drm: bridge: dw-hdmi: Report connector status using callback
authorCheng-Yi Chiang <cychiang@chromium.org>
Mon, 28 Oct 2019 07:19:25 +0000 (15:19 +0800)
committerMark Brown <broonie@kernel.org>
Tue, 29 Oct 2019 12:30:22 +0000 (12:30 +0000)
commita9c82d63ca4819d3d03964dbf4aa427b36c5a67f
treeef071bf38c240d667b2df7eaa7e95bc6fad0448d
parentc3ad1092e1069f27d0ca110dcaada8a5435ea3e0
drm: bridge: dw-hdmi: Report connector status using callback

Allow codec driver register callback function for plug event.

The callback registration flow:
dw-hdmi <--- hw-hdmi-i2s-audio <--- hdmi-codec

dw-hdmi-i2s-audio implements hook_plugged_cb op
so codec driver can register the callback.

dw-hdmi exports a function dw_hdmi_set_plugged_cb so platform device
can register the callback.

When connector plug/unplug event happens, report this event using the
callback.

Make sure that audio and drm are using the single source of truth for
connector status.

Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
Link: https://lore.kernel.org/r/20191028071930.145899-2-cychiang@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
include/drm/bridge/dw_hdmi.h