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Diffstat (limited to 'sound/x86/intel_hdmi_audio.h')
| -rw-r--r-- | sound/x86/intel_hdmi_audio.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/sound/x86/intel_hdmi_audio.h b/sound/x86/intel_hdmi_audio.h new file mode 100644 index 000000000000..2d3e389f76b3 --- /dev/null +++ b/sound/x86/intel_hdmi_audio.h @@ -0,0 +1,136 @@ +/* + * 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_ */ |