diff options
author | Richard Purdie <rpurdie@rpsys.net> | 2007-03-03 17:43:52 +0000 |
---|---|---|
committer | Richard Purdie <rpurdie@rpsys.net> | 2007-03-05 08:49:38 +0000 |
commit | 202d4e602555e68c2bc71775228876b0356785c8 (patch) | |
tree | e47c4013016e21a231b9d2873a2d75aa2750c5fe /drivers/video/aty | |
parent | 238576e12fef1d52751c6e08db2d0bdb0e248caf (diff) | |
download | kernel_samsung_smdk4412-202d4e602555e68c2bc71775228876b0356785c8.zip kernel_samsung_smdk4412-202d4e602555e68c2bc71775228876b0356785c8.tar.gz kernel_samsung_smdk4412-202d4e602555e68c2bc71775228876b0356785c8.tar.bz2 |
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/aty')
-rw-r--r-- | drivers/video/aty/aty128fb.c | 12 | ||||
-rw-r--r-- | drivers/video/aty/atyfb_base.c | 10 | ||||
-rw-r--r-- | drivers/video/aty/radeon_base.c | 10 |
3 files changed, 29 insertions, 3 deletions
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c index 8726c36..e86d7e0 100644 --- a/drivers/video/aty/aty128fb.c +++ b/drivers/video/aty/aty128fb.c @@ -357,6 +357,12 @@ static int default_lcd_on __devinitdata = 1; static int mtrr = 1; #endif +#ifdef CONFIG_PMAC_BACKLIGHT +static int backlight __devinitdata = 1; +#else +static int backlight __devinitdata = 0; +#endif + /* PLL constants */ struct aty128_constants { u32 ref_clk; @@ -1652,6 +1658,9 @@ static int __devinit aty128fb_setup(char *options) } else if (!strncmp(this_opt, "crt:", 4)) { default_crt_on = simple_strtoul(this_opt+4, NULL, 0); continue; + } else if (!strncmp(this_opt, "backlight:", 10)) { + backlight = simple_strtoul(this_opt+10, NULL, 0); + continue; } #ifdef CONFIG_MTRR if(!strncmp(this_opt, "nomtrr", 6)) { @@ -1985,7 +1994,8 @@ static int __devinit aty128_init(struct pci_dev *pdev, const struct pci_device_i par->lock_blank = 0; #ifdef CONFIG_FB_ATY128_BACKLIGHT - aty128_bl_init(par); + if (backlight) + aty128_bl_init(par); #endif if (register_framebuffer(info) < 0) diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c index a7e0062..00a5183 100644 --- a/drivers/video/aty/atyfb_base.c +++ b/drivers/video/aty/atyfb_base.c @@ -308,6 +308,12 @@ static int xclk; static int comp_sync __devinitdata = -1; static char *mode; +#ifdef CONFIG_PMAC_BACKLIGHT +static int backlight __devinitdata = 1; +#else +static int backlight __devinitdata = 0; +#endif + #ifdef CONFIG_PPC static int default_vmode __devinitdata = VMODE_CHOOSE; static int default_cmode __devinitdata = CMODE_CHOOSE; @@ -2575,7 +2581,7 @@ static int __devinit aty_init(struct fb_info *info) | (USE_F32KHZ | TRISTATE_MEM_EN), par); } else #endif - if (M64_HAS(MOBIL_BUS)) { + if (M64_HAS(MOBIL_BUS) && backlight) { #ifdef CONFIG_FB_ATY_BACKLIGHT aty_bl_init (par); #endif @@ -3757,6 +3763,8 @@ static int __init atyfb_setup(char *options) xclk = simple_strtoul(this_opt+5, NULL, 0); else if (!strncmp(this_opt, "comp_sync:", 10)) comp_sync = simple_strtoul(this_opt+10, NULL, 0); + else if (!strncmp(this_opt, "backlight:", 10)) + backlight = simple_strtoul(this_opt+10, NULL, 0); #ifdef CONFIG_PPC else if (!strncmp(this_opt, "vmode:", 6)) { unsigned int vmode = diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c index 46ba123..1bf6f42 100644 --- a/drivers/video/aty/radeon_base.c +++ b/drivers/video/aty/radeon_base.c @@ -268,6 +268,11 @@ static int nomtrr = 0; #endif static int force_sleep; static int ignore_devlist; +#ifdef CONFIG_PMAC_BACKLIGHT +static int backlight = 1; +#else +static int backlight = 0; +#endif /* * prototypes @@ -2348,7 +2353,8 @@ static int __devinit radeonfb_pci_register (struct pci_dev *pdev, MTRR_TYPE_WRCOMB, 1); #endif - radeonfb_bl_init(rinfo); + if (backlight) + radeonfb_bl_init(rinfo); printk ("radeonfb (%s): %s\n", pci_name(rinfo->pdev), rinfo->name); @@ -2469,6 +2475,8 @@ static int __init radeonfb_setup (char *options) force_dfp = 1; } else if (!strncmp(this_opt, "panel_yres:", 11)) { panel_yres = simple_strtoul((this_opt+11), NULL, 0); + } 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; |