Commit | Line | Data |
---|---|---|
2165c8a4 | 1 | /* |
f7bae49a | 2 | * Driver for LP8727 Micro/Mini USB IC with integrated charger |
2165c8a4 | 3 | * |
e39b828f | 4 | * Copyright (C) 2011 Texas Instruments |
2165c8a4 WK |
5 | * Copyright (C) 2011 National Semiconductor |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/interrupt.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/power_supply.h> | |
1aebb097 | 18 | #include <linux/platform_data/lp8727.h> |
2165c8a4 | 19 | |
638555d2 | 20 | #define LP8788_NUM_INTREGS 2 |
60fd57e0 | 21 | #define DEFAULT_DEBOUNCE_MSEC 270 |
2165c8a4 WK |
22 | |
23 | /* Registers */ | |
24 | #define CTRL1 0x1 | |
25 | #define CTRL2 0x2 | |
26 | #define SWCTRL 0x3 | |
27 | #define INT1 0x4 | |
28 | #define INT2 0x5 | |
29 | #define STATUS1 0x6 | |
7336880e | 30 | #define STATUS2 0x7 |
2165c8a4 WK |
31 | #define CHGCTRL2 0x9 |
32 | ||
33 | /* CTRL1 register */ | |
34 | #define CP_EN (1 << 0) | |
35 | #define ADC_EN (1 << 1) | |
36 | #define ID200_EN (1 << 4) | |
37 | ||
38 | /* CTRL2 register */ | |
39 | #define CHGDET_EN (1 << 1) | |
40 | #define INT_EN (1 << 6) | |
41 | ||
42 | /* SWCTRL register */ | |
43 | #define SW_DM1_DM (0x0 << 0) | |
44 | #define SW_DM1_U1 (0x1 << 0) | |
45 | #define SW_DM1_HiZ (0x7 << 0) | |
46 | #define SW_DP2_DP (0x0 << 3) | |
47 | #define SW_DP2_U2 (0x1 << 3) | |
48 | #define SW_DP2_HiZ (0x7 << 3) | |
49 | ||
50 | /* INT1 register */ | |
51 | #define IDNO (0xF << 0) | |
52 | #define VBUS (1 << 4) | |
53 | ||
54 | /* STATUS1 register */ | |
55 | #define CHGSTAT (3 << 4) | |
56 | #define CHPORT (1 << 6) | |
57 | #define DCPORT (1 << 7) | |
faaae9bb | 58 | #define LP8727_STAT_EOC 0x30 |
2165c8a4 WK |
59 | |
60 | /* STATUS2 register */ | |
61 | #define TEMP_STAT (3 << 5) | |
b1ad0796 | 62 | #define TEMP_SHIFT 5 |
2165c8a4 WK |
63 | |
64 | enum lp8727_dev_id { | |
65 | ID_NONE, | |
66 | ID_TA, | |
67 | ID_DEDICATED_CHG, | |
68 | ID_USB_CHG, | |
69 | ID_USB_DS, | |
70 | ID_MAX, | |
71 | }; | |
72 | ||
b1ad0796 KM |
73 | enum lp8727_die_temp { |
74 | LP8788_TEMP_75C, | |
75 | LP8788_TEMP_95C, | |
76 | LP8788_TEMP_115C, | |
77 | LP8788_TEMP_135C, | |
78 | }; | |
79 | ||
2165c8a4 WK |
80 | struct lp8727_psy { |
81 | struct power_supply ac; | |
82 | struct power_supply usb; | |
83 | struct power_supply batt; | |
84 | }; | |
85 | ||
86 | struct lp8727_chg { | |
87 | struct device *dev; | |
88 | struct i2c_client *client; | |
89 | struct mutex xfer_lock; | |
90 | struct delayed_work work; | |
2165c8a4 WK |
91 | struct lp8727_platform_data *pdata; |
92 | struct lp8727_psy *psy; | |
93 | struct lp8727_chg_param *chg_parm; | |
94 | enum lp8727_dev_id devid; | |
60fd57e0 | 95 | unsigned long debounce_jiffies; |
d71fda01 | 96 | int irq; |
2165c8a4 WK |
97 | }; |
98 | ||
27aefa3b | 99 | static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len) |
2165c8a4 WK |
100 | { |
101 | s32 ret; | |
102 | ||
103 | mutex_lock(&pchg->xfer_lock); | |
104 | ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data); | |
105 | mutex_unlock(&pchg->xfer_lock); | |
106 | ||
107 | return (ret != len) ? -EIO : 0; | |
108 | } | |
109 | ||
27aefa3b | 110 | static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data) |
2165c8a4 | 111 | { |
27aefa3b KM |
112 | return lp8727_read_bytes(pchg, reg, data, 1); |
113 | } | |
114 | ||
115 | static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data) | |
116 | { | |
117 | int ret; | |
2165c8a4 WK |
118 | |
119 | mutex_lock(&pchg->xfer_lock); | |
27aefa3b | 120 | ret = i2c_smbus_write_byte_data(pchg->client, reg, data); |
2165c8a4 WK |
121 | mutex_unlock(&pchg->xfer_lock); |
122 | ||
123 | return ret; | |
124 | } | |
125 | ||
2165c8a4 WK |
126 | static int lp8727_is_charger_attached(const char *name, int id) |
127 | { | |
128 | if (name) { | |
129 | if (!strcmp(name, "ac")) | |
130 | return (id == ID_TA || id == ID_DEDICATED_CHG) ? 1 : 0; | |
131 | else if (!strcmp(name, "usb")) | |
132 | return (id == ID_USB_CHG) ? 1 : 0; | |
133 | } | |
134 | ||
135 | return (id >= ID_TA && id <= ID_USB_CHG) ? 1 : 0; | |
136 | } | |
137 | ||
7da6334e | 138 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
139 | { |
140 | u8 val; | |
7da6334e | 141 | int ret; |
638555d2 KM |
142 | u8 intstat[LP8788_NUM_INTREGS]; |
143 | ||
144 | /* clear interrupts */ | |
145 | ret = lp8727_read_bytes(pchg, INT1, intstat, LP8788_NUM_INTREGS); | |
146 | if (ret) | |
147 | return ret; | |
148 | ||
2165c8a4 WK |
149 | |
150 | val = ID200_EN | ADC_EN | CP_EN; | |
27aefa3b | 151 | ret = lp8727_write_byte(pchg, CTRL1, val); |
7da6334e KM |
152 | if (ret) |
153 | return ret; | |
2165c8a4 WK |
154 | |
155 | val = INT_EN | CHGDET_EN; | |
27aefa3b | 156 | ret = lp8727_write_byte(pchg, CTRL2, val); |
7da6334e KM |
157 | if (ret) |
158 | return ret; | |
159 | ||
160 | return 0; | |
2165c8a4 WK |
161 | } |
162 | ||
163 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
164 | { | |
165 | u8 val; | |
27aefa3b | 166 | lp8727_read_byte(pchg, STATUS1, &val); |
7336880e | 167 | return val & DCPORT; |
2165c8a4 WK |
168 | } |
169 | ||
170 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
171 | { | |
172 | u8 val; | |
27aefa3b | 173 | lp8727_read_byte(pchg, STATUS1, &val); |
7336880e | 174 | return val & CHPORT; |
2165c8a4 WK |
175 | } |
176 | ||
177 | static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) | |
178 | { | |
27aefa3b | 179 | lp8727_write_byte(pchg, SWCTRL, sw); |
2165c8a4 WK |
180 | } |
181 | ||
182 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
183 | { | |
318cb389 | 184 | struct lp8727_platform_data *pdata = pchg->pdata; |
2165c8a4 WK |
185 | u8 devid = ID_NONE; |
186 | u8 swctrl = SW_DM1_HiZ | SW_DP2_HiZ; | |
187 | ||
188 | switch (id) { | |
189 | case 0x5: | |
190 | devid = ID_TA; | |
318cb389 | 191 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
192 | break; |
193 | case 0xB: | |
194 | if (lp8727_is_dedicated_charger(pchg)) { | |
318cb389 | 195 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
196 | devid = ID_DEDICATED_CHG; |
197 | } else if (lp8727_is_usb_charger(pchg)) { | |
318cb389 | 198 | pchg->chg_parm = pdata ? pdata->usb : NULL; |
2165c8a4 WK |
199 | devid = ID_USB_CHG; |
200 | swctrl = SW_DM1_DM | SW_DP2_DP; | |
201 | } else if (vbusin) { | |
202 | devid = ID_USB_DS; | |
203 | swctrl = SW_DM1_DM | SW_DP2_DP; | |
204 | } | |
205 | break; | |
206 | default: | |
207 | devid = ID_NONE; | |
208 | pchg->chg_parm = NULL; | |
209 | break; | |
210 | } | |
211 | ||
212 | pchg->devid = devid; | |
213 | lp8727_ctrl_switch(pchg, swctrl); | |
214 | } | |
215 | ||
216 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
217 | { | |
218 | u8 val; | |
219 | ||
27aefa3b | 220 | lp8727_read_byte(pchg, CTRL2, &val); |
2165c8a4 | 221 | val |= CHGDET_EN; |
27aefa3b | 222 | lp8727_write_byte(pchg, CTRL2, val); |
2165c8a4 WK |
223 | } |
224 | ||
225 | static void lp8727_delayed_func(struct work_struct *_work) | |
226 | { | |
227 | u8 intstat[2], idno, vbus; | |
228 | struct lp8727_chg *pchg = | |
229 | container_of(_work, struct lp8727_chg, work.work); | |
230 | ||
27aefa3b | 231 | if (lp8727_read_bytes(pchg, INT1, intstat, 2)) { |
2165c8a4 WK |
232 | dev_err(pchg->dev, "can not read INT registers\n"); |
233 | return; | |
234 | } | |
235 | ||
236 | idno = intstat[0] & IDNO; | |
237 | vbus = intstat[0] & VBUS; | |
238 | ||
239 | lp8727_id_detection(pchg, idno, vbus); | |
240 | lp8727_enable_chgdet(pchg); | |
241 | ||
242 | power_supply_changed(&pchg->psy->ac); | |
243 | power_supply_changed(&pchg->psy->usb); | |
244 | power_supply_changed(&pchg->psy->batt); | |
245 | } | |
246 | ||
247 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
248 | { | |
249 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 250 | |
2a092582 | 251 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
252 | return IRQ_HANDLED; |
253 | } | |
254 | ||
d71fda01 | 255 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 256 | { |
d71fda01 KM |
257 | int ret; |
258 | int irq = pchg->client->irq; | |
60fd57e0 KM |
259 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
260 | DEFAULT_DEBOUNCE_MSEC; | |
261 | ||
2165c8a4 WK |
262 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
263 | ||
d71fda01 KM |
264 | if (irq <= 0) { |
265 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
266 | return 0; | |
267 | } | |
60fd57e0 | 268 | |
d71fda01 | 269 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 270 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
271 | "lp8727_irq", pchg); |
272 | ||
273 | if (ret) | |
274 | return ret; | |
275 | ||
276 | pchg->irq = irq; | |
277 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
278 | ||
279 | return 0; | |
280 | } | |
281 | ||
282 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
283 | { | |
284 | cancel_delayed_work_sync(&pchg->work); | |
285 | ||
286 | if (pchg->irq) | |
287 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
288 | } |
289 | ||
290 | static enum power_supply_property lp8727_charger_prop[] = { | |
291 | POWER_SUPPLY_PROP_ONLINE, | |
292 | }; | |
293 | ||
294 | static enum power_supply_property lp8727_battery_prop[] = { | |
295 | POWER_SUPPLY_PROP_STATUS, | |
296 | POWER_SUPPLY_PROP_HEALTH, | |
297 | POWER_SUPPLY_PROP_PRESENT, | |
298 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
299 | POWER_SUPPLY_PROP_CAPACITY, | |
300 | POWER_SUPPLY_PROP_TEMP, | |
301 | }; | |
302 | ||
303 | static char *battery_supplied_to[] = { | |
304 | "main_batt", | |
305 | }; | |
306 | ||
307 | static int lp8727_charger_get_property(struct power_supply *psy, | |
308 | enum power_supply_property psp, | |
309 | union power_supply_propval *val) | |
310 | { | |
311 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
312 | ||
ce09affc | 313 | if (psp == POWER_SUPPLY_PROP_ONLINE) |
2165c8a4 WK |
314 | val->intval = lp8727_is_charger_attached(psy->name, |
315 | pchg->devid); | |
2165c8a4 WK |
316 | |
317 | return 0; | |
318 | } | |
319 | ||
b1ad0796 KM |
320 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
321 | { | |
322 | switch (temp) { | |
323 | case LP8788_TEMP_95C: | |
324 | case LP8788_TEMP_115C: | |
325 | case LP8788_TEMP_135C: | |
326 | return true; | |
327 | default: | |
328 | return false; | |
329 | } | |
330 | } | |
331 | ||
2165c8a4 WK |
332 | static int lp8727_battery_get_property(struct power_supply *psy, |
333 | enum power_supply_property psp, | |
334 | union power_supply_propval *val) | |
335 | { | |
336 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 337 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 338 | enum lp8727_die_temp temp; |
2165c8a4 WK |
339 | u8 read; |
340 | ||
341 | switch (psp) { | |
342 | case POWER_SUPPLY_PROP_STATUS: | |
343 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
27aefa3b | 344 | lp8727_read_byte(pchg, STATUS1, &read); |
faaae9bb KM |
345 | |
346 | val->intval = (read & CHGSTAT) == LP8727_STAT_EOC ? | |
347 | POWER_SUPPLY_STATUS_FULL : | |
348 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
349 | } else { |
350 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
351 | } | |
352 | break; | |
353 | case POWER_SUPPLY_PROP_HEALTH: | |
27aefa3b | 354 | lp8727_read_byte(pchg, STATUS2, &read); |
b1ad0796 KM |
355 | temp = (read & TEMP_STAT) >> TEMP_SHIFT; |
356 | ||
357 | val->intval = lp8727_is_high_temperature(temp) ? | |
358 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
359 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
360 | break; |
361 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
362 | if (!pdata) |
363 | return -EINVAL; | |
364 | ||
365 | if (pdata->get_batt_present) | |
2165c8a4 WK |
366 | val->intval = pchg->pdata->get_batt_present(); |
367 | break; | |
368 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
369 | if (!pdata) |
370 | return -EINVAL; | |
371 | ||
372 | if (pdata->get_batt_level) | |
2165c8a4 WK |
373 | val->intval = pchg->pdata->get_batt_level(); |
374 | break; | |
375 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
376 | if (!pdata) |
377 | return -EINVAL; | |
378 | ||
379 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
380 | val->intval = pchg->pdata->get_batt_capacity(); |
381 | break; | |
382 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
383 | if (!pdata) |
384 | return -EINVAL; | |
385 | ||
386 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
387 | val->intval = pchg->pdata->get_batt_temp(); |
388 | break; | |
389 | default: | |
390 | break; | |
391 | } | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | static void lp8727_charger_changed(struct power_supply *psy) | |
397 | { | |
398 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
399 | u8 val; | |
400 | u8 eoc_level, ichg; | |
401 | ||
402 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
403 | if (pchg->chg_parm) { | |
404 | eoc_level = pchg->chg_parm->eoc_level; | |
405 | ichg = pchg->chg_parm->ichg; | |
406 | val = (ichg << 4) | eoc_level; | |
27aefa3b | 407 | lp8727_write_byte(pchg, CHGCTRL2, val); |
2165c8a4 WK |
408 | } |
409 | } | |
410 | } | |
411 | ||
412 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
413 | { | |
414 | struct lp8727_psy *psy; | |
415 | ||
74727c57 | 416 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 417 | if (!psy) |
6297b5e5 | 418 | return -ENOMEM; |
2165c8a4 WK |
419 | |
420 | pchg->psy = psy; | |
421 | ||
422 | psy->ac.name = "ac"; | |
423 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
424 | psy->ac.properties = lp8727_charger_prop; | |
425 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
426 | psy->ac.get_property = lp8727_charger_get_property; | |
427 | psy->ac.supplied_to = battery_supplied_to; | |
428 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
429 | ||
430 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 431 | goto err_psy_ac; |
2165c8a4 WK |
432 | |
433 | psy->usb.name = "usb"; | |
434 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
435 | psy->usb.properties = lp8727_charger_prop; | |
436 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
437 | psy->usb.get_property = lp8727_charger_get_property; | |
438 | psy->usb.supplied_to = battery_supplied_to; | |
439 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
440 | ||
441 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 442 | goto err_psy_usb; |
2165c8a4 WK |
443 | |
444 | psy->batt.name = "main_batt"; | |
445 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
446 | psy->batt.properties = lp8727_battery_prop; | |
447 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
448 | psy->batt.get_property = lp8727_battery_get_property; | |
449 | psy->batt.external_power_changed = lp8727_charger_changed; | |
450 | ||
451 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 452 | goto err_psy_batt; |
2165c8a4 WK |
453 | |
454 | return 0; | |
455 | ||
6297b5e5 DN |
456 | err_psy_batt: |
457 | power_supply_unregister(&psy->usb); | |
458 | err_psy_usb: | |
459 | power_supply_unregister(&psy->ac); | |
460 | err_psy_ac: | |
2165c8a4 WK |
461 | return -EPERM; |
462 | } | |
463 | ||
464 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
465 | { | |
466 | struct lp8727_psy *psy = pchg->psy; | |
467 | ||
ce09affc KM |
468 | if (!psy) |
469 | return; | |
470 | ||
471 | power_supply_unregister(&psy->ac); | |
472 | power_supply_unregister(&psy->usb); | |
473 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
474 | } |
475 | ||
476 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
477 | { | |
478 | struct lp8727_chg *pchg; | |
479 | int ret; | |
480 | ||
998a8e7a KM |
481 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
482 | return -EIO; | |
483 | ||
74727c57 | 484 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
485 | if (!pchg) |
486 | return -ENOMEM; | |
487 | ||
488 | pchg->client = cl; | |
489 | pchg->dev = &cl->dev; | |
490 | pchg->pdata = cl->dev.platform_data; | |
491 | i2c_set_clientdata(cl, pchg); | |
492 | ||
493 | mutex_init(&pchg->xfer_lock); | |
494 | ||
7da6334e KM |
495 | ret = lp8727_init_device(pchg); |
496 | if (ret) { | |
497 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 498 | return ret; |
7da6334e KM |
499 | } |
500 | ||
fb9adc51 | 501 | ret = lp8727_register_psy(pchg); |
7da6334e | 502 | if (ret) { |
fb9adc51 KM |
503 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
504 | return ret; | |
7da6334e | 505 | } |
2165c8a4 | 506 | |
d71fda01 | 507 | ret = lp8727_setup_irq(pchg); |
7da6334e | 508 | if (ret) { |
fb9adc51 KM |
509 | dev_err(pchg->dev, "irq handler err: %d", ret); |
510 | lp8727_unregister_psy(pchg); | |
511 | return ret; | |
7da6334e | 512 | } |
2165c8a4 WK |
513 | |
514 | return 0; | |
515 | } | |
516 | ||
517 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
518 | { | |
519 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
520 | ||
d71fda01 | 521 | lp8727_release_irq(pchg); |
fb9adc51 | 522 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
523 | return 0; |
524 | } | |
525 | ||
526 | static const struct i2c_device_id lp8727_ids[] = { | |
527 | {"lp8727", 0}, | |
455a0e2c | 528 | { } |
2165c8a4 | 529 | }; |
e2c5f7db | 530 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
531 | |
532 | static struct i2c_driver lp8727_driver = { | |
533 | .driver = { | |
534 | .name = "lp8727", | |
535 | }, | |
536 | .probe = lp8727_probe, | |
537 | .remove = __devexit_p(lp8727_remove), | |
538 | .id_table = lp8727_ids, | |
539 | }; | |
5ff92e7a | 540 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 541 | |
e39b828f | 542 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
7336880e KM |
543 | MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, " |
544 | "Daniel Jeong <daniel.jeong@ti.com>"); | |
2165c8a4 | 545 | MODULE_LICENSE("GPL"); |