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; | |
2165c8a4 | 91 | struct lp8727_psy *psy; |
1ae9df7d KM |
92 | struct lp8727_platform_data *pdata; |
93 | ||
94 | /* Charger Data */ | |
2165c8a4 | 95 | enum lp8727_dev_id devid; |
1ae9df7d KM |
96 | struct lp8727_chg_param *chg_param; |
97 | ||
98 | /* Interrupt Handling */ | |
d71fda01 | 99 | int irq; |
1ae9df7d KM |
100 | struct delayed_work work; |
101 | unsigned long debounce_jiffies; | |
2165c8a4 WK |
102 | }; |
103 | ||
27aefa3b | 104 | static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len) |
2165c8a4 WK |
105 | { |
106 | s32 ret; | |
107 | ||
108 | mutex_lock(&pchg->xfer_lock); | |
109 | ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data); | |
110 | mutex_unlock(&pchg->xfer_lock); | |
111 | ||
112 | return (ret != len) ? -EIO : 0; | |
113 | } | |
114 | ||
27aefa3b | 115 | static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data) |
2165c8a4 | 116 | { |
27aefa3b KM |
117 | return lp8727_read_bytes(pchg, reg, data, 1); |
118 | } | |
119 | ||
120 | static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data) | |
121 | { | |
122 | int ret; | |
2165c8a4 WK |
123 | |
124 | mutex_lock(&pchg->xfer_lock); | |
27aefa3b | 125 | ret = i2c_smbus_write_byte_data(pchg->client, reg, data); |
2165c8a4 WK |
126 | mutex_unlock(&pchg->xfer_lock); |
127 | ||
128 | return ret; | |
129 | } | |
130 | ||
65272bac | 131 | static bool lp8727_is_charger_attached(const char *name, int id) |
2165c8a4 | 132 | { |
65272bac KM |
133 | if (!strcmp(name, "ac")) |
134 | return id == LP8727_ID_TA || id == LP8727_ID_DEDICATED_CHG; | |
135 | else if (!strcmp(name, "usb")) | |
136 | return id == LP8727_ID_USB_CHG; | |
137 | ||
138 | return id >= LP8727_ID_TA && id <= LP8727_ID_USB_CHG; | |
2165c8a4 WK |
139 | } |
140 | ||
7da6334e | 141 | static int lp8727_init_device(struct lp8727_chg *pchg) |
2165c8a4 WK |
142 | { |
143 | u8 val; | |
7da6334e | 144 | int ret; |
638555d2 KM |
145 | u8 intstat[LP8788_NUM_INTREGS]; |
146 | ||
147 | /* clear interrupts */ | |
6029719f | 148 | ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS); |
638555d2 KM |
149 | if (ret) |
150 | return ret; | |
151 | ||
6029719f KM |
152 | val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN; |
153 | ret = lp8727_write_byte(pchg, LP8727_CTRL1, val); | |
7da6334e KM |
154 | if (ret) |
155 | return ret; | |
2165c8a4 | 156 | |
6029719f | 157 | val = LP8727_INT_EN | LP8727_CHGDET_EN; |
70be1305 | 158 | return lp8727_write_byte(pchg, LP8727_CTRL2, val); |
2165c8a4 WK |
159 | } |
160 | ||
161 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
162 | { | |
163 | u8 val; | |
b9633ef1 | 164 | |
6029719f KM |
165 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
166 | return val & LP8727_DCPORT; | |
2165c8a4 WK |
167 | } |
168 | ||
169 | static int lp8727_is_usb_charger(struct lp8727_chg *pchg) | |
170 | { | |
171 | u8 val; | |
b9633ef1 | 172 | |
6029719f KM |
173 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
174 | return val & LP8727_CHPORT; | |
2165c8a4 WK |
175 | } |
176 | ||
91a69633 | 177 | static inline void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) |
2165c8a4 | 178 | { |
6029719f | 179 | lp8727_write_byte(pchg, LP8727_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; |
6029719f KM |
185 | u8 devid = LP8727_ID_NONE; |
186 | u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ; | |
2165c8a4 WK |
187 | |
188 | switch (id) { | |
189 | case 0x5: | |
6029719f | 190 | devid = LP8727_ID_TA; |
56d99ed9 | 191 | pchg->chg_param = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
192 | break; |
193 | case 0xB: | |
194 | if (lp8727_is_dedicated_charger(pchg)) { | |
56d99ed9 | 195 | pchg->chg_param = pdata ? pdata->ac : NULL; |
6029719f | 196 | devid = LP8727_ID_DEDICATED_CHG; |
2165c8a4 | 197 | } else if (lp8727_is_usb_charger(pchg)) { |
56d99ed9 | 198 | pchg->chg_param = pdata ? pdata->usb : NULL; |
6029719f KM |
199 | devid = LP8727_ID_USB_CHG; |
200 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 | 201 | } else if (vbusin) { |
6029719f KM |
202 | devid = LP8727_ID_USB_DS; |
203 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 WK |
204 | } |
205 | break; | |
206 | default: | |
6029719f | 207 | devid = LP8727_ID_NONE; |
56d99ed9 | 208 | pchg->chg_param = NULL; |
2165c8a4 WK |
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 | ||
6029719f KM |
220 | lp8727_read_byte(pchg, LP8727_CTRL2, &val); |
221 | val |= LP8727_CHGDET_EN; | |
222 | lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
2165c8a4 WK |
223 | } |
224 | ||
225 | static void lp8727_delayed_func(struct work_struct *_work) | |
226 | { | |
5e00b976 KM |
227 | struct lp8727_chg *pchg = container_of(_work, struct lp8727_chg, |
228 | work.work); | |
229 | u8 intstat[LP8788_NUM_INTREGS]; | |
230 | u8 idno; | |
231 | u8 vbus; | |
2165c8a4 | 232 | |
18763a36 | 233 | if (lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS)) { |
2165c8a4 WK |
234 | dev_err(pchg->dev, "can not read INT registers\n"); |
235 | return; | |
236 | } | |
237 | ||
6029719f KM |
238 | idno = intstat[0] & LP8727_IDNO; |
239 | vbus = intstat[0] & LP8727_VBUS; | |
2165c8a4 WK |
240 | |
241 | lp8727_id_detection(pchg, idno, vbus); | |
242 | lp8727_enable_chgdet(pchg); | |
243 | ||
244 | power_supply_changed(&pchg->psy->ac); | |
245 | power_supply_changed(&pchg->psy->usb); | |
246 | power_supply_changed(&pchg->psy->batt); | |
247 | } | |
248 | ||
249 | static irqreturn_t lp8727_isr_func(int irq, void *ptr) | |
250 | { | |
251 | struct lp8727_chg *pchg = ptr; | |
2165c8a4 | 252 | |
2a092582 | 253 | schedule_delayed_work(&pchg->work, pchg->debounce_jiffies); |
2165c8a4 WK |
254 | return IRQ_HANDLED; |
255 | } | |
256 | ||
d71fda01 | 257 | static int lp8727_setup_irq(struct lp8727_chg *pchg) |
2165c8a4 | 258 | { |
d71fda01 KM |
259 | int ret; |
260 | int irq = pchg->client->irq; | |
60fd57e0 KM |
261 | unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec : |
262 | DEFAULT_DEBOUNCE_MSEC; | |
263 | ||
2165c8a4 WK |
264 | INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func); |
265 | ||
d71fda01 KM |
266 | if (irq <= 0) { |
267 | dev_warn(pchg->dev, "invalid irq number: %d\n", irq); | |
268 | return 0; | |
269 | } | |
60fd57e0 | 270 | |
d71fda01 | 271 | ret = request_threaded_irq(irq, NULL, lp8727_isr_func, |
7c577c0d | 272 | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |
d71fda01 KM |
273 | "lp8727_irq", pchg); |
274 | ||
275 | if (ret) | |
276 | return ret; | |
277 | ||
278 | pchg->irq = irq; | |
279 | pchg->debounce_jiffies = msecs_to_jiffies(delay_msec); | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | static void lp8727_release_irq(struct lp8727_chg *pchg) | |
285 | { | |
286 | cancel_delayed_work_sync(&pchg->work); | |
287 | ||
288 | if (pchg->irq) | |
289 | free_irq(pchg->irq, pchg); | |
2165c8a4 WK |
290 | } |
291 | ||
292 | static enum power_supply_property lp8727_charger_prop[] = { | |
293 | POWER_SUPPLY_PROP_ONLINE, | |
294 | }; | |
295 | ||
296 | static enum power_supply_property lp8727_battery_prop[] = { | |
297 | POWER_SUPPLY_PROP_STATUS, | |
298 | POWER_SUPPLY_PROP_HEALTH, | |
299 | POWER_SUPPLY_PROP_PRESENT, | |
300 | POWER_SUPPLY_PROP_VOLTAGE_NOW, | |
301 | POWER_SUPPLY_PROP_CAPACITY, | |
302 | POWER_SUPPLY_PROP_TEMP, | |
303 | }; | |
304 | ||
305 | static char *battery_supplied_to[] = { | |
306 | "main_batt", | |
307 | }; | |
308 | ||
309 | static int lp8727_charger_get_property(struct power_supply *psy, | |
310 | enum power_supply_property psp, | |
311 | union power_supply_propval *val) | |
312 | { | |
313 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
314 | ||
b59c93c0 KM |
315 | if (psp != POWER_SUPPLY_PROP_ONLINE) |
316 | return -EINVAL; | |
317 | ||
318 | val->intval = lp8727_is_charger_attached(psy->name, pchg->devid); | |
2165c8a4 WK |
319 | |
320 | return 0; | |
321 | } | |
322 | ||
b1ad0796 KM |
323 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
324 | { | |
325 | switch (temp) { | |
326 | case LP8788_TEMP_95C: | |
327 | case LP8788_TEMP_115C: | |
328 | case LP8788_TEMP_135C: | |
329 | return true; | |
330 | default: | |
331 | return false; | |
332 | } | |
333 | } | |
334 | ||
2165c8a4 WK |
335 | static int lp8727_battery_get_property(struct power_supply *psy, |
336 | enum power_supply_property psp, | |
337 | union power_supply_propval *val) | |
338 | { | |
339 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 340 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 341 | enum lp8727_die_temp temp; |
2165c8a4 WK |
342 | u8 read; |
343 | ||
344 | switch (psp) { | |
345 | case POWER_SUPPLY_PROP_STATUS: | |
e06374b0 KM |
346 | if (!lp8727_is_charger_attached(psy->name, pchg->devid)) { |
347 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
348 | return 0; | |
349 | } | |
350 | ||
351 | lp8727_read_byte(pchg, LP8727_STATUS1, &read); | |
faaae9bb | 352 | |
e06374b0 | 353 | val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ? |
faaae9bb KM |
354 | POWER_SUPPLY_STATUS_FULL : |
355 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
356 | break; |
357 | case POWER_SUPPLY_PROP_HEALTH: | |
6029719f KM |
358 | lp8727_read_byte(pchg, LP8727_STATUS2, &read); |
359 | temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT; | |
b1ad0796 KM |
360 | |
361 | val->intval = lp8727_is_high_temperature(temp) ? | |
362 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
363 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
364 | break; |
365 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
366 | if (!pdata) |
367 | return -EINVAL; | |
368 | ||
369 | if (pdata->get_batt_present) | |
2165c8a4 WK |
370 | val->intval = pchg->pdata->get_batt_present(); |
371 | break; | |
372 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
373 | if (!pdata) |
374 | return -EINVAL; | |
375 | ||
376 | if (pdata->get_batt_level) | |
2165c8a4 WK |
377 | val->intval = pchg->pdata->get_batt_level(); |
378 | break; | |
379 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
380 | if (!pdata) |
381 | return -EINVAL; | |
382 | ||
383 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
384 | val->intval = pchg->pdata->get_batt_capacity(); |
385 | break; | |
386 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
387 | if (!pdata) |
388 | return -EINVAL; | |
389 | ||
390 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
391 | val->intval = pchg->pdata->get_batt_temp(); |
392 | break; | |
393 | default: | |
394 | break; | |
395 | } | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | static void lp8727_charger_changed(struct power_supply *psy) | |
401 | { | |
402 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
20414e2e KM |
403 | u8 eoc_level; |
404 | u8 ichg; | |
2165c8a4 | 405 | u8 val; |
20414e2e KM |
406 | |
407 | /* skip if no charger exists */ | |
408 | if (!lp8727_is_charger_attached(psy->name, pchg->devid)) | |
409 | return; | |
410 | ||
411 | /* update charging parameters */ | |
56d99ed9 KM |
412 | if (pchg->chg_param) { |
413 | eoc_level = pchg->chg_param->eoc_level; | |
414 | ichg = pchg->chg_param->ichg; | |
20414e2e KM |
415 | val = (ichg << LP8727_ICHG_SHIFT) | eoc_level; |
416 | lp8727_write_byte(pchg, LP8727_CHGCTRL2, val); | |
2165c8a4 WK |
417 | } |
418 | } | |
419 | ||
420 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
421 | { | |
422 | struct lp8727_psy *psy; | |
423 | ||
74727c57 | 424 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 425 | if (!psy) |
6297b5e5 | 426 | return -ENOMEM; |
2165c8a4 WK |
427 | |
428 | pchg->psy = psy; | |
429 | ||
430 | psy->ac.name = "ac"; | |
431 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
432 | psy->ac.properties = lp8727_charger_prop; | |
433 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
434 | psy->ac.get_property = lp8727_charger_get_property; | |
435 | psy->ac.supplied_to = battery_supplied_to; | |
436 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
437 | ||
438 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 439 | goto err_psy_ac; |
2165c8a4 WK |
440 | |
441 | psy->usb.name = "usb"; | |
442 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
443 | psy->usb.properties = lp8727_charger_prop; | |
444 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
445 | psy->usb.get_property = lp8727_charger_get_property; | |
446 | psy->usb.supplied_to = battery_supplied_to; | |
447 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
448 | ||
449 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 450 | goto err_psy_usb; |
2165c8a4 WK |
451 | |
452 | psy->batt.name = "main_batt"; | |
453 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
454 | psy->batt.properties = lp8727_battery_prop; | |
455 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
456 | psy->batt.get_property = lp8727_battery_get_property; | |
457 | psy->batt.external_power_changed = lp8727_charger_changed; | |
458 | ||
459 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 460 | goto err_psy_batt; |
2165c8a4 WK |
461 | |
462 | return 0; | |
463 | ||
6297b5e5 DN |
464 | err_psy_batt: |
465 | power_supply_unregister(&psy->usb); | |
466 | err_psy_usb: | |
467 | power_supply_unregister(&psy->ac); | |
468 | err_psy_ac: | |
2165c8a4 WK |
469 | return -EPERM; |
470 | } | |
471 | ||
472 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
473 | { | |
474 | struct lp8727_psy *psy = pchg->psy; | |
475 | ||
ce09affc KM |
476 | if (!psy) |
477 | return; | |
478 | ||
479 | power_supply_unregister(&psy->ac); | |
480 | power_supply_unregister(&psy->usb); | |
481 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
482 | } |
483 | ||
484 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
485 | { | |
486 | struct lp8727_chg *pchg; | |
487 | int ret; | |
488 | ||
998a8e7a KM |
489 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
490 | return -EIO; | |
491 | ||
74727c57 | 492 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
493 | if (!pchg) |
494 | return -ENOMEM; | |
495 | ||
496 | pchg->client = cl; | |
497 | pchg->dev = &cl->dev; | |
498 | pchg->pdata = cl->dev.platform_data; | |
499 | i2c_set_clientdata(cl, pchg); | |
500 | ||
501 | mutex_init(&pchg->xfer_lock); | |
502 | ||
7da6334e KM |
503 | ret = lp8727_init_device(pchg); |
504 | if (ret) { | |
505 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 506 | return ret; |
7da6334e KM |
507 | } |
508 | ||
fb9adc51 | 509 | ret = lp8727_register_psy(pchg); |
7da6334e | 510 | if (ret) { |
fb9adc51 KM |
511 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
512 | return ret; | |
7da6334e | 513 | } |
2165c8a4 | 514 | |
d71fda01 | 515 | ret = lp8727_setup_irq(pchg); |
7da6334e | 516 | if (ret) { |
fb9adc51 KM |
517 | dev_err(pchg->dev, "irq handler err: %d", ret); |
518 | lp8727_unregister_psy(pchg); | |
519 | return ret; | |
7da6334e | 520 | } |
2165c8a4 WK |
521 | |
522 | return 0; | |
523 | } | |
524 | ||
415ec69f | 525 | static int lp8727_remove(struct i2c_client *cl) |
2165c8a4 WK |
526 | { |
527 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
528 | ||
d71fda01 | 529 | lp8727_release_irq(pchg); |
fb9adc51 | 530 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
531 | return 0; |
532 | } | |
533 | ||
534 | static const struct i2c_device_id lp8727_ids[] = { | |
535 | {"lp8727", 0}, | |
455a0e2c | 536 | { } |
2165c8a4 | 537 | }; |
e2c5f7db | 538 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
539 | |
540 | static struct i2c_driver lp8727_driver = { | |
541 | .driver = { | |
542 | .name = "lp8727", | |
543 | }, | |
544 | .probe = lp8727_probe, | |
28ea73f4 | 545 | .remove = lp8727_remove, |
2165c8a4 WK |
546 | .id_table = lp8727_ids, |
547 | }; | |
5ff92e7a | 548 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 549 | |
e39b828f | 550 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
18259cac | 551 | MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>, Daniel Jeong <daniel.jeong@ti.com>"); |
2165c8a4 | 552 | MODULE_LICENSE("GPL"); |