1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
8 #include <linux/devm-helpers.h>
57  * struct spmi_regulator_init_data - spmi-regulator initialization data
278 /* Boost regulator current limit control register layout */
329  * struct spmi_voltage_range - regulator set point voltage mapping description
344  * (max_uV - min_uV) % step_uV == 0
345  * (set_point_min_uV - min_uV) % step_uV == 0*
346  * (set_point_max_uV - min_uV) % step_uV == 0*
347  * n_voltages = (set_point_max_uV - set_point_min_uV) / step_uV + 1
556 static DEFINE_SPMI_SET_POINTS(boost);
571 	return regmap_bulk_read(vreg->regmap, vreg->base + addr, buf, len);  in spmi_vreg_read()
577 	return regmap_bulk_write(vreg->regmap, vreg->base + addr, buf, len);  in spmi_vreg_write()
583 	return regmap_update_bits(vreg->regmap, vreg->base + addr, mask, val);  in spmi_vreg_update_bits()
590 	if (vreg->ocp_irq) {  in spmi_regulator_vs_enable()
591 		vreg->ocp_count = 0;  in spmi_regulator_vs_enable()
592 		vreg->vs_enable_time = ktime_get();  in spmi_regulator_vs_enable()
605 		return -EINVAL;  in spmi_regulator_vs_ocp()
619 	lim_min_uV = vreg->set_points->range[0].set_point_min_uV;  in spmi_regulator_select_voltage()
621 	  vreg->set_points->range[vreg->set_points->count - 1].set_point_max_uV;  in spmi_regulator_select_voltage()
627 		dev_err(vreg->dev,  in spmi_regulator_select_voltage()
630 		return -EINVAL;  in spmi_regulator_select_voltage()
634 	for (i = vreg->set_points->count - 1; i > 0; i--) {  in spmi_regulator_select_voltage()
635 		range_max_uV = vreg->set_points->range[i - 1].set_point_max_uV;  in spmi_regulator_select_voltage()
641 	range = &vreg->set_points->range[range_id];  in spmi_regulator_select_voltage()
647 	voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);  in spmi_regulator_select_voltage()
648 	uV = voltage_sel * range->step_uV + range->min_uV;  in spmi_regulator_select_voltage()
651 		dev_err(vreg->dev,  in spmi_regulator_select_voltage()
655 		return -EINVAL;  in spmi_regulator_select_voltage()
660 		selector += vreg->set_points->range[i].n_voltages;  in spmi_regulator_select_voltage()
661 	selector += (uV - range->set_point_min_uV) / range->step_uV;  in spmi_regulator_select_voltage()
673 	range = vreg->set_points->range;  in spmi_sw_selector_to_hw()
674 	end = range + vreg->set_points->count;  in spmi_sw_selector_to_hw()
677 		if (selector < range->n_voltages) {  in spmi_sw_selector_to_hw()
682 			offset = range->set_point_min_uV - range->min_uV;  in spmi_sw_selector_to_hw()
683 			offset /= range->step_uV;  in spmi_sw_selector_to_hw()
685 			*range_sel = range->range_sel;  in spmi_sw_selector_to_hw()
689 		selector -= range->n_voltages;  in spmi_sw_selector_to_hw()
692 	return -EINVAL;  in spmi_sw_selector_to_hw()
700 	const struct spmi_voltage_range *r = vreg->set_points->range;  in spmi_hw_selector_to_sw()
701 	const struct spmi_voltage_range *end = r + vreg->set_points->count;  in spmi_hw_selector_to_sw()
704 		if (r == range && range->n_voltages) {  in spmi_hw_selector_to_sw()
711 			offset = range->set_point_min_uV - range->min_uV;  in spmi_hw_selector_to_sw()
712 			offset /= range->step_uV;  in spmi_hw_selector_to_sw()
714 				return -EINVAL;  in spmi_hw_selector_to_sw()
716 			max_hw_sel = range->set_point_max_uV - range->min_uV;  in spmi_hw_selector_to_sw()
717 			max_hw_sel /= range->step_uV;  in spmi_hw_selector_to_sw()
719 				return -EINVAL;  in spmi_hw_selector_to_sw()
721 			return sw_sel + hw_sel - offset;  in spmi_hw_selector_to_sw()
723 		sw_sel += r->n_voltages;  in spmi_hw_selector_to_sw()
726 	return -EINVAL;  in spmi_hw_selector_to_sw()
735 	range = vreg->set_points->range;  in spmi_regulator_find_range()
736 	end = range + vreg->set_points->count;  in spmi_regulator_find_range()
741 		if (range->range_sel == range_sel)  in spmi_regulator_find_range()
758 	if (uV < range->min_uV && max_uV >= range->min_uV)  in spmi_regulator_select_voltage_same_range()
759 		uV = range->min_uV;  in spmi_regulator_select_voltage_same_range()
761 	if (uV < range->min_uV || uV > range->max_uV) {  in spmi_regulator_select_voltage_same_range()
770 	uV = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);  in spmi_regulator_select_voltage_same_range()
771 	uV = uV * range->step_uV + range->min_uV;  in spmi_regulator_select_voltage_same_range()
782 	for (i = 0; i < vreg->set_points->count; i++) {  in spmi_regulator_select_voltage_same_range()
783 		if (uV >= vreg->set_points->range[i].set_point_min_uV  in spmi_regulator_select_voltage_same_range()
784 		    && uV <= vreg->set_points->range[i].set_point_max_uV) {  in spmi_regulator_select_voltage_same_range()
786 			    (uV - vreg->set_points->range[i].set_point_min_uV)  in spmi_regulator_select_voltage_same_range()
787 				/ vreg->set_points->range[i].step_uV;  in spmi_regulator_select_voltage_same_range()
791 		selector += vreg->set_points->range[i].n_voltages;  in spmi_regulator_select_voltage_same_range()
794 	if (selector >= vreg->set_points->n_voltages)  in spmi_regulator_select_voltage_same_range()
855 	diff_uV = abs(spmi_regulator_common_list_voltage(rdev, new_selector) -  in spmi_regulator_set_voltage_time_sel()
858 	return DIV_ROUND_UP(diff_uV, vreg->slew_rate);  in spmi_regulator_set_voltage_time_sel()
871 		return -EINVAL;  in spmi_regulator_common_get_voltage()
886 	range = vreg->set_points->range;  in spmi_regulator_ftsmps426_get_voltage()
888 	return (uV - range->set_point_min_uV) / range->step_uV;  in spmi_regulator_ftsmps426_get_voltage()
940 	 * In case of range 1: voltage_sel is a 5 bit value, bits[7-5] set to  in spmi_regulator_ult_lo_smps_set_voltage()
960 		return -EINVAL;  in spmi_regulator_ult_lo_smps_get_voltage()
962 	if (range->range_sel == 1)  in spmi_regulator_ult_lo_smps_get_voltage()
975 	if (selector >= vreg->set_points->n_voltages)  in spmi_regulator_common_list_voltage()
978 	for (i = 0; i < vreg->set_points->count; i++) {  in spmi_regulator_common_list_voltage()
979 		if (selector < vreg->set_points->range[i].n_voltages) {  in spmi_regulator_common_list_voltage()
980 			uV = selector * vreg->set_points->range[i].step_uV  in spmi_regulator_common_list_voltage()
981 				+ vreg->set_points->range[i].set_point_min_uV;  in spmi_regulator_common_list_voltage()
985 		selector -= vreg->set_points->range[i].n_voltages;  in spmi_regulator_common_list_voltage()
1093 		return -EINVAL;  in spmi_regulator_ftsmps426_set_mode()
1105 	if (load_uA >= vreg->hpm_min_load)  in spmi_regulator_common_set_load()
1134 	enum spmi_regulator_logical_type type = vreg->logical_type;  in spmi_regulator_set_ilim()
1147 		return -EINVAL;  in spmi_regulator_set_ilim()
1149 	reg = (ilim_uA - 1) / 500;  in spmi_regulator_set_ilim()
1162 	vreg->vs_enable_time = ktime_get();  in spmi_regulator_vs_clear_ocp()
1187 						vreg->vs_enable_time);  in spmi_regulator_vs_ocp_isr()
1195 		vreg->ocp_count = 0;  in spmi_regulator_vs_ocp_isr()
1200 	vreg->ocp_count++;  in spmi_regulator_vs_ocp_isr()
1202 	if (vreg->ocp_count == 1) {  in spmi_regulator_vs_ocp_isr()
1205 	} else if (vreg->ocp_count <= vreg->ocp_max_retries) {  in spmi_regulator_vs_ocp_isr()
1207 		schedule_delayed_work(&vreg->ocp_work,  in spmi_regulator_vs_ocp_isr()
1208 			msecs_to_jiffies(vreg->ocp_retry_delay_ms) + 1);  in spmi_regulator_vs_ocp_isr()
1210 		dev_err(vreg->dev,  in spmi_regulator_vs_ocp_isr()
1212 			vreg->ocp_count);  in spmi_regulator_vs_ocp_isr()
1270 		avs_ctl |= ((pmic_sts - 4) << 10);  in spmi_saw_set_vdd()
1289 		dev_dbg(&rdev->dev, "range_sel = %02X voltage_sel = %02X", \  in spmi_regulator_saw_set_voltage()
1291 		return -EINVAL;  in spmi_regulator_saw_set_voltage()
1461 	SPMI_VREG(BUCK,  GP_CTL,   0, INF, SMPS,   smps,   smps,   100000),
1462 	SPMI_VREG(BUCK,  HFS430,   0, INF, HFS430, hfs430, hfs430,  10000),
1513 	SPMI_VREG(BOOST, 5V_BOOST, 0, INF, BOOST,  boost,  boost,       0),
1517 	SPMI_VREG(BOOST_BYP, BB_2A, 0, INF, BOOST_BYP, boost, boost_byp, 0),
1543 	struct spmi_voltage_range *range = points->range;  in spmi_calculate_num_voltages()
1545 	for (; range < points->range + points->count; range++) {  in spmi_calculate_num_voltages()
1547 		if (range->set_point_max_uV) {  in spmi_calculate_num_voltages()
1548 			n = range->set_point_max_uV - range->set_point_min_uV;  in spmi_calculate_num_voltages()
1549 			n = (n / range->step_uV) + 1;  in spmi_calculate_num_voltages()
1551 		range->n_voltages = n;  in spmi_calculate_num_voltages()
1552 		points->n_voltages += n;  in spmi_calculate_num_voltages()
1561 	u8 version[SPMI_COMMON_REG_SUBTYPE - SPMI_COMMON_REG_DIG_MAJOR_REV + 1];  in spmi_regulator_match()
1567 		dev_dbg(vreg->dev, "could not read version registers\n");  in spmi_regulator_match()
1571 					- SPMI_COMMON_REG_DIG_MAJOR_REV];  in spmi_regulator_match()
1574 		type		= version[SPMI_COMMON_REG_TYPE -  in spmi_regulator_match()
1576 		subtype		= version[SPMI_COMMON_REG_SUBTYPE -  in spmi_regulator_match()
1585 		if (mapping->type == type && mapping->subtype == subtype  in spmi_regulator_match()
1586 		    && mapping->revision_min <= dig_major_rev  in spmi_regulator_match()
1587 		    && mapping->revision_max >= dig_major_rev)  in spmi_regulator_match()
1591 	dev_err(vreg->dev,  in spmi_regulator_match()
1593 		vreg->desc.name, type, subtype, dig_major_rev);  in spmi_regulator_match()
1595 	return -ENODEV;  in spmi_regulator_match()
1598 	vreg->logical_type	= mapping->logical_type;  in spmi_regulator_match()
1599 	vreg->set_points	= mapping->set_points;  in spmi_regulator_match()
1600 	vreg->hpm_min_load	= mapping->hpm_min_load;  in spmi_regulator_match()
1601 	vreg->desc.ops		= mapping->ops;  in spmi_regulator_match()
1603 	if (mapping->set_points) {  in spmi_regulator_match()
1604 		if (!mapping->set_points->n_voltages)  in spmi_regulator_match()
1605 			spmi_calculate_num_voltages(mapping->set_points);  in spmi_regulator_match()
1606 		vreg->desc.n_voltages = mapping->set_points->n_voltages;  in spmi_regulator_match()
1621 		dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);  in spmi_regulator_init_slew_rate()
1627 		return -EINVAL;  in spmi_regulator_init_slew_rate()
1629 	switch (vreg->logical_type) {  in spmi_regulator_init_slew_rate()
1645 	slew_rate = SPMI_FTSMPS_CLOCK_RATE * range->step_uV * (1 << step);  in spmi_regulator_init_slew_rate()
1651 	vreg->slew_rate = max(slew_rate, 1);  in spmi_regulator_init_slew_rate()
1662 	const struct spmi_voltage_range *range = &vreg->set_points->range[0];  in spmi_regulator_init_slew_rate_ftsmps426()
1666 		dev_err(vreg->dev, "spmi read failed, ret=%d\n", ret);  in spmi_regulator_init_slew_rate_ftsmps426()
1674 	slew_rate = clock_rate * range->step_uV;  in spmi_regulator_init_slew_rate_ftsmps426()
1680 	vreg->slew_rate = max(slew_rate, 1);  in spmi_regulator_init_slew_rate_ftsmps426()
1692 	type = vreg->logical_type;  in spmi_regulator_init_registers()
1699 	if (!(data->pin_ctrl_enable & SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {  in spmi_regulator_init_registers()
1707 				data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;  in spmi_regulator_init_registers()
1715 	if (!(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {  in spmi_regulator_init_registers()
1722 				data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;  in spmi_regulator_init_registers()
1731 				data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;  in spmi_regulator_init_registers()
1745 		if (data->vs_soft_start_strength  in spmi_regulator_init_registers()
1747 			reg = data->vs_soft_start_strength  in spmi_regulator_init_registers()
1766 	data->pin_ctrl_enable	    = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;  in spmi_regulator_get_dt_config()
1767 	data->pin_ctrl_hpm	    = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;  in spmi_regulator_get_dt_config()
1768 	data->vs_soft_start_strength	= SPMI_VS_SOFT_START_STR_HW_DEFAULT;  in spmi_regulator_get_dt_config()
1771 	of_property_read_u32(node, "qcom,ocp-max-retries",  in spmi_regulator_get_dt_config()
1772 		&vreg->ocp_max_retries);  in spmi_regulator_get_dt_config()
1773 	of_property_read_u32(node, "qcom,ocp-retry-delay",  in spmi_regulator_get_dt_config()
1774 		&vreg->ocp_retry_delay_ms);  in spmi_regulator_get_dt_config()
1775 	of_property_read_u32(node, "qcom,pin-ctrl-enable",  in spmi_regulator_get_dt_config()
1776 		&data->pin_ctrl_enable);  in spmi_regulator_get_dt_config()
1777 	of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);  in spmi_regulator_get_dt_config()
1778 	of_property_read_u32(node, "qcom,vs-soft-start-strength",  in spmi_regulator_get_dt_config()
1779 		&data->vs_soft_start_strength);  in spmi_regulator_get_dt_config()
1797 	struct spmi_regulator *vreg = config->driver_data;  in spmi_regulator_of_parse()
1798 	struct device *dev = config->dev;  in spmi_regulator_of_parse()
1803 	if (!vreg->ocp_max_retries)  in spmi_regulator_of_parse()
1804 		vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;  in spmi_regulator_of_parse()
1805 	if (!vreg->ocp_retry_delay_ms)  in spmi_regulator_of_parse()
1806 		vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;  in spmi_regulator_of_parse()
1814 	switch (vreg->logical_type) {  in spmi_regulator_of_parse()
1839 	if (vreg->logical_type != SPMI_REGULATOR_LOGICAL_TYPE_VS)  in spmi_regulator_of_parse()
1840 		vreg->ocp_irq = 0;  in spmi_regulator_of_parse()
1842 	if (vreg->ocp_irq) {  in spmi_regulator_of_parse()
1843 		ret = devm_request_irq(dev, vreg->ocp_irq,  in spmi_regulator_of_parse()
1848 				vreg->ocp_irq, ret);  in spmi_regulator_of_parse()
1852 		ret = devm_delayed_work_autocancel(dev, &vreg->ocp_work,  in spmi_regulator_of_parse()
1893 	{ "5vs1", 0x8300, "vin_5vs", "ocp-5vs1", },
1894 	{ "5vs2", 0x8400, "vin_5vs", "ocp-5vs2", },
2096 	{ .compatible = "qcom,pm8004-regulators", .data = &pm8004_regulators },
2097 	{ .compatible = "qcom,pm8005-regulators", .data = &pm8005_regulators },
2098 	{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
2099 	{ .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
2100 	{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
2101 	{ .compatible = "qcom,pm8950-regulators", .data = &pm8950_regulators },
2102 	{ .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
2103 	{ .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
2104 	{ .compatible = "qcom,pm660-regulators", .data = &pm660_regulators },
2105 	{ .compatible = "qcom,pm660l-regulators", .data = &pm660l_regulators },
2106 	{ .compatible = "qcom,pms405-regulators", .data = &pms405_regulators },
2121 	struct device *dev = &pdev->dev;  in qcom_spmi_regulator_probe()
2122 	struct device_node *node = pdev->dev.of_node;  in qcom_spmi_regulator_probe()
2130 		return -ENOMEM;  in qcom_spmi_regulator_probe()
2134 	regmap = dev_get_regmap(dev->parent, NULL);  in qcom_spmi_regulator_probe()
2136 		return -ENODEV;  in qcom_spmi_regulator_probe()
2138 	match = of_match_device(qcom_spmi_regulator_match, &pdev->dev);  in qcom_spmi_regulator_probe()
2140 		return -ENODEV;  in qcom_spmi_regulator_probe()
2142 	if (of_find_property(node, "qcom,saw-reg", &lenp)) {  in qcom_spmi_regulator_probe()
2143 		syscon = of_parse_phandle(node, "qcom,saw-reg", 0);  in qcom_spmi_regulator_probe()
2150 	for (reg = match->data; reg->name; reg++) {  in qcom_spmi_regulator_probe()
2153 			reg_node = of_get_child_by_name(node, reg->name);  in qcom_spmi_regulator_probe()
2154 			reg_prop = of_find_property(reg_node, "qcom,saw-slave",  in qcom_spmi_regulator_probe()
2163 			return -ENOMEM;  in qcom_spmi_regulator_probe()
2165 		vreg->dev = dev;  in qcom_spmi_regulator_probe()
2166 		vreg->base = reg->base;  in qcom_spmi_regulator_probe()
2167 		vreg->regmap = regmap;  in qcom_spmi_regulator_probe()
2168 		if (reg->ocp) {  in qcom_spmi_regulator_probe()
2169 			vreg->ocp_irq = platform_get_irq_byname(pdev, reg->ocp);  in qcom_spmi_regulator_probe()
2170 			if (vreg->ocp_irq < 0)  in qcom_spmi_regulator_probe()
2171 				return vreg->ocp_irq;  in qcom_spmi_regulator_probe()
2173 		vreg->desc.id = -1;  in qcom_spmi_regulator_probe()
2174 		vreg->desc.owner = THIS_MODULE;  in qcom_spmi_regulator_probe()
2175 		vreg->desc.type = REGULATOR_VOLTAGE;  in qcom_spmi_regulator_probe()
2176 		vreg->desc.enable_reg = reg->base + SPMI_COMMON_REG_ENABLE;  in qcom_spmi_regulator_probe()
2177 		vreg->desc.enable_mask = SPMI_COMMON_ENABLE_MASK;  in qcom_spmi_regulator_probe()
2178 		vreg->desc.enable_val = SPMI_COMMON_ENABLE;  in qcom_spmi_regulator_probe()
2179 		vreg->desc.name = name = reg->name;  in qcom_spmi_regulator_probe()
2180 		vreg->desc.supply_name = reg->supply;  in qcom_spmi_regulator_probe()
2181 		vreg->desc.of_match = reg->name;  in qcom_spmi_regulator_probe()
2182 		vreg->desc.of_parse_cb = spmi_regulator_of_parse;  in qcom_spmi_regulator_probe()
2183 		vreg->desc.of_map_mode = spmi_regulator_of_map_mode;  in qcom_spmi_regulator_probe()
2185 		ret = spmi_regulator_match(vreg, reg->force_type);  in qcom_spmi_regulator_probe()
2190 			reg_node = of_get_child_by_name(node, reg->name);  in qcom_spmi_regulator_probe()
2191 			reg_prop = of_find_property(reg_node, "qcom,saw-leader",  in qcom_spmi_regulator_probe()
2195 				spmi_saw_ops = *(vreg->desc.ops);  in qcom_spmi_regulator_probe()
2198 				vreg->desc.ops = &spmi_saw_ops;  in qcom_spmi_regulator_probe()
2202 		if (vreg->set_points && vreg->set_points->count == 1) {  in qcom_spmi_regulator_probe()
2204 			range = vreg->set_points->range;  in qcom_spmi_regulator_probe()
2205 			vreg->desc.uV_step = range->step_uV;  in qcom_spmi_regulator_probe()
2211 		rdev = devm_regulator_register(dev, &vreg->desc, &config);  in qcom_spmi_regulator_probe()
2217 		INIT_LIST_HEAD(&vreg->node);  in qcom_spmi_regulator_probe()
2218 		list_add(&vreg->node, vreg_list);  in qcom_spmi_regulator_probe()
2226 		.name	= "qcom-spmi-regulator",
2235 MODULE_ALIAS("platform:qcom-spmi-regulator");