/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __SOUND_PCM_DRM_ELD_H
#define __SOUND_PCM_DRM_ELD_H

enum eld_versions {
        ELD_VER_CEA_861D        = 2,
        ELD_VER_PARTIAL         = 31,
};

enum cea_audio_coding_types {
        AUDIO_CODING_TYPE_REF_STREAM_HEADER     =  0,
        AUDIO_CODING_TYPE_LPCM                  =  1,
        AUDIO_CODING_TYPE_AC3                   =  2,
        AUDIO_CODING_TYPE_MPEG1                 =  3,
        AUDIO_CODING_TYPE_MP3                   =  4,
        AUDIO_CODING_TYPE_MPEG2                 =  5,
        AUDIO_CODING_TYPE_AACLC                 =  6,
        AUDIO_CODING_TYPE_DTS                   =  7,
        AUDIO_CODING_TYPE_ATRAC                 =  8,
        AUDIO_CODING_TYPE_SACD                  =  9,
        AUDIO_CODING_TYPE_EAC3                  = 10,
        AUDIO_CODING_TYPE_DTS_HD                = 11,
        AUDIO_CODING_TYPE_MLP                   = 12,
        AUDIO_CODING_TYPE_DST                   = 13,
        AUDIO_CODING_TYPE_WMAPRO                = 14,
        AUDIO_CODING_TYPE_REF_CXT               = 15,
        /* also include valid xtypes below */
        AUDIO_CODING_TYPE_HE_AAC                = 15,
        AUDIO_CODING_TYPE_HE_AAC2               = 16,
        AUDIO_CODING_TYPE_MPEG_SURROUND         = 17,
};

enum cea_audio_coding_xtypes {
        AUDIO_CODING_XTYPE_HE_REF_CT            = 0,
        AUDIO_CODING_XTYPE_HE_AAC               = 1,
        AUDIO_CODING_XTYPE_HE_AAC2              = 2,
        AUDIO_CODING_XTYPE_MPEG_SURROUND        = 3,
        AUDIO_CODING_XTYPE_FIRST_RESERVED       = 4,
};

/*
 * CEA Short Audio Descriptor data
 */
struct snd_cea_sad {
        int     channels;
        int     format;         /* (format == 0) indicates invalid SAD */
        int     rates;
        int     sample_bits;    /* for LPCM */
        int     max_bitrate;    /* for AC3...ATRAC */
        int     profile;        /* for WMAPRO */
};

#define ELD_FIXED_BYTES 20
#define ELD_MAX_SIZE    256
#define ELD_MAX_MNL     16
#define ELD_MAX_SAD     16

#define ELD_PCM_BITS_8          BIT(0)
#define ELD_PCM_BITS_16         BIT(1)
#define ELD_PCM_BITS_20         BIT(2)
#define ELD_PCM_BITS_24         BIT(3)
#define ELD_PCM_BITS_32         BIT(4)

/*
 * ELD: EDID Like Data
 */
struct snd_parsed_hdmi_eld {
        /*
         * all fields will be cleared before updating ELD
         */
        int     baseline_len;
        int     eld_ver;
        int     cea_edid_ver;
        char    monitor_name[ELD_MAX_MNL + 1];
        int     manufacture_id;
        int     product_id;
        u64     port_id;
        int     support_hdcp;
        int     support_ai;
        int     conn_type;
        int     aud_synch_delay;
        int     spk_alloc;
        int     sad_count;
        struct snd_cea_sad sad[ELD_MAX_SAD];
};

int snd_pcm_hw_constraint_eld(struct snd_pcm_runtime *runtime, void *eld);

int snd_parse_eld(struct device *dev, struct snd_parsed_hdmi_eld *e,
                  const unsigned char *buf, int size);
void snd_show_eld(struct device *dev, struct snd_parsed_hdmi_eld *e);

#ifdef CONFIG_SND_PROC_FS
void snd_print_eld_info(struct snd_parsed_hdmi_eld *eld,
                        struct snd_info_buffer *buffer);
#endif

#endif