1 // SPDX-License-Identifier: GPL-2.0-only
13 #include <linux/gpio/consumer.h>
88 /* Default DVS Mode */
92 /* dump registers in regmap-debugfs */
160 	ret = regmap_read(lp->regmap, addr, &val);  in lp872x_read_byte()
162 		dev_err(lp->dev, "failed to read 0x%.2x\n", addr);  in lp872x_read_byte()
172 	return regmap_write(lp->regmap, addr, data);  in lp872x_write_byte()
178 	return regmap_update_bits(lp->regmap, addr, mask, data);  in lp872x_update_bits()
183 	enum lp872x_id chip = lp->chipid;  in lp872x_get_timestep_usec()
203 		return -EINVAL;  in lp872x_get_timestep_usec()
212 		return -EINVAL;  in lp872x_get_timestep_usec()
233 		addr = LP872X_LDO1_VOUT + rid - LP8725_ID_BASE;  in lp872x_regulator_enable_time()
239 		return -EINVAL;  in lp872x_regulator_enable_time()
252 			struct gpio_desc *gpio)  in lp872x_set_dvs()  argument
257 	gpiod_set_value(gpio, state);  in lp872x_set_dvs()
258 	lp->dvs_pin = state;  in lp872x_set_dvs()
272 			addr = (lp->dvs_pin == GPIOD_OUT_HIGH) ?  in lp872x_select_buck_vout_addr()
286 			addr = (lp->dvs_pin == GPIOD_OUT_HIGH) ?  in lp872x_select_buck_vout_addr()
321 	struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL;  in lp872x_buck_set_voltage_sel()  local
323 	if (dvs && dvs->gpio)  in lp872x_buck_set_voltage_sel()
324 		lp872x_set_dvs(lp, dvs->vsel, dvs->gpio);  in lp872x_buck_set_voltage_sel()
328 		return -EINVAL;  in lp872x_buck_set_voltage_sel()
342 		return -EINVAL;  in lp872x_buck_get_voltage_sel()
374 		return -EINVAL;  in lp872x_buck_set_mode()
382 		return -EINVAL;  in lp872x_buck_set_mode()
408 		return -EINVAL;  in lp872x_buck_get_mode()
677 	struct lp872x_dvs *dvs = lp->pdata ? lp->pdata->dvs : NULL;  in lp872x_init_dvs()  local
682 	if (!dvs)  in lp872x_init_dvs()
685 	if (!dvs->gpio)  in lp872x_init_dvs()
688 	pinstate = dvs->init_state;  in lp872x_init_dvs()
689 	dvs->gpio = devm_gpiod_get_optional(lp->dev, "ti,dvs", pinstate);  in lp872x_init_dvs()
691 	if (IS_ERR(dvs->gpio)) {  in lp872x_init_dvs()
692 		dev_err(lp->dev, "gpio request err: %ld\n", PTR_ERR(dvs->gpio));  in lp872x_init_dvs()
693 		return PTR_ERR(dvs->gpio);  in lp872x_init_dvs()
696 	lp->dvs_pin = pinstate;  in lp872x_init_dvs()
701 	return lp872x_update_bits(lp, LP872X_GENERAL_CFG, mask[lp->chipid],  in lp872x_init_dvs()
702 				default_dvs_mode[lp->chipid]);  in lp872x_init_dvs()
707 	if (!lp->pdata)  in lp872x_hw_enable()
708 		return -EINVAL;  in lp872x_hw_enable()
710 	if (!lp->pdata->enable_gpio)  in lp872x_hw_enable()
713 	/* Always set enable GPIO high. */  in lp872x_hw_enable()
714 	lp->pdata->enable_gpio = devm_gpiod_get_optional(lp->dev, "enable", GPIOD_OUT_HIGH);  in lp872x_hw_enable()
715 	if (IS_ERR(lp->pdata->enable_gpio)) {  in lp872x_hw_enable()
716 		dev_err(lp->dev, "gpio request err: %ld\n", PTR_ERR(lp->pdata->enable_gpio));  in lp872x_hw_enable()
717 		return PTR_ERR(lp->pdata->enable_gpio);  in lp872x_hw_enable()
721 	if (lp->chipid == LP8720)  in lp872x_hw_enable()
731 	struct lp872x_platform_data *pdata = lp->pdata;  in lp872x_config()
734 	if (!pdata || !pdata->update_config)  in lp872x_config()
737 	ret = lp872x_write_byte(lp, LP872X_GENERAL_CFG, pdata->general_config);  in lp872x_config()
748 	struct lp872x_platform_data *pdata = lp->pdata;  in lp872x_find_regulator_init_data()
754 	for (i = 0; i < lp->num_regulators; i++) {  in lp872x_find_regulator_init_data()
755 		if (pdata->regulator_data[i].id == id)  in lp872x_find_regulator_init_data()
756 			return pdata->regulator_data[i].init_data;  in lp872x_find_regulator_init_data()
769 	for (i = 0; i < lp->num_regulators; i++) {  in lp872x_regulator_register()
770 		desc = (lp->chipid == LP8720) ? &lp8720_regulator_desc[i] :  in lp872x_regulator_register()
773 		cfg.dev = lp->dev;  in lp872x_regulator_register()
774 		cfg.init_data = lp872x_find_regulator_init_data(desc->id, lp);  in lp872x_regulator_register()
776 		cfg.regmap = lp->regmap;  in lp872x_regulator_register()
778 		rdev = devm_regulator_register(lp->dev, desc, &cfg);  in lp872x_regulator_register()
780 			dev_err(lp->dev, "regulator register err");  in lp872x_regulator_register()
822 	struct device_node *np = dev->of_node;  in lp872x_populate_pdata_from_dt()
832 		return ERR_PTR(-ENOMEM);  in lp872x_populate_pdata_from_dt()
834 	of_property_read_u8(np, "ti,general-config", &pdata->general_config);  in lp872x_populate_pdata_from_dt()
835 	pdata->update_config = of_property_read_bool(np, "ti,update-config");  in lp872x_populate_pdata_from_dt()
837 	pdata->dvs = devm_kzalloc(dev, sizeof(struct lp872x_dvs), GFP_KERNEL);  in lp872x_populate_pdata_from_dt()
838 	if (!pdata->dvs)  in lp872x_populate_pdata_from_dt()
839 		return ERR_PTR(-ENOMEM);  in lp872x_populate_pdata_from_dt()
841 	of_property_read_u8(np, "ti,dvs-vsel", (u8 *)&pdata->dvs->vsel);  in lp872x_populate_pdata_from_dt()
842 	of_property_read_u8(np, "ti,dvs-state", &dvs_state);  in lp872x_populate_pdata_from_dt()
843 	pdata->dvs->init_state = dvs_state ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;  in lp872x_populate_pdata_from_dt()
866 		pdata->regulator_data[i].id =  in lp872x_populate_pdata_from_dt()
868 		pdata->regulator_data[i].init_data = match[i].init_data;  in lp872x_populate_pdata_from_dt()
892 	if (cl->dev.of_node) {  in lp872x_probe()
893 		pdata = lp872x_populate_pdata_from_dt(&cl->dev,  in lp872x_probe()
894 					      (enum lp872x_id)id->driver_data);  in lp872x_probe()
898 		pdata = dev_get_platdata(&cl->dev);  in lp872x_probe()
901 	lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL);  in lp872x_probe()
903 		return -ENOMEM;  in lp872x_probe()
905 	lp->num_regulators = lp872x_num_regulators[id->driver_data];  in lp872x_probe()
907 	lp->regmap = devm_regmap_init_i2c(cl, &lp872x_regmap_config);  in lp872x_probe()
908 	if (IS_ERR(lp->regmap)) {  in lp872x_probe()
909 		ret = PTR_ERR(lp->regmap);  in lp872x_probe()
910 		dev_err(&cl->dev, "regmap init i2c err: %d\n", ret);  in lp872x_probe()
914 	lp->dev = &cl->dev;  in lp872x_probe()
915 	lp->pdata = pdata;  in lp872x_probe()
916 	lp->chipid = id->driver_data;  in lp872x_probe()