1 files changed, 34 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0647-drm-modes-Don-t-apply-cmdline-s-rotation-if-it-wasn-.patch b/target/linux/bcm27xx/patches-4.19/950-0647-drm-modes-Don-t-apply-cmdline-s-rotation-if-it-wasn-.patch
new file mode 100644
index 0000000000..b97d018799
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0647-drm-modes-Don-t-apply-cmdline-s-rotation-if-it-wasn-.patch
@@ -0,0 +1,34 @@
+From 6eb9a89c28590203658c0ebcbf29d5b41eb8596a Mon Sep 17 00:00:00 2001
+From: Dave Stevenson <dave.stevenson@raspberrypi.org>
+Date: Tue, 23 Jul 2019 14:10:31 +0100
+Subject: [PATCH] drm/modes: Don't apply cmdline's rotation if it
+ wasn't specified
+
+Taken from the dri-devel mailing list (11/7/2019) to fixup the cmdline
+parsing, but requires changes as things have moved between 4.19 and 5.2.
+
+From: Dmitry Osipenko <digetx@gmail.com>
+
+The rotation mode from cmdline shouldn't be taken into account if it
+wasn't specified in the cmdline. This fixes ignored default display
+orientation when display mode is given using cmdline without the
+rotation being specified.
+
+Fixes: 1bf4e09227c3 ("drm/modes: Allow to specify rotation and reflection on the commandline")
+Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
+Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
+---
+ drivers/gpu/drm/drm_fb_helper.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/drm_fb_helper.c
++++ b/drivers/gpu/drm/drm_fb_helper.c
+@@ -2502,7 +2502,7 @@ static void drm_setup_crtc_rotation(stru
+ 	 * simple XOR between the two handle the addition nicely.
+ 	 */
+ 	cmdline = &connector->cmdline_mode;
+-	if (cmdline->specified) {
++	if (cmdline->specified && cmdline->rotation_reflection) {
+ 		unsigned int cmdline_rest, panel_rest;
+ 		unsigned int cmdline_rot, panel_rot;
+ 		unsigned int sum_rot, sum_rest;