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Update extcon for 4.12 Detailed description for this pull request: 1. Add new 'extcon-intel-cht-wc.c' driver - Intel Cherrytrail Whiskey Cove PMIC extcon driver supports the detection of the charger connectors and the control. 2. Add new extcon API to monitor the all external connectors. - The extcon consumer might need to monitor the all supported external connectors from the extcon device. Before, the extcon consumer should have each notifier_block structure for each external connector. In order to support the requirement, the extcon adds new extcon_register_notifier_all() API. The extcon consumer is able to monitor the state change of all supported external connectors from the extcon device by using only one notifier_block. - extcon_(register|unregister)_notifier_all(struct extcon_dev *edev struct notifier_block *nb) - devm_extcon_(register|unregister)_notifier_all(struct device *dev, struct extcon_dev *edev struct notifier_block *nb) 3. Remove porting compatibility of old switch class - The extcon removes the porting compatibility of old switch class because there are no any use-case and requirement of switch class. 4. Update the extcon drivers and Fix the minor issues - Revert the ACPI gpio interface on the extcon-usb-gpioc.c. - Fix the issues related to the suspend-to-ram for both extcon-usb-gpio.c and extcon-palmas.c. - Add warning message for extcon-arizona.c when headphone detection is not finished.
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.