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-rw-r--r--drivers/power/Kconfig23
-rw-r--r--drivers/power/Makefile19
-rw-r--r--drivers/power/bq20z75.c493
-rw-r--r--drivers/power/bq27x00_battery.c1
-rw-r--r--drivers/power/ds2760_battery.c1
-rw-r--r--drivers/power/ds2782_battery.c12
-rw-r--r--drivers/power/isp1704_charger.c369
-rw-r--r--drivers/power/jz4740-battery.c1
-rw-r--r--drivers/power/olpc_battery.c8
-rw-r--r--drivers/power/pcf50633-charger.c1
-rw-r--r--drivers/power/power_supply_sysfs.c4
-rw-r--r--drivers/power/twl4030_charger.c565
-rw-r--r--drivers/power/wm831x_power.c2
13 files changed, 1473 insertions, 26 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 07343568a12e..60d83d983a36 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -64,8 +64,7 @@ config TEST_POWER
64 64
65config BATTERY_DS2760 65config BATTERY_DS2760
66 tristate "DS2760 battery driver (HP iPAQ & others)" 66 tristate "DS2760 battery driver (HP iPAQ & others)"
67 select W1 67 depends on W1 && W1_SLAVE_DS2760
68 select W1_SLAVE_DS2760
69 help 68 help
70 Say Y here to enable support for batteries with ds2760 chip. 69 Say Y here to enable support for batteries with ds2760 chip.
71 70
@@ -109,6 +108,13 @@ config BATTERY_WM97XX
109 help 108 help
110 Say Y to enable support for battery measured by WM97xx aux port. 109 Say Y to enable support for battery measured by WM97xx aux port.
111 110
111config BATTERY_BQ20Z75
112 tristate "TI BQ20z75 gas gauge"
113 depends on I2C
114 help
115 Say Y to include support for TI BQ20z75 SBS-compliant
116 gas gauge and protection IC.
117
112config BATTERY_BQ27x00 118config BATTERY_BQ27x00
113 tristate "BQ27x00 battery driver" 119 tristate "BQ27x00 battery driver"
114 depends on I2C 120 depends on I2C
@@ -166,4 +172,17 @@ config BATTERY_INTEL_MID
166 Say Y here to enable the battery driver on Intel MID 172 Say Y here to enable the battery driver on Intel MID
167 platforms. 173 platforms.
168 174
175config CHARGER_ISP1704
176 tristate "ISP1704 USB Charger Detection"
177 depends on USB_OTG_UTILS
178 help
179 Say Y to enable support for USB Charger Detection with
180 ISP1707/ISP1704 USB transceivers.
181
182config CHARGER_TWL4030
183 tristate "OMAP TWL4030 BCI charger driver"
184 depends on TWL4030_CORE
185 help
186 Say Y here to enable support for TWL4030 Battery Charge Interface.
187
169endif # POWER_SUPPLY 188endif # POWER_SUPPLY
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 10143aaf4ee3..c75772eb157c 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -1,16 +1,8 @@
1power_supply-objs := power_supply_core.o 1ccflags-$(CONFIG_POWER_SUPPLY_DEBUG) := -DDEBUG
2 2
3ifeq ($(CONFIG_SYSFS),y) 3power_supply-y := power_supply_core.o
4power_supply-objs += power_supply_sysfs.o 4power_supply-$(CONFIG_SYSFS) += power_supply_sysfs.o
5endif 5power_supply-$(CONFIG_LEDS_TRIGGERS) += power_supply_leds.o
6
7ifeq ($(CONFIG_LEDS_TRIGGERS),y)
8power_supply-objs += power_supply_leds.o
9endif
10
11ifeq ($(CONFIG_POWER_SUPPLY_DEBUG),y)
12EXTRA_CFLAGS += -DDEBUG
13endif
14 6
15obj-$(CONFIG_POWER_SUPPLY) += power_supply.o 7obj-$(CONFIG_POWER_SUPPLY) += power_supply.o
16 8
@@ -29,6 +21,7 @@ obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
29obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o 21obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
30obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o 22obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
31obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o 23obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
24obj-$(CONFIG_BATTERY_BQ20Z75) += bq20z75.o
32obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o 25obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
33obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o 26obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
34obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o 27obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
@@ -37,3 +30,5 @@ obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
37obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o 30obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
38obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o 31obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
39obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o 32obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
33obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
34obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
diff --git a/drivers/power/bq20z75.c b/drivers/power/bq20z75.c
new file mode 100644
index 000000000000..492da27e1a47
--- /dev/null
+++ b/drivers/power/bq20z75.c
@@ -0,0 +1,493 @@
1/*
2 * Gas Gauge driver for TI's BQ20Z75
3 *
4 * Copyright (c) 2010, NVIDIA Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20
21#include <linux/init.h>
22#include <linux/module.h>
23#include <linux/kernel.h>
24#include <linux/err.h>
25#include <linux/power_supply.h>
26#include <linux/i2c.h>
27#include <linux/slab.h>
28
29enum {
30 REG_MANUFACTURER_DATA,
31 REG_TEMPERATURE,
32 REG_VOLTAGE,
33 REG_CURRENT,
34 REG_CAPACITY,
35 REG_TIME_TO_EMPTY,
36 REG_TIME_TO_FULL,
37 REG_STATUS,
38 REG_CYCLE_COUNT,
39 REG_SERIAL_NUMBER,
40 REG_REMAINING_CAPACITY,
41 REG_FULL_CHARGE_CAPACITY,
42 REG_DESIGN_CAPACITY,
43 REG_DESIGN_VOLTAGE,
44};
45
46/* manufacturer access defines */
47#define MANUFACTURER_ACCESS_STATUS 0x0006
48#define MANUFACTURER_ACCESS_SLEEP 0x0011
49
50/* battery status value bits */
51#define BATTERY_DISCHARGING 0x40
52#define BATTERY_FULL_CHARGED 0x20
53#define BATTERY_FULL_DISCHARGED 0x10
54
55#define BQ20Z75_DATA(_psp, _addr, _min_value, _max_value) { \
56 .psp = _psp, \
57 .addr = _addr, \
58 .min_value = _min_value, \
59 .max_value = _max_value, \
60}
61
62static const struct bq20z75_device_data {
63 enum power_supply_property psp;
64 u8 addr;
65 int min_value;
66 int max_value;
67} bq20z75_data[] = {
68 [REG_MANUFACTURER_DATA] =
69 BQ20Z75_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535),
70 [REG_TEMPERATURE] =
71 BQ20Z75_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535),
72 [REG_VOLTAGE] =
73 BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_NOW, 0x09, 0, 20000),
74 [REG_CURRENT] =
75 BQ20Z75_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768,
76 32767),
77 [REG_CAPACITY] =
78 BQ20Z75_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
79 [REG_REMAINING_CAPACITY] =
80 BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
81 [REG_FULL_CHARGE_CAPACITY] =
82 BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL, 0x10, 0, 65535),
83 [REG_TIME_TO_EMPTY] =
84 BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, 0x12, 0,
85 65535),
86 [REG_TIME_TO_FULL] =
87 BQ20Z75_DATA(POWER_SUPPLY_PROP_TIME_TO_FULL_AVG, 0x13, 0,
88 65535),
89 [REG_STATUS] =
90 BQ20Z75_DATA(POWER_SUPPLY_PROP_STATUS, 0x16, 0, 65535),
91 [REG_CYCLE_COUNT] =
92 BQ20Z75_DATA(POWER_SUPPLY_PROP_CYCLE_COUNT, 0x17, 0, 65535),
93 [REG_DESIGN_CAPACITY] =
94 BQ20Z75_DATA(POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN, 0x18, 0,
95 65535),
96 [REG_DESIGN_VOLTAGE] =
97 BQ20Z75_DATA(POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN, 0x19, 0,
98 65535),
99 [REG_SERIAL_NUMBER] =
100 BQ20Z75_DATA(POWER_SUPPLY_PROP_SERIAL_NUMBER, 0x1C, 0, 65535),
101};
102
103static enum power_supply_property bq20z75_properties[] = {
104 POWER_SUPPLY_PROP_STATUS,
105 POWER_SUPPLY_PROP_HEALTH,
106 POWER_SUPPLY_PROP_PRESENT,
107 POWER_SUPPLY_PROP_TECHNOLOGY,
108 POWER_SUPPLY_PROP_CYCLE_COUNT,
109 POWER_SUPPLY_PROP_VOLTAGE_NOW,
110 POWER_SUPPLY_PROP_CURRENT_NOW,
111 POWER_SUPPLY_PROP_CAPACITY,
112 POWER_SUPPLY_PROP_TEMP,
113 POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG,
114 POWER_SUPPLY_PROP_TIME_TO_FULL_AVG,
115 POWER_SUPPLY_PROP_SERIAL_NUMBER,
116 POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
117 POWER_SUPPLY_PROP_ENERGY_NOW,
118 POWER_SUPPLY_PROP_ENERGY_FULL,
119 POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
120};
121
122struct bq20z75_info {
123 struct i2c_client *client;
124 struct power_supply power_supply;
125};
126
127static int bq20z75_read_word_data(struct i2c_client *client, u8 address)
128{
129 s32 ret;
130
131 ret = i2c_smbus_read_word_data(client, address);
132 if (ret < 0) {
133 dev_err(&client->dev,
134 "%s: i2c read at address 0x%x failed\n",
135 __func__, address);
136 return ret;
137 }
138 return le16_to_cpu(ret);
139}
140
141static int bq20z75_write_word_data(struct i2c_client *client, u8 address,
142 u16 value)
143{
144 s32 ret;
145
146 ret = i2c_smbus_write_word_data(client, address, le16_to_cpu(value));
147 if (ret < 0) {
148 dev_err(&client->dev,
149 "%s: i2c write to address 0x%x failed\n",
150 __func__, address);
151 return ret;
152 }
153 return 0;
154}
155
156static int bq20z75_get_battery_presence_and_health(
157 struct i2c_client *client, enum power_supply_property psp,
158 union power_supply_propval *val)
159{
160 s32 ret;
161
162 /* Write to ManufacturerAccess with
163 * ManufacturerAccess command and then
164 * read the status */
165 ret = bq20z75_write_word_data(client,
166 bq20z75_data[REG_MANUFACTURER_DATA].addr,
167 MANUFACTURER_ACCESS_STATUS);
168 if (ret < 0)
169 return ret;
170
171
172 ret = bq20z75_read_word_data(client,
173 bq20z75_data[REG_MANUFACTURER_DATA].addr);
174 if (ret < 0)
175 return ret;
176
177 if (ret < bq20z75_data[REG_MANUFACTURER_DATA].min_value ||
178 ret > bq20z75_data[REG_MANUFACTURER_DATA].max_value) {
179 val->intval = 0;
180 return 0;
181 }
182
183 /* Mask the upper nibble of 2nd byte and
184 * lower byte of response then
185 * shift the result by 8 to get status*/
186 ret &= 0x0F00;
187 ret >>= 8;
188 if (psp == POWER_SUPPLY_PROP_PRESENT) {
189 if (ret == 0x0F)
190 /* battery removed */
191 val->intval = 0;
192 else
193 val->intval = 1;
194 } else if (psp == POWER_SUPPLY_PROP_HEALTH) {
195 if (ret == 0x09)
196 val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
197 else if (ret == 0x0B)
198 val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
199 else if (ret == 0x0C)
200 val->intval = POWER_SUPPLY_HEALTH_DEAD;
201 else
202 val->intval = POWER_SUPPLY_HEALTH_GOOD;
203 }
204
205 return 0;
206}
207
208static int bq20z75_get_battery_property(struct i2c_client *client,
209 int reg_offset, enum power_supply_property psp,
210 union power_supply_propval *val)
211{
212 s32 ret;
213
214 ret = bq20z75_read_word_data(client,
215 bq20z75_data[reg_offset].addr);
216 if (ret < 0)
217 return ret;
218
219 /* returned values are 16 bit */
220 if (bq20z75_data[reg_offset].min_value < 0)
221 ret = (s16)ret;
222
223 if (ret >= bq20z75_data[reg_offset].min_value &&
224 ret <= bq20z75_data[reg_offset].max_value) {
225 val->intval = ret;
226 if (psp == POWER_SUPPLY_PROP_STATUS) {
227 if (ret & BATTERY_FULL_CHARGED)
228 val->intval = POWER_SUPPLY_STATUS_FULL;
229 else if (ret & BATTERY_FULL_DISCHARGED)
230 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
231 else if (ret & BATTERY_DISCHARGING)
232 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
233 else
234 val->intval = POWER_SUPPLY_STATUS_CHARGING;
235 }
236 } else {
237 if (psp == POWER_SUPPLY_PROP_STATUS)
238 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
239 else
240 val->intval = 0;
241 }
242
243 return 0;
244}
245
246static void bq20z75_unit_adjustment(struct i2c_client *client,
247 enum power_supply_property psp, union power_supply_propval *val)
248{
249#define BASE_UNIT_CONVERSION 1000
250#define BATTERY_MODE_CAP_MULT_WATT (10 * BASE_UNIT_CONVERSION)
251#define TIME_UNIT_CONVERSION 600
252#define TEMP_KELVIN_TO_CELCIUS 2731
253 switch (psp) {
254 case POWER_SUPPLY_PROP_ENERGY_NOW:
255 case POWER_SUPPLY_PROP_ENERGY_FULL:
256 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
257 val->intval *= BATTERY_MODE_CAP_MULT_WATT;
258 break;
259
260 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
261 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
262 case POWER_SUPPLY_PROP_CURRENT_NOW:
263 val->intval *= BASE_UNIT_CONVERSION;
264 break;
265
266 case POWER_SUPPLY_PROP_TEMP:
267 /* bq20z75 provides battery tempreture in 0.1°K
268 * so convert it to 0.1°C */
269 val->intval -= TEMP_KELVIN_TO_CELCIUS;
270 val->intval *= 10;
271 break;
272
273 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
274 case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
275 val->intval *= TIME_UNIT_CONVERSION;
276 break;
277
278 default:
279 dev_dbg(&client->dev,
280 "%s: no need for unit conversion %d\n", __func__, psp);
281 }
282}
283
284static int bq20z75_get_battery_capacity(struct i2c_client *client,
285 int reg_offset, enum power_supply_property psp,
286 union power_supply_propval *val)
287{
288 s32 ret;
289
290 ret = bq20z75_read_word_data(client, bq20z75_data[reg_offset].addr);
291 if (ret < 0)
292 return ret;
293
294 if (psp == POWER_SUPPLY_PROP_CAPACITY) {
295 /* bq20z75 spec says that this can be >100 %
296 * even if max value is 100 % */
297 val->intval = min(ret, 100);
298 } else
299 val->intval = ret;
300
301 return 0;
302}
303
304static char bq20z75_serial[5];
305static int bq20z75_get_battery_serial_number(struct i2c_client *client,
306 union power_supply_propval *val)
307{
308 int ret;
309
310 ret = bq20z75_read_word_data(client,
311 bq20z75_data[REG_SERIAL_NUMBER].addr);
312 if (ret < 0)
313 return ret;
314
315 ret = sprintf(bq20z75_serial, "%04x", ret);
316 val->strval = bq20z75_serial;
317
318 return 0;
319}
320
321static int bq20z75_get_property(struct power_supply *psy,
322 enum power_supply_property psp,
323 union power_supply_propval *val)
324{
325 int count;
326 int ret;
327 struct bq20z75_info *bq20z75_device = container_of(psy,
328 struct bq20z75_info, power_supply);
329 struct i2c_client *client = bq20z75_device->client;
330
331 switch (psp) {
332 case POWER_SUPPLY_PROP_PRESENT:
333 case POWER_SUPPLY_PROP_HEALTH:
334 ret = bq20z75_get_battery_presence_and_health(client, psp, val);
335 if (ret)
336 return ret;
337 break;
338
339 case POWER_SUPPLY_PROP_TECHNOLOGY:
340 val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
341 break;
342
343 case POWER_SUPPLY_PROP_ENERGY_NOW:
344 case POWER_SUPPLY_PROP_ENERGY_FULL:
345 case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
346 case POWER_SUPPLY_PROP_CAPACITY:
347 for (count = 0; count < ARRAY_SIZE(bq20z75_data); count++) {
348 if (psp == bq20z75_data[count].psp)
349 break;
350 }
351
352 ret = bq20z75_get_battery_capacity(client, count, psp, val);
353 if (ret)
354 return ret;
355
356 break;
357
358 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
359 ret = bq20z75_get_battery_serial_number(client, val);
360 if (ret)
361 return ret;
362 break;
363
364 case POWER_SUPPLY_PROP_STATUS:
365 case POWER_SUPPLY_PROP_CYCLE_COUNT:
366 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
367 case POWER_SUPPLY_PROP_CURRENT_NOW:
368 case POWER_SUPPLY_PROP_TEMP:
369 case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
370 case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
371 case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
372 for (count = 0; count < ARRAY_SIZE(bq20z75_data); count++) {
373 if (psp == bq20z75_data[count].psp)
374 break;
375 }
376
377 ret = bq20z75_get_battery_property(client, count, psp, val);
378 if (ret)
379 return ret;
380
381 break;
382
383 default:
384 dev_err(&client->dev,
385 "%s: INVALID property\n", __func__);
386 return -EINVAL;
387 }
388
389 /* Convert units to match requirements for power supply class */
390 bq20z75_unit_adjustment(client, psp, val);
391
392 dev_dbg(&client->dev,
393 "%s: property = %d, value = %d\n", __func__, psp, val->intval);
394
395 return 0;
396}
397
398static int bq20z75_probe(struct i2c_client *client,
399 const struct i2c_device_id *id)
400{
401 struct bq20z75_info *bq20z75_device;
402 int rc;
403
404 bq20z75_device = kzalloc(sizeof(struct bq20z75_info), GFP_KERNEL);
405 if (!bq20z75_device)
406 return -ENOMEM;
407
408 bq20z75_device->client = client;
409 bq20z75_device->power_supply.name = "battery";
410 bq20z75_device->power_supply.type = POWER_SUPPLY_TYPE_BATTERY;
411 bq20z75_device->power_supply.properties = bq20z75_properties;
412 bq20z75_device->power_supply.num_properties =
413 ARRAY_SIZE(bq20z75_properties);
414 bq20z75_device->power_supply.get_property = bq20z75_get_property;
415
416 i2c_set_clientdata(client, bq20z75_device);
417
418 rc = power_supply_register(&client->dev, &bq20z75_device->power_supply);
419 if (rc) {
420 dev_err(&client->dev,
421 "%s: Failed to register power supply\n", __func__);
422 kfree(bq20z75_device);
423 return rc;
424 }
425
426 dev_info(&client->dev,
427 "%s: battery gas gauge device registered\n", client->name);
428
429 return 0;
430}
431
432static int bq20z75_remove(struct i2c_client *client)
433{
434 struct bq20z75_info *bq20z75_device = i2c_get_clientdata(client);
435
436 power_supply_unregister(&bq20z75_device->power_supply);
437 kfree(bq20z75_device);
438 bq20z75_device = NULL;
439
440 return 0;
441}
442
443#if defined CONFIG_PM
444static int bq20z75_suspend(struct i2c_client *client,
445 pm_message_t state)
446{
447 s32 ret;
448
449 /* write to manufacturer access with sleep command */
450 ret = bq20z75_write_word_data(client,
451 bq20z75_data[REG_MANUFACTURER_DATA].addr,
452 MANUFACTURER_ACCESS_SLEEP);
453 if (ret < 0)
454 return ret;
455
456 return 0;
457}
458#else
459#define bq20z75_suspend NULL
460#endif
461/* any smbus transaction will wake up bq20z75 */
462#define bq20z75_resume NULL
463
464static const struct i2c_device_id bq20z75_id[] = {
465 { "bq20z75", 0 },
466 {}
467};
468
469static struct i2c_driver bq20z75_battery_driver = {
470 .probe = bq20z75_probe,
471 .remove = bq20z75_remove,
472 .suspend = bq20z75_suspend,
473 .resume = bq20z75_resume,
474 .id_table = bq20z75_id,
475 .driver = {
476 .name = "bq20z75-battery",
477 },
478};
479
480static int __init bq20z75_battery_init(void)
481{
482 return i2c_add_driver(&bq20z75_battery_driver);
483}
484module_init(bq20z75_battery_init);
485
486static void __exit bq20z75_battery_exit(void)
487{
488 i2c_del_driver(&bq20z75_battery_driver);
489}
490module_exit(bq20z75_battery_exit);
491
492MODULE_DESCRIPTION("BQ20z75 battery monitor driver");
493MODULE_LICENSE("GPL");
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 3ec9c6a8896b..eff0273d4030 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -418,6 +418,7 @@ static int bq27x00_battery_remove(struct i2c_client *client)
418 418
419 power_supply_unregister(&di->bat); 419 power_supply_unregister(&di->bat);
420 420
421 kfree(di->bus);
421 kfree(di->bat.name); 422 kfree(di->bat.name);
422 423
423 mutex_lock(&battery_mutex); 424 mutex_lock(&battery_mutex);
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 4d3b27228a2e..b3c01c16a164 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -586,6 +586,7 @@ static int ds2760_battery_remove(struct platform_device *pdev)
586 &di->set_charged_work); 586 &di->set_charged_work);
587 destroy_workqueue(di->monitor_wqueue); 587 destroy_workqueue(di->monitor_wqueue);
588 power_supply_unregister(&di->bat); 588 power_supply_unregister(&di->bat);
589 kfree(di);
589 590
590 return 0; 591 return 0;
591} 592}
diff --git a/drivers/power/ds2782_battery.c b/drivers/power/ds2782_battery.c
index 84d3c43cf2bc..6957e8af6449 100644
--- a/drivers/power/ds2782_battery.c
+++ b/drivers/power/ds2782_battery.c
@@ -44,8 +44,8 @@ struct ds278x_info;
44 44
45struct ds278x_battery_ops { 45struct ds278x_battery_ops {
46 int (*get_battery_current)(struct ds278x_info *info, int *current_uA); 46 int (*get_battery_current)(struct ds278x_info *info, int *current_uA);
47 int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uA); 47 int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uV);
48 int (*get_battery_capacity)(struct ds278x_info *info, int *capacity_uA); 48 int (*get_battery_capacity)(struct ds278x_info *info, int *capacity);
49}; 49};
50 50
51#define to_ds278x_info(x) container_of(x, struct ds278x_info, battery) 51#define to_ds278x_info(x) container_of(x, struct ds278x_info, battery)
@@ -137,7 +137,7 @@ static int ds2782_get_current(struct ds278x_info *info, int *current_uA)
137 return 0; 137 return 0;
138} 138}
139 139
140static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uA) 140static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uV)
141{ 141{
142 s16 raw; 142 s16 raw;
143 int err; 143 int err;
@@ -149,7 +149,7 @@ static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uA)
149 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw); 149 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
150 if (err) 150 if (err)
151 return err; 151 return err;
152 *voltage_uA = (raw / 32) * 4800; 152 *voltage_uV = (raw / 32) * 4800;
153 return 0; 153 return 0;
154} 154}
155 155
@@ -177,7 +177,7 @@ static int ds2786_get_current(struct ds278x_info *info, int *current_uA)
177 return 0; 177 return 0;
178} 178}
179 179
180static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uA) 180static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uV)
181{ 181{
182 s16 raw; 182 s16 raw;
183 int err; 183 int err;
@@ -189,7 +189,7 @@ static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uA)
189 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw); 189 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
190 if (err) 190 if (err)
191 return err; 191 return err;
192 *voltage_uA = (raw / 8) * 1220; 192 *voltage_uV = (raw / 8) * 1220;
193 return 0; 193 return 0;
194} 194}
195 195
diff --git a/drivers/power/isp1704_charger.c b/drivers/power/isp1704_charger.c
new file mode 100644
index 000000000000..72512185f3e2
--- /dev/null
+++ b/drivers/power/isp1704_charger.c
@@ -0,0 +1,369 @@
1/*
2 * ISP1704 USB Charger Detection driver
3 *
4 * Copyright (C) 2010 Nokia Corporation
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/err.h>
24#include <linux/init.h>
25#include <linux/types.h>
26#include <linux/device.h>
27#include <linux/sysfs.h>
28#include <linux/platform_device.h>
29#include <linux/power_supply.h>
30#include <linux/delay.h>
31
32#include <linux/usb/otg.h>
33#include <linux/usb/ulpi.h>
34#include <linux/usb/ch9.h>
35#include <linux/usb/gadget.h>
36
37/* Vendor specific Power Control register */
38#define ISP1704_PWR_CTRL 0x3d
39#define ISP1704_PWR_CTRL_SWCTRL (1 << 0)
40#define ISP1704_PWR_CTRL_DET_COMP (1 << 1)
41#define ISP1704_PWR_CTRL_BVALID_RISE (1 << 2)
42#define ISP1704_PWR_CTRL_BVALID_FALL (1 << 3)
43#define ISP1704_PWR_CTRL_DP_WKPU_EN (1 << 4)
44#define ISP1704_PWR_CTRL_VDAT_DET (1 << 5)
45#define ISP1704_PWR_CTRL_DPVSRC_EN (1 << 6)
46#define ISP1704_PWR_CTRL_HWDETECT (1 << 7)
47
48#define NXP_VENDOR_ID 0x04cc
49
50static u16 isp170x_id[] = {
51 0x1704,
52 0x1707,
53};
54
55struct isp1704_charger {
56 struct device *dev;
57 struct power_supply psy;
58 struct otg_transceiver *otg;
59 struct notifier_block nb;
60 struct work_struct work;
61
62 char model[7];
63 unsigned present:1;
64};
65
66/*
67 * ISP1704 detects PS/2 adapters as charger. To make sure the detected charger
68 * is actually a dedicated charger, the following steps need to be taken.
69 */
70static inline int isp1704_charger_verify(struct isp1704_charger *isp)
71{
72 int ret = 0;
73 u8 r;
74
75 /* Reset the transceiver */
76 r = otg_io_read(isp->otg, ULPI_FUNC_CTRL);
77 r |= ULPI_FUNC_CTRL_RESET;
78 otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
79 usleep_range(1000, 2000);
80
81 /* Set normal mode */
82 r &= ~(ULPI_FUNC_CTRL_RESET | ULPI_FUNC_CTRL_OPMODE_MASK);
83 otg_io_write(isp->otg, ULPI_FUNC_CTRL, r);
84
85 /* Clear the DP and DM pull-down bits */
86 r = ULPI_OTG_CTRL_DP_PULLDOWN | ULPI_OTG_CTRL_DM_PULLDOWN;
87 otg_io_write(isp->otg, ULPI_CLR(ULPI_OTG_CTRL), r);
88
89 /* Enable strong pull-up on DP (1.5K) and reset */
90 r = ULPI_FUNC_CTRL_TERMSELECT | ULPI_FUNC_CTRL_RESET;
91 otg_io_write(isp->otg, ULPI_SET(ULPI_FUNC_CTRL), r);
92 usleep_range(1000, 2000);
93
94 /* Read the line state */
95 if (!otg_io_read(isp->otg, ULPI_DEBUG)) {
96 /* Disable strong pull-up on DP (1.5K) */
97 otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
98 ULPI_FUNC_CTRL_TERMSELECT);
99 return 1;
100 }
101
102 /* Is it a charger or PS/2 connection */
103
104 /* Enable weak pull-up resistor on DP */
105 otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL),
106 ISP1704_PWR_CTRL_DP_WKPU_EN);
107
108 /* Disable strong pull-up on DP (1.5K) */
109 otg_io_write(isp->otg, ULPI_CLR(ULPI_FUNC_CTRL),
110 ULPI_FUNC_CTRL_TERMSELECT);
111
112 /* Enable weak pull-down resistor on DM */
113 otg_io_write(isp->otg, ULPI_SET(ULPI_OTG_CTRL),
114 ULPI_OTG_CTRL_DM_PULLDOWN);
115
116 /* It's a charger if the line states are clear */
117 if (!(otg_io_read(isp->otg, ULPI_DEBUG)))
118 ret = 1;
119
120 /* Disable weak pull-up resistor on DP */
121 otg_io_write(isp->otg, ULPI_CLR(ISP1704_PWR_CTRL),
122 ISP1704_PWR_CTRL_DP_WKPU_EN);
123
124 return ret;
125}
126
127static inline int isp1704_charger_detect(struct isp1704_charger *isp)
128{
129 unsigned long timeout;
130 u8 r;
131 int ret = 0;
132
133 /* set SW control bit in PWR_CTRL register */
134 otg_io_write(isp->otg, ISP1704_PWR_CTRL,
135 ISP1704_PWR_CTRL_SWCTRL);
136
137 /* enable manual charger detection */
138 r = (ISP1704_PWR_CTRL_SWCTRL | ISP1704_PWR_CTRL_DPVSRC_EN);
139 otg_io_write(isp->otg, ULPI_SET(ISP1704_PWR_CTRL), r);
140 usleep_range(1000, 2000);
141
142 timeout = jiffies + msecs_to_jiffies(300);
143 do {
144 /* Check if there is a charger */
145 if (otg_io_read(isp->otg, ISP1704_PWR_CTRL)
146 & ISP1704_PWR_CTRL_VDAT_DET) {
147 ret = isp1704_charger_verify(isp);
148 break;
149 }
150 } while (!time_after(jiffies, timeout));
151
152 return ret;
153}
154
155static void isp1704_charger_work(struct work_struct *data)
156{
157 int detect;
158 struct isp1704_charger *isp =
159 container_of(data, struct isp1704_charger, work);
160
161 /*
162 * FIXME Only supporting dedicated chargers even though isp1704 can
163 * detect HUB and HOST chargers. If the device has already been
164 * enumerated, the detection will break the connection.
165 */
166 if (isp->otg->state != OTG_STATE_B_IDLE)
167 return;
168
169 /* disable data pullups */
170 if (isp->otg->gadget)
171 usb_gadget_disconnect(isp->otg->gadget);
172
173 /* detect charger */
174 detect = isp1704_charger_detect(isp);
175 if (detect) {
176 isp->present = detect;
177 power_supply_changed(&isp->psy);
178 }
179
180 /* enable data pullups */
181 if (isp->otg->gadget)
182 usb_gadget_connect(isp->otg->gadget);
183}
184
185static int isp1704_notifier_call(struct notifier_block *nb,
186 unsigned long event, void *unused)
187{
188 struct isp1704_charger *isp =
189 container_of(nb, struct isp1704_charger, nb);
190
191 switch (event) {
192 case USB_EVENT_VBUS:
193 schedule_work(&isp->work);
194 break;
195 case USB_EVENT_NONE:
196 if (isp->present) {
197 isp->present = 0;
198 power_supply_changed(&isp->psy);
199 }
200 break;
201 default:
202 return NOTIFY_DONE;
203 }
204
205 return NOTIFY_OK;
206}
207
208static int isp1704_charger_get_property(struct power_supply *psy,
209 enum power_supply_property psp,
210 union power_supply_propval *val)
211{
212 struct isp1704_charger *isp =
213 container_of(psy, struct isp1704_charger, psy);
214
215 switch (psp) {
216 case POWER_SUPPLY_PROP_PRESENT:
217 val->intval = isp->present;
218 break;
219 case POWER_SUPPLY_PROP_MODEL_NAME:
220 val->strval = isp->model;
221 break;
222 case POWER_SUPPLY_PROP_MANUFACTURER:
223 val->strval = "NXP";
224 break;
225 default:
226 return -EINVAL;
227 }
228 return 0;
229}
230
231static enum power_supply_property power_props[] = {
232 POWER_SUPPLY_PROP_PRESENT,
233 POWER_SUPPLY_PROP_MODEL_NAME,
234 POWER_SUPPLY_PROP_MANUFACTURER,
235};
236
237static inline int isp1704_test_ulpi(struct isp1704_charger *isp)
238{
239 int vendor;
240 int product;
241 int i;
242 int ret = -ENODEV;
243
244 /* Test ULPI interface */
245 ret = otg_io_write(isp->otg, ULPI_SCRATCH, 0xaa);
246 if (ret < 0)
247 return ret;
248
249 ret = otg_io_read(isp->otg, ULPI_SCRATCH);
250 if (ret < 0)
251 return ret;
252
253 if (ret != 0xaa)
254 return -ENODEV;
255
256 /* Verify the product and vendor id matches */
257 vendor = otg_io_read(isp->otg, ULPI_VENDOR_ID_LOW);
258 vendor |= otg_io_read(isp->otg, ULPI_VENDOR_ID_HIGH) << 8;
259 if (vendor != NXP_VENDOR_ID)
260 return -ENODEV;
261
262 product = otg_io_read(isp->otg, ULPI_PRODUCT_ID_LOW);
263 product |= otg_io_read(isp->otg, ULPI_PRODUCT_ID_HIGH) << 8;
264
265 for (i = 0; i < ARRAY_SIZE(isp170x_id); i++) {
266 if (product == isp170x_id[i]) {
267 sprintf(isp->model, "isp%x", product);
268 return product;
269 }
270 }
271
272 dev_err(isp->dev, "product id %x not matching known ids", product);
273
274 return -ENODEV;
275}
276
277static int __devinit isp1704_charger_probe(struct platform_device *pdev)
278{
279 struct isp1704_charger *isp;
280 int ret = -ENODEV;
281
282 isp = kzalloc(sizeof *isp, GFP_KERNEL);
283 if (!isp)
284 return -ENOMEM;
285
286 isp->otg = otg_get_transceiver();
287 if (!isp->otg)
288 goto fail0;
289
290 ret = isp1704_test_ulpi(isp);
291 if (ret < 0)
292 goto fail1;
293
294 isp->dev = &pdev->dev;
295 platform_set_drvdata(pdev, isp);
296
297 isp->psy.name = "isp1704";
298 isp->psy.type = POWER_SUPPLY_TYPE_USB;
299 isp->psy.properties = power_props;
300 isp->psy.num_properties = ARRAY_SIZE(power_props);
301 isp->psy.get_property = isp1704_charger_get_property;
302
303 ret = power_supply_register(isp->dev, &isp->psy);
304 if (ret)
305 goto fail1;
306
307 /*
308 * REVISIT: using work in order to allow the otg notifications to be
309 * made atomically in the future.
310 */
311 INIT_WORK(&isp->work, isp1704_charger_work);
312
313 isp->nb.notifier_call = isp1704_notifier_call;
314
315 ret = otg_register_notifier(isp->otg, &isp->nb);
316 if (ret)
317 goto fail2;
318
319 dev_info(isp->dev, "registered with product id %s\n", isp->model);
320
321 return 0;
322fail2:
323 power_supply_unregister(&isp->psy);
324fail1:
325 otg_put_transceiver(isp->otg);
326fail0:
327 kfree(isp);
328
329 dev_err(&pdev->dev, "failed to register isp1704 with error %d\n", ret);
330
331 return ret;
332}
333
334static int __devexit isp1704_charger_remove(struct platform_device *pdev)
335{
336 struct isp1704_charger *isp = platform_get_drvdata(pdev);
337
338 otg_unregister_notifier(isp->otg, &isp->nb);
339 power_supply_unregister(&isp->psy);
340 otg_put_transceiver(isp->otg);
341 kfree(isp);
342
343 return 0;
344}
345
346static struct platform_driver isp1704_charger_driver = {
347 .driver = {
348 .name = "isp1704_charger",
349 },
350 .probe = isp1704_charger_probe,
351 .remove = __devexit_p(isp1704_charger_remove),
352};
353
354static int __init isp1704_charger_init(void)
355{
356 return platform_driver_register(&isp1704_charger_driver);
357}
358module_init(isp1704_charger_init);
359
360static void __exit isp1704_charger_exit(void)
361{
362 platform_driver_unregister(&isp1704_charger_driver);
363}
364module_exit(isp1704_charger_exit);
365
366MODULE_ALIAS("platform:isp1704_charger");
367MODULE_AUTHOR("Nokia Corporation");
368MODULE_DESCRIPTION("ISP170x USB Charger driver");
369MODULE_LICENSE("GPL");
diff --git a/drivers/power/jz4740-battery.c b/drivers/power/jz4740-battery.c
index 20c4b952e9bd..a8108a73593e 100644
--- a/drivers/power/jz4740-battery.c
+++ b/drivers/power/jz4740-battery.c
@@ -383,6 +383,7 @@ static int __devexit jz_battery_remove(struct platform_device *pdev)
383 383
384 iounmap(jz_battery->base); 384 iounmap(jz_battery->base);
385 release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem)); 385 release_mem_region(jz_battery->mem->start, resource_size(jz_battery->mem));
386 kfree(jz_battery);
386 387
387 return 0; 388 return 0;
388} 389}
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index aafc1c506eda..5bc1dcf7785e 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -271,14 +271,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
271 if (ret) 271 if (ret)
272 return ret; 272 return ret;
273 273
274 val->intval = (int)be16_to_cpu(ec_word) * 9760L / 32; 274 val->intval = (s16)be16_to_cpu(ec_word) * 9760L / 32;
275 break; 275 break;
276 case POWER_SUPPLY_PROP_CURRENT_AVG: 276 case POWER_SUPPLY_PROP_CURRENT_AVG:
277 ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2); 277 ret = olpc_ec_cmd(EC_BAT_CURRENT, NULL, 0, (void *)&ec_word, 2);
278 if (ret) 278 if (ret)
279 return ret; 279 return ret;
280 280
281 val->intval = (int)be16_to_cpu(ec_word) * 15625L / 120; 281 val->intval = (s16)be16_to_cpu(ec_word) * 15625L / 120;
282 break; 282 break;
283 case POWER_SUPPLY_PROP_CAPACITY: 283 case POWER_SUPPLY_PROP_CAPACITY:
284 ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1); 284 ret = olpc_ec_cmd(EC_BAT_SOC, NULL, 0, &ec_byte, 1);
@@ -299,7 +299,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
299 if (ret) 299 if (ret)
300 return ret; 300 return ret;
301 301
302 val->intval = (int)be16_to_cpu(ec_word) * 100 / 256; 302 val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256;
303 break; 303 break;
304 case POWER_SUPPLY_PROP_TEMP_AMBIENT: 304 case POWER_SUPPLY_PROP_TEMP_AMBIENT:
305 ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2); 305 ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
@@ -313,7 +313,7 @@ static int olpc_bat_get_property(struct power_supply *psy,
313 if (ret) 313 if (ret)
314 return ret; 314 return ret;
315 315
316 val->intval = (int)be16_to_cpu(ec_word) * 6250 / 15; 316 val->intval = (s16)be16_to_cpu(ec_word) * 6250 / 15;
317 break; 317 break;
318 case POWER_SUPPLY_PROP_SERIAL_NUMBER: 318 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
319 ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8); 319 ret = olpc_ec_cmd(EC_BAT_SERIAL, NULL, 0, (void *)&ser_buf, 8);
diff --git a/drivers/power/pcf50633-charger.c b/drivers/power/pcf50633-charger.c
index 066f994e6fe5..4fa52e1781a2 100644
--- a/drivers/power/pcf50633-charger.c
+++ b/drivers/power/pcf50633-charger.c
@@ -456,6 +456,7 @@ static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
456 for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++) 456 for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
457 pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]); 457 pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
458 458
459 sysfs_remove_group(&pdev->dev.kobj, &mbc_attr_group);
459 power_supply_unregister(&mbc->usb); 460 power_supply_unregister(&mbc->usb);
460 power_supply_unregister(&mbc->adapter); 461 power_supply_unregister(&mbc->adapter);
461 power_supply_unregister(&mbc->ac); 462 power_supply_unregister(&mbc->ac);
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 9d30eeb8c810..cd1f90754a3a 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -42,7 +42,8 @@ static ssize_t power_supply_show_property(struct device *dev,
42 struct device_attribute *attr, 42 struct device_attribute *attr,
43 char *buf) { 43 char *buf) {
44 static char *type_text[] = { 44 static char *type_text[] = {
45 "Battery", "UPS", "Mains", "USB" 45 "Battery", "UPS", "Mains", "USB",
46 "USB_DCP", "USB_CDP", "USB_ACA"
46 }; 47 };
47 static char *status_text[] = { 48 static char *status_text[] = {
48 "Unknown", "Charging", "Discharging", "Not charging", "Full" 49 "Unknown", "Charging", "Discharging", "Not charging", "Full"
@@ -138,6 +139,7 @@ static struct device_attribute power_supply_attrs[] = {
138 POWER_SUPPLY_ATTR(voltage_min_design), 139 POWER_SUPPLY_ATTR(voltage_min_design),
139 POWER_SUPPLY_ATTR(voltage_now), 140 POWER_SUPPLY_ATTR(voltage_now),
140 POWER_SUPPLY_ATTR(voltage_avg), 141 POWER_SUPPLY_ATTR(voltage_avg),
142 POWER_SUPPLY_ATTR(current_max),
141 POWER_SUPPLY_ATTR(current_now), 143 POWER_SUPPLY_ATTR(current_now),
142 POWER_SUPPLY_ATTR(current_avg), 144 POWER_SUPPLY_ATTR(current_avg),
143 POWER_SUPPLY_ATTR(power_now), 145 POWER_SUPPLY_ATTR(power_now),
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
new file mode 100644
index 000000000000..ff1f42398a2e
--- /dev/null
+++ b/drivers/power/twl4030_charger.c
@@ -0,0 +1,565 @@
1/*
2 * TWL4030/TPS65950 BCI (Battery Charger Interface) driver
3 *
4 * Copyright (C) 2010 Gražvydas Ignotas <notasas@gmail.com>
5 *
6 * based on twl4030_bci_battery.c by TI
7 * Copyright (C) 2008 Texas Instruments, Inc.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 */
14
15#include <linux/init.h>
16#include <linux/module.h>
17#include <linux/slab.h>
18#include <linux/platform_device.h>
19#include <linux/interrupt.h>
20#include <linux/i2c/twl.h>
21#include <linux/power_supply.h>
22#include <linux/notifier.h>
23#include <linux/usb/otg.h>
24
25#define TWL4030_BCIMSTATEC 0x02
26#define TWL4030_BCIICHG 0x08
27#define TWL4030_BCIVAC 0x0a
28#define TWL4030_BCIVBUS 0x0c
29#define TWL4030_BCIMFSTS4 0x10
30#define TWL4030_BCICTL1 0x23
31
32#define TWL4030_BCIAUTOWEN BIT(5)
33#define TWL4030_CONFIG_DONE BIT(4)
34#define TWL4030_BCIAUTOUSB BIT(1)
35#define TWL4030_BCIAUTOAC BIT(0)
36#define TWL4030_CGAIN BIT(5)
37#define TWL4030_USBFASTMCHG BIT(2)
38#define TWL4030_STS_VBUS BIT(7)
39#define TWL4030_STS_USB_ID BIT(2)
40
41/* BCI interrupts */
42#define TWL4030_WOVF BIT(0) /* Watchdog overflow */
43#define TWL4030_TMOVF BIT(1) /* Timer overflow */
44#define TWL4030_ICHGHIGH BIT(2) /* Battery charge current high */
45#define TWL4030_ICHGLOW BIT(3) /* Battery cc. low / FSM state change */
46#define TWL4030_ICHGEOC BIT(4) /* Battery current end-of-charge */
47#define TWL4030_TBATOR2 BIT(5) /* Battery temperature out of range 2 */
48#define TWL4030_TBATOR1 BIT(6) /* Battery temperature out of range 1 */
49#define TWL4030_BATSTS BIT(7) /* Battery status */
50
51#define TWL4030_VBATLVL BIT(0) /* VBAT level */
52#define TWL4030_VBATOV BIT(1) /* VBAT overvoltage */
53#define TWL4030_VBUSOV BIT(2) /* VBUS overvoltage */
54#define TWL4030_ACCHGOV BIT(3) /* Ac charger overvoltage */
55
56#define TWL4030_MSTATEC_USB BIT(4)
57#define TWL4030_MSTATEC_AC BIT(5)
58#define TWL4030_MSTATEC_MASK 0x0f
59#define TWL4030_MSTATEC_QUICK1 0x02
60#define TWL4030_MSTATEC_QUICK7 0x07
61#define TWL4030_MSTATEC_COMPLETE1 0x0b
62#define TWL4030_MSTATEC_COMPLETE4 0x0e
63
64static bool allow_usb;
65module_param(allow_usb, bool, 1);
66MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
67
68struct twl4030_bci {
69 struct device *dev;
70 struct power_supply ac;
71 struct power_supply usb;
72 struct otg_transceiver *transceiver;
73 struct notifier_block otg_nb;
74 int irq_chg;
75 int irq_bci;
76};
77
78/*
79 * clear and set bits on an given register on a given module
80 */
81static int twl4030_clear_set(u8 mod_no, u8 clear, u8 set, u8 reg)
82{
83 u8 val = 0;
84 int ret;
85
86 ret = twl_i2c_read_u8(mod_no, &val, reg);
87 if (ret)
88 return ret;
89
90 val &= ~clear;
91 val |= set;
92
93 return twl_i2c_write_u8(mod_no, val, reg);
94}
95
96static int twl4030_bci_read(u8 reg, u8 *val)
97{
98 return twl_i2c_read_u8(TWL4030_MODULE_MAIN_CHARGE, val, reg);
99}
100
101static int twl4030_clear_set_boot_bci(u8 clear, u8 set)
102{
103 return twl4030_clear_set(TWL4030_MODULE_PM_MASTER, 0,
104 TWL4030_CONFIG_DONE | TWL4030_BCIAUTOWEN | set,
105 TWL4030_PM_MASTER_BOOT_BCI);
106}
107
108static int twl4030bci_read_adc_val(u8 reg)
109{
110 int ret, temp;
111 u8 val;
112
113 /* read MSB */
114 ret = twl4030_bci_read(reg + 1, &val);
115 if (ret)
116 return ret;
117
118 temp = (int)(val & 0x03) << 8;
119
120 /* read LSB */
121 ret = twl4030_bci_read(reg, &val);
122 if (ret)
123 return ret;
124
125 return temp | val;
126}
127
128/*
129 * Check if VBUS power is present
130 */
131static int twl4030_bci_have_vbus(struct twl4030_bci *bci)
132{
133 int ret;
134 u8 hwsts;
135
136 ret = twl_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &hwsts,
137 TWL4030_PM_MASTER_STS_HW_CONDITIONS);
138 if (ret < 0)
139 return 0;
140
141 dev_dbg(bci->dev, "check_vbus: HW_CONDITIONS %02x\n", hwsts);
142
143 /* in case we also have STS_USB_ID, VBUS is driven by TWL itself */
144 if ((hwsts & TWL4030_STS_VBUS) && !(hwsts & TWL4030_STS_USB_ID))
145 return 1;
146
147 return 0;
148}
149
150/*
151 * Enable/Disable USB Charge funtionality.
152 */
153static int twl4030_charger_enable_usb(struct twl4030_bci *bci, bool enable)
154{
155 int ret;
156
157 if (enable) {
158 /* Check for USB charger conneted */
159 if (!twl4030_bci_have_vbus(bci))
160 return -ENODEV;
161
162 /*
163 * Until we can find out what current the device can provide,
164 * require a module param to enable USB charging.
165 */
166 if (!allow_usb) {
167 dev_warn(bci->dev, "USB charging is disabled.\n");
168 return -EACCES;
169 }
170
171 /* forcing the field BCIAUTOUSB (BOOT_BCI[1]) to 1 */
172 ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOUSB);
173 if (ret < 0)
174 return ret;
175
176 /* forcing USBFASTMCHG(BCIMFSTS4[2]) to 1 */
177 ret = twl4030_clear_set(TWL4030_MODULE_MAIN_CHARGE, 0,
178 TWL4030_USBFASTMCHG, TWL4030_BCIMFSTS4);
179 } else {
180 ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOUSB, 0);
181 }
182
183 return ret;
184}
185
186/*
187 * Enable/Disable AC Charge funtionality.
188 */
189static int twl4030_charger_enable_ac(bool enable)
190{
191 int ret;
192
193 if (enable)
194 ret = twl4030_clear_set_boot_bci(0, TWL4030_BCIAUTOAC);
195 else
196 ret = twl4030_clear_set_boot_bci(TWL4030_BCIAUTOAC, 0);
197
198 return ret;
199}
200
201/*
202 * TWL4030 CHG_PRES (AC charger presence) events
203 */
204static irqreturn_t twl4030_charger_interrupt(int irq, void *arg)
205{
206 struct twl4030_bci *bci = arg;
207
208 dev_dbg(bci->dev, "CHG_PRES irq\n");
209 power_supply_changed(&bci->ac);
210 power_supply_changed(&bci->usb);
211
212 return IRQ_HANDLED;
213}
214
215/*
216 * TWL4030 BCI monitoring events
217 */
218static irqreturn_t twl4030_bci_interrupt(int irq, void *arg)
219{
220 struct twl4030_bci *bci = arg;
221 u8 irqs1, irqs2;
222 int ret;
223
224 ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1,
225 TWL4030_INTERRUPTS_BCIISR1A);
226 if (ret < 0)
227 return IRQ_HANDLED;
228
229 ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2,
230 TWL4030_INTERRUPTS_BCIISR2A);
231 if (ret < 0)
232 return IRQ_HANDLED;
233
234 dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1);
235
236 if (irqs1 & (TWL4030_ICHGLOW | TWL4030_ICHGEOC)) {
237 /* charger state change, inform the core */
238 power_supply_changed(&bci->ac);
239 power_supply_changed(&bci->usb);
240 }
241
242 /* various monitoring events, for now we just log them here */
243 if (irqs1 & (TWL4030_TBATOR2 | TWL4030_TBATOR1))
244 dev_warn(bci->dev, "battery temperature out of range\n");
245
246 if (irqs1 & TWL4030_BATSTS)
247 dev_crit(bci->dev, "battery disconnected\n");
248
249 if (irqs2 & TWL4030_VBATOV)
250 dev_crit(bci->dev, "VBAT overvoltage\n");
251
252 if (irqs2 & TWL4030_VBUSOV)
253 dev_crit(bci->dev, "VBUS overvoltage\n");
254
255 if (irqs2 & TWL4030_ACCHGOV)
256 dev_crit(bci->dev, "Ac charger overvoltage\n");
257
258 return IRQ_HANDLED;
259}
260
261static int twl4030_bci_usb_ncb(struct notifier_block *nb, unsigned long val,
262 void *priv)
263{
264 struct twl4030_bci *bci = container_of(nb, struct twl4030_bci, otg_nb);
265
266 dev_dbg(bci->dev, "OTG notify %lu\n", val);
267
268 switch (val) {
269 case USB_EVENT_VBUS:
270 case USB_EVENT_CHARGER:
271 twl4030_charger_enable_usb(bci, true);
272 break;
273 case USB_EVENT_NONE:
274 twl4030_charger_enable_usb(bci, false);
275 break;
276 }
277
278 return NOTIFY_OK;
279}
280
281/*
282 * TI provided formulas:
283 * CGAIN == 0: ICHG = (BCIICHG * 1.7) / (2^10 - 1) - 0.85
284 * CGAIN == 1: ICHG = (BCIICHG * 3.4) / (2^10 - 1) - 1.7
285 * Here we use integer approximation of:
286 * CGAIN == 0: val * 1.6618 - 0.85
287 * CGAIN == 1: (val * 1.6618 - 0.85) * 2
288 */
289static int twl4030_charger_get_current(void)
290{
291 int curr;
292 int ret;
293 u8 bcictl1;
294
295 curr = twl4030bci_read_adc_val(TWL4030_BCIICHG);
296 if (curr < 0)
297 return curr;
298
299 ret = twl4030_bci_read(TWL4030_BCICTL1, &bcictl1);
300 if (ret)
301 return ret;
302
303 ret = (curr * 16618 - 850 * 10000) / 10;
304 if (bcictl1 & TWL4030_CGAIN)
305 ret *= 2;
306
307 return ret;
308}
309
310/*
311 * Returns the main charge FSM state
312 * Or < 0 on failure.
313 */
314static int twl4030bci_state(struct twl4030_bci *bci)
315{
316 int ret;
317 u8 state;
318
319 ret = twl4030_bci_read(TWL4030_BCIMSTATEC, &state);
320 if (ret) {
321 pr_err("twl4030_bci: error reading BCIMSTATEC\n");
322 return ret;
323 }
324
325 dev_dbg(bci->dev, "state: %02x\n", state);
326
327 return state;
328}
329
330static int twl4030_bci_state_to_status(int state)
331{
332 state &= TWL4030_MSTATEC_MASK;
333 if (TWL4030_MSTATEC_QUICK1 <= state && state <= TWL4030_MSTATEC_QUICK7)
334 return POWER_SUPPLY_STATUS_CHARGING;
335 else if (TWL4030_MSTATEC_COMPLETE1 <= state &&
336 state <= TWL4030_MSTATEC_COMPLETE4)
337 return POWER_SUPPLY_STATUS_FULL;
338 else
339 return POWER_SUPPLY_STATUS_NOT_CHARGING;
340}
341
342static int twl4030_bci_get_property(struct power_supply *psy,
343 enum power_supply_property psp,
344 union power_supply_propval *val)
345{
346 struct twl4030_bci *bci = dev_get_drvdata(psy->dev->parent);
347 int is_charging;
348 int state;
349 int ret;
350
351 state = twl4030bci_state(bci);
352 if (state < 0)
353 return state;
354
355 if (psy->type == POWER_SUPPLY_TYPE_USB)
356 is_charging = state & TWL4030_MSTATEC_USB;
357 else
358 is_charging = state & TWL4030_MSTATEC_AC;
359
360 switch (psp) {
361 case POWER_SUPPLY_PROP_STATUS:
362 if (is_charging)
363 val->intval = twl4030_bci_state_to_status(state);
364 else
365 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
366 break;
367 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
368 /* charging must be active for meaningful result */
369 if (!is_charging)
370 return -ENODATA;
371 if (psy->type == POWER_SUPPLY_TYPE_USB) {
372 ret = twl4030bci_read_adc_val(TWL4030_BCIVBUS);
373 if (ret < 0)
374 return ret;
375 /* BCIVBUS uses ADCIN8, 7/1023 V/step */
376 val->intval = ret * 6843;
377 } else {
378 ret = twl4030bci_read_adc_val(TWL4030_BCIVAC);
379 if (ret < 0)
380 return ret;
381 /* BCIVAC uses ADCIN11, 10/1023 V/step */
382 val->intval = ret * 9775;
383 }
384 break;
385 case POWER_SUPPLY_PROP_CURRENT_NOW:
386 if (!is_charging)
387 return -ENODATA;
388 /* current measurement is shared between AC and USB */
389 ret = twl4030_charger_get_current();
390 if (ret < 0)
391 return ret;
392 val->intval = ret;
393 break;
394 case POWER_SUPPLY_PROP_ONLINE:
395 val->intval = is_charging &&
396 twl4030_bci_state_to_status(state) !=
397 POWER_SUPPLY_STATUS_NOT_CHARGING;
398 break;
399 default:
400 return -EINVAL;
401 }
402
403 return 0;
404}
405
406static enum power_supply_property twl4030_charger_props[] = {
407 POWER_SUPPLY_PROP_STATUS,
408 POWER_SUPPLY_PROP_ONLINE,
409 POWER_SUPPLY_PROP_VOLTAGE_NOW,
410 POWER_SUPPLY_PROP_CURRENT_NOW,
411};
412
413static int __init twl4030_bci_probe(struct platform_device *pdev)
414{
415 struct twl4030_bci *bci;
416 int ret;
417 int reg;
418
419 bci = kzalloc(sizeof(*bci), GFP_KERNEL);
420 if (bci == NULL)
421 return -ENOMEM;
422
423 bci->dev = &pdev->dev;
424 bci->irq_chg = platform_get_irq(pdev, 0);
425 bci->irq_bci = platform_get_irq(pdev, 1);
426
427 platform_set_drvdata(pdev, bci);
428
429 bci->ac.name = "twl4030_ac";
430 bci->ac.type = POWER_SUPPLY_TYPE_MAINS;
431 bci->ac.properties = twl4030_charger_props;
432 bci->ac.num_properties = ARRAY_SIZE(twl4030_charger_props);
433 bci->ac.get_property = twl4030_bci_get_property;
434
435 ret = power_supply_register(&pdev->dev, &bci->ac);
436 if (ret) {
437 dev_err(&pdev->dev, "failed to register ac: %d\n", ret);
438 goto fail_register_ac;
439 }
440
441 bci->usb.name = "twl4030_usb";
442 bci->usb.type = POWER_SUPPLY_TYPE_USB;
443 bci->usb.properties = twl4030_charger_props;
444 bci->usb.num_properties = ARRAY_SIZE(twl4030_charger_props);
445 bci->usb.get_property = twl4030_bci_get_property;
446
447 ret = power_supply_register(&pdev->dev, &bci->usb);
448 if (ret) {
449 dev_err(&pdev->dev, "failed to register usb: %d\n", ret);
450 goto fail_register_usb;
451 }
452
453 ret = request_threaded_irq(bci->irq_chg, NULL,
454 twl4030_charger_interrupt, 0, pdev->name, bci);
455 if (ret < 0) {
456 dev_err(&pdev->dev, "could not request irq %d, status %d\n",
457 bci->irq_chg, ret);
458 goto fail_chg_irq;
459 }
460
461 ret = request_threaded_irq(bci->irq_bci, NULL,
462 twl4030_bci_interrupt, 0, pdev->name, bci);
463 if (ret < 0) {
464 dev_err(&pdev->dev, "could not request irq %d, status %d\n",
465 bci->irq_bci, ret);
466 goto fail_bci_irq;
467 }
468
469 bci->transceiver = otg_get_transceiver();
470 if (bci->transceiver != NULL) {
471 bci->otg_nb.notifier_call = twl4030_bci_usb_ncb;
472 otg_register_notifier(bci->transceiver, &bci->otg_nb);
473 }
474
475 /* Enable interrupts now. */
476 reg = ~(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 |
477 TWL4030_TBATOR1 | TWL4030_BATSTS);
478 ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
479 TWL4030_INTERRUPTS_BCIIMR1A);
480 if (ret < 0) {
481 dev_err(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
482 goto fail_unmask_interrupts;
483 }
484
485 reg = ~(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
486 ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
487 TWL4030_INTERRUPTS_BCIIMR2A);
488 if (ret < 0)
489 dev_warn(&pdev->dev, "failed to unmask interrupts: %d\n", ret);
490
491 twl4030_charger_enable_ac(true);
492 twl4030_charger_enable_usb(bci, true);
493
494 return 0;
495
496fail_unmask_interrupts:
497 if (bci->transceiver != NULL) {
498 otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
499 otg_put_transceiver(bci->transceiver);
500 }
501 free_irq(bci->irq_bci, bci);
502fail_bci_irq:
503 free_irq(bci->irq_chg, bci);
504fail_chg_irq:
505 power_supply_unregister(&bci->usb);
506fail_register_usb:
507 power_supply_unregister(&bci->ac);
508fail_register_ac:
509 platform_set_drvdata(pdev, NULL);
510 kfree(bci);
511
512 return ret;
513}
514
515static int __exit twl4030_bci_remove(struct platform_device *pdev)
516{
517 struct twl4030_bci *bci = platform_get_drvdata(pdev);
518
519 twl4030_charger_enable_ac(false);
520 twl4030_charger_enable_usb(bci, false);
521
522 /* mask interrupts */
523 twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
524 TWL4030_INTERRUPTS_BCIIMR1A);
525 twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff,
526 TWL4030_INTERRUPTS_BCIIMR2A);
527
528 if (bci->transceiver != NULL) {
529 otg_unregister_notifier(bci->transceiver, &bci->otg_nb);
530 otg_put_transceiver(bci->transceiver);
531 }
532 free_irq(bci->irq_bci, bci);
533 free_irq(bci->irq_chg, bci);
534 power_supply_unregister(&bci->usb);
535 power_supply_unregister(&bci->ac);
536 platform_set_drvdata(pdev, NULL);
537 kfree(bci);
538
539 return 0;
540}
541
542static struct platform_driver twl4030_bci_driver = {
543 .driver = {
544 .name = "twl4030_bci",
545 .owner = THIS_MODULE,
546 },
547 .remove = __exit_p(twl4030_bci_remove),
548};
549
550static int __init twl4030_bci_init(void)
551{
552 return platform_driver_probe(&twl4030_bci_driver, twl4030_bci_probe);
553}
554module_init(twl4030_bci_init);
555
556static void __exit twl4030_bci_exit(void)
557{
558 platform_driver_unregister(&twl4030_bci_driver);
559}
560module_exit(twl4030_bci_exit);
561
562MODULE_AUTHOR("Gražydas Ignotas");
563MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver");
564MODULE_LICENSE("GPL");
565MODULE_ALIAS("platform:twl4030_bci");
diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c
index fbcc36dae470..ddf8cf5f3204 100644
--- a/drivers/power/wm831x_power.c
+++ b/drivers/power/wm831x_power.c
@@ -267,7 +267,6 @@ static void wm831x_config_battery(struct wm831x *wm831x)
267 ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1, 267 ret = wm831x_set_bits(wm831x, WM831X_CHARGER_CONTROL_1,
268 WM831X_CHG_ENA_MASK | 268 WM831X_CHG_ENA_MASK |
269 WM831X_CHG_FAST_MASK | 269 WM831X_CHG_FAST_MASK |
270 WM831X_CHG_ITERM_MASK |
271 WM831X_CHG_ITERM_MASK, 270 WM831X_CHG_ITERM_MASK,
272 reg1); 271 reg1);
273 if (ret != 0) 272 if (ret != 0)
@@ -612,6 +611,7 @@ static __devexit int wm831x_power_remove(struct platform_device *pdev)
612 power_supply_unregister(&wm831x_power->battery); 611 power_supply_unregister(&wm831x_power->battery);
613 power_supply_unregister(&wm831x_power->wall); 612 power_supply_unregister(&wm831x_power->wall);
614 power_supply_unregister(&wm831x_power->usb); 613 power_supply_unregister(&wm831x_power->usb);
614 kfree(wm831x_power);
615 return 0; 615 return 0;
616} 616}
617 617
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-17 13:53:37 -0500