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/* 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
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