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authorGeert Uytterhoeven <geert@linux-m68k.org>2011-10-20 13:42:25 +0200
committerFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>2011-11-11 16:55:55 +0000
commite78bb882bf318bb41e17b33729cca3bdd26b42a0 (patch)
treeaebcc9a817fa7b411b3aa6b7d2e8e6aba92666e2 /drivers/video/cirrusfb.c
parent17bdf48952d3f5c0be8137058f81d398d4606820 (diff)
downloadop-kernel-dev-e78bb882bf318bb41e17b33729cca3bdd26b42a0.zip
op-kernel-dev-e78bb882bf318bb41e17b33729cca3bdd26b42a0.tar.gz
fbdev/cirrusfb: Add support for "64 MiB" version of Picasso IV
Some Village Tronic Picasso IV graphics cards identify as a 64 MiB Zorro device in Zorro III mode. While the total graphics memory size is the same on such cards, the offset of the graphics memory differs. Add a quirk to handle this. Based on src/sys/arch/amiga/dev/grf_cl.c from NetBSD. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video/cirrusfb.c')
-rw-r--r--drivers/video/cirrusfb.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/video/cirrusfb.c b/drivers/video/cirrusfb.c
index 816433f..6ea505c 100644
--- a/drivers/video/cirrusfb.c
+++ b/drivers/video/cirrusfb.c
@@ -314,7 +314,7 @@ static const struct zorrocl zcl_picasso4_z3 __devinitconst = {
.type = BT_PICASSO4,
.regoffset = 0x00600000,
.ramsize = 4 * MB_,
- .ramoffset = 0x01000000,
+ .ramoffset = 0x01000000, /* 0x02000000 for 64 MiB boards */
};
static const struct zorrocl zcl_picasso4_z2 __devinitconst = {
@@ -2259,6 +2259,10 @@ static int __devinit cirrusfb_zorro_register(struct zorro_dev *z,
ramsize = zcl->ramsize;
if (ramsize) {
rambase = zorro_resource_start(z) + zcl->ramoffset;
+ if (zorro_resource_len(z) == 64 * MB_) {
+ /* Quirk for 64 MiB Picasso IV */
+ rambase += zcl->ramoffset;
+ }
} else {
struct zorro_dev *ram = zorro_find_device(zcl->ramid, NULL);
if (!ram || !zorro_resource_len(ram)) {
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