1 // SPDX-License-Identifier: GPL-2.0-only
63 	struct power_supply_battery_info *info = bat->info;  in pm8916_bms_vm_battery_get_property()
70 		if (supplied < 0 && supplied != -ENODEV)  in pm8916_bms_vm_battery_get_property()
72 		else if (supplied && supplied != -ENODEV)  in pm8916_bms_vm_battery_get_property()
73 			val->intval = POWER_SUPPLY_STATUS_CHARGING;  in pm8916_bms_vm_battery_get_property()
75 			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;  in pm8916_bms_vm_battery_get_property()
79 		if (bat->vbat_now < info->voltage_min_design_uv)  in pm8916_bms_vm_battery_get_property()
80 			val->intval = POWER_SUPPLY_HEALTH_DEAD;  in pm8916_bms_vm_battery_get_property()
81 		else if (bat->vbat_now > info->voltage_max_design_uv)  in pm8916_bms_vm_battery_get_property()
82 			val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;  in pm8916_bms_vm_battery_get_property()
84 			val->intval = POWER_SUPPLY_HEALTH_GOOD;  in pm8916_bms_vm_battery_get_property()
88 		val->intval = bat->vbat_now;  in pm8916_bms_vm_battery_get_property()
96 		if (ktime_get_seconds() - bat->last_ocv_time > 180)  in pm8916_bms_vm_battery_get_property()
97 			return -ENODATA;  in pm8916_bms_vm_battery_get_property()
99 		val->intval = bat->last_ocv;  in pm8916_bms_vm_battery_get_property()
103 		return -EINVAL;  in pm8916_bms_vm_battery_get_property()
120 	ret = regmap_bulk_read(bat->regmap, bat->reg + PM8916_BMS_VM_BMS_FIFO_REG_0_LSB,  in pm8916_bms_vm_fifo_update_done_irq()
126 	 * The VM-BMS hardware only collects voltage data and the software  in pm8916_bms_vm_fifo_update_done_irq()
133 	bat->vbat_now = vbat_data[PM8916_BMS_VM_FIFO_COUNT - 1] * 300;  in pm8916_bms_vm_fifo_update_done_irq()
135 	power_supply_changed(bat->battery);  in pm8916_bms_vm_fifo_update_done_irq()
141 	.name = "pm8916-bms-vm",
150 	struct device *dev = &pdev->dev;  in pm8916_bms_vm_battery_probe()
158 		return -ENOMEM;  in pm8916_bms_vm_battery_probe()
160 	bat->dev = dev;  in pm8916_bms_vm_battery_probe()
162 	bat->regmap = dev_get_regmap(pdev->dev.parent, NULL);  in pm8916_bms_vm_battery_probe()
163 	if (!bat->regmap)  in pm8916_bms_vm_battery_probe()
164 		return -ENODEV;  in pm8916_bms_vm_battery_probe()
166 	ret = device_property_read_u32(dev, "reg", &bat->reg);  in pm8916_bms_vm_battery_probe()
168 		return -EINVAL;  in pm8916_bms_vm_battery_probe()
179 	ret = regmap_bulk_read(bat->regmap, bat->reg + PM8916_PERPH_TYPE, &tmp, 2);  in pm8916_bms_vm_battery_probe()
184 		return dev_err_probe(dev, -ENODEV, "Device reported wrong type: 0x%X\n", tmp);  in pm8916_bms_vm_battery_probe()
186 	ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_S1_SAMPLE_INTERVAL_CTL,  in pm8916_bms_vm_battery_probe()
190 	ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_S2_SAMPLE_INTERVAL_CTL,  in pm8916_bms_vm_battery_probe()
194 	ret = regmap_write(bat->regmap, bat->reg + PM8916_BMS_VM_FIFO_LENGTH_CTL,  in pm8916_bms_vm_battery_probe()
198 	ret = regmap_write(bat->regmap,  in pm8916_bms_vm_battery_probe()
199 			   bat->reg + PM8916_BMS_VM_EN_CTL, PM8916_BMS_ENABLED);  in pm8916_bms_vm_battery_probe()
203 	ret = regmap_bulk_read(bat->regmap,  in pm8916_bms_vm_battery_probe()
204 			       bat->reg + PM8916_BMS_VM_S3_S7_OCV_DATA0, &tmp, 2);  in pm8916_bms_vm_battery_probe()
208 	bat->last_ocv_time = ktime_get_seconds();  in pm8916_bms_vm_battery_probe()
209 	bat->last_ocv = tmp * 300;  in pm8916_bms_vm_battery_probe()
210 	bat->vbat_now = bat->last_ocv;  in pm8916_bms_vm_battery_probe()
213 	psy_cfg.of_node = dev->of_node;  in pm8916_bms_vm_battery_probe()
215 	bat->battery = devm_power_supply_register(dev, &pm8916_bms_vm_battery_psy_desc, &psy_cfg);  in pm8916_bms_vm_battery_probe()
216 	if (IS_ERR(bat->battery))  in pm8916_bms_vm_battery_probe()
217 		return dev_err_probe(dev, PTR_ERR(bat->battery), "Unable to register battery\n");  in pm8916_bms_vm_battery_probe()
219 	ret = power_supply_get_battery_info(bat->battery, &bat->info);  in pm8916_bms_vm_battery_probe()
242 	ret = regmap_write(bat->regmap,  in pm8916_bms_vm_battery_suspend()
243 			   bat->reg + PM8916_SEC_ACCESS, PM8916_SEC_MAGIC);  in pm8916_bms_vm_battery_suspend()
246 	ret = regmap_write(bat->regmap,  in pm8916_bms_vm_battery_suspend()
247 			   bat->reg + PM8916_BMS_VM_MODE_CTL, PM8916_BMS_VM_MODE_FORCE_S3);  in pm8916_bms_vm_battery_suspend()
254 	dev_err(bat->dev, "Failed to force S3 mode: %pe\n", ERR_PTR(ret));  in pm8916_bms_vm_battery_suspend()
264 	ret = regmap_bulk_read(bat->regmap,  in pm8916_bms_vm_battery_resume()
265 			       bat->reg + PM8916_BMS_VM_S3_S7_OCV_DATA0, &tmp, 2);  in pm8916_bms_vm_battery_resume()
267 	bat->last_ocv_time = ktime_get_seconds();  in pm8916_bms_vm_battery_resume()
268 	bat->last_ocv = tmp * 300;  in pm8916_bms_vm_battery_resume()
270 	ret = regmap_write(bat->regmap,  in pm8916_bms_vm_battery_resume()
271 			   bat->reg + PM8916_SEC_ACCESS, PM8916_SEC_MAGIC);  in pm8916_bms_vm_battery_resume()
274 	ret = regmap_write(bat->regmap,  in pm8916_bms_vm_battery_resume()
275 			   bat->reg + PM8916_BMS_VM_MODE_CTL, PM8916_BMS_VM_MODE_NORMAL);  in pm8916_bms_vm_battery_resume()
282 	dev_err(bat->dev, "Failed to return normal mode: %pe\n", ERR_PTR(ret));  in pm8916_bms_vm_battery_resume()
287 	{ .compatible = "qcom,pm8916-bms-vm", },
294 		.name = "pm8916-bms-vm",
303 MODULE_DESCRIPTION("pm8916 BMS-VM driver");