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 */ | |
6029719f KM |
24 | #define LP8727_CTRL1 0x1 |
25 | #define LP8727_CTRL2 0x2 | |
26 | #define LP8727_SWCTRL 0x3 | |
27 | #define LP8727_INT1 0x4 | |
28 | #define LP8727_INT2 0x5 | |
29 | #define LP8727_STATUS1 0x6 | |
30 | #define LP8727_STATUS2 0x7 | |
31 | #define LP8727_CHGCTRL2 0x9 | |
2165c8a4 WK |
32 | |
33 | /* CTRL1 register */ | |
6029719f KM |
34 | #define LP8727_CP_EN BIT(0) |
35 | #define LP8727_ADC_EN BIT(1) | |
36 | #define LP8727_ID200_EN BIT(4) | |
2165c8a4 WK |
37 | |
38 | /* CTRL2 register */ | |
6029719f KM |
39 | #define LP8727_CHGDET_EN BIT(1) |
40 | #define LP8727_INT_EN BIT(6) | |
2165c8a4 WK |
41 | |
42 | /* SWCTRL register */ | |
6029719f KM |
43 | #define LP8727_SW_DM1_DM (0x0 << 0) |
44 | #define LP8727_SW_DM1_HiZ (0x7 << 0) | |
45 | #define LP8727_SW_DP2_DP (0x0 << 3) | |
46 | #define LP8727_SW_DP2_HiZ (0x7 << 3) | |
2165c8a4 WK |
47 | |
48 | /* INT1 register */ | |
6029719f KM |
49 | #define LP8727_IDNO (0xF << 0) |
50 | #define LP8727_VBUS BIT(4) | |
2165c8a4 WK |
51 | |
52 | /* STATUS1 register */ | |
6029719f KM |
53 | #define LP8727_CHGSTAT (3 << 4) |
54 | #define LP8727_CHPORT BIT(6) | |
55 | #define LP8727_DCPORT BIT(7) | |
56 | #define LP8727_STAT_EOC 0x30 | |
2165c8a4 WK |
57 | |
58 | /* STATUS2 register */ | |
6029719f KM |
59 | #define LP8727_TEMP_STAT (3 << 5) |
60 | #define LP8727_TEMP_SHIFT 5 | |
2165c8a4 WK |
61 | |
62 | enum lp8727_dev_id { | |
6029719f KM |
63 | LP8727_ID_NONE, |
64 | LP8727_ID_TA, | |
65 | LP8727_ID_DEDICATED_CHG, | |
66 | LP8727_ID_USB_CHG, | |
67 | LP8727_ID_USB_DS, | |
68 | LP8727_ID_MAX, | |
2165c8a4 WK |
69 | }; |
70 | ||
b1ad0796 KM |
71 | enum lp8727_die_temp { |
72 | LP8788_TEMP_75C, | |
73 | LP8788_TEMP_95C, | |
74 | LP8788_TEMP_115C, | |
75 | LP8788_TEMP_135C, | |
76 | }; | |
77 | ||
2165c8a4 WK |
78 | struct lp8727_psy { |
79 | struct power_supply ac; | |
80 | struct power_supply usb; | |
81 | struct power_supply batt; | |
82 | }; | |
83 | ||
84 | struct lp8727_chg { | |
85 | struct device *dev; | |
86 | struct i2c_client *client; | |
87 | struct mutex xfer_lock; | |
88 | struct delayed_work work; | |
2165c8a4 WK |
89 | struct lp8727_platform_data *pdata; |
90 | struct lp8727_psy *psy; | |
91 | struct lp8727_chg_param *chg_parm; | |
92 | enum lp8727_dev_id devid; | |
60fd57e0 | 93 | unsigned long debounce_jiffies; |
d71fda01 | 94 | int irq; |
2165c8a4 WK |
95 | }; |
96 | ||
27aefa3b | 97 | static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len) |
2165c8a4 WK |
98 | { |
99 | s32 ret; | |
100 | ||
101 | mutex_lock(&pchg->xfer_lock); | |
102 | ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data); | |
103 | mutex_unlock(&pchg->xfer_lock); | |
104 | ||
105 | return (ret != len) ? -EIO : 0; | |
106 | } | |
107 | ||
27aefa3b | 108 | static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data) |
2165c8a4 | 109 | { |
27aefa3b KM |
110 | return lp8727_read_bytes(pchg, reg, data, 1); |
111 | } | |
112 | ||
113 | static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data) | |
114 | { | |
115 | int ret; | |
2165c8a4 WK |
116 | |
117 | mutex_lock(&pchg->xfer_lock); | |
27aefa3b | 118 | ret = i2c_smbus_write_byte_data(pchg->client, reg, data); |
2165c8a4 WK |
119 | mutex_unlock(&pchg->xfer_lock); |
120 | ||
121 | return ret; | |
122 | } | |
123 | ||
2165c8a4 WK |
124 | static int lp8727_is_charger_attached(const char *name, int id) |
125 | { | |
126 | if (name) { | |
127 | if (!strcmp(name, "ac")) | |
6029719f | 128 | return (id == LP8727_ID_TA || id == LP8727_ID_DEDICATED_CHG) ? 1 : 0; |
2165c8a4 | 129 | else if (!strcmp(name, "usb")) |
6029719f | 130 | return (id == LP8727_ID_USB_CHG) ? 1 : 0; |
2165c8a4 WK |
131 | } |
132 | ||
6029719f | 133 | return (id >= LP8727_ID_TA && id <= LP8727_ID_USB_CHG) ? 1 : 0; |
2165c8a4 WK |
134 | } |
135 | ||
7da6334e | 136 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
137 | { |
138 | u8 val; | |
7da6334e | 139 | int ret; |
638555d2 KM |
140 | u8 intstat[LP8788_NUM_INTREGS]; |
141 | ||
142 | /* clear interrupts */ | |
6029719f | 143 | ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS); |
638555d2 KM |
144 | if (ret) |
145 | return ret; | |
146 | ||
2165c8a4 | 147 | |
6029719f KM |
148 | val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN; |
149 | ret = lp8727_write_byte(pchg, LP8727_CTRL1, val); | |
7da6334e KM |
150 | if (ret) |
151 | return ret; | |
2165c8a4 | 152 | |
6029719f KM |
153 | val = LP8727_INT_EN | LP8727_CHGDET_EN; |
154 | ret = lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
7da6334e KM |
155 | if (ret) |
156 | return ret; | |
157 | ||
158 | return 0; | |
2165c8a4 WK |
159 | } |
160 | ||
161 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
162 | { | |
163 | u8 val; | |
6029719f KM |
164 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
165 | return val & LP8727_DCPORT; | |
2165c8a4 WK |
166 | } |
167 | ||
168 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
169 | { | |
170 | u8 val; | |
6029719f KM |
171 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
172 | return val & LP8727_CHPORT; | |
2165c8a4 WK |
173 | } |
174 | ||
175 | static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) | |
176 | { | |
6029719f | 177 | lp8727_write_byte(pchg, LP8727_SWCTRL, sw); |
2165c8a4 WK |
178 | } |
179 | ||
180 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
181 | { | |
318cb389 | 182 | struct lp8727_platform_data *pdata = pchg->pdata; |
6029719f KM |
183 | u8 devid = LP8727_ID_NONE; |
184 | u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ; | |
2165c8a4 WK |
185 | |
186 | switch (id) { | |
187 | case 0x5: | |
6029719f | 188 | devid = LP8727_ID_TA; |
318cb389 | 189 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
190 | break; |
191 | case 0xB: | |
192 | if (lp8727_is_dedicated_charger(pchg)) { | |
318cb389 | 193 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
6029719f | 194 | devid = LP8727_ID_DEDICATED_CHG; |
2165c8a4 | 195 | } else if (lp8727_is_usb_charger(pchg)) { |
318cb389 | 196 | pchg->chg_parm = pdata ? pdata->usb : NULL; |
6029719f KM |
197 | devid = LP8727_ID_USB_CHG; |
198 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 | 199 | } else if (vbusin) { |
6029719f KM |
200 | devid = LP8727_ID_USB_DS; |
201 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 WK |
202 | } |
203 | break; | |
204 | default: | |
6029719f | 205 | devid = LP8727_ID_NONE; |
2165c8a4 WK |
206 | pchg->chg_parm = NULL; |
207 | break; | |
208 | } | |
209 | ||
210 | pchg->devid = devid; | |
211 | lp8727_ctrl_switch(pchg, swctrl); | |
212 | } | |
213 | ||
214 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
215 | { | |
216 | u8 val; | |
217 | ||
6029719f KM |
218 | lp8727_read_byte(pchg, LP8727_CTRL2, &val); |
219 | val |= LP8727_CHGDET_EN; | |
220 | lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
2165c8a4 WK |
221 | } |
222 | ||
223 | static void lp8727_delayed_func(struct work_struct *_work) | |
224 | { | |
225 | u8 intstat[2], idno, vbus; | |
226 | struct lp8727_chg *pchg = | |
227 | container_of(_work, struct lp8727_chg, work.work); | |
228 | ||
6029719f | 229 | if (lp8727_read_bytes(pchg, LP8727_INT1, intstat, 2)) { |
2165c8a4 WK |
230 | dev_err(pchg->dev, "can not read INT registers\n"); |
231 | return; | |
232 | } | |
233 | ||
6029719f KM |
234 | idno = intstat[0] & LP8727_IDNO; |
235 | vbus = intstat[0] & LP8727_VBUS; | |
2165c8a4 WK |
236 | |
237 | lp8727_id_detection(pchg, idno, vbus); | |
238 | lp8727_enable_chgdet(pchg); | |
239 | ||
240 | power_supply_changed(&pchg->psy->ac); | |
241 | power_supply_changed(&pchg->psy->usb); | |
242 | power_supply_changed(&pchg->psy->batt); | |
243 | } | |
244 | ||
245 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
246 | { | |
247 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 248 | |
2a092582 | 249 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
250 | return IRQ_HANDLED; |
251 | } | |
252 | ||
d71fda01 | 253 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 254 | { |
d71fda01 KM |
255 | int ret; |
256 | int irq = pchg->client->irq; | |
60fd57e0 KM |
257 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
258 | DEFAULT_DEBOUNCE_MSEC; | |
259 | ||
2165c8a4 WK |
260 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
261 | ||
d71fda01 KM |
262 | if (irq <= 0) { |
263 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
264 | return 0; | |
265 | } | |
60fd57e0 | 266 | |
d71fda01 | 267 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 268 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
269 | "lp8727_irq", pchg); |
270 | ||
271 | if (ret) | |
272 | return ret; | |
273 | ||
274 | pchg->irq = irq; | |
275 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
280 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
281 | { | |
282 | cancel_delayed_work_sync(&pchg->work); | |
283 | ||
284 | if (pchg->irq) | |
285 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
286 | } |
287 | ||
288 | static enum power_supply_property lp8727_charger_prop[] = { | |
289 | POWER_SUPPLY_PROP_ONLINE, | |
290 | }; | |
291 | ||
292 | static enum power_supply_property lp8727_battery_prop[] = { | |
293 | POWER_SUPPLY_PROP_STATUS, | |
294 | POWER_SUPPLY_PROP_HEALTH, | |
295 | POWER_SUPPLY_PROP_PRESENT, | |
296 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
297 | POWER_SUPPLY_PROP_CAPACITY, | |
298 | POWER_SUPPLY_PROP_TEMP, | |
299 | }; | |
300 | ||
301 | static char *battery_supplied_to[] = { | |
302 | "main_batt", | |
303 | }; | |
304 | ||
305 | static int lp8727_charger_get_property(struct power_supply *psy, | |
306 | enum power_supply_property psp, | |
307 | union power_supply_propval *val) | |
308 | { | |
309 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
310 | ||
ce09affc | 311 | if (psp == POWER_SUPPLY_PROP_ONLINE) |
2165c8a4 WK |
312 | val->intval = lp8727_is_charger_attached(psy->name, |
313 | pchg->devid); | |
2165c8a4 WK |
314 | |
315 | return 0; | |
316 | } | |
317 | ||
b1ad0796 KM |
318 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
319 | { | |
320 | switch (temp) { | |
321 | case LP8788_TEMP_95C: | |
322 | case LP8788_TEMP_115C: | |
323 | case LP8788_TEMP_135C: | |
324 | return true; | |
325 | default: | |
326 | return false; | |
327 | } | |
328 | } | |
329 | ||
2165c8a4 WK |
330 | static int lp8727_battery_get_property(struct power_supply *psy, |
331 | enum power_supply_property psp, | |
332 | union power_supply_propval *val) | |
333 | { | |
334 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 335 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 336 | enum lp8727_die_temp temp; |
2165c8a4 WK |
337 | u8 read; |
338 | ||
339 | switch (psp) { | |
340 | case POWER_SUPPLY_PROP_STATUS: | |
341 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
6029719f | 342 | lp8727_read_byte(pchg, LP8727_STATUS1, &read); |
faaae9bb | 343 | |
6029719f | 344 | val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ? |
faaae9bb KM |
345 | POWER_SUPPLY_STATUS_FULL : |
346 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
347 | } else { |
348 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
349 | } | |
350 | break; | |
351 | case POWER_SUPPLY_PROP_HEALTH: | |
6029719f KM |
352 | lp8727_read_byte(pchg, LP8727_STATUS2, &read); |
353 | temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT; | |
b1ad0796 KM |
354 | |
355 | val->intval = lp8727_is_high_temperature(temp) ? | |
356 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
357 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
358 | break; |
359 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
360 | if (!pdata) |
361 | return -EINVAL; | |
362 | ||
363 | if (pdata->get_batt_present) | |
2165c8a4 WK |
364 | val->intval = pchg->pdata->get_batt_present(); |
365 | break; | |
366 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
367 | if (!pdata) |
368 | return -EINVAL; | |
369 | ||
370 | if (pdata->get_batt_level) | |
2165c8a4 WK |
371 | val->intval = pchg->pdata->get_batt_level(); |
372 | break; | |
373 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
374 | if (!pdata) |
375 | return -EINVAL; | |
376 | ||
377 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
378 | val->intval = pchg->pdata->get_batt_capacity(); |
379 | break; | |
380 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
381 | if (!pdata) |
382 | return -EINVAL; | |
383 | ||
384 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
385 | val->intval = pchg->pdata->get_batt_temp(); |
386 | break; | |
387 | default: | |
388 | break; | |
389 | } | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
394 | static void lp8727_charger_changed(struct power_supply *psy) | |
395 | { | |
396 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
397 | u8 val; | |
398 | u8 eoc_level, ichg; | |
399 | ||
400 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
401 | if (pchg->chg_parm) { | |
402 | eoc_level = pchg->chg_parm->eoc_level; | |
403 | ichg = pchg->chg_parm->ichg; | |
404 | val = (ichg << 4) | eoc_level; | |
6029719f | 405 | lp8727_write_byte(pchg, LP8727_CHGCTRL2, val); |
2165c8a4 WK |
406 | } |
407 | } | |
408 | } | |
409 | ||
410 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
411 | { | |
412 | struct lp8727_psy *psy; | |
413 | ||
74727c57 | 414 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 415 | if (!psy) |
6297b5e5 | 416 | return -ENOMEM; |
2165c8a4 WK |
417 | |
418 | pchg->psy = psy; | |
419 | ||
420 | psy->ac.name = "ac"; | |
421 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
422 | psy->ac.properties = lp8727_charger_prop; | |
423 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
424 | psy->ac.get_property = lp8727_charger_get_property; | |
425 | psy->ac.supplied_to = battery_supplied_to; | |
426 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
427 | ||
428 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 429 | goto err_psy_ac; |
2165c8a4 WK |
430 | |
431 | psy->usb.name = "usb"; | |
432 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
433 | psy->usb.properties = lp8727_charger_prop; | |
434 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
435 | psy->usb.get_property = lp8727_charger_get_property; | |
436 | psy->usb.supplied_to = battery_supplied_to; | |
437 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
438 | ||
439 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 440 | goto err_psy_usb; |
2165c8a4 WK |
441 | |
442 | psy->batt.name = "main_batt"; | |
443 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
444 | psy->batt.properties = lp8727_battery_prop; | |
445 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
446 | psy->batt.get_property = lp8727_battery_get_property; | |
447 | psy->batt.external_power_changed = lp8727_charger_changed; | |
448 | ||
449 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 450 | goto err_psy_batt; |
2165c8a4 WK |
451 | |
452 | return 0; | |
453 | ||
6297b5e5 DN |
454 | err_psy_batt: |
455 | power_supply_unregister(&psy->usb); | |
456 | err_psy_usb: | |
457 | power_supply_unregister(&psy->ac); | |
458 | err_psy_ac: | |
2165c8a4 WK |
459 | return -EPERM; |
460 | } | |
461 | ||
462 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
463 | { | |
464 | struct lp8727_psy *psy = pchg->psy; | |
465 | ||
ce09affc KM |
466 | if (!psy) |
467 | return; | |
468 | ||
469 | power_supply_unregister(&psy->ac); | |
470 | power_supply_unregister(&psy->usb); | |
471 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
472 | } |
473 | ||
474 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
475 | { | |
476 | struct lp8727_chg *pchg; | |
477 | int ret; | |
478 | ||
998a8e7a KM |
479 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
480 | return -EIO; | |
481 | ||
74727c57 | 482 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
483 | if (!pchg) |
484 | return -ENOMEM; | |
485 | ||
486 | pchg->client = cl; | |
487 | pchg->dev = &cl->dev; | |
488 | pchg->pdata = cl->dev.platform_data; | |
489 | i2c_set_clientdata(cl, pchg); | |
490 | ||
491 | mutex_init(&pchg->xfer_lock); | |
492 | ||
7da6334e KM |
493 | ret = lp8727_init_device(pchg); |
494 | if (ret) { | |
495 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 496 | return ret; |
7da6334e KM |
497 | } |
498 | ||
fb9adc51 | 499 | ret = lp8727_register_psy(pchg); |
7da6334e | 500 | if (ret) { |
fb9adc51 KM |
501 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
502 | return ret; | |
7da6334e | 503 | } |
2165c8a4 | 504 | |
d71fda01 | 505 | ret = lp8727_setup_irq(pchg); |
7da6334e | 506 | if (ret) { |
fb9adc51 KM |
507 | dev_err(pchg->dev, "irq handler err: %d", ret); |
508 | lp8727_unregister_psy(pchg); | |
509 | return ret; | |
7da6334e | 510 | } |
2165c8a4 WK |
511 | |
512 | return 0; | |
513 | } | |
514 | ||
515 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
516 | { | |
517 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
518 | ||
d71fda01 | 519 | lp8727_release_irq(pchg); |
fb9adc51 | 520 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
521 | return 0; |
522 | } | |
523 | ||
524 | static const struct i2c_device_id lp8727_ids[] = { | |
525 | {"lp8727", 0}, | |
455a0e2c | 526 | { } |
2165c8a4 | 527 | }; |
e2c5f7db | 528 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
529 | |
530 | static struct i2c_driver lp8727_driver = { | |
531 | .driver = { | |
532 | .name = "lp8727", | |
533 | }, | |
534 | .probe = lp8727_probe, | |
535 | .remove = __devexit_p(lp8727_remove), | |
536 | .id_table = lp8727_ids, | |
537 | }; | |
5ff92e7a | 538 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 539 | |
e39b828f | 540 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
7336880e KM |
541 | MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, " |
542 | "Daniel Jeong <daniel.jeong@ti.com>"); | |
2165c8a4 | 543 | MODULE_LICENSE("GPL"); |