blob: 041f9b638d28c5f788ee2c828d29b853728f67b4 [file] [log] [blame]
Ryan Mallonbfdb46c2009-06-18 11:26:26 +12001/*
2 * I2C client/driver for the Maxim/Dallas DS2782 Stand-Alone Fuel Gauge IC
3 *
4 * Copyright (C) 2009 Bluewater Systems Ltd
5 *
Ryan Mallon1c5454e2011-06-15 14:45:36 +10006 * Author: Ryan Mallon
Ryan Mallonbfdb46c2009-06-18 11:26:26 +12007 *
Yulia Vilensky9b9ade62010-04-26 14:05:25 +03008 * DS2786 added by Yulia Vilensky <vilensky@compulab.co.il>
9 *
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +030010 * UEvent sending added by Evgeny Romanov <romanov@neurosoft.ru>
11 *
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120012 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 *
16 */
17
18#include <linux/kernel.h>
19#include <linux/module.h>
20#include <linux/types.h>
21#include <linux/errno.h>
22#include <linux/swab.h>
23#include <linux/i2c.h>
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +030024#include <linux/delay.h>
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120025#include <linux/idr.h>
26#include <linux/power_supply.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090027#include <linux/slab.h>
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030028#include <linux/ds2782_battery.h>
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120029
30#define DS2782_REG_RARC 0x06 /* Remaining active relative capacity */
31
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030032#define DS278x_REG_VOLT_MSB 0x0c
33#define DS278x_REG_TEMP_MSB 0x0a
34#define DS278x_REG_CURRENT_MSB 0x0e
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120035
36/* EEPROM Block */
37#define DS2782_REG_RSNSP 0x69 /* Sense resistor value */
38
39/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
40#define DS2782_CURRENT_UNITS 1563
41
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030042#define DS2786_REG_RARC 0x02 /* Remaining active relative capacity */
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120043
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030044#define DS2786_CURRENT_UNITS 25
45
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +030046#define DS278x_DELAY 1000
47
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030048struct ds278x_info;
49
50struct ds278x_battery_ops {
Peter Hueweeb9650d2010-05-13 01:54:57 +020051 int (*get_battery_current)(struct ds278x_info *info, int *current_uA);
Ryan Mallon353f8672010-10-01 14:17:42 -070052 int (*get_battery_voltage)(struct ds278x_info *info, int *voltage_uV);
53 int (*get_battery_capacity)(struct ds278x_info *info, int *capacity);
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030054};
55
56#define to_ds278x_info(x) container_of(x, struct ds278x_info, battery)
57
58struct ds278x_info {
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120059 struct i2c_client *client;
60 struct power_supply battery;
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030061 struct ds278x_battery_ops *ops;
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +030062 struct delayed_work bat_work;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120063 int id;
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030064 int rsns;
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +030065 int capacity;
66 int status; /* State Of Charge */
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120067};
68
69static DEFINE_IDR(battery_id);
70static DEFINE_MUTEX(battery_lock);
71
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030072static inline int ds278x_read_reg(struct ds278x_info *info, int reg, u8 *val)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120073{
74 int ret;
75
76 ret = i2c_smbus_read_byte_data(info->client, reg);
77 if (ret < 0) {
78 dev_err(&info->client->dev, "register read failed\n");
79 return ret;
80 }
81
82 *val = ret;
83 return 0;
84}
85
Yulia Vilensky9b9ade62010-04-26 14:05:25 +030086static inline int ds278x_read_reg16(struct ds278x_info *info, int reg_msb,
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120087 s16 *val)
88{
89 int ret;
90
Dan Carpenter85117482012-10-24 10:12:29 +030091 ret = i2c_smbus_read_word_data(info->client, reg_msb);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120092 if (ret < 0) {
93 dev_err(&info->client->dev, "register read failed\n");
94 return ret;
95 }
96
Dan Carpenter85117482012-10-24 10:12:29 +030097 *val = swab16(ret);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +120098 return 0;
99}
100
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300101static int ds278x_get_temp(struct ds278x_info *info, int *temp)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200102{
103 s16 raw;
104 int err;
105
106 /*
107 * Temperature is measured in units of 0.125 degrees celcius, the
108 * power_supply class measures temperature in tenths of degrees
109 * celsius. The temperature value is stored as a 10 bit number, plus
110 * sign in the upper bits of a 16 bit register.
111 */
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300112 err = ds278x_read_reg16(info, DS278x_REG_TEMP_MSB, &raw);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200113 if (err)
114 return err;
115 *temp = ((raw / 32) * 125) / 100;
116 return 0;
117}
118
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300119static int ds2782_get_current(struct ds278x_info *info, int *current_uA)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200120{
121 int sense_res;
122 int err;
123 u8 sense_res_raw;
124 s16 raw;
125
126 /*
127 * The units of measurement for current are dependent on the value of
128 * the sense resistor.
129 */
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300130 err = ds278x_read_reg(info, DS2782_REG_RSNSP, &sense_res_raw);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200131 if (err)
132 return err;
133 if (sense_res_raw == 0) {
134 dev_err(&info->client->dev, "sense resistor value is 0\n");
135 return -ENXIO;
136 }
137 sense_res = 1000 / sense_res_raw;
138
139 dev_dbg(&info->client->dev, "sense resistor = %d milli-ohms\n",
140 sense_res);
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300141 err = ds278x_read_reg16(info, DS278x_REG_CURRENT_MSB, &raw);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200142 if (err)
143 return err;
144 *current_uA = raw * (DS2782_CURRENT_UNITS / sense_res);
145 return 0;
146}
147
Ryan Mallon353f8672010-10-01 14:17:42 -0700148static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uV)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200149{
150 s16 raw;
151 int err;
152
153 /*
154 * Voltage is measured in units of 4.88mV. The voltage is stored as
155 * a 10-bit number plus sign, in the upper bits of a 16-bit register
156 */
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300157 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200158 if (err)
159 return err;
Ryan Mallon353f8672010-10-01 14:17:42 -0700160 *voltage_uV = (raw / 32) * 4800;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200161 return 0;
162}
163
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300164static int ds2782_get_capacity(struct ds278x_info *info, int *capacity)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200165{
166 int err;
167 u8 raw;
168
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300169 err = ds278x_read_reg(info, DS2782_REG_RARC, &raw);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200170 if (err)
171 return err;
172 *capacity = raw;
Ryan Mallon2d317572010-06-15 12:44:59 +1200173 return 0;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200174}
175
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300176static int ds2786_get_current(struct ds278x_info *info, int *current_uA)
177{
178 int err;
179 s16 raw;
180
181 err = ds278x_read_reg16(info, DS278x_REG_CURRENT_MSB, &raw);
182 if (err)
183 return err;
184 *current_uA = (raw / 16) * (DS2786_CURRENT_UNITS / info->rsns);
185 return 0;
186}
187
Ryan Mallon353f8672010-10-01 14:17:42 -0700188static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uV)
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300189{
190 s16 raw;
191 int err;
192
193 /*
194 * Voltage is measured in units of 1.22mV. The voltage is stored as
Matthias Brugger1b5e1c62014-01-17 18:02:38 +0100195 * a 12-bit number plus sign, in the upper bits of a 16-bit register
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300196 */
197 err = ds278x_read_reg16(info, DS278x_REG_VOLT_MSB, &raw);
198 if (err)
199 return err;
Ryan Mallon353f8672010-10-01 14:17:42 -0700200 *voltage_uV = (raw / 8) * 1220;
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300201 return 0;
202}
203
204static int ds2786_get_capacity(struct ds278x_info *info, int *capacity)
205{
206 int err;
207 u8 raw;
208
209 err = ds278x_read_reg(info, DS2786_REG_RARC, &raw);
210 if (err)
211 return err;
212 /* Relative capacity is displayed with resolution 0.5 % */
213 *capacity = raw/2 ;
214 return 0;
215}
216
217static int ds278x_get_status(struct ds278x_info *info, int *status)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200218{
219 int err;
220 int current_uA;
221 int capacity;
222
Peter Hueweeb9650d2010-05-13 01:54:57 +0200223 err = info->ops->get_battery_current(info, &current_uA);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200224 if (err)
225 return err;
226
Peter Hueweeb9650d2010-05-13 01:54:57 +0200227 err = info->ops->get_battery_capacity(info, &capacity);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200228 if (err)
229 return err;
230
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300231 info->capacity = capacity;
232
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200233 if (capacity == 100)
234 *status = POWER_SUPPLY_STATUS_FULL;
235 else if (current_uA == 0)
236 *status = POWER_SUPPLY_STATUS_NOT_CHARGING;
237 else if (current_uA < 0)
238 *status = POWER_SUPPLY_STATUS_DISCHARGING;
239 else
240 *status = POWER_SUPPLY_STATUS_CHARGING;
241
242 return 0;
243}
244
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300245static int ds278x_battery_get_property(struct power_supply *psy,
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200246 enum power_supply_property prop,
247 union power_supply_propval *val)
248{
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300249 struct ds278x_info *info = to_ds278x_info(psy);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200250 int ret;
251
252 switch (prop) {
253 case POWER_SUPPLY_PROP_STATUS:
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300254 ret = ds278x_get_status(info, &val->intval);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200255 break;
256
257 case POWER_SUPPLY_PROP_CAPACITY:
Peter Hueweeb9650d2010-05-13 01:54:57 +0200258 ret = info->ops->get_battery_capacity(info, &val->intval);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200259 break;
260
261 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
Peter Hueweeb9650d2010-05-13 01:54:57 +0200262 ret = info->ops->get_battery_voltage(info, &val->intval);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200263 break;
264
265 case POWER_SUPPLY_PROP_CURRENT_NOW:
Peter Hueweeb9650d2010-05-13 01:54:57 +0200266 ret = info->ops->get_battery_current(info, &val->intval);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200267 break;
268
269 case POWER_SUPPLY_PROP_TEMP:
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300270 ret = ds278x_get_temp(info, &val->intval);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200271 break;
272
273 default:
274 ret = -EINVAL;
275 }
276
277 return ret;
278}
279
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300280static void ds278x_bat_update(struct ds278x_info *info)
281{
282 int old_status = info->status;
283 int old_capacity = info->capacity;
284
285 ds278x_get_status(info, &info->status);
286
287 if ((old_status != info->status) || (old_capacity != info->capacity))
288 power_supply_changed(&info->battery);
289}
290
291static void ds278x_bat_work(struct work_struct *work)
292{
293 struct ds278x_info *info;
294
295 info = container_of(work, struct ds278x_info, bat_work.work);
296 ds278x_bat_update(info);
297
298 schedule_delayed_work(&info->bat_work, DS278x_DELAY);
299}
300
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300301static enum power_supply_property ds278x_battery_props[] = {
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200302 POWER_SUPPLY_PROP_STATUS,
303 POWER_SUPPLY_PROP_CAPACITY,
304 POWER_SUPPLY_PROP_VOLTAGE_NOW,
305 POWER_SUPPLY_PROP_CURRENT_NOW,
306 POWER_SUPPLY_PROP_TEMP,
307};
308
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300309static void ds278x_power_supply_init(struct power_supply *battery)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200310{
311 battery->type = POWER_SUPPLY_TYPE_BATTERY;
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300312 battery->properties = ds278x_battery_props;
313 battery->num_properties = ARRAY_SIZE(ds278x_battery_props);
314 battery->get_property = ds278x_battery_get_property;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200315 battery->external_power_changed = NULL;
316}
317
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300318static int ds278x_battery_remove(struct i2c_client *client)
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200319{
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300320 struct ds278x_info *info = i2c_get_clientdata(client);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200321
322 power_supply_unregister(&info->battery);
323 kfree(info->battery.name);
324
325 mutex_lock(&battery_lock);
326 idr_remove(&battery_id, info->id);
327 mutex_unlock(&battery_lock);
328
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300329 cancel_delayed_work(&info->bat_work);
330
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200331 kfree(info);
332 return 0;
333}
334
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100335#ifdef CONFIG_PM_SLEEP
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300336
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100337static int ds278x_suspend(struct device *dev)
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300338{
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100339 struct i2c_client *client = to_i2c_client(dev);
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300340 struct ds278x_info *info = i2c_get_clientdata(client);
341
342 cancel_delayed_work(&info->bat_work);
343 return 0;
344}
345
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100346static int ds278x_resume(struct device *dev)
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300347{
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100348 struct i2c_client *client = to_i2c_client(dev);
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300349 struct ds278x_info *info = i2c_get_clientdata(client);
350
351 schedule_delayed_work(&info->bat_work, DS278x_DELAY);
352 return 0;
353}
354
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100355static SIMPLE_DEV_PM_OPS(ds278x_battery_pm_ops, ds278x_suspend, ds278x_resume);
356#define DS278X_BATTERY_PM_OPS (&ds278x_battery_pm_ops)
357
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300358#else
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100359#define DS278X_BATTERY_PM_OPS NULL
360#endif /* CONFIG_PM_SLEEP */
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300361
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400362enum ds278x_num_id {
363 DS2782 = 0,
364 DS2786,
365};
366
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300367static struct ds278x_battery_ops ds278x_ops[] = {
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400368 [DS2782] = {
Peter Hueweeb9650d2010-05-13 01:54:57 +0200369 .get_battery_current = ds2782_get_current,
370 .get_battery_voltage = ds2782_get_voltage,
371 .get_battery_capacity = ds2782_get_capacity,
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300372 },
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400373 [DS2786] = {
Peter Hueweeb9650d2010-05-13 01:54:57 +0200374 .get_battery_current = ds2786_get_current,
375 .get_battery_voltage = ds2786_get_voltage,
376 .get_battery_capacity = ds2786_get_capacity,
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300377 }
378};
379
380static int ds278x_battery_probe(struct i2c_client *client,
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200381 const struct i2c_device_id *id)
382{
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300383 struct ds278x_platform_data *pdata = client->dev.platform_data;
384 struct ds278x_info *info;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200385 int ret;
386 int num;
387
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300388 /*
389 * ds2786 should have the sense resistor value set
390 * in the platform data
391 */
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400392 if (id->driver_data == DS2786 && !pdata) {
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300393 dev_err(&client->dev, "missing platform data for ds2786\n");
394 return -EINVAL;
395 }
396
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200397 /* Get an ID for this battery */
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200398 mutex_lock(&battery_lock);
Tejun Heo05e2cef2013-02-27 17:04:37 -0800399 ret = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200400 mutex_unlock(&battery_lock);
401 if (ret < 0)
402 goto fail_id;
Tejun Heo05e2cef2013-02-27 17:04:37 -0800403 num = ret;
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200404
405 info = kzalloc(sizeof(*info), GFP_KERNEL);
406 if (!info) {
407 ret = -ENOMEM;
408 goto fail_info;
409 }
410
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300411 info->battery.name = kasprintf(GFP_KERNEL, "%s-%d", client->name, num);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200412 if (!info->battery.name) {
413 ret = -ENOMEM;
414 goto fail_name;
415 }
416
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400417 if (id->driver_data == DS2786)
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300418 info->rsns = pdata->rsns;
419
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200420 i2c_set_clientdata(client, info);
421 info->client = client;
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300422 info->id = num;
423 info->ops = &ds278x_ops[id->driver_data];
424 ds278x_power_supply_init(&info->battery);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200425
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300426 info->capacity = 100;
427 info->status = POWER_SUPPLY_STATUS_FULL;
428
429 INIT_DELAYED_WORK(&info->bat_work, ds278x_bat_work);
430
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200431 ret = power_supply_register(&client->dev, &info->battery);
432 if (ret) {
433 dev_err(&client->dev, "failed to register battery\n");
434 goto fail_register;
Evgeny Romanov7cee9ae2013-01-10 12:24:48 +0300435 } else {
436 schedule_delayed_work(&info->bat_work, DS278x_DELAY);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200437 }
438
439 return 0;
440
441fail_register:
442 kfree(info->battery.name);
443fail_name:
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200444 kfree(info);
445fail_info:
446 mutex_lock(&battery_lock);
447 idr_remove(&battery_id, num);
448 mutex_unlock(&battery_lock);
449fail_id:
450 return ret;
451}
452
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300453static const struct i2c_device_id ds278x_id[] = {
Anton Vorontsovab6cc8f2010-04-26 22:10:52 +0400454 {"ds2782", DS2782},
455 {"ds2786", DS2786},
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200456 {},
457};
Axel Lin84ab16f2011-03-01 17:23:34 +0800458MODULE_DEVICE_TABLE(i2c, ds278x_id);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200459
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300460static struct i2c_driver ds278x_battery_driver = {
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200461 .driver = {
462 .name = "ds2782-battery",
Lars-Peter Clausencc6616f2013-03-10 14:34:05 +0100463 .pm = DS278X_BATTERY_PM_OPS,
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200464 },
Yulia Vilensky9b9ade62010-04-26 14:05:25 +0300465 .probe = ds278x_battery_probe,
466 .remove = ds278x_battery_remove,
467 .id_table = ds278x_id,
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200468};
Axel Lin5ff92e72012-01-21 14:42:54 +0800469module_i2c_driver(ds278x_battery_driver);
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200470
Ryan Mallon1c5454e2011-06-15 14:45:36 +1000471MODULE_AUTHOR("Ryan Mallon");
Ryan Mallonbfdb46c2009-06-18 11:26:26 +1200472MODULE_DESCRIPTION("Maxim/Dallas DS2782 Stand-Alone Fuel Gauage IC driver");
473MODULE_LICENSE("GPL");