On 05/24/2016 06:17 PM, Heiko Stuebner wrote:
Am Dienstag, 24. Mai 2016, 14:57:23 schrieb Yakir Yang: [........]diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 29c4105..d5d4e04 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -148,6 +148,10 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder, struct drm_connector_state *conn_state) { struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); + struct rockchip_dp_device *dp = to_dp(encoder); + int ret; + + s->output_type = DRM_MODE_CONNECTOR_eDP; /* * FIXME(Yakir): driver should configure the CRTC output video @@ -162,8 +166,27 @@ rockchip_dp_drm_encoder_atomic_check(struct drm_encoder *encoder, * But if I configure CTRC to RGBaaa, and eDP driver still keep * RGB666 input video mode, then screen would works prefect. */ - s->output_mode = ROCKCHIP_OUT_MODE_AAAA; - s->output_type = DRM_MODE_CONNECTOR_eDP; + + ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder); + if (ret < 0) + return;this needs a value returned (probably ret), otherwise you create a warning: ‘return’ with no value, in function returning non-void
Done, Thanks, - Yakir
drm_of_encoder_active_endpoint_id also always returns -EINVAL on rk3288- veyron-jerry because encoder->crtc is unset in drm_of_encoder_active_endpoint and that breaks display output right now. Looking through drm code it seems only two functions would set encoder->crtc - drm_atomic_helper_update_legacy_modeset_state - drm_crtc_helper_set_config drm_crtc_helper_set_config callback got dropped in the atomic-conversion and the other sounds to be somewhat in the legacy area. After that drm-internals get a bit confusing. Heiko
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