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Subject[PATCH 4.0 63/72] drm/radeon: only mark audio as connected if the monitor supports it (v3)
Date
4.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Deucher <alexander.deucher@amd.com>

commit 0f55db36d49d45b80eff0c0a2a498766016f458b upstream.

Otherwise the driver may try and send audio which may confuse the
monitor.

v2: set pin to NULL if no audio
v3: avoid crash with analog encoders

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/radeon/radeon_audio.c | 27 +++++++++++++++------------
drivers/gpu/drm/radeon/radeon_connectors.c | 8 ++++++--
2 files changed, 21 insertions(+), 14 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon_audio.c
+++ b/drivers/gpu/drm/radeon/radeon_audio.c
@@ -460,30 +460,33 @@ void radeon_audio_detect(struct drm_conn
if (!connector || !connector->encoder)
return;

+ if (!radeon_encoder_is_digital(connector->encoder))
+ return;
+
rdev = connector->encoder->dev->dev_private;
radeon_encoder = to_radeon_encoder(connector->encoder);
dig = radeon_encoder->enc_priv;

- if (status == connector_status_connected) {
- struct radeon_connector *radeon_connector;
- int sink_type;
-
- if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
- radeon_encoder->audio = NULL;
- return;
- }
+ if (!dig->afmt)
+ return;

- radeon_connector = to_radeon_connector(connector);
- sink_type = radeon_dp_getsinktype(radeon_connector);
+ if (status == connector_status_connected) {
+ struct radeon_connector *radeon_connector = to_radeon_connector(connector);

if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
- sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
+ radeon_dp_getsinktype(radeon_connector) ==
+ CONNECTOR_OBJECT_ID_DISPLAYPORT)
radeon_encoder->audio = rdev->audio.dp_funcs;
else
radeon_encoder->audio = rdev->audio.hdmi_funcs;

dig->afmt->pin = radeon_audio_get_pin(connector->encoder);
- radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
+ if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
+ radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
+ } else {
+ radeon_audio_enable(rdev, dig->afmt->pin, 0);
+ dig->afmt->pin = NULL;
+ }
} else {
radeon_audio_enable(rdev, dig->afmt->pin, 0);
dig->afmt->pin = NULL;
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1333,8 +1333,10 @@ out:
/* updated in get modes as well since we need to know if it's analog or digital */
radeon_connector_update_scratch_regs(connector, ret);

- if (radeon_audio != 0)
+ if (radeon_audio != 0) {
+ radeon_connector_get_edid(connector);
radeon_audio_detect(connector, ret);
+ }

exit:
pm_runtime_mark_last_busy(connector->dev->dev);
@@ -1659,8 +1661,10 @@ radeon_dp_detect(struct drm_connector *c

radeon_connector_update_scratch_regs(connector, ret);

- if (radeon_audio != 0)
+ if (radeon_audio != 0) {
+ radeon_connector_get_edid(connector);
radeon_audio_detect(connector, ret);
+ }

out:
pm_runtime_mark_last_busy(connector->dev->dev);



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