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drm: bridge: dw-hdmi: Report connector status using callback

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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>
This commit is contained in:
Cheng-Yi Chiang
2019-10-28 15:19:25 +08:00
committed by Mark Brown
parent c3ad1092e1
commit a9c82d63ca
3 changed files with 55 additions and 1 deletions
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4
include/drm/bridge/dw_hdmi.h
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@@ -6,6 +6,8 @@
#ifndef __DW_HDMI__
#define __DW_HDMI__
#include <sound/hdmi-codec.h>
struct drm_connector;
struct drm_display_mode;
struct drm_encoder;
@@ -154,6 +156,8 @@ void dw_hdmi_resume(struct dw_hdmi *hdmi);
void dw_hdmi_setup_rx_sense(struct dw_hdmi *hdmi, bool hpd, bool rx_sense);
int dw_hdmi_set_plugged_cb(struct dw_hdmi *hdmi, hdmi_codec_plugged_cb fn,
struct device *codec_dev);
void dw_hdmi_set_sample_rate(struct dw_hdmi *hdmi, unsigned int rate);
void dw_hdmi_set_channel_count(struct dw_hdmi *hdmi, unsigned int cnt);
void dw_hdmi_set_channel_allocation(struct dw_hdmi *hdmi, unsigned int ca);