From: Alexey Starikovskiy <astarikovskiy@suse.de>
To: Thomas Tuttle <linux-kernel@ttuttle.net>,
linux-acpi@vger.kernel.org, lenb@kernel.org
Subject: [PATCH 2/2] ACPI: VIDEO: Adjust current level to closest available one.
Date: Mon, 03 Sep 2007 16:30:08 +0400 [thread overview]
Message-ID: <20070903123008.20082.80704.stgit@z61m> (raw)
In-Reply-To: <20070903122958.20082.6843.stgit@z61m>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
---
drivers/acpi/video.c | 13 ++++++++++++-
1 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 83aa41c..8a60a3d 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1636,9 +1636,20 @@ static int
acpi_video_get_next_level(struct acpi_video_device *device,
u32 level_current, u32 event)
{
- int min, max, min_above, max_below, i, l;
+ int min, max, min_above, max_below, i, l, delta = 255;
max = max_below = 0;
min = min_above = 255;
+ /* Find closest level to level_current */
+ for (i = 0; i < device->brightness->count; i++) {
+ l = device->brightness->levels[i];
+ if (abs(l - level_current) < abs(delta)) {
+ delta = l - level_current;
+ if (!delta)
+ break;
+ }
+ }
+ /* Ajust level_current to closest available level */
+ level_current += delta;
for (i = 0; i < device->brightness->count; i++) {
l = device->brightness->levels[i];
if (l < min)
next prev parent reply other threads:[~2007-09-03 12:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-03 12:29 [PATCH 1/2] [PATCH] ACPI: video: Don't call absent methods Alexey Starikovskiy
2007-09-03 12:30 ` Alexey Starikovskiy [this message]
2007-09-03 14:49 ` Len Brown
2007-09-03 15:15 ` Alexey Starikovskiy
2007-09-14 14:01 ` Ryan May
2007-10-02 13:22 ` Ryan May
2007-10-02 15:52 ` Alexey Starikovskiy
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