From 0cb751164376faec5386f3c4daf1db82ac00c32c Mon Sep 17 00:00:00 2001
From: Miika Pekkarinen <miipekk@ihme.org>
Date: Mon, 20 Jun 2005 18:28:05 +0000
Subject: [PATCH] Backlight dimming is now flicker free on all situations.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6781 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/backlight.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/firmware/backlight.c b/firmware/backlight.c
index e169209717..507f252e6d 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -82,6 +82,9 @@ void backlight_start_timer(void)
     if (bl_timer_active)
         return ;
         
+    /* Prevent cpu frequency changes while dimming. */
+    cpu_boost(true);
+    
     count = 1;
     bl_timer_active = true;
 
@@ -152,6 +155,7 @@ void TIMER1(void)
 
     if (idle) 
     {
+        cpu_boost(false);
         bl_timer_active = false;
         TMR1 = 0;
     }
@@ -173,6 +177,7 @@ void backlight_allow_timer(bool on)
 
     if (!timer_allowed && bl_timer_active)
     {
+        cpu_boost(false);
         bl_dim_current = bl_dim_target;
         bl_timer_active = false;
         TMR1 = 0;