Use native backlight for newer laptop models with nvidia and ati GPUs (rhbz 1093171)
From: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Josh Boyer
parent
51fdf98b47
commit
e6a4d30f1b
45
acpi-video-Add-use-native-backlight-quirk-for-the-Th.patch
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45
acpi-video-Add-use-native-backlight-quirk-for-the-Th.patch
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@ -0,0 +1,45 @@
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Bugzilla: 1093171
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Upstream-status: Queued for 3.16
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From 7ac976d0109433d1ad0812f4f6889a904d9a0c40 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Mon, 2 Jun 2014 17:41:10 +0200
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Subject: [PATCH 13/14] acpi-video: Add use native backlight quirk for the
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ThinkPad W530
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Like all of the other *30 ThinkPad models, the W530 has a broken acpi-video
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backlight control. Note in order for this to actually fix things on the
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ThinkPad W530 the commit titled:
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"nouveau: Don't check acpi_video_backlight_support() before registering backlight"
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is also needed.
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https://bugzilla.redhat.com/show_bug.cgi?id=1093171
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Cc: stable@vger.kernel.org
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/acpi/video.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
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index ab7cd65ce21e..dcb0ef4c22f6 100644
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--- a/drivers/acpi/video.c
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+++ b/drivers/acpi/video.c
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@@ -468,6 +468,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
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},
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{
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.callback = video_set_use_native_backlight,
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+ .ident = "ThinkPad W530",
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+ .matches = {
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+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad W530"),
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+ },
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+ },
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+ {
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+ .callback = video_set_use_native_backlight,
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.ident = "ThinkPad X230",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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--
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1.9.0
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130
acpi-video-Unregister-the-backlight-device-if-a-raw-.patch
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130
acpi-video-Unregister-the-backlight-device-if-a-raw-.patch
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@ -0,0 +1,130 @@
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Bugzilla: 1093171
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Upstream-status: Queued for 3.16
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From 7f5b3e9378c0adfdb1cf2ffde6c4f890e05517c7 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Mon, 2 Jun 2014 17:41:09 +0200
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Subject: [PATCH 12/14] acpi-video: Unregister the backlight device if a raw
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one shows up later
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When video.use_native_backlight=1 and non intel gfx are in use, the raw
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backlight device of the gfx driver will show up after acpi-video has done its
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acpi_video_verify_backlight_support() check.
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This causes video.use_native_backlight=1 to not have the desired result.
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This patch fixes this by adding a backlight notifier and when a raw
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backlight is registered or unregistered re-doing the
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acpi_video_verify_backlight_support() check.
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/acpi/video.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 57 insertions(+)
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diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
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index d4d6ea3ac77a..ab7cd65ce21e 100644
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--- a/drivers/acpi/video.c
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+++ b/drivers/acpi/video.c
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@@ -151,6 +151,7 @@ struct acpi_video_enumerated_device {
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struct acpi_video_bus {
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struct acpi_device *device;
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bool backlight_registered;
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+ bool backlight_notifier_registered;
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u8 dos_setting;
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struct acpi_video_enumerated_device *attached_array;
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u8 attached_count;
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@@ -162,6 +163,7 @@ struct acpi_video_bus {
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struct input_dev *input;
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char phys[32]; /* for input device */
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struct notifier_block pm_nb;
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+ struct notifier_block backlight_nb;
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};
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struct acpi_video_device_flags {
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@@ -1732,6 +1734,9 @@ static int acpi_video_bus_register_backlight(struct acpi_video_bus *video)
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{
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struct acpi_video_device *dev;
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+ if (video->backlight_registered)
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+ return 0;
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+
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if (!acpi_video_verify_backlight_support())
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return 0;
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@@ -1876,6 +1881,56 @@ static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video)
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video->input = NULL;
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}
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+static int acpi_video_backlight_notify(struct notifier_block *nb,
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+ unsigned long val, void *bd)
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+{
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+ struct backlight_device *backlight = bd;
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+ struct acpi_video_bus *video;
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+
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+ /* acpi_video_verify_backlight_support only cares about raw devices */
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+ if (backlight->props.type != BACKLIGHT_RAW)
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+ return NOTIFY_DONE;
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+
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+ video = container_of(nb, struct acpi_video_bus, backlight_nb);
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+
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+ switch (val) {
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+ case BACKLIGHT_REGISTERED:
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+ if (!acpi_video_verify_backlight_support())
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+ acpi_video_bus_unregister_backlight(video);
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+ break;
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+ case BACKLIGHT_UNREGISTERED:
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+ acpi_video_bus_register_backlight(video);
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+ break;
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+ }
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+
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+ return NOTIFY_OK;
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+}
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+
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+static int acpi_video_bus_add_backlight_notify_handler(
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+ struct acpi_video_bus *video)
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+{
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+ int error;
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+
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+ video->backlight_nb.notifier_call = acpi_video_backlight_notify;
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+ video->backlight_nb.priority = 0;
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+ error = backlight_register_notifier(&video->backlight_nb);
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+ if (error == 0)
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+ video->backlight_notifier_registered = true;
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+
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+ return error;
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+}
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+
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+static int acpi_video_bus_remove_backlight_notify_handler(
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+ struct acpi_video_bus *video)
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+{
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+ if (!video->backlight_notifier_registered)
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+ return 0;
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+
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+ video->backlight_notifier_registered = false;
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+
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+ return backlight_unregister_notifier(&video->backlight_nb);
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+}
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+
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static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
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{
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struct acpi_video_device *dev, *next;
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@@ -1957,6 +2012,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
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acpi_video_bus_register_backlight(video);
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acpi_video_bus_add_notify_handler(video);
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+ acpi_video_bus_add_backlight_notify_handler(video);
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return 0;
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@@ -1980,6 +2036,7 @@ static int acpi_video_bus_remove(struct acpi_device *device)
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video = acpi_driver_data(device);
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+ acpi_video_bus_remove_backlight_notify_handler(video);
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acpi_video_bus_remove_notify_handler(video);
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acpi_video_bus_unregister_backlight(video);
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acpi_video_bus_put_devices(video);
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--
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1.9.0
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132
backlight-Add-backlight-device-un-registration-notif.patch
Normal file
132
backlight-Add-backlight-device-un-registration-notif.patch
Normal file
@ -0,0 +1,132 @@
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Bugzilla: 1093171
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Upstream-status: Queued for 3.16
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From ee515e61a002b4d571407173ac8bbadadc114cf0 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Mon, 2 Jun 2014 17:41:08 +0200
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Subject: [PATCH 11/14] backlight: Add backlight device (un)registration
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notification
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Some firmware drivers, ie acpi-video want to get themselves out of the
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way (in some cases) when their also is a raw backlight device available.
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Due to module loading ordering being unknown, acpi-video cannot be certain
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that the backlight_device_registered(BACKLIGHT_RAW) it does for this is
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the final verdict wrt there being a BACKLIGHT_RAW device.
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By adding notification acpi-video can listen for backlight devices showing
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up after it has loaded, and unregister its backlight device if desired.
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/video/backlight/backlight.c | 40 +++++++++++++++++++++++++++++++++++++
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include/linux/backlight.h | 7 +++++++
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2 files changed, 47 insertions(+)
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diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
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index bd2172c2d650..428089009cd5 100644
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--- a/drivers/video/backlight/backlight.c
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+++ b/drivers/video/backlight/backlight.c
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@@ -23,6 +23,7 @@
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static struct list_head backlight_dev_list;
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static struct mutex backlight_dev_list_mutex;
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+static struct blocking_notifier_head backlight_notifier;
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static const char *const backlight_types[] = {
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[BACKLIGHT_RAW] = "raw",
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@@ -370,6 +371,9 @@ struct backlight_device *backlight_device_register(const char *name,
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list_add(&new_bd->entry, &backlight_dev_list);
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mutex_unlock(&backlight_dev_list_mutex);
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+ blocking_notifier_call_chain(&backlight_notifier,
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+ BACKLIGHT_REGISTERED, new_bd);
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+
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return new_bd;
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}
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EXPORT_SYMBOL(backlight_device_register);
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@@ -413,6 +417,10 @@ void backlight_device_unregister(struct backlight_device *bd)
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pmac_backlight = NULL;
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mutex_unlock(&pmac_backlight_mutex);
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#endif
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+
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+ blocking_notifier_call_chain(&backlight_notifier,
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+ BACKLIGHT_UNREGISTERED, bd);
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+
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mutex_lock(&bd->ops_lock);
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bd->ops = NULL;
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mutex_unlock(&bd->ops_lock);
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@@ -438,6 +446,36 @@ static int devm_backlight_device_match(struct device *dev, void *res,
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}
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/**
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+ * backlight_register_notifier - get notified of backlight (un)registration
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+ * @nb: notifier block with the notifier to call on backlight (un)registration
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+ *
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+ * @return 0 on success, otherwise a negative error code
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+ *
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+ * Register a notifier to get notified when backlight devices get registered
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+ * or unregistered.
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+ */
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+int backlight_register_notifier(struct notifier_block *nb)
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+{
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+ return blocking_notifier_chain_register(&backlight_notifier, nb);
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+}
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+EXPORT_SYMBOL(backlight_register_notifier);
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+
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+/**
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+ * backlight_unregister_notifier - unregister a backlight notifier
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+ * @nb: notifier block to unregister
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+ *
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+ * @return 0 on success, otherwise a negative error code
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+ *
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+ * Register a notifier to get notified when backlight devices get registered
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+ * or unregistered.
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+ */
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+int backlight_unregister_notifier(struct notifier_block *nb)
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+{
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+ return blocking_notifier_chain_unregister(&backlight_notifier, nb);
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+}
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+EXPORT_SYMBOL(backlight_unregister_notifier);
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+
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+/**
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* devm_backlight_device_register - resource managed backlight_device_register()
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* @dev: the device to register
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* @name: the name of the device
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@@ -544,6 +582,8 @@ static int __init backlight_class_init(void)
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backlight_class->pm = &backlight_class_dev_pm_ops;
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INIT_LIST_HEAD(&backlight_dev_list);
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mutex_init(&backlight_dev_list_mutex);
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+ BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier);
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+
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return 0;
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}
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diff --git a/include/linux/backlight.h b/include/linux/backlight.h
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index 72647429adf6..adb14a8616df 100644
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--- a/include/linux/backlight.h
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+++ b/include/linux/backlight.h
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@@ -40,6 +40,11 @@ enum backlight_type {
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BACKLIGHT_TYPE_MAX,
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};
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+enum backlight_notification {
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+ BACKLIGHT_REGISTERED,
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+ BACKLIGHT_UNREGISTERED,
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|
+};
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+
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struct backlight_device;
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struct fb_info;
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@@ -133,6 +138,8 @@ extern void devm_backlight_device_unregister(struct device *dev,
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extern void backlight_force_update(struct backlight_device *bd,
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enum backlight_update_reason reason);
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extern bool backlight_device_registered(enum backlight_type type);
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+extern int backlight_register_notifier(struct notifier_block *nb);
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+extern int backlight_unregister_notifier(struct notifier_block *nb);
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#define to_backlight_device(obj) container_of(obj, struct backlight_device, dev)
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--
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1.9.0
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@ -653,7 +653,10 @@ Patch26006: acpi-video-Don-t-register-acpi_video_resume-notifier.patch
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Patch26007: acpi-video-Add-an-acpi_video_unregister_backlight-fu.patch
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Patch26007: acpi-video-Add-an-acpi_video_unregister_backlight-fu.patch
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Patch26008: acer-wmi-Switch-to-acpi_video_unregister_backlight.patch
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Patch26008: acer-wmi-Switch-to-acpi_video_unregister_backlight.patch
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Patch26009: acer-wmi-Add-Aspire-5741-to-video_vendor_dmi_table.patch
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Patch26009: acer-wmi-Add-Aspire-5741-to-video_vendor_dmi_table.patch
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Patch26010: nouveau-Don-t-check-acpi_video_backlight_support-bef.patch
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Patch26011: backlight-Add-backlight-device-un-registration-notif.patch
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Patch26012: acpi-video-Unregister-the-backlight-device-if-a-raw-.patch
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Patch26013: acpi-video-Add-use-native-backlight-quirk-for-the-Th.patch
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# END OF PATCH DEFINITIONS
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# END OF PATCH DEFINITIONS
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%endif
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%endif
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@ -1383,6 +1386,10 @@ ApplyPatch acpi-video-Don-t-register-acpi_video_resume-notifier.patch
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ApplyPatch acpi-video-Add-an-acpi_video_unregister_backlight-fu.patch
|
ApplyPatch acpi-video-Add-an-acpi_video_unregister_backlight-fu.patch
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ApplyPatch acer-wmi-Switch-to-acpi_video_unregister_backlight.patch
|
ApplyPatch acer-wmi-Switch-to-acpi_video_unregister_backlight.patch
|
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ApplyPatch acer-wmi-Add-Aspire-5741-to-video_vendor_dmi_table.patch
|
ApplyPatch acer-wmi-Add-Aspire-5741-to-video_vendor_dmi_table.patch
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ApplyPatch nouveau-Don-t-check-acpi_video_backlight_support-bef.patch
|
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|
ApplyPatch backlight-Add-backlight-device-un-registration-notif.patch
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ApplyPatch acpi-video-Unregister-the-backlight-device-if-a-raw-.patch
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||||||
|
ApplyPatch acpi-video-Add-use-native-backlight-quirk-for-the-Th.patch
|
||||||
|
|
||||||
# END OF PATCH APPLICATIONS
|
# END OF PATCH APPLICATIONS
|
||||||
|
|
||||||
|
|||||||
79
nouveau-Don-t-check-acpi_video_backlight_support-bef.patch
Normal file
79
nouveau-Don-t-check-acpi_video_backlight_support-bef.patch
Normal file
@ -0,0 +1,79 @@
|
|||||||
|
Bugzilla: 1093171
|
||||||
|
Upstream-status: Queued for 3.16
|
||||||
|
|
||||||
|
From abf17f7885656ccc181a608d2a9ee770b23d9e23 Mon Sep 17 00:00:00 2001
|
||||||
|
From: Hans de Goede <hdegoede@redhat.com>
|
||||||
|
Date: Mon, 2 Jun 2014 17:41:07 +0200
|
||||||
|
Subject: [PATCH 10/14] nouveau: Don't check acpi_video_backlight_support()
|
||||||
|
before registering backlight
|
||||||
|
|
||||||
|
acpi_video_backlight_support() is supposed to be called by other (vendor
|
||||||
|
specific) firmware backlight controls, not by native / raw backlight controls
|
||||||
|
like nv_backlight.
|
||||||
|
|
||||||
|
Userspace will normally prefer firmware interfaces over raw interfaces, so
|
||||||
|
if acpi_video backlight support is present it will use that even if
|
||||||
|
nv_backlight is registered as well.
|
||||||
|
|
||||||
|
Except when video.use_native_backlight is present on the kernel cmdline
|
||||||
|
(or enabled through a dmi based quirk). As the name indicates the goal here
|
||||||
|
is to make only the raw interface available to userspace so that it will use
|
||||||
|
that (it only does this when it sees a win8 compliant bios).
|
||||||
|
|
||||||
|
This is done by:
|
||||||
|
1) Not registering any acpi_video# backlight devices; and
|
||||||
|
2) Making acpi_video_backlight_support() return true so that other firmware
|
||||||
|
drivers, ie acer_wmi, thinkpad_acpi, dell_laptop, etc. Don't register their
|
||||||
|
own vender specific interfaces.
|
||||||
|
|
||||||
|
Currently nouveau breaks this setup, as when acpi_video_backlight_support()
|
||||||
|
returns true, it does not register itself, resulting in no backlight control
|
||||||
|
at all.
|
||||||
|
|
||||||
|
This is esp. going to be a problem with 3.16 which will default to
|
||||||
|
video.use_native_backlight=1, and thus nouveau based laptops with a win8 bios
|
||||||
|
will get no backlight control at all.
|
||||||
|
|
||||||
|
This also likely explains why the previous attempt to make
|
||||||
|
video.use_native_backlight=1 the default was not a success, as without this
|
||||||
|
patch having a default of video.use_native_backlight=1 will cause regressions.
|
||||||
|
|
||||||
|
Note this effectively reverts commit 5bead799
|
||||||
|
|
||||||
|
Also see: https://bugzilla.redhat.com/show_bug.cgi?id=1093171
|
||||||
|
|
||||||
|
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
|
||||||
|
---
|
||||||
|
drivers/gpu/drm/nouveau/nouveau_backlight.c | 9 ---------
|
||||||
|
1 file changed, 9 deletions(-)
|
||||||
|
|
||||||
|
diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/nouveau/nouveau_backlight.c
|
||||||
|
index 630f6e84fc01..2c1e4aad7da3 100644
|
||||||
|
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
|
||||||
|
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
|
||||||
|
@@ -31,7 +31,6 @@
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/backlight.h>
|
||||||
|
-#include <linux/acpi.h>
|
||||||
|
|
||||||
|
#include "nouveau_drm.h"
|
||||||
|
#include "nouveau_reg.h"
|
||||||
|
@@ -222,14 +221,6 @@ nouveau_backlight_init(struct drm_device *dev)
|
||||||
|
struct nouveau_device *device = nv_device(drm->device);
|
||||||
|
struct drm_connector *connector;
|
||||||
|
|
||||||
|
-#ifdef CONFIG_ACPI
|
||||||
|
- if (acpi_video_backlight_support()) {
|
||||||
|
- NV_INFO(drm, "ACPI backlight interface available, "
|
||||||
|
- "not registering our own\n");
|
||||||
|
- return 0;
|
||||||
|
- }
|
||||||
|
-#endif
|
||||||
|
-
|
||||||
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
||||||
|
if (connector->connector_type != DRM_MODE_CONNECTOR_LVDS &&
|
||||||
|
connector->connector_type != DRM_MODE_CONNECTOR_eDP)
|
||||||
|
--
|
||||||
|
1.9.0
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user