diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0742-drm-vc4-Fix-VIC-usage-with-Broadcast-RGB.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0742-drm-vc4-Fix-VIC-usage-with-Broadcast-RGB.patch | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0742-drm-vc4-Fix-VIC-usage-with-Broadcast-RGB.patch b/target/linux/bcm27xx/patches-5.4/950-0742-drm-vc4-Fix-VIC-usage-with-Broadcast-RGB.patch new file mode 100644 index 0000000000..611e5db743 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0742-drm-vc4-Fix-VIC-usage-with-Broadcast-RGB.patch @@ -0,0 +1,58 @@ +From a90dcdf7cf7ad632f5a260758a76e406403a7e3c Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Thu, 14 May 2020 14:44:15 +0100 +Subject: [PATCH] drm/vc4: Fix VIC usage with Broadcast RGB + +Adding the Broadcast RGB range selection broke the VIC +field of the AVI infoframes on HDMI, zeroing them for all +modes on an HDMI monitor. + +Correct this so that it is only zeroed if the range is +contrary to the standard range of the mode. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/gpu/drm/vc4/vc4_firmware_kms.c | 19 ++++++++++++------- + 1 file changed, 12 insertions(+), 7 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c ++++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c +@@ -936,19 +936,14 @@ static void vc4_crtc_mode_set_nofb(struc + break; + } + ++ mb.timings.video_id_code = frame.avi.video_code; ++ + if (!vc4_encoder->hdmi_monitor) { + mb.timings.flags |= TIMINGS_FLAGS_DVI; +- mb.timings.video_id_code = frame.avi.video_code; + } else { + struct vc4_fkms_connector_state *conn_state = + to_vc4_fkms_connector_state(vc4_crtc->connector->state); + +- /* Do not provide a VIC as the HDMI spec requires that we do not +- * signal the opposite of the defined range in the AVI +- * infoframe. +- */ +- mb.timings.video_id_code = 0; +- + if (conn_state->broadcast_rgb == VC4_BROADCAST_RGB_AUTO) { + /* See CEA-861-E - 5.1 Default Encoding Parameters */ + if (drm_default_rgb_quant_range(mode) == +@@ -958,6 +953,16 @@ static void vc4_crtc_mode_set_nofb(struc + if (conn_state->broadcast_rgb == + VC4_BROADCAST_RGB_LIMITED) + mb.timings.flags |= TIMINGS_FLAGS_RGB_LIMITED; ++ ++ /* If not using the default range, then do not provide ++ * a VIC as the HDMI spec requires that we do not ++ * signal the opposite of the defined range in the AVI ++ * infoframe. ++ */ ++ if (!!(mb.timings.flags & TIMINGS_FLAGS_RGB_LIMITED) != ++ (drm_default_rgb_quant_range(mode) == ++ HDMI_QUANTIZATION_RANGE_LIMITED)) ++ mb.timings.video_id_code = 0; + } + } + |