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1b0e9d7f76
Other HDMI-related cards (e.g. hdmi-codec) are also using the ELD. Exrtact common set of interfaces for handling the ELD. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20250124-alsa-hdmi-codec-eld-v1-1-bad045cfaeac@linaro.org
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __SOUND_PCM_DRM_ELD_H
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#define __SOUND_PCM_DRM_ELD_H
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enum eld_versions {
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ELD_VER_CEA_861D = 2,
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ELD_VER_PARTIAL = 31,
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};
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enum cea_audio_coding_types {
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AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0,
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AUDIO_CODING_TYPE_LPCM = 1,
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AUDIO_CODING_TYPE_AC3 = 2,
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AUDIO_CODING_TYPE_MPEG1 = 3,
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AUDIO_CODING_TYPE_MP3 = 4,
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AUDIO_CODING_TYPE_MPEG2 = 5,
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AUDIO_CODING_TYPE_AACLC = 6,
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AUDIO_CODING_TYPE_DTS = 7,
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AUDIO_CODING_TYPE_ATRAC = 8,
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AUDIO_CODING_TYPE_SACD = 9,
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AUDIO_CODING_TYPE_EAC3 = 10,
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AUDIO_CODING_TYPE_DTS_HD = 11,
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AUDIO_CODING_TYPE_MLP = 12,
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AUDIO_CODING_TYPE_DST = 13,
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AUDIO_CODING_TYPE_WMAPRO = 14,
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AUDIO_CODING_TYPE_REF_CXT = 15,
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/* also include valid xtypes below */
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AUDIO_CODING_TYPE_HE_AAC = 15,
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AUDIO_CODING_TYPE_HE_AAC2 = 16,
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AUDIO_CODING_TYPE_MPEG_SURROUND = 17,
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};
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enum cea_audio_coding_xtypes {
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AUDIO_CODING_XTYPE_HE_REF_CT = 0,
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AUDIO_CODING_XTYPE_HE_AAC = 1,
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AUDIO_CODING_XTYPE_HE_AAC2 = 2,
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AUDIO_CODING_XTYPE_MPEG_SURROUND = 3,
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AUDIO_CODING_XTYPE_FIRST_RESERVED = 4,
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};
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/*
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* CEA Short Audio Descriptor data
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*/
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struct snd_cea_sad {
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int channels;
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int format; /* (format == 0) indicates invalid SAD */
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int rates;
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int sample_bits; /* for LPCM */
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int max_bitrate; /* for AC3...ATRAC */
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int profile; /* for WMAPRO */
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};
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#define ELD_FIXED_BYTES 20
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#define ELD_MAX_SIZE 256
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#define ELD_MAX_MNL 16
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#define ELD_MAX_SAD 16
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#define ELD_PCM_BITS_8 BIT(0)
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#define ELD_PCM_BITS_16 BIT(1)
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#define ELD_PCM_BITS_20 BIT(2)
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#define ELD_PCM_BITS_24 BIT(3)
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#define ELD_PCM_BITS_32 BIT(4)
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/*
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* ELD: EDID Like Data
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*/
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struct snd_parsed_hdmi_eld {
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/*
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* all fields will be cleared before updating ELD
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*/
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int baseline_len;
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int eld_ver;
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int cea_edid_ver;
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char monitor_name[ELD_MAX_MNL + 1];
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int manufacture_id;
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int product_id;
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u64 port_id;
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int support_hdcp;
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int support_ai;
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int conn_type;
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int aud_synch_delay;
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int spk_alloc;
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int sad_count;
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struct snd_cea_sad sad[ELD_MAX_SAD];
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};
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int snd_pcm_hw_constraint_eld(struct snd_pcm_runtime *runtime, void *eld);
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int snd_parse_eld(struct device *dev, struct snd_parsed_hdmi_eld *e,
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const unsigned char *buf, int size);
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void snd_show_eld(struct device *dev, struct snd_parsed_hdmi_eld *e);
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#ifdef CONFIG_SND_PROC_FS
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void snd_print_eld_info(struct snd_parsed_hdmi_eld *eld,
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struct snd_info_buffer *buffer);
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#endif
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#endif
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