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520ee4ea1c
The purpose of this patch is to introduce a fix and removal of the current hack when determining tablet mode status. Determining the tablet mode status requires reading Byte 0 bit 2 as reported by HPWMI_HARDWARE_QUERY. The investigation identified the failure was rooted in two areas: HPWMI_HARDWARE_QUERY failure (0x05) and reading Byte 0, bit 2 only to determine the table mode status. HPWMI_HARDWARE_QUERY WMI failure also rendered the dock state value invalid. The latest changes use SMBIOS Type 3 (chassis type) and WMI Command 0x40 (device_mode_status) information to determine if the device is in tablet mode or not. hp_wmi_hw_state function was split into two functions; hp_wmi_get_dock_state and hp_wmi_get_tablet_mode. The new functions separate how dock_state and tablet_mode is handled in a cleaner manner. All changes were validated on a HP ZBook Workstation notebook, HP EliteBook x360, and HP EliteBook 850 G8. Signed-off-by: Jorge Lopez <jorge.lopez2@hp.com> Link: https://lore.kernel.org/r/20220310210853.28367-3-jorge.lopez2@hp.com Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.