From: Thierry Reding <thierry.reding@avionic-design.de>
Date: Thu, 22 Nov 2012 19:37:17 +0000 (+0000)
Subject: drm: tegra: Use framebuffer pitch as line stride
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=ac8f7c4894bea3ae1af31e78fea31b1ba3347834;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

drm: tegra: Use framebuffer pitch as line stride

Instead of using the stride derived from the display mode, use the pitch
associated with the currently active framebuffer. This fixes a bug where
the LCD display content would be skewed when enabling HDMI with a video
mode different from that of the LCD.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Mark Zhang <markz@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 53b98520ebd6..54f05d887dce 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -218,7 +218,7 @@ static int tegra_crtc_mode_set(struct drm_crtc *crtc,
 	}
 
 	bpp = crtc->fb->bits_per_pixel / 8;
-	win.stride = win.outw * bpp;
+	win.stride = crtc->fb->pitches[0];
 
 	/* program window registers */
 	value = tegra_dc_readl(dc, DC_CMD_DISPLAY_WINDOW_HEADER);