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Commit | Line | Data |
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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 | ||
65272bac | 127 | static bool lp8727_is_charger_attached(const char *name, int id) |
2165c8a4 | 128 | { |
65272bac KM |
129 | if (!strcmp(name, "ac")) |
130 | return id == LP8727_ID_TA || id == LP8727_ID_DEDICATED_CHG; | |
131 | else if (!strcmp(name, "usb")) | |
132 | return id == LP8727_ID_USB_CHG; | |
133 | ||
134 | return id >= LP8727_ID_TA && id <= LP8727_ID_USB_CHG; | |
2165c8a4 WK |
135 | } |
136 | ||
7da6334e | 137 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
138 | { |
139 | u8 val; | |
7da6334e | 140 | int ret; |
638555d2 KM |
141 | u8 intstat[LP8788_NUM_INTREGS]; |
142 | ||
143 | /* clear interrupts */ | |
6029719f | 144 | ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS); |
638555d2 KM |
145 | if (ret) |
146 | return ret; | |
147 | ||
2165c8a4 | 148 | |
6029719f KM |
149 | val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN; |
150 | ret = lp8727_write_byte(pchg, LP8727_CTRL1, val); | |
7da6334e KM |
151 | if (ret) |
152 | return ret; | |
2165c8a4 | 153 | |
6029719f | 154 | val = LP8727_INT_EN | LP8727_CHGDET_EN; |
70be1305 | 155 | return lp8727_write_byte(pchg, LP8727_CTRL2, val); |
2165c8a4 WK |
156 | } |
157 | ||
158 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
159 | { | |
160 | u8 val; | |
6029719f KM |
161 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
162 | return val & LP8727_DCPORT; | |
2165c8a4 WK |
163 | } |
164 | ||
165 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
166 | { | |
167 | u8 val; | |
6029719f KM |
168 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
169 | return val & LP8727_CHPORT; | |
2165c8a4 WK |
170 | } |
171 | ||
91a69633 | 172 | static inline void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) |
2165c8a4 | 173 | { |
6029719f | 174 | lp8727_write_byte(pchg, LP8727_SWCTRL, sw); |
2165c8a4 WK |
175 | } |
176 | ||
177 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
178 | { | |
318cb389 | 179 | struct lp8727_platform_data *pdata = pchg->pdata; |
6029719f KM |
180 | u8 devid = LP8727_ID_NONE; |
181 | u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ; | |
2165c8a4 WK |
182 | |
183 | switch (id) { | |
184 | case 0x5: | |
6029719f | 185 | devid = LP8727_ID_TA; |
318cb389 | 186 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
187 | break; |
188 | case 0xB: | |
189 | if (lp8727_is_dedicated_charger(pchg)) { | |
318cb389 | 190 | pchg->chg_parm = pdata ? pdata->ac : NULL; |
6029719f | 191 | devid = LP8727_ID_DEDICATED_CHG; |
2165c8a4 | 192 | } else if (lp8727_is_usb_charger(pchg)) { |
318cb389 | 193 | pchg->chg_parm = pdata ? pdata->usb : NULL; |
6029719f KM |
194 | devid = LP8727_ID_USB_CHG; |
195 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 | 196 | } else if (vbusin) { |
6029719f KM |
197 | devid = LP8727_ID_USB_DS; |
198 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 WK |
199 | } |
200 | break; | |
201 | default: | |
6029719f | 202 | devid = LP8727_ID_NONE; |
2165c8a4 WK |
203 | pchg->chg_parm = NULL; |
204 | break; | |
205 | } | |
206 | ||
207 | pchg->devid = devid; | |
208 | lp8727_ctrl_switch(pchg, swctrl); | |
209 | } | |
210 | ||
211 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
212 | { | |
213 | u8 val; | |
214 | ||
6029719f KM |
215 | lp8727_read_byte(pchg, LP8727_CTRL2, &val); |
216 | val |= LP8727_CHGDET_EN; | |
217 | lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
2165c8a4 WK |
218 | } |
219 | ||
220 | static void lp8727_delayed_func(struct work_struct *_work) | |
221 | { | |
18763a36 | 222 | u8 intstat[LP8788_NUM_INTREGS], idno, vbus; |
2165c8a4 WK |
223 | struct lp8727_chg *pchg = |
224 | container_of(_work, struct lp8727_chg, work.work); | |
225 | ||
18763a36 | 226 | if (lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS)) { |
2165c8a4 WK |
227 | dev_err(pchg->dev, "can not read INT registers\n"); |
228 | return; | |
229 | } | |
230 | ||
6029719f KM |
231 | idno = intstat[0] & LP8727_IDNO; |
232 | vbus = intstat[0] & LP8727_VBUS; | |
2165c8a4 WK |
233 | |
234 | lp8727_id_detection(pchg, idno, vbus); | |
235 | lp8727_enable_chgdet(pchg); | |
236 | ||
237 | power_supply_changed(&pchg->psy->ac); | |
238 | power_supply_changed(&pchg->psy->usb); | |
239 | power_supply_changed(&pchg->psy->batt); | |
240 | } | |
241 | ||
242 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
243 | { | |
244 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 245 | |
2a092582 | 246 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
247 | return IRQ_HANDLED; |
248 | } | |
249 | ||
d71fda01 | 250 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 251 | { |
d71fda01 KM |
252 | int ret; |
253 | int irq = pchg->client->irq; | |
60fd57e0 KM |
254 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
255 | DEFAULT_DEBOUNCE_MSEC; | |
256 | ||
2165c8a4 WK |
257 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
258 | ||
d71fda01 KM |
259 | if (irq <= 0) { |
260 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
261 | return 0; | |
262 | } | |
60fd57e0 | 263 | |
d71fda01 | 264 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 265 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
266 | "lp8727_irq", pchg); |
267 | ||
268 | if (ret) | |
269 | return ret; | |
270 | ||
271 | pchg->irq = irq; | |
272 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
273 | ||
274 | return 0; | |
275 | } | |
276 | ||
277 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
278 | { | |
279 | cancel_delayed_work_sync(&pchg->work); | |
280 | ||
281 | if (pchg->irq) | |
282 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
283 | } |
284 | ||
285 | static enum power_supply_property lp8727_charger_prop[] = { | |
286 | POWER_SUPPLY_PROP_ONLINE, | |
287 | }; | |
288 | ||
289 | static enum power_supply_property lp8727_battery_prop[] = { | |
290 | POWER_SUPPLY_PROP_STATUS, | |
291 | POWER_SUPPLY_PROP_HEALTH, | |
292 | POWER_SUPPLY_PROP_PRESENT, | |
293 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
294 | POWER_SUPPLY_PROP_CAPACITY, | |
295 | POWER_SUPPLY_PROP_TEMP, | |
296 | }; | |
297 | ||
298 | static char *battery_supplied_to[] = { | |
299 | "main_batt", | |
300 | }; | |
301 | ||
302 | static int lp8727_charger_get_property(struct power_supply *psy, | |
303 | enum power_supply_property psp, | |
304 | union power_supply_propval *val) | |
305 | { | |
306 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
307 | ||
b59c93c0 KM |
308 | if (psp != POWER_SUPPLY_PROP_ONLINE) |
309 | return -EINVAL; | |
310 | ||
311 | val->intval = lp8727_is_charger_attached(psy->name, pchg->devid); | |
2165c8a4 WK |
312 | |
313 | return 0; | |
314 | } | |
315 | ||
b1ad0796 KM |
316 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
317 | { | |
318 | switch (temp) { | |
319 | case LP8788_TEMP_95C: | |
320 | case LP8788_TEMP_115C: | |
321 | case LP8788_TEMP_135C: | |
322 | return true; | |
323 | default: | |
324 | return false; | |
325 | } | |
326 | } | |
327 | ||
2165c8a4 WK |
328 | static int lp8727_battery_get_property(struct power_supply *psy, |
329 | enum power_supply_property psp, | |
330 | union power_supply_propval *val) | |
331 | { | |
332 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 333 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 334 | enum lp8727_die_temp temp; |
2165c8a4 WK |
335 | u8 read; |
336 | ||
337 | switch (psp) { | |
338 | case POWER_SUPPLY_PROP_STATUS: | |
339 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
6029719f | 340 | lp8727_read_byte(pchg, LP8727_STATUS1, &read); |
faaae9bb | 341 | |
6029719f | 342 | val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ? |
faaae9bb KM |
343 | POWER_SUPPLY_STATUS_FULL : |
344 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
345 | } else { |
346 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
347 | } | |
348 | break; | |
349 | case POWER_SUPPLY_PROP_HEALTH: | |
6029719f KM |
350 | lp8727_read_byte(pchg, LP8727_STATUS2, &read); |
351 | temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT; | |
b1ad0796 KM |
352 | |
353 | val->intval = lp8727_is_high_temperature(temp) ? | |
354 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
355 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
356 | break; |
357 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
358 | if (!pdata) |
359 | return -EINVAL; | |
360 | ||
361 | if (pdata->get_batt_present) | |
2165c8a4 WK |
362 | val->intval = pchg->pdata->get_batt_present(); |
363 | break; | |
364 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
365 | if (!pdata) |
366 | return -EINVAL; | |
367 | ||
368 | if (pdata->get_batt_level) | |
2165c8a4 WK |
369 | val->intval = pchg->pdata->get_batt_level(); |
370 | break; | |
371 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
372 | if (!pdata) |
373 | return -EINVAL; | |
374 | ||
375 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
376 | val->intval = pchg->pdata->get_batt_capacity(); |
377 | break; | |
378 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
379 | if (!pdata) |
380 | return -EINVAL; | |
381 | ||
382 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
383 | val->intval = pchg->pdata->get_batt_temp(); |
384 | break; | |
385 | default: | |
386 | break; | |
387 | } | |
388 | ||
389 | return 0; | |
390 | } | |
391 | ||
392 | static void lp8727_charger_changed(struct power_supply *psy) | |
393 | { | |
394 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
395 | u8 val; | |
396 | u8 eoc_level, ichg; | |
397 | ||
398 | if (lp8727_is_charger_attached(psy->name, pchg->devid)) { | |
399 | if (pchg->chg_parm) { | |
400 | eoc_level = pchg->chg_parm->eoc_level; | |
401 | ichg = pchg->chg_parm->ichg; | |
18763a36 | 402 | val = (ichg << LP8727_ICHG_SHIFT) | eoc_level; |
6029719f | 403 | lp8727_write_byte(pchg, LP8727_CHGCTRL2, val); |
2165c8a4 WK |
404 | } |
405 | } | |
406 | } | |
407 | ||
408 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
409 | { | |
410 | struct lp8727_psy *psy; | |
411 | ||
74727c57 | 412 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 413 | if (!psy) |
6297b5e5 | 414 | return -ENOMEM; |
2165c8a4 WK |
415 | |
416 | pchg->psy = psy; | |
417 | ||
418 | psy->ac.name = "ac"; | |
419 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
420 | psy->ac.properties = lp8727_charger_prop; | |
421 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
422 | psy->ac.get_property = lp8727_charger_get_property; | |
423 | psy->ac.supplied_to = battery_supplied_to; | |
424 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
425 | ||
426 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 427 | goto err_psy_ac; |
2165c8a4 WK |
428 | |
429 | psy->usb.name = "usb"; | |
430 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
431 | psy->usb.properties = lp8727_charger_prop; | |
432 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
433 | psy->usb.get_property = lp8727_charger_get_property; | |
434 | psy->usb.supplied_to = battery_supplied_to; | |
435 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
436 | ||
437 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 438 | goto err_psy_usb; |
2165c8a4 WK |
439 | |
440 | psy->batt.name = "main_batt"; | |
441 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
442 | psy->batt.properties = lp8727_battery_prop; | |
443 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
444 | psy->batt.get_property = lp8727_battery_get_property; | |
445 | psy->batt.external_power_changed = lp8727_charger_changed; | |
446 | ||
447 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 448 | goto err_psy_batt; |
2165c8a4 WK |
449 | |
450 | return 0; | |
451 | ||
6297b5e5 DN |
452 | err_psy_batt: |
453 | power_supply_unregister(&psy->usb); | |
454 | err_psy_usb: | |
455 | power_supply_unregister(&psy->ac); | |
456 | err_psy_ac: | |
2165c8a4 WK |
457 | return -EPERM; |
458 | } | |
459 | ||
460 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
461 | { | |
462 | struct lp8727_psy *psy = pchg->psy; | |
463 | ||
ce09affc KM |
464 | if (!psy) |
465 | return; | |
466 | ||
467 | power_supply_unregister(&psy->ac); | |
468 | power_supply_unregister(&psy->usb); | |
469 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
470 | } |
471 | ||
472 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
473 | { | |
474 | struct lp8727_chg *pchg; | |
475 | int ret; | |
476 | ||
998a8e7a KM |
477 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
478 | return -EIO; | |
479 | ||
74727c57 | 480 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
481 | if (!pchg) |
482 | return -ENOMEM; | |
483 | ||
484 | pchg->client = cl; | |
485 | pchg->dev = &cl->dev; | |
486 | pchg->pdata = cl->dev.platform_data; | |
487 | i2c_set_clientdata(cl, pchg); | |
488 | ||
489 | mutex_init(&pchg->xfer_lock); | |
490 | ||
7da6334e KM |
491 | ret = lp8727_init_device(pchg); |
492 | if (ret) { | |
493 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 494 | return ret; |
7da6334e KM |
495 | } |
496 | ||
fb9adc51 | 497 | ret = lp8727_register_psy(pchg); |
7da6334e | 498 | if (ret) { |
fb9adc51 KM |
499 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
500 | return ret; | |
7da6334e | 501 | } |
2165c8a4 | 502 | |
d71fda01 | 503 | ret = lp8727_setup_irq(pchg); |
7da6334e | 504 | if (ret) { |
fb9adc51 KM |
505 | dev_err(pchg->dev, "irq handler err: %d", ret); |
506 | lp8727_unregister_psy(pchg); | |
507 | return ret; | |
7da6334e | 508 | } |
2165c8a4 WK |
509 | |
510 | return 0; | |
511 | } | |
512 | ||
513 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
514 | { | |
515 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
516 | ||
d71fda01 | 517 | lp8727_release_irq(pchg); |
fb9adc51 | 518 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
519 | return 0; |
520 | } | |
521 | ||
522 | static const struct i2c_device_id lp8727_ids[] = { | |
523 | {"lp8727", 0}, | |
455a0e2c | 524 | { } |
2165c8a4 | 525 | }; |
e2c5f7db | 526 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
527 | |
528 | static struct i2c_driver lp8727_driver = { | |
529 | .driver = { | |
530 | .name = "lp8727", | |
531 | }, | |
532 | .probe = lp8727_probe, | |
533 | .remove = __devexit_p(lp8727_remove), | |
534 | .id_table = lp8727_ids, | |
535 | }; | |
5ff92e7a | 536 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 537 | |
e39b828f | 538 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
7336880e KM |
539 | MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, " |
540 | "Daniel Jeong <daniel.jeong@ti.com>"); | |
2165c8a4 | 541 | MODULE_LICENSE("GPL"); |