1 // SPDX-License-Identifier: GPL-2.0
40 	ret = regmap_read(rdev->regmap, MAX5970_REG_STATUS1, &reg);  in max597x_uvp_ovp_check_mode()
47 			return -EOPNOTSUPP;  in max597x_uvp_ovp_check_mode()
52 		return -EOPNOTSUPP;  in max597x_uvp_ovp_check_mode()
83 		/* reg = ADC_MASK * (lim_uV / 1000000) / (data->mon_rng / 1000000) */  in max597x_set_vp()
84 		reg = ADC_MASK * lim_uV / data->mon_rng;  in max597x_set_vp()
88 	ret = regmap_write(rdev->regmap, off_h, MAX5970_VAL2REG_H(reg));  in max597x_set_vp()
92 	ret = regmap_write(rdev->regmap, off_l, MAX5970_VAL2REG_L(reg));  in max597x_set_vp()
109 		return -EINVAL;  in max597x_set_uvp()
128 		return -EINVAL;  in max597x_set_ovp()
150 	if (lim_uA != 0 && lim_uA != data->lim_uA)  in max597x_set_ocp()
151 		data->lim_uA = lim_uA;  in max597x_set_ocp()
154 		return -EINVAL;  in max597x_set_ocp()
160 		    div_u64(mul_u32_u32(data->shunt_micro_ohms, data->lim_uA),  in max597x_set_ocp()
172 		if (vthfst > data->irng) {  in max597x_set_ocp()
173 			dev_err(&rdev->dev, "Current limit out of range\n");  in max597x_set_ocp()
174 			return -EINVAL;  in max597x_set_ocp()
177 		val = div_u64(mul_u32_u32(0xFF, vthfst), data->irng);  in max597x_set_ocp()
187 	return regmap_write(rdev->regmap, reg, val);  in max597x_set_ocp()
194 	ret = regmap_read(rdev->regmap, MAX5970_REG_STATUS3, &val);  in max597x_get_status()
225 	struct max597x_regulator *data = cfg->driver_data;  in max597x_dt_parse()
229 	    of_property_read_u32(np, "shunt-resistor-micro-ohms",  in max597x_dt_parse()
230 				 &data->shunt_micro_ohms);  in max597x_dt_parse()
232 		dev_err(cfg->dev,  in max597x_dt_parse()
233 			"property 'shunt-resistor-micro-ohms' not found, err %d\n",  in max597x_dt_parse()
277 	struct max597x_regulator *d = (struct max597x_regulator *)rid->data;  in max597x_irq_handler()
280 	ret = max597x_regmap_read_clear(d->regmap, MAX5970_REG_FAULT0, &val);  in max597x_irq_handler()
285 	for (i = 0; i < d->num_switches; i++) {  in max597x_irq_handler()
286 		stat = &rid->states[i];  in max597x_irq_handler()
287 		stat->notifs = 0;  in max597x_irq_handler()
288 		stat->errors = 0;  in max597x_irq_handler()
291 	for (i = 0; i < d->num_switches; i++) {  in max597x_irq_handler()
292 		stat = &rid->states[i];  in max597x_irq_handler()
296 			stat->notifs |= REGULATOR_EVENT_UNDER_VOLTAGE;  in max597x_irq_handler()
297 			stat->errors |= REGULATOR_ERROR_UNDER_VOLTAGE;  in max597x_irq_handler()
300 			stat->notifs |= REGULATOR_EVENT_UNDER_VOLTAGE_WARN;  in max597x_irq_handler()
301 			stat->errors |= REGULATOR_ERROR_UNDER_VOLTAGE_WARN;  in max597x_irq_handler()
305 	ret = max597x_regmap_read_clear(d->regmap, MAX5970_REG_FAULT1, &val);  in max597x_irq_handler()
309 	for (i = 0; i < d->num_switches; i++) {  in max597x_irq_handler()
310 		stat = &rid->states[i];  in max597x_irq_handler()
314 			stat->notifs |= REGULATOR_EVENT_REGULATION_OUT;  in max597x_irq_handler()
315 			stat->errors |= REGULATOR_ERROR_REGULATION_OUT;  in max597x_irq_handler()
318 			stat->notifs |= REGULATOR_EVENT_OVER_VOLTAGE_WARN;  in max597x_irq_handler()
319 			stat->errors |= REGULATOR_ERROR_OVER_VOLTAGE_WARN;  in max597x_irq_handler()
323 	ret = max597x_regmap_read_clear(d->regmap, MAX5970_REG_FAULT2, &val);  in max597x_irq_handler()
327 	for (i = 0; i < d->num_switches; i++) {  in max597x_irq_handler()
328 		stat = &rid->states[i];  in max597x_irq_handler()
332 			stat->notifs |= REGULATOR_EVENT_OVER_CURRENT_WARN;  in max597x_irq_handler()
333 			stat->errors |= REGULATOR_ERROR_OVER_CURRENT_WARN;  in max597x_irq_handler()
337 	ret = regmap_read(d->regmap, MAX5970_REG_STATUS0, &val);  in max597x_irq_handler()
341 	for (i = 0; i < d->num_switches; i++) {  in max597x_irq_handler()
342 		stat = &rid->states[i];  in max597x_irq_handler()
347 			stat->notifs |=  in max597x_irq_handler()
350 			stat->errors |=  in max597x_irq_handler()
353 			/* Clear the sub-IRQ status */  in max597x_irq_handler()
354 			regulator_disable_regmap(stat->rdev);  in max597x_irq_handler()
387 		return -EINVAL;  in max597x_adc_range()
406 		.name = "max597x-irq",  in max597x_setup_irq()
418 	/* Register notifiers - can fail if IRQ is not given */  in max597x_setup_irq()
423 		if (PTR_ERR(irq_helper) == -EPROBE_DEFER)  in max597x_setup_irq()
424 			return -EPROBE_DEFER;  in max597x_setup_irq()
436 	struct max597x_data *max597x = dev_get_drvdata(pdev->dev.parent);  in max597x_regulator_probe()
442 	int num_switches = max597x->num_switches;  in max597x_regulator_probe()
447 		    devm_kzalloc(max597x->dev, sizeof(struct max597x_regulator),  in max597x_regulator_probe()
450 			return -ENOMEM;  in max597x_regulator_probe()
452 		data->num_switches = num_switches;  in max597x_regulator_probe()
453 		data->regmap = max597x->regmap;  in max597x_regulator_probe()
455 		ret = max597x_adc_range(data->regmap, i, &max597x->irng[i], &max597x->mon_rng[i]);  in max597x_regulator_probe()
459 		data->irng = max597x->irng[i];  in max597x_regulator_probe()
460 		data->mon_rng = max597x->mon_rng[i];  in max597x_regulator_probe()
462 		config.dev = max597x->dev;  in max597x_regulator_probe()
464 		config.regmap = data->regmap;  in max597x_regulator_probe()
465 		rdev = devm_regulator_register(max597x->dev,  in max597x_regulator_probe()
468 			dev_err(max597x->dev, "failed to register regulator %s\n",  in max597x_regulator_probe()
473 		max597x->shunt_micro_ohms[i] = data->shunt_micro_ohms;  in max597x_regulator_probe()
476 	if (max597x->irq) {  in max597x_regulator_probe()
478 		    max597x_setup_irq(max597x->dev, max597x->irq, rdevs, num_switches,  in max597x_regulator_probe()
481 			dev_err(max597x->dev, "IRQ setup failed");  in max597x_regulator_probe()
491 		.name = "max597x-regulator",
500 MODULE_DESCRIPTION("MAX5970_hot-swap controller driver");