1 /* 2 * Copyright (C) 2016 Intel Corporation 3 * Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com> 4 * Ramesh Babu K V <ramesh.babu@intel.com> 5 * Vaibhav Agarwal <vaibhav.agarwal@intel.com> 6 * Jerome Anand <jerome.anand@intel.com> 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining 9 * a copy of this software and associated documentation files 10 * (the "Software"), to deal in the Software without restriction, 11 * including without limitation the rights to use, copy, modify, merge, 12 * publish, distribute, sublicense, and/or sell copies of the Software, 13 * and to permit persons to whom the Software is furnished to do so, 14 * subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice (including the 17 * next paragraph) shall be included in all copies or substantial 18 * portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 23 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 24 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 25 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 26 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 27 * SOFTWARE. 28 */ 29 30 #ifndef _INTEL_HDMI_AUDIO_H_ 31 #define _INTEL_HDMI_AUDIO_H_ 32 33 #include "intel_hdmi_lpe_audio.h" 34 35 #define PCM_INDEX 0 36 #define MAX_PB_STREAMS 1 37 #define MAX_CAP_STREAMS 0 38 #define BYTES_PER_WORD 0x4 39 #define INTEL_HAD "HdmiLpeAudio" 40 41 /* 42 * CEA speaker placement: 43 * 44 * FL FLC FC FRC FR 45 * 46 * LFE 47 * 48 * RL RLC RC RRC RR 49 * 50 * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M 51 * corresponds to CEA RL/RR; The SMPTE channel _assignment_ C/LFE is 52 * swapped to CEA LFE/FC. 53 */ 54 enum cea_speaker_placement { 55 FL = (1 << 0), /* Front Left */ 56 FC = (1 << 1), /* Front Center */ 57 FR = (1 << 2), /* Front Right */ 58 FLC = (1 << 3), /* Front Left Center */ 59 FRC = (1 << 4), /* Front Right Center */ 60 RL = (1 << 5), /* Rear Left */ 61 RC = (1 << 6), /* Rear Center */ 62 RR = (1 << 7), /* Rear Right */ 63 RLC = (1 << 8), /* Rear Left Center */ 64 RRC = (1 << 9), /* Rear Right Center */ 65 LFE = (1 << 10), /* Low Frequency Effect */ 66 }; 67 68 struct cea_channel_speaker_allocation { 69 int ca_index; 70 int speakers[8]; 71 72 /* derived values, just for convenience */ 73 int channels; 74 int spk_mask; 75 }; 76 77 struct channel_map_table { 78 unsigned char map; /* ALSA API channel map position */ 79 unsigned char cea_slot; /* CEA slot value */ 80 int spk_mask; /* speaker position bit mask */ 81 }; 82 83 struct pcm_stream_info { 84 struct snd_pcm_substream *substream; 85 int substream_refcount; 86 }; 87 88 /* 89 * struct snd_intelhad - intelhad driver structure 90 * 91 * @card: ptr to hold card details 92 * @connected: the monitor connection status 93 * @stream_info: stream information 94 * @eld: holds ELD info 95 * @curr_buf: pointer to hold current active ring buf 96 * @valid_buf_cnt: ring buffer count for stream 97 * @had_spinlock: driver lock 98 * @aes_bits: IEC958 status bits 99 * @buff_done: id of current buffer done intr 100 * @dev: platoform device handle 101 * @chmap: holds channel map info 102 */ 103 struct snd_intelhad { 104 struct snd_card *card; 105 bool connected; 106 struct pcm_stream_info stream_info; 107 unsigned char eld[HDMI_MAX_ELD_BYTES]; 108 bool dp_output; 109 unsigned int aes_bits; 110 spinlock_t had_spinlock; 111 struct device *dev; 112 struct snd_pcm_chmap *chmap; 113 int tmds_clock_speed; 114 int link_rate; 115 116 /* ring buffer (BD) position index */ 117 unsigned int bd_head; 118 /* PCM buffer position indices */ 119 unsigned int pcmbuf_head; /* being processed */ 120 unsigned int pcmbuf_filled; /* to be filled */ 121 122 unsigned int num_bds; /* number of BDs */ 123 unsigned int period_bytes; /* PCM period size in bytes */ 124 125 /* internal stuff */ 126 int irq; 127 void __iomem *mmio_start; 128 unsigned int had_config_offset; 129 union aud_cfg aud_config; /* AUD_CONFIG reg value cache */ 130 struct work_struct hdmi_audio_wq; 131 struct mutex mutex; /* for protecting chmap and eld */ 132 bool need_reset; 133 struct snd_jack *jack; 134 }; 135 136 #endif /* _INTEL_HDMI_AUDIO_ */ 137