1 // SPDX-License-Identifier: GPL-2.0
3 // Linear Technology LTC3589,LTC3589-1 regulator support
36 #define LTC3589_IRQSTAT_PGOOD_TIMEOUT	BIT(3)
45 #define LTC3589_OVEN_BB_OUT		BIT(3)
57 #define LTC3589_VRRCR_SW2_RAMP_MASK	GENMASK(3, 2)
107 	return regmap_update_bits(ltc3589->regmap, rdev->desc->vsel_reg + 1,  in ltc3589_set_suspend_voltage()
108 				  rdev->desc->vsel_mask, sel);  in ltc3589_set_suspend_voltage()
118 	mask = rdev->desc->apply_bit << 1;  in ltc3589_set_suspend_mode()
123 	mask |= rdev->desc->apply_bit;  in ltc3589_set_suspend_mode()
124 	bit |= rdev->desc->apply_bit;  in ltc3589_set_suspend_mode()
125 	return regmap_update_bits(ltc3589->regmap, LTC3589_VCCR, mask, bit);  in ltc3589_set_suspend_mode()
128 /* SW1, SW2, SW3, LDO2 */
179 	struct ltc3589 *ltc3589 = config->driver_data;  in ltc3589_of_parse_cb()
180 	struct regulator_desc *rdesc = &ltc3589->regulator_descs[desc->id];  in ltc3589_of_parse_cb()
185 	if (desc->id >= LTC3589_LDO3)  in ltc3589_of_parse_cb()
188 	ret = of_property_read_u32_array(np, "lltc,fb-voltage-divider", r, 2);  in ltc3589_of_parse_cb()
190 		dev_err(ltc3589->dev, "Failed to parse voltage divider: %d\n",  in ltc3589_of_parse_cb()
198 	rdesc->min_uV = ltc3589_scale(desc->min_uV, r[0], r[1]);  in ltc3589_of_parse_cb()
199 	rdesc->uV_step = ltc3589_scale(desc->uV_step, r[0], r[1]);  in ltc3589_of_parse_cb()
200 	rdesc->fixed_uV = ltc3589_scale(desc->fixed_uV, r[0], r[1]);  in ltc3589_of_parse_cb()
254 	LTC3589_LINEAR_REG(SW1, sw1, B1DTV1),
257 	LTC3589_FIXED_REG(BB_OUT, bb-out),
356 	regmap_read(ltc3589->regmap, LTC3589_IRQSTAT, &irqstat);  in ltc3589_isr()
361 			regulator_notifier_call_chain(ltc3589->regulators[i],  in ltc3589_isr()
368 			regulator_notifier_call_chain(ltc3589->regulators[i],  in ltc3589_isr()
373 	regmap_write(ltc3589->regmap, LTC3589_CLIRQ, 0);  in ltc3589_isr()
380 	struct device *dev = &client->dev;  in ltc3589_probe()
388 		return -ENOMEM;  in ltc3589_probe()
392 	ltc3589->dev = dev;  in ltc3589_probe()
394 	descs = ltc3589->regulator_descs;  in ltc3589_probe()
396 	descs[LTC3589_LDO3].fixed_uV = info->fixed_uV;  in ltc3589_probe()
397 	descs[LTC3589_LDO4].volt_table = info->volt_table;  in ltc3589_probe()
399 	ltc3589->regmap = devm_regmap_init_i2c(client, &ltc3589_regmap_config);  in ltc3589_probe()
400 	if (IS_ERR(ltc3589->regmap)) {  in ltc3589_probe()
401 		ret = PTR_ERR(ltc3589->regmap);  in ltc3589_probe()
407 		struct regulator_desc *desc = &ltc3589->regulator_descs[i];  in ltc3589_probe()
413 		ltc3589->regulators[i] = devm_regulator_register(dev, desc,  in ltc3589_probe()
415 		if (IS_ERR(ltc3589->regulators[i])) {  in ltc3589_probe()
416 			ret = PTR_ERR(ltc3589->regulators[i]);  in ltc3589_probe()
418 				desc->name, ret);  in ltc3589_probe()
423 	if (client->irq) {  in ltc3589_probe()
424 		ret = devm_request_threaded_irq(dev, client->irq, NULL,  in ltc3589_probe()
427 						client->name, ltc3589);  in ltc3589_probe()
449 	{ "ltc3589-1", (kernel_ulong_t)&ltc3589_12_info },
450 	{ "ltc3589-2", (kernel_ulong_t)&ltc3589_12_info },
457 	{ .compatible = "lltc,ltc3589-1", .data = &ltc3589_12_info },
458 	{ .compatible = "lltc,ltc3589-2", .data = &ltc3589_12_info },
475 MODULE_DESCRIPTION("Regulator driver for Linear Technology LTC3589(-1,2)");