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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>
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1 changed files with 5 additions and 1 deletions
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@ -314,7 +314,7 @@ static const struct zorrocl zcl_picasso4_z3 __devinitconst = {
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.type = BT_PICASSO4,
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.regoffset = 0x00600000,
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.ramsize = 4 * MB_,
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.ramoffset = 0x01000000,
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.ramoffset = 0x01000000, /* 0x02000000 for 64 MiB boards */
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};
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static const struct zorrocl zcl_picasso4_z2 __devinitconst = {
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@ -2259,6 +2259,10 @@ static int __devinit cirrusfb_zorro_register(struct zorro_dev *z,
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ramsize = zcl->ramsize;
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if (ramsize) {
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rambase = zorro_resource_start(z) + zcl->ramoffset;
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if (zorro_resource_len(z) == 64 * MB_) {
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/* Quirk for 64 MiB Picasso IV */
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rambase += zcl->ramoffset;
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}
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} else {
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struct zorro_dev *ram = zorro_find_device(zcl->ramid, NULL);
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if (!ram || !zorro_resource_len(ram)) {
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