1 // SPDX-License-Identifier: GPL-2.0+
3  * max77976_charger.c - Driver for the Maxim MAX77976 battery charger
14 #define MAX77976_DRIVER_NAME	"max77976-charger"
20 /* --------------------------------------------------------------------------
110 /* --------------------------------------------------------------------------
120 /* --------------------------------------------------------------------------
129 	err = regmap_field_read(chg->rfield[CHG_DTLS], &regval);  in max77976_get_status()
167 	err = regmap_field_read(chg->rfield[CHG_DTLS], &regval);  in max77976_get_charge_type()
205 	err = regmap_field_read(chg->rfield[BAT_DTLS], &regval);  in max77976_get_health()
239 	err = regmap_field_read(chg->rfield[CHGIN_OK], &regval);  in max77976_get_online()
255 	err = regmap_field_read(chg->rfield[fidx], &regval);  in max77976_get_integer()
272 	return regmap_field_write(chg->rfield[fidx], regval);  in max77976_set_integer()
284 		err = max77976_get_status(chg, &val->intval);  in max77976_get_property()
287 		err = max77976_get_charge_type(chg, &val->intval);  in max77976_get_property()
290 		err = max77976_get_health(chg, &val->intval);  in max77976_get_property()
293 		err = max77976_get_online(chg, &val->intval);  in max77976_get_property()
296 		val->intval = MAX77976_CHG_CC_MAX;  in max77976_get_property()
303 					   &val->intval);  in max77976_get_property()
310 					   &val->intval);  in max77976_get_property()
313 		val->strval = max77976_model;  in max77976_get_property()
316 		val->strval = max77976_manufacturer;  in max77976_get_property()
319 		err = -EINVAL;  in max77976_get_property()
338 					   val->intval);  in max77976_set_property()
345 					   val->intval);  in max77976_set_property()
348 		err = -EINVAL;  in max77976_set_property()
388 /* --------------------------------------------------------------------------
394 	struct device *dev = &chg->client->dev;  in max77976_detect()
395 	unsigned int id, ver, rev;  in max77976_detect()  local
398 	err = regmap_read(chg->regmap, MAX77976_REG_CHIP_ID, &id);  in max77976_detect()
403 		return dev_err_probe(dev, -ENXIO, "unknown model ID 0x%02x\n", id);  in max77976_detect()
405 	err = regmap_field_read(chg->rfield[VERSION], &ver);  in max77976_detect()
407 		err = regmap_field_read(chg->rfield[REVISION], &rev);  in max77976_detect()
409 		return dev_err_probe(dev, -ENXIO, "cannot read version/revision\n");  in max77976_detect()
411 	dev_info(dev, "detected model MAX779%02x ver %u rev %u", id, ver, rev);  in max77976_detect()
418 	struct device *dev = &chg->client->dev;  in max77976_configure()
422 	err = regmap_field_write(chg->rfield[CHGPROT], 0x3);  in max77976_configure()
427 	 * Mode 5 = Charger ON, OTG OFF, buck ON, boost OFF.  in max77976_configure()
430 	err = regmap_field_write(chg->rfield[MODE], MAX77976_MODE_CHARGER_BUCK);  in max77976_configure()
442 	struct device *dev = &client->dev;  in max77976_probe()
451 		return -ENOMEM;  in max77976_probe()
455 	chg->client = client;  in max77976_probe()
457 	chg->regmap = devm_regmap_init_i2c(client, &max77976_regmap_config);  in max77976_probe()
458 	if (IS_ERR(chg->regmap))  in max77976_probe()
459 		return dev_err_probe(dev, PTR_ERR(chg->regmap),  in max77976_probe()
463 		chg->rfield[i] = devm_regmap_field_alloc(dev, chg->regmap,  in max77976_probe()
465 		if (IS_ERR(chg->rfield[i]))  in max77976_probe()
466 			return dev_err_probe(dev, PTR_ERR(chg->rfield[i]),  in max77976_probe()