This is a note to let you know that I've just added the patch titled
DRM/i915: Add QUIRK_INVERT_BRIGHTNESS for NCR machines.
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-add-quirk_invert_brightness-for-ncr-machines.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From bd2f21ebab93af5cc4eb2aaff409aa938dcca11b Mon Sep 17 00:00:00 2001
From: Egbert Eich <[email protected]>
Date: Sun, 14 Oct 2012 15:46:38 +0200
Subject: DRM/i915: Add QUIRK_INVERT_BRIGHTNESS for NCR machines.
From: Egbert Eich <[email protected]>
commit 5f85f176c2f1c9d2a23f60ca0b99e4d0aa5a26a7 upstream.
NCR machines with LVDS panels using Intel chipsets need to have the
QUIRK_INVERT_BRIGHTNESS bit set.
Unfortunately NCR doesn't set a meaningful subvendor/subdevice ID,
therefore we add a DMI dependent quirk list.
Signed-off-by: Egbert Eich <[email protected]>
[danvet: fixup whitespace fail.]
Signed-off-by: Daniel Vetter <[email protected]>
Acked-by: Jani Nikula <[email protected]>
[bwh: Backported to 3.2:
- Adjust context
- Add #include <linux/dmi.h>]
Signed-off-by: Ben Hutchings <[email protected]>
Cc: Weng Meiling <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/intel_display.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -25,6 +25,7 @@
*/
#include <linux/cpufreq.h>
+#include <linux/dmi.h>
#include <linux/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
@@ -9217,6 +9218,34 @@ struct intel_quirk {
void (*hook)(struct drm_device *dev);
};
+/* For systems that don't have a meaningful PCI subdevice/subvendor ID */
+struct intel_dmi_quirk {
+ void (*hook)(struct drm_device *dev);
+ const struct dmi_system_id (*dmi_id_list)[];
+};
+
+static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
+{
+ DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
+ return 1;
+}
+
+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+ {
+ .dmi_id_list = &(const struct dmi_system_id[]) {
+ {
+ .callback = intel_dmi_reverse_brightness,
+ .ident = "NCR Corporation",
+ .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR
Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, ""),
+ },
+ },
+ { } /* terminating entry */
+ },
+ .hook = quirk_invert_brightness,
+ },
+};
+
struct intel_quirk intel_quirks[] = {
/* HP Mini needs pipe A force quirk (LP: #322104) */
{ 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
@@ -9276,6 +9305,10 @@ static void intel_init_quirks(struct drm
q->subsystem_device == PCI_ANY_ID))
q->hook(dev);
}
+ for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
+ if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
+ intel_dmi_quirks[i].hook(dev);
+ }
}
/* Disable the VGA plane that we never use */
Patches currently in stable-queue which might be from [email protected] are
queue-3.4/drm-i915-add-quirk_invert_brightness-for-ncr-machines.patch
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