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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>
This commit is contained in:
Hans de Goede 2015-03-20 10:00:00 +01:00 committed by Rafael J. Wysocki
parent ff92cfe7cb
commit 64491882d3
2 changed files with 17 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/acpi/video.c
View File

@ -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"),
},
},
{}
};

8
drivers/acpi/video_detect.c
View File

@ -174,14 +174,6 @@ static struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5737"),
},
},
{
.callback = video_detect_force_vendor,
.ident = "Lenovo IdeaPad Z570",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Ideapad Z570"),
},
},
{ },
};