dp_audio.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
 4 */
 5
 6#ifndef _DP_AUDIO_H_
 7#define _DP_AUDIO_H_
 8
 9#include <linux/platform_device.h>
10
11#include <sound/hdmi-codec.h>
12
13struct drm_bridge;
14
15/**
16 * struct msm_dp_audio
17 * @lane_count: number of lanes configured in current session
18 * @bw_code: link rate's bandwidth code for current session
19 */
20struct msm_dp_audio {
21	u32 lane_count;
22	u32 bw_code;
23};
24
25/**
26 * msm_dp_audio_get()
27 *
28 * Creates and instance of dp audio.
29 *
30 * @pdev: caller's platform device instance.
31 * @link_base: pointer to the msm_dp_link resource.
32 *
33 * Returns the error code in case of failure, otherwize
34 * an instance of newly created msm_dp_module.
35 */
36struct msm_dp_audio *msm_dp_audio_get(struct platform_device *pdev,
37			      void __iomem *link_base);
38
39/**
40 * msm_dp_audio_put()
41 *
42 * Cleans the msm_dp_audio instance.
43 *
44 * @msm_dp_audio: an instance of msm_dp_audio.
45 */
46void msm_dp_audio_put(struct msm_dp_audio *msm_dp_audio);
47
48int msm_dp_audio_prepare(struct drm_bridge *bridge,
49			 struct drm_connector *connector,
50			 struct hdmi_codec_daifmt *daifmt,
51			 struct hdmi_codec_params *params);
52void msm_dp_audio_shutdown(struct drm_bridge *bridge,
53			   struct drm_connector *connector);
54
55#endif /* _DP_AUDIO_H_ */
56
57