• Jani Nikula's avatar
    drm/i915: make i915 the source of acpi device ids for _DOD · 8e1b56a4
    Jani Nikula authored
    The graphics driver is supposed to define the DIDL, which are used for
    _DOD, not the BIOS. Restore that behaviour.
    
    This is basically a revert of
    
    commit 3143751f
    Author: Zhang Rui <rui.zhang@intel.com>
    Date:   Mon Mar 29 15:12:16 2010 +0800
    
        drm/i915: set DIDL using the ACPI video output device _ADR method return.
    
    which went out of its way to cater to a specific BIOS, setting up DIDL
    based on _ADR method. Perhaps that approach worked on that specific
    machine, but on the machines I checked the _ADR method invents the
    device identifiers out of thin air if DIDL has not been set. The source
    for _ADR is also supposed to be the DIDL set by the driver, not the
    other way around.
    
    With this, we'll also limit the number of outputs to what the driver
    actually has.
    
    A side effect of this change is that the DIDL, and by proxy CADL, will
    be initialized in the order of the connector list. That, in turn, has
    internal panels in front, ensuring they're included in the DIDL and CADL
    lists. Hopefully this ensures the BIOS does not block backlight hotkey
    events, thinking the internal panel is off.
    
    v2: do not set ACPI_DEVICE_ID_SCHEME in the device id (Peter Wu)
    
    v3: Rebase
    
    Cc: Peter Wu <peter@lekensteyn.nl>
    Cc: Rainer Koenig <Rainer.Koenig@ts.fujitsu.com>
    Cc: Jan-Marek Glogowski <glogow@fbihome.de>
    Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
    Cc: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
    Cc: Paolo Stivanin <paolostivanin@fastmail.fm>
    Tested-by: default avatarRainer Koenig <Rainer.Koenig@ts.fujitsu.com>
    Tested-by: default avatarPaolo Stivanin <paolostivanin@fastmail.fm>
    Tested-by: default avatarMarcos Paulo de Souza <marcos.souza.org@gmail.com>
    Reviewed-and-tested-by: default avatarPeter Wu <peter@lekensteyn.nl>
    Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
    Link: http://patchwork.freedesktop.org/patch/msgid/9660d29cf310c17bbf4d58c0e09d5b047446e2d5.1479295490.git.jani.nikula@intel.com
    8e1b56a4
intel_drv.h 60 KB