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authorRichard Purdie <rpurdie@rpsys.net>2007-03-03 17:43:52 +0000
committerRichard Purdie <rpurdie@rpsys.net>2007-03-05 08:49:38 +0000
commit202d4e602555e68c2bc71775228876b0356785c8 (patch)
treee47c4013016e21a231b9d2873a2d75aa2750c5fe /drivers/video/riva
parent238576e12fef1d52751c6e08db2d0bdb0e248caf (diff)
downloadlinux-202d4e602555e68c2bc71775228876b0356785c8.tar.gz
backlight: Allow enable/disable of fb backlights, fixing regressions
Enabling the backlight by default appears to cause problems for many users. This patch disables backlight controls unless explicitly enabled by users via a module parameter. Since PMAC users are known to work, default to enabled in that case. Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'drivers/video/riva')
-rw-r--r--drivers/video/riva/fbdev.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c
index f8a3d608b20..1d1c7c624d7 100644
--- a/drivers/video/riva/fbdev.c
+++ b/drivers/video/riva/fbdev.c
@@ -215,6 +215,11 @@ static int noaccel __devinitdata = 0;
#ifdef CONFIG_MTRR
static int nomtrr __devinitdata = 0;
#endif
+#ifdef CONFIG_PMAC_BACKLIGHT
+static int backlight __devinitdata = 1;
+#else
+static int backlight __devinitdata = 0;
+#endif
static char *mode_option __devinitdata = NULL;
static int strictmode = 0;
@@ -2059,7 +2064,10 @@ static int __devinit rivafb_probe(struct pci_dev *pd,
info->monspecs.modedb = NULL;
pci_set_drvdata(pd, info);
- riva_bl_init(info->par);
+
+ if (backlight)
+ riva_bl_init(info->par);
+
ret = register_framebuffer(info);
if (ret < 0) {
printk(KERN_ERR PFX
@@ -2157,6 +2165,8 @@ static int __init rivafb_setup(char *options)
forceCRTC = -1;
} else if (!strncmp(this_opt, "flatpanel", 9)) {
flatpanel = 1;
+ } else if (!strncmp(this_opt, "backlight:", 10)) {
+ backlight = simple_strtoul(this_opt+10, NULL, 0);
#ifdef CONFIG_MTRR
} else if (!strncmp(this_opt, "nomtrr", 6)) {
nomtrr = 1;