From 202d4e602555e68c2bc71775228876b0356785c8 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Sat, 3 Mar 2007 17:43:52 +0000 Subject: 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 --- drivers/video/riva/fbdev.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'drivers/video/riva') 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; -- cgit v1.2.3