cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

intel_hdmi_audio.h (4525B)

      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 MAX_PB_STREAMS		1
     36#define MAX_CAP_STREAMS		0
     37#define BYTES_PER_WORD		0x4
     38#define INTEL_HAD		"HdmiLpeAudio"
     39
     40/*
     41 *	CEA speaker placement:
     42 *
     43 *	FL  FLC   FC   FRC   FR
     44 *
     45 *						LFE
     46 *
     47 *	RL  RLC   RC   RRC   RR
     48 *
     49 *	The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M
     50 *	corresponds to CEA RL/RR; The SMPTE channel _assignment_ C/LFE is
     51 *	swapped to CEA LFE/FC.
     52 */
     53enum cea_speaker_placement {
     54	FL  = (1 <<  0),        /* Front Left           */
     55	FC  = (1 <<  1),        /* Front Center         */
     56	FR  = (1 <<  2),        /* Front Right          */
     57	FLC = (1 <<  3),        /* Front Left Center    */
     58	FRC = (1 <<  4),        /* Front Right Center   */
     59	RL  = (1 <<  5),        /* Rear Left            */
     60	RC  = (1 <<  6),        /* Rear Center          */
     61	RR  = (1 <<  7),        /* Rear Right           */
     62	RLC = (1 <<  8),        /* Rear Left Center     */
     63	RRC = (1 <<  9),        /* Rear Right Center    */
     64	LFE = (1 << 10),        /* Low Frequency Effect */
     65};
     66
     67struct cea_channel_speaker_allocation {
     68	int ca_index;
     69	int speakers[8];
     70
     71	/* derived values, just for convenience */
     72	int channels;
     73	int spk_mask;
     74};
     75
     76struct channel_map_table {
     77	unsigned char map;              /* ALSA API channel map position */
     78	unsigned char cea_slot;         /* CEA slot value */
     79	int spk_mask;                   /* speaker position bit mask */
     80};
     81
     82struct pcm_stream_info {
     83	struct snd_pcm_substream *substream;
     84	int substream_refcount;
     85};
     86
     87/*
     88 * struct snd_intelhad - intelhad driver structure
     89 *
     90 * @card: ptr to hold card details
     91 * @connected: the monitor connection status
     92 * @stream_info: stream information
     93 * @eld: holds ELD info
     94 * @curr_buf: pointer to hold current active ring buf
     95 * @valid_buf_cnt: ring buffer count for stream
     96 * @had_spinlock: driver lock
     97 * @aes_bits: IEC958 status bits
     98 * @buff_done: id of current buffer done intr
     99 * @dev: platform device handle
    100 * @chmap: holds channel map info
    101 */
    102struct snd_intelhad {
    103	struct snd_intelhad_card *card_ctx;
    104	bool		connected;
    105	struct		pcm_stream_info stream_info;
    106	unsigned char	eld[HDMI_MAX_ELD_BYTES];
    107	bool dp_output;
    108	unsigned int	aes_bits;
    109	spinlock_t had_spinlock;
    110	struct device *dev;
    111	struct snd_pcm_chmap *chmap;
    112	int tmds_clock_speed;
    113	int link_rate;
    114	int port; /* fixed */
    115	int pipe; /* can change dynamically */
    116
    117	/* ring buffer (BD) position index */
    118	unsigned int bd_head;
    119	/* PCM buffer position indices */
    120	unsigned int pcmbuf_head;	/* being processed */
    121	unsigned int pcmbuf_filled;	/* to be filled */
    122
    123	unsigned int num_bds;		/* number of BDs */
    124	unsigned int period_bytes;	/* PCM period size in bytes */
    125
    126	/* internal stuff */
    127	union aud_cfg aud_config;	/* AUD_CONFIG reg value cache */
    128	struct work_struct hdmi_audio_wq;
    129	struct mutex mutex; /* for protecting chmap and eld */
    130	struct snd_jack *jack;
    131};
    132
    133struct snd_intelhad_card {
    134	struct snd_card	*card;
    135	struct device *dev;
    136
    137	/* internal stuff */
    138	int irq;
    139	void __iomem *mmio_start;
    140	int num_pipes;
    141	int num_ports;
    142	struct snd_intelhad pcm_ctx[3]; /* one for each port */
    143};
    144
    145#endif /* _INTEL_HDMI_AUDIO_ */