1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2008-2009 ST-Ericsson AB
6  * Low-level control of the AB3100 IC Low Dropout (LDO)
164 	err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,  in ab3100_enable_regulator()
167 		dev_warn(&reg->dev, "failed to get regid %d value\n",  in ab3100_enable_regulator()
168 			 abreg->regreg);  in ab3100_enable_regulator()
178 	err = abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,  in ab3100_enable_regulator()
181 		dev_warn(&reg->dev, "failed to set regid %d value\n",  in ab3100_enable_regulator()
182 			 abreg->regreg);  in ab3100_enable_regulator()
200 	if (abreg->regreg == AB3100_LDO_D) {  in ab3100_disable_regulator()
201 		dev_info(&reg->dev, "disabling LDO D - shut down system\n");  in ab3100_disable_regulator()
203 		return abx500_set_register_interruptible(abreg->dev, 0,  in ab3100_disable_regulator()
210 	err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,  in ab3100_disable_regulator()
213 		dev_err(&reg->dev, "unable to get register 0x%x\n",  in ab3100_disable_regulator()
214 			abreg->regreg);  in ab3100_disable_regulator()
218 	return abx500_set_register_interruptible(abreg->dev, 0, abreg->regreg,  in ab3100_disable_regulator()
228 	err = abx500_get_register_interruptible(abreg->dev, 0, abreg->regreg,  in ab3100_is_enabled_regulator()
231 		dev_err(&reg->dev, "unable to get register 0x%x\n",  in ab3100_is_enabled_regulator()
232 			abreg->regreg);  in ab3100_is_enabled_regulator()
249 	err = abx500_get_register_interruptible(abreg->dev, 0,  in ab3100_get_voltage_regulator()
250 						abreg->regreg, &regval);  in ab3100_get_voltage_regulator()
252 		dev_warn(&reg->dev,  in ab3100_get_voltage_regulator()
254 			 abreg->regreg);  in ab3100_get_voltage_regulator()
262 	if (regval >= reg->desc->n_voltages) {  in ab3100_get_voltage_regulator()
263 		dev_err(&reg->dev,  in ab3100_get_voltage_regulator()
265 			abreg->regreg);  in ab3100_get_voltage_regulator()
266 		return -EINVAL;  in ab3100_get_voltage_regulator()
269 	return reg->desc->volt_table[regval];  in ab3100_get_voltage_regulator()
279 	err = abx500_get_register_interruptible(abreg->dev, 0,  in ab3100_set_voltage_regulator_sel()
280 						abreg->regreg, &regval);  in ab3100_set_voltage_regulator_sel()
282 		dev_warn(&reg->dev,  in ab3100_set_voltage_regulator_sel()
284 			 abreg->regreg);  in ab3100_set_voltage_regulator_sel()
292 	err = abx500_set_register_interruptible(abreg->dev, 0,  in ab3100_set_voltage_regulator_sel()
293 						abreg->regreg, regval);  in ab3100_set_voltage_regulator_sel()
295 		dev_warn(&reg->dev, "failed to set regulator register %02x\n",  in ab3100_set_voltage_regulator_sel()
296 			abreg->regreg);  in ab3100_set_voltage_regulator_sel()
310 	if (abreg->regreg == AB3100_LDO_E)  in ab3100_set_suspend_voltage_regulator()
312 	else if (abreg->regreg == AB3100_BUCK)  in ab3100_set_suspend_voltage_regulator()
315 		return -EINVAL;  in ab3100_set_suspend_voltage_regulator()
320 	err = abx500_get_register_interruptible(abreg->dev, 0,  in ab3100_set_suspend_voltage_regulator()
323 		dev_warn(&reg->dev,  in ab3100_set_suspend_voltage_regulator()
333 	err = abx500_set_register_interruptible(abreg->dev, 0,  in ab3100_set_suspend_voltage_regulator()
336 		dev_warn(&reg->dev, "failed to set regulator register %02x\n",  in ab3100_set_suspend_voltage_regulator()
337 			abreg->regreg);  in ab3100_set_suspend_voltage_regulator()
349 	if (abreg->plfdata)  in ab3100_get_voltage_regulator_external()
350 		return abreg->plfdata->external_voltage;  in ab3100_get_voltage_regulator_external()
385  * voltage is defined in the board set-up if any.
509 		if (desc->id == id)  in ab3100_regulator_register()
512 	if (desc->id != id)  in ab3100_regulator_register()
513 		return -ENODEV;  in ab3100_regulator_register()
519 	 * Initialize per-regulator struct.  in ab3100_regulator_register()
525 	reg->dev = &pdev->dev;  in ab3100_regulator_register()
527 		reg->plfdata = plfdata;  in ab3100_regulator_register()
528 		config.init_data = &plfdata->reg_constraints[i];  in ab3100_regulator_register()
533 	config.dev = &pdev->dev;  in ab3100_regulator_register()
536 	rdev = devm_regulator_register(&pdev->dev, desc, &config);  in ab3100_regulator_register()
539 		dev_err(&pdev->dev,  in ab3100_regulator_register()
541 			__func__, desc->name,  in ab3100_regulator_register()
565  * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
566  * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
588 /* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
619 		err = abx500_set_register_interruptible(&pdev->dev, 0,  in ab3100_regulator_of_probe()
623 			dev_err(&pdev->dev, "regulator initialization failed with error %d\n",  in ab3100_regulator_of_probe()
644 	struct ab3100_platform_data *plfdata = dev_get_platdata(&pdev->dev);  in ab3100_regulators_probe()
645 	struct device_node *np = pdev->dev.of_node;  in ab3100_regulators_probe()
651 	err = abx500_get_register_interruptible(&pdev->dev, 0,  in ab3100_regulators_probe()
654 		dev_err(&pdev->dev, "could not read initial status of LDO_D\n");  in ab3100_regulators_probe()
658 		dev_notice(&pdev->dev,  in ab3100_regulators_probe()
661 		dev_notice(&pdev->dev,  in ab3100_regulators_probe()
665 		err = of_regulator_match(&pdev->dev, np,  in ab3100_regulators_probe()
669 			dev_err(&pdev->dev,  in ab3100_regulators_probe()
678 		err = abx500_set_register_interruptible(&pdev->dev, 0,  in ab3100_regulators_probe()
680 					plfdata->reg_initvals[i]);  in ab3100_regulators_probe()
682 			dev_err(&pdev->dev, "regulator initialization failed with error %d\n",  in ab3100_regulators_probe()
693 						desc->id);  in ab3100_regulators_probe()
703 		.name  = "ab3100-regulators",
724 MODULE_ALIAS("platform:ab3100-regulators");