147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
/*
|
|
* 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 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_intelhad_card *card_ctx;
|
|
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;
|
|
int port; /* fixed */
|
|
int pipe; /* can change dynamically */
|
|
|
|
/* 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 */
|
|
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;
|
|
};
|
|
|
|
struct snd_intelhad_card {
|
|
struct snd_card *card;
|
|
struct device *dev;
|
|
|
|
/* internal stuff */
|
|
int irq;
|
|
void __iomem *mmio_start;
|
|
int num_pipes;
|
|
int num_ports;
|
|
struct snd_intelhad pcm_ctx[3]; /* one for each port */
|
|
};
|
|
|
|
#endif /* _INTEL_HDMI_AUDIO_ */
|