/*
 * File: HdaCodecInfo.h
 *
 * Copyright (c) 2018 John Davis
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef _EFI_HDA_CODEC_INFO_H_
#define _EFI_HDA_CODEC_INFO_H_

#include <Uefi.h>

// HDA Codec Info protocol GUID.
#define EFI_HDA_CODEC_INFO_PROTOCOL_GUID { \
    0x6C9CDDE1, 0xE8A5, 0x43E5, { 0xBE, 0x88, 0xDA, 0x15, 0xBC, 0x1C, 0x02, 0x50 } \
}
extern EFI_GUID gEfiHdaCodecInfoProtocolGuid;
typedef struct _EFI_HDA_CODEC_INFO_PROTOCOL EFI_HDA_CODEC_INFO_PROTOCOL;

// Widget structure.
typedef struct {
    UINT8 NodeId;

    // General widgets.
    UINT32 Capabilities;
    UINT8 DefaultUnSol;
    UINT8 DefaultEapd;

    // Connections.
    UINT32 ConnectionListLength;
    UINT16 *Connections;

    // Power.
    UINT32 SupportedPowerStates;
    UINT32 DefaultPowerState;

    // Amps.
    UINT32 AmpInCapabilities;
    UINT32 AmpOutCapabilities;
    UINT8 *AmpInLeftDefaultGainMute;
    UINT8 *AmpInRightDefaultGainMute;
    UINT8 AmpOutLeftDefaultGainMute;
    UINT8 AmpOutRightDefaultGainMute;

    // Input/Output.
    UINT32 SupportedPcmRates;
    UINT32 SupportedFormats;
    UINT16 DefaultConvFormat;
    UINT8 DefaultConvStreamChannel;
    UINT8 DefaultConvChannelCount;

    // Pin Complex.
    UINT32 PinCapabilities;
    UINT8 DefaultPinControl;
    UINT32 DefaultConfiguration;

    // Volume Knob.
    UINT32 VolumeCapabilities;
    UINT8 DefaultVolume;
} HDA_WIDGET;

/**
  Gets the codec's name.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] CodecName         A pointer to the buffer to return the codec name.

  @retval EFI_SUCCESS           The codec name was retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_NAME)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT CHAR16 **CodecName);

/**
  Gets the codec's vendor and device ID.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] VendorId          The vendor and device ID of the codec.

  @retval EFI_SUCCESS           The vendor and device ID was retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_VENDOR_ID)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT UINT32 *VendorId);

/**
  Gets the codec's revision ID.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] RevisionId        The revision ID of the codec.

  @retval EFI_SUCCESS           The revision ID was retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_REVISION_ID)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT UINT32 *RevisionId);

/**
  Gets the node ID of the codec's audio function.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] AudioFuncId       The node ID of the codec's audio function.
  @param[out] UnsolCapable      Whether or not the function supports unsolicitation.

  @retval EFI_SUCCESS           The node ID was retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_AUDIO_FUNC_ID)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT UINT8 *AudioFuncId,
    OUT BOOLEAN *UnsolCapable);

/**
  Gets the codec's default supported stream rates and formats.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] Rates             The default supported rates.
  @param[out] Formats           The default supported formats.

  @retval EFI_SUCCESS           The stream rates and formats were retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_DEFAULT_RATES_FORMATS)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT UINT32 *Rates,
    OUT UINT32 *Formats);

/**
  Gets the codec's default amp capabilities.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] AmpInCaps         The default input amp capabilities.
  @param[out] AmpOutCaps        The default output amp capabilities.

  @retval EFI_SUCCESS           The default amp capabilities were retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_DEFAULT_AMP_CAPS)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT UINT32 *AmpInCaps,
    OUT UINT32 *AmpOutCaps);

/**
  Gets the codec's widgets.

  @param[in]  This              A pointer to the EFI_HDA_CODEC_INFO_PROTOCOL instance.
  @param[out] Widgets           A pointer to the buffer to return the requested array of widgets.
  @param[out] WidgetCount       The number of widgets returned in Widgets.

  @retval EFI_SUCCESS           The widgets were retrieved.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_GET_WIDGETS)(
    IN  EFI_HDA_CODEC_INFO_PROTOCOL *This,
    OUT HDA_WIDGET **Widgets,
    OUT UINTN *WidgetCount);

/**
  Frees an array of HDA_WIDGET.

  @param[in] Widgets            A pointer to the buffer array of widgets that is to be freed.
  @param[in] WidgetCount        The number of widgets in Widgets.

  @retval EFI_SUCCESS           The buffer was freed.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_HDA_CODEC_INFO_FREE_WIDGETS_BUFFER)(
    IN  HDA_WIDGET *Widgets,
    IN  UINTN WidgetCount);

// Protocol struct.
struct _EFI_HDA_CODEC_INFO_PROTOCOL {
    EFI_HDA_CODEC_INFO_GET_NAME                     GetName;
    EFI_HDA_CODEC_INFO_GET_VENDOR_ID                GetVendorId;
    EFI_HDA_CODEC_INFO_GET_REVISION_ID              GetRevisionId;
    EFI_HDA_CODEC_INFO_GET_AUDIO_FUNC_ID            GetAudioFuncId;
    EFI_HDA_CODEC_INFO_GET_DEFAULT_RATES_FORMATS    GetDefaultRatesFormats;
    EFI_HDA_CODEC_INFO_GET_DEFAULT_AMP_CAPS         GetDefaultAmpCaps;
    EFI_HDA_CODEC_INFO_GET_WIDGETS                  GetWidgets;
    EFI_HDA_CODEC_INFO_FREE_WIDGETS_BUFFER          FreeWidgetsBuffer;
};

#endif