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 | ||
2165c8a4 | 152 | |
6029719f KM |
153 | val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN; |
154 | ret = lp8727_write_byte(pchg, LP8727_CTRL1, val); | |
7da6334e KM |
155 | if (ret) |
156 | return ret; | |
2165c8a4 | 157 | |
6029719f | 158 | val = LP8727_INT_EN | LP8727_CHGDET_EN; |
70be1305 | 159 | return lp8727_write_byte(pchg, LP8727_CTRL2, val); |
2165c8a4 WK |
160 | } |
161 | ||
162 | static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg) | |
163 | { | |
164 | u8 val; | |
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; | |
6029719f KM |
172 | lp8727_read_byte(pchg, LP8727_STATUS1, &val); |
173 | return val & LP8727_CHPORT; | |
2165c8a4 WK |
174 | } |
175 | ||
91a69633 | 176 | static inline void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw) |
2165c8a4 | 177 | { |
6029719f | 178 | lp8727_write_byte(pchg, LP8727_SWCTRL, sw); |
2165c8a4 WK |
179 | } |
180 | ||
181 | static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin) | |
182 | { | |
318cb389 | 183 | struct lp8727_platform_data *pdata = pchg->pdata; |
6029719f KM |
184 | u8 devid = LP8727_ID_NONE; |
185 | u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ; | |
2165c8a4 WK |
186 | |
187 | switch (id) { | |
188 | case 0x5: | |
6029719f | 189 | devid = LP8727_ID_TA; |
56d99ed9 | 190 | pchg->chg_param = pdata ? pdata->ac : NULL; |
2165c8a4 WK |
191 | break; |
192 | case 0xB: | |
193 | if (lp8727_is_dedicated_charger(pchg)) { | |
56d99ed9 | 194 | pchg->chg_param = pdata ? pdata->ac : NULL; |
6029719f | 195 | devid = LP8727_ID_DEDICATED_CHG; |
2165c8a4 | 196 | } else if (lp8727_is_usb_charger(pchg)) { |
56d99ed9 | 197 | pchg->chg_param = pdata ? pdata->usb : NULL; |
6029719f KM |
198 | devid = LP8727_ID_USB_CHG; |
199 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 | 200 | } else if (vbusin) { |
6029719f KM |
201 | devid = LP8727_ID_USB_DS; |
202 | swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP; | |
2165c8a4 WK |
203 | } |
204 | break; | |
205 | default: | |
6029719f | 206 | devid = LP8727_ID_NONE; |
56d99ed9 | 207 | pchg->chg_param = NULL; |
2165c8a4 WK |
208 | break; |
209 | } | |
210 | ||
211 | pchg->devid = devid; | |
212 | lp8727_ctrl_switch(pchg, swctrl); | |
213 | } | |
214 | ||
215 | static void lp8727_enable_chgdet(struct lp8727_chg *pchg) | |
216 | { | |
217 | u8 val; | |
218 | ||
6029719f KM |
219 | lp8727_read_byte(pchg, LP8727_CTRL2, &val); |
220 | val |= LP8727_CHGDET_EN; | |
221 | lp8727_write_byte(pchg, LP8727_CTRL2, val); | |
2165c8a4 WK |
222 | } |
223 | ||
224 | static void lp8727_delayed_func(struct work_struct *_work) | |
225 | { | |
5e00b976 KM |
226 | struct lp8727_chg *pchg = container_of(_work, struct lp8727_chg, |
227 | work.work); | |
228 | u8 intstat[LP8788_NUM_INTREGS]; | |
229 | u8 idno; | |
230 | u8 vbus; | |
2165c8a4 | 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 | ||
b59c93c0 KM |
314 | if (psp != POWER_SUPPLY_PROP_ONLINE) |
315 | return -EINVAL; | |
316 | ||
317 | val->intval = lp8727_is_charger_attached(psy->name, pchg->devid); | |
2165c8a4 WK |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
b1ad0796 KM |
322 | static bool lp8727_is_high_temperature(enum lp8727_die_temp temp) |
323 | { | |
324 | switch (temp) { | |
325 | case LP8788_TEMP_95C: | |
326 | case LP8788_TEMP_115C: | |
327 | case LP8788_TEMP_135C: | |
328 | return true; | |
329 | default: | |
330 | return false; | |
331 | } | |
332 | } | |
333 | ||
2165c8a4 WK |
334 | static int lp8727_battery_get_property(struct power_supply *psy, |
335 | enum power_supply_property psp, | |
336 | union power_supply_propval *val) | |
337 | { | |
338 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
318cb389 | 339 | struct lp8727_platform_data *pdata = pchg->pdata; |
b1ad0796 | 340 | enum lp8727_die_temp temp; |
2165c8a4 WK |
341 | u8 read; |
342 | ||
343 | switch (psp) { | |
344 | case POWER_SUPPLY_PROP_STATUS: | |
e06374b0 KM |
345 | if (!lp8727_is_charger_attached(psy->name, pchg->devid)) { |
346 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; | |
347 | return 0; | |
348 | } | |
349 | ||
350 | lp8727_read_byte(pchg, LP8727_STATUS1, &read); | |
faaae9bb | 351 | |
e06374b0 | 352 | val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ? |
faaae9bb KM |
353 | POWER_SUPPLY_STATUS_FULL : |
354 | POWER_SUPPLY_STATUS_CHARGING; | |
2165c8a4 WK |
355 | break; |
356 | case POWER_SUPPLY_PROP_HEALTH: | |
6029719f KM |
357 | lp8727_read_byte(pchg, LP8727_STATUS2, &read); |
358 | temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT; | |
b1ad0796 KM |
359 | |
360 | val->intval = lp8727_is_high_temperature(temp) ? | |
361 | POWER_SUPPLY_HEALTH_OVERHEAT : | |
362 | POWER_SUPPLY_HEALTH_GOOD; | |
2165c8a4 WK |
363 | break; |
364 | case POWER_SUPPLY_PROP_PRESENT: | |
318cb389 KM |
365 | if (!pdata) |
366 | return -EINVAL; | |
367 | ||
368 | if (pdata->get_batt_present) | |
2165c8a4 WK |
369 | val->intval = pchg->pdata->get_batt_present(); |
370 | break; | |
371 | case POWER_SUPPLY_PROP_VOLTAGE_NOW: | |
318cb389 KM |
372 | if (!pdata) |
373 | return -EINVAL; | |
374 | ||
375 | if (pdata->get_batt_level) | |
2165c8a4 WK |
376 | val->intval = pchg->pdata->get_batt_level(); |
377 | break; | |
378 | case POWER_SUPPLY_PROP_CAPACITY: | |
318cb389 KM |
379 | if (!pdata) |
380 | return -EINVAL; | |
381 | ||
382 | if (pdata->get_batt_capacity) | |
2165c8a4 WK |
383 | val->intval = pchg->pdata->get_batt_capacity(); |
384 | break; | |
385 | case POWER_SUPPLY_PROP_TEMP: | |
318cb389 KM |
386 | if (!pdata) |
387 | return -EINVAL; | |
388 | ||
389 | if (pdata->get_batt_temp) | |
2165c8a4 WK |
390 | val->intval = pchg->pdata->get_batt_temp(); |
391 | break; | |
392 | default: | |
393 | break; | |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | static void lp8727_charger_changed(struct power_supply *psy) | |
400 | { | |
401 | struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent); | |
20414e2e KM |
402 | u8 eoc_level; |
403 | u8 ichg; | |
2165c8a4 | 404 | u8 val; |
20414e2e KM |
405 | |
406 | /* skip if no charger exists */ | |
407 | if (!lp8727_is_charger_attached(psy->name, pchg->devid)) | |
408 | return; | |
409 | ||
410 | /* update charging parameters */ | |
56d99ed9 KM |
411 | if (pchg->chg_param) { |
412 | eoc_level = pchg->chg_param->eoc_level; | |
413 | ichg = pchg->chg_param->ichg; | |
20414e2e KM |
414 | val = (ichg << LP8727_ICHG_SHIFT) | eoc_level; |
415 | lp8727_write_byte(pchg, LP8727_CHGCTRL2, val); | |
2165c8a4 WK |
416 | } |
417 | } | |
418 | ||
419 | static int lp8727_register_psy(struct lp8727_chg *pchg) | |
420 | { | |
421 | struct lp8727_psy *psy; | |
422 | ||
74727c57 | 423 | psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL); |
2165c8a4 | 424 | if (!psy) |
6297b5e5 | 425 | return -ENOMEM; |
2165c8a4 WK |
426 | |
427 | pchg->psy = psy; | |
428 | ||
429 | psy->ac.name = "ac"; | |
430 | psy->ac.type = POWER_SUPPLY_TYPE_MAINS; | |
431 | psy->ac.properties = lp8727_charger_prop; | |
432 | psy->ac.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
433 | psy->ac.get_property = lp8727_charger_get_property; | |
434 | psy->ac.supplied_to = battery_supplied_to; | |
435 | psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
436 | ||
437 | if (power_supply_register(pchg->dev, &psy->ac)) | |
6297b5e5 | 438 | goto err_psy_ac; |
2165c8a4 WK |
439 | |
440 | psy->usb.name = "usb"; | |
441 | psy->usb.type = POWER_SUPPLY_TYPE_USB; | |
442 | psy->usb.properties = lp8727_charger_prop; | |
443 | psy->usb.num_properties = ARRAY_SIZE(lp8727_charger_prop); | |
444 | psy->usb.get_property = lp8727_charger_get_property; | |
445 | psy->usb.supplied_to = battery_supplied_to; | |
446 | psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to); | |
447 | ||
448 | if (power_supply_register(pchg->dev, &psy->usb)) | |
6297b5e5 | 449 | goto err_psy_usb; |
2165c8a4 WK |
450 | |
451 | psy->batt.name = "main_batt"; | |
452 | psy->batt.type = POWER_SUPPLY_TYPE_BATTERY; | |
453 | psy->batt.properties = lp8727_battery_prop; | |
454 | psy->batt.num_properties = ARRAY_SIZE(lp8727_battery_prop); | |
455 | psy->batt.get_property = lp8727_battery_get_property; | |
456 | psy->batt.external_power_changed = lp8727_charger_changed; | |
457 | ||
458 | if (power_supply_register(pchg->dev, &psy->batt)) | |
6297b5e5 | 459 | goto err_psy_batt; |
2165c8a4 WK |
460 | |
461 | return 0; | |
462 | ||
6297b5e5 DN |
463 | err_psy_batt: |
464 | power_supply_unregister(&psy->usb); | |
465 | err_psy_usb: | |
466 | power_supply_unregister(&psy->ac); | |
467 | err_psy_ac: | |
2165c8a4 WK |
468 | return -EPERM; |
469 | } | |
470 | ||
471 | static void lp8727_unregister_psy(struct lp8727_chg *pchg) | |
472 | { | |
473 | struct lp8727_psy *psy = pchg->psy; | |
474 | ||
ce09affc KM |
475 | if (!psy) |
476 | return; | |
477 | ||
478 | power_supply_unregister(&psy->ac); | |
479 | power_supply_unregister(&psy->usb); | |
480 | power_supply_unregister(&psy->batt); | |
2165c8a4 WK |
481 | } |
482 | ||
483 | static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id) | |
484 | { | |
485 | struct lp8727_chg *pchg; | |
486 | int ret; | |
487 | ||
998a8e7a KM |
488 | if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) |
489 | return -EIO; | |
490 | ||
74727c57 | 491 | pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL); |
2165c8a4 WK |
492 | if (!pchg) |
493 | return -ENOMEM; | |
494 | ||
495 | pchg->client = cl; | |
496 | pchg->dev = &cl->dev; | |
497 | pchg->pdata = cl->dev.platform_data; | |
498 | i2c_set_clientdata(cl, pchg); | |
499 | ||
500 | mutex_init(&pchg->xfer_lock); | |
501 | ||
7da6334e KM |
502 | ret = lp8727_init_device(pchg); |
503 | if (ret) { | |
504 | dev_err(pchg->dev, "i2c communication err: %d", ret); | |
fb9adc51 | 505 | return ret; |
7da6334e KM |
506 | } |
507 | ||
fb9adc51 | 508 | ret = lp8727_register_psy(pchg); |
7da6334e | 509 | if (ret) { |
fb9adc51 KM |
510 | dev_err(pchg->dev, "power supplies register err: %d", ret); |
511 | return ret; | |
7da6334e | 512 | } |
2165c8a4 | 513 | |
d71fda01 | 514 | ret = lp8727_setup_irq(pchg); |
7da6334e | 515 | if (ret) { |
fb9adc51 KM |
516 | dev_err(pchg->dev, "irq handler err: %d", ret); |
517 | lp8727_unregister_psy(pchg); | |
518 | return ret; | |
7da6334e | 519 | } |
2165c8a4 WK |
520 | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static int __devexit lp8727_remove(struct i2c_client *cl) | |
525 | { | |
526 | struct lp8727_chg *pchg = i2c_get_clientdata(cl); | |
527 | ||
d71fda01 | 528 | lp8727_release_irq(pchg); |
fb9adc51 | 529 | lp8727_unregister_psy(pchg); |
2165c8a4 WK |
530 | return 0; |
531 | } | |
532 | ||
533 | static const struct i2c_device_id lp8727_ids[] = { | |
534 | {"lp8727", 0}, | |
455a0e2c | 535 | { } |
2165c8a4 | 536 | }; |
e2c5f7db | 537 | MODULE_DEVICE_TABLE(i2c, lp8727_ids); |
2165c8a4 WK |
538 | |
539 | static struct i2c_driver lp8727_driver = { | |
540 | .driver = { | |
541 | .name = "lp8727", | |
542 | }, | |
543 | .probe = lp8727_probe, | |
544 | .remove = __devexit_p(lp8727_remove), | |
545 | .id_table = lp8727_ids, | |
546 | }; | |
5ff92e7a | 547 | module_i2c_driver(lp8727_driver); |
2165c8a4 | 548 | |
e39b828f | 549 | MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver"); |
18259cac | 550 | MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>, Daniel Jeong <daniel.jeong@ti.com>"); |
2165c8a4 | 551 | MODULE_LICENSE("GPL"); |