64 lines
1.8 KiB
Diff
64 lines
1.8 KiB
Diff
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from: https://patchwork.kernel.org/project/linux-mediatek/patch/20210720100553.2340425-1-pihsun@chromium.org/
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[v2] drm/bridge: anx7625: Use pm_runtime_force_{suspend, resume}
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diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
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index 14d73fb1dd15..8325e8d0ee19 100644
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--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
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+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
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@@ -1349,6 +1349,8 @@ static void anx7625_bridge_detach(struct drm_bridge *bridge)
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mipi_dsi_detach(ctx->dsi);
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mipi_dsi_device_unregister(ctx->dsi);
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}
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+ if (ctx->link)
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+ device_link_del(ctx->link);
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}
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static int anx7625_bridge_attach(struct drm_bridge *bridge,
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@@ -1373,17 +1375,33 @@ static int anx7625_bridge_attach(struct drm_bridge *bridge,
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return err;
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}
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+ ctx->link = device_link_add(bridge->dev->dev, dev, DL_FLAG_STATELESS);
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+ if (!ctx->link) {
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+ DRM_DEV_ERROR(dev, "device link creation failed");
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+ err = -EINVAL;
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+ goto detach_dsi;
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+ }
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+
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if (ctx->pdata.panel_bridge) {
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err = drm_bridge_attach(bridge->encoder,
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ctx->pdata.panel_bridge,
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&ctx->bridge, flags);
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if (err)
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- return err;
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+ goto remove_device_link;
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}
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ctx->bridge_attached = 1;
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return 0;
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+
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+remove_device_link:
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+ device_link_del(ctx->link);
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+detach_dsi:
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+ if (ctx->dsi) {
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+ mipi_dsi_detach(ctx->dsi);
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+ mipi_dsi_device_unregister(ctx->dsi);
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+ }
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+ return err;
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}
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static enum drm_mode_status
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diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h
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index edbbfe410a56..299e62df6238 100644
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--- a/drivers/gpu/drm/bridge/analogix/anx7625.h
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+++ b/drivers/gpu/drm/bridge/analogix/anx7625.h
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@@ -473,6 +473,7 @@ struct anx7625_data {
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struct drm_connector *connector;
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struct mipi_dsi_device *dsi;
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struct drm_dp_aux aux;
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+ struct device_link *link;
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};
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#endif /* __ANX7625_H__ */
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