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| author | Maxim Schwalm <maxim.schwalm@gmail.com> | 2023-06-18 11:50:45 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2023-07-27 19:41:59 +0300 |
| commit | 829912ebdf47978f396d3added6fd215c36e2bd3 (patch) | |
| tree | 4cb5a9de7e8511ac03195ab4af9d5145800b1d93 /drivers | |
| parent | 62fa0a985e2c99f716688e6bfbc37338a283a301 (diff) | |
| download | linux-829912ebdf47978f396d3added6fd215c36e2bd3.tar.xz | |
drm/tegra: output: hdmi: Support bridge/connector
Some Tegra device-trees may specify a video output graph, which involves
MHL bridge/simple bridge and/or connector framework. This patch adds
support for the bridge/connector attached to the HDMI output, allowing
us to model the hardware properly.
Inspired by: 29efdc2 ("drm/tegra: output: rgb: Support LVDS encoder bridge")
Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # ASUS TF T30
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # ASUS P1801-T T30
Tested-by: Robert Eckelmann <longnoserob@gmail.com> # ASUS TF101 T20
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # ASUS TF201 T30
Signed-off-by: Maxim Schwalm <maxim.schwalm@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230618085046.10081-2-clamor95@gmail.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/tegra/hdmi.c | 44 |
1 files changed, 33 insertions, 11 deletions
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 00be307ca070..549a15639a5e 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -20,6 +20,7 @@ #include <soc/tegra/common.h> #include <sound/hdmi-codec.h> +#include <drm/drm_bridge_connector.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc.h> #include <drm/drm_debugfs.h> @@ -1545,26 +1546,47 @@ static int tegra_hdmi_init(struct host1x_client *client) { struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client); struct drm_device *drm = dev_get_drvdata(client->host); + struct drm_connector *connector; int err; hdmi->output.dev = client->dev; - drm_connector_init_with_ddc(drm, &hdmi->output.connector, - &tegra_hdmi_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA, - hdmi->output.ddc); - drm_connector_helper_add(&hdmi->output.connector, - &tegra_hdmi_connector_helper_funcs); - hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF; - drm_simple_encoder_init(drm, &hdmi->output.encoder, DRM_MODE_ENCODER_TMDS); drm_encoder_helper_add(&hdmi->output.encoder, &tegra_hdmi_encoder_helper_funcs); - drm_connector_attach_encoder(&hdmi->output.connector, - &hdmi->output.encoder); - drm_connector_register(&hdmi->output.connector); + if (hdmi->output.bridge) { + err = drm_bridge_attach(&hdmi->output.encoder, hdmi->output.bridge, + NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (err) { + dev_err(client->dev, "failed to attach bridge: %d\n", + err); + return err; + } + + connector = drm_bridge_connector_init(drm, &hdmi->output.encoder); + if (IS_ERR(connector)) { + dev_err(client->dev, + "failed to initialize bridge connector: %pe\n", + connector); + return PTR_ERR(connector); + } + + drm_connector_attach_encoder(connector, &hdmi->output.encoder); + } else { + drm_connector_init_with_ddc(drm, &hdmi->output.connector, + &tegra_hdmi_connector_funcs, + DRM_MODE_CONNECTOR_HDMIA, + hdmi->output.ddc); + drm_connector_helper_add(&hdmi->output.connector, + &tegra_hdmi_connector_helper_funcs); + hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF; + + drm_connector_attach_encoder(&hdmi->output.connector, + &hdmi->output.encoder); + drm_connector_register(&hdmi->output.connector); + } err = tegra_output_init(drm, &hdmi->output); if (err < 0) { |