/* * 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.
*/
/* * 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 { unsignedchar map; /* ALSA API channel map position */ unsignedchar 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: platform device handle * @chmap: holds channel map info
*/ struct snd_intelhad { struct snd_intelhad_card *card_ctx; bool connected; struct pcm_stream_info stream_info; unsignedchar eld[HDMI_MAX_ELD_BYTES]; bool dp_output; unsignedint aes_bits;
spinlock_t had_spinlock; struct device *dev; struct snd_pcm_chmap *chmap; int tmds_clock_speed; int link_rate; int port; /* fixed */ int pipe; /* can change dynamically */
/* ring buffer (BD) position index */ unsignedint bd_head; /* PCM buffer position indices */ unsignedint pcmbuf_head; /* being processed */ unsignedint pcmbuf_filled; /* to be filled */
unsignedint num_bds; /* number of BDs */ unsignedint period_bytes; /* PCM period size in bytes */
/* internal stuff */ union aud_cfg aud_config; /* AUD_CONFIG reg value cache */ struct work_struct hdmi_audio_wq; struct mutex mutex; /* for protecting chmap and eld */ struct snd_jack *jack;
};
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