linux-kernel - [PATCH 5.15 106/913] drm/simpledrm: Add "panel orientation" property on non-upright mounted LCD panels

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Message-Id: <20220405070343.003742732@linuxfoundation.org>
Date:   Tue,  5 Apr 2022 09:19:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Javier Martinez Canillas <javierm@...hat.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH 5.15 106/913] drm/simpledrm: Add "panel orientation" property on non-upright mounted LCD panels

From: Hans de Goede <hdegoede@...hat.com>

commit 94fa115f7b28a3f02611499175e134f0a823b686 upstream.

Some devices use e.g. a portrait panel in a standard laptop casing made
for landscape panels. efifb calls drm_get_panel_orientation_quirk() and
sets fb_info.fbcon_rotate_hint to make fbcon rotate the console so that
it shows up-right instead of on its side.

When switching to simpledrm the fbcon renders on its side. Call the
drm_connector_set_panel_orientation_with_quirk() helper to add
a "panel orientation" property on devices listed in the quirk table,
to make the fbcon (and aware userspace apps) rotate the image to
display properly.

Cc: Javier Martinez Canillas <javierm@...hat.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
Acked-by: Thomas Zimmermann <tzimmermann@...e.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220221220045.11958-1-hdegoede@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/tiny/simpledrm.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/tiny/simpledrm.c
+++ b/drivers/gpu/drm/tiny/simpledrm.c
@@ -779,6 +779,9 @@ static int simpledrm_device_init_modeset
 	if (ret)
 		return ret;
 	drm_connector_helper_add(connector, &simpledrm_connector_helper_funcs);
+	drm_connector_set_panel_orientation_with_quirk(connector,
+						       DRM_MODE_PANEL_ORIENTATION_UNKNOWN,
+						       mode->hdisplay, mode->vdisplay);
 
 	formats = simpledrm_device_formats(sdev, &nformats);