diff options
| author | Dom Cobley <popcornmix@gmail.com> | 2021-01-11 15:22:59 +0100 |
|---|---|---|
| committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2021-02-09 17:14:10 +0100 |
| commit | 4d8602b8ec16f5721a4d1339c610a81f95df1856 (patch) | |
| tree | 57c38d3eaaef374ebcfbaab601b0605bffda7b90 /drivers/gpu/drm/vc4/vc4_hdmi.c | |
| parent | 5a32bfd563e8b5766e57475c2c81c769e5a13f5d (diff) | |
| download | linux-4d8602b8ec16f5721a4d1339c610a81f95df1856.tar.bz2 | |
drm/vc4: hdmi: 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 since our controller wouldn't have a physical
address anymore.
Set it back up again on the hotplug assert.
Fixes: 15b4511a4af6 ("drm/vc4: add HDMI CEC support")
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Link: https://patchwork.freedesktop.org/patch/msgid/20210111142309.193441-6-maxime@cerno.tech
(cherry picked from commit b06eecb5158e5f3eb47b9d05aea8c259985cc5f7)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 184e1f0936c0..df2c05f2e20c 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -136,20 +136,32 @@ 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; + connected = true; + } else if (drm_probe_ddc(vc4_hdmi->ddc)) { + connected = true; + } else if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) { + connected = true; } - if (drm_probe_ddc(vc4_hdmi->ddc)) - return connector_status_connected; + 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); + kfree(edid); + } + } - if (HDMI_READ(HDMI_HOTPLUG) & VC4_HDMI_HOTPLUG_CONNECTED) return connector_status_connected; + } + cec_phys_addr_invalidate(vc4_hdmi->cec_adap); return connector_status_disconnected; } |