0a,
262 [BQ27XXX_REG_TTE] = 0x16,
263 [BQ27XXX_REG_TTF] = 0x18,
264 [BQ27XXX_REG_TTES] = 0x1c,
265 [BQ27XXX_REG_TTECP] = 0x26,
266 [BQ27XXX_REG_NAC] = 0x0c,
267 [BQ27XXX_REG_RC] = 0x10,
268 [BQ27XXX_REG_FCC] = 0x12,
269 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
270 [BQ27XXX_REG_AE] = 0x22,
271 [BQ27XXX_REG_SOC] = 0x2c,
272 [BQ27XXX_REG_DCAP] = 0x3c,
273 [BQ27XXX_REG_AP] = 0x24,
274 BQ27XXX_DM_REG_ROWS,
275 },
276 bq27520g2_regs[BQ27XXX_REG_MAX] = {
277 [BQ27XXX_REG_CTRL] = 0x00,
278 [BQ27XXX_REG_TEMP] = 0x06,
279 [BQ27XXX_REG_INT_TEMP] = 0x36,
280 [BQ27XXX_REG_VOLT] = 0x08,
281 [BQ27XXX_REG_AI] = 0x14,
282 [BQ27XXX_REG_FLAGS] = 0x0a,
283 [BQ27XXX_REG_TTE] = 0x16,
284 [BQ27XXX_REG_TTF] = 0x18,
285 [BQ27XXX_REG_TTES] = 0x1c,
286 [BQ27XXX_REG_TTECP] = 0x26,
287 [BQ27XXX_REG_NAC] = 0x0c,
288 [BQ27XXX_REG_RC] = 0x10,
289 [BQ27XXX_REG_FCC] = 0x12,
290 [BQ27XXX_REG_CYCT] = 0x2a,
291 [BQ27XXX_REG_AE] = 0x22,
292 [BQ27XXX_REG_SOC] = 0x2c,
293 [BQ27XXX_REG_DCAP] = 0x3c,
294 [BQ27XXX_REG_AP] = 0x24,
295 BQ27XXX_DM_REG_ROWS,
296 },
297 bq27520g3_regs[BQ27XXX_REG_MAX] = {
298 [BQ27XXX_REG_CTRL] = 0x00,
299 [BQ27XXX_REG_TEMP] = 0x06,
300 [BQ27XXX_REG_INT_TEMP] = 0x36,
301 [BQ27XXX_REG_VOLT] = 0x08,
302 [BQ27XXX_REG_AI] = 0x14,
303 [BQ27XXX_REG_FLAGS] = 0x0a,
304 [BQ27XXX_REG_TTE] = 0x16,
305 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
306 [BQ27XXX_REG_TTES] = 0x1c,
307 [BQ27XXX_REG_TTECP] = 0x26,
308 [BQ27XXX_REG_NAC] = 0x0c,
309 [BQ27XXX_REG_RC] = 0x10,
310 [BQ27XXX_REG_FCC] = 0x12,
311 [BQ27XXX_REG_CYCT] = 0x2a,
312 [BQ27XXX_REG_AE] = 0x22,
313 [BQ27XXX_REG_SOC] = 0x2c,
314 [BQ27XXX_REG_DCAP] = 0x3c,
315 [BQ27XXX_REG_AP] = 0x24,
316 BQ27XXX_DM_REG_ROWS,
317 },
318 bq27520g4_regs[BQ27XXX_REG_MAX] = {
319 [BQ27XXX_REG_CTRL] = 0x00,
320 [BQ27XXX_REG_TEMP] = 0x06,
321 [BQ27XXX_REG_INT_TEMP] = 0x28,
322 [BQ27XXX_REG_VOLT] = 0x08,
323 [BQ27XXX_REG_AI] = 0x14,
324 [BQ27XXX_REG_FLAGS] = 0x0a,
325 [BQ27XXX_REG_TTE] = 0x16,
326 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
327 [BQ27XXX_REG_TTES] = 0x1c,
328 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
329 [BQ27XXX_REG_NAC] = 0x0c,
330 [BQ27XXX_REG_RC] = 0x10,
331 [BQ27XXX_REG_FCC] = 0x12,
332 [BQ27XXX_REG_CYCT] = 0x1e,
333 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
334 [BQ27XXX_REG_SOC] = 0x20,
335 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
336 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
337 BQ27XXX_DM_REG_ROWS,
338 },
339 bq27521_regs[BQ27XXX_REG_MAX] = {
340 [BQ27XXX_REG_CTRL] = 0x02,
341 [BQ27XXX_REG_TEMP] = 0x0a,
342 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
343 [BQ27XXX_REG_VOLT] = 0x0c,
344 [BQ27XXX_REG_AI] = 0x0e,
345 [BQ27XXX_REG_FLAGS] = 0x08,
346 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR,
347 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
348 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
349 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
350 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
351 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
352 [BQ27XXX_REG_FCC] = INVALID_REG_ADDR,
353 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
354 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
355 [BQ27XXX_REG_SOC] = INVALID_REG_ADDR,
356 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
357 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
358 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
359 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
360 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
361 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
362 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
363 },
364 bq27530_regs[BQ27XXX_REG_MAX] = {
365 [BQ27XXX_REG_CTRL] = 0x00,
366 [BQ27XXX_REG_TEMP] = 0x06,
367 [BQ27XXX_REG_INT_TEMP] = 0x32,
368 [BQ27XXX_REG_VOLT] = 0x08,
369 [BQ27XXX_REG_AI] = 0x14,
370 [BQ27XXX_REG_FLAGS] = 0x0a,
371 [BQ27XXX_REG_TTE] = 0x16,
372 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
373 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
374 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
375 [BQ27XXX_REG_NAC] = 0x0c,
376 [BQ27XXX_REG_RC] = 0x10,
377 [BQ27XXX_REG_FCC] = 0x12,
378 [BQ27XXX_REG_CYCT] = 0x2a,
379 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
380 [BQ27XXX_REG_SOC] = 0x2c,
381 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
382 [BQ27XXX_REG_AP] = 0x24,
383 BQ27XXX_DM_REG_ROWS,
384 },
385 #define bq27531_regs bq27530_regs
386 bq27541_regs[BQ27XXX_REG_MAX] = {
387 [BQ27XXX_REG_CTRL] = 0x00,
388 [BQ27XXX_REG_TEMP] = 0x06,
389 [BQ27XXX_REG_INT_TEMP] = 0x28,
390 [BQ27XXX_REG_VOLT] = 0x08,
391 [BQ27XXX_REG_AI] = 0x14,
392 [BQ27XXX_REG_FLAGS] = 0x0a,
393 [BQ27XXX_REG_TTE] = 0x16,
394 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
395 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
396 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
397 [BQ27XXX_REG_NAC] = 0x0c,
398 [BQ27XXX_REG_RC] = 0x10,
399 [BQ27XXX_REG_FCC] = 0x12,
400 [BQ27XXX_REG_CYCT] = 0x2a,
401 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
402 [BQ27XXX_REG_SOC] = 0x2c,
403 [BQ27XXX_REG_DCAP] = 0x3c,
404 [BQ27XXX_REG_AP] = 0x24,
405 BQ27XXX_DM_REG_ROWS,
406 },
407 #define bq27542_regs bq27541_regs
408 #define bq27546_regs bq27541_regs
409 #define bq27742_regs bq27541_regs
410 bq27545_regs[BQ27XXX_REG_MAX] = {
411 [BQ27XXX_REG_CTRL] = 0x00,
412 [BQ27XXX_REG_TEMP] = 0x06,
413 [BQ27XXX_REG_INT_TEMP] = 0x28,
414 [BQ27XXX_REG_VOLT] = 0x08,
415 [BQ27XXX_REG_AI] = 0x14,
416 [BQ27XXX_REG_FLAGS] = 0x0a,
417 [BQ27XXX_REG_TTE] = 0x16,
418 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
419 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
420 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
421 [BQ27XXX_REG_NAC] = 0x0c,
422 [BQ27XXX_REG_RC] = 0x10,
423 [BQ27XXX_REG_FCC] = 0x12,
424 [BQ27XXX_REG_CYCT] = 0x2a,
425 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
426 [BQ27XXX_REG_SOC] = 0x2c,
427 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
428 [BQ27XXX_REG_AP] = 0x24,
429 BQ27XXX_DM_REG_ROWS,
430 },
431 bq27421_regs[BQ27XXX_REG_MAX] = {
432 [BQ27XXX_REG_CTRL] = 0x00,
433 [BQ27XXX_REG_TEMP] = 0x02,
434 [BQ27XXX_REG_INT_TEMP] = 0x1e,
435 [BQ27XXX_REG_VOLT] = 0x04,
436 [BQ27XXX_REG_AI] = 0x10,
437 [BQ27XXX_REG_FLAGS] = 0x06,
438 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR,
439 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
440 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
441 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
442 [BQ27XXX_REG_NAC] = 0x08,
443 [BQ27XXX_REG_RC] = 0x0c,
444 [BQ27XXX_REG_FCC] = 0x0e,
445 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
446 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
447 [BQ27XXX_REG_SOC] = 0x1c,
448 [BQ27XXX_REG_DCAP] = 0x3c,
449 [BQ27XXX_REG_AP] = 0x18,
450 BQ27XXX_DM_REG_ROWS,
451 },
452 #define bq27411_regs bq27421_regs
453 #define bq27425_regs bq27421_regs
454 #define bq27426_regs bq27421_regs
455 #define bq27441_regs bq27421_regs
456 #define bq27621_regs bq27421_regs
457 bq27z561_regs[BQ27XXX_REG_MAX] = {
458 [BQ27XXX_REG_CTRL] = 0x00,
459 [BQ27XXX_REG_TEMP] = 0x06,
460 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
461 [BQ27XXX_REG_VOLT] = 0x08,
462 [BQ27XXX_REG_AI] = 0x14,
463 [BQ27XXX_REG_FLAGS] = 0x0a,
464 [BQ27XXX_REG_TTE] = 0x16,
465 [BQ27XXX_REG_TTF] = 0x18,
466 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
467 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
468 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
469 [BQ27XXX_REG_RC] = 0x10,
470 [BQ27XXX_REG_FCC] = 0x12,
471 [BQ27XXX_REG_CYCT] = 0x2a,
472 [BQ27XXX_REG_AE] = 0x22,
473 [BQ27XXX_REG_SOC] = 0x2c,
474 [BQ27XXX_REG_DCAP] = 0x3c,
475 [BQ27XXX_REG_AP] = 0x22,
476 BQ27XXX_DM_REG_ROWS,
477 },
478 bq28z610_regs[BQ27XXX_REG_MAX] = {
479 [BQ27XXX_REG_CTRL] = 0x00,
480 [BQ27XXX_REG_TEMP] = 0x06,
481 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
482 [BQ27XXX_REG_VOLT] = 0x08,
483 [BQ27XXX_REG_AI] = 0x14,
484 [BQ27XXX_REG_FLAGS] = 0x0a,
485 [BQ27XXX_REG_TTE] = 0x16,
486 [BQ27XXX_REG_TTF] = 0x18,
487 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
488 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
489 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
490 [BQ27XXX_REG_RC] = 0x10,
491 [BQ27XXX_REG_FCC] = 0x12,
492 [BQ27XXX_REG_CYCT] = 0x2a,
493 [BQ27XXX_REG_AE] = 0x22,
494 [BQ27XXX_REG_SOC] = 0x2c,
495 [BQ27XXX_REG_DCAP] = 0x3c,
496 [BQ27XXX_REG_AP] = 0x22,
497 BQ27XXX_DM_REG_ROWS,
498 },
499 bq34z100_regs[BQ27XXX_REG_MAX] = {
500 [BQ27XXX_REG_CTRL] = 0x00,
501 [BQ27XXX_REG_TEMP] = 0x0c,
502 [BQ27XXX_REG_INT_TEMP] = 0x2a,
503 [BQ27XXX_REG_VOLT] = 0x08,
504 [BQ27XXX_REG_AI] = 0x0a,
505 [BQ27XXX_REG_FLAGS] = 0x0e,
506 [BQ27XXX_REG_TTE] = 0x18,
507 [BQ27XXX_REG_TTF] = 0x1a,
508 [BQ27XXX_REG_TTES] = 0x1e,
509 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
510 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
511 [BQ27XXX_REG_RC] = 0x04,
512 [BQ27XXX_REG_FCC] = 0x06,
513 [BQ27XXX_REG_CYCT] = 0x2c,
514 [BQ27XXX_REG_AE] = 0x24,
515 [BQ27XXX_REG_SOC] = 0x02,
516 [BQ27XXX_REG_DCAP] = 0x3c,
517 [BQ27XXX_REG_AP] = 0x22,
518 BQ27XXX_DM_REG_ROWS,
519 },
520 bq78z100_regs[BQ27XXX_REG_MAX] = {
521 [BQ27XXX_REG_CTRL] = 0x00,
522 [BQ27XXX_REG_TEMP] = 0x06,
523 [BQ27XXX_REG_INT_TEMP] = 0x28,
524 [BQ27XXX_REG_VOLT] = 0x08,
525 [BQ27XXX_REG_AI] = 0x14,
526 [BQ27XXX_REG_FLAGS] = 0x0a,
527 [BQ27XXX_REG_TTE] = 0x16,
528 [BQ27XXX_REG_TTF] = 0x18,
529 [BQ27XXX_REG_TTES] = 0x1c,
530 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
531 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
532 [BQ27XXX_REG_RC] = 0x10,
533 [BQ27XXX_REG_FCC] = 0x12,
534 [BQ27XXX_REG_CYCT] = 0x2a,
535 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
536 [BQ27XXX_REG_SOC] = 0x2c,
537 [BQ27XXX_REG_DCAP] = 0x3c,
538 [BQ27XXX_REG_AP] = 0x22,
539 BQ27XXX_DM_REG_ROWS,
540 };
541
542 static enum power_supply_property bq27000_props[] = {
543 POWER_SUPPLY_PROP_STATUS,
544 POWER_SUPPLY_PROP_PRESENT,
545 POWER_SUPPLY_PROP_VOLTAGE_NOW,
546 POWER_SUPPLY_PROP_CURRENT_NOW,
547 POWER_SUPPLY_PROP_CAPACITY,
548 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
549 POWER_SUPPLY_PROP_TEMP,
550 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
551 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
552 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
553 POWER_SUPPLY_PROP_TECHNOLOGY,
554 POWER_SUPPLY_PROP_CHARGE_FULL,
555 POWER_SUPPLY_PROP_CHARGE_NOW,
556 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
557 POWER_SUPPLY_PROP_CYCLE_COUNT,
558 POWER_SUPPLY_PROP_ENERGY_NOW,
559 POWER_SUPPLY_PROP_POWER_AVG,
560 POWER_SUPPLY_PROP_HEALTH,
561 POWER_SUPPLY_PROP_MANUFACTURER,
562 };
563
564 static enum power_supply_property bq27010_props[] = {
565 POWER_SUPPLY_PROP_STATUS,
566 POWER_SUPPLY_PROP_PRESENT,
567 POWER_SUPPLY_PROP_VOLTAGE_NOW,
568 POWER_SUPPLY_PROP_CURRENT_NOW,
569 POWER_SUPPLY_PROP_CAPACITY,
570 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
571 POWER_SUPPLY_PROP_TEMP,
572 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
573 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
574 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
575 POWER_SUPPLY_PROP_TECHNOLOGY,
576 POWER_SUPPLY_PROP_CHARGE_FULL,
577 POWER_SUPPLY_PROP_CHARGE_NOW,
578 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
579 POWER_SUPPLY_PROP_CYCLE_COUNT,
580 POWER_SUPPLY_PROP_HEALTH,
581 POWER_SUPPLY_PROP_MANUFACTURER,
582 };
583
584 #define bq2750x_props bq27510g3_props
585 #define bq2751x_props bq27510g3_props
586 #define bq2752x_props bq27510g3_props
587
588 static enum power_supply_property bq27500_props[] = {
589 POWER_SUPPLY_PROP_STATUS,
590 POWER_SUPPLY_PROP_PRESENT,
591 POWER_SUPPLY_PROP_VOLTAGE_NOW,
592 POWER_SUPPLY_PROP_CURRENT_NOW,
593 POWER_SUPPLY_PROP_CAPACITY,
594 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
595 POWER_SUPPLY_PROP_TEMP,
596 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
597 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
598 POWER_SUPPLY_PROP_TECHNOLOGY,
599 POWER_SUPPLY_PROP_CHARGE_FULL,
600 POWER_SUPPLY_PROP_CHARGE_NOW,
601 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
602 POWER_SUPPLY_PROP_CYCLE_COUNT,
603 POWER_SUPPLY_PROP_ENERGY_NOW,
604 POWER_SUPPLY_PROP_POWER_AVG,
605 POWER_SUPPLY_PROP_HEALTH,
606 POWER_SUPPLY_PROP_MANUFACTURER,
607 };
608 #define bq27510g1_props bq27500_props
609 #define bq27510g2_props bq27500_props
610
611 static enum power_supply_property bq27510g3_props[] = {
612 POWER_SUPPLY_PROP_STATUS,
613 POWER_SUPPLY_PROP_PRESENT,
614 POWER_SUPPLY_PROP_VOLTAGE_NOW,
615 POWER_SUPPLY_PROP_CURRENT_NOW,
616 POWER_SUPPLY_PROP_CAPACITY,
617 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
618 POWER_SUPPLY_PROP_TEMP,
619 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
620 POWER_SUPPLY_PROP_TECHNOLOGY,
621 POWER_SUPPLY_PROP_CHARGE_FULL,
622 POWER_SUPPLY_PROP_CHARGE_NOW,
623 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
624 POWER_SUPPLY_PROP_CYCLE_COUNT,
625 POWER_SUPPLY_PROP_HEALTH,
626 POWER_SUPPLY_PROP_MANUFACTURER,
627 };
628
629 static enum power_supply_property bq27520g1_props[] = {
630 POWER_SUPPLY_PROP_STATUS,
631 POWER_SUPPLY_PROP_PRESENT,
632 POWER_SUPPLY_PROP_VOLTAGE_NOW,
633 POWER_SUPPLY_PROP_CURRENT_NOW,
634 POWER_SUPPLY_PROP_CAPACITY,
635 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
636 POWER_SUPPLY_PROP_TEMP,
637 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
638 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
639 POWER_SUPPLY_PROP_TECHNOLOGY,
640 POWER_SUPPLY_PROP_CHARGE_FULL,
641 POWER_SUPPLY_PROP_CHARGE_NOW,
642 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
643 POWER_SUPPLY_PROP_ENERGY_NOW,
644 POWER_SUPPLY_PROP_POWER_AVG,
645 POWER_SUPPLY_PROP_HEALTH,
646 POWER_SUPPLY_PROP_MANUFACTURER,
647 };
648
649 #define bq27520g2_props bq27500_props
650
651 static enum power_supply_property bq27520g3_props[] = {
652 POWER_SUPPLY_PROP_STATUS,
653 POWER_SUPPLY_PROP_PRESENT,
654 POWER_SUPPLY_PROP_VOLTAGE_NOW,
655 POWER_SUPPLY_PROP_CURRENT_NOW,
656 POWER_SUPPLY_PROP_CAPACITY,
657 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
658 POWER_SUPPLY_PROP_TEMP,
659 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
660 POWER_SUPPLY_PROP_TECHNOLOGY,
661 POWER_SUPPLY_PROP_CHARGE_FULL,
662 POWER_SUPPLY_PROP_CHARGE_NOW,
663 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
664 POWER_SUPPLY_PROP_CYCLE_COUNT,
665 POWER_SUPPLY_PROP_ENERGY_NOW,
666 POWER_SUPPLY_PROP_POWER_AVG,
667 POWER_SUPPLY_PROP_HEALTH,
668 POWER_SUPPLY_PROP_MANUFACTURER,
669 };
670
671 static enum power_supply_property bq27520g4_props[] = {
672 POWER_SUPPLY_PROP_STATUS,
673 POWER_SUPPLY_PROP_PRESENT,
674 POWER_SUPPLY_PROP_VOLTAGE_NOW,
675 POWER_SUPPLY_PROP_CURRENT_NOW,
676 POWER_SUPPLY_PROP_CAPACITY,
677 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
678 POWER_SUPPLY_PROP_TEMP,
679 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
680 POWER_SUPPLY_PROP_TECHNOLOGY,
681 POWER_SUPPLY_PROP_CHARGE_FULL,
682 POWER_SUPPLY_PROP_CHARGE_NOW,
683 POWER_SUPPLY_PROP_CYCLE_COUNT,
684 POWER_SUPPLY_PROP_HEALTH,
685 POWER_SUPPLY_PROP_MANUFACTURER,
686 };
687
688 static enum power_supply_property bq27521_props[] = {
689 POWER_SUPPLY_PROP_STATUS,
690 POWER_SUPPLY_PROP_PRESENT,
691 POWER_SUPPLY_PROP_VOLTAGE_NOW,
692 POWER_SUPPLY_PROP_CURRENT_NOW,
693 POWER_SUPPLY_PROP_TEMP,
694 POWER_SUPPLY_PROP_TECHNOLOGY,
695 };
696
697 static enum power_supply_property bq27530_props[] = {
698 POWER_SUPPLY_PROP_STATUS,
699 POWER_SUPPLY_PROP_PRESENT,
700 POWER_SUPPLY_PROP_VOLTAGE_NOW,
701 POWER_SUPPLY_PROP_CURRENT_NOW,
702 POWER_SUPPLY_PROP_CAPACITY,
703 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
704 POWER_SUPPLY_PROP_TEMP,
705 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
706 POWER_SUPPLY_PROP_TECHNOLOGY,
707 POWER_SUPPLY_PROP_CHARGE_FULL,
708 POWER_SUPPLY_PROP_CHARGE_NOW,
709 POWER_SUPPLY_PROP_POWER_AVG,
710 POWER_SUPPLY_PROP_HEALTH,
711 POWER_SUPPLY_PROP_CYCLE_COUNT,
712 POWER_SUPPLY_PROP_MANUFACTURER,
713 };
714 #define bq27531_props bq27530_props
715
716 static enum power_supply_property bq27541_props[] = {
717 POWER_SUPPLY_PROP_STATUS,
718 POWER_SUPPLY_PROP_PRESENT,
719 POWER_SUPPLY_PROP_VOLTAGE_NOW,
720 POWER_SUPPLY_PROP_CURRENT_NOW,
721 POWER_SUPPLY_PROP_CAPACITY,
722 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
723 POWER_SUPPLY_PROP_TEMP,
724 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
725 POWER_SUPPLY_PROP_TECHNOLOGY,
726 POWER_SUPPLY_PROP_CHARGE_FULL,
727 POWER_SUPPLY_PROP_CHARGE_NOW,
728 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
729 POWER_SUPPLY_PROP_CYCLE_COUNT,
730 POWER_SUPPLY_PROP_POWER_AVG,
731 POWER_SUPPLY_PROP_HEALTH,
732 POWER_SUPPLY_PROP_MANUFACTURER,
733 };
734 #define bq27542_props bq27541_props
735 #define bq27546_props bq27541_props
736 #define bq27742_props bq27541_props
737
738 static enum power_supply_property bq27545_props[] = {
739 POWER_SUPPLY_PROP_STATUS,
740 POWER_SUPPLY_PROP_PRESENT,
741 POWER_SUPPLY_PROP_VOLTAGE_NOW,
742 POWER_SUPPLY_PROP_CURRENT_NOW,
743 POWER_SUPPLY_PROP_CAPACITY,
744 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
745 POWER_SUPPLY_PROP_TEMP,
746 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
747 POWER_SUPPLY_PROP_TECHNOLOGY,
748 POWER_SUPPLY_PROP_CHARGE_FULL,
749 POWER_SUPPLY_PROP_CHARGE_NOW,
750 POWER_SUPPLY_PROP_HEALTH,
751 POWER_SUPPLY_PROP_CYCLE_COUNT,
752 POWER_SUPPLY_PROP_POWER_AVG,
753 POWER_SUPPLY_PROP_MANUFACTURER,
754 };
755
756 static enum power_supply_property bq27421_props[] = {
757 POWER_SUPPLY_PROP_STATUS,
758 POWER_SUPPLY_PROP_PRESENT,
759 POWER_SUPPLY_PROP_VOLTAGE_NOW,
760 POWER_SUPPLY_PROP_CURRENT_NOW,
761 POWER_SUPPLY_PROP_CAPACITY,
762 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
763 POWER_SUPPLY_PROP_TEMP,
764 POWER_SUPPLY_PROP_TECHNOLOGY,
765 POWER_SUPPLY_PROP_CHARGE_FULL,
766 POWER_SUPPLY_PROP_CHARGE_NOW,
767 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
768 POWER_SUPPLY_PROP_MANUFACTURER,
769 };
770 #define bq27411_props bq27421_props
771 #define bq27425_props bq27421_props
772 #define bq27426_props bq27421_props
773 #define bq27441_props bq27421_props
774 #define bq27621_props bq27421_props
775
776 static enum power_supply_property bq27z561_props[] = {
777 POWER_SUPPLY_PROP_STATUS,
778 POWER_SUPPLY_PROP_PRESENT,
779 POWER_SUPPLY_PROP_VOLTAGE_NOW,
780 POWER_SUPPLY_PROP_CURRENT_NOW,
781 POWER_SUPPLY_PROP_CAPACITY,
782 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
783 POWER_SUPPLY_PROP_TEMP,
784 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
785 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
786 POWER_SUPPLY_PROP_TECHNOLOGY,
787 POWER_SUPPLY_PROP_CHARGE_FULL,
788 POWER_SUPPLY_PROP_CHARGE_NOW,
789 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
790 POWER_SUPPLY_PROP_CYCLE_COUNT,
791 POWER_SUPPLY_PROP_POWER_AVG,
792 POWER_SUPPLY_PROP_HEALTH,
793 POWER_SUPPLY_PROP_MANUFACTURER,
794 };
795
796 static enum power_supply_property bq28z610_props[] = {
797 POWER_SUPPLY_PROP_STATUS,
798 POWER_SUPPLY_PROP_PRESENT,
799 POWER_SUPPLY_PROP_VOLTAGE_NOW,
800 POWER_SUPPLY_PROP_CURRENT_NOW,
801 POWER_SUPPLY_PROP_CAPACITY,
802 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
803 POWER_SUPPLY_PROP_TEMP,
804 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
805 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
806 POWER_SUPPLY_PROP_TECHNOLOGY,
807 POWER_SUPPLY_PROP_CHARGE_FULL,
808 POWER_SUPPLY_PROP_CHARGE_NOW,
809 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
810 POWER_SUPPLY_PROP_CYCLE_COUNT,
811 POWER_SUPPLY_PROP_POWER_AVG,
812 POWER_SUPPLY_PROP_HEALTH,
813 POWER_SUPPLY_PROP_MANUFACTURER,
814 };
815
816 static enum power_supply_property bq34z100_props[] = {
817 POWER_SUPPLY_PROP_STATUS,
818 POWER_SUPPLY_PROP_PRESENT,
819 POWER_SUPPLY_PROP_VOLTAGE_NOW,
820 POWER_SUPPLY_PROP_CURRENT_NOW,
821 POWER_SUPPLY_PROP_CAPACITY,
822 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
823 POWER_SUPPLY_PROP_TEMP,
824 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
825 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
826 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
827 POWER_SUPPLY_PROP_TECHNOLOGY,
828 POWER_SUPPLY_PROP_CHARGE_FULL,
829 POWER_SUPPLY_PROP_CHARGE_NOW,
830 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
831 POWER_SUPPLY_PROP_CYCLE_COUNT,
832 POWER_SUPPLY_PROP_ENERGY_NOW,
833 POWER_SUPPLY_PROP_POWER_AVG,
834 POWER_SUPPLY_PROP_HEALTH,
835 POWER_SUPPLY_PROP_MANUFACTURER,
836 };
837
838 static enum power_supply_property bq78z100_props[] = {
839 POWER_SUPPLY_PROP_STATUS,
840 POWER_SUPPLY_PROP_PRESENT,
841 POWER_SUPPLY_PROP_VOLTAGE_NOW,
842 POWER_SUPPLY_PROP_CURRENT_NOW,
843 POWER_SUPPLY_PROP_CAPACITY,
844 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
845 POWER_SUPPLY_PROP_TEMP,
846 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
847 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
848 POWER_SUPPLY_PROP_TECHNOLOGY,
849 POWER_SUPPLY_PROP_CHARGE_FULL,
850 POWER_SUPPLY_PROP_CHARGE_NOW,
851 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
852 POWER_SUPPLY_PROP_CYCLE_COUNT,
853 POWER_SUPPLY_PROP_POWER_AVG,
854 POWER_SUPPLY_PROP_HEALTH,
855 POWER_SUPPLY_PROP_MANUFACTURER,
856 };
857
858 struct bq27xxx_dm_reg {
859 u8 subclass_id;
860 u8 offset;
861 u8 bytes;
862 u16 min, max;
863 };
864
865 enum bq27xxx_dm_reg_id {
866 BQ27XXX_DM_DESIGN_CAPACITY = 0,
867 BQ27XXX_DM_DESIGN_ENERGY,
868 BQ27XXX_DM_TERMINATE_VOLTAGE,
869 };
870
871 #define bq27000_dm_regs 0
872 #define bq27010_dm_regs 0
873 #define bq2750x_dm_regs 0
874 #define bq2751x_dm_regs 0
875 #define bq2752x_dm_regs 0
876
877 #if 0 /* not yet tested */
878 static struct bq27xxx_dm_reg bq27500_dm_regs[] = {
879 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 10, 2, 0, 65535 },
880 [BQ27XXX_DM_DESIGN_ENERGY] = { }, /* missing on chip */
881 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 },
882 };
883 #else
884 #define bq27500_dm_regs 0
885 #endif
886
887 /* todo create data memory definitions from datasheets and test on chips */
888 #define bq27510g1_dm_regs 0
889 #define bq27510g2_dm_regs 0
890 #define bq27510g3_dm_regs 0
891 #define bq27520g1_dm_regs 0
892 #define bq27520g2_dm_regs 0
893 #define bq27520g3_dm_regs 0
894 #define bq27520g4_dm_regs 0
895 #define bq27521_dm_regs 0
896 #define bq27530_dm_regs 0
897 #define bq27531_dm_regs 0
898 #define bq27541_dm_regs 0
899 #define bq27542_dm_regs 0
900 #define bq27546_dm_regs 0
901 #define bq27742_dm_regs 0
902
903 #if 0 /* not yet tested */
904 static struct bq27xxx_dm_reg bq27545_dm_regs[] = {
905 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 23, 2, 0, 32767 },
906 [BQ27XXX_DM_DESIGN_ENERGY] = { 48, 25, 2, 0, 32767 },
907 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 },
908 };
909 #else
910 #define bq27545_dm_regs 0
911 #endif
912
913 static struct bq27xxx_dm_reg bq27411_dm_regs[] = {
914 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 32767 },
915 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 },
916 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800, 3700 },
917 };
918
919 static struct bq27xxx_dm_reg bq27421_dm_regs[] = {
920 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 8000 },
921 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 },
922 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500, 3700 },
923 };
924
925 static struct bq27xxx_dm_reg bq27425_dm_regs[] = {
926 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 12, 2, 0, 32767 },
927 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 14, 2, 0, 32767 },
928 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 18, 2, 2800, 3700 },
929 };
930
931 static struct bq27xxx_dm_reg bq27426_dm_regs[] = {
932 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 6, 2, 0, 8000 },
933 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 8, 2, 0, 32767 },
934 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 10, 2, 2500, 3700 },
935 };
936
937 #if 0 /* not yet tested */
938 #define bq27441_dm_regs bq27421_dm_regs
939 #else
940 #define bq27441_dm_regs 0
941 #endif
942
943 #if 0 /* not yet tested */
944 static struct bq27xxx_dm_reg bq27621_dm_regs[] = {
945 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 3, 2, 0, 8000 },
946 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 5, 2, 0, 32767 },
947 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 },
948 };
949 #else
950 #define bq27621_dm_regs 0
951 #endif
952
953 #define bq27z561_dm_regs 0
954 #define bq28z610_dm_regs 0
955 #define bq34z100_dm_regs 0
956 #define bq78z100_dm_regs 0
957
958 #define BQ27XXX_O_ZERO BIT(0)
959 #define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */
960 #define BQ27XXX_O_UTOT BIT(2) /* has OT overtemperature flag */
961 #define BQ27XXX_O_CFGUP BIT(3)
962 #define BQ27XXX_O_RAM BIT(4)
963 #define BQ27Z561_O_BITS BIT(5)
964 #define BQ27XXX_O_SOC_SI BIT(6) /* SoC is single register */
965 #define BQ27XXX_O_HAS_CI BIT(7) /* has Capacity Inaccurate flag */
966 #define BQ27XXX_O_MUL_CHEM BIT(8) /* multiple chemistries supported */
967
968 #define BQ27XXX_DATA(ref, key, opt) { \
969 .opts = (opt), \
970 .unseal_key = key, \
971 .regs = ref##_regs, \
972 .dm_regs = ref##_dm_regs, \
973 .props = ref##_props, \
974 .props_size = ARRAY_SIZE(ref##_props) }
975
976 static struct {
977 u32 opts;
978 u32 unseal_key;
979 u8 *regs;
980 struct bq27xxx_dm_reg *dm_regs;
981 enum power_supply_property *props;
982 size_t props_size;
983 } bq27xxx_chip_data[] = {
984 [BQ27000] = BQ27XXX_DATA(bq27000, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI),
985 [BQ27010] = BQ27XXX_DATA(bq27010, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI),
986 [BQ2750X] = BQ27XXX_DATA(bq2750x, 0 , BQ27XXX_O_OTDC),
987 [BQ2751X] = BQ27XXX_DATA(bq2751x, 0 , BQ27XXX_O_OTDC),
988 [BQ2752X] = BQ27XXX_DATA(bq2752x, 0 , BQ27XXX_O_OTDC),
989 [BQ27500] = BQ27XXX_DATA(bq27500, 0x04143672, BQ27XXX_O_OTDC),
990 [BQ27510G1] = BQ27XXX_DATA(bq27510g1, 0 , BQ27XXX_O_OTDC),
991 [BQ27510G2] = BQ27XXX_DATA(bq27510g2, 0 , BQ27XXX_O_OTDC),
992 [BQ27510G3] = BQ27XXX_DATA(bq27510g3, 0 , BQ27XXX_O_OTDC),
993 [BQ27520G1] = BQ27XXX_DATA(bq27520g1, 0 , BQ27XXX_O_OTDC),
994 [BQ27520G2] = BQ27XXX_DATA(bq27520g2, 0 , BQ27XXX_O_OTDC),
995 [BQ27520G3] = BQ27XXX_DATA(bq27520g3, 0 , BQ27XXX_O_OTDC),
996 [BQ27520G4] = BQ27XXX_DATA(bq27520g4, 0 , BQ27XXX_O_OTDC),
997 [BQ27521] = BQ27XXX_DATA(bq27521, 0 , 0),
998 [BQ27530] = BQ27XXX_DATA(bq27530, 0 , BQ27XXX_O_UTOT),
999 [BQ27531] = BQ27XXX_DATA(bq27531, 0 , BQ27XXX_O_UTOT),
1000 [BQ27541] = BQ27XXX_DATA(bq27541, 0 , BQ27XXX_O_OTDC),
1001 [BQ27542] = BQ27XXX_DATA(bq27542, 0 , BQ27XXX_O_OTDC),
1002 [BQ27546] = BQ27XXX_DATA(bq27546, 0 , BQ27XXX_O_OTDC),
1003 [BQ27742] = BQ27XXX_DATA(bq27742, 0 , BQ27XXX_O_OTDC),
1004 [BQ27545] = BQ27XXX_DATA(bq27545, 0x04143672, BQ27XXX_O_OTDC),
1005 [BQ27411] = BQ27XXX_DATA(bq27411, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
1006 [BQ27421] = BQ27XXX_DATA(bq27421, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
1007 [BQ27425] = BQ27XXX_DATA(bq27425, 0x04143672, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP),
1008 [BQ27426] = BQ27XXX_DATA(bq27426, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
1009 [BQ27441] = BQ27XXX_DATA(bq27441, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
1010 [BQ27621] = BQ27XXX_DATA(bq27621, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
1011 [BQ27Z561] = BQ27XXX_DATA(bq27z561, 0 , BQ27Z561_O_BITS),
1012 [BQ28Z610] = BQ27XXX_DATA(bq28z610, 0 , BQ27Z561_O_BITS),
1013 [BQ34Z100] = BQ27XXX_DATA(bq34z100, 0 , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \
1014 BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM),
1015 [BQ78Z100] = BQ27XXX_DATA(bq78z100, 0 , BQ27Z561_O_BITS),
1016 };
1017
1018 static DEFINE_MUTEX(bq27xxx_list_lock);
1019 static LIST_HEAD(bq27xxx_battery_devices);
1020
1021 #define BQ27XXX_MSLEEP(i) usleep_range((i)*1000, (i)*1000+500)
1022
1023 #define BQ27XXX_DM_SZ 32
1024
1025 /**
1026 * struct bq27xxx_dm_buf - chip data memory buffer
1027 * @class: data memory subclass_id
1028 * @block: data memory block number
1029 * @data: data from/for the block
1030 * @has_data: true if data has been filled by read
1031 * @dirty: true if data has changed since last read/write
1032 *
1033 * Encapsulates info required to manage chip data memory blocks.
1034 */
1035 struct bq27xxx_dm_buf {
1036 u8 class;
1037 u8 block;
1038 u8 data[BQ27XXX_DM_SZ];
1039 bool has_data, dirty;
1040 };
1041
1042 #define BQ27XXX_DM_BUF(di, i) { \
1043 .class = (di)->dm_regs[i].subclass_id, \
1044 .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \
1045 }
1046
bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf * buf,struct bq27xxx_dm_reg * reg)1047 static inline u16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf,
1048 struct bq27xxx_dm_reg *reg)
1049 {
1050 if (buf->class == reg->subclass_id &&
1051 buf->block == reg->offset / BQ27XXX_DM_SZ)
1052 return (u16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ);
1053
1054 return NULL;
1055 }
1056
1057 static const char * const bq27xxx_dm_reg_name[] = {
1058 [BQ27XXX_DM_DESIGN_CAPACITY] = "design-capacity",
1059 [BQ27XXX_DM_DESIGN_ENERGY] = "design-energy",
1060 [BQ27XXX_DM_TERMINATE_VOLTAGE] = "terminate-voltage",
1061 };
1062
1063
1064 static bool bq27xxx_dt_to_nvm = true;
1065 module_param_named(dt_monitored_battery_updates_nvm, bq27xxx_dt_to_nvm, bool, 0444);
1066 MODULE_PARM_DESC(dt_monitored_battery_updates_nvm,
1067 "Devicetree monitored-battery config updates data memory on NVM/flash chips.\n"
1068 "Users must set this =0 when installing a different type of battery!\n"
1069 "Default is =1."
1070 #ifndef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1071 "\nSetting this affects future kernel updates, not the current configuration."
1072 #endif
1073 );
1074
poll_interval_param_set(const char * val,const struct kernel_param * kp)1075 static int poll_interval_param_set(const char *val, const struct kernel_param *kp)
1076 {
1077 struct bq27xxx_device_info *di;
1078 unsigned int prev_val = *(unsigned int *) kp->arg;
1079 int ret;
1080
1081 ret = param_set_uint(val, kp);
1082 if (ret < 0 || prev_val == *(unsigned int *) kp->arg)
1083 return ret;
1084
1085 mutex_lock(&bq27xxx_list_lock);
1086 list_for_each_entry(di, &bq27xxx_battery_devices, list) {
1087 cancel_delayed_work_sync(&di->work);
1088 schedule_delayed_work(&di->work, 0);
1089 }
1090 mutex_unlock(&bq27xxx_list_lock);
1091
1092 return ret;
1093 }
1094
1095 static const struct kernel_param_ops param_ops_poll_interval = {
1096 .get = param_get_uint,
1097 .set = poll_interval_param_set,
1098 };
1099
1100 static unsigned int poll_interval = 360;
1101 module_param_cb(poll_interval, ¶m_ops_poll_interval, &poll_interval, 0644);
1102 MODULE_PARM_DESC(poll_interval,
1103 "battery poll interval in seconds - 0 disables polling");
1104
1105 /*
1106 * Common code for BQ27xxx devices
1107 */
1108
bq27xxx_read(struct bq27xxx_device_info * di,int reg_index,bool single)1109 static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index,
1110 bool single)
1111 {
1112 int ret;
1113
1114 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1115 return -EINVAL;
1116
1117 ret = di->bus.read(di, di->regs[reg_index], single);
1118 if (ret < 0)
1119 dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n",
1120 di->regs[reg_index], reg_index);
1121
1122 return ret;
1123 }
1124
bq27xxx_write(struct bq27xxx_device_info * di,int reg_index,u16 value,bool single)1125 static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index,
1126 u16 value, bool single)
1127 {
1128 int ret;
1129
1130 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1131 return -EINVAL;
1132
1133 if (!di->bus.write)
1134 return -EPERM;
1135
1136 ret = di->bus.write(di, di->regs[reg_index], value, single);
1137 if (ret < 0)
1138 dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n",
1139 di->regs[reg_index], reg_index);
1140
1141 return ret;
1142 }
1143
bq27xxx_read_block(struct bq27xxx_device_info * di,int reg_index,u8 * data,int len)1144 static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index,
1145 u8 *data, int len)
1146 {
1147 int ret;
1148
1149 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1150 return -EINVAL;
1151
1152 if (!di->bus.read_bulk)
1153 return -EPERM;
1154
1155 ret = di->bus.read_bulk(di, di->regs[reg_index], data, len);
1156 if (ret < 0)
1157 dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n",
1158 di->regs[reg_index], reg_index);
1159
1160 return ret;
1161 }
1162
bq27xxx_write_block(struct bq27xxx_device_info * di,int reg_index,u8 * data,int len)1163 static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index,
1164 u8 *data, int len)
1165 {
1166 int ret;
1167
1168 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1169 return -EINVAL;
1170
1171 if (!di->bus.write_bulk)
1172 return -EPERM;
1173
1174 ret = di->bus.write_bulk(di, di->regs[reg_index], data, len);
1175 if (ret < 0)
1176 dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n",
1177 di->regs[reg_index], reg_index);
1178
1179 return ret;
1180 }
1181
bq27xxx_battery_seal(struct bq27xxx_device_info * di)1182 static int bq27xxx_battery_seal(struct bq27xxx_device_info *di)
1183 {
1184 int ret;
1185
1186 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_SEALED, false);
1187 if (ret < 0) {
1188 dev_err(di->dev, "bus error on seal: %d\n", ret);
1189 return ret;
1190 }
1191
1192 return 0;
1193 }
1194
bq27xxx_battery_unseal(struct bq27xxx_device_info * di)1195 static int bq27xxx_battery_unseal(struct bq27xxx_device_info *di)
1196 {
1197 int ret;
1198
1199 if (di->unseal_key == 0) {
1200 dev_err(di->dev, "unseal failed due to missing key\n");
1201 return -EINVAL;
1202 }
1203
1204 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)(di->unseal_key >> 16), false);
1205 if (ret < 0)
1206 goto out;
1207
1208 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)di->unseal_key, false);
1209 if (ret < 0)
1210 goto out;
1211
1212 return 0;
1213
1214 out:
1215 dev_err(di->dev, "bus error on unseal: %d\n", ret);
1216 return ret;
1217 }
1218
bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf * buf)1219 static u8 bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf *buf)
1220 {
1221 u16 sum = 0;
1222 int i;
1223
1224 for (i = 0; i < BQ27XXX_DM_SZ; i++)
1225 sum += buf->data[i];
1226 sum &= 0xff;
1227
1228 return 0xff - sum;
1229 }
1230
bq27xxx_battery_read_dm_block(struct bq27xxx_device_info * di,struct bq27xxx_dm_buf * buf)1231 static int bq27xxx_battery_read_dm_block(struct bq27xxx_device_info *di,
1232 struct bq27xxx_dm_buf *buf)
1233 {
1234 int ret;
1235
1236 buf->has_data = false;
1237
1238 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true);
1239 if (ret < 0)
1240 goto out;
1241
1242 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true);
1243 if (ret < 0)
1244 goto out;
1245
1246 BQ27XXX_MSLEEP(1);
1247
1248 ret = bq27xxx_read_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ);
1249 if (ret < 0)
1250 goto out;
1251
1252 ret = bq27xxx_read(di, BQ27XXX_DM_CKSUM, true);
1253 if (ret < 0)
1254 goto out;
1255
1256 if ((u8)ret != bq27xxx_battery_checksum_dm_block(buf)) {
1257 ret = -EINVAL;
1258 goto out;
1259 }
1260
1261 buf->has_data = true;
1262 buf->dirty = false;
1263
1264 return 0;
1265
1266 out:
1267 dev_err(di->dev, "bus error reading chip memory: %d\n", ret);
1268 return ret;
1269 }
1270
bq27xxx_battery_update_dm_block(struct bq27xxx_device_info * di,struct bq27xxx_dm_buf * buf,enum bq27xxx_dm_reg_id reg_id,unsigned int val)1271 static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di,
1272 struct bq27xxx_dm_buf *buf,
1273 enum bq27xxx_dm_reg_id reg_id,
1274 unsigned int val)
1275 {
1276 struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id];
1277 const char *str = bq27xxx_dm_reg_name[reg_id];
1278 u16 *prev = bq27xxx_dm_reg_ptr(buf, reg);
1279
1280 if (prev == NULL) {
1281 dev_warn(di->dev, "buffer does not match %s dm spec\n", str);
1282 return;
1283 }
1284
1285 if (reg->bytes != 2) {
1286 dev_warn(di->dev, "%s dm spec has unsupported byte size\n", str);
1287 return;
1288 }
1289
1290 if (!buf->has_data)
1291 return;
1292
1293 if (be16_to_cpup(prev) == val) {
1294 dev_info(di->dev, "%s has %u\n", str, val);
1295 return;
1296 }
1297
1298 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1299 if (!(di->opts & BQ27XXX_O_RAM) && !bq27xxx_dt_to_nvm) {
1300 #else
1301 if (!(di->opts & BQ27XXX_O_RAM)) {
1302 #endif
1303 /* devicetree and NVM differ; defer to NVM */
1304 dev_warn(di->dev, "%s has %u; update to %u disallowed "
1305 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1306 "by dt_monitored_battery_updates_nvm=0"
1307 #else
1308 "for flash/NVM data memory"
1309 #endif
1310 "\n", str, be16_to_cpup(prev), val);
1311 return;
1312 }
1313
1314 dev_info(di->dev, "update %s to %u\n", str, val);
1315
1316 *prev = cpu_to_be16(val);
1317 buf->dirty = true;
1318 }
1319
1320 static int bq27xxx_battery_cfgupdate_priv(struct bq27xxx_device_info *di, bool active)
1321 {
1322 const int limit = 100;
1323 u16 cmd = active ? BQ27XXX_SET_CFGUPDATE : BQ27XXX_SOFT_RESET;
1324 int ret, try = limit;
1325
1326 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, cmd, false);
1327 if (ret < 0)
1328 return ret;
1329
1330 do {
1331 BQ27XXX_MSLEEP(25);
1332 ret = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false);
1333 if (ret < 0)
1334 return ret;
1335 } while (!!(ret & BQ27XXX_FLAG_CFGUP) != active && --try);
1336
1337 if (!try && di->chip != BQ27425) { // 425 has a bug
1338 dev_err(di->dev, "timed out waiting for cfgupdate flag %d\n", active);
1339 return -EINVAL;
1340 }
1341
1342 if (limit - try > 3)
1343 dev_warn(di->dev, "cfgupdate %d, retries %d\n", active, limit - try);
1344
1345 return 0;
1346 }
1347
1348 static inline int bq27xxx_battery_set_cfgupdate(struct bq27xxx_device_info *di)
1349 {
1350 int ret = bq27xxx_battery_cfgupdate_priv(di, true);
1351 if (ret < 0 && ret != -EINVAL)
1352 dev_err(di->dev, "bus error on set_cfgupdate: %d\n", ret);
1353
1354 return ret;
1355 }
1356
1357 static inline int bq27xxx_battery_soft_reset(struct bq27xxx_device_info *di)
1358 {
1359 int ret = bq27xxx_battery_cfgupdate_priv(di, false);
1360 if (ret < 0 && ret != -EINVAL)
1361 dev_err(di->dev, "bus error on soft_reset: %d\n", ret);
1362
1363 return ret;
1364 }
1365
1366 static int bq27xxx_battery_write_dm_block(struct bq27xxx_device_info *di,
1367 struct bq27xxx_dm_buf *buf)
1368 {
1369 bool cfgup = di->opts & BQ27XXX_O_CFGUP;
1370 int ret;
1371
1372 if (!buf->dirty)
1373 return 0;
1374
1375 if (cfgup) {
1376 ret = bq27xxx_battery_set_cfgupdate(di);
1377 if (ret < 0)
1378 return ret;
1379 }
1380
1381 ret = bq27xxx_write(di, BQ27XXX_DM_CTRL, 0, true);
1382 if (ret < 0)
1383 goto out;
1384
1385 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true);
1386 if (ret < 0)
1387 goto out;
1388
1389 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true);
1390 if (ret < 0)
1391 goto out;
1392
1393 BQ27XXX_MSLEEP(1);
1394
1395 ret = bq27xxx_write_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ);
1396 if (ret < 0)
1397 goto out;
1398
1399 ret = bq27xxx_write(di, BQ27XXX_DM_CKSUM,
1400 bq27xxx_battery_checksum_dm_block(buf), true);
1401 if (ret < 0)
1402 goto out;
1403
1404 /* DO NOT read BQ27XXX_DM_CKSUM here to verify it! That may cause NVM
1405 * corruption on the '425 chip (and perhaps others), which can damage
1406 * the chip.
1407 */
1408
1409 if (cfgup) {
1410 BQ27XXX_MSLEEP(1);
1411 ret = bq27xxx_battery_soft_reset(di);
1412 if (ret < 0)
1413 return ret;
1414 } else {
1415 BQ27XXX_MSLEEP(100); /* flash DM updates in <100ms */
1416 }
1417
1418 buf->dirty = false;
1419
1420 return 0;
1421
1422 out:
1423 if (cfgup)
1424 bq27xxx_battery_soft_reset(di);
1425
1426 dev_err(di->dev, "bus error writing chip memory: %d\n", ret);
1427 return ret;
1428 }
1429
1430 static void bq27xxx_battery_set_config(struct bq27xxx_device_info *di,
1431 struct power_supply_battery_info *info)
1432 {
1433 struct bq27xxx_dm_buf bd = BQ27XXX_DM_BUF(di, BQ27XXX_DM_DESIGN_CAPACITY);
1434 struct bq27xxx_dm_buf bt = BQ27XXX_DM_BUF(di, BQ27XXX_DM_TERMINATE_VOLTAGE);
1435 bool updated;
1436
1437 if (bq27xxx_battery_unseal(di) < 0)
1438 return;
1439
1440 if (info->charge_full_design_uah != -EINVAL &&
1441 info->energy_full_design_uwh != -EINVAL) {
1442 bq27xxx_battery_read_dm_block(di, &bd);
1443 /* assume design energy & capacity are in same block */
1444 bq27xxx_battery_update_dm_block(di, &bd,
1445 BQ27XXX_DM_DESIGN_CAPACITY,
1446 info->charge_full_design_uah / 1000);
1447 bq27xxx_battery_update_dm_block(di, &bd,
1448 BQ27XXX_DM_DESIGN_ENERGY,
1449 info->energy_full_design_uwh / 1000);
1450 }
1451
1452 if (info->voltage_min_design_uv != -EINVAL) {
1453 bool same = bd.class == bt.class && bd.block == bt.block;
1454 if (!same)
1455 bq27xxx_battery_read_dm_block(di, &bt);
1456 bq27xxx_battery_update_dm_block(di, same ? &bd : &bt,
1457 BQ27XXX_DM_TERMINATE_VOLTAGE,
1458 info->voltage_min_design_uv / 1000);
1459 }
1460
1461 updated = bd.dirty || bt.dirty;
1462
1463 bq27xxx_battery_write_dm_block(di, &bd);
1464 bq27xxx_battery_write_dm_block(di, &bt);
1465
1466 bq27xxx_battery_seal(di);
1467
1468 if (updated && !(di->opts & BQ27XXX_O_CFGUP)) {
1469 bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_RESET, false);
1470 BQ27XXX_MSLEEP(300); /* reset time is not documented */
1471 }
1472 /* assume bq27xxx_battery_update() is called hereafter */
1473 }
1474
1475 static void bq27xxx_battery_settings(struct bq27xxx_device_info *di)
1476 {
1477 struct power_supply_battery_info info = {};
1478 unsigned int min, max;
1479
1480 if (power_supply_get_battery_info(di->bat, &info) < 0)
1481 return;
1482
1483 if (!di->dm_regs) {
1484 dev_warn(di->dev, "data memory update not supported for chip\n");
1485 return;
1486 }
1487
1488 if (info.energy_full_design_uwh != info.charge_full_design_uah) {
1489 if (info.energy_full_design_uwh == -EINVAL)
1490 dev_warn(di->dev, "missing battery:energy-full-design-microwatt-hours\n");
1491 else if (info.charge_full_design_uah == -EINVAL)
1492 dev_warn(di->dev, "missing battery:charge-full-design-microamp-hours\n");
1493 }
1494
1495 /* assume min == 0 */
1496 max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max;
1497 if (info.energy_full_design_uwh > max * 1000) {
1498 dev_err(di->dev, "invalid battery:energy-full-design-microwatt-hours %d\n",
1499 info.energy_full_design_uwh);
1500 info.energy_full_design_uwh = -EINVAL;
1501 }
1502
1503 /* assume min == 0 */
1504 max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max;
1505 if (info.charge_full_design_uah > max * 1000) {
1506 dev_err(di->dev, "invalid battery:charge-full-design-microamp-hours %d\n",
1507 info.charge_full_design_uah);
1508 info.charge_full_design_uah = -EINVAL;
1509 }
1510
1511 min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min;
1512 max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max;
1513 if ((info.voltage_min_design_uv < min * 1000 ||
1514 info.voltage_min_design_uv > max * 1000) &&
1515 info.voltage_min_design_uv != -EINVAL) {
1516 dev_err(di->dev, "invalid battery:voltage-min-design-microvolt %d\n",
1517 info.voltage_min_design_uv);
1518 info.voltage_min_design_uv = -EINVAL;
1519 }
1520
1521 if ((info.energy_full_design_uwh != -EINVAL &&
1522 info.charge_full_design_uah != -EINVAL) ||
1523 info.voltage_min_design_uv != -EINVAL)
1524 bq27xxx_battery_set_config(di, &info);
1525 }
1526
1527 /*
1528 * Return the battery State-of-Charge
1529 * Or < 0 if something fails.
1530 */
1531 static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di)
1532 {
1533 int soc;
1534
1535 if (di->opts & BQ27XXX_O_SOC_SI)
1536 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, true);
1537 else
1538 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false);
1539
1540 if (soc < 0)
1541 dev_dbg(di->dev, "error reading State-of-Charge\n");
1542
1543 return soc;
1544 }
1545
1546 /*
1547 * Return a battery charge value in µAh
1548 * Or < 0 if something fails.
1549 */
1550 static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg)
1551 {
1552 int charge;
1553
1554 charge = bq27xxx_read(di, reg, false);
1555 if (charge < 0) {
1556 dev_dbg(di->dev, "error reading charge register %02x: %d\n",
1557 reg, charge);
1558 return charge;
1559 }
1560
1561 if (di->opts & BQ27XXX_O_ZERO)
1562 charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1563 else
1564 charge *= 1000;
1565
1566 return charge;
1567 }
1568
1569 /*
1570 * Return the battery Nominal available capacity in µAh
1571 * Or < 0 if something fails.
1572 */
1573 static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di)
1574 {
1575 int flags;
1576
1577 if (di->opts & BQ27XXX_O_ZERO) {
1578 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true);
1579 if (flags >= 0 && (flags & BQ27000_FLAG_CI))
1580 return -ENODATA;
1581 }
1582
1583 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC);
1584 }
1585
1586 /*
1587 * Return the battery Remaining Capacity in µAh
1588 * Or < 0 if something fails.
1589 */
1590 static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di)
1591 {
1592 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC);
1593 }
1594
1595 /*
1596 * Return the battery Full Charge Capacity in µAh
1597 * Or < 0 if something fails.
1598 */
1599 static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di)
1600 {
1601 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC);
1602 }
1603
1604 /*
1605 * Return the Design Capacity in µAh
1606 * Or < 0 if something fails.
1607 */
1608 static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di)
1609 {
1610 int dcap;
1611
1612 if (di->opts & BQ27XXX_O_ZERO)
1613 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true);
1614 else
1615 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false);
1616
1617 if (dcap < 0) {
1618 dev_dbg(di->dev, "error reading initial last measured discharge\n");
1619 return dcap;
1620 }
1621
1622 if (di->opts & BQ27XXX_O_ZERO)
1623 dcap = (dcap << 8) * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1624 else
1625 dcap *= 1000;
1626
1627 return dcap;
1628 }
1629
1630 /*
1631 * Return the battery Available energy in µWh
1632 * Or < 0 if something fails.
1633 */
1634 static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di)
1635 {
1636 int ae;
1637
1638 ae = bq27xxx_read(di, BQ27XXX_REG_AE, false);
1639 if (ae < 0) {
1640 dev_dbg(di->dev, "error reading available energy\n");
1641 return ae;
1642 }
1643
1644 if (di->opts & BQ27XXX_O_ZERO)
1645 ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS;
1646 else
1647 ae *= 1000;
1648
1649 return ae;
1650 }
1651
1652 /*
1653 * Return the battery temperature in tenths of degree Kelvin
1654 * Or < 0 if something fails.
1655 */
1656 static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di)
1657 {
1658 int temp;
1659
1660 temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false);
1661 if (temp < 0) {
1662 dev_err(di->dev, "error reading temperature\n");
1663 return temp;
1664 }
1665
1666 if (di->opts & BQ27XXX_O_ZERO)
1667 temp = 5 * temp / 2;
1668
1669 return temp;
1670 }
1671
1672 /*
1673 * Return the battery Cycle count total
1674 * Or < 0 if something fails.
1675 */
1676 static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di)
1677 {
1678 int cyct;
1679
1680 cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false);
1681 if (cyct < 0)
1682 dev_err(di->dev, "error reading cycle count total\n");
1683
1684 return cyct;
1685 }
1686
1687 /*
1688 * Read a time register.
1689 * Return < 0 if something fails.
1690 */
1691 static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg)
1692 {
1693 int tval;
1694
1695 tval = bq27xxx_read(di, reg, false);
1696 if (tval < 0) {
1697 dev_dbg(di->dev, "error reading time register %02x: %d\n",
1698 reg, tval);
1699 return tval;
1700 }
1701
1702 if (tval == 65535)
1703 return -ENODATA;
1704
1705 return tval * 60;
1706 }
1707
1708 /*
1709 * Returns true if a battery over temperature condition is detected
1710 */
1711 static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags)
1712 {
1713 if (di->opts & BQ27XXX_O_OTDC)
1714 return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD);
1715 if (di->opts & BQ27XXX_O_UTOT)
1716 return flags & BQ27XXX_FLAG_OT;
1717
1718 return false;
1719 }
1720
1721 /*
1722 * Returns true if a battery under temperature condition is detected
1723 */
1724 static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags)
1725 {
1726 if (di->opts & BQ27XXX_O_UTOT)
1727 return flags & BQ27XXX_FLAG_UT;
1728
1729 return false;
1730 }
1731
1732 /*
1733 * Returns true if a low state of charge condition is detected
1734 */
1735 static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags)
1736 {
1737 if (di->opts & BQ27XXX_O_ZERO)
1738 return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF);
1739 else if (di->opts & BQ27Z561_O_BITS)
1740 return flags & BQ27Z561_FLAG_FDC;
1741 else
1742 return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF);
1743 }
1744
1745 static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
1746 {
1747 /* Unlikely but important to return first */
1748 if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags)))
1749 return POWER_SUPPLY_HEALTH_OVERHEAT;
1750 if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags)))
1751 return POWER_SUPPLY_HEALTH_COLD;
1752 if (unlikely(bq27xxx_battery_dead(di, di->cache.flags)))
1753 return POWER_SUPPLY_HEALTH_DEAD;
1754
1755 return POWER_SUPPLY_HEALTH_GOOD;
1756 }
1757
1758 void bq27xxx_battery_update(struct bq27xxx_device_info *di)
1759 {
1760 struct bq27xxx_reg_cache cache = {0, };
1761 bool has_ci_flag = di->opts & BQ27XXX_O_HAS_CI;
1762 bool has_singe_flag = di->opts & BQ27XXX_O_ZERO;
1763
1764 cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag);
1765 if ((cache.flags & 0xff) == 0xff)
1766 cache.flags = -1; /* read error */
1767 if (cache.flags >= 0) {
1768 cache.temperature = bq27xxx_battery_read_temperature(di);
1769 if (has_ci_flag && (cache.flags & BQ27000_FLAG_CI)) {
1770 dev_info_once(di->dev, "battery is not calibrated! ignoring capacity values\n");
1771 cache.capacity = -ENODATA;
1772 cache.energy = -ENODATA;
1773 cache.time_to_empty = -ENODATA;
1774 cache.time_to_empty_avg = -ENODATA;
1775 cache.time_to_full = -ENODATA;
1776 cache.charge_full = -ENODATA;
1777 cache.health = -ENODATA;
1778 } else {
1779 if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
1780 cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
1781 if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
1782 cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
1783 if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
1784 cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
1785
1786 cache.charge_full = bq27xxx_battery_read_fcc(di);
1787 cache.capacity = bq27xxx_battery_read_soc(di);
1788 if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
1789 cache.energy = bq27xxx_battery_read_energy(di);
1790 di->cache.flags = cache.flags;
1791 cache.health = bq27xxx_battery_read_health(di);
1792 }
1793 if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
1794 cache.cycle_count = bq27xxx_battery_read_cyct(di);
1795
1796 /* We only have to read charge design full once */
1797 if (di->charge_design_full <= 0)
1798 di->charge_design_full = bq27xxx_battery_read_dcap(di);
1799 }
1800
1801 if ((di->cache.capacity != cache.capacity) ||
1802 (di->cache.flags != cache.flags))
1803 power_supply_changed(di->bat);
1804
1805 if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
1806 di->cache = cache;
1807
1808 di->last_update = jiffies;
1809 }
1810 EXPORT_SYMBOL_GPL(bq27xxx_battery_update);
1811
1812 static void bq27xxx_battery_poll(struct work_struct *work)
1813 {
1814 struct bq27xxx_device_info *di =
1815 container_of(work, struct bq27xxx_device_info,
1816 work.work);
1817
1818 bq27xxx_battery_update(di);
1819
1820 if (poll_interval > 0)
1821 schedule_delayed_work(&di->work, poll_interval * HZ);
1822 }
1823
1824 static bool bq27xxx_battery_is_full(struct bq27xxx_device_info *di, int flags)
1825 {
1826 if (di->opts & BQ27XXX_O_ZERO)
1827 return (flags & BQ27000_FLAG_FC);
1828 else if (di->opts & BQ27Z561_O_BITS)
1829 return (flags & BQ27Z561_FLAG_FC);
1830 else
1831 return (flags & BQ27XXX_FLAG_FC);
1832 }
1833
1834 /*
1835 * Return the battery average current in µA and the status
1836 * Note that current can be negative signed as well
1837 * Or 0 if something fails.
1838 */
1839 static int bq27xxx_battery_current_and_status(
1840 struct bq27xxx_device_info *di,
1841 union power_supply_propval *val_curr,
1842 union power_supply_propval *val_status)
1843 {
1844 bool single_flags = (di->opts & BQ27XXX_O_ZERO);
1845 int curr;
1846 int flags;
1847
1848 curr = bq27xxx_read(di, BQ27XXX_REG_AI, false);
1849 if (curr < 0) {
1850 dev_err(di->dev, "error reading current\n");
1851 return curr;
1852 }
1853
1854 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, single_flags);
1855 if (flags < 0) {
1856 dev_err(di->dev, "error reading flags\n");
1857 return flags;
1858 }
1859
1860 if (di->opts & BQ27XXX_O_ZERO) {
1861 if (!(flags & BQ27000_FLAG_CHGS)) {
1862 dev_dbg(di->dev, "negative current!\n");
1863 curr = -curr;
1864 }
1865
1866 curr = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1867 } else {
1868 /* Other gauges return signed value */
1869 curr = (int)((s16)curr) * 1000;
1870 }
1871
1872 if (val_curr)
1873 val_curr->intval = curr;
1874
1875 if (val_status) {
1876 if (curr > 0) {
1877 val_status->intval = POWER_SUPPLY_STATUS_CHARGING;
1878 } else if (curr < 0) {
1879 val_status->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1880 } else {
1881 if (bq27xxx_battery_is_full(di, flags))
1882 val_status->intval = POWER_SUPPLY_STATUS_FULL;
1883 else
1884 val_status->intval =
1885 POWER_SUPPLY_STATUS_NOT_CHARGING;
1886 }
1887 }
1888
1889 return 0;
1890 }
1891
1892 /*
1893 * Get the average power in µW
1894 * Return < 0 if something fails.
1895 */
1896 static int bq27xxx_battery_pwr_avg(struct bq27xxx_device_info *di,
1897 union power_supply_propval *val)
1898 {
1899 int power;
1900
1901 power = bq27xxx_read(di, BQ27XXX_REG_AP, false);
1902 if (power < 0) {
1903 dev_err(di->dev,
1904 "error reading average power register %02x: %d\n",
1905 BQ27XXX_REG_AP, power);
1906 return power;
1907 }
1908
1909 if (di->opts & BQ27XXX_O_ZERO)
1910 val->intval = (power * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS;
1911 else
1912 /* Other gauges return a signed value in units of 10mW */
1913 val->intval = (int)((s16)power) * 10000;
1914
1915 return 0;
1916 }
1917
1918 static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di,
1919 union power_supply_propval *val)
1920 {
1921 int level;
1922
1923 if (di->opts & BQ27XXX_O_ZERO) {
1924 if (di->cache.flags & BQ27000_FLAG_FC)
1925 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1926 else if (di->cache.flags & BQ27000_FLAG_EDV1)
1927 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
1928 else if (di->cache.flags & BQ27000_FLAG_EDVF)
1929 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1930 else
1931 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1932 } else if (di->opts & BQ27Z561_O_BITS) {
1933 if (di->cache.flags & BQ27Z561_FLAG_FC)
1934 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1935 else if (di->cache.flags & BQ27Z561_FLAG_FDC)
1936 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1937 else
1938 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1939 } else {
1940 if (di->cache.flags & BQ27XXX_FLAG_FC)
1941 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1942 else if (di->cache.flags & BQ27XXX_FLAG_SOC1)
1943 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
1944 else if (di->cache.flags & BQ27XXX_FLAG_SOCF)
1945 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1946 else
1947 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1948 }
1949
1950 val->intval = level;
1951
1952 return 0;
1953 }
1954
1955 /*
1956 * Return the battery Voltage in millivolts
1957 * Or < 0 if something fails.
1958 */
1959 static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di,
1960 union power_supply_propval *val)
1961 {
1962 int volt;
1963
1964 volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false);
1965 if (volt < 0) {
1966 dev_err(di->dev, "error reading voltage\n");
1967 return volt;
1968 }
1969
1970 val->intval = volt * 1000;
1971
1972 return 0;
1973 }
1974
1975 static int bq27xxx_simple_value(int value,
1976 union power_supply_propval *val)
1977 {
1978 if (value < 0)
1979 return value;
1980
1981 val->intval = value;
1982
1983 return 0;
1984 }
1985
1986 static int bq27xxx_battery_get_property(struct power_supply *psy,
1987 enum power_supply_property psp,
1988 union power_supply_propval *val)
1989 {
1990 int ret = 0;
1991 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
1992
1993 mutex_lock(&di->lock);
1994 if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
1995 cancel_delayed_work_sync(&di->work);
1996 bq27xxx_battery_poll(&di->work.work);
1997 }
1998 mutex_unlock(&di->lock);
1999
2000 if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
2001 return -ENODEV;
2002
2003 switch (psp) {
2004 case POWER_SUPPLY_PROP_STATUS:
2005 ret = bq27xxx_battery_current_and_status(di, NULL, val);
2006 break;
2007 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
2008 ret = bq27xxx_battery_voltage(di, val);
2009 break;
2010 case POWER_SUPPLY_PROP_PRESENT:
2011 val->intval = di->cache.flags < 0 ? 0 : 1;
2012 break;
2013 case POWER_SUPPLY_PROP_CURRENT_NOW:
2014 ret = bq27xxx_battery_current_and_status(di, val, NULL);
2015 break;
2016 case POWER_SUPPLY_PROP_CAPACITY:
2017 ret = bq27xxx_simple_value(di->cache.capacity, val);
2018 break;
2019 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
2020 ret = bq27xxx_battery_capacity_level(di, val);
2021 break;
2022 case POWER_SUPPLY_PROP_TEMP:
2023 ret = bq27xxx_simple_value(di->cache.temperature, val);
2024 if (ret == 0)
2025 val->intval -= 2731; /* convert decidegree k to c */
2026 break;
2027 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
2028 ret = bq27xxx_simple_value(di->cache.time_to_empty, val);
2029 break;
2030 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
2031 ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val);
2032 break;
2033 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
2034 ret = bq27xxx_simple_value(di->cache.time_to_full, val);
2035 break;
2036 case POWER_SUPPLY_PROP_TECHNOLOGY:
2037 if (di->opts & BQ27XXX_O_MUL_CHEM)
2038 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
2039 else
2040 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
2041 break;
2042 case POWER_SUPPLY_PROP_CHARGE_NOW:
2043 if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR)
2044 ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val);
2045 else
2046 ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val);
2047 break;
2048 case POWER_SUPPLY_PROP_CHARGE_FULL:
2049 ret = bq27xxx_simple_value(di->cache.charge_full, val);
2050 break;
2051 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
2052 ret = bq27xxx_simple_value(di->charge_design_full, val);
2053 break;
2054 /*
2055 * TODO: Implement these to make registers set from
2056 * power_supply_battery_info visible in sysfs.
2057 */
2058 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
2059 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
2060 return -EINVAL;
2061 case POWER_SUPPLY_PROP_CYCLE_COUNT:
2062 ret = bq27xxx_simple_value(di->cache.cycle_count, val);
2063 break;
2064 case POWER_SUPPLY_PROP_ENERGY_NOW:
2065 ret = bq27xxx_simple_value(di->cache.energy, val);
2066 break;
2067 case POWER_SUPPLY_PROP_POWER_AVG:
2068 ret = bq27xxx_battery_pwr_avg(di, val);
2069 break;
2070 case POWER_SUPPLY_PROP_HEALTH:
2071 ret = bq27xxx_simple_value(di->cache.health, val);
2072 break;
2073 case POWER_SUPPLY_PROP_MANUFACTURER:
2074 val->strval = BQ27XXX_MANUFACTURER;
2075 break;
2076 default:
2077 return -EINVAL;
2078 }
2079
2080 return ret;
2081 }
2082
2083 static void bq27xxx_external_power_changed(struct power_supply *psy)
2084 {
2085 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
2086
2087 cancel_delayed_work_sync(&di->work);
2088 schedule_delayed_work(&di->work, 0);
2089 }
2090
2091 int bq27xxx_battery_setup(struct bq27xxx_device_info *di)
2092 {
2093 struct power_supply_desc *psy_desc;
2094 struct power_supply_config psy_cfg = {
2095 .of_node = di->dev->of_node,
2096 .drv_data = di,
2097 };
2098
2099 INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll);
2100 mutex_init(&di->lock);
2101
2102 di->regs = bq27xxx_chip_data[di->chip].regs;
2103 di->unseal_key = bq27xxx_chip_data[di->chip].unseal_key;
2104 di->dm_regs = bq27xxx_chip_data[di->chip].dm_regs;
2105 di->opts = bq27xxx_chip_data[di->chip].opts;
2106
2107 psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL);
2108 if (!psy_desc)
2109 return -ENOMEM;
2110
2111 psy_desc->name = di->name;
2112 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
2113 psy_desc->properties = bq27xxx_chip_data[di->chip].props;
2114 psy_desc->num_properties = bq27xxx_chip_data[di->chip].props_size;
2115 psy_desc->get_property = bq27xxx_battery_get_property;
2116 psy_desc->external_power_changed = bq27xxx_external_power_changed;
2117
2118 di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
2119 if (IS_ERR(di->bat))
2120 return dev_err_probe(di->dev, PTR_ERR(di->bat),
2121 "failed to register battery\n");
2122
2123 bq27xxx_battery_settings(di);
2124 bq27xxx_battery_update(di);
2125
2126 mutex_lock(&bq27xxx_list_lock);
2127 list_add(&di->list, &bq27xxx_battery_devices);
2128 mutex_unlock(&bq27xxx_list_lock);
2129
2130 return 0;
2131 }
2132 EXPORT_SYMBOL_GPL(bq27xxx_battery_setup);
2133
2134 void bq27xxx_battery_teardown(struct bq27xxx_device_info *di)
2135 {
2136 /*
2137 * power_supply_unregister call bq27xxx_battery_get_property which
2138 * call bq27xxx_battery_poll.
2139 * Make sure that bq27xxx_battery_poll will not call
2140 * schedule_delayed_work again after unregister (which cause OOPS).
2141 */
2142 poll_interval = 0;
2143
2144 cancel_delayed_work_sync(&di->work);
2145
2146 power_supply_unregister(di->bat);
2147
2148 mutex_lock(&bq27xxx_list_lock);
2149 list_del(&di->list);
2150 mutex_unlock(&bq27xxx_list_lock);
2151
2152 mutex_destroy(&di->lock);
2153 }
2154 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown);
2155
2156 MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
2157 MODULE_DESCRIPTION("BQ27xxx battery monitor driver");
2158 MODULE_LICENSE("GPL");
2159