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authorHans de Goede <hdegoede@redhat.com>2015-03-20 10:00:00 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-03-22 22:02:51 +0100
commit64491882d399011bb0a4603e8cf481b65f0d3c5d (patch)
treeda394486ecd0bd20b294a4de951df9c7eb0e7772 /drivers/acpi/video.c
parentff92cfe7cbc05c6c62f5b06c7d9090f4c853cd51 (diff)
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.c17
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"),
+ },
+ },
{}
};