OMAPDSS: modify get/find functions to go through the device chain
In the future will have arbitrarily long video pipeline chains, instead of the current two-entities-per-pipeline model. This patch changes the affected get/find style functions so that they properly go through the video pipeline chain, for example when getting the overlay manager connected to a given display. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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@ -422,7 +422,19 @@ static void wait_pending_extra_info_updates(void)
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static struct omap_dss_device *dss_mgr_get_device(struct omap_overlay_manager *mgr)
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{
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return mgr->output ? mgr->output->device : NULL;
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struct omap_dss_device *dssdev;
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dssdev = mgr->output;
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if (dssdev == NULL)
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return NULL;
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while (dssdev->device)
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dssdev = dssdev->device;
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if (dssdev->driver)
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return dssdev;
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else
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return NULL;
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}
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static struct omap_dss_device *dss_ovl_get_device(struct omap_overlay *ovl)
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@ -146,7 +146,13 @@ EXPORT_SYMBOL(omap_dss_find_output_by_node);
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struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
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{
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return omap_dss_get_device(dssdev->output);
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while (dssdev->output)
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dssdev = dssdev->output;
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if (dssdev->id != 0)
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return omap_dss_get_device(dssdev);
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return NULL;
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}
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EXPORT_SYMBOL(omapdss_find_output_from_display);
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