| /* |
| * Copyright (C) 2016 Intel Corporation |
| * Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com> |
| * Ramesh Babu K V <ramesh.babu@intel.com> |
| * Vaibhav Agarwal <vaibhav.agarwal@intel.com> |
| * Jerome Anand <jerome.anand@intel.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the |
| * next paragraph) shall be included in all copies or substantial |
| * portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #ifndef _INTEL_HDMI_AUDIO_H_ |
| #define _INTEL_HDMI_AUDIO_H_ |
| |
| #include "intel_hdmi_lpe_audio.h" |
| |
| #define PCM_INDEX 0 |
| #define MAX_PB_STREAMS 1 |
| #define MAX_CAP_STREAMS 0 |
| #define BYTES_PER_WORD 0x4 |
| #define INTEL_HAD "HdmiLpeAudio" |
| |
| /* |
| * CEA speaker placement: |
| * |
| * FL FLC FC FRC FR |
| * |
| * LFE |
| * |
| * RL RLC RC RRC RR |
| * |
| * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M |
| * corresponds to CEA RL/RR; The SMPTE channel _assignment_ C/LFE is |
| * swapped to CEA LFE/FC. |
| */ |
| enum cea_speaker_placement { |
| FL = (1 << 0), /* Front Left */ |
| FC = (1 << 1), /* Front Center */ |
| FR = (1 << 2), /* Front Right */ |
| FLC = (1 << 3), /* Front Left Center */ |
| FRC = (1 << 4), /* Front Right Center */ |
| RL = (1 << 5), /* Rear Left */ |
| RC = (1 << 6), /* Rear Center */ |
| RR = (1 << 7), /* Rear Right */ |
| RLC = (1 << 8), /* Rear Left Center */ |
| RRC = (1 << 9), /* Rear Right Center */ |
| LFE = (1 << 10), /* Low Frequency Effect */ |
| }; |
| |
| struct cea_channel_speaker_allocation { |
| int ca_index; |
| int speakers[8]; |
| |
| /* derived values, just for convenience */ |
| int channels; |
| int spk_mask; |
| }; |
| |
| struct channel_map_table { |
| unsigned char map; /* ALSA API channel map position */ |
| unsigned char cea_slot; /* CEA slot value */ |
| int spk_mask; /* speaker position bit mask */ |
| }; |
| |
| struct pcm_stream_info { |
| struct snd_pcm_substream *substream; |
| int substream_refcount; |
| }; |
| |
| /* |
| * struct snd_intelhad - intelhad driver structure |
| * |
| * @card: ptr to hold card details |
| * @connected: the monitor connection status |
| * @stream_info: stream information |
| * @eld: holds ELD info |
| * @curr_buf: pointer to hold current active ring buf |
| * @valid_buf_cnt: ring buffer count for stream |
| * @had_spinlock: driver lock |
| * @aes_bits: IEC958 status bits |
| * @buff_done: id of current buffer done intr |
| * @dev: platoform device handle |
| * @chmap: holds channel map info |
| */ |
| struct snd_intelhad { |
| struct snd_card *card; |
| bool connected; |
| struct pcm_stream_info stream_info; |
| unsigned char eld[HDMI_MAX_ELD_BYTES]; |
| bool dp_output; |
| unsigned int aes_bits; |
| spinlock_t had_spinlock; |
| struct device *dev; |
| struct snd_pcm_chmap *chmap; |
| int tmds_clock_speed; |
| int link_rate; |
| |
| /* ring buffer (BD) position index */ |
| unsigned int bd_head; |
| /* PCM buffer position indices */ |
| unsigned int pcmbuf_head; /* being processed */ |
| unsigned int pcmbuf_filled; /* to be filled */ |
| |
| unsigned int num_bds; /* number of BDs */ |
| unsigned int period_bytes; /* PCM period size in bytes */ |
| |
| /* internal stuff */ |
| int irq; |
| void __iomem *mmio_start; |
| unsigned int had_config_offset; |
| union aud_cfg aud_config; /* AUD_CONFIG reg value cache */ |
| struct work_struct hdmi_audio_wq; |
| struct mutex mutex; /* for protecting chmap and eld */ |
| bool need_reset; |
| struct snd_jack *jack; |
| }; |
| |
| #endif /* _INTEL_HDMI_AUDIO_ */ |