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sisfb: add RAM type detection for XGI Z9 

Detect the XGI Z9 RAM type as "documented" by the XGI's xgifb driver.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Aaro Koskinen 2011-02-13 22:11:26 +00:00 committed by Paul Mundt
parent 929c972e95
commit 5e8700bf6d
1 changed files with 7 additions and 1 deletions
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8
drivers/video/sis/sis_main.c
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@ -4955,7 +4955,13 @@ sisfb_post_xgi_ramtype(struct sis_video_info *ivideo)
v1 = bios[0x1d2];
}
if (!(ramtype & 0x80)) {
if (ivideo->chip == XGI_20) {
if (sisfb_xgi_is21(ivideo)) {
SiS_SetRegAND(SISCR, 0xb4, 0xfd); /* GPIO control */
SiS_SetRegOR(SISCR, 0x4a, 0x80); /* GPIOH EN */
reg = SiS_GetReg(SISCR, 0x48);
SiS_SetRegOR(SISCR, 0xb4, 0x02);
ramtype = reg & 0x01; /* GPIOH */
} else if (ivideo->chip == XGI_20) {
SiS_SetReg(SISCR, 0x97, v1);
reg = SiS_GetReg(SISCR, 0x97);
if (reg & 0x10) {