power/regulator/fixed.c

1 // SPDX-License-Identifier: GPL-2.0+
13 #include <power/pmic.h>
14 #include <power/regulator.h>
33 		return -ENXIO;  in fixed_regulator_ofdata_to_platdata()
36 	uc_pdata->type = REGULATOR_TYPE_FIXED;  in fixed_regulator_ofdata_to_platdata()
38 	if (dev_read_bool(dev, "enable-active-high"))  in fixed_regulator_ofdata_to_platdata()
42 	gpio = &dev_pdata->gpio;  in fixed_regulator_ofdata_to_platdata()
45 		debug("Fixed regulator optional enable GPIO - not found! Error: %d\n",  in fixed_regulator_ofdata_to_platdata()
47 		if (ret != -ENOENT)  in fixed_regulator_ofdata_to_platdata()
51 	/* Get optional ramp up delay */  in fixed_regulator_ofdata_to_platdata()
52 	dev_pdata->startup_delay_us = dev_read_u32_default(dev,  in fixed_regulator_ofdata_to_platdata()
53 							"startup-delay-us", 0);  in fixed_regulator_ofdata_to_platdata()
54 	dev_pdata->off_on_delay_us =  in fixed_regulator_ofdata_to_platdata()
55 			dev_read_u32_default(dev, "u-boot,off-on-delay-us", 0);  in fixed_regulator_ofdata_to_platdata()
66 		return -ENXIO;  in fixed_regulator_get_value()
68 	if (uc_pdata->min_uV != uc_pdata->max_uV) {  in fixed_regulator_get_value()
69 		debug("Invalid constraints for: %s\n", uc_pdata->name);  in fixed_regulator_get_value()
70 		return -EINVAL;  in fixed_regulator_get_value()
73 	return uc_pdata->min_uV;  in fixed_regulator_get_value()
82 		return -ENXIO;  in fixed_regulator_get_current()
84 	if (uc_pdata->min_uA != uc_pdata->max_uA) {  in fixed_regulator_get_current()
85 		debug("Invalid constraints for: %s\n", uc_pdata->name);  in fixed_regulator_get_current()
86 		return -EINVAL;  in fixed_regulator_get_current()
89 	return uc_pdata->min_uA;  in fixed_regulator_get_current()
97 	if (!dev_pdata->gpio.dev)  in fixed_regulator_get_enable()
100 	return dm_gpio_get_value(&dev_pdata->gpio);  in fixed_regulator_get_enable()
108 	debug("%s: dev='%s', enable=%d, delay=%d, has_gpio=%d\n", __func__,  in fixed_regulator_set_enable()
109 	      dev->name, enable, dev_pdata->startup_delay_us,  in fixed_regulator_set_enable()
110 	      dm_gpio_is_valid(&dev_pdata->gpio));  in fixed_regulator_set_enable()
112 	if (!dm_gpio_is_valid(&dev_pdata->gpio)) {  in fixed_regulator_set_enable()
114 			return -ENOSYS;  in fixed_regulator_set_enable()
118 	ret = dm_gpio_set_value(&dev_pdata->gpio, enable);  in fixed_regulator_set_enable()
120 		pr_err("Can't set regulator : %s gpio to: %d\n", dev->name,  in fixed_regulator_set_enable()
125 	if (enable && dev_pdata->startup_delay_us)  in fixed_regulator_set_enable()
126 		udelay(dev_pdata->startup_delay_us);  in fixed_regulator_set_enable()
129 	if (!enable && dev_pdata->off_on_delay_us)  in fixed_regulator_set_enable()
130 		udelay(dev_pdata->off_on_delay_us);  in fixed_regulator_set_enable()
143 	{ .compatible = "regulator-fixed" },