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) | |
58 | ||
59 | /* STATUS2 register */ | |
60 | #define TEMP_STAT (3 << 5) | |
b1ad0796 | 61 | #define TEMP_SHIFT 5 |
2165c8a4 WK |
62 | |
63 | enum lp8727_dev_id { | |
64 | ID_NONE, | |
65 | ID_TA, | |
66 | ID_DEDICATED_CHG, | |
67 | ID_USB_CHG, | |
68 | ID_USB_DS, | |
69 | ID_MAX, | |
70 | }; | |
71 | ||
72 | enum lp8727_chg_stat { | |
73 | PRECHG, | |
74 | CC, | |
75 | CV, | |
76 | EOC, | |
77 | }; | |
78 | ||
b1ad0796 KM |
79 | enum lp8727_die_temp { |
80 | LP8788_TEMP_75C, | |
81 | LP8788_TEMP_95C, | |
82 | LP8788_TEMP_115C, | |
83 | LP8788_TEMP_135C, | |
84 | }; | |
85 | ||
2165c8a4 WK |
86 | struct lp8727_psy { |
87 | struct power_supply ac; | |
88 | struct power_supply usb; | |
89 | struct power_supply batt; | |
90 | }; | |
91 | ||
92 | struct lp8727_chg { | |
93 | struct device *dev; | |
94 | struct i2c_client *client; | |
95 | struct mutex xfer_lock; | |
96 | struct delayed_work work; | |
2165c8a4 WK |
97 | struct lp8727_platform_data *pdata; |
98 | struct lp8727_psy *psy; | |
99 | struct lp8727_chg_param *chg_parm; | |
100 | enum lp8727_dev_id devid; | |
60fd57e0 | 101 | unsigned long debounce_jiffies; |
d71fda01 | 102 | int irq; |
2165c8a4 WK |
103 | }; |
104 | ||
27aefa3b | 105 | static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len) |
2165c8a4 WK |
106 | { |
107 | s32 ret; | |
108 | ||
109 | mutex_lock(&pchg->xfer_lock); | |
110 | ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data); | |
111 | mutex_unlock(&pchg->xfer_lock); | |
112 | ||
113 | return (ret != len) ? -EIO : 0; | |
114 | } | |
115 | ||
27aefa3b | 116 | static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data) |
2165c8a4 | 117 | { |
27aefa3b KM |
118 | return lp8727_read_bytes(pchg, reg, data, 1); |
119 | } | |
120 | ||
121 | static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data) | |
122 | { | |
123 | int ret; | |
2165c8a4 WK |
124 | |
125 | mutex_lock(&pchg->xfer_lock); | |
27aefa3b | 126 | ret = i2c_smbus_write_byte_data(pchg->client, reg, data); |
2165c8a4 WK |
127 | mutex_unlock(&pchg->xfer_lock); |
128 | ||
129 | return ret; | |
130 | } | |
131 | ||
2165c8a4 WK |
132 | static int lp8727_is_charger_attached(const char *name, int id) |
133 | { | |
134 | if (name) { | |
135 | if (!strcmp(name, "ac")) | |
136 | return (id == ID_TA || id == ID_DEDICATED_CHG) ? 1 : 0; | |
137 | else if (!strcmp(name, "usb")) | |
138 | return (id == ID_USB_CHG) ? 1 : 0; | |
139 | } | |
140 | ||
141 | return (id >= ID_TA && id <= ID_USB_CHG) ? 1 : 0; | |
142 | } | |
143 | ||
7da6334e | 144 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
145 | { |
146 | u8 val; | |
7da6334e | 147 | int ret; |
638555d2 KM |
148 | u8 intstat[LP8788_NUM_INTREGS]; |
149 | ||
150 | /* clear interrupts */ | |
151 | ret = lp8727_read_bytes(pchg, INT1, intstat, LP8788_NUM_INTREGS); | |
152 | if (ret) | |
153 | return ret; | |
154 | ||
2165c8a4 WK |
155 | |
156 | val = ID200_EN | ADC_EN | CP_EN; | |
27aefa3b | 157 | ret = lp8727_write_byte(pchg, CTRL1, val); |
7da6334e KM |
158 | if (ret) |
159 | return ret; | |
2165c8a4 WK |
160 | |
161 | val = INT_EN | CHGDET_EN; | |
27aefa3b | 162 | ret = lp8727_write_byte(pchg, CTRL2, val); |
7da6334e KM |
163 | if (ret) |
164 | return ret; | |
165 | ||
166 | return 0; | |
2165c8a4 WK |
167 | } |
168 | ||
169 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
170 | { | |
171 | u8 val; | |
27aefa3b | 172 | lp8727_read_byte(pchg, STATUS1, &val); |
7336880e | 173 | return val & DCPORT; |
2165c8a4 WK |
174 | } |
175 | ||
176 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
177 | { | |
178 | u8 val; | |
27aefa3b | 179 | lp8727_read_byte(pchg, STATUS1, &val); |
7336880e | 180 | return val & CHPORT; |
2165c8a4 WK |
181 | } |
182 | ||
183 | static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) | |
184 | { | |
27aefa3b | 185 | lp8727_write_byte(pchg, SWCTRL, sw); |
2165c8a4 WK |
186 | } |
187 | ||
188 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
189 | { | |
318cb389 | 190 | struct lp8727_platform_data *pdata = pchg->pdata; |
2165c8a4 WK |
191 | u8 devid = ID_NONE; |
192 | u8 swctrl = SW_DM1_HiZ | SW_DP2_HiZ; | |
193 | ||
194 | switch (id) { | |
195 | case 0x5: | |
196 | devid = ID_TA; | |
318cb389 | 197 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
198 | break; |
199 | case 0xB: | |
200 | if (lp8727_is_dedicated_charger(pchg)) { | |
318cb389 | 201 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
202 | devid = ID_DEDICATED_CHG; |
203 | } else if (lp8727_is_usb_charger(pchg)) { | |
318cb389 | 204 | pchg->chg_parm = pdata ? pdata->usb : NULL; |
2165c8a4 WK |
205 | devid = ID_USB_CHG; |
206 | swctrl = SW_DM1_DM | SW_DP2_DP; | |
207 | } else if (vbusin) { | |
208 | devid = ID_USB_DS; | |
209 | swctrl = SW_DM1_DM | SW_DP2_DP; | |
210 | } | |
211 | break; | |
212 | default: | |
213 | devid = ID_NONE; | |
214 | pchg->chg_parm = NULL; | |
215 | break; | |
216 | } | |
217 | ||
218 | pchg->devid = devid; | |
219 | lp8727_ctrl_switch(pchg, swctrl); | |
220 | } | |
221 | ||
222 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
223 | { | |
224 | u8 val; | |
225 | ||
27aefa3b | 226 | lp8727_read_byte(pchg, CTRL2, &val); |
2165c8a4 | 227 | val |= CHGDET_EN; |
27aefa3b | 228 | lp8727_write_byte(pchg, CTRL2, val); |
2165c8a4 WK |
229 | } |
230 | ||
231 | static void lp8727_delayed_func(struct work_struct *_work) | |
232 | { | |
233 | u8 intstat[2], idno, vbus; | |
234 | struct lp8727_chg *pchg = | |
235 | container_of(_work, struct lp8727_chg, work.work); | |
236 | ||
27aefa3b | 237 | if (lp8727_read_bytes(pchg, INT1, intstat, 2)) { |
2165c8a4 WK |
238 | dev_err(pchg->dev, "can not read INT registers\n"); |
239 | return; | |
240 | } | |
241 | ||
242 | idno = intstat[0] & IDNO; | |
243 | vbus = intstat[0] & VBUS; | |
244 | ||
245 | lp8727_id_detection(pchg, idno, vbus); | |
246 | lp8727_enable_chgdet(pchg); | |
247 | ||
248 | power_supply_changed(&pchg->psy->ac); | |
249 | power_supply_changed(&pchg->psy->usb); | |
250 | power_supply_changed(&pchg->psy->batt); | |
251 | } | |
252 | ||
253 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
254 | { | |
255 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 256 | |
2a092582 | 257 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
258 | return IRQ_HANDLED; |
259 | } | |
260 | ||
d71fda01 | 261 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 262 | { |
d71fda01 KM |
263 | int ret; |
264 | int irq = pchg->client->irq; | |
60fd57e0 KM |
265 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
266 | DEFAULT_DEBOUNCE_MSEC; | |
267 | ||
2165c8a4 WK |
268 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
269 | ||
d71fda01 KM |
270 | if (irq <= 0) { |
271 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
272 | return 0; | |
273 | } | |
60fd57e0 | 274 | |
d71fda01 | 275 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 276 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
277 | "lp8727_irq", pchg); |
278 | ||
279 | if (ret) | |
280 | return ret; | |
281 | ||
282 | pchg->irq = irq; | |
283 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
289 | { | |
290 | cancel_delayed_work_sync(&pchg->work); | |
291 | ||
292 | if (pchg->irq) | |
293 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
294 | } |
295 | ||
296 | static enum power_supply_property lp8727_charger_prop[] = { | |
297 | POWER_SUPPLY_PROP_ONLINE, | |
298 | }; | |
299 | ||
300 | static enum power_supply_property lp8727_battery_prop[] = { | |
301 | POWER_SUPPLY_PROP_STATUS, | |
302 | POWER_SUPPLY_PROP_HEALTH, | |
303 | POWER_SUPPLY_PROP_PRESENT, | |
304 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
305 | POWER_SUPPLY_PROP_CAPACITY, | |
306 | POWER_SUPPLY_PROP_TEMP, | |
307 | }; | |
308 | ||
309 | static char *battery_supplied_to[] = { | |
310 | "main_batt", | |
311 | }; | |
312 | ||
313 | static int lp8727_charger_get_property(struct power_supply *psy, | |
314 | enum power_supply_property psp, | |
315 | union power_supply_propval *val) | |
316 | { | |
317 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318 | ||
ce09affc | 319 | if (psp == POWER_SUPPLY_PROP_ONLINE) |
2165c8a4 WK |
320 | val->intval = lp8727_is_charger_attached(psy->name, |
321 | pchg->devid); | |
2165c8a4 WK |
322 | |
323 | return 0; | |
324 | } | |
325 | ||
b1ad0796 KM |
326 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
327 | { | |
328 | switch (temp) { | |
329 | case LP8788_TEMP_95C: | |
330 | case LP8788_TEMP_115C: | |
331 | case LP8788_TEMP_135C: | |
332 | return true; | |
333 | default: | |
334 | return false; | |
335 | } | |
336 | } | |
337 | ||
2165c8a4 WK |
338 | static int lp8727_battery_get_property(struct power_supply *psy, |
339 | enum power_supply_property psp, | |
340 | union power_supply_propval *val) | |
341 | { | |
342 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 343 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 344 | enum lp8727_die_temp temp; |
2165c8a4 WK |
345 | u8 read; |
346 | ||
347 | switch (psp) { | |
348 | case POWER_SUPPLY_PROP_STATUS: | |
349 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
27aefa3b | 350 | lp8727_read_byte(pchg, STATUS1, &read); |
2165c8a4 WK |
351 | if (((read & CHGSTAT) >> 4) == EOC) |
352 | val->intval = POWER_SUPPLY_STATUS_FULL; | |
353 | else | |
354 | val->intval = POWER_SUPPLY_STATUS_CHARGING; | |
355 | } else { | |
356 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
357 | } | |
358 | break; | |
359 | case POWER_SUPPLY_PROP_HEALTH: | |
27aefa3b | 360 | lp8727_read_byte(pchg, STATUS2, &read); |
b1ad0796 KM |
361 | temp = (read & TEMP_STAT) >> TEMP_SHIFT; |
362 | ||
363 | val->intval = lp8727_is_high_temperature(temp) ? | |
364 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
365 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
366 | break; |
367 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
368 | if (!pdata) |
369 | return -EINVAL; | |
370 | ||
371 | if (pdata->get_batt_present) | |
2165c8a4 WK |
372 | val->intval = pchg->pdata->get_batt_present(); |
373 | break; | |
374 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
375 | if (!pdata) |
376 | return -EINVAL; | |
377 | ||
378 | if (pdata->get_batt_level) | |
2165c8a4 WK |
379 | val->intval = pchg->pdata->get_batt_level(); |
380 | break; | |
381 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
382 | if (!pdata) |
383 | return -EINVAL; | |
384 | ||
385 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
386 | val->intval = pchg->pdata->get_batt_capacity(); |
387 | break; | |
388 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
389 | if (!pdata) |
390 | return -EINVAL; | |
391 | ||
392 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
393 | val->intval = pchg->pdata->get_batt_temp(); |
394 | break; | |
395 | default: | |
396 | break; | |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static void lp8727_charger_changed(struct power_supply *psy) | |
403 | { | |
404 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
405 | u8 val; | |
406 | u8 eoc_level, ichg; | |
407 | ||
408 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
409 | if (pchg->chg_parm) { | |
410 | eoc_level = pchg->chg_parm->eoc_level; | |
411 | ichg = pchg->chg_parm->ichg; | |
412 | val = (ichg << 4) | eoc_level; | |
27aefa3b | 413 | lp8727_write_byte(pchg, CHGCTRL2, val); |
2165c8a4 WK |
414 | } |
415 | } | |
416 | } | |
417 | ||
418 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
419 | { | |
420 | struct lp8727_psy *psy; | |
421 | ||
74727c57 | 422 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 423 | if (!psy) |
6297b5e5 | 424 | return -ENOMEM; |
2165c8a4 WK |
425 | |
426 | pchg->psy = psy; | |
427 | ||
428 | psy->ac.name = "ac"; | |
429 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
430 | psy->ac.properties = lp8727_charger_prop; | |
431 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
432 | psy->ac.get_property = lp8727_charger_get_property; | |
433 | psy->ac.supplied_to = battery_supplied_to; | |
434 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
435 | ||
436 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 437 | goto err_psy_ac; |
2165c8a4 WK |
438 | |
439 | psy->usb.name = "usb"; | |
440 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
441 | psy->usb.properties = lp8727_charger_prop; | |
442 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
443 | psy->usb.get_property = lp8727_charger_get_property; | |
444 | psy->usb.supplied_to = battery_supplied_to; | |
445 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
446 | ||
447 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 448 | goto err_psy_usb; |
2165c8a4 WK |
449 | |
450 | psy->batt.name = "main_batt"; | |
451 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
452 | psy->batt.properties = lp8727_battery_prop; | |
453 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
454 | psy->batt.get_property = lp8727_battery_get_property; | |
455 | psy->batt.external_power_changed = lp8727_charger_changed; | |
456 | ||
457 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 458 | goto err_psy_batt; |
2165c8a4 WK |
459 | |
460 | return 0; | |
461 | ||
6297b5e5 DN |
462 | err_psy_batt: |
463 | power_supply_unregister(&psy->usb); | |
464 | err_psy_usb: | |
465 | power_supply_unregister(&psy->ac); | |
466 | err_psy_ac: | |
2165c8a4 WK |
467 | return -EPERM; |
468 | } | |
469 | ||
470 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
471 | { | |
472 | struct lp8727_psy *psy = pchg->psy; | |
473 | ||
ce09affc KM |
474 | if (!psy) |
475 | return; | |
476 | ||
477 | power_supply_unregister(&psy->ac); | |
478 | power_supply_unregister(&psy->usb); | |
479 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
480 | } |
481 | ||
482 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
483 | { | |
484 | struct lp8727_chg *pchg; | |
485 | int ret; | |
486 | ||
998a8e7a KM |
487 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
488 | return -EIO; | |
489 | ||
74727c57 | 490 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
491 | if (!pchg) |
492 | return -ENOMEM; | |
493 | ||
494 | pchg->client = cl; | |
495 | pchg->dev = &cl->dev; | |
496 | pchg->pdata = cl->dev.platform_data; | |
497 | i2c_set_clientdata(cl, pchg); | |
498 | ||
499 | mutex_init(&pchg->xfer_lock); | |
500 | ||
7da6334e KM |
501 | ret = lp8727_init_device(pchg); |
502 | if (ret) { | |
503 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 504 | return ret; |
7da6334e KM |
505 | } |
506 | ||
fb9adc51 | 507 | ret = lp8727_register_psy(pchg); |
7da6334e | 508 | if (ret) { |
fb9adc51 KM |
509 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
510 | return ret; | |
7da6334e | 511 | } |
2165c8a4 | 512 | |
d71fda01 | 513 | ret = lp8727_setup_irq(pchg); |
7da6334e | 514 | if (ret) { |
fb9adc51 KM |
515 | dev_err(pchg->dev, "irq handler err: %d", ret); |
516 | lp8727_unregister_psy(pchg); | |
517 | return ret; | |
7da6334e | 518 | } |
2165c8a4 WK |
519 | |
520 | return 0; | |
521 | } | |
522 | ||
523 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
524 | { | |
525 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
526 | ||
d71fda01 | 527 | lp8727_release_irq(pchg); |
fb9adc51 | 528 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
529 | return 0; |
530 | } | |
531 | ||
532 | static const struct i2c_device_id lp8727_ids[] = { | |
533 | {"lp8727", 0}, | |
455a0e2c | 534 | { } |
2165c8a4 | 535 | }; |
e2c5f7db | 536 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
537 | |
538 | static struct i2c_driver lp8727_driver = { | |
539 | .driver = { | |
540 | .name = "lp8727", | |
541 | }, | |
542 | .probe = lp8727_probe, | |
543 | .remove = __devexit_p(lp8727_remove), | |
544 | .id_table = lp8727_ids, | |
545 | }; | |
5ff92e7a | 546 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 547 | |
e39b828f | 548 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
7336880e KM |
549 | MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, " |
550 | "Daniel Jeong <daniel.jeong@ti.com>"); | |
2165c8a4 | 551 | MODULE_LICENSE("GPL"); |