diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-12-09 15:54:18 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-09 08:24:38 -0800 |
| commit | f3179748a157c21d44d929fd3779421ebfbeaa93 (patch) | |
| tree | 7617077768413c830d80288b510da379ef181811 /drivers/video/aty/radeon_base.c | |
| parent | f7a8db89c1f42e504bb12d2ae399cd96f755a7db (diff) | |
radeonfb: Disable new color expand acceleration unless explicitely enabled
This new color expansion acceleration for radeonfb appears to trigger
problems with X on VT switch and suspend/resume on some machines. It
might be a problem in the VT layer or in X, but I haven't quite found
it yet, so in the meantime, this disables the acceleration by default,
reverting to 2.6.27 state. It can be enabled using the "accel_cexp"
module parameter or fbdev argument.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/aty/radeon_base.c')
| -rw-r--r-- | drivers/video/aty/radeon_base.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c index b3ffe8205d2..d5b27f9d374 100644 --- a/drivers/video/aty/radeon_base.c +++ b/drivers/video/aty/radeon_base.c @@ -282,6 +282,8 @@ static int backlight = 1; static int backlight = 0; #endif +int accel_cexp = 0; + /* * prototypes */ @@ -2520,6 +2522,8 @@ static int __init radeonfb_setup (char *options) } else if (!strncmp(this_opt, "ignore_devlist", 14)) { ignore_devlist = 1; #endif + } else if (!strncmp(this_opt, "accel_cexp", 12)) { + accel_cexp = 1; } else mode_option = this_opt; } @@ -2567,6 +2571,8 @@ module_param(monitor_layout, charp, 0); MODULE_PARM_DESC(monitor_layout, "Specify monitor mapping (like XFree86)"); module_param(force_measure_pll, bool, 0); MODULE_PARM_DESC(force_measure_pll, "Force measurement of PLL (debug)"); +module_param(accel_cexp, bool, 0); +MODULE_PARM_DESC(accel_cexp, "Use acceleration engine for color expansion"); #ifdef CONFIG_MTRR module_param(nomtrr, bool, 0); MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers"); |