From: Rob Clark <robdclark@xxxxxxxxxxxx>
Slightly awkward to fish out the display_info when we aren't creating
own connector. But I don't see an obvious better way.
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 34 +++++++++++++++++++++++----
1 file changed, 29 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 38dcc49eccaf..dc8112bab3d3 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -693,9 +693,11 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge,
return ret;
}
- ret = ti_sn_bridge_connector_init(pdata);
- if (ret < 0)
- goto err_conn_init;
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
+ ret = ti_sn_bridge_connector_init(pdata);
+ if (ret < 0)
+ goto err_conn_init;
+ }
/*
* TODO: ideally finding host resource and dsi dev registration needs
@@ -757,7 +759,8 @@ static int ti_sn_bridge_attach(struct drm_bridge *bridge,
err_dsi_attach:
mipi_dsi_device_unregister(dsi);
err_dsi_host:
- drm_connector_cleanup(&pdata->connector);
+ if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
+ drm_connector_cleanup(&pdata->connector);
err_conn_init:
drm_dp_aux_unregister(&pdata->aux);
return ret;
@@ -806,9 +809,30 @@ static void ti_sn_bridge_set_dsi_rate(struct ti_sn65dsi86 *pdata)
regmap_write(pdata->regmap, SN_DSIA_CLK_FREQ_REG, val);
}
+/*
+ * Find the connector and fish out the bpc from display_info. It would
+ * be nice if we could get this instead from drm_bridge_state, but that
+ * doesn't yet appear to be the case.
+ */
static unsigned int ti_sn_bridge_get_bpp(struct ti_sn65dsi86 *pdata)
{
- if (pdata->connector.display_info.bpc <= 6)
+ struct drm_bridge *bridge = &pdata->bridge;
+ struct drm_connector_list_iter conn_iter;
+ struct drm_connector *connector;
+ unsigned bpc = 0;
+
+ drm_connector_list_iter_begin(bridge->dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
+ if (drm_connector_has_possible_encoder(connector, bridge->encoder)) {
+ bpc = connector->display_info.bpc;
+ break;
+ }
+ }
+ drm_connector_list_iter_end(&conn_iter);
+
+ WARN_ON(bpc == 0);
+
+ if (bpc <= 6)
return 18;
else
return 24;
--
2.31.1
