At least NV3 requires for chip to be unlocked before it is possible to
access I2C registers. Without it, it is not possible to read EDID.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx>
---
drivers/video/fbdev/riva/fbdev.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c
index f1ad274..2ef26ad 100644
--- a/drivers/video/fbdev/riva/fbdev.c
+++ b/drivers/video/fbdev/riva/fbdev.c
@@ -1765,6 +1765,7 @@ static int riva_get_EDID_i2c(struct fb_info *info)
int i;
NVTRACE_ENTER();
+ par->riva.LockUnlock(&par->riva, 0);
riva_create_i2c_busses(par);
for (i = 0; i < 3; i++) {
if (!par->chan[i].par)
--
2.6.2
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