diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-1169-drm-vc4-Set-TV-margins-on-the-composite-connector-st.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-1169-drm-vc4-Set-TV-margins-on-the-composite-connector-st.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-1169-drm-vc4-Set-TV-margins-on-the-composite-connector-st.patch b/target/linux/bcm27xx/patches-6.1/950-1169-drm-vc4-Set-TV-margins-on-the-composite-connector-st.patch new file mode 100644 index 0000000000..05da5d38c5 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-1169-drm-vc4-Set-TV-margins-on-the-composite-connector-st.patch @@ -0,0 +1,47 @@ +From bc76ab2e772242d0d92d38b2a5648485ee1a1b44 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Michael=20B=C3=BCchler?= <michael.buechler@posteo.net> +Date: Sun, 19 Nov 2023 01:22:20 +0100 +Subject: [PATCH] drm/vc4: Set TV margins on the composite connector state +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The Raspberry Pi bootloader can pass a set of margin values to the +kernel cmdline as part of the video= option. These should result in +black borders on the output to compensate for TVs where the visible area +on the screen is smaller than the full extents of the video image. + +With the VC4 driver this currently works on an HDMI connector, but not +on a composite video connector. + +The TV margins from the kernel cmdline are available in the +drm_cmdline_mode structure of the composite video connector. Apply them +to the connector state in the connector reset function. This is how it +is implemented for the VC4 HDMI connector. + +Signed-off-by: Michael Büchler <michael.buechler@posteo.net> +--- + drivers/gpu/drm/vc4/vc4_vec.c | 5 +++++ + 1 file changed, 5 insertions(+) + +--- a/drivers/gpu/drm/vc4/vc4_vec.c ++++ b/drivers/gpu/drm/vc4/vc4_vec.c +@@ -436,6 +436,9 @@ static void vc4_vec_connector_reset(stru + /* preserve TV standard */ + if (connector->state) + connector->state->tv.mode = vc4_vec_get_default_mode(connector); ++ ++ /* apply TV margins from the cmdline_mode */ ++ drm_atomic_helper_connector_tv_reset(connector); + } + + static int vc4_vec_connector_atomic_check(struct drm_connector *conn, +@@ -483,6 +486,8 @@ static int vc4_vec_connector_init(struct + + drm_connector_helper_add(connector, &vc4_vec_connector_helper_funcs); + ++ drm_connector_attach_tv_margin_properties(connector); ++ + drm_object_attach_property(&connector->base, + dev->mode_config.tv_mode_property, + vc4_vec_get_default_mode(connector)); |