1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Chrager driver for Sc89890
4 *
5 * Copyright (c) 2022 Rockchip Electronics Co., Ltd.
6 *
7 * Author: Xu Shengfei <xsf@rock-chips.com>
8 */
9 #include <linux/gpio/consumer.h>
10 #include <linux/i2c.h>
11 #include <linux/interrupt.h>
12 #include <linux/module.h>
13 #include <linux/of.h>
14 #include <linux/power_supply.h>
15 #include <linux/regmap.h>
16 #include <linux/regulator/driver.h>
17 #include <linux/types.h>
18
19 /* Module parameters. */
20 static int debug;
21 module_param_named(debug, debug, int, 0644);
22 MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
23
24 #define DBG(args...) \
25 do { \
26 if (debug) { \
27 pr_info(args); \
28 } \
29 } while (0)
30
31 #define SC89890_MANUFACTURER "SOUTHCHIP"
32 #define SC89890_IRQ "sc89890_irq"
33 #define SC89890_ID 4
34 #define SC89890_DEBUG_BUF_LEN 30
35 enum sc89890_fields {
36 F_EN_HIZ, F_EN_ILIM, F_IILIM, /* Reg00 */
37 F_BHOT, F_BCOLD, F_VINDPM_OFS, /* Reg01 */
38 F_CONV_START, F_CONV_RATE, F_BOOSTF, F_ICO_EN,
39 F_HVDCP_EN, F_MAXC_EN, F_FORCE_DPM, F_AUTO_DPDM_EN, /* Reg02 */
40 F_BAT_LOAD_EN, F_WD_RST, F_OTG_CFG, F_CHG_CFG, F_SYSVMIN,
41 F_MIN_VBAT_SEL, /* Reg03 */
42 F_PUMPX_EN, F_ICHG, /* Reg04 */
43 F_IPRECHG, F_ITERM, /* Reg05 */
44 F_VREG, F_BATLOWV, F_VRECHG, /* Reg06 */
45 F_TERM_EN, F_STAT_DIS, F_WD, F_TMR_EN, F_CHG_TMR,
46 F_JEITA_ISET, /* Reg07 */
47 F_BATCMP, F_VCLAMP, F_TREG, /* Reg08 */
48 F_FORCE_ICO, F_TMR2X_EN, F_BATFET_DIS, F_JEITA_VSET,
49 F_BATFET_DLY, F_BATFET_RST_EN, F_PUMPX_UP, F_PUMPX_DN, /* Reg09 */
50 F_BOOSTV, F_PFM_OTG_DIS, F_BOOSTI, /* Reg0A */
51 F_VBUS_STAT, F_CHG_STAT, F_PG_STAT, F_SDP_STAT, F_0B_RSVD,
52 F_VSYS_STAT, /* Reg0B */
53 F_WD_FAULT, F_BOOST_FAULT, F_CHG_FAULT, F_BAT_FAULT,
54 F_NTC_FAULT, /* Reg0C */
55 F_FORCE_VINDPM, F_VINDPM, /* Reg0D */
56 F_THERM_STAT, F_BATV, /* Reg0E */
57 F_SYSV, /* Reg0F */
58 F_TSPCT, /* Reg10 */
59 F_VBUS_GD, F_VBUSV, /* Reg11 */
60 F_ICHGR, /* Reg12 */
61 F_VDPM_STAT, F_IDPM_STAT, F_IDPM_LIM, /* Reg13 */
62 F_REG_RST, F_ICO_OPTIMIZED, F_PN, F_TS_PROFILE, F_DEV_REV, /* Reg14 */
63
64 F_MAX_FIELDS
65 };
66
67 /* initial field values, converted to register values */
68 struct sc89890_init_data {
69 u8 ichg; /* charge current */
70 u8 vreg; /* regulation voltage */
71 u8 iterm; /* termination current */
72 u8 iprechg; /* precharge current */
73 u8 sysvmin; /* minimum system voltage limit */
74 u8 boostv; /* boost regulation voltage */
75 u8 boosti; /* boost current limit */
76 u8 boostf; /* boost frequency */
77 u8 ilim_en; /* enable ILIM pin */
78 u8 treg; /* thermal regulation threshold */
79 u8 rbatcomp; /* IBAT sense resistor value */
80 u8 vclamp; /* IBAT compensation voltage limit */
81 };
82
83 struct sc89890_state {
84 u8 online;
85 u8 chrg_status;
86 u8 chrg_fault;
87 u8 vsys_status;
88 u8 boost_fault;
89 u8 bat_fault;
90 };
91
92 struct sc89890_device {
93 struct i2c_client *client;
94 struct device *dev;
95 struct power_supply *charger;
96
97 struct regulator_dev *otg_vbus_reg;
98 unsigned long usb_event;
99
100 struct regmap *rmap;
101 struct regmap_field *rmap_fields[F_MAX_FIELDS];
102
103 struct sc89890_init_data init_data;
104 struct sc89890_state state;
105
106 struct mutex lock; /* protect state data */
107 };
108
109 static const struct regmap_range sc89890_readonly_reg_ranges[] = {
110 regmap_reg_range(0x0b, 0x0c),
111 regmap_reg_range(0x0e, 0x13),
112 };
113
114 static const struct regmap_access_table sc89890_writeable_regs = {
115 .no_ranges = sc89890_readonly_reg_ranges,
116 .n_no_ranges = ARRAY_SIZE(sc89890_readonly_reg_ranges),
117 };
118
119 static const struct regmap_range sc89890_volatile_reg_ranges[] = {
120 regmap_reg_range(0x00, 0x00),
121 regmap_reg_range(0x02, 0x02),
122 regmap_reg_range(0x09, 0x09),
123 regmap_reg_range(0x0b, 0x0b),
124 regmap_reg_range(0x0c, 0x0c),
125 regmap_reg_range(0x0d, 0x14),
126 };
127
128 static const struct regmap_access_table sc89890_volatile_regs = {
129 .yes_ranges = sc89890_volatile_reg_ranges,
130 .n_yes_ranges = ARRAY_SIZE(sc89890_volatile_reg_ranges),
131 };
132
133 static const struct regmap_config sc89890_regmap_config = {
134 .reg_bits = 8,
135 .val_bits = 8,
136
137 .max_register = 0x14,
138 .cache_type = REGCACHE_RBTREE,
139
140 .wr_table = &sc89890_writeable_regs,
141 .volatile_table = &sc89890_volatile_regs,
142 };
143
144 static const struct reg_field sc89890_reg_fields[] = {
145 /* REG00 */
146 [F_EN_HIZ] = REG_FIELD(0x00, 7, 7),
147 [F_EN_ILIM] = REG_FIELD(0x00, 6, 6),
148 [F_IILIM] = REG_FIELD(0x00, 0, 5),
149 /* REG01 */
150 [F_BHOT] = REG_FIELD(0x01, 6, 7),
151 [F_BCOLD] = REG_FIELD(0x01, 5, 5),
152 [F_VINDPM_OFS] = REG_FIELD(0x01, 0, 4),
153 /* REG02 */
154 [F_CONV_START] = REG_FIELD(0x02, 7, 7),
155 [F_CONV_RATE] = REG_FIELD(0x02, 6, 6),
156 [F_BOOSTF] = REG_FIELD(0x02, 5, 5),
157 [F_ICO_EN] = REG_FIELD(0x02, 4, 4),
158 [F_HVDCP_EN] = REG_FIELD(0x02, 3, 3),
159 [F_MAXC_EN] = REG_FIELD(0x02, 2, 2),
160 [F_FORCE_DPM] = REG_FIELD(0x02, 1, 1),
161 [F_AUTO_DPDM_EN] = REG_FIELD(0x02, 0, 0),
162 /* REG03 */
163 [F_BAT_LOAD_EN] = REG_FIELD(0x03, 7, 7),
164 [F_WD_RST] = REG_FIELD(0x03, 6, 6),
165 [F_OTG_CFG] = REG_FIELD(0x03, 5, 5),
166 [F_CHG_CFG] = REG_FIELD(0x03, 4, 4),
167 [F_SYSVMIN] = REG_FIELD(0x03, 1, 3),
168 [F_MIN_VBAT_SEL] = REG_FIELD(0x03, 0, 0),
169 /* REG04 */
170 [F_PUMPX_EN] = REG_FIELD(0x04, 7, 7),
171 [F_ICHG] = REG_FIELD(0x04, 0, 6),
172 /* REG05 */
173 [F_IPRECHG] = REG_FIELD(0x05, 4, 7),
174 [F_ITERM] = REG_FIELD(0x05, 0, 3),
175 /* REG06 */
176 [F_VREG] = REG_FIELD(0x06, 2, 7),
177 [F_BATLOWV] = REG_FIELD(0x06, 1, 1),
178 [F_VRECHG] = REG_FIELD(0x06, 0, 0),
179 /* REG07 */
180 [F_TERM_EN] = REG_FIELD(0x07, 7, 7),
181 [F_STAT_DIS] = REG_FIELD(0x07, 6, 6),
182 [F_WD] = REG_FIELD(0x07, 4, 5),
183 [F_TMR_EN] = REG_FIELD(0x07, 3, 3),
184 [F_CHG_TMR] = REG_FIELD(0x07, 1, 2),
185 [F_JEITA_ISET] = REG_FIELD(0x07, 0, 0),
186 /* REG08 */
187 [F_BATCMP] = REG_FIELD(0x08, 5, 7),
188 [F_VCLAMP] = REG_FIELD(0x08, 2, 4),
189 [F_TREG] = REG_FIELD(0x08, 0, 1),
190 /* REG09 */
191 [F_FORCE_ICO] = REG_FIELD(0x09, 7, 7),
192 [F_TMR2X_EN] = REG_FIELD(0x09, 6, 6),
193 [F_BATFET_DIS] = REG_FIELD(0x09, 5, 5),
194 [F_JEITA_VSET] = REG_FIELD(0x09, 4, 4),
195 [F_BATFET_DLY] = REG_FIELD(0x09, 3, 3),
196 [F_BATFET_RST_EN] = REG_FIELD(0x09, 2, 2),
197 [F_PUMPX_UP] = REG_FIELD(0x09, 1, 1),
198 [F_PUMPX_DN] = REG_FIELD(0x09, 0, 0),
199 /* REG0A */
200 [F_BOOSTV] = REG_FIELD(0x0A, 4, 7),
201 [F_BOOSTI] = REG_FIELD(0x0A, 0, 2),
202 [F_PFM_OTG_DIS] = REG_FIELD(0x0A, 3, 3),
203 /* REG0B */
204 [F_VBUS_STAT] = REG_FIELD(0x0B, 5, 7),
205 [F_CHG_STAT] = REG_FIELD(0x0B, 3, 4),
206 [F_PG_STAT] = REG_FIELD(0x0B, 2, 2),
207 [F_SDP_STAT] = REG_FIELD(0x0B, 1, 1),
208 [F_VSYS_STAT] = REG_FIELD(0x0B, 0, 0),
209 /* REG0C */
210 [F_WD_FAULT] = REG_FIELD(0x0C, 7, 7),
211 [F_BOOST_FAULT] = REG_FIELD(0x0C, 6, 6),
212 [F_CHG_FAULT] = REG_FIELD(0x0C, 4, 5),
213 [F_BAT_FAULT] = REG_FIELD(0x0C, 3, 3),
214 [F_NTC_FAULT] = REG_FIELD(0x0C, 0, 2),
215 /* REG0D */
216 [F_FORCE_VINDPM] = REG_FIELD(0x0D, 7, 7),
217 [F_VINDPM] = REG_FIELD(0x0D, 0, 6),
218 /* REG0E */
219 [F_THERM_STAT] = REG_FIELD(0x0E, 7, 7),
220 [F_BATV] = REG_FIELD(0x0E, 0, 6),
221 /* REG0F */
222 [F_SYSV] = REG_FIELD(0x0F, 0, 6),
223 /* REG10 */
224 [F_TSPCT] = REG_FIELD(0x10, 0, 6),
225 /* REG11 */
226 [F_VBUS_GD] = REG_FIELD(0x11, 7, 7),
227 [F_VBUSV] = REG_FIELD(0x11, 0, 6),
228 /* REG12 */
229 [F_ICHGR] = REG_FIELD(0x12, 0, 6),
230 /* REG13 */
231 [F_VDPM_STAT] = REG_FIELD(0x13, 7, 7),
232 [F_IDPM_STAT] = REG_FIELD(0x13, 6, 6),
233 [F_IDPM_LIM] = REG_FIELD(0x13, 0, 5),
234 /* REG14 */
235 [F_REG_RST] = REG_FIELD(0x14, 7, 7),
236 [F_ICO_OPTIMIZED] = REG_FIELD(0x14, 6, 6),
237 [F_PN] = REG_FIELD(0x14, 3, 5),
238 [F_TS_PROFILE] = REG_FIELD(0x14, 2, 2),
239 [F_DEV_REV] = REG_FIELD(0x14, 0, 1)
240 };
241
242 enum sc89890_status {
243 STATUS_NOT_CHARGING,
244 STATUS_PRE_CHARGING,
245 STATUS_FAST_CHARGING,
246 STATUS_TERMINATION_DONE,
247 };
248
249 enum sc89890_chrg_fault {
250 CHRG_FAULT_NORMAL,
251 CHRG_FAULT_INPUT,
252 CHRG_FAULT_THERMAL_SHUTDOWN,
253 CHRG_FAULT_TIMER_EXPIRED,
254 };
255
256 /*
257 * Most of the val -> idx conversions can be computed, given the minimum,
258 * maximum and the step between values. For the rest of conversions, we use
259 * lookup tables.
260 */
261 enum sc89890_table_ids {
262 /* range tables */
263 TBL_ICHG,
264 TBL_ITERM,
265 TBL_IILIM,
266 TBL_VREG,
267 TBL_BOOSTV,
268 TBL_SYSVMIN,
269 TBL_VBATCOMP,
270 TBL_RBATCOMP,
271
272 /* lookup tables */
273 TBL_TREG,
274 TBL_BOOSTI,
275 };
276
277 /* Thermal Regulation Threshold lookup table, in degrees Celsius */
278 static const u32 sc89890_treg_tbl[] = { 60, 80, 100, 120 };
279
280 #define SC89890_TREG_TBL_SIZE ARRAY_SIZE(sc89890_treg_tbl)
281
282 /* Boost mode current limit lookup table, in uA */
283 static const u32 sc89890_boosti_tbl[] = {
284 500000, 700000, 1100000, 1300000, 1600000, 1800000, 2100000, 2400000
285 };
286
287 #define SC89890_BOOSTI_TBL_SIZE ARRAY_SIZE(sc89890_boosti_tbl)
288
289 struct sc89890_range {
290 u32 min;
291 u32 max;
292 u32 step;
293 };
294
295 struct sc89890_lookup {
296 const u32 *tbl;
297 u32 size;
298 };
299
300 static const union {
301 struct sc89890_range rt;
302 struct sc89890_lookup lt;
303 } sc89890_tables[] = {
304 /* range tables */
305 [TBL_ICHG] = { .rt = {0, 5056000, 64000} }, /* uA */
306 [TBL_ITERM] = { .rt = {64000, 1024000, 64000} }, /* uA */
307 [TBL_IILIM] = { .rt = {100000, 3250000, 50000} }, /* uA */
308 [TBL_VREG] = { .rt = {3840000, 4608000, 16000} }, /* uV */
309 [TBL_BOOSTV] = { .rt = {4550000, 5510000, 64000} }, /* uV */
310 [TBL_SYSVMIN] = { .rt = {3000000, 3700000, 100000} }, /* uV */
311 [TBL_VBATCOMP] = { .rt = {0, 224000, 32000} }, /* uV */
312 [TBL_RBATCOMP] = { .rt = {0, 140000, 20000} }, /* uOhm */
313
314 /* lookup tables */
315 [TBL_TREG] = { .lt = {sc89890_treg_tbl, SC89890_TREG_TBL_SIZE} },
316 [TBL_BOOSTI] = { .lt = {sc89890_boosti_tbl, SC89890_BOOSTI_TBL_SIZE} }
317 };
318
sc89890_field_read(struct sc89890_device * sc89890,enum sc89890_fields field_id)319 static int sc89890_field_read(struct sc89890_device *sc89890,
320 enum sc89890_fields field_id)
321 {
322 int ret;
323 int val;
324
325 ret = regmap_field_read(sc89890->rmap_fields[field_id], &val);
326 if (ret < 0)
327 return ret;
328
329 return val;
330 }
331
sc89890_field_write(struct sc89890_device * sc89890,enum sc89890_fields field_id,u8 val)332 static int sc89890_field_write(struct sc89890_device *sc89890,
333 enum sc89890_fields field_id, u8 val)
334 {
335 return regmap_field_write(sc89890->rmap_fields[field_id], val);
336 }
337
sc89890_find_idx(u32 value,enum sc89890_table_ids id)338 static u8 sc89890_find_idx(u32 value, enum sc89890_table_ids id)
339 {
340 u8 idx;
341
342 if (id >= TBL_TREG) {
343 const u32 *tbl = sc89890_tables[id].lt.tbl;
344 u32 tbl_size = sc89890_tables[id].lt.size;
345
346 for (idx = 1; idx < tbl_size && tbl[idx] <= value; idx++)
347 ;
348 } else {
349 const struct sc89890_range *rtbl = &sc89890_tables[id].rt;
350 u8 rtbl_size;
351
352 rtbl_size = (rtbl->max - rtbl->min) / rtbl->step + 1;
353
354 for (idx = 1;
355 idx < rtbl_size && (idx * rtbl->step + rtbl->min <= value);
356 idx++)
357 ;
358 }
359
360 return idx - 1;
361 }
362
sc89890_find_val(u8 idx,enum sc89890_table_ids id)363 static u32 sc89890_find_val(u8 idx, enum sc89890_table_ids id)
364 {
365 const struct sc89890_range *rtbl;
366
367 /* lookup table? */
368 if (id >= TBL_TREG)
369 return sc89890_tables[id].lt.tbl[idx];
370
371 /* range table */
372 rtbl = &sc89890_tables[id].rt;
373
374 return (rtbl->min + idx * rtbl->step);
375 }
376
sc89890_is_adc_property(enum power_supply_property psp)377 static bool sc89890_is_adc_property(enum power_supply_property psp)
378 {
379 switch (psp) {
380 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
381 case POWER_SUPPLY_PROP_CURRENT_NOW:
382 return true;
383
384 default:
385 return false;
386 }
387 }
388
sc89890_get_chip_state(struct sc89890_device * sc89890,struct sc89890_state * state)389 static int sc89890_get_chip_state(struct sc89890_device *sc89890,
390 struct sc89890_state *state)
391 {
392 int i, ret;
393
394 struct {
395 enum sc89890_fields id;
396 u8 *data;
397 } state_fields[] = {
398 {F_CHG_STAT, &state->chrg_status},
399 {F_PG_STAT, &state->online},
400 {F_VSYS_STAT, &state->vsys_status},
401 {F_BOOST_FAULT, &state->boost_fault},
402 {F_BAT_FAULT, &state->bat_fault},
403 {F_CHG_FAULT, &state->chrg_fault}
404 };
405
406 for (i = 0; i < ARRAY_SIZE(state_fields); i++) {
407 ret = sc89890_field_read(sc89890, state_fields[i].id);
408 if (ret < 0)
409 return ret;
410
411 *state_fields[i].data = ret;
412 }
413
414 DBG("SC89890: S:CHG/PG/VSYS=%d/%d/%d, F:CHG/BOOST/BAT=%d/%d/%d\n",
415 state->chrg_status, state->online, state->vsys_status,
416 state->chrg_fault, state->boost_fault, state->bat_fault);
417
418 return 0;
419 }
420
__sc89890_handle_irq(struct sc89890_device * sc89890)421 static irqreturn_t __sc89890_handle_irq(struct sc89890_device *sc89890)
422 {
423 struct sc89890_state new_state;
424 int ret;
425
426 ret = sc89890_get_chip_state(sc89890, &new_state);
427 if (ret < 0)
428 return IRQ_NONE;
429
430 if (!memcmp(&sc89890->state, &new_state, sizeof(new_state)))
431 return IRQ_NONE;
432
433 if (!new_state.online && sc89890->state.online) { /* power removed */
434 /* disable ADC */
435 ret = sc89890_field_write(sc89890, F_CONV_START, 0);
436 if (ret < 0)
437 goto error;
438 } else if (new_state.online && !sc89890->state.online) { /* power inserted */
439
440 /* enable ADC, to have control of charge current/voltage */
441 ret = sc89890_field_write(sc89890, F_CONV_START, 1);
442 if (ret < 0)
443 goto error;
444 }
445
446 sc89890->state = new_state;
447 power_supply_changed(sc89890->charger);
448
449 return IRQ_HANDLED;
450 error:
451 dev_err(sc89890->dev, "Error communicating with the chip: %pe\n",
452 ERR_PTR(ret));
453 return IRQ_HANDLED;
454 }
455
sc89890_power_supply_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)456 static int sc89890_power_supply_get_property(struct power_supply *psy,
457 enum power_supply_property psp,
458 union power_supply_propval *val)
459 {
460 struct sc89890_device *sc89890 = power_supply_get_drvdata(psy);
461 struct sc89890_state state;
462 bool do_adc_conv;
463 int ret;
464
465 mutex_lock(&sc89890->lock);
466 /* update state in case we lost an interrupt */
467 __sc89890_handle_irq(sc89890);
468 state = sc89890->state;
469 do_adc_conv = !state.online && sc89890_is_adc_property(psp);
470 if (do_adc_conv)
471 sc89890_field_write(sc89890, F_CONV_START, 1);
472 mutex_unlock(&sc89890->lock);
473
474 if (do_adc_conv)
475 regmap_field_read_poll_timeout(sc89890->rmap_fields[F_CONV_START],
476 ret, !ret, 25000, 1000000);
477
478 switch (psp) {
479 case POWER_SUPPLY_PROP_STATUS:
480 if (!state.online)
481 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
482 else if (state.chrg_status == STATUS_NOT_CHARGING)
483 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
484 else if (state.chrg_status == STATUS_PRE_CHARGING ||
485 state.chrg_status == STATUS_FAST_CHARGING)
486 val->intval = POWER_SUPPLY_STATUS_CHARGING;
487 else if (state.chrg_status == STATUS_TERMINATION_DONE)
488 val->intval = POWER_SUPPLY_STATUS_FULL;
489 else
490 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
491
492 break;
493
494 case POWER_SUPPLY_PROP_CHARGE_TYPE:
495 if (!state.online || state.chrg_status == STATUS_NOT_CHARGING ||
496 state.chrg_status == STATUS_TERMINATION_DONE)
497 val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
498 else if (state.chrg_status == STATUS_PRE_CHARGING)
499 val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD;
500 else if (state.chrg_status == STATUS_FAST_CHARGING)
501 val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
502 else /* unreachable */
503 val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
504 break;
505
506 case POWER_SUPPLY_PROP_MANUFACTURER:
507 val->strval = SC89890_MANUFACTURER;
508 break;
509
510 case POWER_SUPPLY_PROP_MODEL_NAME:
511 val->strval = "SC89890";
512 break;
513
514 case POWER_SUPPLY_PROP_ONLINE:
515 val->intval = !!state.chrg_status;
516 break;
517
518 case POWER_SUPPLY_PROP_HEALTH:
519 if (!state.chrg_fault && !state.bat_fault && !state.boost_fault)
520 val->intval = POWER_SUPPLY_HEALTH_GOOD;
521 else if (state.bat_fault)
522 val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
523 else if (state.chrg_fault == CHRG_FAULT_TIMER_EXPIRED)
524 val->intval = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
525 else if (state.chrg_fault == CHRG_FAULT_THERMAL_SHUTDOWN)
526 val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
527 else
528 val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
529 break;
530
531 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
532 val->intval = sc89890_find_val(sc89890->init_data.ichg, TBL_ICHG);
533 break;
534
535 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
536 if (!state.online) {
537 val->intval = 0;
538 break;
539 }
540
541 ret = sc89890_field_read(sc89890, F_BATV); /* read measured value */
542 if (ret < 0)
543 return ret;
544
545 /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
546 val->intval = 2304000 + ret * 20000;
547 break;
548
549 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
550 val->intval = sc89890_find_val(sc89890->init_data.vreg, TBL_VREG);
551 break;
552
553 case POWER_SUPPLY_PROP_PRECHARGE_CURRENT:
554 val->intval = sc89890_find_val(sc89890->init_data.iprechg, TBL_ITERM);
555 break;
556
557 case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT:
558 val->intval = sc89890_find_val(sc89890->init_data.iterm, TBL_ITERM);
559 break;
560
561 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
562 ret = sc89890_field_read(sc89890, F_IILIM);
563 if (ret < 0)
564 return ret;
565
566 val->intval = sc89890_find_val(ret, TBL_IILIM);
567 break;
568 case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT:
569 val->intval = 13500000; /* uV */
570 break;
571 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
572 ret = sc89890_field_read(sc89890, F_SYSV); /* read measured value */
573 if (ret < 0)
574 return ret;
575
576 /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
577 val->intval = 2304000 + ret * 20000;
578 break;
579
580 case POWER_SUPPLY_PROP_CURRENT_NOW:
581 ret = sc89890_field_read(sc89890, F_ICHGR); /* read measured value */
582 if (ret < 0)
583 return ret;
584
585 /* converted_val = ADC_val * 50mA (table 10.3.19) */
586 val->intval = ret * -50000;
587 break;
588
589 default:
590 return -EINVAL;
591 }
592
593 return 0;
594 }
595
sc89890_power_supply_set_property(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)596 static int sc89890_power_supply_set_property(struct power_supply *psy,
597 enum power_supply_property psp,
598 const union power_supply_propval *val)
599 {
600 struct sc89890_device *sc89890 = power_supply_get_drvdata(psy);
601 int index, ret;
602
603 switch (psp) {
604 case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
605 index = sc89890_find_idx(val->intval, TBL_ICHG);
606 ret = sc89890_field_write(sc89890, F_ICHG, index);
607 if (ret < 0)
608 dev_err(sc89890->dev, "set input voltage limit failed\n");
609 break;
610
611 case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
612 index = sc89890_find_idx(val->intval, TBL_IILIM);
613 ret = sc89890_field_write(sc89890, F_IILIM, index);
614 if (ret < 0)
615 dev_err(sc89890->dev, "set input current limit failed\n");
616 break;
617
618 default:
619 ret = -EINVAL;
620 }
621
622 return ret;
623 }
624
sc89890_irq_handler_thread(int irq,void * private)625 static irqreturn_t sc89890_irq_handler_thread(int irq, void *private)
626 {
627 struct sc89890_device *sc89890 = private;
628 irqreturn_t ret;
629
630 mutex_lock(&sc89890->lock);
631 ret = __sc89890_handle_irq(sc89890);
632 mutex_unlock(&sc89890->lock);
633
634 return ret;
635 }
636
sc89890_chip_reset(struct sc89890_device * sc89890)637 static int sc89890_chip_reset(struct sc89890_device *sc89890)
638 {
639 int ret;
640 int rst_check_counter = 10;
641
642 ret = sc89890_field_write(sc89890, F_REG_RST, 1);
643 if (ret < 0)
644 return ret;
645
646 do {
647 ret = sc89890_field_read(sc89890, F_REG_RST);
648 if (ret < 0)
649 return ret;
650
651 usleep_range(5, 10);
652 } while (ret == 1 && --rst_check_counter);
653
654 if (!rst_check_counter)
655 return -ETIMEDOUT;
656
657 return 0;
658 }
659
sc89890_hw_init(struct sc89890_device * sc89890)660 static int sc89890_hw_init(struct sc89890_device *sc89890)
661 {
662 int ret;
663 int i;
664
665 const struct {
666 enum sc89890_fields id;
667 u32 value;
668 } init_data[] = {
669 {F_ICHG, sc89890->init_data.ichg},
670 {F_VREG, sc89890->init_data.vreg},
671 {F_ITERM, sc89890->init_data.iterm},
672 {F_IPRECHG, sc89890->init_data.iprechg},
673 {F_SYSVMIN, sc89890->init_data.sysvmin},
674 {F_BOOSTV, sc89890->init_data.boostv},
675 {F_BOOSTI, sc89890->init_data.boosti},
676 {F_BOOSTF, sc89890->init_data.boostf},
677 {F_EN_ILIM, sc89890->init_data.ilim_en},
678 {F_TREG, sc89890->init_data.treg},
679 {F_BATCMP, sc89890->init_data.rbatcomp},
680 {F_VCLAMP, sc89890->init_data.vclamp},
681 };
682
683 ret = sc89890_chip_reset(sc89890);
684 if (ret < 0) {
685 dev_dbg(sc89890->dev, "Reset failed %d\n", ret);
686 return ret;
687 }
688
689 /* disable watchdog */
690 ret = sc89890_field_write(sc89890, F_WD, 0);
691 if (ret < 0) {
692 dev_dbg(sc89890->dev, "Disabling watchdog failed %d\n", ret);
693 return ret;
694 }
695
696 /* initialize currents/voltages and other parameters */
697 for (i = 0; i < ARRAY_SIZE(init_data); i++) {
698 ret = sc89890_field_write(sc89890, init_data[i].id,
699 init_data[i].value);
700 if (ret < 0) {
701 dev_dbg(sc89890->dev, "Writing init data failed %d\n", ret);
702 return ret;
703 }
704 }
705
706 /* Configure ADC for continuous conversions when charging */
707 ret = sc89890_field_write(sc89890, F_CONV_RATE, !!sc89890->state.online);
708 if (ret < 0) {
709 dev_err(sc89890->dev, "Config ADC failed %d\n", ret);
710 return ret;
711 }
712
713 ret = sc89890_field_write(sc89890, F_AUTO_DPDM_EN, 0);
714 if (ret < 0) {
715 dev_err(sc89890->dev, "Config F_AUTO_DPDM_EN failed %d\n", ret);
716 return ret;
717 }
718
719 ret = sc89890_field_write(sc89890, F_HVDCP_EN, 0);
720 if (ret < 0) {
721 dev_err(sc89890->dev, "Config F_HVDCP_EN failed %d\n", ret);
722 return ret;
723 }
724
725 ret = sc89890_get_chip_state(sc89890, &sc89890->state);
726 if (ret < 0) {
727 dev_err(sc89890->dev, "Get state failed %d\n", ret);
728 return ret;
729 }
730
731 return 0;
732 }
733
734 static const enum power_supply_property sc89890_power_supply_props[] = {
735 POWER_SUPPLY_PROP_MANUFACTURER,
736 POWER_SUPPLY_PROP_MODEL_NAME,
737 POWER_SUPPLY_PROP_STATUS,
738 POWER_SUPPLY_PROP_CHARGE_TYPE,
739 POWER_SUPPLY_PROP_ONLINE,
740 POWER_SUPPLY_PROP_HEALTH,
741 POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
742 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
743 POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
744 POWER_SUPPLY_PROP_PRECHARGE_CURRENT,
745 POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT,
746 POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT,
747 POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
748 POWER_SUPPLY_PROP_VOLTAGE_NOW,
749 POWER_SUPPLY_PROP_CURRENT_NOW,
750 };
751
752 static char *sc89890_charger_supplied_to[] = {
753 "usb",
754 };
755
756 static const struct power_supply_desc sc89890_power_supply_desc = {
757 .name = "sc89890-charger",
758 .type = POWER_SUPPLY_TYPE_USB,
759 .properties = sc89890_power_supply_props,
760 .num_properties = ARRAY_SIZE(sc89890_power_supply_props),
761 .set_property = sc89890_power_supply_set_property,
762 .get_property = sc89890_power_supply_get_property,
763 };
764
sc89890_power_supply_init(struct sc89890_device * sc89890)765 static int sc89890_power_supply_init(struct sc89890_device *sc89890)
766 {
767 struct power_supply_config psy_cfg = { .drv_data = sc89890, };
768
769 psy_cfg.of_node = sc89890->dev->of_node;
770 psy_cfg.supplied_to = sc89890_charger_supplied_to;
771 psy_cfg.num_supplicants = ARRAY_SIZE(sc89890_charger_supplied_to);
772
773 sc89890->charger = devm_power_supply_register(sc89890->dev,
774 &sc89890_power_supply_desc,
775 &psy_cfg);
776
777 if (PTR_ERR_OR_ZERO(sc89890->charger)) {
778 dev_err(sc89890->dev, "failed to register power supply\n");
779 return PTR_ERR(sc89890->charger);
780 }
781
782 return 0;
783 }
784
sc89890_get_chip_version(struct sc89890_device * sc89890)785 static int sc89890_get_chip_version(struct sc89890_device *sc89890)
786 {
787 int id;
788
789 id = sc89890_field_read(sc89890, F_PN);
790 if (id < 0) {
791 dev_err(sc89890->dev, "Cannot read chip ID.\n");
792 return id;
793 } else if (id != SC89890_ID) {
794 dev_err(sc89890->dev, "Unknown chip ID %d\n", id);
795 return -ENODEV;
796 }
797
798 DBG("charge IC: SC89890\n");
799
800 return 0;
801 }
802
sc89890_set_otg_vbus(struct sc89890_device * sc,bool enable)803 static void sc89890_set_otg_vbus(struct sc89890_device *sc, bool enable)
804 {
805 sc89890_field_write(sc, F_OTG_CFG, enable);
806 }
807
sc89890_otg_vbus_enable(struct regulator_dev * dev)808 static int sc89890_otg_vbus_enable(struct regulator_dev *dev)
809 {
810 struct sc89890_device *sc = rdev_get_drvdata(dev);
811
812 sc89890_set_otg_vbus(sc, true);
813
814 return 0;
815 }
816
sc89890_otg_vbus_disable(struct regulator_dev * dev)817 static int sc89890_otg_vbus_disable(struct regulator_dev *dev)
818 {
819 struct sc89890_device *sc = rdev_get_drvdata(dev);
820
821 sc89890_set_otg_vbus(sc, false);
822
823 return 0;
824 }
825
sc89890_otg_vbus_is_enabled(struct regulator_dev * dev)826 static int sc89890_otg_vbus_is_enabled(struct regulator_dev *dev)
827 {
828 struct sc89890_device *sc = rdev_get_drvdata(dev);
829 u8 val;
830
831 val = sc89890_field_read(sc, F_OTG_CFG);
832
833 return val;
834 }
835
836 static const struct regulator_ops sc89890_otg_vbus_ops = {
837 .enable = sc89890_otg_vbus_enable,
838 .disable = sc89890_otg_vbus_disable,
839 .is_enabled = sc89890_otg_vbus_is_enabled,
840 };
841
842 static const struct regulator_desc sc89890_otg_vbus_desc = {
843 .name = "otg-vbus",
844 .of_match = "otg-vbus",
845 .regulators_node = of_match_ptr("regulators"),
846 .owner = THIS_MODULE,
847 .ops = &sc89890_otg_vbus_ops,
848 .type = REGULATOR_VOLTAGE,
849 .fixed_uV = 5000000,
850 .n_voltages = 1,
851 };
852
sc89890_register_otg_vbus_regulator(struct sc89890_device * sc)853 static int sc89890_register_otg_vbus_regulator(struct sc89890_device *sc)
854 {
855 struct regulator_config config = { };
856 struct device_node *np;
857
858 np = of_get_child_by_name(sc->dev->of_node, "regulators");
859 if (!np) {
860 dev_warn(sc->dev, "cannot find regulators node\n");
861 return -ENXIO;
862 }
863
864 config.dev = sc->dev;
865 config.driver_data = sc;
866
867 sc->otg_vbus_reg = devm_regulator_register(sc->dev,
868 &sc89890_otg_vbus_desc,
869 &config);
870 if (IS_ERR(sc->otg_vbus_reg))
871 return PTR_ERR(sc->otg_vbus_reg);
872
873 return 0;
874 }
875
registers_show(struct device * dev,struct device_attribute * attr,char * buf)876 static ssize_t registers_show(struct device *dev,
877 struct device_attribute *attr,
878 char *buf)
879 {
880 struct sc89890_device *sc89890 = dev_get_drvdata(dev);
881 u8 tmpbuf[SC89890_DEBUG_BUF_LEN];
882 int idx = 0;
883 u8 addr;
884 int val;
885 int len;
886 int ret;
887
888 sc89890_field_write(sc89890, F_CONV_START, 1);
889
890 regmap_field_read_poll_timeout(sc89890->rmap_fields[F_CONV_START],
891 ret, !ret, 25000, 1000000);
892
893 for (addr = 0x0; addr <= 0x14; addr++) {
894 ret = regmap_read(sc89890->rmap, addr, &val);
895 if (ret == 0) {
896 len = snprintf(tmpbuf, SC89890_DEBUG_BUF_LEN,
897 "Reg[%.2X] = 0x%.2x\n", addr, val);
898 memcpy(&buf[idx], tmpbuf, len);
899 idx += len;
900 }
901 }
902
903 val = sc89890_find_val(sc89890->init_data.vreg, TBL_VREG);
904 pr_info("CHARGE_VOLTAGE_MAX: %d\n", val / 1000);
905
906 val = sc89890_find_val(sc89890->init_data.iprechg, TBL_ITERM);
907 pr_info("PRECHARGE_CURRENT: %d\n", val / 1000);
908
909 val = sc89890_find_val(sc89890->init_data.iterm, TBL_ITERM);
910 pr_info("CHARGE_TERM_CURRENT: %d\n", val / 1000);
911
912 ret = sc89890_field_read(sc89890, F_BATV); /* read measured value */
913 if (ret)
914 dev_err(dev, "read F_BAT error!\n");
915 else {
916 /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
917 val = 2304000 + ret * 20000;
918 pr_info("charge voltage: %d\n", val / 1000);
919 }
920
921 ret = sc89890_field_read(sc89890, F_IILIM);
922 if (ret)
923 dev_err(dev, "read F_IILIM error!\n");
924 else {
925 val = sc89890_find_val(ret, TBL_IILIM);
926 pr_info("INPUT_CURRENT_LIMIT: %d\n", val / 1000);
927 }
928 ret = sc89890_field_read(sc89890, F_SYSV); /* read measured value */
929 if (ret)
930 dev_err(dev, "read F_SYSV error!\n");
931 else {
932 /* converted_val = 2.304V + ADC_val * 20mV (table 10.3.15) */
933 val = 2304000 + ret * 20000;
934 pr_info("VOLTAGE_NOW: %d\n", val / 1000);
935 }
936 ret = sc89890_field_read(sc89890, F_ICHGR); /* read measured value */
937 if (ret)
938 dev_err(dev, "read F_ICHRG error!\n");
939 else {
940 /* converted_val = ADC_val * 50mA (table 10.3.19) */
941 val = ret * -50000;
942 pr_info("CURRENT_NOW: %d\n", val / 1000);
943 }
944 return idx;
945 }
946
registers_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)947 static ssize_t registers_store(struct device *dev,
948 struct device_attribute *attr,
949 const char *buf, size_t count)
950 {
951 struct sc89890_device *sc89890 = dev_get_drvdata(dev);
952 int ret;
953 unsigned int reg;
954 int val;
955
956 ret = sscanf(buf, "%x %x", ®, &val);
957 if (ret == 2 && reg <= 0x14)
958 regmap_write(sc89890->rmap, (unsigned char)reg, val);
959
960 return count;
961 }
962
963 static DEVICE_ATTR_RW(registers);
964
sc89890_create_device_node(struct device * dev)965 static void sc89890_create_device_node(struct device *dev)
966 {
967 device_create_file(dev, &dev_attr_registers);
968 }
969
sc89890_fw_read_u32_props(struct sc89890_device * sc89890)970 static int sc89890_fw_read_u32_props(struct sc89890_device *sc89890)
971 {
972 struct sc89890_init_data *init = &sc89890->init_data;
973 u32 property;
974 int ret;
975 int i;
976 struct {
977 char *name;
978 bool optional;
979 enum sc89890_table_ids tbl_id;
980 u8 *conv_data; /* holds converted value from given property */
981 } props[] = {
982 /* required properties */
983 {"sc,charge-current", false, TBL_ICHG, &init->ichg},
984 {"sc,battery-regulation-voltage", false, TBL_VREG, &init->vreg},
985 {"sc,termination-current", false, TBL_ITERM, &init->iterm},
986 {"sc,precharge-current", false, TBL_ITERM, &init->iprechg},
987 {"sc,minimum-sys-voltage", false, TBL_SYSVMIN, &init->sysvmin},
988 {"sc,boost-voltage", false, TBL_BOOSTV, &init->boostv},
989 {"sc,boost-max-current", false, TBL_BOOSTI, &init->boosti},
990
991 /* optional properties */
992 {"sc,thermal-regulation-threshold", true, TBL_TREG, &init->treg},
993 {"sc,ibatcomp-micro-ohms", true, TBL_RBATCOMP, &init->rbatcomp},
994 {"sc,ibatcomp-clamp-microvolt", true, TBL_VBATCOMP, &init->vclamp},
995 };
996
997 /* initialize data for optional properties */
998 init->treg = 3; /* 120 degrees Celsius */
999 init->rbatcomp = 0;
1000 init->vclamp = 0; /* IBAT compensation disabled */
1001
1002 for (i = 0; i < ARRAY_SIZE(props); i++) {
1003 ret = device_property_read_u32(sc89890->dev,
1004 props[i].name,
1005 &property);
1006 if (ret < 0) {
1007 if (props[i].optional)
1008 continue;
1009
1010 dev_err(sc89890->dev, "Unable to read property %d %s\n", ret,
1011 props[i].name);
1012
1013 return ret;
1014 }
1015
1016 *props[i].conv_data = sc89890_find_idx(property,
1017 props[i].tbl_id);
1018 }
1019
1020 return 0;
1021 }
1022
sc89890_fw_probe(struct sc89890_device * sc89890)1023 static int sc89890_fw_probe(struct sc89890_device *sc89890)
1024 {
1025 int ret;
1026 struct sc89890_init_data *init = &sc89890->init_data;
1027
1028 ret = sc89890_fw_read_u32_props(sc89890);
1029 if (ret < 0)
1030 return ret;
1031
1032 init->ilim_en = device_property_read_bool(sc89890->dev, "sc,use-ilim-pin");
1033 init->boostf = device_property_read_bool(sc89890->dev, "sc,boost-low-freq");
1034
1035 return 0;
1036 }
1037
sc89890_probe(struct i2c_client * client,const struct i2c_device_id * id)1038 static int sc89890_probe(struct i2c_client *client,
1039 const struct i2c_device_id *id)
1040 {
1041 struct device *dev = &client->dev;
1042 struct sc89890_device *sc89890;
1043 int ret;
1044 int i;
1045
1046 sc89890 = devm_kzalloc(dev, sizeof(*sc89890), GFP_KERNEL);
1047 if (!sc89890)
1048 return -ENOMEM;
1049
1050 sc89890->client = client;
1051 sc89890->dev = dev;
1052
1053 mutex_init(&sc89890->lock);
1054 sc89890->rmap = devm_regmap_init_i2c(client, &sc89890_regmap_config);
1055 if (IS_ERR(sc89890->rmap)) {
1056 dev_err(dev, "failed to allocate register map\n");
1057 return PTR_ERR(sc89890->rmap);
1058 }
1059
1060 for (i = 0; i < ARRAY_SIZE(sc89890_reg_fields); i++) {
1061 const struct reg_field *reg_fields = sc89890_reg_fields;
1062
1063 sc89890->rmap_fields[i] = devm_regmap_field_alloc(dev,
1064 sc89890->rmap,
1065 reg_fields[i]);
1066 if (IS_ERR(sc89890->rmap_fields[i])) {
1067 dev_err(dev, "cannot allocate regmap field\n");
1068 return PTR_ERR(sc89890->rmap_fields[i]);
1069 }
1070 }
1071
1072 i2c_set_clientdata(client, sc89890);
1073
1074 ret = sc89890_get_chip_version(sc89890);
1075 if (ret) {
1076 dev_err(dev, "Cannot read chip ID or unknown chip.\n");
1077 return ret;
1078 }
1079
1080 ret = sc89890_power_supply_init(sc89890);
1081 if (ret < 0) {
1082 dev_err(dev, "Failed to register power supply\n");
1083 goto irq_fail;
1084 }
1085
1086 if (!dev->platform_data) {
1087 ret = sc89890_fw_probe(sc89890);
1088 if (ret < 0) {
1089 dev_err(dev, "Cannot read device properties.\n");
1090 return ret;
1091 }
1092 } else {
1093 return -ENODEV;
1094 }
1095
1096 ret = sc89890_hw_init(sc89890);
1097 if (ret < 0) {
1098 dev_err(dev, "Cannot initialize the chip.\n");
1099 return ret;
1100 }
1101
1102
1103 if (client->irq < 0) {
1104 dev_err(dev, "No irq resource found.\n");
1105 return client->irq;
1106 }
1107
1108 ret = devm_request_threaded_irq(dev, client->irq, NULL,
1109 sc89890_irq_handler_thread,
1110 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
1111 SC89890_IRQ, sc89890);
1112 if (ret)
1113 goto irq_fail;
1114
1115 sc89890_register_otg_vbus_regulator(sc89890);
1116 sc89890_create_device_node(sc89890->dev);
1117
1118 return 0;
1119
1120 irq_fail:
1121
1122 return ret;
1123 }
1124
sc89890_remove(struct i2c_client * client)1125 static int sc89890_remove(struct i2c_client *client)
1126 {
1127 struct sc89890_device *sc89890 = i2c_get_clientdata(client);
1128
1129 /* reset all registers to default values */
1130 sc89890_chip_reset(sc89890);
1131
1132 return 0;
1133 }
1134
1135 #ifdef CONFIG_PM_SLEEP
sc89890_suspend(struct device * dev)1136 static int sc89890_suspend(struct device *dev)
1137 {
1138 struct sc89890_device *sc89890 = dev_get_drvdata(dev);
1139
1140 /*
1141 * If charger is removed, while in suspend, make sure ADC is disabled
1142 * since it consumes slightly more power.
1143 */
1144 return sc89890_field_write(sc89890, F_CONV_RATE, 0);
1145 }
1146
sc89890_resume(struct device * dev)1147 static int sc89890_resume(struct device *dev)
1148 {
1149 int ret;
1150 struct sc89890_device *sc89890 = dev_get_drvdata(dev);
1151
1152 mutex_lock(&sc89890->lock);
1153
1154 ret = sc89890_get_chip_state(sc89890, &sc89890->state);
1155 if (ret < 0)
1156 goto unlock;
1157
1158 /* Re-enable ADC only if charger is plugged in. */
1159 if (sc89890->state.online) {
1160 ret = sc89890_field_write(sc89890, F_CONV_RATE, 1);
1161 if (ret < 0)
1162 goto unlock;
1163 }
1164
1165 /* signal userspace, maybe state changed while suspended */
1166 power_supply_changed(sc89890->charger);
1167
1168 unlock:
1169 mutex_unlock(&sc89890->lock);
1170
1171 return ret;
1172 }
1173 #endif
1174
1175 static const struct dev_pm_ops sc89890_pm = {
1176 SET_SYSTEM_SLEEP_PM_OPS(sc89890_suspend, sc89890_resume)
1177 };
1178
1179 static const struct i2c_device_id sc89890_i2c_ids[] = {
1180 { "sc89890", 0 },
1181 {},
1182 };
1183 MODULE_DEVICE_TABLE(i2c, sc89890_i2c_ids);
1184
1185 static const struct of_device_id sc89890_of_match[] = {
1186 { .compatible = "sc,sc89890", },
1187 { },
1188 };
1189 MODULE_DEVICE_TABLE(of, sc89890_of_match);
1190
1191 #ifdef CONFIG_ACPI
1192 static const struct acpi_device_id sc89890_acpi_match[] = {
1193 {"SC898900", 0},
1194 {},
1195 };
1196 MODULE_DEVICE_TABLE(acpi, sc89890_acpi_match);
1197 #endif
1198
1199 static struct i2c_driver sc89890_driver = {
1200 .driver = {
1201 .name = "sc89890-charger",
1202 .of_match_table = of_match_ptr(sc89890_of_match),
1203 .acpi_match_table = ACPI_PTR(sc89890_acpi_match),
1204 .pm = &sc89890_pm,
1205 },
1206 .probe = sc89890_probe,
1207 .remove = sc89890_remove,
1208 .id_table = sc89890_i2c_ids,
1209 };
1210 module_i2c_driver(sc89890_driver);
1211
1212 MODULE_AUTHOR("xsf<xsf@rock-chips.com>");
1213 MODULE_DESCRIPTION("sc89890 charger driver");
1214 MODULE_LICENSE("GPL");
1215