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| author | Sandor Yu <Sandor.yu@nxp.com> | 2023-08-04 14:11:45 +0800 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-08-04 10:31:41 +0200 |
| commit | 6db96c7703edd6e37da8ca571dfe5e1ecb6010c1 (patch) | |
| tree | b3b128dde22074c8c00e6127bee00508845180e7 | |
| parent | b0e9267d4ccce9be9217337f4bc364ca24cf7f73 (diff) | |
| download | linux-stable-6db96c7703edd6e37da8ca571dfe5e1ecb6010c1.tar.gz linux-stable-6db96c7703edd6e37da8ca571dfe5e1ecb6010c1.tar.bz2 linux-stable-6db96c7703edd6e37da8ca571dfe5e1ecb6010c1.zip | |
drm: bridge: dw_hdmi: Fix ELD is not updated issue
The ELD (EDID-Like Data) is not updated when the HDMI cable
is plugged into different HDMI monitors.
This is because the EDID is not updated in the HDMI HPD function.
As a result, the ELD data remains unchanged and may not reflect
the capabilities of the newly connected HDMI sink device.
To address this issue, the handle_plugged_change function should move to
the bridge_atomic_enable and bridge_atomic_disable functions.
Make sure the EDID is properly updated before updating ELD.
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230804061145.2824843-1-Sandor.yu@nxp.com
| -rw-r--r-- | drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c index b23214b0c496..6c1d79474505 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c @@ -2449,15 +2449,7 @@ static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi) enum drm_connector_status result; result = hdmi->phy.ops->read_hpd(hdmi, hdmi->phy.data); - - mutex_lock(&hdmi->mutex); - if (result != hdmi->last_connector_result) { - dev_dbg(hdmi->dev, "read_hpd result: %d", result); - handle_plugged_change(hdmi, - result == connector_status_connected); - hdmi->last_connector_result = result; - } - mutex_unlock(&hdmi->mutex); + hdmi->last_connector_result = result; return result; } @@ -2958,6 +2950,7 @@ static void dw_hdmi_bridge_atomic_disable(struct drm_bridge *bridge, hdmi->curr_conn = NULL; dw_hdmi_update_power(hdmi); dw_hdmi_update_phy_mask(hdmi); + handle_plugged_change(hdmi, false); mutex_unlock(&hdmi->mutex); } @@ -2976,6 +2969,7 @@ static void dw_hdmi_bridge_atomic_enable(struct drm_bridge *bridge, hdmi->curr_conn = connector; dw_hdmi_update_power(hdmi); dw_hdmi_update_phy_mask(hdmi); + handle_plugged_change(hdmi, true); mutex_unlock(&hdmi->mutex); } |