[PATCH v2 1/2] samsung-laptop: Add broken-acpi-video quirk for NC210/NC110

[Hans de Goede]

The acpi-video backlight interface on the NC210 does not work, blacklist it
and use the samsung-laptop interface instead.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=861573
Cc: ***@vger.kernel.org
Signed-off-by: Hans de Goede <***@redhat.com>

--
Changes in v2: Improve commit message
---
drivers/platform/x86/samsung-laptop.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/platform/x86/samsung-laptop.c b/drivers/platform/x86/samsung-laptop.c
index 5a59665..ff765d8 100644
--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -1561,6 +1561,16 @@ static struct dmi_system_id __initdata samsung_dmi_table[] = {
},
{
.callback = samsung_dmi_matched,
+ .ident = "NC210",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "NC210/NC110"),
+ DMI_MATCH(DMI_BOARD_NAME, "NC210/NC110"),
+ },
+ .driver_data = &samsung_broken_acpi_video,
+ },
+ {
+ .callback = samsung_dmi_matched,
.ident = "730U3E/740U3E",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),

[Hans de Goede]

The acpi-video backlight interface on the Acer KAV80 is broken, and worse
it causes the entire machine to slow down significantly after a suspend/resume.

Blacklist it, and use the acer-wmi backlight interface instead. Note that
the KAV80 is somewhat unique in that it is the only Acer model where we
fall back to acer-wmi after blacklisting, rather then using the native
(e.g. intel) backlight driver. This is done because there is no native
backlight interface on this model.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1128309
Cc: ***@vger.kernel.org
Signed-off-by: Hans de Goede <***@redhat.com>

--
Changes in v2: Improve commit message
---
drivers/platform/x86/acer-wmi.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
index 96a0b75..26c4fd1 100644
--- a/drivers/platform/x86/acer-wmi.c
+++ b/drivers/platform/x86/acer-wmi.c
@@ -579,6 +579,17 @@ static const struct dmi_system_id video_vendor_dmi_table[] __initconst = {
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5741"),
},
},
+ {
+ /*
+ * Note no video_set_backlight_video_vendor, we must use the
+ * acer interface, as there is no native backlight interface.
+ */
+ .ident = "Acer KAV80",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "KAV80"),
+ },
+ },
{}
};