xref: /openbmc/linux/drivers/power/supply/bq256xx_charger.c (revision 1188f7f111c61394ec56beb8e30322305a8220b6)
1  // SPDX-License-Identifier: GPL-2.0
2  // BQ256XX Battery Charger Driver
3  // Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
4  
5  #include <linux/err.h>
6  #include <linux/i2c.h>
7  #include <linux/init.h>
8  #include <linux/interrupt.h>
9  #include <linux/kernel.h>
10  #include <linux/module.h>
11  #include <linux/gpio/consumer.h>
12  #include <linux/power_supply.h>
13  #include <linux/regmap.h>
14  #include <linux/types.h>
15  #include <linux/usb/phy.h>
16  #include <linux/device.h>
17  #include <linux/moduleparam.h>
18  #include <linux/slab.h>
19  #include <linux/acpi.h>
20  
21  #define BQ256XX_MANUFACTURER "Texas Instruments"
22  
23  #define BQ256XX_INPUT_CURRENT_LIMIT		0x00
24  #define BQ256XX_CHARGER_CONTROL_0		0x01
25  #define BQ256XX_CHARGE_CURRENT_LIMIT		0x02
26  #define BQ256XX_PRECHG_AND_TERM_CURR_LIM	0x03
27  #define BQ256XX_BATTERY_VOLTAGE_LIMIT		0x04
28  #define BQ256XX_CHARGER_CONTROL_1		0x05
29  #define BQ256XX_CHARGER_CONTROL_2		0x06
30  #define BQ256XX_CHARGER_CONTROL_3		0x07
31  #define BQ256XX_CHARGER_STATUS_0		0x08
32  #define BQ256XX_CHARGER_STATUS_1		0x09
33  #define BQ256XX_CHARGER_STATUS_2		0x0a
34  #define BQ256XX_PART_INFORMATION		0x0b
35  #define BQ256XX_CHARGER_CONTROL_4		0x0c
36  
37  #define BQ256XX_IINDPM_MASK		GENMASK(4, 0)
38  #define BQ256XX_IINDPM_STEP_uA		100000
39  #define BQ256XX_IINDPM_OFFSET_uA	100000
40  #define BQ256XX_IINDPM_MIN_uA		100000
41  #define BQ256XX_IINDPM_MAX_uA		3200000
42  #define BQ256XX_IINDPM_DEF_uA		2400000
43  
44  #define BQ256XX_TS_IGNORE		BIT(6)
45  #define BQ256XX_TS_IGNORE_SHIFT		6
46  
47  #define BQ256XX_VINDPM_MASK		GENMASK(3, 0)
48  #define BQ256XX_VINDPM_STEP_uV		100000
49  #define BQ256XX_VINDPM_OFFSET_uV	3900000
50  #define BQ256XX_VINDPM_MIN_uV		3900000
51  #define BQ256XX_VINDPM_MAX_uV		5400000
52  #define BQ256XX_VINDPM_DEF_uV		4500000
53  
54  #define BQ256XX_VBATREG_MASK		GENMASK(7, 3)
55  #define BQ2560X_VBATREG_STEP_uV		32000
56  #define BQ2560X_VBATREG_OFFSET_uV	3856000
57  #define BQ2560X_VBATREG_MIN_uV		3856000
58  #define BQ2560X_VBATREG_MAX_uV		4624000
59  #define BQ2560X_VBATREG_DEF_uV		4208000
60  #define BQ25601D_VBATREG_OFFSET_uV	3847000
61  #define BQ25601D_VBATREG_MIN_uV		3847000
62  #define BQ25601D_VBATREG_MAX_uV		4615000
63  #define BQ25601D_VBATREG_DEF_uV		4199000
64  #define BQ2561X_VBATREG_STEP_uV		10000
65  #define BQ25611D_VBATREG_MIN_uV		3494000
66  #define BQ25611D_VBATREG_MAX_uV		4510000
67  #define BQ25611D_VBATREG_DEF_uV		4190000
68  #define BQ25618_VBATREG_MIN_uV		3504000
69  #define BQ25618_VBATREG_MAX_uV		4500000
70  #define BQ25618_VBATREG_DEF_uV		4200000
71  #define BQ256XX_VBATREG_BIT_SHIFT	3
72  #define BQ2561X_VBATREG_THRESH		0x8
73  #define BQ25611D_VBATREG_THRESH_uV	4290000
74  #define BQ25618_VBATREG_THRESH_uV	4300000
75  
76  #define BQ256XX_CHG_CONFIG_MASK		BIT(4)
77  #define BQ256XX_CHG_CONFIG_BIT_SHIFT	4
78  
79  #define BQ256XX_ITERM_MASK		GENMASK(3, 0)
80  #define BQ256XX_ITERM_STEP_uA		60000
81  #define BQ256XX_ITERM_OFFSET_uA		60000
82  #define BQ256XX_ITERM_MIN_uA		60000
83  #define BQ256XX_ITERM_MAX_uA		780000
84  #define BQ256XX_ITERM_DEF_uA		180000
85  #define BQ25618_ITERM_STEP_uA		20000
86  #define BQ25618_ITERM_OFFSET_uA		20000
87  #define BQ25618_ITERM_MIN_uA		20000
88  #define BQ25618_ITERM_MAX_uA		260000
89  #define BQ25618_ITERM_DEF_uA		60000
90  
91  #define BQ256XX_IPRECHG_MASK		GENMASK(7, 4)
92  #define BQ256XX_IPRECHG_STEP_uA		60000
93  #define BQ256XX_IPRECHG_OFFSET_uA	60000
94  #define BQ256XX_IPRECHG_MIN_uA		60000
95  #define BQ256XX_IPRECHG_MAX_uA		780000
96  #define BQ256XX_IPRECHG_DEF_uA		180000
97  #define BQ25618_IPRECHG_STEP_uA		20000
98  #define BQ25618_IPRECHG_OFFSET_uA	20000
99  #define BQ25618_IPRECHG_MIN_uA		20000
100  #define BQ25618_IPRECHG_MAX_uA		260000
101  #define BQ25618_IPRECHG_DEF_uA		40000
102  #define BQ256XX_IPRECHG_BIT_SHIFT	4
103  
104  #define BQ256XX_ICHG_MASK		GENMASK(5, 0)
105  #define BQ256XX_ICHG_STEP_uA		60000
106  #define BQ256XX_ICHG_MIN_uA		0
107  #define BQ256XX_ICHG_MAX_uA		3000000
108  #define BQ2560X_ICHG_DEF_uA		2040000
109  #define BQ25611D_ICHG_DEF_uA		1020000
110  #define BQ25618_ICHG_STEP_uA		20000
111  #define BQ25618_ICHG_MIN_uA		0
112  #define BQ25618_ICHG_MAX_uA		1500000
113  #define BQ25618_ICHG_DEF_uA		340000
114  #define BQ25618_ICHG_THRESH		0x3c
115  #define BQ25618_ICHG_THRESH_uA		1180000
116  
117  #define BQ256XX_VBUS_STAT_MASK		GENMASK(7, 5)
118  #define BQ256XX_VBUS_STAT_NO_INPUT	0
119  #define BQ256XX_VBUS_STAT_USB_SDP	BIT(5)
120  #define BQ256XX_VBUS_STAT_USB_CDP	BIT(6)
121  #define BQ256XX_VBUS_STAT_USB_DCP	(BIT(6) | BIT(5))
122  #define BQ256XX_VBUS_STAT_USB_OTG	(BIT(7) | BIT(6) | BIT(5))
123  
124  #define BQ256XX_CHRG_STAT_MASK		GENMASK(4, 3)
125  #define BQ256XX_CHRG_STAT_NOT_CHRGING	0
126  #define BQ256XX_CHRG_STAT_PRECHRGING	BIT(3)
127  #define BQ256XX_CHRG_STAT_FAST_CHRGING	BIT(4)
128  #define BQ256XX_CHRG_STAT_CHRG_TERM	(BIT(4) | BIT(3))
129  
130  #define BQ256XX_PG_STAT_MASK		BIT(2)
131  #define BQ256XX_WDT_FAULT_MASK		BIT(7)
132  #define BQ256XX_CHRG_FAULT_MASK		GENMASK(5, 4)
133  #define BQ256XX_CHRG_FAULT_NORMAL	0
134  #define BQ256XX_CHRG_FAULT_INPUT	BIT(4)
135  #define BQ256XX_CHRG_FAULT_THERM	BIT(5)
136  #define BQ256XX_CHRG_FAULT_CST_EXPIRE	(BIT(5) | BIT(4))
137  #define BQ256XX_BAT_FAULT_MASK		BIT(3)
138  #define BQ256XX_NTC_FAULT_MASK		GENMASK(2, 0)
139  #define BQ256XX_NTC_FAULT_WARM		BIT(1)
140  #define BQ256XX_NTC_FAULT_COOL		(BIT(1) | BIT(0))
141  #define BQ256XX_NTC_FAULT_COLD		(BIT(2) | BIT(0))
142  #define BQ256XX_NTC_FAULT_HOT		(BIT(2) | BIT(1))
143  
144  #define BQ256XX_NUM_WD_VAL	4
145  #define BQ256XX_WATCHDOG_MASK	GENMASK(5, 4)
146  #define BQ256XX_WATCHDOG_MAX	1600000
147  #define BQ256XX_WATCHDOG_DIS	0
148  #define BQ256XX_WDT_BIT_SHIFT	4
149  
150  #define BQ256XX_REG_RST		BIT(7)
151  
152  /**
153   * struct bq256xx_init_data -
154   * @ichg: fast charge current
155   * @iindpm: input current limit
156   * @vbatreg: charge voltage
157   * @iterm: termination current
158   * @iprechg: precharge current
159   * @vindpm: input voltage limit
160   * @ichg_max: maximum fast charge current
161   * @vbatreg_max: maximum charge voltage
162   * @ts_ignore: TS_IGNORE flag
163   */
164  struct bq256xx_init_data {
165  	u32 ichg;
166  	u32 iindpm;
167  	u32 vbatreg;
168  	u32 iterm;
169  	u32 iprechg;
170  	u32 vindpm;
171  	u32 ichg_max;
172  	u32 vbatreg_max;
173  	bool ts_ignore;
174  };
175  
176  /**
177   * struct bq256xx_state -
178   * @vbus_stat: VBUS status according to BQ256XX_CHARGER_STATUS_0
179   * @chrg_stat: charging status according to BQ256XX_CHARGER_STATUS_0
180   * @online: PG status according to BQ256XX_CHARGER_STATUS_0
181   *
182   * @wdt_fault: watchdog fault according to BQ256XX_CHARGER_STATUS_1
183   * @bat_fault: battery fault according to BQ256XX_CHARGER_STATUS_1
184   * @chrg_fault: charging fault according to BQ256XX_CHARGER_STATUS_1
185   * @ntc_fault: TS fault according to BQ256XX_CHARGER_STATUS_1
186   */
187  struct bq256xx_state {
188  	u8 vbus_stat;
189  	u8 chrg_stat;
190  	bool online;
191  
192  	u8 wdt_fault;
193  	u8 bat_fault;
194  	u8 chrg_fault;
195  	u8 ntc_fault;
196  };
197  
198  enum bq256xx_id {
199  	BQ25600,
200  	BQ25600D,
201  	BQ25601,
202  	BQ25601D,
203  	BQ25618,
204  	BQ25619,
205  	BQ25611D,
206  };
207  
208  /**
209   * struct bq256xx_device -
210   * @client: i2c client structure
211   * @regmap: register map structure
212   * @dev: device structure
213   * @charger: power supply registered for the charger
214   * @battery: power supply registered for the battery
215   * @lock: mutex lock structure
216   *
217   * @usb2_phy: usb_phy identifier
218   * @usb3_phy: usb_phy identifier
219   * @usb_nb: notifier block
220   * @usb_work: usb work queue
221   * @usb_event: usb_event code
222   *
223   * @model_name: i2c name string
224   *
225   * @init_data: initialization data
226   * @chip_info: device variant information
227   * @state: device status and faults
228   * @watchdog_timer: watchdog timer value in milliseconds
229   */
230  struct bq256xx_device {
231  	struct i2c_client *client;
232  	struct device *dev;
233  	struct power_supply *charger;
234  	struct power_supply *battery;
235  	struct mutex lock;
236  	struct regmap *regmap;
237  
238  	struct usb_phy *usb2_phy;
239  	struct usb_phy *usb3_phy;
240  	struct notifier_block usb_nb;
241  	struct work_struct usb_work;
242  	unsigned long usb_event;
243  
244  	char model_name[I2C_NAME_SIZE];
245  
246  	struct bq256xx_init_data init_data;
247  	const struct bq256xx_chip_info *chip_info;
248  	struct bq256xx_state state;
249  	int watchdog_timer;
250  };
251  
252  /**
253   * struct bq256xx_chip_info -
254   * @model_id: device instance
255   *
256   * @bq256xx_regmap_config: regmap configuration struct
257   * @bq256xx_get_ichg: pointer to instance specific get_ichg function
258   * @bq256xx_get_iindpm: pointer to instance specific get_iindpm function
259   * @bq256xx_get_vbatreg: pointer to instance specific get_vbatreg function
260   * @bq256xx_get_iterm: pointer to instance specific get_iterm function
261   * @bq256xx_get_iprechg: pointer to instance specific get_iprechg function
262   * @bq256xx_get_vindpm: pointer to instance specific get_vindpm function
263   *
264   * @bq256xx_set_ichg: pointer to instance specific set_ichg function
265   * @bq256xx_set_iindpm: pointer to instance specific set_iindpm function
266   * @bq256xx_set_vbatreg: pointer to instance specific set_vbatreg function
267   * @bq256xx_set_iterm: pointer to instance specific set_iterm function
268   * @bq256xx_set_iprechg: pointer to instance specific set_iprechg function
269   * @bq256xx_set_vindpm: pointer to instance specific set_vindpm function
270   * @bq256xx_set_charge_type: pointer to instance specific set_charge_type function
271   * @bq256xx_set_ts_ignore: pointer to instance specific set_ts_ignore function
272   *
273   * @bq256xx_def_ichg: default ichg value in microamps
274   * @bq256xx_def_iindpm: default iindpm value in microamps
275   * @bq256xx_def_vbatreg: default vbatreg value in microvolts
276   * @bq256xx_def_iterm: default iterm value in microamps
277   * @bq256xx_def_iprechg: default iprechg value in microamps
278   * @bq256xx_def_vindpm: default vindpm value in microvolts
279   *
280   * @bq256xx_max_ichg: maximum charge current in microamps
281   * @bq256xx_max_vbatreg: maximum battery regulation voltage in microvolts
282   *
283   * @has_usb_detect: indicates whether device has BC1.2 detection
284   */
285  struct bq256xx_chip_info {
286  	int model_id;
287  
288  	const struct regmap_config *bq256xx_regmap_config;
289  
290  	int (*bq256xx_get_ichg)(struct bq256xx_device *bq);
291  	int (*bq256xx_get_iindpm)(struct bq256xx_device *bq);
292  	int (*bq256xx_get_vbatreg)(struct bq256xx_device *bq);
293  	int (*bq256xx_get_iterm)(struct bq256xx_device *bq);
294  	int (*bq256xx_get_iprechg)(struct bq256xx_device *bq);
295  	int (*bq256xx_get_vindpm)(struct bq256xx_device *bq);
296  
297  	int (*bq256xx_set_ichg)(struct bq256xx_device *bq, int ichg);
298  	int (*bq256xx_set_iindpm)(struct bq256xx_device *bq, int iindpm);
299  	int (*bq256xx_set_vbatreg)(struct bq256xx_device *bq, int vbatreg);
300  	int (*bq256xx_set_iterm)(struct bq256xx_device *bq, int iterm);
301  	int (*bq256xx_set_iprechg)(struct bq256xx_device *bq, int iprechg);
302  	int (*bq256xx_set_vindpm)(struct bq256xx_device *bq, int vindpm);
303  	int (*bq256xx_set_charge_type)(struct bq256xx_device *bq, int type);
304  	int (*bq256xx_set_ts_ignore)(struct bq256xx_device *bq, bool ts_ignore);
305  
306  	int bq256xx_def_ichg;
307  	int bq256xx_def_iindpm;
308  	int bq256xx_def_vbatreg;
309  	int bq256xx_def_iterm;
310  	int bq256xx_def_iprechg;
311  	int bq256xx_def_vindpm;
312  
313  	int bq256xx_max_ichg;
314  	int bq256xx_max_vbatreg;
315  
316  	bool has_usb_detect;
317  };
318  
319  static int bq256xx_watchdog_time[BQ256XX_NUM_WD_VAL] = {
320  	0, 40000, 80000, 1600000
321  };
322  
323  static const int bq25611d_vbatreg_values[] = {
324  	3494000, 3590000, 3686000, 3790000, 3894000, 3990000, 4090000, 4140000,
325  	4190000
326  };
327  
328  static const int bq25618_619_vbatreg_values[] = {
329  	3504000, 3600000, 3696000, 3800000, 3904000, 4000000, 4100000, 4150000,
330  	4200000
331  };
332  
333  static const int bq25618_619_ichg_values[] = {
334  	1290000, 1360000, 1430000, 1500000
335  };
336  
337  static enum power_supply_usb_type bq256xx_usb_type[] = {
338  	POWER_SUPPLY_USB_TYPE_SDP,
339  	POWER_SUPPLY_USB_TYPE_CDP,
340  	POWER_SUPPLY_USB_TYPE_DCP,
341  	POWER_SUPPLY_USB_TYPE_UNKNOWN,
342  	POWER_SUPPLY_USB_TYPE_ACA,
343  };
344  
bq256xx_array_parse(int array_size,int val,const int array[])345  static int bq256xx_array_parse(int array_size, int val, const int array[])
346  {
347  	int i = 0;
348  
349  	if (val < array[i])
350  		return i - 1;
351  
352  	if (val >= array[array_size - 1])
353  		return array_size - 1;
354  
355  	for (i = 1; i < array_size; i++) {
356  		if (val == array[i])
357  			return i;
358  
359  		if (val > array[i - 1] && val < array[i]) {
360  			if (val < array[i])
361  				return i - 1;
362  			else
363  				return i;
364  		}
365  	}
366  	return -EINVAL;
367  }
368  
bq256xx_usb_notifier(struct notifier_block * nb,unsigned long val,void * priv)369  static int bq256xx_usb_notifier(struct notifier_block *nb, unsigned long val,
370  				void *priv)
371  {
372  	struct bq256xx_device *bq =
373  			container_of(nb, struct bq256xx_device, usb_nb);
374  
375  	bq->usb_event = val;
376  	queue_work(system_power_efficient_wq, &bq->usb_work);
377  
378  	return NOTIFY_OK;
379  }
380  
bq256xx_usb_work(struct work_struct * data)381  static void bq256xx_usb_work(struct work_struct *data)
382  {
383  	struct bq256xx_device *bq =
384  			container_of(data, struct bq256xx_device, usb_work);
385  
386  	switch (bq->usb_event) {
387  	case USB_EVENT_ID:
388  		break;
389  	case USB_EVENT_NONE:
390  		power_supply_changed(bq->charger);
391  		break;
392  	default:
393  		dev_err(bq->dev, "Error switching to charger mode.\n");
394  		break;
395  	}
396  }
397  
398  static struct reg_default bq2560x_reg_defs[] = {
399  	{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
400  	{BQ256XX_CHARGER_CONTROL_0, 0x1a},
401  	{BQ256XX_CHARGE_CURRENT_LIMIT, 0xa2},
402  	{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x22},
403  	{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x58},
404  	{BQ256XX_CHARGER_CONTROL_1, 0x9f},
405  	{BQ256XX_CHARGER_CONTROL_2, 0x66},
406  	{BQ256XX_CHARGER_CONTROL_3, 0x4c},
407  };
408  
409  static struct reg_default bq25611d_reg_defs[] = {
410  	{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
411  	{BQ256XX_CHARGER_CONTROL_0, 0x1a},
412  	{BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
413  	{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
414  	{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
415  	{BQ256XX_CHARGER_CONTROL_1, 0x9e},
416  	{BQ256XX_CHARGER_CONTROL_2, 0xe6},
417  	{BQ256XX_CHARGER_CONTROL_3, 0x4c},
418  	{BQ256XX_PART_INFORMATION, 0x54},
419  	{BQ256XX_CHARGER_CONTROL_4, 0x75},
420  };
421  
422  static struct reg_default bq25618_619_reg_defs[] = {
423  	{BQ256XX_INPUT_CURRENT_LIMIT, 0x17},
424  	{BQ256XX_CHARGER_CONTROL_0, 0x1a},
425  	{BQ256XX_CHARGE_CURRENT_LIMIT, 0x91},
426  	{BQ256XX_PRECHG_AND_TERM_CURR_LIM, 0x12},
427  	{BQ256XX_BATTERY_VOLTAGE_LIMIT, 0x40},
428  	{BQ256XX_CHARGER_CONTROL_1, 0x9e},
429  	{BQ256XX_CHARGER_CONTROL_2, 0xe6},
430  	{BQ256XX_CHARGER_CONTROL_3, 0x4c},
431  	{BQ256XX_PART_INFORMATION, 0x2c},
432  	{BQ256XX_CHARGER_CONTROL_4, 0x75},
433  };
434  
bq256xx_get_state(struct bq256xx_device * bq,struct bq256xx_state * state)435  static int bq256xx_get_state(struct bq256xx_device *bq,
436  				struct bq256xx_state *state)
437  {
438  	unsigned int charger_status_0;
439  	unsigned int charger_status_1;
440  	int ret;
441  
442  	ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_0,
443  						&charger_status_0);
444  	if (ret)
445  		return ret;
446  
447  	ret = regmap_read(bq->regmap, BQ256XX_CHARGER_STATUS_1,
448  						&charger_status_1);
449  	if (ret)
450  		return ret;
451  
452  	state->vbus_stat = charger_status_0 & BQ256XX_VBUS_STAT_MASK;
453  	state->chrg_stat = charger_status_0 & BQ256XX_CHRG_STAT_MASK;
454  	state->online = charger_status_0 & BQ256XX_PG_STAT_MASK;
455  
456  	state->wdt_fault = charger_status_1 & BQ256XX_WDT_FAULT_MASK;
457  	state->bat_fault = charger_status_1 & BQ256XX_BAT_FAULT_MASK;
458  	state->chrg_fault = charger_status_1 & BQ256XX_CHRG_FAULT_MASK;
459  	state->ntc_fault = charger_status_1 & BQ256XX_NTC_FAULT_MASK;
460  
461  	return 0;
462  }
463  
bq256xx_set_charge_type(struct bq256xx_device * bq,int type)464  static int bq256xx_set_charge_type(struct bq256xx_device *bq, int type)
465  {
466  	int chg_config = 0;
467  
468  	switch (type) {
469  	case POWER_SUPPLY_CHARGE_TYPE_NONE:
470  		chg_config = 0x0;
471  		break;
472  	case POWER_SUPPLY_CHARGE_TYPE_TRICKLE:
473  	case POWER_SUPPLY_CHARGE_TYPE_FAST:
474  		chg_config = 0x1;
475  		break;
476  	default:
477  		return -EINVAL;
478  	}
479  
480  	return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_0,
481  				BQ256XX_CHG_CONFIG_MASK,
482  				(chg_config ? 1 : 0) << BQ256XX_CHG_CONFIG_BIT_SHIFT);
483  }
484  
bq256xx_get_ichg_curr(struct bq256xx_device * bq)485  static int bq256xx_get_ichg_curr(struct bq256xx_device *bq)
486  {
487  	unsigned int charge_current_limit;
488  	unsigned int ichg_reg_code;
489  	int ret;
490  
491  	ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
492  						&charge_current_limit);
493  	if (ret)
494  		return ret;
495  
496  	ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
497  
498  	return ichg_reg_code * BQ256XX_ICHG_STEP_uA;
499  }
500  
bq25618_619_get_ichg_curr(struct bq256xx_device * bq)501  static int bq25618_619_get_ichg_curr(struct bq256xx_device *bq)
502  {
503  	unsigned int charge_current_limit;
504  	unsigned int ichg_reg_code;
505  	int ret;
506  
507  	ret = regmap_read(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
508  						&charge_current_limit);
509  	if (ret)
510  		return ret;
511  
512  	ichg_reg_code = charge_current_limit & BQ256XX_ICHG_MASK;
513  
514  	if (ichg_reg_code < BQ25618_ICHG_THRESH)
515  		return ichg_reg_code * BQ25618_ICHG_STEP_uA;
516  
517  	return bq25618_619_ichg_values[ichg_reg_code - BQ25618_ICHG_THRESH];
518  }
519  
bq256xx_set_ichg_curr(struct bq256xx_device * bq,int ichg)520  static int bq256xx_set_ichg_curr(struct bq256xx_device *bq, int ichg)
521  {
522  	unsigned int ichg_reg_code;
523  	int ichg_max = bq->init_data.ichg_max;
524  
525  	ichg = clamp(ichg, BQ256XX_ICHG_MIN_uA, ichg_max);
526  	ichg_reg_code = ichg / BQ256XX_ICHG_STEP_uA;
527  
528  	return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
529  					BQ256XX_ICHG_MASK, ichg_reg_code);
530  }
531  
bq25618_619_set_ichg_curr(struct bq256xx_device * bq,int ichg)532  static int bq25618_619_set_ichg_curr(struct bq256xx_device *bq, int ichg)
533  {
534  	int array_size = ARRAY_SIZE(bq25618_619_ichg_values);
535  	unsigned int ichg_reg_code;
536  	int ichg_max = bq->init_data.ichg_max;
537  
538  	ichg = clamp(ichg, BQ25618_ICHG_MIN_uA, ichg_max);
539  
540  	if (ichg <= BQ25618_ICHG_THRESH_uA) {
541  		ichg_reg_code = ichg / BQ25618_ICHG_STEP_uA;
542  	} else {
543  		ichg_reg_code = bq256xx_array_parse(array_size, ichg,
544  			bq25618_619_ichg_values) + BQ25618_ICHG_THRESH;
545  	}
546  
547  	return regmap_update_bits(bq->regmap, BQ256XX_CHARGE_CURRENT_LIMIT,
548  					BQ256XX_ICHG_MASK, ichg_reg_code);
549  }
550  
bq25618_619_get_chrg_volt(struct bq256xx_device * bq)551  static int bq25618_619_get_chrg_volt(struct bq256xx_device *bq)
552  {
553  	unsigned int battery_volt_lim;
554  	unsigned int vbatreg_reg_code;
555  	int ret;
556  
557  	ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
558  							&battery_volt_lim);
559  
560  	if (ret)
561  		return ret;
562  
563  	vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
564  						BQ256XX_VBATREG_BIT_SHIFT;
565  
566  	if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
567  		return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
568  					BQ2561X_VBATREG_STEP_uV) +
569  					BQ25618_VBATREG_THRESH_uV;
570  
571  	return bq25618_619_vbatreg_values[vbatreg_reg_code];
572  }
573  
bq25611d_get_chrg_volt(struct bq256xx_device * bq)574  static int bq25611d_get_chrg_volt(struct bq256xx_device *bq)
575  {
576  	unsigned int battery_volt_lim;
577  	unsigned int vbatreg_reg_code;
578  	int ret;
579  
580  	ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
581  							&battery_volt_lim);
582  	if (ret)
583  		return ret;
584  
585  	vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
586  						BQ256XX_VBATREG_BIT_SHIFT;
587  
588  	if (vbatreg_reg_code > BQ2561X_VBATREG_THRESH)
589  		return ((vbatreg_reg_code - BQ2561X_VBATREG_THRESH) *
590  					BQ2561X_VBATREG_STEP_uV) +
591  					BQ25611D_VBATREG_THRESH_uV;
592  
593  	return bq25611d_vbatreg_values[vbatreg_reg_code];
594  }
595  
bq2560x_get_chrg_volt(struct bq256xx_device * bq)596  static int bq2560x_get_chrg_volt(struct bq256xx_device *bq)
597  {
598  	unsigned int battery_volt_lim;
599  	unsigned int vbatreg_reg_code;
600  	int ret;
601  
602  	ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
603  							&battery_volt_lim);
604  	if (ret)
605  		return ret;
606  
607  	vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
608  						BQ256XX_VBATREG_BIT_SHIFT;
609  
610  	return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
611  					+ BQ2560X_VBATREG_OFFSET_uV;
612  }
613  
bq25601d_get_chrg_volt(struct bq256xx_device * bq)614  static int bq25601d_get_chrg_volt(struct bq256xx_device *bq)
615  {
616  	unsigned int battery_volt_lim;
617  	unsigned int vbatreg_reg_code;
618  	int ret;
619  
620  	ret = regmap_read(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
621  							&battery_volt_lim);
622  	if (ret)
623  		return ret;
624  
625  	vbatreg_reg_code = (battery_volt_lim & BQ256XX_VBATREG_MASK) >>
626  						BQ256XX_VBATREG_BIT_SHIFT;
627  
628  	return (vbatreg_reg_code * BQ2560X_VBATREG_STEP_uV)
629  					+ BQ25601D_VBATREG_OFFSET_uV;
630  }
631  
bq25618_619_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)632  static int bq25618_619_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
633  {
634  	int array_size = ARRAY_SIZE(bq25618_619_vbatreg_values);
635  	unsigned int vbatreg_reg_code;
636  	int vbatreg_max = bq->init_data.vbatreg_max;
637  
638  	vbatreg = clamp(vbatreg, BQ25618_VBATREG_MIN_uV, vbatreg_max);
639  
640  	if (vbatreg > BQ25618_VBATREG_THRESH_uV)
641  		vbatreg_reg_code = ((vbatreg -
642  		BQ25618_VBATREG_THRESH_uV) /
643  		(BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
644  	else {
645  		vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
646  						bq25618_619_vbatreg_values);
647  	}
648  
649  	return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
650  				BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
651  						BQ256XX_VBATREG_BIT_SHIFT);
652  }
653  
bq25611d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)654  static int bq25611d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
655  {
656  	int array_size = ARRAY_SIZE(bq25611d_vbatreg_values);
657  	unsigned int vbatreg_reg_code;
658  	int vbatreg_max = bq->init_data.vbatreg_max;
659  
660  	vbatreg = clamp(vbatreg, BQ25611D_VBATREG_MIN_uV, vbatreg_max);
661  
662  	if (vbatreg > BQ25611D_VBATREG_THRESH_uV)
663  		vbatreg_reg_code = ((vbatreg -
664  		BQ25611D_VBATREG_THRESH_uV) /
665  		(BQ2561X_VBATREG_STEP_uV)) + BQ2561X_VBATREG_THRESH;
666  	else {
667  		vbatreg_reg_code = bq256xx_array_parse(array_size, vbatreg,
668  						bq25611d_vbatreg_values);
669  	}
670  
671  	return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
672  				BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
673  						BQ256XX_VBATREG_BIT_SHIFT);
674  }
675  
bq2560x_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)676  static int bq2560x_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
677  {
678  	unsigned int vbatreg_reg_code;
679  	int vbatreg_max = bq->init_data.vbatreg_max;
680  
681  	vbatreg = clamp(vbatreg, BQ2560X_VBATREG_MIN_uV, vbatreg_max);
682  
683  	vbatreg_reg_code = (vbatreg - BQ2560X_VBATREG_OFFSET_uV) /
684  						BQ2560X_VBATREG_STEP_uV;
685  
686  	return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
687  				BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
688  						BQ256XX_VBATREG_BIT_SHIFT);
689  }
690  
bq25601d_set_chrg_volt(struct bq256xx_device * bq,int vbatreg)691  static int bq25601d_set_chrg_volt(struct bq256xx_device *bq, int vbatreg)
692  {
693  	unsigned int vbatreg_reg_code;
694  	int vbatreg_max = bq->init_data.vbatreg_max;
695  
696  	vbatreg = clamp(vbatreg, BQ25601D_VBATREG_MIN_uV, vbatreg_max);
697  
698  	vbatreg_reg_code = (vbatreg - BQ25601D_VBATREG_OFFSET_uV) /
699  						BQ2560X_VBATREG_STEP_uV;
700  
701  	return regmap_update_bits(bq->regmap, BQ256XX_BATTERY_VOLTAGE_LIMIT,
702  				BQ256XX_VBATREG_MASK, vbatreg_reg_code <<
703  						BQ256XX_VBATREG_BIT_SHIFT);
704  }
705  
bq256xx_set_ts_ignore(struct bq256xx_device * bq,bool ts_ignore)706  static int bq256xx_set_ts_ignore(struct bq256xx_device *bq, bool ts_ignore)
707  {
708  	return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
709  				BQ256XX_TS_IGNORE, (ts_ignore ? 1 : 0) << BQ256XX_TS_IGNORE_SHIFT);
710  }
711  
bq256xx_get_prechrg_curr(struct bq256xx_device * bq)712  static int bq256xx_get_prechrg_curr(struct bq256xx_device *bq)
713  {
714  	unsigned int prechg_and_term_curr_lim;
715  	unsigned int iprechg_reg_code;
716  	int ret;
717  
718  	ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
719  						&prechg_and_term_curr_lim);
720  	if (ret)
721  		return ret;
722  
723  	iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
724  						>> BQ256XX_IPRECHG_BIT_SHIFT;
725  
726  	return (iprechg_reg_code * BQ256XX_IPRECHG_STEP_uA) +
727  						BQ256XX_IPRECHG_OFFSET_uA;
728  }
729  
bq256xx_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)730  static int bq256xx_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
731  {
732  	unsigned int iprechg_reg_code;
733  
734  	iprechg = clamp(iprechg, BQ256XX_IPRECHG_MIN_uA,
735  						BQ256XX_IPRECHG_MAX_uA);
736  
737  	iprechg_reg_code = ((iprechg - BQ256XX_IPRECHG_OFFSET_uA) /
738  			BQ256XX_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
739  
740  	return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
741  				BQ256XX_IPRECHG_MASK, iprechg_reg_code);
742  }
743  
bq25618_619_get_prechrg_curr(struct bq256xx_device * bq)744  static int bq25618_619_get_prechrg_curr(struct bq256xx_device *bq)
745  {
746  	unsigned int prechg_and_term_curr_lim;
747  	unsigned int iprechg_reg_code;
748  	int ret;
749  
750  	ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
751  						&prechg_and_term_curr_lim);
752  	if (ret)
753  		return ret;
754  
755  	iprechg_reg_code = (prechg_and_term_curr_lim & BQ256XX_IPRECHG_MASK)
756  						>> BQ256XX_IPRECHG_BIT_SHIFT;
757  
758  	return (iprechg_reg_code * BQ25618_IPRECHG_STEP_uA) +
759  						BQ25618_IPRECHG_OFFSET_uA;
760  }
761  
bq25618_619_set_prechrg_curr(struct bq256xx_device * bq,int iprechg)762  static int bq25618_619_set_prechrg_curr(struct bq256xx_device *bq, int iprechg)
763  {
764  	unsigned int iprechg_reg_code;
765  
766  	iprechg = clamp(iprechg, BQ25618_IPRECHG_MIN_uA,
767  						BQ25618_IPRECHG_MAX_uA);
768  
769  	iprechg_reg_code = ((iprechg - BQ25618_IPRECHG_OFFSET_uA) /
770  			BQ25618_IPRECHG_STEP_uA) << BQ256XX_IPRECHG_BIT_SHIFT;
771  
772  	return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
773  				BQ256XX_IPRECHG_MASK, iprechg_reg_code);
774  }
775  
bq256xx_get_term_curr(struct bq256xx_device * bq)776  static int bq256xx_get_term_curr(struct bq256xx_device *bq)
777  {
778  	unsigned int prechg_and_term_curr_lim;
779  	unsigned int iterm_reg_code;
780  	int ret;
781  
782  	ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
783  						&prechg_and_term_curr_lim);
784  	if (ret)
785  		return ret;
786  
787  	iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
788  
789  	return (iterm_reg_code * BQ256XX_ITERM_STEP_uA) +
790  						BQ256XX_ITERM_OFFSET_uA;
791  }
792  
bq256xx_set_term_curr(struct bq256xx_device * bq,int iterm)793  static int bq256xx_set_term_curr(struct bq256xx_device *bq, int iterm)
794  {
795  	unsigned int iterm_reg_code;
796  
797  	iterm = clamp(iterm, BQ256XX_ITERM_MIN_uA, BQ256XX_ITERM_MAX_uA);
798  
799  	iterm_reg_code = (iterm - BQ256XX_ITERM_OFFSET_uA) /
800  							BQ256XX_ITERM_STEP_uA;
801  
802  	return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
803  				BQ256XX_ITERM_MASK, iterm_reg_code);
804  }
805  
bq25618_619_get_term_curr(struct bq256xx_device * bq)806  static int bq25618_619_get_term_curr(struct bq256xx_device *bq)
807  {
808  	unsigned int prechg_and_term_curr_lim;
809  	unsigned int iterm_reg_code;
810  	int ret;
811  
812  	ret = regmap_read(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
813  						&prechg_and_term_curr_lim);
814  	if (ret)
815  		return ret;
816  
817  	iterm_reg_code = prechg_and_term_curr_lim & BQ256XX_ITERM_MASK;
818  
819  	return (iterm_reg_code * BQ25618_ITERM_STEP_uA) +
820  						BQ25618_ITERM_OFFSET_uA;
821  }
822  
bq25618_619_set_term_curr(struct bq256xx_device * bq,int iterm)823  static int bq25618_619_set_term_curr(struct bq256xx_device *bq, int iterm)
824  {
825  	unsigned int iterm_reg_code;
826  
827  	iterm = clamp(iterm, BQ25618_ITERM_MIN_uA, BQ25618_ITERM_MAX_uA);
828  
829  	iterm_reg_code = (iterm - BQ25618_ITERM_OFFSET_uA) /
830  							BQ25618_ITERM_STEP_uA;
831  
832  	return regmap_update_bits(bq->regmap, BQ256XX_PRECHG_AND_TERM_CURR_LIM,
833  				BQ256XX_ITERM_MASK, iterm_reg_code);
834  }
835  
bq256xx_get_input_volt_lim(struct bq256xx_device * bq)836  static int bq256xx_get_input_volt_lim(struct bq256xx_device *bq)
837  {
838  	unsigned int charger_control_2;
839  	unsigned int vindpm_reg_code;
840  	int ret;
841  
842  	ret = regmap_read(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
843  						&charger_control_2);
844  	if (ret)
845  		return ret;
846  
847  	vindpm_reg_code = charger_control_2 & BQ256XX_VINDPM_MASK;
848  
849  	return (vindpm_reg_code * BQ256XX_VINDPM_STEP_uV) +
850  						BQ256XX_VINDPM_OFFSET_uV;
851  }
852  
bq256xx_set_input_volt_lim(struct bq256xx_device * bq,int vindpm)853  static int bq256xx_set_input_volt_lim(struct bq256xx_device *bq, int vindpm)
854  {
855  	unsigned int vindpm_reg_code;
856  
857  	vindpm = clamp(vindpm, BQ256XX_VINDPM_MIN_uV, BQ256XX_VINDPM_MAX_uV);
858  
859  	vindpm_reg_code = (vindpm - BQ256XX_VINDPM_OFFSET_uV) /
860  						BQ256XX_VINDPM_STEP_uV;
861  
862  	return regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_2,
863  					BQ256XX_VINDPM_MASK, vindpm_reg_code);
864  }
865  
bq256xx_get_input_curr_lim(struct bq256xx_device * bq)866  static int bq256xx_get_input_curr_lim(struct bq256xx_device *bq)
867  {
868  	unsigned int input_current_limit;
869  	unsigned int iindpm_reg_code;
870  	int ret;
871  
872  	ret = regmap_read(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
873  						&input_current_limit);
874  	if (ret)
875  		return ret;
876  
877  	iindpm_reg_code = input_current_limit & BQ256XX_IINDPM_MASK;
878  
879  	return (iindpm_reg_code * BQ256XX_IINDPM_STEP_uA) +
880  						BQ256XX_IINDPM_OFFSET_uA;
881  }
882  
bq256xx_set_input_curr_lim(struct bq256xx_device * bq,int iindpm)883  static int bq256xx_set_input_curr_lim(struct bq256xx_device *bq, int iindpm)
884  {
885  	unsigned int iindpm_reg_code;
886  
887  	iindpm = clamp(iindpm, BQ256XX_IINDPM_MIN_uA, BQ256XX_IINDPM_MAX_uA);
888  
889  	iindpm_reg_code = (iindpm - BQ256XX_IINDPM_OFFSET_uA) /
890  							BQ256XX_IINDPM_STEP_uA;
891  
892  	return regmap_update_bits(bq->regmap, BQ256XX_INPUT_CURRENT_LIMIT,
893  					BQ256XX_IINDPM_MASK, iindpm_reg_code);
894  }
895  
bq256xx_charger_reset(void * data)896  static void bq256xx_charger_reset(void *data)
897  {
898  	struct bq256xx_device *bq = data;
899  
900  	regmap_update_bits(bq->regmap, BQ256XX_PART_INFORMATION,
901  					BQ256XX_REG_RST, BQ256XX_REG_RST);
902  
903  	if (!IS_ERR_OR_NULL(bq->usb2_phy))
904  		usb_unregister_notifier(bq->usb2_phy, &bq->usb_nb);
905  
906  	if (!IS_ERR_OR_NULL(bq->usb3_phy))
907  		usb_unregister_notifier(bq->usb3_phy, &bq->usb_nb);
908  }
909  
bq256xx_set_charger_property(struct power_supply * psy,enum power_supply_property prop,const union power_supply_propval * val)910  static int bq256xx_set_charger_property(struct power_supply *psy,
911  		enum power_supply_property prop,
912  		const union power_supply_propval *val)
913  {
914  	struct bq256xx_device *bq = power_supply_get_drvdata(psy);
915  	int ret = -EINVAL;
916  
917  	switch (prop) {
918  	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
919  		ret = bq->chip_info->bq256xx_set_iindpm(bq, val->intval);
920  		if (ret)
921  			return ret;
922  		break;
923  
924  	case POWER_SUPPLY_PROP_STATUS:
925  		break;
926  
927  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
928  		ret = bq->chip_info->bq256xx_set_vbatreg(bq, val->intval);
929  		if (ret)
930  			return ret;
931  		break;
932  
933  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
934  		ret = bq->chip_info->bq256xx_set_ichg(bq, val->intval);
935  		if (ret)
936  			return ret;
937  		break;
938  
939  	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
940  		ret = bq->chip_info->bq256xx_set_iprechg(bq, val->intval);
941  		if (ret)
942  			return ret;
943  		break;
944  
945  	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
946  		ret = bq->chip_info->bq256xx_set_iterm(bq, val->intval);
947  		if (ret)
948  			return ret;
949  		break;
950  
951  	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
952  		ret = bq->chip_info->bq256xx_set_vindpm(bq, val->intval);
953  		if (ret)
954  			return ret;
955  		break;
956  
957  	case POWER_SUPPLY_PROP_CHARGE_TYPE:
958  		ret = bq->chip_info->bq256xx_set_charge_type(bq, val->intval);
959  		if (ret)
960  			return ret;
961  		break;
962  
963  	default:
964  		break;
965  	}
966  
967  	return ret;
968  }
969  
970  
bq256xx_get_battery_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)971  static int bq256xx_get_battery_property(struct power_supply *psy,
972  				enum power_supply_property psp,
973  				union power_supply_propval *val)
974  {
975  	struct bq256xx_device *bq = power_supply_get_drvdata(psy);
976  
977  	switch (psp) {
978  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
979  		val->intval = bq->init_data.ichg_max;
980  		break;
981  
982  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
983  		val->intval = bq->init_data.vbatreg_max;
984  		break;
985  
986  	default:
987  		return -EINVAL;
988  	}
989  
990  	return 0;
991  }
992  
bq256xx_get_charger_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)993  static int bq256xx_get_charger_property(struct power_supply *psy,
994  				enum power_supply_property psp,
995  				union power_supply_propval *val)
996  {
997  	struct bq256xx_device *bq = power_supply_get_drvdata(psy);
998  	struct bq256xx_state state;
999  	int ret = 0;
1000  
1001  	mutex_lock(&bq->lock);
1002  	ret = bq256xx_get_state(bq, &state);
1003  	mutex_unlock(&bq->lock);
1004  	if (ret)
1005  		return ret;
1006  
1007  	switch (psp) {
1008  	case POWER_SUPPLY_PROP_STATUS:
1009  		if (state.vbus_stat == BQ256XX_VBUS_STAT_NO_INPUT ||
1010  		    state.vbus_stat == BQ256XX_VBUS_STAT_USB_OTG)
1011  			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
1012  		else if (state.chrg_stat == BQ256XX_CHRG_STAT_NOT_CHRGING)
1013  			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
1014  		else if (state.chrg_stat == BQ256XX_CHRG_STAT_CHRG_TERM)
1015  			val->intval = POWER_SUPPLY_STATUS_FULL;
1016  		else
1017  			val->intval = POWER_SUPPLY_STATUS_CHARGING;
1018  		break;
1019  
1020  	case POWER_SUPPLY_PROP_HEALTH:
1021  		val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
1022  		if (state.wdt_fault) {
1023  			val->intval =
1024  				POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE;
1025  		} else if (state.bat_fault) {
1026  			val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
1027  		} else {
1028  			switch (state.chrg_stat) {
1029  			case BQ256XX_CHRG_FAULT_INPUT:
1030  				val->intval =
1031  					POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
1032  				break;
1033  			case BQ256XX_CHRG_FAULT_THERM:
1034  				val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
1035  				break;
1036  			case BQ256XX_CHRG_FAULT_CST_EXPIRE:
1037  				val->intval =
1038  				POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
1039  				break;
1040  			default:
1041  				break;
1042  			}
1043  
1044  			switch (state.ntc_fault) {
1045  			case BQ256XX_NTC_FAULT_WARM:
1046  				val->intval = POWER_SUPPLY_HEALTH_WARM;
1047  				break;
1048  			case BQ256XX_NTC_FAULT_COOL:
1049  				val->intval = POWER_SUPPLY_HEALTH_COOL;
1050  				break;
1051  			case BQ256XX_NTC_FAULT_COLD:
1052  				val->intval = POWER_SUPPLY_HEALTH_COLD;
1053  				break;
1054  			case BQ256XX_NTC_FAULT_HOT:
1055  				val->intval = POWER_SUPPLY_HEALTH_HOT;
1056  				break;
1057  			default:
1058  				val->intval = POWER_SUPPLY_HEALTH_GOOD;
1059  				break;
1060  			}
1061  		}
1062  		break;
1063  
1064  	case POWER_SUPPLY_PROP_USB_TYPE:
1065  		if (bq->chip_info->has_usb_detect) {
1066  			switch (state.vbus_stat) {
1067  			case BQ256XX_VBUS_STAT_USB_SDP:
1068  				val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1069  				break;
1070  			case BQ256XX_VBUS_STAT_USB_CDP:
1071  				val->intval = POWER_SUPPLY_USB_TYPE_CDP;
1072  				break;
1073  			case BQ256XX_VBUS_STAT_USB_DCP:
1074  				val->intval = POWER_SUPPLY_USB_TYPE_DCP;
1075  				break;
1076  			case BQ256XX_VBUS_STAT_USB_OTG:
1077  				val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1078  				break;
1079  			default:
1080  				val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1081  				break;
1082  			}
1083  		} else {
1084  			switch (state.vbus_stat) {
1085  			case BQ256XX_VBUS_STAT_USB_SDP:
1086  				val->intval = POWER_SUPPLY_USB_TYPE_SDP;
1087  				break;
1088  			case BQ256XX_VBUS_STAT_USB_OTG:
1089  				val->intval = POWER_SUPPLY_USB_TYPE_ACA;
1090  				break;
1091  			default:
1092  				val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
1093  				break;
1094  			}
1095  		}
1096  		break;
1097  
1098  	case POWER_SUPPLY_PROP_CHARGE_TYPE:
1099  		switch (state.chrg_stat) {
1100  		case BQ256XX_CHRG_STAT_NOT_CHRGING:
1101  			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
1102  			break;
1103  		case BQ256XX_CHRG_STAT_PRECHRGING:
1104  			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1105  			break;
1106  		case BQ256XX_CHRG_STAT_FAST_CHRGING:
1107  			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
1108  			break;
1109  		case BQ256XX_CHRG_STAT_CHRG_TERM:
1110  			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
1111  			break;
1112  		default:
1113  			val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
1114  		}
1115  		break;
1116  
1117  	case POWER_SUPPLY_PROP_MANUFACTURER:
1118  		val->strval = BQ256XX_MANUFACTURER;
1119  		break;
1120  
1121  	case POWER_SUPPLY_PROP_MODEL_NAME:
1122  		val->strval = bq->model_name;
1123  		break;
1124  
1125  	case POWER_SUPPLY_PROP_ONLINE:
1126  		val->intval = state.online;
1127  		break;
1128  
1129  	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1130  		ret = bq->chip_info->bq256xx_get_vindpm(bq);
1131  		if (ret < 0)
1132  			return ret;
1133  		val->intval = ret;
1134  		break;
1135  
1136  	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1137  		ret = bq->chip_info->bq256xx_get_iindpm(bq);
1138  		if (ret < 0)
1139  			return ret;
1140  		val->intval = ret;
1141  		break;
1142  
1143  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1144  		ret = bq->chip_info->bq256xx_get_vbatreg(bq);
1145  		if (ret < 0)
1146  			return ret;
1147  		val->intval = ret;
1148  		break;
1149  
1150  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1151  		ret = bq->chip_info->bq256xx_get_ichg(bq);
1152  		if (ret < 0)
1153  			return ret;
1154  		val->intval = ret;
1155  		break;
1156  
1157  	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1158  		ret = bq->chip_info->bq256xx_get_iprechg(bq);
1159  		if (ret < 0)
1160  			return ret;
1161  		val->intval = ret;
1162  		break;
1163  
1164  	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1165  		ret = bq->chip_info->bq256xx_get_iterm(bq);
1166  		if (ret < 0)
1167  			return ret;
1168  		val->intval = ret;
1169  		break;
1170  
1171  	default:
1172  		return -EINVAL;
1173  	}
1174  
1175  	return ret;
1176  }
1177  
bq256xx_state_changed(struct bq256xx_device * bq,struct bq256xx_state * new_state)1178  static bool bq256xx_state_changed(struct bq256xx_device *bq,
1179  				  struct bq256xx_state *new_state)
1180  {
1181  	struct bq256xx_state old_state;
1182  
1183  	mutex_lock(&bq->lock);
1184  	old_state = bq->state;
1185  	mutex_unlock(&bq->lock);
1186  
1187  	return memcmp(&old_state, new_state, sizeof(struct bq256xx_state)) != 0;
1188  }
1189  
bq256xx_irq_handler_thread(int irq,void * private)1190  static irqreturn_t bq256xx_irq_handler_thread(int irq, void *private)
1191  {
1192  	struct bq256xx_device *bq = private;
1193  	struct bq256xx_state state;
1194  	int ret;
1195  
1196  	ret = bq256xx_get_state(bq, &state);
1197  	if (ret < 0)
1198  		goto irq_out;
1199  
1200  	if (!bq256xx_state_changed(bq, &state))
1201  		goto irq_out;
1202  
1203  	mutex_lock(&bq->lock);
1204  	bq->state = state;
1205  	mutex_unlock(&bq->lock);
1206  
1207  	power_supply_changed(bq->charger);
1208  
1209  irq_out:
1210  	return IRQ_HANDLED;
1211  }
1212  
1213  static enum power_supply_property bq256xx_power_supply_props[] = {
1214  	POWER_SUPPLY_PROP_MANUFACTURER,
1215  	POWER_SUPPLY_PROP_MODEL_NAME,
1216  	POWER_SUPPLY_PROP_STATUS,
1217  	POWER_SUPPLY_PROP_ONLINE,
1218  	POWER_SUPPLY_PROP_HEALTH,
1219  	POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
1220  	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
1221  	POWER_SUPPLY_PROP_CHARGE_TYPE,
1222  	POWER_SUPPLY_PROP_USB_TYPE,
1223  	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
1224  	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
1225  	POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
1226  	POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
1227  };
1228  
1229  static enum power_supply_property bq256xx_battery_props[] = {
1230  	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
1231  	POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
1232  };
1233  
bq256xx_property_is_writeable(struct power_supply * psy,enum power_supply_property prop)1234  static int bq256xx_property_is_writeable(struct power_supply *psy,
1235  					 enum power_supply_property prop)
1236  {
1237  	switch (prop) {
1238  	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
1239  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
1240  	case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
1241  	case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
1242  	case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
1243  	case POWER_SUPPLY_PROP_STATUS:
1244  	case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
1245  	case POWER_SUPPLY_PROP_CHARGE_TYPE:
1246  		return true;
1247  	default:
1248  		return false;
1249  	}
1250  }
1251  
1252  static const struct power_supply_desc bq256xx_power_supply_desc = {
1253  	.name = "bq256xx-charger",
1254  	.type = POWER_SUPPLY_TYPE_USB,
1255  	.usb_types = bq256xx_usb_type,
1256  	.num_usb_types = ARRAY_SIZE(bq256xx_usb_type),
1257  	.properties = bq256xx_power_supply_props,
1258  	.num_properties = ARRAY_SIZE(bq256xx_power_supply_props),
1259  	.get_property = bq256xx_get_charger_property,
1260  	.set_property = bq256xx_set_charger_property,
1261  	.property_is_writeable = bq256xx_property_is_writeable,
1262  };
1263  
1264  static struct power_supply_desc bq256xx_battery_desc = {
1265  	.name			= "bq256xx-battery",
1266  	.type			= POWER_SUPPLY_TYPE_BATTERY,
1267  	.get_property		= bq256xx_get_battery_property,
1268  	.properties		= bq256xx_battery_props,
1269  	.num_properties		= ARRAY_SIZE(bq256xx_battery_props),
1270  	.property_is_writeable	= bq256xx_property_is_writeable,
1271  };
1272  
1273  
bq256xx_is_volatile_reg(struct device * dev,unsigned int reg)1274  static bool bq256xx_is_volatile_reg(struct device *dev, unsigned int reg)
1275  {
1276  	switch (reg) {
1277  	case BQ256XX_INPUT_CURRENT_LIMIT:
1278  	case BQ256XX_CHARGER_STATUS_0...BQ256XX_CHARGER_STATUS_2:
1279  		return true;
1280  	default:
1281  		return false;
1282  	}
1283  }
1284  
1285  static const struct regmap_config bq25600_regmap_config = {
1286  	.reg_bits = 8,
1287  	.val_bits = 8,
1288  
1289  	.max_register = BQ256XX_PART_INFORMATION,
1290  	.reg_defaults	= bq2560x_reg_defs,
1291  	.num_reg_defaults = ARRAY_SIZE(bq2560x_reg_defs),
1292  	.cache_type = REGCACHE_FLAT,
1293  	.volatile_reg = bq256xx_is_volatile_reg,
1294  };
1295  
1296  static const struct regmap_config bq25611d_regmap_config = {
1297  	.reg_bits = 8,
1298  	.val_bits = 8,
1299  
1300  	.max_register = BQ256XX_CHARGER_CONTROL_4,
1301  	.reg_defaults	= bq25611d_reg_defs,
1302  	.num_reg_defaults = ARRAY_SIZE(bq25611d_reg_defs),
1303  	.cache_type = REGCACHE_FLAT,
1304  	.volatile_reg = bq256xx_is_volatile_reg,
1305  };
1306  
1307  static const struct regmap_config bq25618_619_regmap_config = {
1308  	.reg_bits = 8,
1309  	.val_bits = 8,
1310  
1311  	.max_register = BQ256XX_CHARGER_CONTROL_4,
1312  	.reg_defaults	= bq25618_619_reg_defs,
1313  	.num_reg_defaults = ARRAY_SIZE(bq25618_619_reg_defs),
1314  	.cache_type = REGCACHE_FLAT,
1315  	.volatile_reg = bq256xx_is_volatile_reg,
1316  };
1317  
1318  static const struct bq256xx_chip_info bq256xx_chip_info_tbl[] = {
1319  	[BQ25600] = {
1320  		.model_id = BQ25600,
1321  		.bq256xx_regmap_config = &bq25600_regmap_config,
1322  		.bq256xx_get_ichg = bq256xx_get_ichg_curr,
1323  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1324  		.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1325  		.bq256xx_get_iterm = bq256xx_get_term_curr,
1326  		.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1327  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1328  		.bq256xx_set_ts_ignore = NULL,
1329  
1330  		.bq256xx_set_ichg = bq256xx_set_ichg_curr,
1331  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1332  		.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1333  		.bq256xx_set_iterm = bq256xx_set_term_curr,
1334  		.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1335  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1336  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1337  
1338  		.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1339  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1340  		.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1341  		.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1342  		.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1343  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1344  
1345  		.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1346  		.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1347  
1348  		.has_usb_detect = false,
1349  	},
1350  
1351  	[BQ25600D] = {
1352  		.model_id = BQ25600D,
1353  		.bq256xx_regmap_config = &bq25600_regmap_config,
1354  		.bq256xx_get_ichg = bq256xx_get_ichg_curr,
1355  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1356  		.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1357  		.bq256xx_get_iterm = bq256xx_get_term_curr,
1358  		.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1359  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1360  
1361  		.bq256xx_set_ichg = bq256xx_set_ichg_curr,
1362  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1363  		.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1364  		.bq256xx_set_iterm = bq256xx_set_term_curr,
1365  		.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1366  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1367  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1368  		.bq256xx_set_ts_ignore = NULL,
1369  
1370  		.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1371  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1372  		.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1373  		.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1374  		.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1375  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1376  
1377  		.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1378  		.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1379  
1380  		.has_usb_detect = true,
1381  	},
1382  
1383  	[BQ25601] = {
1384  		.model_id = BQ25601,
1385  		.bq256xx_regmap_config = &bq25600_regmap_config,
1386  		.bq256xx_get_ichg = bq256xx_get_ichg_curr,
1387  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1388  		.bq256xx_get_vbatreg = bq2560x_get_chrg_volt,
1389  		.bq256xx_get_iterm = bq256xx_get_term_curr,
1390  		.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1391  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1392  
1393  		.bq256xx_set_ichg = bq256xx_set_ichg_curr,
1394  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1395  		.bq256xx_set_vbatreg = bq2560x_set_chrg_volt,
1396  		.bq256xx_set_iterm = bq256xx_set_term_curr,
1397  		.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1398  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1399  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1400  		.bq256xx_set_ts_ignore = NULL,
1401  
1402  		.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1403  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1404  		.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1405  		.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1406  		.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1407  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1408  
1409  		.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1410  		.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1411  
1412  		.has_usb_detect = false,
1413  	},
1414  
1415  	[BQ25601D] = {
1416  		.model_id = BQ25601D,
1417  		.bq256xx_regmap_config = &bq25600_regmap_config,
1418  		.bq256xx_get_ichg = bq256xx_get_ichg_curr,
1419  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1420  		.bq256xx_get_vbatreg = bq25601d_get_chrg_volt,
1421  		.bq256xx_get_iterm = bq256xx_get_term_curr,
1422  		.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1423  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1424  
1425  		.bq256xx_set_ichg = bq256xx_set_ichg_curr,
1426  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1427  		.bq256xx_set_vbatreg = bq25601d_set_chrg_volt,
1428  		.bq256xx_set_iterm = bq256xx_set_term_curr,
1429  		.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1430  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1431  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1432  		.bq256xx_set_ts_ignore = NULL,
1433  
1434  		.bq256xx_def_ichg = BQ2560X_ICHG_DEF_uA,
1435  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1436  		.bq256xx_def_vbatreg = BQ2560X_VBATREG_DEF_uV,
1437  		.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1438  		.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1439  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1440  
1441  		.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1442  		.bq256xx_max_vbatreg = BQ2560X_VBATREG_MAX_uV,
1443  
1444  		.has_usb_detect = true,
1445  	},
1446  
1447  	[BQ25611D] = {
1448  		.model_id = BQ25611D,
1449  		.bq256xx_regmap_config = &bq25611d_regmap_config,
1450  		.bq256xx_get_ichg = bq256xx_get_ichg_curr,
1451  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1452  		.bq256xx_get_vbatreg = bq25611d_get_chrg_volt,
1453  		.bq256xx_get_iterm = bq256xx_get_term_curr,
1454  		.bq256xx_get_iprechg = bq256xx_get_prechrg_curr,
1455  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1456  
1457  		.bq256xx_set_ichg = bq256xx_set_ichg_curr,
1458  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1459  		.bq256xx_set_vbatreg = bq25611d_set_chrg_volt,
1460  		.bq256xx_set_iterm = bq256xx_set_term_curr,
1461  		.bq256xx_set_iprechg = bq256xx_set_prechrg_curr,
1462  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1463  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1464  		.bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1465  
1466  		.bq256xx_def_ichg = BQ25611D_ICHG_DEF_uA,
1467  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1468  		.bq256xx_def_vbatreg = BQ25611D_VBATREG_DEF_uV,
1469  		.bq256xx_def_iterm = BQ256XX_ITERM_DEF_uA,
1470  		.bq256xx_def_iprechg = BQ256XX_IPRECHG_DEF_uA,
1471  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1472  
1473  		.bq256xx_max_ichg = BQ256XX_ICHG_MAX_uA,
1474  		.bq256xx_max_vbatreg = BQ25611D_VBATREG_MAX_uV,
1475  
1476  		.has_usb_detect = true,
1477  	},
1478  
1479  	[BQ25618] = {
1480  		.model_id = BQ25618,
1481  		.bq256xx_regmap_config = &bq25618_619_regmap_config,
1482  		.bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1483  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1484  		.bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1485  		.bq256xx_get_iterm = bq25618_619_get_term_curr,
1486  		.bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1487  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1488  
1489  		.bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1490  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1491  		.bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1492  		.bq256xx_set_iterm = bq25618_619_set_term_curr,
1493  		.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1494  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1495  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1496  		.bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1497  
1498  		.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1499  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1500  		.bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1501  		.bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1502  		.bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1503  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1504  
1505  		.bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1506  		.bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1507  
1508  		.has_usb_detect = false,
1509  	},
1510  
1511  	[BQ25619] = {
1512  		.model_id = BQ25619,
1513  		.bq256xx_regmap_config = &bq25618_619_regmap_config,
1514  		.bq256xx_get_ichg = bq25618_619_get_ichg_curr,
1515  		.bq256xx_get_iindpm = bq256xx_get_input_curr_lim,
1516  		.bq256xx_get_vbatreg = bq25618_619_get_chrg_volt,
1517  		.bq256xx_get_iterm = bq25618_619_get_term_curr,
1518  		.bq256xx_get_iprechg = bq25618_619_get_prechrg_curr,
1519  		.bq256xx_get_vindpm = bq256xx_get_input_volt_lim,
1520  
1521  		.bq256xx_set_ichg = bq25618_619_set_ichg_curr,
1522  		.bq256xx_set_iindpm = bq256xx_set_input_curr_lim,
1523  		.bq256xx_set_vbatreg = bq25618_619_set_chrg_volt,
1524  		.bq256xx_set_iterm = bq25618_619_set_term_curr,
1525  		.bq256xx_set_iprechg = bq25618_619_set_prechrg_curr,
1526  		.bq256xx_set_vindpm = bq256xx_set_input_volt_lim,
1527  		.bq256xx_set_charge_type = bq256xx_set_charge_type,
1528  		.bq256xx_set_ts_ignore = bq256xx_set_ts_ignore,
1529  
1530  		.bq256xx_def_ichg = BQ25618_ICHG_DEF_uA,
1531  		.bq256xx_def_iindpm = BQ256XX_IINDPM_DEF_uA,
1532  		.bq256xx_def_vbatreg = BQ25618_VBATREG_DEF_uV,
1533  		.bq256xx_def_iterm = BQ25618_ITERM_DEF_uA,
1534  		.bq256xx_def_iprechg = BQ25618_IPRECHG_DEF_uA,
1535  		.bq256xx_def_vindpm = BQ256XX_VINDPM_DEF_uV,
1536  
1537  		.bq256xx_max_ichg = BQ25618_ICHG_MAX_uA,
1538  		.bq256xx_max_vbatreg = BQ25618_VBATREG_MAX_uV,
1539  
1540  		.has_usb_detect = false,
1541  	},
1542  };
1543  
bq256xx_power_supply_init(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1544  static int bq256xx_power_supply_init(struct bq256xx_device *bq,
1545  		struct power_supply_config *psy_cfg, struct device *dev)
1546  {
1547  	bq->charger = devm_power_supply_register(bq->dev,
1548  						 &bq256xx_power_supply_desc,
1549  						 psy_cfg);
1550  	if (IS_ERR(bq->charger)) {
1551  		dev_err(dev, "power supply register charger failed\n");
1552  		return PTR_ERR(bq->charger);
1553  	}
1554  
1555  	bq->battery = devm_power_supply_register(bq->dev,
1556  						      &bq256xx_battery_desc,
1557  						      psy_cfg);
1558  	if (IS_ERR(bq->battery)) {
1559  		dev_err(dev, "power supply register battery failed\n");
1560  		return PTR_ERR(bq->battery);
1561  	}
1562  	return 0;
1563  }
1564  
bq256xx_hw_init(struct bq256xx_device * bq)1565  static int bq256xx_hw_init(struct bq256xx_device *bq)
1566  {
1567  	struct power_supply_battery_info *bat_info;
1568  	int wd_reg_val = BQ256XX_WATCHDOG_DIS;
1569  	int ret = 0;
1570  	int i;
1571  
1572  	for (i = 0; i < BQ256XX_NUM_WD_VAL; i++) {
1573  		if (bq->watchdog_timer == bq256xx_watchdog_time[i]) {
1574  			wd_reg_val = i;
1575  			break;
1576  		}
1577  		if (i + 1 < BQ256XX_NUM_WD_VAL &&
1578  		    bq->watchdog_timer > bq256xx_watchdog_time[i] &&
1579  		    bq->watchdog_timer < bq256xx_watchdog_time[i + 1])
1580  			wd_reg_val = i;
1581  	}
1582  	ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
1583  				 BQ256XX_WATCHDOG_MASK, wd_reg_val <<
1584  						BQ256XX_WDT_BIT_SHIFT);
1585  	if (ret)
1586  		return ret;
1587  
1588  	ret = power_supply_get_battery_info(bq->charger, &bat_info);
1589  	if (ret == -ENOMEM)
1590  		return ret;
1591  
1592  	if (ret) {
1593  		dev_warn(bq->dev, "battery info missing, default values will be applied\n");
1594  
1595  		bat_info->constant_charge_current_max_ua =
1596  				bq->chip_info->bq256xx_def_ichg;
1597  
1598  		bat_info->constant_charge_voltage_max_uv =
1599  				bq->chip_info->bq256xx_def_vbatreg;
1600  
1601  		bat_info->precharge_current_ua =
1602  				bq->chip_info->bq256xx_def_iprechg;
1603  
1604  		bat_info->charge_term_current_ua =
1605  				bq->chip_info->bq256xx_def_iterm;
1606  
1607  		bq->init_data.ichg_max =
1608  				bq->chip_info->bq256xx_max_ichg;
1609  
1610  		bq->init_data.vbatreg_max =
1611  				bq->chip_info->bq256xx_max_vbatreg;
1612  	} else {
1613  		bq->init_data.ichg_max =
1614  			bat_info->constant_charge_current_max_ua;
1615  
1616  		bq->init_data.vbatreg_max =
1617  			bat_info->constant_charge_voltage_max_uv;
1618  	}
1619  
1620  	ret = bq->chip_info->bq256xx_set_vindpm(bq, bq->init_data.vindpm);
1621  	if (ret)
1622  		return ret;
1623  
1624  	ret = bq->chip_info->bq256xx_set_iindpm(bq, bq->init_data.iindpm);
1625  	if (ret)
1626  		return ret;
1627  
1628  	ret = bq->chip_info->bq256xx_set_ichg(bq,
1629  				bq->chip_info->bq256xx_def_ichg);
1630  	if (ret)
1631  		return ret;
1632  
1633  	ret = bq->chip_info->bq256xx_set_iprechg(bq,
1634  				bat_info->precharge_current_ua);
1635  	if (ret)
1636  		return ret;
1637  
1638  	ret = bq->chip_info->bq256xx_set_vbatreg(bq,
1639  				bq->chip_info->bq256xx_def_vbatreg);
1640  	if (ret)
1641  		return ret;
1642  
1643  	ret = bq->chip_info->bq256xx_set_iterm(bq,
1644  				bat_info->charge_term_current_ua);
1645  	if (ret)
1646  		return ret;
1647  
1648  	if (bq->chip_info->bq256xx_set_ts_ignore) {
1649  		ret = bq->chip_info->bq256xx_set_ts_ignore(bq, bq->init_data.ts_ignore);
1650  		if (ret)
1651  			return ret;
1652  	}
1653  
1654  	power_supply_put_battery_info(bq->charger, bat_info);
1655  
1656  	return 0;
1657  }
1658  
bq256xx_parse_dt(struct bq256xx_device * bq,struct power_supply_config * psy_cfg,struct device * dev)1659  static int bq256xx_parse_dt(struct bq256xx_device *bq,
1660  		struct power_supply_config *psy_cfg, struct device *dev)
1661  {
1662  	int ret = 0;
1663  
1664  	psy_cfg->drv_data = bq;
1665  	psy_cfg->of_node = dev->of_node;
1666  
1667  	ret = device_property_read_u32(bq->dev, "ti,watchdog-timeout-ms",
1668  				       &bq->watchdog_timer);
1669  	if (ret)
1670  		bq->watchdog_timer = BQ256XX_WATCHDOG_DIS;
1671  
1672  	if (bq->watchdog_timer > BQ256XX_WATCHDOG_MAX ||
1673  	    bq->watchdog_timer < BQ256XX_WATCHDOG_DIS)
1674  		return -EINVAL;
1675  
1676  	ret = device_property_read_u32(bq->dev,
1677  				       "input-voltage-limit-microvolt",
1678  				       &bq->init_data.vindpm);
1679  	if (ret)
1680  		bq->init_data.vindpm = bq->chip_info->bq256xx_def_vindpm;
1681  
1682  	ret = device_property_read_u32(bq->dev,
1683  				       "input-current-limit-microamp",
1684  				       &bq->init_data.iindpm);
1685  	if (ret)
1686  		bq->init_data.iindpm = bq->chip_info->bq256xx_def_iindpm;
1687  
1688  	bq->init_data.ts_ignore = device_property_read_bool(bq->dev, "ti,no-thermistor");
1689  
1690  	return 0;
1691  }
1692  
bq256xx_probe(struct i2c_client * client)1693  static int bq256xx_probe(struct i2c_client *client)
1694  {
1695  	const struct i2c_device_id *id = i2c_client_get_device_id(client);
1696  	struct device *dev = &client->dev;
1697  	struct bq256xx_device *bq;
1698  	struct power_supply_config psy_cfg = { };
1699  
1700  	int ret;
1701  
1702  	bq = devm_kzalloc(dev, sizeof(*bq), GFP_KERNEL);
1703  	if (!bq)
1704  		return -ENOMEM;
1705  
1706  	bq->client = client;
1707  	bq->dev = dev;
1708  	bq->chip_info = &bq256xx_chip_info_tbl[id->driver_data];
1709  
1710  	mutex_init(&bq->lock);
1711  
1712  	strncpy(bq->model_name, id->name, I2C_NAME_SIZE);
1713  
1714  	bq->regmap = devm_regmap_init_i2c(client,
1715  					bq->chip_info->bq256xx_regmap_config);
1716  
1717  	if (IS_ERR(bq->regmap)) {
1718  		dev_err(dev, "Failed to allocate register map\n");
1719  		return PTR_ERR(bq->regmap);
1720  	}
1721  
1722  	i2c_set_clientdata(client, bq);
1723  
1724  	ret = bq256xx_parse_dt(bq, &psy_cfg, dev);
1725  	if (ret) {
1726  		dev_err(dev, "Failed to read device tree properties%d\n", ret);
1727  		return ret;
1728  	}
1729  
1730  	ret = devm_add_action_or_reset(dev, bq256xx_charger_reset, bq);
1731  	if (ret)
1732  		return ret;
1733  
1734  	/* OTG reporting */
1735  	bq->usb2_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2);
1736  	if (!IS_ERR_OR_NULL(bq->usb2_phy)) {
1737  		INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1738  		bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1739  		usb_register_notifier(bq->usb2_phy, &bq->usb_nb);
1740  	}
1741  
1742  	bq->usb3_phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB3);
1743  	if (!IS_ERR_OR_NULL(bq->usb3_phy)) {
1744  		INIT_WORK(&bq->usb_work, bq256xx_usb_work);
1745  		bq->usb_nb.notifier_call = bq256xx_usb_notifier;
1746  		usb_register_notifier(bq->usb3_phy, &bq->usb_nb);
1747  	}
1748  
1749  	if (client->irq) {
1750  		ret = devm_request_threaded_irq(dev, client->irq, NULL,
1751  						bq256xx_irq_handler_thread,
1752  						IRQF_TRIGGER_FALLING |
1753  						IRQF_ONESHOT,
1754  						dev_name(&client->dev), bq);
1755  		if (ret < 0) {
1756  			dev_err(dev, "get irq fail: %d\n", ret);
1757  			return ret;
1758  		}
1759  	}
1760  
1761  	ret = bq256xx_power_supply_init(bq, &psy_cfg, dev);
1762  	if (ret) {
1763  		dev_err(dev, "Failed to register power supply\n");
1764  		return ret;
1765  	}
1766  
1767  	ret = bq256xx_hw_init(bq);
1768  	if (ret) {
1769  		dev_err(dev, "Cannot initialize the chip.\n");
1770  		return ret;
1771  	}
1772  
1773  	return ret;
1774  }
1775  
1776  static const struct i2c_device_id bq256xx_i2c_ids[] = {
1777  	{ "bq25600", BQ25600 },
1778  	{ "bq25600d", BQ25600D },
1779  	{ "bq25601", BQ25601 },
1780  	{ "bq25601d", BQ25601D },
1781  	{ "bq25611d", BQ25611D },
1782  	{ "bq25618", BQ25618 },
1783  	{ "bq25619", BQ25619 },
1784  	{},
1785  };
1786  MODULE_DEVICE_TABLE(i2c, bq256xx_i2c_ids);
1787  
1788  static const struct of_device_id bq256xx_of_match[] = {
1789  	{ .compatible = "ti,bq25600", .data = (void *)BQ25600 },
1790  	{ .compatible = "ti,bq25600d", .data = (void *)BQ25600D },
1791  	{ .compatible = "ti,bq25601", .data = (void *)BQ25601 },
1792  	{ .compatible = "ti,bq25601d", .data = (void *)BQ25601D },
1793  	{ .compatible = "ti,bq25611d", .data = (void *)BQ25611D },
1794  	{ .compatible = "ti,bq25618", .data = (void *)BQ25618 },
1795  	{ .compatible = "ti,bq25619", .data = (void *)BQ25619 },
1796  	{ },
1797  };
1798  MODULE_DEVICE_TABLE(of, bq256xx_of_match);
1799  
1800  static const struct acpi_device_id bq256xx_acpi_match[] = {
1801  	{ "bq25600", BQ25600 },
1802  	{ "bq25600d", BQ25600D },
1803  	{ "bq25601", BQ25601 },
1804  	{ "bq25601d", BQ25601D },
1805  	{ "bq25611d", BQ25611D },
1806  	{ "bq25618", BQ25618 },
1807  	{ "bq25619", BQ25619 },
1808  	{},
1809  };
1810  MODULE_DEVICE_TABLE(acpi, bq256xx_acpi_match);
1811  
1812  static struct i2c_driver bq256xx_driver = {
1813  	.driver = {
1814  		.name = "bq256xx-charger",
1815  		.of_match_table = bq256xx_of_match,
1816  		.acpi_match_table = bq256xx_acpi_match,
1817  	},
1818  	.probe = bq256xx_probe,
1819  	.id_table = bq256xx_i2c_ids,
1820  };
1821  module_i2c_driver(bq256xx_driver);
1822  
1823  MODULE_AUTHOR("Ricardo Rivera-Matos <r-rivera-matos@ti.com>");
1824  MODULE_DESCRIPTION("bq256xx charger driver");
1825  MODULE_LICENSE("GPL v2");
1826