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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-12-01 13:13:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-01 19:55:24 -0800
commitc4c6fa9891f3d1bcaae4f39fb751d5302965b566 (patch)
tree14952fe84b15a0ebdd1f38ce9e1c8cf237eb6369 /drivers/video/aty/radeon_base.c
parentb93c35ff39d19f20c47c06c206986afefecc777a (diff)
radeonfb: fix problem with color expansion & alignment
The engine on some radeon variants locks up if color expansion is called for non aligned source data. This patch enables a feature of the core fbdev to request aligned input pixmaps and uses the HW clipping engine to clip the output to the requested size Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11875 Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: James Cloos <cloos@jhcloos.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: "David S. Miller" <davem@davemloft.net> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 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.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/aty/radeon_base.c b/drivers/video/aty/radeon_base.c
index 9a5821c65eb..b3ffe8205d2 100644
--- a/drivers/video/aty/radeon_base.c
+++ b/drivers/video/aty/radeon_base.c
@@ -1875,6 +1875,7 @@ static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
info->fbops = &radeonfb_ops;
info->screen_base = rinfo->fb_base;
info->screen_size = rinfo->mapped_vram;
+
/* Fill fix common fields */
strlcpy(info->fix.id, rinfo->name, sizeof(info->fix.id));
info->fix.smem_start = rinfo->fb_base_phys;
@@ -1889,8 +1890,25 @@ static int __devinit radeon_set_fbinfo (struct radeonfb_info *rinfo)
info->fix.mmio_len = RADEON_REGSIZE;
info->fix.accel = FB_ACCEL_ATI_RADEON;
+ /* Allocate colormap */
fb_alloc_cmap(&info->cmap, 256, 0);
+ /* Setup pixmap used for acceleration */
+#define PIXMAP_SIZE (2048 * 4)
+
+ info->pixmap.addr = kmalloc(PIXMAP_SIZE, GFP_KERNEL);
+ if (!info->pixmap.addr) {
+ printk(KERN_ERR "radeonfb: Failed to allocate pixmap !\n");
+ noaccel = 1;
+ goto bail;
+ }
+ info->pixmap.size = PIXMAP_SIZE;
+ info->pixmap.flags = FB_PIXMAP_SYSTEM;
+ info->pixmap.scan_align = 4;
+ info->pixmap.buf_align = 4;
+ info->pixmap.access_align = 32;
+
+bail:
if (noaccel)
info->flags |= FBINFO_HWACCEL_DISABLED;