From: Vasiliy Ulyanov <v.ulyanov@samsung.com>
Date: Thu, 29 Jan 2015 10:10:17 +0000 (+0300)
Subject: VIGS: workaround for qHD (540x960) video mode
X-Git-Tag: TizenStudio_2.0_p2.3~38
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55147f5fc6d723f203146a49d933aa01621ce36a;p=sdk%2Femulator%2Femulator-kernel.git

VIGS: workaround for qHD (540x960) video mode

Horizontal resolution was rounded up to 544 (GTF algorithm). It was
causing wrong rendering on emulator (black screen).

Change-Id: I71668858cb31f0c87231c876cdb184dc70798326
Signed-off-by: Vasiliy Ulyanov <v.ulyanov@samsung.com>
---

diff --git a/drivers/gpu/drm/vigs/vigs_output.c b/drivers/gpu/drm/vigs/vigs_output.c
index fffcb709da82..77b83b14166a 100644
--- a/drivers/gpu/drm/vigs/vigs_output.c
+++ b/drivers/gpu/drm/vigs/vigs_output.c
@@ -101,7 +101,16 @@ static int vigs_connector_get_modes(struct drm_connector *connector)
             struct drm_display_mode *preferred_mode =
                 drm_mode_create_from_cmdline_mode(drm_dev,
                                                   &cmdline_mode);
+
+            /* qHD workaround (540x960) */
+            if (cmdline_mode.xres == 540 && cmdline_mode.yres == 960) {
+                preferred_mode->hdisplay = cmdline_mode.xres;
+                preferred_mode->hsync_start = preferred_mode->hsync_start - 1;
+                preferred_mode->hsync_end = preferred_mode->hsync_end - 1;
+            }
+
             preferred_mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
+            drm_mode_set_crtcinfo(preferred_mode, CRTC_INTERLACE_HALVE_V);
             drm_mode_probed_add(connector, preferred_mode);
             return 1;
         }