act8945a_charger.c 16 KB

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  1. // SPDX-License-Identifier: GPL-2.0-only
  2. /*
  3. * Power supply driver for the Active-semi ACT8945A PMIC
  4. *
  5. * Copyright (C) 2015 Atmel Corporation
  6. *
  7. * Author: Wenyou Yang <wenyou.yang@atmel.com>
  8. */
  9. #include <linux/interrupt.h>
  10. #include <linux/module.h>
  11. #include <linux/of.h>
  12. #include <linux/of_irq.h>
  13. #include <linux/platform_device.h>
  14. #include <linux/power_supply.h>
  15. #include <linux/regmap.h>
  16. #include <linux/gpio/consumer.h>
  17. static const char *act8945a_charger_model = "ACT8945A";
  18. static const char *act8945a_charger_manufacturer = "Active-semi";
  19. /**
  20. * ACT8945A Charger Register Map
  21. */
  22. /* 0x70: Reserved */
  23. #define ACT8945A_APCH_CFG 0x71
  24. #define ACT8945A_APCH_STATUS 0x78
  25. #define ACT8945A_APCH_CTRL 0x79
  26. #define ACT8945A_APCH_STATE 0x7A
  27. /* ACT8945A_APCH_CFG */
  28. #define APCH_CFG_OVPSET (0x3 << 0)
  29. #define APCH_CFG_OVPSET_6V6 (0x0 << 0)
  30. #define APCH_CFG_OVPSET_7V (0x1 << 0)
  31. #define APCH_CFG_OVPSET_7V5 (0x2 << 0)
  32. #define APCH_CFG_OVPSET_8V (0x3 << 0)
  33. #define APCH_CFG_PRETIMO (0x3 << 2)
  34. #define APCH_CFG_PRETIMO_40_MIN (0x0 << 2)
  35. #define APCH_CFG_PRETIMO_60_MIN (0x1 << 2)
  36. #define APCH_CFG_PRETIMO_80_MIN (0x2 << 2)
  37. #define APCH_CFG_PRETIMO_DISABLED (0x3 << 2)
  38. #define APCH_CFG_TOTTIMO (0x3 << 4)
  39. #define APCH_CFG_TOTTIMO_3_HOUR (0x0 << 4)
  40. #define APCH_CFG_TOTTIMO_4_HOUR (0x1 << 4)
  41. #define APCH_CFG_TOTTIMO_5_HOUR (0x2 << 4)
  42. #define APCH_CFG_TOTTIMO_DISABLED (0x3 << 4)
  43. #define APCH_CFG_SUSCHG (0x1 << 7)
  44. #define APCH_STATUS_CHGDAT BIT(0)
  45. #define APCH_STATUS_INDAT BIT(1)
  46. #define APCH_STATUS_TEMPDAT BIT(2)
  47. #define APCH_STATUS_TIMRDAT BIT(3)
  48. #define APCH_STATUS_CHGSTAT BIT(4)
  49. #define APCH_STATUS_INSTAT BIT(5)
  50. #define APCH_STATUS_TEMPSTAT BIT(6)
  51. #define APCH_STATUS_TIMRSTAT BIT(7)
  52. #define APCH_CTRL_CHGEOCOUT BIT(0)
  53. #define APCH_CTRL_INDIS BIT(1)
  54. #define APCH_CTRL_TEMPOUT BIT(2)
  55. #define APCH_CTRL_TIMRPRE BIT(3)
  56. #define APCH_CTRL_CHGEOCIN BIT(4)
  57. #define APCH_CTRL_INCON BIT(5)
  58. #define APCH_CTRL_TEMPIN BIT(6)
  59. #define APCH_CTRL_TIMRTOT BIT(7)
  60. #define APCH_STATE_ACINSTAT (0x1 << 1)
  61. #define APCH_STATE_CSTATE (0x3 << 4)
  62. #define APCH_STATE_CSTATE_SHIFT 4
  63. #define APCH_STATE_CSTATE_DISABLED 0x00
  64. #define APCH_STATE_CSTATE_EOC 0x01
  65. #define APCH_STATE_CSTATE_FAST 0x02
  66. #define APCH_STATE_CSTATE_PRE 0x03
  67. struct act8945a_charger {
  68. struct power_supply *psy;
  69. struct power_supply_desc desc;
  70. struct regmap *regmap;
  71. struct work_struct work;
  72. bool init_done;
  73. struct gpio_desc *lbo_gpio;
  74. struct gpio_desc *chglev_gpio;
  75. };
  76. static int act8945a_get_charger_state(struct regmap *regmap, int *val)
  77. {
  78. int ret;
  79. unsigned int status, state;
  80. ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
  81. if (ret < 0)
  82. return ret;
  83. ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
  84. if (ret < 0)
  85. return ret;
  86. state &= APCH_STATE_CSTATE;
  87. state >>= APCH_STATE_CSTATE_SHIFT;
  88. switch (state) {
  89. case APCH_STATE_CSTATE_PRE:
  90. case APCH_STATE_CSTATE_FAST:
  91. *val = POWER_SUPPLY_STATUS_CHARGING;
  92. break;
  93. case APCH_STATE_CSTATE_EOC:
  94. if (status & APCH_STATUS_CHGDAT)
  95. *val = POWER_SUPPLY_STATUS_FULL;
  96. else
  97. *val = POWER_SUPPLY_STATUS_CHARGING;
  98. break;
  99. case APCH_STATE_CSTATE_DISABLED:
  100. default:
  101. if (!(status & APCH_STATUS_INDAT))
  102. *val = POWER_SUPPLY_STATUS_DISCHARGING;
  103. else
  104. *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
  105. break;
  106. }
  107. return 0;
  108. }
  109. static int act8945a_get_charge_type(struct regmap *regmap, int *val)
  110. {
  111. int ret;
  112. unsigned int status, state;
  113. ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
  114. if (ret < 0)
  115. return ret;
  116. ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
  117. if (ret < 0)
  118. return ret;
  119. state &= APCH_STATE_CSTATE;
  120. state >>= APCH_STATE_CSTATE_SHIFT;
  121. switch (state) {
  122. case APCH_STATE_CSTATE_PRE:
  123. *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
  124. break;
  125. case APCH_STATE_CSTATE_FAST:
  126. *val = POWER_SUPPLY_CHARGE_TYPE_FAST;
  127. break;
  128. case APCH_STATE_CSTATE_EOC:
  129. *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
  130. break;
  131. case APCH_STATE_CSTATE_DISABLED:
  132. default:
  133. if (!(status & APCH_STATUS_INDAT))
  134. *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
  135. else
  136. *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
  137. break;
  138. }
  139. return 0;
  140. }
  141. static int act8945a_get_battery_health(struct regmap *regmap, int *val)
  142. {
  143. int ret;
  144. unsigned int status, state, config;
  145. ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
  146. if (ret < 0)
  147. return ret;
  148. ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config);
  149. if (ret < 0)
  150. return ret;
  151. ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
  152. if (ret < 0)
  153. return ret;
  154. state &= APCH_STATE_CSTATE;
  155. state >>= APCH_STATE_CSTATE_SHIFT;
  156. switch (state) {
  157. case APCH_STATE_CSTATE_DISABLED:
  158. if (config & APCH_CFG_SUSCHG) {
  159. *val = POWER_SUPPLY_HEALTH_UNKNOWN;
  160. } else if (status & APCH_STATUS_INDAT) {
  161. if (!(status & APCH_STATUS_TEMPDAT))
  162. *val = POWER_SUPPLY_HEALTH_OVERHEAT;
  163. else if (status & APCH_STATUS_TIMRDAT)
  164. *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
  165. else
  166. *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
  167. } else {
  168. *val = POWER_SUPPLY_HEALTH_GOOD;
  169. }
  170. break;
  171. case APCH_STATE_CSTATE_PRE:
  172. case APCH_STATE_CSTATE_FAST:
  173. case APCH_STATE_CSTATE_EOC:
  174. default:
  175. *val = POWER_SUPPLY_HEALTH_GOOD;
  176. break;
  177. }
  178. return 0;
  179. }
  180. static int act8945a_get_capacity_level(struct act8945a_charger *charger,
  181. struct regmap *regmap, int *val)
  182. {
  183. int ret;
  184. unsigned int status, state, config;
  185. int lbo_level = gpiod_get_value(charger->lbo_gpio);
  186. ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
  187. if (ret < 0)
  188. return ret;
  189. ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config);
  190. if (ret < 0)
  191. return ret;
  192. ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
  193. if (ret < 0)
  194. return ret;
  195. state &= APCH_STATE_CSTATE;
  196. state >>= APCH_STATE_CSTATE_SHIFT;
  197. switch (state) {
  198. case APCH_STATE_CSTATE_PRE:
  199. *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
  200. break;
  201. case APCH_STATE_CSTATE_FAST:
  202. if (lbo_level)
  203. *val = POWER_SUPPLY_CAPACITY_LEVEL_HIGH;
  204. else
  205. *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
  206. break;
  207. case APCH_STATE_CSTATE_EOC:
  208. if (status & APCH_STATUS_CHGDAT)
  209. *val = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
  210. else
  211. *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
  212. break;
  213. case APCH_STATE_CSTATE_DISABLED:
  214. default:
  215. if (config & APCH_CFG_SUSCHG) {
  216. *val = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
  217. } else {
  218. *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
  219. if (!(status & APCH_STATUS_INDAT)) {
  220. if (!lbo_level)
  221. *val = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
  222. }
  223. }
  224. break;
  225. }
  226. return 0;
  227. }
  228. #define MAX_CURRENT_USB_HIGH 450000
  229. #define MAX_CURRENT_USB_LOW 90000
  230. #define MAX_CURRENT_USB_PRE 45000
  231. /*
  232. * Riset(K) = 2336 * (1V/Ichg(mA)) - 0.205
  233. * Riset = 2.43K
  234. */
  235. #define MAX_CURRENT_AC_HIGH 886527
  236. #define MAX_CURRENT_AC_LOW 117305
  237. #define MAX_CURRENT_AC_HIGH_PRE 88653
  238. #define MAX_CURRENT_AC_LOW_PRE 11731
  239. static int act8945a_get_current_max(struct act8945a_charger *charger,
  240. struct regmap *regmap, int *val)
  241. {
  242. int ret;
  243. unsigned int status, state;
  244. unsigned int acin_state;
  245. int chgin_level = gpiod_get_value(charger->chglev_gpio);
  246. ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
  247. if (ret < 0)
  248. return ret;
  249. ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
  250. if (ret < 0)
  251. return ret;
  252. acin_state = (state & APCH_STATE_ACINSTAT) >> 1;
  253. state &= APCH_STATE_CSTATE;
  254. state >>= APCH_STATE_CSTATE_SHIFT;
  255. switch (state) {
  256. case APCH_STATE_CSTATE_PRE:
  257. if (acin_state) {
  258. if (chgin_level)
  259. *val = MAX_CURRENT_AC_HIGH_PRE;
  260. else
  261. *val = MAX_CURRENT_AC_LOW_PRE;
  262. } else {
  263. *val = MAX_CURRENT_USB_PRE;
  264. }
  265. break;
  266. case APCH_STATE_CSTATE_FAST:
  267. if (acin_state) {
  268. if (chgin_level)
  269. *val = MAX_CURRENT_AC_HIGH;
  270. else
  271. *val = MAX_CURRENT_AC_LOW;
  272. } else {
  273. if (chgin_level)
  274. *val = MAX_CURRENT_USB_HIGH;
  275. else
  276. *val = MAX_CURRENT_USB_LOW;
  277. }
  278. break;
  279. case APCH_STATE_CSTATE_EOC:
  280. case APCH_STATE_CSTATE_DISABLED:
  281. default:
  282. *val = 0;
  283. break;
  284. }
  285. return 0;
  286. }
  287. static enum power_supply_property act8945a_charger_props[] = {
  288. POWER_SUPPLY_PROP_STATUS,
  289. POWER_SUPPLY_PROP_CHARGE_TYPE,
  290. POWER_SUPPLY_PROP_TECHNOLOGY,
  291. POWER_SUPPLY_PROP_HEALTH,
  292. POWER_SUPPLY_PROP_CAPACITY_LEVEL,
  293. POWER_SUPPLY_PROP_CURRENT_MAX,
  294. POWER_SUPPLY_PROP_MODEL_NAME,
  295. POWER_SUPPLY_PROP_MANUFACTURER
  296. };
  297. static int act8945a_charger_get_property(struct power_supply *psy,
  298. enum power_supply_property prop,
  299. union power_supply_propval *val)
  300. {
  301. struct act8945a_charger *charger = power_supply_get_drvdata(psy);
  302. struct regmap *regmap = charger->regmap;
  303. int ret = 0;
  304. switch (prop) {
  305. case POWER_SUPPLY_PROP_STATUS:
  306. ret = act8945a_get_charger_state(regmap, &val->intval);
  307. break;
  308. case POWER_SUPPLY_PROP_CHARGE_TYPE:
  309. ret = act8945a_get_charge_type(regmap, &val->intval);
  310. break;
  311. case POWER_SUPPLY_PROP_TECHNOLOGY:
  312. val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
  313. break;
  314. case POWER_SUPPLY_PROP_HEALTH:
  315. ret = act8945a_get_battery_health(regmap, &val->intval);
  316. break;
  317. case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
  318. ret = act8945a_get_capacity_level(charger,
  319. regmap, &val->intval);
  320. break;
  321. case POWER_SUPPLY_PROP_CURRENT_MAX:
  322. ret = act8945a_get_current_max(charger,
  323. regmap, &val->intval);
  324. break;
  325. case POWER_SUPPLY_PROP_MODEL_NAME:
  326. val->strval = act8945a_charger_model;
  327. break;
  328. case POWER_SUPPLY_PROP_MANUFACTURER:
  329. val->strval = act8945a_charger_manufacturer;
  330. break;
  331. default:
  332. return -EINVAL;
  333. }
  334. return ret;
  335. }
  336. static int act8945a_enable_interrupt(struct act8945a_charger *charger)
  337. {
  338. struct regmap *regmap = charger->regmap;
  339. unsigned char ctrl;
  340. int ret;
  341. ctrl = APCH_CTRL_CHGEOCOUT | APCH_CTRL_CHGEOCIN |
  342. APCH_CTRL_INDIS | APCH_CTRL_INCON |
  343. APCH_CTRL_TEMPOUT | APCH_CTRL_TEMPIN |
  344. APCH_CTRL_TIMRPRE | APCH_CTRL_TIMRTOT;
  345. ret = regmap_write(regmap, ACT8945A_APCH_CTRL, ctrl);
  346. if (ret)
  347. return ret;
  348. ctrl = APCH_STATUS_CHGSTAT | APCH_STATUS_INSTAT |
  349. APCH_STATUS_TEMPSTAT | APCH_STATUS_TIMRSTAT;
  350. ret = regmap_write(regmap, ACT8945A_APCH_STATUS, ctrl);
  351. if (ret)
  352. return ret;
  353. return 0;
  354. }
  355. static unsigned int act8945a_set_supply_type(struct act8945a_charger *charger,
  356. unsigned int *type)
  357. {
  358. unsigned int status, state;
  359. int ret;
  360. ret = regmap_read(charger->regmap, ACT8945A_APCH_STATUS, &status);
  361. if (ret < 0)
  362. return ret;
  363. ret = regmap_read(charger->regmap, ACT8945A_APCH_STATE, &state);
  364. if (ret < 0)
  365. return ret;
  366. if (status & APCH_STATUS_INDAT) {
  367. if (state & APCH_STATE_ACINSTAT)
  368. *type = POWER_SUPPLY_TYPE_MAINS;
  369. else
  370. *type = POWER_SUPPLY_TYPE_USB;
  371. } else {
  372. *type = POWER_SUPPLY_TYPE_BATTERY;
  373. }
  374. return 0;
  375. }
  376. static void act8945a_work(struct work_struct *work)
  377. {
  378. struct act8945a_charger *charger =
  379. container_of(work, struct act8945a_charger, work);
  380. act8945a_set_supply_type(charger, &charger->desc.type);
  381. power_supply_changed(charger->psy);
  382. }
  383. static irqreturn_t act8945a_status_changed(int irq, void *dev_id)
  384. {
  385. struct act8945a_charger *charger = dev_id;
  386. if (charger->init_done)
  387. schedule_work(&charger->work);
  388. return IRQ_HANDLED;
  389. }
  390. #define DEFAULT_TOTAL_TIME_OUT 3
  391. #define DEFAULT_PRE_TIME_OUT 40
  392. #define DEFAULT_INPUT_OVP_THRESHOLD 6600
  393. static int act8945a_charger_config(struct device *dev,
  394. struct act8945a_charger *charger)
  395. {
  396. struct device_node *np = dev->of_node;
  397. struct regmap *regmap = charger->regmap;
  398. u32 total_time_out;
  399. u32 pre_time_out;
  400. u32 input_voltage_threshold;
  401. int err, ret;
  402. unsigned int tmp;
  403. unsigned int value = 0;
  404. if (!np) {
  405. dev_err(dev, "no charger of node\n");
  406. return -EINVAL;
  407. }
  408. ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp);
  409. if (ret)
  410. return ret;
  411. if (tmp & APCH_CFG_SUSCHG) {
  412. value |= APCH_CFG_SUSCHG;
  413. dev_info(dev, "have been suspended\n");
  414. }
  415. charger->lbo_gpio = devm_gpiod_get_optional(dev, "active-semi,lbo",
  416. GPIOD_IN);
  417. if (IS_ERR(charger->lbo_gpio)) {
  418. err = PTR_ERR(charger->lbo_gpio);
  419. dev_err(dev, "unable to claim gpio \"lbo\": %d\n", err);
  420. return err;
  421. }
  422. ret = devm_request_irq(dev, gpiod_to_irq(charger->lbo_gpio),
  423. act8945a_status_changed,
  424. (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING),
  425. "act8945a_lbo_detect", charger);
  426. if (ret)
  427. dev_info(dev, "failed to request gpio \"lbo\" IRQ\n");
  428. charger->chglev_gpio = devm_gpiod_get_optional(dev,
  429. "active-semi,chglev",
  430. GPIOD_IN);
  431. if (IS_ERR(charger->chglev_gpio)) {
  432. err = PTR_ERR(charger->chglev_gpio);
  433. dev_err(dev, "unable to claim gpio \"chglev\": %d\n", err);
  434. return err;
  435. }
  436. if (of_property_read_u32(np,
  437. "active-semi,input-voltage-threshold-microvolt",
  438. &input_voltage_threshold))
  439. input_voltage_threshold = DEFAULT_INPUT_OVP_THRESHOLD;
  440. if (of_property_read_u32(np,
  441. "active-semi,precondition-timeout",
  442. &pre_time_out))
  443. pre_time_out = DEFAULT_PRE_TIME_OUT;
  444. if (of_property_read_u32(np, "active-semi,total-timeout",
  445. &total_time_out))
  446. total_time_out = DEFAULT_TOTAL_TIME_OUT;
  447. switch (input_voltage_threshold) {
  448. case 8000:
  449. value |= APCH_CFG_OVPSET_8V;
  450. break;
  451. case 7500:
  452. value |= APCH_CFG_OVPSET_7V5;
  453. break;
  454. case 7000:
  455. value |= APCH_CFG_OVPSET_7V;
  456. break;
  457. case 6600:
  458. default:
  459. value |= APCH_CFG_OVPSET_6V6;
  460. break;
  461. }
  462. switch (pre_time_out) {
  463. case 60:
  464. value |= APCH_CFG_PRETIMO_60_MIN;
  465. break;
  466. case 80:
  467. value |= APCH_CFG_PRETIMO_80_MIN;
  468. break;
  469. case 0:
  470. value |= APCH_CFG_PRETIMO_DISABLED;
  471. break;
  472. case 40:
  473. default:
  474. value |= APCH_CFG_PRETIMO_40_MIN;
  475. break;
  476. }
  477. switch (total_time_out) {
  478. case 4:
  479. value |= APCH_CFG_TOTTIMO_4_HOUR;
  480. break;
  481. case 5:
  482. value |= APCH_CFG_TOTTIMO_5_HOUR;
  483. break;
  484. case 0:
  485. value |= APCH_CFG_TOTTIMO_DISABLED;
  486. break;
  487. case 3:
  488. default:
  489. value |= APCH_CFG_TOTTIMO_3_HOUR;
  490. break;
  491. }
  492. return regmap_write(regmap, ACT8945A_APCH_CFG, value);
  493. }
  494. static int act8945a_charger_probe(struct platform_device *pdev)
  495. {
  496. struct act8945a_charger *charger;
  497. struct power_supply_config psy_cfg = {};
  498. int irq, ret;
  499. charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
  500. if (!charger)
  501. return -ENOMEM;
  502. charger->regmap = dev_get_regmap(pdev->dev.parent, NULL);
  503. if (!charger->regmap) {
  504. dev_err(&pdev->dev, "Parent did not provide regmap\n");
  505. return -EINVAL;
  506. }
  507. ret = act8945a_charger_config(&pdev->dev, charger);
  508. if (ret)
  509. return ret;
  510. irq = of_irq_get(pdev->dev.of_node, 0);
  511. if (irq <= 0) {
  512. dev_err(&pdev->dev, "failed to find IRQ number\n");
  513. return irq ?: -ENXIO;
  514. }
  515. ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed,
  516. IRQF_TRIGGER_FALLING, "act8945a_interrupt",
  517. charger);
  518. if (ret) {
  519. dev_err(&pdev->dev, "failed to request nIRQ pin IRQ\n");
  520. return ret;
  521. }
  522. charger->desc.name = "act8945a-charger";
  523. charger->desc.get_property = act8945a_charger_get_property;
  524. charger->desc.properties = act8945a_charger_props;
  525. charger->desc.num_properties = ARRAY_SIZE(act8945a_charger_props);
  526. ret = act8945a_set_supply_type(charger, &charger->desc.type);
  527. if (ret)
  528. return -EINVAL;
  529. psy_cfg.of_node = pdev->dev.of_node;
  530. psy_cfg.drv_data = charger;
  531. charger->psy = devm_power_supply_register(&pdev->dev,
  532. &charger->desc,
  533. &psy_cfg);
  534. if (IS_ERR(charger->psy)) {
  535. dev_err(&pdev->dev, "failed to register power supply\n");
  536. return PTR_ERR(charger->psy);
  537. }
  538. platform_set_drvdata(pdev, charger);
  539. INIT_WORK(&charger->work, act8945a_work);
  540. ret = act8945a_enable_interrupt(charger);
  541. if (ret)
  542. return -EIO;
  543. charger->init_done = true;
  544. return 0;
  545. }
  546. static int act8945a_charger_remove(struct platform_device *pdev)
  547. {
  548. struct act8945a_charger *charger = platform_get_drvdata(pdev);
  549. charger->init_done = false;
  550. cancel_work_sync(&charger->work);
  551. return 0;
  552. }
  553. static struct platform_driver act8945a_charger_driver = {
  554. .driver = {
  555. .name = "act8945a-charger",
  556. },
  557. .probe = act8945a_charger_probe,
  558. .remove = act8945a_charger_remove,
  559. };
  560. module_platform_driver(act8945a_charger_driver);
  561. MODULE_DESCRIPTION("Active-semi ACT8945A ActivePath charger driver");
  562. MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
  563. MODULE_LICENSE("GPL");