1b7653853SJakob Hauser // SPDX-License-Identifier: GPL-2.0-only
2b7653853SJakob Hauser /*
3b7653853SJakob Hauser * Battery charger driver for RT5033
4b7653853SJakob Hauser *
5b7653853SJakob Hauser * Copyright (C) 2014 Samsung Electronics, Co., Ltd.
6b7653853SJakob Hauser * Author: Beomho Seo <beomho.seo@samsung.com>
7b7653853SJakob Hauser */
8b7653853SJakob Hauser
9*2ce8284cSRob Herring #include <linux/mod_devicetable.h>
10b7653853SJakob Hauser #include <linux/module.h>
11b7653853SJakob Hauser #include <linux/platform_device.h>
12b7653853SJakob Hauser #include <linux/power_supply.h>
13b7653853SJakob Hauser #include <linux/regmap.h>
14b7653853SJakob Hauser #include <linux/mfd/rt5033-private.h>
15b7653853SJakob Hauser
16b7653853SJakob Hauser struct rt5033_charger_data {
17b7653853SJakob Hauser unsigned int pre_uamp;
18b7653853SJakob Hauser unsigned int pre_uvolt;
19b7653853SJakob Hauser unsigned int const_uvolt;
20b7653853SJakob Hauser unsigned int eoc_uamp;
21b7653853SJakob Hauser unsigned int fast_uamp;
22b7653853SJakob Hauser };
23b7653853SJakob Hauser
24b7653853SJakob Hauser struct rt5033_charger {
25b7653853SJakob Hauser struct device *dev;
26b7653853SJakob Hauser struct regmap *regmap;
27b7653853SJakob Hauser struct power_supply *psy;
28b7653853SJakob Hauser struct rt5033_charger_data *chg;
29b7653853SJakob Hauser };
30b7653853SJakob Hauser
rt5033_get_charger_state(struct rt5033_charger * charger)31b7653853SJakob Hauser static int rt5033_get_charger_state(struct rt5033_charger *charger)
32b7653853SJakob Hauser {
33b7653853SJakob Hauser struct regmap *regmap = charger->regmap;
34b7653853SJakob Hauser unsigned int reg_data;
35b7653853SJakob Hauser int state;
36b7653853SJakob Hauser
37b7653853SJakob Hauser if (!regmap)
38b7653853SJakob Hauser return POWER_SUPPLY_STATUS_UNKNOWN;
39b7653853SJakob Hauser
40b7653853SJakob Hauser regmap_read(regmap, RT5033_REG_CHG_STAT, ®_data);
41b7653853SJakob Hauser
42b7653853SJakob Hauser switch (reg_data & RT5033_CHG_STAT_MASK) {
43b7653853SJakob Hauser case RT5033_CHG_STAT_DISCHARGING:
44b7653853SJakob Hauser state = POWER_SUPPLY_STATUS_DISCHARGING;
45b7653853SJakob Hauser break;
46b7653853SJakob Hauser case RT5033_CHG_STAT_CHARGING:
47b7653853SJakob Hauser state = POWER_SUPPLY_STATUS_CHARGING;
48b7653853SJakob Hauser break;
49b7653853SJakob Hauser case RT5033_CHG_STAT_FULL:
50b7653853SJakob Hauser state = POWER_SUPPLY_STATUS_FULL;
51b7653853SJakob Hauser break;
52b7653853SJakob Hauser case RT5033_CHG_STAT_NOT_CHARGING:
53b7653853SJakob Hauser state = POWER_SUPPLY_STATUS_NOT_CHARGING;
54b7653853SJakob Hauser break;
55b7653853SJakob Hauser default:
56b7653853SJakob Hauser state = POWER_SUPPLY_STATUS_UNKNOWN;
57b7653853SJakob Hauser }
58b7653853SJakob Hauser
59b7653853SJakob Hauser return state;
60b7653853SJakob Hauser }
61b7653853SJakob Hauser
rt5033_get_charger_type(struct rt5033_charger * charger)62b7653853SJakob Hauser static int rt5033_get_charger_type(struct rt5033_charger *charger)
63b7653853SJakob Hauser {
64b7653853SJakob Hauser struct regmap *regmap = charger->regmap;
65b7653853SJakob Hauser unsigned int reg_data;
66b7653853SJakob Hauser int state;
67b7653853SJakob Hauser
68b7653853SJakob Hauser regmap_read(regmap, RT5033_REG_CHG_STAT, ®_data);
69b7653853SJakob Hauser
70b7653853SJakob Hauser switch (reg_data & RT5033_CHG_STAT_TYPE_MASK) {
71b7653853SJakob Hauser case RT5033_CHG_STAT_TYPE_FAST:
72b7653853SJakob Hauser state = POWER_SUPPLY_CHARGE_TYPE_FAST;
73b7653853SJakob Hauser break;
74b7653853SJakob Hauser case RT5033_CHG_STAT_TYPE_PRE:
75b7653853SJakob Hauser state = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
76b7653853SJakob Hauser break;
77b7653853SJakob Hauser default:
78b7653853SJakob Hauser state = POWER_SUPPLY_CHARGE_TYPE_NONE;
79b7653853SJakob Hauser }
80b7653853SJakob Hauser
81b7653853SJakob Hauser return state;
82b7653853SJakob Hauser }
83b7653853SJakob Hauser
rt5033_get_charger_current_limit(struct rt5033_charger * charger)84b7653853SJakob Hauser static int rt5033_get_charger_current_limit(struct rt5033_charger *charger)
85b7653853SJakob Hauser {
86b7653853SJakob Hauser struct regmap *regmap = charger->regmap;
87b7653853SJakob Hauser unsigned int state, reg_data, data;
88b7653853SJakob Hauser
89b7653853SJakob Hauser regmap_read(regmap, RT5033_REG_CHG_CTRL5, ®_data);
90b7653853SJakob Hauser
91b7653853SJakob Hauser state = (reg_data & RT5033_CHGCTRL5_ICHG_MASK)
92b7653853SJakob Hauser >> RT5033_CHGCTRL5_ICHG_SHIFT;
93b7653853SJakob Hauser
94b7653853SJakob Hauser data = RT5033_CHARGER_FAST_CURRENT_MIN +
95b7653853SJakob Hauser RT5033_CHARGER_FAST_CURRENT_STEP_NUM * state;
96b7653853SJakob Hauser
97b7653853SJakob Hauser return data;
98b7653853SJakob Hauser }
99b7653853SJakob Hauser
rt5033_get_charger_const_voltage(struct rt5033_charger * charger)100b7653853SJakob Hauser static int rt5033_get_charger_const_voltage(struct rt5033_charger *charger)
101b7653853SJakob Hauser {
102b7653853SJakob Hauser struct regmap *regmap = charger->regmap;
103b7653853SJakob Hauser unsigned int state, reg_data, data;
104b7653853SJakob Hauser
105b7653853SJakob Hauser regmap_read(regmap, RT5033_REG_CHG_CTRL2, ®_data);
106b7653853SJakob Hauser
107b7653853SJakob Hauser state = (reg_data & RT5033_CHGCTRL2_CV_MASK)
108b7653853SJakob Hauser >> RT5033_CHGCTRL2_CV_SHIFT;
109b7653853SJakob Hauser
110b7653853SJakob Hauser data = RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN +
111b7653853SJakob Hauser RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM * state;
112b7653853SJakob Hauser
113b7653853SJakob Hauser return data;
114b7653853SJakob Hauser }
115b7653853SJakob Hauser
rt5033_init_const_charge(struct rt5033_charger * charger)116b7653853SJakob Hauser static inline int rt5033_init_const_charge(struct rt5033_charger *charger)
117b7653853SJakob Hauser {
118b7653853SJakob Hauser struct rt5033_charger_data *chg = charger->chg;
119b7653853SJakob Hauser int ret;
120b7653853SJakob Hauser unsigned int val;
121b7653853SJakob Hauser u8 reg_data;
122b7653853SJakob Hauser
123b7653853SJakob Hauser /* Set constant voltage mode */
124b7653853SJakob Hauser if (chg->const_uvolt < RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN ||
125b7653853SJakob Hauser chg->const_uvolt > RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX) {
126b7653853SJakob Hauser dev_err(charger->dev,
127b7653853SJakob Hauser "Value 'constant-charge-voltage-max-microvolt' out of range\n");
128b7653853SJakob Hauser return -EINVAL;
129b7653853SJakob Hauser }
130b7653853SJakob Hauser
131b7653853SJakob Hauser if (chg->const_uvolt == RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN)
132b7653853SJakob Hauser reg_data = 0x00;
133b7653853SJakob Hauser else if (chg->const_uvolt == RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MAX)
134b7653853SJakob Hauser reg_data = RT5033_CV_MAX_VOLTAGE;
135b7653853SJakob Hauser else {
136b7653853SJakob Hauser val = chg->const_uvolt;
137b7653853SJakob Hauser val -= RT5033_CHARGER_CONST_VOLTAGE_LIMIT_MIN;
138b7653853SJakob Hauser val /= RT5033_CHARGER_CONST_VOLTAGE_STEP_NUM;
139b7653853SJakob Hauser reg_data = val;
140b7653853SJakob Hauser }
141b7653853SJakob Hauser
142b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL2,
143b7653853SJakob Hauser RT5033_CHGCTRL2_CV_MASK,
144b7653853SJakob Hauser reg_data << RT5033_CHGCTRL2_CV_SHIFT);
145b7653853SJakob Hauser if (ret) {
146b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
147b7653853SJakob Hauser return -EINVAL;
148b7653853SJakob Hauser }
149b7653853SJakob Hauser
150b7653853SJakob Hauser /* Set end of charge current */
151b7653853SJakob Hauser if (chg->eoc_uamp < RT5033_CHARGER_EOC_MIN ||
152b7653853SJakob Hauser chg->eoc_uamp > RT5033_CHARGER_EOC_MAX) {
153b7653853SJakob Hauser dev_err(charger->dev,
154b7653853SJakob Hauser "Value 'charge-term-current-microamp' out of range\n");
155b7653853SJakob Hauser return -EINVAL;
156b7653853SJakob Hauser }
157b7653853SJakob Hauser
158b7653853SJakob Hauser if (chg->eoc_uamp == RT5033_CHARGER_EOC_MIN)
159b7653853SJakob Hauser reg_data = 0x01;
160b7653853SJakob Hauser else if (chg->eoc_uamp == RT5033_CHARGER_EOC_MAX)
161b7653853SJakob Hauser reg_data = 0x07;
162b7653853SJakob Hauser else {
163b7653853SJakob Hauser val = chg->eoc_uamp;
164b7653853SJakob Hauser if (val < RT5033_CHARGER_EOC_REF) {
165b7653853SJakob Hauser val -= RT5033_CHARGER_EOC_MIN;
166b7653853SJakob Hauser val /= RT5033_CHARGER_EOC_STEP_NUM1;
167b7653853SJakob Hauser reg_data = 0x01 + val;
168b7653853SJakob Hauser } else if (val > RT5033_CHARGER_EOC_REF) {
169b7653853SJakob Hauser val -= RT5033_CHARGER_EOC_REF;
170b7653853SJakob Hauser val /= RT5033_CHARGER_EOC_STEP_NUM2;
171b7653853SJakob Hauser reg_data = 0x04 + val;
172b7653853SJakob Hauser } else {
173b7653853SJakob Hauser reg_data = 0x04;
174b7653853SJakob Hauser }
175b7653853SJakob Hauser }
176b7653853SJakob Hauser
177b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL4,
178b7653853SJakob Hauser RT5033_CHGCTRL4_EOC_MASK, reg_data);
179b7653853SJakob Hauser if (ret) {
180b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
181b7653853SJakob Hauser return -EINVAL;
182b7653853SJakob Hauser }
183b7653853SJakob Hauser
184b7653853SJakob Hauser return 0;
185b7653853SJakob Hauser }
186b7653853SJakob Hauser
rt5033_init_fast_charge(struct rt5033_charger * charger)187b7653853SJakob Hauser static inline int rt5033_init_fast_charge(struct rt5033_charger *charger)
188b7653853SJakob Hauser {
189b7653853SJakob Hauser struct rt5033_charger_data *chg = charger->chg;
190b7653853SJakob Hauser int ret;
191b7653853SJakob Hauser unsigned int val;
192b7653853SJakob Hauser u8 reg_data;
193b7653853SJakob Hauser
194b7653853SJakob Hauser /* Set limit input current */
195b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL1,
196b7653853SJakob Hauser RT5033_CHGCTRL1_IAICR_MASK, RT5033_AICR_2000_MODE);
197b7653853SJakob Hauser if (ret) {
198b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
199b7653853SJakob Hauser return -EINVAL;
200b7653853SJakob Hauser }
201b7653853SJakob Hauser
202b7653853SJakob Hauser /* Set fast-charge mode charging current */
203b7653853SJakob Hauser if (chg->fast_uamp < RT5033_CHARGER_FAST_CURRENT_MIN ||
204b7653853SJakob Hauser chg->fast_uamp > RT5033_CHARGER_FAST_CURRENT_MAX) {
205b7653853SJakob Hauser dev_err(charger->dev,
206b7653853SJakob Hauser "Value 'constant-charge-current-max-microamp' out of range\n");
207b7653853SJakob Hauser return -EINVAL;
208b7653853SJakob Hauser }
209b7653853SJakob Hauser
210b7653853SJakob Hauser if (chg->fast_uamp == RT5033_CHARGER_FAST_CURRENT_MIN)
211b7653853SJakob Hauser reg_data = 0x00;
212b7653853SJakob Hauser else if (chg->fast_uamp == RT5033_CHARGER_FAST_CURRENT_MAX)
213b7653853SJakob Hauser reg_data = RT5033_CHG_MAX_CURRENT;
214b7653853SJakob Hauser else {
215b7653853SJakob Hauser val = chg->fast_uamp;
216b7653853SJakob Hauser val -= RT5033_CHARGER_FAST_CURRENT_MIN;
217b7653853SJakob Hauser val /= RT5033_CHARGER_FAST_CURRENT_STEP_NUM;
218b7653853SJakob Hauser reg_data = val;
219b7653853SJakob Hauser }
220b7653853SJakob Hauser
221b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL5,
222b7653853SJakob Hauser RT5033_CHGCTRL5_ICHG_MASK,
223b7653853SJakob Hauser reg_data << RT5033_CHGCTRL5_ICHG_SHIFT);
224b7653853SJakob Hauser if (ret) {
225b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
226b7653853SJakob Hauser return -EINVAL;
227b7653853SJakob Hauser }
228b7653853SJakob Hauser
229b7653853SJakob Hauser return 0;
230b7653853SJakob Hauser }
231b7653853SJakob Hauser
rt5033_init_pre_charge(struct rt5033_charger * charger)232b7653853SJakob Hauser static inline int rt5033_init_pre_charge(struct rt5033_charger *charger)
233b7653853SJakob Hauser {
234b7653853SJakob Hauser struct rt5033_charger_data *chg = charger->chg;
235b7653853SJakob Hauser int ret;
236b7653853SJakob Hauser unsigned int val;
237b7653853SJakob Hauser u8 reg_data;
238b7653853SJakob Hauser
239b7653853SJakob Hauser /* Set pre-charge threshold voltage */
240b7653853SJakob Hauser if (chg->pre_uvolt < RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN ||
241b7653853SJakob Hauser chg->pre_uvolt > RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX) {
242b7653853SJakob Hauser dev_err(charger->dev,
243b7653853SJakob Hauser "Value 'precharge-upper-limit-microvolt' out of range\n");
244b7653853SJakob Hauser return -EINVAL;
245b7653853SJakob Hauser }
246b7653853SJakob Hauser
247b7653853SJakob Hauser if (chg->pre_uvolt == RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN)
248b7653853SJakob Hauser reg_data = 0x00;
249b7653853SJakob Hauser else if (chg->pre_uvolt == RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MAX)
250b7653853SJakob Hauser reg_data = 0x0f;
251b7653853SJakob Hauser else {
252b7653853SJakob Hauser val = chg->pre_uvolt;
253b7653853SJakob Hauser val -= RT5033_CHARGER_PRE_THRESHOLD_LIMIT_MIN;
254b7653853SJakob Hauser val /= RT5033_CHARGER_PRE_THRESHOLD_STEP_NUM;
255b7653853SJakob Hauser reg_data = val;
256b7653853SJakob Hauser }
257b7653853SJakob Hauser
258b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL5,
259b7653853SJakob Hauser RT5033_CHGCTRL5_VPREC_MASK, reg_data);
260b7653853SJakob Hauser if (ret) {
261b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
262b7653853SJakob Hauser return -EINVAL;
263b7653853SJakob Hauser }
264b7653853SJakob Hauser
265b7653853SJakob Hauser /* Set pre-charge mode charging current */
266b7653853SJakob Hauser if (chg->pre_uamp < RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN ||
267b7653853SJakob Hauser chg->pre_uamp > RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX) {
268b7653853SJakob Hauser dev_err(charger->dev,
269b7653853SJakob Hauser "Value 'precharge-current-microamp' out of range\n");
270b7653853SJakob Hauser return -EINVAL;
271b7653853SJakob Hauser }
272b7653853SJakob Hauser
273b7653853SJakob Hauser if (chg->pre_uamp == RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN)
274b7653853SJakob Hauser reg_data = 0x00;
275b7653853SJakob Hauser else if (chg->pre_uamp == RT5033_CHARGER_PRE_CURRENT_LIMIT_MAX)
276b7653853SJakob Hauser reg_data = RT5033_CHG_MAX_PRE_CURRENT;
277b7653853SJakob Hauser else {
278b7653853SJakob Hauser val = chg->pre_uamp;
279b7653853SJakob Hauser val -= RT5033_CHARGER_PRE_CURRENT_LIMIT_MIN;
280b7653853SJakob Hauser val /= RT5033_CHARGER_PRE_CURRENT_STEP_NUM;
281b7653853SJakob Hauser reg_data = val;
282b7653853SJakob Hauser }
283b7653853SJakob Hauser
284b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL4,
285b7653853SJakob Hauser RT5033_CHGCTRL4_IPREC_MASK,
286b7653853SJakob Hauser reg_data << RT5033_CHGCTRL4_IPREC_SHIFT);
287b7653853SJakob Hauser if (ret) {
288b7653853SJakob Hauser dev_err(charger->dev, "Failed regmap update\n");
289b7653853SJakob Hauser return -EINVAL;
290b7653853SJakob Hauser }
291b7653853SJakob Hauser
292b7653853SJakob Hauser return 0;
293b7653853SJakob Hauser }
294b7653853SJakob Hauser
rt5033_charger_reg_init(struct rt5033_charger * charger)295b7653853SJakob Hauser static int rt5033_charger_reg_init(struct rt5033_charger *charger)
296b7653853SJakob Hauser {
297b7653853SJakob Hauser int ret = 0;
298b7653853SJakob Hauser
299b7653853SJakob Hauser /* Enable charging termination */
300b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL1,
301b7653853SJakob Hauser RT5033_CHGCTRL1_TE_EN_MASK, RT5033_TE_ENABLE);
302b7653853SJakob Hauser if (ret) {
303b7653853SJakob Hauser dev_err(charger->dev, "Failed to enable charging termination.\n");
304b7653853SJakob Hauser return -EINVAL;
305b7653853SJakob Hauser }
306b7653853SJakob Hauser
307b7653853SJakob Hauser /*
308b7653853SJakob Hauser * Disable minimum input voltage regulation (MIVR), this improves
309b7653853SJakob Hauser * the charging performance.
310b7653853SJakob Hauser */
311b7653853SJakob Hauser ret = regmap_update_bits(charger->regmap, RT5033_REG_CHG_CTRL4,
312b7653853SJakob Hauser RT5033_CHGCTRL4_MIVR_MASK, RT5033_CHARGER_MIVR_DISABLE);
313b7653853SJakob Hauser if (ret) {
314b7653853SJakob Hauser dev_err(charger->dev, "Failed to disable MIVR.\n");
315b7653853SJakob Hauser return -EINVAL;
316b7653853SJakob Hauser }
317b7653853SJakob Hauser
318b7653853SJakob Hauser ret = rt5033_init_pre_charge(charger);
319b7653853SJakob Hauser if (ret)
320b7653853SJakob Hauser return ret;
321b7653853SJakob Hauser
322b7653853SJakob Hauser ret = rt5033_init_fast_charge(charger);
323b7653853SJakob Hauser if (ret)
324b7653853SJakob Hauser return ret;
325b7653853SJakob Hauser
326b7653853SJakob Hauser ret = rt5033_init_const_charge(charger);
327b7653853SJakob Hauser if (ret)
328b7653853SJakob Hauser return ret;
329b7653853SJakob Hauser
330b7653853SJakob Hauser return 0;
331b7653853SJakob Hauser }
332b7653853SJakob Hauser
333b7653853SJakob Hauser static enum power_supply_property rt5033_charger_props[] = {
334b7653853SJakob Hauser POWER_SUPPLY_PROP_STATUS,
335b7653853SJakob Hauser POWER_SUPPLY_PROP_CHARGE_TYPE,
336b7653853SJakob Hauser POWER_SUPPLY_PROP_CURRENT_MAX,
337b7653853SJakob Hauser POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
338b7653853SJakob Hauser POWER_SUPPLY_PROP_MODEL_NAME,
339b7653853SJakob Hauser POWER_SUPPLY_PROP_MANUFACTURER,
340b7653853SJakob Hauser POWER_SUPPLY_PROP_ONLINE,
341b7653853SJakob Hauser };
342b7653853SJakob Hauser
rt5033_charger_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)343b7653853SJakob Hauser static int rt5033_charger_get_property(struct power_supply *psy,
344b7653853SJakob Hauser enum power_supply_property psp,
345b7653853SJakob Hauser union power_supply_propval *val)
346b7653853SJakob Hauser {
347b7653853SJakob Hauser struct rt5033_charger *charger = power_supply_get_drvdata(psy);
348b7653853SJakob Hauser
349b7653853SJakob Hauser switch (psp) {
350b7653853SJakob Hauser case POWER_SUPPLY_PROP_STATUS:
351b7653853SJakob Hauser val->intval = rt5033_get_charger_state(charger);
352b7653853SJakob Hauser break;
353b7653853SJakob Hauser case POWER_SUPPLY_PROP_CHARGE_TYPE:
354b7653853SJakob Hauser val->intval = rt5033_get_charger_type(charger);
355b7653853SJakob Hauser break;
356b7653853SJakob Hauser case POWER_SUPPLY_PROP_CURRENT_MAX:
357b7653853SJakob Hauser val->intval = rt5033_get_charger_current_limit(charger);
358b7653853SJakob Hauser break;
359b7653853SJakob Hauser case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
360b7653853SJakob Hauser val->intval = rt5033_get_charger_const_voltage(charger);
361b7653853SJakob Hauser break;
362b7653853SJakob Hauser case POWER_SUPPLY_PROP_MODEL_NAME:
363b7653853SJakob Hauser val->strval = RT5033_CHARGER_MODEL;
364b7653853SJakob Hauser break;
365b7653853SJakob Hauser case POWER_SUPPLY_PROP_MANUFACTURER:
366b7653853SJakob Hauser val->strval = RT5033_MANUFACTURER;
367b7653853SJakob Hauser break;
368b7653853SJakob Hauser case POWER_SUPPLY_PROP_ONLINE:
369b7653853SJakob Hauser val->intval = (rt5033_get_charger_state(charger) ==
370b7653853SJakob Hauser POWER_SUPPLY_STATUS_CHARGING);
371b7653853SJakob Hauser break;
372b7653853SJakob Hauser default:
373b7653853SJakob Hauser return -EINVAL;
374b7653853SJakob Hauser }
375b7653853SJakob Hauser
376b7653853SJakob Hauser return 0;
377b7653853SJakob Hauser }
378b7653853SJakob Hauser
rt5033_charger_dt_init(struct rt5033_charger * charger)379b7653853SJakob Hauser static struct rt5033_charger_data *rt5033_charger_dt_init(
380b7653853SJakob Hauser struct rt5033_charger *charger)
381b7653853SJakob Hauser {
382b7653853SJakob Hauser struct rt5033_charger_data *chg;
383b7653853SJakob Hauser struct power_supply_battery_info *info;
384b7653853SJakob Hauser int ret;
385b7653853SJakob Hauser
386b7653853SJakob Hauser chg = devm_kzalloc(charger->dev, sizeof(*chg), GFP_KERNEL);
387b7653853SJakob Hauser if (!chg)
388b7653853SJakob Hauser return ERR_PTR(-ENOMEM);
389b7653853SJakob Hauser
390b7653853SJakob Hauser ret = power_supply_get_battery_info(charger->psy, &info);
391b7653853SJakob Hauser if (ret)
392b7653853SJakob Hauser return ERR_PTR(dev_err_probe(charger->dev, -EINVAL,
393b7653853SJakob Hauser "missing battery info\n"));
394b7653853SJakob Hauser
395b7653853SJakob Hauser /* Assign data. Validity will be checked in the init functions. */
396b7653853SJakob Hauser chg->pre_uamp = info->precharge_current_ua;
397b7653853SJakob Hauser chg->fast_uamp = info->constant_charge_current_max_ua;
398b7653853SJakob Hauser chg->eoc_uamp = info->charge_term_current_ua;
399b7653853SJakob Hauser chg->pre_uvolt = info->precharge_voltage_max_uv;
400b7653853SJakob Hauser chg->const_uvolt = info->constant_charge_voltage_max_uv;
401b7653853SJakob Hauser
402b7653853SJakob Hauser return chg;
403b7653853SJakob Hauser }
404b7653853SJakob Hauser
405b7653853SJakob Hauser static const struct power_supply_desc rt5033_charger_desc = {
406b7653853SJakob Hauser .name = "rt5033-charger",
407b7653853SJakob Hauser .type = POWER_SUPPLY_TYPE_USB,
408b7653853SJakob Hauser .properties = rt5033_charger_props,
409b7653853SJakob Hauser .num_properties = ARRAY_SIZE(rt5033_charger_props),
410b7653853SJakob Hauser .get_property = rt5033_charger_get_property,
411b7653853SJakob Hauser };
412b7653853SJakob Hauser
rt5033_charger_probe(struct platform_device * pdev)413b7653853SJakob Hauser static int rt5033_charger_probe(struct platform_device *pdev)
414b7653853SJakob Hauser {
415b7653853SJakob Hauser struct rt5033_charger *charger;
416b7653853SJakob Hauser struct power_supply_config psy_cfg = {};
417b7653853SJakob Hauser int ret;
418b7653853SJakob Hauser
419b7653853SJakob Hauser charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
420b7653853SJakob Hauser if (!charger)
421b7653853SJakob Hauser return -ENOMEM;
422b7653853SJakob Hauser
423b7653853SJakob Hauser platform_set_drvdata(pdev, charger);
424b7653853SJakob Hauser charger->dev = &pdev->dev;
425b7653853SJakob Hauser charger->regmap = dev_get_regmap(pdev->dev.parent, NULL);
426b7653853SJakob Hauser
427b7653853SJakob Hauser psy_cfg.of_node = pdev->dev.of_node;
428b7653853SJakob Hauser psy_cfg.drv_data = charger;
429b7653853SJakob Hauser
430b7653853SJakob Hauser charger->psy = devm_power_supply_register(&pdev->dev,
431b7653853SJakob Hauser &rt5033_charger_desc,
432b7653853SJakob Hauser &psy_cfg);
433b7653853SJakob Hauser if (IS_ERR(charger->psy))
434b7653853SJakob Hauser return dev_err_probe(&pdev->dev, PTR_ERR(charger->psy),
435b7653853SJakob Hauser "Failed to register power supply\n");
436b7653853SJakob Hauser
437b7653853SJakob Hauser charger->chg = rt5033_charger_dt_init(charger);
438b7653853SJakob Hauser if (IS_ERR_OR_NULL(charger->chg))
439b7653853SJakob Hauser return PTR_ERR(charger->chg);
440b7653853SJakob Hauser
441b7653853SJakob Hauser ret = rt5033_charger_reg_init(charger);
442b7653853SJakob Hauser if (ret)
443b7653853SJakob Hauser return ret;
444b7653853SJakob Hauser
445b7653853SJakob Hauser return 0;
446b7653853SJakob Hauser }
447b7653853SJakob Hauser
448b7653853SJakob Hauser static const struct platform_device_id rt5033_charger_id[] = {
449b7653853SJakob Hauser { "rt5033-charger", },
450b7653853SJakob Hauser { }
451b7653853SJakob Hauser };
452b7653853SJakob Hauser MODULE_DEVICE_TABLE(platform, rt5033_charger_id);
453b7653853SJakob Hauser
454b7653853SJakob Hauser static const struct of_device_id rt5033_charger_of_match[] = {
455b7653853SJakob Hauser { .compatible = "richtek,rt5033-charger", },
456b7653853SJakob Hauser { }
457b7653853SJakob Hauser };
458b7653853SJakob Hauser MODULE_DEVICE_TABLE(of, rt5033_charger_of_match);
459b7653853SJakob Hauser
460b7653853SJakob Hauser static struct platform_driver rt5033_charger_driver = {
461b7653853SJakob Hauser .driver = {
462b7653853SJakob Hauser .name = "rt5033-charger",
463b7653853SJakob Hauser .of_match_table = rt5033_charger_of_match,
464b7653853SJakob Hauser },
465b7653853SJakob Hauser .probe = rt5033_charger_probe,
466b7653853SJakob Hauser .id_table = rt5033_charger_id,
467b7653853SJakob Hauser };
468b7653853SJakob Hauser module_platform_driver(rt5033_charger_driver);
469b7653853SJakob Hauser
470b7653853SJakob Hauser MODULE_DESCRIPTION("Richtek RT5033 charger driver");
471b7653853SJakob Hauser MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
472b7653853SJakob Hauser MODULE_LICENSE("GPL v2");
473