Douglas Anderson 47be928dc2 drm/msm/dp: Delete the old 500 ms wait for eDP HPD in aux transfer ... Before the introduction of the wait_hpd_asserted() callback in commit 841d742f09 ("drm/dp: Add wait_hpd_asserted() callback to struct drm_dp_aux") the API between panel drivers and DP AUX bus drivers was that it was up to the AUX bus driver to wait for HPD in the transfer() function. Now wait_hpd_asserted() has been added. The two panel drivers that are DP AUX endpoints use it. See commit 2327b13d6c ("drm/panel-edp: Take advantage of wait_hpd_asserted() in struct drm_dp_aux") and commit 3b5765df37 ("drm/panel: atna33xc20: Take advantage of wait_hpd_asserted() in struct drm_dp_aux"). We've implemented wait_hpd_asserted() in the MSM DP driver as of commit e2969ee302 ("drm/msm/dp: move of_dp_aux_populate_bus() to eDP probe()"). There is no longer any reason for long wait in the AUX transfer() function. Remove it. NOTE: the wait_hpd_asserted() is listed as "optional". That means it's optional for the DP AUX bus to implement. In the case of the MSM DP driver we implement it so we can assume it will be called. ALSO NOTE: the wait wasn't actually _hurting_ anything and wasn't even causing long timeouts, but it's still nice to get rid of unneeded code. Specificaly it's not truly needed because to handle other DP drivers that can't power on as quickly (specifically parade-ps8640) we already avoid DP AUX transfers for eDP panels that aren't powered on. See commit 8df1ddb5bf ("drm/dp: Don't attempt AUX transfers when eDP panels are not powered"). Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Patchwork: https://patchwork.freedesktop.org/patch/583130/ Link: https://lore.kernel.org/r/20240315143621.v2.3.I535606f6d4f7e3e5588bb75c55996f61980183cd@changeid Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>		2024-04-22 16:22:16 +03:00
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drm	drm/msm/dp: Delete the old 500 ms wait for eDP HPD in aux transfer	2024-04-22 16:22:16 +03:00
host1x	drm for 6.9:	2024-03-13 18:34:05 -07:00
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