From: Christoffer Dall <christoffer.dall@linaro.org>
Date: Tue, 3 Jul 2018 15:43:09 +0000 (+0200)
Subject: video: fbdev: Set pixclock = 0 in goldfishfb
X-Git-Tag: v4.14.110~105
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6f90688633d5d3f992cae1c00bcaac272350f1dc;p=thirdparty%2Fkernel%2Fstable.git

video: fbdev: Set pixclock = 0 in goldfishfb

[ Upstream commit ace6033ec5c356615eaa3582fb1946e9eaff6662 ]

User space Android code identifies pixclock == 0 as a sign for emulation
and will set the frame rate to 60 fps when reading this value, which is
the desired outcome.

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Roman Kiryanov <rkir@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/video/fbdev/goldfishfb.c b/drivers/video/fbdev/goldfishfb.c
index 14a93cb213100..66d58e93bc322 100644
--- a/drivers/video/fbdev/goldfishfb.c
+++ b/drivers/video/fbdev/goldfishfb.c
@@ -234,7 +234,7 @@ static int goldfish_fb_probe(struct platform_device *pdev)
 	fb->fb.var.activate	= FB_ACTIVATE_NOW;
 	fb->fb.var.height	= readl(fb->reg_base + FB_GET_PHYS_HEIGHT);
 	fb->fb.var.width	= readl(fb->reg_base + FB_GET_PHYS_WIDTH);
-	fb->fb.var.pixclock	= 10000;
+	fb->fb.var.pixclock	= 0;
 
 	fb->fb.var.red.offset = 11;
 	fb->fb.var.red.length = 5;