diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0762-vc4-cec-Restore-cec-physical-address-on-reconnect.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0762-vc4-cec-Restore-cec-physical-address-on-reconnect.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0762-vc4-cec-Restore-cec-physical-address-on-reconnect.patch b/target/linux/bcm27xx/patches-5.4/950-0762-vc4-cec-Restore-cec-physical-address-on-reconnect.patch new file mode 100644 index 0000000000..d42f61d2e4 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0762-vc4-cec-Restore-cec-physical-address-on-reconnect.patch @@ -0,0 +1,56 @@ +From 7776a876ce7a6eeda164aebacc965116821d3095 Mon Sep 17 00:00:00 2001 +From: Dom Cobley <popcornmix@gmail.com> +Date: Wed, 3 Jun 2020 12:20:19 +0100 +Subject: [PATCH] vc4: cec: Restore cec physical address on reconnect + +Currently we call cec_phys_addr_invalidate on a hotplug deassert. +That may be due to a TV power cycling, or an AVR being switched +on (and switching edid). This makes CEC unusable. + +Set it back up again on the hotplug assert. + +Signed-off-by: Dom Cobley <popcornmix@gmail.com> +--- + drivers/gpu/drm/vc4/vc4_hdmi.c | 25 +++++++++++++++++-------- + 1 file changed, 17 insertions(+), 8 deletions(-) + +--- a/drivers/gpu/drm/vc4/vc4_hdmi.c ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c +@@ -113,20 +113,29 @@ static enum drm_connector_status + vc4_hdmi_connector_detect(struct drm_connector *connector, bool force) + { + struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector); ++ bool connected = false; + + if (vc4_hdmi->hpd_gpio) { + if (gpio_get_value_cansleep(vc4_hdmi->hpd_gpio) ^ + vc4_hdmi->hpd_active_low) +- return connector_status_connected; +- cec_phys_addr_invalidate(vc4_hdmi->cec_adap); +- return connector_status_disconnected; +- } +- +- if (drm_probe_ddc(vc4_hdmi->ddc)) +- return connector_status_connected; +- ++ connected = true; ++ } else if (drm_probe_ddc(vc4_hdmi->ddc)) ++ connected = true; + if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) ++ connected = true; ++ if (connected) { ++ if (connector->status != connector_status_connected) { ++ struct edid *edid = drm_get_edid(connector, vc4_hdmi->ddc); ++ ++ if (edid) { ++ cec_s_phys_addr_from_edid(vc4_hdmi->cec_adap, edid); ++ vc4_hdmi->encoder.hdmi_monitor = drm_detect_hdmi_monitor(edid); ++ drm_connector_update_edid_property(connector, edid); ++ kfree(edid); ++ } ++ } + return connector_status_connected; ++ } + cec_phys_addr_invalidate(vc4_hdmi->cec_adap); + return connector_status_disconnected; + } |