ASoC: mid-x86 - add support for compressed streams
Signed-off-by: Namarta Kohli <namartax.kohli@intel.com> Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Vinod Koul
Mark Brown
Родитель
1245b7005d
Коммит
c514a9119a
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@ -318,6 +318,15 @@ static struct snd_soc_dai_link mfld_msic_dailink[] = {
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.platform_name = "sst-platform",
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.init = NULL,
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},
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{
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.name = "Medfield Compress",
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.stream_name = "Speaker",
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.cpu_dai_name = "Compress-cpu-dai",
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.codec_dai_name = "SN95031 Speaker",
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.codec_name = "sn95031",
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.platform_name = "sst-platform",
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.init = NULL,
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},
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};
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/* SoC card */
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@ -0,0 +1,134 @@
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#ifndef __SST_DSP_H__
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#define __SST_DSP_H__
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/*
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* sst_dsp.h - Intel SST Driver for audio engine
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*
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* Copyright (C) 2008-12 Intel Corporation
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* Authors: Vinod Koul <vinod.koul@linux.intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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enum sst_codec_types {
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/* AUDIO/MUSIC CODEC Type Definitions */
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SST_CODEC_TYPE_UNKNOWN = 0,
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SST_CODEC_TYPE_PCM, /* Pass through Audio codec */
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SST_CODEC_TYPE_MP3,
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SST_CODEC_TYPE_MP24,
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SST_CODEC_TYPE_AAC,
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SST_CODEC_TYPE_AACP,
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SST_CODEC_TYPE_eAACP,
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};
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enum stream_type {
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SST_STREAM_TYPE_NONE = 0,
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SST_STREAM_TYPE_MUSIC = 1,
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};
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struct snd_pcm_params {
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u16 codec; /* codec type */
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u8 num_chan; /* 1=Mono, 2=Stereo */
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u8 pcm_wd_sz; /* 16/24 - bit*/
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u32 reserved; /* Bitrate in bits per second */
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u32 sfreq; /* Sampling rate in Hz */
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u8 use_offload_path;
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u8 reserved2;
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u16 reserved3;
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u8 channel_map[8];
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} __packed;
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/* MP3 Music Parameters Message */
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struct snd_mp3_params {
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u16 codec;
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u8 num_chan; /* 1=Mono, 2=Stereo */
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u8 pcm_wd_sz; /* 16/24 - bit*/
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u8 crc_check; /* crc_check - disable (0) or enable (1) */
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u8 reserved1; /* unused*/
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u16 reserved2; /* Unused */
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} __packed;
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#define AAC_BIT_STREAM_ADTS 0
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#define AAC_BIT_STREAM_ADIF 1
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#define AAC_BIT_STREAM_RAW 2
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/* AAC Music Parameters Message */
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struct snd_aac_params {
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u16 codec;
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u8 num_chan; /* 1=Mono, 2=Stereo*/
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u8 pcm_wd_sz; /* 16/24 - bit*/
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u8 bdownsample; /*SBR downsampling 0 - disable 1 -enabled AAC+ only */
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u8 bs_format; /* input bit stream format adts=0, adif=1, raw=2 */
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u16 reser2;
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u32 externalsr; /*sampling rate of basic AAC raw bit stream*/
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u8 sbr_signalling;/*disable/enable/set automode the SBR tool.AAC+*/
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u8 reser1;
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u16 reser3;
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} __packed;
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/* WMA Music Parameters Message */
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struct snd_wma_params {
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u16 codec;
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u8 num_chan; /* 1=Mono, 2=Stereo */
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u8 pcm_wd_sz; /* 16/24 - bit*/
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u32 brate; /* Use the hard coded value. */
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u32 sfreq; /* Sampling freq eg. 8000, 441000, 48000 */
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u32 channel_mask; /* Channel Mask */
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u16 format_tag; /* Format Tag */
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u16 block_align; /* packet size */
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u16 wma_encode_opt;/* Encoder option */
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u8 op_align; /* op align 0- 16 bit, 1- MSB, 2 LSB */
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u8 reserved; /* reserved */
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} __packed;
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/* Codec params struture */
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union snd_sst_codec_params {
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struct snd_pcm_params pcm_params;
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struct snd_mp3_params mp3_params;
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struct snd_aac_params aac_params;
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struct snd_wma_params wma_params;
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} __packed;
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/* Address and size info of a frame buffer */
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struct sst_address_info {
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u32 addr; /* Address at IA */
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u32 size; /* Size of the buffer */
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};
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struct snd_sst_alloc_params_ext {
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struct sst_address_info ring_buf_info[8];
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u8 sg_count;
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u8 reserved;
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u16 reserved2;
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u32 frag_size; /*Number of samples after which period elapsed
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message is sent valid only if path = 0*/
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} __packed;
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struct snd_sst_stream_params {
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union snd_sst_codec_params uc;
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} __packed;
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struct snd_sst_params {
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u32 stream_id;
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u8 codec;
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u8 ops;
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u8 stream_type;
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u8 device_type;
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struct snd_sst_stream_params sparams;
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struct snd_sst_alloc_params_ext aparams;
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};
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#endif /* __SST_DSP_H__ */
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@ -1,7 +1,7 @@
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/*
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* sst_platform.c - Intel MID Platform driver
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*
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* Copyright (C) 2010 Intel Corp
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* Copyright (C) 2010-2012 Intel Corp
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* Author: Vinod Koul <vinod.koul@intel.com>
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* Author: Harsha Priya <priya.harsha@intel.com>
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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@ -32,6 +32,7 @@
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/compress_driver.h>
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#include "sst_platform.h"
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static struct sst_device *sst;
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@ -152,6 +153,16 @@ static struct snd_soc_dai_driver sst_platform_dai[] = {
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.formats = SNDRV_PCM_FMTBIT_S24_LE,
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},
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},
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{
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.name = "Compress-cpu-dai",
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.compress_dai = 1,
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.playback = {
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.channels_min = SST_STEREO,
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.channels_max = SST_STEREO,
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.rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,
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},
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},
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};
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/* helper functions */
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@ -463,8 +474,199 @@ static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
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}
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return retval;
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}
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/* compress stream operations */
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static void sst_compr_fragment_elapsed(void *arg)
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{
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struct snd_compr_stream *cstream = (struct snd_compr_stream *)arg;
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pr_debug("fragment elapsed by driver\n");
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if (cstream)
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snd_compr_fragment_elapsed(cstream);
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}
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static int sst_platform_compr_open(struct snd_compr_stream *cstream)
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{
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int ret_val = 0;
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struct snd_compr_runtime *runtime = cstream->runtime;
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struct sst_runtime_stream *stream;
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stream = kzalloc(sizeof(*stream), GFP_KERNEL);
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if (!stream)
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return -ENOMEM;
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spin_lock_init(&stream->status_lock);
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/* get the sst ops */
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if (!sst || !try_module_get(sst->dev->driver->owner)) {
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pr_err("no device available to run\n");
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ret_val = -ENODEV;
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goto out_ops;
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}
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stream->compr_ops = sst->compr_ops;
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stream->id = 0;
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sst_set_stream_status(stream, SST_PLATFORM_INIT);
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runtime->private_data = stream;
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return 0;
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out_ops:
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kfree(stream);
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return ret_val;
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}
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static int sst_platform_compr_free(struct snd_compr_stream *cstream)
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{
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struct sst_runtime_stream *stream;
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int ret_val = 0, str_id;
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stream = cstream->runtime->private_data;
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/*need to check*/
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str_id = stream->id;
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if (str_id)
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ret_val = stream->compr_ops->close(str_id);
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module_put(sst->dev->driver->owner);
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kfree(stream);
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pr_debug("%s: %d\n", __func__, ret_val);
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return 0;
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}
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static int sst_platform_compr_set_params(struct snd_compr_stream *cstream,
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struct snd_compr_params *params)
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{
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struct sst_runtime_stream *stream;
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int retval;
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struct snd_sst_params str_params;
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struct sst_compress_cb cb;
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stream = cstream->runtime->private_data;
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/* construct fw structure for this*/
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memset(&str_params, 0, sizeof(str_params));
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str_params.ops = STREAM_OPS_PLAYBACK;
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str_params.stream_type = SST_STREAM_TYPE_MUSIC;
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str_params.device_type = SND_SST_DEVICE_COMPRESS;
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switch (params->codec.id) {
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case SND_AUDIOCODEC_MP3: {
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str_params.codec = SST_CODEC_TYPE_MP3;
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str_params.sparams.uc.mp3_params.codec = SST_CODEC_TYPE_MP3;
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str_params.sparams.uc.mp3_params.num_chan = params->codec.ch_in;
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str_params.sparams.uc.mp3_params.pcm_wd_sz = 16;
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break;
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}
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case SND_AUDIOCODEC_AAC: {
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str_params.codec = SST_CODEC_TYPE_AAC;
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str_params.sparams.uc.aac_params.codec = SST_CODEC_TYPE_AAC;
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str_params.sparams.uc.aac_params.num_chan = params->codec.ch_in;
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str_params.sparams.uc.aac_params.pcm_wd_sz = 16;
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if (params->codec.format == SND_AUDIOSTREAMFORMAT_MP4ADTS)
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str_params.sparams.uc.aac_params.bs_format =
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AAC_BIT_STREAM_ADTS;
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else if (params->codec.format == SND_AUDIOSTREAMFORMAT_RAW)
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str_params.sparams.uc.aac_params.bs_format =
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AAC_BIT_STREAM_RAW;
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else {
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pr_err("Undefined format%d\n", params->codec.format);
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return -EINVAL;
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}
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str_params.sparams.uc.aac_params.externalsr =
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params->codec.sample_rate;
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break;
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}
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default:
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pr_err("codec not supported, id =%d\n", params->codec.id);
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return -EINVAL;
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}
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str_params.aparams.ring_buf_info[0].addr =
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virt_to_phys(cstream->runtime->buffer);
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str_params.aparams.ring_buf_info[0].size =
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cstream->runtime->buffer_size;
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str_params.aparams.sg_count = 1;
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str_params.aparams.frag_size = cstream->runtime->fragment_size;
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cb.param = cstream;
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cb.compr_cb = sst_compr_fragment_elapsed;
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retval = stream->compr_ops->open(&str_params, &cb);
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if (retval < 0) {
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pr_err("stream allocation failed %d\n", retval);
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return retval;
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}
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stream->id = retval;
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return 0;
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}
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static int sst_platform_compr_trigger(struct snd_compr_stream *cstream, int cmd)
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{
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struct sst_runtime_stream *stream =
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cstream->runtime->private_data;
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return stream->compr_ops->control(cmd, stream->id);
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}
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static int sst_platform_compr_pointer(struct snd_compr_stream *cstream,
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struct snd_compr_tstamp *tstamp)
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{
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struct sst_runtime_stream *stream;
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stream = cstream->runtime->private_data;
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stream->compr_ops->tstamp(stream->id, tstamp);
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tstamp->byte_offset = tstamp->copied_total %
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(u32)cstream->runtime->buffer_size;
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pr_debug("calc bytes offset/copied bytes as %d\n", tstamp->byte_offset);
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return 0;
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}
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static int sst_platform_compr_ack(struct snd_compr_stream *cstream,
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size_t bytes)
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{
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struct sst_runtime_stream *stream;
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stream = cstream->runtime->private_data;
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stream->compr_ops->ack(stream->id, (unsigned long)bytes);
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stream->bytes_written += bytes;
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return 0;
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}
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static int sst_platform_compr_get_caps(struct snd_compr_stream *cstream,
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struct snd_compr_caps *caps)
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{
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struct sst_runtime_stream *stream =
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cstream->runtime->private_data;
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return stream->compr_ops->get_caps(caps);
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}
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static int sst_platform_compr_get_codec_caps(struct snd_compr_stream *cstream,
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struct snd_compr_codec_caps *codec)
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{
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struct sst_runtime_stream *stream =
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cstream->runtime->private_data;
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return stream->compr_ops->get_codec_caps(codec);
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}
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static struct snd_compr_ops sst_platform_compr_ops = {
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.open = sst_platform_compr_open,
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.free = sst_platform_compr_free,
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.set_params = sst_platform_compr_set_params,
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.trigger = sst_platform_compr_trigger,
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.pointer = sst_platform_compr_pointer,
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.ack = sst_platform_compr_ack,
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.get_caps = sst_platform_compr_get_caps,
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.get_codec_caps = sst_platform_compr_get_codec_caps,
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};
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static struct snd_soc_platform_driver sst_soc_platform_drv = {
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.ops = &sst_platform_ops,
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.compr_ops = &sst_platform_compr_ops,
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.pcm_new = sst_pcm_new,
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.pcm_free = sst_pcm_free,
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};
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@ -27,6 +27,8 @@
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#ifndef __SST_PLATFORMDRV_H__
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#define __SST_PLATFORMDRV_H__
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#include "sst_dsp.h"
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#define SST_MONO 1
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#define SST_STEREO 2
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#define SST_MAX_CAP 5
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@ -42,7 +44,6 @@
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#define SST_MIN_PERIODS 2
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#define SST_MAX_PERIODS (1024*2)
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#define SST_FIFO_SIZE 0
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#define SST_CODEC_TYPE_PCM 1
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struct pcm_stream_info {
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int str_id;
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@ -83,6 +84,7 @@ enum sst_audio_device_type {
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SND_SST_DEVICE_VIBRA,
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SND_SST_DEVICE_HAPTIC,
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SND_SST_DEVICE_CAPTURE,
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SND_SST_DEVICE_COMPRESS,
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};
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/* PCM Parameters */
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@ -107,6 +109,24 @@ struct sst_stream_params {
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struct sst_pcm_params sparams;
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};
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struct sst_compress_cb {
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void *param;
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void (*compr_cb)(void *param);
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};
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struct compress_sst_ops {
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const char *name;
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int (*open) (struct snd_sst_params *str_params,
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struct sst_compress_cb *cb);
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int (*control) (unsigned int cmd, unsigned int str_id);
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int (*tstamp) (unsigned int str_id, struct snd_compr_tstamp *tstamp);
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int (*ack) (unsigned int str_id, unsigned long bytes);
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int (*close) (unsigned int str_id);
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int (*get_caps) (struct snd_compr_caps *caps);
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int (*get_codec_caps) (struct snd_compr_codec_caps *codec);
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};
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struct sst_ops {
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int (*open) (struct sst_stream_params *str_param);
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int (*device_control) (int cmd, void *arg);
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@ -115,8 +135,11 @@ struct sst_ops {
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struct sst_runtime_stream {
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int stream_status;
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unsigned int id;
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size_t bytes_written;
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struct pcm_stream_info stream_info;
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struct sst_ops *ops;
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struct compress_sst_ops *compr_ops;
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spinlock_t status_lock;
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};
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@ -124,6 +147,7 @@ struct sst_device {
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char *name;
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struct device *dev;
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struct sst_ops *ops;
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struct compress_sst_ops *compr_ops;
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};
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int sst_register_dsp(struct sst_device *sst);
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