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Merge "soc: qcom: msm_ext_display: add header file for msm external display"
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include/linux/soc/qcom/msm_ext_display.h
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239
include/linux/soc/qcom/msm_ext_display.h
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef _MSM_EXT_DISPLAY_H_
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#define _MSM_EXT_DISPLAY_H_
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/extcon.h>
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#define AUDIO_ACK_SET_ENABLE BIT(5)
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#define AUDIO_ACK_ENABLE BIT(4)
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#define AUDIO_ACK_CONNECT BIT(0)
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#define MSM_EXT_DISP_MAX_CODECS 2
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/*
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* Flags to be used with the HPD operation of the external display
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* interface:
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* MSM_EXT_DISP_HPD_AUDIO: audio will be routed to external display
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* MSM_EXT_DISP_HPD_VIDEO: video will be routed to external display
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*/
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#define MSM_EXT_DISP_HPD_AUDIO BIT(0)
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#define MSM_EXT_DISP_HPD_VIDEO BIT(1)
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/**
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* struct ext_disp_cable_notify - cable notify handler structure
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* @link: a link for the linked list
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* @status: current status of HDMI/DP cable connection
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* @hpd_notify: callback function to provide cable status
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*/
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struct ext_disp_cable_notify {
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struct list_head link;
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int status;
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void (*hpd_notify)(struct ext_disp_cable_notify *h);
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};
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struct msm_ext_disp_audio_edid_blk {
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u8 *audio_data_blk;
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unsigned int audio_data_blk_size; /* in bytes */
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u8 *spk_alloc_data_blk;
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unsigned int spk_alloc_data_blk_size; /* in bytes */
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};
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struct msm_ext_disp_audio_setup_params {
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u32 sample_rate_hz;
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u32 num_of_channels;
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u32 channel_allocation;
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u32 level_shift;
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bool down_mix;
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u32 sample_present;
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};
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/*
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* External Display identifier for use to determine which interface
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* the audio driver is interacting with.
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*/
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enum msm_ext_disp_type {
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EXT_DISPLAY_TYPE_HDMI = EXTCON_DISP_HDMI,
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EXT_DISPLAY_TYPE_DP = EXTCON_DISP_DP,
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EXT_DISPLAY_TYPE_MAX = 0xFFFFFFFF
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};
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/*
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* External Display cable state used by display interface to indicate
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* connect/disconnect of interface.
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*/
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enum msm_ext_disp_cable_state {
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EXT_DISPLAY_CABLE_DISCONNECT,
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EXT_DISPLAY_CABLE_CONNECT,
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EXT_DISPLAY_CABLE_STATE_MAX
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};
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/**
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* External Display power state used by display interface to indicate
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* power on/off of the interface.
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*/
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enum msm_ext_disp_power_state {
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EXT_DISPLAY_POWER_OFF,
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EXT_DISPLAY_POWER_ON,
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EXT_DISPLAY_POWER_MAX
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};
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/**
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* struct msm_ext_disp_codec_id - codec information
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* @type: external display type
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* @ctrl_id: controller id
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* @stream_id: stream_id
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*/
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struct msm_ext_disp_codec_id {
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enum msm_ext_disp_type type;
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int ctrl_id;
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int stream_id;
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};
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/**
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* struct msm_ext_disp_intf_ops - operations exposed to display interface
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* @audio_config: configures the audio operations exposed to codec driver
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* @audio_notify: notifies the audio connection state to user modules.
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* @video_notify: notifies the video connection state to user modules.
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*/
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struct msm_ext_disp_intf_ops {
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int (*audio_config)(struct platform_device *pdev,
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struct msm_ext_disp_codec_id *codec,
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enum msm_ext_disp_cable_state state);
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int (*audio_notify)(struct platform_device *pdev,
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struct msm_ext_disp_codec_id *codec,
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enum msm_ext_disp_cable_state state);
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int (*video_notify)(struct platform_device *pdev,
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struct msm_ext_disp_codec_id *codec,
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enum msm_ext_disp_cable_state state);
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};
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/**
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* struct msm_ext_disp_audio_codec_ops - operations exposed to audio codec
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* @audio_info_setup: configure audio on interface
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* @get_audio_edid_blk: retrieve audio edid block
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* @cable_status: cable connected/disconnected
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* @get_intf_id: id of connected interface
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* @teardown_done: audio session teardown done by qdsp
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* @acknowledge: acknowledge audio status received by user modules
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* @ready: notify audio when codec driver is ready.
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*/
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struct msm_ext_disp_audio_codec_ops {
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int (*audio_info_setup)(struct platform_device *pdev,
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struct msm_ext_disp_audio_setup_params *params);
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int (*get_audio_edid_blk)(struct platform_device *pdev,
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struct msm_ext_disp_audio_edid_blk *blk);
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int (*cable_status)(struct platform_device *pdev, u32 vote);
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int (*get_intf_id)(struct platform_device *pdev);
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void (*teardown_done)(struct platform_device *pdev);
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int (*acknowledge)(struct platform_device *pdev, u32 ack);
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int (*ready)(struct platform_device *pdev);
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};
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/**
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* struct msm_ext_disp_init_data - data needed to register a display interface
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* @type: external display type
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* @intf_ops: external display interface operations
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* @codec_ops: audio codec operations
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* @pdev: platform device instance of the interface driver
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* @intf_data: interface specific data
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*/
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struct msm_ext_disp_init_data {
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struct msm_ext_disp_codec_id codec;
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struct msm_ext_disp_intf_ops intf_ops;
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struct msm_ext_disp_audio_codec_ops codec_ops;
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struct platform_device *pdev;
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void *intf_data;
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};
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/**
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* struct msm_ext_disp_data - data needed by interface modules
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* @intf_pdev: platform device instance of the interface
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* @intf_data: data related to interface module
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*/
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struct msm_ext_disp_data {
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struct platform_device *intf_pdev;
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void *intf_data;
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};
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#if IS_ENABLED(CONFIG_MSM_EXT_DISPLAY)
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/**
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* msm_ext_disp_register_audio_codec() - audio codec registration
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* @pdev: platform device pointer
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* @codec_ops: audio codec operations
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*/
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int msm_ext_disp_register_audio_codec(struct platform_device *pdev,
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struct msm_ext_disp_audio_codec_ops *ops);
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/**
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* msm_ext_disp_select_audio_codec() - select audio codec
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* @pdev: platform device pointer
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* @codec: codec id information
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*/
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int msm_ext_disp_select_audio_codec(struct platform_device *pdev,
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struct msm_ext_disp_codec_id *codec);
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/**
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* msm_hdmi_register_audio_codec() - wrapper for hdmi audio codec
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* registration
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* @pdev: platform device pointer
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* @codec_ops: audio codec operations
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*/
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int msm_hdmi_register_audio_codec(struct platform_device *pdev,
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struct msm_ext_disp_audio_codec_ops *ops);
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/**
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* msm_ext_disp_register_intf() - display interface registration
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* @init_data: data needed to register the display interface
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*/
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int msm_ext_disp_register_intf(struct platform_device *pdev,
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struct msm_ext_disp_init_data *init_data);
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/**
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* msm_ext_disp_deregister_intf() - display interface deregistration
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* @init_data: data needed to deregister the display interface
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*/
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int msm_ext_disp_deregister_intf(struct platform_device *pdev,
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struct msm_ext_disp_init_data *init_data);
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#else
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static inline int msm_ext_disp_register_audio_codec(
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struct platform_device *pdev,
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struct msm_ext_disp_audio_codec_ops *ops)
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{
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return 0;
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}
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static inline int msm_ext_disp_select_audio_codec(struct platform_device *pdev,
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struct msm_ext_disp_codec_id *codec)
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{
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return 0;
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}
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static inline int msm_hdmi_register_audio_codec(struct platform_device *pdev,
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struct msm_ext_disp_audio_codec_ops *ops)
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{
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return 0;
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}
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static inline int msm_ext_disp_register_intf(struct platform_device *pdev,
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struct msm_ext_disp_init_data *init_data)
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{
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return 0;
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}
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static inline int msm_ext_disp_deregister_intf(struct platform_device *pdev,
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struct msm_ext_disp_init_data *init_data)
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{
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return 0;
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}
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#endif
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#endif /*_MSM_EXT_DISPLAY_H_*/
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