1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __SOUND_PCM_DRM_ELD_H 3 #define __SOUND_PCM_DRM_ELD_H 4 5 enum eld_versions { 6 ELD_VER_CEA_861D = 2, 7 ELD_VER_PARTIAL = 31, 8 }; 9 10 enum cea_audio_coding_types { 11 AUDIO_CODING_TYPE_REF_STREAM_HEADER = 0, 12 AUDIO_CODING_TYPE_LPCM = 1, 13 AUDIO_CODING_TYPE_AC3 = 2, 14 AUDIO_CODING_TYPE_MPEG1 = 3, 15 AUDIO_CODING_TYPE_MP3 = 4, 16 AUDIO_CODING_TYPE_MPEG2 = 5, 17 AUDIO_CODING_TYPE_AACLC = 6, 18 AUDIO_CODING_TYPE_DTS = 7, 19 AUDIO_CODING_TYPE_ATRAC = 8, 20 AUDIO_CODING_TYPE_SACD = 9, 21 AUDIO_CODING_TYPE_EAC3 = 10, 22 AUDIO_CODING_TYPE_DTS_HD = 11, 23 AUDIO_CODING_TYPE_MLP = 12, 24 AUDIO_CODING_TYPE_DST = 13, 25 AUDIO_CODING_TYPE_WMAPRO = 14, 26 AUDIO_CODING_TYPE_REF_CXT = 15, 27 /* also include valid xtypes below */ 28 AUDIO_CODING_TYPE_HE_AAC = 15, 29 AUDIO_CODING_TYPE_HE_AAC2 = 16, 30 AUDIO_CODING_TYPE_MPEG_SURROUND = 17, 31 }; 32 33 enum cea_audio_coding_xtypes { 34 AUDIO_CODING_XTYPE_HE_REF_CT = 0, 35 AUDIO_CODING_XTYPE_HE_AAC = 1, 36 AUDIO_CODING_XTYPE_HE_AAC2 = 2, 37 AUDIO_CODING_XTYPE_MPEG_SURROUND = 3, 38 AUDIO_CODING_XTYPE_FIRST_RESERVED = 4, 39 }; 40 41 /* 42 * CEA Short Audio Descriptor data 43 */ 44 struct snd_cea_sad { 45 int channels; 46 int format; /* (format == 0) indicates invalid SAD */ 47 int rates; 48 int sample_bits; /* for LPCM */ 49 int max_bitrate; /* for AC3...ATRAC */ 50 int profile; /* for WMAPRO */ 51 }; 52 53 #define ELD_FIXED_BYTES 20 54 #define ELD_MAX_SIZE 256 55 #define ELD_MAX_MNL 16 56 #define ELD_MAX_SAD 16 57 58 #define ELD_PCM_BITS_8 BIT(0) 59 #define ELD_PCM_BITS_16 BIT(1) 60 #define ELD_PCM_BITS_20 BIT(2) 61 #define ELD_PCM_BITS_24 BIT(3) 62 #define ELD_PCM_BITS_32 BIT(4) 63 64 /* 65 * ELD: EDID Like Data 66 */ 67 struct snd_parsed_hdmi_eld { 68 /* 69 * all fields will be cleared before updating ELD 70 */ 71 int baseline_len; 72 int eld_ver; 73 int cea_edid_ver; 74 char monitor_name[ELD_MAX_MNL + 1]; 75 int manufacture_id; 76 int product_id; 77 u64 port_id; 78 int support_hdcp; 79 int support_ai; 80 int conn_type; 81 int aud_synch_delay; 82 int spk_alloc; 83 int sad_count; 84 struct snd_cea_sad sad[ELD_MAX_SAD]; 85 }; 86 87 int snd_pcm_hw_constraint_eld(struct snd_pcm_runtime *runtime, void *eld); 88 89 int snd_parse_eld(struct device *dev, struct snd_parsed_hdmi_eld *e, 90 const unsigned char *buf, int size); 91 void snd_show_eld(struct device *dev, struct snd_parsed_hdmi_eld *e); 92 93 #ifdef CONFIG_SND_PROC_FS 94 void snd_print_eld_info(struct snd_parsed_hdmi_eld *eld, 95 struct snd_info_buffer *buffer); 96 #endif 97 98 #endif 99