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| author | Hans de Goede <hdegoede@redhat.com> | 2015-03-20 10:00:00 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-03-22 22:02:51 +0100 |
| commit | 64491882d399011bb0a4603e8cf481b65f0d3c5d (patch) | |
| tree | da394486ecd0bd20b294a4de951df9c7eb0e7772 /drivers/acpi/video.c | |
| parent | ff92cfe7cbc05c6c62f5b06c7d9090f4c853cd51 (diff) | |
| download | linux-64491882d399011bb0a4603e8cf481b65f0d3c5d.tar.bz2 | |
ACPI / video: Add force native backlight quirk for Lenovo Ideapad Z570
The Lenovo Ideapad Z570 (which is an Acer in disguise like some other Ideapads)
has a broken acpi_video interface, this was fixed in commmit a11d342fb8
("ACPI / video: force vendor backlight on Lenovo Ideapad Z570").
Which stops acpi_video from registering a backlight interface, but this is
only a partial fix, because for people who have the ideapad-laptop module
installed that module will now register a backlight interface, which also
does not work, so we need to use the native intel_backlight interface.
The Lenovo Ideapad 570 is a pre-win8 laptop / too old for the acpi-video code
to automatically prefer the native backlight interface, so add a quirk for it.
This commit also removes the previous incomplete fix.
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1187004
Tested-by: Be <be.0@gmx.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/video.c')
| -rw-r--r-- | drivers/acpi/video.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 2f45dca31724..cc79d3fedfb2 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -425,6 +425,12 @@ static int __init video_disable_native_backlight(const struct dmi_system_id *d) return 0; } +static int __init video_enable_native_backlight(const struct dmi_system_id *d) +{ + use_native_backlight_dmi = NATIVE_BACKLIGHT_ON; + return 0; +} + static struct dmi_system_id video_dmi_table[] __initdata = { /* * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 @@ -566,6 +572,17 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "XPS L521X"), }, }, + + /* Non win8 machines which need native backlight nevertheless */ + { + /* https://bugzilla.redhat.com/show_bug.cgi?id=1187004 */ + .callback = video_enable_native_backlight, + .ident = "Lenovo Ideapad Z570", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_NAME, "102434U"), + }, + }, {} }; |