On 2021-12-09 18:02:40, AngeloGioacchino Del Regno wrote: > Il 02/10/21 00:33, Dmitry Baryshkov ha scritto: > > On 11/09/2021 19:39, AngeloGioacchino Del Regno wrote: > >> [..] > > I've compared this with the MDP5 driver, where we always wait for PP_DONE > > interrupt. Would it be enough to always wait for it (= always call > > dpu_encoder_phys_cmd_wait_for_tx_complete())? > > > > Jokes apart, yes it would make sense to do that, it's something that works > at least... but we should verify that such a thing doesn't break new platforms > (like sm8150 and newer). On sm6125 (keeping in mind that we're on llvmpipe, will bring up the GPU later) none of this hurts the display: - Without this patch, so only checking for wait_for_ctl_start; - With this patch, checking for idle if it was already started; - With this patch altered to only ever call wait_for_tx_complete (wait for idle), in place of wait_for_ctl_start. Working in the sense that glxgears, which actually reports a framerate of approx 170 despite being on llvmpipe on an SoC that is still in snail-mode, seems to update (commit) the panel smoothly on every occasion. On this note, does it perhaps make more sense to call the "internal" _dpu_encoder_phys_cmd_wait_for_idle function directly, instead of going through the "public" dpu_encoder_phys_cmd_wait_for_tx_complete which seems solely intended to handle the wait_for_tx_complete callback? - Marijn
