1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2022 Richtek Technology Corp.
4 *
5 * Author: ChiYuan Huang <cy_huang@richtek.com>
6 *         ChiaEn Wu <chiaen_wu@richtek.com>
7 */
8
9#include <linux/bits.h>
10#include <linux/bitfield.h>
11#include <linux/completion.h>
12#include <linux/delay.h>
13#include <linux/gpio/consumer.h>
14#include <linux/i2c.h>
15#include <linux/interrupt.h>
16#include <linux/kernel.h>
17#include <linux/kstrtox.h>
18#include <linux/linear_range.h>
19#include <linux/module.h>
20#include <linux/mod_devicetable.h>
21#include <linux/mutex.h>
22#include <linux/of.h>
23#include <linux/power_supply.h>
24#include <linux/regmap.h>
25#include <linux/regulator/driver.h>
26#include <linux/units.h>
27#include <linux/sysfs.h>
28
29#define RT9467_REG_CORE_CTRL0		0x00
30#define RT9467_REG_CHG_CTRL1		0x01
31#define RT9467_REG_CHG_CTRL2		0x02
32#define RT9467_REG_CHG_CTRL3		0x03
33#define RT9467_REG_CHG_CTRL4		0x04
34#define RT9467_REG_CHG_CTRL5		0x05
35#define RT9467_REG_CHG_CTRL6		0x06
36#define RT9467_REG_CHG_CTRL7		0x07
37#define RT9467_REG_CHG_CTRL8		0x08
38#define RT9467_REG_CHG_CTRL9		0x09
39#define RT9467_REG_CHG_CTRL10		0x0A
40#define RT9467_REG_CHG_CTRL12		0x0C
41#define RT9467_REG_CHG_CTRL13		0x0D
42#define RT9467_REG_CHG_CTRL14		0x0E
43#define RT9467_REG_CHG_ADC		0x11
44#define RT9467_REG_CHG_DPDM1		0x12
45#define RT9467_REG_CHG_DPDM2		0x13
46#define RT9467_REG_DEVICE_ID		0x40
47#define RT9467_REG_CHG_STAT		0x42
48#define RT9467_REG_ADC_DATA_H		0x44
49#define RT9467_REG_CHG_STATC		0x50
50#define RT9467_REG_CHG_IRQ1		0x53
51#define RT9467_REG_CHG_STATC_CTRL	0x60
52#define RT9467_REG_CHG_IRQ1_CTRL	0x63
53
54#define RT9467_MASK_PWR_RDY		BIT(7)
55#define RT9467_MASK_MIVR_STAT		BIT(6)
56#define RT9467_MASK_OTG_CSEL		GENMASK(2, 0)
57#define RT9467_MASK_OTG_VSEL		GENMASK(7, 2)
58#define RT9467_MASK_OTG_EN		BIT(0)
59#define RT9467_MASK_ADC_IN_SEL		GENMASK(7, 4)
60#define RT9467_MASK_ADC_START		BIT(0)
61
62#define RT9467_NUM_IRQ_REGS		4
63#define RT9467_ICHG_MIN_uA		100000
64#define RT9467_ICHG_MAX_uA		5000000
65#define RT9467_CV_MAX_uV		4710000
66#define RT9467_OTG_MIN_uV		4425000
67#define RT9467_OTG_MAX_uV		5825000
68#define RT9467_OTG_STEP_uV		25000
69#define RT9467_NUM_VOTG			(RT9467_OTG_MAX_uV - RT9467_OTG_MIN_uV + 1)
70#define RT9467_AICLVTH_GAP_uV		200000
71#define RT9467_ADCCONV_TIME_MS		35
72
73#define RT9466_VID			0x8
74#define RT9467_VID			0x9
75
76/* IRQ number */
77#define RT9467_IRQ_TS_STATC	0
78#define RT9467_IRQ_CHG_FAULT	1
79#define RT9467_IRQ_CHG_STATC	2
80#define RT9467_IRQ_CHG_TMR	3
81#define RT9467_IRQ_CHG_BATABS	4
82#define RT9467_IRQ_CHG_ADPBAD	5
83#define RT9467_IRQ_CHG_RVP	6
84#define RT9467_IRQ_OTP		7
85
86#define RT9467_IRQ_CHG_AICLM	8
87#define RT9467_IRQ_CHG_ICHGM	9
88#define RT9467_IRQ_WDTMR	11
89#define RT9467_IRQ_SSFINISH	12
90#define RT9467_IRQ_CHG_RECHG	13
91#define RT9467_IRQ_CHG_TERM	14
92#define RT9467_IRQ_CHG_IEOC	15
93
94#define RT9467_IRQ_ADC_DONE	16
95#define RT9467_IRQ_PUMPX_DONE	17
96#define RT9467_IRQ_BST_BATUV	21
97#define RT9467_IRQ_BST_MIDOV	22
98#define RT9467_IRQ_BST_OLP	23
99
100#define RT9467_IRQ_ATTACH	24
101#define RT9467_IRQ_DETACH	25
102#define RT9467_IRQ_HVDCP_DET	29
103#define RT9467_IRQ_CHGDET	30
104#define RT9467_IRQ_DCDT		31
105
106enum rt9467_fields {
107	/* RT9467_REG_CORE_CTRL0 */
108	F_RST = 0,
109	/* RT9467_REG_CHG_CTRL1 */
110	F_HZ, F_OTG_PIN_EN, F_OPA_MODE,
111	/* RT9467_REG_CHG_CTRL2 */
112	F_SHIP_MODE, F_TE, F_IINLMTSEL, F_CFO_EN, F_CHG_EN,
113	/* RT9467_REG_CHG_CTRL3 */
114	F_IAICR, F_ILIM_EN,
115	/* RT9467_REG_CHG_CTRL4 */
116	F_VOREG,
117	/* RT9467_REG_CHG_CTRL6 */
118	F_VMIVR,
119	/* RT9467_REG_CHG_CTRL7 */
120	F_ICHG,
121	/* RT9467_REG_CHG_CTRL8 */
122	F_IPREC,
123	/* RT9467_REG_CHG_CTRL9 */
124	F_IEOC,
125	/* RT9467_REG_CHG_CTRL12 */
126	F_WT_FC,
127	/* RT9467_REG_CHG_CTRL13 */
128	F_OCP,
129	/* RT9467_REG_CHG_CTRL14 */
130	F_AICL_MEAS, F_AICL_VTH,
131	/* RT9467_REG_CHG_DPDM1 */
132	F_USBCHGEN,
133	/* RT9467_REG_CHG_DPDM2 */
134	F_USB_STATUS,
135	/* RT9467_REG_DEVICE_ID */
136	F_VENDOR,
137	/* RT9467_REG_CHG_STAT */
138	F_CHG_STAT,
139	/* RT9467_REG_CHG_STATC */
140	F_PWR_RDY, F_CHG_MIVR,
141	F_MAX_FIELDS
142};
143
144static const struct regmap_irq rt9467_irqs[] = {
145	REGMAP_IRQ_REG_LINE(RT9467_IRQ_TS_STATC, 8),
146	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_FAULT, 8),
147	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_STATC, 8),
148	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TMR, 8),
149	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_BATABS, 8),
150	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ADPBAD, 8),
151	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RVP, 8),
152	REGMAP_IRQ_REG_LINE(RT9467_IRQ_OTP, 8),
153	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_AICLM, 8),
154	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_ICHGM, 8),
155	REGMAP_IRQ_REG_LINE(RT9467_IRQ_WDTMR, 8),
156	REGMAP_IRQ_REG_LINE(RT9467_IRQ_SSFINISH, 8),
157	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_RECHG, 8),
158	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_TERM, 8),
159	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHG_IEOC, 8),
160	REGMAP_IRQ_REG_LINE(RT9467_IRQ_ADC_DONE, 8),
161	REGMAP_IRQ_REG_LINE(RT9467_IRQ_PUMPX_DONE, 8),
162	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_BATUV, 8),
163	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_MIDOV, 8),
164	REGMAP_IRQ_REG_LINE(RT9467_IRQ_BST_OLP, 8),
165	REGMAP_IRQ_REG_LINE(RT9467_IRQ_ATTACH, 8),
166	REGMAP_IRQ_REG_LINE(RT9467_IRQ_DETACH, 8),
167	REGMAP_IRQ_REG_LINE(RT9467_IRQ_HVDCP_DET, 8),
168	REGMAP_IRQ_REG_LINE(RT9467_IRQ_CHGDET, 8),
169	REGMAP_IRQ_REG_LINE(RT9467_IRQ_DCDT, 8)
170};
171
172static const struct regmap_irq_chip rt9467_irq_chip = {
173	.name = "rt9467-irqs",
174	.status_base = RT9467_REG_CHG_IRQ1,
175	.mask_base = RT9467_REG_CHG_IRQ1_CTRL,
176	.num_regs = RT9467_NUM_IRQ_REGS,
177	.irqs = rt9467_irqs,
178	.num_irqs = ARRAY_SIZE(rt9467_irqs),
179};
180
181enum rt9467_ranges {
182	RT9467_RANGE_IAICR = 0,
183	RT9467_RANGE_VOREG,
184	RT9467_RANGE_VMIVR,
185	RT9467_RANGE_ICHG,
186	RT9467_RANGE_IPREC,
187	RT9467_RANGE_IEOC,
188	RT9467_RANGE_AICL_VTH,
189	RT9467_RANGES_MAX
190};
191
192static const struct linear_range rt9467_ranges[RT9467_RANGES_MAX] = {
193	LINEAR_RANGE_IDX(RT9467_RANGE_IAICR, 100000, 0x0, 0x3F, 50000),
194	LINEAR_RANGE_IDX(RT9467_RANGE_VOREG, 3900000, 0x0, 0x51, 10000),
195	LINEAR_RANGE_IDX(RT9467_RANGE_VMIVR, 3900000, 0x0, 0x5F, 100000),
196	LINEAR_RANGE_IDX(RT9467_RANGE_ICHG, 900000, 0x08, 0x31, 100000),
197	LINEAR_RANGE_IDX(RT9467_RANGE_IPREC, 100000, 0x0, 0x0F, 50000),
198	LINEAR_RANGE_IDX(RT9467_RANGE_IEOC, 100000, 0x0, 0x0F, 50000),
199	LINEAR_RANGE_IDX(RT9467_RANGE_AICL_VTH, 4100000, 0x0, 0x7, 100000),
200};
201
202static const struct reg_field rt9467_chg_fields[] = {
203	[F_RST]			= REG_FIELD(RT9467_REG_CORE_CTRL0, 7, 7),
204	[F_HZ]			= REG_FIELD(RT9467_REG_CHG_CTRL1, 2, 2),
205	[F_OTG_PIN_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL1, 1, 1),
206	[F_OPA_MODE]		= REG_FIELD(RT9467_REG_CHG_CTRL1, 0, 0),
207	[F_SHIP_MODE]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 7, 7),
208	[F_TE]			= REG_FIELD(RT9467_REG_CHG_CTRL2, 4, 4),
209	[F_IINLMTSEL]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 2, 3),
210	[F_CFO_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 1, 1),
211	[F_CHG_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL2, 0, 0),
212	[F_IAICR]		= REG_FIELD(RT9467_REG_CHG_CTRL3, 2, 7),
213	[F_ILIM_EN]		= REG_FIELD(RT9467_REG_CHG_CTRL3, 0, 0),
214	[F_VOREG]		= REG_FIELD(RT9467_REG_CHG_CTRL4, 1, 7),
215	[F_VMIVR]		= REG_FIELD(RT9467_REG_CHG_CTRL6, 1, 7),
216	[F_ICHG]		= REG_FIELD(RT9467_REG_CHG_CTRL7, 2, 7),
217	[F_IPREC]		= REG_FIELD(RT9467_REG_CHG_CTRL8, 0, 3),
218	[F_IEOC]		= REG_FIELD(RT9467_REG_CHG_CTRL9, 4, 7),
219	[F_WT_FC]		= REG_FIELD(RT9467_REG_CHG_CTRL12, 5, 7),
220	[F_OCP]			= REG_FIELD(RT9467_REG_CHG_CTRL13, 2, 2),
221	[F_AICL_MEAS]		= REG_FIELD(RT9467_REG_CHG_CTRL14, 7, 7),
222	[F_AICL_VTH]		= REG_FIELD(RT9467_REG_CHG_CTRL14, 0, 2),
223	[F_USBCHGEN]		= REG_FIELD(RT9467_REG_CHG_DPDM1, 7, 7),
224	[F_USB_STATUS]		= REG_FIELD(RT9467_REG_CHG_DPDM2, 0, 2),
225	[F_VENDOR]		= REG_FIELD(RT9467_REG_DEVICE_ID, 4, 7),
226	[F_CHG_STAT]		= REG_FIELD(RT9467_REG_CHG_STAT, 6, 7),
227	[F_PWR_RDY]		= REG_FIELD(RT9467_REG_CHG_STATC, 7, 7),
228	[F_CHG_MIVR]		= REG_FIELD(RT9467_REG_CHG_STATC, 6, 6),
229};
230
231enum {
232	RT9467_STAT_READY = 0,
233	RT9467_STAT_PROGRESS,
234	RT9467_STAT_CHARGE_DONE,
235	RT9467_STAT_FAULT
236};
237
238enum rt9467_adc_chan {
239	RT9467_ADC_VBUS_DIV5 = 0,
240	RT9467_ADC_VBUS_DIV2,
241	RT9467_ADC_VSYS,
242	RT9467_ADC_VBAT,
243	RT9467_ADC_TS_BAT,
244	RT9467_ADC_IBUS,
245	RT9467_ADC_IBAT,
246	RT9467_ADC_REGN,
247	RT9467_ADC_TEMP_JC
248};
249
250enum rt9467_chg_type {
251	RT9467_CHG_TYPE_NOVBUS = 0,
252	RT9467_CHG_TYPE_UNDER_GOING,
253	RT9467_CHG_TYPE_SDP,
254	RT9467_CHG_TYPE_SDPNSTD,
255	RT9467_CHG_TYPE_DCP,
256	RT9467_CHG_TYPE_CDP,
257	RT9467_CHG_TYPE_MAX
258};
259
260enum rt9467_iin_limit_sel {
261	RT9467_IINLMTSEL_3_2A = 0,
262	RT9467_IINLMTSEL_CHG_TYP,
263	RT9467_IINLMTSEL_AICR,
264	RT9467_IINLMTSEL_LOWER_LEVEL, /* lower of above three */
265};
266
267struct rt9467_chg_data {
268	struct device *dev;
269	struct regmap *regmap;
270	struct regmap_field *rm_field[F_MAX_FIELDS];
271	struct regmap_irq_chip_data *irq_chip_data;
272	struct power_supply *psy;
273	struct mutex adc_lock;
274	struct mutex attach_lock;
275	struct mutex ichg_ieoc_lock;
276	struct regulator_dev *rdev;
277	struct completion aicl_done;
278	enum power_supply_usb_type psy_usb_type;
279	unsigned int old_stat;
280	unsigned int vid;
281	int ichg_ua;
282	int ieoc_ua;
283};
284
285static int rt9467_otg_of_parse_cb(struct device_node *of,
286				  const struct regulator_desc *desc,
287				  struct regulator_config *cfg)
288{
289	struct rt9467_chg_data *data = cfg->driver_data;
290
291	cfg->ena_gpiod = fwnode_gpiod_get_index(of_fwnode_handle(of),
292						"enable", 0, GPIOD_OUT_LOW |
293						GPIOD_FLAGS_BIT_NONEXCLUSIVE,
294						desc->name);
295	if (IS_ERR(cfg->ena_gpiod)) {
296		cfg->ena_gpiod = NULL;
297		return 0;
298	}
299
300	return regmap_field_write(data->rm_field[F_OTG_PIN_EN], 1);
301}
302
303static const struct regulator_ops rt9467_otg_regulator_ops = {
304	.enable = regulator_enable_regmap,
305	.disable = regulator_disable_regmap,
306	.is_enabled = regulator_is_enabled_regmap,
307	.list_voltage = regulator_list_voltage_linear,
308	.set_voltage_sel = regulator_set_voltage_sel_regmap,
309	.get_voltage_sel = regulator_get_voltage_sel_regmap,
310	.set_current_limit = regulator_set_current_limit_regmap,
311	.get_current_limit = regulator_get_current_limit_regmap,
312};
313
314static const u32 rt9467_otg_microamp[] = {
315	500000, 700000, 1100000, 1300000, 1800000, 2100000, 2400000, 3000000
316};
317
318static const struct regulator_desc rt9467_otg_desc = {
319	.name = "rt9476-usb-otg-vbus",
320	.of_match = "usb-otg-vbus-regulator",
321	.of_parse_cb = rt9467_otg_of_parse_cb,
322	.type = REGULATOR_VOLTAGE,
323	.owner = THIS_MODULE,
324	.min_uV = RT9467_OTG_MIN_uV,
325	.uV_step = RT9467_OTG_STEP_uV,
326	.n_voltages = RT9467_NUM_VOTG,
327	.curr_table = rt9467_otg_microamp,
328	.n_current_limits = ARRAY_SIZE(rt9467_otg_microamp),
329	.csel_reg = RT9467_REG_CHG_CTRL10,
330	.csel_mask = RT9467_MASK_OTG_CSEL,
331	.vsel_reg = RT9467_REG_CHG_CTRL5,
332	.vsel_mask = RT9467_MASK_OTG_VSEL,
333	.enable_reg = RT9467_REG_CHG_CTRL1,
334	.enable_mask = RT9467_MASK_OTG_EN,
335	.ops = &rt9467_otg_regulator_ops,
336};
337
338static int rt9467_register_otg_regulator(struct rt9467_chg_data *data)
339{
340	struct regulator_config cfg = {
341		.dev = data->dev,
342		.regmap = data->regmap,
343		.driver_data = data,
344	};
345
346	data->rdev = devm_regulator_register(data->dev, &rt9467_otg_desc, &cfg);
347	return PTR_ERR_OR_ZERO(data->rdev);
348}
349
350static int rt9467_get_value_from_ranges(struct rt9467_chg_data *data,
351					enum rt9467_fields field,
352					enum rt9467_ranges rsel,
353					int *value)
354{
355	const struct linear_range *range = rt9467_ranges + rsel;
356	unsigned int sel;
357	int ret;
358
359	ret = regmap_field_read(data->rm_field[field], &sel);
360	if (ret)
361		return ret;
362
363	return linear_range_get_value(range, sel, value);
364}
365
366static int rt9467_set_value_from_ranges(struct rt9467_chg_data *data,
367					enum rt9467_fields field,
368					enum rt9467_ranges rsel,
369					int value)
370{
371	const struct linear_range *range = rt9467_ranges + rsel;
372	unsigned int sel;
373	bool found;
374	int ret;
375
376	if (rsel == RT9467_RANGE_VMIVR) {
377		ret = linear_range_get_selector_high(range, value, &sel, &found);
378		if (ret)
379			value = range->max_sel;
380	} else {
381		linear_range_get_selector_within(range, value, &sel);
382	}
383
384	return regmap_field_write(data->rm_field[field], sel);
385}
386
387static int rt9467_get_adc_sel(enum rt9467_adc_chan chan, int *sel)
388{
389	switch (chan) {
390	case RT9467_ADC_VBUS_DIV5:
391	case RT9467_ADC_VBUS_DIV2:
392	case RT9467_ADC_VSYS:
393	case RT9467_ADC_VBAT:
394		*sel = chan + 1;
395		return 0;
396	case RT9467_ADC_TS_BAT:
397		*sel = chan + 2;
398		return 0;
399	case RT9467_ADC_IBUS:
400	case RT9467_ADC_IBAT:
401		*sel = chan + 3;
402		return 0;
403	case RT9467_ADC_REGN:
404	case RT9467_ADC_TEMP_JC:
405		*sel = chan + 4;
406		return 0;
407	default:
408		return -EINVAL;
409	}
410}
411
412static int rt9467_get_adc_raw_data(struct rt9467_chg_data *data,
413				   enum rt9467_adc_chan chan, int *val)
414{
415	unsigned int adc_stat, reg_val, adc_sel;
416	__be16 chan_raw_data;
417	int ret;
418
419	mutex_lock(&data->adc_lock);
420
421	ret = rt9467_get_adc_sel(chan, &adc_sel);
422	if (ret)
423		goto adc_unlock;
424
425	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
426	if (ret) {
427		dev_err(data->dev, "Failed to clear ADC enable\n");
428		goto adc_unlock;
429	}
430
431	reg_val = RT9467_MASK_ADC_START | FIELD_PREP(RT9467_MASK_ADC_IN_SEL, adc_sel);
432	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, reg_val);
433	if (ret)
434		goto adc_unlock;
435
436	/* Minimum wait time for one channel processing */
437	msleep(RT9467_ADCCONV_TIME_MS);
438
439	ret = regmap_read_poll_timeout(data->regmap, RT9467_REG_CHG_ADC,
440				       adc_stat,
441				       !(adc_stat & RT9467_MASK_ADC_START),
442				       MILLI, RT9467_ADCCONV_TIME_MS * MILLI);
443	if (ret) {
444		dev_err(data->dev, "Failed to wait ADC conversion, chan = %d\n", chan);
445		goto adc_unlock;
446	}
447
448	ret = regmap_raw_read(data->regmap, RT9467_REG_ADC_DATA_H,
449			      &chan_raw_data, sizeof(chan_raw_data));
450	if (ret)
451		goto adc_unlock;
452
453	*val = be16_to_cpu(chan_raw_data);
454
455adc_unlock:
456	mutex_unlock(&data->adc_lock);
457	return ret;
458}
459
460static int rt9467_get_adc(struct rt9467_chg_data *data,
461			  enum rt9467_adc_chan chan, int *val)
462{
463	unsigned int aicr_ua, ichg_ua;
464	int ret;
465
466	ret = rt9467_get_adc_raw_data(data, chan, val);
467	if (ret)
468		return ret;
469
470	switch (chan) {
471	case RT9467_ADC_VBUS_DIV5:
472		*val *= 25000;
473		return 0;
474	case RT9467_ADC_VBUS_DIV2:
475		*val *= 10000;
476		return 0;
477	case RT9467_ADC_VBAT:
478	case RT9467_ADC_VSYS:
479	case RT9467_ADC_REGN:
480		*val *= 5000;
481		return 0;
482	case RT9467_ADC_TS_BAT:
483		*val /= 400;
484		return 0;
485	case RT9467_ADC_IBUS:
486		/* UUG MOS turn-on ratio will affect the IBUS adc scale */
487		ret = rt9467_get_value_from_ranges(data, F_IAICR,
488						   RT9467_RANGE_IAICR, &aicr_ua);
489		if (ret)
490			return ret;
491
492		*val *= aicr_ua < 400000 ? 29480 : 50000;
493		return 0;
494	case RT9467_ADC_IBAT:
495		/* PP MOS turn-on ratio will affect the ICHG adc scale */
496		ret = rt9467_get_value_from_ranges(data, F_ICHG,
497						   RT9467_RANGE_ICHG, &ichg_ua);
498		if (ret)
499			return ret;
500
501		*val *= ichg_ua <= 400000 ? 28500 :
502			ichg_ua <= 800000 ? 31500 : 500000;
503		return 0;
504	case RT9467_ADC_TEMP_JC:
505		*val = ((*val * 2) - 40) * 10;
506		return 0;
507	default:
508		return -EINVAL;
509	}
510}
511
512static int rt9467_psy_get_status(struct rt9467_chg_data *data, int *state)
513{
514	unsigned int status;
515	int ret;
516
517	ret = regmap_field_read(data->rm_field[F_CHG_STAT], &status);
518	if (ret)
519		return ret;
520
521	switch (status) {
522	case RT9467_STAT_READY:
523		*state = POWER_SUPPLY_STATUS_NOT_CHARGING;
524		return 0;
525	case RT9467_STAT_PROGRESS:
526		*state = POWER_SUPPLY_STATUS_CHARGING;
527		return 0;
528	case RT9467_STAT_CHARGE_DONE:
529		*state = POWER_SUPPLY_STATUS_FULL;
530		return 0;
531	default:
532		*state = POWER_SUPPLY_STATUS_UNKNOWN;
533		return 0;
534	}
535}
536
537static int rt9467_psy_set_ichg(struct rt9467_chg_data *data, int microamp)
538{
539	int ret;
540
541	mutex_lock(&data->ichg_ieoc_lock);
542
543	if (microamp < 500000) {
544		dev_err(data->dev, "Minimum value must be 500mA\n");
545		microamp = 500000;
546	}
547
548	ret = rt9467_set_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG, microamp);
549	if (ret)
550		goto out;
551
552	ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
553					   &data->ichg_ua);
554	if (ret)
555		goto out;
556
557out:
558	mutex_unlock(&data->ichg_ieoc_lock);
559	return ret;
560}
561
562static int rt9467_run_aicl(struct rt9467_chg_data *data)
563{
564	unsigned int statc, aicl_vth;
565	int mivr_vth, aicr_get;
566	int ret = 0;
567
568
569	ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &statc);
570	if (ret) {
571		dev_err(data->dev, "Failed to read status\n");
572		return ret;
573	}
574
575	if (!(statc & RT9467_MASK_PWR_RDY) || !(statc & RT9467_MASK_MIVR_STAT)) {
576		dev_info(data->dev, "Condition not matched %d\n", statc);
577		return 0;
578	}
579
580	ret = rt9467_get_value_from_ranges(data, F_VMIVR, RT9467_RANGE_VMIVR,
581					   &mivr_vth);
582	if (ret) {
583		dev_err(data->dev, "Failed to get mivr\n");
584		return ret;
585	}
586
587	/* AICL_VTH = MIVR_VTH + 200mV */
588	aicl_vth = mivr_vth + RT9467_AICLVTH_GAP_uV;
589	ret = rt9467_set_value_from_ranges(data, F_AICL_VTH,
590					   RT9467_RANGE_AICL_VTH, aicl_vth);
591
592	/* Trigger AICL function */
593	ret = regmap_field_write(data->rm_field[F_AICL_MEAS], 1);
594	if (ret) {
595		dev_err(data->dev, "Failed to set aicl measurement\n");
596		return ret;
597	}
598
599	reinit_completion(&data->aicl_done);
600	ret = wait_for_completion_timeout(&data->aicl_done, msecs_to_jiffies(3500));
601	if (ret == 0)
602		return -ETIMEDOUT;
603
604	ret = rt9467_get_value_from_ranges(data, F_IAICR, RT9467_RANGE_IAICR, &aicr_get);
605	if (ret) {
606		dev_err(data->dev, "Failed to get aicr\n");
607		return ret;
608	}
609
610	dev_info(data->dev, "aicr get = %d uA\n", aicr_get);
611	return 0;
612}
613
614static int rt9467_psy_set_ieoc(struct rt9467_chg_data *data, int microamp)
615{
616	int ret;
617
618	mutex_lock(&data->ichg_ieoc_lock);
619
620	ret = rt9467_set_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, microamp);
621	if (ret)
622		goto out;
623
624	ret = rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC, &data->ieoc_ua);
625	if (ret)
626		goto out;
627
628out:
629	mutex_unlock(&data->ichg_ieoc_lock);
630	return ret;
631}
632
633static const enum power_supply_usb_type rt9467_chg_usb_types[] = {
634	POWER_SUPPLY_USB_TYPE_UNKNOWN,
635	POWER_SUPPLY_USB_TYPE_SDP,
636	POWER_SUPPLY_USB_TYPE_DCP,
637	POWER_SUPPLY_USB_TYPE_CDP,
638};
639
640static const enum power_supply_property rt9467_chg_properties[] = {
641	POWER_SUPPLY_PROP_STATUS,
642	POWER_SUPPLY_PROP_ONLINE,
643	POWER_SUPPLY_PROP_CURRENT_MAX,
644	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
645	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
646	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
647	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
648	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
649	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
650	POWER_SUPPLY_PROP_USB_TYPE,
651	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
652	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
653};
654
655static int rt9467_psy_get_property(struct power_supply *psy,
656				   enum power_supply_property psp,
657				   union power_supply_propval *val)
658{
659	struct rt9467_chg_data *data = power_supply_get_drvdata(psy);
660
661	switch (psp) {
662	case POWER_SUPPLY_PROP_STATUS:
663		return rt9467_psy_get_status(data, &val->intval);
664	case POWER_SUPPLY_PROP_ONLINE:
665		return regmap_field_read(data->rm_field[F_PWR_RDY], &val->intval);
666	case POWER_SUPPLY_PROP_CURRENT_MAX:
667		mutex_lock(&data->attach_lock);
668		if (data->psy_usb_type == POWER_SUPPLY_USB_TYPE_UNKNOWN ||
669		    data->psy_usb_type == POWER_SUPPLY_USB_TYPE_SDP)
670			val->intval = 500000;
671		else
672			val->intval = 1500000;
673		mutex_unlock(&data->attach_lock);
674		return 0;
675	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
676		mutex_lock(&data->ichg_ieoc_lock);
677		val->intval = data->ichg_ua;
678		mutex_unlock(&data->ichg_ieoc_lock);
679		return 0;
680	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
681		val->intval = RT9467_ICHG_MAX_uA;
682		return 0;
683	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
684		return rt9467_get_value_from_ranges(data, F_VOREG,
685						    RT9467_RANGE_VOREG,
686						    &val->intval);
687	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
688		val->intval = RT9467_CV_MAX_uV;
689		return 0;
690	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
691		return rt9467_get_value_from_ranges(data, F_IAICR,
692						    RT9467_RANGE_IAICR,
693						    &val->intval);
694	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
695		return rt9467_get_value_from_ranges(data, F_VMIVR,
696						    RT9467_RANGE_VMIVR,
697						    &val->intval);
698	case POWER_SUPPLY_PROP_USB_TYPE:
699		mutex_lock(&data->attach_lock);
700		val->intval = data->psy_usb_type;
701		mutex_unlock(&data->attach_lock);
702		return 0;
703	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
704		return rt9467_get_value_from_ranges(data, F_IPREC,
705						    RT9467_RANGE_IPREC,
706						    &val->intval);
707	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
708		mutex_lock(&data->ichg_ieoc_lock);
709		val->intval = data->ieoc_ua;
710		mutex_unlock(&data->ichg_ieoc_lock);
711		return 0;
712	default:
713		return -ENODATA;
714	}
715}
716
717static int rt9467_psy_set_property(struct power_supply *psy,
718				   enum power_supply_property psp,
719				   const union power_supply_propval *val)
720{
721	struct rt9467_chg_data *data = power_supply_get_drvdata(psy);
722
723	switch (psp) {
724	case POWER_SUPPLY_PROP_STATUS:
725		return regmap_field_write(data->rm_field[F_CHG_EN], val->intval);
726	case POWER_SUPPLY_PROP_ONLINE:
727		return regmap_field_write(data->rm_field[F_HZ], val->intval);
728	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
729		return rt9467_psy_set_ichg(data, val->intval);
730	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
731		return rt9467_set_value_from_ranges(data, F_VOREG,
732						    RT9467_RANGE_VOREG, val->intval);
733	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
734		if (val->intval == -1)
735			return rt9467_run_aicl(data);
736		else
737			return rt9467_set_value_from_ranges(data, F_IAICR,
738							    RT9467_RANGE_IAICR,
739							    val->intval);
740	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
741		return rt9467_set_value_from_ranges(data, F_VMIVR,
742						    RT9467_RANGE_VMIVR, val->intval);
743	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
744		return rt9467_set_value_from_ranges(data, F_IPREC,
745						    RT9467_RANGE_IPREC, val->intval);
746	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
747		return rt9467_psy_set_ieoc(data, val->intval);
748	case POWER_SUPPLY_PROP_USB_TYPE:
749		return regmap_field_write(data->rm_field[F_USBCHGEN], val->intval);
750	default:
751		return -EINVAL;
752	}
753}
754
755static int rt9467_chg_prop_is_writeable(struct power_supply *psy,
756					enum power_supply_property psp)
757{
758	switch (psp) {
759	case POWER_SUPPLY_PROP_STATUS:
760	case POWER_SUPPLY_PROP_ONLINE:
761	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
762	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
763	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
764	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
765	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
766	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
767	case POWER_SUPPLY_PROP_USB_TYPE:
768		return 1;
769	default:
770		return 0;
771	}
772}
773
774static const struct power_supply_desc rt9467_chg_psy_desc = {
775	.name = "rt9467-charger",
776	.type = POWER_SUPPLY_TYPE_USB,
777	.usb_types = rt9467_chg_usb_types,
778	.num_usb_types = ARRAY_SIZE(rt9467_chg_usb_types),
779	.properties = rt9467_chg_properties,
780	.num_properties = ARRAY_SIZE(rt9467_chg_properties),
781	.property_is_writeable = rt9467_chg_prop_is_writeable,
782	.get_property = rt9467_psy_get_property,
783	.set_property = rt9467_psy_set_property,
784};
785
786static inline struct rt9467_chg_data *psy_device_to_chip(struct device *dev)
787{
788	return power_supply_get_drvdata(to_power_supply(dev));
789}
790
791static ssize_t sysoff_enable_show(struct device *dev,
792				  struct device_attribute *attr, char *buf)
793{
794	struct rt9467_chg_data *data = psy_device_to_chip(dev);
795	unsigned int sysoff_enable;
796	int ret;
797
798	ret = regmap_field_read(data->rm_field[F_SHIP_MODE], &sysoff_enable);
799	if (ret)
800		return ret;
801
802	return sysfs_emit(buf, "%d\n", sysoff_enable);
803}
804
805static ssize_t sysoff_enable_store(struct device *dev,
806				   struct device_attribute *attr,
807				   const char *buf, size_t count)
808{
809	struct rt9467_chg_data *data = psy_device_to_chip(dev);
810	unsigned int tmp;
811	int ret;
812
813	ret = kstrtouint(buf, 10, &tmp);
814	if (ret)
815		return ret;
816
817	ret = regmap_field_write(data->rm_field[F_SHIP_MODE], !!tmp);
818	if (ret)
819		return ret;
820
821	return count;
822}
823
824static DEVICE_ATTR_RW(sysoff_enable);
825
826static struct attribute *rt9467_sysfs_attrs[] = {
827	&dev_attr_sysoff_enable.attr,
828	NULL
829};
830
831ATTRIBUTE_GROUPS(rt9467_sysfs);
832
833static int rt9467_register_psy(struct rt9467_chg_data *data)
834{
835	struct power_supply_config cfg = {
836		.drv_data = data,
837		.of_node = dev_of_node(data->dev),
838		.attr_grp = rt9467_sysfs_groups,
839	};
840
841	data->psy = devm_power_supply_register(data->dev, &rt9467_chg_psy_desc,
842					       &cfg);
843	return PTR_ERR_OR_ZERO(data->psy);
844}
845
846static int rt9467_mivr_handler(struct rt9467_chg_data *data)
847{
848	unsigned int mivr_act;
849	int ret, ibus_ma;
850
851	/*
852	 * back-boost workaround
853	 * If (mivr_active & ibus < 100mA), toggle cfo bit
854	 */
855	ret = regmap_field_read(data->rm_field[F_CHG_MIVR], &mivr_act);
856	if (ret) {
857		dev_err(data->dev, "Failed to read MIVR stat\n");
858		return ret;
859	}
860
861	if (!mivr_act)
862		return 0;
863
864	ret = rt9467_get_adc(data, RT9467_ADC_IBUS, &ibus_ma);
865	if (ret) {
866		dev_err(data->dev, "Failed to get IBUS\n");
867		return ret;
868	}
869
870	if (ibus_ma < 100000) {
871		ret = regmap_field_write(data->rm_field[F_CFO_EN], 0);
872		ret |= regmap_field_write(data->rm_field[F_CFO_EN], 1);
873		if (ret)
874			dev_err(data->dev, "Failed to toggle cfo\n");
875	}
876
877	return ret;
878}
879
880static irqreturn_t rt9467_statc_handler(int irq, void *priv)
881{
882	struct rt9467_chg_data *data = priv;
883	unsigned int new_stat, evts = 0;
884	int ret;
885
886	ret = regmap_read(data->regmap, RT9467_REG_CHG_STATC, &new_stat);
887	if (ret) {
888		dev_err(data->dev, "Failed to read chg_statc\n");
889		return IRQ_NONE;
890	}
891
892	evts = data->old_stat ^ new_stat;
893	data->old_stat = new_stat;
894
895	if ((evts & new_stat) & RT9467_MASK_MIVR_STAT) {
896		ret = rt9467_mivr_handler(data);
897		if (ret)
898			dev_err(data->dev, "Failed to handle mivr stat\n");
899	}
900
901	return IRQ_HANDLED;
902}
903
904static irqreturn_t rt9467_wdt_handler(int irq, void *priv)
905{
906	struct rt9467_chg_data *data = priv;
907	unsigned int dev_id;
908	int ret;
909
910	/* Any i2c communication can kick watchdog timer */
911	ret = regmap_read(data->regmap, RT9467_REG_DEVICE_ID, &dev_id);
912	if (ret) {
913		dev_err(data->dev, "Failed to kick wdt (%d)\n", ret);
914		return IRQ_NONE;
915	}
916
917	return IRQ_HANDLED;
918}
919
920static int rt9467_report_usb_state(struct rt9467_chg_data *data)
921{
922	unsigned int usb_stat, power_ready;
923	bool psy_changed = true;
924	int ret;
925
926	ret = regmap_field_read(data->rm_field[F_USB_STATUS], &usb_stat);
927	ret |= regmap_field_read(data->rm_field[F_PWR_RDY], &power_ready);
928	if (ret)
929		return ret;
930
931	if (!power_ready)
932		usb_stat = RT9467_CHG_TYPE_NOVBUS;
933
934	mutex_lock(&data->attach_lock);
935
936	switch (usb_stat) {
937	case RT9467_CHG_TYPE_NOVBUS:
938		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
939		break;
940	case RT9467_CHG_TYPE_SDP:
941		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_SDP;
942		break;
943	case RT9467_CHG_TYPE_SDPNSTD:
944		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
945		break;
946	case RT9467_CHG_TYPE_DCP:
947		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_DCP;
948		break;
949	case RT9467_CHG_TYPE_CDP:
950		data->psy_usb_type = POWER_SUPPLY_USB_TYPE_CDP;
951		break;
952	case RT9467_CHG_TYPE_UNDER_GOING:
953	default:
954		psy_changed = false;
955		break;
956	}
957
958	mutex_unlock(&data->attach_lock);
959
960	if (psy_changed)
961		power_supply_changed(data->psy);
962
963	return 0;
964}
965
966static irqreturn_t rt9467_usb_state_handler(int irq, void *priv)
967{
968	struct rt9467_chg_data *data = priv;
969	int ret;
970
971	ret = rt9467_report_usb_state(data);
972	if (ret) {
973		dev_err(data->dev, "Failed to report attach type (%d)\n", ret);
974		return IRQ_NONE;
975	}
976
977	return IRQ_HANDLED;
978}
979
980static irqreturn_t rt9467_aiclmeas_handler(int irq, void *priv)
981{
982	struct rt9467_chg_data *data = priv;
983
984	complete(&data->aicl_done);
985	return IRQ_HANDLED;
986}
987
988#define RT9467_IRQ_DESC(_name, _handler_func, _hwirq)		\
989{								\
990	.name = #_name,						\
991	.handler = rt9467_##_handler_func##_handler,		\
992	.hwirq = _hwirq,					\
993}
994
995static int rt9467_request_interrupt(struct rt9467_chg_data *data)
996{
997	struct device *dev = data->dev;
998	static const struct {
999		const char *name;
1000		int hwirq;
1001		irq_handler_t handler;
1002	} rt9467_exclusive_irqs[] = {
1003		RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
1004		RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
1005		RT9467_IRQ_DESC(attach, usb_state, RT9467_IRQ_ATTACH),
1006		RT9467_IRQ_DESC(detach,	usb_state, RT9467_IRQ_DETACH),
1007		RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
1008	}, rt9466_exclusive_irqs[] = {
1009		RT9467_IRQ_DESC(statc, statc, RT9467_IRQ_TS_STATC),
1010		RT9467_IRQ_DESC(wdt, wdt, RT9467_IRQ_WDTMR),
1011		RT9467_IRQ_DESC(aiclmeas, aiclmeas, RT9467_IRQ_CHG_AICLM),
1012	}, *chg_irqs;
1013	int num_chg_irqs, i, virq, ret;
1014
1015	if (data->vid == RT9466_VID) {
1016		chg_irqs = rt9466_exclusive_irqs;
1017		num_chg_irqs = ARRAY_SIZE(rt9466_exclusive_irqs);
1018	} else {
1019		chg_irqs = rt9467_exclusive_irqs;
1020		num_chg_irqs = ARRAY_SIZE(rt9467_exclusive_irqs);
1021	}
1022
1023	for (i = 0; i < num_chg_irqs; i++) {
1024		virq = regmap_irq_get_virq(data->irq_chip_data, chg_irqs[i].hwirq);
1025		if (virq <= 0)
1026			return dev_err_probe(dev, -EINVAL, "Failed to get (%s) irq\n",
1027					     chg_irqs[i].name);
1028
1029		ret = devm_request_threaded_irq(dev, virq, NULL, chg_irqs[i].handler,
1030						IRQF_ONESHOT, chg_irqs[i].name, data);
1031		if (ret)
1032			return dev_err_probe(dev, ret, "Failed to request (%s) irq\n",
1033					     chg_irqs[i].name);
1034	}
1035
1036	return 0;
1037}
1038
1039static int rt9467_do_charger_init(struct rt9467_chg_data *data)
1040{
1041	struct device *dev = data->dev;
1042	int ret;
1043
1044	ret = regmap_write(data->regmap, RT9467_REG_CHG_ADC, 0);
1045	if (ret)
1046		return dev_err_probe(dev, ret, "Failed to reset ADC\n");
1047
1048	ret = rt9467_get_value_from_ranges(data, F_ICHG, RT9467_RANGE_ICHG,
1049					   &data->ichg_ua);
1050	ret |= rt9467_get_value_from_ranges(data, F_IEOC, RT9467_RANGE_IEOC,
1051					    &data->ieoc_ua);
1052	if (ret)
1053		return dev_err_probe(dev, ret, "Failed to init ichg/ieoc value\n");
1054
1055	ret = regmap_update_bits(data->regmap, RT9467_REG_CHG_STATC_CTRL,
1056				 RT9467_MASK_PWR_RDY | RT9467_MASK_MIVR_STAT, 0);
1057	if (ret)
1058		return dev_err_probe(dev, ret, "Failed to make statc unmask\n");
1059
1060	/* Select IINLMTSEL to use AICR */
1061	ret = regmap_field_write(data->rm_field[F_IINLMTSEL],
1062				 RT9467_IINLMTSEL_AICR);
1063	if (ret)
1064		return dev_err_probe(dev, ret, "Failed to set iinlmtsel to AICR\n");
1065
1066	/* Wait for AICR Rampping */
1067	msleep(150);
1068
1069	/* Disable hardware ILIM */
1070	ret = regmap_field_write(data->rm_field[F_ILIM_EN], 0);
1071	if (ret)
1072		return dev_err_probe(dev, ret, "Failed to disable hardware ILIM\n");
1073
1074	/* Set inductor OCP to high level */
1075	ret = regmap_field_write(data->rm_field[F_OCP], 1);
1076	if (ret)
1077		return dev_err_probe(dev, ret, "Failed to set higher inductor OCP level\n");
1078
1079	/* Set charge termination default enable */
1080	ret = regmap_field_write(data->rm_field[F_TE], 1);
1081	if (ret)
1082		return dev_err_probe(dev, ret, "Failed to set TE=1\n");
1083
1084	/* Set 12hrs fast charger timer */
1085	ret = regmap_field_write(data->rm_field[F_WT_FC], 4);
1086	if (ret)
1087		return dev_err_probe(dev, ret, "Failed to set WT_FC\n");
1088
1089	/* Toggle BC12 function */
1090	ret = regmap_field_write(data->rm_field[F_USBCHGEN], 0);
1091	if (ret)
1092		return dev_err_probe(dev, ret, "Failed to disable BC12\n");
1093
1094	return regmap_field_write(data->rm_field[F_USBCHGEN], 1);
1095}
1096
1097static bool rt9467_is_accessible_reg(struct device *dev, unsigned int reg)
1098{
1099	switch (reg) {
1100	case 0x00 ... 0x1A:
1101	case 0x20 ... 0x38:
1102	case 0x40 ... 0x49:
1103	case 0x50 ... 0x57:
1104	case 0x60 ... 0x67:
1105	case 0x70 ... 0x79:
1106	case 0x82 ... 0x85:
1107		return true;
1108	default:
1109		return false;
1110	}
1111}
1112
1113static const struct regmap_config rt9467_regmap_config = {
1114	.reg_bits = 8,
1115	.val_bits = 8,
1116	.max_register = 0x85,
1117	.writeable_reg = rt9467_is_accessible_reg,
1118	.readable_reg = rt9467_is_accessible_reg,
1119};
1120
1121static int rt9467_check_vendor_info(struct rt9467_chg_data *data)
1122{
1123	unsigned int vid;
1124	int ret;
1125
1126	ret = regmap_field_read(data->rm_field[F_VENDOR], &vid);
1127	if (ret) {
1128		dev_err(data->dev, "Failed to get vid\n");
1129		return ret;
1130	}
1131
1132	if ((vid != RT9466_VID) && (vid != RT9467_VID))
1133		return dev_err_probe(data->dev, -ENODEV,
1134				     "VID not correct [0x%02X]\n", vid);
1135
1136	data->vid = vid;
1137	return 0;
1138}
1139
1140static int rt9467_reset_chip(struct rt9467_chg_data *data)
1141{
1142	int ret;
1143
1144	/* Disable HZ before reset chip */
1145	ret = regmap_field_write(data->rm_field[F_HZ], 0);
1146	if (ret)
1147		return ret;
1148
1149	return regmap_field_write(data->rm_field[F_RST], 1);
1150}
1151
1152static void rt9467_chg_destroy_adc_lock(void *data)
1153{
1154	struct mutex *adc_lock = data;
1155
1156	mutex_destroy(adc_lock);
1157}
1158
1159static void rt9467_chg_destroy_attach_lock(void *data)
1160{
1161	struct mutex *attach_lock = data;
1162
1163	mutex_destroy(attach_lock);
1164}
1165
1166static void rt9467_chg_destroy_ichg_ieoc_lock(void *data)
1167{
1168	struct mutex *ichg_ieoc_lock = data;
1169
1170	mutex_destroy(ichg_ieoc_lock);
1171}
1172
1173static void rt9467_chg_complete_aicl_done(void *data)
1174{
1175	struct completion *aicl_done = data;
1176
1177	complete(aicl_done);
1178}
1179
1180static int rt9467_charger_probe(struct i2c_client *i2c)
1181{
1182	struct device *dev = &i2c->dev;
1183	struct rt9467_chg_data *data;
1184	struct gpio_desc *ceb_gpio;
1185	int ret;
1186
1187	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
1188	if (!data)
1189		return -ENOMEM;
1190
1191	data->dev = &i2c->dev;
1192	i2c_set_clientdata(i2c, data);
1193
1194	/* Default pull charge enable gpio to make 'CHG_EN' by SW control only */
1195	ceb_gpio = devm_gpiod_get_optional(dev, "charge-enable", GPIOD_OUT_HIGH);
1196	if (IS_ERR(ceb_gpio))
1197		return dev_err_probe(dev, PTR_ERR(ceb_gpio),
1198				     "Failed to config charge enable gpio\n");
1199
1200	data->regmap = devm_regmap_init_i2c(i2c, &rt9467_regmap_config);
1201	if (IS_ERR(data->regmap))
1202		return dev_err_probe(dev, PTR_ERR(data->regmap),
1203				     "Failed to init regmap\n");
1204
1205	ret = devm_regmap_field_bulk_alloc(dev, data->regmap,
1206					   data->rm_field, rt9467_chg_fields,
1207					   ARRAY_SIZE(rt9467_chg_fields));
1208	if (ret)
1209		return dev_err_probe(dev, ret, "Failed to alloc regmap fields\n");
1210
1211	ret = rt9467_check_vendor_info(data);
1212	if (ret)
1213		return dev_err_probe(dev, ret, "Failed to check vendor info");
1214
1215	ret = rt9467_reset_chip(data);
1216	if (ret)
1217		return dev_err_probe(dev, ret, "Failed to reset chip\n");
1218
1219	ret = devm_regmap_add_irq_chip(dev, data->regmap, i2c->irq,
1220				       IRQF_TRIGGER_LOW | IRQF_ONESHOT, 0,
1221				       &rt9467_irq_chip, &data->irq_chip_data);
1222	if (ret)
1223		return dev_err_probe(dev, ret, "Failed to add irq chip\n");
1224
1225	mutex_init(&data->adc_lock);
1226	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_adc_lock,
1227				       &data->adc_lock);
1228	if (ret)
1229		return dev_err_probe(dev, ret, "Failed to init ADC lock\n");
1230
1231	mutex_init(&data->attach_lock);
1232	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_attach_lock,
1233				       &data->attach_lock);
1234	if (ret)
1235		return dev_err_probe(dev, ret, "Failed to init attach lock\n");
1236
1237	mutex_init(&data->ichg_ieoc_lock);
1238	ret = devm_add_action_or_reset(dev, rt9467_chg_destroy_ichg_ieoc_lock,
1239				       &data->ichg_ieoc_lock);
1240	if (ret)
1241		return dev_err_probe(dev, ret, "Failed to init ICHG/IEOC lock\n");
1242
1243	init_completion(&data->aicl_done);
1244	ret = devm_add_action_or_reset(dev, rt9467_chg_complete_aicl_done,
1245				       &data->aicl_done);
1246	if (ret)
1247		return dev_err_probe(dev, ret, "Failed to init AICL done completion\n");
1248
1249	ret = rt9467_do_charger_init(data);
1250	if (ret)
1251		return ret;
1252
1253	ret = rt9467_register_otg_regulator(data);
1254	if (ret)
1255		return ret;
1256
1257	ret = rt9467_register_psy(data);
1258	if (ret)
1259		return ret;
1260
1261	return rt9467_request_interrupt(data);
1262}
1263
1264static const struct of_device_id rt9467_charger_of_match_table[] = {
1265	{ .compatible = "richtek,rt9467", },
1266	{}
1267};
1268MODULE_DEVICE_TABLE(of, rt9467_charger_of_match_table);
1269
1270static struct i2c_driver rt9467_charger_driver = {
1271	.driver = {
1272		.name = "rt9467-charger",
1273		.of_match_table = rt9467_charger_of_match_table,
1274	},
1275	.probe = rt9467_charger_probe,
1276};
1277module_i2c_driver(rt9467_charger_driver);
1278
1279MODULE_DESCRIPTION("Richtek RT9467 Charger Driver");
1280MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
1281MODULE_AUTHOR("ChiaEn Wu <chiaen_wu@richtek.com>");
1282MODULE_LICENSE("GPL");
1283