redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

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>
wifi-calibration
Benjamin Herrenschmidt 2008-12-09 15:54:18 +11:00 committed by Linus Torvalds
parent f7a8db89c1
commit f3179748a1
3 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/video/aty/radeon_accel.c
View File

@ -256,7 +256,8 @@ void radeonfb_imageblit(struct fb_info *info, const struct fb_image *image)
return;
/* We only do 1 bpp color expansion for now */
if (info->flags & FBINFO_HWACCEL_DISABLED || image->depth != 1)
if (!accel_cexp ||
(info->flags & FBINFO_HWACCEL_DISABLED) || image->depth != 1)
goto fallback;
/* Fallback if running out of the screen. We may do clipping

6
drivers/video/aty/radeon_base.c
View File

@ -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");

2
drivers/video/aty/radeonfb.h
View File

@ -638,4 +638,6 @@ static inline void radeonfb_bl_init(struct radeonfb_info *rinfo) {}
static inline void radeonfb_bl_exit(struct radeonfb_info *rinfo) {}
#endif
extern int accel_cexp;
#endif /* __RADEONFB_H__ */