1 // SPDX-License-Identifier: GPL-2.0+
3  * Fast-charge control for Apple "MFi" devices
8 /* Standard include files */
15 MODULE_DESCRIPTION("Fast-charge control for Apple \"MFi\" devices");
23 /* The product ID is defined as starting with 0x12nn, as per the
30  * ■ Product ID: 0x12nn
43 /* Driver-local specific stuff */
58 	if (mfi->charge_type == val->intval) {  in apple_mfi_fc_set_charge_type()
59 		dev_dbg(&mfi->udev->dev, "charge type %d already set\n",  in apple_mfi_fc_set_charge_type()
60 				mfi->charge_type);  in apple_mfi_fc_set_charge_type()
64 	switch (val->intval) {  in apple_mfi_fc_set_charge_type()
72 		return -EINVAL;  in apple_mfi_fc_set_charge_type()
76 	retval = usb_control_msg(mfi->udev, usb_sndctrlpipe(mfi->udev, 0),  in apple_mfi_fc_set_charge_type()
83 		dev_dbg(&mfi->udev->dev, "retval = %d\n", retval);  in apple_mfi_fc_set_charge_type()
87 	mfi->charge_type = val->intval;  in apple_mfi_fc_set_charge_type()
98 	dev_dbg(&mfi->udev->dev, "prop: %d\n", psp);  in apple_mfi_fc_get_property()
102 		val->intval = mfi->charge_type;  in apple_mfi_fc_get_property()
105 		val->intval = POWER_SUPPLY_SCOPE_DEVICE;  in apple_mfi_fc_get_property()
108 		return -ENODATA;  in apple_mfi_fc_get_property()
121 	dev_dbg(&mfi->udev->dev, "prop: %d\n", psp);  in apple_mfi_fc_set_property()
123 	ret = pm_runtime_get_sync(&mfi->udev->dev);  in apple_mfi_fc_set_property()
125 		pm_runtime_put_noidle(&mfi->udev->dev);  in apple_mfi_fc_set_property()
134 		ret = -EINVAL;  in apple_mfi_fc_set_property()
137 	pm_runtime_mark_last_busy(&mfi->udev->dev);  in apple_mfi_fc_set_property()
138 	pm_runtime_put_autosuspend(&mfi->udev->dev);  in apple_mfi_fc_set_property()
173 	idProduct = le16_to_cpu(udev->descriptor.idProduct);  in mfi_fc_match()
186 		return -ENODEV;  in mfi_fc_probe()
190 		return -ENOMEM;  in mfi_fc_probe()
192 	battery_name = kasprintf(GFP_KERNEL, "apple_mfi_fastcharge_%d-%d",  in mfi_fc_probe()
193 				 udev->bus->busnum, udev->devnum);  in mfi_fc_probe()
195 		err = -ENOMEM;  in mfi_fc_probe()
199 	mfi->battery_desc = apple_mfi_fc_desc;  in mfi_fc_probe()
200 	mfi->battery_desc.name = battery_name;  in mfi_fc_probe()
204 	mfi->charge_type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;  in mfi_fc_probe()
205 	mfi->battery = power_supply_register(&udev->dev,  in mfi_fc_probe()
206 						&mfi->battery_desc,  in mfi_fc_probe()
208 	if (IS_ERR(mfi->battery)) {  in mfi_fc_probe()
209 		dev_err(&udev->dev, "Can't register battery\n");  in mfi_fc_probe()
210 		err = PTR_ERR(mfi->battery);  in mfi_fc_probe()
214 	mfi->udev = usb_get_dev(udev);  in mfi_fc_probe()
215 	dev_set_drvdata(&udev->dev, mfi);  in mfi_fc_probe()
230 	mfi = dev_get_drvdata(&udev->dev);  in mfi_fc_disconnect()
231 	if (mfi->battery)  in mfi_fc_disconnect()
232 		power_supply_unregister(mfi->battery);  in mfi_fc_disconnect()
233 	kfree(mfi->battery_desc.name);  in mfi_fc_disconnect()
234 	dev_set_drvdata(&udev->dev, NULL);  in mfi_fc_disconnect()
235 	usb_put_dev(mfi->udev);  in mfi_fc_disconnect()
240 	.name =		"apple-mfi-fastcharge",