From: Peter Clifton <pcjc2@cam.ac.uk>
To: Intel <intel-gfx@lists.freedesktop.org>
Subject: Patch to fix backlight on GM45
Date: Fri, 28 Jan 2011 22:13:08 +0000 [thread overview]
Message-ID: <1296252789.2154.9.camel@localhost> (raw)
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Without this, querying the backlight value returns half of the value it
has been set to. Hilarity ensues, as my user-space likes to query first
before incrementing / decrementing brightness, leading to brightness
collapsing to near as I try to adjust.
--
Peter Clifton
Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA
Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
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From db647ad5ff5ce80e1a515411db7e4c6587c7e798 Mon Sep 17 00:00:00 2001
From: Peter Clifton <pcjc2@cam.ac.uk>
Date: Fri, 28 Jan 2011 22:08:40 +0000
Subject: [PATCH] drm/intel: Fix brightness value query when in combination mode
---
drivers/gpu/drm/i915/intel_panel.c | 1 -
1 files changed, 0 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 4ab4239..1795823 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -208,7 +208,6 @@ u32 intel_panel_get_backlight(struct drm_device *dev)
val &= ~1;
pci_read_config_byte(dev->pdev, PCI_LBPC, &lbpc);
val *= lbpc;
- val >>= 1;
}
}
--
1.7.2.3
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next reply other threads:[~2011-01-28 22:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-28 22:13 Peter Clifton [this message]
2011-01-30 20:50 ` Patch to fix backlight on GM45 Niccolò Belli
2011-02-01 20:17 ` Niccolò Belli
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