5043291e1a
With real DP over Type-C sinks, DP driver requests access to USB combo PHY from USB driver. But in DP SIM mode, there is no real sink and PD management, so the combo PHY is managed by USB driver and DP driver uses it without actually claiming it. If the USB cable is unplugged in this scenario, USB driver notifies the disconnection through an atomic notifier call. It does not expect the handler to go into sleep, but the disconnect handler inside DP driver has multiple wait for events and also sleeps to wait for HW state updates. This change passes a skip_wait flag to all the disable functions to complete disconnect processing by skipping all processor sleeps and event waits. Change-Id: Ia98de0e7fa6b0573e644615ee59015914a93f4cf Signed-off-by: Rajkumar Subbiah <quic_rsubbia@quicinc.com>
77 行
1.8 KiB
C
77 行
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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* Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.
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*/
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#ifndef _DP_AUDIO_H_
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#define _DP_AUDIO_H_
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#include <linux/platform_device.h>
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#include "dp_panel.h"
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#include "dp_catalog.h"
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/**
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* struct dp_audio
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* @lane_count: number of lanes configured in current session
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* @bw_code: link rate's bandwidth code for current session
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* @tui_active: set to true if TUI is active in the system
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*/
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struct dp_audio {
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u32 lane_count;
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u32 bw_code;
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bool tui_active;
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/**
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* on()
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*
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* Notifies user mode clients that DP is powered on, and that audio
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* playback can start on the external display.
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*
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* @dp_audio: an instance of struct dp_audio.
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*
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* Returns the error code in case of failure, 0 in success case.
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*/
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int (*on)(struct dp_audio *dp_audio);
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/**
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* off()
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*
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* Notifies user mode clients that DP is shutting down, and audio
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* playback should be stopped on the external display.
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*
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* @dp_audio: an instance of struct dp_audio.
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* @skip_wait: flag to skip any waits
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*
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* Returns the error code in case of failure, 0 in success case.
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*/
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int (*off)(struct dp_audio *dp_audio, bool skip_wait);
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};
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/**
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* dp_audio_get()
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*
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* Creates and instance of dp audio.
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*
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* @pdev: caller's platform device instance.
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* @panel: an instance of dp_panel module.
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* @catalog: an instance of dp_catalog_audio module.
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*
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* Returns the error code in case of failure, otherwize
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* an instance of newly created dp_module.
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*/
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struct dp_audio *dp_audio_get(struct platform_device *pdev,
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struct dp_panel *panel,
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struct dp_catalog_audio *catalog);
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/**
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* dp_audio_put()
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*
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* Cleans the dp_audio instance.
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*
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* @dp_audio: an instance of dp_audio.
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*/
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void dp_audio_put(struct dp_audio *dp_audio);
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#endif /* _DP_AUDIO_H_ */
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