On 2013-11-25 03:06, Archit Taneja wrote: > On Monday 18 November 2013 06:20 PM, Tomi Valkeinen wrote: >> Currently when DISPC is suspended, the driver stores all DISPC registers >> to memory, so that they can be restored on resume. This is a bad way to >> handle suspend/resume, as it's prone to failures and requires somewhat >> large amount of extra space to store the registers. >> >> A better approach is to program the DISPC from scratch when resuming. >> This can be easily accomplished in apply layer by setting the manager >> and overlay infos to dirty when the manager is to be enabled. > > I guess this won't work if we wanted to support DSI command mode > displays. I.e, only shut DSS off and keep the panel up. In that case, we > would need to mark the flags dirty in dss_mgr_start_update_compat().
Hmm, true, I didn't try with DSI command mode panel. But I think it should work. The DSI driver should call mgr->enable before update, if the mgr has been off. Tomi
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