/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2021, The Linux Foundation. All rights reserved. */ #ifndef _MSM_EXT_DISPLAY_H_ #define _MSM_EXT_DISPLAY_H_ #include #include #include #define AUDIO_ACK_SET_ENABLE BIT(5) #define AUDIO_ACK_ENABLE BIT(4) #define AUDIO_ACK_CONNECT BIT(0) #define MSM_EXT_DISP_MAX_CODECS 2 /* * Flags to be used with the HPD operation of the external display * interface: * MSM_EXT_DISP_HPD_AUDIO: audio will be routed to external display * MSM_EXT_DISP_HPD_VIDEO: video will be routed to external display */ #define MSM_EXT_DISP_HPD_AUDIO BIT(0) #define MSM_EXT_DISP_HPD_VIDEO BIT(1) /** * struct ext_disp_cable_notify - cable notify handler structure * @link: a link for the linked list * @status: current status of HDMI/DP cable connection * @hpd_notify: callback function to provide cable status */ struct ext_disp_cable_notify { struct list_head link; int status; void (*hpd_notify)(struct ext_disp_cable_notify *h); }; struct msm_ext_disp_audio_edid_blk { u8 *audio_data_blk; unsigned int audio_data_blk_size; /* in bytes */ u8 *spk_alloc_data_blk; unsigned int spk_alloc_data_blk_size; /* in bytes */ }; struct msm_ext_disp_audio_setup_params { u32 sample_rate_hz; u32 num_of_channels; u32 channel_allocation; u32 level_shift; bool down_mix; u32 sample_present; u32 bit_width; u16 data_format; }; enum { LINEAR_PCM_DATA = 0, NON_LINEAR_DATA, LINEAR_PCM_DATA_PACKED_60958, NON_LINEAR_DATA_PACKED_60958, }; /* * External Display identifier for use to determine which interface * the audio driver is interacting with. */ enum msm_ext_disp_type { EXT_DISPLAY_TYPE_HDMI = EXTCON_DISP_HDMI, EXT_DISPLAY_TYPE_DP = EXTCON_DISP_DP, EXT_DISPLAY_TYPE_MAX = 0xFFFFFFFF }; /* * External Display cable state used by display interface to indicate * connect/disconnect of interface. */ enum msm_ext_disp_cable_state { EXT_DISPLAY_CABLE_DISCONNECT, EXT_DISPLAY_CABLE_CONNECT, EXT_DISPLAY_CABLE_STATE_MAX }; /** * External Display power state used by display interface to indicate * power on/off of the interface. */ enum msm_ext_disp_power_state { EXT_DISPLAY_POWER_OFF, EXT_DISPLAY_POWER_ON, EXT_DISPLAY_POWER_MAX }; /** * struct msm_ext_disp_codec_id - codec information * @type: external display type * @ctrl_id: controller id * @stream_id: stream_id */ struct msm_ext_disp_codec_id { enum msm_ext_disp_type type; int ctrl_id; int stream_id; }; /** * struct msm_ext_disp_intf_ops - operations exposed to display interface * @audio_config: configures the audio operations exposed to codec driver * @audio_notify: notifies the audio connection state to user modules. * @video_notify: notifies the video connection state to user modules. */ struct msm_ext_disp_intf_ops { int (*audio_config)(struct platform_device *pdev, struct msm_ext_disp_codec_id *codec, enum msm_ext_disp_cable_state state); int (*audio_notify)(struct platform_device *pdev, struct msm_ext_disp_codec_id *codec, enum msm_ext_disp_cable_state state); int (*video_notify)(struct platform_device *pdev, struct msm_ext_disp_codec_id *codec, enum msm_ext_disp_cable_state state); }; /** * struct msm_ext_disp_audio_codec_ops - operations exposed to audio codec * @audio_info_setup: configure audio on interface * @get_audio_edid_blk: retrieve audio edid block * @cable_status: cable connected/disconnected * @get_intf_id: id of connected interface * @teardown_done: audio session teardown done by qdsp * @acknowledge: acknowledge audio status received by user modules * @ready: notify audio when codec driver is ready. */ struct msm_ext_disp_audio_codec_ops { int (*audio_info_setup)(struct platform_device *pdev, struct msm_ext_disp_audio_setup_params *params); int (*get_audio_edid_blk)(struct platform_device *pdev, struct msm_ext_disp_audio_edid_blk *blk); int (*cable_status)(struct platform_device *pdev, u32 vote); int (*get_intf_id)(struct platform_device *pdev); void (*teardown_done)(struct platform_device *pdev); int (*acknowledge)(struct platform_device *pdev, u32 ack); int (*ready)(struct platform_device *pdev); }; /** * struct msm_ext_disp_init_data - data needed to register a display interface * @type: external display type * @intf_ops: external display interface operations * @codec_ops: audio codec operations * @pdev: platform device instance of the interface driver * @intf_data: interface specific data */ struct msm_ext_disp_init_data { struct msm_ext_disp_codec_id codec; struct msm_ext_disp_intf_ops intf_ops; struct msm_ext_disp_audio_codec_ops codec_ops; struct platform_device *pdev; void *intf_data; }; /** * struct msm_ext_disp_data - data needed by interface modules * @intf_pdev: platform device instance of the interface * @intf_data: data related to interface module */ struct msm_ext_disp_data { struct platform_device *intf_pdev; void *intf_data; }; #if IS_ENABLED(CONFIG_MSM_EXT_DISPLAY) /** * msm_ext_disp_register_audio_codec() - audio codec registration * @pdev: platform device pointer * @codec_ops: audio codec operations */ int msm_ext_disp_register_audio_codec(struct platform_device *pdev, struct msm_ext_disp_audio_codec_ops *ops); /** * msm_ext_disp_select_audio_codec() - select audio codec * @pdev: platform device pointer * @codec: codec id information */ int msm_ext_disp_select_audio_codec(struct platform_device *pdev, struct msm_ext_disp_codec_id *codec); /** * msm_hdmi_register_audio_codec() - wrapper for hdmi audio codec * registration * @pdev: platform device pointer * @codec_ops: audio codec operations */ int msm_hdmi_register_audio_codec(struct platform_device *pdev, struct msm_ext_disp_audio_codec_ops *ops); /** * msm_ext_disp_register_intf() - display interface registration * @init_data: data needed to register the display interface */ int msm_ext_disp_register_intf(struct platform_device *pdev, struct msm_ext_disp_init_data *init_data); /** * msm_ext_disp_deregister_intf() - display interface deregistration * @init_data: data needed to deregister the display interface */ int msm_ext_disp_deregister_intf(struct platform_device *pdev, struct msm_ext_disp_init_data *init_data); #else static inline int msm_ext_disp_register_audio_codec( struct platform_device *pdev, struct msm_ext_disp_audio_codec_ops *ops) { return 0; } static inline int msm_ext_disp_select_audio_codec(struct platform_device *pdev, struct msm_ext_disp_codec_id *codec) { return 0; } static inline int msm_hdmi_register_audio_codec(struct platform_device *pdev, struct msm_ext_disp_audio_codec_ops *ops) { return 0; } static inline int msm_ext_disp_register_intf(struct platform_device *pdev, struct msm_ext_disp_init_data *init_data) { return 0; } static inline int msm_ext_disp_deregister_intf(struct platform_device *pdev, struct msm_ext_disp_init_data *init_data) { return 0; } #endif #endif /*_MSM_EXT_DISPLAY_H_*/