1 // SPDX-License-Identifier: GPL-2.0
3 * BQ27xxx battery driver
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>
11 * Based on a previous work by Copyright (C) 2008 Texas Instruments, Inc.
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
44 #include <linux/device.h>
45 #include <linux/module.h>
46 #include <linux/mutex.h>
47 #include <linux/param.h>
48 #include <linux/jiffies.h>
49 #include <linux/workqueue.h>
50 #include <linux/delay.h>
51 #include <linux/platform_device.h>
52 #include <linux/power_supply.h>
53 #include <linux/slab.h>
56 #include <linux/power/bq27xxx_battery.h>
58 #define BQ27XXX_MANUFACTURER "Texas Instruments"
61 #define BQ27XXX_FLAG_DSC BIT(0)
62 #define BQ27XXX_FLAG_SOCF BIT(1) /* State-of-Charge threshold final */
63 #define BQ27XXX_FLAG_SOC1 BIT(2) /* State-of-Charge threshold 1 */
64 #define BQ27XXX_FLAG_CFGUP BIT(4)
65 #define BQ27XXX_FLAG_FC BIT(9)
66 #define BQ27XXX_FLAG_OTD BIT(14)
67 #define BQ27XXX_FLAG_OTC BIT(15)
68 #define BQ27XXX_FLAG_UT BIT(14)
69 #define BQ27XXX_FLAG_OT BIT(15)
71 /* BQ27000 has different layout for Flags register */
72 #define BQ27000_FLAG_EDVF BIT(0) /* Final End-of-Discharge-Voltage flag */
73 #define BQ27000_FLAG_EDV1 BIT(1) /* First End-of-Discharge-Voltage flag */
74 #define BQ27000_FLAG_CI BIT(4) /* Capacity Inaccurate flag */
75 #define BQ27000_FLAG_FC BIT(5)
76 #define BQ27000_FLAG_CHGS BIT(7) /* Charge state flag */
78 /* BQ27Z561 has different layout for Flags register */
79 #define BQ27Z561_FLAG_FDC BIT(4) /* Battery fully discharged */
80 #define BQ27Z561_FLAG_FC BIT(5) /* Battery fully charged */
81 #define BQ27Z561_FLAG_DIS_CH BIT(6) /* Battery is discharging */
83 /* control register params */
84 #define BQ27XXX_SEALED 0x20
85 #define BQ27XXX_SET_CFGUPDATE 0x13
86 #define BQ27XXX_SOFT_RESET 0x42
87 #define BQ27XXX_RESET 0x41
89 #define BQ27XXX_RS (20) /* Resistor sense mOhm */
90 #define BQ27XXX_POWER_CONSTANT (29200) /* 29.2 µV^2 * 1000 */
91 #define BQ27XXX_CURRENT_CONSTANT (3570) /* 3.57 µV * 1000 */
93 #define INVALID_REG_ADDR 0xff
96 * bq27xxx_reg_index - Register names
98 * These are indexes into a device's register mapping array.
101 enum bq27xxx_reg_index {
102 BQ27XXX_REG_CTRL = 0, /* Control */
103 BQ27XXX_REG_TEMP, /* Temperature */
104 BQ27XXX_REG_INT_TEMP, /* Internal Temperature */
105 BQ27XXX_REG_VOLT, /* Voltage */
106 BQ27XXX_REG_AI, /* Average Current */
107 BQ27XXX_REG_FLAGS, /* Flags */
108 BQ27XXX_REG_TTE, /* Time-to-Empty */
109 BQ27XXX_REG_TTF, /* Time-to-Full */
110 BQ27XXX_REG_TTES, /* Time-to-Empty Standby */
111 BQ27XXX_REG_TTECP, /* Time-to-Empty at Constant Power */
112 BQ27XXX_REG_NAC, /* Nominal Available Capacity */
113 BQ27XXX_REG_RC, /* Remaining Capacity */
114 BQ27XXX_REG_FCC, /* Full Charge Capacity */
115 BQ27XXX_REG_CYCT, /* Cycle Count */
116 BQ27XXX_REG_AE, /* Available Energy */
117 BQ27XXX_REG_SOC, /* State-of-Charge */
118 BQ27XXX_REG_DCAP, /* Design Capacity */
119 BQ27XXX_REG_AP, /* Average Power */
120 BQ27XXX_DM_CTRL, /* Block Data Control */
121 BQ27XXX_DM_CLASS, /* Data Class */
122 BQ27XXX_DM_BLOCK, /* Data Block */
123 BQ27XXX_DM_DATA, /* Block Data */
124 BQ27XXX_DM_CKSUM, /* Block Data Checksum */
125 BQ27XXX_REG_MAX, /* sentinel */
128 #define BQ27XXX_DM_REG_ROWS \
129 [BQ27XXX_DM_CTRL] = 0x61, \
130 [BQ27XXX_DM_CLASS] = 0x3e, \
131 [BQ27XXX_DM_BLOCK] = 0x3f, \
132 [BQ27XXX_DM_DATA] = 0x40, \
133 [BQ27XXX_DM_CKSUM] = 0x60
135 /* Register mappings */
137 bq27000_regs[BQ27XXX_REG_MAX] = {
138 [BQ27XXX_REG_CTRL] = 0x00,
139 [BQ27XXX_REG_TEMP] = 0x06,
140 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
141 [BQ27XXX_REG_VOLT] = 0x08,
142 [BQ27XXX_REG_AI] = 0x14,
143 [BQ27XXX_REG_FLAGS] = 0x0a,
144 [BQ27XXX_REG_TTE] = 0x16,
145 [BQ27XXX_REG_TTF] = 0x18,
146 [BQ27XXX_REG_TTES] = 0x1c,
147 [BQ27XXX_REG_TTECP] = 0x26,
148 [BQ27XXX_REG_NAC] = 0x0c,
149 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
150 [BQ27XXX_REG_FCC] = 0x12,
151 [BQ27XXX_REG_CYCT] = 0x2a,
152 [BQ27XXX_REG_AE] = 0x22,
153 [BQ27XXX_REG_SOC] = 0x0b,
154 [BQ27XXX_REG_DCAP] = 0x76,
155 [BQ27XXX_REG_AP] = 0x24,
156 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
157 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
158 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
159 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
160 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
162 bq27010_regs[BQ27XXX_REG_MAX] = {
163 [BQ27XXX_REG_CTRL] = 0x00,
164 [BQ27XXX_REG_TEMP] = 0x06,
165 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
166 [BQ27XXX_REG_VOLT] = 0x08,
167 [BQ27XXX_REG_AI] = 0x14,
168 [BQ27XXX_REG_FLAGS] = 0x0a,
169 [BQ27XXX_REG_TTE] = 0x16,
170 [BQ27XXX_REG_TTF] = 0x18,
171 [BQ27XXX_REG_TTES] = 0x1c,
172 [BQ27XXX_REG_TTECP] = 0x26,
173 [BQ27XXX_REG_NAC] = 0x0c,
174 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
175 [BQ27XXX_REG_FCC] = 0x12,
176 [BQ27XXX_REG_CYCT] = 0x2a,
177 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
178 [BQ27XXX_REG_SOC] = 0x0b,
179 [BQ27XXX_REG_DCAP] = 0x76,
180 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
181 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
182 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
183 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
184 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
185 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
187 bq2750x_regs[BQ27XXX_REG_MAX] = {
188 [BQ27XXX_REG_CTRL] = 0x00,
189 [BQ27XXX_REG_TEMP] = 0x06,
190 [BQ27XXX_REG_INT_TEMP] = 0x28,
191 [BQ27XXX_REG_VOLT] = 0x08,
192 [BQ27XXX_REG_AI] = 0x14,
193 [BQ27XXX_REG_FLAGS] = 0x0a,
194 [BQ27XXX_REG_TTE] = 0x16,
195 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
196 [BQ27XXX_REG_TTES] = 0x1a,
197 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
198 [BQ27XXX_REG_NAC] = 0x0c,
199 [BQ27XXX_REG_RC] = 0x10,
200 [BQ27XXX_REG_FCC] = 0x12,
201 [BQ27XXX_REG_CYCT] = 0x2a,
202 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
203 [BQ27XXX_REG_SOC] = 0x2c,
204 [BQ27XXX_REG_DCAP] = 0x3c,
205 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
208 #define bq2751x_regs bq27510g3_regs
209 #define bq2752x_regs bq27510g3_regs
210 bq27500_regs[BQ27XXX_REG_MAX] = {
211 [BQ27XXX_REG_CTRL] = 0x00,
212 [BQ27XXX_REG_TEMP] = 0x06,
213 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
214 [BQ27XXX_REG_VOLT] = 0x08,
215 [BQ27XXX_REG_AI] = 0x14,
216 [BQ27XXX_REG_FLAGS] = 0x0a,
217 [BQ27XXX_REG_TTE] = 0x16,
218 [BQ27XXX_REG_TTF] = 0x18,
219 [BQ27XXX_REG_TTES] = 0x1c,
220 [BQ27XXX_REG_TTECP] = 0x26,
221 [BQ27XXX_REG_NAC] = 0x0c,
222 [BQ27XXX_REG_RC] = 0x10,
223 [BQ27XXX_REG_FCC] = 0x12,
224 [BQ27XXX_REG_CYCT] = 0x2a,
225 [BQ27XXX_REG_AE] = 0x22,
226 [BQ27XXX_REG_SOC] = 0x2c,
227 [BQ27XXX_REG_DCAP] = 0x3c,
228 [BQ27XXX_REG_AP] = 0x24,
231 #define bq27510g1_regs bq27500_regs
232 #define bq27510g2_regs bq27500_regs
233 bq27510g3_regs[BQ27XXX_REG_MAX] = {
234 [BQ27XXX_REG_CTRL] = 0x00,
235 [BQ27XXX_REG_TEMP] = 0x06,
236 [BQ27XXX_REG_INT_TEMP] = 0x28,
237 [BQ27XXX_REG_VOLT] = 0x08,
238 [BQ27XXX_REG_AI] = 0x14,
239 [BQ27XXX_REG_FLAGS] = 0x0a,
240 [BQ27XXX_REG_TTE] = 0x16,
241 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
242 [BQ27XXX_REG_TTES] = 0x1a,
243 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
244 [BQ27XXX_REG_NAC] = 0x0c,
245 [BQ27XXX_REG_RC] = 0x10,
246 [BQ27XXX_REG_FCC] = 0x12,
247 [BQ27XXX_REG_CYCT] = 0x1e,
248 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
249 [BQ27XXX_REG_SOC] = 0x20,
250 [BQ27XXX_REG_DCAP] = 0x2e,
251 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
254 bq27520g1_regs[BQ27XXX_REG_MAX] = {
255 [BQ27XXX_REG_CTRL] = 0x00,
256 [BQ27XXX_REG_TEMP] = 0x06,
257 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
258 [BQ27XXX_REG_VOLT] = 0x08,
259 [BQ27XXX_REG_AI] = 0x14,
260 [BQ27XXX_REG_FLAGS] = 0x0a,
261 [BQ27XXX_REG_TTE] = 0x16,
262 [BQ27XXX_REG_TTF] = 0x18,
263 [BQ27XXX_REG_TTES] = 0x1c,
264 [BQ27XXX_REG_TTECP] = 0x26,
265 [BQ27XXX_REG_NAC] = 0x0c,
266 [BQ27XXX_REG_RC] = 0x10,
267 [BQ27XXX_REG_FCC] = 0x12,
268 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
269 [BQ27XXX_REG_AE] = 0x22,
270 [BQ27XXX_REG_SOC] = 0x2c,
271 [BQ27XXX_REG_DCAP] = 0x3c,
272 [BQ27XXX_REG_AP] = 0x24,
275 bq27520g2_regs[BQ27XXX_REG_MAX] = {
276 [BQ27XXX_REG_CTRL] = 0x00,
277 [BQ27XXX_REG_TEMP] = 0x06,
278 [BQ27XXX_REG_INT_TEMP] = 0x36,
279 [BQ27XXX_REG_VOLT] = 0x08,
280 [BQ27XXX_REG_AI] = 0x14,
281 [BQ27XXX_REG_FLAGS] = 0x0a,
282 [BQ27XXX_REG_TTE] = 0x16,
283 [BQ27XXX_REG_TTF] = 0x18,
284 [BQ27XXX_REG_TTES] = 0x1c,
285 [BQ27XXX_REG_TTECP] = 0x26,
286 [BQ27XXX_REG_NAC] = 0x0c,
287 [BQ27XXX_REG_RC] = 0x10,
288 [BQ27XXX_REG_FCC] = 0x12,
289 [BQ27XXX_REG_CYCT] = 0x2a,
290 [BQ27XXX_REG_AE] = 0x22,
291 [BQ27XXX_REG_SOC] = 0x2c,
292 [BQ27XXX_REG_DCAP] = 0x3c,
293 [BQ27XXX_REG_AP] = 0x24,
296 bq27520g3_regs[BQ27XXX_REG_MAX] = {
297 [BQ27XXX_REG_CTRL] = 0x00,
298 [BQ27XXX_REG_TEMP] = 0x06,
299 [BQ27XXX_REG_INT_TEMP] = 0x36,
300 [BQ27XXX_REG_VOLT] = 0x08,
301 [BQ27XXX_REG_AI] = 0x14,
302 [BQ27XXX_REG_FLAGS] = 0x0a,
303 [BQ27XXX_REG_TTE] = 0x16,
304 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
305 [BQ27XXX_REG_TTES] = 0x1c,
306 [BQ27XXX_REG_TTECP] = 0x26,
307 [BQ27XXX_REG_NAC] = 0x0c,
308 [BQ27XXX_REG_RC] = 0x10,
309 [BQ27XXX_REG_FCC] = 0x12,
310 [BQ27XXX_REG_CYCT] = 0x2a,
311 [BQ27XXX_REG_AE] = 0x22,
312 [BQ27XXX_REG_SOC] = 0x2c,
313 [BQ27XXX_REG_DCAP] = 0x3c,
314 [BQ27XXX_REG_AP] = 0x24,
317 bq27520g4_regs[BQ27XXX_REG_MAX] = {
318 [BQ27XXX_REG_CTRL] = 0x00,
319 [BQ27XXX_REG_TEMP] = 0x06,
320 [BQ27XXX_REG_INT_TEMP] = 0x28,
321 [BQ27XXX_REG_VOLT] = 0x08,
322 [BQ27XXX_REG_AI] = 0x14,
323 [BQ27XXX_REG_FLAGS] = 0x0a,
324 [BQ27XXX_REG_TTE] = 0x16,
325 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
326 [BQ27XXX_REG_TTES] = 0x1c,
327 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
328 [BQ27XXX_REG_NAC] = 0x0c,
329 [BQ27XXX_REG_RC] = 0x10,
330 [BQ27XXX_REG_FCC] = 0x12,
331 [BQ27XXX_REG_CYCT] = 0x1e,
332 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
333 [BQ27XXX_REG_SOC] = 0x20,
334 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
335 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
338 bq27521_regs[BQ27XXX_REG_MAX] = {
339 [BQ27XXX_REG_CTRL] = 0x02,
340 [BQ27XXX_REG_TEMP] = 0x0a,
341 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
342 [BQ27XXX_REG_VOLT] = 0x0c,
343 [BQ27XXX_REG_AI] = 0x0e,
344 [BQ27XXX_REG_FLAGS] = 0x08,
345 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR,
346 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
347 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
348 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
349 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
350 [BQ27XXX_REG_RC] = INVALID_REG_ADDR,
351 [BQ27XXX_REG_FCC] = INVALID_REG_ADDR,
352 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
353 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
354 [BQ27XXX_REG_SOC] = INVALID_REG_ADDR,
355 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
356 [BQ27XXX_REG_AP] = INVALID_REG_ADDR,
357 [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR,
358 [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR,
359 [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR,
360 [BQ27XXX_DM_DATA] = INVALID_REG_ADDR,
361 [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR,
363 bq27530_regs[BQ27XXX_REG_MAX] = {
364 [BQ27XXX_REG_CTRL] = 0x00,
365 [BQ27XXX_REG_TEMP] = 0x06,
366 [BQ27XXX_REG_INT_TEMP] = 0x32,
367 [BQ27XXX_REG_VOLT] = 0x08,
368 [BQ27XXX_REG_AI] = 0x14,
369 [BQ27XXX_REG_FLAGS] = 0x0a,
370 [BQ27XXX_REG_TTE] = 0x16,
371 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
372 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
373 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
374 [BQ27XXX_REG_NAC] = 0x0c,
375 [BQ27XXX_REG_RC] = 0x10,
376 [BQ27XXX_REG_FCC] = 0x12,
377 [BQ27XXX_REG_CYCT] = 0x2a,
378 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
379 [BQ27XXX_REG_SOC] = 0x2c,
380 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
381 [BQ27XXX_REG_AP] = 0x24,
384 #define bq27531_regs bq27530_regs
385 bq27541_regs[BQ27XXX_REG_MAX] = {
386 [BQ27XXX_REG_CTRL] = 0x00,
387 [BQ27XXX_REG_TEMP] = 0x06,
388 [BQ27XXX_REG_INT_TEMP] = 0x28,
389 [BQ27XXX_REG_VOLT] = 0x08,
390 [BQ27XXX_REG_AI] = 0x14,
391 [BQ27XXX_REG_FLAGS] = 0x0a,
392 [BQ27XXX_REG_TTE] = 0x16,
393 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
394 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
395 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
396 [BQ27XXX_REG_NAC] = 0x0c,
397 [BQ27XXX_REG_RC] = 0x10,
398 [BQ27XXX_REG_FCC] = 0x12,
399 [BQ27XXX_REG_CYCT] = 0x2a,
400 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
401 [BQ27XXX_REG_SOC] = 0x2c,
402 [BQ27XXX_REG_DCAP] = 0x3c,
403 [BQ27XXX_REG_AP] = 0x24,
406 #define bq27542_regs bq27541_regs
407 #define bq27546_regs bq27541_regs
408 #define bq27742_regs bq27541_regs
409 bq27545_regs[BQ27XXX_REG_MAX] = {
410 [BQ27XXX_REG_CTRL] = 0x00,
411 [BQ27XXX_REG_TEMP] = 0x06,
412 [BQ27XXX_REG_INT_TEMP] = 0x28,
413 [BQ27XXX_REG_VOLT] = 0x08,
414 [BQ27XXX_REG_AI] = 0x14,
415 [BQ27XXX_REG_FLAGS] = 0x0a,
416 [BQ27XXX_REG_TTE] = 0x16,
417 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
418 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
419 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
420 [BQ27XXX_REG_NAC] = 0x0c,
421 [BQ27XXX_REG_RC] = 0x10,
422 [BQ27XXX_REG_FCC] = 0x12,
423 [BQ27XXX_REG_CYCT] = 0x2a,
424 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
425 [BQ27XXX_REG_SOC] = 0x2c,
426 [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR,
427 [BQ27XXX_REG_AP] = 0x24,
430 bq27421_regs[BQ27XXX_REG_MAX] = {
431 [BQ27XXX_REG_CTRL] = 0x00,
432 [BQ27XXX_REG_TEMP] = 0x02,
433 [BQ27XXX_REG_INT_TEMP] = 0x1e,
434 [BQ27XXX_REG_VOLT] = 0x04,
435 [BQ27XXX_REG_AI] = 0x10,
436 [BQ27XXX_REG_FLAGS] = 0x06,
437 [BQ27XXX_REG_TTE] = INVALID_REG_ADDR,
438 [BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
439 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
440 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
441 [BQ27XXX_REG_NAC] = 0x08,
442 [BQ27XXX_REG_RC] = 0x0c,
443 [BQ27XXX_REG_FCC] = 0x0e,
444 [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR,
445 [BQ27XXX_REG_AE] = INVALID_REG_ADDR,
446 [BQ27XXX_REG_SOC] = 0x1c,
447 [BQ27XXX_REG_DCAP] = 0x3c,
448 [BQ27XXX_REG_AP] = 0x18,
451 #define bq27411_regs bq27421_regs
452 #define bq27425_regs bq27421_regs
453 #define bq27426_regs bq27421_regs
454 #define bq27441_regs bq27421_regs
455 #define bq27621_regs bq27421_regs
456 bq27z561_regs[BQ27XXX_REG_MAX] = {
457 [BQ27XXX_REG_CTRL] = 0x00,
458 [BQ27XXX_REG_TEMP] = 0x06,
459 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
460 [BQ27XXX_REG_VOLT] = 0x08,
461 [BQ27XXX_REG_AI] = 0x14,
462 [BQ27XXX_REG_FLAGS] = 0x0a,
463 [BQ27XXX_REG_TTE] = 0x16,
464 [BQ27XXX_REG_TTF] = 0x18,
465 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
466 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
467 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
468 [BQ27XXX_REG_RC] = 0x10,
469 [BQ27XXX_REG_FCC] = 0x12,
470 [BQ27XXX_REG_CYCT] = 0x2a,
471 [BQ27XXX_REG_AE] = 0x22,
472 [BQ27XXX_REG_SOC] = 0x2c,
473 [BQ27XXX_REG_DCAP] = 0x3c,
474 [BQ27XXX_REG_AP] = 0x22,
477 bq28z610_regs[BQ27XXX_REG_MAX] = {
478 [BQ27XXX_REG_CTRL] = 0x00,
479 [BQ27XXX_REG_TEMP] = 0x06,
480 [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR,
481 [BQ27XXX_REG_VOLT] = 0x08,
482 [BQ27XXX_REG_AI] = 0x14,
483 [BQ27XXX_REG_FLAGS] = 0x0a,
484 [BQ27XXX_REG_TTE] = 0x16,
485 [BQ27XXX_REG_TTF] = 0x18,
486 [BQ27XXX_REG_TTES] = INVALID_REG_ADDR,
487 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
488 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
489 [BQ27XXX_REG_RC] = 0x10,
490 [BQ27XXX_REG_FCC] = 0x12,
491 [BQ27XXX_REG_CYCT] = 0x2a,
492 [BQ27XXX_REG_AE] = 0x22,
493 [BQ27XXX_REG_SOC] = 0x2c,
494 [BQ27XXX_REG_DCAP] = 0x3c,
495 [BQ27XXX_REG_AP] = 0x22,
498 bq34z100_regs[BQ27XXX_REG_MAX] = {
499 [BQ27XXX_REG_CTRL] = 0x00,
500 [BQ27XXX_REG_TEMP] = 0x0c,
501 [BQ27XXX_REG_INT_TEMP] = 0x2a,
502 [BQ27XXX_REG_VOLT] = 0x08,
503 [BQ27XXX_REG_AI] = 0x0a,
504 [BQ27XXX_REG_FLAGS] = 0x0e,
505 [BQ27XXX_REG_TTE] = 0x18,
506 [BQ27XXX_REG_TTF] = 0x1a,
507 [BQ27XXX_REG_TTES] = 0x1e,
508 [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
509 [BQ27XXX_REG_NAC] = INVALID_REG_ADDR,
510 [BQ27XXX_REG_RC] = 0x04,
511 [BQ27XXX_REG_FCC] = 0x06,
512 [BQ27XXX_REG_CYCT] = 0x2c,
513 [BQ27XXX_REG_AE] = 0x24,
514 [BQ27XXX_REG_SOC] = 0x02,
515 [BQ27XXX_REG_DCAP] = 0x3c,
516 [BQ27XXX_REG_AP] = 0x22,
520 static enum power_supply_property bq27000_props[] = {
521 POWER_SUPPLY_PROP_STATUS,
522 POWER_SUPPLY_PROP_PRESENT,
523 POWER_SUPPLY_PROP_VOLTAGE_NOW,
524 POWER_SUPPLY_PROP_CURRENT_NOW,
525 POWER_SUPPLY_PROP_CAPACITY,
526 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
527 POWER_SUPPLY_PROP_TEMP,
528 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
529 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
530 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
531 POWER_SUPPLY_PROP_TECHNOLOGY,
532 POWER_SUPPLY_PROP_CHARGE_FULL,
533 POWER_SUPPLY_PROP_CHARGE_NOW,
534 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
535 POWER_SUPPLY_PROP_CYCLE_COUNT,
536 POWER_SUPPLY_PROP_ENERGY_NOW,
537 POWER_SUPPLY_PROP_POWER_AVG,
538 POWER_SUPPLY_PROP_HEALTH,
539 POWER_SUPPLY_PROP_MANUFACTURER,
542 static enum power_supply_property bq27010_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_HEALTH,
559 POWER_SUPPLY_PROP_MANUFACTURER,
562 #define bq2750x_props bq27510g3_props
563 #define bq2751x_props bq27510g3_props
564 #define bq2752x_props bq27510g3_props
566 static enum power_supply_property bq27500_props[] = {
567 POWER_SUPPLY_PROP_STATUS,
568 POWER_SUPPLY_PROP_PRESENT,
569 POWER_SUPPLY_PROP_VOLTAGE_NOW,
570 POWER_SUPPLY_PROP_CURRENT_NOW,
571 POWER_SUPPLY_PROP_CAPACITY,
572 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
573 POWER_SUPPLY_PROP_TEMP,
574 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
575 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
576 POWER_SUPPLY_PROP_TECHNOLOGY,
577 POWER_SUPPLY_PROP_CHARGE_FULL,
578 POWER_SUPPLY_PROP_CHARGE_NOW,
579 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
580 POWER_SUPPLY_PROP_CYCLE_COUNT,
581 POWER_SUPPLY_PROP_ENERGY_NOW,
582 POWER_SUPPLY_PROP_POWER_AVG,
583 POWER_SUPPLY_PROP_HEALTH,
584 POWER_SUPPLY_PROP_MANUFACTURER,
586 #define bq27510g1_props bq27500_props
587 #define bq27510g2_props bq27500_props
589 static enum power_supply_property bq27510g3_props[] = {
590 POWER_SUPPLY_PROP_STATUS,
591 POWER_SUPPLY_PROP_PRESENT,
592 POWER_SUPPLY_PROP_VOLTAGE_NOW,
593 POWER_SUPPLY_PROP_CURRENT_NOW,
594 POWER_SUPPLY_PROP_CAPACITY,
595 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
596 POWER_SUPPLY_PROP_TEMP,
597 POWER_SUPPLY_PROP_TIME_TO_EMPTY_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_HEALTH,
604 POWER_SUPPLY_PROP_MANUFACTURER,
607 static enum power_supply_property bq27520g1_props[] = {
608 POWER_SUPPLY_PROP_STATUS,
609 POWER_SUPPLY_PROP_PRESENT,
610 POWER_SUPPLY_PROP_VOLTAGE_NOW,
611 POWER_SUPPLY_PROP_CURRENT_NOW,
612 POWER_SUPPLY_PROP_CAPACITY,
613 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
614 POWER_SUPPLY_PROP_TEMP,
615 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
616 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
617 POWER_SUPPLY_PROP_TECHNOLOGY,
618 POWER_SUPPLY_PROP_CHARGE_FULL,
619 POWER_SUPPLY_PROP_CHARGE_NOW,
620 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
621 POWER_SUPPLY_PROP_ENERGY_NOW,
622 POWER_SUPPLY_PROP_POWER_AVG,
623 POWER_SUPPLY_PROP_HEALTH,
624 POWER_SUPPLY_PROP_MANUFACTURER,
627 #define bq27520g2_props bq27500_props
629 static enum power_supply_property bq27520g3_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_TECHNOLOGY,
639 POWER_SUPPLY_PROP_CHARGE_FULL,
640 POWER_SUPPLY_PROP_CHARGE_NOW,
641 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
642 POWER_SUPPLY_PROP_CYCLE_COUNT,
643 POWER_SUPPLY_PROP_ENERGY_NOW,
644 POWER_SUPPLY_PROP_POWER_AVG,
645 POWER_SUPPLY_PROP_HEALTH,
646 POWER_SUPPLY_PROP_MANUFACTURER,
649 static enum power_supply_property bq27520g4_props[] = {
650 POWER_SUPPLY_PROP_STATUS,
651 POWER_SUPPLY_PROP_PRESENT,
652 POWER_SUPPLY_PROP_VOLTAGE_NOW,
653 POWER_SUPPLY_PROP_CURRENT_NOW,
654 POWER_SUPPLY_PROP_CAPACITY,
655 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
656 POWER_SUPPLY_PROP_TEMP,
657 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
658 POWER_SUPPLY_PROP_TECHNOLOGY,
659 POWER_SUPPLY_PROP_CHARGE_FULL,
660 POWER_SUPPLY_PROP_CHARGE_NOW,
661 POWER_SUPPLY_PROP_CYCLE_COUNT,
662 POWER_SUPPLY_PROP_HEALTH,
663 POWER_SUPPLY_PROP_MANUFACTURER,
666 static enum power_supply_property bq27521_props[] = {
667 POWER_SUPPLY_PROP_STATUS,
668 POWER_SUPPLY_PROP_PRESENT,
669 POWER_SUPPLY_PROP_VOLTAGE_NOW,
670 POWER_SUPPLY_PROP_CURRENT_NOW,
671 POWER_SUPPLY_PROP_TEMP,
672 POWER_SUPPLY_PROP_TECHNOLOGY,
675 static enum power_supply_property bq27530_props[] = {
676 POWER_SUPPLY_PROP_STATUS,
677 POWER_SUPPLY_PROP_PRESENT,
678 POWER_SUPPLY_PROP_VOLTAGE_NOW,
679 POWER_SUPPLY_PROP_CURRENT_NOW,
680 POWER_SUPPLY_PROP_CAPACITY,
681 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
682 POWER_SUPPLY_PROP_TEMP,
683 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
684 POWER_SUPPLY_PROP_TECHNOLOGY,
685 POWER_SUPPLY_PROP_CHARGE_FULL,
686 POWER_SUPPLY_PROP_CHARGE_NOW,
687 POWER_SUPPLY_PROP_POWER_AVG,
688 POWER_SUPPLY_PROP_HEALTH,
689 POWER_SUPPLY_PROP_CYCLE_COUNT,
690 POWER_SUPPLY_PROP_MANUFACTURER,
692 #define bq27531_props bq27530_props
694 static enum power_supply_property bq27541_props[] = {
695 POWER_SUPPLY_PROP_STATUS,
696 POWER_SUPPLY_PROP_PRESENT,
697 POWER_SUPPLY_PROP_VOLTAGE_NOW,
698 POWER_SUPPLY_PROP_CURRENT_NOW,
699 POWER_SUPPLY_PROP_CAPACITY,
700 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
701 POWER_SUPPLY_PROP_TEMP,
702 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
703 POWER_SUPPLY_PROP_TECHNOLOGY,
704 POWER_SUPPLY_PROP_CHARGE_FULL,
705 POWER_SUPPLY_PROP_CHARGE_NOW,
706 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
707 POWER_SUPPLY_PROP_CYCLE_COUNT,
708 POWER_SUPPLY_PROP_POWER_AVG,
709 POWER_SUPPLY_PROP_HEALTH,
710 POWER_SUPPLY_PROP_MANUFACTURER,
712 #define bq27542_props bq27541_props
713 #define bq27546_props bq27541_props
714 #define bq27742_props bq27541_props
716 static enum power_supply_property bq27545_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_HEALTH,
729 POWER_SUPPLY_PROP_CYCLE_COUNT,
730 POWER_SUPPLY_PROP_POWER_AVG,
731 POWER_SUPPLY_PROP_MANUFACTURER,
734 static enum power_supply_property bq27421_props[] = {
735 POWER_SUPPLY_PROP_STATUS,
736 POWER_SUPPLY_PROP_PRESENT,
737 POWER_SUPPLY_PROP_VOLTAGE_NOW,
738 POWER_SUPPLY_PROP_CURRENT_NOW,
739 POWER_SUPPLY_PROP_CAPACITY,
740 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
741 POWER_SUPPLY_PROP_TEMP,
742 POWER_SUPPLY_PROP_TECHNOLOGY,
743 POWER_SUPPLY_PROP_CHARGE_FULL,
744 POWER_SUPPLY_PROP_CHARGE_NOW,
745 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
746 POWER_SUPPLY_PROP_MANUFACTURER,
748 #define bq27411_props bq27421_props
749 #define bq27425_props bq27421_props
750 #define bq27426_props bq27421_props
751 #define bq27441_props bq27421_props
752 #define bq27621_props bq27421_props
754 static enum power_supply_property bq27z561_props[] = {
755 POWER_SUPPLY_PROP_STATUS,
756 POWER_SUPPLY_PROP_PRESENT,
757 POWER_SUPPLY_PROP_VOLTAGE_NOW,
758 POWER_SUPPLY_PROP_CURRENT_NOW,
759 POWER_SUPPLY_PROP_CAPACITY,
760 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
761 POWER_SUPPLY_PROP_TEMP,
762 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
763 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
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_CYCLE_COUNT,
769 POWER_SUPPLY_PROP_POWER_AVG,
770 POWER_SUPPLY_PROP_HEALTH,
771 POWER_SUPPLY_PROP_MANUFACTURER,
774 static enum power_supply_property bq28z610_props[] = {
775 POWER_SUPPLY_PROP_STATUS,
776 POWER_SUPPLY_PROP_PRESENT,
777 POWER_SUPPLY_PROP_VOLTAGE_NOW,
778 POWER_SUPPLY_PROP_CURRENT_NOW,
779 POWER_SUPPLY_PROP_CAPACITY,
780 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
781 POWER_SUPPLY_PROP_TEMP,
782 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
783 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
784 POWER_SUPPLY_PROP_TECHNOLOGY,
785 POWER_SUPPLY_PROP_CHARGE_FULL,
786 POWER_SUPPLY_PROP_CHARGE_NOW,
787 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
788 POWER_SUPPLY_PROP_CYCLE_COUNT,
789 POWER_SUPPLY_PROP_POWER_AVG,
790 POWER_SUPPLY_PROP_HEALTH,
791 POWER_SUPPLY_PROP_MANUFACTURER,
794 static enum power_supply_property bq34z100_props[] = {
795 POWER_SUPPLY_PROP_STATUS,
796 POWER_SUPPLY_PROP_PRESENT,
797 POWER_SUPPLY_PROP_VOLTAGE_NOW,
798 POWER_SUPPLY_PROP_CURRENT_NOW,
799 POWER_SUPPLY_PROP_CAPACITY,
800 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
801 POWER_SUPPLY_PROP_TEMP,
802 POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
803 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
804 POWER_SUPPLY_PROP_TIME_TO_FULL_NOW,
805 POWER_SUPPLY_PROP_TECHNOLOGY,
806 POWER_SUPPLY_PROP_CHARGE_FULL,
807 POWER_SUPPLY_PROP_CHARGE_NOW,
808 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
809 POWER_SUPPLY_PROP_CYCLE_COUNT,
810 POWER_SUPPLY_PROP_ENERGY_NOW,
811 POWER_SUPPLY_PROP_POWER_AVG,
812 POWER_SUPPLY_PROP_HEALTH,
813 POWER_SUPPLY_PROP_MANUFACTURER,
816 struct bq27xxx_dm_reg {
823 enum bq27xxx_dm_reg_id {
824 BQ27XXX_DM_DESIGN_CAPACITY = 0,
825 BQ27XXX_DM_DESIGN_ENERGY,
826 BQ27XXX_DM_TERMINATE_VOLTAGE,
829 #define bq27000_dm_regs 0
830 #define bq27010_dm_regs 0
831 #define bq2750x_dm_regs 0
832 #define bq2751x_dm_regs 0
833 #define bq2752x_dm_regs 0
835 #if 0 /* not yet tested */
836 static struct bq27xxx_dm_reg bq27500_dm_regs[] = {
837 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 10, 2, 0, 65535 },
838 [BQ27XXX_DM_DESIGN_ENERGY] = { }, /* missing on chip */
839 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 48, 2, 1000, 32767 },
842 #define bq27500_dm_regs 0
845 /* todo create data memory definitions from datasheets and test on chips */
846 #define bq27510g1_dm_regs 0
847 #define bq27510g2_dm_regs 0
848 #define bq27510g3_dm_regs 0
849 #define bq27520g1_dm_regs 0
850 #define bq27520g2_dm_regs 0
851 #define bq27520g3_dm_regs 0
852 #define bq27520g4_dm_regs 0
853 #define bq27521_dm_regs 0
854 #define bq27530_dm_regs 0
855 #define bq27531_dm_regs 0
856 #define bq27541_dm_regs 0
857 #define bq27542_dm_regs 0
858 #define bq27546_dm_regs 0
859 #define bq27742_dm_regs 0
861 #if 0 /* not yet tested */
862 static struct bq27xxx_dm_reg bq27545_dm_regs[] = {
863 [BQ27XXX_DM_DESIGN_CAPACITY] = { 48, 23, 2, 0, 32767 },
864 [BQ27XXX_DM_DESIGN_ENERGY] = { 48, 25, 2, 0, 32767 },
865 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 80, 67, 2, 2800, 3700 },
868 #define bq27545_dm_regs 0
871 static struct bq27xxx_dm_reg bq27411_dm_regs[] = {
872 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 32767 },
873 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 },
874 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2800, 3700 },
877 static struct bq27xxx_dm_reg bq27421_dm_regs[] = {
878 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 10, 2, 0, 8000 },
879 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 12, 2, 0, 32767 },
880 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 16, 2, 2500, 3700 },
883 static struct bq27xxx_dm_reg bq27425_dm_regs[] = {
884 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 12, 2, 0, 32767 },
885 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 14, 2, 0, 32767 },
886 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 18, 2, 2800, 3700 },
889 static struct bq27xxx_dm_reg bq27426_dm_regs[] = {
890 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 6, 2, 0, 8000 },
891 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 8, 2, 0, 32767 },
892 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 10, 2, 2500, 3700 },
895 #if 0 /* not yet tested */
896 #define bq27441_dm_regs bq27421_dm_regs
898 #define bq27441_dm_regs 0
901 #if 0 /* not yet tested */
902 static struct bq27xxx_dm_reg bq27621_dm_regs[] = {
903 [BQ27XXX_DM_DESIGN_CAPACITY] = { 82, 3, 2, 0, 8000 },
904 [BQ27XXX_DM_DESIGN_ENERGY] = { 82, 5, 2, 0, 32767 },
905 [BQ27XXX_DM_TERMINATE_VOLTAGE] = { 82, 9, 2, 2500, 3700 },
908 #define bq27621_dm_regs 0
911 #define bq27z561_dm_regs 0
912 #define bq28z610_dm_regs 0
913 #define bq34z100_dm_regs 0
915 #define BQ27XXX_O_ZERO BIT(0)
916 #define BQ27XXX_O_OTDC BIT(1) /* has OTC/OTD overtemperature flags */
917 #define BQ27XXX_O_UTOT BIT(2) /* has OT overtemperature flag */
918 #define BQ27XXX_O_CFGUP BIT(3)
919 #define BQ27XXX_O_RAM BIT(4)
920 #define BQ27Z561_O_BITS BIT(5)
921 #define BQ27XXX_O_SOC_SI BIT(6) /* SoC is single register */
922 #define BQ27XXX_O_HAS_CI BIT(7) /* has Capacity Inaccurate flag */
923 #define BQ27XXX_O_MUL_CHEM BIT(8) /* multiple chemistries supported */
925 #define BQ27XXX_DATA(ref, key, opt) { \
928 .regs = ref##_regs, \
929 .dm_regs = ref##_dm_regs, \
930 .props = ref##_props, \
931 .props_size = ARRAY_SIZE(ref##_props) }
937 struct bq27xxx_dm_reg *dm_regs;
938 enum power_supply_property *props;
940 } bq27xxx_chip_data[] = {
941 [BQ27000] = BQ27XXX_DATA(bq27000, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI),
942 [BQ27010] = BQ27XXX_DATA(bq27010, 0 , BQ27XXX_O_ZERO | BQ27XXX_O_SOC_SI | BQ27XXX_O_HAS_CI),
943 [BQ2750X] = BQ27XXX_DATA(bq2750x, 0 , BQ27XXX_O_OTDC),
944 [BQ2751X] = BQ27XXX_DATA(bq2751x, 0 , BQ27XXX_O_OTDC),
945 [BQ2752X] = BQ27XXX_DATA(bq2752x, 0 , BQ27XXX_O_OTDC),
946 [BQ27500] = BQ27XXX_DATA(bq27500, 0x04143672, BQ27XXX_O_OTDC),
947 [BQ27510G1] = BQ27XXX_DATA(bq27510g1, 0 , BQ27XXX_O_OTDC),
948 [BQ27510G2] = BQ27XXX_DATA(bq27510g2, 0 , BQ27XXX_O_OTDC),
949 [BQ27510G3] = BQ27XXX_DATA(bq27510g3, 0 , BQ27XXX_O_OTDC),
950 [BQ27520G1] = BQ27XXX_DATA(bq27520g1, 0 , BQ27XXX_O_OTDC),
951 [BQ27520G2] = BQ27XXX_DATA(bq27520g2, 0 , BQ27XXX_O_OTDC),
952 [BQ27520G3] = BQ27XXX_DATA(bq27520g3, 0 , BQ27XXX_O_OTDC),
953 [BQ27520G4] = BQ27XXX_DATA(bq27520g4, 0 , BQ27XXX_O_OTDC),
954 [BQ27521] = BQ27XXX_DATA(bq27521, 0 , 0),
955 [BQ27530] = BQ27XXX_DATA(bq27530, 0 , BQ27XXX_O_UTOT),
956 [BQ27531] = BQ27XXX_DATA(bq27531, 0 , BQ27XXX_O_UTOT),
957 [BQ27541] = BQ27XXX_DATA(bq27541, 0 , BQ27XXX_O_OTDC),
958 [BQ27542] = BQ27XXX_DATA(bq27542, 0 , BQ27XXX_O_OTDC),
959 [BQ27546] = BQ27XXX_DATA(bq27546, 0 , BQ27XXX_O_OTDC),
960 [BQ27742] = BQ27XXX_DATA(bq27742, 0 , BQ27XXX_O_OTDC),
961 [BQ27545] = BQ27XXX_DATA(bq27545, 0x04143672, BQ27XXX_O_OTDC),
962 [BQ27411] = BQ27XXX_DATA(bq27411, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
963 [BQ27421] = BQ27XXX_DATA(bq27421, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
964 [BQ27425] = BQ27XXX_DATA(bq27425, 0x04143672, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP),
965 [BQ27426] = BQ27XXX_DATA(bq27426, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
966 [BQ27441] = BQ27XXX_DATA(bq27441, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
967 [BQ27621] = BQ27XXX_DATA(bq27621, 0x80008000, BQ27XXX_O_UTOT | BQ27XXX_O_CFGUP | BQ27XXX_O_RAM),
968 [BQ27Z561] = BQ27XXX_DATA(bq27z561, 0 , BQ27Z561_O_BITS),
969 [BQ28Z610] = BQ27XXX_DATA(bq28z610, 0 , BQ27Z561_O_BITS),
970 [BQ34Z100] = BQ27XXX_DATA(bq34z100, 0 , BQ27XXX_O_OTDC | BQ27XXX_O_SOC_SI | \
971 BQ27XXX_O_HAS_CI | BQ27XXX_O_MUL_CHEM),
974 static DEFINE_MUTEX(bq27xxx_list_lock);
975 static LIST_HEAD(bq27xxx_battery_devices);
977 #define BQ27XXX_MSLEEP(i) usleep_range((i)*1000, (i)*1000+500)
979 #define BQ27XXX_DM_SZ 32
982 * struct bq27xxx_dm_buf - chip data memory buffer
983 * @class: data memory subclass_id
984 * @block: data memory block number
985 * @data: data from/for the block
986 * @has_data: true if data has been filled by read
987 * @dirty: true if data has changed since last read/write
989 * Encapsulates info required to manage chip data memory blocks.
991 struct bq27xxx_dm_buf {
994 u8 data[BQ27XXX_DM_SZ];
995 bool has_data, dirty;
998 #define BQ27XXX_DM_BUF(di, i) { \
999 .class = (di)->dm_regs[i].subclass_id, \
1000 .block = (di)->dm_regs[i].offset / BQ27XXX_DM_SZ, \
1003 static inline u16 *bq27xxx_dm_reg_ptr(struct bq27xxx_dm_buf *buf,
1004 struct bq27xxx_dm_reg *reg)
1006 if (buf->class == reg->subclass_id &&
1007 buf->block == reg->offset / BQ27XXX_DM_SZ)
1008 return (u16 *) (buf->data + reg->offset % BQ27XXX_DM_SZ);
1013 static const char * const bq27xxx_dm_reg_name[] = {
1014 [BQ27XXX_DM_DESIGN_CAPACITY] = "design-capacity",
1015 [BQ27XXX_DM_DESIGN_ENERGY] = "design-energy",
1016 [BQ27XXX_DM_TERMINATE_VOLTAGE] = "terminate-voltage",
1020 static bool bq27xxx_dt_to_nvm = true;
1021 module_param_named(dt_monitored_battery_updates_nvm, bq27xxx_dt_to_nvm, bool, 0444);
1022 MODULE_PARM_DESC(dt_monitored_battery_updates_nvm,
1023 "Devicetree monitored-battery config updates data memory on NVM/flash chips.\n"
1024 "Users must set this =0 when installing a different type of battery!\n"
1026 #ifndef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1027 "\nSetting this affects future kernel updates, not the current configuration."
1031 static int poll_interval_param_set(const char *val, const struct kernel_param *kp)
1033 struct bq27xxx_device_info *di;
1034 unsigned int prev_val = *(unsigned int *) kp->arg;
1037 ret = param_set_uint(val, kp);
1038 if (ret < 0 || prev_val == *(unsigned int *) kp->arg)
1041 mutex_lock(&bq27xxx_list_lock);
1042 list_for_each_entry(di, &bq27xxx_battery_devices, list) {
1043 cancel_delayed_work_sync(&di->work);
1044 schedule_delayed_work(&di->work, 0);
1046 mutex_unlock(&bq27xxx_list_lock);
1051 static const struct kernel_param_ops param_ops_poll_interval = {
1052 .get = param_get_uint,
1053 .set = poll_interval_param_set,
1056 static unsigned int poll_interval = 360;
1057 module_param_cb(poll_interval, ¶m_ops_poll_interval, &poll_interval, 0644);
1058 MODULE_PARM_DESC(poll_interval,
1059 "battery poll interval in seconds - 0 disables polling");
1062 * Common code for BQ27xxx devices
1065 static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index,
1070 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1073 ret = di->bus.read(di, di->regs[reg_index], single);
1075 dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n",
1076 di->regs[reg_index], reg_index);
1081 static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index,
1082 u16 value, bool single)
1086 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1092 ret = di->bus.write(di, di->regs[reg_index], value, single);
1094 dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n",
1095 di->regs[reg_index], reg_index);
1100 static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index,
1105 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1108 if (!di->bus.read_bulk)
1111 ret = di->bus.read_bulk(di, di->regs[reg_index], data, len);
1113 dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n",
1114 di->regs[reg_index], reg_index);
1119 static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index,
1124 if (!di || di->regs[reg_index] == INVALID_REG_ADDR)
1127 if (!di->bus.write_bulk)
1130 ret = di->bus.write_bulk(di, di->regs[reg_index], data, len);
1132 dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n",
1133 di->regs[reg_index], reg_index);
1138 static int bq27xxx_battery_seal(struct bq27xxx_device_info *di)
1142 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_SEALED, false);
1144 dev_err(di->dev, "bus error on seal: %d\n", ret);
1151 static int bq27xxx_battery_unseal(struct bq27xxx_device_info *di)
1155 if (di->unseal_key == 0) {
1156 dev_err(di->dev, "unseal failed due to missing key\n");
1160 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)(di->unseal_key >> 16), false);
1164 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, (u16)di->unseal_key, false);
1171 dev_err(di->dev, "bus error on unseal: %d\n", ret);
1175 static u8 bq27xxx_battery_checksum_dm_block(struct bq27xxx_dm_buf *buf)
1180 for (i = 0; i < BQ27XXX_DM_SZ; i++)
1181 sum += buf->data[i];
1187 static int bq27xxx_battery_read_dm_block(struct bq27xxx_device_info *di,
1188 struct bq27xxx_dm_buf *buf)
1192 buf->has_data = false;
1194 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true);
1198 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true);
1204 ret = bq27xxx_read_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ);
1208 ret = bq27xxx_read(di, BQ27XXX_DM_CKSUM, true);
1212 if ((u8)ret != bq27xxx_battery_checksum_dm_block(buf)) {
1217 buf->has_data = true;
1223 dev_err(di->dev, "bus error reading chip memory: %d\n", ret);
1227 static void bq27xxx_battery_update_dm_block(struct bq27xxx_device_info *di,
1228 struct bq27xxx_dm_buf *buf,
1229 enum bq27xxx_dm_reg_id reg_id,
1232 struct bq27xxx_dm_reg *reg = &di->dm_regs[reg_id];
1233 const char *str = bq27xxx_dm_reg_name[reg_id];
1234 u16 *prev = bq27xxx_dm_reg_ptr(buf, reg);
1237 dev_warn(di->dev, "buffer does not match %s dm spec\n", str);
1241 if (reg->bytes != 2) {
1242 dev_warn(di->dev, "%s dm spec has unsupported byte size\n", str);
1249 if (be16_to_cpup(prev) == val) {
1250 dev_info(di->dev, "%s has %u\n", str, val);
1254 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1255 if (!(di->opts & BQ27XXX_O_RAM) && !bq27xxx_dt_to_nvm) {
1257 if (!(di->opts & BQ27XXX_O_RAM)) {
1259 /* devicetree and NVM differ; defer to NVM */
1260 dev_warn(di->dev, "%s has %u; update to %u disallowed "
1261 #ifdef CONFIG_BATTERY_BQ27XXX_DT_UPDATES_NVM
1262 "by dt_monitored_battery_updates_nvm=0"
1264 "for flash/NVM data memory"
1266 "\n", str, be16_to_cpup(prev), val);
1270 dev_info(di->dev, "update %s to %u\n", str, val);
1272 *prev = cpu_to_be16(val);
1276 static int bq27xxx_battery_cfgupdate_priv(struct bq27xxx_device_info *di, bool active)
1278 const int limit = 100;
1279 u16 cmd = active ? BQ27XXX_SET_CFGUPDATE : BQ27XXX_SOFT_RESET;
1280 int ret, try = limit;
1282 ret = bq27xxx_write(di, BQ27XXX_REG_CTRL, cmd, false);
1288 ret = bq27xxx_read(di, BQ27XXX_REG_FLAGS, false);
1291 } while (!!(ret & BQ27XXX_FLAG_CFGUP) != active && --try);
1293 if (!try && di->chip != BQ27425) { // 425 has a bug
1294 dev_err(di->dev, "timed out waiting for cfgupdate flag %d\n", active);
1298 if (limit - try > 3)
1299 dev_warn(di->dev, "cfgupdate %d, retries %d\n", active, limit - try);
1304 static inline int bq27xxx_battery_set_cfgupdate(struct bq27xxx_device_info *di)
1306 int ret = bq27xxx_battery_cfgupdate_priv(di, true);
1307 if (ret < 0 && ret != -EINVAL)
1308 dev_err(di->dev, "bus error on set_cfgupdate: %d\n", ret);
1313 static inline int bq27xxx_battery_soft_reset(struct bq27xxx_device_info *di)
1315 int ret = bq27xxx_battery_cfgupdate_priv(di, false);
1316 if (ret < 0 && ret != -EINVAL)
1317 dev_err(di->dev, "bus error on soft_reset: %d\n", ret);
1322 static int bq27xxx_battery_write_dm_block(struct bq27xxx_device_info *di,
1323 struct bq27xxx_dm_buf *buf)
1325 bool cfgup = di->opts & BQ27XXX_O_CFGUP;
1332 ret = bq27xxx_battery_set_cfgupdate(di);
1337 ret = bq27xxx_write(di, BQ27XXX_DM_CTRL, 0, true);
1341 ret = bq27xxx_write(di, BQ27XXX_DM_CLASS, buf->class, true);
1345 ret = bq27xxx_write(di, BQ27XXX_DM_BLOCK, buf->block, true);
1351 ret = bq27xxx_write_block(di, BQ27XXX_DM_DATA, buf->data, BQ27XXX_DM_SZ);
1355 ret = bq27xxx_write(di, BQ27XXX_DM_CKSUM,
1356 bq27xxx_battery_checksum_dm_block(buf), true);
1360 /* DO NOT read BQ27XXX_DM_CKSUM here to verify it! That may cause NVM
1361 * corruption on the '425 chip (and perhaps others), which can damage
1367 ret = bq27xxx_battery_soft_reset(di);
1371 BQ27XXX_MSLEEP(100); /* flash DM updates in <100ms */
1380 bq27xxx_battery_soft_reset(di);
1382 dev_err(di->dev, "bus error writing chip memory: %d\n", ret);
1386 static void bq27xxx_battery_set_config(struct bq27xxx_device_info *di,
1387 struct power_supply_battery_info *info)
1389 struct bq27xxx_dm_buf bd = BQ27XXX_DM_BUF(di, BQ27XXX_DM_DESIGN_CAPACITY);
1390 struct bq27xxx_dm_buf bt = BQ27XXX_DM_BUF(di, BQ27XXX_DM_TERMINATE_VOLTAGE);
1393 if (bq27xxx_battery_unseal(di) < 0)
1396 if (info->charge_full_design_uah != -EINVAL &&
1397 info->energy_full_design_uwh != -EINVAL) {
1398 bq27xxx_battery_read_dm_block(di, &bd);
1399 /* assume design energy & capacity are in same block */
1400 bq27xxx_battery_update_dm_block(di, &bd,
1401 BQ27XXX_DM_DESIGN_CAPACITY,
1402 info->charge_full_design_uah / 1000);
1403 bq27xxx_battery_update_dm_block(di, &bd,
1404 BQ27XXX_DM_DESIGN_ENERGY,
1405 info->energy_full_design_uwh / 1000);
1408 if (info->voltage_min_design_uv != -EINVAL) {
1409 bool same = bd.class == bt.class && bd.block == bt.block;
1411 bq27xxx_battery_read_dm_block(di, &bt);
1412 bq27xxx_battery_update_dm_block(di, same ? &bd : &bt,
1413 BQ27XXX_DM_TERMINATE_VOLTAGE,
1414 info->voltage_min_design_uv / 1000);
1417 updated = bd.dirty || bt.dirty;
1419 bq27xxx_battery_write_dm_block(di, &bd);
1420 bq27xxx_battery_write_dm_block(di, &bt);
1422 bq27xxx_battery_seal(di);
1424 if (updated && !(di->opts & BQ27XXX_O_CFGUP)) {
1425 bq27xxx_write(di, BQ27XXX_REG_CTRL, BQ27XXX_RESET, false);
1426 BQ27XXX_MSLEEP(300); /* reset time is not documented */
1428 /* assume bq27xxx_battery_update() is called hereafter */
1431 static void bq27xxx_battery_settings(struct bq27xxx_device_info *di)
1433 struct power_supply_battery_info info = {};
1434 unsigned int min, max;
1436 if (power_supply_get_battery_info(di->bat, &info) < 0)
1440 dev_warn(di->dev, "data memory update not supported for chip\n");
1444 if (info.energy_full_design_uwh != info.charge_full_design_uah) {
1445 if (info.energy_full_design_uwh == -EINVAL)
1446 dev_warn(di->dev, "missing battery:energy-full-design-microwatt-hours\n");
1447 else if (info.charge_full_design_uah == -EINVAL)
1448 dev_warn(di->dev, "missing battery:charge-full-design-microamp-hours\n");
1451 /* assume min == 0 */
1452 max = di->dm_regs[BQ27XXX_DM_DESIGN_ENERGY].max;
1453 if (info.energy_full_design_uwh > max * 1000) {
1454 dev_err(di->dev, "invalid battery:energy-full-design-microwatt-hours %d\n",
1455 info.energy_full_design_uwh);
1456 info.energy_full_design_uwh = -EINVAL;
1459 /* assume min == 0 */
1460 max = di->dm_regs[BQ27XXX_DM_DESIGN_CAPACITY].max;
1461 if (info.charge_full_design_uah > max * 1000) {
1462 dev_err(di->dev, "invalid battery:charge-full-design-microamp-hours %d\n",
1463 info.charge_full_design_uah);
1464 info.charge_full_design_uah = -EINVAL;
1467 min = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].min;
1468 max = di->dm_regs[BQ27XXX_DM_TERMINATE_VOLTAGE].max;
1469 if ((info.voltage_min_design_uv < min * 1000 ||
1470 info.voltage_min_design_uv > max * 1000) &&
1471 info.voltage_min_design_uv != -EINVAL) {
1472 dev_err(di->dev, "invalid battery:voltage-min-design-microvolt %d\n",
1473 info.voltage_min_design_uv);
1474 info.voltage_min_design_uv = -EINVAL;
1477 if ((info.energy_full_design_uwh != -EINVAL &&
1478 info.charge_full_design_uah != -EINVAL) ||
1479 info.voltage_min_design_uv != -EINVAL)
1480 bq27xxx_battery_set_config(di, &info);
1484 * Return the battery State-of-Charge
1485 * Or < 0 if something fails.
1487 static int bq27xxx_battery_read_soc(struct bq27xxx_device_info *di)
1491 if (di->opts & BQ27XXX_O_SOC_SI)
1492 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, true);
1494 soc = bq27xxx_read(di, BQ27XXX_REG_SOC, false);
1497 dev_dbg(di->dev, "error reading State-of-Charge\n");
1503 * Return a battery charge value in µAh
1504 * Or < 0 if something fails.
1506 static int bq27xxx_battery_read_charge(struct bq27xxx_device_info *di, u8 reg)
1510 charge = bq27xxx_read(di, reg, false);
1512 dev_dbg(di->dev, "error reading charge register %02x: %d\n",
1517 if (di->opts & BQ27XXX_O_ZERO)
1518 charge *= BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1526 * Return the battery Nominal available capacity in µAh
1527 * Or < 0 if something fails.
1529 static inline int bq27xxx_battery_read_nac(struct bq27xxx_device_info *di)
1533 if (di->opts & BQ27XXX_O_ZERO) {
1534 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true);
1535 if (flags >= 0 && (flags & BQ27000_FLAG_CI))
1539 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_NAC);
1543 * Return the battery Remaining Capacity in µAh
1544 * Or < 0 if something fails.
1546 static inline int bq27xxx_battery_read_rc(struct bq27xxx_device_info *di)
1548 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_RC);
1552 * Return the battery Full Charge Capacity in µAh
1553 * Or < 0 if something fails.
1555 static inline int bq27xxx_battery_read_fcc(struct bq27xxx_device_info *di)
1557 return bq27xxx_battery_read_charge(di, BQ27XXX_REG_FCC);
1561 * Return the Design Capacity in µAh
1562 * Or < 0 if something fails.
1564 static int bq27xxx_battery_read_dcap(struct bq27xxx_device_info *di)
1568 if (di->opts & BQ27XXX_O_ZERO)
1569 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, true);
1571 dcap = bq27xxx_read(di, BQ27XXX_REG_DCAP, false);
1574 dev_dbg(di->dev, "error reading initial last measured discharge\n");
1578 if (di->opts & BQ27XXX_O_ZERO)
1579 dcap = (dcap << 8) * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1587 * Return the battery Available energy in µWh
1588 * Or < 0 if something fails.
1590 static int bq27xxx_battery_read_energy(struct bq27xxx_device_info *di)
1594 ae = bq27xxx_read(di, BQ27XXX_REG_AE, false);
1596 dev_dbg(di->dev, "error reading available energy\n");
1600 if (di->opts & BQ27XXX_O_ZERO)
1601 ae *= BQ27XXX_POWER_CONSTANT / BQ27XXX_RS;
1609 * Return the battery temperature in tenths of degree Kelvin
1610 * Or < 0 if something fails.
1612 static int bq27xxx_battery_read_temperature(struct bq27xxx_device_info *di)
1616 temp = bq27xxx_read(di, BQ27XXX_REG_TEMP, false);
1618 dev_err(di->dev, "error reading temperature\n");
1622 if (di->opts & BQ27XXX_O_ZERO)
1623 temp = 5 * temp / 2;
1629 * Return the battery Cycle count total
1630 * Or < 0 if something fails.
1632 static int bq27xxx_battery_read_cyct(struct bq27xxx_device_info *di)
1636 cyct = bq27xxx_read(di, BQ27XXX_REG_CYCT, false);
1638 dev_err(di->dev, "error reading cycle count total\n");
1644 * Read a time register.
1645 * Return < 0 if something fails.
1647 static int bq27xxx_battery_read_time(struct bq27xxx_device_info *di, u8 reg)
1651 tval = bq27xxx_read(di, reg, false);
1653 dev_dbg(di->dev, "error reading time register %02x: %d\n",
1665 * Read an average power register.
1666 * Return < 0 if something fails.
1668 static int bq27xxx_battery_read_pwr_avg(struct bq27xxx_device_info *di)
1672 tval = bq27xxx_read(di, BQ27XXX_REG_AP, false);
1674 dev_err(di->dev, "error reading average power register %02x: %d\n",
1675 BQ27XXX_REG_AP, tval);
1679 if (di->opts & BQ27XXX_O_ZERO)
1680 return (tval * BQ27XXX_POWER_CONSTANT) / BQ27XXX_RS;
1686 * Returns true if a battery over temperature condition is detected
1688 static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags)
1690 if (di->opts & BQ27XXX_O_OTDC)
1691 return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD);
1692 if (di->opts & BQ27XXX_O_UTOT)
1693 return flags & BQ27XXX_FLAG_OT;
1699 * Returns true if a battery under temperature condition is detected
1701 static bool bq27xxx_battery_undertemp(struct bq27xxx_device_info *di, u16 flags)
1703 if (di->opts & BQ27XXX_O_UTOT)
1704 return flags & BQ27XXX_FLAG_UT;
1710 * Returns true if a low state of charge condition is detected
1712 static bool bq27xxx_battery_dead(struct bq27xxx_device_info *di, u16 flags)
1714 if (di->opts & BQ27XXX_O_ZERO)
1715 return flags & (BQ27000_FLAG_EDV1 | BQ27000_FLAG_EDVF);
1716 else if (di->opts & BQ27Z561_O_BITS)
1717 return flags & BQ27Z561_FLAG_FDC;
1719 return flags & (BQ27XXX_FLAG_SOC1 | BQ27XXX_FLAG_SOCF);
1722 static int bq27xxx_battery_read_health(struct bq27xxx_device_info *di)
1724 /* Unlikely but important to return first */
1725 if (unlikely(bq27xxx_battery_overtemp(di, di->cache.flags)))
1726 return POWER_SUPPLY_HEALTH_OVERHEAT;
1727 if (unlikely(bq27xxx_battery_undertemp(di, di->cache.flags)))
1728 return POWER_SUPPLY_HEALTH_COLD;
1729 if (unlikely(bq27xxx_battery_dead(di, di->cache.flags)))
1730 return POWER_SUPPLY_HEALTH_DEAD;
1732 return POWER_SUPPLY_HEALTH_GOOD;
1735 void bq27xxx_battery_update(struct bq27xxx_device_info *di)
1737 struct bq27xxx_reg_cache cache = {0, };
1738 bool has_ci_flag = di->opts & BQ27XXX_O_HAS_CI;
1739 bool has_singe_flag = di->opts & BQ27XXX_O_ZERO;
1741 cache.flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, has_singe_flag);
1742 if ((cache.flags & 0xff) == 0xff)
1743 cache.flags = -1; /* read error */
1744 if (cache.flags >= 0) {
1745 cache.temperature = bq27xxx_battery_read_temperature(di);
1746 if (has_ci_flag && (cache.flags & BQ27000_FLAG_CI)) {
1747 dev_info_once(di->dev, "battery is not calibrated! ignoring capacity values\n");
1748 cache.capacity = -ENODATA;
1749 cache.energy = -ENODATA;
1750 cache.time_to_empty = -ENODATA;
1751 cache.time_to_empty_avg = -ENODATA;
1752 cache.time_to_full = -ENODATA;
1753 cache.charge_full = -ENODATA;
1754 cache.health = -ENODATA;
1756 if (di->regs[BQ27XXX_REG_TTE] != INVALID_REG_ADDR)
1757 cache.time_to_empty = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTE);
1758 if (di->regs[BQ27XXX_REG_TTECP] != INVALID_REG_ADDR)
1759 cache.time_to_empty_avg = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTECP);
1760 if (di->regs[BQ27XXX_REG_TTF] != INVALID_REG_ADDR)
1761 cache.time_to_full = bq27xxx_battery_read_time(di, BQ27XXX_REG_TTF);
1763 cache.charge_full = bq27xxx_battery_read_fcc(di);
1764 cache.capacity = bq27xxx_battery_read_soc(di);
1765 if (di->regs[BQ27XXX_REG_AE] != INVALID_REG_ADDR)
1766 cache.energy = bq27xxx_battery_read_energy(di);
1767 di->cache.flags = cache.flags;
1768 cache.health = bq27xxx_battery_read_health(di);
1770 if (di->regs[BQ27XXX_REG_CYCT] != INVALID_REG_ADDR)
1771 cache.cycle_count = bq27xxx_battery_read_cyct(di);
1772 if (di->regs[BQ27XXX_REG_AP] != INVALID_REG_ADDR)
1773 cache.power_avg = bq27xxx_battery_read_pwr_avg(di);
1775 /* We only have to read charge design full once */
1776 if (di->charge_design_full <= 0)
1777 di->charge_design_full = bq27xxx_battery_read_dcap(di);
1780 if ((di->cache.capacity != cache.capacity) ||
1781 (di->cache.flags != cache.flags))
1782 power_supply_changed(di->bat);
1784 if (memcmp(&di->cache, &cache, sizeof(cache)) != 0)
1787 di->last_update = jiffies;
1789 EXPORT_SYMBOL_GPL(bq27xxx_battery_update);
1791 static void bq27xxx_battery_poll(struct work_struct *work)
1793 struct bq27xxx_device_info *di =
1794 container_of(work, struct bq27xxx_device_info,
1797 bq27xxx_battery_update(di);
1799 if (poll_interval > 0)
1800 schedule_delayed_work(&di->work, poll_interval * HZ);
1804 * Return the battery average current in µA
1805 * Note that current can be negative signed as well
1806 * Or 0 if something fails.
1808 static int bq27xxx_battery_current(struct bq27xxx_device_info *di,
1809 union power_supply_propval *val)
1814 curr = bq27xxx_read(di, BQ27XXX_REG_AI, false);
1816 dev_err(di->dev, "error reading current\n");
1820 if (di->opts & BQ27XXX_O_ZERO) {
1821 flags = bq27xxx_read(di, BQ27XXX_REG_FLAGS, true);
1822 if (!(flags & BQ27000_FLAG_CHGS)) {
1823 dev_dbg(di->dev, "negative current!\n");
1827 val->intval = curr * BQ27XXX_CURRENT_CONSTANT / BQ27XXX_RS;
1829 /* Other gauges return signed value */
1830 val->intval = -(int)((s16)curr) * 1000;
1836 static int bq27xxx_battery_status(struct bq27xxx_device_info *di,
1837 union power_supply_propval *val)
1841 if (di->opts & BQ27XXX_O_ZERO) {
1842 if (di->cache.flags & BQ27000_FLAG_FC)
1843 status = POWER_SUPPLY_STATUS_FULL;
1844 else if (di->cache.flags & BQ27000_FLAG_CHGS)
1845 status = POWER_SUPPLY_STATUS_CHARGING;
1847 status = POWER_SUPPLY_STATUS_DISCHARGING;
1848 } else if (di->opts & BQ27Z561_O_BITS) {
1849 if (di->cache.flags & BQ27Z561_FLAG_FC)
1850 status = POWER_SUPPLY_STATUS_FULL;
1851 else if (di->cache.flags & BQ27Z561_FLAG_DIS_CH)
1852 status = POWER_SUPPLY_STATUS_DISCHARGING;
1854 status = POWER_SUPPLY_STATUS_CHARGING;
1856 if (di->cache.flags & BQ27XXX_FLAG_FC)
1857 status = POWER_SUPPLY_STATUS_FULL;
1858 else if (di->cache.flags & BQ27XXX_FLAG_DSC)
1859 status = POWER_SUPPLY_STATUS_DISCHARGING;
1861 status = POWER_SUPPLY_STATUS_CHARGING;
1864 if ((status == POWER_SUPPLY_STATUS_DISCHARGING) &&
1865 (power_supply_am_i_supplied(di->bat) > 0))
1866 status = POWER_SUPPLY_STATUS_NOT_CHARGING;
1868 val->intval = status;
1873 static int bq27xxx_battery_capacity_level(struct bq27xxx_device_info *di,
1874 union power_supply_propval *val)
1878 if (di->opts & BQ27XXX_O_ZERO) {
1879 if (di->cache.flags & BQ27000_FLAG_FC)
1880 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1881 else if (di->cache.flags & BQ27000_FLAG_EDV1)
1882 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
1883 else if (di->cache.flags & BQ27000_FLAG_EDVF)
1884 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1886 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1887 } else if (di->opts & BQ27Z561_O_BITS) {
1888 if (di->cache.flags & BQ27Z561_FLAG_FC)
1889 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1890 else if (di->cache.flags & BQ27Z561_FLAG_FDC)
1891 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1893 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1895 if (di->cache.flags & BQ27XXX_FLAG_FC)
1896 level = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
1897 else if (di->cache.flags & BQ27XXX_FLAG_SOC1)
1898 level = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
1899 else if (di->cache.flags & BQ27XXX_FLAG_SOCF)
1900 level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
1902 level = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
1905 val->intval = level;
1911 * Return the battery Voltage in millivolts
1912 * Or < 0 if something fails.
1914 static int bq27xxx_battery_voltage(struct bq27xxx_device_info *di,
1915 union power_supply_propval *val)
1919 volt = bq27xxx_read(di, BQ27XXX_REG_VOLT, false);
1921 dev_err(di->dev, "error reading voltage\n");
1925 val->intval = volt * 1000;
1930 static int bq27xxx_simple_value(int value,
1931 union power_supply_propval *val)
1936 val->intval = value;
1941 static int bq27xxx_battery_get_property(struct power_supply *psy,
1942 enum power_supply_property psp,
1943 union power_supply_propval *val)
1946 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
1948 mutex_lock(&di->lock);
1949 if (time_is_before_jiffies(di->last_update + 5 * HZ)) {
1950 cancel_delayed_work_sync(&di->work);
1951 bq27xxx_battery_poll(&di->work.work);
1953 mutex_unlock(&di->lock);
1955 if (psp != POWER_SUPPLY_PROP_PRESENT && di->cache.flags < 0)
1959 case POWER_SUPPLY_PROP_STATUS:
1960 ret = bq27xxx_battery_status(di, val);
1962 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
1963 ret = bq27xxx_battery_voltage(di, val);
1965 case POWER_SUPPLY_PROP_PRESENT:
1966 val->intval = di->cache.flags < 0 ? 0 : 1;
1968 case POWER_SUPPLY_PROP_CURRENT_NOW:
1969 ret = bq27xxx_battery_current(di, val);
1971 case POWER_SUPPLY_PROP_CAPACITY:
1972 ret = bq27xxx_simple_value(di->cache.capacity, val);
1974 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
1975 ret = bq27xxx_battery_capacity_level(di, val);
1977 case POWER_SUPPLY_PROP_TEMP:
1978 ret = bq27xxx_simple_value(di->cache.temperature, val);
1980 val->intval -= 2731; /* convert decidegree k to c */
1982 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
1983 ret = bq27xxx_simple_value(di->cache.time_to_empty, val);
1985 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
1986 ret = bq27xxx_simple_value(di->cache.time_to_empty_avg, val);
1988 case POWER_SUPPLY_PROP_TIME_TO_FULL_NOW:
1989 ret = bq27xxx_simple_value(di->cache.time_to_full, val);
1991 case POWER_SUPPLY_PROP_TECHNOLOGY:
1992 if (di->opts & BQ27XXX_O_MUL_CHEM)
1993 val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
1995 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
1997 case POWER_SUPPLY_PROP_CHARGE_NOW:
1998 if (di->regs[BQ27XXX_REG_NAC] != INVALID_REG_ADDR)
1999 ret = bq27xxx_simple_value(bq27xxx_battery_read_nac(di), val);
2001 ret = bq27xxx_simple_value(bq27xxx_battery_read_rc(di), val);
2003 case POWER_SUPPLY_PROP_CHARGE_FULL:
2004 ret = bq27xxx_simple_value(di->cache.charge_full, val);
2006 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
2007 ret = bq27xxx_simple_value(di->charge_design_full, val);
2010 * TODO: Implement these to make registers set from
2011 * power_supply_battery_info visible in sysfs.
2013 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
2014 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
2016 case POWER_SUPPLY_PROP_CYCLE_COUNT:
2017 ret = bq27xxx_simple_value(di->cache.cycle_count, val);
2019 case POWER_SUPPLY_PROP_ENERGY_NOW:
2020 ret = bq27xxx_simple_value(di->cache.energy, val);
2022 case POWER_SUPPLY_PROP_POWER_AVG:
2023 ret = bq27xxx_simple_value(di->cache.power_avg, val);
2025 case POWER_SUPPLY_PROP_HEALTH:
2026 ret = bq27xxx_simple_value(di->cache.health, val);
2028 case POWER_SUPPLY_PROP_MANUFACTURER:
2029 val->strval = BQ27XXX_MANUFACTURER;
2038 static void bq27xxx_external_power_changed(struct power_supply *psy)
2040 struct bq27xxx_device_info *di = power_supply_get_drvdata(psy);
2042 cancel_delayed_work_sync(&di->work);
2043 schedule_delayed_work(&di->work, 0);
2046 int bq27xxx_battery_setup(struct bq27xxx_device_info *di)
2048 struct power_supply_desc *psy_desc;
2049 struct power_supply_config psy_cfg = {
2050 .of_node = di->dev->of_node,
2054 INIT_DELAYED_WORK(&di->work, bq27xxx_battery_poll);
2055 mutex_init(&di->lock);
2057 di->regs = bq27xxx_chip_data[di->chip].regs;
2058 di->unseal_key = bq27xxx_chip_data[di->chip].unseal_key;
2059 di->dm_regs = bq27xxx_chip_data[di->chip].dm_regs;
2060 di->opts = bq27xxx_chip_data[di->chip].opts;
2062 psy_desc = devm_kzalloc(di->dev, sizeof(*psy_desc), GFP_KERNEL);
2066 psy_desc->name = di->name;
2067 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
2068 psy_desc->properties = bq27xxx_chip_data[di->chip].props;
2069 psy_desc->num_properties = bq27xxx_chip_data[di->chip].props_size;
2070 psy_desc->get_property = bq27xxx_battery_get_property;
2071 psy_desc->external_power_changed = bq27xxx_external_power_changed;
2073 di->bat = power_supply_register_no_ws(di->dev, psy_desc, &psy_cfg);
2074 if (IS_ERR(di->bat))
2075 return dev_err_probe(di->dev, PTR_ERR(di->bat),
2076 "failed to register battery\n");
2078 bq27xxx_battery_settings(di);
2079 bq27xxx_battery_update(di);
2081 mutex_lock(&bq27xxx_list_lock);
2082 list_add(&di->list, &bq27xxx_battery_devices);
2083 mutex_unlock(&bq27xxx_list_lock);
2087 EXPORT_SYMBOL_GPL(bq27xxx_battery_setup);
2089 void bq27xxx_battery_teardown(struct bq27xxx_device_info *di)
2092 * power_supply_unregister call bq27xxx_battery_get_property which
2093 * call bq27xxx_battery_poll.
2094 * Make sure that bq27xxx_battery_poll will not call
2095 * schedule_delayed_work again after unregister (which cause OOPS).
2099 cancel_delayed_work_sync(&di->work);
2101 power_supply_unregister(di->bat);
2103 mutex_lock(&bq27xxx_list_lock);
2104 list_del(&di->list);
2105 mutex_unlock(&bq27xxx_list_lock);
2107 mutex_destroy(&di->lock);
2109 EXPORT_SYMBOL_GPL(bq27xxx_battery_teardown);
2111 MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
2112 MODULE_DESCRIPTION("BQ27xxx battery monitor driver");
2113 MODULE_LICENSE("GPL");