Lines Matching +full:gpio +full:- +full:charger
1 // SPDX-License-Identifier: GPL-2.0+
3 * Driver for Analog Devices (Linear Technology) LT3651 charger IC.
8 #include <linux/gpio/consumer.h>
19 struct power_supply *charger;
28 struct power_supply *charger = devid;
30 power_supply_changed(charger);
48 if (!lt3651_charger->chrg_gpio) {
49 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
52 if (gpiod_get_value(lt3651_charger->chrg_gpio))
53 val->intval = POWER_SUPPLY_STATUS_CHARGING;
55 val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
58 val->intval = gpiod_get_value(lt3651_charger->acpr_gpio);
61 if (!lt3651_charger->fault_gpio) {
62 val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
65 if (!gpiod_get_value(lt3651_charger->fault_gpio)) {
66 val->intval = POWER_SUPPLY_HEALTH_GOOD;
73 if (!lt3651_charger->chrg_gpio) {
74 val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
77 val->intval = gpiod_get_value(lt3651_charger->chrg_gpio) ?
82 return -EINVAL;
101 lt3651_charger = devm_kzalloc(&pdev->dev, sizeof(*lt3651_charger),
104 return -ENOMEM;
106 lt3651_charger->acpr_gpio = devm_gpiod_get(&pdev->dev,
108 if (IS_ERR(lt3651_charger->acpr_gpio)) {
109 ret = PTR_ERR(lt3651_charger->acpr_gpio);
110 dev_err(&pdev->dev, "Failed to acquire acpr GPIO: %d\n", ret);
113 lt3651_charger->fault_gpio = devm_gpiod_get_optional(&pdev->dev,
115 if (IS_ERR(lt3651_charger->fault_gpio)) {
116 ret = PTR_ERR(lt3651_charger->fault_gpio);
117 dev_err(&pdev->dev, "Failed to acquire fault GPIO: %d\n", ret);
120 lt3651_charger->chrg_gpio = devm_gpiod_get_optional(&pdev->dev,
122 if (IS_ERR(lt3651_charger->chrg_gpio)) {
123 ret = PTR_ERR(lt3651_charger->chrg_gpio);
124 dev_err(&pdev->dev, "Failed to acquire chrg GPIO: %d\n", ret);
128 charger_desc = <3651_charger->charger_desc;
129 charger_desc->name = pdev->dev.of_node->name;
130 charger_desc->type = POWER_SUPPLY_TYPE_MAINS;
131 charger_desc->properties = lt3651_charger_properties;
132 charger_desc->num_properties = ARRAY_SIZE(lt3651_charger_properties);
133 charger_desc->get_property = lt3651_charger_get_property;
134 psy_cfg.fwnode = dev_fwnode(&pdev->dev);
137 lt3651_charger->charger = devm_power_supply_register(&pdev->dev,
139 if (IS_ERR(lt3651_charger->charger)) {
140 ret = PTR_ERR(lt3651_charger->charger);
141 dev_err(&pdev->dev, "Failed to register power supply: %d\n",
147 * Acquire IRQs for the GPIO pins if possible. If the system does not
151 if (lt3651_charger->acpr_gpio) {
152 ret = gpiod_to_irq(lt3651_charger->acpr_gpio);
154 ret = devm_request_any_context_irq(&pdev->dev, ret,
157 dev_name(&pdev->dev), lt3651_charger->charger);
159 dev_warn(&pdev->dev, "Failed to request acpr irq\n");
161 if (lt3651_charger->fault_gpio) {
162 ret = gpiod_to_irq(lt3651_charger->fault_gpio);
164 ret = devm_request_any_context_irq(&pdev->dev, ret,
167 dev_name(&pdev->dev), lt3651_charger->charger);
169 dev_warn(&pdev->dev, "Failed to request fault irq\n");
171 if (lt3651_charger->chrg_gpio) {
172 ret = gpiod_to_irq(lt3651_charger->chrg_gpio);
174 ret = devm_request_any_context_irq(&pdev->dev, ret,
177 dev_name(&pdev->dev), lt3651_charger->charger);
179 dev_warn(&pdev->dev, "Failed to request chrg irq\n");
188 { .compatible = "lltc,ltc3651-charger" }, /* DEPRECATED */
189 { .compatible = "lltc,lt3651-charger" },
197 .name = "lt3651-charger",
205 MODULE_DESCRIPTION("Driver for LT3651 charger");
207 MODULE_ALIAS("platform:lt3651-charger");