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Generic battery handling code is spread between the pen and pad codepaths since battery usages may appear in reports for either. This makes it difficult to concisely see the logic involved. Since battery data is not treated like other data (i.e., we report it through the power_supply subsystem rather than through the input subsystem), it makes reasonable sense to split the functionality out into its own functions. This commit has the generic battery handling duplicate the same pattern that is used by the pen, pad, and touch interfaces. A "mapping" function is provided to set up the battery, an "event" function is provided to update the battery data, and a "report" function is provided to notify the power_supply subsystem after all the data has been read. We look at the usage itself rather than its collection to determine if one of the battery functions should handle it. Additionally, we unconditionally call the "report" function since there is no particularly good way to know if a report contained a battery usage; 'wacom_notify_battery()' will filter out any duplicate updates, however. Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com> Reviewed-by: Ping Cheng <ping.cheng@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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.