From: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Date: Tue, 17 Nov 2015 01:38:15 +0000 (+0300)
Subject: video: fbdev: rivafb: unlock chip before probiding EDID
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=1c639baeafa5fe40e6b6e6ee99e9ddd29986fba1;p=linux-beck.git

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 f1ad2747064b..2ef26ad99341 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)