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 | 61 | |
18763a36 KM |
62 | /* CHGCTRL2 register */ |
63 | #define LP8727_ICHG_SHIFT 4 | |
64 | ||
2165c8a4 | 65 | enum lp8727_dev_id { |
6029719f KM |
66 | LP8727_ID_NONE, |
67 | LP8727_ID_TA, | |
68 | LP8727_ID_DEDICATED_CHG, | |
69 | LP8727_ID_USB_CHG, | |
70 | LP8727_ID_USB_DS, | |
71 | LP8727_ID_MAX, | |
2165c8a4 WK |
72 | }; |
73 | ||
b1ad0796 KM |
74 | enum lp8727_die_temp { |
75 | LP8788_TEMP_75C, | |
76 | LP8788_TEMP_95C, | |
77 | LP8788_TEMP_115C, | |
78 | LP8788_TEMP_135C, | |
79 | }; | |
80 | ||
2165c8a4 WK |
81 | struct lp8727_psy { |
82 | struct power_supply ac; | |
83 | struct power_supply usb; | |
84 | struct power_supply batt; | |
85 | }; | |
86 | ||
87 | struct lp8727_chg { | |
88 | struct device *dev; | |
89 | struct i2c_client *client; | |
90 | struct mutex xfer_lock; | |
91 | struct delayed_work work; | |
2165c8a4 WK |
92 | struct lp8727_platform_data *pdata; |
93 | struct lp8727_psy *psy; | |
94 | struct lp8727_chg_param *chg_parm; | |
95 | enum lp8727_dev_id devid; | |
60fd57e0 | 96 | unsigned long debounce_jiffies; |
d71fda01 | 97 | int irq; |
2165c8a4 WK |
98 | }; |
99 | ||
27aefa3b | 100 | static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len) |
2165c8a4 WK |
101 | { |
102 | s32 ret; | |
103 | ||
104 | mutex_lock(&pchg->xfer_lock); | |
105 | ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data); | |
106 | mutex_unlock(&pchg->xfer_lock); | |
107 | ||
108 | return (ret != len) ? -EIO : 0; | |
109 | } | |
110 | ||
27aefa3b | 111 | static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data) |
2165c8a4 | 112 | { |
27aefa3b KM |
113 | return lp8727_read_bytes(pchg, reg, data, 1); |
114 | } | |
115 | ||
116 | static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data) | |
117 | { | |
118 | int ret; | |
2165c8a4 WK |
119 | |
120 | mutex_lock(&pchg->xfer_lock); | |
27aefa3b | 121 | ret = i2c_smbus_write_byte_data(pchg->client, reg, data); |
2165c8a4 WK |
122 | mutex_unlock(&pchg->xfer_lock); |
123 | ||
124 | return ret; | |
125 | } | |
126 | ||
2165c8a4 WK |
127 | static int lp8727_is_charger_attached(const char *name, int id) |
128 | { | |
129 | if (name) { | |
130 | if (!strcmp(name, "ac")) | |
6029719f | 131 | return (id == LP8727_ID_TA || id == LP8727_ID_DEDICATED_CHG) ? 1 : 0; |
2165c8a4 | 132 | else if (!strcmp(name, "usb")) |
6029719f | 133 | return (id == LP8727_ID_USB_CHG) ? 1 : 0; |
2165c8a4 WK |
134 | } |
135 | ||
6029719f | 136 | return (id >= LP8727_ID_TA && id <= LP8727_ID_USB_CHG) ? 1 : 0; |
2165c8a4 WK |
137 | } |
138 | ||
7da6334e | 139 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
140 | { |
141 | u8 val; | |
7da6334e | 142 | int ret; |
638555d2 KM |
143 | u8 intstat[LP8788_NUM_INTREGS]; |
144 | ||
145 | /* clear interrupts */ | |
6029719f | 146 | ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS); |
638555d2 KM |
147 | if (ret) |
148 | return ret; | |
149 | ||
2165c8a4 | 150 | |
6029719f KM |
151 | val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN; |
152 | ret = lp8727_write_byte(pchg, LP8727_CTRL1, val); | |
7da6334e KM |
153 | if (ret) |
154 | return ret; | |
2165c8a4 | 155 | |
6029719f KM |
156 | val = LP8727_INT_EN | LP8727_CHGDET_EN; |
157 | ret = lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
7da6334e KM |
158 | if (ret) |
159 | return ret; | |
160 | ||
161 | return 0; | |
2165c8a4 WK |
162 | } |
163 | ||
164 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
165 | { | |
166 | u8 val; | |
6029719f KM |
167 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
168 | return val & LP8727_DCPORT; | |
2165c8a4 WK |
169 | } |
170 | ||
171 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
172 | { | |
173 | u8 val; | |
6029719f KM |
174 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
175 | return val & LP8727_CHPORT; | |
2165c8a4 WK |
176 | } |
177 | ||
178 | static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) | |
179 | { | |
6029719f | 180 | lp8727_write_byte(pchg, LP8727_SWCTRL, sw); |
2165c8a4 WK |
181 | } |
182 | ||
183 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
184 | { | |
318cb389 | 185 | struct lp8727_platform_data *pdata = pchg->pdata; |
6029719f KM |
186 | u8 devid = LP8727_ID_NONE; |
187 | u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ; | |
2165c8a4 WK |
188 | |
189 | switch (id) { | |
190 | case 0x5: | |
6029719f | 191 | devid = LP8727_ID_TA; |
318cb389 | 192 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
193 | break; |
194 | case 0xB: | |
195 | if (lp8727_is_dedicated_charger(pchg)) { | |
318cb389 | 196 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
6029719f | 197 | devid = LP8727_ID_DEDICATED_CHG; |
2165c8a4 | 198 | } else if (lp8727_is_usb_charger(pchg)) { |
318cb389 | 199 | pchg->chg_parm = pdata ? pdata->usb : NULL; |
6029719f KM |
200 | devid = LP8727_ID_USB_CHG; |
201 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 | 202 | } else if (vbusin) { |
6029719f KM |
203 | devid = LP8727_ID_USB_DS; |
204 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 WK |
205 | } |
206 | break; | |
207 | default: | |
6029719f | 208 | devid = LP8727_ID_NONE; |
2165c8a4 WK |
209 | pchg->chg_parm = NULL; |
210 | break; | |
211 | } | |
212 | ||
213 | pchg->devid = devid; | |
214 | lp8727_ctrl_switch(pchg, swctrl); | |
215 | } | |
216 | ||
217 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
218 | { | |
219 | u8 val; | |
220 | ||
6029719f KM |
221 | lp8727_read_byte(pchg, LP8727_CTRL2, &val); |
222 | val |= LP8727_CHGDET_EN; | |
223 | lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
2165c8a4 WK |
224 | } |
225 | ||
226 | static void lp8727_delayed_func(struct work_struct *_work) | |
227 | { | |
18763a36 | 228 | u8 intstat[LP8788_NUM_INTREGS], idno, vbus; |
2165c8a4 WK |
229 | struct lp8727_chg *pchg = |
230 | container_of(_work, struct lp8727_chg, work.work); | |
231 | ||
18763a36 | 232 | if (lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS)) { |
2165c8a4 WK |
233 | dev_err(pchg->dev, "can not read INT registers\n"); |
234 | return; | |
235 | } | |
236 | ||
6029719f KM |
237 | idno = intstat[0] & LP8727_IDNO; |
238 | vbus = intstat[0] & LP8727_VBUS; | |
2165c8a4 WK |
239 | |
240 | lp8727_id_detection(pchg, idno, vbus); | |
241 | lp8727_enable_chgdet(pchg); | |
242 | ||
243 | power_supply_changed(&pchg->psy->ac); | |
244 | power_supply_changed(&pchg->psy->usb); | |
245 | power_supply_changed(&pchg->psy->batt); | |
246 | } | |
247 | ||
248 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
249 | { | |
250 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 251 | |
2a092582 | 252 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
253 | return IRQ_HANDLED; |
254 | } | |
255 | ||
d71fda01 | 256 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 257 | { |
d71fda01 KM |
258 | int ret; |
259 | int irq = pchg->client->irq; | |
60fd57e0 KM |
260 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
261 | DEFAULT_DEBOUNCE_MSEC; | |
262 | ||
2165c8a4 WK |
263 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
264 | ||
d71fda01 KM |
265 | if (irq <= 0) { |
266 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
267 | return 0; | |
268 | } | |
60fd57e0 | 269 | |
d71fda01 | 270 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 271 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
272 | "lp8727_irq", pchg); |
273 | ||
274 | if (ret) | |
275 | return ret; | |
276 | ||
277 | pchg->irq = irq; | |
278 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
283 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
284 | { | |
285 | cancel_delayed_work_sync(&pchg->work); | |
286 | ||
287 | if (pchg->irq) | |
288 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
289 | } |
290 | ||
291 | static enum power_supply_property lp8727_charger_prop[] = { | |
292 | POWER_SUPPLY_PROP_ONLINE, | |
293 | }; | |
294 | ||
295 | static enum power_supply_property lp8727_battery_prop[] = { | |
296 | POWER_SUPPLY_PROP_STATUS, | |
297 | POWER_SUPPLY_PROP_HEALTH, | |
298 | POWER_SUPPLY_PROP_PRESENT, | |
299 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
300 | POWER_SUPPLY_PROP_CAPACITY, | |
301 | POWER_SUPPLY_PROP_TEMP, | |
302 | }; | |
303 | ||
304 | static char *battery_supplied_to[] = { | |
305 | "main_batt", | |
306 | }; | |
307 | ||
308 | static int lp8727_charger_get_property(struct power_supply *psy, | |
309 | enum power_supply_property psp, | |
310 | union power_supply_propval *val) | |
311 | { | |
312 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
313 | ||
ce09affc | 314 | if (psp == POWER_SUPPLY_PROP_ONLINE) |
2165c8a4 WK |
315 | val->intval = lp8727_is_charger_attached(psy->name, |
316 | pchg->devid); | |
2165c8a4 WK |
317 | |
318 | return 0; | |
319 | } | |
320 | ||
b1ad0796 KM |
321 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
322 | { | |
323 | switch (temp) { | |
324 | case LP8788_TEMP_95C: | |
325 | case LP8788_TEMP_115C: | |
326 | case LP8788_TEMP_135C: | |
327 | return true; | |
328 | default: | |
329 | return false; | |
330 | } | |
331 | } | |
332 | ||
2165c8a4 WK |
333 | static int lp8727_battery_get_property(struct power_supply *psy, |
334 | enum power_supply_property psp, | |
335 | union power_supply_propval *val) | |
336 | { | |
337 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 338 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 339 | enum lp8727_die_temp temp; |
2165c8a4 WK |
340 | u8 read; |
341 | ||
342 | switch (psp) { | |
343 | case POWER_SUPPLY_PROP_STATUS: | |
344 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
6029719f | 345 | lp8727_read_byte(pchg, LP8727_STATUS1, &read); |
faaae9bb | 346 | |
6029719f | 347 | val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ? |
faaae9bb KM |
348 | POWER_SUPPLY_STATUS_FULL : |
349 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
350 | } else { |
351 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
352 | } | |
353 | break; | |
354 | case POWER_SUPPLY_PROP_HEALTH: | |
6029719f KM |
355 | lp8727_read_byte(pchg, LP8727_STATUS2, &read); |
356 | temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT; | |
b1ad0796 KM |
357 | |
358 | val->intval = lp8727_is_high_temperature(temp) ? | |
359 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
360 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
361 | break; |
362 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
363 | if (!pdata) |
364 | return -EINVAL; | |
365 | ||
366 | if (pdata->get_batt_present) | |
2165c8a4 WK |
367 | val->intval = pchg->pdata->get_batt_present(); |
368 | break; | |
369 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
370 | if (!pdata) |
371 | return -EINVAL; | |
372 | ||
373 | if (pdata->get_batt_level) | |
2165c8a4 WK |
374 | val->intval = pchg->pdata->get_batt_level(); |
375 | break; | |
376 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
377 | if (!pdata) |
378 | return -EINVAL; | |
379 | ||
380 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
381 | val->intval = pchg->pdata->get_batt_capacity(); |
382 | break; | |
383 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
384 | if (!pdata) |
385 | return -EINVAL; | |
386 | ||
387 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
388 | val->intval = pchg->pdata->get_batt_temp(); |
389 | break; | |
390 | default: | |
391 | break; | |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | static void lp8727_charger_changed(struct power_supply *psy) | |
398 | { | |
399 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
400 | u8 val; | |
401 | u8 eoc_level, ichg; | |
402 | ||
403 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
404 | if (pchg->chg_parm) { | |
405 | eoc_level = pchg->chg_parm->eoc_level; | |
406 | ichg = pchg->chg_parm->ichg; | |
18763a36 | 407 | val = (ichg << LP8727_ICHG_SHIFT) | eoc_level; |
6029719f | 408 | lp8727_write_byte(pchg, LP8727_CHGCTRL2, val); |
2165c8a4 WK |
409 | } |
410 | } | |
411 | } | |
412 | ||
413 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
414 | { | |
415 | struct lp8727_psy *psy; | |
416 | ||
74727c57 | 417 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 418 | if (!psy) |
6297b5e5 | 419 | return -ENOMEM; |
2165c8a4 WK |
420 | |
421 | pchg->psy = psy; | |
422 | ||
423 | psy->ac.name = "ac"; | |
424 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
425 | psy->ac.properties = lp8727_charger_prop; | |
426 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
427 | psy->ac.get_property = lp8727_charger_get_property; | |
428 | psy->ac.supplied_to = battery_supplied_to; | |
429 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
430 | ||
431 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 432 | goto err_psy_ac; |
2165c8a4 WK |
433 | |
434 | psy->usb.name = "usb"; | |
435 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
436 | psy->usb.properties = lp8727_charger_prop; | |
437 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
438 | psy->usb.get_property = lp8727_charger_get_property; | |
439 | psy->usb.supplied_to = battery_supplied_to; | |
440 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
441 | ||
442 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 443 | goto err_psy_usb; |
2165c8a4 WK |
444 | |
445 | psy->batt.name = "main_batt"; | |
446 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
447 | psy->batt.properties = lp8727_battery_prop; | |
448 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
449 | psy->batt.get_property = lp8727_battery_get_property; | |
450 | psy->batt.external_power_changed = lp8727_charger_changed; | |
451 | ||
452 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 453 | goto err_psy_batt; |
2165c8a4 WK |
454 | |
455 | return 0; | |
456 | ||
6297b5e5 DN |
457 | err_psy_batt: |
458 | power_supply_unregister(&psy->usb); | |
459 | err_psy_usb: | |
460 | power_supply_unregister(&psy->ac); | |
461 | err_psy_ac: | |
2165c8a4 WK |
462 | return -EPERM; |
463 | } | |
464 | ||
465 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
466 | { | |
467 | struct lp8727_psy *psy = pchg->psy; | |
468 | ||
ce09affc KM |
469 | if (!psy) |
470 | return; | |
471 | ||
472 | power_supply_unregister(&psy->ac); | |
473 | power_supply_unregister(&psy->usb); | |
474 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
475 | } |
476 | ||
477 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
478 | { | |
479 | struct lp8727_chg *pchg; | |
480 | int ret; | |
481 | ||
998a8e7a KM |
482 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
483 | return -EIO; | |
484 | ||
74727c57 | 485 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
486 | if (!pchg) |
487 | return -ENOMEM; | |
488 | ||
489 | pchg->client = cl; | |
490 | pchg->dev = &cl->dev; | |
491 | pchg->pdata = cl->dev.platform_data; | |
492 | i2c_set_clientdata(cl, pchg); | |
493 | ||
494 | mutex_init(&pchg->xfer_lock); | |
495 | ||
7da6334e KM |
496 | ret = lp8727_init_device(pchg); |
497 | if (ret) { | |
498 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 499 | return ret; |
7da6334e KM |
500 | } |
501 | ||
fb9adc51 | 502 | ret = lp8727_register_psy(pchg); |
7da6334e | 503 | if (ret) { |
fb9adc51 KM |
504 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
505 | return ret; | |
7da6334e | 506 | } |
2165c8a4 | 507 | |
d71fda01 | 508 | ret = lp8727_setup_irq(pchg); |
7da6334e | 509 | if (ret) { |
fb9adc51 KM |
510 | dev_err(pchg->dev, "irq handler err: %d", ret); |
511 | lp8727_unregister_psy(pchg); | |
512 | return ret; | |
7da6334e | 513 | } |
2165c8a4 WK |
514 | |
515 | return 0; | |
516 | } | |
517 | ||
518 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
519 | { | |
520 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
521 | ||
d71fda01 | 522 | lp8727_release_irq(pchg); |
fb9adc51 | 523 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
524 | return 0; |
525 | } | |
526 | ||
527 | static const struct i2c_device_id lp8727_ids[] = { | |
528 | {"lp8727", 0}, | |
455a0e2c | 529 | { } |
2165c8a4 | 530 | }; |
e2c5f7db | 531 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
532 | |
533 | static struct i2c_driver lp8727_driver = { | |
534 | .driver = { | |
535 | .name = "lp8727", | |
536 | }, | |
537 | .probe = lp8727_probe, | |
538 | .remove = __devexit_p(lp8727_remove), | |
539 | .id_table = lp8727_ids, | |
540 | }; | |
5ff92e7a | 541 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 542 | |
e39b828f | 543 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
7336880e KM |
544 | MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, " |
545 | "Daniel Jeong <daniel.jeong@ti.com>"); | |
2165c8a4 | 546 | MODULE_LICENSE("GPL"); |