video: fbdev: rivafb: unlock chip before probiding EDID

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@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/fbdev/riva/fbdev.c b/drivers/video/fbdev/riva/fbdev.c
index f1ad2747064bf9c70f410d99e552efa3a513c54c..2ef26ad99341359afe3bc95e13625bf917969f4f 100644 (file)
--- 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)