1 // SPDX-License-Identifier: GPL-2.0
15 #include <linux/regulator/consumer.h>
69 		return regmap_read(st->regmap, addr, val);  in ltc2991_read_reg()
71 	ret = regmap_bulk_read(st->regmap, addr, &regvals, reg_len);  in ltc2991_read_reg()
109 			reg = LTC2991_CHANNEL_V_MSB(channel - 1);  in ltc2991_read_in()
113 		return -EOPNOTSUPP;  in ltc2991_read_in()
126 	/* Vx-Vy, 19.075uV/LSB */  in ltc2991_get_curr()
128 				 st->r_sense_uohm[channel]);  in ltc2991_get_curr()
144 		return -EOPNOTSUPP;  in ltc2991_read_curr()
178 		return -EOPNOTSUPP;  in ltc2991_read_temp()
193 		return -EOPNOTSUPP;  in ltc2991_read()
209 			if (st->temp_en[(channel - 1) / 2])  in ltc2991_is_visible()
213 			if (!st->r_sense_uohm[(channel - 1) / 2])  in ltc2991_is_visible()
220 			if (st->r_sense_uohm[channel])  in ltc2991_is_visible()
229 			    st->temp_en[channel])  in ltc2991_is_visible()
294 				     "failed to enable regulator\n");  in ltc2991_init()
302 			return -EINVAL;  in ltc2991_init()
305 					       "shunt-resistor-micro-ohms",  in ltc2991_init()
309 				return dev_err_probe(dev, -EINVAL,  in ltc2991_init()
312 			st->r_sense_uohm[addr] = val;  in ltc2991_init()
333 						"adi,temperature-enable");  in ltc2991_init()
335 			st->temp_en[addr] = ret;  in ltc2991_init()
356 	ret = regmap_write(st->regmap, LTC2991_V5_V8_CTRL, v5_v8_reg_data);  in ltc2991_init()
359 				     "Error: Failed to set V5-V8 CTRL reg.\n");  in ltc2991_init()
361 	ret = regmap_write(st->regmap, LTC2991_V1_V4_CTRL, v1_v4_reg_data);  in ltc2991_init()
364 				     "Error: Failed to set V1-V4 CTRL reg.\n");  in ltc2991_init()
366 	ret = regmap_write(st->regmap, LTC2991_PWM_TH_LSB_T_INT,  in ltc2991_init()
373 	return regmap_write(st->regmap, LTC2991_CH_EN_TRIGGER,  in ltc2991_init()
385 	st = devm_kzalloc(&client->dev, sizeof(*st), GFP_KERNEL);  in ltc2991_i2c_probe()
387 		return -ENOMEM;  in ltc2991_i2c_probe()
389 	st->regmap = devm_regmap_init_i2c(client, &ltc2991_regmap_config);  in ltc2991_i2c_probe()
390 	if (IS_ERR(st->regmap))  in ltc2991_i2c_probe()
391 		return PTR_ERR(st->regmap);  in ltc2991_i2c_probe()
393 	ret = ltc2991_init(st, &client->dev);  in ltc2991_i2c_probe()
397 	hwmon_dev = devm_hwmon_device_register_with_info(&client->dev,  in ltc2991_i2c_probe()
398 							 client->name, st,  in ltc2991_i2c_probe()